Scratch-free bending die and punching machine

Abstract

The utility model relates to the technical field of bending dies, in particular to a scratch-free bending die and a punching machine. The scratch-free bending die comprises an upper die and a lower die, the upper die comprises an upper die frame and an upper die core, and the upper die core is arranged on the upper die frame; the lower die comprises a lower die frame and a first side die core, and the first side die core is arranged on the lower die frame; the side pushing mechanism comprises a driving block, a mounting block, a resetting piece and a driving rod; a reset rod of the reset piece is connected with the first side mold core; a first groove with a first inclined wall is formed between the mounting block and the first side mold core; a driving block with a second inclined wall is inserted into the first groove; and the driving rod can extrude the driving block. During die assembly, the upper die core presses a product in the cavity, the driving rod presses the driving block in the first groove, the driving block pushes the first side die core to extrude the bent part of the product, and bending scratches are avoided. And after bending, the first side mold core loosens the product, the product cannot fall off, and the safety is good. The stroke of the first side mold core is small, waiting gaps are reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bending moulds, in particular to a non-scratch bending mould and a punching machine. Background Art

[0002] Bending dies are tools used to shape sheet materials. Different dies are composed of different parts. Bending dies mainly achieve the processing of the shape of objects by changing the physical state of the molding material. Some products in production have low hardness, so it is necessary to avoid scratches at the bending position when bending.

[0003] In order to avoid indentations at the bending position, there are some scratch-free molds on the market to avoid scratches. However, some bending molds are made by two hinged support plates. When the product is bent, the support plates are swung up synchronously to avoid scratches on the product.

[0004] For example, Chinese patent application number: 202023166398. discloses an automatic return and non-indentation bending mold. When the bending mold bends the product, the support plate will swing up as the product bends, and the scratch problem when the product is bent is solved by swinging the support plate. This design has the following problems: 1. After the bending is completed, the two support plates will become horizontal. The bent product is unstable and easily falls from the mold, which is unsafe. In addition, the support plate is reset by the action of the spring. If the support plate rebounds too quickly, it may injure the worker who is taking the part. 2. The travel of the support plate is large, and the workpiece can only be taken out after the support plate is reset, and the bending efficiency is low. Utility Model Content

[0005] In view of this, the utility model aims at the deficiencies of the prior art, and its main purpose is to provide a non-scratch bending mold, which is not only safe but also has higher bending efficiency, thereby overcoming the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The present application provides a scratch-free bending mold, comprising an upper mold and a lower mold, wherein the upper mold comprises an upper mold frame and an upper mold core, and the upper mold core is arranged on the upper mold frame;

[0008] The lower mold comprises a lower mold frame and a first side mold core, wherein the first side mold core is arranged on the lower mold frame; the area between the first side mold cores is a mold cavity;

[0009] The side push mechanism includes a driving block, a mounting block, a reset member, and a driving rod; the reset member is arranged on the mounting block, and the reset rod of the reset member is connected to the first side mold core; a first groove is formed between the mounting block and the first side mold core, and the first groove has a first inclined wall; the driving block is inserted into the first groove, and the driving block has a second inclined wall; the driving rod is arranged on the upper mold frame; the driving rod can squeeze the driving block, and the second inclined wall can squeeze the first inclined wall.

[0010] Preferably, the back of the driving block is provided with a limiting block, the first groove is connected to the limiting groove, and the limiting block can slide up and down in the limiting groove.

[0011] Preferably, the cross-sections of the limiting block and the limiting groove are T-shaped, dovetail-shaped, rectangular, or arc-shaped.

[0012] Preferably, a first spring is passed through the reset rod, and the reset rod pulls the first side mold core.

[0013] Preferably, each of the first side mold cores is provided with at least two reset rods.

[0014] Preferably, the upper mold frame is provided with a guide column and a second spring, the second spring is sleeved on the guide column, and the lower mold frame is provided with a guide column seat, and the guide column can be inserted into the guide column seat.

[0015] Preferably, an ejector pin is provided in the mold cavity, and the ejector pin can eject the product in the mold cavity.

[0016] Preferably, the first side mold core is provided with a sliding edge, and the second side mold core is provided with a sliding groove, and the sliding edge slides in the sliding groove.

[0017] Preferably, there are four driving rods, and the four driving rods are arranged in a rectangular shape.

[0018] The present application provides a punching machine, comprising the abrasion-free bending die, wherein the abrasion-free bending die is arranged on a machine platform, and a safety grating is arranged on the front of the machine platform.

[0019] Compared with the prior art, the utility model has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that when the upper mold and the lower mold are closed, the upper mold core moves toward the cavity, the driving rod presses down the driving block in the first groove, and then the second inclined wall of the driving block squeezes the first inclined wall of the first groove, and the driving block pushes the first side mold core to squeeze the bending part of the product, so as to avoid scratches when the product is bent. After the bending is completed, the upper mold core and the driving rod are reset, and the reset rod pulls the first side mold core, and the first side mold core releases the product. The product is still in the cavity and will not fall. At the same time, the stroke of the first side mold core is very small, and the reset is very fast, which is conducive to improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the mold closing state of an embodiment of the utility model.

[0021] Figure 2 It is a schematic diagram of the mold opening state of an embodiment of the utility model.

[0022] Figure 3 It is a perspective schematic diagram of an embodiment of the utility model

[0023] Figure 4 It is an embodiment of the utility model Figure 3 AA cross-sectional view

[0024] Figure 5 This is a schematic diagram of the first side mold core assembly of an embodiment of the utility model

[0025] Description of the accompanying drawings:

[0026] 10. Upper mold; 11. Upper mold frame; 12. Upper mold core; 13. Guide column; 14. Second spring; 20. Lower mold; 21. Lower mold frame; 22. First side mold core; 23. Slide edge; 24. Guide column seat; 25. Cavity 26. Ejector column; 27. Second side mold core; 28. Slide groove; 30. Side push mechanism; 31. Mounting block; 32. Reset rod; 33. Drive rod; 310. First groove; 311. First inclined wall; 312. Limit groove; 313. First spring; 320. Drive block; 321. Second inclined wall; 322. Limit block; 40. Product. DETAILED DESCRIPTION

[0027] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0028] Please refer to Figures 1 to 5 As shown, it shows the specific structure of the preferred embodiment of the utility model, which is a scratch-free bending mold.

[0029] When the upper mold 10 and the lower mold 20 are closed, the upper mold core 12 presses the product 40 in the mold cavity 25, and the driving rod 33 drives the driving block 320 to push the first side mold core 22, and the first side mold core 22 presses on the bending part of the product 40, so as to avoid scratches. After the bending is completed, the upper mold core 12 and the driving rod 33 are reset, and the reset rod 32 pulls the first side mold core 22, and the first side mold core 22 releases the product 40, and the product 40 is still in the mold cavity 25 and will not fall. At the same time, the stroke of the first side mold core 22 is very small, and the reset is very fast, which is conducive to improving the processing efficiency.

[0030] The present application provides a scratch-free bending mold, including an upper mold 10 and a lower mold 20, wherein the upper mold 10 includes an upper mold frame 11 and an upper mold core 12, wherein the upper mold core 12 is arranged on the upper mold frame 11; the lower mold 20 includes a lower mold frame 21 and a first side mold core 22, wherein the first side mold core 22 is arranged on the lower mold frame 21; the area between the first side mold cores 22 is a mold cavity 25; the side push mechanism 30 includes a driving block 320, a mounting block 31, a reset member, and a driving rod 33; the reset member is arranged on the mounting block 31, the reset rod 32 of the reset member is connected to the first side mold core 22; a first groove 310 is formed between the mounting block 31 and the first side mold core 22, and the first groove 310 has a first inclined wall 311; the driving block 320 is inserted in the first groove 310, and the driving block 320 has a second inclined wall 321; the driving rod 33 is arranged on the upper mold frame 11; the driving rod 33 can squeeze the driving block 320, and the second inclined wall 321 can squeeze the first inclined wall 311. The working steps of the non-scratch bending mold are as follows: 1. Manually or mechanically put the workpiece into the position of the cavity 25, and the left and right ends of the workpiece are supported by the support blocks to prevent deformation. 2. The upper mold 10 and the lower mold 20 are closed, and the upper mold core 12 presses the product 40 to move at the position of the cavity 25, and at the same time, the driving rod 33 presses down the driving block 320 in the first groove 310. Under the action of the driving rod 33, the driving block 320 moves downward in the first groove 310, and the second inclined wall 321 of the driving block 320 squeezes the first inclined wall 311 of the first groove 310, so that the driving block 320 pushes the first side mold core 22 to squeeze the side wall of the product 40 in the cavity 25, which helps to shape the product 40 and avoids scratches when the product 40 is bent. 3. After the bending is completed, the upper mold 10 and the lower mold 20 are separated, the upper mold core 12 and the driving rod 33 are reset, and the reset rod 32 pulls the first side mold core 22, and the first side mold core 22 releases the product 40 in the cavity 25, and the product 40 will not fall. At the same time, the stroke of the first side mold core 22 is very small, and the reset is very fast, which is conducive to improving processing efficiency.

[0031] Preferably, the back of the driving block 320 has a limit block 322, the first slot 310 is connected to the limit slot 312, and the limit block 322 can slide up and down in the limit slot 312. When the driving block 320 moves up and down in the first slot 310, the limit block 322 slides up and down in the limit slot 312, which helps to control the movement accuracy of the driving block 320 and prevent it from running off. In this embodiment, the driving and limit blocks 322 are integrally formed and have high strength.

[0032] Preferably, the cross-section of the limit block 322 and the limit groove 312 is one of T-shaped, dovetail-shaped, rectangular, and arc-shaped. In this embodiment, the cross-section of the limit block 322 and the limit groove 312 is dovetail-shaped, and the limit block 322 has high movement accuracy under the control of the limit groove 312.

[0033] Preferably, a first spring 313 is passed through the reset rod 32, and the reset rod 32 pulls the first side mold core 22. The reset rod 32 can be movably passed through the mounting block 31. One end of the reset rod 32 is fixed to the first side mold core 22, and the elastic force of the first spring 313 causes the first side mold core 22 to move closer to the mounting block 31. The first inclined wall 311 squeezes the second inclined wall 321 so that the limit block 322 can move upward in the first groove 310. On the contrary, the second inclined wall 321 squeezes the first inclined wall 311, and the first side mold core 22 moves toward the product 40 in the cavity 25. In this embodiment, the first inclined wall 311 is on the outside of the first side mold core 22, and the first side mold core 22 and the mounting block 31 are closed together to form a complete first groove 310, that is, the first groove 310 can be opened and closed.

[0034] Preferably, each of the first side mold cores 22 is provided with at least two reset rods 32. In this embodiment, each of the first side mold cores 22 is provided with two reset rods 32, which can ensure the stability of the movement of the first side mold core 22.

[0035] Preferably, the upper mold frame 11 is provided with a guide post 13 and a second spring 14, the second spring 14 is sleeved on the guide post 13, and the lower mold frame 21 is provided with a guide post seat 24, the guide post 13 can be inserted into the guide post seat 24. When the upper mold 10 and the lower mold 20 are closed, the guide post 13 can be inserted into the guide post seat 24 to ensure the mold clamping accuracy. The second spring 14 plays a buffering role.

[0036] Preferably, a push column 26 is provided in the mold cavity 25, and the push column 26 can push out the product 40 in the mold cavity 25. The push column 26 is provided on the lower mold frame 21, and the push column 26 is driven by the machine table, and the push column 26 rises to push out the product 40 in the mold cavity 25.

[0037] Preferably, the first side mold core 22 is provided with a sliding edge 23, and the second side mold core 27 is provided with a sliding groove 28, and the sliding edge 23 slides in the sliding groove 28. The second side mold core 27 is arranged on the lower mold frame 21. When the reset rod 32 pulls the first side mold core 22 to slide on the lower mold frame 21, the sliding edge 23 slides in the sliding groove 28, so that the movement trajectory of the first side mold core 22 can be controlled to prevent it from running off.

[0038] Preferably, there are four driving rods 33, and the four driving rods 33 are arranged in a rectangular shape. This design helps to ensure the stability of the upper mold 10 and the lower mold 20 when they are closed. At the same time, it also ensures that the force on the first side mold core 22 is balanced, and the movement is more stable.

[0039] In summary, the design focus of the utility model is that when the upper mold 10 and the lower mold 20 are closed, the upper mold core 12 presses down the product 40 in the cavity 25, and the driving block 320 drives the first side mold core 22 to squeeze the bending part of the product 40 to avoid scratches on the product 40. After the bending is completed, the product 40 is still in the cavity 25 and will not fall, which is safer. At the same time, the stroke of the first side mold core 22 is very small, and the reset is very fast, which reduces the gap and is conducive to improving the processing efficiency.

[0040] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A non-scratch bending die, comprising an upper die and a lower die, characterized in that: The upper mold comprises an upper mold frame and an upper mold core, and the upper mold core is arranged on the upper mold frame; The lower mold comprises a lower mold frame and a first side mold core, wherein the first side mold core is arranged on the lower mold frame; the area between the first side mold cores is a mold cavity; The side push mechanism includes a driving block, a mounting block, a reset member, and a driving rod; the reset member is arranged on the mounting block, and the reset rod of the reset member is connected to the first side mold core; a first groove is formed between the mounting block and the first side mold core, and the first groove has a first inclined wall; the driving block is inserted into the first groove, and the driving block has a second inclined wall; the driving rod is arranged on the upper mold frame; the driving rod can squeeze the driving block, and the second inclined wall can squeeze the first inclined wall.

2. The scratch-free bending die according to claim 1, characterized in that: The back of the driving block is provided with a limiting block, the first slot is connected to the limiting slot, and the limiting block can slide up and down in the limiting slot.

3. The scratch-free bending die according to claim 2, characterized in that: The cross-sections of the limiting block and the limiting groove are one of T-shaped, dovetail-shaped, rectangular and arc-shaped.

4. The scratch-free bending die according to claim 1, characterized in that: A first spring is passed through the reset rod, and the reset rod pulls the first side mold core.

5. The scratch-free bending die according to claim 4, characterized in that: Each of the first side mold cores is provided with at least two reset rods.

6. The scratch-free bending die according to claim 1, characterized in that: The upper mold frame is provided with a guide column and a second spring, the second spring is sleeved on the guide column, and the lower mold frame is provided with a guide column seat, and the guide column can be inserted into the guide column seat.

7. The scratch-free bending die according to claim 1, characterized in that: An ejector pin is arranged in the mold cavity, and the ejector pin can eject the product in the mold cavity.

8. The scratch-free bending die according to claim 1, characterized in that: The first side mold core is provided with a sliding edge, and the second side mold core is provided with a sliding groove, and the sliding edge slides in the sliding groove.

9. The scratch-free bending die according to claim 1, characterized in that: There are four driving rods, and the four driving rods are arranged in a rectangular shape.

10. A punching machine, characterized in that: It comprises the scratch-free bending mold according to any one of claims 1 to 9, wherein the scratch-free bending mold is arranged on a machine platform, and a safety grating is arranged on the front of the machine platform.

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