Document Type and Number:
Japanese Patent JPS4945541
Kind Code:
B1
Abstract:
1,146,862. Coining. L. SCHULER G.m.b.H. 28 July, 1966 [30 July, 1965], No. 33953/66. Heading B3Q. A horizontal coin-press comprises displaceable punches 42, 38, Fig. 5, a die-ring 35, means 61, 63, Fig. 4, for holding blanks 58 in alignment with the die-ring, means for feeding the blanks in a supply plane 73 into alignment with the die-ring, and means for ejecting finished coins in an ejection plane (66, Fig. 6, not shown) spaced from, but parallel to, the supply plane, both planes being perpendicular to the punchaxes. The minimum distance between the planes 66, 73 corresponds to the thickness of the thickest blank to be used. A drive shaft 1 for the press is driven, through a belt, by a motor and carries an eccentric 5 and a sprocket-wheel 13. A connecting rod 6 on the eccentric 5, through a toggle linkage 7, 8 reciprocates the front punch 42, the rear punch 38 being moved, against a return spring (32, Fig. 3, not shown), by a rod 31 operated by a lever 22 which is rocked by a cam 18 on a shaft driven by a chain 14 from the sprocket-wheel 13. Another cam (17, Fig. 1, not shown) on the shaft 16, through a lever 21, operates a spring-returned rod 24 the end 25 of which bears against a pivoted carrier 29, Fig. 4, for the moving jaw 63 of the workholder so as to raise the jaw against the influence of a return spring 28. Also on the shaft 16 is a further cam 47 the follower 48 of which, through a shaft 50 and a lever 51, operates a single slide 54 for feeding blanks and also ejecting finished coins. A recess 57, 60 in the slide receives a blank 58 from a shoot 62, Fig. 4, and delivers it to the work-holder 59, 63 which holds the blank in front of the die-ring When the front punch 42 engages the blank to carry it into the die-ring for the coining operation, the jaw 63 is raised by the rod 25. After coining. the front punch is withdrawn, followed by the rear punch 38 moving in the same direction (Fig. 6) to remove the workpiece from the die. The delivery slide is then advanced so that its leading end 67 strips the coin off the rear punch or off the withdrawing front punch 42 and ejects in the ejection plane (66, Fig. 6). The rear punch then withdraws until its front face is co-planar with the front face of the die-ring 35, to facilitate location of the next blank, before completing its withdrawal. Alternatively, the withdrawal strokes may be uninterrupted. In a modification, Fig. 7 (not shown), the coins are ejected by a lip (72) on the work-holder jaw (63). In this case, the camshaft 16 may be arranged to effect downward, ejection movements of the jaw.
Application Number:
JP4740766A
Publication Date:
December 04, 1974
Filing Date:
July 21, 1966
Export Citation:
International Classes:
B21D31/00; B21D43/02; B21D43/04; B21D43/16; B30B15/30; B44B5/00; B44B5/02; (IPC1-7): B30B15/30; B21D22/06