Winding-up and roll-replacing device of wide-width thin films

Abstract

A winding-up and roll-replacing device of wide-width thin films comprises a machine frame, wherein a left small swing arm, a right small swing arm and a small air cylinder are arranged on the machine frame, the small air cylinder drives the left small swing arm and the right small swing arm to swing, and the swing ends of the two small swing arms are respectively provided with a chuck which can be used for clamping a standard paper core tube; a film supporting plate is arranged below a cutter, a hole extending transversely is formed behind a cut groove of the film supporting plate, a lower clamping wheel is arranged at the position of the hole, and an upper clamping wheel is arranged above the lower clamping wheel; a large swing arm is arranged on the machine frame and can swing, a large air cylinder which can drive the large swing arm to swing is also arranged, the large air cylinder is a dual-stroke air cylinder having a first stroke and a second stroke, a piston rod of the large air cylinder is connected with the large swing arm, and small swing shafts of the small swing arms are arranged on the large swing arm; a first winding-up roll, a second winding-up roll, a winding-up roll support and a second motor are further arranged below the large swing arm. The winding-up and roll-replacing device is suitable for winding up the wide-width thin films, achieves high priming quality, has sufficient winding-up power, and has a high automation degree, and a film roll is clamped through the chucks easily.

Description

[0001] technical field [0002] The invention belongs to the technical field of film production equipment, and in particular relates to a wide-width film rewinding and changing device. Background technique [0003] Ordinary films can be rolled onto paper core tubes to form coils after being produced and formed. The surface of the paper core tubes used in the winding process is provided with adhesive materials. The outer diameter of the standard paper core tubes is 96-110mm. When the coiled film roll reaches the set diameter, the roll needs to be changed. The rewinding and changing equipment of ordinary film is a mature technology: there are two left and right chucks (such as air expansion chucks) on the left and right sides of the winding support, and there are also driving chucks to move along the axial direction of the paper core cylinder. The axial drive mechanism of the chuck, the chuck is also connected to the first motor to drive its rotation; when the roll is ready t...

AI Technical Summary

Problems solved by technology

[0005] 1. When laying the bottom, because the film has just been cut off, it loses the pulling force of the traction mechanism on the production line, and then loses the tension. In addition, because the width is too large, it is not easy to control the leading edge of the film to make it even, and it is not easy to make it even in a short time. Attaching the leading edge of the film to the surface of the paper core tube neatly makes it difficult to make a base when changing the roll, and the quality of the base is prone to problems, which in turn affects the quality of the subsequent coiling;

[0006] 2. Due to the large width and heavy weight of the film roll, the chucks at both ends of the film roll cannot bear the weight of the film roll, and it is difficult to clamp the film roll;

[0007] 3. Due to the large width and heavy weight of the film roll, the traditional power form of "center winding plus a pressure roller surface winding" appears to be insufficient in power and difficult to control the tension;

[0008] 4. Due to the heavy weight of the film roll, it is difficult to unload the film roll

[0009] Due to the above reasons, it is difficult to take the wide-width agricultural film to be rewound in the form of a paper core roll, but can only be folded and rewound.

Folding, also known as swinging, is not a real winding, such as figure 1 As shown, it is provided with a set of traction device 83 that can swing back and forth, and the formed film 81 is folded freely through traction, swinging back and forth, as figure 1 As shown by the arrow, the film 81 is loose and not dense after being folded, and the folding effect is not ideal. Farmers are not used to it in the actual use process.

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