Paddle deicing heating sheet forming method
A molding method and heating sheet technology, which can be applied to other household appliances, household appliances, household components, etc., can solve problems such as breakdown failure and anti-deicing function failure, so as to improve the service life, ensure the anti-deicing function, and avoid easy exposure damaged effect
Inactive Publication Date: 2018-07-06
AVIC HUIYANG AVIATION PROPELLER
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- Application Information
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Problems solved by technology
After the blade electric anti-icing device has been used for a period of time, due to the harsh use environment, some electric anti-icing devices for blades will have a breakdown failure, resulting in the failure of the anti-icing function
Method used
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Embodiment Construction
[0020] The present invention will be described in further detail below.
[0021] Provided is a method for forming a paddle deicing heating sheet, the method is formed by a mould; the paddle deicing heating sheet includes upper and lower rubber layers and an electric heating wire in the middle; the mold surface of the mold has a curved surface;
[0022] Step 1. Lay the lower layer of raw rubber layer 1 and electric heating wire 2 successively on the mold surface. The electric heating wire is laid as the bending section corresponding to the bending profile; the electric heating wire before the bending section is the first section, and the bending section The electric heating wire after that is the second segment;
[0023] Step 2, wrapping the tinned copper braided sheath 3 on the electric heating wire of the first section;
[0024] Step 3, wrapping the vulcanized rubber layer 4 on the tinned copper braided sleeve;
[0025] Step 4, laying the upper raw rubber layer and covering...
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Abstract
The invention relates to a paddle deicing heating sheet forming method. The paddle deicing heating sheet forming method is a technology method that raw mixed rubber, a resistance wire, a tinned copperwoven sleeve and vulcanized rubber sheets are jointly subjected to vulcanization forming. The method is suitable for a paddle deicing electric heating device with a bending structure, damage of the resistance wire due to bending tension is avoided, meanwhile, the vulcanized rubber sheets are additionally arranged on the upper surface and the lower surface of the tinned copper woven sleeve, and exposure and damage of the tinned copper woven sleeve after co-vulcanization forming with the raw mixed rubber are avoided. By means of the forming method, the deicing function of a paddle electric icepreventing device is well guaranteed, and the service life of the paddle deicing electric heating device is prolonged.
Description
Technical field: [0001] The invention belongs to the structural optimization and improvement of composite material products, and relates to the structural optimization and improvement of an aircraft blade electric anti-icing device that needs anti-icing function. Background technique: [0002] A propeller electric anti-icing device used on aircraft, due to the particularity of its use: it has the function of anti-icing. It is required that the blade electric anti-icing device has a good anti-icing function under normal temperature and hot and humid environment. After the blade electric anti-icing device has been used for a period of time, due to the harsh use environment, breakdown failures will occur in individual blade electric anti-icing devices, resulting in failure of the anti-icing function. When the fault occurred, the rubber surface of the shoulder of the electric anti-icing device was punctured and damaged. Therefore, effective measures must be taken to prevent br...
Claims
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IPC IPC(8): B29C70/70B29C70/88B29L31/04
CPCB29C70/70B29C70/88B29L2031/087
Inventor 白金惠郑向东
Owner AVIC HUIYANG AVIATION PROPELLER