Switchable stamping die

Abstract

The utility model belongs to the technical field of stamping dies, and particularly relates to a switchable stamping die which comprises an upper die base and a lower die base, the upper die base is arranged over the lower die base, an upper die is fixedly installed on the bottom side of the upper die base, and a lower die is fixedly installed on the top side of the lower die base. A lower die is arranged on the left side of the upper die, a stripper plate is arranged between the upper die and the lower die, five groups of sliding grooves are formed in the upper die, five groups of lifting grooves are formed in the bottom of the upper die, and the sliding grooves are communicated with the lifting grooves. And the stamping height of the first stamping rod is rapidly adjusted through the stamping height adjusting assembly, so that the width of the stamped resistance wire is controlled, the resistance value of a product reaches the needed range, and the practicability of the die is improved.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, specifically a switchable stamping die. Background Technology

[0002] Stamping dies are specialized equipment used in cold stamping processes to shape materials (metal or non-metal) into parts (or semi-finished products). They are widely used in the electronics manufacturing industry. Through the pressure provided by a press, the punch and die of the die apply forces to the material placed between them. Under the action of the die, the material undergoes plastic deformation or separation, thereby obtaining parts of the desired shape and size. With the development of manufacturing, stamping die technology has continuously improved. From the perspective of die structure design, more complex stamping processes can now be achieved, such as the design of multi-station progressive dies, which can continuously complete multiple stamping operations on the same die, greatly improving production efficiency.

[0003] Existing stamping dies for producing resistors have limitations. Since resistance is inversely proportional to the cross-sectional area of ​​the conductor, the width of the resistance wire directly affects the resistance value. However, existing dies are not easy to switch quickly to produce resistance wires of different widths, which reduces the practicality of the dies. To improve production flexibility and efficiency, we propose a switchable stamping die. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a switchable stamping die. A stamping height adjustment component is installed on the left side of the upper die. The stamping height of the stamping rod can be quickly adjusted by the stamping height adjustment component, thereby controlling the width of the resistance wire after stamping, so that the resistance value of the product reaches the required range, improving the practicality of the die and solving the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a switchable stamping die, comprising an upper die base and a lower die base, wherein the upper die base is positioned directly above the lower die base, an upper die is fixedly mounted on the bottom side of the upper die base, and a lower die is fixedly mounted on the top side of the lower die base. A stripper plate is provided between the upper die and the lower die. Five sets of sliding grooves are provided inside the upper die, and five sets of lifting grooves are provided at the bottom of the upper die. The sliding grooves communicate with the lifting grooves, and the interior of the sliding grooves is slidably connected. The device includes a sliding block, a trapezoidal block that is slidably connected inside the lifting groove, a trapezoidal groove at the bottom of the sliding block, the top side of the trapezoidal block abutting against the inner wall of the trapezoidal groove, a spring between the bottom side of the trapezoidal block and the bottom side of the lifting groove, a stamping height adjustment assembly installed on the left side of the upper mold, a cutting assembly installed on the right side of the upper mold, a guide assembly installed between the upper mold base and the lower mold base, a stripping assembly installed between the upper mold and the stripping plate, and a positioning assembly installed between the lower mold and the stripping plate.

[0006] Preferably, the stamping height adjustment assembly includes four sets of stamping rods. The four sets of stamping rods are respectively fixedly connected to the bottom side of the four sets of trapezoidal blocks located on the left side. The bottom ends of the four sets of stamping rods slide out of the bottom side of the upper mold, and the four sets of stamping rods slide through the stripper plate. The front side of the upper mold is rotatably mounted with four sets of screws. The rear ends of the four sets of screws are respectively threaded into the four sets of sliding blocks located on the left side. The front ends of the four sets of screws are all fixedly connected with hexagonal knobs.

[0007] Preferably, the cutting assembly includes a lifting rod, the top end of which is fixedly connected to the bottom side of the rightmost trapezoidal block, the bottom end of which slides out of the bottom side of the upper mold, and a cutting block is fixedly connected to the bottom end of the lifting rod. The cutting block slides through the stripper plate. A connecting rod is fixedly connected to the front side of the rightmost sliding block, the front end of which slides out of the front side of the upper mold. A cylinder is fixedly installed on the bottom side of the upper mold base, and the output shaft end of the cylinder is fixedly connected to the front end of the connecting rod.

[0008] Preferably, the guide assembly includes four sets of springs. Guide sleeves are fixedly connected to the four corners of the bottom side of the upper mold base, and guide posts are fixedly connected to the four corners of the top side of the lower mold base. The four sets of springs are respectively sleeved on the four sets of guide posts. A sliding pad is sleeved on the top of the guide post. The top side of the spring abuts against the bottom side of the sliding pad, and the top of the guide post slides through the guide sleeve.

[0009] Preferably, the stripping assembly includes four sets of springs II. A fixing rod is fixedly connected to each of the four corners of the bottom side of the upper mold. The four sets of springs II are respectively sleeved on the four sets of fixing rods. Sliding holes and limiting grooves are respectively opened at the four corners of the top and bottom of the stripping plate. The sliding holes communicate with the limiting grooves. The fixing rods slide through the sliding holes. A limiting plate is fixedly connected to the bottom end of the fixing rods. The top side of the limiting plate abuts against the top side of the limiting groove.

[0010] Preferably, the positioning assembly includes four sets of positioning rods, which are respectively fixedly connected to the bottom sides of four sets of limiting plates. Positioning grooves are provided at the four corners of the top of the lower mold, and the bottom ends of the positioning rods are inserted into the positioning grooves.

[0011] Preferably, each of the four sets of stamping rods is provided with a scale on its front side.

[0012] This invention provides a switchable stamping die. Compared with the prior art, it has the following advantages:

[0013] 1. This switchable stamping die has a stamping height adjustment component installed on the left side of the upper die. The stamping height of the stamping rod can be quickly adjusted by the stamping height adjustment component, thereby controlling the width of the resistance wire after stamping, so that the resistance value of the product reaches the required range, thus improving the practicality of the die. Attached Figure Description

[0014] Figure 1 This is a front view structural diagram of the main body of this utility model;

[0015] Figure 2 This is a schematic diagram of the main body disassembled structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the stamping height adjustment component of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the cutting component of this utility model.

[0018] In the diagram: 1. Upper mold base; 2. Lower mold base; 3. Upper mold; 4. Lower mold; 5. Stripper plate; 6. Guide sleeve; 7. Guide post; 8. Spring 1; 9. Sliding pad; 10. Positioning groove; 11. Connecting rod; 12. Trapezoidal groove; 13. Fixing rod; 14. Limiting plate; 15. Positioning rod; 16. Spring 2; 17. Scale; 18. Stamping rod 1; 19. Lifting rod; 20. Cutting block; 21. Sliding hole; 22. Limiting groove; 23. Sliding groove; 24. Lifting groove; 25. Spring 3; 26. Trapezoidal block; 27. Sliding block; 28. Screw; 29. ​​Hexagonal knob; 30. Cylinder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figure 1-4 This utility model provides a technical solution: a switchable stamping die, including an upper die base 1 and a lower die base 2. The upper die base 1 is positioned directly above the lower die base 2. An upper die 3 is fixedly installed on the bottom side of the upper die base 1, and a lower die 4 is fixedly installed on the top side of the lower die base 2. A stripper plate 5 is provided between the upper die 3 and the lower die 4. Five sets of sliding grooves 23 are provided inside the upper die 3, and five sets of lifting grooves 24 are provided at the bottom of the upper die 3. The sliding grooves 23 communicate with the lifting grooves 24, and sliding blocks 27 are slidably connected inside the sliding grooves 23. A trapezoidal block 26 is slidably connected inside the lifting groove 24. A trapezoidal groove 12 is opened at the bottom of the sliding block 27. The top side of the trapezoidal block 26 abuts against the inner wall of the trapezoidal groove 12. A spring 3 25 is provided between the bottom side of the trapezoidal block 26 and the bottom side of the lifting groove 24. A stamping height adjustment component is installed on the left side of the upper mold 3. A cutting component is installed on the right side of the upper mold 3. A guide component is installed between the upper mold base 1 and the lower mold base 2. A stripping component is installed between the upper mold 3 and the stripping plate 5. A positioning component is installed between the lower mold 4 and the stripping plate 5.

[0021] When in use, the stamping die moves the upper die base 1 to the lower die base 2 via the stamping press. During the movement, it is guided by the guide component. After the lower die 4 and the stripper plate 5 are positioned by the positioning component, they abut against each other. At this time, under the action of the stripper component, the upper die 3 and the stripper plate 5 are gradually pulled closer until the stamping is completed. The stamping die can adjust the stamping height by the stamping height adjustment component to produce resistor products of different widths. After a certain number of stampings, the resistor strip is cut by the cutting component to obtain the strip of the required length.

[0022] The stamping height adjustment assembly includes four sets of stamping rods 18. The four sets of stamping rods 18 are fixedly connected to the bottom side of four sets of trapezoidal blocks 26 located on the left side. The bottom ends of the four sets of stamping rods 18 slide out of the bottom side of the upper mold 3, and the four sets of stamping rods 18 slide through the stripper plate 5. Four sets of screws 28 are rotatably installed on the front side of the upper mold 3. The rear ends of the four sets of screws 28 are threaded into four sets of sliding blocks 27 located on the left side. The front ends of the four sets of screws 28 are fixedly connected to hexagonal knobs 29.

[0023] The stamping height adjustment component rotates the screw 28 by turning the hexagonal knob 29 with an Allen wrench. This causes the sliding block 27, which is threaded onto the screw 28, to slide inside the sliding groove 23. The top of the trapezoidal block 26, which is slidably connected inside the lifting groove 24, abuts against the trapezoidal groove 12 at the bottom of the sliding block 27. The inclined surface of the trapezoidal block 26 is parallel to the inclined surface of the trapezoidal groove 12. The trapezoidal block 26 is pressed against the top side by the spring 3 25 inside the lifting groove 24. As the sliding block 27 slides, it gradually presses the trapezoidal block 26 downward inside the lifting groove 24, thereby causing the stamping rod 18 to slide downward, thus changing the stamping height of the bottom end of the stamping rod 18 during stamping.

[0024] The cutting assembly includes a lifting rod 19, the top of which is fixedly connected to the bottom side of the trapezoidal block 26 located on the far right. The bottom end of the lifting rod 19 slides out of the bottom side of the upper mold 3, and a cutting block 20 is fixedly connected to the bottom end of the lifting rod 19. The cutting block 20 slides through the stripper plate 5. A connecting rod 11 is fixedly connected to the front side of the sliding block 27 located on the far right. The front end of the connecting rod 11 slides out of the front side of the upper mold 3. A cylinder 30 is fixedly installed on the bottom side of the upper mold base 1. The output shaft end of the cylinder 30 is fixedly connected to the front end of the connecting rod 11.

[0025] When the cutting assembly is in use, the cylinder 30 pushes the connecting rod 11, which in turn pushes the corresponding sliding block 27, thereby causing the corresponding trapezoidal block 26 to descend, so that the bottom height of the lifting rod 19 decreases, and the cutting block 20 at the bottom of the lifting rod 19 contacts the stamped part to complete the cutting.

[0026] The guide assembly includes four sets of springs 8. Guide sleeves 6 are fixedly connected to the four corners of the bottom side of the upper mold base 1, and guide posts 7 are fixedly connected to the four corners of the top side of the lower mold base 2. The four sets of springs 8 are respectively sleeved on the four sets of guide posts 7. A sliding pad 9 is sleeved on the top of the guide post 7. The top side of the spring 8 abuts against the bottom side of the sliding pad 9, and the top of the guide post 7 slides through the guide sleeve 6.

[0027] When the guide assembly is in use, as the upper mold base 1 and the lower mold base 2 approach each other, the guide post 7 gradually inserts into the guide sleeve 6 to guide the docking of the upper mold base 1 and the lower mold base 2. During the guiding process, the spring 8 presses against the sliding pad 9, and the sliding pad 9 contacts the guide sleeve 6 to reduce the vibration during the stamping process.

[0028] The stripping assembly includes four sets of springs 16. Fixed rods 13 are fixedly connected to the four corners of the bottom side of the upper mold 3. The four sets of springs 16 are respectively sleeved on the four sets of fixed rods 13. Sliding holes 21 and limiting grooves 22 are respectively opened at the four corners of the top and the four corners of the bottom of the stripping plate 5. The sliding holes 21 and the limiting grooves 22 are connected. The fixed rods 13 slide through the sliding holes 21. The bottom end of the fixed rods 13 is fixedly connected to a limiting plate 14. The top side of the limiting plate 14 abuts against the top side of the limiting groove 22.

[0029] When the stripping assembly is in use, during stamping, the stripping plate 5 is pressed against the lower mold 4 by the second spring 16, and the contact between the stripping plate 5 and the lower mold 4 is buffered. After the stamping is completed, the upper mold 3 rises and drives the stripping plate 5 to rise. Under the action of the second spring 16, the distance between the upper mold 3 and the stripping plate 5 increases until the stamping rod 18 retracts into the stripping plate 5, so as to prevent the stamped part from sticking to the stamping rod 18. The stripping plate 5 is prevented from disengaging by the limiting plate 14 on the fixing rod 13 and the limiting groove 22.

[0030] The positioning assembly includes four sets of positioning rods 15, which are fixedly connected to the bottom sides of four sets of limiting plates 14. Positioning grooves 10 are provided at the four corners of the top of the lower mold 4, and the bottom ends of the positioning rods 15 are inserted into the positioning grooves 10.

[0031] When the positioning component is in use, the positioning rod 15 gradually inserts into the positioning groove 10 when the stripper plate 5 abuts against the lower mold 4 to complete the positioning and avoid positional deviation.

[0032] Each of the four sets of stamping rods 18 is equipped with a scale 17 on its front side, which facilitates the adjustment of the stamping height of the stamping rods 18.

[0033] Working principle: When this stamping die is in use, the upper die holder 1 moves to the lower die holder 2 via the stamping press. The guide post 7 gradually inserts into the guide sleeve 6 to guide the connection between the upper die holder 1 and the lower die holder 2. During the guiding process, the spring 8 presses against the sliding pad 9, which contacts the guide sleeve 6 to dampen vibrations during the stamping process. When the lower die 4 and the stripper plate 5 approach each other, the positioning rod 15 gradually inserts into the positioning groove 10 to complete the positioning and prevent positional deviation. During stamping, the upper die holder 1 moves to the lower die holder 2. Spring 2 16 presses the stripper plate 5 against the lower mold 4 and buffers the stripper plate 5 when it contacts the lower mold 4 until the stamping is completed. After the stamping is completed, the upper mold 3 rises and drives the stripper plate 5 to rise. Under the action of spring 2 16, the distance between the upper mold 3 and the stripper plate 5 increases until the stamping rod 1 18 retracts into the stripper plate 5 to prevent the stamped part from sticking to the stamping rod 1 18. The stripper plate 5 is prevented from detaching by the limiting plate 14 on the fixing rod 13 and the limiting groove 22.

[0034] Furthermore, the mold can be rotated by turning the Allen wrench knob 29, thereby rotating the screw 28. This causes the sliding block 27, threaded onto the screw 28, to slide inside the sliding groove 23. The top of the trapezoidal block 26, which is slidably connected inside the lifting groove 24, abuts against the trapezoidal groove 12 at the bottom of the sliding block 27. The inclined surface of the trapezoidal block 26 is parallel to the inclined surface of the trapezoidal groove 12. The trapezoidal block 26 is held at its top by the spring 25 inside the lifting groove 24. As the sliding block 27 slides, it gradually presses against the trapezoidal block 26 during the lifting process. The groove 24 slides downward, which in turn causes the stamping rod 18 to slide downward, changing the stamping height of the bottom of the stamping rod 18 during stamping, so as to produce resistor products of different widths. After a certain number of stampings, the cylinder 30 pushes the connecting rod 11, which in turn pushes the corresponding sliding block 27, thereby causing the corresponding trapezoidal block 26 to descend, so that the bottom height of the lifting rod 19 decreases, and the cutting block 20 at the bottom of the lifting rod 19 cuts the resistor strip to obtain the strip of the required length.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A switchable stamping die comprising an upper die shoe (1) and a lower die shoe (2), characterized in that: The upper mold base (1) is located directly above the lower mold base (2). An upper mold (3) is fixedly installed on the bottom side of the upper mold base (1), and a lower mold (4) is fixedly installed on the top side of the lower mold base (2). A stripper plate (5) is provided between the upper mold (3) and the lower mold (4). Five sets of sliding grooves (23) are provided inside the upper mold (3), and five sets of lifting grooves (24) are provided at the bottom of the upper mold (3). The sliding grooves (23) and the lifting grooves (24) are connected. A sliding block (27) is slidably connected inside the sliding groove (23), and a trapezoidal block is slidably connected inside the lifting groove (24). (26) The bottom of the sliding block (27) is provided with a trapezoidal groove (12). The top side of the trapezoidal block (26) abuts against the inner wall of the trapezoidal groove (12). A spring (25) is provided between the bottom side of the trapezoidal block (26) and the bottom side of the lifting groove (24). A stamping height adjustment component is installed on the left side of the upper mold (3). A cutting component is installed on the right side of the upper mold (3). A guide component is installed between the upper mold base (1) and the lower mold base (2). A stripping component is installed between the upper mold (3) and the stripping plate (5). A positioning component is installed between the lower mold (4) and the stripping plate (5).

2. A switchable stamping die according to claim 1, wherein: The stamping height adjustment assembly includes four sets of stamping rods (18). The four sets of stamping rods (18) are fixedly connected to the bottom side of the four sets of trapezoidal blocks (26) located on the left side. The bottom ends of the four sets of stamping rods (18) slide out of the bottom side of the upper mold (3), and the four sets of stamping rods (18) slide through the stripper plate (5). The front side of the upper mold (3) is rotatably installed with four sets of screws (28). The rear ends of the four sets of screws (28) are threaded into the four sets of sliding blocks (27) located on the left side. The front ends of the four sets of screws (28) are fixedly connected with hexagonal knobs (29).

3. A switchable stamping die according to claim 1, wherein: The cutting assembly includes a lifting rod (19), the top end of which is fixedly connected to the bottom side of the trapezoidal block (26) located on the far right. The bottom end of the lifting rod (19) slides out of the bottom side of the upper mold (3), and the bottom end of the lifting rod (19) is fixedly connected to a cutting block (20). The cutting block (20) slides through the stripper plate (5). A connecting rod (11) is fixedly connected to the front side of the sliding block (27) located on the far right. The front end of the connecting rod (11) slides out of the front side of the upper mold (3). A cylinder (30) is fixedly installed on the bottom side of the upper mold base (1). The output shaft end of the cylinder (30) is fixedly connected to the front end of the connecting rod (11).

4. A switchable stamping die according to claim 1, wherein: The guide assembly includes four sets of springs (8). Guide sleeves (6) are fixedly connected to the four corners of the bottom side of the upper mold base (1), and guide posts (7) are fixedly connected to the four corners of the top side of the lower mold base (2). The four sets of springs (8) are respectively sleeved on the four sets of guide posts (7). A sliding pad (9) is sleeved on the top of the guide post (7). The top side of the spring (8) abuts against the bottom side of the sliding pad (9), and the top of the guide post (7) slides through the guide sleeve (6).

5. A switchable stamping die according to claim 1, wherein: The stripping assembly includes four sets of springs (16). Fixed rods (13) are fixedly connected to the four corners of the bottom side of the upper mold (3). The four sets of springs (16) are respectively sleeved on the four sets of fixed rods (13). The top four corners and bottom four corners of the stripping plate (5) are respectively provided with sliding holes (21) and limiting grooves (22). The sliding holes (21) are connected to the limiting grooves (22). The fixed rods (13) slide through the sliding holes (21). The bottom end of the fixed rods (13) is fixedly connected to a limiting plate (14). The top side of the limiting plate (14) abuts against the top side of the limiting groove (22).

6. A switchable stamping die according to claim 5, wherein: The positioning assembly includes four sets of positioning rods (15), which are fixedly connected to the bottom sides of four sets of limiting plates (14). The four corners of the top of the lower mold (4) are provided with positioning grooves (10), and the bottom ends of the positioning rods (15) are inserted into the positioning grooves (10).

7. A switchable stamping die according to claim 2, wherein: Each of the four sets of stamping rods (18) has a scale (17) on its front side.

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