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Processing method for large-scale foaming decorating part

A processing method and technology for decorative parts, applied in the field of decorative parts processing, can solve the problems of high cavitation rate of molded products, imprecise walking positioning, foaming density, and large fluctuation of physical indicators of product apparent quality, etc. The effect of low vacancy rate, low vacancy rate and small fluctuation of foaming density

Active Publication Date: 2014-01-15
湖南亚太实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since there is no exhaust process in the process of the open foaming device of the air channel plate, the walking positioning is not accurate, the cavity rate of the molded product is high, and the physical indicators such as product foaming density and product appearance quality fluctuate greatly

Method used

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  • Processing method for large-scale foaming decorating part
  • Processing method for large-scale foaming decorating part
  • Processing method for large-scale foaming decorating part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Material preparation: combined polyether 50kg, material temperature 35°C, isocyanate (PM-200) 55kg, material temperature 35°C, alkali-free glass fiber 2400tex, 20kg, glass fiber bundle cut length 50mm, 0.8mm PVC leather fabric.

[0053] After being tested by the combined interior molding mold car of the present invention, the density of the air duct product is 0.58g / cm 3 , product thickness δ7.5mm, after testing, product transverse tensile strength 20.68Mpa, product longitudinal tensile strength 21.98Mpa; product transverse bending strength 23.97Mpa, product longitudinal bending strength 22.86Mpa; product impact strength 27.53kJ / m 2 , Flame retardant detection from the fire self-rest.

Embodiment 2

[0055] Material preparation: combined polyether 60kg, material temperature 42°C, isocyanate (PM-200) 60kg, material temperature 40°C, alkali-free glass fiber 2400tex, 40kg, glass fiber bundle cut length 50mm, 1.0mm PVC leather fabric.

[0056] After being tested by the combined interior molding mold car of the present invention, the product density of the air duct is 0.65g / cm 3 . , product thickness δ8.0mm, after testing, product transverse tensile strength 21.96Mpa, product longitudinal tensile strength 22.38Mpa; product transverse bending strength 25.52Mpa, product longitudinal bending strength 27.49Mpa; product impact strength 29.63kJ / m 2 , Flame retardant detection from the fire self-rest.

Embodiment 3

[0058] Material preparation: combined polyether 100kg, material temperature 42°C, isocyanate (PM-200) 105kg, material temperature 40°C, alkali-free glass fiber 2400tex, 75kg, glass fiber bundle cut lengths are 15mm, 25mm, 50mm, 1.0mmPVC leather fabric.

[0059] After being tested by the combined interior molding mold car of the present invention, the product density of the air duct is 0.62g / cm 3 . , product thickness δ8.5mm, after testing, product transverse tensile strength 25.52Mpa, product longitudinal tensile strength 26.39Mpa; product transverse bending strength 26.96Mpa, product longitudinal bending strength 28.56Mpa; product impact strength 31.25kJ / m 2 , Flame retardant detection from the fire self-rest.

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Abstract

The invention discloses a processing method for a large-scale foaming decorating part. The method comprises the following steps: the material in a mixing and batching system is conveyed to a robot casting system via a foaming system; the material is continuously cast into lower molds of a combined mold vehicle through the robot system; according to program instructions, the upper mold set of the combined mold vehicle automatically complete the actions of turning over molds, closing molds and locking molds of the upper mold set; after the polyurethane product in the mold cavity is subjected to precuring operation, according to the program control instructions, the upper mold set automatically opens the molds, and at least completes exhaust action once; after the exhaust time controlled by the program is over, the upper mold set automatically closes and locks the molds, and locks the molds according to the program until the product is completely cured. The processing method for the large-scale foaming decorating part has the advantages that the exhaust working procedure is realized, the traveling and positioning of the mold vehicle are accurate, the void fraction of the formed product is low, the manufacturing precision of the formed product is high, the foaming density fluctuation of the product is low, and the physical index is high.

Description

technical field [0001] The invention relates to a method for processing a decorative part, in particular to a method for processing a large-scale foamed decorative part. Background technique [0002] At present, interior products such as air duct panels and roof panels for automobiles and rail transit are 4 to 12 meters in length. Interior products made of glass fiber reinforced polyurethane are light in weight, have good weather resistance, and are not easy to deform at high temperatures. However, mixed materials such as glass fiber and polyurethane Due to the limitation of milk white time (about 30 seconds) and curing time, the production of long air duct boards, roof boards and other products requires continuous pouring of glass fiber, polyurethane and other mixed materials in the mold, and the general pouring time takes 70 to 150 seconds to complete Usually, the glass fiber, polyurethane and other mixed materials in the later stage have not been poured yet, and the glass...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/02B29C44/40B29C44/58B29C44/60
Inventor 董升顺常雪舢谢胜辉
Owner 湖南亚太实业有限公司
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