Compact pneumatic chuck

Abstract

The utility model relates to the field of clamping equipment, in particular to a compact type pneumatic chuck which comprises a clamping jaw mechanism, an opening and closing mechanism and a driving mechanism, the driving mechanism can drive the clamping jaw mechanism to be opened and closed through the opening and closing mechanism, the driving mechanism comprises a main shaft, a piston and a piston rod, the piston is installed on the piston rod, and the piston is installed on the main shaft. The piston rod is arranged on the spindle and can reciprocate in a piston cavity between the spindle and the piston rod, an air channel is arranged on the outer side face of the spindle and communicated with the piston cavity, and an annular rubber belt is arranged on the outer side of the air channel. The air inlet and outlet structure of the piston in the chuck driving mechanism is arranged on the bearing seat, an air distribution seat is omitted, cost is effectively saved, meanwhile, the size occupied by the air distribution seat is reduced, the structure is optimized, the whole chuck is more compact, only the bearing seat needs to be detached during maintenance, and the chuck driving mechanism is more convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to clamping equipment technical field, especially a compact pneumatic chuck. BACKGROUND

[0002] The chuck is one kind of clamping equipment, the workpiece to be processed is clamped by controlling the movement of the claw mechanism, a driving mechanism is arranged in the chuck, the claw mechanism is moved by the driving mechanism driving the opening and closing mechanism, the existing technology needs to set the gas distribution disc at the rear end of the whole chuck, the gas distribution disc supplies gas to the cylinder in the chuck, thereby controlling the opening and closing of the claw mechanism, but the gas supply disc is large in size, and the gas distribution disc is embedded in the chuck, so the whole chuck needs to be disassembled for maintenance and cleaning, which is very troublesome. SUMMARY

[0003] In view of the above problems, the utility model aims at providing a fork type claw chuck, which is compact in structure and convenient to clean and maintain.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a compact pneumatic chuck, comprising a claw mechanism, an opening and closing mechanism and a driving mechanism, the driving mechanism can drive the claw mechanism to open and close through the opening and closing mechanism, the driving mechanism comprises a main shaft, a piston and a piston rod, the piston is mounted on the piston rod and can reciprocate in the piston cavity between the main shaft and the piston rod, a gas channel is arranged on the outer side of the main shaft, the gas channel is communicated with the piston cavity, and an annular rubber belt is arranged outside the gas channel.

[0005] In the above technical scheme, a bearing seat is arranged outside the periphery of the gas channel, the bearing seat is sleeved on the main shaft, and bearings are arranged at both ends of the bearing seat.

[0006] In the above technical scheme, a rubber belt embedding groove is arranged on the inner side of the bearing seat, and the annular rubber belt is mounted in the rubber belt embedding groove.

[0007] In the above technical scheme, three groups of air inlet and outlet holes are arranged on the two sides and the top of the bearing seat.

[0008] In the above technical scheme, the opening and closing mechanism comprises a swing rod and a swing rod seat, the swing rod seat is mounted on the piston, both ends of the swing rod are respectively mounted on the swing rod seat and the claw mechanism, and the middle part of the swing rod is mounted on the support on the inner side of the shell through a hinge shaft.

[0009] In the above technical scheme, the gas channel is arranged in a ring shape on the outer periphery of the main shaft, a connecting channel is arranged in the main shaft, and the gas channel is connected with one end of the piston cavity through the connecting channel.

[0010] Compared with the traditional technical means, the technical scheme of the chuck driving mechanism has the beneficial effects that: the piston in the chuck driving mechanism is arranged on the bearing seat, the gas distribution seat is omitted, the cost is effectively saved, the volume occupied by the gas distribution seat is reduced, the structure is optimized, the chuck is more compact, and only the bearing seat needs to be disassembled during maintenance, so that the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] The foregoing and other objects, features and advantages of the present application will become more apparent from the following detailed description, when taken in conjunction with the accompanying drawings in which:

[0012] Figure 1 is a schematic view of the three-dimensional structure of the utility model;

[0013] Figure 2 is Figure 1 a schematic view of the front structure;

[0014] Figure 3 is a schematic view of the utility model;

[0015] Figure 4 is Figure 3 a local enlarged view;

[0016] Figure 5 is a schematic view of the three-dimensional structure of the utility model without the bearing seat;

[0017] Figure 6 is a schematic view of the three-dimensional structure of the bearing seat in the utility model;

[0018] The following signs are as follows: 100, chuck claw mechanism; 200, opening and closing mechanism; 210, swing rod; 211, hinged shaft; 220, swing rod seat; 300, driving mechanism; 310, main shaft; 311, connecting channel; 320, piston; 330, piston rod; 340, piston cavity; 350, air passage; 360, annular adhesive tape; 400, bearing seat; 410, bearing; 420, adhesive tape embedding groove; 430, air inlet and outlet hole; 500, chuck shell; 510, support. DETAILED DESCRIPTION

[0019] The following is inspired by the ideal embodiment of the utility model, and through the following description, relevant personnel can make various changes and modifications without deviating from the technical idea of the utility model. The technical scope of the utility model is not limited to the content of the specification, and must be determined according to the scope of the claims.

[0020] The utility model is further described with reference to the following drawings:

[0021] As Figures 1-6As shown in the figure, a compact pneumatic chuck comprises a claw mechanism 100, an opening and closing mechanism 200 and a driving mechanism 300, the driving mechanism 300 can drive the claw mechanism 100 to open and close through the opening and closing mechanism 200, the driving mechanism 300 comprises a main shaft 310, a piston 320 and a piston rod 330, the piston 320 is mounted on the piston rod 330 and can reciprocate in a piston cavity 340 between the main shaft 310 and the piston rod 330, a gas channel 350 is arranged on the outer side of the main shaft 310, the gas channel 350 is communicated with the piston cavity 340, and an annular rubber belt 360 is arranged outside the gas channel 350.

[0022] As shown in the figure, Figure 3 The outer periphery of the gas channel 350 is provided with a bearing seat 400, the bearing seat 400 is sleeved on the main shaft 310, and bearings 410 are arranged at both ends of the bearing seat 400.

[0023] As shown in the figure, Figure 3 , 4 A rubber belt embedding groove 420 is arranged on the inner side of the bearing seat 400, the annular rubber belt 360 is mounted in the rubber belt embedding groove 420, the annular rubber belt 360 can function as a one-way valve, under normal circumstances, the annular rubber belt 360 blocks the gas channel 350, and only when external air pressure is generated, the annular rubber belt 360 can be close to the gas channel 350, and gas can flow in.

[0024] As shown in the figure, Figure 1 , 6 Three groups of air inlet and outlet holes 430 are arranged on the bearing seat 400 and are respectively located at the two sides and the top of the bearing seat 400.

[0025] The opening and closing mechanism 200 comprises a swing rod 210 and a swing rod seat 220, the swing rod seat 220 is mounted on the piston 320, both ends of the swing rod 210 are respectively mounted on the swing rod seat 220 and the claw mechanism 100, and the middle part of the swing rod 210 is mounted on a support 510 on the inner side of a chuck shell 500 through a hinge shaft 211.

[0026] As shown in the figure, Figure 5 The gas channel 350 is arranged in a ring shape on the outer periphery of the main shaft 310, a connecting channel 311 is arranged in the main shaft 310, the gas channel 350 is connected with one end of the piston cavity 340 through the connecting channel 311, and the connecting channel 311 comprises

[0027] The above only describes preferred embodiments of the utility model and is not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A compact pneumatic chuck comprising a jaw mechanism, an opening and closing mechanism, and a driving mechanism, the driving mechanism being capable of driving the jaw mechanism to open and close through the opening and closing mechanism, characterized in that: The driving mechanism comprises a main shaft, a piston and a piston rod, the piston is mounted on the piston rod and can reciprocate in the piston cavity between the main shaft and the piston rod, the outer side of the main shaft is provided with an air passage, the air passage is communicated with the piston cavity, and the outer side of the air passage is provided with an annular rubber belt.

2. The compact pneumatic chuck according to claim 1, characterized in that The outer periphery of the air passage is provided with a bearing seat, the bearing seat is sleeved on the main shaft, and bearings are arranged at both ends of the bearing seat.

3. The compact aerodynamic chuck according to claim 2, wherein, The inner side of the bearing seat is provided with a rubber belt embedding groove, and the annular rubber belt is mounted in the rubber belt embedding groove.

4. The compact pneumatic chuck according to claim 2, characterized in that Three groups of air inlet and outlet holes are arranged on the two sides and the top of the bearing seat.

5. The compact aerodynamic chuck of claim 1, wherein, The opening and closing mechanism comprises a swing rod and a swing rod seat, the swing rod seat is mounted on the piston, both ends of the swing rod are respectively mounted on the swing rod seat and the claw mechanism, and the middle part of the swing rod is mounted on the support on the inner side of the shell through a hinge shaft.

6. The compact aerodynamic chuck of claim 1, wherein, The air passage is annularly arranged on the outer periphery of the main shaft, the main shaft is internally provided with a connecting channel, and one end of the air passage is connected with the piston cavity through the connecting channel.

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