Gasket punching die

Abstract

The utility model relates to a gasket punching die which comprises a die body, one side of the die body is provided with a containing groove used for a gasket to be inserted in in the transverse direction, the portion, located on the upper portion of the containing groove, of the die body is provided with a guide hole, and the portion, located on the lower portion of the containing groove, of the die body is provided with a female die installation hole. The male die is arranged in the guide hole in a sliding fit mode, and the length of the male die is larger than the axial length of the guide hole. And the female die is arranged in the female die mounting hole, a stamping hole is formed in the female die in the axial direction, and the stamping hole and the guide hole are coaxially formed. The punching device is convenient to carry, simple in structure, easy to machine, low in manufacturing cost and high in hole forming quality.

Description

Technical Field

[0001] The utility model relates to the technical field of punching dies, in particular to a gasket punching die. Background Art

[0002] During the mold assembly and debugging process, it is often necessary to add gaskets to adjust the insert gap, and processing gasket holes has always been a cumbersome problem.

[0003] The existing gasket hole processing method has at least the following disadvantages:

[0004] One is to use laser cutting, but most medium and small mold factories do not have laser cutting equipment, which increases the equipment requirements for the mold factories. At the same time, laser cutting requires drawing drawings, which increases the production cycle.

[0005] The second method is to use a special punching die and complete the punching on a punch press. This method increases the die manufacturing cost, processing cost, and production cycle.

[0006] The third method is to use a fitter to cut with scissors. This method is only suitable for gaskets with a thickness of less than 0.5 mm. It has a narrow application range and a long production cycle. It is easy to cause personal injury during the cutting process. The edges of the cut gaskets are uneven and it is difficult to meet quality requirements.

[0007] The fourth is to directly open the die hole in the lower template (such as the tooling for punching holes on the inspection fixture gasket disclosed in patent document CN207806338U). When the lower template is severely worn, the entire lower template needs to be replaced, which has a problem of relatively high maintenance costs.

[0008] Therefore, it is necessary to develop a new gasket punching die. Summary of the invention

[0009] The utility model aims to provide a gasket punching die, which can reduce the die cost while meeting the quality requirements in advance.

[0010] In a first aspect, a gasket punching die according to the utility model comprises:

[0011] A mold body, wherein a placement groove for inserting a gasket is opened in a transverse direction on one side of the mold body, a guide hole is opened on the upper part of the mold body located in the placement groove, and a concave mold mounting hole is opened on the lower part of the mold body located in the placement groove;

[0012] A punch, the punch is slidably fitted in the guide hole, and the length of the punch is greater than the axial length of the guide hole;

[0013] The die is arranged in the die mounting hole, and a punching hole is provided on the die along the axial direction, and the punching hole is coaxially arranged with the guide hole.

[0014] Optionally, the placement groove is a U-shaped groove, and the groove bottom is arc-shaped; the arc-shaped transition can avoid stress concentration leading to cracking of the mold body.

[0015] Optionally, the mold body is provided with a plurality of guide holes of different sizes and a plurality of die mounting holes, and each guide hole corresponds to each die mounting hole one by one;

[0016] The numbers of the male die, the female die, the female die mounting holes and the guide holes are the same, and punching of gaskets of various specifications can be realized.

[0017] Optionally, it further comprises a die fixing block, wherein a waste discharge hole is axially opened on the die fixing block, and the waste discharge hole is coaxially arranged with the punching hole;

[0018] The upper section of the cavity mounting hole is adapted to the shape of the cavity;

[0019] The lower section of the die mounting hole is adapted to the shape of the die fixing block;

[0020] The die is fixed in the die mounting hole by screws through a die fixing block; during installation, the die is first placed in the die mounting hole, and then the die fixing block is placed in the die mounting hole and fixed by screws.

[0021] Optionally, the punch is cylindrical, and the upper end of the punch is provided with a first circumferential step whose diameter is larger than the inner diameter of the corresponding guide hole; the punch can be easily removed through the first circumferential step.

[0022] Optionally, the die is cylindrical with a punching hole, and a second circumferential step is provided at the lower end of the die;

[0023] The upper section of the cavity mounting hole is a stepped hole matched with the shape of the cavity; the mounting accuracy of the cavity is ensured by the step hole matching the second circumferential step.

[0024] Optionally, the inner diameter of the upper section of the punch hole matches the diameter of the lower end of the punch;

[0025] The inner diameter of the lower section of the punching hole is greater than the inner diameter of the upper section of the punching hole, so as to facilitate the discharge of waste generated by punching.

[0026] Optionally, the inner diameter of the waste discharge hole is greater than or equal to the inner diameter of the lower section of the punching hole, so as to facilitate the discharge of waste generated by punching.

[0027] Optionally, the gap between the upper side wall and the lower side wall is greater than or equal to 1.2 mm; it is suitable for inserting gaskets of 0.1 mm to 1.0 mm. At the same time, the gap prevents the gasket from deforming during the punching process and facilitates the ejection of the punch.

[0028] Optionally, there are five convex molds, and the diameters of the lower ends of the five convex molds are different, namely 10 mm, 12 mm, 14 mm, 16 mm, and 20 mm;

[0029] There are five concave dies in total, and the inner diameter of the upper section of the punching hole of the concave die is the same as the lower end diameter of the punch at the corresponding position. Holes with diameters of 10mm, 12mm, 14mm, 16mm, and 20mm can be punched.

[0030] In a second aspect, a car described in the utility model adopts the gasket punching die described in the utility model.

[0031] Beneficial effects of the utility model:

[0032] (1) The gasket punching die described in the utility model only includes a die body, a male die and a female die, and the female die is separated from the die body. When the female die is severely worn, only the female die needs to be replaced. Compared with the method of directly punching holes on the die body, the cost of the die can be reduced, and the replacement of the female die is also very convenient.

[0033] (2) In the gasket punching die described in the utility model, the bottom of the placement groove adopts an arc-shaped transition, which can avoid stress concentration and cracking of the die body.

[0034] (3) The gasket punching die of the utility model can complete the gasket punching without relying on a punching machine and laser cutting equipment, which saves manufacturing costs and improves the portability of the gasket punching. In addition, the gasket punching die is small in size and light in weight. The total mass of the gasket punching die and the hammer is 20 kg, which is easy to carry.

[0035] (4) The gasket punching die of the utility model has a simple structure, low manufacturing cost and short production cycle.

[0036] (5) The gasket punching die of the utility model is designed with concave dies and convex dies of various sizes (for example: φ10mm, φ12mm, φ14mm, φ16mm, φ20mm). A set of dies can process gaskets with various hole diameters, and the hole forming quality is high.

[0037] (6) With the gasket punching die of the utility model, waste material generated by punching is discharged from the bottom of the die, and there is no risk of personal injury during the punching process.

[0038] In summary, the gasket punching die described in the utility model is easy to carry, has a simple structure, is easy to process, has a low manufacturing cost, and has a high hole forming quality, thereby improving processing efficiency and saving processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1This is one of the structural schematic diagrams of the gasket punching die in the embodiment of the present application;

[0040] Figure 2 This is the second structural schematic diagram of the gasket punching die in the embodiment of the present application;

[0041] Figure 3 This is a cross-sectional view of the working section of the gasket punching die in the embodiment of the present application;

[0042] Figure 4 This is an enlarged schematic diagram of part A in the embodiment of the present application;

[0043] Figure 5 This is an enlarged schematic diagram of part B in the embodiment of the present application;

[0044] Explanation of the reference numerals: 1. mold body, 1a. placement groove, 1b. guide hole, 1c. die mounting hole, 2. punch, 2a. first circumferential step, 3. die, 3a. punching hole, 3b. second circumferential step, 4. die fixing block, 4a. waste discharge hole, 4b. mounting hole, 5. hammer, 6. gasket, 7. waste. DETAILED DESCRIPTION

[0045] The following will refer to the accompanying drawings and preferred embodiments to illustrate the implementation of the technical solution of the utility model. Those skilled in the art can easily understand other advantages and effects of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the utility model. It should be understood that the preferred embodiments are only for illustrating the utility model, not for limiting the scope of protection of the utility model.

[0046] like Figures 1 to 5 As shown, in an embodiment of the present application, a gasket punching die includes a die body 1, a punch 2 and a die 3. A placement groove 1a for inserting the gasket 6 is provided in the transverse direction on one side of the die body 1, a guide hole 1b is provided on the upper part of the die body 1 located at the placement groove 1a, and a die mounting hole 1c is provided on the lower part of the die body 1 located at the placement groove 1a. The punch 2 is slidably fitted in the guide hole 1b, and the length of the punch 2 is greater than the axial length of the guide hole 1b. The die 3 is arranged in the die mounting hole 1c, and a punching hole 3a is provided in the axial direction on the die 3, and the punching hole 3a is coaxially arranged with the guide hole 1b.

[0047] In the embodiment of the present application, the punch 2 and the mold body 1 are clearance-fitted, the mold body 1 has a guiding effect on the punch 2 , and the punch 2 can slide up and down in the guide hole 1 b of the mold body 1 .

[0048] In the embodiment of the present application, the die 3 is separated from the die body 1. When the die 3 is severely worn, only the die 3 needs to be replaced. Compared with the method of directly punching holes on the die body 1, the cost of the die can be reduced, and the replacement of the die 3 is very convenient.

[0049] like Figure 4 As shown, in a possible embodiment, the placement groove 1a is a U-shaped groove, and the groove bottom is an arc shape. The arc-shaped transition can avoid stress concentration leading to cracking of the mold body 1.

[0050] like Figure 1 and Figure 2 As shown, in a possible embodiment, a plurality of guide holes 1b of different sizes and a plurality of die mounting holes 1c are provided on the mold body 1, and each guide hole 1b corresponds to each die mounting hole 1c one by one; the number of the punch 2, the die 3, the die mounting holes 1c and the guide holes 1b are the same; so that a set of molds can punch holes for gaskets of various different specifications.

[0051] like Figure 2 , Figure 3 and Figure 5 As shown, in a possible embodiment, a gasket punching die further includes a die fixing block 4, on which a waste discharge hole 4a is axially provided, and the waste discharge hole 4a is coaxially arranged with the punching hole 3a. The upper section of the die mounting hole 1c is adapted to the shape of the die 3. The lower section of the die mounting hole 1c is adapted to the shape of the die fixing block 4. The die 3 is fixed in the die mounting hole 1c by screws through the die fixing block 4. During installation, the die 3 is first placed in the die mounting hole 1c, and then the die fixing block 4 is placed in the die mounting hole 1c. The die fixing block 4 is provided with a mounting hole 4b, and the mold body 1 is provided with a threaded hole (not shown) at a position corresponding to the mounting hole 4b on the die fixing block 4, and is locked and fixed by screws (not shown).

[0052] like Figure 1 and Figure 2 As shown, in a possible embodiment, the punch 2 is cylindrical, and the upper end of the punch 2 is provided with a first circumferential step 2a having a diameter larger than the inner diameter of the corresponding guide hole 1b. The first circumferential step 2a can facilitate the removal of the punch 2.

[0053] like Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, in a possible embodiment, the die 3 is cylindrical with a punching hole 3a, and the lower end of the die 3 is provided with a second circumferential step 3b. The upper section of the die mounting hole 1c is a step hole adapted to the shape of the die 3. The step hole is matched with the second circumferential step 3b to ensure the installation accuracy of the die 3. The die 3 and the mold body 1 are clearance matched, the step is limited, and finally the die 3 is fixed to the mold body 1 by screws through the die fixing block 4.

[0054] like Figure 5 As shown, in a possible embodiment, the inner diameter of the upper section of the punching hole 3a is matched with the diameter of the lower end of the punch 2; the inner diameter of the lower section of the punching hole 3a is larger than the inner diameter of the upper section of the punching hole 3a, which is convenient for discharging waste generated by punching.

[0055] like Figure 5 As shown, in a possible embodiment, the inner diameter of the waste discharge hole 4a is greater than or equal to the inner diameter of the lower section of the punching hole 3a, so as to facilitate the discharge of waste generated by punching.

[0056] In a possible embodiment, the gap between the upper side wall and the lower side wall is greater than or equal to 1.2 mm, preferably 1.2 mm, which is suitable for placing a gasket 6 with a thickness of 0.1 mm to 1.0 mm. At the same time, the gap prevents the gasket 6 from deforming during the punching process and facilitates the removal of the punch 2.

[0057] In a possible embodiment, there are five punches 2, and the lower end diameters of the five punches 2 are different, namely 10 mm, 12 mm, 14 mm, 16 mm, and 20 mm. There are five concave dies 3, and the upper inner diameter of the punching hole 3a of the concave die 3 is the same as the lower end diameter of the punch 2 at the corresponding position.

[0058] When in use, first mark the area of ​​the gasket 6 where punching is required, then insert the gasket 6 into the placement groove 1a of the mold body 1, visually check until the gasket 6 is placed in the correct position, then insert the punch 2 into the guide hole 1b of the mold body 1, and finally use a hammer 5 to knock the top surface of the punch 2, and complete the punching of the gasket 6 through the shearing action of the punch 2 and the die 3.

[0059] The gasket punching die can complete the punching of the gasket 6 without relying on a punching machine and a laser cutting device, thereby saving manufacturing costs and improving the portability of punching the gasket 6. In addition, the gasket punching die is small in size and light in weight, and the total mass of the gasket punching die and the nail hammer 5 is 20Kg, which is easy to carry.

[0060] In the embodiment of the present application, the mold body 1 is processed by an integral steel block, the main purpose of which is to ensure the strength of the mold body. The punch 2 has high strength and good wear resistance, and has a guiding function when it has a punching function, and is easy to replace later. The die 3 has high strength, good wear resistance, easy installation, and easy replacement later.

[0061] The above-mentioned embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations and simplifications made without departing from the spirit and principle of the present invention shall be equivalent replacement modes and shall be included in the protection scope of the present invention.

Claims

1. A gasket punching die, characterized in that: include: A mold body (1), a placement groove (1a) for inserting a gasket (6) is provided in a transverse direction on one side of the mold body (1), a guide hole (1b) is provided on the upper part of the mold body (1) located at the placement groove (1a), and a concave mold mounting hole (1c) is provided on the lower part of the mold body (1) located at the placement groove (1a); A punch (2), the punch (2) being slidably fitted in the guide hole (1b), and the length of the punch (2) being greater than the axial length of the guide hole (1b); A die (3), the die (3) being arranged in the die mounting hole (1c), and a punching hole (3a) being provided on the die (3) along the axial direction, and the punching hole (3a) and the guide hole (1b) being arranged coaxially.

2. The gasket punching die according to claim 1, characterized in that: The placement groove (1a) is a U-shaped groove, and the groove bottom is arc-shaped.

3. The gasket punching die according to claim 1, characterized in that: The mold body (1) is provided with a plurality of guide holes (1b) of different sizes and a plurality of die mounting holes (1c), and each guide hole (1b) corresponds to each die mounting hole (1c) one by one; The numbers of the male die (2), the female die (3), the female die mounting holes (1c) and the guide holes (1b) are the same.

4. The gasket punching die according to claim 1, characterized in that: It also comprises a die fixing block (4), wherein a waste discharge hole (4a) is provided in the axial direction on the die fixing block (4), and the waste discharge hole (4a) is coaxially arranged with the punching hole (3a); The upper section of the die mounting hole (1c) is adapted to the shape of the die (3); The lower section of the die mounting hole (1c) is adapted to the shape of the die fixing block (4); The die (3) is fixed in the die mounting hole (1c) by means of screws via a die fixing block (4).

5. The gasket punching die according to claim 1, characterized in that: The punch (2) is cylindrical, and the upper end of the punch (2) is provided with a first circumferential step (2a) whose diameter is greater than the inner diameter of the corresponding guide hole (1b).

6. The gasket punching die according to claim 1, characterized in that: The die (3) is cylindrical and has a punching hole (3a), and a second circumferential step (3b) is provided at the lower end of the die (3); The upper section of the die mounting hole (1c) is a stepped hole that matches the shape of the die (3).

7. The gasket punching die according to claim 1, characterized in that: The inner diameter of the upper section of the punching hole (3a) matches the diameter of the lower end of the punch (2); The inner diameter of the lower section of the punching hole (3a) is greater than the inner diameter of the upper section of the punching hole (3a).

8. The gasket punching die according to claim 4, characterized in that: The inner diameter of the waste discharge hole (4a) is greater than or equal to the inner diameter of the lower section of the punching hole (3a).

9. The gasket punching die according to claim 1, characterized in that: The gap between the upper side wall and the lower side wall of the placement groove (1a) is greater than or equal to 1.2 mm.

10. The gasket punching die according to claim 1, characterized in that: There are five convex molds (2) in total, and the diameters of the lower ends of the five convex molds (2) are different, namely 10 mm, 12 mm, 14 mm, 16 mm, and 20 mm; There are five concave dies (3) in total, and the inner diameter of the upper section of the punching hole (3a) of the concave die (3) is the same as the lower end diameter of the punch die (2) at the corresponding position.

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