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Cold end mold pressing method for rubber handrail belt production

A handrail and cold end technology, which is applied in the field of cold end molding of rubber handrails, can solve problems such as affecting performance, prone to tearing or defects, and reducing material properties, so as to reduce maintenance rates, reduce tearing or defects, cost reduction effect

Active Publication Date: 2021-02-02
EHC ELEVATOR RAIL SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Rubber handrails usually adopt segmental high-temperature molding vulcanization. Because most rubber materials are vulcanized for too long, over-vulcanization will occur, and the physical properties of the material will be greatly reduced, which will affect the performance. Therefore, in order to ensure the transition area between the front section and the rear section (Cold end) The rubber material can reach a reasonable degree of vulcanization after two vulcanization operations. This area adopts cooling molding vulcanization, but when the vulcanization is released once, the rubber material is in a semi-vulcanized state, which is prone to tearing or defects

Method used

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  • Cold end mold pressing method for rubber handrail belt production

Examples

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Comparison scheme
Effect test

Embodiment 1

[0023] see figure 1 , in an embodiment of the present invention, a cold-end molding method for producing a rubber handrail, comprising the following steps:

[0024] S1: Clean the surface of the handrail before molding and vulcanizing;

[0025] S2: According to the size of the mold cavity, the polyester film is cut and pasted on the cold end area of ​​the handrail;

[0026] S3: Put the handrail into the mold and carry out high-temperature molding vulcanization;

[0027] S4: Demoulding, tearing off the polyester film, and performing secondary molding vulcanization.

[0028] Preferably, the standard for cleaning the handrail in the step S1 is that there is no dust or particles attached to the surface of the handrail.

[0029] Preferably, the cutting of the polyester film in the step S2 is to cut two sheets of the polyester film according to the total width of the rubber handrail to be molded.

[0030] Preferably, the cutting width of the polyester film is the total width of t...

Embodiment 2

[0038] see figure 1 , in an embodiment of the present invention, a cold-end molding method for producing a rubber handrail, comprising the following steps:

[0039] S1: Clean the surface of the handrail before molding and vulcanizing;

[0040] S2: According to the size of the mold cavity, the polyester film is cut and pasted on the cold end area of ​​the handrail;

[0041] S3: Put the handrail into the mold and carry out high-temperature molding vulcanization;

[0042] S4: Demoulding, tearing off the polyester film, and performing secondary molding vulcanization.

[0043] Preferably, the standard for cleaning the handrail in the step S1 is that there is no dust or particles attached to the surface of the handrail.

[0044] Preferably, the cutting of the polyester film in the step S2 is to cut two sheets of the polyester film according to the total width of the rubber handrail to be molded.

[0045] Preferably, the cutting width of the polyester film is the total width of t...

Embodiment 3

[0053] see figure 1 , in an embodiment of the present invention, a cold-end molding method for producing a rubber handrail, comprising the following steps:

[0054] S1: Clean the surface of the handrail before molding and vulcanizing;

[0055] S2: According to the size of the mold cavity, the polyester film is cut and pasted on the cold end area of ​​the handrail;

[0056] S3: Put the handrail into the mold and carry out high-temperature molding vulcanization;

[0057] S4: Demoulding, tearing off the polyester film, and performing secondary molding vulcanization.

[0058] Preferably, the standard for cleaning the handrail in the step S1 is that there is no dust or particles attached to the surface of the handrail.

[0059] Preferably, the cutting of the polyester film in the step S2 is to cut two sheets of the polyester film according to the total width of the rubber handrail to be molded.

[0060] Preferably, the cutting width of the polyester film is the total width of the...

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Abstract

The invention discloses a cold end mold pressing method for rubber handrail belt production. The cold end mold pressing method comprises the following steps of S1, cleaning the surface of a handrail belt before mold pressing vulcanization; S2, cutting a polyester film according to the size of a mold cavity, and patching the polyester film to a cold end area of the handrail belt; S3, putting the handrail belt into a mold, and carrying out high-temperature mold pressing vulcanization; and S4, carrying out demolding, tearing off the polyester film, and carrying out secondary mold pressing vulcanization. According to the method, the polyester film blocks the contact between a rubber material and the mold in the mold pressing vulcanization process, and meanwhile the semi-vulcanized rubber material is further shaped, so that the rubber material is prevented from being torn during demolding; and after the primary mold pressing vulcanization, the polyester film is torn off, and the rubber material does not generate demolding tearing or flaws after the secondary mold pressing vulcanization; By means of the improvement method, tearing or flaws generated when the rubber material in the cold end area is demolded are reduced, the maintenance rate of the handrail belt product is reduced, the appearance quality of the handrail belt product is guaranteed, the mold does not need to be modified,and the cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of rubber handrail production, in particular to a cold end molding method for rubber handrail production. Background technique [0002] Escalators or moving walks have been widely used in public places, and the handrails used in conjunction with them are mostly rubber handrails. Rubber handrails are usually made by high-temperature molding and vulcanization. This manufacturing method makes the handrail products prone to tearing or flaws when they are demolded in a high-temperature environment, especially at the cold end of the mold, which seriously affects the appearance of the handrail. [0003] At present, the rubber material handrail is manufactured by continuous segmental high-temperature molding vulcanization, and the rubber material in the cold end area is subjected to secondary cooling molding vulcanization. During the first demoulding, because the rubber material is in a semi-vulcanized state, it is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/14B29C43/52B29C43/32B29C35/02B29L29/00
CPCB29C43/14B29C43/52B29C43/32B29C35/02B29L2029/00
Inventor 李丹周滨
Owner EHC ELEVATOR RAIL SHANGHAI CO LTD