Methods, apparatus, and articles of manufacture for use in...

H - Electricity – 01 – B

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Details

H01B 17/56 (2006.01) B26D 1/147 (2006.01) H02K 1/12 (2006.01) H02K 15/10 (2006.01)

Patent

CA 2227473

A slitting and scoring machine includes an upper tooling roller and a lower tooling roller that cooperate to define a tooling nip. Each tooling roller includes an alternating series of coaxially arranged annular knives, annular dies, and annular mandrels. A web of insulation is drawn through the tooling nip to simultaneously (i) cut the web into strips, (ii) score the strips in a manner that promotes the forming of the strips, and (iii) partially form the strips into modified U-shapes. Each strip includes a longitudinally extending middle segment and a pair of longitudinally extending side segments that extend away from the middle segment in a divergent manner to define a longitudinally extending channel. Longitudinally extending grooves are formed by the scoring at the junctures of the middle segment and the side segments. The scoring / grooves promote the divergent shape of the strip. In an end profile view of the strip, the middle segment and each of the side segments are generally straight, and an obtuse angle is defined between each side segment and the middle segment. Each strip is formed into a roll, so that a first length of the strip and a second length of the strip each extend around a common point. At least a portion of the second length is disposed within the channel of the first length.

Coupeuse refouleuse comprenant un cylindre d'usinage supérieur et un cylindre d'usinage inférieur qui fonctionnent de pair pour définir une ligne de contact d'usinage. Chaque cylindre comprend une série de molettes de coupe coaxiales alternées, ainsi que des matrices et des mandrins annulaires. Un isolant en bande est entraîné dans la ligne de contact d'usinage pour être simultanément i) coupé en bandelettes, ii) refoulé de manière à favoriser le façonnage des bandelettes, et iii) partiellement façonné en forme de U modifié. Chaque bandelette comprend une section centrale prolongée longitudinalement et deux sections latérales prolongées longitudinalement qui divergent par rapport à cette section centrale, de manière à former une rainure longitudinale. Des rayures sont formées par le refoulage des points de jonction de la section centrale et des sections latérales. Le refoulage et les rayures permettent d'obtenir une bandelette de forme divergente. En coupe transversale, la section centrale et les sections latérales de la bandelette sont généralement droites et forment un angle obtus. Chaque bandelette est enroulée afin qu'une première longueur de bandelette et une deuxième longueur de bandelette s'enroulent autour d'un point commun. Au moins une partie de la deuxième longueur est disposée dans la rainure formée par la première longueur.

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