Bonding mechanism and bonding method of inner bag and outer bag of double-layer bag

Abstract

The invention discloses a bonding mechanism and bonding method for an inner bag and an outer bag of a double-layer bag, wherein the mechanism is provided with a base, and the base is provided with a first suction cup, an engaging device, a second suction cup and a positioning device with a third suction cup , the joining method is as follows: the inner bag is located in the outer bag and protrudes from the opening of the outer bag to form a protrusion; the upper and lower suction cups of the first suction cup respectively suck the sides of the outer bag and move in opposite directions, and the upper and lower suction cups of the second suction cup suck respectively The side of the protruding part moves in the opposite direction; the third suction cup enters the inner bag to suck the inner bag, the second suction cup cancels the adsorption, and the third suction cup moves inward until the opening of the inner bag is aligned with the opening of the outer bag; the joint device connects the outer bag with the inner bag Jointing with each other; through this, the inner bag and the outer bag can be joined automatically, so that the joint surface is more accurate, and it can also reduce the occurrence of contamination caused by contact.

Description

technical field [0001] The invention relates to a packaging bag processing equipment, in particular to a processing mechanism for bonding an inner bag and an outer bag of a double-layer tape in an automated manner. Background technique [0002] In the prior art, packaging bags loaded with edible grades generally have the structure of inner and outer double-layer bags, with an outer bag body and an inner bag body, and the outer bag body is sleeved on the outer edge surface of the inner bag body, and the outer bag body is a woven bag or a paper bag. Plastic bags, while the inner bag body is made of PE film, and the outer bag body is made of woven bags or paper-plastic bags because of its strong structure, which can bear the weight of the goods and the deformation of the bag body after the bag is filled with goods. The inner film is made of PE material, which is to maintain the freshness of food-grade goods, or to block the moisture from the outside to prevent the goods in the ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, the opening end of the inner bag body and the outer bag body is combined, and the part of the inner bag body that protrudes from the opening of the outer bag body is pushed toward the inner direction of the outer bag body until the inner bag body is closed by manual operation. The opening edge is aligned with the opening edge of the outer bag body, and then the openings are combined with each other by using the bonding machine; but because the operator directly touches the inner bag body during the operation, it may cause contamination of the inner bag body and violate relevant health regulations In addition, the combination of the opening of the inner bag body and the opening of the outer bag body is also achieved through manual adjustment, which increases the time required for the overall operation process and is not conducive to the mass production of double-layer packaging bags. In addition, the error caused by manual alignment of the opening of the inner bag and the outer bag is also more obvious

[0005] As a large number of repeated actions of automated machinery, the wear and tear of the vulnerable parts such as the bonded joint is very serious due to the long-term use of the bonded joint due to the rigid contact with the bonding surface. How to improve the service life of the bonded joint is very important for the increase in the service time of the device. And, now Some internal and external bag bonding devices have no means of controlling the bags to be bonded during the bonding process, which can easily lead to poor bonding effects due to uncontrolled bags, and even an increase in the rate of defective products

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