Manufacturing method for integral forming of aluminum alloy bicycle frame and mold for realizing the method

Abstract

The invention relates to an aluminum alloy bicycle frame integral forming production method and a mould for achieving same. According to the process method and the mould, a bicycle frame free of welded joint can be produced out and the potential risk caused by a welded joint can be eliminated. The aluminum alloy bicycle frame integral forming production method comprises separating an upper mould from a lower mould of the bicycle frame mould; placing a bicycle frame core in the bicycle frame lower mould chamber of the bicycle frame mould horizontally; casting an liquid bicycle frame aluminum alloy into the pressure chamber which is formed in the middle of the bicycle frame lower mould chamber of the bicycle frame mould, wherein the temperature of the liquid bicycle frame aluminum alloy is 50 to 120 DEG C higher than that of a bicycle frame aluminum alloy liquid line; closing the upper mould and the lower mould of the bicycle frame mould to form the integral bicycle frame mould chamber; separating the upper mould from the lower mould of the bicycle frame and taking out the bicycle frame and remaining materials after molten metal in the pressure chamber is driven by a pressure head to fill the integral bicycle frame mould chamber and is pressurized and solidified. According to the aluminum alloy bicycle frame integral forming production method, the bicycle frame core which is matched with the inner chamber of the bicycle frame is produced by soluble core materials, the bicycle frame mould chamber which is provided with the bicycle frame core is filled with the liquid bicycle frame aluminum alloy under the action of the pressure, cooling, solidification and forming are performed under the high pressure, the bicycle frame core which is wrapped inside is dissolved in water, and accordingly the hollow integral bicycle frame is formed.

Description

technical field [0001] The invention relates to an integral forming manufacturing method of an aluminum alloy bicycle frame. [0002] The invention also relates to a mold for realizing the integral forming manufacturing method of the aluminum alloy bicycle frame. Background technique [0003] With the improvement of people's living standards, the application field of bicycles has been extended from traditional means of transportation to leisure sports, especially the field of fitness. Its production materials are also developing from traditional cast iron and steel to lighter metal materials. Aluminum alloy bicycles have the characteristics of lightness and beauty. In recent years, they have become more and more sought after by the masses, especially sports enthusiasts. soared. In the prior art, the aluminum alloy bicycle frame basically all welds pipe fittings such as front pipe, middle pipe, lower pipe, flat fork, vertical fork, bottom bracket and so on to form an integr...

AI Technical Summary

Problems solved by technology

This process method produces many welded joints on the frame itself. The welded joints not only affect the overall aesthetics of the bicycle, but also through subsequent testing and use, it is found that the welded joints will bring safety hazards to riders

Chinese utility model patent 201020101149.6 discloses the idea of ​​adopting the die-casting method for the overall forming of the bicycle frame. The entire frame is divided into two parts, the front beam assembly and the rear beam assembly. Each part is formed by die-casting as a whole, and then the two parts are assembled together. , this method is only suitable for folding bicycles and cannot be used for forming the overall frame, and this method requires both the front beam and the rear beam to be "I"-shaped cross-sections, which is not beautiful enough and has low market acceptance

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