A kind of Teflon coating composite glue filling mold and glue filling method
A Teflon and coating technology, used in the field of glue filling of inertial instrument components, can solve the problems of short life and low pass rate, and achieve the effect of high coating durability, good thermal stability and long service life.
Active Publication Date: 2017-05-31
北京兴华机械厂有限公司
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Problems solved by technology
[0005] The technical problem solved by the present invention is: to overcome the defects of low qualified rate of high-precision potting and short life of polytetrafluoroethylene potting molds in the existing potting process technology, and provide a high-positioning, shape-setting precision, and long-life Teflon Long coating compound glue filling mold, realize glue filling size accuracy less than 0.05mm, shape and position accuracy less than 0.06mm, life expectancy greater than 300 hours
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Embodiment 2
[0044] Figure 4a It is the schematic diagram of the second application of the present invention. This kind of mold is a thin-walled structure, and it is easy to deform during the process of spraying Teflon coating at high temperature (120-180 ° C), so the base 1, the sleeve 9, and the mandrel 7 The metal base is made of stainless steel to prevent high temperature deformation. Install the inner hole of the sensor stator 5 on the base 1, then place the mandrel 7 on the base 1 in sequence, and tighten the compression nut 6. The sleeve 9 and the base 1 are positioned together and pressed against the end face of the core of the sensor stator 5 at the same time. The plug 2 (the center has a small hole) and the ejection plug 3 (the center has no hole) are installed on the base 1, and the lead wire 4 is drawn out from the outlet plug. The outlet plug 2 is made of polytetrafluoroethylene material, which is used in combination with the metal material at the position of the threading h...
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Abstract
The invention relates to a teflon coating composite glue pouring die and method. Metal matrixes are adopted in the glue pouring die. Teflon coatings are sprayed to the glue touch faces of the metal matrixes. The characteristics that the die is resistant to adhesion, low in osmosis and creep and smooth in surface are combined with the characteristics of metal, nonmetal and other various materials. Furthermore, part outgoing lines can be smoothly led out through petal-shaped through holes or outgoing line plugs. By means of the glue pouring method, the glue pouring dimensional accuracy is smaller than 0.05 mm; and the form and position accuracy is smaller than 0.06 mm, and the service life is longer than 300 hours. Accuracy and reliability are both greatly improved. A brand-new thought is provided for material selection of the glue pouring die.
Description
technical field [0001] The invention relates to a Teflon-coated compound glue-filling mold and a glue-filling method, belonging to the field of glue-filling of inertial instrument components. Background technique [0002] The adhesive layer of the static pressure liquid floating gyro dynamic pressure motor stator winding parts requires one-time potting and molding. In order to ensure the uniform air pressure inside the motor, the coaxiality between the adhesive layer and the inner hole of the iron core is required to be 0.06mm (such as figure 1 ). The coaxiality of the PTFE glue filling mold is 0.2mm, the inner tapered rubber layer cannot be processed, and the risk of missing lines during turning of the outer rubber layer of 0.2mm is very high. [0003] Three-floating gyro angle sensor sensor stator (eg figure 2 ) Adhesive layer size are important assembly dimensions. The size error of the PTFE glue potting mold is 0.2mm, the size of the lead-out glue layer is guarante...
Claims
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IPC IPC(8): B29C39/26B29C39/10
Inventor 麻剑平周赟刘德亮廖世宾于明张勇张纱
Owner 北京兴华机械厂有限公司