FPC terminal riveting die

Abstract

The utility model discloses an FPC terminal riveting die, which comprises an upper die and a lower die, the upper die comprises an upper backing plate and a fixed plate, the lower die comprises a lower backing plate, a female die plate and a stripper plate which are sequentially arranged from bottom to top, the female die plate and the stripper plate are movably arranged relative to the lower backing plate, an ejector block is fixed on the lower backing plate, one end of the ejector block penetrates through the female die plate and extends to the surface of the female die plate, and the other end of the ejector block is fixed on the fixed plate. A through groove used for riveting and matched with the top end of the top block is formed in the discharging plate, a riveting station is arranged on the upper surface of the through groove, an FPC board is arranged on the discharging plate, a terminal material belt is arranged on the female die plate, an insert is arranged in the fixing plate, a riveting groove corresponding to the top plate in position is formed in the lower surface of the insert, and the interior of the riveting groove is of a fillet structure. The feeding end of the female die plate is further provided with a pneumatic material stirring mechanism. According to the utility model, semi-automation is adopted, the positioning, cutting and riveting processes of the terminal are simultaneously completed through the riveting die, and the production efficiency is improved; and meanwhile, the tips of the terminals are firmly fastened on the FPC board through the riveting grooves, so that the terminals are prevented from falling off.

Description

Technical Field

[0001] The utility model relates to the technical field of terminal riveting, in particular to an FPC terminal riveting mould. Background Art

[0002] FPC board, also known as "flexible circuit board", is one of the circuit boards belonging to PCB printed circuit boards. It is a printed circuit board made of insulating materials as the base material, such as polyimide or polyester film, and then made through special processes. The wiring density of this circuit board is generally higher, but the weight is relatively light, the thickness is relatively thin, and it has good flexibility and good bending performance. Generally, the circuit connection end of the FPC is connected to a metal terminal to achieve fast circuit connection. The way to connect the metal terminal to the FPC usually includes welding and riveting. Among them, the welding method requires external media such as solder paste during operation, the cost is higher, and pollution will be generated during welding, and more energy is consumed. Compared with welding, riveting is easier to operate and has higher connection stability. Therefore, the riveting method is more and more widely used in connecting FPC with metal terminals.

[0003] During the riveting process, the terminal needs to be placed on a specific device for positioning and cutting, and then the connection on the FPC board is aligned with the terminal tip and pressed down. The structure of the terminal strip and the FPC board is as shown in the attached figure. Figure 1 and attached Figure 2 As shown, the terminal tip passes through the FPC board and is buckled on the FPC board to complete the connection. However, in the existing riveting device, the riveting effect is poor and the terminal falls off. It is even necessary to manually check each part or further process the riveting of the FPC board and the terminal multiple times to improve the stability. The whole process is cumbersome and inefficient. The existing terminal riveting machine can no longer meet the riveting needs. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide an FPC terminal riveting die to solve the above problems.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A FPC terminal riveting mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper pad and a fixed plate, and the lower mold comprises a lower pad arranged in sequence from bottom to top, a concave mold plate and a stripper plate movably arranged relative to the lower pad, a top block is fixed to the lower pad, one end of the top block passes through the concave mold plate and extends to the surface of the concave mold plate, a through groove for riveting and cooperating with the top of the top block is provided on the stripper plate, the upper surface of the through groove is a riveting station, the FPC board is placed on the stripper plate, the terminal strip is placed on the concave mold plate, an insert is provided in the fixed plate, a riveting groove corresponding to the position of the top plate is provided on the lower surface of the insert, a chamfered structure is adopted inside the riveting groove, and a pneumatic material stripping mechanism is also provided on the feeding end of the concave mold plate.

[0007] In the above utility model, further, a plurality of guide columns are fixed on the lower pad, one end of the guide column passes through the concave mold plate and the unloading plate in sequence, and a spring 1 is provided between the lower pad and the concave mold plate, and a spring 2 is provided between the concave mold plate and the unloading plate.

[0008] In the above utility model, further, the concave mold plate is provided with a transmission track for placing the terminal strip, and the pneumatic material shifting mechanism is placed at the feeding end of the transmission track.

[0009] In the above-mentioned utility model, further, the pneumatic material shifting mechanism includes a support plate, a driving cylinder fixed on the support plate, and a guide block connected to the output end of the driving cylinder. The guide block is slidably connected to the support plate through a guide rail on the support plate. A shifting block is movably installed at the bottom of the guide block. Guide holes are provided on both sides of the terminal material strip. The shifting block is inserted into the guide hole and the guide block is driven to move by the driving cylinder, thereby driving the terminal material strip to move along the length direction.

[0010] In the above utility model, further, the lower pad is fixed with at least two positioning pins extending to the upper surface of the stripper plate, the FPC board is provided with positioning holes at the positions to be riveted, and the FPC board is fixed to the surface of the stripper plate through the cooperation between the positioning holes and the positioning pins.

[0011] In the above utility model, further, a guide pin arranged downward and matched with the guide hole is fixed on the unloading plate.

[0012] In the above utility model, further, a plurality of clearance grooves are provided on the lower surface of the stripping plate along the feeding end of the transmission track, and the clearance grooves correspond one by one to the terminal arrangement positions on the terminal strip.

[0013] In the above utility model, further, the upper surface of the stripper plate is also provided with a clamping assembly for clamping the FPC board.

[0014] The beneficial effects of the utility model are:

[0015] The utility model adopts semi-automatic method, and the terminal material strip is continuously and orderly conveyed to the riveting die through the pneumatic material feeding mechanism. The staff manually places the FPC board on the unloading plate, and the positioning, cutting and riveting process of the terminal are completed simultaneously through the riveting die, thereby improving the production efficiency. At the same time, the riveting groove makes the tip of the terminal pass through the FPC board when the die is closed, then bends inward and is firmly fastened to the FPC board, thereby preventing the terminal from falling off, improving the connection stability between the FPC board and the terminal, and ensuring the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the three-view drawing of the terminal structure;

[0017] Figure 2 This is a schematic diagram of the FPC board;

[0018] Figure 3 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 4 This is a front view of the utility model when the mold is opened;

[0020] Figure 5 It is a partial enlarged view of the utility model A;

[0021] Figure 6 for Figure 4 Left view in;

[0022] Figure 7 It is a partial enlarged view of C of the utility model;

[0023] Figure 8 This is a front view of the utility model when the mold is closed;

[0024] Fig. 9 It is a partial enlarged view of the utility model B;

[0025] Fig.10 for Figure 8 Left view of

[0026] Fig.11 It is a partial enlarged view of D of the utility model;

[0027] Fig.12 It is a partial enlarged view of the utility model E;

[0028] Fig.13 for Figure 6 Sectional view of AA.

[0029] In the figure, 1-upper pad, 2-fixed plate, 3-unloading plate, 4-concave template, 5-lower pad, 6-insert, 61-riveting groove, 7-top block, 8-through groove, 9-pneumatic material shifting mechanism, 91-support plate, 92-driving cylinder, 93-guide block, 94-shift block, 10-guide column, 11-spring 1, 12-spring 2, 13-transmission track, 14-positioning pin, 15-guide pin, 16-allowance groove, 17-clamping assembly, 18-terminal strip, 181-guide hole, 19-FPC board, 191-positioning hole. DETAILED DESCRIPTION

[0030] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0031] Please see attached Figure 1-2 As shown, in this embodiment, the terminals on the terminal strip 18 need to be riveted to the positions to be riveted on the FPC board 19 through the riveting mold, and guide holes 181 for feeding and guiding are provided on both sides of the terminal strip 18, and positioning holes 191 for fixing on the stripper plate 3 are provided at the positions to be riveted on the FPC board 19.

[0032] Please see attached Figure 3-7 As shown, an FPC terminal riveting mold comprises an upper mold and a lower mold, wherein the upper mold comprises an upper pad 1 and a fixed plate 2, the upper pad 1 and the fixed plate 2 are fixedly connected and driven to move up and down together by a cylinder, and the lower mold comprises a lower pad 5 arranged sequentially from bottom to top, and a concave mold plate 4 and a stripper plate 3 movably arranged relative to the lower pad 5, wherein a spring 11 is arranged between the lower pad 5 and the concave mold plate 4, and a spring 2 12 is arranged between the concave mold plate 4 and the stripper plate 3, under the action of the spring 2 12, a gap is provided between the concave mold plate 4 and the stripper plate 3, a terminal strip 18 is placed on the concave mold plate 4, an FPC board 19 is placed on the stripper plate 3, and a plurality of guide posts 10 are fixed on the lower pad 5, one end of the guide post 10 passes through the concave mold plate 4 and the stripper plate 3 in sequence, and the concave mold plate 4 and the stripper plate 3 can move downward along the guide post 10 to gradually compress the spring 11 and the spring 2 12;

[0033] A top block 7 is fixed on the lower pad 5, and the shape of the upper surface of the top block 7 matches the shape of the bottom of the terminal. One end of the top block 7 passes through the concave template 4 and extends to the surface of the concave template 4. A through groove 8 for riveting and matching with the top of the top block 7 is provided on the stripper plate 3. The terminal to be riveted is located above the through groove 8. The upper surface of the through groove 8 is a riveting station. An insert 6 is provided in the fixed plate 2. A riveting groove 61 corresponding to the position of the top plate is provided on the lower surface of the insert 6. The inside of the riveting groove 61 adopts a rounded structure. Specifically, when the mold is closed, the upper mold moves downward and drives the stripper plate 3 and the concave template 4 to move downward together until the mold is completely closed. At this time, the top block 7 passes through the through groove 8 to push the terminal upward and pass through the FPC board 19. At this time, the tip of the terminal enters the riveting groove 61 to complete the riveting;

[0034] The feeding end of the concave mold plate 4 is also provided with a pneumatic material-displacing mechanism 9, and the concave mold plate 4 is provided with a transmission track 13 for placing the terminal material strip 18, as shown in the attached Fig.13 As shown, the terminal strip 18 can only move along the transmission track 13 through the pneumatic material shifting mechanism 9 to prevent the terminal strip 18 from deviating. The pneumatic material shifting mechanism 9 is placed at the feeding end of the transmission track 13 .

[0035] For details, please refer to the attached Figure 1 As shown, the pneumatic material shifting mechanism 9 includes a support plate 91, a driving cylinder 92 fixed on the support plate 91, and a guide block 93 connected to the output end of the driving cylinder 92. The support plate 91 is vertically fixed on the transmission track 13 to facilitate the fixing of the driving cylinder 92 and the guide block 93. The guide block 93 is slidably connected to the support plate 91 through a guide rail (not shown in the accompanying drawings) on the support plate 91. The driving cylinder 92 drives the guide block 93 to slide back and forth along the length direction of the guide rail. A shifting block 94 is movably installed at the bottom of the guide block 93. Guide holes 181 are provided on both sides of the terminal strip 18. During specific operation, the shifting block 94 is inserted into the guide hole 181 and the guide block 93 is driven to move by the driving cylinder 92, thereby driving the terminal strip 18 to move along the length direction. Every two terminals are a material shifting step.

[0036] Please see attached Figure 4 As shown, at least two positioning pins 14 extending to the upper surface of the stripper plate 3 are fixed on the lower pad 5, and positioning holes 191 are provided on the FPC board 19 at the positions to be riveted. The FPC board 19 is placed on the surface of the stripper plate 3 and the positioning holes 191 are aligned with the positions of the positioning pins 14. The FPC board 19 is pressed so that it is fixed to the surface of the stripper plate 3 through the cooperation between the positioning holes 191 and the positioning pins 14.

[0037] Similarly, the unloading plate 3 is fixed with a guide pin 15 arranged downward and cooperating with the guide hole 181. When the mold is closed, the unloading plate 3 moves downward under the action of the upper mold and is pressed against the concave mold plate 4. At the same time, the guide pin 15 is inserted into the guide hole 181 on the terminal strip 18 to fix the terminal strip 18.

[0038] In the above embodiment, preferably, please participate in the attached Figure 6-7 As shown, the terminal strip 18 is placed on the surface of the concave mold plate 4. When the mold is closed, the stripper plate 3 is pressed against the surface of the concave mold plate 4, and the terminals on the riveting station enter the through groove 8 under the action of the top block 7. In order to prevent other terminals on the segment strip from being crushed by the stripper plate 3, a plurality of clearance grooves 16 are provided on the lower surface of the stripper plate 3 along the feeding end of the transmission track 13. The clearance grooves 16 correspond one-to-one to the terminal arrangement positions on the terminal strip 18. When the closed mold is riveted, the terminals other than those on the riveting station are placed one-to-one under the clearance grooves 16.

[0039] To further fix the FPC board 19, as shown in the attached Figure 3 or attached Figure 6 As shown, a clamping assembly 17 for clamping the FPC board 19 is also provided on the upper surface of the stripper plate 3. The clamping assembly 17 is a relatively conventional shaft clamp assembly and will not be described in detail in this embodiment.

[0040] Specific working process:

[0041] In the mold opening state, refer to the attached Figure 4-7 As shown, there is a certain gap between the concave plate 4 and the lower pad 5 under the action of the spring 2 12, and there is also a certain gap between the stripper plate 3 and the concave plate 4 under the action of the spring 11. The gap is used to convey the terminal strip 18. The terminal strip 18 is first placed in the transmission track 13, and then the FPC board 19 is manually fixed on the upper surface of the stripper plate 3 through the positioning hole 191, and then the FPC board 19 is further fixed by the clamping assembly 17, and then the mold and the pneumatic material stripping mechanism 9 are started;

[0042] When closing the mold, if attached Figure 8-12As shown, the upper die gradually moves downward under the drive of the cylinder, and the upper die abuts against the surface of the stripper plate 3 and drives the stripper plate 3 to press down the concave die plate 4 until the concave die plate 4 contacts the lower pad 5. During this process, the top block 7 cooperates with the through groove 8 on the stripper plate 3 to cut off the terminal on the riveting station from the terminal strip 18 and drives the terminal to be riveted into the through groove 8. At the same time, the guide pin 15 on the lower surface of the stripper plate 3 penetrates into the guide hole 181 on the terminal strip 18 to position the terminal strip 18; then the stripper is unloaded. Under the action of the upper die, the plate 3 and the concave die plate 4 continue to move downward to compress the spring 2 12 until the lower surface of the concave die plate 4 contacts the lower pad 5. At this time, the top block 7 passes through the through slot 8 to push the terminal upward and pass through the FPC board 19. At this time, the tip of the terminal enters the rivet groove 61 and bends inward along the guide radius of the rivet groove 61 and buckles on the FPC board 19. The terminal is firmly fastened to the FPC board 19 to prevent the terminal from falling off, thereby improving the connection stability between the FPC board 19 and the terminal, and ensuring product quality.

[0043] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0044] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A FPC terminal riveting die, comprising an upper die and a lower die, characterized in that: The upper die comprises an upper pad (1) and a fixed plate (2); the lower die comprises a lower pad (5) arranged in sequence from bottom to top, a concave mold plate (4) and a stripper plate (3) movably arranged relative to the lower pad (5); a top block (7) is fixed on the lower pad (5); one end of the top block (7) passes through the concave mold plate (4) and extends to the surface of the concave mold plate (4); a through groove (8) for riveting and cooperating with the top end of the top block (7) is provided on the stripper plate (3); the upper surface of the through groove (8) is a riveting station; the FPC board (19) is placed on the stripper plate (3); the terminal strip (18) is placed on the concave mold plate (4); an insert (6) is provided in the fixed plate (2); a rivet groove (61) corresponding to the position of the top plate is provided on the lower surface of the insert (6); the inside of the rivet groove (61) adopts a rounded structure; and a pneumatic material removal mechanism (9) is also provided on the feeding end of the concave mold plate (4).

2. The FPC terminal riveting mold according to claim 1, characterized in that: A plurality of guide columns (10) are fixed on the lower pad (5), one end of each guide column (10) passes through the concave mold plate (4) and the unloading plate (3) in sequence, and a spring 1 (11) is provided between the lower pad (5) and the concave mold plate (4), and a spring 2 (12) is provided between the concave mold plate (4) and the unloading plate (3).

3. The FPC terminal riveting mold according to claim 2, characterized in that: The concave mold plate (4) is provided with a transmission track (13) for placing the terminal material strip (18), and the pneumatic material shifting mechanism (9) is placed at the feeding end of the transmission track (13).

4. The FPC terminal riveting mold according to claim 3, characterized in that: The pneumatic material shifting mechanism (9) comprises a support plate (91), a driving cylinder (92) fixed on the support plate (91), and a guide block (93) connected to the output end of the driving cylinder (92); the guide block is slidably connected to the support plate (91) via a guide rail on the support plate (91); a shifting block (94) is movably mounted at the bottom of the guide block (93); guide holes (181) are provided on both sides of the terminal strip (18); the shifting block (94) is inserted into the guide hole (181) and drives the guide block (93) to move through the driving cylinder (92), thereby driving the terminal strip (18) to move along the length direction.

5. The FPC terminal riveting mold according to claim 2, characterized in that: At least two positioning pins (14) extending to the upper surface of the stripper plate (3) are fixed on the lower pad (5); a positioning hole (191) is provided on the FPC board (19) at a position to be riveted; the FPC board (19) is fixed to the surface of the stripper plate (3) through the cooperation between the positioning hole (191) and the positioning pins (14).

6. The FPC terminal riveting mold according to claim 2, characterized in that: A guide pin (15) arranged downward and cooperating with the guide hole (181) is fixed on the discharge plate (3).

7. The FPC terminal riveting mold according to claim 6, characterized in that: The lower surface of the stripping plate (3) is provided with a plurality of clearance grooves (16) along the feeding end of the transmission track (13), and the clearance grooves (16) correspond one-to-one to the terminal arrangement positions on the terminal material strip (18).

8. The FPC terminal riveting die according to claim 7, characterized in that: The upper surface of the stripping plate (3) is also provided with a clamping assembly (17) for clamping the FPC board (19).

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