Manufacturing method of automotive trim static board
A technology for automotive interiors and manufacturing methods, which is applied in the field of manufacturing mute panels for automotive interiors. It can solve the problems of high cost per piece and heavy weight per piece, and achieve the effects of improving performance, reducing materials used, and smooth appearance
Inactive Publication Date: 2018-12-18
SAIC GENERAL MOTORS +1
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Problems solved by technology
[0004] Due to the material and the corresponding manufacturing method of the existing sound-absorbing panel, its single weight is relatively heavy, and its single-piece cost is relatively high
Method used
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[0026] In the following, the technical solution of the method for manufacturing an automotive interior sound-absorbing panel proposed by one aspect of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
[0027] According to a method for manufacturing a sound-absorbing panel for automobile interior decoration proposed by an embodiment of the present invention, PP material is used as a preparation raw material, and the sound-absorbing panel is prepared by a thin-walled injection molding method.
[0028] The method parameters involved in the embodiment include: melt temperature of 260 degrees Celsius, mold temperature of 60 degrees Celsius, holding pressure of 80% filling pressure, injection pipe diameter of 10mm, gate diameter of 2.5mm, and filling time of 1.5s. The pressure when the injection speed / pressure is switched is 64.64Mpa. If the pressure is too high at this time, the parts are prone to flashing, and th...
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Abstract
The invention discloses a manufacturing method of an automotive trim static board. The manufacturing method of the automotive trim static board adopts PP raw materials and utilizes a thin-walled injection molding method to prepare the static board, and the wall thickness of the prepared static board is 0.8-2 mm. As for method parameters referring to the thin-walled injection molding method, the diameter of an injection molding pipeline is 8-15 mm, the gate diameter is 2-3 mm, the filling time is 1.2-1.8 seconds, the holding pressure is 75-85% of the filling pressure, the pressure during switching of the injection molding speed and the injection molding pressure is 60-70 Mpa, the melt temperature is 200-280 DEG C, and the mold temperature is 40-80 DEG C. The trim static board prepared through the manufacturing method of the automotive trim static board is low in one-piece weight and low in cost while meeting the performance requirement.
Description
technical field [0001] The invention relates to the field of automotive interior components, in particular to a method for manufacturing a silent panel for automotive interiors. Background technique [0002] At present, in the interior of general B-class cars, silent trims will be set to improve the perceived quality of the car interior. In addition to decorating and covering parts such as electronic wiring harness and pedals, the sound-absorbing panel in the sound-absorbing trim also provides support and attachment for the sound-absorbing cotton to reduce the noise in the car. [0003] see image 3 As shown, the sound-absorbing panel 30 commonly used in the industry is generally made of plastic material, its wall thickness is generally 2.5mm~3.0mm, its overall size is about 400mmX610mm, and its weight is about 350g. The sound-absorbing cotton 20 is arranged on it. This sound-absorbing panel 30 and the sound-absorbing cotton 20 arranged thereon are generally arranged on the...
Claims
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IPC IPC(8): B29C45/76B29C45/78B29C45/77B29C45/27B29L31/30
CPCB29C45/27B29C45/2708B29C45/76B29C45/77B29C45/78B29C2945/76498B29C2945/76531B29C2945/76585B29L2031/3005
Inventor 程世奇
Owner SAIC GENERAL MOTORS