BOPP film winding device

Abstract

The invention discloses a BOPP film winding device. The BOPP film winding device comprises a working table, a supporting frame, a winding mechanism, a compressing mechanism, a cut-off mechanism, a control mechanism and undertaking rollers, the winding device comprises two fixing shafts, a winding roller is arranged between the two fixing shafts, the compressing mechanism comprises a compressing roller, the two ends of the compressing mechanism are connected with expansion rods with expansion springs, and the control mechanism is a control box; according to the BOPP film winding device, the winding roller can belocked through arranging fixing protrusions arranged in a cross shape on the fixing shafts, and the winding roller is compressed between the fixing protrusions and a fixing sleeve ring through the action of a spring, so that wobble of the winding roller is avoided in the winding process; the compressing roller is compressed on the winding roller through the action of the expansion springs, so that the winded BOPP film is closely connected between layers, and loosing cannot occur; a moving pressing plate and a fixing pressing plate compress the BOPP film together while an electric sliding block on an electric sliding rail moves, and a cutting device is driven to move left and right and cut the BOPP film, so that the automatic cutting off is conducted.

Description

Technical field [0001] The invention relates to the technical field of BOPP film production equipment, in particular to a BOPP film winding device. Background technique [0002] BOPP is the abbreviation of "Biaxially Oriented Polypropylene", BOPP film is biaxially oriented polypropylene film. [0003] The production of BOPP film is to first pass the melt of high molecular polypropylene into a sheet or thick film through a long and narrow machine head, and then in a special stretching machine, at a certain temperature and a set speed, simultaneously or step by step The film is stretched in two vertical directions (longitudinal and transverse), and after appropriate cooling or heat treatment or special processing (such as corona, coating, etc.). [0004] In order to ensure the winding of the film semi-finished products at different speeds, the winding device needs a tension adjustment mechanism. In the BOPP film production line, the extruder winding device generally has the following ...

AI Technical Summary

Problems solved by technology

[0004] 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

[0005] 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

Images