A pneumatic finger and positioning mechanism

Abstract

The invention discloses a pneumatic finger. The pneumatic finger comprises two clamping claws arranged oppositely, and further comprises a first clamping part arranged on one clamping claw and a second clamping part arranged on the other clamping claw, the first clamping part is provided with a first limiting protrusion used for limiting the minimum distance between the two clamping claws, and the first limiting protrusion is located between the two clamping claws. The second clamping part and the first clamping part form a clamping portion suitable for clamping a workpiece. When the two clamping claws of the pneumatic finger are closed, the distance between the clamping claws can not be shortened constantly after the other clamping claw makes contact with the first limiting protrusion, and the first clamping part and the second clamping part just form the clamping portion suitable for clamping the workpiece; in this way, the clamping portion is always kept in the most appropriate size for clamping the workpiece, and it is effectively avoided that because the distance between the clamping claws is too short, the workpiece is damaged. The invention further discloses a positioning mechanism with the pneumatic finger.

Description

technical field [0001] The invention relates to the technical field of mechanical equipment, more specifically, to a pneumatic finger and a positioning mechanism. Background technique [0002] Pneumatic fingers, also known as pneumatic grippers or pneumatic grippers, are actuators that use compressed air as power to clamp or grab workpieces. Its main function is to replace human grasping work, which can effectively improve production efficiency and work efficiency. security. [0003] The pneumatic finger generally drives the crank through the pneumatic piston installed inside it, and the crank action drives the two jaws to realize the gripping and opening action. For different workpieces, the two jaws of the pneumatic finger need to be set differently. The distance between the workpieces can be clamped without causing damage to the workpiece. [0004] However, after long-term use, the gripping accuracy of the pneumatic fingers will become unguaranteed, and the distance bet...

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Problems solved by technology

[0004] However, after long-term use, the gripping accuracy of the pneumatic fingers will become unguaranteed, and the distance between the two jaws will have a large deviation from the originally set distance. If the pneumatic fingers have already gripped the workpiece, and the two The distance between the jaws still continues to shrink, so that it is finally smaller than the initially set distance, which may cause permanent damage to the workpiece

For example, in the process of bonding the air-conditioning substrate and the panel, the panel needs to be moved by pneumatic fingers to achieve bonding with the substrate, and the air-conditioning panel is generally made of plastic material. Once the pneumatic fingers are closed, between the two jaws If the distance is too small, the air conditioner panel will be crushed, which will lead to the scrapping of the air conditioner panel

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