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Preparation process of lampshade of car lamp

A preparation process and a technology for lamp shades, which are applied in the field of vehicle lamp shade manufacturing processes, can solve problems such as lack of practicability, unsuitable pressure and temperature, etc.

Inactive Publication Date: 2016-03-30
郑臣钏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Car lights are tools for vehicle lighting. They can be divided into front lights, rear lights, turn signals, license plate lights, etc. Car lights play an important role in the safe driving of vehicles. The light transmittance of car lamp shades And the anti-collision ability of the car lamp is also of great significance. For example, the patent No. 201310489615.0 discloses a method of manufacturing a car lamp for the present invention, which includes the following steps: (1) Preparation of the lampshade body: (2) The anti-collision tape Preparation; (3) Compounding of anti-collision tape and lampshade; (4) Lampshade coating: However, when this process is implemented again, it is not suitable for implementation, and the given pressure and temperature are not the most suitable. The invention also relates to a method for the production of planar, arched or flat, colored or colorless transparent elements (10) of lamps by means of a multi-component plastic injection process and by a plastic injection process with inserts , but there are few methods by further processing the lampshade in the production process, so as to prevent the collision of the lamp without affecting the appearance; the lampshade produced by the lampshade preparation process of the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Raw material preparation: 10kg of polyvinyl chloride, 35kg of PC plastic, 12kg of talcum powder, 8kg of acrylonitrile, 11kg of 1,3-butadiene and 21kg of styrene.

[0024] (2) Mixing molding: put polyvinyl chloride, PC plastic, talcum powder, acrylonitrile, 1,3-butadiene, parts by mass and styrene in a high-mixer and mix for 18, and add the obtained mixture to the twin-screw In the extruder, the twin-screw extruder was operated at 250° C. and 500 rpm to extrude particles after the mixture was melted.

[0025] (3) Drying: Place the granules in step (2) in an oven for 4 hours, and keep the temperature at 120°C during drying.

[0026] (4) Model preparation: Select a suitable model to prepare for injection molding according to the needs.

[0027] (5) Injection molding: Put the dried granules into the injection molding machine for injection molding to make the lampshade model.

[0028] (6) Cooling and demoulding: demoulding within 1 minute after injection molding is com...

Embodiment 2

[0036] (1) Preparation of raw materials: 11kg of polyvinyl chloride, 39kg of PC plastic, 13.5kg of talcum powder, 9kg of acrylonitrile, 13kg of 1,3-butadiene and 23kg of styrene.

[0037] (2) Mixing molding: Put polyvinyl chloride, PC plastic, talcum powder, acrylonitrile, 1,3-butadiene, parts by mass and styrene in a high-mixer and mix for 19 minutes, and add the obtained mixture to the twin-screw In the extruder, the twin-screw extruder was operated at 265° C. and 500 rpm to extrude particles after the mixture was melted.

[0038] (3) Drying: Place the granules in step (2) in an oven for 5 hours, and keep the temperature at 135°C during drying.

[0039] (4) Model preparation: Select a suitable model to prepare for injection molding according to the needs.

[0040] (5) Injection molding: Put the dried granules into the injection molding machine for injection molding to make the lampshade model.

[0041] (6) Cooling and demoulding: demoulding within 1.5 minutes after injecti...

Embodiment 3

[0049] A preparation process for a car lamp shade according to the present invention is characterized in that it comprises the following steps:

[0050] (1) Preparation of raw materials: 13kg of polyvinyl chloride, 43kg of PC plastic, 15kg of talcum powder, 10kg of acrylonitrile, 15kg of 1,3-butadiene and 25kg of styrene.

[0051] (2) Mixing molding: Put polyvinyl chloride, PC plastic, talcum powder, acrylonitrile, 1,3-butadiene, parts by mass and styrene in a high mixer and mix for 20 minutes, then add the obtained mixture to the twin-screw In the extruder, the twin-screw extruder was operated at 280° C. and 500 rpm to extrude particles after the mixture was melted.

[0052] (3) Drying: Place the granules in step (2) in an oven for 6 hours, and keep the temperature at 150°C during drying.

[0053] (4) Model preparation: Select a suitable model to prepare for injection molding according to the needs.

[0054] (5) Injection molding: Put the dried granules into the injection m...

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Abstract

The invention relates to a preparation process of a lampshade of a car lamp. The preparation process mainly comprises nine steps as follows: preparation of raw materials, mixing, forming, drying, mold preparation, injection molding, cooling for demolding, adhesive tape preparation, composition of an adhesive tape and the lampshade and film coating on the lampshade. Polyvinyl chloride has high light transmittance, a mixture of PC (polycarbonate) rubber and polyvinyl chloride rubber is taken as a material for manufacturing of the lampshade, the light transmittance of the car lamp can be improved, the irradiation brightness of the car lamp is increased, the formability of the car lamp is more natural and perfect with a secondary glue injection molding technology, a rubber anti-collision belt is added to the car lamp, the safety and anti-collision performance of the car lamp is increased, and titanium dioxide is added to the rubber anti-collision belt, so that the color of the rubber belt is close to that of the lampshade, the attractiveness is not affected, the existing problems are well solved, the brightness of the car lamp is increased, the safety performance is improved, and the service life of the car lamp is prolonged.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a preparation process for lampshades of automobile lamps. Background technique [0002] Car lights are tools for vehicle lighting. They can be divided into front lights, rear lights, turn signals, license plate lights, etc. Car lights play an important role in the safe driving of vehicles. The light transmittance of car lamp shades And the anti-collision ability of the car lamp is also of great significance. For example, the patent No. 201310489615.0 discloses a method of manufacturing a car lamp for the present invention, which includes the following steps: (1) Preparation of the lampshade body: (2) The anti-collision tape Preparation; (3) Compounding of anti-collision tape and lampshade; (4) Lampshade coating: However, when this process is implemented again, it is not suitable for implementation, and the given pressure and temperature are not the most suitable. The invention also rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L27/06C08L55/02C08K3/34C09J109/00B29C69/00C23C14/20
CPCC08L69/00B29C69/00C08K3/22C08K5/09C08K2003/2241C08L2205/03C09J109/00C23C14/20C08L27/06C08L55/02C08K3/34
Inventor 郑臣钏
Owner 郑臣钏
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