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Toothed belt and manufacturing method thereof

A manufacturing method and technology of toothed belts, applied in the directions of V-belts, belts, transmission belts, etc., can solve the problems of stress concentration relaxation and change, and achieve the effect of inhibiting interlayer peeling

Active Publication Date: 2020-10-16
MITSUBOSHI BELTING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Although the toothed belt of Patent Document 1 has a depression on the bottom surface of the belt groove, the shape of the depression is changed so that approximately half of the core wire is exposed in the depression, and stress concentration is alleviated.

Method used

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  • Toothed belt and manufacturing method thereof
  • Toothed belt and manufacturing method thereof
  • Toothed belt and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0101] In order to confirm the effect of the present invention, two kinds of toothed belts with different belt sizes (tooth pitch variable) were tested on the toothed belts of the examples (Examples 1-6) and comparative examples (Comparative examples 1-6). Endurance running test, bending fatigue etc. were investigated.

[0102] As an example, a polyurethane toothed belt was manufactured using the following dimensions (belts A, B) and constituent materials according to the above-mentioned manufacturing method. The unit area weight of the non-woven fabric is 25g / m 2 The weight per unit area of ​​embodiment 1,4, non-woven fabric is 50g / m 2 The weight per unit area of ​​embodiment 2,5 and nonwoven fabric is 200g / m 2 The six kinds of toothed belts of the embodiment 3,6.

[0103] (with size)

[0104] Belt A: Bandwidth 4.0mm, tooth pitch 1.0mm, number of teeth 746.

[0105] Belt B: Bandwidth 15.0mm, tooth pitch 8.0mm, number of teeth 150.

[0106] (constituent material)

[010...

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Abstract

The invention relates to a toothed belt (1). The toothed belt (1) comprises: a belt main body (5), which has teeth (2) and grooves (3) arranged alternately at a certain distance along the length direction and arranged on them The back (4) on the back side of the back; and the core wire (6), embedded on the predetermined pitch line of the above-mentioned back, the above-mentioned belt main body (5) includes: arranged on the lower part of the above-mentioned core wire (6) and comprising a thermoplastic polyurethane material The supporting layer (11) and the cured polyurethane elastomer other than the supporting layer (11), the above-mentioned supporting layer (11) is mixed with the above-mentioned polyurethane elastomer in the above-mentioned thermoplastic polyurethane-based material, and the above-mentioned thermoplastic polyurethane-based material and the above-mentioned The polyurethane elastomer cures as one.

Description

technical field [0001] The present invention relates to a toothed belt made of polyurethane and a manufacturing method thereof, and more particularly to a toothed belt made of polyurethane having a reinforced tooth bottom surface and a manufacturing method thereof. Background technique [0002] Toothed belts are used in synchronous transmissions that transmit rotation without slip. As power transmission belts for general industrial use and precision instruments, toothed belts made of polyurethane, which are excellent in appearance and hardly generate wear debris, are widely used. The toothed belt made of polyurethane is composed of the following structure: teeth and grooves are alternately provided at a certain interval in the length direction of the belt, and on the pitch line (PLD), glass fibers or aramid fibers are embedded in the back. The core wire formed by the rope. [0003] as in this application image 3 As described, such a toothed belt made of polyurethane is ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16G1/28B29C39/10
CPCF16G1/28F16G1/12F16G1/08B29C70/30B29C39/10F16G5/06F16G5/20B29K2075/00B29L2029/00B29K2275/00B29L2031/7094F16G1/16
Inventor 大崎侑
Owner MITSUBOSHI BELTING LTD