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The advantage of hot runner for paint bucket mould

Date:2018/12/26    Click:

The advantage of hot runner for paint bucket mould

Hot runner paint bucket molds are so widely used, mainly because they have the advantages that traditional molds cannot match:
1 Shorten the molding cycle. Due to the limitation of the cooling time of the sprue system, the parts can be ejected in time after solidification. Many thin-walled parts produced with hot runner molds have a molding cycle of less than 5 seconds;
2 Save plastic raw materials. In the pure hot runner paint bucket molds, there is no cold runner, so there is no production cost. This is especially significant for reducing raw material costs. In fact, the major hot runner manufacturers in the world have experienced rapid development in the world when oil and plastic raw materials are expensive. Because hot runner technology is an effective way to reduce material costs and reduce material costs;
3 Reduce the cost and improve the quality of the product.
During the hot runner mold forming process, the plastic melt temperature is accurately controlled in the runner system. Plastics can flow into the cavities in a more uniform state, producing consistent quality parts. In addition, the hot runner molding parts have good gate quality, low residual stress after demolding, and small part deformation. Therefore, many high quality products on the market are produced by hot runner molds;
4 Eliminate the subsequent processes, which is conducive to production automation.
After the workpiece is formed by the hot runner mold, it is the finished product, and there is no need to trim the gate and recycle the processed cold runner. Conducive to production automation;
5 Expand the application range of the injection bucket molding process. Many advanced plastic molding processes have been developed based on hot runner technology.
6. It is difficult to find out whether the hot runner is leaking because it is not visible from the outside of the mold. However, if you look carefully, you can still find some signs of leakage through some signs. In general, when setting up a brand new hot runner, the operator knows how many injections can be contained in the melt channel. For example, if the melt channel can contain three shots (each shot is the melt/cavity capacity) Then, after three injections, there should already be melt in the cavity. If not, it is likely that the melt leaked into the manifold. When the hot runner is activated, it must be ensured that the shot volume is set correctly on the machine.
7. Another indication of leakage during operation is that part of the cavity or product charge is incomplete. This is because some of the injected melt leaked into the manifold groove, resulting in insufficient injection molding of the product. On the control interface of the injection molding machine, this situation is shown as a sudden change in process parameters.
8. If the operator suspects that a leak has occurred, the injection molding machine should be shut down immediately and the system should be inspected before cooling. After cleaning the system and detecting the cause of the leak, all parts should also be inspected. This is because overheating temperatures or cleaning processes can cause damage to components. If the part is found to be damaged, the part should be replaced immediately.
9. Finally, it is worth mentioning that the operational advantages of high-quality hot runner molds are far greater than the troubles caused by leakage during operation. Therefore, when purchasing hot runners, customers should fully understand the design and performance of various hot runners to ensure the processing accuracy of important parameters and provide necessary technical training for all relevant personnel.

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