ROLLER HEMMING DEVICE

• Main Authors: KOBAYASHI TAKUO, TARUI HIRONORI, TSUTSUMI MASAAKI, KOJIMA MASATOSHI, ISHIBASHI KAZUMASA, KAWASAKI NOBUYA, BABA KEITA
• Format: Patent
• Language: English; Japanese
• Published: 17.10.2023
• Subjects: MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PUNCHING METAL; TRANSPORTING; WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL

To provide a roller hemming device that can suppress positional shift in a work-piece of a lower plate material that is caused in the course of folding processing.SOLUTION: A roller hemming device 1 according to the disclosure comprises: a metal mold 2 that holds a first work-piece 7 which is a plate material; and a roller 3 that folds and overlaps an edge part 9 of the first work-piece 7 on an edge part 10 of a second work-piece 8 which is a plate material placed on the first work-piece 7 held by the metal mold 2. The metal mold 2 has an adsorbing mechanism 12 that opens to a work-piece contact surface 13 at a position where a hem flange 11 of a peripheral edge of the first work-piece 7 contacts to adsorb the first work-piece 7. This can suppress positional shift of the first work-piece 7 in the course of hemming processing. In one embodiment, the adsorbing mechanism 12 removes a foreign matter intruding into a suction hole 14 of the adsorbing mechanism 12 and a foreign matter that may get stuck between the metal mold 2 and the first work-piece 7, in advance, by performing air purge prior to adsorbing the first work-piece 7.SELECTED DRAWING: Figure 1 【課題】折り曲げ加工の過程で生じる下側の板材のワークにおける位置ずれが抑制されるローラーヘミング装置を提供すること。【解決手段】本開示のローラーヘミング装置１は、板材である第１のワーク７を保持する金型２と、金型２に保持された第１のワーク７上に載置される板材である第２のワーク８の縁部１０に第１のワーク７の縁部９を折り曲げて重ねるローラー３とを有し、金型２は、第１のワーク７周縁のヘムフランジ１１が当たる位置のワーク当接面１３に開口し第１のワーク７を吸着する吸着機構１２を有する。これにより、ヘミング加工の過程における第１のワーク７の位置ずれを抑制する。その一態様では、吸着機構１２は、第１のワーク７を吸着するに先立ってエアパージし、吸着機構１２の吸引孔１４に入った異物や、金型２と第１のワーク７との間に挟まるおそれがある異物を事前に除去する。【選択図】図１