Gasket fine blanking die
By designing a gasket precision blanking die and utilizing the cooperation of outer and inner ring punching tools, the problem of bright bands and tear bands on the gasket punching surface was solved, achieving a fully bright band effect.
Patent Information
- Application Number
- CN202423276809.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-30
AI Technical Summary
The existing gasket manufacturing method results in bright bands and tear bands on the punched surface, which cannot meet the customer's requirement for a fully bright band.
Design a gasket fine blanking die. Through the cooperation of the outer ring punching cutter and the inner ring punching cutter, combined with the limiting convex ring and the ejection component, the gasket is finely blanked and cut, ensuring that the blanked surface is a bright band.
The gaskets were punched without cracks or tears, and all were bright, meeting customer requirements.
Smart Images
Figure CN223616566U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gasket manufacturing technology, and in particular to a gasket fine stamping die. Background Technology
[0002] The common method of gasket manufacturing is to punch the gasket out of the strip using the traditional stamping method. The side wall of the gasket produced by this method will have bright bands and tear bands, which cannot meet the customer's requirement for a fully bright band.
[0003] Therefore, it is necessary to improve the existing gasket fine stamping dies. Utility Model Content
[0004] The purpose of this utility model is to overcome the defects in the existing technology and provide a gasket fine stamping die, in which the stamping surface of the gasket has no cracks or tears throughout its entire thickness and is all bright band.
[0005] To achieve the above technical effects, the technical solution of this utility model is as follows: a gasket fine blanking die, including a fixedly arranged lower die base and a lifting upper die base. The lower die base is provided with a lifting support platform and a fixedly arranged outer ring punching cutter. The outer ring punching cutter passes through the support platform, which is used to support the material strip. The support platform has two working positions. In the first working position, the cutting edge of the outer ring punching cutter is located inside the support platform. In the second working position, the cutting edge of the outer ring punching cutter protrudes from the upper surface of the support platform. The upper die base is fixedly provided with a die cavity that cooperates with the outer ring punching cutter for punching. The upper die base is also provided with an inner ring punching cutter for punching the inner hole of the gasket, which is located inside the die cavity.
[0006] According to one embodiment of the present invention, the die is provided with a limiting ring protruding downward for securing the strip firmly.
[0007] According to one embodiment of the present invention, the cross-section of the limiting protrusion ring is arranged in an isosceles trapezoidal shape, with its short side located at the bottom.
[0008] According to one embodiment of the present invention, the short side of the isosceles trapezoid is 0.1 mm, the height of the isosceles trapezoid is 0.8 mm, and the included angle between the two legs of the isosceles trapezoid is 80°.
[0009] According to one embodiment of the present invention, the cavity mold is provided with an ejection assembly for ejecting the formed gasket.
[0010] According to one embodiment of the present invention, the ejection assembly includes a push ring, and the inner ring punching cutter is slidably disposed within the push ring.
[0011] According to one embodiment of the present invention, a baffle is fixedly provided above the upper mold base, and a push rod is fixedly provided on the push ring. The push rod passes through the upper mold base, and the push rod cooperates with the baffle to push the push ring down in the mold-open state.
[0012] According to one embodiment of the present invention, a limiting groove and a limiting protrusion are provided between the die and the push ring to prevent the push ring from separating from the die.
[0013] According to one embodiment of the present invention, the outer diameter of the outer ring punching tool is 31.69 mm, the inner diameter of the outer ring punching tool is 21.14 mm, the inner diameter of the die is 31.73 mm, the outer diameter of the contact surface of the die is 55 mm, the outer diameter of the push ring is 31.73 mm, the inner diameter of the push ring is 21.11 mm, and the diameter of the inner ring punching tool is 21.1 mm.
[0014] The advantages and beneficial effects of this utility model are as follows: The gasket fine blanking die of this utility model is reasonably designed. By setting the fine blanking die, the gasket is finely blanked from the lower die to the upper die. Through the cooperation of the outer ring punching tool, the concave die and the inner ring punching tool, the purpose of the gasket blanking surface being a bright band is achieved. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the gasket fine blanking die in the open state and the state waiting for fine blanking.
[0016] Figure 2 This is an enlarged schematic diagram of the precision blanking die for the gasket in the closed and precision blanking state.
[0017] Figure 3 This is a schematic diagram of the gasket fine blanking die in the open state and the fine blanking completed state.
[0018] Figure 4 This is a sectional view of the die cavity;
[0019] Figure 5 yes Figure 4 Enlarged view of point A in the middle;
[0020] In the diagram: 1. Lower die base; 2. Upper die base; 3. Support platform; 4. Outer ring punching tool; 5. Material strip; 51. Gasket; 6. Die; 61. Limiting protrusion; 62. Limiting groove; 7. Inner ring punching tool; 8. Push ring; 81. Ejector rod; 82. Limiting protrusion. Detailed Implementation
[0021] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.
[0022] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "horizontal," "vertical," "top," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example
[0023] like Figure 1-5 As shown, the gasket fine blanking die of the embodiment includes a fixedly disposed lower die base 1 and a liftingly disposed upper die base 2. The lower die base 1 is provided with a liftingly disposed support platform 3 and a fixedly disposed outer ring punching cutter 4. The outer ring punching cutter 4 passes through the support platform 3. The support platform 3 is used to support the material strip 5. The support platform 3 has two working positions. In the first working position, the cutting edge of the outer ring punching cutter 4 is disposed inside the support platform 3. In the second working position, the cutting edge of the outer ring punching cutter 4 protrudes from the upper surface of the support platform 3. The upper die base 2 is fixedly disposed with a die 6 that cooperates with the outer ring punching cutter 4 for punching. The upper die base 2 is also provided with an inner ring punching cutter 7 for punching the inner hole of the gasket 51. The inner ring punching cutter 7 is disposed inside the die 6.
[0024] According to one embodiment of the present invention, the die 6 is provided with a limiting ring 61 protruding downward for fixing the strip 5 securely.
[0025] According to one embodiment of the present invention, the cross-section of the limiting protrusion 61 is arranged in an isosceles trapezoidal shape, with its short side located at the bottom.
[0026] According to one embodiment of the present invention, the short side of the isosceles trapezoid is 0.1 mm, the height of the isosceles trapezoid is 0.8 mm, and the included angle between the two legs of the isosceles trapezoid is 80°.
[0027] According to one embodiment of the present invention, the cavity mold 6 is provided with an ejection assembly for ejecting the formed gasket 51.
[0028] According to one embodiment of the present invention, the ejection assembly includes a push ring 8, and the inner ring punching cutter 7 is slidably disposed within the push ring 8.
[0029] According to one embodiment of the present invention, a baffle is fixedly provided above the upper mold base 2, and a push rod 81 is fixedly provided on the push ring 8. The push rod 81 passes through the upper mold base 2, and the push rod 81 cooperates with the baffle to push the push ring 8 down in the mold opening state.
[0030] According to one embodiment of the present invention, a limiting groove 62 and a limiting protrusion 82 are provided between the die 6 and the push ring 8 to prevent the push ring 8 from separating from the die 6.
[0031] According to one embodiment of the present invention, the outer diameter of the outer ring punching tool 4 is 31.69 mm, the inner diameter of the outer ring punching tool 4 is 21.14 mm, the inner diameter of the die 6 is 31.73 mm, the outer diameter of the contact surface of the die 6 is 55 mm, the outer diameter of the push ring 8 is 31.73 mm, the inner diameter of the push ring 8 is 21.11 mm, and the diameter of the inner ring punching tool 7 is 21.1 mm.
[0032] In the mold-opening state, the material strip 5 feeds in stages, the mold closes, the upper mold base 2 presses down, the die 6 fixes the material strip 5 on the support platform 3, the support platform 3 descends, the outer ring punching tool 4 precisely punches the shim into the die 6, and the inner ring punching tool 7 precisely punches out the inner ring of the shim.
[0033] When the mold is opened, the upper mold base 2 rises, the ejector pin 81 abuts against the baffle, and the push ring 8 descends to push out the spacer that has been finely blanked.
[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A gasket precision stamping die, characterized in that, The assembly includes a fixed lower die base (1) and a lifting upper die base (2). The lower die base (1) is equipped with a lifting support platform (3) and a fixed outer ring punching cutter (4). The outer ring punching cutter (4) passes through the support platform (3). The support platform (3) is used to support the material strip (5). The support platform (3) has two working positions. In the first working position, the cutting edge of the outer ring punching cutter (4) is located inside the support platform (3). In the second working position, the cutting edge of the outer ring punching cutter (4) protrudes from the upper surface of the support platform (3). The upper die base (2) is fixedly equipped with a die (6) that cooperates with the outer ring punching cutter (4) for punching. The upper die base (2) is also equipped with an inner ring punching cutter (7) for punching the inner hole of the gasket (51). The inner ring punching cutter (7) is located inside the die (6).
2. The gasket fine stamping die according to claim 1, characterized in that, The die (6) is provided with a limiting ring (61) that protrudes downward to securely fix the strip (5).
3. The gasket fine stamping die according to claim 2, characterized in that, The limiting protrusion (61) has an isosceles trapezoidal cross section with its short side located at the bottom.
4. The gasket fine stamping die according to claim 3, characterized in that, The shorter side of the isosceles trapezoid is 0.1 mm, the height of the isosceles trapezoid is 0.8 mm, and the included angle between the two legs of the isosceles trapezoid is 80°.
5. The gasket fine stamping die according to claim 1, characterized in that, The die (6) is equipped with an ejection assembly for ejecting the formed gasket (51).
6. The gasket fine stamping die according to claim 5, characterized in that, The ejection assembly includes a push ring (8), and the inner ring punching cutter (7) is slidably disposed within the push ring (8).
7. The gasket fine stamping die according to claim 6, characterized in that, A baffle is fixedly installed above the upper mold base (2), and a push rod (81) is fixedly installed on the push ring (8). The push rod (81) passes through the upper mold base (2). The push rod (81) cooperates with the baffle to push the push ring (8) down in the mold opening state.
8. The gasket fine stamping die according to claim 7, characterized in that, A limiting groove (62) and a limiting protrusion (82) are provided between the die (6) and the push ring (8) to prevent the push ring (8) from separating from the die (6).
9. The gasket fine stamping die according to claim 6, characterized in that, The outer diameter of the outer ring punching cutter (4) is 31.69 mm, the inner diameter of the outer ring punching cutter (4) is 21.14 mm, the inner diameter of the die (6) is 31.73 mm, the outer diameter of the contact surface of the die (6) is 55 mm, the outer diameter of the push ring (8) is 31.73 mm, the inner diameter of the push ring (8) is 21.11 mm, and the diameter of the inner ring punching cutter (7) is 21.1 mm.