Winding device of BOPP thin film

Abstract

The invention provides a winding device of a BOPP thin film, and belongs to the technical field of machines. The winding device solves the problems that in the prior art, the thin film needs to be manually cut off after being wound, and time and labor are wasted. The winding device of the BOPP thin film comprises a base and a first support arranged on the base; the first support comprises two stand columns; a winding shaft is arranged between the two stand columns, and a winding cylinder is arranged on the winding shaft; a power mechanism is arranged at one end of the winding shaft; a second support is arranged on the right side of the first support; the second support comprises a fixed plate; a clamping mechanism and a slitting blade are arranged on the fixed plate; the slitting blade is connected with a sliding mechanism which can drive the slitting blade to horizontally slide; a third support is arranged on the right side of the second support; the third support comprises two mounting plates; a tensioning mechanism which enables the thin film to be tensioned is arranged between the two mounting plates. According to the winding device, the aim that the thin film is cut off by the device after being wound can be achieved through the clamping mechanism.

Description

technical field [0001] The invention belongs to the technical field of machinery and relates to a winding device for BOPP film. Background technique [0002] BOPP film is the abbreviation of "Biaxially Oriented Polypropylene", that is, biaxially oriented polypropylene film. Its production is to melt and extrude the raw material of high molecular polypropylene through an extruder to form a melt, and then make a sheet or a thick film through a long and narrow head, and then in a special stretching machine, at a certain temperature and setting Stretching on vertical longitudinal stretching machine and transverse stretching machine simultaneously or step by step at a certain speed, and after proper cooling, heat treatment or special processing, it is made into a film, and then it is made into a film by tensioning and winding. Semi-finished products are finally cut into finished products of appropriate width using a slicer. [0003] In order to ensure the winding of film semi-f...

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Problems solved by technology

[0003] In order to ensure the winding of film semi-finished products at different speeds, the winding device needs a tension adjustment mechanism. In the BOPP film production line, the winding device of the extruder generally has the following two types. One is to use the mechanical structure to make the film winding drum However, due to the characteristics of thin film, easy to break and easy deformation, the winding of this kind of winding device can easily cause film breakage or film deformation; the other is electronic control, according to the state of the extruder , film output speed, temperature and other conditions to control the tension of the winding drum, but the cost of this control device is relatively high, which increases the production cost of the already expensive extruder, which is not conducive to the development of the industry

[0004] Moreover, in the existing film winding device, when the film winding is completed, the film is cut off manually to stop the continuous winding, which is time-consuming and labor-intensive, and the degree of automation is low; at the same time, the winding drum after winding cannot Guaranteed to have the same thickness

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