Anti-wrinkling drawing die

Abstract

The utility model discloses an anti-wrinkling drawing die which comprises a lower die plate, an upper die plate, a male die and a female die, the male die is installed in the middle of the upper portion of the lower die plate, a step-shaped groove is formed in the periphery of the upper portion of the male die, and the female die is arranged in the middle of the bottom of the upper die plate. A step-shaped convex part is arranged at the position, corresponding to the step-shaped groove of the convex die, of the concave die, and an anti-wrinkling block is arranged at the position, located on the periphery of the step-shaped convex part, of the bottom of the concave die; the anti-wrinkling stretching die can effectively prevent a product from wrinkling after stretching, the product quality is improved, and the product yield is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of stretching dies, in particular to an anti-wrinkling stretching die. Background Art

[0002] Metal deep drawing is to use stamping, ring drawing or metal die technology to deform the sheet metal material into a cylindrical or box-shaped part. The traditional drawing process is not suitable for making sheet metal parts with stepped concave (such as Figure 1 As shown in the figure, the side wall of the sheet metal is prone to wrinkling, which can easily affect the quality and yield of the product and cause certain defects. Utility Model Content

[0003] The utility model aims to provide an anti-wrinkling stretching die, which can effectively prevent the product from wrinkling after stretching, improve product quality and ensure product yield.

[0004] To achieve this purpose, the utility model adopts the following technical solutions:

[0005] Provided is an anti-wrinkle stretching die, comprising: a lower die plate, an upper die plate, a male die and a female die, wherein the male die is installed in the middle of the upper part of the lower die plate, a stepped groove is arranged on the upper periphery of the male die, the female die is arranged in the middle of the bottom of the upper die plate, a stepped convex portion is arranged at a position of the female die corresponding to the stepped groove of the male die, and an anti-wrinkle block is arranged at the bottom of the female die at the periphery of the stepped convex portion.

[0006] As a preferred solution of the anti-wrinkle stretching die, the inner side surface of the anti-wrinkle block matches the lower outer side surface of the punch.

[0007] As a preferred solution of the anti-wrinkling stretching die, the step-shaped protrusion is detachably connected to the concave die.

[0008] As a preferred solution of the anti-wrinkle stretching die, the punch includes a punch base and a punch portion, the punch base is installed in the middle of the upper part of the lower die plate, and the punch portion is detachably connected to the upper part of the punch base.

[0009] As a preferred solution of the anti-wrinkling stretching die, the edge of the step-shaped groove and the edge of the step-shaped protrusion are both arc structures.

[0010] As a preferred solution of the anti-wrinkling stretching die, the upper end edge of the male die and the lower end edge of the female die are both arc structures.

[0011] The beneficial effects of the utility model are as follows: the anti-wrinkling stretching die proposed by the utility model is provided with an anti-wrinkling block at the bottom of the die and at the periphery of the step-shaped convex part; it can effectively prevent the product from wrinkling after stretching, improve product quality, and ensure product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for use in the embodiments of the present utility model. Obviously, the drawings described below are only some embodiments of the present utility model, and for ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work.

[0013] Figure 1 This is a schematic diagram of the product structure prepared by the anti-wrinkling stretching die according to an embodiment of the utility model;

[0014] Figure 2 It is a structural schematic diagram of an anti-wrinkling stretching die according to an embodiment of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the lower template described in one embodiment of the utility model;

[0016] Figure 4 It is a structural schematic diagram of an upper template described in an embodiment of the utility model.

[0017] In the figure:

[0018] 1. Lower template; 2. Upper template; 3. Punch; 301. Punch base; 302. Punch part; 4. Concave mold; 5. Step-shaped groove; 6. Step-shaped convex part; 7. Anti-wrinkle block. DETAILED DESCRIPTION

[0019] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0020] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, 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 present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0021] Reference Figure 2-4 An embodiment of the utility model provides an anti-wrinkling stretching die, comprising: a lower die plate 1, an upper die plate 2, a punch 3 and a die 4, the punch 3 is installed in the middle of the upper part of the lower die plate 1, a stepped groove 5 is arranged on the upper periphery of the punch 3, the die 4 is arranged in the middle of the bottom of the upper die plate 2, a stepped convex portion 6 is arranged at a position of the die 4 corresponding to the stepped groove 5 of the punch 3, and an anti-wrinkling block 7 is arranged at the bottom of the die 4 at the periphery of the stepped convex portion 6.

[0022] In the above technical scheme, when working, a box-shaped sheet metal part whose inner contour matches the outer contour of the punch 3 is put on the top of the punch 3, and the lower template 1 drives the die 4 to move downward, and is stretched under the interaction of the stepped groove 5 of the punch 3 and the stepped convex part 6 of the die 4. Since an anti-wrinkle block 7 is provided at the bottom of the die 4 at the periphery of the stepped convex part 6, it can effectively prevent the product from wrinkling after stretching, improve product quality, and ensure product yield.

[0023] In some embodiments, the inner side of the anti-wrinkle block 7 matches the lower outer side of the punch 3. This structural design allows the side wall of the sheet metal to fit tightly between the inner side of the anti-wrinkle block 7 and the lower outer side of the punch 3 to prevent wrinkling.

[0024] In some embodiments, the step-shaped protrusion 6 is detachably connected to the die 4. Specifically, the step-shaped protrusion 6 can be detachably connected to the die 4 by screws or bolts. This structural design allows the step-shaped protrusion 6 in the die 4 to be replaced, such as replacing a new step-shaped protrusion 6 after damage, or replacing a step-shaped protrusion 6 of corresponding specifications according to the size or shape of the step-shaped concave of the product, thereby improving versatility.

[0025] In some embodiments, the punch 3 includes a punch base 301 and a punch part 302, wherein the punch base 301 is installed in the middle of the upper part of the lower mold plate 1, and the punch part 302 is detachably connected to the upper part of the punch base 301. Specifically, the punch part 302 can be detachably connected to the upper part of the punch base 301 by means of screws or bolts. This structural design allows the punch part 302 of the punch 3 to be replaced, such as replacing a new punch part 302 after damage, or replacing a punch part 302 of corresponding specifications according to the size or shape of the stepped concave of the product, thereby improving versatility.

[0026] In some embodiments, the side of the step-shaped groove 5 and the side of the step-shaped protrusion 6 are both arc structures. This structural design effectively improves the yield of the manufactured product.

[0027] In some embodiments, the upper edge of the male mold 3 and the lower edge of the female mold 4 are both arc structures. This structural design effectively improves the yield of the manufactured product.

[0028] In the description of the present invention, it should be understood that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The above is only for explaining the implementation mode of the utility model and is not used to limit the utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model without creative work should be included in the protection scope of the utility model.

Claims

1. An anti-wrinkle stretching die, characterized in that: include: A lower mold (1), an upper mold (2), a male mold (3) and a female mold (4), wherein the male mold (3) is installed in the middle of the upper part of the lower mold (1), a stepped groove (5) is arranged on the upper periphery of the male mold (3), the female mold (4) is arranged in the middle of the bottom of the upper mold (2), a stepped convex portion (6) is arranged on the female mold (4) at a position corresponding to the stepped groove (5) of the male mold (3), and an anti-wrinkling block (7) is arranged on the bottom of the female mold (4) at the periphery of the stepped convex portion (6).

2. The anti-wrinkle stretching die according to claim 1, characterized in that: The inner side surface of the anti-wrinkling block (7) matches the lower outer side surface of the punch (3).

3. The anti-wrinkle stretching die according to claim 1, characterized in that: The step-shaped protrusion (6) is detachably connected to the inside of the die (4).

4. The anti-wrinkle stretching die according to claim 1, characterized in that: The punch (3) comprises a punch base (301) and a punch portion (302); the punch base (301) is installed in the middle of the upper part of the lower mold plate (1); and the punch portion (302) is detachably connected to the upper part of the punch base (301).

5. The anti-wrinkle stretching die according to claim 1, characterized in that: The edge of the step-shaped groove (5) and the edge of the step-shaped protrusion (6) are both arc structures.

6. The anti-wrinkle stretching die according to claim 1, characterized in that: The upper edge of the male die (3) and the lower edge of the female die (4) are both arc structures.

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