Split type stamping upper die, stamping and shearing machine and press machine
By using the inclined contact connection design of the split stamping upper die, the problems of complex maintenance and insufficient rigidity of the one-piece upper die are solved, achieving cost reduction, rigidity improvement and precision assurance, which is suitable for punching and shearing machines and presses.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HOMEFRIEND & FUJI ELEVATOR CO LTD
- Filing Date
- 2025-02-26
- Publication Date
- 2026-05-08
AI Technical Summary
The one-piece upper die in existing stamping equipment is complicated and costly to repair when damaged. Insufficient overall rigidity leads to unstable processing accuracy and poor maintenance and operability.
The design adopts a split stamping upper die, and the punch can be disassembled and replaced through the inclined contact connection between the locking sleeve, die sleeve and punch. The inclined contact also improves the compressive rigidity and connection stability.
It reduces production costs, improves the compressive rigidity and connection stability of the mold, ensures that the processing accuracy is not affected, and facilitates maintenance and adaptability to punches of different sizes.
Smart Images
Figure CN224208939U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of stamping die technology, and in particular to a split-type stamping upper die, a punching and shearing machine, and a press. Background Technology
[0002] In existing stamping equipment, a one-piece upper die core is typically used for processing. Due to its simple structure achieved through integral casting, it exhibits excellent rigidity and strength. This design ensures the die remains stable even under high forming forces. However, due to the characteristics of integral casting, repairs are extremely complex and costly once the die is damaged. Furthermore, the one-piece structure offers poor operability for die adjustment and maintenance, especially when the blank holder core lamination ratio needs adjustment, as the overall lamination work is extensive, time-consuming, and labor-intensive. Adjustments to this structure may require disassembling multiple components, increasing maintenance complexity and time costs.
[0003] The split upper mold core design significantly improves the flexibility and maintainability of the mold, but its overall rigidity is insufficient compared to a one-piece structure. This disadvantage in rigidity may cause the mold to deform under high pressure, thus affecting the forming accuracy. Utility Model Content
[0004] To address the shortcomings of existing technologies, this invention provides a split-type stamping upper die, punching and shearing machine, and press. By fitting the punch and die sleeve into a locking sleeve and then connecting it to the processing equipment through locking, only the punch needs to be replaced when the upper die wears out, thus reducing production costs. The punch, die sleeve, and locking sleeve all have inclined surface contact, which improves the overall compressive rigidity.
[0005] To address the aforementioned technical problems, this utility model provides a split-type stamping upper die in a first aspect, comprising: a locking sleeve with an opening in the middle; a first end of the locking sleeve being detachably connected to the power output end of a processing equipment; the inner wall radius of the second end of the locking sleeve gradually narrowing along the side of the locking sleeve away from the processing equipment, forming a first connecting slope; a fixing component including at least one die sleeve fitted inside the locking sleeve; the outer wall of the die sleeve abutting against the first connecting slope, and the inner ring of the die sleeve having a second connecting slope; a punch, one end of which abuts against the power output end of the processing equipment, and the other end of the punch passing through the die sleeve and the locking sleeve in sequence; the outer wall of the punch having a third connecting slope, and the third connecting slope abutting against the second connecting slope.
[0006] As an improvement to the above solution, the mold includes: a main sleeve body; a connecting ring connected to one end of the main sleeve body near the processing equipment, the radius of the connecting ring gradually increasing along the side near the processing equipment; the outer wall of the connecting ring abuts against the first connecting inclined surface, and the circumferential inner wall of the connecting ring is a second connecting inclined surface.
[0007] As an improvement to the above solution, the fixing component includes two molds: a first mold, which is fitted inside the locking sleeve; the outer wall of the first mold abuts against the first connecting inclined surface; and a second mold, which is fitted inside the first mold, the outer wall of the second mold abuts against the second connecting inclined surface on the first mold, and the second connecting inclined surface on the second mold abuts against the third connecting inclined surface.
[0008] As an improvement to the above solution, the punch includes: a punch body; a connecting part, one end of which is connected to the punch body, and the other end of which abuts against the power output end of the processing equipment. The cross-sectional radius of the connecting part gradually increases from the side connected to the punch body to the other side, and the circumferential outer wall of the connecting part is a third connecting slope.
[0009] As an improvement to the above solution, a connecting unit is also provided on the inner wall of the first end of the locking sleeve, which is used to connect to the power output end of the processing equipment.
[0010] As an improvement to the above solution, the connecting unit is an internal thread disposed within the locking sleeve.
[0011] As an improvement to the above solution, at least one fastening groove is provided on the outer wall of the locking sleeve.
[0012] As an improvement to the above solution, the angle of inclination of the connecting ring to the horizontal plane is equal to the angle of inclination of the first connecting inclined plane to the horizontal plane, which is equal to the angle of inclination of the third connecting inclined plane to the horizontal plane.
[0013] In a second aspect, this utility model provides a punching and shearing machine, wherein the pressure head of the punching and shearing machine is connected to the split-type upper punching die.
[0014] In a third aspect, this utility model provides a press, wherein the split-type upper stamping die is connected to the die handle of the press.
[0015] The beneficial effects of implementing this utility model are as follows:
[0016] This utility model discloses a split-type stamping upper die. By fitting the punch and die sleeve into a locking sleeve and then connecting it to the processing equipment through locking, only the punch needs to be replaced when wear occurs, reducing production costs. The punch, die sleeve, and locking sleeve all have beveled contact, which can provide a larger contact area at the same axial distance, thereby distributing the load and improving the overall compressive rigidity. During assembly, the beveled fit can generate preload using the wedge principle, making the parts fit more tightly, reducing relative movement, and improving the stability of the connection. The beveled contact can provide additional anti-overturning moment, making the structure more stable when subjected to bending moment. While ensuring the flexibility and maintainability of the die, the overall rigidity of the upper die is guaranteed, ensuring that the processing accuracy is not affected.
[0017] This utility model discloses a split-type stamping upper die, which can be adapted to punches of different sizes by adjusting the number of die sleeves. It can also be used on both punching and shearing machines and presses. It is easy to assemble and disassemble and has a wide range of applications. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of a split-type stamping upper die in this embodiment;
[0019] Figure 2 This is an exploded cross-sectional view of a split-type stamping upper die in this embodiment;
[0020] Figure 3 This is a schematic diagram of the structure of the first module in this embodiment;
[0021] Figure 4 This is a schematic diagram of a split-type stamping upper die installed on the die handle of a press in this embodiment.
[0022] The reference numerals in the attached drawings are explained as follows: 100, locking sleeve; 110, first connecting slope; 120, fastening groove; 200, fixing component; 210, first mold sleeve; 211, main sleeve body; 212, connecting ring; 220, second mold sleeve; 230, second connecting slope; 300, punch; 310, connecting part; 311, third connecting slope; 400, mold handle. Detailed Implementation
[0023] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.
[0024] See Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a split-type stamping upper die in this embodiment; Figure 2This is an exploded cross-sectional view of a split-type stamping upper die in this embodiment; as shown, it includes: a locking sleeve 100 with an opening in the middle; the first end of the locking sleeve 100 is detachably connected to the power output end of the processing equipment; the inner radius of the second end of the locking sleeve 100 gradually narrows along the side of the locking sleeve 100 away from the processing equipment, forming a first connecting slope 110; a fixing component 200, including at least one die sleeve, which is fitted inside the locking sleeve 100; the outer wall of the die sleeve abuts against the first connecting slope 110, and the inner ring of the die sleeve is provided with a second connecting slope 230; a punch 300, one end of which abuts against the power output end of the processing equipment, and the other end of the punch 300 passes through the die sleeve and the locking sleeve 100 in sequence; the outer wall of the punch 300 is provided with a third connecting slope 311, which abuts against the second connecting slope 230. By fitting the punch 300 and die sleeve within the locking sleeve 100 and then connecting them to the processing equipment via locking, only the punch 300 needs to be replaced when wear occurs, reducing production costs. The punch 300, die sleeve, and locking sleeve 100 all have beveled contact, providing a larger contact area over the same axial distance, thus distributing the load and improving overall compressive rigidity. During assembly, the beveled fit utilizes the wedge principle to generate preload, ensuring a tighter fit between parts, reducing relative movement, and improving connection stability. The beveled contact provides additional anti-overturning moment, making the structure more stable under bending moment. While ensuring the flexibility and maintainability of the die, the overall rigidity of the upper die is guaranteed, ensuring that processing accuracy is not affected.
[0025] Furthermore, in this embodiment, the fixing component 200 includes two molds: a first mold 210, fitted inside the locking sleeve 100; the outer wall of the first mold 210 abuts against the first connecting inclined surface 110; and a second mold 220, fitted inside the first mold 210, the outer wall of the second mold 220 abutting against the second connecting inclined surface 230 on the first mold 210, and the second connecting inclined surface 230 on the second mold 220 abutting against the third connecting inclined surface 311. By providing two molds, one or two molds can be provided inside the locking sleeve 100 to accommodate punches 300 of different sizes and specifications; in other embodiments, the number of molds can be adjusted to accommodate punches 300 of different sizes, thus having a wide range of applications.
[0026] See Figure 3 , Figure 3 This is a schematic diagram of the structure of the first mold 210 in this embodiment.
[0027] Furthermore, in this embodiment, the first mold sleeve 210 includes: a main sleeve body 211; a connecting ring 212 connected to the end of the main sleeve body 211 near the processing equipment, the radius of the connecting ring 212 gradually increasing along the side near the processing equipment; the outer wall of the connecting ring 212 abuts against the first connecting inclined surface 110, and the circumferential inner wall of the connecting ring 212 is a second connecting inclined surface 230. The outer wall of the connecting ring 212 fitting against the first connecting inclined surface 110 can provide a larger contact area, thereby distributing the load and improving the overall compressive stiffness.
[0028] Furthermore, the second mold 220 has the same structure as the first mold 210.
[0029] See Figure 2 Furthermore, in this embodiment, the punch 300 includes: a punch 300 body; and a connecting portion 310, one end of which is connected to the punch 300 body, and the other end of which abuts against the power output end of the processing equipment. The cross-sectional radius of the connecting portion 310 gradually increases from one side connected to the punch 300 body to the other side, and the circumferential outer wall of the connecting portion 310 is a third connecting inclined surface 311. The third connecting inclined surface 311 fits against the inner wall of the connecting ring 212, which can provide a larger contact area, thereby distributing the load and improving the overall compressive stiffness.
[0030] Furthermore, in this embodiment, a connecting unit is also provided on the inner wall of the first end of the locking sleeve 100. The connecting unit is used to connect to the power output end of the processing equipment. The connecting unit is an internal thread provided in the locking sleeve 100. The locking sleeve 100 and the processing equipment are connected by threads. When fixed, the wedge principle is used to generate a preload force, making the parts fit more tightly, reducing relative movement, and improving the stability of the connection.
[0031] Furthermore, in this embodiment, the outer wall of the locking sleeve 100 is provided with at least one fastening groove 120 to facilitate the use of a wrench to fasten the locking sleeve 100.
[0032] Furthermore, in this embodiment, the inclination angle of the connecting ring 212 with the horizontal plane is equal to the inclination angle of the first connecting inclined surface 110 with the horizontal plane, which is equal to the inclination angle of the third connecting inclined surface 311 with the horizontal plane. Preferably, the inclination angle is 45°~65°.
[0033] This embodiment provides a punching and shearing machine in a second aspect, wherein the pressure head of the punching and shearing machine is connected to the split upper die. Specifically, the locking sleeve 100 is threadedly connected to the pressure head of the punching and shearing machine.
[0034] See Figure 4 , Figure 4This is a schematic diagram of a split-type stamping upper die installed on the die handle 400 of a press in this embodiment.
[0035] As shown in the figure, this embodiment provides a press in a third aspect, wherein the split upper die is connected to the die handle 400 of the press. Specifically, one end of the die handle 400 is fixed in the slider mounting hole of the press, and the other end of the die handle 400 is provided with an external thread, and the die handle 400 is threadedly connected to the locking sleeve 100 through the external thread.
[0036] The beneficial effects of implementing this utility model are as follows: By fitting the punch and die sleeve into the locking sleeve and then connecting them to the processing equipment through locking, only the punch needs to be replaced when wear occurs, reducing production costs; the punch, die sleeve, and locking sleeve all have beveled contact, which can provide a larger contact area at the same axial distance, thereby distributing the load and improving the overall compressive rigidity; during assembly, the beveled fit can generate preload using the wedge principle, making the parts fit more tightly, reducing relative movement, and improving the stability of the connection; the beveled contact can provide additional anti-overturning moment, making the structure more stable when subjected to bending moment; while ensuring the flexibility and maintainability of the mold, the overall rigidity of the upper mold is ensured, ensuring that the processing accuracy is not affected.
[0037] By adjusting the number of die sleeves to accommodate punches of different sizes, it can also be used on both punching and shearing machines and presses. It is easy to assemble and disassemble and has a wide range of applications.
[0038] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model.
Claims
1. A split-type stamping upper die, characterized in that, include: A locking sleeve has an opening in the middle; the first end of the locking sleeve is detachably connected to the power output end of the processing equipment; the inner wall radius of the second end of the locking sleeve gradually narrows along the side of the locking sleeve away from the processing equipment, forming a first connecting slope. A fixing component includes at least one mold sleeve, the mold sleeve being fitted inside the locking sleeve; the outer wall of the mold sleeve abuts against the first connecting inclined surface, and the inner ring of the mold sleeve is provided with a second connecting inclined surface; The punch has one end abutting against the power output end of the processing equipment, and the other end of the punch passes through the die sleeve and the locking sleeve in sequence; a third connecting slope is provided on the outer wall of the punch, and the third connecting slope abuts against the second connecting slope.
2. The split-type stamping upper die according to claim 1, characterized in that, The mold includes: Main body; A connecting ring is connected to the end of the main sleeve that is close to the processing equipment. The radius of the connecting ring gradually increases along the side close to the processing equipment. The outer wall of the connecting ring abuts against the first connecting inclined surface, and the circumferential inner wall of the connecting ring is the second connecting inclined surface.
3. The split-type stamping upper die according to claim 1, characterized in that, The fixing component includes two molds, namely: The first mold sleeve is fitted inside the locking sleeve; the outer wall of the first mold sleeve abuts against the first connecting inclined surface. The second mold sleeve is fitted inside the first mold sleeve. The outer wall of the second mold sleeve abuts against the second connecting slope on the first mold sleeve, and the second connecting slope on the second mold sleeve abuts against the third connecting slope.
4. The split-type stamping upper die according to claim 1, characterized in that, The punch includes: Punch body; The connecting part is connected to the punch body at one end and abuts against the power output end of the processing equipment at the other end. The cross-sectional radius of the connecting part gradually increases from the side connected to the punch body to the other side, and the circumferential outer wall of the connecting part is a third connecting slope.
5. The split-type stamping upper die according to claim 1, characterized in that, The inner wall of the first end of the locking sleeve is also provided with a connecting unit, which is used to connect to the power output end of the processing equipment.
6. The split-type stamping upper die according to claim 5, characterized in that, The connecting unit is an internal thread disposed within the locking sleeve.
7. The split-type stamping upper die according to claim 6, characterized in that, The outer wall of the locking sleeve is provided with at least one fastening groove.
8. The split-type stamping upper die according to claim 2, characterized in that, The angle of inclination of the connecting ring to the horizontal plane is equal to the angle of inclination of the first connecting inclined plane to the horizontal plane, which is equal to the angle of inclination of the third connecting inclined plane to the horizontal plane.
9. A punching and shearing machine, characterized in that, The pressure head of the punching and shearing machine is connected to a split-type upper punching die as described in any one of claims 1 to 8.
10. A press, characterized in that, The press is equipped with a split-type upper stamping die as described in any one of claims 1 to 8.