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Method for manufacturing all-plastic bicycle frame

The technology of a bicycle frame and manufacturing method is applied in the field of bicycle frame manufacturing, which can solve problems such as insufficient strength, low aluminum elastic rate and rigidity, and large quality differences, and achieve high frame strength, good impact resistance, and light weight. Effect

Inactive Publication Date: 2011-05-18
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Disadvantages of aluminum alloy frame: Since aluminum is a material with low elasticity and rigidity, thick pipes are used, or the shape is changed such as cross-over pipe, padded pipe, etc. In addition, aluminum alloy frame must be heat treated, otherwise the strength is not enough , while generally small-scale factories cannot afford to purchase heat treatment equipment
Titanium frames are expensive for the above reasons
[0005] Disadvantages of carbon fiber: it is not so easy technically to give full play to the excellent performance of carbon fiber, and the quality difference between various carbon fiber material manufacturers is also large, and the price is expensive. Compared with titanium alloy, the price of carbon fiber frame is much higher And nothing less, the price of the top carbon fiber frame is tens of thousands

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Lead the continuous glass fiber from the creel and preheat it to 200°C, then introduce it into the impregnation die, impregnate the continuous fiber with molten nylon 66, and extrude the material with a single-screw extruder to control the glass fiber and The weight ratio of nylon 66 is 1:1, and then the impregnated continuous fiber is cooled to 25°C and pelletized to obtain continuous fiber reinforced thermoplastic resin long-fiber pellets;

[0028] (2) Import the long-fiber pellets into the bicycle frame mold for injection molding to obtain an all-plastic bicycle frame.

Embodiment 2

[0030] (1) Lead the aramid fiber from the creel and preheat it to 240°C and then introduce it into the impregnation die, and impregnate the continuous fiber with molten polyethylene terephthalate, polyethylene terephthalate Glycol ester contains additive antioxidant 1010 and PVC color masterbatch, the weight ratio of polyethylene terephthalate and additive is 1:0.01, the weight ratio of antioxidant 1010 and PVC color masterbatch is 1:1, adopt A single-screw extruder is used to extrude and feed materials, and the weight ratio of aromatic polyamide fibers to polyethylene terephthalate is controlled to be 1:0.5, and then the impregnated continuous fibers are cooled to 20°C and pelletized. Continuous fiber-reinforced thermoplastic resin long-fiber pellets can be obtained;

[0031] (2) Import the long-fiber pellets into the bicycle frame mold for injection molding to obtain an all-plastic bicycle frame.

Embodiment 3

[0033] (1) The basalt fiber is drawn from the creel and preheated to 265°C and then introduced into the impregnation die, and the continuous fiber is impregnated with molten acrylonitrile-butadiene-styrene copolymer (ABS), which contains additives Antistatic agent SH-105, graft modifier p-sulfonic acid methylaniline and anti-ultraviolet light stabilizer benzotriazole, the weight ratio of ABS to additive is 1:0.15, antistatic agent SH-105, p-sulfonic acid The weight ratio of methylaniline and benzotriazole is 1:0.5:0.8, and the twin-screw extruder is used to extrude the material, and the weight ratio of basalt fiber and ABS is controlled to be 1:3, and then the impregnated continuous fiber is cooled to Pelletize after 25°C to obtain continuous fiber-reinforced thermoplastic resin long-fiber pellets;

[0034] (2) Import the long-fiber pellets into the bicycle frame mold for injection molding to obtain an all-plastic bicycle frame.

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PUM

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Abstract

The invention relates to a method for manufacturing an all-plastic bicycle frame, which comprises the following steps of: leading continuous fibers out of a yarn stand, preheating to the temperature of between 200 and 300 DEG C, leading into a dipping former head, impregnating the continuous fibers by adopting molten resin, and cooling and granulating the impregnated continuous fibers to obtain continuous fiber reinforced thermoplastic resin long fiber pellets; and leading the long fiber pellets into a bicycle frame mould for injection molding to obtain the all-plastic bicycle frame. Compared with the prior art, the method has the advantages that: the all-plastic bicycle frame or a steel-plastic mixed bicycle frame can be directly obtained through cutting molding without welding; and plates are high in strength, light in weight, good in impact resistance and low in cost.

Description

technical field [0001] The invention relates to a method for manufacturing a bicycle frame, in particular to a method for manufacturing an all-plastic bicycle frame. Background technique [0002] Bicycle is a kind of commonly used means of transportation, how to produce safe, light, environment-friendly, cheap bicycle frame is an important issue that determines the development of this industry all the time. The materials used to make bicycle frames mainly include aluminum alloy, titanium / titanium alloy and carbon fiber. [0003] Disadvantages of aluminum alloy frame: Since aluminum is a material with low elasticity and rigidity, thick pipes are used, or the shape is changed such as cross-over pipe, padded pipe, etc. In addition, aluminum alloy frame must be heat treated, otherwise the strength is not enough , while generally small-scale factories cannot afford to purchase heat treatment equipment. [0004] The disadvantage of titanium alloy frame is that the price is too h...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29B9/00
Inventor 杨桂生
Owner HEFEI GENIUS NEW MATERIALS