Automatic positioning and pre-bending device for FPC circuit board

Abstract

The application relates to an automatic positioning and pre-bending device for an FPC circuit board, and belongs to the technical field of FPC circuit board bending, which comprises a workbench and a processing assembly, the processing assembly is arranged on the workbench, the workbench is provided with a positioning piece and a first vacuum machine, the positioning piece is communicated with the first vacuum machine, the positioning piece is used for placing and fixing a workpiece, the processing assembly comprises a first pressing block and a second pressing block, the first pressing block moves up and down relative to the workbench, the first pressing block is used for pressing and bending the workpiece, the second pressing block slides relative to the workbench, and the second pressing block is used for secondarily pressing the bent part of the workpiece pressed by the first pressing block, so that the workpiece is pre-bent and formed. The application has the beneficial effects of realizing automatic pre-bending processing and improving the positioning precision of pre-bending processing.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of FPC circuit board bending, in particular to an automatic positioning and pre-bending device for FPC circuit board. BACKGROUND

[0002] FPC circuit board is a kind of highly reliable and excellent flexible printed circuit board made of polyimide or polyester film. It has the characteristics of high wiring density, light weight, thin thickness and good bending property. At present, due to space limitation, the internal structure of most electronic products generally needs to be bent before assembly, but the space available for FPC bending is very small, so it is required to perform a one-step pre-bending action on FPC during production and assembly.

[0003] In the related art, when FPC is pre-bent, an operator directly uses a large needle to press against the FPC circuit board to bend the FPC circuit board.

[0004] According to the related art in the above, the inventors believe that the following defects exist: By manually pressing against the FPC circuit board to bend it, due to manual positioning and construction size deviation, the bending positions and bending degrees of multiple circuit boards are different, which causes deviation between the actual pre-bending degree and the expected pre-bending degree of the circuit board, and further affects subsequent assembly and processing. SUMMARY

[0005] In order to improve the above problems, the present application provides an automatic positioning and pre-bending device for FPC circuit board.

[0006] The automatic positioning and pre-bending device for FPC circuit board provided by the present application adopts the following technical solution:

[0007] An automatic positioning and pre-bending device for FPC circuit board, comprising a workpiece and a workbench, further comprising a processing assembly, the processing assembly is arranged on the workbench, the workbench is provided with a positioning member and a first vacuum machine, the positioning member is in communication with the first vacuum machine, the positioning member is used for placing and fixing the workpiece, the processing assembly comprises a first pressing block and a second pressing block, the first pressing block moves up and down relative to the workbench, the first pressing block presses and bends the workpiece, the second pressing block slides relative to the workbench, the second pressing block secondarily presses the bent part of the workpiece pressed by the first pressing block, so that the workpiece is pre-bent and formed.

[0008] By adopting the technical scheme, the positioning member adsorbs and fixes the workpiece through negative pressure, the first pressing block moves downward to press the workpiece in the first step, the workpiece is preliminarily pre-bent, then the second pressing block moves close to the bent part of the workpiece, the workpiece is pressed in the second step, the workpiece is formed, the pre-bending processing of the workpiece is completed, the automation of the pre-bending processing is realized, and the positioning accuracy of the pre-bending processing is improved.

[0009] Preferably, the workbench is provided with a processing frame, and the processing assembly further comprises an abutting block, a rotating connecting plate, a moving plate and a first cylinder, the abutting block is arranged in the workbench and slides relative to the workbench, the abutting block and the positioning member jointly receive the workpiece, the rotating connecting plate is rotationally connected to the processing frame, one side of the abutting block away from the positioning member is hingedly connected to the rotating connecting plate, one end of the rotating connecting plate away from the abutting block is hingedly connected to the moving plate, the moving plate slides relative to the processing frame, and the first cylinder is fixedly connected to the moving plate.

[0010] By adopting the technical scheme, in the initial state, the abutting block is close to the positioning member, and the first pressing block is located above the workpiece and away from the positioning member. After the workpiece is fixedly placed in place, the abutting block slides away from the positioning member, and a gap is formed between the abutting block and the end face of the positioning member. The abutting block drives the rotating connecting plate to rotate, the rotating connecting plate drives the moving plate and the first pressing block to move close to the workpiece, and the first pressing block moves to the position directly above the gap.

[0011] Preferably, the processing assembly further comprises a processing cylinder, the processing cylinder is fixedly connected to one side of the abutting block away from the positioning member, a processing through hole is formed in the abutting block, the second pressing block is located in the processing through hole, and the second pressing block is fixedly connected to a piston rod of the processing cylinder.

[0012] By adopting the technical scheme, after the first pressing block bends and presses the workpiece, the abutting block moves back to the initial state, the processing cylinder is started to drive the second pressing block to extend out of the processing through hole, move towards the bent part of the workpiece, and press the workpiece in the second step.

[0013] Preferably, one side of the first pressing block and the second pressing block away from the workpiece is rotationally connected with a buffer roller.

[0014] By adopting the technical scheme, the buffer roller is arranged to reduce the hard collision damage of the first pressing block and the second pressing block to the workpiece in the pre-bending process, and to reduce the scratching and friction of the bent part of the workpiece.

[0015] Preferably, the positioning member comprises a positioning block, a positioning sliding block and a positioning cylinder, the positioning block is fixedly connected to the workbench, a plurality of positioning suction holes are formed on the side of the positioning block away from the workbench, the positioning cylinder is fixedly connected to the workbench and located on the side of the positioning block away from the abutting block, the positioning sliding block is fixedly connected to the piston rod of the positioning cylinder, and the positioning cylinder drives the positioning sliding block to slide relative to the positioning block.

[0016] By adopting the above technical scheme, the first vacuum machine operates to form a negative pressure state in the positioning block to adsorb and position the workpiece; after the pre-bending process is completed, the positioning cylinder is started to drive the positioning sliding block to slide toward the side of the positioning block, thereby leaving space for the bent part of the workpiece, so as to facilitate separation of the workpiece from the positioning block.

[0017] Preferably, the positioning sliding block comprises a first connecting block, a second connecting block and an extension part, the first connecting block and the second connecting block are respectively arranged on the opposite sides of the positioning block along the length direction, the first connecting block, the second connecting block and the positioning block form a positioning groove for placing the workpiece, the first connecting block and the second connecting block are slidably connected to the workbench, the extension part is arranged at one end of the positioning block facing the abutting block, the extension part is fixedly connected with the first connecting block and the second connecting block, and the first connecting block and the second connecting block are fixedly connected with the piston rod of the positioning cylinder.

[0018] By adopting the above technical scheme, the positioning cylinder drives the first connecting block and the second connecting block to slide away from the abutting block, the first connecting block and the second connecting block drive the extension part to move close to the positioning block, so that the extension part is sleeved outside the positioning block.

[0019] Preferably, the extension part is made of rubber material.

[0020] By adopting the above technical scheme, in the initial state, the upper and lower sides of the extension part are aligned with the upper and lower sides of the positioning block, so as to facilitate flat placement of the workpiece; when the positioning cylinder drives the extension part to move relative to the positioning block, since the extension part is made of rubber, the extension part can be sleeved on the positioning block by utilizing the elasticity of the extension part.

[0021] Preferably, the feeding assembly further comprises a feeding cylinder, a feeding sliding block, a feeding gear row and a feeding claw, the cylinder body of the feeding cylinder is fixedly connected to the connecting frame, the feeding sliding block is fixedly connected to the piston rod of the feeding cylinder, and the feeding sliding block slides relative to the connecting frame. The feeding gear row is fixedly connected to the connecting frame, the length direction of the feeding gear row is consistent with the moving direction of the piston rod of the feeding cylinder, the feeding sliding block is rotatably connected with a feeding shaft, one end of the feeding shaft is fixedly connected with a feeding gear, the feeding gear is engaged with the feeding gear row, one end of the feeding shaft away from the feeding gear is fixedly connected with a feeding connecting rod, and the feeding claw is arranged at one end of the feeding connecting rod away from the feeding shaft.

[0022] By adopting the technical scheme, the feeding cylinder drives the feeding slider to slide along the connecting frame, and drives the feeding gear to move, since the feeding gear is engaged with the feeding gear row, the feeding gear drives the feeding connecting rod and the feeding claw to rotate and move synchronously, so that the feeding claw realizes the moving and placing process of the workpiece.

[0023] Preferably, the feeding claw comprises a first lifting rod, a first connecting plate and a plurality of material taking blocks, the first lifting rod is rotationally connected to one end of the feeding connecting rod away from the feeding rotating shaft, the first connecting plate is fixedly connected to one end of the first lifting rod away from the feeding connecting rod, the plurality of material taking blocks are fixedly connected to one side of the first connecting plate away from the first lifting rod, and the feeding assembly further comprises a second vacuum machine, the plurality of material taking blocks are in communication with the second vacuum machine, and a plurality of material taking suction holes are formed in one side of the material taking block facing the workpiece.

[0024] By adopting the technical scheme, the second vacuum machine is started, a negative pressure is formed in the material taking block, the first lifting rod, the first connecting plate and the material taking block carry the workpiece to move and rise, and the workpiece is moved; after the first lifting rod rotates to the highest point, the first lifting rod gradually descends, the material taking block is aligned with the positioning block, and the workpiece is transferred to the positioning block, so that the positioning block is convenient for fixing and positioning the workpiece, and the positioning accuracy of subsequent pre-bending processing is improved.

[0025] Preferably, the feeding assembly further comprises a first feeding sensor and a second feeding sensor, the feeding connecting rod abuts against the first feeding sensor or the second feeding sensor, the first feeding sensor and the second feeding sensor are electrically connected with the second vacuum machine, and the first feeding sensor and the second feeding sensor are used for transmitting signals to the second vacuum machine.

[0026] By adopting the technical scheme, the feeding connecting rod abuts against the first feeding sensor, the first feeding sensor transmits signals to the second vacuum machine, the second vacuum machine is started, a negative pressure is formed in the material taking block, and the material taking block sucks the workpiece; when the material taking block is located directly above the positioning member, the feeding connecting rod abuts against the second feeding sensor, the second feeding sensor sends signals to the second vacuum machine, the second vacuum machine stops running after receiving the signals, the material taking block releases the adsorption force on the workpiece, and due to the adsorption effect of the positioning member, the workpiece is transferred to the positioning member, so that subsequent pre-bending processing is facilitated.

[0027] In summary, the present application has at least one of the following beneficial technical effects:

[0028] 1. Through the setting of the positioning piece, the first pressing block and the second pressing block, the positioning piece is adsorbed and fixed to the workpiece by negative pressure, the first pressing block moves downward to press the workpiece in the first step, so that the workpiece is preliminarily pre-bent, and then the second pressing block moves close to the bent part of the workpiece to press the workpiece in the second step, so that the workpiece is shaped, the pre-bending processing of the workpiece is completed, the automation of the pre-bending processing is realized, and the positioning accuracy of the pre-bending processing is improved.

[0029] 2. Through the setting of the positioning block, the positioning cylinder and the positioning sliding block, the first vacuum machine is operated to form a negative pressure state in the positioning block to adsorb and position the workpiece; after the pre-bending processing is completed, the positioning cylinder is started to drive the positioning sliding block to slide towards the side of the positioning block, so as to leave space for the bent part of the workpiece, and facilitate the separation of the workpiece from the positioning block. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the overall structure schematic diagram of the FPC circuit board automatic positioning pre-bending device in the embodiment of the application.

[0031] Figure 2 It is the schematic diagram of the state of the workpiece before pre-bending processing in the embodiment of the application.

[0032] Figure 3 It is the overall structure schematic diagram of the FPC circuit board automatic positioning pre-bending device in the embodiment of the application.

[0033] Figure 4 It is Figure 3 the local enlarged view of A part in

[0034] Figure 5 It is the schematic diagram of the positional relationship between the positioning piece and the processing assembly in the embodiment of the application.

[0035] Figure 6 It is Figure 5 the local enlarged view of B part in

[0036] Figure 7 It is the process schematic diagram of the first pressing of the workpiece by the processing assembly in the embodiment of the application.

[0037] Figure 8 It is the state schematic diagram of the workpiece after the first pre-bending processing in the embodiment of the application.

[0038] Figure 9 It is the process schematic diagram of the second pressing of the workpiece by the processing assembly in the embodiment of the application.

[0039] Figure 10 It is Figure 9 the local enlarged view of C part in

[0040] Figure 11 is a specific structure schematic diagram for embodying the positioning member in the embodiment of the application.

[0041] Figure 12 The embodiment of the application is used to embody the state schematic diagram of the workpiece after the second bending processing.

[0042] The reference signs are explained: 1, workpiece; 2, workbench; 21, feeding table; 211, feeding block; 22, processing table; 221, positioning member; 2211, positioning block; 2212, positioning suction hole; 2213, containing groove; 222, positioning sliding block; 2221, first connecting block; 2222, second connecting block; 2223, telescopic part; 223, positioning air cylinder; 23, connecting frame; 24, processing frame; 25, abutting sliding groove; 3, feeding assembly; 31, feeding air cylinder; 32, feeding sliding block; 321, feeding rotating shaft; 322, feeding gear; 323, feeding connecting rod; 33, feeding tooth row; 34, feeding claw; 341, first lifting rod; 342, first connecting plate; 343, material taking block; 35, first sliding rail; 351, first sliding block; 36, induction fixing block; 361, feeding inductor one; 362, feeding inductor two; 4, processing assembly; 41, abutting block; 411, processing through hole; 412, abutting moving rod; 42, rotating connecting plate; 43, moving plate; 431, first air cylinder; 44, first pressing block; 441, buffer roller; 45, processing air cylinder; 451, second pressing block; 5, material collecting assembly; 51, material collecting air cylinder; 52, material collecting sliding block; 521, material collecting rotating shaft; 522, material collecting gear; 523, material collecting connecting rod; 53, material collecting tooth row; 54, material collecting claw; 541, second lifting rod; 542, second connecting plate; 543, material collecting block; 55, second sliding rail; 551, second sliding block; 561, material collecting inductor one; 562, material collecting inductor two; 57, material collecting box. DETAILED DESCRIPTION

[0043] The following will be combined with the Figures 1-12 The application is further explained in detail.

[0044] The embodiment of the application discloses a kind of FPC circuit board automatic positioning pre-bending device, as Figure 1 And 2 As shown in the figure, it includes workpiece 1, workbench 2, feeding assembly 3, processing assembly 4 and material collecting assembly 5, workbench 2 is fixedly connected with positioning member 221, positioning member 221 is used to place and fix workpiece 1, feeding assembly 3 is used to move workpiece 1, processing assembly 4 is used to bend workpiece 1, material collecting assembly 5 is used to concentrate after bending processing, realize the automation of pre-bending processing, improve the processing efficiency while improving the positioning accuracy of pre-bending processing.

[0045] AsFigure 1 As shown in the drawings, the workbench 2 comprises a feeding table 21, and the feeding table 21 is fixedly connected with feeding blocks 211, and the feeding blocks 211 are provided with profiling feeding grooves according to the profile of the workpiece 1. In the embodiment, three feeding blocks 211 are arranged. An operator is located at one side of the feeding table 21, and manually places the workpiece 1 to be processed into the feeding groove, and waits for the next step of transferring.

[0046] As shown in the drawings, Figure 1 , 3 and 4, the workbench 2 is fixedly connected with a connecting frame 23, and the feeding assembly 3 comprises a feeding cylinder 31, a feeding sliding block 32, a feeding gear row 33 and a feeding claw 34. The cylinder body of the feeding cylinder 31 is fixedly connected to the connecting frame 23, the feeding sliding block 32 is fixedly connected to the piston rod of the feeding cylinder 31, and the feeding sliding block 32 slides relative to the connecting frame 23. The length direction of the feeding gear row 33 is consistent with the moving direction of the piston rod of the feeding cylinder 31, the feeding gear row 33 is fixedly connected to the connecting frame 23, the feeding sliding block 32 is rotatably connected with a feeding rotating shaft 321, one end of the feeding rotating shaft 321 is fixedly connected with a feeding gear 322, and the feeding gear 322 is engaged with the feeding gear row 33. The other end of the feeding rotating shaft 321 away from the feeding gear 322 is fixedly connected with a feeding connecting rod 323. The feeding claw 34 comprises a first lifting rod 341, a first connecting plate 342 and a plurality of feeding blocks 343. The first lifting rod 341 is rotatably connected to the other end of the feeding connecting rod 323 away from the feeding rotating shaft 321, and the first connecting plate 342 is fixedly connected to the other end of the first lifting rod 341 away from the feeding connecting rod 323. The plurality of feeding blocks 343 are uniformly fixedly connected to the first connecting plate 342. The plurality of feeding blocks 343 are in communication with a second vacuum machine (not shown in the drawings). The plurality of feeding blocks 343 are provided with a plurality of feeding suction holes on the side facing the workbench 2, and the feeding blocks 343 take the workpiece by negative pressure adsorption.

[0047] As shown in the drawings, Figure 3 and 4 , the feeding assembly 3 further comprises a first sliding rail 35 and a first sliding block 351. The first sliding rail 35 is fixedly connected to the connecting frame 23, and the length direction of the first sliding rail 35 is consistent with the moving direction of the piston rod of the feeding cylinder 31. The first sliding block 351 is located in the first sliding rail 35 and slides along the first sliding rail 35. The side of the first sliding block 351 away from the first sliding rail 35 is provided with a first lifting hole in the vertical direction, and the first lifting rod 341 is located in the first lifting hole and slides up and down along the first sliding block 351.

[0048] As shown in the drawings, Figure 4 and 5As shown, the feeding assembly 3 further comprises a sensing fixed block 36, a feeding sensor one 361 and a feeding sensor two 362. The sensing fixed block 36 is fixedly connected to the first slide rail 35. The feeding sensor one 361 and the feeding sensor two 362 are both in electrical connection with the first vacuum machine. After the feeding sensor one 361 transmits a signal to the first vacuum machine, the first vacuum machine starts. After the feeding sensor two 362 transmits a signal to the first vacuum machine, the first vacuum machine stops.

[0049] As shown in the drawings, Figure 5 As shown, the workbench 2 further comprises a processing table 22. The processing table 22 is provided with positioning members 221 for placing and fixing the workpieces 1 during pre-bending processing. The positioning members 221 are in communication with the first vacuum machine (not shown in the drawings). The positioning members 221 fix the workpieces 1 by means of negative pressure adsorption. The positioning members 221 are provided in three groups. The spacing between the three groups of positioning members 221 is consistent with the spacing between the feeding blocks 211 and the spacing between the taking blocks 343. This can realize synchronous processing of three workpieces 1, greatly improving the pre-bending processing efficiency.

[0050] The operator places the workpieces 1 one by one according to the profile and position of the profiling groove. The feeding link 323 abuts against the feeding sensor one 361. The feeding sensor one 361 transmits a signal to the first vacuum machine. The first vacuum machine starts and forms negative pressure in the taking block 343. The taking block 343 corresponds to the feeding block 211 one by one and sucks the workpieces 1 from the profiling groove. Then the feeding cylinder 31 starts. The piston rod of the feeding cylinder 31 extends and drives the feeding slide block 32 to slide along the connecting frame 23. Since the feeding gear 322 is in mesh with the feeding gear rack 33, the feeding gear 322 rotates accordingly. Under the driving of the feeding gear 322 and the feeding link 323, the first lifting rod 341, the first connecting plate 342 and the taking block 343 rise. When the first lifting rod 341 rises to the highest point, it begins to descend. In this process, the first lifting rod 341 always moves in the first lifting hole; under the driving of the first lifting rod 341, the first slide block 351 slides along the first slide rail 35. The movement path of the first lifting rod 341 plays a guiding and limiting role, making the batch transfer and positioning of the workpieces 1 more accurate.

[0051] The first lifting rod 341 continues to move downward. When the taking block 343 is located directly above the positioning member 221, the feeding link 323 abuts against the feeding sensor two 362. The feeding sensor two 362 transmits a signal to the first vacuum machine. After receiving the signal, the first vacuum machine stops running. After the first vacuum machine stops, the taking block 343 releases the adsorption force on the workpiece 1. Due to the adsorption action of the positioning member 221, the workpiece 1 is transferred to the positioning member 221, which is convenient for subsequent pre-bending processing.

[0052] As shown in the drawings, Figure 5 and 6As shown, the workbench 2 is further fixedly connected with a machining frame 24, and the machining assembly 4 comprises an abutting driving source (not shown in the figure), an abutting block 41, a rotating connecting plate 42, a moving plate 43 and a first pressing block 44. A abutting sliding groove 25 is formed below the workbench 2, and the abutting driving source is fixedly connected in the workbench, and the abutting driving source drives the abutting block 41 to slide in the abutting sliding groove 25. The abutting block 41 is close to the positioning member 221, and in the initial state, the abutting block 41 and the positioning member 221 jointly receive the workpiece 1. The side of the abutting block 41 away from the positioning member 221 is fixedly connected with an abutting moving rod 412, and the end of the abutting moving rod 412 away from the abutting block 41 is hingedly connected with the rotating connecting plate 42. The rotating connecting plate 42 is rotationally connected to the machining frame 24, and the rotating axis of the rotating connecting plate 42 is parallel to the moving direction of the piston rod of the feeding cylinder 31. The end of the rotating connecting plate 42 away from the abutting moving rod 412 is hingedly connected with the moving plate 43, and the moving plate 43 slides relative to the machining frame 24. The first pressing block 44 is provided with three first pressing blocks 44 corresponding to the positions of the positioning member 221, and the end of the moving plate 43 away from the rotating connecting plate 42 is fixedly connected with a first cylinder 431, and the first pressing block 44 is fixedly connected to the piston rod of the first cylinder 431, and the first cylinder 431 drives the first pressing block 44 to move up and down in the direction close to or away from the workpiece 1. The abutting moving rod 412, the rotating connecting plate 42 and the moving plate 43 form a connecting rod structure, so that the sliding of the abutting block 41 relative to the workbench 2 and the sliding of the moving plate 43 relative to the machining frame 24 both have a tendency of circular arc movement.

[0053] As shown in Figure 6 , 7 and 8, in the initial state, the abutting block 41 is close to the positioning member 221, and the first pressing block 44 is located above the workpiece 1 and away from the side of the positioning member 221. After the workpiece 1 is fixedly placed in place, the abutting block 41 slides away from the positioning member 221, the abutting block 41 is separated from the workpiece 1, and a gap is formed between the abutting block 41 and the end face of the positioning member 221. The abutting block 41 drives the abutting moving rod 412 to move, the abutting moving rod 412 drives the rotating connecting plate 42 to rotate, the rotating connecting plate 42 drives the moving plate 43 and the first pressing block 44 to move close to the workpiece 1, and the first pressing block 44 is moved to the position directly above the gap. Then the first pressing block 44 moves downward and extends into the gap to press the workpiece 1. In order to reduce the hard collision damage to the workpiece 1 in the pre-bending process, the side of the first pressing block 44 facing the workpiece 1 is hingedly connected with a buffer roller 441, and the arrangement of the buffer roller 441 can also reduce the scratching and friction of the bending part of the workpiece 1 when the first pressing block 44 moves upward. Then the first pressing block 44 moves upward, and at this time the bending part of the workpiece 1 is located in the gap. Then the abutting block 41 moves close to the positioning member 221 and abuts against the workpiece 1. The retention of the workpiece 1 after the first step of bending is improved, and the springback deformation due to the flexibility of the workpiece 1 itself is reduced.

[0054] As shown in Figure 9 and10 As shown, the processing assembly 4 further comprises a second pressing block 451 and a processing cylinder 45, the processing cylinder 45 is fixedly connected to the side of the abutting block 41 away from the positioning member 221, the abutting block 41 is provided with a processing through hole 411, the second pressing block 451 is located in the second through hole and is fixedly connected to the piston rod of the processing cylinder 45, the moving direction of the second pressing block 451 is consistent with the moving direction of the abutting block 41. The end face of the positioning member 221 is fixedly connected with a pressure sensor, and the pressure sensor is electrically connected with the processing cylinder 45. When the abutting block 41 moves close to the positioning member 221 and abuts against the bending part of the workpiece 1 and the positioning member 221, the pressure sensor transmits a signal to the processing cylinder 45, and after receiving the signal, the processing cylinder 45 drives the second pressing block 451 to extend out of the processing through hole 411 to perform secondary pressing processing on the bending part of the workpiece 1. The side of the second pressing block 451 close to the workpiece 1 is also rotatably connected with a buffer roller 441, and the buffer roller 441 has the same effect, which will not be repeated here.

[0055] As shown in the figure, Figure 11 The positioning member 221 comprises a positioning block 2211, a positioning sliding block 222 and a positioning cylinder 223. The positioning block 2211 is fixedly connected to the table top of the workbench 2, and is connected with a third vacuum machine (not shown in the figure). The positioning block 2211 is provided with a plurality of positioning suction holes 2212. The positioning sliding block 222 comprises a first connecting block 2221, a second connecting block 2222 and an elastic part 2223. The first connecting block 2221 and the second connecting block 2222 are respectively arranged on the opposite sides of the positioning block 2211 along the length direction, and a positioning groove for placing the workpiece 1 is formed between the first connecting block 2221, the second connecting block 2222 and the positioning block 2211. The first connecting block 2221 and the second connecting block 2222 are slidably connected to the table top of the workbench 2. The elastic part 2223 is made of rubber material and is fixedly connected with the first connecting block 2221 and the second connecting block 2222. The end of the positioning block 2211 close to the elastic part 2223 is provided with a receiving groove 2213 on the side facing the table top of the workbench 2. The positioning cylinder 223 is fixedly connected to the table top of the workbench 2 and is located on the side of the positioning block 2211 away from the elastic part 2223. The first connecting block 2221 and the second connecting block 2222 are fixedly connected with the piston rod of the positioning cylinder 223. The abutting block 41 is located on the side of the elastic part 2223 away from the positioning block 2211.

[0056] After the pre-bending processing of the workpiece 1 is completed, the positioning cylinder 223 is started to drive the first connecting block 2221, the second connecting block 2222 and the telescopic part 2223 to move, the telescopic part 2223 moves close to the positioning block 2211, the telescopic part 2223 is sleeved on the positioning block 2211 under the elastic action of the telescopic part 2223, and part of the telescopic part 2223 extends into the accommodating groove 2213. Space is left for the second bending part of the workpiece 1, so that the subsequent material collecting assembly 5 can collect the workpiece 1 after pre-bending processing, and the smoothness of the pre-bending processing of the workpiece 1 is improved.

[0057] As shown in Figure 1 , the material collecting assembly 5 comprises a material collecting cylinder 51, a material collecting sliding block 52, a material collecting gear row 53 and a material collecting claw 54. The cylinder body of the material collecting cylinder 51 is fixedly connected to the connecting frame 23. The material collecting sliding block 52 is fixedly connected to the piston rod of the material collecting cylinder 51 and slides relative to the connecting frame 23. The length direction of the material collecting gear row 53 is consistent with the moving direction of the piston rod of the material collecting cylinder 51. The material collecting gear row 53 is fixedly connected to the connecting frame 23. The material collecting sliding block 52 is rotatably connected with a material collecting rotating shaft 521. One end of the material collecting rotating shaft 521 is fixedly connected with a material collecting gear 522. The material collecting gear 522 is engaged with the material collecting gear row 53. The other end of the material collecting rotating shaft 521 away from the material collecting gear 522 is fixedly connected with a material collecting connecting rod 523. The material collecting claw 54 comprises a first lifting rod 341, a first connecting plate 342 and a plurality of material collecting blocks 543. The first lifting rod 341 is rotatably connected to the other end of the material collecting connecting rod 523 away from the material collecting rotating shaft 521. The first connecting plate 342 is fixedly connected to the other end of the first lifting rod 341 away from the material collecting connecting rod 523. The three material collecting blocks 543 are uniformly fixedly connected to the first connecting plate 342 along the length direction of the first connecting plate 342. The plurality of material collecting blocks 543 are in communication with a third vacuum machine (not shown in the figure). The pressure of the third vacuum machine is greater than that of the second vacuum machine. A plurality of material collecting suction holes are formed in the side of the material collecting block 543 facing the workbench 2.

[0058] As shown in Figure 3 , the material collecting assembly 5 further comprises a second sliding rail 55 and a second sliding block 551. The second sliding rail 55 is fixedly connected to the connecting frame 23. The length direction of the second sliding rail 55 is consistent with the moving direction of the piston rod of the material collecting cylinder 51. The second sliding block 551 is located in the second sliding rail 55 and slides along the second sliding rail 55. A second lifting hole is formed in the side of the second sliding block 551 away from the second sliding rail 55 in the vertical direction. The second lifting rod 541 is located in the second lifting hole and slides up and down along the second sliding block 551.

[0059] As shown in Figure 3As shown, the material receiving assembly 5 further comprises a material receiving sensor one 561 and a material receiving sensor two 562, both of which are in electrical connection with the third vacuum machine. After the material receiving sensor one 561 transmits a signal to the third vacuum machine, the third vacuum machine stops; after the material receiving sensor two 562 transmits a signal to the third vacuum machine, the third vacuum machine starts.

[0060] The material feeding assembly 3 and the material receiving assembly 5 operate alternately. After the material feeding assembly 3 moves the workpiece 1 to the machining table 22 and returns, the machining assembly 4 performs twice pre-bending pressing machining on the workpiece 1, and at the same time, the material receiving block 543 moves close to the workbench 2. When the material taking block 343 moves to the material feeding table 21, the material receiving block 543 moves to the machining table 22, at this time, the material receiving connecting rod 523 abuts against the material receiving sensor two 562, the material receiving sensor two 562 transmits a signal to the third vacuum machine, the third vacuum machine starts, a negative pressure is formed in the material receiving block 543, the pressure in the material receiving block 543 is greater than the pressure in the positioning block 2211, and the workpiece 1 is temporarily connected to the material receiving block 543 by adsorption. The material receiving block 543 moves away from the workbench 2, and when the material receiving connecting rod 523 abuts against the material receiving sensor one 561, the material receiving sensor one 561 transmits a signal to the third vacuum machine, the third vacuum machine stops, and the material receiving block 543 releases the adsorption of the workpiece 1. In order to facilitate centralized collection, the machining table 22 away from the side of the material feeding table 21 is provided with a material receiving box 57.

[0061] The implementation principle of the embodiment of the application is as follows:

[0062] The operator places the workpiece 1 to be machined on the material feeding block 211, and the material taking block 343 moves a plurality of workpieces 1 to the machining table 22 and places them in the positioning groove.

[0063] Then, the first pressing block 44 and the second pressing block 451 press and bend the workpiece 1 in turn, so that the workpiece 1 realizes pre-bending machining. After the bending machining is completed, the positioning cylinder 223 drives the telescopic part 2223 to slide close to the positioning block 2211, so as to leave space for the bent part of the workpiece 1. When the material receiving block 543 moves to the positioning block 2211 directly above, it is in a negative pressure operation state and adsorbs the workpiece 1 on the material receiving block 543, so as to collect a plurality of machined workpieces 1 and then place them in the material receiving box 57 for subsequent centralized processing. Through the arrangement of the automatic positioning pre-bending device, the pre-bending machining position of the workpiece 1 is more accurate; single implementation of synchronous machining of multiple workpieces 1 improves the machining efficiency and the consistency of the pre-bending positioning of multiple workpieces 1, which is beneficial to improve the pre-bending machining quality.

[0064] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application, so that: all equivalent changes made according to the structure, shape, principle of the present application should be covered in the protection scope of the present application.

Claims

1. An automatic positioning and pre-bending device for FPC circuit board, comprising a workpiece (1) and a workbench (2), characterized in that: Also include processing assembly (4), the processing assembly (4) is located on the workbench (2), the workbench (2) is provided with positioning part (221) and first vacuum machine, the positioning part (221) is communicated with first vacuum machine, the positioning part (221) is used for placing and fixing workpiece (1), the processing assembly (4) includes first pressing block (44) and second pressing block (451), the first pressing block (44) is lifted and moves relative to the workbench (2), the first pressing block (44) is pressed and bent to workpiece (1), the second pressing block (451) is relative to the workbench (2) and slips, the second pressing block (451) is pressed to the bending part of workpiece (1) after being pressed by the first pressing block (44), so that the workpiece (1) is pre-bent and formed;The workbench (2) is provided with processing frame (24), the processing assembly (4) further includes abutting block (41), rotating connecting plate (42), moving plate (43) and first cylinder (431), the abutting block (41) is located in the workbench (2) and relative to the workbench (2) and slips, the abutting block (41) and positioning part (221) jointly receive workpiece (1), the rotating connecting plate (42) is rotatably connected on the processing frame (24), the side, away from the positioning part (221), of the abutting block (41) is hinged to the rotating connecting plate (42), one end, away from the abutting block (41), of the rotating connecting plate (42) is hinged to the moving plate (43), the moving plate (43) is relative to the processing frame (24) and slips, the first cylinder (431) is fixedly connected to the moving plate (43), the first pressing block (44) is fixedly connected to the piston rod of the first cylinder (431), and the first cylinder (431) drives the first pressing block (44) to lift and move;The processing assembly (4) further includes processing cylinder (45), the processing cylinder (45) is fixedly connected to the side, away from the positioning part (221), of the abutting block (41), the abutting block (41) is provided with processing through hole (411), the second pressing block (451) is located in the processing through hole (411), and the second pressing block (451) is fixedly connected to the piston rod of the processing cylinder (45);The positioning part (221) includes positioning block (2211), positioning sliding block (222) and positioning cylinder (223), the positioning block (2211) is fixedly connected to the workbench (2), a plurality of positioning suction holes (2212) are formed in the side, away from the workbench (2), of the positioning block (2211), the positioning cylinder (223) is fixedly connected to the workbench (2) and located on the side, away from the abutting block (41), of the positioning block (2211), the positioning sliding block (222) is fixedly connected to the piston rod of the positioning cylinder (223), and the positioning cylinder (223) drives the positioning sliding block (222) to slip relative to the positioning block (2211).The positioning slider (222) comprises a first connecting block (2221), a second connecting block (2222) and an extension part (2223), the first connecting block (2221) and the second connecting block (2222) are symmetrically arranged on the two sides of the positioning block (2211) along the length direction, the first connecting block (2221), the second connecting block (2222) and the positioning block (2211) form a positioning groove for placing the workpiece (1), the first connecting block (2221) and the second connecting block (2222) are slidably connected to the workbench (2), the extension part (2223) is arranged at one end of the positioning block (2211) facing the abutting block (41), the extension part (2223) is fixedly connected with the first connecting block (2221) and the second connecting block (2222), and the first connecting block (2221) and the second connecting block (2222) are fixedly connected with the piston rod of the positioning cylinder (223).

2. The automatic positioning and pre-bending device for FPC circuit board according to claim 1, characterized in that: The first pressing block (44) and the second pressing block (451) are rotationally connected with a buffer roller (441) on the side facing the workpiece (1).

3. The automatic positioning and pre-bending device for FPC circuit board according to claim 2, characterized in that: The telescopic part (2223) is made of rubber material.

4. The automatic positioning and pre-bending device for FPC circuit board according to claim 1, characterized in that: Further comprising a feeding assembly (3), the workbench (2) is provided with a connecting frame (23), the feeding assembly (3) comprises a feeding cylinder (31), a feeding sliding block (32), a feeding gear rack (33) and a feeding claw (34), the cylinder body of the feeding cylinder (31) is fixedly connected to the connecting frame (23), the feeding sliding block (32) is fixedly connected to the piston rod of the feeding cylinder (31), the feeding sliding block (32) slides relative to the connecting frame (23), the feeding gear rack (33) is fixedly connected to the connecting frame (23), the length direction of the feeding gear rack (33) is consistent with the moving direction of the piston rod of the feeding cylinder (31), the feeding sliding block (32) is rotationally connected with a feeding rotating shaft (321), one end of the feeding rotating shaft (321) is fixedly connected with a feeding gear (322), the feeding gear (322) is engaged with the feeding gear rack (33), the end of the feeding rotating shaft (321) away from the feeding gear (322) is fixedly connected with a feeding connecting rod (323), and the feeding claw (34) is arranged at the end of the feeding connecting rod (323) away from the feeding rotating shaft (321).

5. The automatic positioning and pre-bending device for FPC circuit board according to claim 4, characterized in that: The feeding claw (34) comprises a first lifting rod (341), a first connecting plate (342) and a plurality of material taking blocks (343), the first lifting rod (341) is rotationally connected to the end of the feeding connecting rod (323) away from the feeding rotating shaft (321), the first connecting plate (342) is fixedly connected to the end of the first lifting rod (341) away from the feeding connecting rod (323), a plurality of the material taking blocks (343) are fixedly connected to the side of the first connecting plate (342) away from the first lifting rod (341), further comprising a second vacuum machine, a plurality of the material taking blocks (343) are in communication with the second vacuum machine, and a plurality of material taking suction holes are formed in the side of the material taking block (343) facing the workpiece (1).

6. The automatic positioning and pre-bending device for FPC circuit board according to claim 5, characterized in that: The feeding assembly (3) further comprises a feeding inductor one (361) and a feeding inductor two (362), the feeding connecting rod (323) abuts against the feeding inductor one (361) or the feeding inductor two (362), the feeding inductor one (361) and the feeding inductor two (362) are electrically connected with the second vacuum machine, and the feeding inductor one (361) and the feeding inductor two (362) are used for transmitting signals to the second vacuum machine.

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