Heating structure of sealing machine

Abstract

The invention discloses a heating structure of a sealing machine, which comprises a heating body and joints, wherein the joints are connected to both ends of the heating body; the heating body comprises at least one heating strip; and the heating strip comprises a plurality of high-resistance blocks made of high-resistance electric heating wires. The heating structure of a sealing machine can be directly operated in a high-voltage value; the sealing machine using the heating structure can omit a transformer device, the volume and the weight of the sealing machine can be reduced, the structure is simpler, and the use and the carrying are more convenient; and specially, when the heating structure contains a plurality of heating strips, the heating and sealing effect is better, and the appearance is more attractive.

Description

technical field [0001] The invention relates to a heating structure, in particular to a heating structure used in a sealing machine. Background technique [0002] The heating structures used in existing sealing machines generally use straight resistance wires or electric heating bands. The resistance value of this shape of heating structures is relatively small, usually only about a few ohms, so it cannot be directly connected to high voltages such as 220V / 110V. It can only be connected to a voltage of about 20V. In order to make the heating structure work normally, a suitable transformer must be configured in the sealing machine, so that the voltage obtained after the incoming mains voltage is converted by the transformer matches the working voltage of the heating structure. . Although the above settings can solve the problem of voltage matching, the transformer will affect the production cost of the sealing machine on the one hand, and will greatly increase the overall vo...

AI Technical Summary

Problems solved by technology

[0002] The heating structures used in existing sealing machines generally use straight resistance wires or electric heating bands. The resistance value of this shape of heating structures is relatively small, usually only about a few ohms, so it cannot be directly connected to high voltages such as 220V / 110V. It can only be connected to a voltage of about 20V. In order to make the heating structure work normally, a suitable transformer must be configured in the sealing machine, so that the voltage obtained after the incoming mains voltage is converted by the transformer matches the working voltage of the heating structure.

Although the above settings can solve the problem of voltage matching, the transformer will affect the production cost of the sealing machine on the one hand, and will greatly increase the overall volume and weight of the sealing machine on the other hand, making the sealing machine inconvenient to use and carry; in addition , when the sealing machine is working, the heating structure will expand due to heat. This type of heating structure adopts a straight shape, so it will bend and elongate due to thermal expansion when working, and has the disadvantage of poor heating and sealing effect

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