Paper packaging bag bottom sealing device

Abstract

The invention discloses a paper packaging bag bottom sealing device which comprises a rack, a conveying device, a heat seal device and a compaction device. Supporting plates are arranged on the two sides of the rack correspondingly. The conveying device is arranged between the supporting plates on the two sides and comprises a driving roller and a driven roller which are arranged in the conveying direction. The driving roller and the driven roller are sleeved with a conveying belt. A buffer plate is fixed to the inner side of the supporting plate located on the side of the feeding end, and the heat seal device and the compaction device are sequentially arranged on the supporting plate on the side far away from the feeding end in the conveying direction of the conveying belt. The heat seal device comprises a heat seal seat arranged on the inner side of the corresponding supporting plate. A heat seal cutter is arranged above the heat seal seat. The two ends of the heat seal cutter are fixed through first support rods, and the first support rods and the supporting edge on the outer side of the corresponding supporting plate are fixed through a reset device. The paper packaging bag bottom sealing device is reasonable in structure, paper bags are prevented from being automatically opened in the conveying process, it is ensured that paper bag bottom sealing is firmer and more reliable, bottom sealing is complete, and the rate of finished products is increased.

Description

technical field [0001] The invention relates to the field of packaging equipment, in particular to a paper packaging bag bottom sealing device. Background technique [0002] Paper packaging bags are widely used because of their low production cost, low environmental pollution, and convenient use. In the production of paper packaging bags, heat sealing is usually used to bond the plastic materials inside the bottom of the two-layer paper packaging bags. The packaging bags produced by only one heat sealing process are often not strong enough at the seal, and often crack during use, which not only brings inconvenience to the user, but also greatly affects the applicability of the packaging bag; In the process, there is no good device to stably press the top surface of the paper bag, and the paper bag is easy to open, causing the bottom cover of the bag to deform, making the seal incomplete, prone to gaps, and reducing the yield of the packaging bag. Contents of the invention ...

AI Technical Summary

Problems solved by technology

[0002] Paper packaging bags are widely used because of their low production cost, low environmental pollution, and convenient use. In the production of paper packaging bags, heat sealing is usually used to bond the plastic materials inside the bottom of the two-layer paper packaging bags. The packaging bags produced by only one heat sealing process are often not strong enough at the seal, and often crack during use, which not only brings inconvenience to the user, but also greatly affects the applicability of the packaging bag; In the process, there is no good device to stably press the top surface of the paper bag, the paper bag is easy to open, and the bottom cover of the bag is deformed, making the seal incomplete, prone to gaps, and reducing the yield of the packaging bag

Images