CN112893154B - Screw straightness accuracy detection mechanism and screw automation detection equipment - Google Patents
Screw straightness accuracy detection mechanism and screw automation detection equipment Download PDFInfo
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- CN112893154B CN112893154B CN201911228142.2A CN201911228142A CN112893154B CN 112893154 B CN112893154 B CN 112893154B CN 201911228142 A CN201911228142 A CN 201911228142A CN 112893154 B CN112893154 B CN 112893154B
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- 238000001514 detection method Methods 0.000 title claims abstract description 119
- 230000006835 compression Effects 0.000 claims abstract description 26
- 238000007906 compression Methods 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 26
- 238000007599 discharging Methods 0.000 claims description 15
- 238000003860 storage Methods 0.000 claims description 15
- 210000004907 gland Anatomy 0.000 claims description 12
- 230000002950 deficient Effects 0.000 claims description 10
- 238000007689 inspection Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 9
- 208000014735 Tooth injury Diseases 0.000 claims description 8
- 230000006378 damage Effects 0.000 claims description 8
- 208000027418 Wounds and injury Diseases 0.000 claims description 7
- 208000014674 injury Diseases 0.000 claims description 7
- 208000010727 head pressing Diseases 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 238000005286 illumination Methods 0.000 description 6
- 238000012790 confirmation Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 208000033985 Device component issue Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/10—Sorting according to size measured by light-responsive means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/361—Processing or control devices therefor, e.g. escort memory
- B07C5/362—Separating or distributor mechanisms
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Feeding Of Articles To Conveyors (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a screw straightness detection mechanism and screw automatic detection equipment. Screw straightness accuracy detection mechanism includes: the finger cylinder clamp is fixed on the clamp mounting lower plate, and the clamp mounting lower plate is connected with the clamp mounting upper plate through a connecting track and is driven by the cylinder to move back and forth relative to the clamp mounting upper plate; the clip mounting upper plate is driven to move up and down by a driving mechanism; the compression shaft penetrates through the spring and is installed on the compression shaft connecting plate through a linear bearing, and the compression shaft connecting plate is fixed above the detection position through a compression shaft installing plate; the upper end of the compression shaft penetrates through the compression shaft connecting plate, a contact plate and a locking gasket are arranged at the upper end part of the compression shaft, and a contact sensor is arranged on the contact plate; the straightness detection tool is connected to a track of a jacking track plate through a sliding block, and is aligned with the central axis of the compression shaft; the sliding block is in driving connection with the checking fixture, and the checking fixture is driven to linearly slide up and down through the checking fixture.
Description
Technical Field
The invention relates to the field of machinery, in particular to a screw straightness detection mechanism and screw automatic detection equipment with the screw straightness detection mechanism.
Background
The delivery of the screw requires various precision standard detection. At present, detection of screws is carried out manually by using special tools. In particular, the edge-by-edge measurement is performed by a standard ruler during the detection of the straightness of the screw. Such manual measurements can have some unavoidable deviations due to subjective awareness of the inspector or operating specifications, inaccurate and inefficient detection. In the face of mass products, manual spot inspection is currently adopted to finish detection. The sampling inspection mode cannot ensure that the quality of all products reaches the standard, the working efficiency is low, and the accuracy is low.
Disclosure of Invention
Because the prior art has the technical defects, the application provides a screw straightness detection mechanism, and aims to solve the problems of low working efficiency and low accuracy of a detection mode in the prior art.
The application discloses a screw straightness detection mechanism, which comprises:
The finger cylinder clamp is fixed on a clamp mounting lower plate, and the clamp mounting lower plate is connected with the clamp mounting upper plate through a connecting track and drives the clamp mounting lower plate to move back and forth relative to the clamp mounting upper plate along the connecting track through a cylinder; the clip mounting upper plate is driven to move up and down by a driving mechanism;
The compression shaft penetrates through the spring and is installed on the compression shaft connecting plate through a linear bearing, and the compression shaft connecting plate is fixed above the detection position through a compression shaft installing plate; the upper end of the compression shaft penetrates through the compression shaft connecting plate, a contact plate and a locking gasket are arranged at the upper end of the compression shaft, and a contact sensor is arranged on the contact plate;
the straightness detection tool is connected to a track of a jacking track plate through a sliding block, and is aligned with the central axis of the compression shaft; the sliding block is in driving connection with the checking fixture, and the straightness checking fixture is driven to slide up and down in a straight line through the checking fixture.
Preferably, the straightness gauge is combined with the slider through a hoop, the slider is connected with the gauge drive through a magnetic piece, and the magnetic piece comprises:
the connecting end of the magnet-built-in magnet box penetrates through the opening of the jacking track plate to be in driving connection with the gauge positioned on the back surface of the jacking track plate, and the magnet box main body is positioned on the front surface of the jacking track plate;
the magnet plate is positioned at the bottom of the sliding block, and one end part of the magnet plate extends out and is adsorbed at the bottom of the magnet box main body;
The magnet plate is driven by the magnet box to pull the sliding block to move up and down along with the detection tool; once the resistance of the straightness detection tool is larger than the attraction force of the magnet, the magnet plate is separated from the magnet suction box, and the sliding block loses the thrust of the magnet plate and falls back to the original position.
Preferably, the driving mechanism comprises a stepping motor and a screw rod connected with the stepping motor, the stepping screw rod is connected with the clip mounting upper plate, and the stepping motor drives the clip mounting upper plate to move by driving the stepping screw rod.
Preferably, the gauge drive comprises a servo motor, a bearing seat, a servo screw rod and a lifting plate, wherein the servo motor is fixed at the bottom of the lifting track plate through a mounting plate, the bearing seat is fixed at the back of the lifting track plate, the servo screw rod is connected to the servo motor, the lifting plate is connected to the servo screw rod, and the lifting plate is combined to the track at the back of the lifting track plate.
By adopting the technical means, the screw straightness detection mechanism can realize accurate measurement, avoid subjective errors of manual measurement and improve detection efficiency.
The application also discloses automatic screw detection equipment, which comprises a feeding station, a detection station, a discharging station and a control system, wherein the feeding station is used for rapidly feeding; the detection station is used for finishing data detection of the screw; the blanking station is used for sorting and orderly arranging the screws; the control system is used for receiving, analyzing and controlling the operation of equipment on each station; the detection station is provided with:
The screw receiving rotary table is provided with tooth position grooves along the outer edge of the screw receiving rotary table and is driven to rotate by a power mechanism, and the screw receiving rotary table receives the feeding station and the discharging station;
the screw height or/and diameter detector is arranged beside the screw receiving turntable and is used for detecting the height or/and diameter of the screw in the tooth position groove corresponding to the detection position;
The screw straightness detection mechanism is arranged beside the screw receiving turntable and is used for detecting the straightness of the screw in the tooth position groove corresponding to the detection position;
The tooth injury detector is arranged beside the screw receiving turntable and is used for detecting whether teeth of the screw on the detection position corresponding to the tooth position groove are damaged or not;
The screw height or/and diameter detector, the screw straightness detection mechanism and the tooth injury detector transmit detection data to the control system, and the control system judges whether the detected screw is qualified or not and records the position of the screw according to the comparison of the detection data and a standard value
Preferably, the screw height or/and diameter detector comprises:
the screw head first pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of the screw in the tooth position groove corresponding to the screw head first pressing mechanism detection position;
The screw height or/and diameter image detection mechanism is positioned behind the screw head pressing machine and is used for shooting the screw of which the head is pressed by the screw head first pressing mechanism, obtaining the height or/and diameter value and transmitting the value to the control system.
Preferably, the dental injury detector comprises a screw head second pressing mechanism and a dental injury image detection mechanism, wherein:
The screw head second pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of the screw in the tooth position groove corresponding to the detection position of the screw head second pressing mechanism;
tooth injury image detection mechanism includes:
The fixed seat is arranged and fixed below the screw receiving turntable, and a circular positioning disc is arranged on the fixed seat; the camera is fixed on the circular positioning plate through the connecting support, and is aligned with the tooth parts of the screw compressed by the screw head second compressing mechanism, acquires images of the tooth parts and transmits the images to the control system.
Preferably, the blanking station includes:
The blanking device is arranged beside the screw receiving turntable and comprises a good product blanking mechanism and a defective product blanking mechanism;
The direct vibration type discharging track mechanism comprises an inclined guide rail and a direct vibration type flat conveyor connected with the inclined guide rail, wherein the direct vibration type flat conveyor drives the screw to slide to the bottom of the inclined guide rail along the inclined guide rail;
The box arranging mechanism is fixed on a bottom plate and positioned at the bottom of the inclined guide rail, and the screw sliding to the bottom of the inclined guide rail is clamped by the box arranging mechanism and conveyed into the corresponding storage box;
The movable storage mechanism, it is fixed in the swing mechanism stroke, the movable storage mechanism includes:
A bottom frame, the upper end surface of which is provided with a track surface;
The tray is connected to the track on the track surface through a sliding block, and is driven to move through a driving mechanism;
and a storage box placed on the tray.
Preferably, a screw protection disc is arranged at the side of the screw receiving turntable, and the inner side edge of the screw protection disc is consistent with the outer side edge radian of the screw receiving turntable.
Preferably, the feeding station comprises a feeder and a direct vibration type feeding rail; the direct vibration type feeding track comprises:
The upper end of the feeding guide rail is connected with the feeder, and the lower end of the feeding guide rail is in butt joint with the screw receiving turntable of the detection station; the feeding guide rail is provided with a gland, and a gap is kept between the gland and the upper surface of the feeding guide rail, and the gap is determined by the fact that the upper end part of a single screw can pass through;
the material protection mechanism is arranged at the lower end of the feeding guide rail and is used for preventing the screw from clamping the screw material receiving turntable; the material protection mechanism comprises:
The material protection drive is fixed on one side of the feeding guide rail through a bracket;
The material protection push plate is connected to the material protection drive, is arranged between the feeding guide rail and the gland, and covers or lets out of the guide groove of the feeding guide rail under the drive of the material protection drive so as to prevent or release the screw in the guide groove;
and the direct vibration machine is connected below the feeding guide rail and drives the feeding guide rail to vibrate and transmit the screw to move in the guide groove.
In addition, the automatic screw detection equipment can realize automatic detection of screws, and detection items comprise multiple items such as screw height, diameter, straightness, tooth injury, head and the like, so that the detection efficiency and accuracy of the screws are improved, and the requirement of mass production can be met.
Drawings
FIG. 1 is a schematic view of the overall structure of an automated screw inspection apparatus according to the present application;
FIG. 2 is a schematic illustration of the interior of the embodiment of FIG. 1 in accordance with the present application;
FIG. 3 is a schematic view of the structure of the direct vibration type feeding rail of the feeding station of the present application;
FIG. 4 is a schematic diagram of a screw straightness detection mechanism according to the present application;
FIG. 5 is a schematic diagram of a screw straightness detection mechanism according to a second embodiment of the present application;
FIG. 6 is an exploded view of the screw straightness detection mechanism of the present application;
FIG. 7 is a schematic view of a camera of the dental injury image detection mechanism of the present application;
FIG. 8 is a schematic view of a part of the structure of the screw-equipped protective plate of the present application;
FIG. 9 is a direct-vibration discharge rail of the present application;
fig. 10A and 10B are schematic structural views of a swing mechanism according to the present application;
Fig. 11 is a schematic structural view of a mobile storage mechanism according to the present application.
Detailed Description
The technical scheme of the invention is further specifically described below through examples and with reference to the accompanying drawings.
Referring to fig. 1 and 2, fig. 1 is a schematic view of an overall structure of an automatic screw detection device according to the present application, and fig. 2 is an internal schematic view of fig. 1 according to the present application. The automatic screw detection equipment comprises a feeding station A, a detection station B, a discharging station C and a control system (PLC). The feeding station A is used for rapidly feeding; the detection station B is used for finishing data detection of the screw D; the blanking station C is used for sorting and orderly arranging the screws; the control system PLC is used for receiving, analyzing and controlling the operation of equipment on each station. The feeding station A and the detection station B are covered in the sound insulation cover 1, so that noise in an operation room is reduced. As shown in fig. 2, the feeding station a and the detecting station B are disposed above the cabinet 2, and each power device and the like are disposed inside the cabinet 2.
As shown in fig. 2, the feeding station a of the present application includes a vibration plate feeder 3 and a direct vibration type feeding rail 4. The upper end of the direct vibration type feeding track 4 is connected with the vibration disc feeder 3, and screws transmitted by the vibration disc feeder 3 are conveyed to the lower end of the direct vibration type feeding track 4.
Referring to fig. 3, the direct vibration type feeding rail 4 includes a feeding rail 41, a gland 42, a material protection mechanism 43, and a direct vibration machine 44. The feed rail 41 is set up obliquely so that the screw D in the guide groove of the feed rail 41 can slide down under the influence of gravity. The upper end of the feeding guide rail 41 is connected with the vibration disc feeder 3, and the lower end of the feeding guide rail 41 is abutted against the screw receiving turntable 5 of the detection station B. The feeding guide rail 41 is provided with a gland 42, and the gland 42 maintains a gap with the upper surface of the feeding guide rail 41, wherein the gap is based on that the upper end part of a single screw can pass, so that the screw can be ensured to be arranged in the guide groove of the feeding guide rail 41 in an orderly manner. To achieve the turning design of the gland 42, a stub shaft 45 is connected to the bottom of the gland 42 via a connecting shaft, avoiding high cost manufacture of the gland 42. The material protection mechanism 43 is arranged at the lower end of the feeding guide rail 41, and the material protection mechanism 43 is used for preventing the screw D from clamping the screw receiving turntable 5. As shown in fig. 3, the material protecting mechanism 43 includes a material protecting driver 431 and a material protecting push plate 432. The guard drive 431 of the present application is a cylinder structure that is fixed to one side of the feed rail 41 by a bracket. A guard push plate 432 is connected to the guard drive 431. The material protecting pushing plate 432 is disposed between the feeding guide rail 41 and the pressing cover 42. The material protecting push plate 432 is driven by the material protecting drive 431 to cover or let out of the guide groove of the feeding guide rail 41 so as to prevent or release the screw D in the guide groove. The direct vibration machine 44 is connected below the feeding guide rail 41, and drives the feeding guide rail 41 to vibrate and transmit the screw D to move in the guide groove. The direct vibration type feeding rail 4 combines the mode of tilting and vibration, the vibration can feed, the tilting can also feed, the two are combined together to ensure smooth transmission in the feeding process, the tilting rail is overlapped with screws to have a downward pressure, the front material can be pushed to be in place rapidly, the feeding is faster, and the automatic detection speed is improved.
Optical fiber sensors 46 are arranged on two sides close to the lower end part of the feeding guide rail 41, and the optical fiber sensors 46 are used for detecting whether the screw exists in the guide groove of the feeding guide rail 41 and sending a feeding confirmation message to the control system PLC. The control system PLC controls the working states of the vibration disc feeder 3 and the direct vibration machine of the direct vibration type feeding track 4 according to the feeding confirmation information.
As shown in fig. 2, the lower end of the feeding rail 41 is abutted against the screw receiving turntable 5. A feeding sensor is arranged at the lower end of the butt joint part of the lower end part of the feeding guide rail 41 and the screw receiving turntable 5, and the feeding sensor is used for detecting whether the screw D exists in the tooth position groove of the butt joint feeding of the screw receiving turntable 5 and generating a feeding confirmation message to the control system PCL. The control system PCL controls the work of the direct vibration type feeding track 4 and the screw receiving turntable 5 according to the feeding confirmation information.
Referring to fig. 2, a screw receiving turntable 5, a screw height and diameter detector 6, a screw straightness detection mechanism 7 and a bite detector 8 are disposed at the detection station B, so as to detect the screw D comprehensively.
As shown in fig. 2, the screw receiving turntable 5 is fixed at the middle position of the detecting station B, and all detecting devices are disposed along the outer edge thereof. As shown in fig. 2 and 8, a plurality of tooth grooves 51 are formed on the outer edge of the screw receiving turntable 5, and the tooth grooves 51 are used for receiving screws D. The screw receiving turntable 5 is driven to rotate by a power mechanism at the bottom, and the power mechanism is also controlled by a control system PLC. Referring to fig. 8, in order to prevent the screw D from falling off due to centrifugal force during the rotation of the screw receiving turntable 5, a screw protection disc 9 is specially provided, and the inner edge of the screw protection disc 9 is in radian consistency with the outer edge of the screw receiving turntable 5.
Referring to fig. 2, a screw height and diameter detector 6 is provided at a first detection position of the screw receiving turntable 5. The screw height and diameter detector 6 includes a screw head first hold-down mechanism 61, a screw height image detection mechanism 62, and a screw diameter image detection mechanism 63.
The first screw head pressing mechanism 61 is arranged beside the screw receiving turntable 5. The first screw head pressing mechanism 61 is used for pressing the head of the screw in the tooth position groove corresponding to the detection position of the first screw head pressing mechanism 61, so that the accuracy of subsequent detection is ensured.
The screw height image detection mechanism 62 and the screw diameter image detection mechanism 63 are respectively arranged behind the screw head first pressing mechanism 61 and are used for shooting the screw with the head pressed by the screw head first pressing mechanism 61, acquiring the height and diameter values of the screw and transmitting the values to the control system.
Referring to fig. 2, the present application further provides a screw straightness detection mechanism 7 for detecting the straightness of the screw at the detection position corresponding to the tooth position groove. The screw straightness detection mechanism 7 is arranged beside the screw receiving turntable 5 and is positioned at the next station of the screw height image detection mechanism 62 and the screw diameter image detection mechanism 63.
The detailed structure of the screw straightness detection mechanism 7 is described as follows:
referring to fig. 4-6, finger cylinder clip 71 is secured to a clip mounting lower plate 72. The clip installation lower plate 72 is connected with the clip installation upper plate 73 through a connecting rail 74 and drives the clip installation lower plate 72 to move back and forth along the connecting rail 74 relative to the clip installation upper plate 73 through a cylinder 75. The clip mounting upper plate 73 is driven to move up and down by a driving mechanism. The driving mechanism comprises a stepping motor 76 and a screw rod 77 connected with the stepping motor 76, the stepping screw rod 77 is connected with the clip mounting upper plate 73, and the stepping motor 76 drives the clip mounting upper plate 73 to move up and down by driving the stepping screw rod 77.
As shown in fig. 4, the hold-down shaft 78 is mounted to the hold-down shaft connection plate 711 by a linear bearing 710 after passing through the spring 79. The hold-down shaft connection plate 711 is secured above the inspection location by a hold-down shaft mounting plate 712. The upper end of the pressing shaft 78 passes through the pressing shaft connecting plate 711, a contact plate 713 and a locking washer 714 are mounted on the upper end of the pressing shaft 78, and a contact sensor is arranged on the contact plate 713. The contact sensor senses the locking state of the locking washer and sends the locking confirmation information to the control system PLC.
As shown in fig. 4 to 6, the straightness checking fixture 703 is coupled to the slider 715 through the anchor ear 704. The slider 715 is attached to a rail 7161 that lifts the rail plate 716. The straightness gauge 703 is aligned with the central axis of the compression shaft 78. The slider 715 is in driving connection with the gauge, and drives the straightness gauge 703 to slide up and down in a straight line through the gauge.
Referring to fig. 6, the slider 715 is connected to the gauge driving device through a magnetic member, and the magnetic member includes: a magnet case 717 and a magnet plate 718 in which a magnet 716 is provided. The suction box connecting end 7171 passes through the opening 7161 of the lifting rail plate 716 to be in driving connection with the gauge positioned on the back surface of the lifting rail plate 716, and the suction box main body 7172 is positioned on the front surface of the lifting rail plate 716. The magnet plate 718 is located at the bottom of the slider 715, and one end of the magnet plate 718 protrudes out to be attracted to the bottom of the magnet box body 7172. In this embodiment, the magnet plates 718 are used together in three. The magnet plate 718 is driven by the magnet box 717 to push the slider 715 to move up and down along with the driving of the gauge. Once the force of the straightness gauge 703 is greater than the force of attraction of the magnet, the magnet plate 718 is separated from the magnet box 717, and the slider 715 loses the pushing force of the magnet plate 718 and falls back to the start position. The magnetic piece can effectively protect the straightness detection tool 703 in a clamping state.
As shown in fig. 5 and 6, the gauge drive includes a servo motor 719, a bearing block 720, a servo screw 721 and a lifting plate 722. The servo motor 719 is fixed to the bottom of the lifting track plate 716 through a servo motor mounting plate 723, the bearing block 720 is fixed to the back surface of the lifting track plate 716, the servo screw 721 is connected to the servo motor 719, the lifting plate 722 is connected to the servo screw 721, and the lifting plate 722 is combined to the track on the back surface of the lifting track plate 716.
The working principle of the screw straightness detection mechanism 7 is as follows:
When the screw is driven by the screw receiving turntable 5 to rotate to the detection station of the screw straightness detection mechanism 7, the stepping motor 76 rotates to drive the stepping screw rod 77 to move downwards. The stepper screw 77 drives the hold down shaft mounting plate 712 to move downwardly together. The compression shaft 78 then moves downward. When the hold down shaft 78 contacts the head of the screw D, the spring D is compressed, the lock washer 714 is lifted, the hold down shaft mounting plate 712 is lowered to the set position, and the stepper motor 76 stops moving. The air cylinder 75 drives the clip mounting lower plate 72 to move forward, and the finger air cylinder clip 42 clamps the screw D, preventing the screw D from tilting during the subsequent testing process, and affecting the accuracy. The rotation of the servo motor 719 drives the lifting plate 722 to move upward. The magnet case 717 attracts the magnet plate 718 and moves upward along with the elevation plate 722. The magnet plate 718 pushes the slider 715 to drive the anchor ear 704 and the straightness gauge 703 to move upwards. When the head of the screw D starts to enter the straightness checking fixture 703, a sensor arranged at the finger cylinder clamp 71 senses and sends a signal to the finger cylinder clamp 71, the finger cylinder clamp 71 is loosened, and the cylinder 75 pushes the clamp mounting lower plate 72 back to the original position. The straightness detection tool 703 continues to rise, and when it reaches the set determination position (detection position set in advance), the servo motor 719 stops moving. At this time, if the straightness of the screw D is qualified, the screw can be fully inserted into the straightness gauge 703; if the screw D is failed, a section of screw D is exposed to the outside, the pressing shaft 78 is lifted up by the screw D, and the head of the failed screw D is higher than the head of the failed screw D. The stepper motor 76 is reversed, the hold-down shaft 78 is slowly raised, at this time, the head of the screw D is short (qualified screw D) is first separated, the contact sensor of the contact plate 713 and the locking pad 714 senses a separation signal at the moment of separation, and sends the separation signal to the control system PLC, and the control system PLC obtains the height dimension of the head of the screw according to the time sequence of the separation signal and the pulse operation of the stepper motor 76, and if the height dimension exceeds the standard height, the screw is defective. And the control system PLC records the judging result and controls the subsequent blanking stations to carry out classified blanking.
Referring to fig. 2, the next detecting process of the screw straightness detecting mechanism 7 is the bite detector 8. The tooth injury detector 8 is arranged beside the screw receiving turntable 5 and is used for detecting whether teeth of screws on detection positions corresponding to the tooth position grooves are damaged or not. The dental injury detector 8 comprises a screw head second pressing mechanism 81 and a dental injury image detection mechanism 82.
Referring to fig. 2, the screw head second pressing mechanism 81 includes a fixing frame and a telescopic pressing shaft. The fixing frame is arranged above the outer edge of the screw receiving turntable and is opposite to the gear groove. The telescopic pressing shaft is fixed on the fixing frame and driven by the motor to move up and down, and the telescopic pressing shaft faces the screw in the gear groove. The screw head second pressing mechanism 81 is mainly used for pressing the head of the gear groove on the detection position, and measurement accuracy is improved.
Referring to fig. 2 and 7, the dental injury image detection mechanism 82 includes a fixed base 821, a circular positioning plate 822, and a camera 823. The fixed seat 821 is disposed and fixed below the screw receiving turntable 5, and a circular positioning plate 822 is disposed on the fixed seat 821. Four connecting brackets 824 are uniformly distributed on the circular positioning plate 822, and a camera 823 is fixed on each connecting bracket 824 through a sliding rail 825. Each camera 823 aligns with the tooth part of the screw compressed by the screw head second compressing mechanism 81, acquires an image of the tooth part and transmits the image to the control system.
Referring to fig. 2, the inspection station of the present application further includes a screw head image sensor 10 for detecting the slot or diameter of the head of the screw D. The screw head image detector 10 includes an adjusting upright 101, an annular illumination portion 103, a detection camera 102, and the like. The bottom of the adjusting vertical rod 101 is movably connected beside the screw receiving turntable 5. The annular illumination part 103 is connected to the adjusting upright rod 101 and is located right above the gear groove, and the annular illumination part generates illumination. The detection camera 102 is fixed on the top end of the adjusting upright rod 101, and is right opposite to the annular illumination part 103 and right above the gear groove and used for shooting head images of the screw to be detected reflected in the annular ring of the annular illumination part. The detection camera 102 transmits the acquired head image to the control system PLC.
Fig. 2 and fig. 8 to 10 are taken together to illustrate the blanking station C of the present application. The blanking station C comprises a blanking device 11, a direct vibration type discharging track mechanism 12, a box arranging mechanism 13 and a movable storage mechanism 14.
As shown in fig. 8, the blanking device 11 is combined with the protection disc 9. The blanking device 11 includes a good blanking mechanism 111 and a defective blanking mechanism 112.
The defective product discharging mechanism 112 includes a discharging driving mechanism and a pulling member 1121. . The pulling part 1121 is arranged on the upper part of the protection disc 9 through a bolt, and a defective product blanking opening is arranged at the corresponding part of the protection disc 9. Along with the rotation of the screw receiving turntable 5, the end part of the poking part 1121 is bent to enable the defective screw D in the tooth position groove to drop to the defective product discharging opening from the tooth position groove, and a receiving box is arranged below the defective product discharging opening.
The good product blanking mechanism 111 includes a blanking cylinder 1111, a material ejecting rod 1112 and a material pushing mechanism. The pushing mechanism is located at the blanking opening of the good product and located below the screw receiving turntable 5. The function of the ejector rod 1112 is that when a defective product is encountered, the ejector rod 1112 is closed, and the screw can smoothly turn to the defective product discharging mechanism 112, so that the screw cannot fall off; when a good product is encountered, the ejector pins 1112 are opened and the screw is pushed into the discharge rail by a pushing mechanism. The blanking cylinder 1111 is controlled by the control system. The upper end of the direct vibration type discharging track mechanism 12 is abutted under the good product blanking mechanism 111. The direct vibration type discharging track mechanism 12 comprises an inclined guide rail 121 and a direct vibration type flat conveyor 122 connected with the inclined guide rail 121. The screw D falls into the inclined guide rail 121, and the direct vibration type flat conveyor 122 drives the screw D to slide along the inclined guide rail 121 to the bottom of the inclined guide rail. The box arranging mechanism 13 is located at the bottom of the inclined guide rail 121, and the screw D sliding to the bottom of the inclined guide rail 121 is clamped and conveyed into the corresponding movable storage mechanism by the arranging mechanism 13. As shown in fig. 10A and 10B, the swing mechanism 13 grips the screws D by the air cylinder grips 131, and after turning over, sequentially places the screws D in the movable stock mechanism 14.
The movable storage mechanism 14 is fixed in the swing mechanism stroke, and the movable storage mechanism 14 includes: a bottom frame 141, a tray 142, and a magazine 143. The upper end surface of the bottom frame 141 is provided with a rail 1411, and the lower part of the bottom frame 141 is used for placing a driving mechanism. The tray 142 is connected to the track 1411 through a slider, and the tray 142 is driven to move by a driving mechanism. A magazine 143 is placed on the tray 142. The screws placed in the storage box 143 through the swing mechanism 13 are tidy, so that the storage box can be directly packaged and shipped without manual work and arrangement.
The automatic screw detection equipment can realize automatic detection of screws, and detection items comprise multiple items such as screw height, diameter, straightness, tooth damage, head and the like, so that the detection efficiency and accuracy of the screws are improved, and the requirement of mass production can be met.
The above-described embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. Equivalent changes and modifications of the invention will occur to those skilled in the art, and it is intended to cover the scope of the appended claims.
Claims (9)
1. The utility model provides a screw straightness accuracy detection mechanism which characterized in that includes:
The finger cylinder clamp is fixed on a clamp installation lower plate, and the clamp installation lower plate is connected with a clamp installation upper plate through a connecting track and drives the clamp installation lower plate to move back and forth relative to the clamp installation upper plate along the connecting track through a cylinder; the clip mounting upper plate is driven to move up and down by a driving mechanism;
The compression shaft penetrates through the spring and is installed on the compression shaft connecting plate through a linear bearing, and the compression shaft connecting plate is fixed above the detection position through a compression shaft installing plate; the upper end of the compression shaft penetrates through the compression shaft connecting plate, a contact plate and a locking gasket are arranged at the upper end of the compression shaft, and a contact sensor is arranged on the contact plate;
The straightness detection tool is connected to a track of a jacking track plate through a sliding block, and is aligned with the central axis of the compression shaft; the sliding block is in driving connection with the gauge, and the straightness gauge is driven to slide up and down in a straight line through the gauge; the straightness detection tool is combined on the sliding block through the anchor ear, the sliding block is connected to the detection tool through a magnetic piece, and the magnetic piece comprises:
the connecting end of the magnet-built-in magnet box penetrates through the opening of the jacking track plate to be in driving connection with the gauge positioned on the back surface of the jacking track plate, and the magnet box main body is positioned on the front surface of the jacking track plate;
the magnet plate is positioned at the bottom of the sliding block, and one end part of the magnet plate extends out and is adsorbed at the bottom of the magnet box main body;
The magnet plate is driven by the magnet box to pull the sliding block to move up and down along with the detection tool; once the resistance of the straightness detection tool is larger than the attraction force of the magnet, the magnet plate is separated from the magnet suction box, and the sliding block loses the tension of the magnet plate and falls back to the initial position.
2. The screw straightness detection mechanism according to claim 1, wherein the driving mechanism comprises a stepping motor and a screw rod connected with the stepping motor, the screw rod is connected with the clip mounting upper plate, and the stepping motor drives the clip mounting upper plate to move by driving the screw rod.
3. The screw straightness detection mechanism according to claim 1, wherein the gauge drive comprises a servo motor, a bearing seat, a servo screw rod and a lifting plate, the servo motor is fixed at the bottom of the lifting track plate through a mounting plate, the bearing seat is fixed at the back of the lifting track plate, the servo screw rod is connected to the servo motor, the lifting plate is connected to the servo screw rod, and the lifting plate is combined to a track at the back of the lifting track plate.
4. The automatic screw detection equipment comprises a feeding station, a detection station, a discharging station and a control system, wherein the feeding station is used for rapidly feeding; the detection station is used for finishing data detection of the screw; the blanking station is used for sorting and orderly arranging the screws; the control system is used for receiving, analyzing and controlling the operation of equipment on each station; the device is characterized in that the detection station is provided with:
The screw receiving rotary table is provided with tooth position grooves along the outer edge of the screw receiving rotary table and is driven to rotate by a power mechanism, and the screw receiving rotary table receives the feeding station and the discharging station;
the screw height or/and diameter detector is arranged beside the screw receiving turntable and is used for detecting the height or/and diameter of the screw in the tooth position groove corresponding to the detection position;
the screw straightness detection mechanism according to any one of claims 1to 3, which is arranged beside the screw receiving turntable and is used for detecting the straightness of the screw in the tooth position groove corresponding to the detection position;
The tooth injury detector is arranged beside the screw receiving turntable and is used for detecting whether teeth of the screw on the detection position corresponding to the tooth position groove are damaged or not;
the screw height or/and diameter detector, the screw straightness detection mechanism and the tooth injury detector transmit detection data to the control system, and the control system judges whether the detected screw is qualified or not and records the position of the screw according to comparison of the detection data and a standard value.
5. The automated screw inspection apparatus of claim 4, wherein the screw height or/and diameter detector comprises:
the screw head first pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of the screw in the tooth position groove corresponding to the screw head first pressing mechanism detection position;
The screw height or/and diameter image detection mechanism is positioned behind the screw head pressing machine and is used for shooting the screw of which the head is pressed by the screw head first pressing mechanism, obtaining the height or/and diameter value and transmitting the value to the control system.
6. The automated screw detection device of claim 4, wherein the dental injury detector comprises:
The screw head second pressing mechanism is arranged beside the screw receiving turntable and is used for pressing the head of the screw in the tooth position groove corresponding to the detection position of the screw head second pressing mechanism;
tooth injury image detection mechanism includes:
The fixed seat is arranged and fixed below the screw receiving turntable, and a circular positioning disc is arranged on the fixed seat;
The camera is fixed on the circular positioning plate through the connecting support, and is aligned with the tooth parts of the screw compressed by the screw head second compressing mechanism, acquires images of the tooth parts and transmits the images to the control system.
7. The automated screw inspection apparatus of claim 4, wherein the blanking station comprises:
The blanking device is arranged beside the screw receiving turntable and comprises a good product blanking mechanism and a defective product blanking mechanism;
The direct vibration type discharging track mechanism comprises an inclined guide rail and a direct vibration type flat conveyor connected with the inclined guide rail, wherein the direct vibration type flat conveyor drives the screw to slide to the bottom of the inclined guide rail along the inclined guide rail;
the box arranging mechanism is fixed on a bottom plate and positioned at the bottom of the inclined guide rail, and clamps and conveys the screws sliding to the bottom of the inclined guide rail into the corresponding movable storage mechanism;
The movable storage mechanism is fixed in the pendulum box mechanism stroke, the movable storage mechanism includes:
A bottom frame, the upper end surface of which is provided with a track surface;
The tray is connected to the track on the track surface through a sliding block, and is driven to move through a driving mechanism;
and the storage box is arranged on the tray and is used for arranging the screws.
8. The automated screw inspection device of claim 4, wherein a screw guard disk is provided alongside the screw receiving turntable, and wherein an inner edge of the screw guard disk is in arc conformity with an outer edge of the screw receiving turntable.
9. The automated screw inspection apparatus of claim 4, wherein the loading station comprises a feeder and a direct-vibration feed rail; the direct vibration type feeding track comprises:
The upper end of the feeding guide rail is connected with the feeder, and the lower end of the feeding guide rail is in butt joint with the screw receiving turntable of the detection station; the feeding guide rail is provided with a gland, and a gap is kept between the gland and the upper surface of the feeding guide rail, and the gap is determined by the fact that the upper end part of a single screw can pass through;
the material protection mechanism is arranged at the lower end of the feeding guide rail and is used for preventing the screw from clamping the screw material receiving turntable; the material protection mechanism comprises:
The material protection drive is fixed on one side of the feeding guide rail through a bracket;
The material protection push plate is connected to the material protection drive, is arranged between the feeding guide rail and the gland, and covers or lets out of the guide groove of the feeding guide rail under the drive of the material protection drive so as to prevent or release the screw in the guide groove;
and the direct vibration machine is connected below the feeding guide rail and drives the feeding guide rail to vibrate and transmit the screw to move in the guide groove.
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| CN201911228142.2A CN112893154B (en) | 2019-12-04 | 2019-12-04 | Screw straightness accuracy detection mechanism and screw automation detection equipment |
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| CN115106307B (en) * | 2022-07-18 | 2024-02-13 | 深圳市良机自动化设备有限公司 | Multi-surface detection and separation equipment for semiconductor components |
| CN115415190B (en) * | 2022-09-14 | 2023-11-17 | 欧拜欧(昆山)汽车紧固件有限公司 | Automatic screw alignment detection mechanism |
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