The control system includes the axial wall thickness control system and the circumferential wall thickness control system to adjust the gap between the die lip and the core. The main process parameters that affect the wall thickness distribution are the die diameter and wall thickness control system of the blow molding machine. At this time, the two phenomena of parison ejection expansion and parison drooping affect the parison forming. In order to ensure a smooth product appearance at the end of molding and easy to eject, those factors must be considered during designing preform.PET preform mold manufacturers, the blanking stage of the blow molding mold blank is extruded from the gap between the die lip and the mold core as the blanking stage. Preform design: Generally speaking, we all know that the product design is completed first, but the final forming is finished in the hot runner mold. Performance of injection molding machine: be able to install the mold of given size, provide sufficient clamping force, operate according to the requirements of cycle time, plasticize enough materials, etcġ0. Temperature control: each nozzle must be connected to a relatively complex temperature controllerĩ. Runner: the use of the hot runner system ,which can save raw material.Ĩ. Nozzle: generally, nozzle can be distinguished according to size, temperature distribution, physical characteristics, materials used (copper, steel, etc.) and maintenance difficulty and price.ħ. Gate: in order to maintain good heat balance in each molding cycle,the valve gate is mechanically sealed.Ħ. For example, the nozzle should accurately transfer heat and be durable.ĥ. Cycle time: Papid production cycle means the improvement of nozzle requirements. Mold: what is the cavity number? What is the nozzle distribution distance? What kind of materials are processed?Ĥ. Plastic raw materials: different plastic materials have different processing variablesģ. Weight of preform: Different weight of preform have different requirements for the hot runner preform mold.Ģ. Q: What should we pay attention to when selecting the preform mold?Ī1. Taizhou SICA MOULD Co.,Ltd is a high-tech enterprise which specializes in production of two stage plastic injection molds.The company is located in mold hometown China.The company is mainly engaged in preform mould.With solid work,excellent performance,products are exported to Middle East,Southeast Asia,Russia,Africa,America and other many countries and regions,well received by the masses of users.Company adhering to the advanced design idea,and the spirit of pragmatic innovation,and constantly improve production technology,strengthen the detection means,is committed to the broad masses of users to provide stable and high efficiency,energy conservation and environmental protection equipment.And provide efficient after-sales service and product solutions for users. The bottle preform thread screw requires constant reinforcemen If not for a long time production need coated with rust inhibitor.Ĥ. The guide pillar maintenance guide post on also want to apply a small amount of hydraulic oil, cycle for once a month.ģ. Maintenance of oil in the hydraulic oil, hot oil type from cooling nozzle into, can act as a lubricant, antirust function.Ģ. Hot Runner Plastic Injection Pet Bottle Preform Mould th 48 cavityīottle preform mould cavity, thread, core, slider, heating blocks and die set a six-part composition, general bottle preform mould can be divided into two categories: ordinary long runner preform mould and ordinary short water bottle preform mould, needle valve type bottle preform mould, double self-locking bottle preform mould, etcġ.The preform using computer design, all standardized CNC manufacturing.Ģ.Using the world's most advanced two-axis double taper positioning technology, each chamber independently from the lock, ensure low eccentricity.ģ.The production cycle is short, long life, I plant a small fine rich experience in mold, preform eccentricity error within 5 wire.Ĥ.According to the international standardization of mouth thread manufacturing, material selection aluminum nitride 38 chrome-molybdenum steel, high hardness, long life.ĥ.Runner advanced design, heating temperature, can improve quality of plastic products.Ħ.Avoid cutting the gate, and reduce labor costs.ħ.Advanced technology, high-precision machining, the parts are interchangeable, easier to use.Ĩ.Room temperature water cooling to achieve high efficiency, automated production.ġ. Tooling machine:CNC,CNC lathe, EDM, Engraving ,Wire-Cutting
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