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Strength Analysis Of Screw Barrel Jun 16, 2017

Strength analysis of Screw Barrel


Screw Barrel is the molten plastic injection into the mold, after cooling is the product. Use a very wide range, according to different plastics, the use of different places. Screw Barrel is the plastic processing industry in the use of the largest processing machinery, not only a large number of products can be directly produced by the Screw Barrel, and it is also composed of injection blowing the key equipment. Then the Screw Barrel of the force and strength of what is it?

Screw-type Screw Barrel consists of four parts: injection device, clamping device, hydraulic drive and electrical control system. Injection device, composed of barrel, Screw Barrel, nozzle, hopper, measuring device, screw drive, injection cylinder and injection seat moving cylinder and other components. Its main role is to make plastic melting and plastic uniform, and then under a certain pressure and temperature will be quantitative melt into the injection mold. Clamping device, also known as clamping device. By the mold pressure cylinder, dynamic template, set the template, mold clamping mechanism, rod, stripping device safety gate and other components. Its main role is to ensure that the mold according to the provisions of the procedures and speed to open and close, and to ensure that there is sufficient mold clamping force to close the mold. The clamping device is divided into three categories: hydraulic, mechanical and hydraulic / mechanical. Hydraulic drive and electrical control system to ensure that the Screw Barrel according to the injection process required by the procedures of pressure, speed, temperature and time to work accurately. Hydraulic transmission system consists of power oil pump, directional valve, throttle valve, pressure valve and fuel tank and so on. The electrical control system is composed of power control, action process control and heating control system.

 

Screw Barrel is the molten plastic injection into the mold, after cooling is the product. Use a very wide range, according to different plastics, the use of different places. Screw Barrel is the plastic processing industry in the use of the largest processing machinery, not only a large number of products can be directly produced by the Screw Barrel, and it is also composed of injection blowing the key equipment. Then the Screw Barrel of the force and strength of what is it?

 

When the Screw Barrel and the gearbox spindle with a long cylindrical surface with the Screw Barrel can be fixed at one end of the cantilever beam. The force state of the Screw Barrel during the extrusion process can simplify the screw force: the weight G; the torque required to overcome the material resistance M; the axial force P of the material pressure. Screw is generally due to long-term wear, the screw and the cylinder gap is too large can not be properly squeezed out of retirement, but also due to improper design or operation of the work stress exceeds the strength limit and destruction of the example. Therefore, the screw should also meet certain strength requirements. The dangerous section of the Screw Barrel is generally at the minimum thread diameter of the feed section.