Crosscutting and conveying device for woven plastic cylindrical cloth for block bottom valve bag production

Abstract

The invention provides a crosscutting and conveying device for woven plastic cylindrical cloth suitable for block bottom valve bag production. The crosscutting and conveying device comprises a conveying roller wheel set, a bag press plate mechanism, a cutter mechanism, a cutter bag press plate seat and a bag sheet bearing platen, wherein at least two groups of grooves are correspondingly arranged at corresponding positions of upper and lower roller wheels of the conveying roller wheel set respectively, and gas ejector pipes are fixedly embedded in the grooves to form upper and lower layers of gas ejector pipes; and cylindrical cloth is conveyed between the conveying roller wheel set and the upper and lower layers of gas ejector pipes to the cutter bag press plate seat, and cylindrical cloth bag sheets cut by the cutter mechanism are blown to the bag sheet bearing platen by airflow ejected by the gas ejector pipes. According to the crosscutting and conveying device, upper and lower layers of gas ejector pipes are arranged on the conveying roller wheel set, so that cylindrical cloth bag sheets can be conveyed under the clamping of two layers of airflow, rake angles and turnover of front ends of bag sheets are effectively avoided, stable conveying, reliable positioning and 90-degree turning of cut cylindrical cloth bag sheets can be performed smoothly.

Description

technical field [0001] The invention relates to the field of bag making machines in packaging machinery, in particular to a cross-cutting and conveying device for plastic woven tube cloth in square bottom valve pocket bag making machines. Background technique [0002] The bag-making process using composite plastic woven cloth usually adopts L-shaped arrangement. Firstly, the tube cloth is unrolled and enters the cutting device, and the tube cloth is cut and conveyed in a straight line according to the fixed length or according to the printed color code, and then the cut tube sheet is laid on the supporting table at 90 degrees It is turned and conveyed into different molding devices for molding. For example, the common plastic woven bag automatic cutting and sewing machine, for the cut and flattened tubular sheet on the support plate, the gripper or friction roller is used to grab the bag piece, and it is turned and conveyed at 90 degrees, and then enters the bottom of the b...

AI Technical Summary

Problems solved by technology

After horizontal cutting and conveying, if the bag pieces cannot be kept vertical and flat on the supporting table, it will directly affect the bag forming and yield

[0006] In addition, the cross-cutting and conveying device of the prior art, several conveyor belts uniformly arranged on the support plate, with the same line speed and the speed of bag piece movement, for making square bottom valve bags, cutting tubular sheet 90 Due to the inconsistency in the installation level of the support plate and the conveyor belt, as well as the inconsistent friction caused by different materials, these conveyor belts will become an unstable factor for high-precision vertical steering

[0007] At the same time, the cross-cut conveying device of the prior art, the tangent point of the conveying pair of rollers, the cutter bag pressing rod seat and the bag sheet supporting platen are basically arranged on the same horizontal plane along the moving direction of the bag sheet; such arrangement , resulting in the cut bags must completely complete the 90-degree turn to transport, and completely leave the bag supporting platen before continuing to the next bag length of transport

This reduces productivity and also prevents bag sheet cutting and conveying speeds from matching the welding speed of square bottom valve bag bottoms

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