Anti-jumping aluminum powder stamping structure and stamping die

Abstract

The utility model relates to the technical field of dies, and discloses an anti-jumping aluminum powder stamping structure and a stamping die, the stamping structure comprises a trimming punch, a stripper plate and a stripper insert core, and the trimming punch is used for being connected to an upper die and reciprocates along with the upper die in a first direction; the stripper plate is arranged below the trimming punch in the first direction, a via hole is formed in the stripper plate in a penetrating mode in the first direction, and the trimming punch can penetrate through the via hole in the first direction; the stripping insert core is arranged below the stripping plate in the first direction, a through hole is formed in the stripping insert core in a penetrating mode in the first direction, the trimming punch can penetrate through the through hole in the first direction, the through hole is in clearance fit with the trimming punch, and the clearance amount is set to range from 0.01 mm to 0.03 mm. When the head of the trimming punch passes through the via hole of the stripper plate, friction heating between aluminum powder is effectively avoided, so that the risk of breaking the trimming punch is reduced, and the service life of the trimming punch is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to an anti-jump aluminum powder stamping structure and a stamping mold. Background Art

[0002] Stamping dies are specialized equipment used in cold stamping to process materials (metal or non-metal) into parts (or semi-finished products). Stamping is a pressure processing method that uses a die mounted on a press at room temperature to apply pressure to the material, causing it to separate or plastically deform, thereby producing the desired part. Stamping assemblies are widely used in stamping dies. In the process of stamping aluminum products, the trimming punch of the stamping assembly moves downward together with the upper die and close to the lower die. The trimming punch first passes through the through hole of the stripper plate, then passes through the through hole of the stripper insert and presses on the aluminum material and then presses down, cooperating with the lower die blade located on the lower die to punch out preset holes in the aluminum material; when punching out the holes, the aluminum material produces granular aluminum powder due to its own molecular atomic structure and is easy to adhere to the head of the trimming punch used for punching; and in the process of the trimming punch moving upward and resetting together with the upper die, the aluminum powder adhered to the trimming punch is easy to rub against the aluminum powder accumulated in the through hole of the stripper plate to generate heat, causing the aluminum powder to expand due to heat, reducing the gap between the inner wall of the through hole of the stripper plate and the outer wall of the trimming punch, thereby creating a risk of breaking the trimming punch. Utility Model Content

[0003] In view of this, the utility model provides an anti-jump aluminum powder stamping structure and a stamping die to solve the problem that the trimming punch of the stamping die is prone to bring up the aluminum powder produced by punching and rub against the aluminum powder in the through hole of the stripping plate to generate heat, which can easily lead to the breaking of the trimming punch.

[0004] In a first aspect, the utility model provides an anti-jump aluminum powder stamping structure, which is applied to a stamping die. The stamping structure includes:

[0005] a trimming punch, connected to the upper die and reciprocating along the first direction with the upper die;

[0006] a stripper plate, disposed below the trimming punch along the first direction, the stripper plate having a through hole formed therethrough along the first direction, the through hole being used for the trimming punch to pass through along the first direction;

[0007] The stripper is arranged below the stripper plate along the first direction. The stripper has a through hole formed along the first direction. The through hole is used for the trimming punch to pass through along the first direction. The through hole is matched with the trimming punch gap, and the gap amount is set to 0.01mm to 0.03mm.

[0008] The anti-jump aluminum powder stamping structure according to the utility model has at least the following beneficial effects:

[0009] By matching the head of the trimming punch with the gap of the through hole of the stripper, and setting the gap amount to 0.01mm to 0.03mm, the gap amount in this range is smaller than the size of the aluminum powder particles generated in most punching processes, so that when the trimming punch is raised along the first direction with the upper die, the aluminum powder adhering to the trimming punch will be scraped off by the stripper when the trimming punch passes through the through hole of the stripper, so that there is basically no aluminum powder adhering to the head of the trimming punch, and when the head of the trimming punch passes through the through hole of the stripper plate, friction and heat between the aluminum powder are effectively avoided, thereby reducing the risk of breaking the trimming punch, and improving the life of the trimming punch, thereby improving the service life and production efficiency of the stamping die equipped with this anti-jump aluminum powder stamping structure.

[0010] In an optional embodiment, the gap between the through hole and the trimming punch is set to 0.02 mm.

[0011] In an optional embodiment, the outer side wall of the trimming punch is provided with a coating.

[0012] In an optional embodiment, a polishing layer is provided between the coating and the outer side wall of the trimming punch.

[0013] In an optional embodiment, the coating is configured as a chromium aluminum nitrogen coating.

[0014] In an optional embodiment, the thickness of the coating is set to 0.002 mm to 0.005 mm.

[0015] In an optional embodiment, the thickness of the coating is set to 0.003 mm.

[0016] In an optional embodiment, the coating is provided at the lower end of the outer side wall of the trimming punch, and the dimension of the coating along the first direction is set to 30 mm.

[0017] In an optional embodiment, a cooling channel is formed through the trimming punch along the first direction.

[0018] In a second aspect, the present invention further provides a stamping die, comprising the anti-jump aluminum powder stamping structure provided in the first aspect.

[0019] Because the stamping die includes an anti-jump aluminum powder stamping structure, it has the same beneficial effects as the anti-jump aluminum powder stamping structure, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 This is a structural schematic diagram of an anti-jump aluminum powder stamping structure according to an embodiment of the utility model;

[0022] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0023] Figure 3 This is a schematic top view of the structure of a trimming punch and a stripping sub-assembly in an anti-jump aluminum powder stamping structure according to an embodiment of the present invention;

[0024] Figure 4 for Figure 3 Enlarged schematic diagram of point A in the middle.

[0025] Description of reference numerals:

[0026] 100- trimming punch, 110- cooling channel, 200- stripper plate, 210- through hole, 300- stripper insert, 310- through hole. DETAILED DESCRIPTION

[0027] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0028] In the description of this embodiment, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this embodiment and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this embodiment. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this embodiment, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on specific circumstances.

[0030] In the process of stamping aluminum products, the stamping die of the related technology moves downward together with the upper die and close to the lower die. The trimming punch first passes through the through hole of the stripper plate, then passes through the through hole of the stripper insert and presses against the aluminum material and then presses down, cooperating with the lower die blade located at the lower die to punch out a preset hole in the aluminum material. When punching out the hole, the aluminum material produces granular aluminum powder due to its own molecular atomic structure and easily adheres to the head of the trimming punch used for punching. In the process of the trimming punch moving upward and resetting together with the upper die, the aluminum powder adhered to the trimming punch easily rubs against the aluminum powder accumulated in the through hole of the stripper plate to generate heat, causing the aluminum powder to expand due to heat, reducing the gap between the inner wall of the through hole of the stripper plate and the outer wall of the trimming punch, thereby creating the risk of breaking the trimming punch. In order to solve the above technical defects, an anti-jump aluminum powder stamping structure and a stamping die of the embodiment of the utility model are provided.

[0031] The following combination Figures 1 to 4 , describing the embodiments of the present utility model.

[0032] According to the first aspect of the embodiment of the utility model, a stamping structure for preventing aluminum powder from jumping is provided, which is applied to a stamping die. The stamping structure includes a trimming punch 100, a stripping plate 200 and a stripping insert 300. The trimming punch 100 is used to be connected to the upper die and move back and forth with the upper die along the first direction; the stripping plate 200 is arranged below the trimming punch 100 along the first direction, and the stripping plate 200 is penetrated by a through hole 210 along the first direction, and the through hole 210 is used for allowing the trimming punch 100 to pass through along the first direction; the stripping insert 300 is arranged below the stripping plate 200 along the first direction, and the stripping insert 300 is penetrated by a through hole 310 along the first direction, and the through hole 310 is used for allowing the trimming punch 100 to pass through along the first direction, and the through hole 310 is clearance-matched with the trimming punch 100, and the clearance amount is set to 0.01mm to 0.03mm. It is understood that the first direction mentioned herein refers to Figure 1 and Figure 2 The first direction in .

[0033] The anti-jump aluminum powder stamping structure of this embodiment is achieved by matching the head of the trimming punch 100 with the through hole 310 of the stripper 300, and the gap amount is set to 0.01mm to 0.03mm. The gap amount in this range is smaller than the aluminum powder particle size generated in most punching processes, so that when the trimming punch 100 is raised along the first direction with the upper die, the aluminum powder adhered to the trimming punch 100 will be scraped off by the stripper 300 in the process of the trimming punch 100 passing through the through hole 310 of the stripper 300, so that there is basically no aluminum powder adhered to the head of the trimming punch 100, and when the head of the trimming punch 100 passes through the through hole 210 of the stripper plate 200, it effectively avoids friction and heat between aluminum powder and aluminum powder, thereby reducing the risk of breaking the trimming punch 100, and improving the service life of the trimming punch 100, thereby improving the service life and production efficiency of the stamping die equipped with the anti-jump aluminum powder stamping structure of this embodiment.

[0034] Specifically, the clearance between the through hole 310 and the trimming punch 100 is set to 0.02 mm. This clearance allows the trimming punch 100 to substantially remove all aluminum powder adhering to the trimming punch 100 without affecting the trimming punch 100's punching operation through the through hole 310 in the first direction, effectively reducing the risk of breaking the trimming punch 100 and increasing its service life.

[0035] In some embodiments, the outer wall of the trimming punch 100 is provided with a coating. The coating has a low friction coefficient, improves the smoothness of the outer wall of the trimming punch 100, and can reduce the amount of aluminum powder adhering to the trimming punch 100 during the trimming punch 100 punching operation on aluminum materials. In addition, the stripper can effectively scrape away the aluminum powder adhering to the trimming punch 100, effectively reducing the risk of breaking the trimming punch 100 and extending the life of the trimming punch 100.

[0036] Specifically, a polishing layer is provided between the coating and the outer wall of the trimming punch 100. Before spraying to form the coating, the outer wall of the trimming punch 100 is first polished so that the coating can be more firmly bonded to the outer wall of the trimming punch 100, further improving the effect of preventing the trimming punch 100 from sticking to aluminum powder.

[0037] Specifically, the coating is a chromium aluminum nitrogen coating. The chromium aluminum nitrogen coating has the characteristics of low friction coefficient and high hardness, which can not only improve the effect of preventing aluminum powder from sticking to the trimming punch 100, but also ensure that the outer wall of the trimming punch 100 is not easily damaged by surface point-shaped dents and pits, thereby ensuring the quality of punching.

[0038] Specifically, the coating has a thickness of 0.002 mm to 0.005 mm. This coating thickness range improves the ability of the trimming punch 100 to prevent aluminum powder from sticking to the aluminum material while not affecting the trimming punch 100's ability to punch holes in aluminum. More specifically, the coating thickness is preferably 0.003 mm.

[0039] Specifically, the coating is disposed on the lower end of the outer wall of the trimming punch 100, and the dimension of the coating along the first direction is set to 30 mm. Because the trimming punch 100 relies on its lower end along the first direction to pass through the through hole 310 of the stripper 300 and cooperate with the lower die blade to punch a preset hole in the aluminum material, that is, the aluminum powder generated during the punching operation basically only adheres to the lower end of the outer wall of the trimming punch 100; therefore, by disposing the coating on the lower end of the outer wall of the trimming punch 100, this embodiment can not only improve the effect of the trimming punch 100 in preventing aluminum powder from sticking, but also reduce the production cost of the trimming punch 100. At the same time, by setting the length of the coating to 30 mm, it can be ensured that after the trimming punch 100 is lowered on the aluminum material to complete the punching, at least part of the coating is still located in the through hole 310 of the stripper 300.

[0040] like Figure 2 and Figure 3 As shown, specifically, the trimming punch 100 is formed with a cooling channel 110 along a first direction. During the punching operation, the cooling liquid can be cooled through the cooling channel 110 to extend the service life of the trimming punch 100.

[0041] According to a second aspect of the embodiment of the present utility model, a stamping die is further provided, comprising the anti-jumping aluminum powder stamping structure provided by the first aspect of the embodiment of the present utility model. The stamping structure of the stamping die of this embodiment is achieved by matching the head of the trimming punch 100 with the through hole 310 of the stripper 300, and the gap amount is set to 0.01mm to 0.03mm. The gap amount in this range is smaller than the size of the aluminum powder particles generated in most punching processes, so that when the trimming punch 100 is raised along the first direction with the upper die, the aluminum powder adhered to the trimming punch 100 will be scraped off by the stripper 300 when the trimming punch 100 passes through the through hole 310 of the stripper 300, so that there is basically no aluminum powder adhered to the head of the trimming punch 100, and when the head of the trimming punch 100 passes through the through hole 210 of the stripper plate 200, friction and heat between the aluminum powder are effectively avoided, thereby reducing the risk of breaking the trimming punch 100, improving the life of the trimming punch 100, and thereby improving the service life and production efficiency of the stamping die equipped with this embodiment.

[0042] Although the embodiments of the present invention have been described with reference to the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall fall within the scope defined by the appended claims.

Claims

1. An anti-jump aluminum powder stamping structure, applied to a stamping die, characterized in that: The stamping structure comprises: A trimming punch (100) is connected to the upper die and moves back and forth along a first direction with the upper die; a stripper plate (200) disposed below the trimming punch (100) along a first direction, wherein the stripper plate (200) is provided with a through hole (210) formed therethrough along the first direction, and the through hole (210) is used for allowing the trimming punch (100) to pass through along the first direction; A stripping insert (300) is provided below the stripping plate (200) along the first direction. The stripping insert (300) is provided with a through hole (310) along the first direction. The through hole (310) is used for allowing the trimming punch (100) to pass through along the first direction. The through hole (310) is clearance-matched with the trimming punch (100), and the clearance is set to 0.01 mm to 0.03 mm.

2. The anti-jump aluminum powder stamping structure according to claim 1, characterized in that: The gap between the through hole (310) and the trimming punch (100) is set to 0.02 mm.

3. The anti-jump aluminum powder stamping structure according to claim 1 or 2, characterized in that: The outer side wall of the trimming punch (100) is provided with a coating.

4. The anti-jump aluminum powder stamping structure according to claim 3, characterized in that: A polishing layer is provided between the coating and the outer side wall of the trimming punch (100).

5. The anti-jump aluminum powder stamping structure according to claim 3, characterized in that: The coating is configured as a chromium aluminum nitrogen coating.

6. The anti-jump aluminum powder stamping structure according to claim 5, characterized in that: The thickness of the coating is set to 0.002 mm to 0.005 mm.

7. The anti-jump aluminum powder stamping structure according to claim 6, characterized in that: The thickness of the coating is set to 0.003 mm.

8. The anti-jump aluminum powder stamping structure according to claim 3, characterized in that: The coating is provided at the lower end of the outer side wall of the trimming punch (100), and the dimension of the coating along the first direction is set to 30 mm.

9. The anti-jump aluminum powder stamping structure according to claim 1, characterized in that: The trimming punch (100) is penetrated along a first direction to form a cooling channel (110).

10. A stamping die, characterized in that: The invention comprises the anti-jumping aluminum powder stamping structure according to any one of claims 1 to 9.

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