Pneumatic clamping mechanism

Abstract

The utility model belongs to the technical field of pneumatic clamping, and particularly discloses a pneumatic clamping mechanism which comprises an air cylinder, a penetrating shaft is fixedly arranged on the inner side of the air cylinder in a penetrating mode, a swing arm is rotatably connected to the outer surface of the penetrating shaft, a concave clamping jaw is arranged at the end, away from the penetrating shaft, of the swing arm, and a driving shaft is fixedly connected to the output end of the air cylinder. The outer surface of the driving shaft is fixedly sleeved with a sleeve frame, a frame shaft is fixedly arranged on the inner side of the sleeve frame in a penetrating mode, the outer surface of the frame shaft is rotationally connected with a position driving plate, and a position driving shaft is fixedly arranged on the inner side of the swing arm in a penetrating mode. According to the pneumatic clamping mechanism, the outer wall is clamped through the concave clamping jaw, meanwhile, an inner wall clamping mechanism (that is, the rubber arc plate abuts against the inner wall of the pipeline) is introduced, the stability of the pipeline when the pipeline is subjected to external impact or vibration is greatly improved through the internal and external dual clamping mode, and the risk that the pipeline is loosened or falls off is effectively reduced; therefore, the safety and the reliability of the whole system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic clamping, and specifically to a pneumatic clamping and holding mechanism. Background Art

[0002] A pneumatic clamping mechanism is a device that uses the principles of aerodynamics to clamp and fix workpieces. It is mainly composed of a cylinder, a pneumatic actuator, a fixture body, and other parts. The cylinder is the power source of the pneumatic clamping mechanism, and compressed air is usually used as the power source.

[0003] Existing pneumatic clamping mechanisms generally use a cylinder as a power source to clamp the outer surface of the pipe using claws. However, when the pipe is subjected to external impact or vibration, relying solely on the outer wall clamping may not provide sufficient support for the pipe, which can easily cause the pipe to loosen or fall off, increasing the risk of accidents. Utility Model Content

[0004] In view of this, the purpose of the present invention is to solve the shortcomings of the background technology and to propose a pneumatic clamping mechanism to solve the problems existing in the prior art.

[0005] To achieve the above objectives, the utility model provides a pneumatic clamping and holding mechanism, comprising a cylinder, a through shaft fixedly penetrated on the inner side of the cylinder, a swing arm rotatably connected to the outer surface of the through shaft, a concave clamping claw provided on the end of the swing arm away from the through shaft, the output end of the cylinder is fixedly connected to a drive shaft, a sleeve frame is fixedly provided on the outer surface of the drive shaft, a frame shaft is fixedly penetrated on the inner side of the frame, a drive plate is rotatably connected to the outer surface of the frame shaft, a drive shaft is fixedly penetrated on the inner side of the swing arm, and the outer surface of the drive shaft is rotatably connected to the end of the drive plate away from the frame shaft, and an inner wall supporting mechanism is provided on the drive shaft.

[0006] Preferably, the inner wall supporting mechanism includes a connecting plate fixedly connected to the end of the drive shaft away from the cylinder, and the outer surface of the connecting plate is fixedly connected to a fixing frame. The inner wall supporting mechanism can use a rubber arc plate to support the inner wall of the pipeline, thereby cooperating with the concave clamping claw to implement a more stable clamping of the pipeline.

[0007] Preferably, a displacement rod is slidably connected to the inner side of the fixing frame, and a rubber arc plate is provided at one end of the displacement rod away from the fixing frame.

[0008] Preferably, the outer surface of the fixing bracket is rotatably connected to a rotating shaft, and a knob is provided at one end of the rotating shaft away from the fixing bracket.

[0009] Preferably, a disc is fixedly sleeved on the outer surface of the rotating shaft, and a guide hole is opened on the outer surface of the disc.

[0010] Preferably, the outer surface of the shift lever is fixedly connected to a guide shaft, and the outer surface of the guide shaft is slidably connected to the inner wall of the guide hole.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The pneumatic clamping mechanism not only clamps the outer wall with concave jaws, but also introduces an inner wall clamping mechanism (that is, the rubber arc plate is pressed against the inner wall of the pipe). This dual clamping method greatly improves the stability of the pipe when subjected to external impact or vibration, effectively reduces the risk of the pipe loosening or falling off, thereby improving the safety and reliability of the entire system.

[0013] 2. The pneumatic clamping mechanism has a compact design. In particular, the fixing frame can be placed inside the pipe near the end, without taking up too much space outside the pipe. This is conducive to the installation and maintenance of the pipe in a limited space. At the same time, this layout also helps to reduce the impact of the external environment on the clamping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a schematic diagram of the surface structure of the fixing frame of this application;

[0016] Figure 3 This is a schematic diagram of the disk surface structure of this application.

[0017] Among them: 1. Cylinder; 2. Through shaft; 3. Swing arm; 4. Concave clamping jaw; 5. Drive shaft; 6. Sleeve; 7. Frame shaft; 8. Drive plate; 9. Drive shaft; 10. Connecting plate; 11. Fixed frame; 12. Shifting rod; 13. Rubber arc plate; 14. Rotating shaft; 15. Knob; 16. Disc; 17. Guide hole; 18. Guide shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0019] See also Figure 1-3A pneumatic clamping mechanism includes a cylinder 1, a through shaft 2 is fixedly penetrated on the inner side of the cylinder 1, a swing arm 3 is rotatably connected to the outer surface of the through shaft 2, a concave clamping claw 4 is provided on the end of the swing arm 3 away from the through shaft 2, a driving shaft 5 is fixedly connected to the output end of the cylinder 1, a sleeve frame 6 is fixedly sleeved on the outer surface of the driving shaft 5, a frame shaft 7 is fixedly penetrated on the inner side of the sleeve frame 6, a driving plate 8 is rotatably connected to the outer surface of the frame shaft 7, a driving shaft 9 is fixedly penetrated on the inner side of the swing arm 3, and the outer surface of the driving shaft 9 is rotatably connected to the end of the driving plate 8 away from the frame shaft 7, and an inner wall supporting mechanism is provided on the driving shaft 5.

[0020] Through the above technical solution, in the process of clamping the pipe, the device uses the cylinder 1 as the power source of the pneumatic equipment, thereby driving the sleeve 6 through the drive shaft 5, and cooperates with the drive plate 8 to pull the swing arm 3, and finally allows the concave clamping claw 4 to clamp the outer wall of the pipe, and cooperates with the inner wall supporting mechanism to stably support the inner wall of the pipe through the evenly distributed rubber arc plate 13.

[0021] Specifically, the inner wall supporting mechanism includes a connecting plate 10 fixedly connected to the end of the driving shaft 5 away from the cylinder 1 , and a fixing frame 11 is fixedly connected to the outer surface of the connecting plate 10 .

[0022] Through the above technical solution, a strip groove is opened on the outer surface of the fixing frame 11. This design is to allow the guide shaft 18 to move smoothly outward along the strip hole during the driving process, thereby pushing and pulling the shift lever 12.

[0023] Specifically, a displacement rod 12 is slidably connected to the inner side of the fixing frame 11 , and a rubber arc plate 13 is provided at one end of the displacement rod 12 away from the fixing frame 11 .

[0024] Through the above technical solution, the four groups of rubber arc plates 13 cooperate with the displacement support rods 12 to be evenly distributed inside the pipe, providing relatively stable external support for the pipe.

[0025] Specifically, the outer surface of the fixing frame 11 is rotatably connected to a rotating shaft 14 , and a knob 15 is provided at one end of the rotating shaft 14 away from the fixing frame 11 .

[0026] Through the above technical solution, when the knob 15 is turned to drive the shaft 14 to rotate, the disc 16 will rotate synchronously therewith, and during this process, the four groups of guide holes 17 will make circular motions.

[0027] Specifically, a disc 16 is fixedly sleeved on the outer surface of the rotating shaft 14 , and a guide hole 17 is opened on the outer surface of the disc 16 .

[0028] Through the above technical solution, the four groups of guide holes 17 are designed to be arc-shaped, the purpose of which is to cooperate with the guide shaft 18, that is, to drive the guide shaft 18 through the circumferential rotation of the guide holes 17.

[0029] Specifically, the outer surface of the shift lever 12 is fixedly connected to the guide shaft 18 , and the outer surface of the guide shaft 18 is slidably connected to the inner wall of the guide hole 17 .

[0030] Through the above technical solution, the outward movement of the guide shaft 18 drives the displacement rod 12 to move outward along the inner side of the fixing frame 11, thereby stably holding the rubber arc plate 13 against the inner wall of the pipe.

[0031] Working principle: When the pneumatic equipment is clamping the pipe, the cylinder 1 is used to drive the drive shaft 5 to extend and retract. When the drive shaft 5 is in the process of contraction, the concave clamping jaws 4 will gradually approach the cylinder 1. During this process, the two ends of the driving plate 8 will rotate along the frame shaft 7 and the driving shaft 9 respectively, and the driving plate 8 will pull the swing arm 3 through the driving shaft 9 during the deflection process, so that the swing arm 3 rotates along the through shaft 2. During this period, the other ends of the two groups of swing arms 3 will gradually approach each other until the two groups of concave clamping jaws 4 stably clamp the outer wall of the pipe. At this time, the entire fixed frame 11 is in a position near the end of the pipe. In order to improve the stability of the pipe and reduce the risk of the pipe loosening or falling off due to the external environment, the knob 15 can be turned to drive the rotating shaft 14 to rotate. During this process, the disc 16 will rotate synchronously. The arc-shaped guide hole 17 opened on the surface of the disc 16 will make a circular motion, and the guide hole 17 will drive the guide shaft 18 during its rotation, so that it slides outward along the strip hole opened on the surface of the fixed frame 11, so as to push the shift lever 12 until the rubber arc plate 13 at the other end of the shift lever 12 is stably held against the inner wall of the pipe (four groups of rubber arc plates 13 are evenly distributed inside the pipe). The design of the rubber arc plate 13 has a certain degree of elasticity and adaptability, and can automatically adjust according to pipes of different inner diameters to ensure the tightness and uniformity of clamping. The inner and outer walls of the pipe are designed to be clamped. This double clamping mechanism not only enhances the stability of the pipe, but also reduces the risk of accidents caused by loosening or falling of the pipe to a certain extent, and can effectively ensure the safety of personnel and equipment.

[0032] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A pneumatic clamping mechanism, comprising a cylinder (1), characterized in that: A through-shaft (2) is fixedly passed through the inner side of the cylinder (1), a swing arm (3) is rotatably connected to the outer surface of the through-shaft (2), a concave clamping claw (4) is provided at one end of the swing arm (3) away from the through-shaft (2), a driving shaft (5) is fixedly connected to the output end of the cylinder (1), a sleeve frame (6) is fixedly sleeved on the outer surface of the driving shaft (5), a frame shaft (7) is fixedly passed through the inner side of the sleeve frame (6), a driving plate (8) is rotatably connected to the outer surface of the frame shaft (7), a driving shaft (9) is fixedly passed through the inner side of the swing arm (3), and the outer surface of the driving shaft (9) is rotatably connected to the end of the driving plate (8) away from the frame shaft (7), and an inner wall supporting mechanism is provided on the driving shaft (5).

2. A pneumatic clamping mechanism according to claim 1, characterized in that: The inner wall supporting mechanism comprises a connecting plate (10) fixedly connected to an end of the driving shaft (5) away from the cylinder (1), and the outer surface of the connecting plate (10) is fixedly connected to a fixing frame (11).

3. The pneumatic clamping mechanism according to claim 2, characterized in that: The inner side of the fixing frame (11) is slidably connected to a displacement rod (12), and an end of the displacement rod (12) away from the fixing frame (11) is provided with a rubber arc plate (13).

4. The pneumatic clamping mechanism according to claim 3, characterized in that: The outer surface of the fixing frame (11) is rotatably connected to a rotating shaft (14), and a knob (15) is provided at one end of the rotating shaft (14) away from the fixing frame (11).

5. The pneumatic clamping mechanism according to claim 4, characterized in that: A disc (16) is fixedly sleeved on the outer surface of the rotating shaft (14), and a guide hole (17) is opened on the outer surface of the disc (16).

6. The pneumatic clamping mechanism according to claim 5, characterized in that: The outer surface of the displacement lever (12) is fixedly connected with a guide shaft (18), and the outer surface of the guide shaft (18) is slidably connected with the inner wall of the guide hole (17).

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