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njectionmoldingInjectionmoldingisamanufacturingprocessforproducingpartsfromboththermo... njection molding
Injection molding is a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials. Material is fed into a heated barrel, mixed, and forced into a mold cavity where it cools and hardens to the configuration of the mold cavity. After a product is designed, usually by an industrial designer or an engineer, molds are made by a moldmaker (or toolmaker) from metal, usually either steel or aluminum, and precision-machined to form the features of the desired part. Injection molding is widely used for manufacturing a variety of parts, from the smallest component to entire body panels of cars.
History
The first man-made plastic was invented in Britain in 1861 by Alexander Parkes. He publicly demonstrated it at the 1862 International Exhibition in London, calling the material he produced "Parkesine." Derived from cellulose, Parkesine could be heated, molded, and retain its shape when cooled. It was, however, expensive to produce, prone to cracking, and highly flammable.
In 1868, American inventor John Wesley Hyatt developed a plastic material he named Celluloid, improving on Parkes' invention so that it could be processed into finished form. Together with his brother Isaiah, Hyatt patented the first injection molding machine in 1872. This machine was relatively simple compared to machines in use today. It worked like a large hypodermic needle, using a plunger to inject plastic through a heated cylinder into a mold. The industry progressed slowly over the years, producing products such as collar stays, buttons, and hair combs.
The industry expanded rapidly in the 1940s because World War II created a huge demand for inexpensive, mass-produced products. In 1946, American inventor James Watson Hendry built the first screw injection machine, which allowed much more precise control over the speed of injection and the quality of articles produced. This machine also allowed material to be mixed before injection, so that colored or recycled plastic could be added to virgin material and mixed thoroughly before being injected. Today screw injection machines account for the vast majority of all injection machines. In the 1970s, Hendry went on to develop the first gas-assisted injection molding process, which permitted the production of complex, hollow articles that cooled quickly. This greatly improved design flexibility as well as the strength and finish of manufactured parts while reducing production time, cost, weight and waste.
The plastic injection molding industry has evolved over the years from producing combs and buttons to producing a vast array of products for many industries including automotive, medical, aerospace, consumer products, toys, plumbing, packaging, and construction.
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2011-06-10
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njection成型
注塑成型是一种生产工艺生产零件都和热固性塑料热塑性材料。资料输入加热桶、混合,并迫使到模腔内的冷却,变硬,在模具型腔的配置。在一个产品设计,通常由一名工业设计师和工程师,模具是用一moldmaker(或机床维修工)从金属,通常要么钢或铝,并经过精密机加工,形成所需部位的特点。注塑广泛用于制造各种各样的部分,从最小到整个车体部件的汽车。
历史
第一颗人造塑料起源于英国在1861年亚历山大派克。他公开了在1862年国际展览在伦敦,称他“Parkesine材料产生。”来自Parkesine纤维素,可以加热,塑造及保留它的形状在冷却过程中。并且,这是昂贵的生产、易开裂,极易燃。
1868年的今天,美国发明家约翰卫斯理凯悦开发出一种塑胶材料、提高,他被命名为赛璐珞英军的发明,可以被加工成完成表格。以赛亚和他的哥哥一道,凯悦专利,在第一次注射成型机在1872年。这台机器是相对简单的机器相比,沿用至今。它的工作原理就像一个大针,使用一个柱塞皮下注射塑料通过加热缸成一个模子刻出来的。行业多年来一直进展缓慢,生产产品,如衣领停留,按钮,和发根。
工业迅速扩大在1940年代因第二次世界大战创造了巨大的需求为便宜,批量生产的产品。1946年的今天,美国发明家詹姆斯。沃森亨德利建造的第一个螺丝成型机,使得更加精确控制注射的速度和质量的文章产生的。这台机器还允许资料和注射前,这样的颜色
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njection模型

注塑成型是一种生产工艺生产零件都和热固性塑料热塑性材料。资料输入加热桶、混合,并迫使到模腔内的冷却,变硬,在模具型腔的配置。在一个产品设计,通常由一名工业设计师和工程师,模具是用一moldmaker(或机床维修工)从金属,通常要么钢或铝,并经过精密机加工,形成所需部位的特点。注塑广泛用于制造各种各样的部分,从最小到整个车体部件的汽车。

历史

第一颗人造塑料起源于英国在1861年亚历山大派克。他公开了在1862年国际展览在伦敦,称他“Parkesine材料产生。”来自Parkesine纤维素,可以加热,塑造及保留它的形状在冷却过程中。并且,这是昂贵的生产、易开裂,极易燃。

1868年的今天,美国发明家约翰卫斯理凯悦开发出一种塑胶材料、提高,他被命名为赛璐珞英军的发明,可以被加工成完成表格。以赛亚和他的哥哥一道,凯悦专利,在第一次注射成型机在1872年。这台机器是相对简单的机器相比,沿用至今。它的工作原理就像一个大针,使用一个柱塞皮下注射塑料通过加热缸成一个模子刻出来的。行业多年来一直进展缓慢,生产产品,如衣领停留,按钮,和发根。

工业迅速扩大在1940年代因第二次世界大战创造了巨大的需求为便宜,批量生产的产品。1946年的今天,美国发明家詹姆斯。沃森亨德利建造的第一个螺丝成型机,使得更加精确控制注射的速度和质量的文章产生的。这台机器还允许资料和注射前,所以,有色或回收塑料可以被加到原始资料和混合之前充分被注入。今天注塑机螺杆占了绝大的注塑机。在1970年代,亨德利出现了第一个气体辅助注射成型生产过程,允许这类复杂的中空的文章,快速冷却。这大大提高了设计的灵活性以及强度和完成零件的生产,降低生产时间、成本、体重和浪费。

塑料注塑行业在过去几年有生产梳子和按钮来生产大量的产品,为许多行业,包括汽车、医疗、航天、消费品、玩具、水暖、包装、和建设。
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