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注塑模具浇注系统设计原则

来源:http://www.schaosen.com 日期:2021-05-19 发布人:liqiang 浏览次数:
浇注系统的设计是注塑模具设计的一个重要环节,它对注塑成型周期和塑件质量(如外观、物理性能、尺寸精度等)都有直接影响。
The design of gating system is an important part of injection mold design, which has a direct impact on the injection molding cycle and the quality of plastic parts (such as appearance, physical properties, dimensional accuracy, etc.).
设须遵循如下原则
The design should follow the following principles
(1)型腔布置和浇口开设部位力求对称,防止模具承受偏载而产生溢料现象。
(1) The layout of cavity and the position of gate should be symmetrical to prevent the overflow caused by eccentric load.
(2)型腔和浇口的排列要尽可能地减少模具外形尺寸。
(2) The arrangement of mold cavity and gate should reduce the mold dimension as much as possible.
济南注塑模具
(3)系统流道应尽可能短,断面尺寸适当(太小则压力及热量损失大,太大则塑料耗费大);尽量减小弯折,表面粗糙度要低,以使热量及压力损失尽可能小。
(3) The flow channel of the system should be as short as possible, and the section size should be appropriate (too small will lead to large pressure and heat loss, and too large will lead to large plastic consumption); The bending should be minimized and the surface roughness should be low to minimize the heat and pressure loss.
(4)对多型腔应尽可能使塑料熔体在同一时间内进入各个型腔的深处及角落,即分流道尽可能采用平衡式布置。
(4) For multiple cavities, the plastic melt should enter into the depth and corner of each cavity at the same time, that is, the runner should be balanced as far as possible.
(5)满足型腔充满的前提下,浇注系统容积尽量小,以减少塑料的耗量。
(5) On the premise of cavity filling, the volume of gating system should be as small as possible to reduce the consumption of plastic.
(6)浇口位置要适当,尽量避免冲击嵌件和细小的型芯,防止型芯变形,浇口的残痕不应影响塑件的外观。
(6) The gate position should be appropriate, try to avoid impacting the insert and small core to prevent core deformation, and the residual mark of gate should not affect the appearance of plastic parts.

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