Die-casting forming mold of music gift box baseplate

Abstract

The invention discloses a die-casting forming mold of a music gift box baseplate, comprising an upper plate (2) and a lower plate (6), an upper mold cylinder (12) and gear boxes (3). The gear boxes (3) are fixed at the top of the upper plate (2), and a plurality of thread pins (5) which can stretches into music gift box baseplate cavities (4) are connected in the gear boxes (3) in a rotary manner.The front ends of the thread pins (5) are positioned on thread holes (1) of the music gift box baseplate. The upper mold cylinder (12) is connected with the side of the upper plate (2), and a pistonrod (11) of the upper mold cylinder (12) is simultaneously connected with the thread pins (5) in the gear boxes (3) by a transmission mechanism. After adopting the above structure, the thread holes can be directly formed after die-casting forming, thus greatly increasing the production efficiency. Meanwhile, the position tolerance between the thread holes is ensured, thus improving the tone quality effect of the music gift box.

Description

technical field [0001] The invention relates to the field of die-casting moulds, in particular to a die-casting molding die for a musical instrument bottom plate obtained by using metal hot runner technology. Background technique [0002] Die casting is a method of casting. It is a casting method in which molten alloy liquid is poured into a pressure chamber, filled into the cavity of a steel mold at high speed, and the alloy liquid is solidified under pressure to form a casting. For example, the base plate in the octave is generally die-cast to form a semi-finished base plate, and then the semi-finished product is subjected to multiple processes such as car cutting, deburring by a punching machine, screw hole drilling, and soot blowing. Especially because the product profile of octave base plate itself is very little, and there are many threaded holes on the base plate, and the spacing between the threaded holes is also very little, therefore, the threaded hole processing o...

AI Technical Summary

Problems solved by technology

[0003] 1) Since many threaded holes on the bottom plate are manually operated, workers can only tap one by one, and the production efficiency is very low;

[0004] 2) At the same time, manual operation will inevitably lead to a large position tolerance of several threaded holes, which will cause uneven installation of parts on the bottom plate, which will cause poor sound quality of the octave

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