Device, for accurately putting inner bag into outer bag, of bag-in-bag packaging machine

Abstract

The invention relates to a device, for accurately putting an inner bag into an outer bag, of a bag-in-bag packaging machine. The device comprises a bag dropping bucket and an outer bag opening spreading mechanism at the outlet of the bag dropping bucket. The outer bag opening spreading mechanism comprises a cylinder, a U-shaped lug, a pin, pull rods, pawl hinges, pawl pins and bag spreading pawls. A body of the cylinder is fixed on the bag dropping bucket. The U-shaped lug is fixed at the lower end of the cylinder. The upper end of each of the two pull rods is hinged to the U-shaped lug through the pin. The lower end of each of the two pull rods is hinged to one bag spreading pawl through the corresponding pawl pin. The upper end of each bag spreading pawl is hinged to the bag dropping bucket through the corresponding pawl hinge. The bag dropping bucket is a guide device for putting the inner bag into the outer bag, an upper opening of the outer bag can be fully spread by the outer bag opening spreading mechanism, so that the inner bag can be put into the outer bag accurately, and technological guarantee is provided for stability and reliability improvement of the bag-in-bag packaging machine.

Description

technical field [0001] The invention relates to a bag-in-bag packaging machine, in particular to a device for accurately putting the inner bag into the outer bag of the bag-in-bag packaging machine. Background technique [0002] With the development of society and the improvement of people's awareness of environmental protection, people have higher and higher requirements for the environmental protection and safety of pesticides. Human hands cannot touch the pesticide materials, so these pesticides must be packaged in double-bag sealed packaging, referred to as bag-in-bag packaging. For example, powder or granules are first packaged with water-soluble film, and then the packaged inner bag is manually loaded. Secondary sealing packaging in the outer bag, this kind of bag-in-bag packaging scheme that first packs the powder or granule in the inner bag, and then manually puts it into the outer bag and seals it, although the packaging quality is good, but the work efficiency is l...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the improvement of people's awareness of environmental protection, people have higher and higher requirements for the environmental protection and safety of pesticides. Human hands cannot touch the pesticide materials, so these pesticides must be packaged in double-bag sealed packaging, referred to as bag-in-bag packaging. For example, powder or granules are first packaged with water-soluble film, and then the packaged inner bag is manually loaded. Secondary sealing packaging in the outer bag, this kind of bag-in-bag packaging scheme that first packs the powder or granule in the inner bag, and then manually puts it into the outer bag and seals it, although the packaging quality is good, but the work efficiency is low and the cost is low. High, unable to meet mass production requirements

After searching, there is no bag-in-bag packaging machine suitable for double-layer packaging of pesticides at home and abroad.

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