side punch die
By introducing limiting components and elastic components into the side punch die, the problem of wedge block movement was solved, achieving stable punch movement and improving die life, thus ensuring workpiece punching quality and die durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN CHANGHONG JIJA PRECISION IND CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-19
AI Technical Summary
Existing side punch dies lack effective vertical limiting during the lateral movement of the wedge block, causing the wedge block to easily move up and down, resulting in abnormal collisions between the punch and die, reduced quality of the punched edge of the workpiece, and shortened die life.
Introducing limiting components and elastic components into the side punching die, the elastic force of the elastic component vertically constrains the wedge block, and combined with the guide structure, ensures the stable movement of the wedge block and avoids it from shifting.
It effectively eliminates the movement of the wedge block, ensures that the punch is accurately inserted into the die, reduces burrs, reduces abnormal wear of the punch and die, and improves the service life of the mold.
Smart Images
Figure CN224372550U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold equipment technology, and in particular to a side punch mold. Background Technology
[0002] In existing side punch dies, the upper die base drives the insert punch downwards, and during the downward movement of the insert punch, it drives the side punch assembly to move to the right. During the rightward movement of the punch of the side punch assembly, the side punching operation on the workpiece is completed.
[0003] Chinese utility model patent CN210847915U discloses a side-punch die, including an upper die and a lower die base. The upper die includes an upper die base, an upper stripper plate, and a cutting punch. The left side wall of the cutting punch mates with a cutting rest on the lower die base. A first wedge surface is provided on the lower right part of the cutting punch. A wedge block is slidably mounted on the lower die base. A second wedge surface that mates with the first wedge surface is provided on the upper left part of the wedge block. A punch pad is connected to the right wall of the wedge block. A punch fixing plate is connected to the right wall of the punch pad. A punch is provided on the fixed plate, and a stripper plate is fitted to the punch. A nitrogen spring abuts between the stripper plate and the punch fixing plate. A guide stroke hook is screwed onto the stripper plate. A guide slider is provided at the left end of the guide stroke hook. A guide groove is provided on the punch pad and the punch fixing plate to cooperate with the guide slider. The guide groove and the guide slider are slidably engaged. The punch is fitted with a die located on the right side of the stripper plate. A die fixing plate is installed on the lower die base. The die is installed on the die fixing plate. A blanking hole that cooperates with the die is passed through the die fixing plate and the lower die base.
[0004] While the aforementioned technology can achieve side punching of workpieces, in practical applications, when the wedge block moves laterally under the drive of the punch, the lack of an effective vertical limiting structure causes it to easily move up and down, resulting in vertical displacement. Simultaneously, the lack of a guiding mechanism for the engagement between the punch and die, coupled with the rigid connection between the wedge block and the punch, causes synchronous displacement fluctuations in the punch. This instability leads to abnormal contact between the punch and die during stamping, potentially causing the following problems in long-term mass production: firstly, accelerated wear at the cutting edges of the punch and die due to abnormal collisions; secondly, decreased quality of the punched edge and a significant increase in burrs; and thirdly, a shortened die lifespan. Utility Model Content
[0005] To address the technical problem that existing side punch dies lack effective restraint on the inclined wedge blocks during lateral movement, leading to increased burrs on the workpiece and easy damage to the die, this utility model provides a side punch die.
[0006] The technical solution adopted by this utility model to solve its technical problem is:
[0007] A side-punch die includes an upper die and a lower die. The upper die includes an upper die base and a cutting punch. The cutting punch is vertically mounted at the bottom of the upper die base. A first wedge surface is provided on the lower right side of the cutting punch. The lower die includes a lower die base and a wedge block. The wedge block is slidably mounted on the lower die base in the horizontal direction. A second wedge surface that mates with the first wedge surface is provided on the upper left side of the wedge block. A punch fixing plate is fixedly connected to the right wall of the wedge block. A punch is fixedly mounted on the punch fixing plate. The punch mates with a die located to the right of the punch. A die fixing plate is fixedly mounted on the lower die base. The die is fixedly mounted on the die fixing plate. A blanking hole that mates with the die is passed through the die fixing plate. A limit member and an elastic component are provided below the upper die base. The elastic component is connected between the upper die base and the limit member. A first limiting part is provided below the limit member. During the entire process of the wedge block moving to the right, the first limiting part maintains extrusion contact with the top surface of the wedge block by relying on the elastic force of the elastic component.
[0008] Furthermore, the right wall of the wedge block is provided with a guide post that can slide left and right in the horizontal direction, and the die is provided with a first guide hole, with the guide post and the first guide hole having a clearance fit.
[0009] Furthermore, a stripper plate is fitted onto the punch, and a nitrogen spring connects the stripper plate to the punch fixing plate.
[0010] Furthermore, a second guide hole is provided on the stripper plate, and the guide post is fitted with the second guide hole with a clearance fit.
[0011] Furthermore, a second limiting part is provided below the limiting member. During the entire process of the wedge block moving to the right, the second limiting part, relying on the elastic force of the elastic component, tends to contact the outer wall of the die in the direction perpendicular to the punching direction, so as to abut a part of the workpiece against the outer wall of the die.
[0012] Furthermore, a reset assembly is installed on the lower mold base. The reset assembly is connected to the wedge block and is used to drive the wedge block to reset to the left.
[0013] Furthermore, the reset assembly is located on the left side of the wedge block. The reset assembly includes a first connecting post and a first spring. The first end of the first connecting post is connected to the wedge block, and the second end of the first connecting post has a third limiting part. The first connecting post is slidably mounted on the lower mold base in the horizontal direction. The first spring is sleeved on the first connecting post. One end of the first spring abuts against the third limiting part, and the other end of the first spring abuts against the lower mold base. During the entire process of the wedge block moving to the right, the first spring is compressed, and the wedge block resets to the left by the elastic force of the first spring.
[0014] Furthermore, the lower die base is provided with a tool holder, which has a vertically arranged right side wall, and the left side wall of the insert punch slides in a vertical direction with the right side wall of the tool holder.
[0015] Furthermore, the tool holder includes a main body and a wear-resistant plate. The wear-resistant plate is located on the right side of the main body, and the left side wall of the insert punch slides vertically with the outer surface of the wear-resistant plate.
[0016] Furthermore, the elastic component includes a second connecting post and a second spring. The first end of the second connecting post is fixedly connected to the upper mold base, and the second connecting post is slidably connected to the limiting member in the vertical direction. The second end of the second connecting post has a limiting block for limiting the movement of the limiting member. The second spring is sleeved on the second connecting post, with one end of the second spring abutting against the upper mold base and the other end of the second spring abutting against the limiting member. During the entire process of the wedge block moving to the right, the second spring is compressed, and the first limiting part maintains a squeezing contact with the top surface of the wedge block by relying on the elastic force of the second spring.
[0017] The beneficial effects of this utility model are:
[0018] This invention adds a limiting component below the upper die base, which is connected to the upper die base via an elastic component. The limiting component has a first limiting part, which maintains elastic contact with the top surface of the wedge block throughout its rightward movement under the continuous elastic force of the elastic component. This design effectively constrains the wedge block vertically, allowing it to slide only horizontally, eliminating vertical movement. The stability of the wedge block's movement is directly transmitted to the connected punch, ensuring precise insertion of the punch into the die, maintaining a stable punching clearance, and reducing burrs on the punched edges. Furthermore, the precise insertion of the punch into the die eliminates the risk of abnormal collisions between the punch and die caused by wedge block movement, effectively reducing abnormal wear and thus improving the overall service life of the die. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the upper die base of the side punch die before it moves downwards.
[0020] Figure 2 This is a schematic diagram of the upper die base of the side punch mold of this utility model after it moves downward;
[0021] The markings in the diagram are as follows: 1-Upper die base, 2-Punch-off punch, 3-First wedge surface, 4-Lower die base, 5-Wedge block, 6-Second wedge surface, 7-Punch fixing plate, 8-Punch, 9-Die, 10-Die fixing plate, 11-Dumping hole, 12-Limiting component, 13-First limiting part, 14-Guide post, 15-Stripping plate, 16-Nitrogen spring, 17-Second limiting part, 18-First connecting post, 19-First spring, 20-Third limiting part, 21-Tool holder, 22-Second connecting post, 23-Second spring, 24-Workpiece. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the present invention will be further described below with reference to the accompanying drawings.
[0023] First, it should be stated that the technical solutions of the embodiments of this application are clearly and completely described. The described embodiments are only some of the embodiments of this application, and not a limitation of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.
[0024] In the description of this utility model, it should be understood that the terms "first", "second", "upper", "lower", "left", "right", "inner", "outer", "axial" or "radial" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and are not intended to indicate or imply that the device or element referred to must have a specific orientation structure and operation. Therefore, they should not be construed as limitations on this utility model.
[0025] Reference Figure 1 and Figure 2 This utility model provides a side punching die.
[0026] like Figure 1 and Figure 2 As shown, in some embodiments, a side punch die is provided, including an upper die and a lower die. The upper die includes an upper die base 1 and a cutting punch 2. The cutting punch 2 is vertically mounted at the bottom of the upper die base 1. A first wedge surface 3 is provided on the lower right part of the cutting punch 2. The lower die includes a lower die base 4 and a wedge block 5. The wedge block 5 is slidably mounted on the lower die base 4 in the horizontal direction. A second wedge surface 6 that mates with the first wedge surface 3 is provided on the upper left part of the wedge block 5. A punch fixing plate 7 is fixedly connected to the right wall of the wedge block 5. A punch 8 is fixedly mounted on the punch fixing plate 7. The punch 8 mates with a recess located on the right side of the punch 8. The mold 9 has a die fixing plate 10 fixedly installed on the lower mold base 4. The die 9 is fixedly installed on the die fixing plate 10. The die fixing plate 10 has a blanking hole 11 that mates with the die 9. The upper mold base 1 is provided with a limiting member 12 and an elastic component below it. The elastic component is connected between the upper mold base 1 and the limiting member 12. The limiting member 12 is provided with a first limiting part 13 below it. The first limiting part 13 can be integrally formed with the limiting member 12 or can be additionally fixed. During the entire process of the wedge block 5 moving to the right, the first limiting part 13 maintains a squeezing contact with the top surface of the wedge block 5 by relying on the elastic force of the elastic component.
[0027] Clearly, before the inserting punch 2 contacts the wedge block 5, the first limiting part 13 should be in pressing contact with the top surface of the wedge block 5. This ensures that the first limiting part 13 presses against the top surface of the wedge block 5 throughout the entire process of the inserting punch 2 driving it to the right, preventing the wedge block 5 from moving up and down. The elastic force of the elastic component is determined based on the actual measured force generated by the up-and-down movement of the wedge block 5. When the first limiting part 13 first contacts the wedge block 5, the initial elastic force of the elastic component must be greater than the maximum lateral force of the wedge block 5. This is adjusted for applicability based on actual working conditions. To achieve pressing contact between the first limiting part 13 and the top surface of the wedge block 5 before the inserting punch 2 contacts the wedge block 5, the downward displacement required for the first limiting part 13 to contact the top surface of the wedge block 5 should be less than the downward displacement required for the inserting punch 2 to contact the wedge block 5.
[0028] Regarding the specific configuration of the elastic component, for example, the elastic component includes a guide and an elastic element. The guide includes a guide post and a guide sleeve to ensure that the limiting element 12 moves in the vertical direction, preventing it from tilting, twisting, or shifting under the action of elastic force, and ensuring that the first limiting part 13 can always uniformly and stably press the top surface of the wedge block 5. The end of the guide post has a limiting structure, such as a limiting block, to prevent the limiting element 12 from falling off and to ensure that the limiting element 12 moves upward when the upper mold base 1 moves upward; an additional connecting structure can also be provided to connect the limiting element 12 and the upper mold base 1, ensuring that the limiting element 12 can follow the upper mold base 1 upward when it moves upward. For the elastic element, a regular compression spring or a nitrogen spring 16 can be selected. It can be directly sleeved on the guide post or connected separately between the limiting part 12 and the upper mold base 1. When the first limiting part 13 just contacts the top surface of the wedge block 5, the regular compression spring or nitrogen spring 16 should be in a compressed state, and its compression force should be greater than the maximum lateral force of the wedge block 5 to ensure the stable horizontal movement of the wedge block 5.
[0029] like Figure 1 and Figure 2 As shown, in some embodiments, the elastic component includes a second connecting post 22 and a second spring 23. The first end of the second connecting post 22 is fixedly connected to the upper mold base 1. The second connecting post 22 is slidably connected to the limiting member 12 in the vertical direction. The second end of the second connecting post 22 has a limiting block for limiting the movement of the limiting member 12, ensuring that when the upper mold base 1 moves upward, the limiting block can abut against the limiting member 12 and drive it upward. When the limiting member 12 moves downward, it prevents it from falling off. The second spring 23 is sleeved on the second connecting post 22. One end of the second spring 23 abuts against the upper mold base 1, and the other end of the second spring 23 abuts against the limiting member 12. During the entire process of the wedge block 5 moving to the right, the second spring 23 is compressed. The first limiting part 13 maintains a squeezing contact with the top surface of the wedge block 5 by the elastic force of the second spring 23.
[0030] like Figure 1 and Figure 2 As shown, in some embodiments, the right wall of the wedge block 5 is provided with a guide post 14 that can slide left and right in the horizontal direction, and the die 9 is correspondingly provided with a first guide hole, with the guide post 14 and the first guide hole having a clearance fit. This design further increases the movement accuracy of the punch 8, ensures that the punching clearance between the punch 8 and the die 9 is stable and reasonable, avoids mutual collision and wear between the punch 8 and the die 9, and thus ensures that the workpiece 24 has small and few burrs. Preferably, the guide post 14 and the first guide hole maintain a clearance fit throughout the entire process before and after punching.
[0031] like Figure 1 and Figure 2 As shown, in some embodiments, a stripper plate 15 is fitted onto the punch 8, and a nitrogen spring 16 connects the stripper plate 15 and the punch fixing plate 7. The stripper plate 15 is used to scrape off the workpiece 24 from the punch 8. The nitrogen spring 16 can effectively prevent elastic failure and has a longer service life. Preferably, the stripper plate 15 has a mating hole, and the punch 8 passes through the mating hole. Furthermore, the stripper plate 15 has a second guide hole, and the guide post 14 is clearance-fitted with the second guide hole, thus ensuring that the stripper plate 15 moves stably along the guide post 14 under the drive of the nitrogen spring 16. In addition, the stripper plate 15 may not be in contact with the guide post 14 or the punch 8. An additional guide structure can be provided to guide the movement of the stripper plate 15. There is no need to emphasize whether the stripper plate 15 is in contact with the guide post 14 or the punch 8. The stripper plate 15 moves to the right under the elastic force of the nitrogen spring 16, ensuring that the stripper plate 15 can scrape the workpiece 24 on the punch 8.
[0032] like Figure 1 and Figure 2 As shown, in some embodiments, a second limiting part 17 is provided below the limiting member 12. The second limiting part 17 can be integrally formed with the limiting member 12 or can be additionally fixed. During the entire process of the wedge block 5 moving to the right, the second limiting part 17, relying on the elastic force of the elastic component, tends to contact the outer wall of the die 9 in the direction perpendicular to the punching direction of the punch 8, so as to press a part of the workpiece 24 against the outer wall of the die 9. Similarly to the first limiting part 13, before the wedge block 5 moves to the right, the second limiting part 17 has already contacted the workpiece 24 and pressed the workpiece 24 onto the die 9, positioning the workpiece 24, ensuring the accurate position of the workpiece 24, preventing its movement, and affecting subsequent punching.
[0033] like Figure 1 and Figure 2As shown, in some embodiments, a reset assembly is installed on the lower mold base 4. The reset assembly is connected to the wedge block 5 and is used to drive the wedge block 5 to reset to the left. The aforementioned embodiments do not mention that the reset assembly resets the wedge block 5. Manual reset can be used, or a telescopic cylinder, telescopic hydraulic cylinder, or spring-like assembly can be used for reset. The reset assembly can be located on the left or right side of the wedge block 5, as long as it can push or pull the wedge block 5 back to its initial position.
[0034] like Figure 1 and Figure 2 As shown, specifically, the reset assembly can be configured as follows: the reset assembly is located to the left of the wedge block 5. The reset assembly includes a first connecting post 18 and a first spring 19. The first end of the first connecting post 18 is connected to the wedge block 5, and the second end of the first connecting post 18 has a third limiting part 20. The first connecting post 18 is slidably mounted on the lower mold base 4 in the horizontal direction. The first spring 19 is sleeved on the first connecting post 18. One end of the first spring 19 abuts against the third limiting part 20, and the other end of the first spring 19 abuts against the lower mold base 4. During the entire process of the wedge block 5 moving to the right, the first spring 19 is compressed, and the wedge block 5 resets to the left by the elastic force of the first spring 19.
[0035] The first connecting post 18 is slidably mounted on the lower mold base 4 in the horizontal direction. The first connecting post 18 can be directly slidably mounted on the lower mold base 4, or indirectly mounted on the lower mold base 4. Specifically, a mounting structure with holes is provided on the lower mold base 4, and the first connecting post 18 passes through the holes and can slide within them, thus achieving sliding mounting. Alternatively, the mounting structure can have guide grooves, and the first connecting post 18 is equipped with sliders that cooperate with the guide grooves, thus achieving sliding mounting. Other sliding mounting methods, such as slide rails, can also be used.
[0036] like Figure 1 and Figure 2 As shown, in some embodiments, the lower die holder 4 is provided with a tool holder 21, which has a vertically arranged right side wall. The left side wall of the insert punch 2 slides vertically against the right side wall of the tool holder 21. The core function of the tool holder 21 is to provide precise vertical guidance and strong lateral support for the insert punch 2. During the downward movement of the insert punch 2, its left side wall slides tightly against the right side wall of the tool holder 21. This sliding fit ensures that the insert punch 2 maintains strict verticality throughout its stroke, preventing it from tilting or wobbling, which is crucial for stamping accuracy. The tool holder 21 here can also serve as the mounting structure for the first connecting post 18; that is, the first connecting post 18 is mounted on the tool holder 21.
[0037] like Figure 1 and Figure 2As shown, the tool holder 21 further includes a main body and a wear-resistant plate. The wear-resistant plate is located on the right side of the main body. The left side wall of the insert punch 2 slides vertically with the outer surface of the wear-resistant plate. The wear-resistant plate that mates with the insert punch 2 is provided on the tool holder 21, which reduces the wear rate between the insert punch 2 and the tool holder 21 and improves the service life of the mold. When the wear-resistant plate wears to a certain extent, only a new wear-resistant plate needs to be replaced, without replacing the entire tool holder 21, thus reducing maintenance costs.
Claims
1. A side punch die, comprising an upper die and a lower die. The upper die comprises an upper die base (1) and a cutting punch (2). The cutting punch (2) is vertically mounted at the bottom of the upper die base (1). The lower right part of the cutting punch (2) is provided with a first inclined wedge surface (3). The lower die comprises a lower die base (4) and an inclined wedge block (5). The inclined wedge block (5) is slidably mounted on the lower die base (4) in the horizontal direction. The upper left part of the inclined wedge block (5) is provided with a second inclined wedge surface (3) that cooperates with the first inclined wedge surface (3). The right wall of the wedge (6) and the inclined wedge block (5) is fixedly connected to a punch fixing plate (7), a punch (8) is fixedly provided on the punch fixing plate (7), the punch (8) is matched with a die (9) located on the right side of the punch (8), the lower die base (4) is fixedly installed with a die fixing plate (10), the die (9) is fixedly installed on the die fixing plate (10), and the die fixing plate (10) has a blanking hole (11) that matches the die (9) through it. The characteristic is that A limiting component (12) and an elastic component are provided below the upper mold base (1). The elastic component is connected between the upper mold base (1) and the limiting component (12). A first limiting part (13) is provided below the limiting component (12). During the entire process of the wedge block (5) moving to the right, the first limiting part (13) maintains a squeezing contact with the top surface of the wedge block (5) by relying on the elastic force of the elastic component.
2. The side punch die as described in claim 1, characterized in that, The right wall of the wedge block (5) is provided with a guide post (14) that can slide left and right in the horizontal direction, and the die (9) is provided with a first guide hole, with the guide post (14) and the first guide hole having a clearance fit.
3. The side punch die as described in claim 2, characterized in that, A stripper plate (15) is fitted on the punch (8), and a nitrogen spring (16) is connected between the stripper plate (15) and the punch fixing plate (7).
4. The side punch die as described in claim 3, characterized in that, The stripper plate (15) has a second guide hole, and the guide post (14) is fitted with the second guide hole with a clearance.
5. The side punch die as described in claim 1, characterized in that, A second limiting part (17) is provided below the limiting member (12). During the entire process of the wedge block (5) moving to the right, the second limiting part (17) relies on the elastic force of the elastic component to tend to contact the outer wall of the die (9) in the direction perpendicular to the punching direction of the punch (8), so as to abut a part of the workpiece (24) against the outer wall of the die (9).
6. The side punch die as described in claim 1, characterized in that, A reset assembly is installed on the lower mold base (4). The reset assembly is connected to the wedge block (5) and is used to drive the wedge block (5) to reset to the left.
7. The side punch die as described in claim 6, characterized in that, The reset assembly is located on the left side of the wedge block (5). The reset assembly includes a first connecting post (18) and a first spring (19). The first end of the first connecting post (18) is connected to the wedge block (5). The second end of the first connecting post (18) has a third limiting part (20). The first connecting post (18) is slidably mounted on the lower mold base (4) in the horizontal direction. The first spring (19) is sleeved on the first connecting post (18). One end of the first spring (19) abuts against the third limiting part (20), and the other end of the first spring (19) abuts against the lower mold base (4). During the entire process of the wedge block (5) moving to the right, the first spring (19) is compressed. The wedge block (5) is reset to the left by the elastic force of the first spring (19).
8. The side punch die as described in claim 1, characterized in that, The lower die holder (4) is provided with a tool holder (21), which has a vertically arranged right side wall. The left side wall of the insert punch (2) and the right side wall of the tool holder (21) slide together in the vertical direction.
9. The side punch die as described in claim 8, characterized in that, The tool holder (21) includes a main body and a wear plate. The wear plate is located on the right side of the main body, and the left side wall of the insert punch (2) slides in a vertical direction with the outer surface of the wear plate.
10. The side punch die according to any one of claims 1 to 9, characterized in that, The elastic component includes a second connecting post (22) and a second spring (23). The first end of the second connecting post (22) is fixedly connected to the upper mold base (1). The second connecting post (22) is slidably connected to the limiting member (12) in the vertical direction. The second end of the second connecting post (22) has a limiting block for limiting the movement of the limiting member (12). The second spring (23) is sleeved on the second connecting post (22). One end of the second spring (23) abuts against the upper mold base (1), and the other end of the second spring (23) abuts against the limiting member (12). During the entire process of the wedge block (5) moving to the right, the second spring (23) is compressed. The first limiting part (13) relies on the elastic force of the second spring (23) to maintain a squeezing contact with the top surface of the wedge block (5).