The primary process of mold trial and attention to problems


The first process of mold trial: In order to prevent un […]

The first process of mold trial:
In order to prevent unnecessary waste of time and troubles during mass production, it is indeed necessary to pay for patience to adjust and control various processing conditions, and to find the best temperature and pressure conditions, and to formulate standardized trial procedures, which can be used in Establish a daily approach.

Check whether the plastic material in the barrel is correct, and whether it has been baked in accordance with the regulations (if different materials are used for trial and production, different results may be obtained).

The finishing of the material pipe must be thorough to prevent inferior rubber or miscellaneous materials from being injected into the mold, which may cause the mold to jam due to inferior rubber and miscellaneous materials. Check whether the temperature of the material tube and the temperature of the mold are suitable for the processed material.

Adjust the pressure and injection volume to obtain a product with a satisfactory appearance, but it is not possible to run off burrs, especially when some mold cavity products are not completely condensed, you should consider before adjusting various control conditions, due to the mold filling rate A slight change may cause a significant change in filling.

It is necessary to wait patiently until the conditions of the machine and the mold are stabilized, that is, a medium-sized machine may have to wait more than 30 minutes. You can use this moment to view possible problems with the product.

The travel time of the screw should not be shorter than the time when the gate plastic condenses, otherwise the weight of the product will decrease and the performance of the product will be impaired. And when the mold is heated, the screw travel time needs to be lengthened to compact the product.

Reasonably adjust to reduce the total processing cycle.

Work for at least 30 minutes to ensure stability under the newly adjusted conditions, and then produce at least a dozen full mold samples in succession, mark the date and quantity on the container, and place them separately according to the mold cavity, so as to test the stability of its work and its export Reasonable control of public service. (Particularly valuable for multi-cavity molds).

Measure consecutive samples and record their important dimensions (the samples should be measured when they are cooled to room temperature).