Automatic plate pressing pneumatic clamp

Abstract

The utility model discloses an automatic plate pressing pneumatic clamp, which relates to the technical field of pneumatic clamps and comprises a bottom plate and a mounting plate, a clamp box is arranged at the top of the bottom plate, a rotating column is fixedly connected to the top wall of the clamp box, a column body at the top end of the rotating column is rotatably connected with a plate body of the mounting plate, and a rotating rod is rotatably mounted on the plate body of the mounting plate. A second gear is fixed to a rod body at the bottom end of the rotating rod, a first gear is fixed to the surface of a column body of the rotating column and meshed with the second gear, a rotating disc is fixedly installed on a rod body at the top end of the rotating rod, positioning holes are evenly formed in the circumferential side wall of the rotating disc, a vertical plate is arranged on one side of the rotating disc, and a positioning pin is installed in a plate body of the vertical plate. Under the action that the top wall of the clamp box is provided with the rotating disc and other structures, the clamp box can carry the target object pressing plate to complete angle adjustment and then position the whole, and therefore the problem that an existing pneumatic clamp cannot be positioned and kept after angle adjustment due to the fact that the existing pneumatic clamp lacks a positioning structure is solved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic clamping technology, specifically an automatic pressure plate pneumatic clamping device. Background Technology

[0002] With social development, fixtures are an indispensable component in machining. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent and environmental protection, fixture technology is developing towards high precision, high efficiency, modularity, combination, versatility and economy. At the same time, with the development of the processing and manufacturing industry, the result of high-speed cutting has greatly shortened machining time and increased labor productivity. It is necessary to promote pneumatic fixtures, as they are easy to operate and can greatly reduce labor intensity.

[0003] Chinese Patent Publication No. CN219485433U discloses a pneumatic clamp for easy assembly, comprising a housing with an air inlet on its surface and an air inlet pipe mounted thereon. Two first connecting rods are rotatably mounted on one end of the housing, each connected to a clamping plate. Each first connecting rod has a connecting mechanism for connecting the clamping plate. A rotating mechanism for rotating the two first connecting rods is located inside the housing. A fixing seat is fixed at the other end of the housing, and a mounting sleeve is fitted onto the surface of the fixing seat, rotating on the surface of the fixing seat. This invention, through the design of the connecting mechanism, makes the clamping effect more stable during use. Furthermore, the mounting sleeve makes assembly easier, avoiding complex structures that could lead to inconvenience.

[0004] However, the above-mentioned patents still have certain shortcomings in actual use. Generally, after clamping the target object, it is often necessary to adjust the angle of the clamped target object according to the actual needs of the actual use. Although the pneumatic clamp disclosed in the above-mentioned patents allows the mounting sleeve to be rotated and mounted on the surface of the fixed base, so that the pneumatic clamp can be rotated and adjusted, it lacks a positioning structure after rotation. It cannot be positioned after the required angle is reached, which can easily cause the angle adjustment to fail. Therefore, it has certain limitations. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic pressure plate pneumatic clamp to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic pressure plate pneumatic clamp, comprising a base plate and a mounting plate fixed to the top wall of the base plate. A clamp box is provided on the top of the base plate, and a rotating column is fixedly connected to the top wall of the clamp box. The top end of the rotating column is rotatably connected to the plate body of the mounting plate. A rotating rod is rotatably mounted on the plate body of the mounting plate. A second gear is fixed to the bottom end of the rotating rod. A first gear is fixed to the surface of the rotating column. The first gear meshes with the second gear. A turntable is fixedly mounted on the top end of the rotating rod. Positioning holes are evenly provided on the circumferential side wall of the turntable. A vertical plate fixed to the top wall of the mounting plate is provided on one side of the turntable. A positioning pin adapted to the positioning hole is movably installed in the plate body of the vertical plate.

[0007] Preferably, the upper and lower sides of the fixture box are respectively provided with a circular cavity and a rectangular cavity. A piston plate is provided in the circular cavity, and a rack is fixedly installed on the bottom wall of the piston plate. The rack moves through the cavity wall of the circular cavity and extends into the cavity of the rectangular cavity.

[0008] Preferably, a transmission rod is rotatably installed between the two side walls of the rectangular cavity. A transmission gear is fixed on the surface of the middle part of the transmission rod, and the transmission gear meshes with the rack. A bidirectional threaded rod is provided on one side of the transmission rod, which is rotatably connected between the two side walls of the rectangular cavity. Moving blocks are screwed to the surfaces of both ends of the bidirectional threaded rod. A guide groove communicating with the rectangular cavity is opened on the bottom wall of the fixture box. A clamping rod adapted to the cavity of the guide groove is fixedly installed on the bottom wall of the moving block. The rod of the clamping rod passes through the cavity of the guide groove, and a clamping plate is fixedly installed at the bottom end of the rod.

[0009] Preferably, a fourth gear and a third gear are fixedly installed on one end of the bidirectional threaded rod and one end of the transmission rod, respectively, and the fourth gear and the third gear mesh with each other.

[0010] Preferably, a handle is fixedly installed on the top wall of the turntable, and an air guide hose communicating with the circular cavity is provided on the top wall of the clamp box.

[0011] Preferably, the piston plate has a groove on its circumferential sidewall, and a sealing ring is installed in the groove cavity.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model, by setting a rotating column on the top wall of the fixture box, and under the action of the turntable, positioning hole, positioning pin, rotating rod, first gear and second gear, allows the fixture box to carry the target object pressure plate to complete the angle adjustment and then position the whole, thereby avoiding the problem that existing pneumatic fixtures cannot maintain the position after angle adjustment due to the lack of a positioning structure.

[0014] 2. This utility model, through the action of structures such as circular cavity, rectangular cavity, bidirectional threaded rod, clamping rod, and clamping plate, can cause the piston plate to drive the two clamping plates to move closer to each other, thereby pneumatically clamping the target object pressure plate, which is very convenient. Attached Figure Description

[0015] Figure 1 This is a first-view structural schematic diagram of an automatic pressure plate pneumatic clamp according to the present invention;

[0016] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A;

[0017] Figure 3 This is a second-view cross-sectional structural diagram of an automatic pressure plate pneumatic clamp according to the present invention;

[0018] Figure 4 This utility model Figure 3 Enlarged structural diagram at point B;

[0019] Figure 5 This is a schematic diagram of the piston plate structure of an automatic pressure plate pneumatic clamp according to the present invention.

[0020] In the diagram: 1. Base plate; 2. Mounting plate; 3. Fixture box; 4. Air guide hose; 5. Clamping rod; 6. Clamping plate; 7. Rotating column; 8. First gear; 9. Second gear; 10. Rotating rod; 11. Turntable; 12. Positioning hole; 13. Handle; 14. Vertical plate; 15. Positioning pin; 16. Guide groove; 17. Rectangular cavity; 18. Circular cavity; 19. Piston plate; 1901. Groove; 1902. Sealing ring; 20. Rack; 21. Transmission rod; 22. Transmission gear; 23. Third gear; 24. Fourth gear; 25. Bidirectional threaded rod; 26. Moving block. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5This utility model provides a technical solution: an automatic pressure plate pneumatic clamp, including a base plate 1 and a mounting plate 2 welded to the top wall of the base plate 1. The mounting plate 2 has an inverted L-shaped cross-section. A clamp box 3 is set on the top of the base plate 1. The bottom end of the rotating column 7 is welded to the top wall of the clamp box 3. The top end of the rotating column 7 is rotatably connected to the plate of the mounting plate 2 via a bearing. The middle part of the rotating rod 10 passes through the plate of the mounting plate 2 via a bearing. A second gear 9 is welded to the bottom end of the rotating rod 10. A first gear 8 is welded to the surface of the rotating column 7. The first gear 8 and the second gear 9 mesh with each other. The purpose is to enable the rotating rod 10 to drive the rotating column 7 to rotate together during rotation through the meshing of the first gear 8 and the second gear 9, thereby causing the clamp box 3 to rotate. A turntable 11 is welded to the top of the rotating rod 10. Several positioning holes 12 are evenly opened on the circumferential side wall of the turntable 11. A vertical plate 14 is welded to the top wall of the mounting plate 2 on the rear side of the turntable 11. Positioning pins 15 that are adapted to the positioning holes 12 are movably installed in the plate body of the vertical plate 14. The purpose is to allow the positioning pins 15 to be inserted into the positioning holes 12, thereby positioning the turntable 11, and then positioning the fixture box 3 after rotating and adjusting the angle.

[0023] The clamp box 3 has a circular cavity 18 and a rectangular cavity 17 respectively on its upper and lower sides. A piston plate 19 is disposed in the circular cavity 18. A rack 20 is welded to the bottom wall of the piston plate 19. The rack 20 moves through the wall of the circular cavity 18 and extends into the rectangular cavity 17, so that the piston plate 19 can drive the rack 20 to move up and down. A transmission rod 21 is rotatably installed between the left and right side walls of the rectangular cavity 17. The left and right ends of the transmission rod 21 are respectively mounted on the left and right side walls of the inner cavity of the rectangular cavity 17 via bearings. A transmission gear 22 is welded to the surface of the middle part of the transmission rod 21. The transmission gear 22 meshes with the rack 20, so that the rack 20 can drive the transmission rod 21 to rotate during the lifting and lowering process. A bidirectional threaded rod 25 is provided on the front side of the transmission rod 21 and is rotatably connected between the left and right side walls of the rectangular cavity 17 via a bearing. Moving blocks 26 are screwed onto the surfaces of the left and right ends of the bidirectional threaded rod 25. A guide groove 16 communicating with the rectangular cavity 17 is provided on the bottom wall of the clamp box 3. A clamping rod 5 adapted to the cavity of the guide groove 16 is welded to the bottom wall of the moving block 26. The rod of the clamping rod 5 passes through the cavity of the guide groove 16, and a clamping plate 6 is welded to the bottom end of the rod of the clamping rod 5. The purpose is to enable the moving blocks 26 on the left and right sides to move closer or further apart from each other via the clamping rod 5 under the limiting guidance of the guide groove 16 when the bidirectional threaded rod 25 rotates, thereby achieving the clamping of the target object. The right end of the bidirectional threaded rod 25 and the right end of the transmission rod 21 are respectively welded with a fourth gear 24 and a third gear 23, and the fourth gear 24 and the third gear 23 mesh with each other. The purpose is to make the bidirectional threaded rod 25 rotate together when the transmission rod 21 rotates. A handle 13 is welded to the top wall of the turntable 11 to facilitate the rotation of the turntable 11. The top wall of the fixture box 3 is provided with a gas guide hose 4 that communicates with the cavity of the circular cavity 18. The purpose is to fill the circular cavity 18 with gas, thereby pushing the piston plate 19 downward. A groove 1901 is opened on the circumferential side wall of the piston plate 19, and a sealing ring 1902 is installed in the groove 1901 to prevent air leakage.

[0024] When the target object needs to be pneumatically clamped, the pneumatic clamp first fills the top cavity of the circular cavity 18 with gas through the air guide hose 4. As the gas is continuously filled, the piston plate 19 moves down in the circular cavity 18. During the downward movement, it drives the rack 20 to move down. During the downward movement of the rack 20, it meshes with the transmission gear 22 and drives the transmission rod 21 to rotate together. Then, under the meshing transmission of the third gear 23 and the fourth gear 24, it drives the bidirectional threaded rod 25 to rotate together. Under the action of the guide groove 16, the two moving blocks 26 drive the clamping plates 6 on both sides to move closer to each other through the clamping rod 5, thereby pneumatically clamping the target object pressure plate. When it is necessary to adjust the angle of the clamped object pressure plate, simply rotate the turntable 11 via the handle 13. The rotation of the turntable 11 drives the rotating rod 10 to rotate. The rotation of the rotating rod 10, through the meshing transmission of the first gear 8 and the second gear 9, drives the rotating column 7 to rotate, which in turn drives the entire clamping box 3 to rotate, thereby realizing the angle adjustment of the clamped object pressure plate. After adjusting to the required angle, the positioning pin 15 can be inserted into the positioning hole 12 to position the turntable 11, thus avoiding the problem of not being able to maintain the position after angle adjustment due to the lack of a positioning structure.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic pressure plate pneumatic clamp, comprising a base plate (1) and a mounting plate (2) fixed to the top wall of the base plate (1), characterized in that: A clamp box (3) is provided on the top of the base plate (1). A rotating column (7) is fixedly connected to the top wall of the clamp box (3). The top column of the rotating column (7) is rotatably connected to the plate of the mounting plate (2). A rotating rod (10) is rotatably installed on the plate of the mounting plate (2). A second gear (9) is fixed to the bottom end of the rotating rod (10). A first gear (8) is fixed to the surface of the rotating column (7). The first gear (8) meshes with the second gear (9). A turntable (11) is fixedly installed on the top end of the rotating rod (10). Positioning holes (12) are evenly opened on the circumferential side wall of the turntable (11). A vertical plate (14) fixed to the top wall of the mounting plate (2) is provided on one side of the turntable (11). A positioning pin (15) that matches the positioning hole (12) is movably installed in the plate of the vertical plate (14).

2. The automatic pressure plate pneumatic clamp according to claim 1, characterized in that: The clamp box (3) has a circular cavity (18) and a rectangular cavity (17) respectively in the upper and lower sides of the box. A piston plate (19) is provided in the cavity of the circular cavity (18). A rack (20) is fixedly installed on the bottom wall of the piston plate (19). The rack (20) moves through the cavity wall of the circular cavity (18) and extends into the cavity of the rectangular cavity (17).

3. The automatic pressure plate pneumatic clamp according to claim 2, characterized in that: A transmission rod (21) is rotatably installed between the two side walls of the rectangular cavity (17). A transmission gear (22) is fixed on the surface of the middle part of the transmission rod (21). The transmission gear (22) meshes with the rack (20). A bidirectional threaded rod (25) is provided on one side of the transmission rod (21) and rotatably connected between the two side walls of the rectangular cavity (17). Moving blocks (26) are screwed onto the surfaces of both ends of the bidirectional threaded rod (25). A guide groove (16) communicating with the rectangular cavity (17) is opened on the bottom wall of the clamp box (3). A clamping rod (5) adapted to the groove cavity of the guide groove (16) is fixedly installed on the bottom wall of the moving block (26). The rod of the clamping rod (5) passes through the groove cavity of the guide groove (16), and a clamping plate (6) is fixedly installed at the bottom end of the rod of the clamping rod (5).

4. The automatic pressure plate pneumatic clamp according to claim 3, characterized in that: A fourth gear (24) and a third gear (23) are fixedly installed on one end of the bidirectional threaded rod (25) and one end of the transmission rod (21), respectively, and the fourth gear (24) and the third gear (23) mesh with each other.

5. The automatic pressure plate pneumatic clamp according to claim 2, characterized in that: A handle (13) is fixedly installed on the top wall of the turntable (11), and an air guide hose (4) is provided on the top wall of the clamp box (3) to communicate with the cavity of the circular cavity (18).

6. The automatic pressure plate pneumatic clamp according to claim 2, characterized in that: The piston plate (19) has a groove (1901) on its circumferential sidewall, and a sealing ring (1902) is installed in the groove (1901).

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