Machine for the manufacture of wire binders |
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| 申请号 | US3623514D | 申请日 | 1969-12-30 | 公开(公告)号 | US3623514A | 公开(公告)日 | 1971-11-30 |
| 申请人 | SICKINGER CO HANS; | 发明人 | PFAFFLE ERNST; | ||||
| 摘要 | A machine for making zigzag wire binders for notebooks and the like. A rotating disk with projections bends the wire and causes the ends to ride up an internal thread. A coacting wheel with intermittent slots further bends the wire halfway between the first bends to form the zigzag. The latter passes under a top die and between side dies to form a partially curved zigzag binder for entry in the holes of the notebook sheets. | ||||||
| 权利要求 | 1. In a machine for forming a zigzag wire binder, a block having a threaded aperture, a disk rotating in said aperture and having a pair of spaced radial projections on one side thereof the outer ends of which are adjacent said threaded aperture, whereby a wire secured to one of saiD projections will be folded into lengths and threaded along said aperture, exiting at one end thereof, and an intermittently rotating wheel having spaced slotted teeth above the center of said rotating disk and engaging the central portion of each length as one end of said length exits from said threaded aperture, whereby the length will be doubled to form a zigzag wire. 2. The combination according to claim 1, the outer ends of said projections forming relatively wide bands in said zigzag wire, said toothed wheel forming relatively narrow bands in said wire. 3. The combination according to claim 2, further provided with a pair of guides receiving said zigzag wire, and forward and rear pairs of reciprocating fingers mounted adjacent said guides and pushing said zigzag wire with a predetermined spacing. 4. The combination according to claim 3, further provided with means for simultaneously lifting and retracting said reciprocating fingers and then dropping said fingers into engagement with said wire as they are advanced. 5. The combination according to claim 4, further provided with a mandrel having a curved cross section with a recessed center, said mandrel being disposed in alignment with said guides, a top die having a shape complementary to said mandrel, a pair of side dies, and means for reciprocating said dies in synchronism so that said upper die bends the successive wire loops partially around said mandrel and said side dies then engage the loops to conform to the side portions of said mandrel. 6. The combination according to claim 5, further provided with a cutting blade at the exit end of said mandrel, normally inactive reciprocating means for actuating said cutting blade, and means responsive to the emergence of a predetermined length of curved zigzag wire to activate said cutter blade actuating means to cut off said predetermined length. 7. The combination according to claim 6, said cutter blade actuating means comprising a constantly reciprocating arm having a portion thereon which normally is clear of said blade but which engages the blade when the position of said arm is shifted, a cam for shifting the position of said arm, rotating driving means for said advancing fingers, and preselectable ratio gears connecting said rotary driving means with said cam. 8. The combination according to claim 7, further provided with an advancing gear mounted above the exit end of said mandrel and meshing with the loops of said binder to discharge the binder. 9. In a machine for forming a zigzag wire binder of the type having band portions of predetermined lengths at opposite sides thereof connected by transverse portions, means for bending a straight wire into a series of lengths each of which is twice the length of one of said transverse portions and said lengths are connected by one of said band portions, and means for bending each of said lengths in half so that the two halves are connected by said other band portion. 10. The combination according to claim 9, said first-mentioned means comprising a block having a threaded aperture, and a disk rotating in said aperture and having a pair of spaced radial projections on one side thereof the outer ends of which are adjacent to said aperture, whereby a wire secured to one of said projections will be folded into lengths and threaded along said aperture, exiting at one end thereof. 11. The combination according to claim 9, further provided with a pair of guides receiving said binder therebetween, a mandrel disposed in alignment with said guides, top and side dies adjacent said mandrel, and means for reciprocating said dies in synchronism so that said top die bends the successive wire loops to conform to the side portions of said mandrel. 12. The combination according to claim 11, further provided with cutting means at the exit end of said mandrel, and normally inactive means for actuating said cutting means, said normally inactive means being responsive to the emergence of a predetermined length of curved zigzag wire to actuate said cutting means to cut off said predetermined length. |
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