Temperature debugging
Temperature is one of the key factors in the debugging of plastic pipe mold. First, we need to determine the appropriate barrel temperature, which is generally set according to the type and characteristics of the plastic raw materials used. Too high a temperature may cause the plastic to decompose and affect the quality of the pipe; too low a temperature will cause poor plasticization of the plastic and difficulty in molding. At the same time, attention should be paid to the adjustment of the mold temperature. Uneven mold temperature will cause problems such as uneven wall thickness and surface defects in the pipe. For different pipe sizes and production speeds, it is necessary to find the best mold temperature range through repeated experiments to ensure that the plastic can flow and cool evenly in the mold, so as to obtain a pipe with stable dimensions and smooth surface.
Pressure debugging
When debugging Plastic pipe mold, the adjustment of pressure is crucial. The injection pressure directly affects the filling speed and filling effect of the plastic in the mold. Excessive pressure may cause internal stress in the pipe, causing deformation and rupture of the pipe; too low pressure will cause defects such as insufficient filling and lack of material. The setting of the holding pressure should not be ignored, as it has an important influence on the dimensional accuracy and density of the pipe. The appropriate holding pressure can keep the pipe stable in shape during the cooling process and prevent shrinkage and deformation. During the debugging process, the injection pressure and holding pressure need to be gradually adjusted according to factors such as the wall thickness, size and fluidity of the plastic to achieve the best molding effect.
Speed debugging
The debugging of plastic pipe mold also needs to pay attention to the matching of extrusion speed and pulling speed. The extrusion speed determines the supply of plastic, while the pulling speed affects the wall thickness and dimensional accuracy of the pipe. If the extrusion speed is too fast and the pulling speed is too slow, the pipe will have too thick wall or even pile up; conversely, if the extrusion speed is too slow and the pulling speed is too fast, the pipe will become thinner or even break. Therefore, during the debugging process, it is necessary to accurately measure and adjust the extrusion speed and the pulling speed to achieve a good match, ensure that the wall thickness of the pipe is uniform, the size meets the requirements, and can be produced stably and continuously.
Cooling and demoulding debugging
The debugging of the cooling system is also important for plastic pipe mold. Check whether the cooling water channel is unobstructed and whether the flow and temperature of the cooling medium are appropriate. Uneven cooling will cause stress concentration in the pipe, affecting its mechanical properties and appearance quality. In addition, the debugging of the demoulding mechanism should not be ignored. Ensure that the demoulding action is smooth to avoid damage to the pipe or mold due to demoulding difficulties. Adjust the demoulding force and demoulding time so that the pipe can be smoothly ejected from the mold while ensuring that the surface quality and dimensional accuracy of the pipe are not affected. Through careful debugging of cooling and demoulding, production efficiency can be improved, scrap rate can be reduced, and the service life of the mold can be extended.
The debugging of the plastic pipe mold requires comprehensive consideration of factors such as temperature, pressure, speed, cooling and demoulding. Only through careful adjustment and optimization can the mold reach the best working state and produce high-quality plastic pipes.
