Patent US3663789A successfully refreshed from Google Patents.
US3663789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welding apparatus of wire terminals on electronic components
Assignee: TEKMA-KINOMAT Srl C/O MAGNATECH INTERNATIONAL Inc A Co OF ITALY W L L
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Filing: 1971-03-15
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Granted: 1972-05-16
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Expires: 1991-03-15
Abstract
Abstract Automatic welding apparatus of metal wire terminals on bodies of electronic components, comprising: mans for supporting said bodies in a plurality of positions on a step-by-step indexing turret; means for precision levelling or gauging the surfaces of the bodies to be welded, said levelling means operating at a fixed station with respect to the indexing turret; and means operating in a working station for feeding a preselected length of wire to a first operating position, for cutting said length of wire, for further feeding said length of wire up to contacting one of said bodies, and for welding the wire on the body by means of an electric discharge through the point of contact, the electric current being fed directly through the length of wire, on one side, and respectively through the supporting means of the bodies of the other side.
Inventors
- 👤 Giuseppe Camardella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:07
CPC Classifications
H; H01; H01R; H01R43/00; H01R43/02; B; B23; B23K; B23K11/00; B23K11/002; B23K11/0026
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
131 words
An automatic apparatus for the precision welding of metal wire terminals, particularly on bodies or tangs of electronic components, comprising means for supporting said bodies or tangs in a plurality of positions on a step-by-step indexing turret; means for precision levelling of the surfaces of the bodies or tangs to be welded, said levelling means operating at a fixed station with respect to the indexing turret; and means operating in at least one working station for feeding a predetermined length of metal wire to a first operating position, for cutting said length of wire, for further feeding said length of wire up to contacting by pressure the body or tang, and for welding the wire on the body or tang by means of an electric discharge through the point of contact.
Claim 2
Dependent Claim
131 words
An automatic apparatus for the precision welding of metal wire terminals, particularly on bodies or tangs of electronic components, comprising means for supporting said bodies or tangs in a plurality of positions on a step-by-step indexing turret; means for precision levelling of the surfaces of the bodies or tangs to be welded, said levelling means operating at a fixed station with respect to the indexing turret; and means operating in at least one working station for feeding a predetermined length of metal wire to a first operating position, for cutting said length of wire, for further feeding said length of wire up to contacting by pressure the body or tang, and for welding the wire on the body or tang by means of an electric discharge through the point of contact.
Claim 3
Dependent Claim
93 words
Apparatus as in claim 1, in which said supporting means of the tangs to be welded each comprise a rigid rest mounted on the indexing turret, a conical seat in said rest for housing conical parts of pincers apt to grip a tang, and spring means to force said pincers into said conical seat, causing the pincers to close and strongly lock said tang, and releasing means operating in a limited number of stations of the indexing turret, against the action of said spring means to loosen the pincers and release the tang.
Claim 4
Dependent Claim
73 words
Apparatus as in claim 2, in which said releasing means comprise a bell-crank lever, with fulcrum on each rest, the first arm of said lever acting on said pincers to release them from said conical seat against the action of said spring means, and the second arm of said lever being controlled by a fixed cam placed outside the indexing turret and which causes the oscillation of said lever when the turret indexes.
Claim 5
Dependent Claim
46 words
Apparatus as in claim 3, in which said fixed cam is formed by a fixed ring sector with beveled inlet and outlet ends, the second arm of the bell-crank lever resting - through a sliding roller carried by said arm - against said fixed ring sector.
Claim 6
Dependent Claim
25 words
Apparatus as in claim 4, in which said ring sector cam runs in correspondence with the unloading station and with at least one loading station.
Claim 7
Dependent Claim
16 words
Apparatus as in claim 5, in which said spring means comprise at least one cup spring.
Claim 8
Dependent Claim
77 words
Apparatus as in claim 1, in which said supporting means of the bodies to be welded each comprise an essentially cylindrical, rigid support mounted on the indexing turret, and a slider moving along said cylindrical support, said bodies being seated on said cylindrical support, so that their free rim rests against said slider, and releasing means acting at one station of the indexing turret to move said slider along the cylindrical support and remove the condenser body.
Claim 9
Dependent Claim
88 words
Apparatus as in claim 1, in which said levelling means comprise a roller having an extremely hard outer surface, said roller being mounted idle on an horizontal axis, transversal to the travel path of the bodies or tangs to be welded, said roller being so positioned that the surface of each body or tang to be welded will come into contact with the surface of the roller substantially according to a tangent horizontal to this latter surface, which thus causes the pressing or gauging at a predetermined level.
Claim 10
Dependent Claim
39 words
Apparatus as in claim 1, in which said levelling means comprise a jack controlling a pressure head apt to press down and level the part to be welded and means to exactly adjust the stroke of said pressure head.
Claim 11
Dependent Claim
20 words
Apparatus as in claim 9, in which said pressure head is integral with the free end of the jacK rod.
Claim 12
Dependent Claim
34 words
Apparatus as in claim 9, in which said pressure head is carried by a guide pin, the latter moving under the control of a toggle, on the center point of which acts the jack.
Claim 13
Dependent Claim
21 words
Apparatus as in claim 9, in which said adjusting means comprise a screw-type end-of-stroke directly controlling the stroke of the jack.
Claim 14
Dependent Claim
14 words
Apparatus as in claim 9, in which said jack is of the pneumatic type.
Claim 15
Dependent Claim
45 words
Apparatus as in claim 1, in which the current causing the electric discharge for the welding operation is directly fed through the predetermined length of wire, on one side, and respectively through the pincers supporting means of the bodies or tangs, on the other side.
Claim 16
Dependent Claim
64 words
Apparatus as in claim 14, in which the current causing said electric discharge is directly fed on one side through a first conductor connected to the pincers holding the wire to be welded, and on the other side through a second conductor connected to the pieces to be welded by means of a copper-plate integral with the indexing turret and the pincers supporting means.
Claim 17
Dependent Claim
26 words
Apparatus as in claim 15, in which said pincers supporting means, for the tangs, are electrically connected to the copper-plate by means of flexible copper leads.
Claim 18
Dependent Claim
28 words
Apparatus as in claim 16, in which said second conductor is connected to the copper-plate through contact means, in a fixed position with respect to the indexing turret.
Claim 19
Dependent Claim
14 words
Apparatus as in claim 17, in which said contact means comprise a sliding contact.
Claim 20
Dependent Claim
27 words
Apparatus as in claim 17, in which said contact means comprise a removable contact operating the electric connection only when the indexing turret is at a standstill.
Claim 21
Dependent Claim
16 words
Apparatus as in claim 19, in which said removable contact is controlled by a pneumatic jack.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |