| 半挤管式模具的设计 |
| 添加时间：2019/12/24 14:10:00 浏览次数： |
| 半挤管式模具的设计与挤管式模具的设计基本是一样的，所不同的是：模芯——模嘴部分的长度没有挤管式长，且模嘴应在模套定径区的1/2处；模套——定径区的长度较挤管式模套的定径区稍短。其他参数的设计与挤管式模具的设计是一样的。 The design of semi extruding die is basically the same as that of extruding die. The difference is that the length of die core die nozzle part is not as long as that of extruding die, and the die nozzle should be 1 / 2 of the sizing area of die sleeve; the length of die sleeve sizing area is slightly shorter than that of extruding die sleeve. The design of other parameters is the same as that of extrusion die. 总之，设计模具时，除考虑材料、加工、使用寿命外，还应满足下列条件： In a word, in addition to the consideration of material, processing and service life, the following conditions shall also be met when designing the mold: ①增加模具的压力，使塑料从机筒进入模具后的压力均匀稳定增加，增加塑料的致密性； ① Increase the pressure of the mold, make the pressure of the plastic from the barrel into the mold evenly and stably increase, and increase the compactness of the plastic; ②增长模具配合部分的塑料流动通道，使流动中的塑料进一步塑化，从而提高塑料塑化的程度； ② Increase the plastic flow channel of the mold matching part to further plasticize the plastic in the flow, so as to improve the degree of plastic plasticization; ③消除模具配合中产生的流动死角，防止塑料在死角中发生老化、产生老胶。 ③ Eliminate the flow dead angle in the die matching, prevent the plastic from aging in the dead angle and producing old glue. |
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