Pneumatic opening and closing traction device

Abstract

A pneumatic opening and closing type traction device is characterized by comprising a fixed rod, a mounting plate mounted at one end of the fixed rod, a pneumatic opening and closing mechanism mounted on the fixed rod and the mounting plate and used for achieving opening and closing of traction wheels and pressure adjusting between the traction wheels, and a drive mechanism mounted on the fixed rod and used for achieving rotating of the traction wheels. The traction device has the beneficial effects that the structure is simple and compact, the device is mounted on a bag film packaging machine, the pressure between the traction wheels can be conveniently adjusted through the pneumatic opening and closing mechanism, slippage, caused by the too small pressure between the traction wheels, of a bag film and the traction wheels is avoided, bag film crushing and pressing damage caused by the too large pressure between the traction wheels is avoided, a packaging bag is conveniently adjusted, and stability of running of a packaging machine is improved.

Description

technical field [0001] The invention discloses a pneumatic opening and closing traction device, which belongs to the technical field of packaging machinery. Background technique [0002] At present, the traction mechanism of domestic packaging machines mostly uses springs to control the pressure between the traction wheels. This method has a complex structure and is not convenient for pressure control and adjustment. If the pressure between the traction wheels is too small, the bag film and the traction wheels will slip. Excessive pressure between the traction wheels causes the bag film to be crushed and broken, which reduces the stability of the packaging machine. Contents of the invention [0003] The purpose of the present invention is to provide a pneumatic opening and closing traction device to solve the complex structure and inconvenient pressure control and adjustment existing in the prior art. If the pressure between the traction wheels is too small, the bag film a...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pneumatic opening and closing traction device to solve the complex structure in the prior art and the inconvenient pressure control and adjustment. If the pressure between the traction wheels is too small, it will cause the bag film and the traction wheel to slip, and the traction wheel Excessive pressure between the bags will cause crushing and crushing of the bag film, which reduces the problem of the stability of the packaging machine.

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