Jinan injection molding plastic mold manufacturing should pay attention to the following elements:

1.分型（xíng）麵，即模具閉合時凹模與凸（tū）模相互配合的接觸（chù）表麵。它的位置和形式的（de）選定，受製品（pǐn）形狀及外觀、壁厚、成型方法、後加工工藝、模具類型與結構、脫模方法及成型機結構等因素的影響。

1. Parting surface, that is, the contact surface between the female die and the male die when the die is closed. The selection of its position and form is affected by factors such as product shape and appearance, wall thickness, forming method, post-processing technology, mold type and structure, demoulding method and molding machine structure.

2.結構件，即複雜模（mó）具的滑塊、斜頂、直頂塊等。結構件的設計非常關鍵，關（guān）係到模具的壽命、加工周期、成（chéng）本、產品質量等，因此（cǐ）設（shè）計複雜模具核心結構對設計者的綜合（hé）能力要求較高，盡可能追求更（gèng）簡便、更耐用、更經濟的設計方案。

2. Structural parts, i.e. sliding block, inclined top, straight top block, etc. of complex mold. The design of structural parts is very critical, which is related to the service life, processing cycle, cost and product quality of the die. Therefore, the design of complex die core structure requires higher comprehensive ability of the designer, and pursues a simpler, more durable and more economical design scheme as far as possible.

3.模具精度，即避卡、精定位、導柱、定（dìng）位銷等。定位係統關係到製品（pǐn）外觀質（zhì）量，模具質量與壽命，根（gēn）據模具結構不同，選擇不同的定位方式，定位精度控製主要依（yī）靠（kào）加工，內模定位主要是設計（jì）者充分去（qù）考慮，設計出更加合理（lǐ）易調整的定位方（fāng）式。

3. Die accuracy, i.e. card avoidance, fine positioning, guide post, positioning pin, etc. The positioning system is related to the appearance quality of products, mold quality and service life. Different positioning methods are selected according to different mold structures. The positioning accuracy control mainly depends on processing, and the internal mold positioning is mainly considered by the designer to design a more reasonable and easy to adjust positioning method.

4.澆注係統，即由注塑（sù）機噴嘴至型腔之間的進料通道，包括主流道、分流（liú）道、澆口和冷料穴。特別是（shì）澆口位置的選定應（yīng）有利於熔融塑料在良好流動狀態下充滿型腔，附在（zài）製品上的（de）固態流（liú）道和澆（jiāo）口冷料（liào）在開（kāi）模時易於（yú）從模（mó）具內頂出並予以清除（熱流道模除外）。

4. Gating system, that is, the feeding channel from the nozzle of the injection molding machine to the mold cavity, including main flow channel, shunt channel, gate and cold material cavity. In particular, the selection of gate position should be conducive to filling the mold cavity with molten plastic under good flow state, and the solid runner and gate cold material attached to the product are easy to be ejected from the mold and removed during mold opening (except hot runner mold).

5.塑料收縮率（lǜ）以及影響製品尺寸精度的各項因素，如模具製造和裝配誤差（chà）、模具磨損等。此外，設計壓塑模和注塑模時（shí），還應（yīng）考（kǎo）慮成型機的工藝和結構參數的匹配。在塑料（liào）模具設計中已廣泛應用計算機輔助設計技術。

5. Plastic shrinkage and various factors affecting the dimensional accuracy of products, such as mold manufacturing and assembly errors, mold wear, etc. In addition, the structure and molding parameters of the injection molding machine should be considered in the design of the injection molding machine. Computer aided design technology has been widely used in plastic mold design.