Synchronization biaxial orientation stretching machine track mechanism with controllable chain clamp trajectory direction

Abstract

The invention discloses a synchronization biaxial orientation stretching machine track mechanism with a controllable chain clamp trajectory direction. The synchronization biaxial orientation stretching machine track mechanism comprises a track, a chain clamp system and a drive chain wheel, wherein the chain clamp system is arranged in the track, and the drive chain wheel is arranged at one end of the inner side of the track. Compared with the prior art, the synchronization biaxial orientation stretching machine track mechanism with the controllable chain clamp trajectory direction has the advantages that through the shape change of a groove in the track, the movement trajectory of a chain clamp mechanism is adjusted to realize changes of the distance between film clamps and the speed, the spacing between the film clamps is changed from small to large so that the longitudinally tensioning between two film clamps is realized; meanwhile, through changing the spacing between guide rails, the position of a connecting shaft is adjusted to drive a chain clamp so that the horizontal tensioning of films is realized. The synchronization biaxial orientation stretching machine track mechanism with the controllable chain clamp trajectory direction is capable of simultaneously realizing horizontal and longitudinal constant-speed tensioning of the films; the problem of instability of physical properties such as non-uniformity of tensioning thickness and non-uniformity of strengths of all parts of the films, which are possibly caused in a conventional process, is solved.

Description

technical field [0001] The invention relates to a track mechanism of a synchronous bidirectional stretching machine with controllable chain clip track direction. Background technique [0002] "Biaxial stretching" is one of the plastic film forming methods that have attracted much attention in recent years. The use of biaxial stretching technology can significantly improve the mechanical properties, barrier properties, optical properties, thermal properties and thickness uniformity of the film, which can meet various requirements. The production requirements of the application area. [0003] The basic principle of the plastic film biaxial stretching technology is: after the high polymer raw material is heated and melted by the extruder and extruded into a thick sheet, it passes When the stretching machine is under the action of external force, it is stretched to a certain multiple along the horizontal and vertical directions at the same time, so that the molecular chains or ...

AI Technical Summary

Problems solved by technology

[0006] At present, linear motor stretching mechanism can be used, and the stretching mechanism of many linear motors can realize flexible speed regulation, so the stretching ratio can be adjusted flexibly, but the equipment manufacturing cost of this method is high, and a lot of expenses are required for daily maintenance

Images