A film continuous conveying heat sealing device

Abstract

A film continuous conveying heat-sealing device, including a frame, a front pinch roller, a rear pinch roller, a heat-sealing device, a front fixed roller, a rear fixed roller, a swing frame, a swing mechanism, a front swing roller and a rear swing roller; The fixed roller and the rear fixed roller are located between the front pinch roller and the rear pinch roller; the front swing roller and the rear swing roller are installed on the swing frame and are located between the front pinch roller and the rear pinch roller. The fixed roller is between the front swing roller and the rear swing roller; the heat sealing device is installed on the frame and is between the front swing roller and the rear swing roller. When the moving direction of the front swing roller and the rear swing roller is opposite to the film conveying direction, the distance between the front swing roller and the front fixed roller becomes longer for storage, and the distance between the rear swing roller and the rear fixed roller becomes shorter to release the film. Therefore, the film between the front swinging roller and the rear swinging roller is in a static state, and heat sealing is quite convenient without moving the heat sealing device, which greatly reduces energy consumption and greatly simplifies the external structure of the heat sealing device.

Description

technical field [0001] The invention relates to a film heat-sealing device, in particular to a film continuous conveying heat-sealing device. Background technique [0002] In the field of document bag production equipment and other fields, pinch rollers are generally used to step and pinch the film. When the film is suspended, the film is heat-sealed. The step-by-step pinch control is complicated and the work efficiency is low. At present, it is rare. use. [0003] In order to perform heat sealing during the continuous conveying process of the film, synchronous movement is generally adopted at present, that is, the movement of the heat-sealing device is the same as the film conveying direction and conveying speed, so that the heat-sealing device and the film are in a relatively static state. The corresponding heat-sealing action can be performed on the film, which makes the production process smoother and improves production efficiency. [0004] However, the above-mentione...

AI Technical Summary

Problems solved by technology

[0005] (1) It is difficult to achieve precise synchronization. Without synchronization, the heat-sealing device and the film move relatively, which reduces the heat-sealing quality, and this error will continue to accumulate. When the error exceeds the allowable range, it needs to be stopped and re-calibrated;

[0006] (2) The whole heat sealing device moves synchronously, which consumes a lot of energy;

[0007] (3) The heat sealing device itself needs actions such as lifting and translation, and needs an external power supply or air source, which greatly increases the complexity of the external structure of the processing equipment

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