Pneumatic chuck with larger clamping range

Abstract

The utility model relates to the technical field of pneumatic chucks, in particular to a pneumatic chuck with a larger clamping range, which comprises a connecting barrel, a partition plate is fixedly mounted in the connecting barrel, a movable sealing plate is mounted in the connecting barrel, a connecting column is mounted on the top surface of the sealing plate, and the connecting column is connected with the partition plate. A butt joint block is installed at the top end of the connecting column, a rotatable connecting rod is connected to the top face of the butt joint block, and a movable moving block is installed on the top face of the connecting barrel. According to the device, the limiting frame is installed on the top face of the connecting barrel, the movable moving block is arranged in the limiting frame, and the moving block is connected with the butt joint block through the connecting rod, so that the device can clamp workpieces of different sizes, the application range of the device is widened, meanwhile, the clamping effect of the device is maintained, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic chucks, in particular to a pneumatic chuck with a larger clamping range. Background Art

[0002] In the machining industry, pneumatic chucks are an important clamping tool and are widely used in various machine tools. However, traditional pneumatic chucks have certain limitations in the clamping range and cannot meet the clamping needs of larger or special-shaped workpieces. Therefore, it is necessary to improve the traditional pneumatic chuck to increase its clamping range so as to adapt to the processing needs of more types of workpieces.

[0003] For example, the patent specification of an existing Chinese patent (publication number: CN209223220U) discloses a pneumatic chuck mechanism, including a chuck part and a clamping part, wherein the clamping part is movably arranged on the chuck part, the chuck part includes a chuck base and a chuck upper cover, the chuck base is fixedly connected to the chuck upper cover, the clamping part includes a clamping assembly and a driving assembly, the clamping assembly is movably arranged at an upper position of the chuck base, the driving assembly is movably arranged on the outer peripheral side of the clamping assembly, and the clamping assembly can convert the vertical movement of the driving assembly into its own horizontal movement to achieve the clamping and loosening of the workpiece.

[0004] However, in the implementation of relevant technologies, it was found that the pneumatic chuck mechanism of the above design has the following problems: although the device can complete the locking and clamping of the workpiece through the internal mechanical structure, the clamping range of the device is too small and can only clamp a small number of workpieces. The scope of application is too small and the practicality is not strong.

[0005] In view of this, a pneumatic chuck with a larger clamping range is provided to overcome the above-mentioned defects. Utility Model Content

[0006] The utility model aims to solve the shortcomings in the prior art and proposes a pneumatic chuck with a larger clamping range.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a pneumatic chuck with a larger clamping range, comprising a connecting barrel, a partition plate is fixedly installed inside the connecting barrel, a movable sealing plate is installed inside the connecting barrel, a connecting column is installed on the top surface of the sealing plate, a docking block is installed on the top end of the connecting column, a rotatable connecting rod is connected to the top surface of the docking block, and a movable moving block is installed on the top surface of the connecting barrel.

[0008] As a further description of the above technical solution: a receiving groove is opened inside the moving block, a card block is detachably installed in the receiving groove, a movable limiting rod is installed on the side wall of the moving block, a pulling block is fixedly connected to the top end of the limiting rod, and a reset spring is fixedly installed between the pulling block and the side wall of the moving block.

[0009] As a further description of the above technical solution: a receiving groove is opened on the outer wall of the connecting barrel, the specific number of the receiving grooves is three, the number of the connecting rods is also three, and the positions of the three connecting rods correspond one to one to the three receiving grooves.

[0010] As a further description of the above technical solution: a limit frame is fixedly installed at a position directly above the containing groove and at a position connected to the top surface of the barrel, and the moving block is movably located inside the limit frame.

[0011] As a further description of the above technical solution: first guide grooves are provided on both sides of the inner wall of the limit frame, and two first guide blocks are fixedly installed on the outer wall of the moving block, and the first guide blocks are movably located inside the first guide grooves.

[0012] As a further description of the above technical solution: a second guide groove is provided on the side wall of the accommodating groove provided inside the moving block, and a second guide block is fixedly installed on the outer wall of the clamping block, and the second guide block is movably located inside the second guide groove.

[0013] As a further description of the above technical solution: a docking groove is formed through the outer wall of the clamping block, the specific number of the docking grooves is two, and the docking grooves are adapted to the limiting rod.

[0014] As a further description of the above technical solution: the width of the three connecting rods is smaller than the width of the three accommodating grooves, and the other end of the connecting rod is rotatably connected to the bottom end of the moving block.

[0015] The utility model has the following beneficial effects:

[0016] The utility model designs a pneumatic chuck with a larger clamping range. A limit frame is installed on the top surface of a connecting barrel, a movable moving block is arranged in the limit frame, and the moving block is connected to a docking block through a connecting rod, so that the device can clamp workpieces of different sizes, thereby increasing the application range of the device, while maintaining the clamping effect of the device and increasing the practicability of the device.

[0017] The utility model designs a pneumatic chuck with a larger clamping range, by installing a movable limit rod on the side wall of a moving block, installing a pull block on the top of the limit rod, and fixing a reset spring of a connecting machine between the pull block and the side wall of the moving block, and finally opening two docking grooves matched with the limit rod on the outer wall of the card block, so that the device can quickly replace the card block or adjust the position of the card block, which greatly increases the convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the exterior of one side of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the planar structure of the utility model viewed from above;

[0021] Figure 4 for Figure 3 Cross-sectional structure diagram at AA in the middle.

[0022] Legend:

[0023] 1. Connecting barrel; 2. Accommodating groove; 3. Partition plate; 4. Connecting column; 5. Sealing plate; 6. Air cavity; 7. Docking block; 8. Connecting rod; 9. Moving block; 10. Limiting frame; 11. First guide groove; 12. Block; 13. Pull block; 14. Limiting rod; 15. Reset spring; 16. Second guide groove; 17. Second guide block; 18. First guide block; 19. Docking groove. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] Reference Figure 1-4The utility model provides a pneumatic chuck with a larger clamping range: it includes a connecting barrel 1, a partition plate 3 is fixedly installed inside the connecting barrel 1, a movable sealing plate 5 is installed inside the connecting barrel 1, and a connecting column 4 is installed on the top surface of the sealing plate 5, characterized in that a docking block 7 is installed on the top of the connecting column 4, a rotatable connecting rod 8 is connected to the top surface of the docking block 7, a movable moving block 9 is installed on the top surface of the connecting barrel 1, and a receiving groove 2 is opened on the outer wall of the connecting barrel 1. The specific number of the receiving grooves 2 is three, and the number of the connecting rods 8 is also three. The three connecting rods 8 correspond to the positions of the three receiving grooves 2 one by one. By setting the three connecting rods 8 to correspond to the positions of the three receiving grooves 2 one by one, the connecting rod 8 can extend from the receiving groove 2 after being pushed upward, so that the movement of the connecting rod 8 will not Obstructed by the connecting barrel 1, a limit frame 10 is fixedly installed at the position of the top surface of the connecting barrel 1 just above the accommodating groove 2, and the moving block 9 is movably located inside the limit frame 10. First guide grooves 11 are provided on both sides of the inner wall of the limit frame 10, and two first guide blocks 18 are fixedly installed on the outer wall of the moving block 9. The first guide blocks 18 are movably located inside the first guide grooves 11. By setting the first guide blocks 18 movably located inside the first guide grooves 11, the moving block 9 is limited during the movement process and will not easily separate from the device body. The width of the three connecting rods 8 is smaller than the width of the three accommodating grooves 2, and the other end of the connecting rod 8 is rotatably connected to the bottom end of the moving block 9. By setting the width of the connecting rod 8 smaller than the width of the accommodating groove 2, the connecting rod 8 can pass through the accommodating groove 2 smoothly.

[0026] During the specific implementation, the air supply pipe is first connected to the air cavity 6, and air is supplied to the air cavity 6. When the air pressure in the air cavity 6 is too large, the sealing plate 5 will be pushed downward, and the sealing plate 5 is connected to the connecting column 4, and the connecting column 4 is connected to the bottom end of the docking block 7. Therefore, the docking block 7 will move synchronously with the sealing plate 5. After the docking block 7 moves, the connecting rod 8 rotatably connected to the top of the docking block 7 is pulled downward, and the other end of the connecting rod 8 is rotatably connected to the bottom end of the moving block 9, and the moving block 9 is limited by the first guide groove 11 opened in the limit frame 10. Therefore, the moving block 9 can only move toward the middle position of the top surface of the connecting barrel 1. In this way, after the air supply pipe supplies air inward, the three moving blocks 9 will simultaneously move toward the middle position of the top surface of the connecting barrel 1, thereby fixing the workpiece.

[0027] When it is necessary to clamp a larger workpiece, the gas in the air cavity 6 is first extracted through the air pipe, and then one of the moving blocks 9 is pulled toward the edge of the limit frame 10. In the process of pulling the moving block 9, the docking block 7 will be driven up, and when the docking block 7 rises, the other two moving blocks 9 will also move outward synchronously. At this time, the position between the three moving blocks 9 will be expanded, and then the larger workpiece will be placed in the middle of the three moving blocks 9. At this time, air is supplied to the air cavity 6 again, and the larger workpiece can be clamped.

[0028] By installing a limit frame 10 on the top surface of the connecting barrel 1, setting a movable moving block 9 in the limit frame 10, and setting the moving block 9 to be connected to the docking block 7 through a connecting rod 8, the device can clamp workpieces of different sizes, thereby increasing the application range of the device, while maintaining the clamping effect of the device and increasing the practicality of the device.

[0029] In addition, an electric telescopic rod can be connected to the bottom end of the sealing plate 5 so that the device can automatically control the expansion range, or a spring can be connected between the rear end of the inner wall of the limit frame 10 and the rear end of the moving block 9 to achieve automatic range expansion.

[0030] Embodiment 2

[0031] Reference Figure 1-4 The utility model provides a pneumatic chuck with a larger clamping range: a receiving groove 2 is opened inside the moving block 9, and a card block 12 is detachably installed in the receiving groove 2. A movable limiting rod 14 is installed on the side wall of the moving block 9, and a pull block 13 is fixedly connected to the top of the limiting rod 14. A reset spring 15 is fixedly installed between the pull block 13 and the side wall of the moving block 9. A second guide groove 16 is opened on the side wall of the receiving groove 2 opened inside the moving block 9, and a second guide block 17 is fixedly installed on the outer wall of the card block 12. The second guide block 17 is movably located inside the second guide groove 16. By setting the second guide block 17 movably located inside the second guide groove 16, the card block 12 will not easily escape from the receiving groove 2. A docking groove 19 is opened through the outer wall of the card block 12, and the specific number of the docking grooves 19 is two, and the docking groove 19 is adapted to the limiting rod 14.

[0032] During the specific implementation, the user first pulls the two pull blocks 13. After the pull blocks 13 are pulled, the lateral limitation of the card block 12 disappears, and then the card block 12 can be directly moved toward the middle position of the top surface of the connecting barrel 1. The card block 12 can be directly pulled out of the accommodating groove 2. At this time, the card block 12 can be replaced or the position can be adjusted.

[0033] When replacing, just take out the entire card block 12, then take out a card block 12 of other shapes and insert it into the accommodating groove 2, and then release the two pull blocks 13. After the pull block 13 is released, because a reset spring 15 is fixedly connected between the pull block 13 and the outer wall of the moving block 9, the pull block 13 will reset with the limit rod 14, and after the limit rod 14 is reset, it will be reinserted into the docking groove 19 to fix the card block 12.

[0034] When the position of the block 12 needs to be adjusted, the block 12 can be pulled out a little, and then the pull block 13 can be loosened again. At this time, the front limit rod 14 will be inserted into the rear docking groove 19 on the side wall of the block 12. At this time, the front end of the block 12 is closer to the middle position of the top surface of the connecting barrel 1 than in the initial state. This setting allows the device to fix smaller workpieces.

[0035] By installing a movable limit rod 14 on the side wall of the moving block 9, installing a pull block 13 at the top of the limit rod 14, and fixing a reset spring 15 of the limit machine between the pull block 13 and the side wall of the moving block 9, and finally opening two docking grooves 19 compatible with the limit rod 14 on the outer wall of the card block 12, the device can quickly replace the card block 12 or adjust the position of the card block 12, which greatly increases the convenience of using the device.

[0036] Working principle:

[0037] When using the utility model, first connect the air supply pipe to the air cavity 6, and supply air to the air cavity 6. When the air pressure in the air cavity 6 is too large, the sealing plate 5 will be pushed downward, and the sealing plate 5 is connected to the connecting column 4, and the connecting column 4 is connected to the bottom end of the docking block 7. Therefore, the docking block 7 will move synchronously with the sealing plate 5. After the docking block 7 moves, the connecting rod 8 rotatably connected to the top end of the docking block 7 is pulled downward, and the other end of the connecting rod 8 is rotatably connected to the bottom end of the moving block 9, and the moving block 9 is limited by the first guide groove 11 opened in the limit frame 10. Therefore, the moving block 9 can only move toward the middle position of the top surface of the connecting barrel 1. In this way, after the air supply pipe supplies air inward, the three moving blocks 9 will simultaneously move toward the middle position of the top surface of the connecting barrel 1, thereby fixing the workpiece.

[0038] When it is necessary to clamp a larger workpiece, the gas in the air cavity 6 is first extracted through the air pipe, and then one of the moving blocks 9 is pulled toward the edge of the limit frame 10. In the process of pulling the moving block 9, the docking block 7 will be driven up, and when the docking block 7 rises, the other two moving blocks 9 will also move outward synchronously. At this time, the position between the three moving blocks 9 will be expanded, and then the larger workpiece will be placed in the middle of the three moving blocks 9. At this time, air is supplied to the air cavity 6 again, and the larger workpiece can be clamped.

[0039] By installing a limit frame 10 on the top surface of the connecting barrel 1, setting a movable moving block 9 in the limit frame 10, and setting the moving block 9 to be connected to the docking block 7 through a connecting rod 8, the device can clamp workpieces of different sizes, thereby increasing the application range of the device, while maintaining the clamping effect of the device and increasing the practicality of the device.

[0040] Then the user can pull the two pull blocks 13 first. After the pull blocks 13 are pulled, the lateral limitation of the block 12 disappears, and then the block 12 can be moved directly to the middle position of the top surface of the connecting barrel 1. The block 12 can be directly pulled out of the receiving groove 2. At this time, the block 12 can be replaced or the position can be adjusted.

[0041] When replacing, just take out the entire card block 12, then take out a card block 12 of other shapes and insert it into the accommodating groove 2, and then release the two pull blocks 13. After the pull block 13 is released, because a reset spring 15 is fixedly connected between the pull block 13 and the outer wall of the moving block 9, the pull block 13 will reset with the limit rod 14, and after the limit rod 14 is reset, it will be reinserted into the docking groove 19 to fix the card block 12.

[0042] When the position of the block 12 needs to be adjusted, the block 12 can be pulled out a little, and then the pull block 13 can be loosened again. At this time, the front limit rod 14 will be inserted into the rear docking groove 19 on the side wall of the block 12. At this time, the front end of the block 12 is closer to the middle position of the top surface of the connecting barrel 1 than in the initial state. This setting allows the device to fix smaller workpieces.

[0043] By installing a movable limit rod 14 on the side wall of the moving block 9, installing a pull block 13 at the top of the limit rod 14, and fixing a reset spring 15 of the limit machine between the pull block 13 and the side wall of the moving block 9, and finally opening two docking grooves 19 compatible with the limit rod 14 on the outer wall of the card block 12, the device can quickly replace the card block 12 or adjust the position of the card block 12, which greatly increases the convenience of using the device.

[0044] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pneumatic chuck with a larger clamping range, comprising a connecting barrel (1), a partition plate (3) fixedly installed inside the connecting barrel (1), a movable sealing plate (5) installed inside the connecting barrel (1), a connecting column (4) installed on the top surface of the sealing plate (5), characterized in that: A docking block (7) is installed on the top of the connecting column (4), a rotatable connecting rod (8) is connected to the top surface of the docking block (7), and a movable moving block (9) is installed on the top surface of the connecting barrel (1).

2. A pneumatic chuck with a larger clamping range according to claim 1, characterized in that: The movable block (9) is provided with a receiving groove (2) inside which a clamping block (12) is detachably installed. A movable limiting rod (14) is installed on the side wall of the movable block (9). A pulling block (13) is fixedly connected to the top end of the limiting rod (14). A return spring (15) is fixedly installed between the pulling block (13) and the side wall of the movable block (9).

3. A pneumatic chuck with a larger clamping range according to claim 1, characterized in that: The outer wall of the connecting barrel (1) is provided with accommodating grooves (2), the specific number of the accommodating grooves (2) is three, the number of the connecting rods (8) is also three, and the positions of the three connecting rods (8) correspond one to one to the positions of the three accommodating grooves (2).

4. A pneumatic chuck with a larger clamping range according to claim 3, characterized in that: A limit frame (10) is fixedly installed just above the containing groove (2) at a position on the top surface of the connecting barrel (1), and the moving block (9) is movably located inside the limit frame (10).

5. A pneumatic chuck with a larger clamping range according to claim 4, characterized in that: First guide grooves (11) are provided on both sides of the inner wall of the limit frame (10), and two first guide blocks (18) are fixedly mounted on the outer wall of the moving block (9), wherein the first guide blocks (18) are movably located inside the first guide grooves (11).

6. A pneumatic chuck with a larger clamping range according to claim 2, characterized in that: A second guide groove (16) is provided on the side wall of the receiving groove (2) provided inside the moving block (9), and a second guide block (17) is fixedly mounted on the outer wall of the clamping block (12), and the second guide block (17) is movably located inside the second guide groove (16).

7. A pneumatic chuck with a larger clamping range according to claim 6, characterized in that: A docking groove (19) is formed through the outer wall of the clamping block (12). The specific number of the docking grooves (19) is two, and the docking grooves (19) are adapted to the limiting rod (14).

8. A pneumatic chuck with a larger clamping range according to claim 3, characterized in that: The width of the three connecting rods (8) is smaller than the width of the three containing grooves (2), and the other end of the connecting rod (8) is rotatably connected to the bottom end of the moving block (9).

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