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注塑模具三大故障:原因和解决方案整理全了!

来源:http://www.sdlqmj.com 日期:2019-04-26 发布人:admin 浏览次数:
注塑模具是一种消费塑胶制品的工具;也是赋予塑胶制品完好构造和准确尺寸的工具。济南注塑模具的构造方式和模具加工质量直接影响着塑件制质量量和消费效率。注塑模具消费和塑料制品消费理论中常见,常呈现的注塑模具毛病缘由及其扫除办法细致引见如下:
Injection mould is a tool for consuming plastic products, and it is also a tool for giving plastic products good structure and accurate size. The structure and processing quality of Jinan injection mould directly affect the quality of plastic parts and consumption efficiency. Injection mold consumption and plastic products consumption theory is the most common, the most common causes of injection mold defects and cleaning methods are detailed as follows:
1.浇口脱料艰难
1. Difficult stripping of gate
在注塑过程中,浇口粘在浇口套内,不易脱出。开模时,制品呈现裂纹损伤。此外,操作者必需用铜棒尖端从喷嘴处敲出,使之松动前方可脱模,严重影响消费效率。这种毛病主要缘由是浇口锥孔光亮度差,内孔圆周方向有刀痕。其次是资料太软,运用一段时间后锥孔小端变形或损伤,以及喷嘴球面弧度太小,致使浇口料在此处产生铆头。浇口套的锥孔较难加工,应尽量采用规范件,如需自行加工,也应自制或购置专用铰刀。锥孔需经过研磨至Ra0.4以上。此外,必需设置浇口拉料杆或者浇口顶出机构。模具达人微信公众号就是好!
In the process of injection moulding, the gate is stuck in the gate sleeve and is not easy to come out. When the die is opened, the products show crack damage. In addition, the operator must tap the tip of the copper rod from the nozzle to loosen the front and release the mould, which seriously affects the consumption efficiency. The main reason for this defect is the poor brightness of the gate cone hole and knife marks in the circumference direction of the inner hole. Secondly, the data are too soft, the small end of cone hole is deformed or damaged after using for a period of time, and the radian of nozzle sphere is too small, which results in the rivet of the gate material. The taper hole of the gate sleeve is difficult to process. The standard parts should be adopted as far as possible. If it needs to be processed by oneself, special reamers should also be made by oneself or purchased. The taper hole needs to be grinded to Ra0.4 or more. In addition, the gate pull rod or gate ejection mechanism must be set up. The public number of Wechat is good!
2.冷却不良或水道漏水。
2. Poor cooling or water leakage.
济南注塑模具
模具的冷却效果直接影响制品的质量和消费效率,如冷却不良,制品收缩大,或收缩不平均而呈现翘面变形等缺陷。另一方面模整体或部分过热,使模具不能正常成型而停产,严重者使顶杆等活动件热胀卡死而损坏。冷却系统的设计,加工以产品外形而定,不要由于模具构造复杂或加工艰难而省去这个系统,特别是大中型模具一定要充沛思索冷却问题。
The cooling effect of dies directly affects the quality and consumption efficiency of products, such as poor cooling, large shrinkage or uneven shrinkage and warping deformation. On the other hand, the whole or part of the die is overheated, which makes the die unable to form normally and stop production. Seriously, it causes the jack rod and other movable parts to be blocked and damaged by thermal expansion. The design and processing of cooling system depends on the shape of the product. The system should not be omitted because of the complex structure of the die or the difficult processing. Especially for large and medium-sized dies, the cooling problem must be fully considered.
3.动模板弯曲。
3. Bending of moving formwork.
模具制造者有时不注重此问题,常常改动原设计尺寸,或者把动模板用低强度钢板替代,在用顶杆顶料的模具中,由于两侧座跨距大,形成注射时模板下弯。故动模板必需选用优质钢材,要有足够厚度,切不可用A3等低强度钢板,在必要时,应在动模板下方设置支撑柱或支撑块,以减小模板厚度,进步承载才能。
Mold manufacturers sometimes do not pay attention to this problem, often change the original design size, or replace the moving template with low-strength steel plate. In the die with ejector, because of the large spacing between the two sides of the base, the template bends down during injection. Therefore, the movable formwork must be made of high-quality steel with sufficient thickness, and low-strength steel plates such as A3 should not be used. When necessary, the supporting pillars or blocks should be set under the movable formwork to reduce the thickness of the formwork and improve the carrying capacity.
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