| 摘要 |
A method for manufacturing a wheel including a step (a) during which a liquid to be polymerised is cast into a first mould so as to solidify same into a tubular preform, with main axis, the first mould including modelling cores in order to form recesses, of the rib type, in the radial thickness of the tubular preform; followed by a cutting step (b), during which the tubular preform is cut perpendicular to the main axis thereof, and secant to the recesses, so as to obtain a tubular preform section forming a rim; followed by an overmoulding step (d), during which said rim is placed in a second mould, concentrically with a central supporting member, such as a bushing or a shaft, and a polymer filling material is injected so as to create an intermediate disc that provides the attachment of the rim to the central supporting member. |
| 主权项 |
1. A method for manufacturing a wheel comprising a tubular preform manufacturing step (a), which comprises casting a liquid to be polymerized in a first mold and polymerizing said liquid in said first mold so as to be solidified into a tubular preform, with a main axis, the first mold comprising a central core, which is centered on the main axis and which allows forming the central bore of the tubular preform, as well as modeling cores arranged substantially parallel to the main axis so as to form, in the radial thickness of the tubular preform, recesses which extend axially according to the length of said tubular preform, said method comprising afterwards a cutting step (b), which comprising cutting the tubular preform substantially perpendicularly to the main axis thereof, and secant to the recesses, so as to obtain a tubular preform section forming a rim, and then an overmolding step (d) which comprises placing said rim in a second mold, concentrically with a central support member, such as a sleeve or a shaft, which materializes the axis of rotation of the wheel be formed, and a polymer filling material is injected in the interstitial space which is comprised radially between said central support member and the rim so that said filling material come into contact with said central support member and penetrates the recesses, and therefore creates, when solidified, an intermediate disc which fastens the rim to the central support member. |
