What are the common problems that occur in the injection mol

Molds are known as the mother of industry and play a crucial role in daily mass production. It affects the quality of plastic products and also affects their appearance. Among them, the three color injection molding mold is more attractive and favored by customers because it can use three colors at the same time. However, because its process structure is more complex than ordinary single color injection molding molds and dual color injection molding molds, it is more prone to problems in injection molding production. Today, the editor of Rongyuan Plastics will take you to analyze what problems may occur in the three color injection molding mold during injection molding?

1： Deformation - The causes of finished product deformation during the opening of a three color mold are generally:

1. The temperature difference between the front and rear molds is significant.

2. The rear mold has insufficient grip, while the front mold has greater grip.

3. The adhesion of the front mold is strong.

4. The resin switch is abnormal.

5. The switch mode sequence is abnormal.

2： Overflow - The reasons for overflow during the opening of a three color mold are generally:

1. The pre pressing amount at the mold core is insufficient.

2. The molding conditions are poor, and the finished product in one shot is not fully filled.

3. The inadequate size of the first shot mold resulted in insufficient flesh thickness in the finished product.

4. If the second shot is made of soft materials such as PU and TPE, it may be caused by too high material temperature or mold temperature.

3： Clear glue line - The reasons for the obvious glue line in the opening of a three color mold are generally:

1. The mold has not undergone exhaust treatment or has insufficient exhaust.

2. Poor gate position.

3. Poor forming conditions.

4. Low mold temperature, low injection pressure, low injection rate, etc.

4： Cracking - The reasons for cracking during the opening of a three color mold are generally:

1. If the temperature is too high, it will make the sol too soft and lose its toughness, making it more prone to brittle cracking.

2. The filling speed is usually fast enough to meet the filling requirements of plastic molds. If the filling speed is too slow, it will be more prone to cracking.

3. Pressure: During the injection molding process of the three color mold, excessive processing pressure, fast speed, more filling, and long injection and pressure holding times can all cause internal stress to be too high and cause cracking;

Compared to other molds, the three color injection molding mold has a complex structure and greater processing difficulty. In actual production, the problems encountered may go far beyond these. So when choosing a mold supplier, careful consideration should be given. Kunshan Rongyuan Plastic Co., Ltd. is a professional manufacturer engaged in the plastic mold manufacturing industry, with experience in cooperating with multiple Fortune 500 enterprises in China, and is worthy of trust!