Double-winding arm and film pre-stretching unit

Abstract

The invention discloses a double-winding arm and a film pre-stretching unit. The double-winding arm comprises two sets of frame structural parts, wherein a threaded rod is arranged in a through hole in a penetrating mode, a weighing plate comprises a weighing sensor chip, and a protruding column is fixedly arranged on the weighing plate; the distances between the center of the cleaning column andthe centers of a first guide post , a second guide post and a third guide post are equal; and a circular truncated cone is fixedly arranged at the output end of a hydraulic cylinder, the radius of oneend, away from the hydraulic cylinder, of the circular truncated cone is gradually decreased, a trigger block is fixedly arranged on the side face of the circular truncated cone, three strip-shaped grooves are arranged in the side wall of the cleaning column, and a banister brush is fixedly arranged on a brush bearing plate. According to the double-winding arm and the film pre-stretching unit, afilm roll can be fixed more conveniently and quickly, the cleaning operation on the guide posts can be automatically conducted while the film roll is manually fixed, the film can be directly pulled out for stretching after the film is manually fixed, waiting is not needed, and the simplicity and high efficiency are achieved.

Description

technical field [0001] The invention relates to the technical field of film winding, in particular to a double winding arm and a film pre-stretching unit. Background technique [0002] In the prior art, a fixed cantilever winding machine with the application number "201921403686.3" includes a fixed plate, a convenient moving mechanism, an L-shaped fixed column, a moving mechanism, a C-shaped plate, a limit mechanism and a U-shaped bar; the fixed plate There are mounting studs on the top, and the left side of the upper surface of the fixed plate is connected with a rotating disk through a bearing; the moving mechanism is set on the right side of the upper surface of the fixed plate; the L-shaped fixed column is installed on the moving mechanism; the moving mechanism is set on the L The C-shaped plate is installed on the moving mechanism; the limit mechanism is set on the L-shaped fixed column, and the C-shaped plate is assembled on the limit mechanism; the fixed cantilever wi...

AI Technical Summary

Problems solved by technology

[0003] However, there are still relatively obvious defects in its use: 1. The placement mechanism of the above-mentioned film roll includes a clamping strip, an insertion rod and a connecting plate, the insertion rod is arranged on the connecting plate, and the clamping strip is detachably assembled on the insertion rod , the packaging film roll is limited by the clip. It can be seen that the position of the insertion rod is not easy to adjust. It is difficult to replace the film roll easily and quickly when installing the film roll and removing the core after use, which affects work efficiency; 2. The above device There is a lack of a structure for pre-unfolding the film in the film. If the film is directly pulled out from the film roll, it will often cause problems such as film shrinkage due to poor rotation of the film roll, improper pulling angle, and prone to stop, pull and breakage. Therefore, It is difficult to guarantee long-term stable operation

Images