When the injection molding manufacturer produces products in the injection molding workshop, it has been reported that the products are cracked during the processing. I believe that everyone wants to know the answer, what is the factor that causes the product to crack in the process of processing?

 

1、 First of all, from a different point of view of the problem of product cracking, whether from the injection molding process or from the mold itself. From the rubber material itself to judge the cause of product cracking. Some small at a glance, more serious need to open the mold to check the injection molding machine to find the problem.

 

2、 From the perspective of injection molding, the following aspects may be the factors leading to product cracking. It is necessary to know that the pressure of injection molding is too high, the speed is too fast, the more materials are punched, the injection molding, and the holding time is too long. Excessive stress can lead to cracking. This is the problem of internal stress. Adjusting the opening speed and pressure can effectively prevent the product from cracking due to rapid and powerful drawing and demoulding. Adjust the speed properly to prevent cracking. In the process of injection molding, the mold temperature should be increased to make the product easy to demould. Proper lowering of material temperature can also prevent decomposition. Different die parts must be clearly assigned. It is also necessary to prevent the cracking of products due to weld marks and rubber degradation. The above are several factors that may lead to product cracking during injection molding. We should also pay attention to avoid this kind of cracking in the production process.

 

3、 From the perspective of injection mold, mold problems may be divided into the following points. It is easy to dry crack under stress. We not only know but also know how to effectively avoid cracking. The ejection of the mold must be balanced, such as the number of thimbles, the cross-sectional area should be enough, and the ejection angle should be designed reasonably. The cavity surface should be smooth enough. In this way, the cracking caused by residual stress concentration of demoulding caused by external force can be effectively prevented. As long as we pay attention to the details in the production, we can effectively avoid the pressure problem. Second, the product structure should not be designed too thin to avoid sharp corners and chamfers that lead to stress concentration.