US 4,909,878 AGranted

Tire reinforcing member winding apparatus

AssigneeBridgestone Corporation

InventorTadashi Watanabe

Life of this patent

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Abstract

A tire reinforcing member winding apparatus having a rotary building drum; winding guides provided upstream to the drum so as to be moved along the axis of the drum while guiding belt-like tire reinforcing members supplied to the drum, to spirally wind the tire reinforcing members on the drum; tensile force application means for applying tensile forces to the tire reinforcing members; detection means for detecting the positions of the tire reinforcing members in the axial direction of the drum; and a control means by which the tensile forces applied to the tire reinforcing members by the tensile force application means are changed depending on the results of the detection by the detection means, so that the tensile forces of the tire reinforcing members wound on the drum are made higher far from the axially central portion of the drum than near the axially central portion.

Claims14

Dependent claims

A tire reinforcing member winding apparatus comprising:

a rotary building drum rotable about an axial axis;
winding guide means provided upstream to said drum so as to be moved along the axial axis of said drum while guiding tire reinforcing members being supplied to said drum to spirally wind said tire reinforcing members on said drum;
tension force application means for applying tensile forces to said tire reinforcing members;
detection means for detecting the positions of said tire reinforcing members in the axial direction of said drum;
and
control means by which said tensile forces applied to said tire reinforcing members by said tensile force application means are changed in response to a position of said two reinforcing members detailed by said detections means, so that tensile forces of said tire reinforcing members wound on said drum are made higher at positions laterally from an axially central portion,
wherein said tensile force application means comprises a brake roller and an electromagnetic brake controlling said brake roller.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/137,915Filed 28 Dec 1987
Priority: JP 62-9838821 Apr 1987
Granted: 20 Mar 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

B29D 30/3028
Applying the layers; Guiding or stretching the layers during application: by feeding a continuous band and winding it helically, i.e. the band is…
B29D 30/38
Pneumatic tyres or parts thereof: textile inserts, e.g. cord or canvas layers, for tyres ; Treatment of inserts prior to building the tyre
B29D 30/60
Applying bands of rubber treads, i.e. applying camel backs: by winding narrow strips
B65H 55/04
Wound packages of filamentary material: characterised by method of winding