In order to solve the technical problem that the long convex column is easy to deform during demoulding, the utility model provides a demoulding mechanism for forming the convex column of a plastic part. The mechanism comprises a slide block, a stop block, a driving cylinder and a power source, the driving cylinder and the stop block are respectively located on both sides of the slide block, the power source drives the slide block to move away from or close to the stop block; the driving cylinder comprises an inner needle, an outer needle, an inner needle seat, an outer needle seat and a spring, the slide block is provided with a sliding groove, the spring and the outer needle seat are installed in the sliding groove, and a straight end surface of the outer needle seat butts against the straight end of the stop block The spring is compressed on the surface, the inner needle seat is fixed in the sliding block, the inner needle is penetrated in the outer needle, the inner needle is fixedly connected with the inner needle seat, the outer needle is fixedly connected with the outer needle seat, the inner hole of the inner needle forming convex post and the end face of the outer needle forming convex post, when the inner needle is separated from the inner hole of the convex post for demoulding, the outer needle always presses the end face of the convex post to prevent the convex post from being pulled up by the inner needle, reducing the deformation of the convex post.
【技术实现步骤摘要】
一种塑件凸柱成型脱模机构
本技术涉及注塑模具
,尤其是涉及注塑模具中的塑件凸柱成型脱模机构。
技术介绍
凸柱是家电、汽车内外饰塑件上的常见装配结构,主要起到定位和紧固作用,如果凸柱位于塑件的侧部,则需要在成型模具中增加滑块脱模机构,并将成型凸柱的镶针固定于滑块中,在塑件顶出之前,滑块脱模机构将镶件从凸柱中抽出实现脱模,但是这种成型脱模方式却不适于长凸柱,因为长凸柱的抱紧力大,镶针会与凸柱黏连,容易造成凸柱变形。
技术实现思路
本技术所要解决的技术问题是:防止凸柱在脱模过程中变形。为解决上述技术问题,本技术采用的技术方案如下:一种塑件凸柱成型脱模机构,包括滑块、挡块、司筒和动力源,所述司筒和所述挡块分别位于所述滑块的两侧,所述动力源带动所述滑块向远离或者靠近所述挡块的方向移动;所述司筒包括内针、外针、内针座、外针座和弹簧,所述滑块中设置有滑槽,所述弹簧和所述外针座安装在所述滑槽内,所述外针座的一个直端面抵接在所述挡块的直端面上使所述弹簧压缩,所述内针座固定于所述滑块中,所述内针穿设在所述外针内,所述内针与所述内针座固连,所述外针与所述外针座固连。在制件注塑成型状态下,滑块远离挡块,外针座的直端面抵接在挡块的直端面上,弹簧被压缩;在模具打开的初级阶段,挡块随母模向远离公模的方向移动,动力源带动滑块逐渐向挡块靠近,内针随滑块一起运动并逐渐从凸柱的内孔中抽离,由于外针座与挡块是直面接触,在挡块脱离外针座之前,外针相对于塑件保持不动,外针的成型端面一直压住凸柱的外端面;当外针座脱离 ...
【技术保护点】
1.一种塑件凸柱成型脱模机构,包括滑块(10)、挡块(20)、司筒和动力源,所述司筒和所述挡块(20)分别位于所述滑块(10)的两侧,所述动力源带动所述滑块(10)向远离或者靠近所述挡块(20)的方向移动,其特征在于,所述司筒包括内针(31)、外针(32)、内针座(33)、外针座(34)和弹簧(35),所述滑块(10)中设置有滑槽(11),所述弹簧(35)和所述外针座(34)安装在所述滑槽(11)内,所述外针座(34)的一个直端面抵接在所述挡块(20)的直端面上使所述弹簧(35)压缩,所述内针座(33)固定于所述滑块(10)中,所述内针(31)穿设在所述外针(32)内,所述内针(31)与所述内针座(33)固连,所述外针(32)与所述外针座(34)固连。/n
【技术特征摘要】
1.一种塑件凸柱成型脱模机构,包括滑块(10)、挡块(20)、司筒和动力源,所述司筒和所述挡块(20)分别位于所述滑块(10)的两侧,所述动力源带动所述滑块(10)向远离或者靠近所述挡块(20)的方向移动,其特征在于,所述司筒包括内针(31)、外针(32)、内针座(33)、外针座(34)和弹簧(35),所述滑块(10)中设置有滑槽(11),所述弹簧(35)和所述外针座(34)安装在所述滑槽(11)内,所述外针座(34)的一个直端面抵接在所述挡块(20)的直端面上使所述弹簧(35)压缩,所述内针座(33)固定于所述滑块(10)中,所述内针(31)穿设在所述外针(32)内,所述内针(31)与所述内针座(33)固连,所述外针(32)与所述外针座(34)固连。
2.根据权利要求1所述的一种塑件凸柱成型脱模机构,其特征在于,所述外针座(34)中设置有导向槽(341),所述内针座(33)插设于所述导向槽(341)中。
3.根据权利要求1所述的一种塑件凸柱成型脱模机构,其特征在于,所述外针座(34...
【专利技术属性】
技术研发人员:熊友家,
申请(专利权)人:苏州爱福特精密模具有限公司,
类型:新型
国别省市:江苏;32
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