US3812582A - Method and apparatus for the production of electrical contacts on contact carriers - Google Patents

Method and apparatus for the production of electrical contacts on contact carriers Download PDF

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Publication number
US3812582A
US3812582A US00305781A US30578172A US3812582A US 3812582 A US3812582 A US 3812582A US 00305781 A US00305781 A US 00305781A US 30578172 A US30578172 A US 30578172A US 3812582 A US3812582 A US 3812582A
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United States
Prior art keywords
contact
contact material
strip
contact piece
cut
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Expired - Lifetime
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US00305781A
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English (en)
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H Zollinger
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H11/04—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts
    • H01H11/041—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion
    • H01H11/043—Apparatus or processes specially adapted for the manufacture of electric switches of switch contacts by bonding of a contact marking face to a contact body portion by resistance welding
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49204—Contact or terminal manufacturing
    • Y10T29/49208—Contact or terminal manufacturing by assembling plural parts
    • Y10T29/4921—Contact or terminal manufacturing by assembling plural parts with bonding
    • Y10T29/49211—Contact or terminal manufacturing by assembling plural parts with bonding of fused material
    • Y10T29/49213—Metal
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5136—Separate tool stations for selective or successive operation on work
    • Y10T29/5137—Separate tool stations for selective or successive operation on work including assembling or disassembling station
    • Y10T29/5142—Separate tool stations for selective or successive operation on work including assembling or disassembling station and means to sever work from supply

Definitions

  • ABSTRACT [30] Foreign Application P io it D t A cutting device for cutting a contact piece from a wire or ribbon-like contact material fed thereto by 21 Dec. 4, 1971 Switzerland 17608/71 first gulde, after wh1ch an advancmg and w1thdraw1ng [521 [LS Cl 29/630 A 29/203 R 29/203 D, device advances the remaining contact material to 29/630 R 228/5 push the cut contact piece from the cutting device [51] Int.
  • This invention relates to a method and apparatus for the production of electrical contacts on contact carriers, the contacts being in the form of contact pieces which are cut from a wire or ribbon-like contact material and are conductively connected, e.g. by resistance welding, to a contact carrier consisting for example of sheet metal or wire.
  • a process has been proposed for producing electrical contacts wherein wire contact material is welded vertically to a contact carrier consisting of sheet metal, then cut off at a distance from the welding point and wherein the contact face of the contact piece removed thereby is subsequently stamped (Swiss Patent Specification No. 384,100).
  • This method cannot be applied if the contact piece, which is of a wire or ribbon-like contact material, is to be welded flat on to a contact carrier and not vertically.
  • Flat welded contact pieces are necessary for example for the production of pairs of contacts with ribbon or wire-shaped pieces of contact material intersecting one another.
  • bi-metallic contact pieces which consist of a layer of a first material to be welded to the contact carrier and a layer of a second material forming the contact face, must be welded flat to contact carriers.
  • An object of the invention is to enable contact pieces to be cut from wire or ribbon-like contact material and to be welded in a predetermined position flat on contact carriers, e.g. of sheet metal or wire.
  • a method for the production of electrical contacts on contact carriers comprising cutting a contact piece from a wire or ribbon-like contact material, advancing the remaining contact material to push the cut contact piece to a position for conductive connection to a contact carrier, and conductively connecting said contact piece to the contact carrier, the remaining contact material being withdrawn by a dis tance which is smaller by the length of the cut contact piece than the distance by which the cut contact piece is advanced to said position for conductive connection, in order to bring the contact material into position for cutting the next contact piece.
  • conductive connection is made by resistance welding.
  • apparatus for the production of electrical contacts on contact carriers comprising a cutting device for cutting a contact piece from wire or ribbon-like contact material.
  • means for conductively connecting a cut contact piece to a contact carrier and advancing and withdrawing means for advancing the remaining contact material to push a cut contact piece from the cutting device to the conductive connection means and subsequently withdrawing the remaining contact material by a distance which is smaller by the length of the cut contact piece than the distance by which the cut contact piece is advanced to the conductive connection means, there being a first guide for guiding contact material to the cutting device, and a second guide for guiding contact material from the cutting device to the conductive connection means, said first and second guides being in alignment.
  • the means for conductively connecting a cut contact piece to a contact carrier is an electrical resistance welding apparatus.
  • FIG. 1 is a partially sectioned elevation of an apparatus for the production of electrical contacts
  • FIG. 2 a section view on an enlarged scale along the line 11-11 of FIG. 1.
  • the apparatus comprises guide parts 1,2 for drawing off wire-like contact material 3 from a supply coil (not shown).
  • a pair of spring-loaded grips 4,5, is provided for advancing the wire contact material, and a pair of shearing blades 6,7 is provided for cutting contact pieces 8 from the material 3.
  • a raisable and lowerable clamp 9 is provided for the contact piece to be cut.
  • Contact piece guides 10,11 guide the contact pieces to a pair of welding electrodes 12,13 for resistance welding a contact piece 8 to a contact carrier 14.
  • the contact piece guides 10,11 define an outlet 15 which leads to the welding point on the contact carrier 14 through an acute angle.
  • An inlet 16 leading to the contact piece guides is defined by the clamp 9 and the lower shearing blade 7 which is stationary, and integral with the lower guide 11.
  • the upper shearing blade 6 is movable and disposed adjacent the clamp 9 directly in front of the inlet 16 leading to the contact piece guides 10,11.
  • the upper blade 6 has an obtuse cutting angle.
  • the upper blade 6 and the clamp 9 are arranged to be led towards one another by sliding in a guide 17 (not shown in FIG. 2) and are connected with an advance and withdrawal device schematically shown at 6, the cycle of movement of which is explained in greater detail hereafter in conjunction with the operation of the apparatus.
  • the upper guide section 10 has two bifurcations 10a running in its longitudinal direction (FIGS. 1 and 2), between which the lower extremity of the upper blade 6 and the lower extremity of the clamp 9 are ar ranged one behind the other.
  • the guide part 2 located in front of the inlet 16 leads the material 3 to the contact piece guide 10,11.
  • the part 2 can be swung about a pivot 18 which intersects the contact material guide path of the part 2 at right angles and is disposed at right angles to the direction of movement of the upper blade 6 at a distance from the latter, so that an extremity 19 of one arm of the guide section 2, can follow the movement of the cutting edge of the upper blade 6.
  • the extremity 19 exhibits a guide face for the contact material and is arranged with the upper blade 6 as a counter-abutment.
  • the guide section 2 is subject to the action of a tension spring 20 which exerts a torque on it in the direction of the arrow 21, so that the extremity 19 adjoins the bifurcations 10a in the rest position illustrated, whereby its guide face lies in a common plane with the guide face of the contact piece guides 11 and the upper blade 6 is at a small distance (e.g. 0.1 mm) from the contact material 3.
  • a tension spring 20 which exerts a torque on it in the direction of the arrow 21, so that the extremity 19 adjoins the bifurcations 10a in the rest position illustrated, whereby its guide face lies in a common plane with the guide face of the contact piece guides 11 and the upper blade 6 is at a small distance (e.g. 0.1 mm) from the contact material 3.
  • the upper grip 4 of the pair of grips 4,5 is subject to the action of a pressure-exerting spring 25, the pre-tensioning of which can be adjusted by means of a nut 26.
  • a part 27 of the guide part 1 which surrounds the pair of grips 4,5 and the spring 25 is connected with a device for the sequential production of three strokes, which are represented by the arrows 22, 23 and 24.
  • the device schematically shown at 27'- may comprise for example an off-drive member of a cam gear.
  • the stroke 23 is longer than the length of the contact piece guides 10,11 between the cutting edges of the blades 6 and 7 and the outlet 15 by a distance a which represents the desired distance of the contact piece 8' to be welded from the outlet 15.
  • the stroke 24 is shorter than the stroke 23 by the longitudinal dimen sion of an individual contact piece 8, 8', and the stroke 22 matches this contact piece dimension.
  • the guide parts 1,2 together with the contact piece guides 10,11 and the parts connected with it metallically are electrically insulated from the welding circuit (of which only the electrodes 12 and 13 are shown).
  • the pre-tensioning of the spring 25 is chosen such that in the illustrated rest position ofthe guide section 2, the wire 3 clamped between the grips 4 and is drawn along by these grips without slipping, pulled off the supply coil (not shown) by them, drawn through the guide part I, pushed through the guide part 2, across the guide face of the extremity 19 and the lower blade'7 and through the guide pieces 10, 11', when the part 27 with the grips 4 and 5 executes the stroke 23, and is accordingly pushed back and pulled when the part 27 effects the stroke 24.
  • the tension of the spring 20 is determined such that when the upper blade 6 has cut the contact piece 8 from the wire 3 and thereby lowered the extension 19 from the bifurcations a, the free end of the wire 3 is so firmly clamped between the upper blade 6 and the extension 19 that the grips 4,5 slide on the contact material 3 and cannot draw the same along when the part 27 with the grips 4,5 executes thestroke 22, Thereby the cutting edge movement of the upper blade 6 runs downwards further than is required for cutting through the thin wire 3.
  • the material 3 protrudes beyond the cutting edges of the blades 6 and 7 into the guides 10,11 by the length to be cut off for the contact piece, the clamp 9 holds this length firmly on the lower blade 7, the part 27, with the grips 4,5, is at the start of the stroke 22, and the grips 4,5 hold the contact material 3 firmly.
  • the upper blade 6 descends and cuts the contact piece 8 off, whereupon the blade 6 presses downwards across the remaining contact material onto the extremity 19, and thus lowers the extremity 19 from the bifurcations 10a and swings the guide section 2 in the direction counter to that shown by the arrow 21.
  • a method for the production of electrical contacts on contact carriers comprising cutting a contact piece from a strip of wire or ribbon-like contact material, advancing the remaining strip of contact material to push the cut contact piece to a position for conductive connection to a contact carrier, conductively connecting said contact piece to the contact carrier, and withdrawing the remaining strip of contact material by a distance which is smallerby the length of the cut contact piece than the distance by which the cut contact piece is advanced to said position for conductive connection, to bring the contact material into position for cutting the next contact piece.
  • conductive connection of thecut contact piece to the contact carrier includes the step of resistance welding.
  • Apparatus for the production of electrical contacts on contact carriers comprising a cutting device adapted to cut a contact piece from a strip of wire or ribbon-like contact material, a first guide means positioned for guiding the strip of contact material to said cutting device, means spaced from said cutting device for conductively connecting a cut contact piece to a contact carrier, a second guide means connected between said cutting device and said conductive connection means for guiding contact material from said cutting device to said conductive connection means, said first and second guide means connected in alignment, and movable advancing and withdrawing means adapted to grip and advance the remaining strip of contact material into said second guide means to push a cut contact piece from said cutting device through said second guide means to the conductive connection means and movable to subsequently withdraw the remaining strip of contact material from said second guide means by a distance which is smaller by the length of the cut contact piece than the distance by which the cut contact piece is advanced to the conductive connection means by the strip of contact material.
  • Apparatus as claimed in claim 3, wherein the means for conductively connecting a cut contact piece to a contact carrier is an electrical resistance welding apparatus.
  • the cutting device comprises a displaceable blade connected adjacent the end of said first guide means, a springloaded first counter-abutment connected to co-operate with said displaceable blade, and a stationary blade connected at one end of said second guide means, a second counter-abutment connected to co-operate with said stationary blade, and said spring-loaded first counter-abutment having a guide face leading to said second guide.
  • the movable advancing and withdrawing means includes springloadedgrip members, and wherein said first counterabutment is spring-loaded in such a manner that it presses the strip of contact material against the cutting edge of the displaceable blade with a force increasing with the extent of cutting displacement of the displaceable blade.
  • Apparatus claimed in claim 11 including stop means against which said first counter-abutment is spring-loaded in its rest position, and said first counterabutment connected to be lifted from the stop means at the end of the cutting movement of the displaceable blade by said displaceable blade for holding the end of the strip of contact material firmly between the displaceable blade and the first counter-abutment such that said spring loaded grip members slide with respect to the strip of contact material during the first backward stroke.
US00305781A 1971-12-04 1972-11-13 Method and apparatus for the production of electrical contacts on contact carriers Expired - Lifetime US3812582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1760871A CH536022A (de) 1971-12-04 1971-12-04 Verfahren zur Herstellung elektrischer Kontakte und Einrichtung zur Durchführung des Verfahrens

Publications (1)

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US3812582A true US3812582A (en) 1974-05-28

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00305781A Expired - Lifetime US3812582A (en) 1971-12-04 1972-11-13 Method and apparatus for the production of electrical contacts on contact carriers

Country Status (14)

Country Link
US (1) US3812582A (pt)
JP (1) JPS529296B2 (pt)
BE (1) BE791881A (pt)
BR (1) BR7208480D0 (pt)
CA (1) CA962735A (pt)
CH (1) CH536022A (pt)
DE (1) DE2250461C3 (pt)
ES (1) ES409248A1 (pt)
FR (1) FR2164163A5 (pt)
GB (1) GB1350719A (pt)
IT (1) IT975936B (pt)
NL (1) NL7214155A (pt)
SE (1) SE390081B (pt)
SU (1) SU719484A3 (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089106A (en) * 1973-05-25 1978-05-16 North American Specialties Corp. Method for producing electrical contacts
US4095082A (en) * 1975-06-27 1978-06-13 H. A. Schlatter Ag Apparatus for welding electrical contacts
CN112276406A (zh) * 2020-11-24 2021-01-29 常熟市天银机电股份有限公司 电机起动保护器动触点焊接机的焊接平台结构

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2454804B2 (de) * 1974-11-19 1979-03-01 Otto Bihler Maschinenfabrik Gmbh & Co Kg, 8959 Halblech Einrichtung zum Widerstandsanschweißen von KontaktmetaUrohlingen an einer Anbringungsfläche
FR2291820A1 (fr) * 1974-11-19 1976-06-18 Bihler Otto Procede pour souder des pieces de contact metalliques sur des pieces d'usinage et dispositif pour sa mise en oeuvre
CH624326A5 (pt) * 1976-09-18 1981-07-31 Heraeus Gmbh W C
DE2932753C2 (de) * 1979-08-13 1985-01-31 Siemens AG, 1000 Berlin und 8000 München Schweißeinrichtung zum Anschweißen von Kontaktstücken an ein Kontaktträgerband
DE3822150A1 (de) * 1988-06-30 1990-01-04 Finzer Saeckinger Maschinen Fa Schweissaggregat zum schweissen eines vereinzelten kontaktelementes auf ein traegerelement
US5431953A (en) * 1992-05-12 1995-07-11 Hamamatsu Corporation Automated device for applying evaporator beads to a conductive wire
DE19755166A1 (de) * 1997-12-11 1999-06-17 Bihler Otto Handels Beteiligungs Gmbh Einrichtung und Verfahren zum Anbringen eines Kontaktmetallteils an einem Trägerteil durch Schweißen
DE20214590U1 (de) * 2002-09-20 2004-02-19 Otto Bihler Handels-Beteiligungs-Gmbh Einrichtung zum Anbringen wenigstens eines Kleinteils an einem jeweiligen Trägerteil und Nachrüst-Teileinrichtung mit wenigstens einem Servomotor für eine derartige Einrichtung
DE10347075A1 (de) * 2003-10-10 2005-05-04 Bihler Otto Handels Beteiligungs Gmbh Bauteil-Transportvorrichtung
CN107611740A (zh) * 2017-08-28 2018-01-19 鹤壁海昌专用设备有限公司 一种收锁线机构
CN112496583A (zh) * 2020-11-24 2021-03-16 常熟市天银机电股份有限公司 制冷压缩机电机起动保护器的静触点自动焊接装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655471A (en) * 1920-09-03 1928-01-10 Metal Package Corp Of New York Wire feeding and cutting device
US2771009A (en) * 1952-06-03 1956-11-20 Carroll Punching machine
US3045715A (en) * 1958-11-12 1962-07-24 Western Electric Co Apparatus for mounting wires on articles
US3148817A (en) * 1962-08-20 1964-09-15 Lawrence H Lord Stock feeding mechanism for punch presses and the like
US3194098A (en) * 1962-11-08 1965-07-13 Westinghouse Electric Corp Severing apparatus having transfer means operable to engage the leading end of the workpiece before severance
US3473716A (en) * 1967-11-24 1969-10-21 Nilson Mach Co A H Adjustable feed block and check unit assemblies
US3626590A (en) * 1968-05-28 1971-12-14 Miller Charles F Methods and apparatus for accomplishing electrical wiring
US3680761A (en) * 1970-07-28 1972-08-01 Kelsey Hayes Co Fine wire butt welder

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477894A (en) * 1948-04-23 1949-08-02 Albert F Pityo Method of and apparatus for forming and welding contacts
DE1021517B (de) * 1954-01-30 1957-12-27 Deutsche Telephonwerk Kabel Maschine zum Herstellen und Befestigen von Kontaktkoerpern, insbesondere von Edelmetall-Kontaktkoerpern
DE1574437B2 (de) * 1967-09-29 1976-07-15 Siemens AG, 1000 Berlin und 8000 München Vorrichtung zum schrittweisen befoerdern eines langgestreckten band- oder drahtfoermigen materials zu einer bearbeitungsstelle
DE1652833A1 (de) * 1968-01-30 1971-04-29 Hans Prohaska Automatische Schweisseinrichtung fuer Kontakte

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1655471A (en) * 1920-09-03 1928-01-10 Metal Package Corp Of New York Wire feeding and cutting device
US2771009A (en) * 1952-06-03 1956-11-20 Carroll Punching machine
US3045715A (en) * 1958-11-12 1962-07-24 Western Electric Co Apparatus for mounting wires on articles
US3148817A (en) * 1962-08-20 1964-09-15 Lawrence H Lord Stock feeding mechanism for punch presses and the like
US3194098A (en) * 1962-11-08 1965-07-13 Westinghouse Electric Corp Severing apparatus having transfer means operable to engage the leading end of the workpiece before severance
US3473716A (en) * 1967-11-24 1969-10-21 Nilson Mach Co A H Adjustable feed block and check unit assemblies
US3626590A (en) * 1968-05-28 1971-12-14 Miller Charles F Methods and apparatus for accomplishing electrical wiring
US3680761A (en) * 1970-07-28 1972-08-01 Kelsey Hayes Co Fine wire butt welder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089106A (en) * 1973-05-25 1978-05-16 North American Specialties Corp. Method for producing electrical contacts
US4095082A (en) * 1975-06-27 1978-06-13 H. A. Schlatter Ag Apparatus for welding electrical contacts
CN112276406A (zh) * 2020-11-24 2021-01-29 常熟市天银机电股份有限公司 电机起动保护器动触点焊接机的焊接平台结构

Also Published As

Publication number Publication date
DE2250461A1 (de) 1973-06-14
ES409248A1 (es) 1976-03-16
GB1350719A (en) 1974-04-24
SE390081B (sv) 1976-11-29
DE2250461B2 (de) 1974-11-14
JPS49100564A (pt) 1974-09-24
FR2164163A5 (pt) 1973-07-27
CA962735A (en) 1975-02-11
BR7208480D0 (pt) 1973-09-27
IT975936B (it) 1974-08-10
CH536022A (de) 1973-04-15
BE791881A (fr) 1973-03-16
DE2250461C3 (de) 1981-04-30
NL7214155A (pt) 1973-06-06
SU719484A3 (ru) 1980-02-29
JPS529296B2 (pt) 1977-03-15

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