Sep 20, 2019
Different measures need to be taken in a company to ensure the quality of molded parts.
This results in processes such as a continuous inspection of each part or a processing of complaints.
Today, all processes that have to do with quality assurance are represented by appropriate programs. Therefore, one speaks of computer-aided quality assurance (CAQ).
The abbreviation CAQ contains for example the following processes:
– Incoming inspection
– Production-accompanying examination
– outgoing goods inspection
– Audit system
– Test Equipment Management
– Complaint management, etc.
Quality: Example of the user interface (QEX) of the system “Solvtec CAQ”.
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Mar 14, 2023
If a gate shall not be visible while using a cold runner to fill the part, the melt can be delivered into the cavity by using a cashew gate (also known as banana gate or curved tunnel gate).
The curved design of the runner makes it possible to gate on the backside of a part.
As soon as the mold is open the gate will be separated automatically.
But it needs to be kept in mind that brittle materials or fiber filled materials will break during ejecting and a small piece of material will block the channel afterwards.
Before using a cashew gate the stroke of the ejector pin as well as the type of material must be checked thoroughly.
Injection
mold: Gating through a
cashew gate
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This glossary of plastic industry is provided by PLEXPERT Canada Inc.
Nov 29, 2018
The space between the two mold halves, which should be filled with melt, is called cavity.
The shrinkage of the material needs to be considered for the production of the cavity to get dimensionally accurate parts.
In the injection molding simulation, it is important to use the cavity size for the warpage calculation.
Feb 28, 2020
An injection mold can contain one or more cavities.
The number of cavities is often named cavity count.
In general it is considered that all the cavities are identical if we talk about cavity count.
The more cavities in one mold, the more parts can be produced at once.
Therefore production time and part costs can be reduced.
Dec 11, 2018
The pressure inside the cavity is called cavity pressure. It is usually smaller than the specific pressure due to pressure losses.
Sensors inside the mold are used to measure the cavity pressure and to compare it with the injection molding simulation.
The time-pressure curve of a complete cycle helps to validate the vp-switch, as well as the effect of the packing phase.
The part quality can be evaluated easier.
