Injection device for injection molding machines

Abstract

The invention discloses an injection device for injection molding machines, and relates to mechanical industrial production equipment. The injection device comprises a connecting body, a material storage cylinder and an injection barrel, wherein one end of the connecting body is connected with the material storage cylinder, multiple material supply barrels are arranged above the material storage cylinder, material push pistons are respectively arranged in the material storage cylinder and the material supply barrels, a charging hole is formed in each material supply barrel, a material supply screw rod is arranged in each material supply barrel, the material storage cylinder is connected with the injection barrel, an injection screw rod is arranged in the injection barrel, the other end of the connecting body is connected with a nozzle, the nozzle is circular, and the diameter of the nozzle is 50-100mm. The injection device disclosed by the invention is simple in structure, and achieves an effect of supplying materials from multiple holes, and therefore, the device is easily used in production, and convenient to operate; the device can prevent the occurrence of material leakage and spillage, and therefore, the device is economical and reliable, and saves materials.

Description

technical field [0001] The invention relates to an injection device of an injection molding machine, which relates to the field of mechanical industrial equipment. technical background [0002] With the progress of society, the application of plastic products is more and more extensive, the production of plastics, the plastic molding industry is rising rapidly, so the improvement of the production of plastic machinery is also in progress, the injection molding machine is a typical mechanical equipment inside, the injection molding machine The injection device is to uniformly melt and plasticize the specified plastic to the molding temperature within the specified time during the injection molding cycle, and inject the molten material into the mold cavity at a certain pressure and speed. After the injection is completed , and maintain pressure on the molten material that has been injected into the mold cavity. The injection device of the traditional injection molding machine...

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Problems solved by technology

The injection device of the traditional injection molding machine adopts plasticization and injection step by step, so both synchronization and speed need to be improved, although some modern people have improved the injection device in the traditional technology, such as the application number 2011110323487.3 The injection device of a new type of injection machine includes connecting body, material storage cylinder, injection cylinder, pusher plug and other devices. Although it can realize the synchronization of plasticization and injection, it does not meet the needs of current production conditions. , there is no heat preservation device to maintain the temperature of the raw material in the supply cylinder, and the coaxial connection between the push rod and the storage cylinder is not enough. The pressure of the injection port is not strong enough to achieve the expected injection molding effect, and there is only one supply cylinder , the structure is single, and it cannot meet people's demand for plastic products with novel appearance and complex structure. For example, when injecting two different raw materials, the above-mentioned injection device has to remove the original remaining materials and then load new materials, which is cumbersome and complicated. Affect the quality of plastic molding

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