Pulse heat sealing type bag making machine

Abstract

The invention discloses a pulse heat sealing type bag making machine. The pulse heat sealing type bag making machine comprises a machine frame, a control device, an unwinding mechanism, a longitudinalsealing mechanism, a transverse sealing mechanism, a traction mechanism and a traction bag cutting mechanism, and is characterized in that the longitudinal sealing mechanism and the transverse sealing mechanism each comprise at least one controllable sealing device, the controllable sealing devices comprise upper sealing units, upper sealing driving units, lower sealing units, lower sealing driving units and frames, the upper sealing units comprise upper sealing knives, the lower sealing units comprise lower sealing knives, and the upper sealing knives and the lower sealing knives are both pulse sealing knives. The pulse heat sealing type bag making machine has the beneficial effects that the bag making machine adopts a pulse heat sealing structure, so that the temperature control is accurate, the temperature can be freely set, the temperature curve can be displayed in real time, the heat sealing pressure can be accurately and effectively controlled, floating and virtual sealing of aheat sealing part can be effectively prevented in the actual production, bag making can be completed with high quality and high efficiency, the structural size of the bag making machine is effectivelyreduced, and the production loss is greatly reduced.

Description

technical field [0001] The present invention relates to a bag-making machine, more specifically to a pulse heat-sealing type bag-making machine with precise temperature control, free setting of temperature, real-time display of temperature curve, and effective prevention of heat-sealed parts from floating and virtual sealing. machine. Background technique [0002] The sealing method of traditional bag making machines mostly adopts the hot plate heat sealing method, that is, two overlapping films are placed between the two sealing knives, and then the externally heated sealing knives (either one sealing knife or two sealing knives) are heated ) to press the film, and the two films are melted and bonded under the combined action of pressure and high temperature. [0003] Hereinafter, for the convenience of description, the two sealing knives are called upper sealing knife and lower sealing knife respectively. [0004] The sealing knife structure of the traditional bag making...

AI Technical Summary

Problems solved by technology

[0008] 1. In order to facilitate the replacement of the sealing knife, the heating tube is generally built into the heating plate, and the temperature is transferred from the heating plate to the sealing knife. Therefore, it takes a long time for heating and heat preservation to ensure that the temperature of the sealing knife is relatively stable, resulting in large heat loss. ;

[0009] 2. Since the thermocouple probe used for temperature measurement is usually directly attached to the side of the sealing knife, there is a temperature difference with the bottom surface of the sealing knife for thermal cooperation, so the measured temperature of the thermocouple probe and the actual temperature of the bottom surface of the sealing knife are There are errors;

[0010] 3. Due to the continuous contact with the high temperature of the heat sealing knife, the temperature insulation cloth in the middle of the sealing knife is easy to be heated and aged and needs to be replaced frequently;

[0011] 4. During the bag making process, since a single heat seal cannot completely seal the two layers of film to achieve the required heat seal strength, 2 or even 3 or more heat seals are usually used to compensate for the heat seal strength; This makes the structure of the bag making machine a lot longer, resulting in cumbersome bag making process;

[0012] 5. Because the sealing knife of the hot plate heat sealing method maintains a high temperature continuously, it is easy to cause workers to be scalded, the risk is greater, and the waste of heat energy is also relatively large

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