Magnetic attraction type foreign matter removing device

Abstract

The invention belongs to the field of lamination machine feeding assisting equipment, and particularly relates to a magnetic attraction type foreign matter removing device. The device comprises magnetic attraction pipes made of metal materials. Containing cavities used for containing magnets are formed by pipe cavities of the magnetic attraction pipes. End portion sealing plates made of metal materials are arranged at the two ends of each magnetic attraction pipe. The two end portion sealing plates are parallel to each other, and the maximum distance between the two end portion sealing platesis equal to the width of a hopper outlet pipeline of a lamination machine so that the two end portion sealing plates can be attracted and fixed to the outer pipe wall of the hopper outlet pipeline through magnetic attraction force of the magnets. The magnetic attraction pipes are in a straight barrel pipe shape, the position of the outer pipe wall of each magnetic attraction pipe is coaxially sleeved with a cleaning ring capable of axially moving along the outer pipe wall. The inner ring face of each cleaning ring is provided with a felt layer or a gel layer which is attached to the outer pipewall of the corresponding magnetic attraction pipe. By means of the device, the function of filtering out metal type foreign matter in raw materials at the feeding end position of the lamination machine can be achieved, and accordingly the delivery quality of a machined film finished product is effectively guaranteed while the service life of the machine is ensured.

Description

technical field [0001] The invention belongs to the field of feeding auxiliary equipment for laminating machines, and in particular relates to a magnetic suction type foreign matter removal device. Background technique [0002] Extrusion casting compound machine, commonly known as laminating machine in the industry, has the advantages of high automation, easy operation, high production speed, uniform coating thickness, high adhesion fastness, smooth coiling, environmental protection and pollution-free, and labor-saving It has developed maturely in Europe and the United States, and has gradually become popular in China in recent years. It is an inevitable trend to replace dry lamination and hot melt adhesive coating lamination. The working principle of the laminating machine is: after the plastic particles are plasticized by high temperature and screw, they are extruded in a molten state from the die lip of the laminating head in a linear shape, and after stretching, they are...

AI Technical Summary

Problems solved by technology

In actual production, people found that the above-mentioned laminating machine often has the problem of metal foreign matter when extruding and laminating; through the search and analysis of the cause, it was found that the material feeding pipeline of the laminating machine did not have a filter device, resulting in plastic particles at the hopper The metal foreign matter trapped in the film will directly enter the screw through the melting channel of the screw extrusion structure, and then be extruded from the die lip of the coating head

The above-mentioned metal foreign matter, on the one hand, adheres to the surface of the flexible substrate after being stretched together with the molten plastic, resulting in quality defects such as bumps in the formed composite film, which seriously affects the quality of the finished product

On the other hand, metal particles entering the screw will also damage the screw, which shortens the maintenance cycle of the laminating machine sharply, and has to be shut down frequently for maintenance, resulting in immeasurable economic losses

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