Air cylinder with enclasping device

Abstract

The utility model belongs to the technical field of air cylinders, in particular to an air cylinder with a clasping device, which comprises an air cylinder barrel and the clasping device, the clasping device comprises a locking cover and a locking cylinder barrel, a mounting groove is arranged at one end in the locking cylinder barrel, a first clamping block and a second clamping block are oppositely and fixedly assembled in the mounting groove, and second through holes are respectively arranged on the first clamping block and the second clamping block. The piston rod slidably penetrates through the second through hole, two sets of assembling grooves are formed in the opposite faces of the first clamping block and the second clamping block correspondingly, a first spring and a second spring are fixedly arranged in the oppositely-formed assembling grooves in the first clamping block and the second clamping block correspondingly, and one end of the first clamping block and one end of the second clamping block are each of an arc spherical structure. A locking piston is arranged in the locking cover in a sliding mode, an inverted conical groove is formed in the side, close to the arc spherical structure, of the locking piston, through cooperation of the holding device, the structure is simpler, work can be achieved without extra energy support, the production cost is reduced, and meanwhile the practicability of equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of cylinders, in particular to a cylinder with a clamping device. Background Art

[0002] The cylinder is a commonly used actuator in industrial automation. It can convert the pressure energy of compressed air into mechanical energy, and drive the external mechanism to complete various linear motions or swings by guiding the piston to perform linear reciprocating motion in the cylinder. With the continuous improvement of the level of industrial automation, the application scope of cylinders with various specifications and functions is becoming more and more extensive. Among them is a cylinder with a clamping device.

[0003] The existing cylinder with a clamping device is composed of the following parts: a cylinder barrel, an end cover, a piston, a piston rod, a clamping device, etc. The working principle is that the clamping device fixes the piston rod when the piston rod stops, keeping the position of the piston rod unchanged.

[0004] The cylinder with a clamping device in the existing technology has the following disadvantages: the structure is too complicated, the reliability is reduced and the production cost is increased, and some clamping devices require additional energy support to work. At the same time, the positioning and fixing state of the piston rod is unstable and prone to displacement, which reduces the practicality. Therefore, a cylinder with a clamping device is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the shortcomings of the existing cylinders with clamping devices, solve the problems of overly complex structure, reduced reliability and increased production costs, and some clamping devices require additional energy support to work, while the piston rod positioning and fixing state is unstable and prone to deviation, which reduces practicality, a cylinder with a clamping device is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is: the utility model describes a cylinder with a clamping device, comprising a cylinder barrel, a piston rod movably inserted into one end of the cylinder barrel, a mounting seat is arranged on the side close to the piston rod, a clamping device is fixedly arranged in the mounting seat, the piston rod slides through the clamping device, and a first clamping block and a second clamping block which can be relatively fitted and opened are arranged in the clamping device; a second through hole is provided on the first clamping block and the second clamping block, and the piston rod passes through the second through hole and cooperates with the inner wall of the second through hole; when the first clamping block and the second clamping block are fitted with each other, the second through hole is separated from the piston rod, which is an unlocked state, and when the first clamping block and the second clamping block are opened, the second through hole abuts against the piston rod, which is a locked state.

[0007] Preferably, two groups of assembly grooves are provided on the opposite surfaces of the first clamp block and the second clamp block, and the first spring and the second spring are fixedly provided in the assembly grooves opposite to each other on the first clamp block and the second clamp block, the first spring and the second spring cooperate to open the first clamp block and the second clamp block to reach a locked state, one end of the first clamp block and the second clamp block is an arc spherical structure, a locking piston is slidably provided in the locking cover, and an inverted cone groove is provided on the side of the locking piston close to the arc spherical structure, the inverted cone groove and the arc spherical structure are abutted against each other to make the first clamp block and the second clamp block fit each other to reach an unlocked state.

[0008] Preferably, the clamping device includes a locking cover and a locking cylinder, the locking cylinder is provided with a first through hole, the piston rod movably passes through the first through hole, one end of the locking cover is fixedly provided with a pipe, the pipe is equipped with a plug, and an installation groove is provided at one end of the locking cylinder, and a first clamp block and a second clamp block are fixedly installed in opposition in the installation groove.

[0009] Preferably, the locking cylinder is provided with an auxiliary clamping mechanism, the auxiliary clamping mechanism includes a movable rod slidingly passing through the locking cylinder, the movable rod is fixedly provided with a mounting block, a third spring is fixedly provided between the mounting block and the locking cylinder, a moving block is movably provided on the locking cylinder, one side of the moving block is inclined slope-shaped, an arc block is fixedly provided on one side of the moving block, a first guide groove is provided on the locking cylinder, the bottom ends of the moving block and the arc block are fixedly provided with guide blocks, the guide block is slidably inserted into the first guide groove, a second guide groove is provided on the inclined slope-shaped end surface of one side of the moving block, a guide rod is fixedly provided at one end of the movable rod, the guide rod is slidably inserted into the second guide groove, and a rubber pad is fixedly provided on one side of the arc block.

[0010] Preferably, a sealing groove is provided on the circumferential surface of the lock piston, and a Y-shaped sealing ring is fixedly arranged in the sealing groove.

[0011] Preferably, a spring seat is fixedly provided on the inner wall of the locking cylinder, and a fourth spring is fixedly provided between the spring seat and the locking piston.

[0012] Beneficial effects of the utility model:

[0013] The utility model provides a cylinder with a clamping device. When an emergency situation of power failure and gas failure occurs, since there is no gas pressure to push the lock piston to reset, the first clamp block and the second clamp block expand outwards under the elastic potential energy of the first spring and the second spring, and the two form an angle, and at the same time, the second through holes on the first clamp block and the second clamp block and the central axis of the piston rod are no longer consistent, which is the locking state of the piston rod to maintain its original stop position. After power is turned on and gas is ventilated, the piston rod can be unlocked and move normally. Through the cooperation of the above-mentioned clamping device, the structure is simpler and can work without additional energy support, and the practicality of the equipment is improved while reducing the production cost;

[0014] When the clamping device positions the piston rod, the clamping device links with the auxiliary clamping mechanism to further position and fix the piston rod, thereby improving the reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional picture of the whole;

[0017] Figure 2 is a structural cross-sectional view of the clamping device of the first embodiment in an unlocked state;

[0018] Figure 3 is a structural cross-sectional view of the clamping device of the second embodiment in an unlocked state;

[0019] Figure 4 is a structural cross-sectional view of the clamping device of the second embodiment in a locked state;

[0020] Figure 5 yes Figure 3 A magnified view of the auxiliary clamping mechanism at center A;

[0021] Figure 6 This is a disassembled view of the locking cylinder and the first clamping block;

[0022] Legend:

[0023] 1. Cylinder barrel; 2. Front end cover; 3. Rear end cover; 4. Piston rod; 5. Mounting seat; 6. Clamping device; 61. Locking cover; 62. Locking cylinder barrel; 6201. First through hole; 63. Pipeline; 64. Plug; 7. Mounting groove; 8. First clamping block; 9. Second clamping block; 10. Second through hole; 11. Assembly groove; 12. First spring; 13. Second spring; 14. Arc spherical structure; 15. Lock piston; 16. Inverted cone groove; 17. Sealing groove; 18. Y-type sealing ring; 19. Spring seat; 20. Fourth spring; 21. Movable rod; 22. Mounting block; 23. Third spring; 24. Moving block; 25. Arc block; 26. First guide groove; 27. Guide block; 28. Second guide groove; 29. ​​Guide rod; 30. Rubber pad. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific examples are given below.

[0026] Embodiment 1:

[0027] See also Figure 1 , Figure 2 , Figure 6 The utility model discloses a cylinder with a clamping device, comprising a cylinder barrel 1, wherein the two ends of the cylinder barrel 1 are respectively equipped with a front end cover 2 and a rear end cover 3, a piston rod 4 is movably inserted into one end of the cylinder barrel 1, a mounting seat 5 is fixedly provided on one side of the front end cover 2, the piston rod 4 slides through the mounting seat 5, a clamping device 6 is fixedly provided in the mounting seat 5, the clamping device 6 comprises a locking cover 61 and a locking cylinder barrel 62, a first through hole 6201 is provided on the locking cylinder barrel 62, the piston rod 4 movably passes through the first through hole 6201, a pipe 63 is fixedly provided at one end of the locking cover 61, and a plug 64 is provided on the pipe 63;

[0028] The locking cylinder 62 has a mounting groove 7 at one end, and a first clamp 8 and a second clamp 9 are fixedly mounted opposite to each other in the mounting groove 7, and a second through hole 10 is formed on each of the first clamp 8 and the second clamp 9, and the piston rod 4 slides through the second through hole 10, and two groups of mounting grooves 11 are formed on the opposite surfaces of the first clamp 8 and the second clamp 9, and a first spring 12 and a second spring 13 are fixedly mounted in the mounting grooves 11 opposite to each other on the first clamp 8 and the second clamp 9, and one end of the first clamp 8 and the second clamp 9 is an arc spherical shape. Structure 14, a lock piston 15 is slidably arranged in the locking cover 61, a side of the lock piston 15 close to the arc spherical structure 14 is provided with an inverted cone groove 16, a sealing groove 17 is provided on the circumferential surface of the lock piston 15, a Y-shaped sealing ring 18 is fixedly arranged in the sealing groove 17, a spring seat 19 is fixedly arranged on the inner wall of the locking cylinder 62, and a fourth spring 20 is fixedly arranged between the spring seat 19 and the lock piston 15. When working, when the cylinder works normally, the pipeline 63 is connected to the external gas source at the same time, and the gas pressure pushes the lock piston 15 toward the arc spherical structure 14. The inverted cone groove 16 squeezes the arc spherical structure 14, so that the first clamping block 8 and the second clamping block 9 fit each other and maintain a parallel and opposing state. At this time, the second through holes 10 on the first clamping block 8 and the second clamping block 9 are consistent with the central axis of the piston rod 4. This is the unlocked state of the piston rod 4 and can perform telescopic linear motion normally. When the power and gas emergency occurs, there is no gas pressure to push the lock piston 15 to reset, and the fourth spring 20 assists in pushing the lock piston 15 to move in the direction of the pipeline 63. At the same time, the inverted cone groove 16 no longer squeezes the arc spherical structure 14. The structure 14 is extruded, and the first clamp block 8 and the second clamp block 9 expand outwardly under the elastic potential energy of the first spring 12 and the second spring 13, and the two form an angle, and at the same time, the second through hole 10 on the first clamp block 8 and the second clamp block 9 and the central axis of the piston rod 4 are no longer consistent. This is the locking state of the piston rod 4 to maintain its original stop position. After power is turned on and ventilation is provided, the piston rod 4 can be unlocked and move normally. Through the cooperation of the above-mentioned clamping device 6, the structure is simpler and can work without additional energy support, and the practicability of the equipment is improved while reducing production costs.

[0029] Furthermore, in order to maintain stable clamping, an auxiliary clamping mechanism is further provided on the locking cylinder 62 on the basis of the above-mentioned embodiment 1, forming embodiment 2:

[0030] See also Figure 1 , Figure 3-6The auxiliary clamping mechanism includes a movable rod 21 that slides through the locking cylinder 62, a mounting block 22 is fixedly arranged on the movable rod 21, a third spring 23 is fixedly arranged between the mounting block 22 and the locking cylinder 62, a moving block 24 is movably arranged on the locking cylinder 62, one side of the moving block 24 is inclined, an arc block 25 is fixedly arranged on one side of the moving block 24, a first guide groove 26 is provided on the locking cylinder 62, a guide block 27 is fixedly arranged at the bottom ends of the moving block 24 and the arc block 25, the guide block 27 is slidably inserted into the first guide groove 26, a second guide groove 28 is provided on the inclined slope end surface of one side of the moving block 24, and one end of the movable rod 21 is fixedly provided with a A guide rod 29 is provided, and the guide rod 29 is slidably inserted into the second guide groove 28. A rubber pad 30 is fixedly provided on one side of the arc block 25. During operation, in order to make the piston rod 4 in a more stable fixed state when locking, when the clamping device 6 positions the piston rod 4, the first clamping block 8 and the second clamping block 9 respectively squeeze the movable rod 21, and at the same time the third spring 23 is compressed, and the movable rod 21 pushes the guide rod 29 to move, so that the movable block 24 moves toward the direction of the piston rod 4, and the movable block 24 drives the arc block 25 and the rubber pad 30 to move. The rubber pad 30 fits tightly on the surface of the piston rod 4, further positions and fixes the piston rod 4, and can work in conjunction with the clamping device 6 without external energy support, thereby improving the reliability of the equipment.

[0031] Working principle: When the cylinder is working normally, the pipeline 63 is connected to the external gas source at the same time, and the gas pressure pushes the lock piston 15 to move in the direction of the arc spherical structure 14, and the inverted cone groove 16 squeezes the arc spherical structure 14, so that the first clamp block 8 and the second clamp block 9 fit each other and maintain a parallel opposing state, and at this time, the second through hole 10 on the first clamp block 8 and the second clamp block 9 is consistent with the central axis of the piston rod 4, which is the unlocked state of the piston rod 4 and can perform normal telescopic linear motion. When the power and gas emergency occurs, there is no gas pressure to push the lock piston 15 to reset, and the fourth spring 20 assists in pushing the lock piston 15 to move in the direction of the pipeline 63, and the inverted cone groove 16 no longer squeezes the arc spherical structure 14, and the first clamp block 8 and the second clamp block 9 expand outward under the elastic potential energy of the first spring 12 and the second spring 13, and the two form an angle, and at the same time, the first clamp block 8 and the second through hole 1 on the second clamp block 9 0 and the central axis of the piston rod 4 are no longer consistent, this is the locking state of the piston rod 4 to maintain its original stop position, after power is turned on and ventilation is provided, the piston rod 4 can be unlocked and move normally, through the cooperation of the above-mentioned clamping device 6, the structure is simpler and can work without additional energy support, and the practicality of the equipment is improved while reducing the production cost; in order to make the piston rod 4 in a more stable fixed state when locked, when the clamping device 6 positions the piston rod 4, the first clamping block 8 and the second clamping block 9 respectively squeeze the movable rod 21, and at the same time the third spring 23 is compressed, the movable rod 21 pushes the guide rod 29 to move, so that the movable block 24 moves toward the piston rod 4, and the movable block 24 drives the arc block 25 and the rubber pad 30 to move, and the rubber pad 30 fits tightly on the surface of the piston rod 4, further positioning and fixing the piston rod 4, and can work in conjunction with the clamping device 6 without external energy support, thereby improving the reliability of the equipment.

[0032] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A cylinder with a clamping device, characterized in that: The invention comprises a cylinder barrel (1), a piston rod (4) is movably inserted into one end of the cylinder barrel (1), a mounting seat (5) is arranged on the side close to the piston rod (4), a clamping device (6) is fixedly arranged in the mounting seat (5), the piston rod (4) slides through the clamping device (6), and a first clamping block (8) and a second clamping block (9) which can be relatively fitted and opened are arranged in the clamping device (6); the first clamping block (8) and the second clamping block (9) are both provided with a second through hole (10), the piston rod (4) passes through the second through hole (10) and cooperates with the inner wall of the second through hole (10); when the first clamping block (8) and the second clamping block (9) are fitted with each other, the second through hole (10) and the movable When the plug rod (4) is separated, it is in an unlocked state. When the first clamping block (8) and the second clamping block (9) are opened, the second through hole (10) abuts against the piston rod (4), which is in a locked state. The clamping device (6) comprises a locking cover (61) and a locking cylinder (62). The locking cylinder (62) is provided with a first through hole (6201). The piston rod (4) movably passes through the first through hole (6201). One end of the locking cover (61) is fixedly provided with a pipe (63). The pipe (63) is equipped with a plug (64). One end of the locking cylinder (62) is provided with a mounting groove (7). The first clamping block (8) and the second clamping block (9) are fixedly equipped in the mounting groove (7) in opposition to each other.

2. A cylinder with a clamping device according to claim 1, characterized in that: Two groups of assembly grooves (11) are provided on the opposite surfaces of the first clamping block (8) and the second clamping block (9), and a first spring (12) and a second spring (13) are fixedly provided in the assembly grooves (11) provided oppositely on the first clamping block (8) and the second clamping block (9), and the first spring (12) and the second spring (13) cooperate to open the first clamping block (8) and the second clamping block (9) to achieve a locked state, one end of the first clamping block (8) and the second clamping block (9) is an arc spherical structure (14), and a locking piston (15) is slidably provided in the locking cover (61), and a side of the locking piston (15) close to the arc spherical structure (14) is provided with an inverted cone groove (16), and the inverted cone groove (16) and the arc spherical structure (14) are abutted against each other to make the first clamping block (8) and the second clamping block (9) fit each other to achieve an unlocked state.

3. The cylinder with a clamping device according to claim 1, characterized in that: The locking cylinder (62) is provided with an auxiliary clamping mechanism, which comprises a movable rod (21) slidably penetrating the locking cylinder (62), a mounting block (22) being fixedly provided on the movable rod (21), a third spring (23) being fixedly provided between the mounting block (22) and the locking cylinder (62), a moving block (24) being movably provided on the locking cylinder (62), one side of the moving block (24) being in an inclined slope shape, and an arc-shaped block (25) being fixedly provided on one side of the moving block (24), and the locking cylinder A first guide groove (26) is provided on the cylinder (62); guide blocks (27) are fixedly provided at the bottom ends of the moving block (24) and the arc block (25); the guide blocks (27) are slidably inserted into the first guide groove (26); a second guide groove (28) is provided on the inclined sloped end surface on one side of the moving block (24); a guide rod (29) is fixedly provided at one end of the movable rod (21); the guide rod (29) is slidably inserted into the second guide groove (28); and a rubber pad (30) is fixedly provided on one side of the arc block (25).

4. The cylinder with a clamping device according to claim 2, characterized in that: A sealing groove (17) is provided on the circumferential surface of the lock piston (15), and a Y-shaped sealing ring (18) is fixedly arranged in the sealing groove (17).

5. A cylinder with a clamping device according to claim 1 or 3, characterized in that: A spring seat (19) is fixedly arranged on the inner wall of the locking cylinder (62), and a fourth spring (20) is fixedly arranged between the spring seat (19) and the locking piston (15).

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