Continuous type plastic film heat sealing machine

Abstract

The invention belongs to the technical field of plastic film heat sealing, and particularly relates to a continuous type plastic film heat sealing machine. The continuous type plastic film heat sealing machine comprises a frame body and a fixed base. An upper pole plate squeezes a lower pole plate, and the lower pole plate moves downwards to squeeze a first air bag to enable a movable rod fixedlyconnected with the driving end of a second air pressure cylinder communicating with the first air bag to stretch out. Meanwhile, since ascending of a partition plate enables a gear to ascend through an L-shaped transmission rod, the movable rod will not drive the gear to rotate when stretching out. After the upper pole plate leaves from the lower pole plate, hydrargyrum is shrunk after the temperature is decreased, and the gear is engaged with a rack on the movable rod through the L-shaped transmission rod. Meanwhile, due to the tension effect of a first spring and a second spring, the lower pole plate moves upwards, the first air bag is pulled to be expanded, therefore, the second air cylinder is shrunk, the movable rod fixedly connected with the driving end of the second air cylinder drives the gear to rotate, a rotating roller on the right side is driven through a belt to rotate, one part of the heat-sealed plastic film is rolled to the rotating roller on the right side, and continuous type heat sealing is achieved.

Description

technical field [0001] The invention belongs to the technical field of plastic film heat sealing, in particular to a continuous plastic film heat sealing machine. Background technique [0002] Plastic film heat sealing machine is a kind of machine that can heat seal plastic film to make plastic film pockets. Plastic film heat sealing packaging is widely used in the packaging of food, medicine and cosmetics. It has the advantages of low cost and high packaging efficiency. [0003] There have also been some technical solutions for plastic film heat sealing in the prior art, such as a Chinese patent with application number 2011103441873 disclosing a plastic film heat sealing machine, including a machine base, on which a heat sealing device is installed, and the heat sealing device includes the above The pole plate, the lower pole plate and the cylinder, the cylinder is placed on the horizontal plate, the guide shaft is fixed at both ends of the horizontal plate, the lower end o...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies in the prior art and to solve the problems of wrinkles caused by excessively high temperature of the plastic film, the inability to ensure the smoothness of the plastic film during heat sealing, and insufficient heat sealing, the invention proposes a continuous plastic film heat sealing machine, The thermal expansion of mercury pushes the partition plate to move up to increase the air pressure in the upper part of the airtight barrel and the air passage, and the gas passes through the pores to simply blow the plastic film to cool down, which can prevent the plastic film from being broken due to overheating; Press down the pole plate, the lower pole plate moves down and squeezes the first air bag to extend the movable rod of the second air cylinder connected with the first air bag, and at the same time, due to the rise of the separator, the gear is raised through the L-shaped transmission rod, and the movable rod stretches out. When the upper pole plate leaves the lower pole plate, the temperature of the mercury decreases and then shrinks, and the gear is meshed with the rack on the movable rod through the L-shaped transmission rod. At the same time, due to the first spring and the second spring The pulling force of the pulley moves the lower pole plate, pulls the first airbag to expand the first airbag, thereby shrinking the second air cylinder, the movable rod of the second air cylinder drives the gear to rotate, and the belt drives the right rotating roller to rotate The heat-sealed part of the plastic film is rolled into the right rotating roller to realize continuous heat-sealing; the second airbag is stretched by the lower plate moving down to expand the second airbag, thereby shrinking the third air cylinder and driving the smoothing block to shrink , to prevent the upper pole plate from being squeezed to the smoothing block when the upper pole plate moves down; when the upper pole plate moves down, the second air bag is squeezed, so that the driving end of the third air cylinder connected with the second air bag protrudes, and at the same time due to the right The rotation of the rotating roller pulls the plastic film, so that the plastic film that has been heat-sealed is wound on the right rotating roller; the third air cylinder drives the smoothing block to slide on the surface of the plastic film that has not been heat-sealed, smoothing the plastic film to prevent the plastic film from being heat-sealed Wrinkles lead to insufficient heat sealing

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