Hot sealing and cold cutting device for plastic film bag making machine

Abstract

The invention provides a hot sealing and cold cutting device for a plastic film bag making machine, which comprises an upper fixing plate, a lower fixing plate and a cylinder. The cylinder is fixed to the upper end of the upper fixing plate, two ends of the upper fixing plate are fixed onto the lower fixing plate by mounting guide rods, an upper movable plate and a lower movable plate which are capable of sliding and are spaced from each other are disposed on the guide rods, the upper movable plate is fixed to a piston rod of the cylinder, the distance between the same sides of the upper movable plate and the lower movable plate is fixed by a spring hanger rod, a hot sealing cutter device is arranged in a gap between the other same sides of the upper movable plate and the lower movable plate, a hot sealing cutter of the lower end of the hot sealing cutter device matches with a hot sealing cutting edge disposed on the lower movable plate, a blade groove is arranged at the lower end of the lower movable plate, a cutter saddle oscillating bar is mounted on a rotary driver and extends to a blade through hole, the lower end of a cutter saddle is fixed onto the cutter saddle oscillating bar, the upper end of the cutter saddle is attached to the lower end of the lower fixing plate, a blade is mounted on the cutter saddle, and the top end of the blade is protruded out of the blade through hole. Cutting and sealing can be completed on the same device, and work efficiency can be effectively improved.

Description

technical field [0001] The invention relates to a multi-layer co-extruded heat-shrinkable film back-stage production equipment, in particular to a heat-sealing and cold-cutting device used in a plastic film bag making machine. Background technique [0002] Heat-shrinkable high-barrier food packaging film is mainly used in the packaging of cold fresh meat and seafood. [0003] The heat-shrinkable film bag making equipment on the market basically includes heat-sealing and cold-cutting processes, and the heat-sealing and cold-cutting processes are mostly divided into two processes. Due to the elongation of the process, it is easy to cause the heat-sealing line and subsequent cold-cutting The side lines are inconsistent, even skewed and trimmed, resulting in unqualified, unattractive, and inconsistent appearance of the formed bag; how to realize the heat sealing of the shrink film and minimize the heat sealing line of the product during the heat sealing and cold cutting process...

AI Technical Summary

Problems solved by technology

[0003] The heat-shrinkable film bag making equipment on the market basically includes heat-sealing and cold-cutting processes, and the heat-sealing and cold-cutting processes are mostly divided into two processes. Due to the elongation of the process, it is easy to cause the heat-sealing line and subsequent cold-cutting The side lines are inconsistent, even skewed and trimmed, resulting in unqualified, unattractive, and inconsistent appearance of the formed bag; how to realize the heat sealing of the shrink film and minimize the heat sealing line of the product during the heat sealing and cold cutting process Margin is a major problem in the industry at present

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