Plastic bag sealing machine

Abstract

A plastic bag sealing machine provided by the present invention comprises a frame, a driving system, a sealing mechanism and a tensioning mechanism. The sealing mechanism comprises a heat seal seat, heat seal blocks and a dead lever, each heat seal block is provided with a heating unit, and the heat seal seat is positioned below the two heat seal blocks. The tensioning mechanism comprises first material pressing rods and second material pressing rods, and the first material pressing rods and the second material pressing rods are respectively disposed at two sides of the heat seal seat and in contact with a bag mouth side boundary and a bag bottom side boundary of a plastic bag. Compared with the prior art, the plastic bag sealing machine is provided with two heat seal blocks to respectively perform individual widening, heat seal and bonding of side surface seals of the bag mouth and the bag bottom of the plastic bag, use intensity requirements of the plastic bag are satisfied, and capacity of the plastic bag cannot be reduced; and the seals of the bag mouth and the bag bottom of two adjacent plastic bags can be bonded by one-time heat seal operation, so that production efficiency is high, and product quality is good.

Description

technical field [0001] The invention relates to the technical field of plastic bag manufacturing, in particular to a plastic bag sealing machine. Background technique [0002] When a plastic bag is equipped with a large or heavy object, the seals on both sides of the bag opening and the seals on both sides of the bottom of the bag are very easy to disengage, causing the plastic bag to be unusable. The bag is cut first, and then both sides of the cut plastic bag are edge-sealed. Usually, the side bonding width of the plastic bag is the same when sealing the edge, so it is difficult to grasp the bonding width. When the bonding width is too large, the capacity of the plastic bag will decrease. becomes smaller, the bonding width is too small, and the use strength of the plastic bag is insufficient. Contents of the invention [0003] The purpose of the present invention is to provide a sealing machine that can independently widen the adhesive width of the two sides of the bag ...

AI Technical Summary

Problems solved by technology

[0002] When a plastic bag is equipped with a large or heavy object, the seals on both sides of the bag opening and the seals on both sides of the bottom of the bag are very easy to disengage, causing the plastic bag to be unusable. The bag is cut first, and then both sides of the cut plastic bag are edge-sealed. Usually, the side bonding width of the plastic bag is the same when sealing the edge, so it is difficult to grasp the bonding width. When the bonding width is too large, the capacity of the plastic bag will decrease. Smaller, the bonding width is too small, and the strength of the plastic bag is not enough

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