Heating coil for extruder material barrel and preparation method of heating coil

Abstract

The invention discloses a heating coil for an extruder material barrel. The heating coil for the extruder material barrel comprises a heating coil body, inserting pieces and a connector, wherein the inserting pieces are respectively arranged at two ends of the heating coil body, the connector is used for being connected with the inserting pieces in an inserting mode, and a high-temperature-resistant spring piece which is used for reinforcing contact and fixing the inserting pieces is further arranged inside the connector. According to the preparation method, the heating coil is manufactured into a heating coil body of different specifications according the difference of the diameters of the extruder material barrels, insulation layers in the positions 1-2 cm far away from two ends of the heating coil body are peeled off, the inserting pieces are arranged in the positions, where the insulation layers are peeled off, of two ends of the heating coil body, high-temperature-resistant heat-shrinking tubes are sleeved in the positions where the inserting pieces and the heating coil body are connected, the high-temperature-resistant heat-shrinking tubes are heated to contract and wrap the connection positions tightly, the high-temperature-resistant spring piece is arranged in the connector in advance, then the inserting pieces are inserted into the connector provided with the high-temperature-resistant spring piece, and the spiral heating coil is formed. The heating coil for the extruder material barrel has the advantages of being simple and convenient to install on the extruder material barrel, convenient to detach from the extruder material barrel so that a user can install and detach the heating coil conveniently, and the heating coil for the extruder material barrel meets the requirements of sensing heating standardization and large-scale production.

Description

technical field [0001] The invention belongs to the field of electrical equipment and electrical engineering, and in particular relates to an electromagnetic induction heating coil for an extrusion barrel. Background technique [0002] At present, in the induction heating installation, there are the following ways: [0003] (1) Surrounding the heated body with a helical coil, this installation method has the advantage of uniform heating, but there are many installation parameters, troublesome installation and disassembly, high installation and maintenance costs, and it is not conducive to large-scale promotion and application; [0004] (2) Wind the wire into an elliptical heating plate and then bend it into an open heating coil. This installation method has the advantage of easy installation, but the heating is uneven, the coil is easy to heat up, and it will affect the life of the induction heating main board. Contents of the invention [0005] The technical problem to b...

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Problems solved by technology

[0003] (1) Surrounding the heated body with a helical coil, this installation method has the advantage of uniform heating, but there are many installation parameters, troublesome installation and disassembly, high installation and maintenance costs, and it is not conducive to large-scale promotion and application;

[0004] (2) Wind the wire into an oval heating plate and then bend it into an open heating coil. This installation method has the advantage of convenient installation, but the heating is uneven, and the coil is easy to heat up, which will affect the life of the induction heating main board.

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