A die cutting mold
By introducing support blocks and elastic elements into the punching die, the problems of edge deformation and chamfering of soft and highly ductile sheet materials during the punching process are solved, resulting in a higher punching yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO S J ELECTRONICS CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-08-04
AI Technical Summary
When a sheet of material that is soft and highly ductile is punched, the punched edge is prone to stretching and deformation and chamfering, which affects the punching yield.
A punching die is used, including an upper die, a lower die, a support block, an elastic element, and a support plate. The support block is slidably disposed on the lower die and abuts against the sheet material. The elastic element abuts against the lower die. The support plate is disposed on the side of the lower die away from the upper die. The elastic element provides support force during the punching process, improves the stability of the lower die, makes the sheet material more evenly stressed, and reduces deformation and chamfering.
By combining the support block and the elastic element, the stability of the sheet during the punching process is improved, the deformation and chamfering of the sheet edge are reduced, and the punching yield is increased.
Smart Images
Figure CN224586744U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of punching technology, and in particular to a punching die. Background Technology
[0002] Punching is a process that uses punching dies to apply pressure to metal materials and separate them into a predetermined shape. It is mostly used for cutting sheet metal.
[0003] The punching die includes an upper die and a lower die. The upper die is equipped with a punch, and the lower die is equipped with a cutting edge. The sheet material is placed between the upper die and the lower die. The press drives the upper die to move downward, so that the punch contacts the sheet material and applies pressure. The sheet material is pressed into the cutting edge of the lower die. The interaction between the punch and the cutting edge causes the sheet material to break and separate under the action of shearing force, so as to punch the sheet material into the desired shape.
[0004] However, when the punching process is carried out on a sheet of soft material with high ductility, the lower die provides insufficient support at the punching edge and below the sheet when the punch presses down on the sheet. This makes the punching edge of the sheet prone to stretching deformation and chamfering, which affects the punching yield. Utility Model Content
[0005] The purpose of this utility model is to provide a punching die to solve the problem that when a piece of material that is soft and has high ductility is punched, the punching edge is prone to stretching deformation and chamfering.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A punching die for punching sheet metal, the punching die comprising: an upper die connected to a punch; a lower die having a cutting edge on its surface facing the upper die corresponding to the punch; a support block slidably disposed on the lower die and corresponding to each cutting edge, such that the support block can selectively abut against the sheet metal; an elastic element selectively abutting against the lower die; and a support plate, wherein the support block and the elastic element are both disposed on the support plate, the support plate being disposed on the side of the lower die opposite to the upper die.
[0008] Preferably, multiple elastic elements are provided, and the multiple elastic elements are symmetrically arranged at both ends of the support plate.
[0009] Preferably, the elastic element is a spring, one end of which is fixedly connected to the support plate, and the other end of which can selectively abut against the lower mold.
[0010] Preferably, the support plate has a limiting groove on its surface facing the lower mold, and one end of the spring facing the support plate is engaged in the limiting groove.
[0011] Preferably, the support plate is connected to a sleeve and a guide post. The sleeve is fixedly disposed on the support plate, and the guide post is slidably disposed inside the sleeve. One end of the guide post is fixedly connected to the lower mold to restrict the movement direction of the support plate.
[0012] Preferably, a limiting block is connected to the end of the guide post away from the lower mold. The limiting block is located on the side of the sleeve away from the support plate to limit the movement distance of the guide post within the sleeve.
[0013] Preferably, four sleeves are provided, and the four sleeves are respectively provided at the four corners of the support block.
[0014] Preferably, the lower mold has a receiving groove on the side opposite to the upper mold for accommodating the support plate, and the receiving groove is connected to the cutting edge.
[0015] Preferably, the punching die further includes a stripping assembly, which includes a connecting post and a stripping spring. The connecting post is fixedly connected to one of the upper die and the lower die, and slidably connected to the other. The stripping spring is sleeved on the connecting post, and its two ends abut against the upper die and the lower die, respectively.
[0016] Preferably, the lower die is provided with a stripping groove at the position corresponding to the cutting edge, the stripping groove is connected to the cutting edge, and the cross-sectional area of the stripping groove is larger than the cross-sectional area of the cutting edge.
[0017] The beneficial effects of this utility model are:
[0018] A punching die is used for punching sheet metal. The punching die includes an upper die, a lower die, a support block, an elastic element, and a support plate. The upper die is connected to a punch. The surface of the lower die facing the upper die has cutting edges corresponding to the punch. The support block is slidably disposed on the lower die and is disposed in correspondence with the cutting edges, so that the support block can selectively abut against the sheet metal. The elastic element can selectively abut against the lower die. The support block and the elastic element are both disposed on the support plate, which is disposed on the side of the lower die opposite to the upper die.
[0019] In the initial state, the top surface of the support block is flush with the top surface of the lower die, allowing the support block to stably support the sheet metal. The elastic element is in a compressed state at this time. When the stamping begins, the upper die drives the punch to move downward, so that the punch and the support block clamp the sheet metal and move downward together to achieve the punching of the sheet metal. During the downward movement of the punch and the support block, the elastic element gradually recovers its deformation and provides support force around the corresponding cutting edge of the lower die, thereby improving the stability of the lower die, making the sheet metal more evenly stressed, reducing the deformation of the punched edge of the sheet metal, avoiding chamfering, and improving the punching yield. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of a punching die in one embodiment of the present invention;
[0021] Figure 2 This is a schematic diagram of the first partial structure of the punching die in one embodiment of the present invention;
[0022] Figure 3 This is a schematic diagram of the second partial structure of the punching die in one embodiment of the present invention;
[0023] Figure 4 This is a schematic diagram of the support plate in one embodiment of the present invention;
[0024] Figure 5 This is a partial structural schematic diagram of the lower mold in one embodiment of the present invention.
[0025] In the picture:
[0026] 1. Sheet material; 2. Upper die; 21. Punch; 3. Lower die; 31. Cutting edge; 32. Receiving groove; 33. Stripping groove; 4. Support block; 5. Elastic element; 6. Support plate; 61. Limiting groove; 62. Sleeve; 63. Guide post; 631. Limiting block; 7. Stripping assembly; 71. Connecting post; 72. Stripping spring. Detailed Implementation
[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.
[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0030] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.
[0031] See Figures 1 to 3 This utility model provides a punching die for punching a sheet of material 1. The punching die includes an upper die 2, a lower die 3, a support block 4, an elastic element 5, and a support plate 6. The upper die 2 is connected to a punch 21. The lower die 3 has a cutting edge 31 on its surface facing the upper die 2, corresponding to the position of the punch 21. The support block 4 is slidably disposed on the lower die 3 and is disposed in a one-to-one correspondence with the cutting edge 31, so that the support block 4 can selectively abut against the sheet of material 1. The elastic element 5 can selectively abut against the lower die 3. The support block 4 and the elastic element 5 are both disposed on the support plate 6, which is disposed on the side of the lower die 3 away from the upper die 2.
[0032] In this embodiment, the upper mold 2 is disposed above the lower mold 3, and multiple punches 21 are disposed. The multiple punches 21 are arranged at equal intervals in the horizontal direction. The cutting edge 31 is disposed in a one-to-one correspondence with the punches 21. The shape of the support block 4 is the same as the shape of the cutting edge 31. The support block 4 is fixedly disposed on the support plate 6. The support block 4 is slidably disposed on the cutting edge 31 in the vertical direction. The elastic element 5 is disposed on the outside of the cutting edge 31. When the top surface of the support block 4 is flush with the surface of the lower mold 3 facing the upper mold 2, the support block 4 can abut against and support the sheet 1, and at this time the elastic element 5 is compressed.
[0033] Thus, in the initial state, the top surface of the support block 4 is flush with the top surface of the lower die 3 and can stably support the sheet 1. The elastic element 5 is in a compressed state at this time. When the stamping begins, the upper die 2 drives the punch 21 to move downward. The punch 21 and the support block 4 respectively abut against the top and bottom surfaces of the sheet 1 and move downward together, so that the punch 21 and the cutting edge 31 work together to punch the sheet 1. At the same time, since the support block 4 and the support plate 6 both move downward, the elastic element 5 in the compressed state recovers its deformation and provides support force to the lower die 3, thereby improving the stability of the lower die 3, making the sheet 1 more evenly stressed, reducing the deformation of the punching edge of the low-hardness, high-ductility sheet 1 (e.g., indium sheet), avoiding chamfering, and improving the punching yield.
[0034] It is understandable that the upper mold 2 and the support block 4 can be connected to the same drive source or to different drive sources, which will not be listed in detail here.
[0035] See Figure 4 In some embodiments, multiple elastic elements 5 are provided, and the multiple elastic elements 5 are symmetrically arranged at both ends of the support plate 6.
[0036] In this embodiment, two sets of elastic elements 5 are provided. The two sets of elastic elements 5 are respectively provided at both ends of the support plate 6 along the arrangement direction of the blade 31. Each set of elastic elements 5 includes two elastic elements 5 that are spaced apart.
[0037] In this way, the symmetrical arrangement of multiple elastic elements 5 can ensure that the lower die 3 is subjected to multiple points of uniform support force, improve the stability during the stamping process, prevent the edge of the stamped sheet 1 from curling and deforming, and avoid affecting the punching yield due to uneven force on the lower die 3.
[0038] It is understandable that the location and number of elastic elements 5 can be adjusted according to actual needs, and will not be listed in detail here.
[0039] See Figure 3 and Figure 4 In some embodiments, the elastic element 5 is a spring, one end of which is fixedly connected to the support plate 6, and the other end of which can optionally abut against the lower mold 3. In this embodiment, the spring extends in the vertical direction.
[0040] In this way, by abutting the spring against the lower die 3, the spring is compressed, which allows the spring to store elastic potential energy and release it during the stamping of the sheet 1 to provide support force to the lower die 3. This improves the stability of the edge of the lower die 3 corresponding to the punching position, avoids deformation and chamfering at the punching edge of the sheet 1 due to lack of support, and improves the punching yield.
[0041] It is understandable that the elastic element 5 can also be an airbag, rubber pad, or other structure, as long as it can provide support for the lower mold 3. We will not list them in detail here.
[0042] See Figure 4 In some embodiments, a limiting groove 61 is formed on the surface of the support plate 6 facing the lower mold 3, and one end of the spring facing the support plate 6 is engaged in the limiting groove 61.
[0043] In this embodiment, the limiting groove 61 is provided in a one-to-one correspondence with the spring, and the end of the spring facing the lower mold 3 protrudes from the top surface of the support plate 6.
[0044] Thus, the limiting groove 61 can limit the position of the spring end, prevent the spring from shifting or tilting laterally during the extension and retraction process, and ensure that the elastic force generated by the spring can be stably transmitted to the lower die 3, thereby improving the support force of the lower die 3 and thus improving the punching yield.
[0045] See Figure 3 and Figure 4 In some embodiments, the support plate 6 is connected to a sleeve 62 and a guide post 63. The sleeve 62 is fixedly disposed on the support plate 6, and the guide post 63 is slidably disposed inside the sleeve 62. One end of the guide post 63 is fixedly connected to the lower mold 3 to restrict the movement direction of the support plate 6. Further, in some embodiments, four sleeves 62 are provided, and the four sleeves 62 are respectively disposed at the four corners of the support block 4. In this embodiment, both the sleeves 62 and the guide posts 63 extend in a vertical direction, and the sleeves 62 and guide posts 63 are arranged in a one-to-one correspondence.
[0046] Thus, by setting the sleeve 62 and the guide post 63, the guide post 63 slides inside the sleeve 62, which allows the support plate 6 to move only in the vertical direction, so that the support block 4 can be precisely aligned with the cutting edge 31 and stably support the sheet 1, and the spring can provide support force around the position where the cutting edge 31 is opened in the lower die 3, thereby improving the punching yield of the sheet 1 and reducing the curling deformation of the punching edge of the sheet 1.
[0047] It is understandable that the number and position of the sleeve 62 and guide post 63 can be adjusted according to actual needs, and will not be listed in detail here.
[0048] See Figure 3 and Figure 4 In some embodiments, a limiting block 631 is connected to the end of the guide post 63 facing away from the lower mold 3. The limiting block 631 is disposed on the side of the sleeve 62 facing away from the support plate 6 to limit the movement distance of the guide post 63 within the sleeve 62. In this embodiment, the limiting block 631 is fixedly connected to the guide post 63, and the diameter of the limiting block 631 is larger than the inner diameter of the sleeve 62.
[0049] Thus, after the guide post 63 moves upward a certain distance within the sleeve 62, the limiting block 631 engages with the sleeve 62 to prevent the guide post 63 from moving further upward, thus avoiding excessive movement of the support block 4 and its exceeding of the cutting edge 31, which would affect the punching effect and improve the stability and safety of the punching die.
[0050] See Figure 4 and Figure 5 In some embodiments, the lower mold 3 has a receiving groove 32 for accommodating the support plate 6 on the side opposite to the upper mold 2, and the receiving groove 32 is connected to the cutting edge 31.
[0051] In this embodiment, the shape of the receiving groove 32 is adapted to the support plate 6, so that when the top surface of the support block 4 is flush with the top surface of the lower mold 3, the support plate 6 is located inside the receiving groove 32.
[0052] Thus, the support plate 6 can be selectively fitted into the receiving groove 32, which can save space in the vertical direction of the die 3, making the punching die structure more compact, and helps to limit the position of the support block 4, preventing the support block 4 and the elastic element 5 from shifting during movement and affecting the punching effect, thereby improving the stability of the punching die.
[0053] See Figure 2 In some embodiments, the punching die further includes a stripping assembly 7, which includes a connecting post 71 and a stripping spring 72. The connecting post 71 is fixedly connected to one of the upper die 2 and the lower die 3, and slidably connected to the other. The stripping spring 72 is sleeved on the connecting post 71, and its two ends abut against the upper die 2 and the lower die 3, respectively.
[0054] In this embodiment, one end of the connecting column 71 is slidably connected to the upper mold 2, and the other end is fixedly connected to the lower mold 3. The stripping spring 72 is disposed between the upper mold 2 and the lower mold 3. When the upper mold 2 moves downward, the stripping spring 72 is compressed. After the punching is completed, the upper mold 2 moves upward, and the stripping spring 72 provides support force to the upper mold 2 so that the upper mold 2 can be separated from the material sheet 1. Two sets of stripping components 7 are provided, and the two sets of stripping components 7 are symmetrically disposed on both sides of the upper mold 2.
[0055] Thus, after the punching is completed, the stripping spring 72 releases elastic potential energy and provides support force to the upper die 2 as it moves upward, so that the upper die 2 can quickly separate from the sheet 1, reducing the risk of the upper die 2 sticking to the sheet 1 and causing the sheet 1 to stretch and deform, thereby improving the punching yield.
[0056] It is understandable that the number and location of the unloading components 7 can be adjusted according to actual needs, and will not be listed in detail here.
[0057] See Figure 5 In some embodiments, the lower mold 3 is provided with a stripping groove 33 at the position corresponding to the cutting edge 31. The stripping groove 33 is connected to the cutting edge 31, and the cross-sectional area of the stripping groove 33 is larger than the cross-sectional area of the cutting edge 31.
[0058] In this embodiment, the shape of the stripping groove 33 is similar to that of the blade 31, and the stripping groove 33 and the blade 31 correspond one-to-one and are coaxially arranged.
[0059] In this way, the stamped sheet 1 falls below the cutting edge 31, and the stripping groove 33 can provide more space for the sheet 1 to separate from the lower die 3, thereby improving the stripping efficiency and reducing the interference between the sheet 1 and the lower die 3, thus preventing the edge of the sheet 1 from deforming.
[0060] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.
Claims
1. A punching die, characterized in that, For punching sheet (1), the punching die includes: Upper die (2), wherein a punch (21) is connected to the upper die (2); The lower die (3) has a cutting edge (31) on its surface facing the upper die (2) corresponding to the position of the punch (21); Support block (4), the support block (4) is slidably disposed on the lower mold (3) and is disposed in a one-to-one correspondence with the cutting edge (31), so that the support block (4) can selectively abut against the material sheet (1); An elastic element (5) is optionally in contact with the lower mold (3); The support plate (6), the support block (4) and the elastic element (5) are all disposed on the support plate (6), and the support plate (6) is disposed on the side of the lower mold (3) away from the upper mold (2).
2. The punching die according to claim 1, characterized in that, Multiple elastic elements (5) are provided, and the multiple elastic elements (5) are symmetrically arranged at both ends of the support plate (6).
3. The punching die according to claim 1, characterized in that, The elastic element (5) is a spring, one end of which is fixedly connected to the support plate (6), and the other end is selectively abutted against the lower mold (3).
4. The punching die according to claim 3, characterized in that, The support plate (6) has a limiting groove (61) on its surface facing the lower mold (3), and one end of the spring facing the support plate (6) is engaged in the limiting groove (61).
5. The punching die according to claim 1, characterized in that, The support plate (6) is connected to a sleeve (62) and a guide post (63). The sleeve (62) is fixedly installed on the support plate (6), and the guide post (63) is slidably installed inside the sleeve (62). One end of the guide post (63) is fixedly connected to the lower mold (3) to restrict the movement direction of the support plate (6).
6. The punching die according to claim 5, characterized in that, The guide post (63) is connected to a limiting block (631) at one end away from the lower mold (3). The limiting block (631) is located on the side of the sleeve (62) away from the support plate (6) to limit the movement distance of the guide post (63) within the sleeve (62).
7. The punching die according to claim 5, characterized in that, Four sleeves (62) are provided, and the four sleeves (62) are respectively provided at the four corners of the support block (4).
8. The punching die according to any one of claims 1-7, characterized in that, The lower mold (3) has a receiving groove (32) on the side opposite to the upper mold (2) for accommodating the support plate (6), and the receiving groove (32) is connected to the cutting edge (31).
9. The punching die according to any one of claims 1-7, characterized in that, The punching die also includes a stripping assembly (7), which includes a connecting post (71) and a stripping spring (72). The connecting post (71) is fixedly connected to one of the upper die (2) and the lower die (3), and slidably connected to the other. The stripping spring (72) is sleeved on the connecting post (71), and its two ends abut against the upper die (2) and the lower die (3) respectively.
10. The punching die according to any one of claims 1-7, characterized in that, The lower mold (3) is provided with a stripping groove (33) corresponding to the position of the cutting edge (31). The stripping groove (33) is connected to the cutting edge (31), and the cross-sectional area of the stripping groove (33) is larger than the cross-sectional area of the cutting edge (31).