In plastic injection molding, The sprue bushing is a metal part that links the mold with the injection machine. The sprue can also be described as a part of the runner, which allows the molten plastic material to be injected into the mold through the nozzle of an injection machine.Bolt-type sprue bush is a sprue
The Purpose of The Injection Mold Cooling System The design purpose of the cooling system is to ensure uniform cooling, as well as the shortest possible ejection time of the molded products, so as to complete the production process. Cooling design has a direct influence on product quality and molding cycle. Cooling Location
Due to the special requirements of some products, the mold release of some part is not consistent with the mold opening direction of the injection machine, which needs the side parting core pulling mechanism to eject the product smoothly. The side parting core pulling mechanism comes with two types: slider(also known as slide) and lifter.
O-ring is a typical extruded seal, of which the main sealing design elements are the compression ratio and elongation of its cross section diameter, since they are of great significance to sealing performance as well as service life. The outstanding sealing effect of O ring largely depends on the accurate matching between the dimensions and
Ejector Block 1) Direct ejection can be in 2 styles: ejector and ejecting block + ejector pin. 2) The ejector is designed with gradients on its four sides: 1°on the side that clings to the product and 3° on the other three sides. 3) When the core of plastic injection mold is integrated, the distance
For dozens of years, to produce polymer parts, the team of product development has to be reliant on the plastic injection molding process, which is a proven, robust, repeatable and ideal process for the manufacturing of high volume products, but a product development team has to consider the injection mold cost when employing the injection
Nylon lock A Nylon lock are used to lock A plate and B plate before runner are released out from A plate。Standard components :PLB type，the diameter depends on mold base size ： When the mold plate is thick, we need to make venting for nylon lock: All copyright reserved by plastic mold
Ejector sleeves 1) The application of ejectors sleeves is required when a product features a hollow pillar structure and a great height. The matching relationship between pillars and sleeves is shown in the diagram below: When a product features a pillar that is equipped with shockproof rubber, the ø3/16” + ø1.7 sleeve should be selected.
The function of the stop pin 1.Reduce the contact surface betwwen ejector plates and clamping plates,it is easy to control the flatness of ejector plates by adjusting the thickness of stop pins. 2.Buffer against ejector plates The material of stop pin S45C，hardness HRC40°~45° Position of stop pin 1.An STP must be installed under the RP to
The function of return pins Return pins’ functionis to push the ejecting plate back The Spec. of return pins Usually, when production automation is required for the plastic injection mold, a spring has to be installed under RP. See the following diagram: The spring type is TF. (Note: spring installation requirements: A. Spring preload is