Transmission belt manufacturing method
A manufacturing method and transmission belt technology, applied in the direction of belts, V-shaped belts, belts/chains/gears, etc., can solve the problems of large waste rubber
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no. 1 approach
[0056] figure 1 The cut-edge type V-belt B (drive belt) according to the first embodiment is shown. This V-belt B is used as a power transmission member of various machines. The belt length of the V-belt B is, for example, 500 to 3000 mm, the belt width is, for example, 7.5 to 32 mm, and the belt thickness is, for example, 5.5 to 20 mm.
[0057]The V-belt B according to the first embodiment has a rubber belt main body 10 including a compression layer 11 on the inner peripheral side and a tensile layer 12 on the outer peripheral side in the thickness direction. The core wire 13 is embedded in the middle portion in the thickness direction of the tensile layer 12 . The core wire 13 is provided in the tensile layer 12 in such a manner as to form a helix having a pitch in the width direction. A reinforcing cloth 14 is attached to the outer peripheral side of the tensile layer 12 , that is, the back surface of the belt. In the V-belt B, since the upper portions of the reinforci...
no. 2 approach
[0136] Figure 15 The V-belt B according to the second embodiment is shown. In addition, the part whose name is the same as that of 1st Embodiment is denoted by the same code|symbol as 1st Embodiment.
[0137] In the V-belt B according to the second embodiment, the compression layer 11 has a surface rubber layer 111 (surface member) of the surface portion and an inner center rubber layer 112 .
[0138] The surface rubber layer 111 and the center rubber layer 112 are formed of mutually different rubber compositions obtained by adding various additives to rubber components and kneading to obtain an uncrosslinked rubber composition. What is necessary is just to crosslink an uncrosslinked rubber composition by heating and pressurizing.
[0139]Examples of rubber components include ethylene-α-olefin elastomers (EPDM, EPR), chloroprene rubber (CR), chlorosulfonated polyethylene rubber (CSM), hydrogenated nitrile rubber (H-NBR), and the like. The rubber component is preferably one...
no. 3 approach
[0154] Figure 20 The V-belt B according to the third embodiment is shown. In addition, the part whose name is the same as that of 1st Embodiment is denoted by the same code|symbol as 1st Embodiment.
[0155] In the V-belt B of the third embodiment, the compression layer 11 has an inner central rubber layer 112 and a covering cloth 113 on the surface. The structure of the center rubber layer 112 is the same as that of the V-belt B according to the second embodiment.
[0156] The covering cloth 113 is made of, for example, a woven, knitted or non-woven fabric made of nylon fibers, polyester fibers, aramid fibers, cotton, or the like. The covering cloth 113 preferably has high stretchability. In order to impart adhesiveness to the cover cloth 113 with respect to the central rubber layer 112 of the belt main body 10 , an adhesive treatment may be applied to the cover cloth 113 .
[0157] Other configurations are the same as those of the V-belt B according to the first embodim...
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Abstract
Description
Claims
Application Information
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