A punch structure for a gasket stamping equipment

Abstract

This utility model provides a punch structure for a gasket stamping equipment, including a stamping mounting plate and multiple punch mechanisms. A fixing plate is provided at each of the left and right ends of the stamping mounting plate, and the fixing plate is integrally connected to the stamping mounting plate. The fixing plate is used to connect to the upper die base of the stamping equipment. Multiple punch mechanisms are arranged on the stamping mounting plate. Each punch mechanism includes a fixing part, a conical base, a conical self-locking mounting mechanism, a gasket core positioning mechanism, and a cutting edge structure. The punch structure for a gasket stamping equipment described in this utility model solves the problem that the fixing section of the punch structure in related technologies is prone to failure, leading to micron-level positional displacement of the punch during the stamping process, which in turn causes gasket blanking contour deformation, hole position deviation, or uneven burrs, and other quality problems.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and in particular relates to a punch structure for a gasket stamping equipment. Background Technology

[0002] The punch in a gasket stamping machine is the core working part of the mold. Its structure mainly includes three key areas: the cutting edge, the fixed part, and the transition section. The cutting edge directly contacts the material and is responsible for shearing and separating it, requiring extremely high shape accuracy (within ±0.002mm). The fixed part is connected to the punch fixing plate by pressure plate bolts or quick-change chucks to ensure stable positioning. The transition section connects the cutting edge and the fixed part.

[0003] In the gasket stamping process, the structural reliability of the punch fixing section directly affects the machining accuracy. Common failure modes include loosening of the pressure plate bolts due to long-term vibration, wear failure of the contact surface of the interference fit due to repeated disassembly and assembly, and wear of the positioning elements (such as steel balls or chucks) of the quick-change chuck due to frequent operation. Because the fixing section of the punch structure in related technologies is prone to failure, the punch may experience micron-level positional displacement during the stamping process, resulting in quality problems such as gasket blanking contour deformation, hole position deviation, or uneven burrs. In severe cases, it may even lead to collision accidents between the punch and the die. Summary of the Invention

[0004] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A punch structure for a gasket stamping device includes a stamping mounting plate and multiple punch mechanisms;

[0007] A fixing plate is provided at each of the left and right ends of the stamping mounting plate. The fixing plate is integrally connected to the stamping mounting plate and is used to connect the upper die base of the stamping equipment.

[0008] Multiple punch mechanisms are arranged on the stamping mounting plate;

[0009] The punch mechanism includes a fixing part, a conical base, a conical self-locking mounting mechanism, a pad positioning mechanism, and a cutting edge structure. One end of the fixing part is connected to the upper die seat of the stamping equipment, and the other end of the fixing part is fixedly connected to the conical base. The conical self-locking mounting mechanism is located on the lower end face of the stamping mounting plate. The conical base is connected to the conical self-locking mounting mechanism through a conical fit. During the stamping process, the axial pressure is converted into radial constraint force to achieve automatic centering and dynamic locking of the punch axis.

[0010] The bottom of the conical base is connected to the cutting edge structure, and the pad core positioning mechanism is located inside the cutting edge structure.

[0011] Furthermore, the conical self-locking mounting mechanism includes a clamp mounting plate, a positioning sleeve, and multiple centering clamping mechanisms. The clamp mounting plate is a circular plate, and the positioning sleeve is located at the center of the clamp mounting plate. The stamping mounting plate has a pre-set positioning slot that can cooperate with the positioning sleeve. The multiple centering clamping mechanisms are evenly arranged circumferentially on the lower end face of the clamp mounting plate. The clamp mounting plate and the stamping mounting plate are connected by multiple bolts. The conical base is connected to the centering clamping mechanism through a conical fit.

[0012] Furthermore, the centering clamping mechanism includes a C-shaped fixed clamping plate, a limiting rod, and two upright plates. The two upright plates are arranged side by side on the lower end face of the fixture mounting plate. The C-shaped fixed clamping plate is located between the two upright plates and is hinged to the two upright plates via a rotating rod. The limiting rod is disposed on the two upright plates and is used to limit the position of the C-shaped fixed clamping plate. The conical surface of the conical base is provided with an axially extending annular groove array. The end of the C-shaped fixed clamping plate is provided with a wedge-shaped protrusion that engages with the annular groove.

[0013] Furthermore, the number of centering clamping mechanisms is three.

[0014] Furthermore, the fixing part includes a threaded rod and a plurality of spring positioning pins. The bottom of the threaded rod is integrally connected to the top of the conical base. The plurality of spring positioning pins are evenly distributed on the top of the threaded rod, and the spring positioning pins are detachably connected to the threaded rod.

[0015] Furthermore, the cutting edge structure includes a connecting rod and a cutting edge sleeve. The top of the connecting rod is connected to the bottom of the conical base, the cutting edge sleeve is disposed at the bottom of the connecting rod, and the pad core positioning mechanism is disposed inside the cutting edge sleeve.

[0016] Furthermore, the pad core positioning mechanism includes a positioning plate, a slide rod, a pad core pressure plate, a spring, and two nuts. The connecting rod has a hollow internal structure. The positioning plate is located inside the connecting rod and is equipped with a linear bearing. The slide rod passes through the linear bearing and slides with it. Two nuts are provided at the top of the slide rod. The bottom of the slide rod is integrally connected to the pad core pressure plate. The spring is sleeved on the slide rod and is located between the positioning plate and the pad core pressure plate.

[0017] Compared with the prior art, the punch structure of the gasket stamping equipment described in this utility model has the following advantages:

[0018] 1. The advantage of the conical self-locking mounting mechanism lies in its ability to achieve adaptive stability of the punch under dynamic working conditions through the principle of mechanical transmission. When the stamping equipment applies vertically downward axial pressure, the tapered fit between the conical base and the centering clamping mechanism converts the axial force into a radial expansion force, forcing the wedge-shaped protrusion of the C-shaped fixing plate to tightly embed into the annular groove of the conical base, forming a multi-directional synchronous locking effect. The self-locking mechanism driven by kinetic energy not only eliminates the risk of gradual loosening caused by vibration in traditional bolt fixing, but also dynamically strengthens the radial constraint in each stamping stroke, ensuring that the punch axis and the die center always remain precisely aligned.

[0019] 2. The circumferentially distributed centering clamping mechanism generates a uniformly distributed radial clamping force under the cooperation of the conical surface, which effectively counteracts the lateral impact caused by material deformation during the punching process; enabling the punch to maintain positioning accuracy and have structural reliability to resist complex alternating stress during high-speed continuous punching, fundamentally solving the problem of dimensional drift caused by fixing failure of traditional punches. Attached Figure Description

[0020] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0021] Figure 1 This is a schematic diagram of the punch structure of a gasket stamping device according to an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the fixing part structure according to an embodiment of the present utility model;

[0023] Figure 3 This is a schematic diagram of the conical self-locking mounting mechanism described in an embodiment of the present utility model;

[0024] Figure 4 This is a cross-sectional view of the punch mechanism described in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the centering and clamping mechanism described in an embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Stamped mounting plate; 110. Fixing plate; 200. Cutting edge structure; 210. Connecting rod; 300. Threaded rod; 310. Spring positioning pin; 320. Conical base; 400. Fixture mounting plate; 410. Positioning sleeve; 500. Centering clamping mechanism; 510. C-type fixing clamp; 520. Vertical plate; 530. Limiting rod; 600. Pad core positioning mechanism. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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.

[0031] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] A punch structure for a gasket stamping device, such as Figure 1 As shown, it includes a stamping mounting plate 100 and multiple punch mechanisms; a fixing plate 110 is provided at each of the left and right ends of the stamping mounting plate 100, and the fixing plate 110 is integrally connected to the stamping mounting plate 100. The fixing plate 110 is used to connect the upper die base of the stamping equipment; multiple punch mechanisms are arranged on the stamping mounting plate 100.

[0033] The punch mechanism includes a fixing part, a conical base 320, a conical self-locking mounting mechanism, a core positioning mechanism 600, and a cutting edge structure 200. One end of the fixing part is connected to the upper die seat of the stamping equipment, and the other end of the fixing part is fixedly connected to the conical base 320. The conical self-locking mounting mechanism is set on the lower end face of the stamping mounting plate 100. The conical base 320 is connected to the conical self-locking mounting mechanism through conical surface mating. During the stamping process, the axial pressure is converted into radial constraint force to realize automatic centering and dynamic locking of the punch axis. The bottom of the conical base 320 is connected to the cutting edge structure 200, and the core positioning mechanism 600 is set inside the cutting edge structure 200.

[0034] The conical self-locking mounting mechanism includes a fixture mounting plate 400, a positioning sleeve 410, and multiple centering clamping mechanisms 500. The fixture mounting plate 400 is a circular plate, with the positioning sleeve 410 positioned at its center. A pre-set positioning slot is located on the stamping mounting plate 100, which engages with the positioning sleeve 410. Multiple centering clamping mechanisms 500 are evenly arranged circumferentially on the lower surface of the fixture mounting plate 400. The fixture mounting plate 400 and the stamping mounting plate 100 are connected by multiple bolts. The conical base 320 is connected to the centering clamping mechanisms 500 via a conical fit. There are three centering clamping mechanisms 500. The advantage of the conical self-locking mounting mechanism lies in achieving adaptive stability of the punch under dynamic working conditions through the principle of mechanical transmission. When the stamping equipment applies a vertically downward axial pressure, the tapered fit between the conical base 320 and the centering clamping mechanism 500 converts the axial force into a radial expansion force, forcing the wedge-shaped protrusion of the C-shaped fixing plate 510 to tightly embed into the annular groove of the conical base 320, forming a multi-directional synchronous locking effect. The self-locking mechanism driven by kinetic energy not only eliminates the risk of gradual loosening caused by vibration in traditional bolt fixing, but also dynamically strengthens the radial constraint in each stamping stroke, ensuring that the punch axis and the die center always remain precisely aligned.

[0035] like Figure 5As shown, the centering clamping mechanism 500 includes a C-shaped fixing clamp 510, a limiting rod 530, and two upright plates 520. The two upright plates 520 are arranged side by side on the lower end face of the fixture mounting plate 400. The C-shaped fixing clamp 510 is located between the two upright plates 520. The C-shaped fixing clamp 510 is hinged to the two upright plates 520 by a rotating rod. The limiting rod 530 is arranged on the two upright plates 520 and is used to limit the C-shaped fixing clamp 510. The conical base 320 has an axially extending annular groove array on its conical surface. The end of the C-shaped fixing clamp 510 has a wedge-shaped protrusion that engages with the annular groove. The circumferentially distributed centering clamping mechanism 500 generates a uniformly distributed radial clamping force under the cooperation of the conical surface, which effectively counteracts the lateral impact caused by material deformation during the punching process; enabling the punch to maintain positioning accuracy and have structural reliability to resist complex alternating stress during high-speed continuous punching, fundamentally solving the problem of dimensional drift caused by fixing failure of traditional punches.

[0036] The fixing part includes a threaded rod 300 and multiple spring positioning pins 310. The bottom of the threaded rod 300 is integrally connected to the top of the conical base 320. Multiple spring positioning pins 310 are evenly distributed on the top of the threaded rod 300. The spring positioning pins 310 are detachably connected to the threaded rod 300.

[0037] The cutting edge structure 200 includes a connecting rod 210 and a cutting edge sleeve. The top of the connecting rod 210 is connected to the bottom of the conical base 320. The cutting edge sleeve is located at the bottom of the connecting rod 210, and the core positioning mechanism 600 is located inside the cutting edge sleeve. The core positioning mechanism 600 includes a positioning plate, a sliding rod, a core pressure plate, a spring, and two nuts. The connecting rod 210 has a hollow internal structure. The positioning plate is located inside the connecting rod 210 and has a linear bearing. The sliding rod passes through the linear bearing and slides with it. Two nuts are located at the top of the sliding rod, and the bottom of the sliding rod is integrally connected to the core pressure plate. The spring is sleeved on the sliding rod and is located between the positioning plate and the core pressure plate.

[0038] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A punch structure for a gasket stamping device, characterized in that: Includes a stamped mounting plate (100) and multiple punch mechanisms; A fixing plate (110) is provided at each of the left and right ends of the stamping mounting plate (100). The fixing plate (110) is integrally connected to the stamping mounting plate (100). The fixing plate (110) is used to connect to the upper die base of the stamping equipment. Multiple punch mechanisms are arranged on the stamping mounting plate (100); The punch mechanism includes a fixing part, a conical base (320), a conical self-locking mounting mechanism, a pad positioning mechanism (600), and a cutting edge structure (200). One end of the fixing part is connected to the upper die seat of the stamping equipment, and the other end of the fixing part is fixedly connected to the conical base (320). The conical self-locking mounting mechanism is set on the lower end face of the stamping mounting plate (100). The conical base (320) is connected to the conical self-locking mounting mechanism through conical surface fit. During the stamping process, the axial pressure is converted into radial constraint force to realize automatic centering and dynamic locking of the punch axis. The bottom of the conical base (320) is connected to the cutting edge structure (200), and the pad core positioning mechanism (600) is disposed inside the cutting edge structure (200).

2. The punch structure of a gasket punching apparatus according to claim 1, characterized by: The conical self-locking mounting mechanism includes a clamp mounting plate (400), a positioning sleeve (410), and multiple centering clamping mechanisms (500). The clamp mounting plate (400) is a circular plate, and the positioning sleeve (410) is set at the center of the clamp mounting plate (400). The stamping mounting plate (100) has a pre-set positioning slot, which can cooperate with the positioning sleeve (410). The multiple centering clamping mechanisms (500) are evenly arranged circumferentially on the lower end face of the clamp mounting plate (400). The clamp mounting plate (400) and the stamping mounting plate (100) are connected by multiple bolts. The conical base (320) is connected to the centering clamping mechanism (500) through conical surface cooperation.

3. The punch structure of a gasket punching apparatus according to claim 2, characterized by: The centering clamping mechanism (500) includes a C-shaped fixing clamp (510), a limiting rod (530), and two upright plates (520). The two upright plates (520) are arranged side by side on the lower end face of the fixture mounting plate (400). The C-shaped fixing clamp (510) is located between the two upright plates (520). The C-shaped fixing clamp (510) and the two upright plates (520) are hinged by a rotating rod. The limiting rod (530) is arranged on the two upright plates (520) and is used to limit the C-shaped fixing clamp (510). The conical base (320) has an axially extending annular groove array on its conical surface. The end of the C-shaped fixing clamp (510) has a wedge-shaped protrusion that engages with the annular groove.

4. The punch structure of a gasket punching apparatus according to claim 2, wherein: The number of centering clamping mechanisms (500) is 3.

5. The punch structure of a gasket stamping device according to any one of claims 1-4, characterized in that: The fixing part includes a threaded rod (300) and a plurality of spring positioning pins (310). The bottom of the threaded rod (300) is integrally connected to the top of the conical base (320). The plurality of spring positioning pins (310) are evenly distributed on the top of the threaded rod (300). The spring positioning pins (310) are detachably connected to the threaded rod (300).

6. The punch structure of a gasket punching apparatus according to claim 5, wherein: The cutting edge structure (200) includes a connecting rod (210) and a cutting edge sleeve. The top of the connecting rod (210) is connected to the bottom of the conical base (320). The cutting edge sleeve is disposed at the bottom of the connecting rod (210). The pad core positioning mechanism (600) is disposed inside the cutting edge sleeve.

7. The punch structure of a gasket punching apparatus according to claim 6, wherein: The pad core positioning mechanism (600) includes a positioning plate, a slide rod, a pad core pressure plate, a spring, and two nuts. The connecting rod (210) has a hollow internal structure. The positioning plate is located inside the connecting rod (210). The positioning plate is equipped with a linear bearing. The slide rod passes through the linear bearing and slides with it. Two nuts are provided at the top of the slide rod. The bottom of the slide rod is integrally connected to the pad core pressure plate. The spring is sleeved on the slide rod and is located between the positioning plate and the pad core pressure plate.

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