Integrated injection molding type PTC heater and preparation method thereof

A heater, all-in-one technology, applied in ohmic resistance heating, heating element materials, ohmic resistance heating parts and other directions, can solve problems such as increased labor hours, labor costs, low waterproof level of PTC heaters, and increased production costs, saving The cost of mold opening and the effect of solving the problem of waterproof and dustproof

Inactive Publication Date: 2019-11-22
安徽汇展热交换系统股份有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned method has the defect of high mold opening cost, which is likely to cause increased man-hours and labor costs, thereby increasing production costs; and the waterproof level of ordinary fixed PTC heaters is also low, which can only reach IP54

Method used

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  • Integrated injection molding type PTC heater and preparation method thereof

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Embodiment Construction

[0017] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0018] Such as figure 1 As shown, this embodiment provides an integral injection-molded PTC heater, including a PTC heating core 1 and a fixing plate 2, the PTC heating core 1 is arranged on the fixing plate 2, and the surroundings of the PTC heating core 1 and the fixing plate 2 A foamed silica gel 3 is provided, and the foamed silica gel 3 is integrally injection-molded with the PTC heating core 1 and the fixing plate 2 .

[0019] This embodiment also provides a method for preparing an integral injection-molded PTC heater, the steps of which are as follows:

[0020] Step 1: Clean the injection mold cavity, and spray liquid Teflon mold release agent in the injection mold cavity;

[002...

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Abstract

The invention provides an integrated injection molding type PTC heater and a preparation method thereof. The integrated injection molding type PTC heater comprises a PTC heating core and a fixing plate, the PTC heating core is arranged on the fixing plate, foaming silica gel is arranged around the PTC heating core and the fixing plate, and the foaming silica gel, the PTC heating core and the fixing plate are integrally formed through injection molding. According to the invention, the PTC heating core and the foamed silica gel are integrated through injection molding in an integrated injectionmolding mode, so that the procedure of manually screwing screws, nuts or rivets is omitted, the waterproof grade of the PTC heating core is improved through the silica gel, and the problems that the production cost of the PTC heater is increased and the waterproof grade is not high are solved.

Description

technical field [0001] The invention relates to the field of PTC heating, in particular to an integral injection molding PTC heater and a preparation method thereof. Background technique [0002] Nowadays, new energy vehicles have entered the eyes of millions of households. Due to their low energy consumption and environmental protection, they are becoming more and more popular among the public. At present, PTC heaters for new energy vehicles use screws and nuts for PTC heating cores. Or rivets, fixed to the box body or the mounting bracket, and then add a sponge to the outside of the box. However, the above-mentioned method has the disadvantage of high mold opening cost, which is likely to increase man-hours and labor costs, thereby increasing production costs; and the waterproof level of ordinary fixed PTC heaters is also low, which can only reach IP54. Therefore, it is particularly important to solve the problem that the production cost of the PTC heater is delivered and...

Claims

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Application Information

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IPC IPC(8): H05B3/04H05B3/14B29C45/14
CPCB29C45/14819H05B3/04H05B3/141
Inventor 赵灵君梅承全
Owner 安徽汇展热交换系统股份有限公司
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