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Method and apparatus of manufacturing synchronous drive belt with teeth which are axially interlocked with mold surface

A technology for synchronous transmission and belts, which is applied in the direction of transmission belts, belts/chains/gears, belts, etc., and can solve problems such as damage to belt plates and mandrels

Inactive Publication Date: 2001-08-15
THE GOODYEAR TIRE & RUBBER CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such high force may damage the belt plate and spindle
Also, this method only works with belt plates that are not interlocked with the form
This makes this method limited to the manufacture of belt plates with axial or simple helical teeth

Method used

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  • Method and apparatus of manufacturing synchronous drive belt with teeth which are axially interlocked with mold surface
  • Method and apparatus of manufacturing synchronous drive belt with teeth which are axially interlocked with mold surface
  • Method and apparatus of manufacturing synchronous drive belt with teeth which are axially interlocked with mold surface

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Embodiment Construction

[0050] The accompanying drawings illustrate a synchronous transmission belt and its manufacturing method and equipment.

[0051] refer to figure 1 and figure 2 , discloses the die ring 12 of the present invention. As can be clearly seen in the figure, the radially inner surface 18 of the die ring 12 is provided with a plurality of grooves 14 .

[0052] refer to image 3 and Figure 4 , wherein the end portion 22, the groove 14, and a portion of the radially inner surface 18 of a single die ring 12 are shown enlarged.

[0053] Referring to FIG. 5 , a plurality of die rings 12 are assembled with forming die assembly 26 . Stencil assembly 26 includes a top end plate 30 , a bottom end plate 32 and a container 36 . The pressing means for pressing the belt sheet or unvulcanized belt 38 against the die 12 is an expandable diaphragm 40 . The diaphragm 40 can be selectively pressurized or depressurized by the fluid in the conduits 46, 48, such as air, steam or hot water, as app...

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PUM

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Abstract

An apparatus and method for manufacturing a synchronous drive belt or timing belt is disclosed. The method allows a belt with axially interlocked teeth to be manufactured. The method utilizes transfer molding, as opposed to compression molding, and involves an inflatable diaphragm (40) which pushes rubber (38) radially outwardly from a mandrel (60) into a mold having teeth on an inner surface. The method includes the provision of a barrier layer which can be advantageously built into the belt to improve the transfer molding process.

Description

Background of the invention [0001] 1. field of invention [0002] The invention relates to a synchronous transmission belt and a toothed belt, and more specifically relates to a manufacturing method and equipment for a synchronous transmission belt with teeth interlocked with the axial direction of the profile. [0003] 2. Related technical description [0004] US Patent No. 5,209,705 to Gregg discloses a timing drive belt with skewed teeth. [0005] US Patent No. 3,078,206 to Skura discloses a method of forming belt teeth and reinforced positive drive belts. [0006] US Patent No. 2,600,775 discloses a method of making and vulcanizing a power transmission belt. [0007] Finally, Japanese Patent No. 59-133,034 also relates to a method of manufacturing synchronous drive belts. [0008] The synchronous transmission belt is generally made of elastic elastic material and reinforced by longitudinal tension members. The longitudinal tension members are located on the pitch lin...

Claims

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Application Information

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IPC IPC(8): B29C70/44B29D29/08F16G1/08F16G1/26F16G1/28
CPCB29D29/08B29C70/446
Inventor B·W·道格拉斯
Owner THE GOODYEAR TIRE & RUBBER CO