Medical injection mold forming structure
1. The parts that give the shape, structure, and scale of the molding material are generally composed of cores (punch molds), concave mold cavities, thread cores, inserts, etc.
2. Medical injection mold pouring system It is the channel that leads the molten plastic from the injection machine nozzle to the closed mold cavity. It is generally composed of a main flow channel, a runner, a gate and a cold slug well.3. The guide part of the medical injection mold is set to ensure the accurate alignment of the movable mold and the fixed mold when the closed mold is closed, which has a guiding and positioning effect. It is composed of a guide post and a guide sleeve. Some medical injection molds are still on top Guide parts are set on the ejection plate to ensure the smooth and reliable movement of the demolding tissue. The inside is composed of demoulding organization, core pulling organization, machine model conditioning system, and exhaust system.
4. The demoulding organization of medical injection mold is the equipment to complete the demolding of plastic parts and casting system. There are many structural forms. Commonly used are ejector, pipe, top plate and pneumatic ejector. Generally, it consists of ejector and reset rod. , Slingshot, mandrel fixing plate, top plate (top ring) and top plate guide post/guide sleeve, etc.
5. Core-pulling structure of medical injection mold. For plastic parts with side holes or undercuts, before being ejected and demolded, lateral core-pulling or separate sliding block (lateral parting) must be carried out to smoothly demold.
6. Medical injection mold mold temperature adjustment system In order to meet the mold temperature requirements of the injection molding process, a mold temperature adjustment system (such as cooling water, hot water, hot oil and electric heating system, etc.) is required to adjust the mold temperature.
7. In order to smoothly discharge the gas in the mold cavity, the medical injection mold exhaust system often opens an exhaust groove at the parting surface of the mold, and the gaps between the push rods of many molds or other movable parts (such as sliders) are also Can play an exhaust effect.