注塑（sù）模具隨著產品的外觀要求千變萬化，尺寸和（hé）精 密度（dù）的掌握（wò）至關重（chóng）要，在（zài）設計尺寸時需要（yào）多方麵考（kǎo）慮。

　　With the ever-changing appearance requirements of injection mold products, it is very important to master the size and precision.

　　首先，模具加工設（shè）從塑（sù）件外形美觀的角度考慮，塑件由於受融料流（liú）動的因（yīn）素，流動性差的塑（sù）件融料（liào）和（hé）壁比較薄的塑件，設計的尺寸盡量簡化，否則（zé）容易導致融料填充不足，影響產（chǎn）品外形美觀，一定需要大的尺（chǐ）寸時（shí），可以選擇換塑件原料或稍作調整壁的厚度（dù）。

　　First of all, the mold processing design is considered from the perspective of the appearance of the plastic parts. Because of the melt flow, the plastic parts with poor fluidity melt and thin wall, the design size should be simplified as far as possible, otherwise it is easy to lead to insufficient melt filling and affect the appearance of the product. When a large size is needed, you can choose to change the raw materials of the plastic parts or slightly adjust the wall thickness

　　濟南模（mó）椇廠

　　濟南模具廠

　　Jinan mould factory

　　其次，產（chǎn）品的尺寸精 確度。塑件融料在生產過程中會產生一（yī）定的收縮率和（hé）稍微擴張，主要是塑膠融料（liào）在成（chéng）形的過程中會導致尺寸收縮，造成尺（chǐ）寸的不精（jīng） 確。收縮過程主要有成形收縮和後收縮（suō），受到成形收縮的影響（xiǎng）比較大，造成收縮的因素有多種，在模具加（jiā）工的工藝上，需考慮塑件的原料（liào）使用性能，避免造成尺寸（cùn）不精 確。

　　Secondly, the dimensional accuracy of the product. Plastic melt in the production process will produce a certain shrinkage and slight expansion, mainly plastic melt in the forming process will lead to size shrinkage, resulting in inaccurate size. The shrinkage process mainly includes forming shrinkage and post shrinkage, which are greatly affected by forming shrinkage. There are many factors causing shrinkage. In the process of mold processing, the material performance of plastic parts should be considered to avoid inaccurate size.

　　模（mó）具的尺寸和（hé）精度需要從塑件在成型過程中遇到的（de）情況設計合（hé）理，降低生產成（chéng）本（běn），提高產品質（zhì）量.

　　The size and precision of the mould should be designed reasonably according to the situation in the forming process, so as to reduce the production cost and improve the product quality