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WO2014196268A1 - Joining device for resin member, joining structure, and joining method - Google Patents

Joining device for resin member, joining structure, and joining method Download PDF

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Publication number
WO2014196268A1
WO2014196268A1 PCT/JP2014/060454 JP2014060454W WO2014196268A1 WO 2014196268 A1 WO2014196268 A1 WO 2014196268A1 JP 2014060454 W JP2014060454 W JP 2014060454W WO 2014196268 A1 WO2014196268 A1 WO 2014196268A1
Authority
WO
WIPO (PCT)
Prior art keywords
self
resin
die
piercing rivet
joining
Prior art date
Application number
PCT/JP2014/060454
Other languages
French (fr)
Japanese (ja)
Inventor
近藤　吉輝
鈴木　晴彦
松平　義道
英治 中神
博司 今泉
Original Assignee
ニューフレイ リミテッド ライアビリティ カンパニー
ポップリベット・ファスナー株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ニューフレイ リミテッド ライアビリティ カンパニー, ポップリベット・ファスナー株式会社 filed Critical ニューフレイ リミテッド ライアビリティ カンパニー
Priority to CN201480026429.6A priority Critical patent/CN105188986A/en
Publication of WO2014196268A1 publication Critical patent/WO2014196268A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/025—Setting self-piercing rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/02—Riveting procedures
    • B21J15/08—Riveting by applying heat, e.g. to the end parts of the rivets to enable heads to be formed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
    • B21J15/147—Composite articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J15/00—Riveting
    • B21J15/10—Riveting machines
    • B21J15/36—Rivet sets, i.e. tools for forming heads; Mandrels for expanding parts of hollow rivets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/44—Joining a heated non plastics element to a plastics element
    • B29C65/46—Joining a heated non plastics element to a plastics element heated by induction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/818—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps
    • B29C66/8181—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects
    • B29C66/81811—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the cooling constructional aspects, or by the thermal or electrical insulating or conducting constructional aspects of the welding jaws or of the clamps ; comprising means for compensating for the thermal expansion of the welding jaws or of the clamps characterised by the cooling constructional aspects of the welding jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3604—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the type of elements heated by induction which remain in the joint
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/34—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement"
    • B29C65/36—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction
    • B29C65/3672—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint
    • B29C65/3676—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated elements which remain in the joint, e.g. "verlorenes Schweisselement" heated by induction characterised by the composition of the elements heated by induction which remain in the joint being metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/721—Fibre-reinforced materials
    • B29C66/7212—Fibre-reinforced materials characterised by the composition of the fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/727—Fastening elements
    • B29L2031/7288—Rivets

Definitions

  • the present invention relates to a coupling device, a coupling structure, and a coupling method for coupling a plurality of resin members.
  • the present invention relates to a bonding apparatus, a bonding structure, and a bonding method in which a self-piercing rivet is driven from above the uppermost resin member and the resin members are bonded together.
  • the bonding method using a self-piercing rivet is a self-piercing type in which two members (metal plates) are placed on a die having a cavity formed on the upper surface, and have a large-diameter head and legs extending from the head. Position the rivet over the upper member.
  • the self-piercing rivet is driven into the member by punching, the leg portion of the self-piercing rivet passes through the upper member, and the leg portion extends into the lower member.
  • the self-piercing rivet does not require a hole for passing the self-piercing rivet into the member in advance, and the members can be joined by driving the self-piercing rivet. Therefore, a plurality of metal members can be efficiently bonded with high strength.
  • Patent Document 1 discloses a method in which a self-drilling rivet is driven into a resin part that is a member to be joined, and a tip part is expanded to join two resin parts.
  • a self-drilling rivet having a shaft hole is driven into two resin parts not having a pilot hole, and a chip generated by driving the self-drilling rivet is pressed into the self-drilling rivet shaft hole. It is pushed in so that it remains in the shaft hole and effectively acts on the caulking strength.
  • Patent Document 1 does not heat resin parts when joining resin parts. Therefore, when the self-piercing rivet is driven into the resin part, there is a possibility that a crack may occur or a crack may occur.
  • Patent Document 2 discloses a connection method in which two or more resin members are overlapped using a self-piercing (self-piercing type) rivet.
  • a resin member having a thermoplastic resin as a matrix resin is disposed at least in the lowermost layer, and at least the lowermost resin member is heat-treated and a self-piercing rivet is driven and connected in a molten state.
  • a heater is built in a rivet die (die) and heated by the heater to melt the matrix resin.
  • the self-piercing rivet is driven in a state where the matrix resin is melted, the problem that the lowermost resin material breaks when the self-piercing rivet is driven is solved.
  • Patent Document 3 two or more resin members are stacked with a conductive metal plate sandwiched therebetween, and the metal plate is energized to melt the interface of the resin member in contact with the metal plate to weld the metal plate.
  • a connection method is disclosed in which self-piercing rivets are driven into the mating locations to reach the inside of the lowermost resin member.
  • Patent Document 3 connects resin members by welding, rivet connection, and a burr formed when a self-piercing rivet penetrates a metal plate into a resin member under the metal plate.
  • Patent Document 3 since it is necessary to interpose a metal plate between the resin members, the thickness of the connection portion is increased. Moreover, since it heats with the Joule heat which arises in a metal plate when it supplies with electricity to a metal plate, it takes time until a resin member fuse
  • Patent document 1 does not consider the crack which arises in a resin member.
  • the resin member is heated and partially melted, the resin member is hardly cracked.
  • the resin member is heated by Joule heat at the time of joining, there is a problem that heating takes time and a wide range is heated, so that heating energy is wasted.
  • An object of the present invention is to provide a resin member joining apparatus, a joining structure, and a joining method in which, when a plurality of resin members are joined by a self-piercing rivet, the resin member is hardly damaged.
  • Another object of the present invention is to provide a bonding apparatus, a bonding structure, and a bonding method capable of stably bonding resin members with high strength.
  • the present inventors heated a self-piercing rivet by high-frequency electromagnetic induction heating, and when driving the self-piercing rivet, heated a part of the resin member by the heated self-piercing rivet.
  • the present invention invented a joining apparatus, a joining structure, and a method for melting and joining by self-piercing rivets and joining the resin members by fusing them together. Since the self-piercing rivet is driven in a state where the resin member is melted, the resin member is not cracked and can be joined with high strength.
  • One aspect of the present invention is a joining device for driving and joining self-piercing rivets to a plurality of resin members arranged on a die, The resin member, and a die that receives the legs of the self-piercing rivet disposed on the resin member;
  • a die support member made of an insulator to support the die;
  • a cylindrical pre-clamp made of an insulator, A high-frequency electromagnetic induction coil wound around the pre-clamp;
  • a punch made of an insulator is provided,
  • a bonding apparatus characterized in that the self-piercing rivet is heated by high frequency electromagnetic induction, the self-piercing rivet is driven in a state where a part of the plurality of resin members is melted, and the plurality of resin members are joined. is there.
  • the die support member, the pre-clamp, and the punch are made of an insulator and are not heated by high frequency electromagnetic induction.
  • the self-piercing rivet is heated by high frequency electromagnetic induction, and the resin member is heated by the self-piercing rivet. Since the self-piercing rivet is driven in a state where a part of the resin member is melted, the resin member is hardly damaged. After cooling, the melted portion of the resin member is fused, and the resin member is bonded by the self-piercing rivet, so that the resin member can be bonded stably with high strength.
  • the self-piercing rivet is also heated from the bottom by high-frequency electromagnetic induction heating. Can be heated.
  • the magnetic core member is preferably made of ferrite. If the magnetic core member is made of ferrite, the magnetic field can be concentrated by the die.
  • the die is preferably made of an insulator. If the die is made of an insulator, it is not heated by high frequency electromagnetic induction, and the resin member can be prevented from welding to the die.
  • the die is preferably made of ferrite. If the die is made of ferrite, the magnetic field can be concentrated by the die.
  • a cooling water passage in the die support member.
  • the die can be cooled, the resin member can be prevented from being welded to the die, and overheating of the high frequency electromagnetic induction coil can be prevented.
  • Another aspect of the present invention is a joining structure in which a self-piercing rivet having a large-diameter head and hollow legs hanging from the head is driven into a plurality of resin members disposed on a die.
  • a plurality of the resin members are softened or melted and fused by a self-piercing rivet heated by high frequency electromagnetic induction, and the legs of the self-piercing rivet penetrate the upper resin member,
  • the joint structure is characterized in that the diameter of the resin member is increased in the lower resin member and the resin member is joined.
  • Still another aspect of the present invention is a bonding method for driving a self-piercing rivet into a plurality of resin members arranged on a die, A plurality of resin members are arranged on the die, The plurality of resin members are fixed by pressing from above with a pre-clamp, Placing the self-piercing rivets on the plurality of resin members in the pre-clamp; A high-frequency current is passed through the high-frequency electromagnetic induction coil, and the self-piercing rivet is preheated by high-frequency electromagnetic induction heating, While flowing a high-frequency current through the high-frequency electromagnetic induction coil, the self-piercing rivet is driven into the plurality of resin members by the punch, Melting a portion of the plurality of resin members adjacent to the self-piercing rivet; Stopping the flow of a high-frequency current to the high-frequency electromagnetic induction coil, and fusing the melted portions of the plurality of resin members,
  • the joining method is characterized in that the plurality of resin members are joined by driving the self-
  • the present invention when a plurality of resin members are joined by a self-piercing rivet, it is possible to obtain a resin member joining device, a joining structure, and a joining method in which a resin member is hardly damaged. Moreover, the joining apparatus, joining structure, and joining method which can join the resin member stably with high intensity
  • FIG. 4 is a cross-sectional view showing an intermediate stage in which a self-piercing rivet is driven into a resin member from the state of FIG. 3.
  • FIG. 5 is a cross-sectional view showing a stage where a self-piercing rivet is further driven into the resin member from the state of FIG. It is sectional drawing which shows the state which joined the resin members using the self-piercing-type rivet of the 1st Embodiment of this invention.
  • FIG. 1 is a cross-sectional view of a bonding apparatus 1 according to a first embodiment of the present invention.
  • the joining apparatus 1 superposes resin members 41 and 42, heats the self-piercing rivet 10 by high-frequency electromagnetic induction heating, drives the self-piercing rivet 10 while melting the resin members 41 and 42, and self-piercing rivets Bonding is performed by driving 10 and welding the resin members 41 and 42 together.
  • the joining apparatus 1 includes a die 20 that receives a self-piercing rivet 10.
  • the die 20 has a cavity 21 for receiving the legs 12 of the self-piercing rivet 10 on the upper surface.
  • the cavity 21 has a conical conical surface 22 whose height decreases from the axial center to the outer periphery, and a side surface 23 surrounding the conical surface 22.
  • the cavity 21 of the die 20 is molded by receiving the resin members 41 and 42, and is deformed so that the tip of the leg portion 12 of the self-piercing rivet 10 is expanded.
  • the die is made of metal because the self-piercing rivet is driven with a large load.
  • the die can be made of an insulating material to suppress heat generation due to high frequency electromagnetic induction.
  • the material of the die 20 is made of the same insulator as the die support member 25 such as ceramic.
  • the die 20 can be formed of the same material as the magnetic core member 32 described later, and the magnetic field can be concentrated to increase the magnetic force.
  • a substantially cylindrical die support member 25 is connected to the lower side of the die 20.
  • the die support member 25 supports the die 20 from below.
  • the die support member 25 is formed of an insulator that does not generate heat due to high frequency electromagnetic induction such as ceramic. Since the die 20 and the die support member 25 are formed of the same insulator, they can be integrally formed without being separated.
  • a cooling water passage 27 is formed inside the cylindrical die support member 25 to allow the cooling water to pass therethrough.
  • the cooling water passage 27 has a circular cross section and extends in the longitudinal direction inside the die support member 25.
  • the cooling water passage 27 is provided with one passage entering the lower side of the die 20 and one passage exiting from the lower side of the die 20. Alternatively, a plurality of each can be provided.
  • the cooling water passage 27 extends on the lower side of the die 20 over a wide range below the bottom surface 22 of the die 20.
  • the cooling water cools the die 20, prevents the heated resin member 42 from welding to the die 20, and cools the high-frequency electromagnetic induction coil 26.
  • the arrangement of the cooling water passage 27 can be extended to the lower side of the die 20 in another arrangement such as a spiral shape or a circular shape inside the die support member 25.
  • the cooling water passage 27 may be provided separately as a pipe surrounding the outside of the die support member 25, instead of being provided inside the die support member 25.
  • the die support member 25 can be provided as two members on the outside and the inside, and can be provided as a pipe between the outside and the inside members.
  • the pipe is preferably formed of an insulator.
  • the cooling water passage 27 is optional and may not be provided.
  • the inside of the cooling water passage 27 is an inner wall of the die support member 25.
  • a high frequency electromagnetic induction coil 26 is arranged in the space inside the inner wall. When a current is passed through the high frequency electromagnetic induction coil 26, a magnetic field is induced.
  • resin members 41 and 42 for bonding are disposed so as to overlap each other.
  • the resin members 41 and 42 are made of resin. At least one of the resin members 41 and 42 is a thermoplastic resin.
  • the lower resin member 42 is preferably a thermoplastic resin. When the self-piercing rivet 10 is driven, the lower resin member 42 is easily cracked. Therefore, if the lower resin member 42 is a thermoplastic resin, it is difficult to melt and crack.
  • thermoplastic resin the one plastic resin can be melted and fused with the other resin member.
  • thermoplastic resin polypropylene resin, polyethylene resin, ABS resin, polycarbonate resin, polyamide resin, or a combination of these resins can be used.
  • the thermoplastic resin can be a fiber reinforced resin mixed with glass fiber or carbon fiber.
  • the cylindrical pre-clamp 33 comes into contact with the upper surface of the resin member 41.
  • the pre-clamp 33 is made of an insulator such as ceramic.
  • the pre-clamp 33 holds the resin members 41 and 42 between the pre-clamp 33 and the die 20 while pressing the resin member 41 from the upper surface while driving the self-piercing rivet 10.
  • the self-piercing rivet 10 is disposed on the upper surface of the resin member 41.
  • the self-piercing rivet 10 is made of a conductor such as iron, aluminum, and stainless steel, and generates heat due to an induced current.
  • the self-piercing rivet 10 includes a disk-shaped head 11 and a cylindrical leg 12 that extends downward from the head 11 with an outer diameter smaller than that of the head 11.
  • the distal end portion of the leg portion 12 of the self-piercing rivet 10 contacts the upper surface of the resin member 41.
  • the distal end portion of the leg portion 12 is thin, and when the resin members 41 and 42 are driven, holes are easily formed in the resin members 41 and 42.
  • the self-piercing rivet 10 is heated by high-frequency electromagnetic induction heating when driven into the resin members 41 and 42.
  • the resin members 41 and 42 are heated and softened or melted by the heat of the self-piercing rivet 10, and are welded after the temperature is lowered.
  • a cylindrical magnetic core member 32 abuts on the upper surface of the head 11 of the self-piercing rivet 10.
  • the outer diameter of the lower surface of the magnetic core member 32 is substantially equal to the outer diameter of the head 11 of the self-piercing rivet 10, and the entire head 11 can be pushed.
  • the magnetic core member 32 is made of a magnetic insulator material such as ferrite and does not generate heat in a high frequency magnetic field.
  • the magnetic core member 32 functions to concentrate the magnetic field and increase the magnetic force.
  • the magnetic core member 32 may not be optional. When there is no magnetic core member 32, the punch 31 abuts on the upper surface of the self-piercing rivet 10.
  • a cylindrical punch 31 is connected on the magnetic core member 32.
  • the material of the punch 31 is an insulator such as ceramic.
  • the punch 31 is integrated with the magnetic core member 32 and drives the self-piercing rivet 10 heated by high frequency electromagnetic induction into the resin members 41 and 42.
  • a high frequency electromagnetic induction coil 36 is arranged so as to surround the cylindrical pre-clamp 33.
  • the magnetic field generated by the high frequency electromagnetic induction coil 36 is concentrated by the magnetic core member 32, and the self-piercing rivet 10 is heated by high frequency electromagnetic induction by the concentrated magnetic field.
  • a cooling water passage is not provided on the punch side above the resin members 41 and 42, but a cooling water passage is also provided around the punch 31, the magnetic core member 32, and the high-frequency electromagnetic induction coil 36. You can also
  • FIG. 2 is a block diagram of a high-frequency electromagnetic induction heating device used in the joining device 1 according to the first embodiment of the present invention.
  • the high-frequency power supply 55 temporarily converts an alternating current such as three-phase 200 V into direct current, and generates high-frequency energy of several hundred Hz to several MHz using elements such as an electron tube, thyristor, MOSFET, and IGBT.
  • the matching unit 56 matches the high-frequency energy generated by the high-frequency power source according to the voltage and current required for the heating unit 57 that is a load.
  • the frequency, current, and time of the high-frequency current are set to appropriate values by the resin member to be joined and the self-piercing rivet that is a conductor.
  • the high frequency current output from the matching unit 56 is passed through the high frequency electromagnetic induction coil of the heating unit 57, and the self-piercing rivet 10 is heated by high frequency electromagnetic induction heating.
  • High frequency electromagnetic induction heating is known and will not be described in further detail.
  • the cooling water circulation unit 58 allows the cooling water to flow through the high frequency power supply 55, the matching unit 56, and the heating coil 57.
  • FIG. 3 is an enlarged cross-sectional view of a joining portion of the joining apparatus 1 of FIG.
  • the die 20 has a cavity 21 on the upper surface.
  • the conical surface 22 of the cavity 21 is substantially conical and the side surface 23 is substantially cylindrical.
  • Resin members 41 and 42 are placed on the upper surface of the die 20, and the periphery of the part to be joined is pressed by the pre-clamp 33.
  • the self-piercing rivet 10 is disposed on the upper surface of the resin member 41.
  • the self-piercing rivet 10 has a large-diameter head 11 and hollow cylindrical legs 12 depending from the head 11.
  • FIG. 4 is a cross-sectional view of an intermediate stage in which the resin members 41 and 42 are joined by the self-piercing rivet 10.
  • the leg portion 12 penetrates the punch-side resin member 41 and pierces the receiving-side resin member 42.
  • the resin member 42 protrudes downward by the leg portion 12, and the protruding portion of the resin member 42 contacts the bottom surface 22 of the cavity 21.
  • the legs 12 of the self-piercing rivet 10 receive pressure from the inside and are guided radially outward by the conical bottom surface 22 of the cavity 21 and begin to deform so as to expand radially outward. Since the self-piercing rivet 10 is heated, when the self-piercing rivet 10 is driven, portions of the resin members 41 and 42 that are in contact with the self-piercing rivet 10 are also heated, and some of them are softened and melted.
  • FIG. 5 is a cross-sectional view after the joining operation proceeds further from the stage of FIG. 4 and the resin members 41 and 42 are joined by the self-piercing rivet 10.
  • the leg portion 12 of the self-piercing rivet 10 is deformed so as to expand the diameter outward in the radial direction while pushing the resin member 42 outward in the radial direction. Since some of the resin members 41 and 42 are softened and melted, the legs 12 of the self-piercing rivet 10 easily enter the resin members 41 and 42, and the resin members 41 and 42 are not easily cracked. .
  • FIG. 6 is a cross-sectional view showing a state in which the resin members 41 and 42 joined as shown in FIG. 5 are removed from the joining apparatus 1.
  • the vicinity of the interface between the resin members 41 and 42 close to the legs 12 of the self-piercing rivet 10 is melted, and then the temperature is lowered and solidified, and the resin members 41 and 42 are fused to form a fused portion 43. ing.
  • the leg portion 12 of the self-piercing rivet 10 is driven, a part of the resin members 41 and 42 is softened and melted, so that the resin members 41 and 42 are not cracked.
  • the distal end portion of the leg portion 12 of the self-piercing rivet 10 is expanded and opened. Since the resin member 42 at the joined portion is extruded into the cavity 21 of the die 20, the lower surface of the joined portion of the resin member 42 has a convex shape on the lower side and the center portion is recessed. Since the distal end portion of the leg portion 12 of the self-piercing rivet 10 enters the resin member 42 and expands in diameter, and the resin members 41 and 42 are fused together, sufficient bonding strength can be obtained.
  • FIG. 7 is a cross-sectional view showing a state in which the resin members 41 and 42 are joined by the self-piercing rivet 50 of the second embodiment.
  • the second embodiment differs from the first embodiment in the self-drilling rivet 50 and the shape of the die cavity. Other parts of the joining apparatus 1 are the same as those in the first embodiment.
  • a self-piercing rivet 50 according to the second embodiment has a head 51 and legs 52. When the resin members 41 and 42 are joined by the self-piercing rivet 50, the tip portion of the leg portion 52 of the self-piercing rivet 50 penetrates the resin members 41 and 42, and the diameter of the portion protruding from the lower surface of the resin member 42 is increased. Then, the resin members 41 and 42 are joined.
  • the self-piercing rivet 50 is heated by high frequency electromagnetic induction.
  • the vicinity of the interface between the resin members 41 and 42 adjacent to the legs 52 of the self-piercing rivet 50 is heated and softened or melted.
  • the front end of the leg 52 penetrates the upper resin member 41, further penetrates the lower resin member 42, and protrudes from the lower surface of the lower resin member 42.
  • the die cavity has substantially the same shape as in the first embodiment.
  • the distal end portion of the leg portion 52 is enlarged in diameter, and the resin member 41, 42 is sandwiched between the enlarged diameter leg portion 52 and the head portion 51 and coupled.
  • the resin members 41 and 42 are fused at a reduced temperature to form a fused portion 43.
  • FIG. 8 is a bottom view after joining of a modified example of the self-piercing rivet 50 of the second embodiment shown in FIG.
  • the leg portion 52 ′ of the self-piercing rivet 50 ′ has four slits formed in the vertical direction so as to be divided into four.
  • the leg portion 52 ′ of the self-piercing rivet 50 ′ is opened separately from the four leg portions 52a, b, c, and d. Since the modified self-drilling rivet 50 ′ is divided into four leg portions 52a, 52b, 52c, and 52d and opened, it is easy to expand the diameter. Further, since the open leg portions 52a, b, c, d are in contact with the lower resin member 42 in a large area, a strong bonding strength can be obtained.
  • FIG. 9 is a perspective view of a self-piercing rivet 60 according to a third embodiment of the present invention.
  • the third embodiment differs from the second embodiment in the self-drilling rivet 60 and the shape of the die cavity.
  • the self-piercing rivet 60 is a staple-shaped fitting, that is, a U-shaped fitting having a rectangular cross section, and has a head 61 and two legs 62.
  • the cavity of the die is shaped like a stapler and can be bent so that the two legs 62 can be bent inward.
  • FIG. 10 is a cross-sectional view showing a state in which the resin members 41 and 42 are joined using the self-piercing rivet 60.
  • a self-piercing rivet 60 is driven from above the upper resin member 41, and the two legs 62 penetrate the upper resin member 41 and the lower resin member 42, from the lower surface of the lower resin member 42. Get out.
  • the self-piercing rivet 60 is heated by high frequency electromagnetic induction heating.
  • the vicinity of the interface between the resin members 41 and 42 close to the leg portion 62 of the self-piercing rivet 60 is melted, and the resin members 41 and 42 are fused to form a fused portion 43.
  • the front end portion 62c of the leg portion 62 protruding from the lower surface of the resin member 42 is bent inward so as to approach each other by a die cavity (not shown).
  • the head 61 and the bent tip 62c are joined with the resin members 41 and 42 interposed therebetween.
  • a member that supports the self-piercing rivet 60 is used in the pre-clamp 33 of the joining apparatus 1.
  • FIG. 11 is a cross-sectional view showing a state in which the resin members 41 and 44 are joined by the self-piercing rivet 70 of the fourth embodiment.
  • the fourth embodiment differs from the first embodiment in the shapes of the self-piercing rivet 70 and the die cavity.
  • the self-piercing rivet 70 of the fourth embodiment has a nail shape. That is, it has a head 71 and elongated leg portions 72 extending from the head 71.
  • the outer periphery of the leg 72 is provided with irregularities 72d. Due to the unevenness 72d, the self-piercing rivet 70 is difficult to come off. Since the tip of the leg 72 is not bent, the upper surface of the die (not shown) is flat.
  • the self-piercing rivet 70 is made of a conductor such as iron, aluminum, or copper, and is heated by high frequency electromagnetic induction heating.
  • the vicinity of the interface between the resin members 41 and 44 adjacent to the leg portion 72 of the self-piercing rivet 70 is melted at the time of joining, and the resin members 41 and 44 are fused to form a fused portion 43.
  • the melted portions of the resin members 41 and 44 are fixed to the unevenness 72d and are more difficult to come off.
  • the lower resin member 44 is thicker than the resin member 42, and the tips of the legs 72 of the self-piercing rivet 70 do not penetrate the lower resin member 44 and remain inside.
  • a member that supports the self-piercing rivet 70 from falling down in the pre-clamp 33 of the joining apparatus 1 is used.
  • the irregularities on the outer peripheral part of the leg part 72 are spiral grooves. Furthermore, a groove into which the tip of a screwdriver can be inserted is formed on the upper surface of the head 71. In this way, the self-piercing rivet 70 ′ can be easily removed by driving it with a die and punch and then turning it with a screwdriver.
  • FIG. 12 is a perspective view of a self-piercing rivet 80 of the fifth embodiment.
  • a self-piercing rivet 80 is different from the fourth embodiment.
  • the self-piercing rivet 80 is a plate-shaped metal fitting in the shape of a baseball base as a whole. Concavities and convexities 82d are formed on two sides of the self-piercing rivet 80.
  • the lower end of the self-piercing rivet 80 is thin and easy to insert into the resin members 41 and 44. The lower end portion does not penetrate the lower resin member 44 and remains inside. Since the tip of the leg 72 is not bent, the upper surface of the die (not shown) is flat.
  • the self-piercing rivet 80 is heated by high frequency electromagnetic induction is the same as in the other embodiments.
  • the resin members 41 and 44 can be joined so as not to rotate with each other.
  • a member that supports the self-piercing rivet 80 is used in the pre-clamp 33 of the joining apparatus 1.
  • a self-piercing clip when a self-piercing clip is heated by high-frequency electromagnetic induction heating and a self-piercing rivet is driven, a part of the resin member is heated and melted by the heated self-piercing clip. Let Since it joins by self-piercing type

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Insertion Pins And Rivets (AREA)
  • Connection Of Plates (AREA)

Abstract

A joining device whereby damage to a resin member is unlikely to occur when joining a plurality of resin members by using a self-piercing rivet. The joining device (1) a punch (31) to punch and join the self-piercing rivet (10) to the plurality of resin members (41, 42) arranged upon a die (20). The joining device (1) comprises: a die that receives a resin member and a leg section (12) of the self-piercing rivet; a die support member (25) comprising an insulating body, for supporting the die; a high-frequency electromagnetic induction coil (26) arranged inside the die support member; a pre-clamp (33) comprising an insulating body, for fixing the resin member on the die; a high-frequency electromagnetic induction coil (36) wound around the pre-clamp; and the punch (31) comprising an insulating body, for punching the self-piercing rivet. The plurality of resin members are joined by the punching of the self-piercing rivet and the fusing of the plurality of resin members.

Description

樹脂部材の接合装置、接合構造及び接合方法Resin member joining apparatus, joining structure and joining method
　本発明は、複数の樹脂部材を結合する結合装置、結合構造及び結合方法に関する。特に、最上層の樹脂部材の上から自己穿孔型リベットを打ち込み、樹脂部材同士を融着させて接合する接合装置、接合構造及び接合方法に関する。 The present invention relates to a coupling device, a coupling structure, and a coupling method for coupling a plurality of resin members. In particular, the present invention relates to a bonding apparatus, a bonding structure, and a bonding method in which a self-piercing rivet is driven from above the uppermost resin member and the resin members are bonded together.
　部材同士を接合するのに自己穿孔型リベットを用いる方法がある。自己穿孔型リベットによる接合方法は、上面にキャビティが形成されたダイの上に２枚の部材（金属板）を置き、大径の頭部と、頭部から延びる脚部とを有する自己穿孔型リベットを上側の部材の上に位置決めする。パンチにより自己穿孔型リベットを部材に打ち込むと、自己穿孔型リベットの脚部が上側の部材を貫通し、脚部は下側の部材内に入って広がる。自己穿孔型リベットの打ち込みにより、上側の部材と下側の部材とはキャビティ内で塑性変形し、自己穿孔型リベットの頭部と拡開した脚部とにより、上側の部材と下側の部材とが接合される。 There is a method of using a self-drilling rivet to join members together. The bonding method using a self-piercing rivet is a self-piercing type in which two members (metal plates) are placed on a die having a cavity formed on the upper surface, and have a large-diameter head and legs extending from the head. Position the rivet over the upper member. When the self-piercing rivet is driven into the member by punching, the leg portion of the self-piercing rivet passes through the upper member, and the leg portion extends into the lower member. By driving the self-piercing rivet, the upper member and the lower member are plastically deformed in the cavity, and the upper member and the lower member are Are joined.
　自己穿孔型リベットは、自己穿孔型リベットを通すための孔を予め部材に加工する必要がなく、自己穿孔型リベットの打ち込みにより、部材を接合することが出来る。そのため、複数枚の金属製の部材同士を効率的に高強度で接合することができる。 The self-piercing rivet does not require a hole for passing the self-piercing rivet into the member in advance, and the members can be joined by driving the self-piercing rivet. Therefore, a plurality of metal members can be efficiently bonded with high strength.
　近年、自動車のボデーは軽量化が進められ、アルミニウムボデーも採用されている。アルミニウムボデーパネルの接合に適した自己穿孔型リベットの需要は増大している。特に、自己穿孔型リベットは、パンチ側の部材は穿通するが、ダイに隣接する受側の部材は貫通せずにその中に留まるように打込まれるので、受側の部材の表面にはリベット穿通孔が形成されない。そのため、部材への密封性が損なわれず、また外観がそのまま維持されるという利点がある。 In recent years, the weight of automobile bodies has been reduced, and aluminum bodies have also been adopted. The demand for self-drilling rivets suitable for joining aluminum body panels is increasing. In particular, a self-drilling rivet penetrates the punch-side member, but the receiving-side member adjacent to the die is driven so as to remain in it without penetrating, so that the surface of the receiving-side member has a rivet. A through hole is not formed. Therefore, there is an advantage that the sealing performance to the member is not impaired and the appearance is maintained as it is.
　自己穿孔型リベットを樹脂部材の接合に用いる必要性が高まっている。しかし、自己穿孔型リベットの脚部が拡径し、部材内に食い込む寸法は0.1～1.0ｍｍ程度である。そのため、自己穿孔型リベットにより、樹脂のような強度の弱い部材同士を接合すると、十分な接合強度を得ることができない。
　また、樹脂は割れやすいので、自己穿孔型リベットが圧入されるとき、ひびが入り、又は部材が破損し、部材の強度が低下するおそれがある。 The need to use self-piercing rivets for joining resin members is increasing. However, the diameter of the leg portion of the self-piercing rivet is about 0.1 to 1.0 mm so that the leg bites into the member. For this reason, when members having weak strength such as resin are joined together by self-piercing rivets, sufficient joining strength cannot be obtained.
In addition, since the resin is easily broken, when the self-piercing rivet is press-fitted, there is a possibility that the member will crack or the member may be broken, and the strength of the member may be reduced.
　特許文献１は、自己穿孔型リベットを被接合部材である樹脂部品に打込み、先端部を拡開して２つの樹脂部品を接合する方法を開示する。特許文献１では、下穴を有しない２つの樹脂部品に、軸孔を有する自己穿孔型リベットを打込み、自己穿孔型リベット打込みに伴い発生した抜きくずを自己穿孔型リベット軸孔内へ圧入しつつ押し込んで、軸孔内に残留させ、かしめ付け強度に有効に作用させるようにしている。
　しかし、特許文献１は樹脂部品を接合するとき、樹脂部品を加熱するものではない。そのため、自己穿孔型リベットを樹脂部品に打込むとき、割れが生じたり、亀裂が入ったりするおそれがある。 Patent Document 1 discloses a method in which a self-drilling rivet is driven into a resin part that is a member to be joined, and a tip part is expanded to join two resin parts. In Patent Document 1, a self-drilling rivet having a shaft hole is driven into two resin parts not having a pilot hole, and a chip generated by driving the self-drilling rivet is pressed into the self-drilling rivet shaft hole. It is pushed in so that it remains in the shaft hole and effectively acts on the caulking strength.
However, Patent Document 1 does not heat resin parts when joining resin parts. Therefore, when the self-piercing rivet is driven into the resin part, there is a possibility that a crack may occur or a crack may occur.
　特許文献２は、２以上の樹脂部材の重ね合わせ箇所をセルフピアス（自己穿孔型）リベットを使用して接続する接続方法を開示する。少なくとも最下層に熱可塑性樹脂をマトリックス樹脂とする樹脂部材を配し、少なくとも最下層の樹脂部材を熱処理してマトリックス樹脂を溶融させた状態でセルフピアスリベットを打込んで接続する。リベットダイス（ダイ）にヒータを内蔵し、ヒータにより加熱しマトリックス樹脂を溶融させている。
　特許文献２の方法は、マトリックス樹脂を溶融させた状態でセルフピアスリベットを打込むので、セルフピアスリベット打ち込みの際に最下層の樹脂材料が割れる問題が解決されるとしている。
　しかし、特許文献２の締結方法でマトリックス樹脂を溶融させるには、加熱されたリベットダイス上にマトリックス樹脂を一定時間載せて加熱する必要がある。そのため、作業時間が長くなるという問題がある。 Patent Document 2 discloses a connection method in which two or more resin members are overlapped using a self-piercing (self-piercing type) rivet. A resin member having a thermoplastic resin as a matrix resin is disposed at least in the lowermost layer, and at least the lowermost resin member is heat-treated and a self-piercing rivet is driven and connected in a molten state. A heater is built in a rivet die (die) and heated by the heater to melt the matrix resin.
According to the method of Patent Document 2, since the self-piercing rivet is driven in a state where the matrix resin is melted, the problem that the lowermost resin material breaks when the self-piercing rivet is driven is solved.
However, in order to melt the matrix resin by the fastening method of Patent Document 2, it is necessary to heat the matrix resin on a heated rivet die for a certain period of time. Therefore, there is a problem that the working time becomes long.
　特許文献３は、２以上の樹脂部材をその間に導電性の金属板を挟んで重ね合わせ、金属板に通電して、金属板と接する樹脂部材の界面を溶融させて金属板を溶着させ、重ね合わせ箇所にセルフピアスリベットを打ち込み、最下層の樹脂部材内部まで到達させる接続方法を開示する。特許文献３は、溶着と、リベット接続と、セルフピアスリベットが金属板を貫通した際に出来るバリが金属板の下層の樹脂部材に食い込むことによって、樹脂部材同士を接続する。 In Patent Document 3, two or more resin members are stacked with a conductive metal plate sandwiched therebetween, and the metal plate is energized to melt the interface of the resin member in contact with the metal plate to weld the metal plate. A connection method is disclosed in which self-piercing rivets are driven into the mating locations to reach the inside of the lowermost resin member. Patent Document 3 connects resin members by welding, rivet connection, and a burr formed when a self-piercing rivet penetrates a metal plate into a resin member under the metal plate.
　しかし、特許文献３は、樹脂部材の間に金属板を介在させる必要があるので、接続部の厚さが厚くなる。また、金属板に通電して金属板に生じるジュール熱により加熱するので、樹脂部材が溶融するまで加熱に時間がかかり、作業時間が長くなるという問題がある。
　更に、広い面積の樹脂部材の多数の箇所を接続する場合は、広い面積の金属板に通電して加熱することになり、効率的ではない。 However, in Patent Document 3, since it is necessary to interpose a metal plate between the resin members, the thickness of the connection portion is increased. Moreover, since it heats with the Joule heat which arises in a metal plate when it supplies with electricity to a metal plate, it takes time until a resin member fuse | melts, and there exists a problem that work time becomes long.
Furthermore, when connecting a large number of locations in a resin member having a large area, the metal plate having a large area is energized and heated, which is not efficient.
　このように、自己穿孔型リベットにより樹脂部材を接合しようとすると、樹脂部材に孔あけ加工しておかなくても簡単に樹脂部材を接合できるが、樹脂部材にひび、割れが発生するおそれがある。
　特許文献１は、樹脂部材に生じる割れを考慮していない。特許文献２～３の自己穿孔型リベットによる接合方法は、樹脂部材を加熱し一部を溶融させて接合するので樹脂部材に割れは発生しにくい。しかし、接合する際に樹脂部材をジュール熱により加熱するので、加熱に時間がかかり、広い範囲を加熱するので加熱エネルギーに無駄が多いという問題がある。 As described above, when the resin member is joined by the self-piercing rivet, the resin member can be easily joined without drilling the resin member, but the resin member may be cracked or cracked. .
Patent document 1 does not consider the crack which arises in a resin member. In the joining method using the self-piercing rivets disclosed in Patent Documents 2 to 3, since the resin member is heated and partially melted, the resin member is hardly cracked. However, since the resin member is heated by Joule heat at the time of joining, there is a problem that heating takes time and a wide range is heated, so that heating energy is wasted.
　そのため、複数の樹脂部材を自己穿孔型リベットにより接合する場合に、樹脂部材に割れが発生しにくい接合装置、接合構造及び接合方法が求められていた。
　また、樹脂部材を高い強度で安定して接合することが出来る接合装置、接合構造及び接合方法が求められていた。 Therefore, when joining a plurality of resin members with a self-piercing rivet, a joining device, a joining structure, and a joining method that are unlikely to cause cracks in the resin member have been demanded.
Further, there has been a demand for a joining device, a joining structure, and a joining method capable of stably joining resin members with high strength.
特公昭６２‐２３１６４号公報Japanese Examined Patent Publication No. 62-23164 国際公開第２０１２／０７７１９６号International Publication No. 2012/071196 特開２０１３－２５０５号公報JP2013-2505A
　本発明の目的は、複数の樹脂部材を自己穿孔型リベットにより接合する場合、樹脂部材に破損が発生しにくい樹脂部材の接合装置、接合構造及び接合方法を提供することである。
　本発明の別の目的は、樹脂部材を高い強度で安定して接合することが出来る接合装置、接合構造及び接合方法を提供することである。 An object of the present invention is to provide a resin member joining apparatus, a joining structure, and a joining method in which, when a plurality of resin members are joined by a self-piercing rivet, the resin member is hardly damaged.
Another object of the present invention is to provide a bonding apparatus, a bonding structure, and a bonding method capable of stably bonding resin members with high strength.
　この目的を達成するため、本発明者は、高周波電磁誘導加熱により、自己穿孔型リベットを加熱し、自己穿孔型リベットを打ち込むとき、加熱された自己穿孔型リベットにより、樹脂部材の一部を加熱して溶融させ、自己穿孔型リベットにより接合すると共に、樹脂部材同士を融着させて接合する接合装置、接合構造及び方法を発明した。樹脂部材が溶融した状態で自己穿孔型リベットを打ち込むので、樹脂部材に割れが生じず、強い強度で接合することが出来る。 In order to achieve this object, the present inventors heated a self-piercing rivet by high-frequency electromagnetic induction heating, and when driving the self-piercing rivet, heated a part of the resin member by the heated self-piercing rivet. The present invention invented a joining apparatus, a joining structure, and a method for melting and joining by self-piercing rivets and joining the resin members by fusing them together. Since the self-piercing rivet is driven in a state where the resin member is melted, the resin member is not cracked and can be joined with high strength.
　本発明の１態様は、ダイ上に配置された複数の樹脂部材に自己穿孔型リベットを打込んで接合する接合装置であって、
　前記樹脂部材と、前記樹脂部材上に配置された前記自己穿孔型リベットの脚部を受けるダイと、
　前記ダイを支持するため、絶縁体で出来たダイ支持部材と、
　前記ダイ上に前記複数の樹脂部材を固定するため、絶縁体で出来た円筒形のプリクランプと、
　前記プリクランプの周りに巻き回された高周波電磁誘導コイルと、
　前記自己穿孔型リベットを前記複数の樹脂部材に打ち込むため、絶縁体で出来たパンチと、を備え、
　前記自己穿孔型リベットを高周波電磁誘導加熱し、前記複数の樹脂部材の一部を溶融させた状態で前記自己穿孔型リベットを打ち込み、前記複数の樹脂部材を接合することを特徴とする接合装置である。 One aspect of the present invention is a joining device for driving and joining self-piercing rivets to a plurality of resin members arranged on a die,
The resin member, and a die that receives the legs of the self-piercing rivet disposed on the resin member;
A die support member made of an insulator to support the die; and
In order to fix the plurality of resin members on the die, a cylindrical pre-clamp made of an insulator,
A high-frequency electromagnetic induction coil wound around the pre-clamp;
In order to drive the self-piercing rivet into the plurality of resin members, a punch made of an insulator is provided,
A bonding apparatus characterized in that the self-piercing rivet is heated by high frequency electromagnetic induction, the self-piercing rivet is driven in a state where a part of the plurality of resin members is melted, and the plurality of resin members are joined. is there.
　ダイ支持部材と、プリクランプと、パンチとは、絶縁体で出来ているので高周波電磁誘導加熱されない。自己穿孔型リベットは高周波電磁誘導加熱され、樹脂部材は自己穿孔型リベットにより加熱される。樹脂部材の一部が溶融した状態で、自己穿孔型リベットが打ち込まれるので、樹脂部材に破損が発生しにくい。冷却後、樹脂部材の溶融した部分は融着し、また樹脂部材は自己穿孔型リベットにより接合されるので、高い強度で安定して樹脂部材を接合することが出来る。 The die support member, the pre-clamp, and the punch are made of an insulator and are not heated by high frequency electromagnetic induction. The self-piercing rivet is heated by high frequency electromagnetic induction, and the resin member is heated by the self-piercing rivet. Since the self-piercing rivet is driven in a state where a part of the resin member is melted, the resin member is hardly damaged. After cooling, the melted portion of the resin member is fused, and the resin member is bonded by the self-piercing rivet, so that the resin member can be bonded stably with high strength.
　前記ダイ支持部材内に配置された別の高周波電磁誘導コイルを備えることが好ましい。
　ダイ支持部材内にも別の高周波電磁誘導コイルが配置されていると、自己穿孔型リベットを下からも高周波電磁誘導加熱するので、樹脂部材内に入る自己穿孔型リベットの脚部を効果的に加熱することが出来る。 It is preferable to provide another high-frequency electromagnetic induction coil disposed in the die support member.
If another high-frequency electromagnetic induction coil is also arranged in the die support member, the self-piercing rivet is also heated from the bottom by high-frequency electromagnetic induction heating. Can be heated.
　前記高周波電磁誘導コイルで発生した磁界を集中するため、前記パンチと前記自己穿孔型リベットとの間に、円柱形の磁心部材を有することが好ましい。 In order to concentrate the magnetic field generated by the high-frequency electromagnetic induction coil, it is preferable to have a cylindrical magnetic core member between the punch and the self-piercing rivet.
　前記磁心部材はフェライトで出来ていることが好ましい。
　磁心部材がフェライトで出来ていると、ダイにより、磁界を集中することが出来る。 The magnetic core member is preferably made of ferrite.
If the magnetic core member is made of ferrite, the magnetic field can be concentrated by the die.
　前記ダイは絶縁体で出来ていることが好ましい。
　ダイが絶縁体で出来ていると、高周波電磁誘導により加熱されず、樹脂部材がダイに溶着するのを防止することが出来る。 The die is preferably made of an insulator.
If the die is made of an insulator, it is not heated by high frequency electromagnetic induction, and the resin member can be prevented from welding to the die.
　又は、前記ダイはフェライトで出来ていることが好ましい。
　ダイがフェライトで出来ていると、ダイにより、磁界を集中することが出来る。 Alternatively, the die is preferably made of ferrite.
If the die is made of ferrite, the magnetic field can be concentrated by the die.
　前記ダイ支持部材内に冷却水通路を有することが好ましい。
　冷却水通路があると、ダイを冷却し、樹脂部材がダイに溶着するのを防止することが出来、また高周波電磁誘導コイルの過熱を防止することが出来る。 It is preferable to have a cooling water passage in the die support member.
When there is a cooling water passage, the die can be cooled, the resin member can be prevented from being welded to the die, and overheating of the high frequency electromagnetic induction coil can be prevented.
　本発明の別の態様は、大径の頭部と前記頭部から垂下する中空の脚部とを有する自己穿孔型リベットを、ダイ上に配置された複数の樹脂部材に打込んだ接合構造であって、複数の前記樹脂部材同士が高周波電磁誘導加熱された自己穿孔型リベットにより軟化又は溶融して融着され、前記自己穿孔型リベットの前記脚部は、上側の前記樹脂部材を貫通し、下側の前記樹脂部材内で拡径して、前記樹脂部材が接合されることを特徴とする接合構造である。 Another aspect of the present invention is a joining structure in which a self-piercing rivet having a large-diameter head and hollow legs hanging from the head is driven into a plurality of resin members disposed on a die. A plurality of the resin members are softened or melted and fused by a self-piercing rivet heated by high frequency electromagnetic induction, and the legs of the self-piercing rivet penetrate the upper resin member, The joint structure is characterized in that the diameter of the resin member is increased in the lower resin member and the resin member is joined.
　本発明の更に別の態様は、自己穿孔型リベットを、ダイ上に配置された複数の樹脂部材に打込む接合方法であって、
　前記ダイ上に複数の樹脂部材を配置し、
　前記複数の樹脂部材をプリクランプにより上方から押えて固定し、
　前記プリクランプ内の前記複数の樹脂部材上に、前記自己穿孔型リベットを配置し、
　高周波電磁誘導コイルに高周波電流を流して、高周波電磁誘導加熱により、前記自己穿孔型リベットを予め加熱し、
　前記高周波電磁誘導コイルに高周波電流を流しながら、前記自己穿孔型リベットを前記パンチにより前記複数の樹脂部材に打ち込み、
　前記複数の樹脂部材の前記自己穿孔型リベットに近接する部分を溶融させ、
　前記高周波電磁誘導コイルに高周波電流を流すのをやめ、溶融した前記複数の樹脂部材の部分を融着させる段階を備え、
　前記自己穿孔型リベットの打ち込みと、前記複数の樹脂部材同士の融着とにより、前記複数の樹脂部材を接合することを特徴とする接合方法である。 Still another aspect of the present invention is a bonding method for driving a self-piercing rivet into a plurality of resin members arranged on a die,
A plurality of resin members are arranged on the die,
The plurality of resin members are fixed by pressing from above with a pre-clamp,
Placing the self-piercing rivets on the plurality of resin members in the pre-clamp;
A high-frequency current is passed through the high-frequency electromagnetic induction coil, and the self-piercing rivet is preheated by high-frequency electromagnetic induction heating,
While flowing a high-frequency current through the high-frequency electromagnetic induction coil, the self-piercing rivet is driven into the plurality of resin members by the punch,
Melting a portion of the plurality of resin members adjacent to the self-piercing rivet;
Stopping the flow of a high-frequency current to the high-frequency electromagnetic induction coil, and fusing the melted portions of the plurality of resin members,
The joining method is characterized in that the plurality of resin members are joined by driving the self-piercing rivet and fusing the plurality of resin members.
　本発明によれば、複数の樹脂部材を自己穿孔型リベットにより接合する場合、樹脂部材に破損が発生しにくい樹脂部材の接合装置、接合構造及び接合方法を得ることができる。
　また、樹脂部材を高い強度で安定して接合することが出来る接合装置、接合構造及び接合方法を得ることが出来る。 According to the present invention, when a plurality of resin members are joined by a self-piercing rivet, it is possible to obtain a resin member joining device, a joining structure, and a joining method in which a resin member is hardly damaged.
Moreover, the joining apparatus, joining structure, and joining method which can join the resin member stably with high intensity | strength can be obtained.
本発明の接合装置の断面図である。It is sectional drawing of the joining apparatus of this invention. 本発明の接合装置に使用する高周波電磁誘導加熱装置の構成を示す図である。It is a figure which shows the structure of the high frequency electromagnetic induction heating apparatus used for the joining apparatus of this invention. 本発明の接合装置を使用し、第１の実施形態の自己穿孔型リベットをセットした状態の接合部分の断面図である。It is sectional drawing of the junction part of the state which set the self-drilling type rivet of 1st Embodiment using the joining apparatus of this invention. 図３の状態から自己穿孔型リベットが樹脂部材に打ち込まれていく中間段階を示す断面図である。FIG. 4 is a cross-sectional view showing an intermediate stage in which a self-piercing rivet is driven into a resin member from the state of FIG. 3. 図４の状態から自己穿孔型リベットが樹脂部材に更に打ち込まれ樹脂部材が接合された段階を示す断面図である。FIG. 5 is a cross-sectional view showing a stage where a self-piercing rivet is further driven into the resin member from the state of FIG. 本発明の第１の実施形態の自己穿孔型リベットを使用して、樹脂部材同士を接合した状態を示す断面図である。It is sectional drawing which shows the state which joined the resin members using the self-piercing-type rivet of the 1st Embodiment of this invention. 本発明の第２の実施形態の自己穿孔型リベットを使用して、樹脂部材同士を接合した状態を示す断面図である。It is sectional drawing which shows the state which joined the resin members using the self-piercing-type rivet of the 2nd Embodiment of this invention. 本発明の第２の実施形態の変形例の自己穿孔型リベットを使用して、樹脂部材同士を接合した状態を示す底面図である。It is a bottom view which shows the state which joined the resin members using the self-piercing-type rivet of the modification of the 2nd Embodiment of this invention. 本発明の第３の実施形態の自己穿孔型リベットの斜視図である。It is a perspective view of the self-drilling type rivet of the 3rd Embodiment of this invention. 本発明の第３の実施形態の自己穿孔型リベットを使用して、樹脂部材同士を接合した状態を示す断面図である。It is sectional drawing which shows the state which joined the resin members using the self-piercing-type rivet of the 3rd Embodiment of this invention. 本発明の第４の実施形態の自己穿孔型リベットを使用して、樹脂部材同士を接合した状態を示す断面図である。It is sectional drawing which shows the state which joined the resin members using the self-piercing-type rivet of the 4th Embodiment of this invention. 本発明の第５の実施形態の自己穿孔型リベットの斜視図である。It is a perspective view of the self-drilling type rivet of the 5th Embodiment of this invention.
　以下、本発明の実施形態による高周波電磁誘導加熱により加熱した自己穿孔型リベットにより接合する接合装置、接合構造とその接合方法について説明する。第１の実施形態について詳細に説明し、次に、第２～５の実施形態について説明する。第２～５の実施形態は、第１の実施形態とは自己穿孔型リベットの形状が異なり、これに伴いダイのキャビティの形状が異なる。接合装置1の他の点については、第１の実施形態とほぼ同様である。
　なお、本発明の実施形態の説明において、図１の上を上方向として説明する。 Hereinafter, a bonding apparatus, a bonding structure, and a bonding method for bonding with a self-piercing rivet heated by high-frequency electromagnetic induction heating according to an embodiment of the present invention will be described. The first embodiment will be described in detail, and then the second to fifth embodiments will be described. The second to fifth embodiments are different from the first embodiment in the shape of the self-drilling rivet, and accordingly, the shape of the die cavity is different. Other points of the joining device 1 are substantially the same as those of the first embodiment.
In the description of the embodiment of the present invention, the upper side of FIG.
（第１の実施形態）
　図１は、本発明の第１の実施形態による接合装置1の断面図である。接合装置1は、樹脂部材41,42を重ね合わせ、高周波電磁誘導加熱により自己穿孔型リベット10を加熱し、樹脂部材41,42を溶融させながら、自己穿孔型リベット10を打ち込み、自己穿孔型リベット10の打ち込みと、樹脂部材41,42同士の溶着により接合するものである。 (First embodiment)
FIG. 1 is a cross-sectional view of a bonding apparatus 1 according to a first embodiment of the present invention. The joining apparatus 1 superposes resin members 41 and 42, heats the self-piercing rivet 10 by high-frequency electromagnetic induction heating, drives the self-piercing rivet 10 while melting the resin members 41 and 42, and self-piercing rivets Bonding is performed by driving 10 and welding the resin members 41 and 42 together.
　接合装置1は、自己穿孔型リベット10を受けるダイ20を備える。ダイ20は、上面に自己穿孔型リベット10の脚部12を受けるためのキャビティ21を有する。キャビティ21は、軸方向中心部から外周に向かって高さが低くなる円錐形の円錐面22と、円錐面22を取り囲む側面23とを有する。ダイ20のキャビティ21は、樹脂部材41,42を受けて成形すると共に、自己穿孔型リベット10の脚部12の先端を拡径するように変形させる。 The joining apparatus 1 includes a die 20 that receives a self-piercing rivet 10. The die 20 has a cavity 21 for receiving the legs 12 of the self-piercing rivet 10 on the upper surface. The cavity 21 has a conical conical surface 22 whose height decreases from the axial center to the outer periphery, and a side surface 23 surrounding the conical surface 22. The cavity 21 of the die 20 is molded by receiving the resin members 41 and 42, and is deformed so that the tip of the leg portion 12 of the self-piercing rivet 10 is expanded.
　従来の金属部材を接合するための自己穿孔型リベット締結装置では、大きい加重で自己穿孔型リベットを打ち込むため、ダイは金属製であった。本発明では、ダイは高周波電磁誘導による発熱を抑えるため絶縁材料で作製することが出来る。本発明の実施形態による接合装置1では、ダイ20の材料は、ダイ支持部材25と同じセラミック等の絶縁体で出来ている。又は、後述する磁心部材32と同じ材料でダイ20を形成し、磁界を集中し磁力を強めることも出来る。 In the conventional self-piercing rivet fastening device for joining metal members, the die is made of metal because the self-piercing rivet is driven with a large load. In the present invention, the die can be made of an insulating material to suppress heat generation due to high frequency electromagnetic induction. In the bonding apparatus 1 according to the embodiment of the present invention, the material of the die 20 is made of the same insulator as the die support member 25 such as ceramic. Alternatively, the die 20 can be formed of the same material as the magnetic core member 32 described later, and the magnetic field can be concentrated to increase the magnetic force.
　ダイ20の下側には、ほぼ円筒形のダイ支持部材25が接続されている。ダイ支持部材25は、ダイ20を下方から支持する。ダイ支持部材25は、セラミック等の高周波電磁誘導で発熱しない絶縁体で形成されている。ダイ20とダイ支持部材25とは、同じ絶縁体で成形されているので、別体とせず、一体に成形することも出来る。 A substantially cylindrical die support member 25 is connected to the lower side of the die 20. The die support member 25 supports the die 20 from below. The die support member 25 is formed of an insulator that does not generate heat due to high frequency electromagnetic induction such as ceramic. Since the die 20 and the die support member 25 are formed of the same insulator, they can be integrally formed without being separated.
　円筒形のダイ支持部材25の内部には、冷却水を通すため、冷却水通路27が形成されている。冷却水通路27は断面が円形で、ダイ支持部材25の内部を縦方向に延びる。冷却水通路27は、ダイ20の下側へ入る通路とダイ20の下側から出る通路とが１本づつ設けられている。又はそれぞれ複数本設けることも出来る。冷却水通路27は、ダイ20の下側ではダイ20の底面22の下側の広い範囲に広がっている。冷却水は、ダイ20を冷却し、加熱された樹脂部材42がダイ20に溶着しないようにし、また高周波電磁誘導コイル26を冷却する。
　冷却水通路27の配置は、ダイ支持部材25の内部を螺旋形、円形など他の配置でダイ20の下側へ延びるようにすることも出来る。冷却水通路27は、ダイ支持部材25の内部に設けるのではなく、ダイ支持部材25の外側を取り囲むパイプとして別体で設けることも出来る。
　又は、ダイ支持部材25を外側と内側の２つの部材として、外側と内側の部材の間にパイプとして設けることも出来る。パイプは絶縁体で形成することが好ましい。冷却水通路27は任意であり、なくても良い。 A cooling water passage 27 is formed inside the cylindrical die support member 25 to allow the cooling water to pass therethrough. The cooling water passage 27 has a circular cross section and extends in the longitudinal direction inside the die support member 25. The cooling water passage 27 is provided with one passage entering the lower side of the die 20 and one passage exiting from the lower side of the die 20. Alternatively, a plurality of each can be provided. The cooling water passage 27 extends on the lower side of the die 20 over a wide range below the bottom surface 22 of the die 20. The cooling water cools the die 20, prevents the heated resin member 42 from welding to the die 20, and cools the high-frequency electromagnetic induction coil 26.
The arrangement of the cooling water passage 27 can be extended to the lower side of the die 20 in another arrangement such as a spiral shape or a circular shape inside the die support member 25. The cooling water passage 27 may be provided separately as a pipe surrounding the outside of the die support member 25, instead of being provided inside the die support member 25.
Alternatively, the die support member 25 can be provided as two members on the outside and the inside, and can be provided as a pipe between the outside and the inside members. The pipe is preferably formed of an insulator. The cooling water passage 27 is optional and may not be provided.
　冷却水通路27の内側は、ダイ支持部材25の内部壁である。内部壁の内側の空間には高周波電磁誘導コイル26が配置されている。高周波電磁誘導コイル26に電流が流されると、磁界が誘起される。 The inside of the cooling water passage 27 is an inner wall of the die support member 25. A high frequency electromagnetic induction coil 26 is arranged in the space inside the inner wall. When a current is passed through the high frequency electromagnetic induction coil 26, a magnetic field is induced.
　接合装置1のダイ20の上面には、接合するための樹脂部材41,42が、重ねて配置される。
　樹脂部材41,42は樹脂からなる。樹脂部材41,42のうち少なくとも一方は、熱可塑性樹脂である。下方の樹脂部材42が、熱可塑性樹脂であることが好ましい。自己穿孔型リベット10を打ち込むとき、下方の樹脂部材42が割れやすいので、下方の樹脂部材42が熱可塑性樹脂であれば、溶融し割れにくくなる。 On the upper surface of the die 20 of the bonding apparatus 1, resin members 41 and 42 for bonding are disposed so as to overlap each other.
The resin members 41 and 42 are made of resin. At least one of the resin members 41 and 42 is a thermoplastic resin. The lower resin member 42 is preferably a thermoplastic resin. When the self-piercing rivet 10 is driven, the lower resin member 42 is easily cracked. Therefore, if the lower resin member 42 is a thermoplastic resin, it is difficult to melt and crack.
　一方が熱可塑性樹脂であれば、その一方の可塑性樹脂が溶融し、他方の樹脂部材と融着することが出来る。熱可塑性樹脂としては、ポリプロピレン樹脂、ポリエチレン樹脂、ＡＢＳ樹脂、ポリカーボネート樹脂、ポリアミド樹脂等、又はこれらの樹脂の組み合わせを使用することが出来る。
　熱可塑性樹脂は、ガラス繊維又は炭素繊維等を混入した繊維強化樹脂とすることが出来る。 If one is a thermoplastic resin, the one plastic resin can be melted and fused with the other resin member. As the thermoplastic resin, polypropylene resin, polyethylene resin, ABS resin, polycarbonate resin, polyamide resin, or a combination of these resins can be used.
The thermoplastic resin can be a fiber reinforced resin mixed with glass fiber or carbon fiber.
　樹脂部材41の上面は、円筒形のプリクランプ33が当接する。プリクランプ33は、セラミック等の絶縁体で出来ている。プリクランプ33は、自己穿孔型リベット10を打ち込む間、樹脂部材41を上面から押さえ、樹脂部材41,42をプリクランプ33とダイ20との間に保持する。 The cylindrical pre-clamp 33 comes into contact with the upper surface of the resin member 41. The pre-clamp 33 is made of an insulator such as ceramic. The pre-clamp 33 holds the resin members 41 and 42 between the pre-clamp 33 and the die 20 while pressing the resin member 41 from the upper surface while driving the self-piercing rivet 10.
　プリクランプ33の内側には、樹脂部材41の上面に自己穿孔型リベット10が配置される。
　自己穿孔型リベット10は、鉄、アルミ、ステンレス等の導電体で出来ていて、誘導電流により発熱する。自己穿孔型リベット10は、円板状の頭部11と、頭部11から頭部11より小さい外径で下方に延びる円筒形の脚部12とを有する。自己穿孔型リベット10の脚部12の先端部が、樹脂部材41の上面に当接する。脚部12の先端部は、肉厚が薄く、樹脂部材41,42に打ち込むとき、樹脂部材41,42に孔をあけやすくなっている。
　自己穿孔型リベット10は、樹脂部材41,42に打ち込むとき、高周波電磁誘導加熱により加熱される。自己穿孔型リベット10の熱により、樹脂部材41,42が加熱され軟化または溶融し、温度が下がった後溶着するようになっている。 Inside the pre-clamp 33, the self-piercing rivet 10 is disposed on the upper surface of the resin member 41.
The self-piercing rivet 10 is made of a conductor such as iron, aluminum, and stainless steel, and generates heat due to an induced current. The self-piercing rivet 10 includes a disk-shaped head 11 and a cylindrical leg 12 that extends downward from the head 11 with an outer diameter smaller than that of the head 11. The distal end portion of the leg portion 12 of the self-piercing rivet 10 contacts the upper surface of the resin member 41. The distal end portion of the leg portion 12 is thin, and when the resin members 41 and 42 are driven, holes are easily formed in the resin members 41 and 42.
The self-piercing rivet 10 is heated by high-frequency electromagnetic induction heating when driven into the resin members 41 and 42. The resin members 41 and 42 are heated and softened or melted by the heat of the self-piercing rivet 10, and are welded after the temperature is lowered.
　自己穿孔型リベット10の頭部11の上面には、円柱形の磁心部材32が当接する。磁心部材32の下面の外径は、自己穿孔型リベット10の頭部11の外径とほぼ等しく、頭部11全体を押すことが出来る。磁心部材32は、フェライト等の磁性のある絶縁体の材料で出来ていて、高周波の磁界では発熱しない。磁心部材32は、磁界を集中し、磁力を高める作用をする。
　磁心部材32は、任意でありなくても良い。磁心部材32がない場合は、自己穿孔型リベット10の上面に、パンチ31が当接する。 A cylindrical magnetic core member 32 abuts on the upper surface of the head 11 of the self-piercing rivet 10. The outer diameter of the lower surface of the magnetic core member 32 is substantially equal to the outer diameter of the head 11 of the self-piercing rivet 10, and the entire head 11 can be pushed. The magnetic core member 32 is made of a magnetic insulator material such as ferrite and does not generate heat in a high frequency magnetic field. The magnetic core member 32 functions to concentrate the magnetic field and increase the magnetic force.
The magnetic core member 32 may not be optional. When there is no magnetic core member 32, the punch 31 abuts on the upper surface of the self-piercing rivet 10.
　磁心部材32の上には、円柱形のパンチ31が接続されている。パンチ31の材質は、セラミック等の絶縁体である。パンチ31は、磁心部材32と一体になって、高周波電磁誘導で加熱された自己穿孔型リベット10を樹脂部材41,42に打ち込む。 A cylindrical punch 31 is connected on the magnetic core member 32. The material of the punch 31 is an insulator such as ceramic. The punch 31 is integrated with the magnetic core member 32 and drives the self-piercing rivet 10 heated by high frequency electromagnetic induction into the resin members 41 and 42.
　円筒形のプリクランプ33を取り囲むように、高周波電磁誘導コイル36が配置される。
　高周波電磁誘導コイル36により発生した磁界は、磁心部材32により集中され、自己穿孔型リベット10は、集中した磁界により高周波電磁誘導加熱される。 A high frequency electromagnetic induction coil 36 is arranged so as to surround the cylindrical pre-clamp 33.
The magnetic field generated by the high frequency electromagnetic induction coil 36 is concentrated by the magnetic core member 32, and the self-piercing rivet 10 is heated by high frequency electromagnetic induction by the concentrated magnetic field.
　接合装置1では、樹脂部材41,42の上のパンチ側には、冷却水通路は設けられていないが、パンチ31と磁心部材32、高周波電磁誘導コイル36との周りにも冷却水通路を設けることも出来る。 In the bonding apparatus 1, a cooling water passage is not provided on the punch side above the resin members 41 and 42, but a cooling water passage is also provided around the punch 31, the magnetic core member 32, and the high-frequency electromagnetic induction coil 36. You can also
　本発明の第１の実施形態の高周波電磁誘導加熱について説明する。図２は、本発明の第１の実施形態の接合装置1に用いる高周波電磁誘導加熱装置のブロック図である。高周波電源55は３相200V等の交流電流を一旦直流に変換し、電子管や、サイリスタ、MOSFET、IGBTなどの素子により数100Hz～数MHzの高周波エネルギーを発生させる。 The high frequency electromagnetic induction heating according to the first embodiment of the present invention will be described. FIG. 2 is a block diagram of a high-frequency electromagnetic induction heating device used in the joining device 1 according to the first embodiment of the present invention. The high-frequency power supply 55 temporarily converts an alternating current such as three-phase 200 V into direct current, and generates high-frequency energy of several hundred Hz to several MHz using elements such as an electron tube, thyristor, MOSFET, and IGBT.
　整合部56は、高周波電源で発生した高周波エネルギーを、負荷である加熱部57に必要な電圧、電流に合わせて整合を行う。高周波電流の周波数、電流、時間は、接合する樹脂部材と導電体である自己穿孔型リベットにより、適切な値に設定する。
　整合部56から出る高周波電流は、加熱部57の高周波電磁誘導コイルに流され、自己穿孔型リベット10は、高周波電磁誘導加熱により加熱される。高周波電磁誘導加熱については公知であり、これ以上詳説しない。
　冷却水循環ユニット58は、高周波電源55、整合部56、加熱コイル57の部分に冷却水を流す。 The matching unit 56 matches the high-frequency energy generated by the high-frequency power source according to the voltage and current required for the heating unit 57 that is a load. The frequency, current, and time of the high-frequency current are set to appropriate values by the resin member to be joined and the self-piercing rivet that is a conductor.
The high frequency current output from the matching unit 56 is passed through the high frequency electromagnetic induction coil of the heating unit 57, and the self-piercing rivet 10 is heated by high frequency electromagnetic induction heating. High frequency electromagnetic induction heating is known and will not be described in further detail.
The cooling water circulation unit 58 allows the cooling water to flow through the high frequency power supply 55, the matching unit 56, and the heating coil 57.
　接合装置1の接合部分の断面図である図３～５を参照して、第１の実施形態の自己穿孔型リベット10により、樹脂部材41,42を接合する場合について説明する。
　図３は、図１の接合装置1の接合部分の拡大断面図である。ダイ20は、上面にキャビティ21を有する。キャビティ21の円錐面22はほぼ円錐形であり、側面23はほぼ円筒形である。
　ダイ20の上面に樹脂部材41,42を重ねて配置し、接合する部分の周りをプリクランプ33により押さえる。樹脂部材41の上面に、自己穿孔型リベット10を配置する。自己穿孔型リベット10は、大径の頭部11と頭部11から垂下する中空円筒の脚部12とを有する。 The case where the resin members 41 and 42 are joined by the self-piercing rivet 10 of the first embodiment will be described with reference to FIGS.
FIG. 3 is an enlarged cross-sectional view of a joining portion of the joining apparatus 1 of FIG. The die 20 has a cavity 21 on the upper surface. The conical surface 22 of the cavity 21 is substantially conical and the side surface 23 is substantially cylindrical.
Resin members 41 and 42 are placed on the upper surface of the die 20, and the periphery of the part to be joined is pressed by the pre-clamp 33. The self-piercing rivet 10 is disposed on the upper surface of the resin member 41. The self-piercing rivet 10 has a large-diameter head 11 and hollow cylindrical legs 12 depending from the head 11.
　自己穿孔型リベット10を打ち込む前に、高周波電磁誘導コイル26,36に高周波電流を流すと、磁界は自己穿孔型リベット10に集中し、自己穿孔型リベット10は高周波電磁誘導加熱される。そのため、樹脂部材41,42の自己穿孔型リベット10に近接した部分も加熱される。 When a high-frequency current is passed through the high-frequency electromagnetic induction coils 26 and 36 before driving the self-piercing rivet 10, the magnetic field is concentrated on the self-piercing rivet 10, and the self-piercing rivet 10 is heated by high-frequency electromagnetic induction. Therefore, portions of the resin members 41 and 42 adjacent to the self-piercing rivet 10 are also heated.
　図４は、自己穿孔型リベット10により樹脂部材41,42を接合する中間段階の断面図である。
　自己穿孔型リベット10がパンチ31（又は磁心部材32）により打込まれると、脚部12は、パンチ側の樹脂部材41を貫通し、受け側の樹脂部材42に突き刺さる。樹脂部材42は、脚部12により下方へ突き出され、樹脂部材42の突き出された部分は、キャビティ21の底面22に当たる。自己穿孔型リベット10の脚部12は内側から圧力を受け、またキャビティ21の円錐形の底面22により半径方向外方に導かれ、半径方向外方に拡径するように変形し始める。
　自己穿孔型リベット10は加熱されているので、自己穿孔型リベット10が打ち込まれると、樹脂部材41,42の自己穿孔型リベット10に接する部分も加熱され、一部が軟化、溶融する。 FIG. 4 is a cross-sectional view of an intermediate stage in which the resin members 41 and 42 are joined by the self-piercing rivet 10.
When the self-piercing rivet 10 is driven by the punch 31 (or the magnetic core member 32), the leg portion 12 penetrates the punch-side resin member 41 and pierces the receiving-side resin member 42. The resin member 42 protrudes downward by the leg portion 12, and the protruding portion of the resin member 42 contacts the bottom surface 22 of the cavity 21. The legs 12 of the self-piercing rivet 10 receive pressure from the inside and are guided radially outward by the conical bottom surface 22 of the cavity 21 and begin to deform so as to expand radially outward.
Since the self-piercing rivet 10 is heated, when the self-piercing rivet 10 is driven, portions of the resin members 41 and 42 that are in contact with the self-piercing rivet 10 are also heated, and some of them are softened and melted.
　図５は、図４の段階から更に接合動作が進み、自己穿孔型リベット10により樹脂部材41,42を接合した後の断面図である。自己穿孔型リベット10の脚部12は樹脂部材42を半径方向外方へ押しながら、半径方向外方に拡径するように変形する。
　樹脂部材41,42の一部は軟化、溶融しているので、自己穿孔型リベット10の脚部12は、樹脂部材41,42の内部に入りやすく、樹脂部材41,42の割れも発生しにくい。 FIG. 5 is a cross-sectional view after the joining operation proceeds further from the stage of FIG. 4 and the resin members 41 and 42 are joined by the self-piercing rivet 10. The leg portion 12 of the self-piercing rivet 10 is deformed so as to expand the diameter outward in the radial direction while pushing the resin member 42 outward in the radial direction.
Since some of the resin members 41 and 42 are softened and melted, the legs 12 of the self-piercing rivet 10 easily enter the resin members 41 and 42, and the resin members 41 and 42 are not easily cracked. .
　自己穿孔型リベット10の頭部11の上面が、樹脂部材41の上面と同一面となるまで自己穿孔型リベット10が打ち込まれると、自己穿孔型リベット10による接合が完了する。脚部12の先端はダイ20に隣接する受側の樹脂部材42を貫通せずにその中に留まる。樹脂部材42の中で拡径した脚部12と頭部11とによって樹脂部材41,42が挟まれる。高周波電流を停止すると、高周波電磁誘導加熱されていた自己穿孔型リベット10の温度は下がり、樹脂部材41と樹脂部材42との溶融していた部分は固化し、樹脂部材41と樹脂部材42とは融着し、相互に接合される。 When the self-piercing rivet 10 is driven until the top surface of the head 11 of the self-piercing rivet 10 is flush with the upper surface of the resin member 41, the joining by the self-piercing rivet 10 is completed. The tip of the leg 12 remains in the receiving member 42 adjacent to the die 20 without penetrating it. The resin members 41 and 42 are sandwiched between the leg portion 12 and the head portion 11 which are expanded in diameter in the resin member 42. When the high-frequency current is stopped, the temperature of the self-piercing rivet 10 that has been heated by high-frequency electromagnetic induction decreases, the melted portion of the resin member 41 and the resin member 42 is solidified, and the resin member 41 and the resin member 42 are Fused and joined together.
　図６は、図５のように接合した樹脂部材41,42を接合装置1から取外した状態を示す断面図である。自己穿孔型リベット10の脚部12に近接した樹脂部材41,42の界面付近は溶融し、その後温度が下がって固化し、樹脂部材41と42とが融着して、融着部43となっている。
　自己穿孔型リベット10の脚部12が打ち込まれるとき、樹脂部材41,42の一部は軟化し溶融しているので、樹脂部材41,42に割れは生じていない。 FIG. 6 is a cross-sectional view showing a state in which the resin members 41 and 42 joined as shown in FIG. 5 are removed from the joining apparatus 1. The vicinity of the interface between the resin members 41 and 42 close to the legs 12 of the self-piercing rivet 10 is melted, and then the temperature is lowered and solidified, and the resin members 41 and 42 are fused to form a fused portion 43. ing.
When the leg portion 12 of the self-piercing rivet 10 is driven, a part of the resin members 41 and 42 is softened and melted, so that the resin members 41 and 42 are not cracked.
　自己穿孔型リベット10の脚部12の先端部は、拡径して開いている。接合部の樹脂部材42は、ダイ20のキャビティ21内に押出されたので、樹脂部材42の接合部の下面は、下側に凸形状で、中央部がへこんでいる。
　自己穿孔型リベット10の脚部12の先端部は、樹脂部材42内に入り込んで拡径し、樹脂部材41と42とは融着しているので、十分な接合強度を得ることが出来る。 The distal end portion of the leg portion 12 of the self-piercing rivet 10 is expanded and opened. Since the resin member 42 at the joined portion is extruded into the cavity 21 of the die 20, the lower surface of the joined portion of the resin member 42 has a convex shape on the lower side and the center portion is recessed.
Since the distal end portion of the leg portion 12 of the self-piercing rivet 10 enters the resin member 42 and expands in diameter, and the resin members 41 and 42 are fused together, sufficient bonding strength can be obtained.
（第２の実施形態）
　図７は、第２の実施形態の自己穿孔型リベット50により樹脂部材41,42を接合した状態を示す断面図である。第２の実施形態は、自己穿孔型リベット50と、ダイのキャビティの形状とが、第１の実施形態とは異なる。接合装置1の他の部分は、第１の実施形態と同じである。第２の実施形態の自己穿孔型リベット50は、頭部51と脚部52とを有する。自己穿孔型リベット50により、樹脂部材41,42を接合すると、自己穿孔型リベット50の脚部52の先端部が樹脂部材41,42を貫通し、樹脂部材42の下面から出た部分が拡径し、樹脂部材41と42とを接合する。 (Second Embodiment)
FIG. 7 is a cross-sectional view showing a state in which the resin members 41 and 42 are joined by the self-piercing rivet 50 of the second embodiment. The second embodiment differs from the first embodiment in the self-drilling rivet 50 and the shape of the die cavity. Other parts of the joining apparatus 1 are the same as those in the first embodiment. A self-piercing rivet 50 according to the second embodiment has a head 51 and legs 52. When the resin members 41 and 42 are joined by the self-piercing rivet 50, the tip portion of the leg portion 52 of the self-piercing rivet 50 penetrates the resin members 41 and 42, and the diameter of the portion protruding from the lower surface of the resin member 42 is increased. Then, the resin members 41 and 42 are joined.
　自己穿孔型リベット50は、高周波電磁誘導加熱される。自己穿孔型リベット50の脚部52に近接した樹脂部材41,42の界面付近は加熱されて軟化又は溶融する。
　脚部52の先端部は上側の樹脂部材41を貫通し、更に下側の樹脂部材42を貫通して、下側の樹脂部材42の下面から突き出す。ダイのキャビティは、第１の実施形態とほぼ同じ形状である。脚部52の先端部は拡径し、拡径した脚部52と、頭部51との間に樹脂部材41,42を挟んで結合する。樹脂部材41と42とは温度が低下し融着して、融着部43となる。 The self-piercing rivet 50 is heated by high frequency electromagnetic induction. The vicinity of the interface between the resin members 41 and 42 adjacent to the legs 52 of the self-piercing rivet 50 is heated and softened or melted.
The front end of the leg 52 penetrates the upper resin member 41, further penetrates the lower resin member 42, and protrudes from the lower surface of the lower resin member 42. The die cavity has substantially the same shape as in the first embodiment. The distal end portion of the leg portion 52 is enlarged in diameter, and the resin member 41, 42 is sandwiched between the enlarged diameter leg portion 52 and the head portion 51 and coupled. The resin members 41 and 42 are fused at a reduced temperature to form a fused portion 43.
　図８は、図７に示す第２の実施形態の自己穿孔型リベット50の変形例の接合後の下面図である。変形例では、自己穿孔型リベット50'の脚部52'は、４つに分轄されるように縦方向に４本のスリットが形成されている。自己穿孔型リベット50'により樹脂部材41,42を接合するとき、自己穿孔型リベット50'の脚部52'は、４本の脚部52a,b,c,dに別れて開く。
　変形例の自己穿孔型リベット50'は、４本の脚部52a,b,c,dに分かれて開くので、拡径しやすい。また、開いた脚部52a,b,c,dが、下側の樹脂部材42と大きい面積で接するので、強い接合強度を得ることが出来る。 FIG. 8 is a bottom view after joining of a modified example of the self-piercing rivet 50 of the second embodiment shown in FIG. In the modification, the leg portion 52 ′ of the self-piercing rivet 50 ′ has four slits formed in the vertical direction so as to be divided into four. When the resin members 41 and 42 are joined by the self-piercing rivet 50 ′, the leg portion 52 ′ of the self-piercing rivet 50 ′ is opened separately from the four leg portions 52a, b, c, and d.
Since the modified self-drilling rivet 50 ′ is divided into four leg portions 52a, 52b, 52c, and 52d and opened, it is easy to expand the diameter. Further, since the open leg portions 52a, b, c, d are in contact with the lower resin member 42 in a large area, a strong bonding strength can be obtained.
（第３の実施形態）
　図９は、本発明の第３の実施形態の自己穿孔型リベット60の斜視図である。第３の実施形態は、自己穿孔型リベット60と、ダイのキャビティの形状とが、第２の実施形態とは異なる。自己穿孔型リベット60は、ステップル状の金具、即ち、断面が矩形のコの字形の金具であり、頭部61と、２本の脚部62とを有する。ダイのキャビティは、ステープラーの受けのような形状で、２本の脚部62を内側に曲げることの出来る形状である。 (Third embodiment)
FIG. 9 is a perspective view of a self-piercing rivet 60 according to a third embodiment of the present invention. The third embodiment differs from the second embodiment in the self-drilling rivet 60 and the shape of the die cavity. The self-piercing rivet 60 is a staple-shaped fitting, that is, a U-shaped fitting having a rectangular cross section, and has a head 61 and two legs 62. The cavity of the die is shaped like a stapler and can be bent so that the two legs 62 can be bent inward.
　図１０は、自己穿孔型リベット60を使用して、樹脂部材41,42を接合した状態を示す断面図である。自己穿孔型リベット60を上側の樹脂部材41の上から打ち込み、２本の脚部62は、上側の樹脂部材41と下側の樹脂部材42とを貫通し、下側の樹脂部材42の下面から出る。 FIG. 10 is a cross-sectional view showing a state in which the resin members 41 and 42 are joined using the self-piercing rivet 60. A self-piercing rivet 60 is driven from above the upper resin member 41, and the two legs 62 penetrate the upper resin member 41 and the lower resin member 42, from the lower surface of the lower resin member 42. Get out.
　自己穿孔型リベット60は高周波電磁誘導加熱により加熱される。自己穿孔型リベット60の脚部62に近接した樹脂部材41,42の界面付近は溶融し、樹脂部材41と42とが融着して、融着部43となっている。
　脚部62の樹脂部材42の下面から出た先端部62cは、ダイのキャビティ（図示せず）により相互に近づくように内側に折り曲げられる。頭部61と折り曲げられた先端部62cとが、樹脂部材41,42を挟んで接合する。
　第３の実施形態では、接合装置1のプリクランプ33内で、自己穿孔型リベット60を支持する部材を用いる。 The self-piercing rivet 60 is heated by high frequency electromagnetic induction heating. The vicinity of the interface between the resin members 41 and 42 close to the leg portion 62 of the self-piercing rivet 60 is melted, and the resin members 41 and 42 are fused to form a fused portion 43.
The front end portion 62c of the leg portion 62 protruding from the lower surface of the resin member 42 is bent inward so as to approach each other by a die cavity (not shown). The head 61 and the bent tip 62c are joined with the resin members 41 and 42 interposed therebetween.
In the third embodiment, a member that supports the self-piercing rivet 60 is used in the pre-clamp 33 of the joining apparatus 1.
（第４の実施形態）
　図１１は、第４の実施形態の自己穿孔型リベット70により樹脂部材41,44を接合した状態を示す断面図である。第４の実施形態は、自己穿孔型リベット70と、ダイのキャビティとの形状が、第１の実施形態とは異なる。第４の実施形態の自己穿孔型リベット70は、釘の形状である。即ち、頭部71と、頭部71から延びる細長い脚部72とを有する。脚部72の外周部には、凹凸72dが付けられている。凹凸72dにより、自己穿孔型リベット70は抜けにくくなる。脚部72の先端部を折り曲げないので、ダイ（図示せず）の上面は平面である。 (Fourth embodiment)
FIG. 11 is a cross-sectional view showing a state in which the resin members 41 and 44 are joined by the self-piercing rivet 70 of the fourth embodiment. The fourth embodiment differs from the first embodiment in the shapes of the self-piercing rivet 70 and the die cavity. The self-piercing rivet 70 of the fourth embodiment has a nail shape. That is, it has a head 71 and elongated leg portions 72 extending from the head 71. The outer periphery of the leg 72 is provided with irregularities 72d. Due to the unevenness 72d, the self-piercing rivet 70 is difficult to come off. Since the tip of the leg 72 is not bent, the upper surface of the die (not shown) is flat.
　自己穿孔型リベット70は、鉄、アルミ、銅などの導電体で出来ていて、高周波電磁誘導加熱により加熱される。自己穿孔型リベット70の脚部72に近接した樹脂部材41,44の界面付近は接合時に溶融し、樹脂部材41と44とが融着して、融着部43となっている。
　樹脂部材41,44の溶融した部分が凹凸72dに固着し、いっそう抜けにくくなる。
　下側の樹脂部材44は、樹脂部材42より厚く、自己穿孔型リベット70の脚部72の先端は、下側の樹脂部材44を貫通せず、内部に留まる。
　第４の実施形態では、接合装置1のプリクランプ33内で、自己穿孔型リベット70が倒れないように支持する部材を用いる。 The self-piercing rivet 70 is made of a conductor such as iron, aluminum, or copper, and is heated by high frequency electromagnetic induction heating. The vicinity of the interface between the resin members 41 and 44 adjacent to the leg portion 72 of the self-piercing rivet 70 is melted at the time of joining, and the resin members 41 and 44 are fused to form a fused portion 43.
The melted portions of the resin members 41 and 44 are fixed to the unevenness 72d and are more difficult to come off.
The lower resin member 44 is thicker than the resin member 42, and the tips of the legs 72 of the self-piercing rivet 70 do not penetrate the lower resin member 44 and remain inside.
In the fourth embodiment, a member that supports the self-piercing rivet 70 from falling down in the pre-clamp 33 of the joining apparatus 1 is used.
　第４の実施形態の自己穿孔型リベットの変形例70'では、脚部72の外周部の凹凸は、螺旋形の溝である。更に、頭部71の上面にねじ回しの先端部を挿入できる溝を形成してある。このようにすると、自己穿孔型リベット70'は、ダイとパンチにより打ち込んだ後、ねじ回しに回して、簡単に取外すことが出来る。 In the modified example 70 ′ of the self-drilling rivet of the fourth embodiment, the irregularities on the outer peripheral part of the leg part 72 are spiral grooves. Furthermore, a groove into which the tip of a screwdriver can be inserted is formed on the upper surface of the head 71. In this way, the self-piercing rivet 70 ′ can be easily removed by driving it with a die and punch and then turning it with a screwdriver.
（第５の実施形態）
　図１２は、第５の実施形態の自己穿孔型リベット80の斜視図である。第５の実施形態は、自己穿孔型リベット80が、第４の実施形態とは異なる。自己穿孔型リベット80は、全体として野球のホームベースの形状の板状の金具である。自己穿孔型リベット80の２つの側部には、凹凸82dが形成されている。自己穿孔型リベット80の下側端部は、細くなり、樹脂部材41,44に挿入しやすくなっている。下側端部は、下側の樹脂部材44を貫通せず、内部に留まる。脚部72の先端部を折り曲げないので、ダイ（図示せず）の上面は平面である。 (Fifth embodiment)
FIG. 12 is a perspective view of a self-piercing rivet 80 of the fifth embodiment. In the fifth embodiment, a self-piercing rivet 80 is different from the fourth embodiment. The self-piercing rivet 80 is a plate-shaped metal fitting in the shape of a baseball base as a whole. Concavities and convexities 82d are formed on two sides of the self-piercing rivet 80. The lower end of the self-piercing rivet 80 is thin and easy to insert into the resin members 41 and 44. The lower end portion does not penetrate the lower resin member 44 and remains inside. Since the tip of the leg 72 is not bent, the upper surface of the die (not shown) is flat.
　自己穿孔型リベット80を高周波電磁誘導加熱する点は、他の実施形態と同様である。
　自己穿孔型リベット80を用いると、樹脂部材41と44とが、相互に回転しないように接合することが出来る。
　第５の実施形態では、接合装置1のプリクランプ33内で、自己穿孔型リベット80を支持する部材を用いる。 The point that the self-piercing rivet 80 is heated by high frequency electromagnetic induction is the same as in the other embodiments.
When the self-piercing rivet 80 is used, the resin members 41 and 44 can be joined so as not to rotate with each other.
In the fifth embodiment, a member that supports the self-piercing rivet 80 is used in the pre-clamp 33 of the joining apparatus 1.
　本発明の実施形態によれば、高周波電磁誘導加熱により、自己穿孔型クリップを加熱し、自己穿孔型リベットを打ち込むとき、加熱された自己穿孔型クリップにより、樹脂部材の一部を加熱して溶融させる。自己穿孔型クリップにより接合すると共に、樹脂部材同士を融着させて接合するので、強い強度で接合することが出来る。樹脂部材が軟化、溶融した状態で自己穿孔型リベットを打ち込むので、樹脂部材に割れが生じない。 According to the embodiment of the present invention, when a self-piercing clip is heated by high-frequency electromagnetic induction heating and a self-piercing rivet is driven, a part of the resin member is heated and melted by the heated self-piercing clip. Let Since it joins by self-piercing type | mold clip and fuse | melts resin members, it can join by strong intensity | strength. Since the self-piercing rivet is driven in a state where the resin member is softened and melted, the resin member is not cracked.
1　接合装置
10　自己穿孔型リベット
11　頭部
12　脚部
20　ダイ
21　キャビティ
22　円錐面
23　側面
25　ダイ支持部材
26　高周波電磁誘導コイル
27　冷却水通路
31　パンチ
32　磁心部材
33　プリクランプ
36　高周波電磁誘導コイル
41　（パンチ側）樹脂部材
42　（受け側）樹脂部材
43　融着部
44　（厚い）樹脂部材
50　自己穿孔型リベット
51　頭部
52a,b,c,d　脚部
55　高周波電源
56　整合部
57　加熱部
58　冷却水循環ユニット
60　自己穿孔型リベット
61　頭部
62　脚部
62c　先端部
70　自己穿孔型リベット
71　頭部
72　脚部
72d　凹凸
80　自己穿孔型リベット
82d　凹凸 1 Joining equipment
10 Self-drilling rivets
11 head
12 legs
20 dies
21 cavity
22 Conical surface
23 Side
25 Die support member
26 high frequency electromagnetic induction coil
27 Cooling water passage
31 punch
32 Magnetic core members
33 Pre-clamp
36 high frequency electromagnetic induction coil
41 (Punch side) Resin member
42 (Receiving side) Resin member
43 Fusion part
44 (thick) resin parts
50 self-piercing rivets
51 head
52a, b, c, d leg
55 High frequency power supply
56 Matching section
57 Heating section
58 Cooling water circulation unit
60 Self-drilling rivets
61 head
62 legs
62c Tip
70 Self-drilling rivets
71 head
72 legs
72d uneven
80 self-piercing rivets
82d uneven

Claims (10)

  1. 　ダイ上に配置された複数の樹脂部材に自己穿孔型リベットを打込んで接合する接合装置であって、
    　前記樹脂部材と、前記樹脂部材上に配置された前記自己穿孔型リベットの脚部を受けるダイと、
    　前記ダイを支持するため、絶縁体で出来たダイ支持部材と、
    　前記ダイ上に前記複数の樹脂部材を固定するため、絶縁体で出来た円筒形のプリクランプと、
    　前記プリクランプの周りに巻き回された高周波電磁誘導コイルと、
    　前記自己穿孔型リベットを前記複数の樹脂部材に打ち込むため、絶縁体で出来たパンチと、を備え、
    　前記自己穿孔型リベットを高周波電磁誘導加熱し、前記複数の樹脂部材の一部を溶融させた状態で前記自己穿孔型リベットを打ち込み、前記複数の樹脂部材を接合することを特徴とする接合装置。     A joining device for driving and joining self-piercing rivets to a plurality of resin members arranged on a die,
    The resin member, and a die that receives the legs of the self-piercing rivet disposed on the resin member;
    A die support member made of an insulator to support the die; and
    In order to fix the plurality of resin members on the die, a cylindrical pre-clamp made of an insulator,
    A high-frequency electromagnetic induction coil wound around the pre-clamp;
    In order to drive the self-piercing rivet into the plurality of resin members, a punch made of an insulator is provided,
    A bonding apparatus characterized in that the self-piercing rivet is heated by high frequency electromagnetic induction, the self-piercing rivet is driven in a state where a part of the plurality of resin members is melted, and the plurality of resin members are bonded.
  2. 　請求項１に記載の接合装置であって、更に、前記ダイ支持部材内に配置された別の高周波電磁誘導コイルを備える接合装置。 The joining apparatus according to claim 1, further comprising another high-frequency electromagnetic induction coil disposed in the die support member.
  3. 　請求項１又は２に記載の接合装置であって、前記高周波電磁誘導コイルで発生した磁界を集中するため、前記パンチと前記自己穿孔型リベットとの間に、円柱形の磁心部材を有する接合装置。 3. The joining apparatus according to claim 1 or 2, further comprising: a cylindrical magnetic core member between the punch and the self-piercing rivet for concentrating a magnetic field generated by the high-frequency electromagnetic induction coil. .
  4. 　請求項３に記載の接合装置であって、前記磁心部材はフェライトで出来ている接合装置。 4. The joining apparatus according to claim 3, wherein the magnetic core member is made of ferrite.
  5. 　請求項１乃至４の何れか１項に記載の接合装置であって、前記ダイは絶縁体で出来ている接合装置。 5. The joining apparatus according to claim 1, wherein the die is made of an insulator.
  6. 　請求項１乃至４の何れか１項に記載の接合装置であって、前記ダイはフェライトで出来ている接合装置。 The joining device according to any one of claims 1 to 4, wherein the die is made of ferrite.
  7. 　請求項１乃至６の何れか１項に記載の接合装置であって、前記ダイ支持部材内に冷却水通路を有する接合装置。 The joining device according to any one of claims 1 to 6, wherein the joining device has a cooling water passage in the die support member.
  8. 　請求項１乃至７の何れか１項に記載の接合装置であって、前記自己穿孔型リベットは、大径の頭部と前記頭部から垂下する中空の脚部とを有する接合装置。 The joining apparatus according to any one of claims 1 to 7, wherein the self-piercing rivet has a large-diameter head and a hollow leg hanging from the head.
  9. 　大径の頭部と前記頭部から垂下する中空の脚部とを有する自己穿孔型リベットを、ダイ上に配置された複数の樹脂部材に打込んだ接合構造であって、複数の前記樹脂部材同士が高周波電磁誘導加熱された自己穿孔型リベットにより軟化又は溶融して融着され、前記自己穿孔型リベットの前記脚部は、上側の前記樹脂部材を貫通し、下側の前記樹脂部材内で拡径して、前記樹脂部材が接合されることを特徴とする接合構造。 A bonding structure in which self-drilling rivets having a large-diameter head and hollow legs hanging from the head are driven into a plurality of resin members arranged on a die, and the plurality of resin members They are softened or melted and fused by self-piercing rivets heated by high frequency electromagnetic induction, and the legs of the self-piercing rivets pass through the upper resin member and in the lower resin member. A joining structure characterized by expanding the diameter and joining the resin member.
  10. 　自己穿孔型リベットを、ダイ上に配置された複数の樹脂部材に打込む接合方法であって、
    　前記ダイ上に複数の樹脂部材を配置し、
    　前記複数の樹脂部材をプリクランプにより上方から押えて固定し、
    　前記プリクランプ内の前記複数の樹脂部材上に、前記自己穿孔型リベットを配置し、
    　高周波電磁誘導コイルに高周波電流を流して、高周波電磁誘導加熱により、前記自己穿孔型リベットを予め加熱し、
    　前記高周波電磁誘導コイルに高周波電流を流しながら、前記自己穿孔型リベットを前記パンチにより前記複数の樹脂部材に打ち込み、
    　前記複数の樹脂部材の前記自己穿孔型リベットに近接する部分を溶融させ、
    　前記高周波電磁誘導コイルに高周波電流を流すのをやめ、溶融した前記複数の樹脂部材の部分を融着させる段階を備え、
    　前記自己穿孔型リベットの打込みと、前記複数の樹脂部材同士の融着とにより、前記複数の樹脂部材を接合することを特徴とする接合方法。     A self-drilling rivet is a joining method for driving a plurality of resin members arranged on a die,
    A plurality of resin members are arranged on the die,
    The plurality of resin members are fixed by pressing from above with a pre-clamp,
    Placing the self-piercing rivets on the plurality of resin members in the pre-clamp;
    A high-frequency current is passed through the high-frequency electromagnetic induction coil, and the self-piercing rivet is preheated by high-frequency electromagnetic induction heating,
    While flowing a high-frequency current through the high-frequency electromagnetic induction coil, the self-piercing rivet is driven into the plurality of resin members by the punch,
    Melting a portion of the plurality of resin members adjacent to the self-piercing rivet;
    Stopping the flow of a high-frequency current to the high-frequency electromagnetic induction coil, and fusing the melted portions of the plurality of resin members,
    A joining method comprising joining the plurality of resin members by driving the self-piercing rivet and fusing the plurality of resin members.
PCT/JP2014/060454 2013-06-03 2014-04-11 Joining device for resin member, joining structure, and joining method WO2014196268A1 (en)

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US10722935B2 (en) 2015-07-01 2020-07-28 Nippon Steel Corporation Mechanical joining apparatus and mechanical joining method
US10603713B2 (en) 2015-07-01 2020-03-31 Nippon Steel Corporation Mechanical joining apparatus and mechanical joining method
JPWO2017002976A1 (en) * 2015-07-01 2018-03-29 新日鐵住金株式会社 Mechanical joining apparatus and mechanical joining method
JPWO2017002975A1 (en) * 2015-07-01 2018-03-22 新日鐵住金株式会社 Mechanical joining apparatus and mechanical joining method
WO2017002976A1 (en) * 2015-07-01 2017-01-05 新日鐵住金株式会社 Mechanical bonding device and mechanical bonding method
WO2017002975A1 (en) * 2015-07-01 2017-01-05 新日鐵住金株式会社 Mechanical bonding device and mechanical bonding method
WO2018163072A1 (en) * 2017-03-09 2018-09-13 Bombardier Inc. Apparatus and methods for installing composite rivets
WO2018177629A1 (en) * 2017-03-28 2018-10-04 Bayerische Motoren Werke Aktiengesellschaft Method for joining at least one plastic component to a metal component without using a pilot hole, composite component, and self-piercing rivet setting tool
WO2019086263A1 (en) * 2017-11-02 2019-05-09 Deutsches Zentrum für Luft- und Raumfahrt e.V. Connection element for fiber composite material components, method for connecting fiber composite material components, device for connecting fiber composite material components, and fiber composite material component assembly
CN112974714A (en) * 2019-12-17 2021-06-18 财团法人金属工业研究发展中心 Method for joining sheet metal parts and for cooling same
WO2022128547A1 (en) * 2020-12-15 2022-06-23 Kok & Van Engelen Composite Structures B.V. Method and device for electromagnetic spot welding of moulded parts
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NL2027111B1 (en) * 2020-12-15 2022-07-08 Kok & Van Engelen Composite Structures B V Method and device for electromagnetic spot welding of moulded parts

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CN105188986A (en) 2015-12-23
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