Processing plastic mold several matters needing attention

Small make up to you to introduce the processing plastic mold several matters needing attention, processing injection molding injection molding is one of the links, to meet the need to meet the five elements of injection molding, temperature, time, speed, pressure, position, the five elements decided to shaping the quality of the product, control product quality is the key to this, a qualified products need to control the above factors. The quality of the injection molding of the frequently encountered problems most comes from five points not control good quality caused by abnormal. 1, plastic mould processing process, is the first step on the molding temperature, temperature can be divided into: temperature, drying temperature, mold temperature, these are some of the crucial factors. The drying temperature is to ensure the forming quality and prior to drying of polymer, to ensure that the polymer dry wet in certain lines; Temperature is to ensure that polymer plasticized ( Melt) For normal and smooth molding, molding; Mold temperature is skin size, appearance, considering the important condition of forming period, the control effect in the cavity of the cooling rate, as well as the appearance of the products quality. 2, the speed can be divided into: the process of plastic mold, injection mold speed, melting temperature, loose back, open and close mold speed, thimble back speed. For the improvement of injection rate will affect molding pressure, improve the injection speed can increase the flow length, uniform product quality to ensure product quality, the high speed injection for long process products, low-speed control product size; Melting speed affect the plasticizing capacity, is an important parameter of plasticizing quality, the higher the speed, melt temperature, the higher the stronger the plasticizing capacity; Loose back speed is to reduce the melt volume, enable pressing to drop in the melting chamber, to prevent the outflow of role; Open and close mold speed is one of the important condition of production operation to ensure the machine; Thimbles move backward speed is to ensure smooth demoulding products don't make the product deformation, crack. 3, pressure can be divided into: pressure, pressure, back pressure, clamping pressure, mold protect pressure and ejection. The process of plastic mold, shoot pressure to overcome the melt from the nozzle - - - - - - Port - - - - - - - Gate - - - - - - - Cavity pressure loss to ensure cavity is filled; The holding is to reduce the parts caused by highly large injection pressure sticking later burst or curved; Is pressure to avoid in the condition of high speed and high pressure caused by a foreign body mold mold crushed; Ejection pressure is to prevent the products from the mold surface caused by bad. 4, time is divided into: the process of plastic mold, cooling time, sol time, drying time, cooling time, molten material, drying time, cycle time, injection time, holding time. Products molding needs certain cycle; Injection time decides the size of products; The holding time is for the sake of prevention and control of the melt flow back, cooling contraction of the role; Cooling time guarantee product curing, prevent deformation; Time is the guarantee of molten plastic fully; The drying time to ensure products do not become stretched, adverse factors. Processing and injection molding production frequently encountered bad appearance of bad reasons, such as broken, ripple, spray column marks, scratches, etc. , such as stripping, bubble, ill to take off the film this a series of problems are due to the above five factors. 5, location can be divided into: the process of plastic mold, mould opening position, push back stroke, metering stroke, leg volume, injection stroke, buffer capacity. Mould opening position is to ensure that the demoulding can take normal operation; Out back trip to the part of the spring return to the ejection limit protection function; Measuring stroke is to ensure there is enough plastic filling mold to ensure the quality of the products; Pine is used in the measuring room back after the melt volume increases, the internal pressure drop, prevent melt from optimally suited to drain out; Buffering capacity to prevent the screw head and the nozzle to contact mechanical damage accidents, can control precision. MORE + recommended product bottle PET health products bottle PET health products bottle PET health products bottle PET care bottle PET health products bottle PET health products bottle PET health products square bottle PET health products plastic PET health products bottle PET health products bottle PET health products bottle PET health products' Bowling bottle 】 PET health products bottles [ New arrival] Pet health products bottles 【 Preview 】 Acrylic health food bottle PS supplement bottle PS health food bottles of special tear cover cover