Novel metal can cover forming die

Abstract

The utility model provides a novel metal can cover forming die which solves the problem that a lower cutting die cannot bear large stamping force in the current stamping process. The material pressing ring is arranged at the bottom of the upper die plate, the material pressing ring is located on the outer side of the upper cutting die, the material pressing ring is matched with the top face of the lower cutting die, and the material pressing ring can float; the supporting ring is arranged on the inner side of the lower cutting die, the supporting ring can float, the top surface of the supporting ring is a plane, and the top surface of the supporting ring is matched with the bottom surface of the upper cutting die; the bottom face of the upper cutting die and the top face of the lower cutting die are both planes. After cutting is completed, the bottom face of the upper cutting die is matched with the supporting ring to press the periphery of the blank, and after the upper die core is matched with the lower die core, the periphery of the blank is separated from the upper cutting die and the supporting ring and moves along the outer wall of the upper die core and the inner wall of the supporting ring to be gradually formed; the matching surfaces of the upper cutting die and the supporting ring are planes, outward force cannot be generated in the stamping process, large stamping force can be borne, and the product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of punching equipment, in particular to a new type of metal can lid forming die. Background Art

[0002] The Chinese patent authorization announcement number CN216575099U discloses a metal can lid forming die. After the blank holder ring cooperates with the lower die ring, the inner wall of the convex part restricts the blank, making the bottom surface of the cut face inwards and the burrs located on the inner wall of the lid body, which can effectively prevent scratches between the lid bodies during transportation or handling. Due to the cooperation between the convex part and the inclined surface of the lower cutting die, the lower cutting die will be subjected to a downward force and an outward force. There is a situation where the lower cutting die cannot withstand a large punching force during the stamping process, otherwise the lower cutting die may be damaged, resulting in the forming of the can lid not meeting the expected effect. Summary of the Utility Model

[0003] To overcome the deficiencies of the background art, the utility model provides a new type of metal can lid forming die, which solves the problem that the lower cutting die cannot withstand a large punching force during the current stamping process.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A new type of metal can lid forming die includes an upper template and a lower template. The upper template is installed with an upper die holder and an upper cutting die. The lower template is installed with a lower die holder. The upper die holder is installed with an upper die core. The lower die holder is installed with a lower die core and a lower cutting die, and further includes:

[0006] A blank holder ring is arranged at the bottom of the upper template. The blank holder ring is located outside the upper cutting die. The blank holder ring cooperates with the top surface of the lower cutting die, and the blank holder ring is floating.

[0007] A support ring is arranged inside the lower cutting die. The support ring is floating. The top surface of the support ring is a plane. The top surface of the support ring cooperates with the bottom surface of the upper cutting die.

[0008] The bottom surface of the upper cutting die and the top surface of the lower cutting die are both planes.

[0009] The lower template is installed with a cylinder body. A piston is installed inside the cylinder body. A push rod is connected between the piston and the support ring.

[0010] The cross-section of the support ring is L-shaped.

[0011] An upper die ring is arranged between the upper die core and the upper cutting die. A lower die ring for cooperating with the upper die ring is arranged between the lower die core and the support ring. The lower die ring is floating.

[0012] The upper template is installed with a support plate for cooperating with the lower cutting die.

[0013] An adjusting washer is provided between the upper template and the upper cutting die.

[0014] The upper template is installed with a guide bushing, and the lower template is installed with a guide post for cooperating with the guide bushing.

[0015] The beneficial effects of the present utility model are as follows:

[0016] When stamping, the bottom surface of the blank holder cooperates with the top surface of the lower cutting die to press the metal sheet, and then the lower cutting die and the upper cutting die cooperate to cut the material. After the cutting is completed, the bottom surface of the upper cutting die cooperates with the support ring to press the periphery of the blank. After the upper die core and the lower die core cooperate, the periphery of the blank disengages from the upper cutting die and the support ring and moves along the outer wall of the upper die core and the inner wall of the support ring to be gradually formed; in this application, the mating surfaces of the upper cutting die and the support ring are both flat surfaces, and no outward force will be generated during the stamping process, so a larger punching force can be borne to ensure the quality of the product. Description of the Drawings

[0017] Figure 1 is a schematic diagram of the present utility model.

[0018] Figure 2 is the present utility model Figure 1 partial schematic diagram in.

[0019] Figure 3 is the present utility model Figure 2 magnified schematic diagram at A in.

[0020] Upper template 1, lower template 2, upper die holder 3, upper cutting die 4, lower die holder 5, lower cutting die 6, blank holder 7, support ring 8, cylinder block 9, piston 10, ejector rod 11, upper die ring 12, lower die ring 13, support plate 14, adjusting washer 15, guide bushing 16, guide post 17. Detailed Embodiment

[0021] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0022] In the embodiment, as Figure 1 , Figure 2 , Figure 3 shown, a new type of metal can lid forming die includes an upper template 1 and a lower template 2. The upper template 1 is installed with an upper die holder 3 and an upper cutting die 4. The lower template 2 is installed with a lower die holder 5. The upper die holder 3 is installed with an upper die core, and the lower die holder 5 is installed with a lower die core and a lower cutting die 6. It further includes:

[0023] A blank holder 7 is arranged at the bottom of the upper template 1. The blank holder 7 is located outside the upper cutting die 4. The blank holder 7 cooperates with the top surface of the lower cutting die 6, and the blank holder 7 can float;

[0024] The support ring 8 is arranged inside the lower die 6. The support ring 8 is floating. The top surface of the support ring 8 is a plane, and the top surface of the support ring 8 cooperates with the bottom surface of the upper die 4.

[0025] The bottom surface of the upper die 4 and the top surface of the lower die 6 are both planes.

[0026] When stamping, the bottom surface of the blank holder 7 cooperates with the top surface of the lower die 6 to press the metal sheet. Then, the lower die 6 and the upper die 4 cooperate to cut the material. After the cutting is completed, the bottom surface of the upper die 4 cooperates with the support ring 8 to press the periphery of the blank. After the upper die core and the lower die core cooperate, the periphery of the blank disengages from the upper die 4 and the support ring 8 and moves along the outer wall of the upper die core and the inner wall of the support ring 8 to be gradually formed. In this application, the mating surfaces of the upper die 4 and the support ring 8 are both planes, and no outward force will be generated during the stamping process, so a larger stamping force can be borne, ensuring the quality of the product.

[0027] In the embodiment, as Figure 1 、 Figure 2 shown, a cylinder block 9 is installed on the lower template 2, a piston 10 is installed in the cylinder block 9, and a push rod 11 is connected between the piston 10 and the support ring 8. Air pressure is introduced into the cylinder block 9, and the support ring 8 is driven to float by the movement of the piston 10. The structure is simple and the movement is stable.

[0028] In the embodiment, as Figure 2 、 Figure 3 shown, the cross section of the support ring 8 is L-shaped. After the can lid is formed, the periphery of the can lid fits against the L surface of the support ring. When the support ring 8 returns to its original position, the can lid can be pushed out from the lower die core.

[0029] In the embodiment, as Figure 2 、 Figure 3 shown, an upper die ring 12 is provided between the upper die core and the upper die 4, and a lower die ring 13 for cooperating with the upper die ring 12 is provided between the lower die core and the support ring 8. The lower die ring 13 is floating. The upper die ring 12 and the lower die ring 13 play a role in limiting the periphery of the can lid. At the same time, the lower die ring 13 is floating and can play a role in pushing the material, and can better push the formed can lid out of the lower die core. The lower die ring 13 is connected to the piston in the cylinder block.

[0030] In the embodiment, as Figure 1 、 Figure 2 shown, a support plate 14 for cooperating with the lower die 6 is installed on the upper template 1. It can be used to support the metal sheet to ensure that the metal sheet remains stable during stamping.

[0031] In the embodiment, as Figure 1 、 Figure 2As shown, an adjusting washer 15 is provided between the upper template 1 and the upper die 4. The pressure between the upper die 4 and the support ring 8 can be adjusted according to the thickness of the adjusting washer 15 to ensure that the stamping sheet is pressed tightly while preventing damage to the coating of the sheet.

[0032] In the embodiment, as Figure 1 shown, the upper template 1 is installed with a guide bushing 16, and the lower template 2 is installed with a guide post 17 for cooperating with the guide bushing 16. The linearity of the movement of the lower template 1 is ensured, the matching precision between the upper die core and the lower die core is ensured, and thus the quality of the can lid forming is ensured.

[0033] Obviously, the above embodiments of the present invention are merely examples for explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or variations can be made on the basis of the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or variations derived from the essential spirit of the present invention still fall within the protection scope of the present invention.

Claims

1. A new type of metal can lid forming die, comprising an upper template (1) and a lower template (2). The upper template (1) is installed with an upper die holder (3) and an upper cutting die (4). The lower template (2) is installed with a lower die holder (5). The upper die holder (3) is installed with an upper die core. The lower die holder (5) is installed with a lower die core and a lower cutting die (6), characterized in that, Further included are: A blank holder (7), which is arranged at the bottom of the upper template (1). The blank holder (7) is located outside the upper die cutter (4). The blank holder (7) cooperates with the top surface of the lower die cutter (6), and the blank holder (7) is floating. A support ring (8), which is arranged inside the lower die cutter (6). The support ring (8) is floating. The top surface of the support ring (8) is a flat surface, and the top surface of the support ring (8) cooperates with the bottom surface of the upper die cutter (4). The bottom surface of the upper die cutter (4) and the top surface of the lower die cutter (6) are both flat surfaces.

2. The novel metal can lid forming die according to claim 1, characterized in that: A cylinder block (9) is installed on the lower template (2). A piston (10) is installed inside the cylinder block (9). A ejector rod (11) is connected between the piston (10) and the support ring (8).

3. The novel metal can lid forming die according to claim 1, characterized in that: The cross section of the support ring (8) is L-shaped.

4. The novel metal can lid forming die according to claim 1, wherein: An upper die ring (12) is arranged between the upper die core and the upper die cutter (4). A lower die ring (13) for cooperating with the upper die ring (12) is arranged between the lower die core and the support ring (8). The lower die ring (13) is floating.

5. The novel metal can lid forming die according to claim 1, characterized in that: A support plate (14) for cooperating with the lower die cutter (6) is installed on the upper template (1).

6. The novel metal can lid forming die according to claim 1, characterized in that: An adjusting washer (15) is arranged between the upper template (1) and the upper die cutter (4).

7. The novel metal can lid forming die according to claim 1, characterized in that: A guide bushing (16) is installed on the upper template (1). A guide post (17) for cooperating with the guide bushing (16) is installed on the lower template (2).

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