A square bag production line

Abstract

The invention discloses a tetragonal bag production line. The tetragonal bag production line comprises a side thin-film conveying device, a backing material thin-film conveying device, a front surface thin-film conveying device and a forming device. The tetragonal bag production line has the advantages that the production process is continuous, rapid and stable and the speed is controllable, the automation degree is high, the design is reasonable, the defective percentage is reduced, the production speed is increased, a thin-film sheet for producing bottom surface of a bag is integrated with that for producing rear surface of the bag, the machining difficulty of the bag bottom is remarkably reduced, the machining accuracy is increased, the bearing capacity of the bag is much higher than that of bags which are formed by insertion of single bottom surface sheets by the aid of the integrated forming, moreover, the bag is flat when flatly placed by means of repeated thermal setting, space is saved, the bag is easy to store, the structure is stable when the bag stands, packaged objects can be easily put in the bag, and the standing effect is good. Therefore, the tetragonal bag production line is excellent in economic benefit and easy to popularize.

Description

technical field [0001] The invention belongs to the field of mechanical design, in particular to a square bag production line. Background technique [0002] The bags currently on the market are also called three-dimensional bags. This type of bag has a special feature, that is, it has four dimensions of length, width, height and thickness at the same time. When it is opened, it looks like a cuboid. There are twelve There are edges and eight vertices, but one side is an opening. Square bags are often used in the outer packaging of air conditioners, refrigerators, computers, cosmetics, electronics and other products or directly used for outer packaging of food. It is also commonly used by logistics companies. It is mainly used to wrap up, and it plays the role of dust-proof, moisture-proof, and oxidation-proof for the packaged products, and it looks beautiful after packaging. Currently on the market, there is a stand-up single-piece flat-bottomed packaging bag. The standing s...

AI Technical Summary

Problems solved by technology

Currently on the market, there is a stand-up single-piece flat-bottomed packaging bag. The standing single-piece flat-bottomed packaging bag includes a bottom sheet of the packaging bag and a top sheet. The bottom sheet is connected to the lower edge of the top sheet. The bottom sheet It is flat-bottomed and single-piece. The bottom structure of this bag is complex and difficult to process, and the creases are not scientific enough. When erected, the creases on the front surface of the top sheet are likely to cause the top sheet to bend, and the upper opening is easy to close , it is not conducive to the user to put items into the packaging bag, and the equipment for processing the bottom of the packaging bag is complicated, the steps are cumbersome, and the yield is low; there are other different square bags, but the sides and bottom of the square bag are basically the same It is made of materials that are inserted separately in the production process. After the machine is required to be aligned, there are many surfaces to be ironed, and the steps are more cumbersome, which makes the process and device of ironing complicated, the accuracy of ironing is difficult to control, and the rate of defective products is high. Production Low speed, unable to adapt to raw material costs and rising market requirements and high market demand

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