Coating machine unwinding device capable of automatically regulating coating tightness

Abstract

The invention discloses a coating machine unwinding device capable of automatically regulating coating tightness. The coating machine unwinding device comprises an unwinding frame and double unwinding heads, wherein a slewing bearing and a chuck regulating block are fixedly mounted on the upper surface of the unwinding frame, infrared sensors are further fixedly mounted at the two ends of the slewing bearing, a limiting mechanism is further mounted on the right side surface of the unwinding frame, a sliding plate limiting shaft is fixedly mounted at the upper end of the limiting mechanism, a sliding plate is further mounted at the bottom end of the sliding plate limiting shaft, the sliding plate is fixedly connected to the upper end of a pull rod through a reset spring, the other end of the pull rod is fixedly connected with an electric controller, and a power supply device is further fixedly mounted in the unwinding frame; and the double unwinding heads are fixed to the upper surface of an operation platform through rotating blocks mounted on the inner sides of the double unwinding heads, and unwinding disc mechanisms are further fixedly mounted at the two ends of the operation platform. By arranging a special unwinding motor to drive an unwinding main shaft to rotate, material unwinding is realized, and control is convenient and reliable. At the same time, the work efficiency is greatly increased by double-head unwinding.

Description

technical field [0001] The invention relates to the technical field of unwinding devices for coating machines, in particular to an unwinding device for coating machines that automatically adjusts the tightness of cloth. Background technique [0002] As one of the basic components of microchannel heat exchangers, fins are widely used in various devices that require heat exchangers such as automobiles, aerospace, and microelectronics. Good or bad directly affects the production quality and working performance of the fins, and the unwinding device of the aluminum foil coil, as the first production link in the production process of the fin machine, has an important impact on the working performance of the entire equipment. [0003] The traditional unwinding device adopts passive unwinding, that is, the main winding roller or the main machine in the next process provides power to pull the aluminum foil out of the unwinding frame. At this time, a certain braking torque needs to be...

AI Technical Summary

Problems solved by technology

[0003] The traditional unwinding device adopts passive unwinding, that is, the main winding roller or the main machine in the next process provides power to pull the aluminum foil out of the unwinding frame. At this time, a certain braking torque needs to be added to the unwinding shaft. Generally, it is provided by a magnetic powder brake. The disadvantage of this design is that it is difficult to adjust the output torque of the magnetic powder brake, and it is easy to cause excessive stretching or even breaking of the aluminum foil material.

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