Screw blade coiling and molding method, and molding equipment thereof

Abstract

The present invention relates to a convolution forming method of a helical blade and a forming device thereof. A steel belt is fixed on a fixing mould; the fixing mould and a dynamic mould are closed to hold the steel belt; the transmission shaft of a convolution machine rotates to drive the steel belt to vertically rotate along with the central mandril of the fixing mould, so that the helical blade with the helical surface being overlapped is produced; the helical blade is stretched by a professional stretching device to obtain the required helical distance. The present invention also relates to a convolution forming device of a helical blade; an output shaft of a reducer of the device is connected with a transmission shaft through a transmission element; one side of the fixing mould is firmly connected with one end of the transmission shaft, and the other side of the fixing mould is provided with a central mandril; the two sides of the dynamic mould are supported on a guiding device; the rear side of the guiding device is connected with a press-molding device. A material guiding device is arranged at the outer side of the working surface of the fixing mould and the dynamic mould. The convolution forming method of the present invention reduces the production procedures, and improves the material utilization rate and the production efficiency; the thickness of the produced helical blade is equal, and the mechanics performance is uniform.

Description

technical field [0001] The invention relates to a forming method of a spiral blade, in particular to a vertical winding forming method of the spiral blade, and also relates to winding forming equipment of the spiral blade, which belongs to the technical field of pressure processing. Background technique [0002] Spiral blades are widely used as accessories of material conveying machinery. At present, the forming methods of spiral blades mainly include the following types: [0003] (1) Tailored welding combined tension forming [0004] First cut the steel plate into flange blanks, then tailor-weld the blanks piece by piece to form a barrel-shaped merged helix, and then weld one end of the merged helix on the transmission shaft to position, and the other end is pulled by a high-power pulling device. Stretch into spiral blade segments, and finally weld each spiral body segment by segment to form the final spiral blade. This method has low production efficiency, labor and time...

AI Technical Summary

Problems solved by technology

[0011] These two patents disclose forming equipment that adopts the rolling method to manufacture spiral blades. This forming equipment and manufacturing method have the advantages of high material utilization rate and high production efficiency. However, the thickness of the rolled spiral blades is not uniform. , the outer edge is thin and the inner edge is thick, it is difficult to achieve the required pitch, and the material waste in the debugging process is relatively large, so it is only suitable for mass production of spiral blades

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