High-speed continuous sealing and cutting device

Abstract

The invention provides a high-speed continuous sealing and cutting device applied to a pillow type packaging machine. The two ends of an upper cutter shaft are provided with upper transmission eccentric discs (23), the two ends of a lower cutter shaft are provided with lower transmission eccentric discs (22), an input belt assembly and an output belt assembly are connected sequentially through an input displacement transmission rod (4), a displacement eccentric seat (12) and an output displacement transmission rod (9), the displacement eccentric seat is arranged on a displacement control shaft (24), and the displacement control shaft is connected with a main driving assembly. The upper transmission eccentric discs and the lower transmission eccentric discs respectively do eccentric rotation, further, a sealing and cutting upper cutter, a sealing and cutting lower cutter and a pillow type packaging bag hot sealed between the sealing and cutting upper and lower cutters are driven to firstly move towards the left side and then move towards the right side for a distance, and the continuous hot sealing is kept and lasts for a certain time for ensuring the hot sealing effect. Therefore the integral sealing and cutting speed can be accelerated, the packaging speed can reach more than 180 pieces per minute, in addition, the conveyance is fast and smooth, and the production efficiency is high.

Description

technical field [0001] The invention relates to packaging machinery, in particular to a sealing and cutting device for a pillow packaging machine. technical background [0002] At present, the pillow packaging machine mainly includes a frame, an unwinding device, a material conveying device, a forming device, a middle sealing device, and a sealing and cutting device. To heat seal and cut the packaging film (with materials already loaded) that enters between the lower sealing knife and the upper sealing knife, in order to ensure the heat sealing effect, a certain heat sealing time is required, so the rotation speed of the rotary type lower sealing and cutting can only be reduced. The film is heat-sealed and cut at the same time, resulting in low work efficiency, generally about 120 pieces per minute. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned shortcomings, and provide a high-speed continuous sealing and cutting...

AI Technical Summary

Problems solved by technology

[0002] At present, the pillow packaging machine mainly includes a frame, an unwinding device, a material conveying device, a forming device, a middle sealing device, and a sealing and cutting device. To heat seal and cut the packaging film (with materials already loaded) that enters between the lower sealing knife and the upper sealing knife, in order to ensure the heat sealing effect, a certain heat sealing time is required, so the rotation speed of the rotary type lower sealing and cutting can only be reduced. The film is heat-sealed and cut at the same time, resulting in low work efficiency, generally about 120 pieces per minute

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