Apparatus for manufacturing window/door frames or bent metal products

Abstract

Provided is an apparatus for manufacturing window/door frames or bent metal products, in which a forming roll set that forms window/door frames or bent metal products includes upper and lower surface support rollers, left and right side support rollers and forming rollers, and that makes the upper and lower surface support rollers and the left and right side support rollers transfer a uniform force to a plate-shaped or sheet member, to thus prevent a reaction force to be caused by the forming rollers that form the plate-shaped member and to thereby fundamentally block a wave phenomenon from occurring in the plate-shaped or sheet member that passes through the forming roll set. The forming roll set includes: upper and lower support rollers; cylindrical folding rollers; and cylindrical left and right side surface support rollers. Accordingly, a wave phenomenon is fundamentally blocked from occurring during forming a plate-shaped or sheet member.

1 . An apparatus for manufacturing window/door frames or bent metal products, the apparatus comprising:
 a puncher that partially punches a V-cut plate-shaped or sheet member to make a chamfer on the V-cut plate-shaped or sheet member;   a leveler that presses upper and lower portions of the plate-shaped or sheet member with a roller to heighten flatness of the plate-shaped or sheet member;   a number of groups of pinch roll sets that are configured into active type upper and lower roller shapes that receive power transmitted from outside to thus compulsively transfer the plate-shaped or sheet member, and that are arranged in a straight line at regular intervals to thus enable the plate-shaped or sheet member to be continuously transferred in various forming operation sections; and   a number of groups of forming roll sets that are arranged in the forming operation section that is placed in the middle of the pinch roll sets at regular intervals and applies a constant pressure on the plate-shaped or sheet member that is transferred through the pinch roll sets, to thereby make the plate-shaped or sheet member selectively bent,   wherein each of the forming roll sets comprises:   upper and lower support rollers that are installed on the upper or lower surface of the plate-shaped or sheet member or the upper and lower surfaces thereof, and whose cylindrical outer circumferential surfaces closely contact the plate-shaped or sheet member, to thus support the upper or lower surface of the plate-shaped or sheet member or the upper and lower surfaces thereof that move through the pinch roll sets;   folding rollers that are installed on the inner or outer surface of the plate-shaped or sheet member, and whose cylindrical outer circumferential surfaces closely contact the inner or outer surfaces of the plate-shaped or sheet member, to thus apply a uniform pressure to the plate-shaped or sheet member to thereby form a three-dimensional plate-shaped or sheet member whose side surface is bent; and   left and right side surface support rollers that are installed on the side surface of the plate-shaped or sheet member, and whose cylindrical outer circumferential surfaces closely contact the vertical surface of the plate-shaped or sheet member that has been bent into the three-dimensional plate-shaped or sheet member by the folding rollers, to thus support the plate-shaped or sheet member to thereby maintain the plate-shaped or sheet member into a vertically bent shape.   
     
     
         2 . The apparatus for manufacturing window/door frames or bent metal products according to  claim 1 , wherein each of the forming roll sets further comprises upper and lower auxiliary support rollers that are installed at both sides of the upper and lower support rollers and that auxiliarily support the upper or lower surface or both of the upper and lower surfaces of the plate-shaped or sheet member. 
     
     
         3 . The apparatus for manufacturing window/door frames or bent metal products according to  claim 1 , wherein the upper and lower support rollers and the left and right side support rollers are configured to have a cylindrical structure in which the edges of upper and lower support rollers and the left and right side support rollers contact the upper and lower surfaces of the plate-shaped or sheet member or the left and right side surfaces thereof on a surface to surface basis. 
     
     
         4 . The apparatus for manufacturing window/door frames or bent metal products according to  claim 1 , wherein the upper and lower support rollers and the left and right side support rollers are configured to have a disc-shaped structure in which the edges of upper and lower support rollers and the left and right side support rollers contact the bent portion of the plate-shaped or sheet member on a line to line basis.