In-mold quick-change punch device

Abstract

The utility model relates to the technical field of automobile die application, especially to a quick switching punch device in mould, including the organism, the inner wall of organism is equipped with cavity, the inner wall sliding connection of cavity has the movable block of liftable movement, the bottom end of movable block is connected with the mould punch of clamping, the bottom end fixed connection of movable block has two movable columns that are mirror image distribution, the outer wall sliding connection of mould punch has two limit blocks that are mirror image distribution and with the inner wall sliding connection of organism, the outer wall fixed connection of limit block has the connecting rod, the outer wall sliding connection of connecting rod has the installation block with the outer wall sliding connection of organism, through the on-off state of accurate control electromagnet, realize its intelligent separation with magnetic block, limit block is smoothly pulled away from mould punch, makes mould punch under the action of gravity naturally falls to the above buffer pad, completes the disassembly and replacement operation, discarded traditional tool, improved the replacement efficiency, effectively avoided the safety accident that may be caused because of improper tool use simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of automotive mold application technology, and in particular to an in-mold quick-change punch device. Background Technology

[0002] Cold stamping dies are core tools in sheet metal processing. They use a press to apply external force to cause the material to undergo plastic deformation or separation within the die cavity, thereby obtaining parts of the required shape and size. Their production involves multiple stages such as design, processing, assembly, and debugging, and requires comprehensive consideration of material properties, product structure, and production efficiency.

[0003] After confirming that the press is operating normally and that parameters such as slide stroke, speed, and pressure meet the requirements, fix the lower die on the press worktable to ensure accurate positioning. Install the upper die on the slide, adjust the gap between the upper and lower dies to ensure alignment, install the guide device to ensure smooth movement of the upper and lower dies, and use positioning pins, guide plates, and other devices to start the press. Adjust the pressure, stroke, and positioning accuracy, and feed the material into the mold cavity, ensuring that the feeding length is consistent each time. Start the press again to move the upper die downwards to complete the stamping process. After the material is stamped, push the part out of the mold using a stripper plate or ejector. Check the dimensional accuracy, shape, and surface quality of the part. Rework or scrap any unqualified parts. Record key data during the production process to provide a reference for subsequent production.

[0004] However, traditional punch replacement requires threaded connection or tapered sleeve, which necessitates multiple bolt removals and adjustments to the clearance. Each replacement takes several minutes to tens of minutes, severely impacting production continuity and reducing work efficiency. The replacement process relies on specialized tools such as wrenches and micrometers, and requires repeated adjustments to the concentricity and perpendicularity of the punch and template. This places high demands on the operator's skills, and the confined operating space increases the risk of hand pinching or tool slippage causing injury. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This solves the problem of cumbersome punch replacement in existing devices, avoids affecting work efficiency, and improves operator safety.

[0007] (II) Technical Solution

[0008] In view of the above-mentioned problem of replacing the punch, this utility model is proposed.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an in-mold quick-switching punch device, including a body, an inner wall of the body having a cavity, a movable block that can be raised and lowered being slidably connected to the inner wall of the cavity, a pressure die punch being engaged at the bottom end of the movable block, two movable columns that are mirror-distributed being fixedly connected to the bottom end of the movable block, two limiting blocks that are mirror-distributed and slidably connected to the inner wall of the body being slidably connected to the outer wall of the pressure die punch, a connecting rod being fixedly connected to the outer wall of the limiting block, an mounting block that is slidably connected to the outer wall of the connecting rod being slidably connected to the outer wall of the body, and a plurality of arc-shaped blocks that are distributed in a circular array being fixedly connected to the inner wall of the cavity.

[0010] As a preferred embodiment of the in-mold rapid punch switching device of this utility model, a cylinder is fixedly installed on the inner wall of the cavity, and a pull rod is fixedly connected to the output end of the cylinder.

[0011] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the outer wall of the pull rod is fixedly connected to a wedge block that is slidably connected to the top end of the moving block, and both ends of the outer wall of the moving block are fixedly connected to a connecting plate.

[0012] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the inner wall of the connecting plate is slidably connected to a guide rod that is fixedly connected to the cavity, and the outer wall of the movable column is slidably connected to a return spring.

[0013] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the bottom end of the machine body is provided with a through hole that facilitates the sliding of the die punch and communicates with the cavity, and an electromagnet is fixedly connected to the bottom end of the moving block.

[0014] As a preferred embodiment of the in-mold rapid punch switching device of this utility model, the bottom end of the electromagnet is slidably connected to a magnetic block that is fixedly connected to the top end of the die punch, and the bottom end of the limiting block is fixedly connected to a protrusion plate.

[0015] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the inner wall of the cavity is slidably connected to two mirror-distributed movable plates, and a tension spring is connected between the outer wall of the movable plates and the outer wall of the protrusion plate.

[0016] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, a rectangular tube is fixedly connected to the outer wall of the limiting block, and a rectangular block is slidably connected to the inner wall of the rectangular tube, which is fixedly connected to the outer wall of the mounting block and slidably connected to the outer wall of the moving plate.

[0017] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the top end of the arc-shaped block is fixedly connected to a buffer pad that is slidably connected to the outer wall of the pressure die punch.

[0018] As a preferred embodiment of the in-mold rapid switching punch device of this utility model, the inner wall of the cavity is fixedly connected with a plurality of guide plates that are evenly distributed and slidably connected to the outer wall of the die punch.

[0019] The beneficial effects of this utility model are:

[0020] 1. By precisely controlling the on / off state of the electromagnet, intelligent separation from the magnetic block is achieved. As the connecting rod moves freely, the limiting block is smoothly pulled away from the die punch, allowing the die punch to fall naturally above the buffer pad under gravity. At this point, the disassembly and replacement can be easily completed by simply rotating the die punch. This eliminates the cumbersome operation process of traditional tools such as wrenches and micrometers, significantly improving replacement efficiency, reducing reliance on the operator's professional skills, and effectively avoiding safety accidents that may be caused by improper use of tools, thus building a more solid safety barrier for the operator.

[0021] 2. The PLC controls the cylinder to push the wedge block to move back and forth, and the return spring drives the moving block to move up and down. The moving block drives the die punch to continuously punch the die, making the up and down movement of the die punch faster and more accurate, significantly improving production efficiency. Furthermore, the control logic and parameter settings can be easily adjusted according to actual production needs to adapt to stamping production with different specifications and process requirements. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model.

[0025] Figure 3 This is a schematic diagram of the overall structure of the movable block of this utility model.

[0026] Figure 4 This is a schematic diagram of the arc-shaped block installation structure of this utility model.

[0027] Figure 5 This is a schematic diagram of the installation structure of the limiting block of this utility model.

[0028] Explanation of reference numerals in the attached drawings: 1. Body; 2. Mounting block; 3. Pressing die punch; 4. Tie rod; 5. Wedge block; 6. Moving block; 7. Guide rod; 8. Connecting plate; 9. Electromagnet; 10. Movable column; 11. Return spring; 12. Arc block; 13. Buffer pad; 14. Guide plate; 15. Limiting block; 16. Magnetic block; 17. Connecting rod; 18. Tension spring; 19. Moving plate. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] Example 1

[0031] Reference Figure 1-3 This is the first embodiment of the present utility model, which provides an in-mold quick-switching punch device, including a body 1. The inner wall of the body 1 has a cavity. A movable block 6 that can be raised and lowered is slidably connected to the inner wall of the cavity. A groove is provided at the top of the movable block 6. A pressure die punch 3 is engaged at the bottom of the movable block 6. Two movable columns 10 that are distributed in a mirror image are fixedly connected to the bottom of the movable block 6.

[0032] The movable column 10 is used to transmit the elastic force of the return spring 11 to reset the moving block 6. The outer wall of the die punch 3 is slidably connected to two limit blocks 15 that are mirror-distributed and slidably connected to the inner wall of the body 1. The outer walls of the limit blocks 15 are chamfered at both ends. The outer wall of the limit blocks 15 is fixedly connected to a connecting rod 17. The outer wall of the connecting rod 17 is provided with a disc to facilitate pulling the connecting rod 17. The outer wall of the connecting rod 17 is slidably connected to a mounting block 2 that is slidably connected to the outer wall of the body 1. The inner wall of the cavity is fixedly connected to multiple arc-shaped blocks 12 that are distributed in a circular array. The arc-shaped blocks 12 receive the falling die punch 3 through a buffer pad 13.

[0033] A cylinder is fixedly installed on the inner wall of the cavity. A PLC controller is installed on the inner wall of the machine body 1. As the core control unit of the system, it is responsible for receiving input signals, performing logical operations and outputting control signals. A pull rod 4 is fixedly connected to the output end of the cylinder. A wedge block 5 is fixedly connected to the outer wall of the pull rod 4 and slides on the top of the moving block 6. A protrusion is provided at the bottom end of the wedge block 5 and slides in the groove of the moving block 6. A connecting plate 8 is fixedly connected to both ends of the outer wall of the moving block 6. A through hole is provided on the outer wall of the connecting plate 8 to facilitate the sliding of the guide rod 7.

[0034] The inner wall of the connecting plate 8 is slidably connected to the guide rod 7 which is fixedly connected to the cavity, and the outer wall of the movable column 10 is slidably connected to the return spring 11, which is used to push the moving block 6 to reset. The bottom end of the machine body 1 is provided with a through hole that facilitates the sliding of the die punch 3 and communicates with the cavity.

[0035] During use, after the PLC is powered on, it first performs system initialization, including reading preset parameters and checking the status of each component. The PLC sends a signal to the solenoid valve through the output port to open the air inlet of the cylinder. The cylinder drives the pull rod 4 to extend. The pull rod 4 presses the moving block 6 through the wedge block 5. Since the bottom end of the wedge block 5 has a protrusion and the outer wall of the protrusion has rounded corners, and the top of the moving block 6 has a groove that fits with the protrusion, and the outer wall of the groove has a slope, it is easy for the protrusion to slide out and the protrusion to disengage from the inner wall of the groove.

[0036] Simultaneously, the moving block 6 drives the connecting plate 8 to move and descend along the guide rod 7, and the moving block 6 squeezes the return spring 11 through the movable column 10. The moving block 6 drives the die punch 3 to extend and apply pressure. When the pull rod 4 retracts, the return spring 11 releases its elastic force to push the movable column 10. The movable column 10 pushes the moving block 6 to rise. The moving block 6 drives the connecting plate 8 to move along the guide rod 7. The outer wall of the protrusion of the wedge block 5 disengages from the groove of the moving block 6. At this time, the die punch 3 retracts, and the cylinder continuously drives the die punch 3 to reciprocate and extend.

[0037] Example 2

[0038] Reference Figure 1-5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: an electromagnet 9 is fixedly connected to the bottom end of the moving block 6, and a relay is installed on the inner wall of the body 1 to control the magnetic force of the electromagnet 9. By controlling whether the coil of the relay is energized or not, the circuit of the electromagnet 9 is controlled to open or close, thereby realizing the rapid opening and closing of the magnetic force of the electromagnet 9. A magnetic block 16 is slidably connected to the bottom end of the electromagnet 9 and fixedly connected to the top end of the die punch 3. The magnetic block 16 is used to fit with the electromagnet 9. A protruding plate is fixedly connected to the bottom end of the limiting block 15.

[0039] The inner wall of the cavity is slidably connected to two mirror-distributed movable plates 19. A tension spring 18 is connected between the outer wall of the movable plate 19 and the outer wall of the protrusion plate. The tension spring 18 is used to push the limiting block 15. A rectangular tube is fixedly connected to the outer wall of the limiting block 15. A rectangular block is slidably connected to the inner wall of the rectangular tube, which is fixedly connected to the outer wall of the mounting block 2 and slidably connected to the outer wall of the movable plate 19.

[0040] The top of the arc-shaped block 12 is fixedly connected to a buffer pad 13 that is slidably connected to the outer wall of the die punch 3. The buffer pad 13 is made of rubber to prevent the die punch 3 from falling quickly after being detached from the installation and injuring objects or people. The inner wall of the cavity is fixedly connected to multiple evenly distributed guide plates 14 that are slidably connected to the outer wall of the die punch 3. The outer wall of the die punch 3 is provided with an arc-shaped plate to facilitate movement along the guide plate 14.

[0041] During use, the relay controls the electromagnet 9 to quickly disconnect from the magnetic block 16, pulling the two connecting rods 17 to drive the limiting block 15 to squeeze the tension spring 18. The limiting block 15 disengages from the inner wall of the die punch 3, and the die punch 3 descends along the guide plate 14 under the influence of gravity, landing on the top of the buffer pad 13. After rotating the die punch 3 again, it is removed from the gap between each pair of arc-shaped blocks 12. During installation, the die punch 3 is aligned with the gap and inserted, then rotated. The die punch 3 is pushed to move and squeeze the limiting block 15. Since the outer wall of the limiting block 15 has a chamfer, the limiting block 15 retracts under force. When passing through the limiting slot, the tension spring 18 releases its elastic force to push the limiting block 15 into the inner wall of the die punch 3. At the same time, the relay controls the electromagnet 9 to connect and fit with the magnetic block 16. The operation is now complete.

[0042] The remaining structure is the same as that in Example 1.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An in-mold rapid punch switching device, characterized in that: The device includes a body (1), the inner wall of which has a cavity. A movable block (6) that can be raised and lowered is slidably connected to the inner wall of the cavity. A die punch (3) is engaged at the bottom end of the movable block (6). Two movable columns (10) that are distributed in a mirror image are fixedly connected to the bottom end of the movable block (6). Two limiting blocks (15) that are distributed in a mirror image and slidably connected to the inner wall of the body (1) are slidably connected to the outer wall of the die punch (3). A connecting rod (17) is fixedly connected to the outer wall of the limiting block (15). An mounting block (2) that is slidably connected to the outer wall of the connecting rod (17) is slidably connected to the outer wall of the body (1). A plurality of arc-shaped blocks (12) that are distributed in a circular array are fixedly connected to the inner wall of the cavity.

2. The in-mold rapid punch switching device according to claim 1, characterized in that: A cylinder is fixedly installed on the inner wall of the cavity, and a pull rod (4) is fixedly connected to the output end of the cylinder.

3. The in-mold rapid punch switching device according to claim 2, characterized in that: The outer wall of the pull rod (4) is fixedly connected to a wedge block (5) that is slidably connected to the top of the moving block (6), and both ends of the outer wall of the moving block (6) are fixedly connected to a connecting plate (8).

4. The in-mold rapid punch switching device according to claim 3, characterized in that: The inner wall of the connecting plate (8) is slidably connected to a guide rod (7) that is fixedly connected to the cavity, and the outer wall of the movable column (10) is slidably connected to a return spring (11).

5. The in-mold rapid punch switching device according to claim 1, characterized in that: The bottom end of the body (1) is provided with a through hole that facilitates the sliding of the die punch (3) and communicates with the cavity, and the bottom end of the moving block (6) is fixedly connected with an electromagnet (9).

6. The in-mold rapid punch switching device according to claim 5, characterized in that: The bottom end of the electromagnet (9) is slidably connected to a magnetic block (16) which is fixedly connected to the top end of the die punch (3), and the bottom end of the limiting block (15) is fixedly connected to a protruding plate.

7. The in-mold rapid punch switching device according to claim 6, characterized in that: The inner wall of the cavity is slidably connected to two mirror-distributed movable plates (19), and a tension spring (18) is connected between the outer wall of the movable plate (19) and the outer wall of the convex plate.

8. The in-mold rapid punch switching device according to claim 1, characterized in that: The outer wall of the limiting block (15) is fixedly connected to a rectangular tube, and the inner wall of the rectangular tube is slidably connected to a rectangular block that is fixedly connected to the outer wall of the mounting block (2) and slidably connected to the outer wall of the moving plate (19).

9. The in-mold rapid punch switching device according to claim 1, characterized in that: The top of the arc-shaped block (12) is fixedly connected to a buffer pad (13) that is slidably connected to the outer wall of the die punch (3).

10. The in-mold rapid punch switching device according to claim 1, characterized in that: The inner wall of the cavity is fixedly connected with a plurality of evenly distributed guide plates (14) that are slidably connected to the outer wall of the die punch (3).

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