Repeated filling type packaging bag nitrogen filling device

Abstract

The invention discloses a repeated filling type packaging bag nitrogen filling device. The nitrogen filling device comprises a machine frame and an air inflation sub-clamp mechanism, wherein an air inflation pipe (13) is arranged at the position, between a left sub-clamp and a right sub-clamp of the air inflation sub-clamp mechanism, on the machine frame; rollers (12) are arranged at the upper endpart of the air inflation pipe; a rolling plate (4) is arranged at the position, above the air inflation pipe, of the machine frame, the rollers can roll on the rolling plate, and air inflation pipelifting mechanisms (5) and bag opening packaging mechanisms (15) are arranged on the side edges of the end parts of the rolling plates; and a feeding rotating disc (1) is arranged on the side edge ofthe machine frame, and a packaging bag conveying mechanism (3) is arranged at the position between the machine frame and the feeding rotating disc. According to the nitrogen filling device, the packaging bag conveying mechanism is used for conveying loaded packaging bags to a nitrogen filling station, and the air inflation pipe is used for carrying out continuous and repeated nitrogen filling andpumping on the packaging bags so as to guarantee the nitrogen content and concentration in the bags, so that the shelf life of the materials is properly prolonged, waste caused by the expiration of the materials is effectively avoided, and the material packaging quality is obviously improved.

Description

technical field [0001] The invention relates to a packaging machine, in particular to a nitrogen filling device for a packaging bag. Background technique [0002] At present, packaging bags are generally divided into three-side sealing bags, four-side sealing bags, special-shaped bags, M-shaped packaging bags, etc. During the filling and packaging process, in order to prolong the shelf life of the materials, the packaging bags are filled with nitrogen after the materials are filled. However, it is only limited to a short-term nitrogen filling. The content and concentration of nitrogen are not high, and the shelf life of materials cannot be guaranteed. It is easy to cause material expiration and waste, which will adversely affect packaging filling and packaging quality. Contents of the invention [0003] The object of the present invention is to overcome above-mentioned deficiency, and provide a kind of nitrogen filling device of multiple filling type packing bag that can c...

AI Technical Summary

Problems solved by technology

[0002] At present, packaging bags are generally divided into three-side sealing bags, four-side sealing bags, special-shaped bags, M-shaped packaging bags, etc. During the filling and packaging process, in order to prolong the shelf life of the materials, the packaging bags are filled with nitrogen after the materials are filled. However, it is only limited to a short-term nitrogen filling, the content and concentration of nitrogen are not high, the shelf life of materials cannot be guaranteed, and it is easy to cause material expiration and waste, which will adversely affect packaging filling and packaging quality.

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