Forming device for PVC pipe

Abstract

The invention discloses a forming device for a PVC pipe. Very one circle a rotary plate rotates, an upper die holder can be driven to conduct die assembling operation one time, and the die assemblingspeed is higher; by adjusting the rotating speed of a motor, the die assembling speed can be adjusted, and manipulation is more facilitated; a worm gear and a worm cooperate with each other, so that the forming device has a self-locking function, die expansion can be effectively prevented during injection molding, and the injection molding quality of an injection molding piece can be effectively improved. The rotating diameter of the rotary plate can be adjusted, the lifting distance of the upper die holder can be flexibly adjusted, and the forming device is more flexible and convenient to use. A buffer device is arranged in a feeding hopper of an injection molding machine, a material is prevented from falling into the injection molding machine at high speed, the injection molding machineis prevented from being damaged, and the service life of the injection molding machine is prolonged. The feeding hopper introduces hot air discharged from an exhaust duct into a blower through a hot air recovery device, the hot air is recycled by the blower, the temperature in a plant is prevented from being raised, and the air in the plant keeps clean.

Description

technical field [0001] The invention relates to the technical field of injection molding equipment, in particular to a molding equipment for PVC pipes. Background technique [0002] PVC pipes are widely used in pipe networks for conveying liquids and gases, and people have higher and higher performance requirements for PVC pipes. PVC pipes are generally injection molded by injection molding machines. Injection molding machines are the main molding equipment for making thermoplastic or thermosetting plastics into plastic products of various shapes using plastic molding molds. The injection molding machine heats the plastic, applies high pressure to the molten plastic, and makes it shoot out to fill the mold cavity. Injection molding machines have the ability to form plastic products with complex shapes, precise dimensions, or dense textures with metal inserts at one time, and are widely used in national defense, electromechanical, automobiles, transportation, building materi...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a molding equipment for PVC pipes, to solve the problem that the mold clamping speed of the existing injection molding machine molding mechanism in the above-mentioned background technology is relatively slow, the flexibility is poor, and the mold clamping distance cannot be adjusted. As a result, it is impossible to close the dynamic and static molds of different thicknesses, and the material directly impacts the injection molding machine, causing damage. The air in the workshop is not clean, and the materials are polluted. The problem of time-space rotation of raw materials

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