FPC continuous stamping die

Abstract

The present application relates to the technical field of punch dies, and particularly relates to a FPC continuous punch die, which comprises an upper die base and a lower die base, the upper die base and the lower die base are slidably connected through guide columns, the upper die base is sequentially provided with a positioning hole punching unit, a window opening punching unit and a bending unit along a multilayer FPC feeding direction, during use, the positioning hole punching, window opening and bending three core processes of the multilayer FPC can be completed at one time through the cooperation of the movable assembly and the elastic assembly, the workpiece does not need to be transferred for multiple times, the sequential punching actions of the punching units are realized, the mutual interference between the processes is avoided, and the punching action is accurately controllable; meanwhile, the vacuum suction plate arranged on the lower die base can uniformly adsorb and fix the multilayer FPC, compared with the traditional mechanical clamping mode, the problems such as warping, displacement and interlayer separation of the multilayer FPC during the punching process can be effectively avoided, and the machining precision of each process is ensured.

Description

Technical Field

[0001] This invention relates to the field of stamping die technology, and more particularly to an FPC continuous stamping die. Background Technology

[0002] Stamping is a key process in FPC production, mainly used to realize forming operations such as positioning hole processing, window opening, and bending. It directly determines the dimensional accuracy, appearance quality and subsequent assembly performance of FPC. At present, FPC stamping is mostly processed in steps using single-operation dies, that is, the corresponding processes are completed in sequence through positioning hole stamping dies, window opening stamping dies, and bending dies.

[0003] For example, Chinese patent application number CN201920814855.6 discloses a continuous stamping die for FPC, including an upper die base and a lower die base, which are connected by guide pillars. A hydraulic cylinder is installed above the upper die base, passing through the upper die base and extending below it. An upper pad is fixedly connected below the hydraulic cylinder, and an upper stamping template is bolted below the upper pad. This can double the FPC production capacity, reduce enterprise production costs, improve the processing accuracy of FPC, increase production efficiency, and extend the service life of FPC dies. However, it is only suitable for stamping single-layer FPCs and cannot adapt to the layered stress requirements of multi-layer FPCs. During the stamping process of multi-layer FPCs, interlayer separation is prone to occur, especially in the bending stage, where waste chips often adhere to the bending unit, leading to problems such as angle deviation and edge burrs, which cannot meet the processing quality requirements of multi-layer FPCs. Summary of the Invention

[0004] In view of this, the purpose of this invention is to propose a continuous stamping die for FPC to solve the technical problem that the existing technology is only applicable to the stamping process of single-layer FPC and is difficult to adapt to the layered stress requirements of multi-layer FPC. In the stamping process of multi-layer FPC, interlayer separation is prone to occur, especially in the bending stage, where waste chips often adhere to the bending unit, resulting in problems such as angle deviation and edge burrs, which cannot meet the processing quality requirements of multi-layer FPC.

[0005] To achieve the above objectives, the present invention provides a continuous stamping die for FPC, comprising an upper die base and a lower die base, wherein the upper die base and the lower die base are slidably coupled via guide posts. The upper die base is sequentially provided with a positioning hole stamping unit, a window stamping unit, and a bending unit along the multi-layer FPC feeding direction. The continuous stamping die further includes: Movable components are respectively connected to the positioning hole stamping unit, the window stamping unit, and the bending unit. Each movable component is provided with an elastic component between itself and the upper die base. The elastic coefficients of the elastic components of the positioning hole stamping unit, the window stamping unit, and the bending unit increase sequentially, so that each unit is triggered sequentially when the upper die base moves downward. The multi-layer FPC is subjected to a sequential and continuous stamping action through the cooperation of the active and flexible components. A vacuum adsorption plate is provided on the upper surface of the lower mold base, and the vacuum adsorption plate corresponds to a multilayer FPC. A cleaning mechanism for blowing away debris attached to the bending unit.

[0006] Furthermore, the movable components include a positioning hole movable punch, a window opening movable punch, and a bending movable punch. The three components are structurally compatible and correspond to the fixed positioning hole stamping unit, the window opening stamping unit, and the bending unit, respectively. Three independent receiving cavities are provided below the upper die base. The positioning hole movable punch, the window opening movable punch, and the bending movable punch are slidably installed in the corresponding receiving cavities through guide posts, and the elastic component is provided between the top surface of the receiving cavity and each movable punch.

[0007] Furthermore, the elastic component includes a first elastic element, a second elastic element, and a third elastic element, all located at the lower end of the upper mold base. The elastic coefficients of the first, second, and third elastic elements increase sequentially. The bottom ends of the positioning hole stamping unit, the window stamping unit, and the bending unit increase sequentially relative to the initial height of the vacuum adsorption plate. In conjunction with the elastic elements with increasing elastic coefficients, each unit contacts and acts on the multilayer FPC sequentially when the upper mold base moves downward.

[0008] Furthermore, the vacuum adsorption plate has independent adsorption holes on the surface of the multilayer FPC, and each adsorption hole is connected to the vacuum generator through a sealed gas pipe.

[0009] Furthermore, the positioning hole punching unit includes: A positioning punch is fixedly disposed on the lower surface of the movable punch seat of the positioning hole; A positioning die is formed at the corresponding position of the vacuum adsorption plate; A positioning guide sleeve is fitted on the outside of the positioning punch. The positioning guide sleeve is slidably fitted on the outside of the positioning punch. The top end of the positioning guide sleeve is connected to the movable punch seat of the positioning hole through a stripping spring, and the bottom end is used to press the multi-layer FPC before the punch contacts the workpiece.

[0010] Furthermore, the top of the positioning punch is provided with a rounded corner transition structure, and the inner wall of the positioning die is provided with an elastic buffer ring, which is made of silicone.

[0011] Furthermore, the window opening punching unit includes a window opening punch fixedly disposed on the lower surface of the window opening movable punch seat and a window opening die opened at the corresponding position of the vacuum adsorption plate. The cutting edge of the window opening punch adopts a gradient design, and the thickness of the cutting edge gradually decreases from the root to the top.

[0012] Furthermore, the bending unit includes: A bending punch is fixedly disposed on the lower surface of the bending movable punch, and the bending surface of the bending punch is provided with a fluororubber buffer layer. A bending die is formed at the corresponding position of the vacuum adsorption plate.

[0013] Furthermore, the cleaning mechanism includes: Mounting seats fixedly disposed on both sides of the upper mold base; An air pump is mounted on the mounting base; An air guide head connected at one end to the air pump; The other end of the air guide head is connected to an air nozzle, which is set to correspond to the bending punch of the bending unit.

[0014] Furthermore, the air pump is slidably mounted on the mounting base, and a push rod is also slidably mounted on the mounting base. The lower end of the push rod passes through the mounting base, and the upper end of the push rod abuts against the bottom end of the air pump.

[0015] The beneficial effects of this invention are as follows: In use, through the cooperation of the movable component and the elastic component, the three core processes of positioning hole stamping, window opening, and bending of multi-layer FPC can be completed in one go without the need for multiple workpiece transfers. This enables the sequential stamping actions of each stamping unit, avoids mutual interference between processes, and ensures precise and controllable stamping actions. At the same time, the vacuum adsorption plate set on the lower die base can uniformly adsorb and fix the multi-layer FPC. Compared with the traditional mechanical clamping method, it can effectively avoid problems such as warping, displacement, and interlayer separation of multi-layer FPC during the stamping process, ensuring the processing accuracy of each process. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the assembly of the upper mold base in this invention; Figure 3 This is a schematic diagram of the assembly of the upper mold base and the movable components in this invention; Figure 4 This is an assembly diagram of the cleaning mechanism in this invention; Figure 5 This is an assembly diagram of the lower mold base in this invention; Figure 6 This is a schematic diagram of the assembly of the upper die base and the positioning hole stamping unit in this invention; Figure 7 This is a schematic diagram of the assembly of the lower die base and the positioning hole stamping unit in this invention; Figure 8 This is a schematic diagram of the assembly of the upper mold base and the movable punch for opening the window in this invention; Figure 9 This is a schematic diagram of the assembly of the lower die base and the movable punch for opening the window in this invention; Figure 10 This is a schematic diagram of the assembly of the upper mold base and the bending unit in this invention; Figure 11 This is a schematic diagram of the assembly of the lower die base and the bending unit in this invention.

[0018] The diagram is marked as follows: 1. Upper die base; 2. Lower die base; 3. Guide post; 4. Positioning hole stamping unit; 5. Window opening stamping unit; 6. Bending unit; 7. Vacuum adsorption plate; 8. Positioning hole movable punch; 9. Window opening movable punch; 10. Bending movable punch; 11. First elastic element; 12. Second elastic element; 13. Third elastic element; 14. Adsorption hole; 15. Positioning punch; 16. Positioning die; 17. Positioning guide sleeve; 18. Window opening punch; 19. Window opening die; 20. Bending punch; 21. Bending die; 22. Mounting base; 23. Air pump; 24. Air guide head; 25. Air nozzle; 26. Ejector rod. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical or scientific terms used in this invention should have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] In a first aspect, the present invention provides an FPC progressive stamping die, such as Figure 1-11 As shown, the die includes an upper die base 1 and a lower die base 2, which are slidably connected by guide posts 3. The upper die base 1 is provided with a positioning hole stamping unit 4, a window stamping unit 5, and a bending unit 6 in sequence along the multi-layer FPC feeding direction. The continuous stamping die also includes: The movable components are respectively connected to the positioning hole stamping unit 4, the window stamping unit 5 and the bending unit 6. Each movable component is provided with an elastic component between itself and the upper die base 1. The elastic coefficients of the elastic components of the positioning hole stamping unit 4, the window stamping unit 5 and the bending unit 6 increase sequentially, so that each unit is triggered sequentially when the upper die base 1 moves downward. The multi-layer FPC is subjected to a sequential and continuous stamping action through the cooperation of the active and flexible components. A vacuum adsorption plate 7 is provided on the upper surface of the lower mold base 2, and the vacuum adsorption plate 7 corresponds to a multilayer FPC; A cleaning mechanism for blowing away waste debris attached to the bending unit 6.

[0022] In this embodiment, during use, the multi-layer FPC is first placed on the vacuum adsorption plate 7 according to the feeding direction. The vacuum generator is then activated to generate a vacuum adsorption force, which tightly fixes the multi-layer FPC to the surface of the vacuum adsorption plate 7, ensuring that the multi-layer FPC is flat and without displacement. Subsequently, under the action of the external punching force, the upper die base 1 slides downward along the guide post 3, driving the positioning hole punching unit 4, the window punching unit 5, and the bending unit 6 to move downward synchronously. Due to the action of the elastic component, during the downward movement, the positioning hole movable punch 8 and the positioning punch 15 are driven downward, thus completing the positioning of the multi-layer FPC. The process begins with a hole punching process. Then, as the upper die holder 1 continues to move downwards, the window punching process of the multi-layer FPC is completed. Finally, as the upper die holder 1 moves further downwards, the bending process of the multi-layer FPC is completed. After the bending process is completed, the upper die holder 1 returns to its original position along the guide post 3. The cleaning mechanism is then activated to generate high-pressure gas, which thoroughly blows away the waste debris attached during the bending process, preventing the waste debris from affecting subsequent punching processes. Finally, the vacuum generator stops working, the adsorption force disappears, and the processed multi-layer FPC is taken out, completing one continuous punching process. By repeating the above steps, the large-scale continuous processing of multi-layer FPCs can be achieved. By combining the movable and elastic components, the three core processes of positioning hole stamping, window opening, and bending of multi-layer FPC can be completed in one go, without the need for multiple workpiece transfers. This enables the sequential stamping actions of each stamping unit, avoids mutual interference between processes, and ensures precise and controllable stamping actions. At the same time, the vacuum adsorption plate 7 set on the lower die base 2 can uniformly adsorb and fix the multi-layer FPC. Compared with the traditional mechanical clamping method, it can effectively avoid problems such as warping, displacement, and interlayer separation of multi-layer FPC during the stamping process, ensuring the processing accuracy of each process.

[0023] In this embodiment, as Figure 3 As shown, the movable components include a positioning hole movable punch 8, a window-opening movable punch 9, and a bending movable punch 10. The three components are structurally compatible and respectively correspond to the fixed positioning hole stamping unit 4, the window-opening stamping unit 5, and the bending unit 6. The upper die base 1 has three independent receiving cavities below it. The positioning hole movable punch 8, the window-opening movable punch 9, and the bending movable punch 10 are slidably installed in their respective receiving cavities through guide pillars. The elastic component is located between the top surface of the receiving cavity and each movable punch, which enables the independent installation, disassembly, and adjustment of each stamping unit. When a stamping unit malfunctions or needs to be replaced, it is not necessary to disassemble the entire die; only the corresponding movable punch needs to be disassembled. This greatly improves the convenience of die assembly and maintenance, reduces maintenance difficulty and time, and provides a stable installation foundation for the positioning hole stamping, window-opening stamping, and bending processes, ensuring that each stamping unit will not deform or shift during operation, guaranteeing the independence and stability of the stamping action, avoiding stamping deviations caused by deformation of the movable components, and further improving processing accuracy.

[0024] In this embodiment, as Figure 6 As shown, the elastic component includes a first elastic element 11, a second elastic element 12, and a third elastic element 13, all located at the lower end of the upper mold base 1. The elastic coefficients of the first elastic element 11, the second elastic element 12, and the third elastic element 13 increase sequentially. The initial heights of the bottom ends of the positioning hole stamping unit 4, the window stamping unit 5, and the bending unit 6 relative to the vacuum adsorption plate 7 increase sequentially. Combined with the increasing elastic coefficients of the elastic elements, each unit contacts and acts on the multilayer FPC sequentially when the upper mold base 1 descends. When the upper mold base 1 descends, because the initial height of the positioning hole stamping unit 4 is the lowest, the corresponding elastic element... The component with the lowest elasticity coefficient contacts the FPC first and completes the positioning hole stamping. As the upper die holder 1 continues to descend, the window opening stamping unit 5, with its initial height and elasticity coefficient at the center, begins to trigger and completes the window opening. Finally, the bending unit 6, with its initial height and elasticity coefficient at the highest, begins to trigger and completes the bending. This ensures that each process proceeds in an orderly manner without interfering with each other. The stamping force of each stamping unit gradually increases, avoiding damage to the mold caused by excessive instantaneous impact force. At the same time, the elastic component can buffer the impact force during the stamping process and reduce the wear between each moving punch, stamping unit, and vacuum adsorption plate 7.

[0025] In this embodiment, as Figure 7 As shown, the vacuum adsorption plate 7 has independent adsorption holes 14 on the surface of the multi-layer FPC. Each adsorption hole 14 is connected to the vacuum generator through a sealed air pipe, which can generate a uniform adsorption force that acts on the entire surface of the multi-layer FPC. This ensures that the multi-layer FPC is tightly attached to the vacuum adsorption plate 7, avoiding local warping or displacement of the multi-layer FPC. In particular, it can ensure tight bonding between the layers of the multi-layer FPC, prevent separation between layers during the stamping process, and greatly improve positioning accuracy and processing consistency.

[0026] In this embodiment, as Figure 6 , Figure 7 As shown, the positioning hole stamping unit 4 includes: A positioning punch 15 is fixedly installed on the lower surface of the movable punch seat 8 in the positioning hole; A positioning die 16 is formed at the corresponding position of the vacuum adsorption plate 7; A positioning guide sleeve 17 is sleeved on the outside of the positioning punch 15. The positioning guide sleeve 17 is slidably sleeved on the outside of the positioning punch 15, and the top end of the positioning guide sleeve 17 is connected to the positioning hole movable punch seat 8 through a stripping spring. The bottom end is used to press the multi-layer FPC before the punch contacts the workpiece. It can play a precise guiding role in the up and down movement of the positioning punch 15, avoid the positioning punch 15 from shifting or tilting during the stamping process, ensure the hole diameter accuracy and roundness of the positioning hole, reduce the size error of the positioning hole, and provide a reliable guarantee for the accurate positioning of subsequent window opening and bending processes. It solves the problem of low stamping accuracy of existing positioning holes and the impact on subsequent processes.

[0027] In this embodiment, as Figure 6 , Figure 7 As shown, the top of the positioning punch 15 has a rounded corner transition structure, and the inner wall of the positioning die 16 has an elastic buffer ring. The elastic buffer ring is made of silicone, which can prevent the sharp tip of the punch from scratching the FPC surface during the stamping process. In particular, it can prevent the surface film of multi-layer FPC from being scratched, ensuring the appearance quality and electrical performance of FPC. It solves the problem of scratching the FPC surface caused by the sharpness of the existing positioning punch. It also plays a buffering role during the stamping of the positioning punch, relieving the stamping impact force and preventing excessive impact force from causing cracking and excessive burrs on the edge of the FPC positioning hole. At the same time, it reduces the rigid collision between the positioning punch and the die, reduces the wear of both, and extends the service life of the mold components. The silicone material has good elasticity and wear resistance, and its chemical properties are stable. It will not react with FPC, ensuring product quality and safety.

[0028] In this embodiment, as Figure 8 , Figure 9 As shown, the window-opening stamping unit 5 includes a window-opening punch 18 fixedly disposed on the lower surface of the window-opening movable punch seat 9 and a window-opening die 19 opened at the corresponding position of the vacuum adsorption plate 7. The cutting edge of the window-opening punch 18 adopts a gradient design, with the thickness of the cutting edge gradually decreasing from the root to the top. This allows the impact force to be gradually transmitted during the stamping process, avoiding excessive instantaneous impact force that could cause separation between the layers of multi-layer FPC and burrs on the window opening edge. At the same time, it can make the window opening edge flat and smooth, with high dimensional accuracy, meeting the stringent requirements of the FPC window opening process. Furthermore, the gradient cutting edge can facilitate the separation of waste material from the FPC. Meanwhile, the inner wall of the window opening die is polished to reduce friction between the waste material and the die, ensuring that the waste material is discharged smoothly and avoiding the accumulation of waste material that could cause the die to jam. This ensures the smooth progress of the window-opening stamping process and improves processing efficiency.

[0029] In this embodiment, as Figure 10 , Figure 11 As shown, the bending unit 6 includes: A bending punch 20 is fixedly disposed on the lower surface of the bending movable punch 10, and the bending surface of the bending punch 20 is provided with a fluororubber buffer layer. The bending die 21, located at the corresponding position of the vacuum adsorption plate 7, can make the bending force evenly applied to the bending point of the multi-layer FPC, avoid indentation and scratches at the bending point, prevent the separation between the layers of the multi-layer FPC, ensure that the bending point is flat and smooth, and meet the quality requirements of the FPC bending process.

[0030] In this embodiment, as Figure 4 As shown, the cleaning organization includes: Mounting seats 22 are fixedly installed on both sides of the upper mold base 1; Air pump 23 is mounted on mounting base 22; An air guide head 24 is connected at one end to the air pump 23; The other end of the air guide head 24 is connected to an air nozzle 25, which is set to correspond to the bending punch 20 of the bending unit 6. High-pressure gas is generated by the air pump 23 and blown to the bending punch 20 through the air guide head 24 and the air nozzle 25. This can quickly and thoroughly remove waste chips, prevent waste chips from affecting the processing quality of subsequent stamping processes, improve product yield, and solve the problems of low efficiency and incomplete cleaning of existing manual cleaning.

[0031] In this embodiment, as Figure 4 As shown, the air pump 23 is slidably mounted on the mounting base 22, and a push rod 26 is also slidably mounted on the mounting base 22. The lower end of the push rod 26 passes through the mounting base 22, and the upper end of the push rod 26 abuts against the bottom end of the air pump 23, ensuring that the air nozzle can be accurately aimed at the area where waste accumulates, improving the cleaning effect and avoiding cleaning dead corners.

[0032] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention includes the claims being limited to these examples; within the framework of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.

[0033] This invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. An FPC continuous stamping die, comprising an upper die holder (1) and a lower die holder (2), wherein the upper die holder (1) and the lower die holder (2) are slidably engaged by guide posts (3), characterized in that, The upper die base (1) is provided with a positioning hole stamping unit (4), a window stamping unit (5) and a bending unit (6) in sequence along the multi-layer FPC feeding direction. The continuous stamping die also includes: The movable components are respectively connected to the positioning hole stamping unit (4), the window stamping unit (5) and the bending unit (6). Each movable component is provided with an elastic component between itself and the upper mold base (1). The elastic coefficients of the elastic components of the positioning hole stamping unit (4), the window stamping unit (5) and the bending unit (6) increase sequentially, so that each unit is triggered sequentially when the upper mold base (1) moves downward. The multi-layer FPC is subjected to a sequential and continuous stamping action through the cooperation of the active and flexible components. A vacuum adsorption plate (7) is provided on the upper surface of the lower mold base (2), and the vacuum adsorption plate (7) corresponds to a multilayer FPC; A cleaning mechanism for blowing away the waste attached to the bending unit (6).

2. The FPC continuous stamping die according to claim 1, characterized in that, The movable components include a positioning hole movable punch (8), a window opening movable punch (9), and a bending movable punch (10). The three components are structurally compatible and correspond to the fixed positioning hole stamping unit (4), the window opening stamping unit (5), and the bending unit (6), respectively. The upper die base (1) has three independent accommodating cavities below it. The positioning hole movable punch (8), the window opening movable punch (9), and the bending movable punch (10) are slidably installed in the corresponding accommodating cavities through guide posts, and the elastic component is located between the top surface of the accommodating cavity and each movable punch.

3. The FPC continuous stamping die according to claim 2, characterized in that, The elastic components include a first elastic element (11), a second elastic element (12), and a third elastic element (13), all located at the lower end of the upper mold base (1). The elastic coefficients of the first elastic element (11), the second elastic element (12), and the third elastic element (13) increase sequentially. The initial height of the bottom end of the positioning hole stamping unit (4), the window stamping unit (5), and the bending unit (6) relative to the vacuum adsorption plate (7) increases sequentially. With the elastic elements having increasing elastic coefficients, each unit contacts and acts on the multilayer FPC sequentially when the upper mold base (1) moves downward.

4. The FPC continuous stamping die according to claim 1, characterized in that, The vacuum adsorption plate (7) has independent adsorption holes (14) on the surface of the multilayer FPC, and each adsorption hole (14) is connected to the vacuum generator through a sealed air pipe.

5. The FPC continuous stamping die according to claim 2, characterized in that, The positioning hole stamping unit (4) includes: A positioning punch (15) is fixedly disposed on the lower surface of the movable punch seat (8) of the positioning hole. A positioning die (16) is opened at the corresponding position of the vacuum adsorption plate (7); A positioning guide sleeve (17) is sleeved on the outside of the positioning punch (15). The positioning guide sleeve (17) is slidably sleeved on the outside of the positioning punch (15). The top end of the positioning guide sleeve (17) is connected to the positioning hole movable punch seat (8) through the stripping spring. The bottom end is used to press the multilayer FPC before the punch contacts the workpiece.

6. The FPC continuous stamping die according to claim 5, characterized in that, The top of the positioning punch (15) is provided with a rounded corner transition structure, and the inner wall of the positioning die (16) is provided with an elastic buffer ring, which is made of silicone.

7. The FPC continuous stamping die according to claim 2, characterized in that, The window punching unit (5) includes a window punch (18) fixed on the lower surface of the window punch seat (9) and a window die (19) opened at the corresponding position of the vacuum adsorption plate (7). The cutting edge of the window punch (18) adopts a gradient design, and the thickness of the cutting edge gradually decreases from the root to the top.

8. The FPC continuous stamping die according to claim 2, characterized in that, The bending unit (6) includes: A bending punch (20) is fixedly disposed on the lower surface of the bending movable punch (10), and the bending surface of the bending punch (20) is provided with a fluororubber buffer layer. A bending die (21) is opened at the corresponding position of the vacuum adsorption plate (7).

9. The FPC progressive stamping die according to claim 1, characterized in that, The cleaning mechanism includes: Mounting seats (22) are fixedly installed on both sides of the upper mold base (1); An air pump (23) is mounted on the mounting base (22); An air guide head (24) is connected at one end to the air pump (23); The other end of the air guide head (24) is connected to an air nozzle (25), which is set to correspond to the bending punch (20) of the bending unit (6).

10. The FPC continuous stamping die according to claim 9, characterized in that, The air pump (23) is slidably mounted on the mounting base (22), and a push rod (26) is also slidably mounted on the mounting base (22). The lower end of the push rod (26) passes through the mounting base (22), and the upper end of the push rod (26) abuts against the bottom end of the air pump (23).

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