1. In the design of automotive injection molds for seal molds, Moldflow software should be used to analyze the cooling deformation of each mold during the design process, and then adjust the temperature control design system for areas with greater deformation or higher molding temperature.

2. Fix the mold and design the cooling water circuit according to the shape of the product.

3. The three-meter principle of the seal mold: the total length of the cooling water path (series length) should not be too long, and should be within 1.5~2M.

5. The center distance between the cooling channels of the seal mold is generally 5 to 7 times the diameter of the water hole.

6. The crossing angle of the slope waterway is controlled to be less than or equal to 35°.

7. The length of dead water produced by the intersection of the two water channels of the seal mold cannot easily exceed 100 mm.

8. The cooling water circuit is arranged at the nozzle of the hot runner, and the cooling system should be designed separately as far as possible.

9. The inlet and outlet of the cooling water channel should be designed as far as possible on the non-operating side of the molding machine personnel.

10. Try to avoid connecting the inclined water channel with the mold core water channel, and do not design the double-angle water channel.

11. Generally, large and medium-sized molds should be equipped with groundwater collection blocks to achieve the state of cooling water channels.

The temperature of the seal mold has a great influence on the molding quality and efficiency of rubber parts. In a mold with a higher temperature, the molten rubber has better fluidity, which is conducive to filling the cavity with rubber and obtaining a high-quality rubber part appearance surface, but it will make the curing time of the rubber material longer and easy to deform during ejection. . For crystalline rubber materials, it is more conducive to the crystallization process, avoiding the size change of rubber parts during storage and use; in a mold with a lower temperature, it is difficult for the melt to fill the cavity, resulting in large internal stress, dull surface, and silver Defects such as lines and welds.

Different rubber materials of the seal mold have different processing techniques, and the surface requirements and structures of various rubber parts are also different. In order to produce rubber parts that meet the quality requirements within an effective time, the mold is required to maintain the temperature. The more stable the mold temperature, the more consistent the requirements of the size, shape and appearance quality of the produced rubber parts. Therefore, in addition to the mold manufacturing factor, mold temperature is an important factor in controlling the quality of the bonded parts. The mold temperature control method should be fully considered in the mold design.