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perforating roller

A piercing roller and through-hole technology, which is applied in the field of piercing rollers, can solve the problems of uneven hole formation and unstable rubber material quality, and achieve the effect of preventing uneven temperature and uniform hole processing

Active Publication Date: 2020-09-29
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of drilling using such a roller with uneven temperature, the holes cannot be formed uniformly, so the quality of the rubber material may become unstable.

Method used

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Experimental program
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Embodiment Construction

[0028] 1. The process of achieving the present invention

[0029] Before describing the embodiment of the present invention, the process for achieving the present invention will be described.

[0030] The inventors of the present invention, at first, considered in order to prevent uneven temperature from occurring on the surface of the roller: a rod-shaped rod-shaped rod containing a heating wire and an insulating material (such as magnesium oxide) for preventing leakage is accommodated in a metal tube (sheath). The sheath heater is inserted into the inside of the cylindrical roller body, and the sheath heater is supported with a gap provided between the inner peripheral surface of the roller body and the sheath heater.

[0031] In this case, using the air in the gap between the inner peripheral surface of the roller main body and the sheath heater as a transfer medium, the heat of the sheath heater is transferred to the roller main body, and since the heat generated from the ...

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Abstract

The invention provides a puncture roller. Uneven temperature generated on the surface of the roller is avoided and uniform open pore processing can be performed. Multiple needles are arranged on the surface of a cylindrical roller main body of the puncture roller. The puncture roller comprises an armoured heater which is inserted into a roller main body, a bearing piece and an insulative insulator. In a manner of forming gaps between the armoured heater and the inner circumferential face of the roller main body, one or more penetrating holes allowing the armoured heater to be inserted through is arranged and by inserting the armoured heater into the penetrating holes, the armoured heater is supported. The insulative insulator is arranged between the armoured heater and the bearing piece. The puncture roller is configured to take the air in the gaps between the armoured heater and the inner circumferential face of the roller main body as transmission medium and heat from the armoured heater is transmitted to the surface of the roller main body.

Description

technical field [0001] The present invention relates to a perforating roll in which holes for ventilation are provided in rubber material for tires. Background technique [0002] In the manufacturing process of pneumatic tires, a green tire (green tire) is formed by laminating a plurality of sheet-shaped rubber materials for tires, but if air remains between the laminated rubber materials for tires, it becomes a vulcanized The reason for the deterioration of the quality of tire products. [0003] Therefore, conventionally, a perforating process (punching process) in which holes for ventilation are provided in the tire rubber material before green tire building is performed. For example, in the PLY cutter equipment in the biasing process of cutting the cord material at a predetermined angle to produce PLY, a piercing roller having a plurality of cones (needles) is installed, and by pressing the piercing roller against the cord material before cutting, A plurality of holes f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D30/06
CPCB29D30/0681
Inventor 楠英大
Owner SUMITOMO RUBBER IND LTD