Chair, die for machining chair and machining process of die

Abstract

The invention discloses a chair, and the chair comprises a chair surface, chair legs and reinforcing ribs; the chair surface, the chair legs and the reinforcing ribs are formed through one-time injection molding; the chair legs are perpendicular to the chair surface, and the reinforcing ribs are located at the bottom of the chair surface and used for connecting the chair surface and the chair legs. A chair machining process comprises the following machining steps: S1, pouring plastic used for machining a chair into a pouring gate of a mold, and after a cavity of the mold is filled with the plastic, performing cooling forming; S2, opening the front mold, pushing an ejector plate through an ejector rod hole, enabling an ejector pin and an ejector sleeve on the ejector plate to synchronouslymove upwards, pushing the chair out of a cavity, realizing demolding, and compressing a spring; S3, after the chair is demolded, enabling the spring to rebound, so that the ejection plate, the ejectorpin and the ejection sleeve are reset, and one-time injection molding is completed. The chair produced by the invention overcomes various defects of a plastic chair formed by combining metal tubes and plastics; meanwhile, the design that the chair legs are perpendicular to the chair surface enables the bearing of the plastic chair to reach the maximum value, the production process is simple, anda large amount of cost is saved.

Description

technical field [0001] The invention belongs to the technical field of chair production, and in particular relates to a chair, a mold for processing the chair and a processing technology thereof. Background technique [0002] Plastic chairs are daily necessities. There are roughly the following types of plastic chairs with tubular legs produced and sold by society: [0003] (1) Metal tubes are welded to form the chair foot, and the injection molded seat surface is embedded with nuts, and then assembled with screws. [0004] (2) Plastic tube is formed by injection molding, and one end of the plastic tube has screw teeth at the junction of the chair surface; a hollow plastic tube is formed with a blow molding machine, and there are screw teeth at the junction of the plastic tube and the chair surface. The injection-molded chair surface is formed with nut teeth to facilitate combination with plastic pipes to form a chair. [0005] Regardless of the above structures, they are ...

AI Technical Summary

Problems solved by technology

[0005] Regardless of the above structures, they are assembled and formed. This kind of chair has the disadvantages of insufficient load-bearing and easy loosening. At the same time, the production cost is relatively high, and manual assembly is required, which wastes human resources.

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