Anti-cracking stamping die

Abstract

The utility model discloses an anti-fracture stamping die, and particularly relates to the technical field of dies, the anti-fracture stamping die comprises an upper die plate and a lower die plate, the four corners of the bottom of the lower die plate are connected with a bottom plate through first buffer assemblies, and second buffer assemblies are arranged between the four corners of the bottom of the upper die plate and the four corners of the top of the lower die plate respectively. And fixing assemblies are arranged on the two sides of the upper mold plate and the two sides of the lower mold plate correspondingly, each fixing assembly comprises a hollow fixing plate and a sliding plate arranged in the hollow fixing plate, the hollow fixing plates are slidably connected with the sliding plates, and the hollow fixing plates are connected with the inner walls of the sliding plates through third springs. According to the utility model, the pressure during mold closing is buffered, and the upper mold plate and the lower mold plate are clamped and fixed through the fixing assembly during mold closing of the upper mold and the lower mold, so that the stability during mold closing of the upper mold and the lower mold is improved, and product breakage caused by overlarge pressure or instability of the mold is avoided.

Description

Technical Field

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

[0002] In the automobile manufacturing process, it is necessary to manufacture metal stamping parts for multiple automobile parts. Stamping parts are widely used in various car body covers, interior support parts, structural reinforcements, and a large number of automobile parts such as engine exhaust and oil inlet elbows and mufflers, hollow camshafts, oil pans, engine brackets, vehicle frame structural parts, cross and longitudinal beams, etc. These metal stamping parts need to be manufactured using stamping dies. Stamping dies use the die to apply pressure to the material on the press at room temperature to cause it to separate or deform, thereby obtaining automobile parts with a certain shape, size and performance.

[0003] At present, in order to prevent the problem of surface cracking of products after stamping due to excessive stamping pressure during the stamping process, the prior art installs elastic buffer devices such as springs on the mold to buffer the pressure during mold closing, ensuring that the stamping pressure will not be too large to cause product cracking. For example, the prior art publication number CN203170826U is an anti-crack stamping mold, and the publication number CN109093741A is a mold with an elastic stamping plate. However, in actual use, due to the use of an elastic structure, the instability of the mold during mold closing will be increased, causing the mold to shake easily during mold closing, making it easier for the product to be subjected to uneven force, which will also make it easier for the product to break. Utility Model Content

[0004] The utility model aims to provide an anti-cracking stamping die, which improves the stability of the upper and lower dies when they are closed by buffering the pressure during mold closing and clamping and fixing the upper and lower dies by a fixing component when the upper and lower dies are closed, thereby avoiding product cracking due to excessive pressure or unstable mold.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-rupture stamping die, comprising an upper die and a lower die arranged at the bottom of the upper die, the upper die comprising an upper die plate and a die head fixedly arranged at the bottom of the upper die plate, the lower die comprising a lower die plate and a die base fixedly arranged at the top of the lower die plate, the four corners of the bottom of the lower die plate are connected to a base plate through a first buffer component, and the first buffer component buffers the pressure during mold closing to prevent product rupture caused by excessive pressure.

[0006] A second buffer assembly is provided between the four corners of the bottom of the upper mold and the four corners of the top of the lower mold to further buffer the pressure during mold closing, and fixing assemblies are provided on both sides of the upper mold and the lower mold to improve the stability of the upper mold and the lower mold when the mold is closed, and further prevent the product from breaking;

[0007] The four corners of the top of the lower template are each provided with a second groove, the second buffer assembly comprises a guide rod, the top of the guide rod is fixedly arranged at the bottom of the upper template, and the bottom of the guide rod extends into the second groove and is slidably connected to the second groove, and a piston is fixed at the outer end of the bottom of the guide rod;

[0008] The fixing assembly includes a hollow fixing plate and a sliding plate arranged inside the hollow fixing plate, and the hollow fixing plate is slidably connected to the sliding plate. The hollow fixing plate is connected to the inner wall of the sliding plate by a third spring. The hollow fixing plate and two second grooves on the same side of the hollow fixing plate are connected by an air hose. The downward movement of the piston can transport the air in the second groove to the hollow fixing plate through the air hose, and the upward movement of the piston can suck the air in the hollow fixing plate back into the second groove through the air hose.

[0009] Preferably, the first buffer assembly includes a fixed column, the four corners of the bottom of the upper template are each provided with a first groove, and the first groove is arranged outside the second groove, and a first spring is fixed between the top of the first groove and the top of the fixed column.

[0010] Preferably, a second spring is fixed between the bottom end of the guide rod and the bottom end of the second groove, and the second spring is arranged on the outside of the air hose to further buffer the pressure during mold closing to prevent product rupture due to excessive pressure.

[0011] Preferably, the rear sides of the two hollow fixing plates are fixed by a support rod, and the bottom end of the support rod is fixedly connected to the top of the rear side of the base plate through two support columns to support the two hollow fixing plates.

[0012] Preferably, a circle of rubber strip is fixed on the outer side of the sliding plate, and the rubber strip is in contact with the inner wall of the hollow fixing plate to prevent the air in the hollow fixing plate from escaping through the gap between the outer wall of the sliding plate and the inner wall of the hollow fixing plate.

[0013] Preferably, one end of the air hose close to the hollow fixing plate is fixed to the outside of the hollow fixing plate, and one end of the air hose away from the hollow fixing plate is fixed to the bottom of the lower template.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. When the upper and lower molds are closed, the guide rod moves downward to compress the second spring, and at the same time, the guide rod moves downward to press the lower mold plate downward, and the lower mold plate moves downward to compress the first spring, so that the pressure during the closing of the mold is buffered by the first spring and the second spring to prevent the product from being broken due to excessive pressure;

[0016] 2. When the upper and lower molds are closed, the guide rod moves downward to drive the piston to move downward, thereby pressing the air in the second groove into the hollow fixed plate through the air hose. The air pushes the sliding plate to move inward, so that when the upper and lower molds are closed, the upper mold plate and the lower mold plate are clamped and fixed by the sliding plate, thereby improving the stability of the upper and lower molds when closing the molds, avoiding the shaking of the mold when closing the molds and causing uneven force on the product, and further preventing the product from breaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural diagram of the utility model without the fixed components;

[0020] Figure 3 For the utility model Figure 2 Enlarged view of part A in the middle;

[0021] Figure 4 This is a structural diagram of the fixed component of the utility model;

[0022] Figure 5 It is a top cross-sectional view of the fixing assembly of the utility model;

[0023] Figure 6 It is a working schematic diagram of the fixing component of the utility model.

[0024] Description of reference numerals:

[0025] 1 upper template, 2 lower template;

[0026] 3 first buffer assembly, 31 fixed column, 32 first groove, 33 first spring;

[0027] 4 bottom plate;

[0028] 5 second buffer assembly, 51 guide rod, 52 second groove, 53 second spring, 54 piston, 55 air hose;

[0029] 6 fixing assembly, 61 hollow fixing plate, 62 sliding plate, 63 supporting rod, 64 supporting column, 65 rubber strip, 66 third spring. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0031] The utility model provides Figure 1 The anti-rupture stamping die shown in the figure includes an upper die and a lower die arranged at the bottom of the upper die, the upper die includes an upper die plate 1 and a die head fixedly arranged at the bottom of the upper die plate 1, the lower die includes a lower die plate 2 and a die base fixedly arranged at the top of the lower die plate 2, and a second buffer component 5 is provided between the four corners of the bottom of the upper die plate 1 and the four corners of the top of the lower die plate 2 respectively, and the four corners of the top of the lower die plate 2 are provided with second grooves 52, and the second buffer component 5 includes a guide rod 51, the top of the guide rod 51 is fixedly arranged at the bottom end of the upper die plate 1, and the bottom end of the guide rod 51 extends into the second groove 52 and is slidably connected to the second groove 52, so as to guide the movement of the upper die when the die is closed.

[0032] like Figure 1-3 As shown, a base plate 4 is connected to the four corners of the bottom of the lower mold 2 through the first buffer component 3. The first buffer component 3 buffers the pressure during mold closing to prevent product rupture caused by excessive pressure. Specifically, the first buffer component 3 includes a fixed column 31, and the four corners of the bottom of the upper mold 1 are provided with a first groove 32, and the first groove 32 is arranged on the outside of the second groove 52. A first spring 33 is fixed between the top of the first groove 32 and the top of the fixed column 31. At the same time, a second spring 53 is fixed between the bottom end of the guide rod 51 and the bottom end of the second groove 52, and the second spring 53 is arranged on the outside of the air hose 55. When the upper and lower molds are closed, the first spring 33 and the second spring 53 buffer the pressure during mold closing to prevent product rupture caused by excessive pressure.

[0033] Then, if Figure 1 , 4 As shown in Figure 5, a fixing assembly 6 is provided on both sides of the upper mold plate 1 and the lower mold plate 2 to improve the stability of the upper mold and the lower mold when the mold is closed. The fixing assembly 6 includes a hollow fixing plate 61 and a sliding plate 62 provided inside the hollow fixing plate 61, and the hollow fixing plate 61 is slidably connected to the sliding plate 62. The inner wall of the hollow fixing plate 61 and the sliding plate 62 are connected by a third spring 66. A circle of rubber strip 65 is fixed on the outer side of the sliding plate 62, and the rubber strip 65 is in contact with the inner wall of the hollow fixing plate 61. The rear sides of the two hollow fixing plates 61 are fixed by a support rod 63, and the bottom end of the support rod 63 is fixedly connected to the top of the rear side of the bottom plate 4 through two support columns 64. The hollow fixing plate 61 is connected to the two second grooves 52 on the same side thereof through an air hose 55. One end of the air hose 55 close to the hollow fixing plate 61 is fixed to the outside of the hollow fixing plate 61, and one end of the air hose 55 away from the hollow fixing plate 61 is fixed to the bottom of the lower template 2. A piston 54 is fixed to the outer end of the bottom of the guide rod 51.

[0034] When the upper and lower molds are closed, the guide rod 51 moves downward to drive the piston 54 to move downward, so that the air in the second groove 52 is pressed into the hollow fixed plate 61 through the air hose 55, and the air pushes the sliding plate 62 to move toward the upper and lower molds. At the same time, the sliding plate 62 stretches the third spring 66, so that the upper mold plate 1 and the lower mold plate 2 are clamped by the sliding plate 62 when the upper and lower molds are closed. Figure 6 As shown, the stability of the upper and lower molds when closing the molds is improved, the mold shaking during closing the molds is avoided, and uneven force on the product is caused, and product rupture is further prevented. After the stamping is completed, the upper mold moves up to drive the guide rod 51 and the piston 54 to move up, and the piston 54 draws the air in the hollow fixed plate 61 back into the second groove 52, and then the sliding plate 62 is reset under the elastic force of the third spring 66.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An anti-fracture stamping die, comprising an upper die and a lower die arranged at the bottom of the upper die, the upper die comprising an upper die plate (1) and a die head fixedly arranged at the bottom of the upper die plate (1), the lower die comprising a lower die plate (2) and a die base fixedly arranged at the top of the lower die plate (2), characterized in that: The four corners of the bottom of the lower mold plate (2) are connected to a bottom plate (4) via a first buffer component (3), and the first buffer component (3) buffers the pressure during mold closing to prevent the product from breaking due to excessive pressure; A second buffer assembly (5) is provided between the four bottom corners of the upper mold plate (1) and the four top corners of the lower mold plate (2), and fixing assemblies (6) are provided on both sides of the upper mold plate (1) and the lower mold plate (2) to improve the stability when the upper mold and the lower mold are closed; The lower template (2) has four corners at the top thereof each having a second groove (52). The second buffer assembly (5) comprises a guide rod (51). The top of the guide rod (51) is fixedly arranged at the bottom of the upper template (1). The bottom of the guide rod (51) extends into the second groove (52) and is slidably connected to the second groove (52). A piston (54) is fixed at the outer end of the bottom of the guide rod (51). The fixing assembly (6) comprises a hollow fixing plate (61) and a sliding plate (62) arranged inside the hollow fixing plate (61), and the hollow fixing plate (61) is slidably connected to the sliding plate (62), the inner wall of the hollow fixing plate (61) and the sliding plate (62) are connected via a third spring (66), and the hollow fixing plate (61) and two second grooves (52) on the same side thereof are connected via an air hose (55).

2. The anti-fracture stamping die according to claim 1, characterized in that: The first buffer component (3) comprises a fixed column (31), the four corners of the bottom of the upper template (1) are each provided with a first groove (32), and the first groove (32) is arranged outside the second groove (52), and a first spring (33) is fixed between the top of the first groove (32) and the top of the fixed column (31).

3. The anti-fracture stamping die according to claim 1, characterized in that: A second spring (53) is fixed between the bottom end of the guide rod (51) and the bottom end of the second groove (52), and the second spring (53) is arranged outside the air hose (55) to further buffer the pressure during mold closing to prevent the product from breaking due to excessive pressure.

4. The anti-fracture stamping die according to claim 1, characterized in that: The rear sides of the two hollow fixing plates (61) are fixed via a support rod (63), and the bottom end of the support rod (63) is fixedly connected to the top of the rear side of the bottom plate (4) via two support columns (64).

5. The anti-fracture stamping die according to claim 1, characterized in that: A circle of rubber strip (65) is fixed on the outer side of the sliding plate (62), and the rubber strip (65) is in contact with the inner wall of the hollow fixed plate (61).

6. The anti-fracture stamping die according to claim 1, characterized in that: One end of the air hose (55) close to the hollow fixing plate (61) is fixed to the outside of the hollow fixing plate (61), and one end of the air hose (55) away from the hollow fixing plate (61) is fixed to the bottom of the lower template (2).

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