Bag bottom closing device of paper bag making machine

Abstract

The invention discloses a bag bottom closing device of a paper bag making machine. The bag bottom closing device of the paper bag making machine comprises a drum wheel assembly, two groups of foldingknife assemblies, a rear folding piece closing assembly, a front folding piece closing assembly and a pressing roller assembly. A front folding piece and a rear folding piece are arranged at the bag bottom of a paper bag. One group of folding knife assemblies is in transmission fit with the rear folding piece closing assembly; the two groups of folding knife assemblies can enable the rear foldingpiece at the bag bottom to move to the rear folding piece closing assembly along with the drum wheel assembly and close the rear folding piece under the driving of the folding knife assemblies; afterthe rear folding piece of the bag bottom is closed, the front folding piece of the bag bottom can move to the front folding piece closing assembly along with the drum wheel assembly to close the frontfolding piece, and then the front folding piece is rolled by the pressing roller assembly and output. The bag bottom closing device of the paper bag making machine has the advantages that a rear folding plate group is stable, reliable, free of impact sound, low in noise, small in error and accurate in action in the using process, accordingly, the bag bottom closing quality is guaranteed, the bagmaking speed is greatly increased due to the advantage of synchronous operation, the production efficiency is very high, and therefore the bag making cost is reduced.

Description

technical field [0001] The invention relates to a kind of packaging paper bag making equipment, in particular to a bag bottom closing device of a paper bag making machine with fixed specifications and high speed. Background technique [0002] Paper bags are widely used, and the demand for special food paper bags is soaring. As human beings become more and more aware of health and environmental protection, the use of plastic bags will definitely be banned in the world in the future, especially the fact that all food packaging bags use environmentally friendly paper bags. The bottom paper bags above the market Generally, it is produced by ordinary adjustable bag making machine. The closing mechanism of the bag bottom adopts the combination of chain and roller. In the existing closing mechanism, since the roller is driven by the swing arm, the gravity is unbalanced during the swinging process of the swing arm. High-speed operation will cause high noise and vibration, which will...

AI Technical Summary

Problems solved by technology

[0002] Paper bags are widely used, and the demand for special food paper bags is soaring. As human beings become more and more aware of health and environmental protection, the use of plastic bags will definitely be banned in the world in the future, especially the fact that all food packaging bags use environmentally friendly paper bags. The bottom paper bags on the market Generally, it is produced by an ordinary adjustable bag-making machine. The closure of the bottom of the bag adopts a closing mechanism that cooperates with a chain and a roller. In the existing closing mechanism, since the roller is driven by the swing arm, the gravity is unbalanced during the swinging process of the swing arm. High-speed operation will cause high noise and vibration, which will affect the closing of the bottom of the bag and cause errors. In addition, the swing arm rotates for a long cycle, and the bag-making speed can reach up to about 200 bags per minute. The production efficiency is also very low and the quality is poor. High cost of bag making

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