Apparatus for punching sheet
AssigneesHitachi Metals, Ltd., HMY, Ltd.
InventorHiroshi Takatsuka
Life of this patent
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Abstract
The apparatus for punching a sheet S includes a shaft 2 extending transversely relative to the moving direction of the sheet S; a pair of cams 3, 3 mounted to the shaft 2 in both longitudinal end portions for rotating together with the shaft 2; a tie bar 4 extending along the shaft 2 and having a pair of cam followers 41, 41 at positions corresponding to those of the cams 3, 3; a plurality of punches 5, 5 connected to the tie bar 4 in longitudinal arrangement for being movable to and from punching positions; a frame 7 extending along the tie bar 4, to which a plurality of punch guides 6, 6 are fixed in alignment with the punches 5, 5; and a die frame 8 having a plurality of die holes 81, 81 in alignment with the punches 5, 5 for cooperating with the punches 5, 5 to make holes in the sheet S.
Claims8
An apparatus for punching a sheet comprising:
- (a) a shaft extending transversely relative to the moving direction of said sheet;
- (b) a plurality of cams mounted to said shaft for rotating together with said shaft;
- (c) a tie bar extending along said shaft and having a plurality of cam followers at positions corresponding to those of said cams;
- (d) a plurality of punches connected to said tie bar in longitudinal arrangement for being movable to and from punching positions;
- and (e) a die frame having a plurality of die holes in alignment with said punches for cooperating with said punches to make holes in said sheet,
- wherein said cams are a pair of eccentric cams mounted to said shaft at longitudinal end portions of said tie bar.
An apparatus for punching a sheet comprising:
- (a) a shaft extending transversely relative to the moving direction of said sheet;
- (b) a pair of cams mounted to said shaft in both longitudinal end portions for rotating together with said shaft;
- (c) a tie bar extending along said shaft and having a pair of cam followers at positions corresponding to those of said cams;
- (d) a plurality of punches connected to said tie bar in longitudinal arrangement for being movable to and from punching positions;
- (e) a frame extending along said tie bar, to which a plurality of punch guides are fixed in alignment with said punches;
- and (i) a die frame having a plurality of die holes in alignment with said punches for cooperating with said punches to make holes in said sheet.
Dependencies are inferred from the claim text.