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Toothed belt

A toothed belt and tooth technology, applied in the direction of transmission belts, belts/chains/gears, mechanical equipment, etc., can solve problems such as unseen belt speed changes, improve dimensional stability, improve bendability, and ensure dimensional stability sexual effect

Active Publication Date: 2016-11-30
MITSUBOSHI BELTING LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no record focusing on belt speed variation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0060] Such as figure 1 As shown, the toothed belt 1 of the first embodiment is used while being wound between the driving pulley 5 and the driven pulley 6 . Thereby, synchronous transmission can be performed between the driving pulley 5 and the driven pulley 6 .

[0061] The toothed belt 1 is composed of a plurality of teeth 2 along the belt length direction, a core wire 3 as a reinforcing core on the pitch line of the toothed belt 1 , and a back portion 4 in which the core wire 3 is embedded. and, figure 2 The distance between the tooth parts 2 shown in (B), that is, the tooth pitch is 0.45 to 0.60 mm. The shape of the tooth portion 2 is a scalloped shape, but it is not limited thereto, and may be arbitrarily selected from a cross-sectional trapezoidal shape, a cross-sectional triangular shape, and the like.

[0062] The tooth portion 2 and the back portion 4 of the toothed belt 1 are made of a polyurethane resin composition. The polyurethane resin composition is obtain...

no. 2 approach

[0072] Next, a second embodiment of the present invention will be described. It should be noted that descriptions of the same elements as those in the first embodiment will be appropriately omitted. That is, for elements not specifically described below, the same explanations as those corresponding to elements in the above-mentioned first embodiment are applied.

[0073] The toothed belt 1 according to the second embodiment includes a plurality of tooth portions 2 along the belt length direction, a core wire 3 as a reinforcing core on the pitch line of the toothed belt 1 , and a back portion 4 in which the core wire 3 is buried. . and, figure 2 The distance between the tooth parts 2 shown in (B), that is, the tooth pitch is 0.45 to 0.71 mm.

[0074] The core wire 3 is a stranded wire formed by twisting polyarylate fiber filaments, for example, a total of 110 dtex monofilaments (original yarn) bundled and paralleled with 20 polyarylate fiber filaments (filament fineness) wi...

Embodiment

[0076] Next, using the toothed belt having the structure of each embodiment of the present invention as an example and the toothed belt not having the structure of each embodiment as a comparative example, 1. Speed ​​variation test, 2. Endurance movement Test, 3. with dimensional stability test, 4. with bending test.

[0077] (1. Speed ​​change rate test)

[0078] In the speed change rate test, the laser Doppler was used to measure the image 3 The two-axis layout shown makes the speed of the toothed belt 1 uneven when moving, and the belt speed variation rate (%) at the primary meshing frequency was obtained by frequency analysis.

[0079] Specifically, as image 3As shown, a toothed belt 1 is stretched between the driving pulley 5 and the driven pulley 6 (the driving pulley 5 and the driven pulley 6 are toothed pulleys with the same number of teeth, pitches, and pitch circle diameters). The tension of the driven pulley 6 is moved, and a predetermined axial load (5N, 10N, ...

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Abstract

The present invention pertains to a toothed belt equipped with a back section, a tooth section, and core wires embedded in the back section. The back section and the tooth section include a urethane resin composition, and the core wires are twisted cords comprising a group of glass fiber filaments, or are twisted cords comprising a group of polyarylate fiber filaments. When the core wires are twisted cords comprising a group of glass fiber filaments, the pitch of the tooth section is 0.45-0.60 mm, the diameter of the glass fiber filaments is 6-9 microns, and the wire diameter of the core wires is 0.14-0.20 mm. When the core wires are twisted cords comprising a group of polyarylate fiber filaments, the pitch of the tooth section is 0.45-0.71 mm, and the wire diameter of the core wires is 0.14-0.28 mm.

Description

technical field [0001] The present invention relates to a toothed belt capable of synchronous transmission between pulleys used in OA equipment such as printers and other general industries. Background technique [0002] Conventionally, high positioning accuracy has been required in carriage drive represented by inkjet printers or precision drive accompanied by reciprocating motion of workpieces such as actuators, so toothed belts capable of synchronous transmission have been used. In printers in particular, in recent years, commercialization of high-quality color printing and high-speed processing thereof has rapidly progressed. In addition, in order to perform high-precision positioning so as not to cause printing unevenness, etc., it is required to reduce belt speed variation (speed unevenness) in the intermeshing cycle. [0003] As a technique for reducing belt speed variation (speed unevenness), a toothed belt using a glass core wire with a pitch of 0.65 to 0.85 mm is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16G1/28F16G1/14F16H7/02
CPCF16H7/02F16G1/16F16G1/28F16H7/023
Inventor 赤代智昭饭塚信吾
Owner MITSUBOSHI BELTING LTD
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