Tension stable type unrolling device for bag making machine

Abstract

The invention discloses a tension stable type unrolling device for a bag making machine. The tension stable type unrolling device comprises a machine frame and a raw paper tube. A paper guide roller is fixed to the lower portion of the machine frame. The lower end of a paper rolling shaft of the raw paper tube is provided with a pair of rolling bearings. The outer side of the upper portion of the raw paper tube is provided with a damping belt. One end of the damping belt is fixedly connected with the lower portion of the machine frame through a damping shock absorber, and a balance weight hammer is hung to the other end of the damping belt. The damping shock absorber is composed of a columnar front bracket, a cylindrical rear bracket, a front pull ring, a rear pull ring, a piston rod, an adjusting column, a thread connection portion, an adjusting sleeve and a spring. The inner sides of the front bracket and the rear bracket are connected through the piston rod and the adjusting column. The adjusting column is rotationally connected with the adjusting sleeve through the thread connection portion. The spring is limited between the front bracket and the adjusting sleeve. The damping shock absorber is additionally arranged at the fixed end of the damping belt, the peak value of tension of raw paper can be reduced in the starting process, the raw paper can be prevented from being pulled apart, a paper roll can be rapidly braked in the stop process, and the damping shock absorber shrinks to enable the paper roll to rotate reversely, and looseness of the raw paper is reduced.

Description

technical field [0001] The invention relates to the technical field of packaging equipment, in particular to a tension-stabilized unwinding device for a bag making machine. Background technique [0002] The bag making machine is a machine for making various plastic packaging bags or other material packaging bags. Its processing range is plastic or other material packaging bags of various sizes, thicknesses and specifications. In order to protect the environment, there is a trend of using paper bags instead of plastic packaging belts. The traditional process of producing paper bags by bag making machine includes: base paper unwinding, printing, seam gluing, pumping, bag cutting and conveying. Among them, it is required to keep the tension constant during the unwinding of the base paper, which is especially critical for the production of high-quality paper tubes. If the tension value is not constant or inappropriate, the base paper will wrinkle, break, and relax, and the prin...

AI Technical Summary

Problems solved by technology

[0003] The traditional unwinding device has shortcomings in the process of use. For example, if pure wood pulp is used as raw material, the production is normal, but if some wood pulp or recycled paper is used, a series of problems such as wrinkles, paper breaks, and wrong editions often occur during production.

Images