Automatic PIN withdrawing die

Abstract

The utility model relates to the technical field of punching dies, and provides an automatic PIN withdrawing die which comprises a plurality of PINs which are arranged on a concave die plate and a lower die plate in a sliding and penetrating mode and used for positioning, a mounting plate for mounting the PINs and a pushing assembly for pushing the mounting plate to ascend and descend, and a first penetrating hole for the PINs to penetrate is formed in the upper surface of the concave die plate in a penetrating mode. A through groove is formed in the side wall of the lower die plate in a penetrating mode, the pushing assembly is arranged in the through groove, a second penetrating hole allowing the PIN to penetrate through is formed in the upper surface of the lower die plate in a penetrating mode, and the second penetrating hole is communicated with the through groove. The manufacturing method has the beneficial effect that the possibility of warping or wrinkling of the flexible circuit board in the manufacturing process is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of punching dies, and in particular to an automatic PIN removal die. Background Art

[0002] In the prior art, when punching some products or materials with certain flexibility, such as flexible circuit boards, a punching die is needed. The punching die is a processing method that directly makes the material into the required shape by positioning, clamping, cutting and other operations of the flexible circuit board through the die. This process is suitable for large-scale and high-frequency production processes, and has the advantages of high production efficiency and high material utilization. The demand for molds is necessary for the large-scale production of FPC flexible circuit boards.

[0003] The existing punching template usually includes an upper template and a lower template that are arranged opposite to each other, a concave template arranged on the lower template, and a punch arranged on the upper template. The workbench is provided with a lifting member for pushing the upper template toward the lower template and a driving member for pushing the punch for punching. It should be noted that before punching the flexible circuit board, it is usually necessary to position it to reduce the possibility of deviation during punching, which may affect the qualified rate of the product or material.

[0004] In the prior art, positioning pins are usually fixed on the concave template. When performing the punching operation, a hole is pre-opened on the flexible circuit board to be punched, and then the hole is aligned with the positioning pin to pass the positioning pin through the hole for positioning, and then punching is performed. After the punching is completed, the product or material is removed from the fixed positioning pin. Since the flexible circuit board is made of flexible material, this process will cause warping and wrinkling of the product or material, which will affect the appearance of the product or material, and therefore further improvement is needed. Utility Model Content

[0005] In order to reduce the possibility of warping or wrinkling of a flexible circuit board during the manufacturing process, the present application provides an automatic PIN removal mold.

[0006] The present application provides an automatic PIN removal mold, which adopts the following technical solution:

[0007] An automatic PIN removal mold comprises a plurality of PIN pins slidably penetrated in a concave mold plate and a lower mold plate for positioning, a mounting plate for installing the PIN pins, and a pushing component for pushing the mounting plate up and down, wherein a first through hole for the PIN pin to penetrate is formed through the upper surface of the concave mold plate, a through groove is formed through the side wall of the lower mold plate, the pushing component is built into the through groove, a second through hole for the PIN pin to penetrate is formed through the upper surface of the lower mold plate, and the second through hole is connected to the through groove.

[0008] By adopting the above technical solution, before punching the flexible circuit board, the flexible circuit board can be placed on the concave template, and the pre-opened hole can be aligned with the first perforation, and then the pushing component can be started to push the installation plate up and down to push the PIN needle to rise, so that after penetrating the first perforation, it extends to the top of the concave template, and after penetrating the pre-opened hole of the product or material, the lifting member is then started to push the upper template above to fix the flexible circuit board below, and then punch it through the punch. After the punching is completed, the pushing component is started to lower the installation plate to drive the PIN needle to slide away from the pre-opened hole on the product or material, and when it retreats into the first perforation, at this time, because the product or material is fixed by the upper and lower templates, the straightness of the product or material can be maintained at this time, so as to reduce the possibility of warping or wrinkling of the product or material during the production process, so as to reduce the generation of defective products caused by the above situation.

[0009] Preferably, an outer peripheral wall of the PIN needle at the lower end is provided with an external thread, and an upper surface of the mounting plate is provided with a threaded hole threadably connected to the external thread.

[0010] By adopting the above technical solution, the PIN needle is installed on the mounting plate through the cooperation between the internal thread and the external thread for fixation, and if it is damaged or worn during use, it can be replaced by rotating the PIN needle, so as to reduce the possibility of the positioning pin being directly fixed on the concave template and sinking during use, which may cause damage to the concave template, thereby reducing the corresponding cost.

[0011] Preferably, the upper surface of the mounting plate is provided with a plurality of threaded holes along its length direction and width direction.

[0012] By adopting the above technical solution, a plurality of threaded holes are opened on the mounting plate so that PIN pins of corresponding quantity and corresponding positions can be installed according to needs, thereby reducing the possibility of needing to equip the mounting plates with different threaded holes corresponding to different flexible circuit boards, thereby reducing the corresponding cost.

[0013] Preferably, the pushing assembly includes a cylinder, the mounting plate is detachably connected to the cylinder, the piston rod of the cylinder is fixedly connected to a fixing plate, the upper surface of the fixing plate is provided with a sliding groove along its length direction, the mounting plate is protrudingly provided with a sliding plate slidably connected to the sliding groove, and the fixing plate is provided with a limit assembly for limiting the sliding of the sliding plate.

[0014] By adopting the above technical solution, the PIN pin may sink as it is used, which reduces the positioning effect of the flexible circuit board. In the subsequent punching, the size may be inaccurate and the error may be large. Therefore, a fixed plate is provided between the mounting plate and the cylinder, and a slide groove is provided on the fixed plate. A sliding plate slidably connected to the slide groove is provided on the mounting plate. The position of the through hole between the threaded hole on the mounting plate and the concave template can be adjusted, and then the limit assembly is used to limit the position to reduce the possibility of replacing the mounting plate.

[0015] Preferably, the side wall of the sliding plate is provided with an installation groove for installing the limit assembly, the upper surface of the sliding plate is provided with a third through hole connected to the installation groove, the lower surface of the sliding plate is provided with a limit hole, and a plurality of the limit holes are arranged at intervals along the length direction of the sliding plate, and the limit assembly includes a limit rod for slidingly passing through the third through hole, a pushing member for pushing the limit rod to move toward the direction close to the limit hole, and an unlocking member for detaching the limit rod from the limit hole.

[0016] By adopting the above technical solution, when the position of the mounting plate needs to be changed, the limit rod is slid out of the limit hole through the unlocking member to push the mounting plate to slide. After sliding to the appropriate position, the unlocking member is unlocked to push the limit rod toward the limit hole under the action of the pushing member. When the slide is inserted into the limit hole, the sliding of the sliding plate is limited.

[0017] Preferably, the pushing member includes a pushing rod slidably inserted into the mounting groove, a first spring coaxially sleeved on the pushing rod, and a connecting plate fixedly connected to the pushing rod for installation of the first spring, the first spring forces the pushing rod to move in a direction close to the limiting rod, and one end of the first spring away from the connecting plate is fixedly connected to the inner wall of the mounting groove; a first guide surface is provided at the lower end of the limiting rod, a second guide surface for abutting against the first guide surface is provided on the outer peripheral wall of the pushing rod, and the unlocking member is arranged on the connecting plate.

[0018] By adopting the above technical solution, through the cooperation between the first guide surface and the second guide surface, the unlocking piece is used to pull the connecting plate and the push rod in the direction away from the fixed plate, so that the push rod falls under the influence of its own gravity to disengage from the limiting hole, so that the sliding plate can slide. When it slides to the corresponding position, the unlocking piece is released, so that the limiting rod can be pushed to slide and be inserted into the limiting hole under the action of the first spring.

[0019] Preferably, the third through-hole is arranged in an arc shape, the limiting rod is also arranged in an arc shape, the pushing member includes a pushing block hinged to the limiting rod and a second spring fixedly connected to the pushing block, the second spring forces the pushing block to move in a direction close to the limiting rod, one end of the second spring away from the pushing block is fixedly connected to the inner wall of the mounting groove, and the unlocking member is arranged on the pushing block.

[0020] By adopting the above technical solution, under normal circumstances, the second spring forces the push block to slide in the direction away from the second spring, so that the limit rod hinged to the positioning block slides and passes through the limit hole. At this time, a certain force is applied to the unlocking piece to make the limit rod slide and disengage from the limit hole to push the mounting plate to slide. When the sliding plate slides to a suitable position, the unlocking piece is released, so that the sliding plate slides and is inserted into the limit hole for limiting under the elastic force of the second spring.

[0021] Preferably, the unlocking member is a first connecting rope, and the first connecting rope is exposed from the installation groove.

[0022] By adopting the above technical solution, a force is applied to the first connecting rope to drive the pushing rod or the pushing block to move in a direction away from the installation groove.

[0023] Preferably, a pull rod or a pull rope is provided on the mounting plate.

[0024] By adopting the above technical solution, the sliding block on the mounting plate can be pushed to slide along the sliding groove.

[0025] In summary, the utility model has the following beneficial effects:

[0026] By providing a PIN pin and a push assembly, the PIN pin can be raised and lowered by the push assembly. When the PIN pin is raised, it extends to the top of the concave template after penetrating the first perforation, and after penetrating the hole pre-opened in the product or material, the flexible circuit board is positioned. After the flexible circuit board is punched, the push assembly is started to lower the mounting plate to drive the PIN pin to slide out of the hole pre-opened in the product or material, and return to the first perforation. At this time, since the product or material is fixed by the upper and lower templates, the straightness of the product or material can be maintained at this time, so as to reduce the possibility of warping or wrinkling of the product or material during the production process, so as to reduce the production of defective products caused by the above situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0028] Figure 2 is a schematic side view of the structure of the pushing assembly in Example 1 of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the threaded hole in Example 1 of the present application;

[0030] Figure 4 is a schematic diagram of the structure of the limit assembly in Example 2 of the present application;

[0031] Figure 5 is a schematic diagram of the structure of the state in which the limiting rod slides away from the limiting hole in Example 2 of the present application;

[0032] Figure 6 It is a schematic diagram of the structure of the limit assembly in Example 3 of the present application.

[0033] Description of reference numerals: 1, workbench; 11, upper template; 12, lower template; 121, second perforation; 122, through groove; 13, pad; 131, through hole; 14, lifting member; 2, concave template; 21, first perforation; 3, PIN needle; 31, external thread; 4, mounting plate; 41, threaded hole; 42, sliding plate; 421, limit hole; 5, pushing assembly; 51, cylinder; 52, control member; 521, intake pipe; 5 22. Exhaust pipe; 523. Control air pump; 6. Fixing plate; 61. Slide groove; 62. Mounting groove; 621. Fixing ring; 63. Third through hole; 7. Limiting assembly; 71. Limiting rod; 711. First guide surface; 712. Second connecting rope; 72. Pushing member; 721. Pushing rod; 722. First spring; 723. Connecting plate; 724. Pushing block; 725. Second spring; 73. Unlocking member; 8. Second guide surface. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 , further details of this application are given.

[0035] The embodiment of the present application discloses an automatic PIN removal mold.

[0036] Embodiment 1:

[0037] An automatic PIN removal mold, refer to Figure 1 , Figure 2, specifically including an upper template 11 and a lower template 12 arranged opposite to each other on a workbench 1, a concave template 2 arranged on the lower template 12, a plurality of PIN pins 3 slidably penetrated through the concave template 2 and the lower template 12 for positioning the flexible circuit board, a mounting plate 4 for mounting the PIN pins 3, and a pushing component 5 for pushing the mounting plate 4 up and down. Among them, the end surfaces of the upper template 11 and the lower template 12 close to each other are both provided with a pad 13, the punch is provided on the pad 13 on the upper template 11, the workbench 1 is provided with a lifting member 14 for pushing the upper template 11 toward the lower template 12, the upper template 11 is provided with a punch (not shown in the figure), and the workbench 1 is provided with a driving member (not shown in the figure) for pushing the punch to perform punching. Since the lifting member 14 and the driving member are both existing technologies, they are not described in detail here.

[0038] It should be noted that the automatic PIN removal pin of this embodiment can also be used in other flexible products or materials that require punching, and is not limited to the flexible circuit board mentioned in this application.

[0039] A first through hole 21 for the PIN needle 3 to pass through is formed on the upper surface of the concave template 2, a second through hole 121 for the PIN needle 3 to pass through is formed on the upper surface of the lower template 12, a through hole 131 connected to the second through hole 121 is also formed on the pad 13, a through groove 122 is formed on the side wall of the lower template 12, the pushing component 5 is built into the through groove 122, and the through groove 122 is connected to the second through hole 121.

[0040] Reference Figure 2 , Figure 3 It should be noted that the PIN needle 3 is fixedly connected to the mounting plate 4 by welding, or a socket is opened on the mounting plate, and the PIN needle 3 is inserted into the socket and is set with an interference fit between the socket, or an external thread 31 is opened on the outer peripheral wall at the lower end of the PIN needle 3, and a threaded hole 41 threadedly connected to the external thread 31 is opened on the upper surface of the mounting plate 4, so that the PIN needle 3 can be replaced. In this embodiment, an external thread 31 is opened at the lower end of the PIN needle 3, and a threaded hole 41 is opened on the mounting plate 4. Several threaded holes 41 are opened along the length direction and width direction of the upper surface of the mounting plate 4 to facilitate disassembly and replacement.

[0041] Reference Figure 1 , Figure 2In this embodiment, the pushing assembly 5 includes a cylinder 51 and a control member 52 for controlling the lifting and lowering of the piston rod of the cylinder 51. The cylinder 51 is built into the through groove 122 and is fixedly connected to the workbench 1. The axis of the piston rod of the cylinder 51 is parallel to the thickness direction of the mounting plate 4, and the piston rod of the cylinder 51 is fixedly connected to the lower surface of the mounting plate 4. It should be noted that the control member 52 includes an air inlet pipe 521 connected to the air inlet end of the cylinder 51, an air outlet pipe 522 connected to the air outlet end of the cylinder 51, and a control air pump 523 for controlling the air inlet pipe 521 and the air outlet pipe 522. It should be noted that the control air pump 523 is a foot-operated pneumatic pump. Since the foot-operated pneumatic pump is a prior art, it will not be described in detail here.

[0042] The implementation principle of an automatic PIN removal mold in an embodiment of the present application is as follows: before punching the flexible circuit board, the flexible circuit board can be placed on the concave template 2, and the pre-opened hole is aligned with the first through hole 21. At this time, the air pump 523 is controlled to supply air to the cylinder 51 to push the mounting plate 4 up and down, so as to push the PIN pin 3 to rise, and then extend to the top of the concave template 2 after penetrating the first through hole 21, and after penetrating the hole pre-opened in the product or material, the lifting member 14 is then started to push the upper template 11 above to fix the flexible circuit board below, and then it is punched by the punch. After the punching is completed, the foot controls the air pump 523 to float, so that the piston rod of the cylinder 51 retracts, thereby driving the mounting plate 4 to be lowered, so as to drive the PIN needle 3 to slide out of the pre-opened hole on the product or material, and retreat into the first perforation 21. At this time, since the product or material is fixed by the upper and lower templates 12, the straightness of the product or material can be maintained at this time, so as to reduce the possibility of warping or wrinkling of the product or material during the production process, so as to reduce the production of defective products caused by the above situation.

[0043] Embodiment 2:

[0044] Reference Figure 4 , Figure 5 , which is different from Example 1, is that, in this embodiment, the mounting plate 4 used is detachably connected to the cylinder 51, the piston rod of the cylinder 51 is fixedly connected to the fixing plate 6, the upper surface of the fixing plate 6 is provided with a slide groove 61 along its length direction, the slide groove 61 extends to the opposite side walls of the fixing plate 6, the mounting plate 4 is protrudingly provided with a sliding plate 42 slidably connected to the slide groove 61, and the fixing plate 6 is provided with a limit assembly 7 for limiting the sliding of the sliding plate 42.

[0045] Specifically, the side wall of the sliding plate 42 is provided with an installation groove 62 for installing the limiting assembly 7, the upper surface of the sliding plate 42 is provided with a third through hole 63 connected to the installation groove 62, and the lower surface of the sliding plate 42 is provided with a limiting hole 421, and a plurality of limiting holes 421 are arranged at intervals along the length direction of the sliding plate 42. The limiting assembly 7 includes a limiting rod 71 for slidingly penetrating the third through hole 63, a pushing member 72 for pushing the limiting rod 71 to move toward the limiting hole 421, and an unlocking member 73 for separating the limiting rod 71 from the limiting hole 421.

[0046] The push member 72 includes a push rod 721 that is slidably inserted into the mounting groove 62, a first spring 722 that is coaxially sleeved on the push rod 721, and a connecting plate 723 that is fixedly connected to the push rod 721 for the first spring 722 to be installed. In this embodiment, under normal conditions, the first spring 722 forces the push rod 721 to move toward the direction close to the limiting rod 71. The inner wall of the mounting groove 62 is protrudingly provided with a fixing ring 621 for the push rod 721 to slide through. The first spring 722 is arranged between the fixing ring 621 and the connecting plate 723. One end of the first spring 722 that is away from the connecting plate 723 is fixedly connected to the fixing ring 621. As for how to push the limiting rod 71 up and down, specifically, a first guide surface 711 is provided at the lower end of the limiting rod 71. The first guide surface 711 is arranged in an inclined manner, and a second guide surface 8 for abutting against the first guide surface 711 is provided on the outer peripheral wall of the push rod 721. Under the elastic force of the first spring 722 , the push rod 721 is pushed to move toward the installation slot 62 , so that under the action of the first guide surface 711 and the second guide surface 8 , the limiting rod 71 is pushed to rise.

[0047] In this embodiment, the unlocking member 73 is arranged on the connecting plate 723, and the unlocking member 73 is specifically a first connecting rope. The first connecting rope is fixedly connected to the end surface of the connecting plate 723 away from the first spring 722, and the first connecting rope is exposed in the mounting groove 62. In order to drive the limiting rod 71 to slide out of the limiting hole 421, a second connecting rope 712 is connected between the limiting rod 71 and the pushing rod 721 to reduce the possibility that the limiting rod 71 falls without being affected by its own gravity when the pushing rod 721 moves in a direction away from the mounting groove 62.

[0048] Furthermore, since the cylinder 51 is arranged inside the through groove 122, it is not convenient to push the mounting plate 4 to slide. Therefore, in order to facilitate the sliding of the mounting plate 4, a pulling rod (not shown in the figure) or a pulling rope (not shown in the figure) is provided on the mounting plate 4, which is set according to needs.

[0049] Embodiment 3:

[0050] Reference Figure 6, which is different from the second embodiment, in this embodiment, the third through hole 63 is arranged in an arc shape, and correspondingly, the limit rod 71 is also arranged in an arc shape, and the push member 72 includes a push block 724 hinged to the limit rod 71 and a second spring 725 fixedly connected to the push block 724. In this embodiment, the inner wall of the installation groove 62 also protrudes and is fixed with a fixing ring 621 for installing the second spring 725. Under normal conditions, the second spring 725 forces the push block 724 to move in a direction close to the limit rod 71. At this time, the unlocking member 73 is arranged on the push block 724, that is, the first connecting rope is passed through the second spring 725 and is fixedly connected to the push block 724.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic PIN removal mold, characterized by: The invention comprises a plurality of PIN pins (3) which are slidably arranged on a concave template (2) and a lower template (12) for positioning, a mounting plate (4) for mounting the PIN pins (3), and a pushing component (5) for pushing the mounting plate (4) up and down, wherein the upper surface of the concave template (2) is provided with a first through hole (21) for the PIN pins (3) to penetrate, the side wall of the lower template (12) is provided with a through groove (122), the pushing component (5) is built in the through groove (122), the upper surface of the lower template (12) is provided with a second through hole (121) for the PIN pins (3) to penetrate, and the second through hole (121) is connected to the through groove (122).

2. The automatic PIN removal mold according to claim 1, characterized in that: An outer peripheral wall at the lower end of the PIN needle (3) is provided with an external thread (31), and an upper surface of the mounting plate (4) is provided with a threaded hole (41) threadably connected to the external thread (31).

3. The automatic PIN removal mold according to claim 2, characterized in that: The upper surface of the mounting plate (4) is provided with a plurality of threaded holes (41) along its length direction and width direction.

4. The automatic PIN removal mold according to claim 3, characterized in that: The pushing assembly (5) comprises a cylinder (51), the mounting plate (4) is detachably connected to the cylinder (51), the piston rod of the cylinder (51) is fixedly connected to a fixing plate (6), a sliding groove (61) is provided on the upper surface of the fixing plate (6) along its length direction, the mounting plate (4) is protrudingly provided with a sliding plate (42) slidably connected to the sliding groove (61), and the fixing plate (6) is provided with a limit assembly (7) for limiting the sliding of the sliding plate (42).

5. The automatic PIN removal mold according to claim 4, characterized in that: The side wall of the sliding plate (42) is provided with an installation groove (62) for installing the limit assembly (7), the upper surface of the sliding plate (42) is provided with a third through hole (63) connected to the installation groove (62), the lower surface of the sliding plate (42) is provided with a limit hole (421), and a plurality of the limit holes (421) are arranged at intervals along the length direction of the sliding plate (42), and the limit assembly (7) includes a limit rod (71) for slidingly passing through the third through hole (63), a pushing member (72) for pushing the limit rod (71) to move toward the limit hole (421), and an unlocking member (73) for disengaging the limit rod (71) from the limit hole (421).

6. The automatic PIN removal mold according to claim 5, characterized in that: The pushing member (72) comprises a pushing rod (721) slidably inserted into the mounting groove (62), a first spring (722) coaxially sleeved on the pushing rod (721), and a connecting plate (723) fixedly connected to the pushing rod (721) for mounting the first spring (722), wherein the first spring (722) forces the pushing rod (721) to move in a direction close to the limiting rod (71), and one end of the first spring (722) away from the connecting plate (723) is fixedly connected to the inner wall of the mounting groove (62); a first guide surface (711) is provided at the lower end of the limiting rod (71), and a second guide surface (8) for abutting against the first guide surface (711) is provided on the outer peripheral wall of the pushing rod (721), and the unlocking member (73) is arranged on the connecting plate (723).

7. The automatic PIN removal mold according to claim 5, characterized in that: The third through hole (63) is arranged in an arc shape, the limiting rod (71) is also arranged in an arc shape, the pushing member (72) comprises a pushing block (724) hinged to the limiting rod (71) and a second spring (725) fixedly connected to the pushing block (724), the second spring (725) forces the pushing block (724) to move in a direction close to the limiting rod (71), one end of the second spring (725) away from the pushing block (724) is fixedly connected to the inner wall of the mounting groove (62), and the unlocking member (73) is arranged on the pushing block (724).

8. The automatic PIN removal mold according to claim 6 or 7, characterized in that: The unlocking member (73) is a first connecting rope, and the first connecting rope is exposed outside the installation groove (62).

9. The automatic PIN removal mold according to claim 6, characterized in that: The mounting plate (4) is provided with a pulling rod or a pulling rope.

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