An automatic heat-sealing and cold-cutting device for a plastic film bag making machine

Abstract

The invention discloses an automatic heat sealing and cold cutting device of a plastic film bag making machine. The automatic heat sealing and cold cutting device comprises an upper fixed plate, a lower fixed plate and a cylinder; guide rods are provided with an upper moving plate and a lower moving plate; a blade groove is formed in the lower end of the lower moving plate; a rotary driver is arranged at the lower end of the lower fixed plate and is provided with a cutter holder swing rod; the cutter holder swing rod is provided with a cutter holder; the cutter holder is provided with a blade; the guide rods are provided with a fixed rod; the fixed rod is provided with a heat sealing cutter device; a heat sealing cutter point is arranged at the upper end of the lower moving plate; elastic elements are arranged on the two sides of the fixed rod respectively; and the fixed rod is connected with the lower fixed plate through the elastic elements. According to the technical scheme, through matching of the fixed rod, the heat sealing cutter device and the elastic elements, heat sealing is finished, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a multi-layer co-extrusion heat-shrinkage post-production equipment, in particular to an automatic heat-sealing and cold-cutting device of 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. 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 sidelines are inconsistent, even skewed and trimmed, resulting in unqualified, unattractive, and non-uniform appearance of the bags after the line. 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...

AI Technical Summary

Problems solved by technology

But this invention has the following defects: the movement of the cylinder will cause the heat-sealing knife device to move down with the upper and lower movable plates simultaneously, and the heat-sealing knife device will not be used when cutting redundant plastic films. Gravity will cause the following problems: 1. Increase the load of the entire movement device, slow down the movement speed, and then affect the cutting speed of plastic film, thereby reducing the production efficiency of plastic film bag making; 2. Need the cylinder to provide greater power Make the whole device move, causing waste of resources

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