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Method for producing drive belts, and drive belt

A technology of belts and cores, applied in transmission belts, belts/chains/gears, applications, etc.

Inactive Publication Date: 2018-11-09
ワルサーフレンダーゲーエムベーハー
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The production of toothed belts with a polyurethane (thermoset or thermoplastic) matrix in which a fiber-based tensile carrier, for example based on glass fibers or high-performance fibers, is embedded and with fabric on the tooth side presents particular challenges

Method used

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  • Method for producing drive belts, and drive belt
  • Method for producing drive belts, and drive belt
  • Method for producing drive belts, and drive belt

Examples

Experimental program
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Effect test

Embodiment Construction

[0123] The injection molding tool 20 has a tubular core 21 and a housing 22, wherein the core 21 has a toothed portion 25 on its outer periphery 24 corresponding to the cavity 23 of the tool 20, forming the "toothed geometry" of the core 21 and The inner surface 26 of the housing 22 corresponding to the cavity 23 is formed to be smooth.

[0124] The core 21 surrounds a central evacuation duct 27 . A number of suction ducts 29 , 30 are guided from the central evacuation duct 27 through the wall of the core 21 to the periphery of the core 21 .

[0125] The suction ducts 29 , 30 are each introduced at the peripheral surface 24 of the core 21 into the tooth base of the tooth geometry provided here and are again distributed in such a way that when passing through the central emptying duct 27 will be present in the cavity 23 When the atmosphere (air) in the cylinder is sucked out, a uniformly distributed negative pressure is generated on the peripheral surface 24 .

[0126] In ord...

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PUM

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Abstract

The invention relates to a method for producing drive belts (ZR) by moulding. A mould core (21) and an outer shell (22) of a mould (20) are provided for this purpose. The circumferential surface of the mould core (21) or the inner circumferential surface (26) of the outer shell (22) is provided with a geometry (24) which is to be replicated on the drive belt (ZR). A textile layer (G) is laid on the geometry. The mould core (21) is positioned in the outer shell (22), and therefore the mould core (21) and the outer shell (22) delimit a cavity (23) between them. It is optionally possible for a tension member (Z) to be arranged in the cavity (23) and for the cavity (23) to be sealed in relation to the surroundings, at least in the region of the geometry (24) which is to be replicated on the drive belt (ZR). The textile layer (G) is placed on the surfaces delimiting the geometry (24) and an elastomer base material is introduced into the cavity (23). The invention also relates to a drive belt.

Description

technical field [0001] The invention relates to a method for producing a drive belt. Background technique [0002] DE 10 2013 104 764 A1 contains a description of the different processes known in the prior art in the production of drive belts in general and in particular toothed belts. As a development of the prior art, a method for producing a belt with an embedded tension carrier is given therein, in which method the tension carrier is previously prefabricated. Here, the belt comprises a belt body made of polyurethane with elastic properties, which has a cover layer as the belt back and a substructure with a force transmission area, as well as a tension carrier embedded in the belt body and is prefabricated with polyurethane. Here, the reproducible polymer filling of the tension carrier cavity and the consequent high process reliability are ensured in that the tension carrier cavity of the tension carrier is at least partially filled with polyurethane by wetting the tens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B29D29/08B29C70/54F16G5/06
CPCB29D29/08F16G1/08F16G1/10F16G5/14F16G1/16F16G5/08F16G5/06B29K2075/00B29C70/541B29C45/2673F16G1/28F16G5/20B29C33/302
Inventor 安德列亚斯·朔尔岑西蒙-马丁·施密特
Owner ワルサーフレンダーゲーエムベーハー