ความรู้ทางทฤษฎีเกี่ยวกับสกรูเครื่องฉีดพลาสติก: The screw is a key component of the plasticized part, and it is in direct contact with the plastic. The effective length of the plastic passing through the screw groove passes through a long thermal history and undergoes a three-state (glass state, viscoelastic state, and viscous fluid state). The screw The length, geometry, …

Introduction Compared with ordinary runner molds, hot runner molds have significant advantages such as time-saving, material-saving, ประสิทธิภาพสูง, and stable quality. อย่างไรก็ตาม, it was once easy to cause failures in use, which affected its wide application. With the technological progress of the mold industry, hot runner molding has made great progress in runner melt temperature control, structural reliability, and hot runner …

Raw edges a) Confirm whether the number of frames and clamping forceof the injection machine are sufficient b) Confirm whether the pressure is too high 1) If the unsaturated sample still has burrs, it means that the mold clamping is not good or the fault is broken. 2) If the mold clamping is not good and the size is too …

injection molding conditions is the important thing for workshop owner to master. Injection molding is an industry with a wide range of knowledge, technology and practice. Plastic raw materials, toners, nozzle materials, แม่พิมพ์, เครื่องฉีดขึ้นรูป, peripheral equipment, fixtures, sprays, various auxiliary materials and packaging materials are used in the injection molding production process, which brings a lot of work to the management …

In the injection molding process of plastics, เทอร์โมพลาสติก, เนื่องจากการเปลี่ยนแปลงปริมาตรที่เกิดจากการตกผลึก, ความเครียดภายในที่แข็งแกร่ง, ความเค้นตกค้างจำนวนมากที่แข็งตัวอยู่ในชิ้นส่วนพลาสติก, การวางตัวของโมเลกุลที่แข็งแกร่งและปัจจัยอื่นๆ, so compared with thermoset plastics, อัตราการหดตัวมีขนาดใหญ่ขึ้น. อัตราการหดตัวกว้างและทิศทางชัดเจน. นอกจากนี้, การหดตัวหลังการขึ้นรูป, annealing or humidity …

The screw fracture temperature is also related, but it is rare, almost all of the screw itself is of poor toughness, or the screw has been used for a long time, refurbish the screw! The injection molding materials are rough. ตัวอย่างเช่น, adding GF [glass fiber] to the injection molding materials is the most expensive screw and machine! This injection molding material has poor …

Different types of steel are used as plastic molds, and their chemical composition and mechanical properties are different, so the manufacturing process routes are different; similarly, different types of plastic mold steels use different heat treatment processes. This section mainly introduces the manufacturing process route and the characteristics of the heat treatment process of the plastic mold.   Explanation of …

The effect of back pressure on injection molding is very important, and it directly affects the filling of the melt and the quality of the plastic parts.   (1) Proper back pressure can improve the quality of products ①It can compact the melt in the barrel, increase the density, and improve the injection volume, product weight and dimensional stability;   ②The …

To do a good job in the management and prevention of china injection molding machine failures, it is necessary to grasp the causes of china injection molding machine failures, accumulate information and data about frequent failures and typical failures, carry out failure analysis, pay attention to the study of failure rules and failure mechanisms, and strengthen daily maintenance and inspections. …

1. Preparations before starting the china injection molding machine 1. Wear the safety protective clothing prescribed by the workshop before starting production. 2. Clean up the environment around the equipment, and don’t store anything unrelated to production. 3. Clean up the debris inside and outside the workbench and equipment, wipe the injection seat guide rail and the tie rod of …

Today let us talk about the principle, characteristics, application and process of injection molding by injection molding machine. 1. The principle of injection molding. Add granular or powdered plastic into the hopper of the injection machine. The plastic is heated and melted in the injection machine to keep it flowing, and then injected into a closed mold under a certain …

There are always problems with the injection part of the injection molding machine, how to solve it? 1. Cannot shoot glue Approach: 1) The nozzle is blocked by foreign matter. Check whether the nozzle is blocked, clean or replace the nozzle. 2) The glue nozzle is broken. Disassemble the flange to check whether the glue nozzle is broken, and replace …