CN112660760B - Automatic clamping plate device and positioning and clamping method thereof - Google Patents
Automatic clamping plate device and positioning and clamping method thereof Download PDFInfo
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- CN112660760B CN112660760B CN202011599440.5A CN202011599440A CN112660760B CN 112660760 B CN112660760 B CN 112660760B CN 202011599440 A CN202011599440 A CN 202011599440A CN 112660760 B CN112660760 B CN 112660760B
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Abstract
The invention relates to an automatic clamping device and a positioning and clamping method thereof, wherein the device comprises a bottom plate, a movable track component, a fixed track component, a width adjusting mechanism and a control component, wherein the movable track component and the fixed track component are provided with a PCB (printed circuit board) jacking and clamping mechanism and a PCB positioning mechanism, and a PCB sensing mechanism is also arranged between the movable track component and the fixed track component; the fixed track assembly and the movable track assembly are arranged on the bottom plate, the fixed track assembly and the width adjusting mechanism are fixedly arranged on the bottom plate, the movable track assembly is movably arranged on a width adjusting lead screw of the width adjusting mechanism, and the movable track assembly is transversely moved relative to the bottom plate under the action of the width adjusting mechanism and is used for adjusting the distance between the two track assemblies. The automatic clamping plate device is matched with the positioning and clamping method, so that various PCBs with different width sizes can be processed efficiently, stably and accurately, and the product quality of the PCBs is improved.
Description
Technical Field
The invention relates to the field of PCB processing, in particular to an automatic clamping device and a positioning and clamping method of the automatic clamping device.
Background
The PCB, i.e. the printed circuit board, also called as printed circuit board, short for printed board, is an important electronic component, is the support body of electronic components, and has important processing quality and efficiency. Most of the existing schemes for automatically clamping the substrate are mechanisms for controlling the clamping piece to ascend through a cylinder and directly push the clamping piece upwards, the structures have no buffer function, the substrate is easy to damage under certain conditions, and meanwhile, the equipment is easy to generate dust during working, so that the processing of a PCB (printed circuit board) is influenced, and the product quality is influenced;
in addition, most of the existing width adjusting mechanisms are adjusted through a structure that a linear sliding rail is matched with a lead screw, the structure can achieve the width adjusting effect, but parts are large in number, the maintenance cost is high, a horn mouth is easily generated in the movement between the rail and the track, the adjusting precision is influenced, and the working efficiency and the product quality are influenced.
Disclosure of Invention
The purpose of the invention is: the invention provides an automatic clamping device for solving the problems that a PCB clamping has no buffer structure and is easy to damage a substrate and the parts of a width adjusting mechanism are various, and the invention also aims to provide a positioning and clamping method of the automatic clamping device, which can improve the production efficiency and the product quality.
The technical solution of the invention is as follows: an automatic clamping plate device is characterized by comprising a bottom plate, a movable track assembly, a fixed track assembly, a width adjusting mechanism and a control assembly, wherein the width adjusting mechanism and the control assembly are connected with the movable track assembly and the fixed track assembly through a width adjusting lead screw;
the fixed track assembly and the movable track assembly are arranged on the bottom plate in parallel and symmetrically, the fixed track assembly and the width adjusting mechanism are fixedly arranged on the bottom plate, the movable track assembly is movably arranged on a width adjusting lead screw of the width adjusting mechanism, and the movable track assembly transversely moves relative to the bottom plate under the action of the width adjusting mechanism to adjust the distance between the two track assemblies so as to adapt to PCBs with different widths.
Preferably, the method comprises the following steps: the movable track assembly comprises a first track side plate, a belt conveying structure fixedly arranged on the inner side of the first track side plate, a track cover plate fixed on the upper surface of the first track side plate, a PCB lifting and clamping mechanism and a PCB positioning mechanism, wherein the track cover plate is provided with a notch for accommodating a positioning piece of the PCB positioning mechanism;
the fixed track assembly comprises a structure the same as that of the movable track assembly, and the fixed track assembly further comprises a fixed seat used for fixing the second track side plate on the bottom plate.
Preferably, the method comprises the following steps: the belt transmission structure includes step motor, action wheel, a plurality of follow driving wheel, conveyer, belt support piece, step motor sets firmly and passes the track curb plate in the track curb plate outside and output shaft and be connected with the action wheel, the action wheel all sets firmly in the track curb plate inboard with a plurality of follow driving wheels, the action wheel passes through conveyer transmission in proper order with a plurality of drive wheels and is connected, belt support piece sets firmly in the inboard just suit of track curb plate at the conveyer for support conveyer.
Preferably, the method comprises the following steps: the PCB jacking and clamping mechanism comprises a first air cylinder, a driven block, a spring shaft, a reset spring, a translation assembly and a jacking and clamping assembly, wherein the first air cylinder is installed on the outer side of a track side plate through an air cylinder fixing seat, the driven block is fixed at the end part of a piston rod of the first air cylinder, the spring shaft is fixed on the outer side of the track side plate through a spring shaft fixing seat, two ends of the reset spring are fixedly arranged on the driven block and the spring shaft fixing seat respectively and sleeved on the spring shaft, and the driven block penetrates through the track side plate to be connected with the translation assembly;
the translation assembly comprises a translation guide rail horizontally and fixedly arranged in a first groove in the inner side of the rail side plate, and a translation sliding plate movably arranged on the translation guide rail through a translation sliding block, one side surface of the translation sliding plate is connected with the driven block, and two sides of the other side surface of the translation sliding plate are respectively provided with a shaft lever in a protruding manner;
jacking centre gripping subassembly includes sets firmly the lifting guide at the inboard second recess of track curb plate perpendicularly, through the jacking grip block movable mounting on lifting guide, the waist type slotted hole that the slope set for the angle is worn to be equipped with respectively with axostylus axostyle corresponding position in jacking grip block both sides, PCB board jacking fixture is still including fixing the centre gripping piece on the track apron, jacking grip block and centre gripping piece cooperation realize the centre gripping to the PCB board.
Preferably, the method comprises the following steps: PCB board locating component includes second cylinder, jacking piece, pin joint piece, setting element, guide piece, the second cylinder sets firmly in the track curb plate outside through the cylinder mounting panel, jacking piece sets firmly piston rod end portion and transversal personally submit "concave" font at the second cylinder, the pin joint piece is put into in the jacking piece recess and through the pivot pin joint, the pin joint piece other end and setting element pin joint, the guide piece sets firmly in the track curb plate outside and middle formation guide way, the setting element is along the guide way downwardly rotating under the effect of second cylinder, gets into the opening of track apron just, blocks the location to the PCB board.
Preferably, the method comprises the following steps: the PCB induction mechanism comprises a feeding inductor, a discharging inductor, a first positioning inductor and a second positioning inductor, wherein the feeding inductor is arranged at the feeding end of the device and used for inducing feeding of a PCB, the discharging inductor is arranged at the discharging end of the device and used for inducing discharging of the PCB, and the first positioning inductor and the second positioning inductor are located between the fixed track assembly and the movable track assembly and used for inducing the PCB to reach a clamping station.
Preferably, the method comprises the following steps: the width adjusting mechanism comprises a width adjusting motor fixedly arranged on the bottom plate through a motor support, a width adjusting driving wheel fixedly arranged on the other side of the motor support and connected with an output shaft of the width adjusting motor, width adjusting lead screws respectively arranged on the feeding side and the discharging side of the device, a plurality of width adjusting driven wheels respectively fixedly arranged on the end parts of the width adjusting lead screws and the motor support, and a width adjusting transmission belt for driving and connecting the width adjusting driving wheel and the plurality of width adjusting driven wheels, wherein one end of each width adjusting lead screw is fixedly arranged on the bottom plate through a lead screw support, the other end of each width adjusting lead screw sequentially penetrates through the movable track assembly and the fixed track assembly and then is fixed on the second track side plate through a lead screw fixing seat, and the end part of one width adjusting lead screw is also provided with a width adjusting handle for finely adjusting the width;
the contact part of the width-adjusting screw rod and the first track side plate and the second track side plate is also sleeved with a buffer glue;
the width adjusting mechanism further comprises a width adjusting limiting assembly, the width adjusting limiting assembly comprises limiting blocks fixedly arranged on the bottom surfaces of the first track side plates and limiting switches arranged on the two sides of the first track side plates in a dividing mode and fixedly arranged on the bottom plate, and the limiting switches are used for limiting the transverse moving limiting positions of the movable track assembly.
Preferably, the method comprises the following steps: the control assembly is a PLC controller, the feeding inductor, the discharging inductor, the first positioning inductor, the second positioning inductor and the limit switch are in control connection with the PLC controller, and the PLC controller is in control connection with the stepping motor, the width adjusting motor, the first air cylinder and the second air cylinder.
The other technical solution of the invention is as follows: a positioning and clamping method of an automatic clamping plate device is characterized by comprising the following steps:
the PLC controls a width adjusting motor to start, drives a width adjusting conveying belt to rotate, thereby driving width adjusting screw rods on two sides of the device to rotate, and moving track assemblies to transversely move until the distance between the two track assemblies is matched with the width of a PCB to be processed currently;
conveying the PCB to an automatic clamping plate device from the previous process;
the feeding inductor senses the PCB to enter, and the PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the clamping station;
the first positioning inductor senses the PCB, the PLC controls the second air cylinder to be started, a piston rod of the second air cylinder extends out to push the positioning piece to rotate downwards along the guide groove and fall into the opening of the track cover plate, and the movement of the PCB is blocked;
fifthly, the second positioning sensor senses the PCB, the PLC controls the stepping motor to stop, and the PCB stops at the clamping station;
sixthly, the PLC controller controls the first cylinder to be started, the driven block is pushed to move forwards, the transverse sliding plate is driven to move forwards in a transverse mode, the shaft rod slides in the obliquely arranged waist-shaped hole, the jacking clamping plate is driven to ascend, and the jacking clamping plate is matched with the clamping sheet to clamp and fix the PCB;
after the PCB is machined, the PLC controls the first air cylinder to reset to drive the driven block to move backwards, the transverse sliding plate to move backwards, the shaft rod slides in the obliquely arranged waist-shaped hole to drive the jacking clamping plate to descend, and the PCB is loosened;
and the PLC controller controls the second cylinder to reset, pulls the positioning piece to rotate upwards along the guide groove, and exits from the opening;
the self-supporting PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the next procedure;
after the discharging inductor induces the PCB to leave the automatic clamping plate device, the new PCB is conveyed to enter the device in the previous process.
Preferably, the method comprises the following steps: the step of adjusting the distance between the two track assemblies can be further realized by using a width adjusting handle.
Compared with the prior art, the invention has the beneficial effects that:
the adjustable width guide screw assembly is characterized in that a width adjusting screw penetrates through a movable rail assembly and a fixed rail assembly in sequence, the fixed rail assembly is fixed on a bottom plate through a fixing seat, the other end of the width adjusting screw is fixed on the bottom plate through a screw support, the movable rail assembly is supported through screws on two sides, the use of a rail is reduced, meanwhile, the width adjusting screw can guarantee quick adjusting precision and can also play a supporting role, the number of parts is reduced, the maintenance cost is reduced, the working efficiency is improved, the whole working of the device is stable, the adjustable width guide screw assembly can adapt to various PCB boards with different width sizes, meanwhile, a width adjusting handle is also assisted with the width adjusting screw, and errors can be timely and manually adjusted in the automatic width adjusting process;
the device is provided with a plurality of induction components which are in control connection with the PLC, and the PCB can be accurately positioned by matching with the PCB positioning mechanism;
the PCB board jacking and clamping mechanism controls the driven block to move transversely by the aid of the first air cylinder so as to drive the transverse sliding plate to move, and then controls the jacking and clamping plate to lift.
Drawings
FIG. 1 is a schematic view of the automatic clamping apparatus of the present invention;
FIG. 2 is a schematic view of the automatic clamping device according to another aspect of the present invention;
FIG. 3 is a front view of the automatic clamping device of the present invention;
FIG. 4 is a schematic structural view of a fixed track assembly;
FIG. 5 is a schematic view of the structure of the fixed track assembly (without jacking clamps);
FIG. 6 is a schematic view of the structure of the fixed rail assembly (without the jacking shoes and the cross slide).
Description of the main component symbols
| 1 |
21 first |
22 |
221 opening |
| 31 |
32 second |
321 |
322 |
| 33 |
331 |
34 |
35 |
| 36 |
37 |
41 |
42 |
| 43 driven |
44 |
45 |
51 width- |
| 52 width- |
53 width- |
531 |
532 width- |
| 533 |
54 width-adjustable driven |
55 width- |
561 |
| 562 |
563 Right limit switch | 6PCB |
61 |
| 611 |
62 driven |
63 |
631 spring |
| 64 |
651 |
652 |
653 |
| 654 |
661 |
662 |
663 lifting clamping plate |
| 664 waist type slotted |
67 clamping piece | 7PCB |
71 |
| 72 |
73 |
74 locating |
75 guide piece |
| 8PCB board |
Detailed Description
The invention will be described in more detail below with reference to the accompanying drawings:
the following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention. The directional terms used in the present invention, such as "up", "down", "front", "back", "left", "right", "top", "bottom", etc., refer to the directions of the attached drawings. Accordingly, the directional terms used are used for explanation and understanding of the present invention, and are not used for limiting the present invention.
Referring to fig. 1 and 2, an automatic board clamping device includes a bottom board 1, a movable rail assembly 2, a fixed rail assembly, a width adjusting mechanism 5 connected to the movable rail assembly and the fixed rail assembly through a width adjusting screw, and a control assembly, wherein the movable rail assembly and the fixed rail assembly are symmetrically provided with a PCB board jacking clamping mechanism 6 and a PCB board positioning mechanism 7, and a PCB board sensing mechanism is further arranged between the movable rail assembly and the fixed rail assembly;
the movable track assembly and the fixed track assembly are symmetrically arranged on the bottom plate 1 in parallel, the movable track assembly comprises a movable track assembly, a first track side plate 21, a belt conveying structure fixedly arranged on the inner side of the first track side plate 21, a track cover plate 22 fixed on the upper surface of the first track side plate 21, a PCB lifting and clamping mechanism 6 and a PCB positioning mechanism 7 which are arranged on the first track side plate 21, and the track cover plate 22 is provided with a notch 221 for accommodating a positioning piece 74 of the PCB positioning mechanism 7;
the fixed track assembly comprises a fixed seat 31 for fixing a second track side plate 32 on the bottom plate 1, the second track side plate 32, a belt conveying structure fixedly arranged on the inner side of the second track side plate 32, a track cover plate 33 fixed on the upper surface of the second track side plate 32, a PCB lifting clamping mechanism and a PCB positioning mechanism arranged on the second track side plate 32, wherein the track cover plate 33 is provided with a notch 331 for accommodating a positioning piece of the PCB positioning mechanism;
the feeding end of the inner side of the second rail side plate 32 is fixedly provided with a feeding inductor 34 through a support, the discharging end of the inner side of the second rail side plate 32 is fixedly provided with a discharging inductor 35 through a support, and the lower part of the inner side of the second rail side plate 32, which is located at the position corresponding to the PCB positioning mechanism 7, is fixedly provided with a first positioning sensor 36 and a second positioning sensor 37 through supports respectively.
The belt conveying structure comprises a stepping motor 41, a driving wheel 42, a plurality of driven wheels 43, a conveying belt 44 and a belt supporting piece 45, wherein the stepping motor 41 is fixed on the outer side of the track side plate, an output shaft penetrates through the track side plate to be connected with the driving wheel 42, and the driving wheel 42 and the plurality of driven wheels 43 are fixedly arranged on the inner side of the track side plate;
the driven wheels 43 comprise a front driven wheel and a rear driven wheel which are positioned at the front end and the rear end, and a plurality of tensioning driven wheels arranged between the front driven wheel and the rear driven wheel, the driving wheel 42 is sequentially connected with the driven wheels in a transmission way through a conveying belt 44, and the conveying belt 44 is connected between the driving wheel 42 and the tensioning driven wheels and a tensioning section connected between the tensioning driven wheels in an S shape for improving the tension of the conveying belt;
the belt supporting piece 45 is fixedly arranged on the inner side of the side plate of the track, is positioned between the front driven wheel and the rear driven wheel, is sleeved in the conveying belt 44 and is used for supporting the conveying belt 44.
The width adjusting mechanism is fixedly arranged on the bottom plate 1 and is sequentially connected with the movable track assembly and the fixed track assembly through the width adjusting screw rod, and the movable track assembly is movably arranged on the width adjusting screw rod.
Referring to fig. 1, 2, and 3, the width adjusting mechanism includes a width adjusting motor 51 fixed on the bottom plate through a motor bracket, a width adjusting driving wheel 52 fixed on the other side of the motor bracket and connected to an output shaft of the width adjusting motor 51, width adjusting lead screws 53 respectively arranged on the feeding side and the discharging side of the device, a plurality of width adjusting driven wheels 54 respectively fixed on the end of the width adjusting lead screws 53 and on the motor bracket, and a width adjusting transmission belt 55 for transmission connection with the width adjusting driving wheel 52 and the plurality of width adjusting driven wheels 54, one end of each width adjusting lead screw 53 is fixed on the bottom plate 1 through a lead screw support 531, the other end of each width adjusting lead screw passes through a movable track assembly and a fixed track assembly in sequence and then is fixed on the second track side plate 32 through a lead screw fixing base (not shown), wherein a width adjusting handle 532 for fine adjustment of the end of one width adjusting lead screw 53 is further provided;
the width-adjusting driving wheel 51 is fixedly arranged at the center of the motor bracket, the two width-adjusting driven wheels 54 fixedly arranged on the motor bracket are tension wheels, the two width-adjusting driven wheels are fixedly arranged below the width-adjusting driving wheel 51 in parallel and symmetrically arranged about the vertical central line of the motor bracket, and the width-adjusting conveying belt 55 is sequentially connected with the width-adjusting driving wheel 51, the tension wheels and the width-adjusting driven wheels fixed at the end parts of the width-adjusting lead screws 53;
the contact part of the width-adjusting screw 53 and the first rail side plate 21 and the second rail side plate 32 is further sleeved with a buffer glue 533.
The width adjusting mechanism further comprises a width adjusting limiting assembly, the width adjusting limiting assembly comprises a limiting block 561 fixedly arranged on the bottom surface of the first track side plate, a left limiting switch 562 and a right limiting switch 563 which are arranged on two sides of the first track side plate in a split mode and fixedly arranged on the bottom plate, and the limiting switches and the limiting blocks are used for limiting the transverse moving limiting position of the movable track assembly.
Referring to fig. 2, 4, 5, and 6, the PCB lifting clamping mechanism 6 includes a first cylinder 61, a driven block 62, a spring shaft 63, a return spring 64, a translation assembly, and a lifting clamping assembly, the first cylinder 61 is mounted on the outer side of the rail side plate through a cylinder fixing seat 611, the driven block 62 is fixed at the end of the piston rod of the first cylinder 61, the spring shaft 63 is fixed on the outer side of the rail side plate through a spring shaft fixing seat 631, two ends of the return spring 64 are respectively fixed on the driven block 62 and the spring shaft fixing seat 631 and are sleeved on the spring shaft 63, and the driven block 62 passes through the rail side plate and is connected with the translation assembly;
the translation assembly comprises a translation guide rail 651 horizontally and fixedly arranged in a first groove 321 on the inner side of the track side plate, and a translation sliding plate 653 movably arranged on the translation guide rail 651 through a translation sliding block 652, one side surface of the translation sliding plate 653 is connected with a driven block 62, and two ends of the other side surface are respectively provided with a shaft rod 654 in a protruding manner;
the jacking clamping assembly comprises a lifting guide rail 661 vertically fixedly arranged in the second groove 322 on the inner side of the rail side plate, and a jacking clamping plate 663 movably arranged on the lifting guide rail 661 through a lifting slider 662, waist-shaped groove holes 664 inclined by 45 degrees are respectively arranged in the positions, corresponding to the shaft rod 654, of the two sides of the jacking clamping plate 663, the PCB jacking clamping mechanism further comprises clamping pieces 67 fixed on the rail cover plate, and the top surface of the jacking clamping plate 663 is matched with the clamping pieces 67 to clamp the PCB 8.
Referring to fig. 2, the PCB positioning assembly 7 includes a second cylinder 71, a lifting member 72, a pivoting member 73, a positioning member 74, and a guiding member 75, the second cylinder 71 is fixed outside the side plate of the rail through a cylinder mounting plate, the lifting member 72 is fixed at the end of the piston rod of the second cylinder 71, the cross section of the lifting member is in a shape of "concave", the pivoting member 73 is inserted into a groove of the lifting member 72 and is pivoted through a pivot, the other end of the pivoting member 73 is pivoted with the positioning member 74, the guiding member 75 is fixed outside the side plate of the rail and forms a guiding groove in the middle, and the positioning member 74 rotates downward along the guiding groove under the action of the second cylinder 71 and just enters the opening 221 (331) of the rail cover plate to block and position the PCB 8.
The work flow of the automatic plate clamping device provided by the invention specifically comprises the following steps:
the PLC controls a width adjusting motor to start, drives a width adjusting conveying belt to rotate, thereby driving width adjusting screw rods on two sides of the device to rotate, and moving track assemblies to transversely move until the distance between the two track assemblies is matched with the width of a PCB to be processed currently;
conveying the PCB to an automatic clamping plate device from the previous process;
the feeding inductor senses the PCB to enter, and the PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the clamping station;
the first positioning sensor senses the PCB, the PLC controls the second air cylinder to start, a piston rod of the second air cylinder extends out, the positioning piece is pushed to rotate downwards along the guide groove and fall into the opening of the track cover plate, and the movement of the PCB is blocked;
fifthly, the second positioning sensor senses the PCB, the PLC controls the stepping motor to stop, and the PCB stops at the clamping station;
controlling a first cylinder to start by the PLC, pushing a driven block to move forwards, driving a transverse moving sliding plate to move forwards, enabling a shaft rod to slide in a waist-shaped hole which is obliquely arranged, driving a jacking clamping plate to ascend, and enabling the jacking clamping plate to be matched with a clamping sheet to clamp and fix a PCB;
after the PCB is machined, the PLC controls the first air cylinder to reset to drive the driven block to move backwards, the transverse sliding plate to move backwards, the shaft rod slides in the obliquely arranged waist-shaped hole to drive the jacking clamping plate to descend, and the PCB is loosened;
and the PLC controller controls the second cylinder to reset, pulls the positioning piece to rotate upwards along the guide groove, and exits from the opening;
the self-supporting PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the next procedure;
after the discharging inductor induces the PCB to leave the automatic clamping plate device, the new PCB is conveyed to enter the device in the previous process.
After the width adjusting assembly of the automatic clamping device is adjusted, if the width difference is found by workers, the width adjusting handle can be used for rotating the width adjusting screw rod to further adjust the distance between the two track assemblies.
The above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (7)
1. An automatic clamping plate device is characterized by comprising a bottom plate, a movable rail assembly, a fixed rail assembly, a width adjusting mechanism and a control assembly, wherein the width adjusting mechanism and the control assembly are connected with the movable rail assembly and the fixed rail assembly through a width adjusting lead screw;
the fixed track assembly and the movable track assembly are arranged on the bottom plate in parallel and symmetrically, the fixed track assembly and the width adjusting mechanism are fixedly arranged on the bottom plate, the movable track assembly is movably arranged on a width adjusting lead screw of the width adjusting mechanism, and the movable track assembly transversely moves relative to the bottom plate under the action of the width adjusting mechanism to adjust the distance between the two track assemblies so as to adapt to PCB boards with different widths; the movable track assembly is supported by screw rods on two sides, and the width adjusting screw rods can ensure quick adjustment precision and play a supporting role at the same time;
the movable track assembly comprises a first track side plate, a belt conveying structure fixedly arranged on the inner side of the first track side plate, a track cover plate fixed on the upper surface of the first track side plate, a PCB lifting and clamping mechanism and a PCB positioning mechanism, wherein the PCB lifting and clamping mechanism and the PCB positioning mechanism are arranged on the first track side plate;
the fixed track assembly comprises a structure which is the same as that of the movable track assembly, and the fixed track assembly also comprises a fixed seat used for fixing the second track side plate on the bottom plate;
the PCB jacking and clamping mechanism comprises a first air cylinder, a driven block, a spring shaft, a reset spring, a translation assembly and a jacking and clamping assembly, wherein the first air cylinder is installed on the outer side of a track side plate through an air cylinder fixing seat, the driven block is fixed at the end part of a piston rod of the first air cylinder, the spring shaft is fixed on the outer side of the track side plate through a spring shaft fixing seat, two ends of the reset spring are fixedly arranged on the driven block and the spring shaft fixing seat respectively and sleeved on the spring shaft, and the driven block penetrates through the track side plate to be connected with the translation assembly;
the translation assembly comprises a translation guide rail horizontally and fixedly arranged in a first groove in the inner side of the rail side plate, and a translation sliding plate movably arranged on the translation guide rail through a translation sliding block, one side surface of the translation sliding plate is connected with the driven block, and two sides of the other side surface of the translation sliding plate are respectively provided with a shaft lever in a protruding mode;
the jacking clamping assembly comprises a lifting guide rail vertically and fixedly arranged in a second groove in the inner side of the rail side plate, and a jacking clamping plate movably arranged on the lifting guide rail through a lifting slider, waist-shaped slotted holes inclined at set angles are respectively formed in the positions, corresponding to the shaft lever, of two sides of the jacking clamping plate, the PCB jacking clamping mechanism further comprises a clamping piece fixed on the rail cover plate, and the jacking clamping plate is matched with the clamping piece to clamp the PCB; the PCB board jacking clamping mechanism controls the driven block to move transversely by using the first air cylinder so as to drive the translation sliding plate to move, and further controls the jacking clamping plate to lift;
the width adjusting mechanism comprises a width adjusting motor fixedly arranged on the bottom plate through a motor support, a width adjusting driving wheel fixedly arranged on the other side of the motor support and connected with an output shaft of the width adjusting motor, width adjusting lead screws respectively arranged on the feeding side and the discharging side of the device, a plurality of width adjusting driven wheels respectively fixedly arranged on the end parts of the width adjusting lead screws and the motor support, and a width adjusting transmission belt for driving and connecting the width adjusting driving wheel and the plurality of width adjusting driven wheels, wherein one end of each width adjusting lead screw is fixedly arranged on the bottom plate through a lead screw support, the other end of each width adjusting lead screw sequentially penetrates through the movable track assembly and the fixed track assembly and then is fixed on the second track side plate through a lead screw fixing seat, and the end part of one width adjusting lead screw is also provided with a width adjusting handle for finely adjusting the width;
buffer glue is sleeved at the contact part of the width adjusting screw rod and the first track side plate and the second track side plate;
the width adjusting mechanism further comprises a width adjusting and limiting assembly, the width adjusting and limiting assembly comprises limiting blocks fixedly arranged on the bottom surfaces of the first track side plates, limiting switches which are arranged on two sides of the first track side plates in a dividing mode and fixedly arranged on the bottom plate, and the limiting switches are used for limiting the transverse moving limit positions of the movable track assembly.
2. The automatic plate clamping device according to claim 1, wherein the belt conveying structure comprises a stepping motor, a driving wheel, a plurality of driven wheels, a conveying belt and a belt supporting member, the stepping motor is fixedly arranged on the outer side of the track side plate, the output shaft penetrates through the track side plate to be connected with the driving wheel, the driving wheel and the plurality of driven wheels are fixedly arranged on the inner side of the track side plate, the driving wheel and the plurality of driving wheels are sequentially in transmission connection through the conveying belt, and the belt supporting member is fixedly arranged on the inner side of the track side plate and sleeved in the conveying belt to support the conveying belt.
3. The automatic clamp plate device according to claim 1, wherein the PCB plate positioning assembly comprises a second cylinder, a jacking piece, a pivoting piece, a positioning piece and a guiding piece, the second cylinder is fixedly arranged on the outer side of the track side plate through a cylinder mounting plate, the jacking piece is fixedly arranged on the end part of a piston rod of the second cylinder, the cross section of the end part of the piston rod is in a concave shape, the pivoting piece is arranged in a groove of the jacking piece and is pivoted through a pivot, the other end of the pivoting piece is pivoted with the positioning piece, the guiding piece is fixedly arranged on the outer side of the track side plate, the middle of the guiding piece forms a guiding groove, the positioning piece rotates downwards along the guiding groove under the action of the second cylinder, and the positioning piece just enters the opening of the track cover plate and blocks and positions the PCB plate.
4. The automatic board clamping device according to claim 1, wherein the PCB sensing mechanism comprises a feeding sensor disposed at the feeding end of the device for sensing feeding of the PCB, a discharging sensor disposed at the discharging end of the device for sensing discharging of the PCB, a first positioning sensor and a second positioning sensor disposed between the fixed rail assembly and the movable rail assembly for sensing arrival of the PCB at the clamping station.
5. The automatic plate clamping device according to claim 1, wherein the control component is a PLC controller, the feeding sensor, the discharging sensor, the first positioning sensor, the second positioning sensor and the limit switch are in control connection with the PLC controller, and the PLC controller is in control connection with the stepping motor, the width adjusting motor, the first air cylinder and the second air cylinder.
6. A positioning and clamping method of an automatic clamp device according to claim 1, comprising the steps of:
the PLC controls a width adjusting motor to start, drives a width adjusting conveying belt to rotate, thereby driving width adjusting screw rods on two sides of the device to rotate, and moving track assemblies to transversely move until the distance between the two track assemblies is matched with the width of a PCB to be processed currently;
conveying the PCB to an automatic clamping plate device from the previous process;
the feeding inductor senses the PCB to enter, and the PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the clamping station;
the first positioning inductor senses the PCB, the PLC controls the second air cylinder to be started, a piston rod of the second air cylinder extends out to push the positioning piece to rotate downwards along the guide groove and fall into the opening of the track cover plate, and the movement of the PCB is blocked;
fifthly, the second positioning sensor senses the PCB, the PLC controls the stepping motor to stop, and the PCB stops at the clamping station;
controlling a first cylinder to start by the PLC, pushing a driven block to move forwards, driving a transverse moving sliding plate to move forwards, enabling a shaft rod to slide in a waist-shaped hole which is obliquely arranged, driving a jacking clamping plate to ascend, and enabling the jacking clamping plate to be matched with a clamping sheet to clamp and fix a PCB;
after the PCB is machined, the PLC controls the first air cylinder to reset to drive the driven block to move backwards, the transverse sliding plate to move backwards, the shaft rod slides in the obliquely arranged waist-shaped hole to drive the jacking clamping plate to descend, and the PCB is loosened;
and the PLC controller controls the second cylinder to reset, pulls the positioning piece to rotate upwards along the guide groove, and exits from the opening;
the self-supporting PLC controls the stepping motor to start, drives the conveying belt to rotate, and conveys the PCB to the next procedure;
after the discharging inductor induces the PCB to leave the automatic clamping plate device, the new PCB is conveyed to enter the device in the previous process.
7. The automatic clamp plate apparatus of claim 6, wherein said step of adjusting further includes adjusting a distance between the two rail assemblies using a width adjustment handle.
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| JP2001015194A (en) * | 1999-05-05 | 2001-01-19 | Thomas & Betts Corp <T&B> | Improved smart card reader used at dispositions elevated from printed circuit board |
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