Half-round gutter making apparatus

B - Operations – Transporting – 21 – D

Patent

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Details

B21D 5/08 (2006.01)

Patent

CA 2184499

Roll forming apparatus for making half-round gutters includes a series of initial forming stations (1-5) that roll form a partially formed curved bottom wall (44), and opposed front (47) and rear (45) walls with a conventional ogee curve and head (48) in the front wall and a hook (46) in the back wall. A side roller assembly (A) receives the gutter body and while completing the head grips the head and moves the front wall and associated top edge toward the opposite rear wall and associated top edge. A hook forming assembly (B) opposite the side forming assembly turns the top edge of the back wall toward the front wall. Two overbending stations (8, 9) grip the head and hook and overbend the bottom wall to a smaller radius and the opposed walls past a parallel position so that the resiliency of the material causes the walls to spring back to a desired finally formed half-round gutter (22).

L'appareil de fabrication de gouttières demi-rondes comprend une série de postes de formation initiale (1-5) qui forment par cylindrage une paroi de fond partiellement formée et incurvée (44), et des parois opposées antérieures (47) et postérieures (45) avec courbures en doucine et un nez (48) dans la paroi antérieure et un crochet (46) dans la paroi postérieure. Un ensemble à rouleau latéral (A) reçoit le corps de la gouttière et, tout en terminant le nez, saisit ce dernier et déplace la paroi antérieure et le bord supérieur associé vers la paroi postérieure opposée et son bord supérieur. Un ensemble de formation (B) de crochets, opposés à l'ensemble de formation latérale, retourne le bord supérieur de la paroi postérieure vers la paroi antérieure. Deux postes de pliage (8, 9) saisissent le nez et le crochet et replient la paroi de fond en lui donnant un plus petit rayon, ainsi que les parois opposées au-delà d'une position parallèle, et l'élasticité du matériau fait que les parois repartent vers l'arrière pour produire la gouttière demi-ronde finie (22).

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