Injection mold and manufacturing method of rotating body

Abstract

The invention relates to the technical field of injection molding, and particularly relates to an injection mold and a manufacturing method of a rotating body. The injection mold is used for forming the hollow rotating body, wherein a first spiral structure is arranged on the outer wall of the rotating body, and a second spiral structure is arranged on the inner wall of the rotating body. The injection mold comprises a mold body, a spiral forming mechanism and a driving mechanism, wherein the spiral forming mechanism is arranged on the mold body and comprises an outer mold core and an inner mold core, when the outer mold core and the inner mold core are located at the forming positions, the inner mold core is arranged in the outer mold core in a penetrating mode, at least part of a forming cavity is formed between the outer mold core and the inner mold core, a first spiral forming structure for forming the first spiral structure is arranged on the outer mold core, and a second spiral forming structure for forming the second spiral structure is arranged on the inner mold core; and the driving mechanism is arranged on the mold body and used for driving the inner mold core and at least part of the first spiral forming structure to spirally move so as to be separated from the rotating body. The shapes, the number and the parameters of the spiral structures formed by the injection mold are not limited.

Description

technical field [0001] The invention relates to the technical field of injection molding, in particular to a manufacturing method of an injection mold and a rotating body. Background technique [0002] The vacuum cleaner is a cleaning device that uses a motor to drive the blades to rotate at high speed, and generates negative air pressure in the sealed housing to absorb dust. The vacuum cleaner is provided with a rolling brush, and the dust is raised by the rolling brush rotating and beating the ground, thereby improving the dust collection effect. [0003] The roller brush includes a roller brush body and a cleaning piece. The rolling brush body is provided with helical structures such as helically extended ribs or grooves for installing cleaning parts. The existing rolling brush body is generally of a solid structure, resulting in a large weight of the rolling brush body and large energy consumption required for the rolling brush to rotate. Part of the roller brush body...

AI Technical Summary

Problems solved by technology

The existing roller brush body is generally a solid structure, resulting in a large weight of the roller brush body and a large energy consumption when the roller brush rotates

Part of the roller brush body is a hollow structure of injection molding. The outer wall of the roller brush body is provided with a spiral structure, and the inner wall is a smooth cylindrical surface, resulting in a thicker wall thickness of the roller brush body and higher energy consumption during the rotation process of the roller brush body. Big

Moreover, the shape and quantity of the helical structure provided on the outer wall of the brush body and the rotation angle around the axis of the brush body are limited, which affects the cleaning effect of the brush

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