Molding element for manufacturing a noise reducing tread

A technology for molding components and treads, applied to tire parts, tire treads/tread patterns, tires, etc., can solve problems such as difficult to obtain treads with flexible fences, reduce processing duration, increase productivity, The effect of increasing degrees of freedom

Active Publication Date: 2019-01-11
OCIETE DE TECH MICHELIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Furthermore, due to the difficulty of forming cavities of precise dimensions by milling and / or casting processes, it is difficult to obtain treads with flexible fences of precise thickness, thereby making it difficult to achieve the bending required for liquid drainage by hydrodynamic pressure

Method used

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  • Molding element for manufacturing a noise reducing tread
  • Molding element for manufacturing a noise reducing tread
  • Molding element for manufacturing a noise reducing tread

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

[0054] The following will refer to Figure 1 to Figure 7 A molding element 1 of a mold for manufacturing a tread 101 of a tire, a mold including the molding element 1 , and a tread 101 molded and vulcanized using the mold according to an embodiment of the present invention will be described.

[0055] figure 1 is a schematic plan view of a tread of a tire molded with a mold including a molding element according to an embodiment of the present invention. figure 2 is displayed figure 1 An enlarged schematic plan view of the portion indicated as II in . image 3 is along figure 1 A schematic cross-sectional view taken along line III-III in . Figure 4 is a schematic perspective view of a part of a molding element without an insert according to an embodiment of the invention. Figure 5 is a schematic perspective view of a part of a molding element wi...

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PUM

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Abstract

Present invention provide a molding element for a mold used for manufacturing a tread of a tire having a plurality of contacting element delimited by a plurality of groove, the molding element havinga molding surface for forming a contact face of the contacting elements intended to come into contact with ground during rolling and a groove forming rib portion for forming the groove comprising twoopposed rib side faces for forming two opposed groove side faces and a rib top face connecting two rib side faces for forming a groove bottom, the groove forming rib portion providing at least one space opening to at least one of the rib side faces and / or to the rib top face and an insert being received in the space for forming a portion of the groove and a closing device in the groove, the molding element being characterized, in that the insert is composed of a plurality of thin plates stacked in a direction along which the groove forming rib portion extends, comprises at least one forming plate assembly, the forming plate assembly comprises at least two notched plates of thickness t1, each of the notched plates includes at least one notch for forming a flexible fence of the closing device, and in that the notch in one notched plate has no area overlapping to the notch in the other notched plated adjacent thereto in sectional view in a direction along which the groove forming rib portion extends.

Description

technical field [0001] The present invention relates to a molding element, in particular to a molding element of a mold for the manufacture of a tire tread having closing means in the grooves. Background technique [0002] Groove resonance results from resonance in the air column defined between the grooves in the tread and the road surface in contact with the tire. The frequency of this groove resonance depends on the length of the air column formed between the groove and the road surface in the contact zone. [0003] This groove resonance results in internal and external noise on vehicles fitted with such tires, the frequency of which is generally around 1 kHz to which the human ear is sensitive. [0004] In order to reduce such groove resonances, it is known to arrange in each groove a plurality of closing means in the form of thin flexible fences made of rubber-based material. Effectively, each flexible fence covers all or at least a substantial part of the cross-secti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/02B60C11/13
CPCB29D30/0606B29D2030/0612B60C2011/0341B60C2011/1361B60C11/1307B60C11/1353B60C2011/1338
Inventor A·格尼奥K·宾塞隆G·罗蒂
Owner OCIETE DE TECH MICHELIN
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