Radial extruding pipe making machine pressing head

Abstract

The invention relates to a radial extruding pipe making machine pressing head. The radial extruding pipe making machine pressing head comprises a circular material distributing disc, an upper polishing tile, a lower polishing tile, an outer shaft and an inner shaft, wherein the material distributing disc, the upper polishing tile and the lower polishing tile are arranged from top to bottom, the diameters of the material distributing disc, the upper polishing tile and the lower polishing tile are sequentially increased, the inner shaft is arranged in the outer shaft and forms reversal rotationwith the outer shaft, the outer shaft is fixed to the center of the material distributing disc and the center of the upper polishing tile, the inner shaft is fixed to the center of the lower polishingtile, and multiple circular deficient installing holes are formed in the edge of the material distributing disc in an array mode; and the radial extruding pipe making machine pressing head further comprises multiple upper extrusion rolls and multiple lower extrusion rolls, wherein the upper extrusion rolls are arranged on the edge of the upper polishing tile in an array mode, at least parts of the upper extrusion rolls are located over the installing holes and do not exceed the edge of the upper polishing tile, the upper extrusion rolls coaxially rotate, the lower extrusion rolls are arrangedon the edge of the lower polishing tile in an array mode, parts of the lower extrusion rolls do not exceed the edge of the lower polishing tile, and the lower extrusion rolls eccentrically rotate. According to the radial extruding pipe making machine pressing head, through lower roll eccentric design of the lower extrusion rolls, the compression ratio of pipe making concrete can be changed by adjusting the eccentric magnitude, and then a better extrusion effect is achieved.

Description

technical field [0001] The invention relates to the field of concrete pipe preparation, in particular to a pressure head of a radial extrusion pipe making machine. Background technique [0002] Existing concrete pipes are usually prepared by using a radial extrusion machine, specifically by extruding concrete by rotating an extrusion head in a mold. [0003] Existing extrusion heads are shown in Chinese patent CN 107599155 A, "A extrusion forming head of a pipe making machine is characterized in that it includes a cylinder, an inner shaft, and an outer shaft, the outer shaft is a hollow structure, and the concentric sleeve Placed outside the inner shaft, the lower end of the inner shaft is connected to the cylinder, and the inner shaft and the outer shaft can rotate relatively; an annular support plate is arranged on the upper part of the outer shaft, and several brackets are set above the annular support plate for Sprinkle the concrete to the surrounding blocks; on the per...

AI Technical Summary

Problems solved by technology

", and in the actual extrusion process, due to the characteristics of the concrete itself, the concrete will have different densities due to the difference in compression strength after molding (that is, the compaction situation). Using the extrusion head as described in the above patent, The adjustment of the concrete compression ratio during the pipe making process cannot be realized, and the preparation of better performance concrete pipes cannot be realized

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