Several questions of moulding equipment and structure


Whether the flow, shrinkage, weld mark, crack, and draf […]

Whether the flow, shrinkage, weld mark, crack, and draft angle of the plastic material affect the performance, dimensional accuracy, surface quality and the like of the plastic parts. Whether the pattern design is insufficient or not, whether the processing is simple or not, and whether the shrinkage rate of the moulding material is selected correctly.

Moulding equipment:

The injection volume, injection pressure, and clamping force are insufficient. The installation of the mould, the south core of the plastic part, and the mould release have no problem. The nozzle of the injection machine and the mouthpiece are in proper contact.

Mould structure:

Whether the position of the parting surface and the precision of the finishing meet the requirements, will there be any flashover, and whether the plastic part can be left on the side of the mould with the ejector device after the mould is opened.

Is the demoulding method correct? Is the size, position and quantity of the promotion rod and the push tube appropriate? Will the push plate be caught by the core and will not cause the moulded part to be scratched.

Mould temperature adjustment: the power and quantity of the heater; whether the flow line position, size and quantity of the cooling medium are suitable.

The method for processing the undercut of the plastic part is whether the mechanism for removing the undercut is appropriate, for example, whether the slider and the push rod in the core pulling mechanism of the inclined guide column interfere with each other.

The position of the pouring and exhaust system is appropriate.

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