CN110744848A

CN110744848A - Production method of escalator roller

Info

Publication number: CN110744848A
Application number: CN201911041839.9A
Authority: CN
Inventors: 张国良
Original assignee: Jiangyin Pfiter Elevator Parts Co Ltd
Current assignee: Jiangyin Pfiter Elevator Parts Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-02-04

Abstract

The invention provides a production method of an escalator roller, wherein the escalator roller consists of a bearing wrapping ring (1) and a rolling bearing (2), the inner diameter phi 1 of the bearing wrapping ring (1) is smaller than the outer diameter phi 2 of the rolling bearing (2), and the difference range of the inner diameter phi 1 of the bearing wrapping ring (1) and the outer diameter phi 2 of the rolling bearing (2) is 2mm-5 mm; the bearing wrapping ring 1 is made of thermoplastic elastic plastics; the method is characterized by comprising the following specific steps: step one, manufacturing a wear-resistant layer: manufacturing a bearing wear-resistant wrapping ring in an injection molding machine by using a mold; step two, pressing in: pressing the rolling bearing into the wear-resistant wrapping ring by using external force; step three, polishing: polishing the outer surface of the wear-resistant packing ring to make the surface smoother and meet the requirement of the required overall outer diameter; step four, checking: and (5) carrying out smoothness and size inspection. The production method of the escalator roller is simple in production process, and the wear-resistant layer tightly wraps the inner bearing and is not easy to fall off.

Description

Production method of escalator roller

Technical Field

The invention belongs to the technical field of roller structures, and particularly relates to a production process of a high-strength escalator roller.

Background

Along with economic development, more and more public places set up automatic escalator, if at airport, railway station, subway station and market, automatic escalator convenient to use is swift, receives liking of passenger deeply. Because the escalator circularly rotates in a chain type rolling manner, a large number of rollers are needed to be used for supporting rotating parts of the escalator, and because the escalator is generally used in occasions with large passenger flow, the escalator generally rotates continuously and plays an important role as the rollers for ensuring the safe operation of the escalator. Most of elevator rollers in the existing market are made of metal, the manufacturing cost of the metal rollers is very high, certain noise can be generated during use, the wear resistance is poor, and the damage rate is very high. Some elevator rollers also have an elastic wear-resistant layer which is formed by injection molding on the cylindrical surface of a metal rolling bearing, but the process of injection molding the wear-resistant layer on the metal is difficult to realize kneading firmness and is easy to fall off when in use.

In the prior art, patent publication No. CN108502690B "a high-strength escalator roller" provides a high-strength escalator roller, which can achieve the purpose of high-strength connection between the roller and the roller shaft by arranging a clamping disc unit, a connecting column unit and an electromagnet unit on the inner ring of the roller. The structure has the defects of complex process, high cost and the like.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the production process of the escalator roller, which is not easy to fall off a wear-resistant layer and has a simple structure. The technical scheme of the invention is as follows:

the escalator roller consists of a bearing wear-resistant wrapping ring 1 and a rolling bearing 2, wherein the inner diameter phi 1 of the bearing wear-resistant wrapping ring 1 is smaller than the outer diameter phi 2 of the rolling bearing 2, and the difference between the inner diameter phi 1 of the bearing wear-resistant wrapping ring 1 and the outer diameter phi 2 of the rolling bearing 2 is 2mm-5 mm; the bearing wear-resistant packing ring 1 is made of thermoplastic elastic plastic; the method comprises the following specific steps:

step one, manufacturing a wear-resistant layer: manufacturing a bearing wear-resistant wrapping ring 1 in an injection molding machine by using a mold;

step two, pressing in: pressing the rolling bearing 2 into the bearing wear-resistant wrapping ring 1 by using external force;

step three, polishing: the outer surface of the wear-resistant packing ring 1 of the bearing is polished to make the surface smoother and meet the requirement of the required overall outer diameter;

step four, checking: and (5) carrying out smoothness and size inspection.

Has the advantages that:

the production method of the escalator roller is simple in production process, and the wear-resistant layer of the bearing wear-resistant wrapping ring tightly wraps the inner rolling bearing and is not easy to fall off.

Drawings

Fig. 1 is a schematic structural view of an escalator roller according to an embodiment of the invention.

Detailed Description

The invention is further described with reference to the following figures and specific examples.

As shown in fig. 1, the escalator roller structure of the embodiment is schematically illustrated. According to the production method of the escalator roller, the escalator roller consists of a bearing wear-resistant wrapping ring 1 and a rolling bearing 2, the inner diameter phi 1 of the bearing wear-resistant wrapping ring 1 is smaller than the outer diameter phi 2 of the rolling bearing 2, and the difference between the inner diameter phi 1 of the bearing wear-resistant wrapping ring 1 and the outer diameter phi 2 of the rolling bearing 2 is 2mm-5 mm; the bearing wear-resistant packing ring 1 is made of thermoplastic elastic plastic. The section of the bearing wear-resistant wrapping ring 1 is concave, the rolling bearing 2 is matched with the bearing wear-resistant wrapping ring 1, and part of the ring-shaped body of the rolling bearing 2 is embedded in a concave ring groove of the bearing wear-resistant wrapping ring 1.

The specific process steps are as follows:

step four, checking: and (5) carrying out smoothness and size inspection.

The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.

Claims

1. The escalator roller consists of a bearing wear-resistant wrapping ring (1) and a rolling bearing (2), wherein the inner diameter phi 1 of the bearing wear-resistant wrapping ring (1) is smaller than the outer diameter phi 2 of the rolling bearing (2), and the difference between the inner diameter phi 1 of the bearing wear-resistant wrapping ring (1) and the outer diameter phi 2 of the rolling bearing (2) ranges from 2mm to 5 mm; the bearing wear-resistant wrapping ring (1) is made of thermoplastic elastic plastic; the method is characterized by comprising the following specific steps:

step one, manufacturing a wear-resistant layer: manufacturing a bearing wear-resistant wrapping ring (1) in an injection molding machine by using a mold;

step two, pressing in: pressing the rolling bearing (2) into the bearing wear-resistant wrapping ring (1) by using external force;

step three, polishing: the outer surface of the bearing wear-resistant packing ring (1) is polished to be smoother, so that the requirement on the required overall outer diameter is met;

step four, checking: and (5) carrying out smoothness and size inspection.