精密注塑机的结构特点

Structure features of precision injection molding machine

1) 由于精密注射机注射压力高，这就要强调合模系统的刚度。动、定模板的平行度控制在0.05～0.08mm 的范围内。

1) because of the high injection pressure of the precision injection machine, the rigidity of the die system must be emphasized. The parallelism of the moving and fixed plate is controlled in the range of 0.05 ~ 0.08mm.

2) 要求对低压模具的保护及合模力大小精度的控制。因为合模力的大小要影响模具变形的程度，最终要影响到制件的尺寸公差。

2) the protection of the low pressure die and the control of the size and accuracy of the clamping force are required. Because the magnitude of the die force affects the degree of die deformation, the dimensional tolerances of the final parts must be affected.

3) 启、闭模速度要快，一般在60mm/s左右。

3) the speed of starting and closing dies is fast, usually around 60mm/s.

4) 塑化部件: 螺杆、螺杆头、止逆环、料筒等, 要设计成塑化能力强、均化程度好、注射效率高的结构形式；螺杆驱动扭矩要大，并能无级变速。

4) plasticizing parts: screw, screw head, check ring, cylinder, etc., to be designed to strong plasticizing ability, good homogenization, high injection efficiency of the structure form; screw driving torque is large, and can continuously variable speed.