Circulating heating roller with inner spiral roller and heating method

Abstract

The invention relates to a cyclic heating roller with an internal spiral roller as well as a heating method, and belongs to the technical field of film laminating machines. The technical scheme is that the cyclic heating roller with the internal spiral roller comprises a metal hose, a rotary joint (4), a siphoning pipe (5), an external spiral roller (2), a water guide pipe (3) and an outer roller (1), wherein a multi-head thread with equal thread pitches is adopted as the outer thread of the external spiral roller (2); cross sectional areas of multiple spiral grooves of the multi-head thread are just equal to the cross sectional area of a hot water outlet of a mold temperature machine, so that the cyclic pressure of the whole system is consistent; the outer surface of the external spiral roller and the inner surface of the outer roller are fit mutually so as to form fit steel rollers. The fit steel rollers are rapid in surface temperature rise, rapid in hot water circulation; not matter whether waterborne dry-type film lamination or film precoating is adopted, after rollers are touched, glue on the rollers can be completely fused instantly, so that the rollers are completely fitted with a piece of paper, and the fitting is firm, the brightness is high, and snowflake air bubbles are not generated; moreover, the cyclic heating roller is energy-saving and efficient, compared with similar products, the electricity consumption is reduced by more than 15%, and the processing cost is integrally reduced.

Description

technical field [0001] The invention relates to a circulating heating roller with an inner spiral roller and a heating method, in particular to a laminating heating steel roller and a heating method of a water-based dry laminating machine and a pre-coating film laminating machine, and belongs to the technical field of laminating machines. Background technique [0002] At present, there are two ways for the internal heating structure of the laminated steel roller commonly used by people. One is to use a high-power heating tube inside the roller, and there is a heat-conducting oil tank on the outside. Filled with heat transfer oil, the heating tube is immersed in the heat transfer oil, and the heat transfer oil is heated to the set temperature after the heating tube is heated. The disadvantage of this heating method is: the heat transfer oil will emit a smell after being heated, which will affect the environment and not save energy. Another structure is the inside of the rolle...

AI Technical Summary

Problems solved by technology

[0002] At present, there are two ways for the internal heating structure of the laminated steel roller commonly used by people. One is to use a high-power heating tube inside the roller, and there is a heat-conducting oil tank on the outside. Full of heat transfer oil, the heating tube is immersed in the heat transfer oil, and the heat transfer oil is heated to the set temperature after the heating tube is heated. The disadvantage of this heating method is: the heat transfer oil will emit a smell after being heated, which will affect the environment and not save energy.

Another structure is the inside of the roller, plus an inner roller. This heating method can be filled with water or heat transfer oil. The disadvantage is that the circulation speed of water or oil is slow, and it will stay inside the roller, causing the surface temperature of the roller to increase. Unstable, low return water temperature directly affects the laminating speed and film quality of the machine

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