摘 要:通过对钢球周转箱的材料、结构、质量要求、生产量分析，确定了合理的模具结构方案，分析了模具分型面、型腔数量及布置、浇注系统、排气方式、冷却系统，设计出型腔模、抽芯机构和脱模机构。加工组装模具后，选择合适的注射机，进行了生产验证，达到产品质量要求。

　　　分析了钢球周转箱塑件的结构特点，叙述了该塑件成型工艺、注射模的结构和工作原理，其原理是：用斜导柱外侧抽芯,型芯顶出零件,进料时采用点浇口进 料形式,当开模的时候,用拉料杆把浇注系统凝料顶出,然后利用型芯内推管推出塑件,合模时用弹簧先复位,然后进行下一次成型开始。提高了生产效率。 

关键词：注射模 ； 斜导柱 ； 侧抽芯 ； 型芯

ABSTRACT:Analyse the Gangqiu turnover box, configuration, quality, output of the enzyme box cover, choose the suitability mold plan, analyse the parting line, impression quantity and place in mold, gating system, vent gas type, cooling system, design cavity plate, angle pin side action, mould emptier,and so on. machining & assembling mold, choose the injection molding machine, do production test, it is to meet quality of the enzyme box cover. it is usefulness for stylist when design the alike product.

　　　Analyzed the structure characteristics of the perfume cover outer shell plastics piece， described the piece’s structure and work principle which model a craft and inject a mold， its principle ：adopt and certainly be apart from bolt and spring coil and carry on two cents type， use inclined lead a side outside the pillar and take out heart， type the heart crest spare parts， while entering and anticipating adoption incubate the type sprinkle into anticipate a form， while opening a mold， with the ball head pull and anticipate a pole sprinkle and note system and anticipate， then make use of and take out and push plank and release a plastics piece inside a heart，use spring coil and reset first while matching a mold， then carry on willing model a beginning next time.Raised to produce an efficiency.

Keyword：inject a mold； inclined to lead pillar；the side takes out heart；type heart