What is the side parting and core pulling mechanisms with their function?

 When there are holes, cavities or cores on the inside or outside of the injection-molded plastic parts that are different from the opening and closing directions of the mold, the plastic parts cannot be directly pushed out of the mold by a push mechanism such as a ejector pin. So we will make the movable parts that can move laterally, and then before the plastic parts are demolded and pushed out, the laterally formed parts can be pulled out first, and the plastic parts can be pushed out of the mold, otherwise it cannot be demolded. The entire mechanism that drives the laterally formed parts for lateral splitting and core-pulling and reset is called the lateral splitting and core-pulling mechanism. For the case of forming lateral bosses, it is often called side parting; for forming side holes or undercuts, it is often called side core pulling.

  图片1.png

The main function is to get rid of the undercur on the plastic part, so that the plastic part can be smoothly released from the mold. The structures often used in the mold include slider core pulling, lifter core pulling, unscrewing core pulling, etc., and the slider can be subdivided into cavity slider, core slider, inner slider (tunnel slider) and so on.

图片2.png

Tags: Injection Mold | Injection Mold Supplier | Injection Mold Factory | Injection Molding Supplier | Injection Molding Factory | Mold Factory | Mold Supplier | Injection Molding |
Related News about USM Injection Mold
  • Slider spring hength and strength calculation

    Slider spring hength and strength calculation

    Apr 22, 2024Processing size: 1. ØD2=ØD+2 2. Ll = total spring length (L) - preload value of spring (N) - slider core pulling distance (L2) Spring length calculation: (refer to picture 1 for length calculation)...view
  • Slider designing tips 1

    Slider designing tips 1

    Aug 3, 20221. After the slider core pulls out, the length of staying in the guide pin slot should not be less than 2/3 of the total length of the slider, for special cases, the slider slot can be partially...view
  • Design standard of exhaust slot

    Design standard of exhaust slot

    Mar 3, 2022The exhaust system should ensure that the gas in the cavity is smoothly discharged, and also prevent the material from entering and exhausting channels from causing flashing of the product or blockage...view
  • Design Tips of Vacuum Venting Mold

    Design Tips of Vacuum Venting Mold

    Mar 30, 2022There are some regular venting way which are parting surface venting, insert venting, insert pin venting and well-ventilated steel, but there is a special way is vacumm venting, it will need vacumm...view
  • Design principles of plastic injection mold runner system

    Design principles of plastic injection mold runner system

    Jan 6, 20221. Quality first The design of the gating system has a big influence on part quality, firstly the gate should be set at the easiest part of the plastic part to be removed, and at the same time, the...view
  • The T slot of slider and guider designing tips

    The T slot of slider and guider designing tips

    Dec 18, 20231. The T slot of slot should be designed according to the picture 1, If there is a relatively high slider, the slider T slot is not high enough which will cause the center of gravity to be unstable,...view