Rotation tractor for plastic pipe production line

Abstract

The invention discloses a rotation tractor on a plastic pipe production line, comprising a traction system; the traction system comprises a traction crawler (7) which is arranged on a crawler frame (8) and a driving mechanism (9) which drives the traction crawler (7); the invention adopts two or more sets of the traction systems which are completely the same; furthermore, the rotation tractor is provided with a rotation system; each set of traction system is connected with the rotation system. By installing a plurality of traction crawlers in the invention, each crawler is independently driven by a motor, and the driving system thereof is directly arranged on the side plate of the crawler frame and directly drives a traction chain wheel, therefore the structure is compact and simple. Lifting sliding seats at two ends of the crawler frame are respectively arranged on a front rotation disc and a rear rotation disc; each rotation disc is supported and positioned by three bearings which are uniformly distributed on the circumference. The rotation tractor of the invention can be used for producing a spiral hush pipe, with an extrusion die head which has a normal structure, and fully solves the problems of material leakage and material accumulation of rotation die head.

Description

technical field [0001] The invention belongs to the field of plastic pipe production equipment, in particular to a rotary tractor on a plastic pipe production line Background technique [0002] At present, the haul-off machine on the plastic pipe extrusion production line at home and abroad generally adopts the crawler-type haul-off machine. [0003] For example, the Chinese Patent Application No. 00214981.8 is a utility model patent for a rotary tractor, which discloses a rotary tractor formed by processing a steel-plastic composite pipe or a steel pipe. The chain drive wheel, chain, bevel gear and transmission shaft connected by rotation are combined. The large sprocket drives the frame to rotate, thereby driving the pinion gear to rotate, and the pinion gear rotates around the large gear, thereby driving the traction mechanism combined on the frame to rotate. The steel-plastic composite pipe or steel pipe moves linearly on the tractor. [0004]...

AI Technical Summary

Problems solved by technology

Disadvantages of this method: the structure of the extrusion die is complex, and material leakage and accumulation are prone to occur. Especially in the production of PVC pipes, the accumulation of material will cause yellow lines or even black lines on the pipe, which seriously affects the quality of the pipe. If there are no materials, it is necessary to remove the mold and clean the mold, which greatly reduces the production efficiency and the labor intensity of the workers is also high.

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