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JPH11100008A - Temperature control device for sealed heater in impulse sealing device - Google Patents

Temperature control device for sealed heater in impulse sealing device

Info

Publication number
JPH11100008A
JPH11100008A JP27641397A JP27641397A JPH11100008A JP H11100008 A JPH11100008 A JP H11100008A JP 27641397 A JP27641397 A JP 27641397A JP 27641397 A JP27641397 A JP 27641397A JP H11100008 A JPH11100008 A JP H11100008A
Authority
JP
Japan
Prior art keywords
temperature
heater
seal heater
seal
power supply
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP27641397A
Other languages
Japanese (ja)
Inventor
Nobuo Mogi
伸夫 茂木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Max Co Ltd
Original Assignee
Max Co Ltd
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 Max Co Ltd filed Critical Max Co Ltd
Priority to JP27641397A priority Critical patent/JPH11100008A/en
Publication of JPH11100008A publication Critical patent/JPH11100008A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9131—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux
    • B29C66/91311—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating
    • B29C66/91317—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating by measuring the electrical resistance
    • 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
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B29C65/221—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip
    • B29C65/222—Heated wire resistive ribbon, resistive band or resistive strip characterised by the type of heated wire, resistive ribbon, band or strip comprising at least a single heated wire
    • 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
    • B29C65/38—Impulse heating
    • 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
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B29C66/0044—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined using a separating sheet, e.g. fixed on the joining tool
    • 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
    • B29C66/40—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
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B29C66/43121—Closing the ends of tubular or hollow single articles, e.g. closing the ends of bags
    • 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
    • B29C66/8145—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/81457—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 constructional aspects of the pressing elements, e.g. of the welding jaws or clamps comprising a block or layer of deformable material, e.g. sponge, foam, rubber
    • 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
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives
    • 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
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91211—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods
    • B29C66/91212—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws
    • B29C66/91213—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature with special temperature measurement means or methods involving measurement means being part of the welding jaws, e.g. integrated in the welding jaws and measuring the electrical resistance of a resistive element belonging to said welding jaws, said element being, e.g. a thermistor
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9121—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature
    • B29C66/91231—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the temperature of the joining tool
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9131—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux
    • B29C66/91311—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating
    • B29C66/91313—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating by measuring the voltage, i.e. the electric potential difference or electric tension
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/912—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux
    • B29C66/9131—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux
    • B29C66/91311—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating
    • B29C66/91315—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by measuring the temperature, the heat or the thermal flux by measuring the heat or the thermal flux, i.e. the heat flux by measuring the heat generated by Joule heating or induction heating by measuring the current intensity
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91421—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the joining tools
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91441—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time
    • B29C66/91443—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature the temperature being non-constant over time following a temperature-time profile
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91641—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time
    • B29C66/91643—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux the heat or the thermal flux being non-constant over time following a heat-time profile
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91653—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the voltage, i.e. the electric potential difference or electric tension
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9161—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux
    • B29C66/91651—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating
    • B29C66/91655—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the heat or the thermal flux, i.e. the heat flux by controlling or regulating the heat generated by Joule heating or induction heating by controlling or regulating the current intensity
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/919—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges
    • B29C66/9192—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams
    • B29C66/91951—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux characterised by specific temperature, heat or thermal flux values or ranges in explicit relation to another variable, e.g. temperature diagrams in explicit relation to time, e.g. temperature-time diagrams
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/96—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process
    • B29C66/961—Measuring or controlling the joining process characterised by the method for implementing the controlling of the joining process involving a feedback loop mechanism, e.g. comparison with a desired value
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/929—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges
    • B29C66/9292—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools characterized by specific pressure, force, mechanical power or displacement values or ranges in explicit relation to another variable, e.g. pressure diagrams
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/95—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94
    • B29C66/959—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables
    • B29C66/9592—Measuring or controlling the joining process by measuring or controlling specific variables not covered by groups B29C66/91 - B29C66/94 characterised by specific values or ranges of said specific variables in explicit relation to another variable, e.g. X-Y diagrams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Package Closures (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a temperature control device for a sealed heater capable of monitoring the temperature of the sealed heater at all times without using a temperature sensor, carrying out the impulse sealing under optimum temperature conditions, provide the high sealing quality and improve the working efficiency. SOLUTION: A sealed heater is provided with an alternating current power source 21 and a second power source 27 for flowing the very small current connected together in parallel through a triac 20, switches 25 and 26 provided on respective power source circuits and a control section 31. The power application time to the triac 20 is controlled based on the temperature of the sealed heater 7 to control the temperature of the sealed heater 7 at the time of heating the sealed heater 7, while the second power source 27 is connected with the sealed heater 7 and the temperature of the sealed heater 7 is computed at the time of cooling the sealed heater 7.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、インパルスシール
装置におけるシールヒータの温度管理装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature control device for a seal heater in an impulse sealing device.

【０００２】[0002]

【従来の技術】一般に、合成樹脂製シートからなる袋体
等の口を閉じる装置として、袋体の口の部分にシールヒ
ータを押し付け、加熱して溶着するインパルスシール装
置が採用されている。このインパルスシール装置ではシ
ール部の品質の安定化を図るためにはシールヒータの温
度管理が有効であるが、温度センサを使用してシールヒ
ータの温度を測定した場合、温度センサが破損して温度
計測ができなくなることがあり、シールヒータに通電す
る通電時間による温度管理装置や、シールヒータの電気
抵抗を計測して電気抵抗からシールヒータの温度管理を
する装置が提供されている。2. Description of the Related Art In general, as a device for closing a mouth of a bag or the like made of a synthetic resin sheet, an impulse seal device in which a seal heater is pressed against a mouth portion of the bag, heated and welded is adopted. In this impulse sealing device, it is effective to control the temperature of the seal heater in order to stabilize the quality of the seal portion. However, when the temperature of the seal heater is measured using a temperature sensor, the temperature sensor is In some cases, measurement cannot be performed, and a temperature management device based on an energization time for energizing the seal heater, and a device that measures the electric resistance of the seal heater and manages the temperature of the seal heater from the electric resistance are provided.

【０００３】[0003]

【発明が解決しようとする課題】しかしながら、前者の
通電時間による温度管理装置では、ヒータ回りに熱が蓄
積されて温度が徐々に上昇してしまうため、シール品質
が安定しない、温度の上昇を抑えるために強制的に冷却
する冷却装置を必要とする等の品質、コストの面で問題
があり、後者の電気抵抗からヒータの温度を導き出す装
置としては実公昭６２−４５８８２号公報の高速インパ
ルスシール装置があるが、ヒータを加熱する時間と、電
気抵抗を計測する時間とをオーバーラップさせることは
できず、ヒータの加熱に時間がかかる問題があった。However, in the former temperature control device based on the current supply time, heat is accumulated around the heater and the temperature gradually rises, so that the seal quality is not stable and the temperature rise is suppressed. Therefore, there is a problem in terms of quality and cost, such as the necessity of a cooling device for forcibly cooling, and as a device for deriving the temperature of the heater from the latter electric resistance, a high-speed impulse sealing device disclosed in Japanese Utility Model Publication No. 62-45882. However, there is a problem that the time for heating the heater and the time for measuring the electric resistance cannot be overlapped, and it takes time to heat the heater.

【０００４】本発明は上記問題点を解消し、温度センサ
を用いることなく常にシールヒータの温度を監視でき、
最適な温度条件でインパルスシールをおこない高いシー
ル品質と作業効率の向上を図ることができるシールヒー
タの温度管理装置を提供することをその課題とする。[0004] The present invention solves the above problems, and can constantly monitor the temperature of the seal heater without using a temperature sensor.
It is an object of the present invention to provide a temperature control device for a seal heater capable of performing impulse sealing under an optimal temperature condition and improving high seal quality and work efficiency.

【０００５】[0005]

【課題を解決するための手段】前記課題を解決するた
め、本発明に係るインパルスシール装置におけるシール
ヒータの温度管理装置は、合成樹脂製フィルムからなる
袋体をシールヒータに押し付け、該シールヒータを加熱
して袋体の口を溶着密閉するインパルスシール装置にお
けるシールヒータの温度管理装置において、上記シール
ヒータにはトライアックを介して電力を供給し該シール
ヒータを加熱する交流電源と、シールヒータに微小電流
を流す第２の電源とを並列に接続し、少なくとも何れか
一方の電源がシールヒータに接続されないようにそれぞ
れの電源回路には回路を開閉する開閉器を設けるととも
に、シールヒータの電気抵抗を計測する計測手段を設
け、ヒータの加熱時には上記開閉器を制御して交流電源
をシールヒータに接続し、計測した電気抵抗からヒータ
温度を算出し、算出したヒータ温度からトライアックの
通電時間を制御してヒータの温度をコントロールすると
ともに、ヒータの冷却時には上記開閉器を制御して第２
の電源をシールヒータに接続し、シールヒータの電気抵
抗を計測してヒータ温度を算出する制御装置を備えたこ
とを特徴とする。In order to solve the above-mentioned problems, a temperature control device for a seal heater in an impulse sealing device according to the present invention presses a bag made of a synthetic resin film against the seal heater, and presses the seal heater. In a temperature control device of a seal heater in an impulse seal device for heating and sealing a mouth of a bag body by welding, an AC power supply for supplying power to the seal heater through a triac to heat the seal heater, and a minute power supply for the seal heater. A second power supply for supplying current is connected in parallel, and a switch for opening and closing the circuit is provided in each power supply circuit so that at least one of the power supplies is not connected to the seal heater. Provide a measuring means to measure, control the switch when heating the heater and connect the AC power supply to the seal heater Calculates the heater temperature from the electrical resistance measured, calculated with the heater temperature by controlling the triac conduction time to control the temperature of the heater, at the time of cooling of the heater second by controlling the switch
And a controller for calculating the heater temperature by measuring the electric resistance of the seal heater and connecting the power supply to the seal heater.

【０００６】なお、上記シールヒータは電気抵抗の温度
依存性における平均温度係数が２０００×１０-6［Ｋ］
以上であることが好ましい。The above-mentioned seal heater has an average temperature coefficient of 2000 × 10 −6 [K] in the temperature dependence of electric resistance.
It is preferable that it is above.

【０００７】また、上記シールヒータがニッケル線ヒー
タであってもよい。[0007] The seal heater may be a nickel wire heater.

【０００８】さらに、上記第２の電源に代えて、上記交
流電源を降圧して上記シールヒータに供給してもかまわ
ない。Furthermore, instead of the second power supply, the AC power supply may be stepped down and supplied to the seal heater.

【０００９】[0009]

【発明の実施の形態】図１（ａ）（ｂ）は、インパルス
シール装置を示し、このインパルスシール装置はポリプ
ロピレンを二軸延伸成形で袋状に成形し防曇加工された
袋体１の口を溶着して閉じる装置であって、装置本体２
は略方形の枠体状に形成され、装置本体２の下枠部３に
水平に取り付けられたアルミニウム製の基台４の上面に
はテフロン製の絶縁板５と、この絶縁板５の上面にテフ
ロン加工したガラス繊維のシート６とを重合し、このシ
ート６上には長手方向にシールヒータ７が配置されてい
る。1 (a) and 1 (b) show an impulse sealing device. This impulse sealing device is formed by forming polypropylene into a bag by biaxial stretching and opening a bag 1 which is subjected to anti-fog processing. For closing by welding.
Is formed in a substantially rectangular frame shape, and has an insulating plate 5 made of Teflon on an upper surface of an aluminum base 4 horizontally mounted on a lower frame portion 3 of the apparatus main body 2, and an upper surface of the insulating plate 5. A Teflon-coated glass fiber sheet 6 is polymerized, and a seal heater 7 is disposed on the sheet 6 in the longitudinal direction.

【００１０】上記シールヒータ７には温度係数が２００
０×１０-6［Ｋ］以上の電気抵抗の温度依存性の高い電
熱線が用いられ、本発明では温度係数が４５００×１０
-6［Ｋ］のニッケル線が使用されている。ニッケル線は
電熱素材ではないが、袋体を溶着する温度（２００〜４
００℃）には十分耐えられるとともに、ニクロム線に比
較して温度変化に対する電気抵抗の変化が大きく、電気
抵抗を測定することにより温度センサを使用することな
く温度の変化を計測することができるからである。The seal heater 7 has a temperature coefficient of 200.
A heating wire having a high temperature dependence of electric resistance of 0 × 10 −6 [K] or more is used, and in the present invention, the temperature coefficient is 4500 × 10 6
-6 [K] nickel wire is used. Nickel wire is not an electric heating material, but the temperature at which the bag is welded (200 to 4).
(00 ° C.), and has a large change in electrical resistance with respect to temperature change compared to nichrome wires, and by measuring the electrical resistance, the change in temperature can be measured without using a temperature sensor. It is.

【００１１】そして、装置本体２の上枠部１０には２本
のエアシリンダ１１、１１が所定間隔をおいて下向きに
設けられ、このエアシリンダ１１の後端１１ａは支持部
材１２を介して上枠部１０に取り付けられ、ピストンロ
ッド１３の先端には押え部材１４が水平に取り付けられ
ている。この押え部材１４は、アルミニウム等の金属で
角柱状に形成され、両端には下枠部３と上枠部１０との
間に垂直に配置されたガイドシャフト１５、１５に遊嵌
したスライダ１６、１６が固定され、このガイドシャフ
ト１５、１５にガイドされて押え部材１４がピストンロ
ッド１３に連動して上下動できるように構成されてい
る。The upper frame 10 of the apparatus main body 2 is provided with two air cylinders 11, 11 facing downward at a predetermined interval, and the rear end 11a of the air cylinder 11 is The piston rod 13 is attached to the frame 10, and a pressing member 14 is horizontally attached to the tip of the piston rod 13. The holding member 14 is formed of a metal such as aluminum in the shape of a prism, and has sliders 16 loosely fitted on guide shafts 15, 15 disposed at both ends in a vertical direction between the lower frame 3 and the upper frame 10. The holding member 14 is configured to be movable up and down in conjunction with the piston rod 13 by being guided by the guide shafts 15 and 15.

【００１２】上記押え部材１４の下面にはシリコンゴム
の押え板１７と、押え板１７の下面にはテフロン加工し
たガラス繊維のシート１８とを重合し、押え部材１４を
下降させた時に押え板１７の弾性で基台４上にセットさ
れた袋体１の口部１ａをシールヒータ７に確実に押しつ
けることができるように構成されている。なお、シート
６及びシート１８はシールヒータ７で溶かされた袋体１
の一部が絶縁板５や押え板１７に貼り付くのを防止して
いる。A pressing plate 17 made of silicon rubber is formed on the lower surface of the pressing member 14 and a glass fiber sheet 18 processed with Teflon is formed on the lower surface of the pressing plate 17 so that the pressing plate 17 is moved down when the pressing member 14 is lowered. The opening 1a of the bag 1 set on the base 4 can be reliably pressed against the seal heater 7 by the elasticity of the above. The sheet 6 and the sheet 18 are the bag 1 melted by the seal heater 7.
Is prevented from sticking to the insulating plate 5 and the holding plate 17.

【００１３】ところで、上記インパルスシール装置には
シールヒータ７のヒータ温度を管理する温度管理装置が
設けられている。Incidentally, the impulse sealing device is provided with a temperature management device for managing the heater temperature of the seal heater 7.

【００１４】シールヒータ７にはトライアック２０を介
して交流電源２１をトランス２２で４０Ｖに降圧された
交流電圧が供給され、シールヒータ７と交流電源２１と
の間には開閉器である第１のリレー２５の接点ＣＲ１、
ＣＲ２が設けられ、第１のリレー２５が作動して接点Ｃ
Ｒ１、ＣＲ２が閉じた時にはトライアック２０を介して
供給された電力でシールヒータ７が発熱し、接点ＣＲ
１、ＣＲ２が開いた時にはシールヒータ７に対する電力
の供給が遮断されシールヒータ７の温度が下がるように
構成されている。そして、シールヒータ７には第２のリ
レー２６の接点ＣＲ３、ＣＲ４を介して第２の電源であ
るバッテリ（ＤＣ２Ｖ）２７が交流電源２１に並列に接
続されている。なお、リレー２５、２６が作動する時に
は一方のリレーの回路が開放された後に他方のリレーの
回路が閉じるように制御され、接点ＣＲ１、ＣＲ２と接
点ＣＲ３、ＣＲ４とが全て同時に閉じることはなく、第
２の電源回路に交流電源が流れないように制御されてい
る。An AC power source 21 is supplied with an AC voltage stepped down to 40 V by a transformer 22 through a triac 20 via a triac 20, and a first switch as a switch is provided between the seal heater 7 and the AC power source 21. The contact CR1 of the relay 25,
CR2 is provided and the first relay 25 is activated to activate the contact C
When R1 and CR2 are closed, the seal heater 7 generates heat with the electric power supplied through the triac 20, and the contacts CR
1. When the CR2 is opened, the supply of electric power to the seal heater 7 is cut off and the temperature of the seal heater 7 is lowered. A battery (DC2V) 27 as a second power supply is connected in parallel to the AC power supply 21 to the seal heater 7 via the contacts CR3 and CR4 of the second relay 26. When the relays 25 and 26 operate, the circuit of one relay is controlled to be closed after the circuit of the other relay is opened, and the contacts CR1 and CR2 and the contacts CR3 and CR4 are not closed at the same time. The second power supply circuit is controlled so that the AC power supply does not flow.

【００１５】図２は温度管理装置Ａの一例を示し、シー
ルヒータの電気抵抗を計測する抵抗計測手段３０と、電
気抵抗からシールヒータの温度を算出し、算出した温度
に基づいてシールヒータに供給する電力を制御する制御
部３１とから構成されている。FIG. 2 shows an example of the temperature control device A, which includes a resistance measuring means 30 for measuring the electric resistance of the seal heater, a seal heater temperature calculated from the electric resistance, and supply to the seal heater based on the calculated temperature. And a control unit 31 for controlling the power to be applied.

【００１６】抵抗計測手段３０は電流計測部３２と電圧
計測部３３とから構成され、電流計測部３２は電流セン
サ３５の検出した電流をＡ／Ｄコンバータ３６でデジタ
ルデータに変換し、電圧計測部３３は電圧センサ３７で
検出した電圧をＡ／Ｄコンバータ３８でデジタルデータ
に変換し、それぞれ制御部３１に入力している。The resistance measuring means 30 comprises a current measuring section 32 and a voltage measuring section 33. The current measuring section 32 converts the current detected by the current sensor 35 into digital data by an A / D converter 36, Reference numeral 33 converts the voltage detected by the voltage sensor 37 into digital data by an A / D converter 38 and inputs the digital data to the control unit 31.

【００１７】制御部３１は入力された電流値と電圧値と
からシールヒータ７の電気抵抗Ｒを求め、求められた電
気抵抗Ｒから更にシールヒータ７の温度Ｔを算出し、算
出した温度Ｔに基づいてトライアック２０の導通時間を
制御するトリガパルス制御部４０、シールヒータ７に交
流電源を接続する開閉器（第１のリレー）２５及びシー
ルヒータ７に第２の電源２７を接続する開閉器（第２の
リレー）２６を制御するように構成されている。The controller 31 calculates the electric resistance R of the seal heater 7 from the input current value and voltage value, and further calculates the temperature T of the seal heater 7 from the obtained electric resistance R. A trigger pulse control unit 40 that controls the conduction time of the triac 20 based on a switch (a first relay) 25 that connects an AC power supply to the seal heater 7 and a switch that connects a second power supply 27 to the seal heater 7 ( The second relay 26 is controlled.

【００１８】なお、リレーは２つのリレーを使用するこ
となく１つのリレーでもかまわない。ＣＲ１、ＣＲ２に
ブレーク接点、ＣＲ３、ＣＲ４にメーク接点を使用し、
リレーがＯＦＦ時には接点ＣＲ１、ＣＲ２が閉じＣＲ
３、ＣＲ４が開き、リレーがＯＮ時には接点ＣＲ１、Ｃ
Ｒ２が開きＣＲ３、ＣＲ４が閉じるように接続すればよ
い。但し、すべての接点が同時に閉じないように、アー
リーブレークメーク（ＥＢＭ）構造のリレーを使用すれ
ばよい。The relay may be a single relay without using two relays. Use break contacts for CR1 and CR2 and make contacts for CR3 and CR4.
When the relay is OFF, the contacts CR1 and CR2 are closed and CR
3. When CR4 opens and the relay is ON, contacts CR1, C
What is necessary is just to connect so that R2 opens and CR3 and CR4 close. However, an early break make (EBM) structure relay may be used so that all the contacts are not closed at the same time.

【００１９】制御部３１は、マイクロプロセッサで構成
すればよく、あらかじめメモリ４１に記憶されている制
御プログラムに基づいて、電流計測部３２で計測したシ
ールヒータ７を流れる電流Ｉと、電圧計測部３３で計測
したシールヒータ７の端子電圧Ｅとから、計算式（１）
に基づいて電気抵抗Ｒを求め、 Ｒ＝Ｅ／Ｉ ・・・・・・・・・・・・・・・・・・・・・・（１） 求められた電気抵抗Ｒから電気抵抗の温度依存性を表す
計算式（２）に基づいて、シールヒータの温度Ｔを求め
るように構成されている。 Ｒ＝Ｒ0 ｛１＋α（Ｔ−Ｔ0）｝・・・・・・・・・・・・・（２） Ｒ ：温度ｔにおける電気抵抗値 Ｒ0 ：基準温度Ｔ0における電気抵抗値 α ：平均温度係数 なお、平均温度係数αの一例を下記に示す。 ニクロム線２種： １６０×１０-6［Ｋ-1］ アルメル線 ：２２００×１０-6［Ｋ-1］ ニッケル線 ：４５００×１０-6［Ｋ-1］ 算出された温度Ｔに基づいて、制御部３１はリレー２
５、２６及びトリガパルス制御部４０を制御する。The control section 31 may be constituted by a microprocessor. The current I flowing through the seal heater 7 measured by the current measurement section 32 and the voltage measurement section 33 are measured based on a control program stored in the memory 41 in advance. From the terminal voltage E of the seal heater 7 measured in step (1)
R = E / I (1) From the obtained electric resistance R, the temperature of the electric resistance is obtained. The configuration is such that the temperature T of the seal heater is obtained based on the calculation formula (2) representing the dependence. R = R 0 {1 + α (T−T 0 )} (2) R: electric resistance at temperature t R 0 : electric resistance at reference temperature T 0 α: Average temperature coefficient An example of the average temperature coefficient α is shown below. Two types of nichrome wires: 160 × 10 -6 [K -1 ] Alumel wire: 2200 × 10 -6 [K -1 ] Nickel wire: 4500 × 10 -6 [K -1 ] Based on the calculated temperature T, The control unit 31 is a relay 2
5, 26 and the trigger pulse control unit 40 are controlled.

【００２０】制御部３１はエアシリンダ１１が作動し
て、押え部材１４が下動し、図示しないスイッチで押え
部材１４が基台４に押し付けられたことが検出された
時、トリガパルス制御部４０にトリガパルスの発振を制
御させてソフトスタートさせる。このソフトスタートは
図３に示すように、トリガパルスの位相を交流波形に対
してａ１、ａ２、ａ３と徐々に変え、電圧の平均電力を
徐々に大きくして、ヒータ回路に瞬時に大電流が流れな
いようにするもので、特に電気抵抗が温度依存性の高い
線材に関しては温度が低い時には電気抵抗が小さいため
大きな電流が流れてしまうのでこのソフトスタートを欠
くことはできない。When the air cylinder 11 is operated, the holding member 14 is moved down, and the pressing member 14 is pressed against the base 4 by a switch (not shown), the trigger pulse control unit 40 Control the oscillation of the trigger pulse to soft start. In this soft start, as shown in FIG. 3, the phase of the trigger pulse is gradually changed to a1, a2, and a3 with respect to the AC waveform, the average power of the voltage is gradually increased, and a large current is instantaneously supplied to the heater circuit. In order to prevent the current from flowing, especially in the case of a wire having a high temperature-dependent electric resistance, when the temperature is low, a large current flows because the electric resistance is small.

【００２１】なお、図６における時間ｔ1 はソフトスタ
ートの時間を示している。The time t1 in FIG. 6 indicates a soft start time.

【００２２】上記構成の温度管理装置によれば、制御部
３１は先ずリレー２５を作動させ接点ＣＲ１、ＣＲ２を
閉じ、トライアック２０のゲートパルスを制御してシー
ルヒータ７に交流を供給し、シールヒータ７を発熱させ
ながらヒータ温度を計測する（図４参照）。このシール
ヒータの温度は電流計測部３２で計測したシールヒータ
７を流れる電流と、電圧計測部３３で計測したシールヒ
ータ７の端子電圧とから、シールヒータ７の電気抵抗を
求め、求めた電気抵抗からシールヒータ７の温度を求め
る。According to the temperature management device having the above-described structure, the control unit 31 first activates the relay 25 to close the contacts CR1 and CR2, controls the gate pulse of the triac 20, supplies AC to the seal heater 7, and The heater temperature is measured while heating 7 (see FIG. 4). The temperature of the seal heater is obtained by calculating the electric resistance of the seal heater 7 from the current flowing through the seal heater 7 measured by the current measuring unit 32 and the terminal voltage of the seal heater 7 measured by the voltage measuring unit 33. , The temperature of the seal heater 7 is obtained.

【００２３】図４に示すように、シールヒータ７の温度
が目標温度（シールに最適な温度）Ｔ0を越えた時は、
図５に示すように、トリガパルスの周期と位相を変えて
電圧の平均実効値を加熱時（ＯＮ状態）の１／４の１０
ボルトにする。電圧が１／４になるということはシール
ヒータに供給される電力は１／１６になるので、電力は
供給されて電気抵抗を計測することはできるが温度が上
昇しないＯＦＦ状態にすることができる。温度が下降す
るようであればトリガパルスを制御してＯＮ状態にして
温度を上げ、約１秒間温度平衡状態を維持する。この温
度平衡状態がフィルムの溶着温度であって、１秒の溶着
時間を経過すると制御部３１は第１のリレー２５を作動
させて接点ＣＲ１、ＣＲ２を開き、シールヒータ７への
電力供給を遮断する。シールヒータ７への電力供給を止
めるとヒータは自然冷却が始まる。As shown in FIG. 4, when the temperature of the seal heater 7 exceeds a target temperature (optimal temperature for sealing) T 0 ,
As shown in FIG. 5, by changing the period and phase of the trigger pulse, the average effective value of the voltage is changed to 10 times of 1/4 of the heating time (ON state).
Bolt. When the voltage is reduced to 1/4, the power supplied to the seal heater is reduced to 1/16. Therefore, the power is supplied and the electric resistance can be measured, but the OFF state where the temperature does not rise can be set. . If the temperature decreases, the trigger pulse is controlled to be turned on to increase the temperature and maintain the temperature equilibrium state for about 1 second. This temperature equilibrium state is the welding temperature of the film, and when the welding time of 1 second elapses, the control unit 31 operates the first relay 25 to open the contacts CR1 and CR2 and cut off the power supply to the seal heater 7. I do. When the power supply to the seal heater 7 is stopped, the heater starts cooling naturally.

【００２４】接点ＣＲ１、ＣＲ２を開いてから所定時間
経過後、第２のリレー２６を作動させて接点ＣＲ３、Ｃ
Ｒ４を閉じてシールヒータ７にバッテリ２７を接続す
る。After a predetermined time has passed since the contacts CR1 and CR2 were opened, the second relay 26 was operated to activate the contacts CR3 and C2.
R4 is closed, and the battery 27 is connected to the seal heater 7.

【００２５】電流計測部３２と電圧計測部３３とはバッ
テリ２７から供給された電力で、シールヒータ７の電流
と電圧とを計測し、計測した結果を制御部３１に入力す
る。制御部３１は入力された電流と電圧とからシールヒ
ータ７の電気抵抗を算出し、算出した電気抵抗からシー
ルヒータ７の温度を算出する。The current measuring unit 32 and the voltage measuring unit 33 measure the current and the voltage of the seal heater 7 with the electric power supplied from the battery 27, and input the measurement result to the control unit 31. The controller 31 calculates the electric resistance of the seal heater 7 from the input current and voltage, and calculates the temperature of the seal heater 7 from the calculated electric resistance.

【００２６】算出した温度を監視し、袋体の溶着部が安
定する温度までシールヒータ７の温度が下がったと判断
した時に、エアシリンダ１１の押し付け解除信号を出力
する。この解除信号に基づいてエアシリンダ１１はピス
トンロッド１３を上昇させ、押え部材１４による袋体１
のシールヒータ７への押し付けを解除する。The calculated temperature is monitored, and when it is determined that the temperature of the seal heater 7 has decreased to a temperature at which the welded portion of the bag is stabilized, a signal for releasing the pressing of the air cylinder 11 is output. The air cylinder 11 raises the piston rod 13 based on this release signal, and the bag 1
Of the seal heater 7 is released.

【００２７】上述のように、電気抵抗の温度依存性の高
いシールヒータを使用することにより、シールヒータの
電気抵抗を計測することによりシールヒータの温度をよ
り正確に把握することができる。そして、シールヒータ
への電力の供給を遮断した後も、小容量の第２の電源を
シールヒータに接続することにより、シールヒータの温
度を継続して監視することができシールヒータの温度が
下がって溶着部が安定したところで押し付け部材の押し
付け解除ができるので、タイマー等で溶着後一定時間経
過した時に押し付け解除するものと異なり、使用環境温
度や装置自体の蓄熱により溶着部が不安定な状態で押し
付けを解除することがなくなり安定したシール品質を確
保することができる。また、温度が十分下がっているの
に一定時間待つこともなくなり、作動効率を高めること
ができる。As described above, the temperature of the seal heater can be more accurately grasped by measuring the electric resistance of the seal heater by using the seal heater having high temperature dependence of the electric resistance. Then, even after the supply of power to the seal heater is cut off, by connecting the small-capacity second power supply to the seal heater, the temperature of the seal heater can be continuously monitored, and the temperature of the seal heater decreases. When the welding part is stable, the pressing part can be released when the pressing member is released.Unlike the one that releases the pressing when a certain time has elapsed after welding with a timer, etc., the welding part is unstable due to the use environment temperature and the heat storage of the device itself. The pressing is not released, and stable sealing quality can be secured. In addition, there is no need to wait for a certain period of time even when the temperature is sufficiently lowered, so that the operation efficiency can be improved.

【００２８】なお、図６は、目標温度を２８０℃に設定
し１秒間保持した場合の電圧、電流及び電力の実効値
と、シールヒータの抵抗値及び温度を示すものであり、
時間ｔ1 はソフトスタート、ｔ2 （右上りグラフ）はＯ
Ｎ状態、ｔ3 （右下がりグラフ）はＯＦＦ状態、ｔ4 は
接点ＣＲ３、ＣＲ４が閉じてバッテリから電力が供給さ
れている状態をそれぞれ示す。FIG. 6 shows the effective values of the voltage, current and electric power and the resistance value and temperature of the seal heater when the target temperature is set at 280 ° C. and held for one second.
Time t1 is soft start, t2 (upper right graph) is O
The N state, t3 (lower right graph) indicates an OFF state, and t4 indicates a state where the contacts CR3 and CR4 are closed and power is supplied from the battery.

【００２９】また、図７に示すように、第２の電源にバ
ッテリを使用することなく、トランス４２の２次側から
シールヒータ７の加熱用の電力と、バッテリの電圧に近
い電圧に降圧した抵抗計測用の電力を取り出し、リレー
２５、２６で切り替えてシールヒータ７に電力供給を行
うようにしてもかまわない。As shown in FIG. 7, the voltage for heating the seal heater 7 and the voltage close to the voltage of the battery are reduced from the secondary side of the transformer 42 without using a battery as the second power supply. The electric power for resistance measurement may be taken out and switched by the relays 25 and 26 to supply electric power to the seal heater 7.

【００３０】[0030]

【発明の効果】請求項１の発明によれば、シールヒータ
の加熱時はもちろん、冷却時にも電力を供給し、シール
ヒータに流れる電流とシールヒータの端子電圧とから電
気抵抗を求め、求めた電気抵抗からシールヒータの温度
を常に把握することができ、温度センサを使用すること
なく最適な温度でフィルムの溶着、シールヒータからの
解放をすることができ、良好なシール品質を確保するこ
とができるとともに、生産性に優れたインパルスシール
を実現することができる。According to the first aspect of the present invention, electric power is supplied not only when the seal heater is heated but also when it is cooled, and the electric resistance is obtained from the current flowing through the seal heater and the terminal voltage of the seal heater. The temperature of the seal heater can always be grasped from the electrical resistance, and the film can be welded and released from the seal heater at the optimum temperature without using a temperature sensor, ensuring good seal quality. In addition, it is possible to realize an impulse seal excellent in productivity.

【００３１】請求項２の発明によれば、温度センサを用
いることなく正確な温度管理を行うことができ、温度セ
ンサの破損等によるトラブルを回避することができる。According to the second aspect of the present invention, accurate temperature management can be performed without using a temperature sensor, and troubles such as damage to the temperature sensor can be avoided.

【００３２】請求項３の発明によれば、シールヒータに
ニッケル線を用いることにより正確なシールヒータの温
度管理を行うことができる。According to the third aspect of the present invention, accurate temperature control of the seal heater can be performed by using a nickel wire for the seal heater.

【００３３】請求項４の考案によれば、別電源を用意す
ることなくシールヒータの温度管理を行うことができ
る。According to the present invention, the temperature of the seal heater can be controlled without preparing a separate power supply.

【図面の簡単な説明】[Brief description of the drawings]

【図１】（ａ）（ｂ）はインパルスシール装置の正面図
及び要部縦断面図1 (a) and 1 (b) are a front view and a longitudinal sectional view of a main part of an impulse sealing device.

【図２】温度管理装置の構成を示すブロック図FIG. 2 is a block diagram showing a configuration of a temperature management device.

【図３】ソフトスタートを説明するトリガパルスと交流
電源とのタイムチャート図FIG. 3 is a time chart of a trigger pulse for explaining soft start and an AC power supply.

【図４】開閉器の作動状態とシールヒータの温度変化と
の関係を示すタイムチャート図FIG. 4 is a time chart illustrating a relationship between an operation state of a switch and a temperature change of a seal heater.

【図５】ＯＦＦ状態を説明するトリガパルスと交流電源
とのタイムチャート図FIG. 5 is a time chart of a trigger pulse for explaining an OFF state and an AC power supply.

【図６】設定温度を２８０℃に設定し、１秒間保持した
場合の電圧、電流、電力の実効値及びシールヒータの電
気抵抗と温度とを示す計測データ図FIG. 6 is a measurement data diagram showing the effective values of voltage, current, and power, and the electrical resistance and temperature of the seal heater when the set temperature is set to 280 ° C. and held for one second.

【図７】温度管理装置の他の例を示すブロック図FIG. 7 is a block diagram showing another example of the temperature management device.

【符号の説明】[Explanation of symbols]

１ 袋体 ２ 装置本体 ７ シールヒータ ２０ トライアック ２１ 交流電源 ２５ 第１のリレー（開閉器） ２６ 第２のリレー（開閉器） ２７ バッテリ（第２の電源） ３０ 抵抗計測手段 ３１ 制御部 ３２ 電流計測部 ３３ 電圧計測部 ４０ トリガパルス制御部 Ａ 温度管理装置 REFERENCE SIGNS LIST 1 bag body 2 device main body 7 seal heater 20 triac 21 AC power supply 25 first relay (switch) 26 second relay (switch) 27 battery (second power supply) 30 resistance measurement means 31 control unit 32 current measurement Unit 33 voltage measurement unit 40 trigger pulse control unit A temperature management device

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】 合成樹脂製フィルムからなる袋体の口を
溶着密閉するインパルスシール装置におけるシールヒー
タの温度管理装置であって、 上記シールヒータにはトライアックを介して電力を供給
し該シールヒータを加熱させる交流電源と、シールヒー
タに微小電流を流す第２の電源とを並列に接続し、少な
くとも何れか一方の電源がシールヒータに接続されない
ようにそれぞれの電源回路には回路を開閉する開閉器を
設けるとともに、交流電源又は第２の電源を接続した時
のシールヒータの電気抵抗を計測する抵抗計測手段を設
け、シールヒータの加熱時には上記開閉器を制御して交
流電源をシールヒータに接続するとともに、シールヒー
タの電気抵抗からヒータ温度を求め、求めたヒータ温度
に基づいて上記トライアックの通電時間を制御してシー
ルヒータの温度をコントロールし、シールヒータの冷却
時には上記開閉器を制御して第２の電源をシールヒータ
に接続し、シールヒータの電気抵抗からヒータ温度を算
出することを特徴とするインパルスシール装置における
シールヒータの温度管理装置。1. A temperature control device for a seal heater in an impulse seal device for welding and sealing a mouth of a bag made of a synthetic resin film, wherein electric power is supplied to the seal heater via a triac to control the seal heater. An AC power supply to be heated and a second power supply for supplying a minute current to the seal heater are connected in parallel, and each power supply circuit has a switch for opening and closing the circuit so that at least one of the power supplies is not connected to the seal heater. And a resistance measuring means for measuring the electric resistance of the seal heater when an AC power supply or a second power supply is connected. When the seal heater is heated, the switch is controlled to connect the AC power supply to the seal heater. At the same time, the heater temperature is obtained from the electric resistance of the seal heater, and the energizing time of the above triac is controlled based on the obtained heater temperature. Controlling the temperature of the seal heater, controlling the switch when the seal heater is cooled, connecting the second power supply to the seal heater, and calculating the heater temperature from the electric resistance of the seal heater. A temperature control device for the seal heater in the sealing device. 【請求項２】 前記シールヒータは電気抵抗の温度依存
性における平均温度係数が２０００×１０-6［Ｋ］以上
である請求項１記載のインパルスシール装置におけるシ
ールヒータの温度管理装置2. An apparatus for controlling the temperature of a seal heater in an impulse sealing apparatus according to claim 1, wherein said seal heater has an average temperature coefficient of 2000 × 10 −6 [K] or more in temperature dependency of electric resistance. 【請求項３】 前記シールヒータがニッケル線ヒータで
ある請求項１記載のインパルスシール装置におけるシー
ルヒータの温度管理装置。3. The temperature control device for a seal heater in an impulse sealing device according to claim 1, wherein said seal heater is a nickel wire heater. 【請求項４】 前記第２の電源に代えて、前記交流電源
を降圧して前記シールヒータに供給する請求項１記載の
インパルスシール装置におけるシールヒータの温度管理
装置。4. The temperature control device for a seal heater in an impulse seal device according to claim 1, wherein the AC power supply is stepped down and supplied to the seal heater instead of the second power supply.
JP27641397A 1997-09-24 1997-09-24 Temperature control device for sealed heater in impulse sealing device Pending JPH11100008A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27641397A JPH11100008A (en) 1997-09-24 1997-09-24 Temperature control device for sealed heater in impulse sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27641397A JPH11100008A (en) 1997-09-24 1997-09-24 Temperature control device for sealed heater in impulse sealing device

Publications (1)

Publication Number Publication Date
JPH11100008A true JPH11100008A (en) 1999-04-13

Family

ID=17569069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27641397A Pending JPH11100008A (en) 1997-09-24 1997-09-24 Temperature control device for sealed heater in impulse sealing device

Country Status (1)

Country Link
JP (1) JPH11100008A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6735926B1 (en) * 1998-04-03 2004-05-18 Kent A. Louviere Method of making a plurality of interconnected vials
US8623167B2 (en) 2011-06-29 2014-01-07 Samsung Display Co., Ltd. Substrate sealing apparatus and method of sealing substrate using the same
JP2015100976A (en) * 2013-11-25 2015-06-04 日産自動車株式会社 Seal component production device and method
JP5837972B1 (en) * 2014-10-03 2015-12-24 富士インパルス株式会社 Electric heating device
JP2017136179A (en) * 2016-02-03 2017-08-10 日本セイフティー株式会社 Toilet device and film sealing device
JP2019218214A (en) * 2018-06-16 2019-12-26 上海拓牛智能科技有限公司Ｓｈａｎｇｈａｉ Ｔｏｗｎｅｗ Ｉｎｔｅｌｌｉｇｅｎｔ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． Heat welding device, smart dust bin and heat welding temperature control method

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6735926B1 (en) * 1998-04-03 2004-05-18 Kent A. Louviere Method of making a plurality of interconnected vials
US7007445B2 (en) * 1998-04-03 2006-03-07 Louviere Kent A Method of making a plurality of interconnected vials
US8623167B2 (en) 2011-06-29 2014-01-07 Samsung Display Co., Ltd. Substrate sealing apparatus and method of sealing substrate using the same
JP2015100976A (en) * 2013-11-25 2015-06-04 日産自動車株式会社 Seal component production device and method
JP5837972B1 (en) * 2014-10-03 2015-12-24 富士インパルス株式会社 Electric heating device
WO2016051830A1 (en) * 2014-10-03 2016-04-07 富士インパルス株式会社 Electric heating device
US11173671B2 (en) 2014-10-03 2021-11-16 Fuji Impulse Co., Ltd Electric heating device
JP2017136179A (en) * 2016-02-03 2017-08-10 日本セイフティー株式会社 Toilet device and film sealing device
JP2019218214A (en) * 2018-06-16 2019-12-26 上海拓牛智能科技有限公司Ｓｈａｎｇｈａｉ Ｔｏｗｎｅｗ Ｉｎｔｅｌｌｉｇｅｎｔ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． Heat welding device, smart dust bin and heat welding temperature control method
EP3587082A1 (en) * 2018-06-16 2020-01-01 Shanghai Townew Intelligent Technology Co., Ltd. Heat fusing devices, smart trash receptacle and methods for controlling heat fusing temperature

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