Power-input speed-change mechanism for inverted-triangular tri-screw extruder

Abstract

The invention relates to a speed-change device, in particular to a power-input speed-change mechanism for an inverted-triangular tri-screw extruder. The speed-change mechanism comprises a box body and a reducing mechanism which is fixedly arranged in the box body and provided with a power input shaft (1) and power output shafts (14,15 and16), the power input shaft (1) and the power output shafts (14,15 and 16) are fixedly arranged in the box body, the power input shaft (1) drives the power output shaft (15) to rotate to output power by a change-gear set, the power output shafts (14 and 16) are driven to rotate to output power by a component power transmission mechanism, and the power output shafts (14,15 and 16) are arranged like an inverted triangle by using the end surface center of thepower output shaft (15) as a vertex and using the end surface centers of the power output shafts (14 and16) as two bottom edge endpoints. By adopting the technical scheme, the power output shafts provide even bearing power so that the bearing capability of the transmission device is greatly improved to further provide higher output torque.

Description

technical field [0001] The invention relates to a speed reduction device, in particular to a speed change mechanism used on the power input end of an inverted triangle three-screw extruder. Background technique [0002] At present, in the field of plastic compounding, parallel twin-screw extruders are commonly used, and its transmission is a parallel two-axis output. With the continuous development of the modern plastic industry, especially the wide application of high-filling and high-dispersion materials and the requirements for low energy consumption, rubber and plastic processing equipment is developing in the direction of diversification and multi-screw. Compared with the traditional twin-screw extrusion system, the three-screw extrusion system has better splitting effect and more times of shearing, that is, better distribution mixing and dispersion mixing, and has a larger exhaust interface area, which is more conducive to exhaust operation , which minimizes the impac...

AI Technical Summary

Problems solved by technology

Compared with the traditional twin-screw extrusion system, the three-screw extrusion system has better splitting effect and more times of shearing, that is, better distribution mixing and dispersion mixing, and has a larger exhaust interface area, which is more conducive to exhaust operation , which minimizes the impact of exhaust on output and has the advantages of lower energy consumption, especially the inverted triangle three-screw extruder has three meshing zones, which is equivalent to three pairs of twin-screws acting at the same time. The number of times of shearing is doubled higher than that of the twin-screw. Under the same screw length-to-diameter ratio, the mixing effect is 3 times that of the twin-screw. The components are easily homogenized and granulated, and the material is on multiple levels in space. Fully exchange flow to achieve a good plasticizing and dispersing effect, and the feeding and conveying are also very stable, especially for the production of multifunctional masterbatches such as carbon black shielding materials, double anti-static masterbatches, and antistatic masterbatches. The cost is high, and the addition amount is required to be as small as possible, and the dispersion is as uniform as possible, so that excellent effects can be obtained with a small amount of addition; and like PP halogen-free flame retardant, the addition of a large amount of halogen-free flame retardant can achieve halogen-free flame retardant. It is flame retardant, but uneven dispersion will not only affect the physical and mechanical properties of the product, but also affect the flame retardant effect

With this technical solution, although the input power can be divided into parallel three-way output in the same direction, at the same speed, at the same axis and at the same torque, which improves the production efficiency, it cannot provide the power source for the inverted triangle three-screw reducer. It cannot provide the basis for power transmission for specific materials; and it is based on the operating basis that the greater the input power, the higher the work efficiency. When the input power of the power source is greater, since each output shaft of the structure has only one gear shaft to provide power, making The load-carrying capacity of the transmission device is difficult to improve, that is, if the torque is too large, the gear shaft is often easily broken, so it cannot withstand a large power source input, so that the output torque is small, and the single tooth rotation cannot offset the radial direction of each output shaft. Unstable in force, structure and lifetime

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