1、 Working principle of injection molding machine the working principle of injection molding machine is similar to that of syringe for injection, It uses the thrust of screw (or plunger) to melt the plasticized molten state (i.e. viscous flow) plastic is injected into the closed mold cavity, and the product is obtained after curing and shaping. Injection molding is a cycle process, and each cycle mainly includes: quantitative feeding – melting and plasticization – pressure injection – mold filling and cooling – mold opening and taking parts. After taking out the plastic parts, the mold is closed for the next cycle.— Embossed carrier tape in Factory

2、 The structure of injection molding machine injection molding machine is divided into plunger injection molding machine and screw injection molding machine according to the plasticization mode; According to the transmission mode of the machine, it can be divided into hydraulic type, mechanical type and hydraulic mechanical (connecting rod) type; according to the * operation mode, it can be divided into automatic, semi-automatic and manual injection molding machines.— Embossed carrier tape in Factory

(1) Horizontal injection molding machine: This is the most common type. Its clamping part and injection part are on the same horizontal center line, and the mold is opened along the horizontal direction. Its characteristics are: low fuselage, easy for operation and maintenance; low center of gravity and stable installation; products can fall automatically by gravity after ejection, which is easy to realize full-automatic operation. At present, injection molding machines on the market This type is often used.

(2) Vertical injection molding machine: the clamping part and injection part are on the same vertical centerline, and the mold is opened along the vertical direction. Therefore, it covers a small area, easy to place inserts, convenient to load and unload the mold, and the materials falling from the hopper can be plasticized evenly. However, the products are not easy to fall automatically after ejection, and must be removed by hand, so it is not easy to realize automatic operation Type injection molding machine is suitable for small injection molding machines. Generally, injection molding machines below 60g are used more, and large and medium-sized machines are not suitable.— Embossed carrier tape in Factory

(3) Angle injection molding machine: its injection direction is on the same surface as the mold interface. It is especially suitable for plane products with gate traces not allowed in the processing center. Its floor area is smaller than that of horizontal injection molding machine, but the inserts placed in the mold are easy to fall obliquely. This type of injection molding machine is suitable for small machines.

(4) Multi mode rotary table injection molding machine: it is a special multi station injection molding machine, which is characterized in that the clamping device adopts a rotary table structure, and the mold rotates around the rotating shaft. This type of injection molding machine gives full play to the plasticizing capacity of the injection device, can shorten the production cycle and improve the production capacity of the machine, so it is especially suitable for long cooling and setting time or due to the placement of inserts The production of large quantities of plastic products requiring more auxiliary time, but because the clamping system is huge and complex, and the clamping force of the clamping device is often small, this kind of injection molding machine is widely used in the production of plastic soles and other products.