Heat-seal quality online detection device of plastic bag longitudinal heat-seal assembly line

A technology of longitudinal heat sealing and detection device, which is applied in the field of plastic machinery, can solve problems such as difficulty in ensuring the qualified rate of products, time-consuming, labor-intensive and labor-intensive problems, and achieve the effect of simple structure, guaranteed product quality, and sensitive action

Pending Publication Date: 2018-11-23
河北方大包装股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, relying on artificial eyesight to identify quality defects and reject unqualified products is time-consuming and labor-intensive. Although the inspectors spend a lot of energy on picking, it is difficult to guarantee the pass rate of products

Method used

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  • Heat-seal quality online detection device of plastic bag longitudinal heat-seal assembly line
  • Heat-seal quality online detection device of plastic bag longitudinal heat-seal assembly line
  • Heat-seal quality online detection device of plastic bag longitudinal heat-seal assembly line

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] See image 3 , The plastic bag making machine adopts the continuous heat sealing technology of longitudinal heat sealing knife and plastic film technology. The plastic film is always in a heated state and moves continuously from bottom to top, and the opening 3 of the heat-sealed plastic bag is a continuous slit longitudinally cut. Proximity switch 9 of the present invention adopts SN04-N model, and the object that it can detect must be metal object, belongs to inductive type proximity switch, and it is made up of LC high-frequency oscillator and amplifying processing circuit.

[0018] The trigger head 10 of the trigger lever 7 is inserted into the heat-sealable plastic bag from the opening 3 of the article containing it and contacts with the longitudinal heat-sealing seam in the bag, and the sensing end of the proximity switch 9 contacts with the trigger lever 7 . If the longitudinal heat-sealing seam of the plastic bag on the assembly line is firm and intact, the tri...

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PUM

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Abstract

The invention provides a heat-seal quality online detection device of a plastic bag longitudinal heat-seal assembly line. According to the detection device, a proximity switch is used for inducing theshifting information of a triggering rod and controlling the working state of a plastic bag longitudinal heat-seal machine; in the process of continuous upward running of a plastic bag, a triggeringhead of the triggering rod exerts transverse outward jacking force on a longitudinal heat-seal seam in the plastic bag; the triggering head and the triggering rod lose resistance and shift outward inthe area of longitudinal heat-seal seam defects; and the proximity switch which is originally in mutual induction with the triggering rod moves after inducing the shifting information of the triggering rod, and timely controls the halt of the plastic bag longitudinal heat-seal machine. The heat-seal quality online detection device has the characteristics of simple structure, sensitive movement, improvement of production efficiency and ensuring of product quality, can effectively replace the heavy labor of detection workers, quickly finds the defects of heat seal quality of the plastic bags, timely controls the halt of equipment and gets rids of sub-quality products.

Description

technical field [0001] The invention relates to the technical field of plastic machinery, in particular to an online detection device for heat sealing quality of a plastic bag longitudinal heat sealing production line. Background technique [0002] Most of the openings for the plastic bag to hold the articles are opened above the upper and lower sides of the plastic bag. There is a rectangular plastic bag, the opening of which holds the article is on the side of the center vertical line of the plastic bag when it is used vertically, the heat sealing process of this plastic bag adopts the continuous longitudinal heat sealing technology of plastic film and uses a longitudinal heat sealing knife To complete this heat-sealing operation, the opening for holding the article is a continuous slit reserved on one side of the central vertical line of the plastic bag. [0003] The process is as follows: first, heat seal the longitudinal sides of two layers of continuously moving plast...

Claims

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Application Information

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IPC IPC(8): B31B70/64B31B70/74
CPCB31B70/006B31B70/64B31B70/74
Inventor 杨志
Owner 河北方大包装股份有限公司
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