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Why do injection molds need to be tested before shipment?

Update:25-07-2022
Summary:

The pet mold is a precision instrument, and some proble […]

The pet mold is a precision instrument, and some problems in the production process are not found with the naked eye. Moreover, precision tools need to be modified many times to become qualified, and some small problems must be found and solved before production. During the manufacturing process, it is very likely that the storage process cannot be processed, so it is necessary to go through a trial, and then analyze, evaluate and optimize the samples produced by the trial to meet the high-quality requirements. However, most defects in molded products are caused in the plasticizing and injection molding stages, and may also be caused by improper manufacturing of plastic molds. Therefore, in order to avoid product defects caused by mold design, it is necessary to analyze the mold when making the mold. Mold design and process parameters.
Although the process parameters and mold design of the injection mold can be optimized, the production cost of the injection mold will also increase. If the injection mold structure is found to be unreasonable after the mold test, the injection mold needs to be improved, and this work will undoubtedly make the injection cost exceed the budget. For example, some injection molds are well designed, but there are still cases where the process is not in place. When the mold trial does not choose the best molding process and injection molding model, it is obvious that the mold is well done, but in the injection molding The product that came out was not good. There is also no complete understanding of the physical properties of the plastic and no accurate shrinkage rate, which often happens. What makes people vomit blood is that many situations are unsatisfactory, and even the injection mold has to be scrapped and remade.
Moulds cavity: 1 cavity
Moulds Size:According the sample size
Suitable machine:650 T Injection machine
Moulds material:BeCu+DIN 1.2311
Moulds life: 2,000,0
Runner system: 4 pin-point gate
Ejection system:Stripper plate
Moulds running:Full automaticity