Title:
2以上の螺旋状歯トラックを有する歯付きベルトの製造方法および製造装置
Document Type and Number:
Japanese Patent JP4156673
Kind Code:
B2
Abstract:
A novel method produces a synchronous drive belt with helical teeth. An internal drum mould is assembled, comprising concentric moulding rings, of adjacent right- and left-handed types (30, 32) forming a set (28). These contain teeth-forming grooves (34A, 34B), separated by a predetermined pitch. A multi-ply belt is built up around the drum mould and cured. The belt is then segmented into belt widths, which are removed. Preferably the belt widths are edge-trimmed to size. The grooves in right-handed rings are obliquely angled, in the opposite sense to those of the left-handed rings. Rings are assembled alternately with axial offset, and held. The offset is 40%-60% of the pitch. Internal surfaces of the rings each have longitudinal channels forming a keyway when left and right-handed rings are appropriately located. A dowel is inserted through the keyway, holding the rings. The internal drum mould has a second set of moulding rings, like the first, and a first spacer ring. Assembly comprises placing the spacer between first and second sets of moulding rings. In building the belt, a longitudinal tensile member is positioned over the mould, and an elastomer is layered over this. A first fabric ply is laid against the mould, before positioning the longitudinal tensile member. A transverse reinforcement is layered over the elastomer.
Inventors:
Greg, Michelle, John William
Application Number:
JP51069298A
Publication Date:
September 24, 2008
Filing Date:
August 22, 1996
Export Citation:
Assignee:
The Goodyear Tire and Rubber Company
International Classes:
B29C33/02; B29C33/30; B29D29/08; B29C35/02; F16G1/28; B29C33/42; B29L29/00
Domestic Patent References:
| JP57150559A | ||||
| JP5096589U | ||||
| JP59133034A |
Attorney, Agent or Firm:
Akio Miyazaki
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito
Nobuyuki Kaneda
Ishibashi Masayuki
Katsuhiro Ito