Double-track punching and separating die and punching and separating process

Abstract

This invention belongs to the field of punching die technology, and provides a dual-track punching separation die and punching separation process. The die includes an upper die assembly, a clamping assembly, and a lower die assembly. The upper die assembly is provided with a punch fixing plate. Several punches for the punching process are mounted on the surface of the punch fixing plate facing the lower die assembly. The clamping assembly is provided with a double-track slide, which is fixedly installed between the upper and lower die assemblies for clamping the product to be punched. The lower die assembly is provided with a die holder, and several dies corresponding to the punches are mounted on the surface of the die holder facing the upper die assembly. This invention adapts to the product to be punched by employing various punch and die structures, utilizing the cooperation between the punches and dies to solve the problems of low precision and low efficiency, while ensuring a high safety factor.

Description

Technical Field

[0001] This invention belongs to the field of punching die technology, and specifically relates to a dual-track punching separation die and punching separation process. Background Technology

[0002] TO-type integrated circuits are widely used in industrial power supplies, automotive electronics, medical equipment, and network communication equipment due to their excellent heat dissipation performance, robust structure, and ability to operate in harsh environments. The pins of an integrated circuit serve as the bridge between the internal and external circuits; therefore, for TO-type products, the punching and separation of the pins is a crucial step in the entire integrated circuit manufacturing process.

[0003] In existing punching and separation dies, the typical process is: punching the gate, cutting the center rib, pre-cutting, and separation. Since TO-type integrated circuit products are mostly single-row, each process can only cut a single product. However, these products have a wide range of applications and high demand, and the production capacity of a single frame cannot meet market demand. Most TO-type punching on the market is manual, which is inaccurate, inefficient, and poses certain safety hazards. Summary of the Invention

[0004] To address the problems in the background art, this invention proposes a dual-track punching and separation mold and a punching and separation process.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dual-track punching and separating die includes an upper die assembly, a clamping assembly, and a lower die assembly;

[0007] The upper die assembly is provided with a punch fixing plate; several punches for punching processes are installed on the surface of the punch fixing plate facing the lower die assembly.

[0008] The clamping assembly is provided with a double-rail slide, which is fixedly installed between the upper die assembly and the lower die assembly for clamping the product to be punched.

[0009] The lower mold assembly is provided with a die holder, and the surface of the die holder facing the upper mold assembly is provided with several dies corresponding to the punch.

[0010] Preferably, the product to be punched is a plurality of integrally connected frames, each frame comprising:

[0011] Insulating frame;

[0012] A metal frame, comprising a rectangular frame and several strip-shaped metal strips; the metal strips are parallel to each other and one end is inserted into the insulating frame;

[0013] The rectangular frame and the metal strip are an integral structure, with its upper frame connected to the end of the metal strip away from the insulating frame, and its lower frame connected to the root of the metal strip near the insulating frame.

[0014] In several interconnected frames, adjacent rectangular frames share a common side border.

[0015] Preferably, the punches on the punch fixing plate include a large rib cutting punch, a medium rib cutting punch, a detection punch, a first separation punch, and a second separation punch;

[0016] The rib-cutting punch is used to punch the side frame of the rectangular frame;

[0017] The cutting rib punch is used to punch the lower border of the rectangular frame;

[0018] The first separating punch is used to punch the upper border of the rectangular frame;

[0019] The second separating punch is used to punch the connecting ribs between adjacent insulating frames;

[0020] The detection punch is used to detect whether the lower frame has been punched.

[0021] Preferably, the die cavity formed on the surface of the die cavity base includes a separation die cavity, a middle rib die cavity, and a large rib die cavity;

[0022] During punching, the large rib die is located below the side frame of the rectangular frame and slides in cooperation with the large rib cutting punch; the middle rib die is located below the upper and lower frames of the rectangular frame and slides in cooperation with the middle rib cutting punch; and the separation die slides in cooperation with the detection punch.

[0023] Preferably, the upper mold assembly further includes an upper template, a punch pad, and a stripper insert seat;

[0024] The punch pad is fixedly installed on the lower surface of the upper template;

[0025] The punch fixing plate is fixedly installed on the lower surface of the punch pad;

[0026] The unloading insert seat is fixedly installed below the punch fixing plate and slides in cooperation with the punch used for the punching process.

[0027] Preferably, the lower mold assembly further includes a lower template, and the cavity mold base is fixedly mounted on the upper surface of the lower template.

[0028] Preferably, the double-rail slide is fixedly installed on the surface of the die holder.

[0029] Preferably, the clamping assembly further includes a plurality of slide cover plates;

[0030] In all the integrally connected frames, at least one of the slide cover plates is used to press against the upper edge of the rectangular frame; at least one of the slide cover plates is used to press against the insulating frame.

[0031] A punching and separation process for the aforementioned dual-track punching and separation die includes the following steps:

[0032] The integrally connected frame to be punched is clamped onto the double-rail slide;

[0033] The integrally connected frame to be punched is moved sequentially to the stations corresponding to different punches and punched.

[0034] Remove the punched product.

[0035] Preferably, the integrally connected frame to be punched is moved sequentially to the stations corresponding to different punches and punched, including the following steps:

[0036] The side borders of the rectangular frame are punched at the first workstation;

[0037] The bottom border of the rectangle is punched at the second workstation;

[0038] The top border of the rectangle is cut at the third station, and the bottom border is punched repeatedly at the same third station to detect whether the bottom border has been punched.

[0039] The beneficial effects of this invention are:

[0040] 1. The present invention is adapted to products to be punched by adopting a variety of punch and die structures. By utilizing the cooperation between the punch and die, the problems of low precision and low efficiency are solved, and the safety factor is high.

[0041] 2. This invention ensures the rigidity and precision of the entire mold by setting an upper and lower template, alleviates the stamping force of the product by setting a punch pad, roughly positions the head of the punch by setting a punch fixing plate, precisely positions the punch cutting edge by setting an unloading insert seat, enables two frames to be punched simultaneously by setting a double-rail slide, and fixes the die by setting a die holder to ensure the precision of the punched product.

[0042] 3. This invention achieves the removal of large connecting ribs between two frames through the cooperation of a large rib cutting punch and a large rib cutting die. It also achieves the removal of connecting ribs between individual integrated circuit pins through the cooperation of a medium rib cutting punch and a medium rib cutting die. The integrated circuit is separated from the frame through the cooperation of a first separation punch, a second separation punch, and a separation die. A detection punch ensures complete removal of the medium ribs. A slide cover plate reduces frame displacement during movement on the double-track slide. Steps, grooves, and polishing on the double-track slide reduce friction during frame movement and minimize unnecessary contact, preventing damage to integrated circuit leads while maintaining necessary contact to ensure the strength of the rib separation. Both the punch and die use high-performance cemented carbide, ensuring the rigidity and wear resistance of the cutting edges and guaranteeing the product's service life.

[0043] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of the present 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 some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 A schematic diagram of the dual-track punching separation die structure of the present invention is shown;

[0046] Figure 2a This diagram illustrates the structure of the various frames of the present invention when they are not punched.

[0047] Figure 2b It shows Figure 2a A structural diagram of a single frame;

[0048] Figure 2c A schematic diagram of the structure after punching a single frame is shown;

[0049] Figure 3 The distribution diagram of the punch of the present invention during the punching process is shown;

[0050] Figure 4 A top view of the double-track slide and slide cover plate of the present invention is shown;

[0051] Figure 5 It shows Figure 4 Side view;

[0052] Figure 6 A flowchart of a punching and separation process according to the present invention is shown;

[0053] Figure 7 A workstation diagram of the punching and separation process of the present invention is shown;

[0054] Figure 8 The process diagram of station B of the present invention is shown;

[0055] Figure 9 The process diagram of station C of the present invention is shown;

[0056] Figure 10 The process diagram of station D of the present invention is shown.

[0057] In the diagram: 1. Frame; 101. Insulating frame; 102. Metal frame; 1021. Rectangular frame; 1022. Metal strip; 2. Large rib cutting punch; 3. Middle rib cutting punch; 4. Detection punch; 5. First separation punch; 6. Second separation punch; 7. Upper template; 8. Punch pad; 9. Punch fixing plate; 10. Unloading insert seat; 11. Double track slide; 12. Die seat; 13. Lower template; 14. Separation die; 15. Middle rib die; 16. Large rib die; 17. Slide cover plate. Detailed Implementation

[0058] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figure 1 As shown, a dual-track punching and separating die includes an upper die assembly, a clamping assembly, and a lower die assembly. During punching, the clamping assembly clamps the product to be punched and then transports the product to the corresponding station. The upper die assembly then performs the punching, and the waste generated during punching falls into the lower die assembly.

[0060] like Figure 1As shown, the upper die assembly includes an upper die plate 7, a punch pad 8, a punch fixing plate 9, and a stripper insert seat 10. The punch pad 8 is fixedly mounted (bolted) on the lower surface of the upper die plate 7, which can alleviate the stamping force on the product. The punch fixing plate 9 is fixedly mounted (bolted) on the lower surface of the punch pad 8, and the punch fixing plate 9 can provide coarse positioning for the head of the punch. The surface of the punch fixing plate 9 facing the lower die assembly is provided with several punches for the punching process, achieving precise punching of the frame 1 during the stamping process. The stripper insert seat 10 is fixedly disposed below the punch fixing plate 9. It can be connected to the punch fixing plate 9 through structures such as guide pillars, and the two maintain a fixed distance. Furthermore, the stripper insert seat 10 can slide with the punch used for the punching process. This is because the punch itself has a certain length; the stripper insert seat 10 can stabilize and guide the punch, thereby achieving precise positioning of the punch.

[0061] like Figure 1 As shown, the clamping assembly consists of a double-rail slide 11 and several slide cover plates 17. The double-rail slide 11 is securely installed between the upper die assembly and the lower die assembly, and the positioning structure enables reliable clamping of the product to be punched, ensuring that the product remains stable during the punching process. The slide cover plates 17 can be tightened with bolts or pressure applied by a pneumatic device to firmly fix the product to be punched within the double-rail slide 11, effectively preventing the product from shifting or tilting, and improving the punching accuracy.

[0062] like Figure 1 As shown, the lower die assembly includes a die holder 12 and a lower template 13. The double-rail slide 11 can be bolted to the surface of the die holder 12. The surface of the die holder 12 facing the upper die assembly is provided with various dies that match the punch. The clearance accuracy between the punch and die is ensured through the processing technology, thereby achieving precise stamping and forming of the product. The lower template 13 can be bolted to the die holder 12, providing a stable support base for the entire lower die assembly, enhancing the rigidity and impact resistance of the die structure, and ensuring stability and reliability during the stamping process.

[0063] like Figure 2a and Figure 2bAs shown, the product to be punched can be several integrally connected frames 1, each frame 1 mainly composed of an insulating frame 101 and a metal frame 102. The metal frame 102 is provided with a rectangular frame 1021 and three strip-shaped metal strips 1022. The metal strips 1022 are parallel to each other, and one end is inserted into the insulating frame 101. The rectangular frame 1021 and the metal strips 1022 are an integral structure; its upper frame is connected to the end of the metal strip 1022 away from the insulating frame 101, and its lower frame is connected to the root of the metal strip 1022 near the insulating frame 101. Furthermore, in the several integrally connected frames 1, adjacent rectangular frames 1021 share side frames. In the subsequent punching process, the upper frame, lower frame, and side frames of the metal frame 102 are mainly punched, therefore, a suitable punch and die are required. After the frame 1 is punched, it looks like... Figure 2c As shown, it retains only the metal strip 1022 and the insulating frame 101.

[0064] like Figure 3 As shown in Figure 2, a punch structure is presented. Specifically, the punch on the punch fixing plate 9 includes a large rib cutting punch 2, a middle rib cutting punch 3, a detection punch 4, a first separation punch 5, and a second separation punch 6. According to the punching process, the first step is to punch the side frame, the second step is to punch the bottom frame, the third step is to punch the top frame, and the fourth step is to detect the punched frame 1 to determine whether each frame has been punched.

[0065] Therefore, the large rib cutting punch 2 corresponds to the first step and can punch the side frame of the rectangular frame 1021; the middle rib cutting punch 3 corresponds to the second step and can punch the bottom frame of the rectangular frame 1021; the first separating punch 5 corresponds to the third step and can punch the top frame of the rectangular frame 1021; the detection punch 4 corresponds to the fourth step and can detect whether the bottom frame has been punched. The second separating punch 6 can punch the connecting ribs between adjacent insulating frames 101.

[0066] It should be noted that, in addition to detecting whether the frame has been punched, the detection punch 4 can also issue an alarm signal to notify the staff that the product quality is unqualified. In another optional solution, in addition to issuing an alarm, the detection punch 4 can also perform a second punching on the un-punched / incompletely punched frame to ensure that the frame is completely punched.

[0067] It should be further noted that, in the optional scheme, there are 10 large rib cutting punches 2; 20 medium rib cutting punches 3; 2 first separation punches 5; 8 second separation punches 6; and 10 detection punches 4.

[0068] Combination Figure 1It is known that the dies formed on the surface of the die holder 12 include a separating die 14, a middle rib die 15, and a large rib die 16. The dies are adapted to the punches in the upper die assembly. When the punches are punching, the waste generated during punching can enter the dies. Therefore, during punching, the large rib die 16 is located below the side frame of the rectangular frame 1021 and slides in cooperation with the large rib cutting punch 2. The middle rib die 15 is located below the upper and lower frames of the rectangular frame 1021 and slides in cooperation with the middle rib cutting punch 3. The separating die 14 slides in cooperation with the detection punch 4.

[0069] It should be noted that, in the optional scheme, there are 10 separation dies 14, 10 middle rib dies 15, and 10 large rib dies 16.

[0070] like Figure 4 and Figure 5 As shown, two rows of frames 1 are placed on the double-track slide 11, and a total of three slide cover plates 17 are provided. The middle slide cover plate 17 can press down the upper edge of the first row of frames 1 and the insulating frame 101 of the second row of frames 1. The insulating frame 101 of the first row of frames 1 is pressed down by the corresponding slide cover plate 17, while the upper edge of the second row of frames 1 is pressed down by the remaining slide cover plates 17.

[0071] It should be noted that the double-track slide 11 is machined with steps and through grooves; the steps in contact with the frame 1 are required to be polished to reduce friction during frame movement and reduce unnecessary contact to prevent damage to integrated circuit leads, while retaining necessary contact to ensure the strength of the rib separation.

[0072] Furthermore, the double-track slide 11, upper template 7, unloading insert seat 10, and lower template 13 are all made of alloy tool steel; the large rib cutting punch 2, the medium rib cutting punch 3, the first separation punch 5, the detection punch 4, and the separation die 14, the medium rib die 15, and the large rib die 16 are all made of high-performance cemented carbide, ensuring the rigidity and wear resistance of the cutting edge parts and guaranteeing the service life of the product.

[0073] like Figure 6 The diagram illustrates a punching and separation process used in the aforementioned dual-track punching and separation die, comprising the following steps:

[0074] S1: Clamp the integrally connected frame 1 to be punched onto the double-rail slide 11. After clamping, as shown... Figure 7 As shown in workstation A.

[0075] S2: Move the integrally connected frame 1 to be punched to the corresponding station of different punches in sequence, and punch it.

[0076] S3: Remove the punched product.

[0077] like Figure 7As shown, S2 has four workstations: A, B, C, and D, and includes the following steps:

[0078] S201: Punch the side border of rectangular frame 1021 at station B. Specifically, as follows... Figure 8 As shown, multiple large rib cutting punches 2 can punch the side frame to cut off the large connecting ribs between pairs of frames 1.

[0079] S202: Punch the bottom border of rectangular frame 1021 at station C; specifically, as shown in... Figure 9 As shown, multiple cutting rib punches 3 cut off the lower border of the rectangular frame 1021.

[0080] S203: Cut the top border of rectangle 1021 at station D; simultaneously, repeatedly punch the bottom border at station D to detect whether the bottom border has been punched. Specifically, as follows... Figure 10 As shown, multiple first separating punches 5 punch the upper frame, with the first separating punch 5 closest to station C having a larger punching range than the others. Additionally, multiple second separating punches 6 are used to punch between adjacent insulating frames 101 to ensure separation of adjacent insulating frames 101. Furthermore, the detection punch 4 can detect the connecting ribs between the metal strips 1022 to ensure that the metal strips 1022 are separated from each other. If a metal strip 1022 is detected as not being separated, an alarm will be triggered.

[0081] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A dual-track punching and separating die, characterized in that, Includes upper mold assembly, clamping assembly, and lower mold assembly; The upper die assembly is provided with a punch fixing plate (9); the surface of the punch fixing plate (9) facing the lower die assembly is equipped with several punches for punching processes; The clamping assembly is provided with a double-rail slide (11), which is fixedly installed between the upper mold assembly and the lower mold assembly for clamping the product to be punched; The lower mold assembly is provided with a die holder (12), and the die holder (12) has a surface facing the upper mold assembly on which a number of dies corresponding to the punch are installed; The product to be punched consists of several integrally connected frames (1), each frame (1) comprising: Insulating frame (101); A metal frame (102) is provided with a rectangular frame (1021) and a plurality of strip-shaped metal strips (1022); the metal strips (1022) are parallel to each other and one end is inserted into the insulating frame (101); The rectangular frame (1021) and the metal strip (1022) are an integral structure. The upper frame is connected to the end of the metal strip (1022) away from the insulating frame (101), and the lower frame is connected to the root of the metal strip (1022) near the insulating frame (101). In several integrally connected frames (1), adjacent rectangular frames (1021) share a side border; The punches on the punch fixing plate (9) include a large rib cutting punch (2), a medium rib cutting punch (3), a detection punch (4), a first separation punch (5), and a second separation punch (6); The large rib cutting punch (2) is used to punch the side frame of the rectangular frame (1021); The cutting rib punch (3) is used to punch the lower border of the rectangular frame (1021); The first separating punch (5) is used to punch the upper border of the rectangular frame (1021); The second separating punch (6) is used to punch the connecting ribs between adjacent insulating frames (101); The detection punch (4) is used to detect whether the lower frame has been punched.

2. The dual-track punching and separating die according to claim 1, characterized in that, The dies opened on the surface of the die holder (12) include a separation die (14), a middle rib die (15), and a large rib die (16). During punching, the large rib die (16) is located below the side frame of the rectangular frame (1021) and slides in cooperation with the large rib cutting punch (2), the middle rib die (15) is located below the upper and lower frames of the rectangular frame (1021) and slides in cooperation with the middle rib cutting punch (3), and the separation die (14) slides in cooperation with the detection punch (4).

3. The dual-track punching and separating die according to claim 1, characterized in that, The upper mold assembly also includes an upper template (7), a punch pad (8), and a stripper insert seat (10). The punch pad (8) is fixedly installed on the lower surface of the upper template (7); The punch fixing plate (9) is fixedly installed on the lower surface of the punch pad (8); The unloading insert (10) is fixedly installed below the punch fixing plate (9) and slides in cooperation with the punch used for the punching process.

4. The dual-track punching and separating die according to claim 1, characterized in that, The lower mold assembly also includes a lower template (13), and the cavity mold base (12) is fixedly installed on the upper surface of the lower template (13).

5. A dual-track punching and separating die according to claim 1, characterized in that, The double-track slide (11) is fixedly installed on the surface of the die holder (12).

6. A dual-track punching and separating die according to claim 1 or 2, characterized in that, The clamping assembly also includes several slide cover plates (17). In all the integrally connected frames (1), at least one of the slide cover plates (17) is used to press against the upper edge of the rectangular frame (1021); at least one of the slide cover plates (17) is used to press against the insulating frame (101).

7. A punching and separation process for a dual-track punching and separation die as described in any one of claims 2-6, characterized in that, Includes the following steps: The integrally connected frame (1) to be punched is clamped onto the double-rail slide (11); The integrally connected frame (1) to be punched is moved sequentially to the station corresponding to different punches and punched. Remove the punched product.

8. The punching and separation process according to claim 7, characterized in that, The integrally connected frame (1) to be punched is moved sequentially to the stations corresponding to different punches and punched, including the following steps: The side border of the rectangular frame (1021) is punched at the first station; The bottom border of the rectangular frame (1021) is punched at the second station; The top border of the rectangle (1021) is cut at the third station, and the bottom border is punched repeatedly at the same third station to detect whether the bottom border has been punched.

Images