A multi-station quick-change fixture for die machining

Abstract

This utility model discloses a multi-station quick-change fixture for die machining, relating to the field of die machining technology. It includes a mounting frame with a mounting box mounted on top. A mounting plate, fixedly connected to the mounting frame, is mounted below the mounting box. A die body is located at the center of the bottom of the mounting box. The mounting box is equipped with a clamping mechanism, which includes two fixed plates symmetrically mounted on both sides of the mounting box against its inner wall. A sliding plate, against the inner wall of the mounting box, is slidably connected above the fixed plates. A sliding column, extending vertically to the bottom of the fixed plates, is fixedly mounted on the sliding plate. A first rotating rod is hinged to the outer arc wall of the sliding column near the center of the mounting box. In this utility model, the clamping mechanism achieves initial clamping through the interlocking of the arc-shaped locking block with the edge of the die body, and secondary clamping through the clamping plate tightly adhering to the outer wall of the die body under the action of a spring.

Description

Technical Field

[0001] This utility model relates to the field of die machining technology, specifically a multi-station quick-switching fixture for die machining. Background Technology

[0002] In the field of die machining, the application of multi-station quick-change fixtures is of great significance for improving production efficiency and machining accuracy. However, existing fixtures often encounter offset when machining dies, which seriously affects machining quality and production efficiency.

[0003] In existing technologies, the design of jigs often focuses on quick switching and convenient clamping, but there are obvious shortcomings in ensuring machining accuracy. Specifically, when machining dies, due to the influence of various factors such as die material, clamping method, and machining conditions, the die is prone to displacement during the machining process. This displacement not only leads to inaccurate machining dimensions, but also increases the workload of subsequent assembly processes, and may even lead to the scrapping of the die. Although increasing the clamping force can reduce displacement to a certain extent, excessive clamping force often leads to die deformation, especially for some dies with softer materials or complex shapes, where the deformation problem is particularly prominent. Utility Model Content

[0004] The purpose of this invention is to provide a multi-station quick-change fixture for die machining to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides a multi-station quick-change fixture for die processing, including a mounting frame. A mounting box is mounted on the top of the mounting frame, and a mounting plate fixedly connected to the mounting frame is mounted below the mounting box. A die body is located at the bottom center of the mounting box. The mounting box is equipped with a clamping mechanism, which includes two fixed plates symmetrically mounted on both sides of the mounting box against the inner wall of the mounting box. A sliding plate against the inner wall of the mounting box is slidably connected above the fixed plate. A sliding column extending vertically to the bottom of the fixed plate is fixedly mounted on the sliding plate. A first rotating rod is hinged to the outer arc wall of the sliding column near the center of the mounting box. A mounting seat is fixedly mounted on the upper surface of the fixed plate. The top of the mounting seat is rotatably connected to the first rotating rod. A second rotating rod is rotatably connected to the end of the first rotating rod away from the sliding column. An abutment post is hinged between the mounting seat and the die body on the upper surface of the fixed plate. The side of the abutment post near the mounting seat is hinged to one end of the second rotating rod. An arc-shaped locking block is mounted on the top of the side of the abutment post near the die body.

[0006] Furthermore, a telescopic guide post is connected to the center of the lower surface of the sliding column, and a fixed platform is connected to the fixed end of the telescopic guide post. An installation block is fixedly installed on the upper surface of the mounting box, and the fixed platform is fixedly connected to the installation block. A third rotating rod is hinged to the lower surface of the sliding column. One end of the third rotating rod is hinged to a moving rod that is slidably connected to the upper surface of the fixed platform. The other end of the moving rod is fixedly connected to a moving block. The side wall of the moving block abuts against the side of the fixed platform near the die body. A clamping plate that abuts against the outer side wall of the die body is fixedly installed on the side of the moving block away from the moving rod.

[0007] Furthermore, the upper surface of the fixed platform is provided with a groove, and a slider that matches the groove is slidably connected in the groove. The slider is sleeved on the outer wall of the moving rod.

[0008] Furthermore, the telescopic guide column is fitted with a first spring, and the upper and lower ends of the first spring are respectively fixedly connected to the bottom end of the sliding column and the upper surface of the fixed platform.

[0009] Furthermore, a second spring is fixedly connected to the side of the mounting block near the movable block, and the other end of the second spring is fixedly connected to the movable block.

[0010] Furthermore, two connecting rods are connected to the opposite ends of the two sliding plates. A threaded rod is threaded to the center of the connecting rod. A vertical rod is fixedly connected to the bottom end of the threaded rod on the horizontal surface of the fixed plate. The bottom end of the vertical rod is rotatably connected to the upper surface of the mounting plate. A sprocket is sleeved on the outer arc wall below the mounting box of the two vertical rods. A chain is provided between the two sprockets and they are connected by chain drive.

[0011] Furthermore, a motor is fixedly mounted on the upper surface of the mounting plate, and the drive shaft of the motor is connected to a driving bevel gear. The driving bevel gear meshes with a driven bevel gear, and the driven bevel gear is fixedly connected to the vertical rod.

[0012] Furthermore, the arc-shaped snap-fit ​​block is fastened to the edge of the die body, and a gasket is installed on the side of the clamping plate near the die body.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, through the setting of a clamping mechanism, achieves initial clamping by the interlocking of the arc-shaped snap-fit ​​block with the edge of the die body, and achieves secondary clamping by the clamping plate tightly adhering to the outer wall of the die body under the action of the spring, thereby ensuring the stability of the die body during the processing and improving the processing accuracy.

[0015] 2. This utility model uses the transmission of the motor-driven sprocket and chain, as well as the rotation of the threaded rod, to move the two sliding plates synchronously and smoothly, thereby achieving rapid clamping and release of the die body. A gasket is installed on the side of the clamping plate close to the die body, which not only avoids damage to the die body during clamping, but also reduces vibration and noise to a certain extent, protecting the integrity of the mold. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main body of a multi-station quick-switching fixture for die machining.

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0018] Figure 3 This is a schematic diagram of the clamping mechanism in a multi-station quick-switching fixture for die machining.

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the structure above the mounting plate in a multi-station quick-change fixture for die machining.

[0021] In the picture:

[0022] 1. Mounting box; 2. Mounting frame; 3. Mounting plate; 4. Die body; 5. Fixing plate; 6. Sliding plate; 7. Sliding column; 8. Mounting seat; 9. First rotating rod; 10. Abutting column; 11. Second rotating rod; 12. Arc-shaped locking block; 13. Telescopic guide column; 14. First spring; 15. Mounting block; 16. Fixing platform; 17. Third rotating rod; 18. Moving rod; 19. Slider; 20. Slide groove; 21. Moving block; 22. Clamping plate; 23. Second spring; 24. Threaded rod; 25. Connecting rod; 26. Vertical rod; 27. Sprocket; 28. Driven bevel gear; 29. ​​Driving bevel gear; 30. Motor; 31. Chain. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5 This utility model provides a technical solution:

[0025] See Figure 1 and Figure 2 As shown, a multi-station quick-change fixture for die machining includes a mounting frame 2, a mounting box 1 mounted on top of the mounting frame 2, a mounting plate 3 fixedly connected to the mounting frame 2 mounted below the mounting box 1, a die body 4 located at the center of the bottom of the mounting box 1, and a clamping mechanism. The clamping mechanism includes two fixed plates 5 symmetrically mounted on both sides of the mounting box 1 against the inner wall of the mounting box 1. A sliding plate 6 slidably connected above the fixed plates 5 against the inner wall of the mounting box 1 is also present. A vertical sliding post 7 is fixedly mounted on the sliding plate 6, extending vertically to the bottom of the fixed plate 5. The sliding post 7 is close to... A first rotating rod 9 is hinged to the outer arc wall at the center of the mounting box 1. A mounting base 8 is fixedly installed on the upper surface of the fixing plate 5. The top of the mounting base 8 is rotatably connected to the first rotating rod 9. A second rotating rod 11 is rotatably connected to the end of the first rotating rod 9 away from the sliding column 7. An abutment post 10 is hinged to the upper surface of the fixing plate 5 between the mounting base 8 and the die body 4. The side of the abutment post 10 near the mounting base 8 is hinged to one end of the second rotating rod 11. An arc-shaped locking block 12 is installed on the top of the side of the abutment post 10 near the die body 4. The arc-shaped locking block 12 is fastened to the edge of the die body 4.

[0026] In the specific implementation process, a mounting plate 3 is set below the mounting box 1 and is firmly connected to the mounting frame 2 to ensure the stability of the entire structure. Two fixed plates 5 serve as the basic support for the clamping mechanism. Above the fixed plates 5, a sliding plate 6 is slidably connected to fit the inner wall of the mounting box 1. The up and down movement of the sliding plate 6 can drive the sliding column 7 to move up and down. On the outer arc wall of the sliding column 7 near the center of the mounting box 1, a first rotating rod 9 is hinged. At the same time, a mounting seat 8 is fixedly installed on the upper surface of the fixed plate 5. The top of the mounting seat 8 is rotatably connected to the first rotating rod 9. In this way, when the sliding plate 6 drives the sliding column 7 to move up and down, the first rotating rod 9 will rotate around the mounting seat 8. The rotation of the first rotating rod 9 will drive the second rotating rod 11 and the abutment column 10 to rotate accordingly. When the abutment column 10 rotates downward, it is engaged with the edge of the die body 4 through the arc-shaped snap-fit ​​block 12, thereby clamping the die body 4.

[0027] See Figure 3 and Figure 4As shown, a telescopic guide post 13 is connected to the center of the lower surface of the sliding post 7. A fixed platform 16 is connected to the fixed end of the telescopic guide post 13. An installation block 15 is fixedly installed on the upper surface of the mounting box 1. The fixed platform 16 is fixedly connected to the installation block 15. A third rotating rod 17 is hinged to the lower surface of the sliding post 7. One end of the third rotating rod 17 is hinged to a moving rod 18 that is slidably connected to the upper surface of the fixed platform 16. A moving block 21 is fixedly connected to the other end of the moving rod 18. The side wall of the moving block 21 abuts against the side of the fixed platform 16 near the die body 4. The side of the moving block 21 away from the moving rod 18 is fixedly installed with... A clamping plate 22 abuts against the outer wall of the die body 4. A gasket is installed on the side of the clamping plate 22 near the die body 4. A slide groove 20 is provided on the upper surface of the fixed platform 16. A slider 19 matching the slide groove 20 is slidably connected in the slide groove 20. The slider 19 is sleeved on the outer wall of the moving rod 18. A first spring 14 is sleeved on the telescopic guide column 13. The upper and lower ends of the first spring 14 are fixedly connected to the bottom end of the sliding column 7 and the upper surface of the fixed platform 16, respectively. A second spring 23 is fixedly connected to the side of the mounting block 15 near the moving block 21. The other end of the second spring 23 is fixedly connected to the moving block 21.

[0028] In the specific implementation process, when it is necessary to clamp the die body 4, the arc-shaped locking block 12 above it initially clamps the die body 4. At the same time, the up and down movement of the sliding column 7 will drive the telescopic guide column 13 to move. Since the telescopic guide column 13 is fixedly connected to the fixed platform 16, and the sliding column 7 is connected to the moving rod 18 through the hinged third rotating rod 17, the downward movement of the sliding column 7 will drive the third rotating rod 17 to rotate, thereby pushing the moving rod 18 to slide in the slide groove 20 of the fixed platform 16. As the moving rod 18 slides, the slider 19 sleeved on its outer side wall also moves accordingly in the slide groove 20, ensuring the stable sliding of the moving rod 18. At the same time, the sliding of the moving rod 18 drives the movement of the moving block 21. Since the side wall of the moving block 21 abuts against the fixed platform 16, it will move along the surface of the fixed platform 16 towards the die body 4.

[0029] During the movement of the moving block 21, the clamping plate 22, which is fixedly connected to the side away from the moving rod 18, also gradually approaches the outer wall of the die body 4. Since a gasket is installed on the side of the clamping plate 22 that is close to the die body 4, the gasket can buffer and protect the die body 4 when the clamping plate 22 contacts it, thus avoiding damage to the die body 4. In addition, the first spring 14 is sleeved on the telescopic guide post 13. When the sliding post 7 moves downward, the first spring 14 will be compressed, thereby generating a certain elastic force. This elastic force can help the clamping plate 22 fit more tightly against the outer wall of the die body 4, improving the clamping effect. At the same time, after the clamping plate 22 clamps the die body 4, the second spring 23 will maintain a certain tension, further ensuring the stability and clamping force of the clamping plate 22.

[0030] When it is necessary to release the die body 4, simply move the sliding plate 6 upward. The telescopic guide post 13 will push the sliding post 7 upward under the elastic force of the first spring 14. As the sliding post 7 moves upward, the third rotating rod 17, the moving rod 18, the moving block 21 and the clamping plate 22 will also move accordingly, eventually causing the clamping plate 22 to move away from the outer wall of the die body 4, thus releasing the die body 4.

[0031] See Figure 5 As shown, two connecting rods 25 are connected to the opposite ends of the two sliding plates 6. A threaded rod 24 is threadedly connected to the center of the connecting rod 25. A vertical rod 26 is fixedly connected to the bottom end of the threaded rod 24 on the horizontal surface of the fixed plate 5. The bottom end of the vertical rod 26 is rotatably connected to the upper surface of the mounting plate 3. A sprocket 27 is sleeved on the outer arc wall of the two vertical rods 26 below the mounting box 1. A chain 31 is provided between the two sprockets 27 and is connected by transmission through the chain 31. A motor 30 is fixedly installed on the upper surface of the mounting plate 3. The drive shaft of the motor 30 is driven by a driving bevel gear 29. The driving bevel gear 29 meshes with a driven bevel gear 28. The driven bevel gear 28 is fixedly connected to the vertical rod 26. In the specific implementation process, when it is necessary to switch the die body 4, the drive shaft of the motor 30 first drives the active bevel gear 29 to rotate. Since the active bevel gear 29 meshes with the driven bevel gear 28, the driven bevel gear 28 will also rotate. The driven bevel gear 28 is fixedly connected to the vertical rod 26, so the vertical rod 26 will rotate with the rotation of the driven bevel gear 28. The rotation of the vertical rod 26 drives the rotation of the sprocket 27 sleeved on its outer arc wall. Since the two sprockets 27 are connected by a chain 31, when one sprocket 27 rotates, the other sprocket 27 will also rotate synchronously, so that the two vertical rods 26 can synchronously drive the two threaded rods 24 to rotate. The rotation of the threaded rods 24 can push or pull the connecting rod 25, thereby changing the position of the sliding plate 6, realizing the clamping and release of the die body 4. Since the end of the vertical rod 26 is located on the horizontal plane of the fixed plate 5, it can prevent the sliding plate 6 from excessively shifting.

[0032] Working principle:

[0033] Step 1: When it is necessary to clamp the die body 4, the motor 30 starts. The start of the motor 30 will drive the threaded rod 24 to rotate. The sliding plate 6 moves downward under the action of the threaded rod 24, which in turn drives the sliding column 7 and the first rotating rod 9 connected to it to move downward synchronously. The first rotating rod 9 rotates around the mounting base 8, which in turn pushes the second rotating rod 11 and the abutment column 10 to rotate. The arc-shaped locking block 12 at the end of the abutment column 10 then moves closer to the edge of the die body 4 and engages, achieving initial clamping.

[0034] Step 2: At the same time, the downward movement of the sliding column 7 is also transmitted to the moving rod 18 through the third rotating rod 17, so that it slides smoothly in the groove 20 of the fixed platform 16. The sliding of the moving rod 18 drives the moving block 21 and the clamping plate 22 to move closer to the outer wall of the die body 4. In addition, the compression force of the first spring 14 and the tension of the second spring 23 work together to ensure that the clamping plate 22 fits tightly against the die body 4, realizing secondary clamping.

[0035] Step 3: When it is necessary to release the die body 4, the motor 30 reverses, causing the sliding plate 6 to move upward, which drives the sliding column 7, the first rotating rod 9, the second rotating rod 11 and the abutment column 10 to move upward synchronously. The arc-shaped locking block 12 then separates from the die body 4, realizing the initial release. At the same time, the telescopic guide column 13 pushes the sliding column 7 to continue to move upward under the elastic force of the first spring 14. Through the transmission of the third rotating rod 17, the moving rod 18 and other components, the clamping plate 22 is moved away from the outer wall of the die body 4, completing the secondary release.

Claims

1. A multi-station quick-change fixture for die machining, comprising a mounting frame (2), a mounting box (1) mounted on the top of the mounting frame (2), a mounting plate (3) fixedly connected to the mounting frame (2) mounted below the mounting box (1), and a die body (4) disposed at the bottom center of the mounting box (1), characterized in that, The mounting box (1) is provided with a clamping mechanism, which includes two fixing plates (5) symmetrically installed on both sides of the mounting box (1) against the inner wall of the mounting box (1). A sliding plate (6) against the inner wall of the mounting box (1) is slidably connected above the fixing plate (5). A sliding column (7) extending vertically through to the bottom of the fixing plate (5) is fixedly installed on the sliding plate (6). A first rotating rod (9) is hinged to the outer arc wall of the sliding column (7) near the center of the mounting box (1). The upper surface of the fixing plate (5) is fixedly installed with... There is a mounting base (8), the top end of which is rotatably connected to the first rotating rod (9). The end of the first rotating rod (9) away from the sliding column (7) is rotatably connected to the second rotating rod (11). The upper surface of the fixing plate (5) is hinged to the abutment post (10) between the mounting base (8) and the die body (4). The side of the abutment post (10) near the mounting base (8) is hinged to one end of the second rotating rod (11). An arc-shaped snap-fit ​​block (12) is installed on the top of the side of the abutment post (10) near the die body (4).

2. The multi-station quick-change fixture for die machining as described in claim 1, characterized in that: A telescopic guide post (13) is connected to the center of the lower surface of the sliding post (7). A fixed platform (16) is connected to the fixed end of the telescopic guide post (13). An installation block (15) is fixedly installed on the upper surface of the mounting box (1). The fixed platform (16) is fixedly connected to the installation block (15). A third rotating rod (17) is hinged to the lower surface of the sliding post (7). One end of the third rotating rod (17) is hinged to a moving rod (18) that is slidably connected to the upper surface of the fixed platform (16). The other end of the moving rod (18) is fixedly connected to a moving block (21). The side wall of the moving block (21) abuts against the side of the fixed platform (16) near the die body (4). A clamping plate (22) that abuts against the outer side wall of the die body (4) is fixedly installed on the side of the moving block (21) away from the moving rod (18).

3. The multi-station quick-change fixture for die machining as described in claim 2, characterized in that: The upper surface of the fixed platform (16) is provided with a groove (20), and a slider (19) matching the groove (20) is slidably connected in the groove (20). The slider (19) is sleeved on the outer wall of the moving rod (18).

4. The multi-station quick-change fixture for die machining as described in claim 3, characterized in that: The telescopic guide post (13) is fitted with a first spring (14), and the upper and lower ends of the first spring (14) are fixedly connected to the bottom end of the sliding post (7) and the upper surface of the fixed platform (16), respectively.

5. The multi-station quick-change fixture for die machining as described in claim 4, characterized in that: A second spring (23) is fixedly connected to the side of the mounting block (15) near the moving block (21), and the other end of the second spring (23) is fixedly connected to the moving block (21).

6. The multi-station quick-change fixture for die machining as described in claim 5, characterized in that: Two connecting rods (25) are connected to the opposite ends of the two sliding plates (6). A threaded rod (24) is threaded to the center of the connecting rod (25). A vertical rod (26) is fixedly connected to the bottom of the threaded rod (24) on the horizontal surface of the fixed plate (5). The bottom of the vertical rod (26) is rotatably connected to the upper surface of the mounting plate (3). A sprocket (27) is sleeved on the outer arc wall of the two vertical rods (26) below the mounting box (1). A chain (31) is provided between the two sprockets (27) and they are connected by transmission through the chain (31).

7. A multi-station quick-change fixture for die machining as described in claim 6, characterized in that: A motor (30) is fixedly mounted on the upper surface of the mounting plate (3). The drive shaft of the motor (30) is connected to a drive bevel gear (29). The drive bevel gear (29) is meshed with a driven bevel gear (28). The driven bevel gear (28) is fixedly connected to the vertical rod (26).

8. A multi-station quick-change fixture for die machining as described in claim 7, characterized in that: The arc-shaped snap-fit ​​block (12) is fastened to the edge of the die body (4), and a gasket is installed on the side of the clamping plate (22) near the die body (4).

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