Electrical-steam PVC (polyvinyl chloride) plastic board local-heating device

Abstract

The invention discloses an electrical-steam PVC (polyvinyl chloride) plastic board local-heating device, which comprises a tank body (1), an infrared heating pipe (3) and wires (4). The device is characterized by also comprising a pipeline (2), wherein the pipeline (2) comprises a steam inlet pipeline (21), a heating pipeline (22) and a steam outlet pipeline (23); the heating pipeline (22) is arranged at the bottom of an inner cavity of the tank body (1); one end of the heating pipeline (22) is connected with the steam inlet pipeline (21), and the other end of the heating pipeline (22) is connected with the steam outlet pipeline (23); the steam inlet pipeline (21) and the steam outlet pipeline (23) are arranged outside the tank body; holes (11) are symmetrically formed in the left and right sides of the tank body (1); the left and right ends of the infrared heating pipe (3) are arranged in the holes (11) in the left and right sides of the tank body (1), and are close to the heating pipeline (22). The device is simple in structure, low in cost, safe and reliable, and has good heating effects, and heating modes are flexible.

Description

technical field [0001] The invention relates to plastic processing equipment, in particular to a local heating device for electric and steam dual-purpose PVC plastic boards. Background technique [0002] When bending the PVC sheet, firstly heat the part of the PVC plastic sheet that needs to be bent, and then send the heated PVC plastic sheet to a special bending machine for bending. Existing methods for heating the PVC plastic sheet The method is to use infrared heating tubes for heating. This heating method often has the following problems: if the heating temperature is too high, the surface of the PVC plastic board is easy to burn, which will affect the appearance at the slightest and be scrapped if the heating temperature is low; , The central part of the PVC plastic board cannot be heated through, resulting in quality problems such as cracking when it is bent. Contents of the invention [0003] The object of the present invention is to provide a local heating device ...

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Problems solved by technology

[0002] When bending the PVC sheet, the part to be bent of the PVC plastic sheet must be heated first, and then the heated PVC plastic sheet is sent to a special bending machine for bending. The method is to use infrared heating tubes for heating. This heating method often has the following problems: if the heating temperature is too high, the surface of the PVC plastic board is easy to burn, which will affect the appearance at the slightest and be scrapped if the heating temperature is low; , the central part of the PVC plastic board cannot be heated through, resulting in quality problems such as cracking when it is bent

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