又粗又长又硬爽死我了动态图

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frpp管材模具整體設計原則

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    frpp管材的模具設計是一項精美的工作,按照整體設計的原則設計是設計出合理模具的前提,所以我們需要詳細了解該frpp管材模具的整體設計原則。

管材及型材都應必須滿足以下要求,即:外觀光潔性、尺寸準確性、形狀與位置精度準確性、單位長度的質量和物理機械性能。為了滿足各要求必須遵守下列原則:由重心原理決定。成型管的芯棒與芯模軸線應位于螺桿的軸線上。frpp管材流道應是漸變的,不應急劇擴大與縮小,不得有任何“死點”和臺階,以避免熔體的流動不順暢。流道軸線長度上要有足夠的壓縮比,使制品密實和清除因分流所造成的結合縫。應盡量實現標準化、系列化和通用化。在強度允許的條件下,模頭尺寸應盡量減小。另外frpp管材結構應盡量簡單,拼塊盡量少,應易拆、卸,以便清理和修整。熔體從進入模頭直到從模唇擠出時,必須盡可能恒定地加速,直至在frpp管材模頭成型區(亦即在出口前不遠處)之前達到所要求的熔體出口速度,除了由芯體和鑲塊的支撐引起的減速之外,應盡可能避免減速。選模具材料要適宜。

    我們詳細的了解了frpp管材的模具整體設計原則之后,應當嚴格按照此原則執行設計,在具體的執行中方能做出合理的設計。

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又粗又长又硬爽死我了动态图
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