Plastic Injection Mould Slider Design Points

The slider design in the plastic injection mould is one of the key elements to ensure the smooth progress of side core pulling. The slider is usually connected with the forming core, and the core pulling operation is performed by means of an inclined guide post. In general, the slider and the lateral core are combined to form a side slider core, which is also called a combined side slider. However, when the side core is simple and easy to process, the slider and the side core can be made into an integral side slider.

The inclined hole of the slider must be precisely matched with the inclined guide post, and a single-sided gap of 0.5mm should be left when mating. In this way, a very small empty stroke will be generated at the moment of mold opening, so that before the slider and the movable core are pulled out, the plastic product can be forcibly separated from the die or punch, and the locking block is first separated from the slider, and then Carry out the core pulling operation again. The structural form of the slider depends on the mold structure and the force of the side core pulling.

Normally, the slider is used in conjunction with the guide chute. In order to ensure that the slider can drive the core smoothly and accurately for core-pulling operation, a guide chute must be provided on the fixed or movable template. There must be good cooperation and guidance between the slider and the guide chute. After the core pulling action is completed, the slider should stay in the guide chute, and the length of stay should not be less than 2/3 of the total length of the slider. Common guide chute structures include a rectangular guide chute and a dovetail guide chute.

In the slider design, material selection and heat treatment also need to be considered to ensure that the slider has sufficient strength and wear resistance. In addition, proper lubrication and cooling measures are required to reduce friction and heat build-up and improve the life and production efficiency of the mold.

In summary, the slider design in the plastic injection mold is critical to the success of the side core pulling operation. Through reasonable structural design, precise fit, and appropriate material selection, the smooth movement of the slider during the mold opening and closing process can be ensured, and efficient and stable side core pulling operation can be realized. The optimization of the slider design will improve the service life and production efficiency of the mold, and make a positive contribution to the development of the injection molding industry.

In addition to the slider design points mentioned above, there are some other key considerations. The first is the size and shape design of the slider, which should be determined according to the shape and requirements of the injection molding product. The size of the slider should be large enough to ensure that the slider has sufficient stability and rigidity during the core pulling operation. The shape design needs to take into account the structure of the mold and the transmission method of the side core pulling force to achieve a good fit and action accuracy.

In addition, the manufacturing process and material selection of the slider are also critical. The manufacturing process should ensure the precision and surface quality of the slider to reduce friction and wear and improve the life of the slider. In terms of material selection, common slider materials include tool steel, cemented carbide, etc., and their hardness and wear resistance should meet the requirements. In addition, proper heat treatment of the slider, such as quenching and tempering, can further improve its strength and hardness and increase its service life.

In practical applications, the maintenance and maintenance of the slider is also crucial. Lubricating and cleaning the slider regularly, and repairing or replacing damaged parts in time can prolong the service life of the slider and ensure its normal movement and function. In addition, monitoring and recording the usage and failure conditions of the slider can provide a valuable reference for the improvement of mold design and production process.

The design of the slider in the plastic injection mold is a process that takes multiple factors into consideration. Through reasonable design and manufacturing process, proper material selection, and effective maintenance, the stable movement and reliability of the slider during the injection molding process can be ensured. The optimized slider design will significantly improve the service life of the mold, production efficiency, and product quality, thereby promoting the development and innovation of the injection molding industry.