Forging die

Abstract

The utility model discloses a forging die, and relates to the technical field of dies. A lower die cavity is formed in the lower die; the reserved material clamping groove is formed in the side face of the lower die cavity; the material retaining clamping groove is arranged in the die cavity of the lower die, so that friction force between a workpiece and the lower die is increased, the workpiece cannot be adhered to the upper die but is retained in the die cavity of the lower die during forging, subsequent product demolding is facilitated, and continuity of forging production is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a forging mold. Background Art

[0002] Currently, most forging dies only have a lower ejection mechanism. However, for workpieces with more complex upper die cavities, it is easy for the upper die to stick during the hot forging process, making it difficult to demould the workpiece and making continuous production difficult. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art and provide a forging die.

[0004] In order to solve the above technical problems, the technical solutions of the present invention are as follows:

[0005] A forging die, comprising:

[0006] upper mold;

[0007] a lower mold having a lower mold cavity disposed therein;

[0008] The material retaining groove is opened on the side of the lower mold cavity.

[0009] As a preferred solution of the forging die of the utility model, the material retaining groove extends along the circumference of the lower die cavity and forms a closed annular groove.

[0010] As a preferred solution of the forging die of the utility model, the cross section of the material retaining slot is an isosceles trapezoid, and the lower base of the isosceles trapezoid is the opening end of the material retaining slot.

[0011] As a preferred solution of the forging die of the utility model, the height of the isosceles trapezoid formed by the cross section of the material retaining groove is 0.3 mm.

[0012] As a preferred solution of the forging die of the utility model, the angle between the waist and the upper base of the isosceles trapezoid formed by the cross section of the material retaining groove is 170°.

[0013] The beneficial effects of the utility model are:

[0014] (1) The utility model provides a material retaining groove in the die cavity of the lower die to increase the friction between the workpiece and the lower die, so that the workpiece will not stick to the upper die during forging but will remain in the die cavity of the lower die, which is convenient for subsequent product demoulding and ensures the continuity of forging production.

[0015] (2) The height of the isosceles trapezoid formed by the cross section of the material retaining slot in the present invention is 0.3 mm, and the angle between the waist of the isosceles trapezoid formed by the cross section of the material retaining slot and the upper base is 170°, so that a shallow groove is formed on the side of the lower mold cavity, and the waist of the isosceles trapezoid formed by the material retaining slot is nearly parallel to the upper base, which facilitates the ejection mechanism to eject the workpiece from the lower mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 A schematic structural diagram of the forging die provided by the utility model;

[0018] Figure 2 for Figure 1 A magnified schematic diagram of point A in the middle;

[0019] Among them: 1. Upper die; 2. Lower die; 3. Material retention slot; 4. Workpiece. DETAILED DESCRIPTION

[0020] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific implementation methods and in conjunction with the accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the structure of a forging die provided in an embodiment of the present application. The device includes an upper die 1 and a lower die 2. A lower die 2 cavity is provided within the lower die 2, and the lower end face of the lower die 2 cavity is adapted to the shape of the lower end face of the workpiece 4. An upper die 1 cavity is provided at the lower end of the upper die 1, and the upper die 1 cavity is adapted to the shape of the upper end face of the workpiece 4. During casting, the lower end of the upper die 1 extends into the lower die 2 cavity to cast the workpiece 4.

[0022] A material retaining groove 3 is provided on the side of the lower die 2 cavity. The material retaining groove 3 extends along the circumferential direction of the lower die 2 cavity to form a closed annular groove.

[0023] See also Figure 2 The cross section of the material retaining slot 3 is an isosceles trapezoid, and the lower base of the isosceles trapezoid is the opening end of the material retaining slot 3, that is, the width of the opening of the material retaining slot 3 is equal to the length of the lower base of the isosceles trapezoid formed by the cross section of the material retaining slot 3.

[0024] It should be noted that the lower base of the isosceles trapezoid formed by the cross section of the retaining groove 3 is flush with the side surface of the lower cavity mold. Figure 1The lower base of the isosceles trapezoid formed by the cross section of the material retaining slot 3 is arranged in the vertical direction.

[0025] Through the above arrangement, a groove is formed on the side of the cavity of the lower die 2. In this way, when casting the workpiece 4, a clamping structure with a groove and a protrusion matching each other is formed between the workpiece 4 and the lower die 2, so that the workpiece 4 stays in the lower die 2, which is convenient for subsequent demoulding.

[0026] In this embodiment, the height of the isosceles trapezoid formed by the cross-section of the retaining groove 3 is 0.3 mm, meaning that the depth of the retaining groove 3 extending into the interior of the lower die 2 is 0.3 mm. The angle between the waist and the upper base of the isosceles trapezoid formed by the cross-section of the retaining groove 3 is 170°. This arrangement creates a shallow groove on the side of the cavity of the lower die 2, and the waist of the isosceles trapezoid formed by the retaining groove 3 is nearly parallel to the upper base, facilitating the ejection mechanism to eject the workpiece 4 from the lower die 2.

[0027] Therefore, the technical solution of the present application sets a material retention groove 3 in the mold cavity of the lower mold 2 to increase the friction between the workpiece 4 and the lower mold 2, so that the workpiece 4 will not stick to the upper mold 1 during forging but will remain in the mold cavity of the lower mold 2, which is convenient for subsequent product demolding and ensures the continuity of forging production.

[0028] In addition to the above embodiments, the present invention may also have other implementation methods; any technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope required by the present invention.

Claims

1. A forging die, characterized in that: include: Upper mold(1); A lower mold (2) is provided with a lower mold (2) cavity; A material retaining slot (3) is provided on the side of the lower die (2) cavity; the material retaining slot (3) extends along the circumference of the lower die (2) cavity and forms a closed annular slot; the cross section of the material retaining slot (3) is an isosceles trapezoid, and the lower base of the isosceles trapezoid is the open end of the material retaining slot (3).

2. The forging die according to claim 1, wherein: The height of the isosceles trapezoid formed by the cross section of the material retaining slot (3) is 0.3 mm.

3. The forging die according to claim 1, wherein: The angle between the waist and the upper base of the isosceles trapezoid formed by the cross section of the material retaining slot (3) is 170°.

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