A continuous cutting stretch punching die

Abstract

The utility model provides a continuous cutting stretch punching die, which includes an upper die seat and a lower die seat, a punching die core and a stretching die core are sequentially arranged on the lower die seat, a chip removal channel is arranged at the hole position corresponding to the punching die core of the lower die seat, a punching needle is arranged at the hole position corresponding to the punching die core of the upper die seat, the stretching die core includes an annular knife groove and a stretching cavity, the stretching cavity is located in the middle position of the annular knife groove, a cutting knife is arranged at the upper die seat corresponding to the annular knife groove, a stretching head is arranged at the upper die seat corresponding to the stretching cavity, an arc-shaped transition structure is arranged at the outer edge of the end of the stretching head, a material discharge channel is arranged at the lower die seat corresponding to the stretching cavity, and a demoulding mechanism is arranged in the stretching cavity. The die can perform continuous punching, cutting and stretching processes, so that one die equipment can process and shape the product, eliminating the process of material transfer, reducing manual intervention, and greatly improving production efficiency.

Description

Technical Field

[0001] The utility model relates to a continuous cutting stretch punching die. Background Art

[0002] When processing some metal or non-metal materials into parts, stamping dies are often used to perform process operations such as punching, cutting, and stretching on the materials. In order to be able to process and shape the materials, it is usually necessary to manually stretch, cut, and punch the materials separately. Each step is equipped with a stamping equipment, and it is necessary to manually put the materials completed in the previous process into the next process for operation. Overall, the production efficiency is relatively low, and dimensional deviations are prone to occur. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems. We provide a continuous cutting stretch punching die, which can realize punching, cutting and stretching in one, save labor and improve production efficiency.

[0004] To achieve the above-mentioned purpose, the utility model provides a continuous cutting stretching punching die, which includes an upper die base and a lower die base, a punching die core and a stretching die core are sequentially arranged on the lower die base, a chip removal channel is provided at the hole position of the punching die core corresponding to the lower die base, a punch needle is provided at the hole position of the punching die core corresponding to the upper die base, the stretching die core includes an annular knife groove and a stretching cavity, the stretching cavity is located in the middle position of the annular knife groove, a cutting knife is provided at the upper die base corresponding to the annular knife groove, a stretching head is provided at the upper die base corresponding to the stretching cavity, an arc-shaped transition structure is provided on the outer edge of the end of the stretching head, a material discharge channel is provided at the lower die base corresponding to the stretching cavity, and a demolding mechanism is provided in the stretching cavity.

[0005] In one or more embodiments, the demolding mechanism includes a movable pin and a spring. The stretch film core is provided with a mounting groove connected to the stretching cavity. The spring and the movable pin are arranged in the mounting groove. The front end of the movable pin protrudes from the stretching cavity. The front end of the movable pin is formed in an arc shape. The two ends of the spring respectively abut against the rear ends of the mounting groove and the movable pin.

[0006] In one or more embodiments, two demolding mechanisms are disposed in the stretching cavity, and the two demolding mechanisms are symmetrically disposed on the left and right.

[0007] In one or more embodiments, the movable pin shaft is provided with a limiting portion, the mounting groove is provided with a limiting groove cooperating with the limiting portion, and the limiting portion is used to fix the length of the front end of the interactive pin shaft protruding from the stretching cavity.

[0008] In one or more embodiments, the stretch film core includes a first seat body and a second seat body, the first seat body is fixed to the lower mold base by a first bolt, the first seat body is provided with a concave step connected to the second seat body, the mounting groove is opened on the upper end surface of the concave step, and the second seat body is connected and fixed to the first seat body by a first bolt.

[0009] In one or more embodiments, the perforated membrane core is fixed to the lower mold base by a second bolt.

[0010] Compared with the background technology, the utility model has the following effects: the mold can perform continuous punching, cutting and stretching processes, so that one mold device can process and shape the product, eliminating the process of material transfer, reducing manual intervention, and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the structure of the mold of the utility model embodiment;

[0012] Figure 2 It is a schematic structural diagram of the movable pin shaft of an embodiment of the utility model. DETAILED DESCRIPTION

[0013] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0014] See attached Figure 1-2 The present application provides a continuous cutting stretch punching die, which includes an upper die base 1 and a lower die base 2. A punching die core 3 and a stretching die core 4 are sequentially arranged on the lower die base. A chip removal channel 5 is arranged at the hole position of the punching die core 2 corresponding to the lower die base. A punch needle 6 is arranged at the hole position of the upper die base 1 corresponding to the hole position of the punching die core 2. When the punch needle is pressed down, a hole position can be punched on the material, and the waste on the material is discharged from the chip removal channel. The stretching die core includes an annular knife groove 7 and a stretching cavity 8. The stretching cavity is located in the middle of the annular knife groove. The upper die base 1 corresponds to the annular knife groove. The shaped knife groove is provided with a cutting knife 9, the upper die seat is provided with a stretching head 10 corresponding to the stretching cavity, the outer edge of the end of the stretching head 10 is provided with an arc-shaped transition structure 101, the lower die seat 2 is provided with a feeding channel 11 corresponding to the stretching cavity 8, and a demolding mechanism is provided in the stretching cavity. When the upper die seat is pressed down, the material is first cut off, and then the material is stretched into a shell shape by the stretching head, and the material is demolded by the demolding mechanism, and the demolded material is discharged from the feeding channel. The mold with the above structure can realize the processes of punching, cutting and stretching.

[0015] The demoulding mechanism includes a movable pin 12 and a spring 13. The stretching film core 4 is provided with a mounting groove connected to the stretching cavity. The spring 13 and the movable pin 12 are arranged in the mounting groove. The front end of the movable pin protrudes from the stretching cavity 8. The front end of the movable pin is formed in an arc shape. The two ends of the spring respectively abut against the mounting groove and the rear end of the movable pin. After the stretching head stretches the material, the stretching head moves downward to squeeze the movable pin so that the movable pin is locked inward. After the formed material completely passes through the movable pin, the movable pin protrudes outward again under the action of the spring. At this time, the material sleeved on the stretching head is blocked by the movable pin when the stretching head moves upward, thereby separating from the stretching head.

[0016] Two demoulding mechanisms are arranged in the stretching cavity 8, and the two demoulding mechanisms are arranged symmetrically on the left and right, so that the molding material on the stretching head can be easily removed.

[0017] The movable pin 12 is provided with a limiting portion 121, and the mounting groove has a limiting groove 14 which cooperates with the limiting portion. The limiting portion is used to fix the length of the front end of the interactive pin protruding from the stretching cavity to avoid the movable pin protruding too much, ensuring that the movable pin can be squeezed and retracted smoothly when the stretching head is pressed down.

[0018] The stretch film core 4 includes a first seat body 15 and a second seat body 16. The first seat body is fixed to the lower mold base 2 by a first bolt. The first seat body is provided with a concave step connected to the second seat body. The mounting groove is opened on the upper end surface of the concave step. The second seat body is connected and fixed to the first seat body by the first bolt. After disassembling the second seat body, the mounting groove is exposed, the spring is replaced, and lubricating oil is added to the mounting groove.

[0019] The perforated membrane core 3 is fixed to the lower die base 2 by a second bolt 17, so that the user can replace the perforated membrane core as needed.

[0020] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

Claims

1. A continuous cutting stretch punching die, characterized in that: The invention comprises an upper die base (1) and a lower die base (2), wherein a punching die core (3) and a stretching die core (4) are sequentially arranged on the lower die base, a chip removal channel (5) is arranged at a hole position of the lower die base corresponding to the punching die core (3), a punching needle (6) is arranged at a hole position of the upper die base (1) corresponding to the punching die core (3), the stretching die core comprises an annular knife groove (7) and a stretching cavity (8), the stretching cavity is located in the middle of the annular knife groove, a cutting knife (9) is arranged at the upper die base (1) corresponding to the annular knife groove, a stretching head (10) is arranged at the upper die base corresponding to the stretching cavity, an arc-shaped transition structure (101) is arranged at the outer edge of the end of the stretching head (10), a material discharge channel (11) is arranged at the lower die base (2) corresponding to the stretching cavity (8), and a demoulding mechanism is arranged in the stretching cavity.

2. A continuous cutting stretch punching die according to claim 1, characterized in that: The demoulding mechanism comprises a movable pin (12) and a spring (13); the stretching mold core (4) is provided with a mounting groove connected to the stretching cavity; the spring (13) and the movable pin (12) are arranged in the mounting groove; the front end of the movable pin protrudes from the stretching cavity (8); the front end of the movable pin is formed in an arc shape; and the two ends of the spring respectively abut against the rear ends of the mounting groove and the movable pin.

3. A continuous cutting stretch punching die according to claim 2, characterized in that: Two demoulding mechanisms are arranged in the stretching cavity (8), and the two demoulding mechanisms are arranged symmetrically on the left and right.

4. A continuous cutting stretch punching die according to claim 2, characterized in that: The movable pin shaft (12) is provided with a limiting portion (121), and the mounting groove is provided with a limiting groove (14) cooperating with the limiting portion, and the limiting portion is used to fix the length of the front end of the interactive pin shaft protruding from the stretching cavity.

5. A continuous cutting stretch punching die according to claim 2, characterized in that: The stretching die core (4) comprises a first seat body (15) and a second seat body (16), the first seat body being fixed to the lower die seat (2) by a first bolt, the first seat body being provided with a concave step connected to the second seat body, the mounting groove being provided on the upper end surface of the concave step, and the second seat body being connected and fixed to the first seat body by a first bolt.

6. A continuous cutting stretch punching die according to any one of claims 1 to 5, characterized in that: The punching die core (3) is fixed to the lower die base (2) via a second bolt (17).

Images