A device for preventing product deformation during a punching process

Abstract

This utility model provides a device for preventing product deformation during punching, including a cylinder, a connecting block, a punch, a sleeve, and a spring. During punching, the front end face of the sleeve contacts the punching position on the product. As the cylinder drives the connecting block to move forward, the connecting block will cause the punch to move forward a certain distance relative to the sleeve, allowing the punch to extend axially outward from the inner cavity of the sleeve. The extended punch enters the punching position on the product to perform the punching operation. At the same time, the connecting block compresses the spring as it moves forward. After punching is completed, the cylinder drives the connecting block and the punch to move in the opposite direction to reset, while compressing the spring to reset, applying a force to the front end of the sleeve, so that the front end of the sleeve fits against the punching position on the product. In this way, when the punch moves back after punching, it always moves along the inner cavity of the sleeve and does not sway left and right. Therefore, the product is not squeezed during the retraction process, ensuring the punching quality of the product.

Description

Technical Field

[0001] This utility model relates to the field of blow molding tooling punching technology, specifically to a device for preventing product deformation during the punching process. Background Technology

[0002] Stable punching and automatic punching equipment is a device for cutting blow-molded products. After normal punching, the nozzle support of blow-molded products is prone to deformation, which affects the product qualification rate and work efficiency.

[0003] Existing punching fixtures punch holes directly into products using a punch. During the retraction process, the hole position can easily be squeezed into the product, causing product deformation and failing to meet quality requirements. Furthermore, they are prone to errors, resulting in hole position displacement, making them unstable, inconvenient to use, and inefficient. Utility Model Content

[0004] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a device for preventing product deformation during the punching process, which can effectively prevent product hole deformation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] This application provides a device for preventing product deformation during the punching process, characterized in that it includes:

[0007] cylinder;

[0008] A connecting block is fixedly connected to the piston rod of the cylinder;

[0009] A punch, one end of which is fixedly mounted on the end face of the connecting block, and the other end of which extends horizontally outward;

[0010] A sleeve is fitted onto the outer circumferential surface of the punch along the axial direction of the punch, and the sleeve and the punch form a sliding connection along the axial direction of the punch.

[0011] A spring is fitted onto the outer circumferential surface of the sleeve. One end of the spring is fixed to the sleeve at the end away from the connecting block, and the other end of the spring abuts against the outer end face of the connecting block.

[0012] When the cylinder pushes the punch to punch a hole, the other end of the punch can move axially relative to the inner cavity of the sleeve and extend outward from the inner cavity of the sleeve.

[0013] Furthermore, the connecting block has a sliding hole arranged along the axial direction of the sleeve. The sliding hole includes a first sliding hole portion located at the front end of the connecting block and a second sliding hole portion located near the rear end of the connecting block. The first sliding hole portion and the second sliding hole portion are connected. The opening size of the second sliding hole portion is larger than the opening size of the first sliding hole portion. A limiting portion is provided at the rear end of the sleeve. The outer diameter of the limiting portion is larger than the opening size of the first sliding hole portion. The limiting portion is slidably installed in the second sliding hole portion.

[0014] Furthermore, a slider is fixedly installed at the bottom of the connecting block.

[0015] Furthermore, a mounting hole is provided at the rear end of the connecting block. The mounting hole is coaxially arranged with the sliding hole. One end of the punch is fixedly installed in the mounting hole, and the other end of the punch is horizontally installed in the inner cavity of the sleeve.

[0016] The beneficial effects of this utility model are as follows:

[0017] By employing the aforementioned device to prevent product deformation during the punching process, during punching, the front end face of the sleeve contacts the punching position on the product. As the cylinder drives the connecting block to move forward, the connecting block will cause the punch to move forward a certain distance relative to the sleeve, allowing the punch to extend axially outward from the inner cavity of the sleeve. The extended punch enters the punching position on the product to perform the punching operation. At the same time, the connecting block compresses the spring as it moves forward. After punching is completed, the cylinder drives the connecting block and the punch to move in the opposite direction to reset, while compressing the spring to reset and applying force to the front end of the sleeve, so that the front end of the sleeve fits against the punching position on the product. In this way, during the reverse retraction process after punching, the punch always moves and retracts along the inner cavity of the sleeve without swaying left and right. Therefore, the product will not be squeezed during the retraction process, ensuring the punching quality of the product. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the device for preventing product deformation during the punching process in the embodiments of this application.

[0019] Figure 2 This is a top view of the device for preventing product deformation during the punching process in an embodiment of this application.

[0020] Figure 3 for Figure 2 A schematic diagram of the AA-direction cross-section structure.

[0021] Figure 4 This is a three-dimensional structural diagram of the device for preventing product deformation during the punching process in the embodiments of this application from another angle.

[0022] Figure 5 This is a three-dimensional structural diagram of the sleeve in the embodiments of this application.

[0023] Figure 6 for Figure 3 A magnified schematic diagram of the structure at point B in the diagram.

[0024] Figure 7 for Figure 4 A magnified schematic diagram of the structure at point C.

[0025] In the picture:

[0026] 100 - A device to prevent product deformation during the punching process;

[0027] 200-product;

[0028] 10-Cylinder;

[0029] 20 - Connecting block; 21 - Mounting hole; 22 - Sliding hole; 221 - First sliding hole portion; 222 - Second sliding hole portion;

[0030] 30-Slider;

[0031] 40 - Sleeve; 41 - Slot; 42 - Limiting part;

[0032] 50-Spring;

[0033] 60-Punch. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0035] See appendix Figure 1 To be continued Figure 4 As shown, this embodiment provides a device 100 for preventing product deformation during the punching process, including a cylinder 10, a connecting block 20, a punch 60, a sleeve 40, and a spring 50.

[0036] One end of the connecting block 20 is fixedly connected to the piston rod of the cylinder 10, which drives the connecting block 20 to move back and forth. To improve the smoothness of the forward and backward movement of the connecting block 20, a slider 30 is fixedly installed at the bottom end of the connecting block 20.

[0037] One end of the punch 60 is fixedly mounted on the connecting block 20, and the punch 60 moves back and forth synchronously with the connecting block 20. A sleeve 40 is fitted onto the outer circumferential surface of the punch 60 along its axial direction, and the other end of the punch 60 is installed in the inner cavity of the sleeve 40 along its axial direction, forming a sliding connection between the sleeve 40 and the punch 60 along its axial direction. A spring 50 is fitted onto the outer circumferential surface of the sleeve 40, with one end fixed to the sleeve 40 at the end away from the connecting block 20 (i.e., the front end position of the sleeve 40), and the other end of the spring 50 abutting against the outer end face of the connecting block 20. (See attached diagram.) Figure 4 Appendix Figure 5 and attached Figure 7 As shown, in this embodiment, a groove 41 is formed on the outer end face of the front end of the sleeve 40, and one end of the spring 50 is clamped and installed in the groove 41.

[0038] See attached document Figure 3 Appendix Figure 4 Appendix Figure 6 and attached Figure 7 As shown, when punching is required on product 200, the front end face of sleeve 40 abuts against the location on product 200 where a hole needs to be punched. Then, cylinder 10 drives connecting block 20 to move forward. During this process, connecting block 20 causes punch 60 to move forward a certain distance relative to sleeve 40, allowing punch 60 to extend axially outward from the inner cavity of sleeve 40. The extended punch 60 then enters the punching location on product 200 to perform the punching operation. Simultaneously, during the forward movement, connecting block 20 pushes against spring 50. The compression of the spring 50 causes the spring 50 to be in a compressed state. After punching is completed, the cylinder 10 drives the connecting block 20 and the punch 60 to move in the opposite direction and reset. At the same time, the spring 50 is compressed and reset, applying force to the front end of the sleeve 40 so that the front end of the sleeve 40 fits against the punching position of the product 200. In this way, when the punch 60 moves in the opposite direction after punching is completed and retracts, it always moves and retracts along the inner cavity of the sleeve 40 without swaying left and right. Therefore, the product 200 will not be squeezed during the retraction process, ensuring the punching quality of the product 200.

[0039] Continue to refer to the appendix Figure 3 and attached Figure 6 As shown, in this embodiment, the connecting block 20 has a sliding hole 22 arranged along the axial direction of the sleeve 40. The sliding hole 22 includes a first sliding hole portion 221 located at the front end of the connecting block 20 and a second sliding hole portion 222 located near the rear end of the connecting block 20. The first sliding hole portion 221 and the second sliding hole portion 222 are connected. The opening size of the second sliding hole portion 222 is larger than the opening size of the first sliding hole portion 221. A limiting portion 42 is provided at the rear end of the sleeve 40 (see attached figure). Figure 5As shown), the outer diameter of the limiting part 42 is larger than the opening size of the first sliding hole part 221, and the limiting part 42 is slidably installed in the second sliding hole part 222.

[0040] By providing a second sliding hole 222 within the connecting block 20 and a limiting part 42 at the rear end of the sleeve 40, when the cylinder 10 pushes the punch 60 to punch, the sleeve 40 cannot move back and forth because its front end face is pressed against the punching position of the product 200. However, due to the presence of the second sliding hole 222, as the cylinder 10 pushes the connecting block 20 and the punch 60 forward, the connecting block 20 will drive the second sliding hole 222 forward, causing the end face of the limiting part 42 of the sleeve 40 to contact the bottom end face of the second sliding hole 222. When the end face of the limiting part 42 interferes with the bottom face of the second sliding hole part 222, the connecting block 20 cannot move forward. During the process of the connecting block 20 driving the second sliding hole part 222 to move forward, the connecting block 20 will simultaneously drive the other end of the punch 60 to move from the inner cavity of the sleeve 40 and extend outward. The other end of the punch 60 enters the punching position of the product 200 to realize the punching process of the product 200. After the end face of the limiting part 42 of the sleeve 40 contacts the bottom face of the second sliding hole part 222, the punch 60 stops moving forward and the punching operation is completed.

[0041] Continue to refer to the appendix Figure 3 and attached Figure 6 As shown, a mounting hole 21 is provided at the rear end of the connecting block 20. The mounting hole 21 is coaxial with the sliding hole. One end of the punch is fixedly installed in the mounting hole 21, and the other end of the punch is horizontally installed in the inner cavity of the sleeve 40. That is, when the connecting block 20 drives the punch 60 to move back and forth, the punch 60 moves back and forth in the inner cavity of the sleeve 40.

[0042] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An apparatus for preventing product deformation during a piercing process, characterized by, include: cylinder; A connecting block is fixedly connected to the piston rod of the cylinder; A punch, one end of which is fixedly mounted on the end face of the connecting block, and the other end of which extends horizontally outward; A sleeve is fitted onto the outer circumferential surface of the punch along the axial direction of the punch, and the sleeve and the punch form a sliding connection along the axial direction of the punch. A spring is fitted onto the outer circumferential surface of the sleeve. One end of the spring is fixed to the sleeve at the end away from the connecting block, and the other end of the spring abuts against the outer end face of the connecting block. When the cylinder pushes the punch to punch a hole, the other end of the punch can move axially relative to the inner cavity of the sleeve and extend outward from the inner cavity of the sleeve.

2. The device for preventing product deformation during punching according to claim 1, characterized in that, The connecting block has a sliding hole arranged along the axial direction of the sleeve. The sliding hole includes a first sliding hole portion located at the front end of the connecting block and a second sliding hole portion located near the rear end of the connecting block. The first sliding hole portion and the second sliding hole portion are connected. The opening size of the second sliding hole portion is larger than the opening size of the first sliding hole portion. A limiting portion is provided at the rear end of the sleeve. The outer diameter of the limiting portion is larger than the opening size of the first sliding hole portion. The limiting portion is slidably installed in the second sliding hole portion.

3. A device for preventing product deformation during punching according to claim 1 or 2, characterized in that, A slider is fixedly installed at the bottom of the connecting block.

4. The device for preventing product deformation during punching according to claim 2, characterized in that, The connecting block has a mounting hole at its rear end, which is coaxial with the sliding hole. One end of the punch is fixedly installed in the mounting hole, and the other end of the punch is horizontally installed in the inner cavity of the sleeve.

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