US3115695A - Ladder strip crimper - Google Patents

Ladder strip crimper Download PDF

Info

Publication number
US3115695A
US3115695A US834488A US83448859A US3115695A US 3115695 A US3115695 A US 3115695A US 834488 A US834488 A US 834488A US 83448859 A US83448859 A US 83448859A US 3115695 A US3115695 A US 3115695A
Authority
US
United States
Prior art keywords
dies
platform
wire
jaws
crimping
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US834488A
Other languages
English (en)
Inventor
Glendon H Schwalm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TE Connectivity Corp
Original Assignee
AMP Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL254908D priority Critical patent/NL254908A/xx
Priority to NL126354D priority patent/NL126354C/xx
Application filed by AMP Inc filed Critical AMP Inc
Priority to US834488A priority patent/US3115695A/en
Priority to GB27702/60A priority patent/GB887451A/en
Priority to DE19601515348 priority patent/DE1515348B1/de
Priority to FR836041A priority patent/FR1274498A/fr
Priority to CH932360A priority patent/CH387119A/de
Priority to JP3511060A priority patent/JPS3715576B1/ja
Application granted granted Critical
Publication of US3115695A publication Critical patent/US3115695A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/12—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof
    • H02G1/1202—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for removing insulation or armouring from cables, e.g. from the end thereof by cutting and withdrawing insulation
    • H02G1/1248—Machines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/04—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for forming connections by deformation, e.g. crimping tool
    • H01R43/048—Crimping apparatus or processes
    • H01R43/05—Crimping apparatus or processes with wire-insulation stripping
    • 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
    • Y10T29/5193—Electrical connector or terminal

Definitions

  • An object of the invention is to provide an improved wire stripping device which is particularly adapted for use with a terminal crimping press.
  • a further object is to provide a wire stripping device adapated for use with a terminal crimping press and having a pair of wire gripping jaws which are adapted to open and thereby to release the wire prior to the end of the operating cycle of the press.
  • a preferred embodiment comprising a pair of closable insulation-cutting knives, and a pair of pivoted Wire gripping jaws which are normally biased to their opened position. These jaws are closed by means of a cam or wedge and are mounted on a reciprocable slide member by means of which they may be retracted from the insulation-cutting knives to remove a severed section of insulation from the wire end. Movement of the slide is affected by means of pneumatic piston cylinder which engages the slide member and retracts it from the knives.
  • the entire stripping mechanism excepting the insulationcutting knives, is mounted on a pivoted platform adjacent a crimping press in a man or such that after the stripping operation has been completed, the platform is lowered so that the stripped wire is positioned within an uncrimped terminal.
  • the cam or wedge which closes the jaws is disengaged from these jaws after movement of the pivoted platform so that the grip of the jaws on the wire is released prior to the crimping operation.
  • FIGURE 1 is a perspective view showing a preferred embodiment of a wire stripper in accordance with the invention and showing portions of a terminal crimping press on which the wire stripper is mounted;
  • FIGURE 2 is a top plan view of the embodiment of FIGURE 1 with the wire gripping jaws open;
  • FIGURE 3 is a view similar to FIGURE 2 but showing the positions of the parts when the jaws are closed;
  • FIGURE 4 is a side view of the preferred embodiment
  • FIGURES 5 and 6 are views similar to FIGURE 4 but showing the positions of the parts at different stages in the wire stripping cycle
  • FIGURE 7 is a view taken along the lines 77 of FIGURE 2;
  • FIGURE 8 is a view taken along the lines 3% of FIGURE 6;
  • FIGURES 9 and 10 are a side and plan view of an alternative embodiment.
  • FIGURE 11 is a perspective view of a terminal crimping press equipped with an applicator in accordance with the embodiment of FIGURES 9 and 10.
  • FIGURES 11A, 11B, and 110 are fragmentary perspective views illustrating the manner in which the insulation is stripped from the end of a wire and the stripped end is positioned in an uncrimped terminal.
  • FIGURE 1 The embodiment of FIGURE 1 is shown as being mounted on a terminal crimping press of the general type described of the copending application of Robert L. Albright, Serial No. 792,098, filed February 9,1959 for Lead Making Machine now Patent Number 3,046,6 3 6.
  • a terminal crimping press of the type described in the Albright application comprises a generally C-shaped frame member 2 having a reciprocable "ice ram 4 on which is mounted a movable or upper crimping die 6 which, during the crimping operation is moved towards and away from a lower crimping die or anvil 8.
  • the shear block and support are mounted on a. plate 18 which in turn is supported upon blocks 26), these blocks being secured to the front of the C-shaped frame member 2.
  • a fixed insulation cutting blade 22 and a movable blade 24 are mounted in supporting and guiding means 26 which in turn are secured to a block 2% on plate 13.
  • Movable blade 24 is secured at its end to a link 30 which is pivoted to the end of an arm 32 extending from a hub 34.
  • This hub is pivotally mounted between arms 36 extending from block 2 8 and has a second arm 38 which is pivotally connected at its end to the piston rod 40 of a piston-cylinder 42.
  • movable blade 24 moves towards fixed blade 22 to circumferentially cut the insulation of an insulated conductor inserted past these blades.
  • these blades are positioned behind the crimping dies as viewed in FIGURE 1 and that the remainder of the insulation stripping device is mounted in front of the dies so that the wire can be inserted past the dies into the space between the cutting blades.
  • the mechanism for gripping and pulling the insulated conductor is mounted on a bracket 44'- having a hub portion 4 6 which is pivotally mounted on a pin extending between upstanding arms 48 which project iirom a plate 50. This plate in turn is supported on the top surface of one of the blocks 20.
  • a spring (not specifically shown) is positioned beneath bracket 44 and normally biases this bracket upwardly to the position shown in FIGURE 1.
  • bracket '44 Secured to bracket '44 is a depending portion 52 from which a support plate 54 projects laterally, and a back plate 56.
  • a slide 58 bears against the surface of depending portion 52 and is reciprocable between gibs so.
  • a support plate 62 is secured to this slide for reciprocation therewith and a air of levers 64 are mounted on parallel axes 63 on the top surface of this support.
  • These levers extend inwardly and generally upwardly as viewed in FIGURE 1 toward the applicator press and have jaws 66 on their ends which are normally positioned adjacent the insulation cutting knives 22, 24.
  • the opposite ends of these lovers are resiliently biased towards each other by means of a spring 70' and are provided with cam [followers 74 which bear against a wedge shaped cam 72. This cam is on the end of an arm 76 pivoted at its lower end between brackets 7 8 which extend from support plate 62.
  • a spring 8b is secured to arm '76 intermediate its ends and has its opposite end secured to a pin on a bracket 82 which in turn is secured to slide member 53. This spring biases arm 76 in a clockwise direction as viewed in FIGURE 1 and tends to urge the wedge shaped cam member 72 to enter between the rollers '74 and close the wire gripping jaws.
  • a pneumatic piston cylinder at secured to a block 8 WllCh is secured to plate 54 has a piston rod which extends toward arm 76.
  • the end of this rod provides a yoke hi which is notched for the accommodation of a pin 92 in arm 76.
  • arm 76 is held upright against the force of spring 8% and cam '72 is held out of engagement with cam followers or rollers 74 so that the jaws remain open under the influence of spring 73.
  • piston rod 88 extends through a notch in L-shaped bracket 4 which is secured to slide member 58 so that the slide member is retracted during retraction of the piston rod.
  • the yoke on the end of the piston rod is spaced from the L-shaped bracket 94 so that there is a lost motion connection between the bracket and the yoke.
  • an adjustable stop in the form. of a screw 93 which extends through plate 55. This screw bears against the rearward face of bracket 82 when the slide is in its retracted position to permit accurate positioning of the stripped end of the Wire as is described below.
  • lso provided on plate 55 is a switch res having a switch button which is engaged by bracket 32 upon rearward movement of the slide and bracke As previously mentioned, the entire assembly is lowered during descent of the ram to position the stripped wire end in an uncrimped terminal on the lower crimping die.
  • Such lowering of the stripping mechanism is achieved by means of a depressor rod 1% carried by the ram which engages, during descent of the ram, an car 104 of plate 44.
  • Bar 164 extends over plate in so that the depressor rod lowers both plate 44 and plate ill during descent of the ram.
  • the operation of the device is as hollows assuming the parts are in the position of FIGURE 1.
  • the operator first inserts an unstripped wire past stripping jaws 66 and between the insulation cutting knives until a microswitch in block .28 is energized.
  • This microswitch opens a control valve (not specifically shown) which governs the admission of air into piston cylinder 4-2 to cause closure of the insulation-cutting blades and admission of air into the forward end of double-acting piston cylinder 86 to cause rearward movement of piston rod Insulation adjacent the end of the wire is circumferentially cut and immediately thereafter piston rod 8-8 is retracted so that cam 74-, under the influence of spring Ell, cams the rearward ends of the levers 64 apart thereby closing the gripping jaws.
  • bracket 9rd and slide -8 is retracted so that the jaws move away from the insulation-cutting knives and strip the end of the wire and position the stripped end over the uncrimped terminal on the lower crimping die.
  • microswitch 1% is energised and this microswitch initiates the cy le of the crimping press.
  • the ram then moves downwardly and prior to bottoming of the ram depressor rod 162 engages extension N34 to pivot or lower the entire stripper mechanism.
  • FIGURES 11A, MB, and 11C illustrate the manner in which the jaws as grasp the wire, pull it from between the closed insulation cutting blades 22., 2.4, and then move rearwardly and downwardly to position the 4 stripped end in the ferrule portion of an uncrimped terminal T.
  • the jaws should release their grip on the stripped wire slightly before the crimp is 1. .de in order that the strands of the wire will be free to move slightly as the terminal is crimped.
  • this action is achieved by means of a control switch actuated by the ram or some other element of the press immediately before the crimping die bottoms.
  • This switch is not shown but it will be understood that such a switch can be provided at any convenient location, for example, it can be energized by means of a cam on the crank shaft of the press if the crimping press is of the pneumatic type or it can be energized by the piston rod of the press it the press is of the pneumatic type.
  • cylinder 86' which corresponds to the cylinder 86 of the previous embodiment is positioned beneath plate 5% and is linked to slide member 558' by means of a lever $.16 pivotally mounted intermediate its ends.
  • a second cylinder 112 is provided in this embodiment which is mounted by means or" a plate its on slide member 5'3. t will be apparent that this embodiment substitutes a pneumatic piston cylinder for spring Si in the embodiment of FIGURE 1, and for this reason permits a somewhat tighter grip upon the insulated wire.
  • the micro switch 164) is located on the outside surface of plate 52 and closed by means of a pin which extends from the slide through a slot in the plate.
  • FIGURES 9 and 10 The operation of the embodiment of FIGURES 9 and 10 is substantially the same as the embodiment of PEG- URE 1. It will be appreciated that cylinder 112 should be actuated slightly before cylinder 36 in order that the wire will be gripped before the slide begins to retract.
  • FIGURE 11 shows the general appearance of one common type of crimping press when equipped with the terminal applicator of the instant invention.
  • This particular type of press has a continuously rotating flywheel in the press housing which is coupled to the press ram through a shaft and clutch as described in the above mentioned Albright application.
  • the terminal feed finger 122 for this type of press may be actuated by a hydraulic piston as indicated at 124.
  • Insulation stripping mechanism for use with a crimping apparatus of the type having a pair of relatively reciprocable dies and ram means for moving said dies relatively towards and away from each other, said mechanism comprising, a platform disposed adjacent said dies and movable in the direction of movement of said dies, a slide member on said platform movable towards and away from said dies, a pair of cooperatively aligned insulation cutting knives adjacent said dies and on the opposite side thereof from said platform, a pair of fingers pivoted intermediate their ends to said slide and having wire gripping jaws on one end thereof, said jaws being normally open and being normally disposed between said dies, a lever pivoted to said slide and having means on its end for engaging the opposite ends of said fingers to close said jaws, spring means engaging said lever and normally urging said lever into engagement with said jaws, piston cylinder means acting between said platform and said slide and engaging said lever in its extended position to hold said lever away from said opposite ends, said piston cylinder means having a lost motion connection with said slide whereby upon retraction of
  • Apparatus as set forth in claim 2 including means actuated by said slide upon retraction thereof for actuating said cram whereby said ram cycles only after stripping of said wire.
  • Apparatus for applying terminals to rthe ends of electrical conductors comprising, a pair of crimping dies movable relatively toward-s and away from each other, a platform disposed adjacent said dies on one side thereof, a pair of insulation stripping knives on the opposite side of said dies, insulation stripping means on said platform including a pair of wire gripping jaws normally extending between said dies, means on said platform to close and retnact said jaws after closure of said knives thereby to strip insulation from the end of a wire inserted between said dies, and means movable with one of said dies for engaging said platform and moving said platform towards the other of said dies thereby to position the end of said wire in an uncrimped connector disposed between said dies.
  • a device for applying electrical connectors to insulated wires comprising, a pair of crimping dies, means including a reciprocable ram for moving said dies relatively towards and away from each other, a pair of cooperatively aligned insulation cutting knives disposed in axial alignment with sm'd dies on one side thereof, a pair of wire gripping jaws adjacent said dies on the opposite side thereof, closing and moving means for closing said jaws and moving said jaws axially away from said dies, a platform disposed adjacent said die block and mounted for movement substantially normally of the axis thereof, said closing and moving means being mounted on said platform, and means on said ram for engaging said platform and moving said platform thereby to position the stripped end of a wire between said dies.
  • Apparatus for applying terminals to the ends of electrical conductors comprising, a pair of crimping dies, ram means for moving said dies relatively towards and away from each other, a platform adjacent said dies on one side thereof, engaging means on said ram for engaging said platform and moving said platform relatively towards one of said dies during movement of said ram, a pair of normally open wire gripping jaws on said platform normally disposed between said dies, a first piston cylinder means on said platform for closing said jaws and moving said jaws away from said dies, a pair of normally open insulation cutting knives adjacent said dies on the opposite side thereof from said platform, a second pneumatic piston-cylinder means for closing said knives, switch means for actuating said second pistoncylinder means upon positioning of a wire in said apparatus with its axis extending past said jaws, past said dies, and past knives, switch means for actuating said first piston cylinder means to close said jaws and strip said wire, and means responsive to said first piston cylinder for actuating said ram after stripping said wire

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
US834488A 1959-08-18 1959-08-18 Ladder strip crimper Expired - Lifetime US3115695A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NL254908D NL254908A (fi) 1959-08-18
NL126354D NL126354C (fi) 1959-08-18
US834488A US3115695A (en) 1959-08-18 1959-08-18 Ladder strip crimper
GB27702/60A GB887451A (en) 1959-08-18 1960-08-10 Improvements in and relating to devices for stripping insulation from wires
DE19601515348 DE1515348B1 (de) 1959-08-18 1960-08-12 Maschine zum Abisolieren von Schaltdrahtenden und zum Andrücken elektrischer Verbindungsklemmen
FR836041A FR1274498A (fr) 1959-08-18 1960-08-17 Dispositif pour dénuder les extrémités de fils métalliques isolés
CH932360A CH387119A (de) 1959-08-18 1960-08-17 Vorrichtung zum Entfernen der Isolierung am Ende eines Drahtes und Andrücken einer elektrischen Klemme an das abisolierte Drahtende
JP3511060A JPS3715576B1 (fi) 1959-08-18 1960-08-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US834488A US3115695A (en) 1959-08-18 1959-08-18 Ladder strip crimper

Publications (1)

Publication Number Publication Date
US3115695A true US3115695A (en) 1963-12-31

Family

ID=25267052

Family Applications (1)

Application Number Title Priority Date Filing Date
US834488A Expired - Lifetime US3115695A (en) 1959-08-18 1959-08-18 Ladder strip crimper

Country Status (7)

Country Link
US (1) US3115695A (fi)
JP (1) JPS3715576B1 (fi)
CH (1) CH387119A (fi)
DE (1) DE1515348B1 (fi)
FR (1) FR1274498A (fi)
GB (1) GB887451A (fi)
NL (2) NL254908A (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247571A (en) * 1960-01-27 1966-04-26 Amp Inc Crimping machine
US3270392A (en) * 1963-10-14 1966-09-06 Amp Inc Coaxial connector tool
CN117458244A (zh) * 2023-12-26 2024-01-26 深圳市瀚川精密机械有限公司 汽车安全气囊线束自动组装设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5775237A (en) * 1980-10-28 1982-05-11 Osawa Press Seisakusho:Kk End processing machine for wire rod
CH670730A5 (fi) * 1986-05-31 1989-06-30 Klaussner Hans Jurgen

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975005A (en) * 1929-11-06 1934-09-25 Kingsbury Machine Tool Corp Indexing and control mechanism for a metal working machine
US2429938A (en) * 1941-10-04 1947-10-28 Greenlee Bros & Co Multiple unit machine tool
GB609834A (en) * 1946-02-27 1948-10-07 Percy Archibald Sporing A machine for stripping the insulation from the ends of insulated electric conductors
US2706847A (en) * 1949-08-18 1955-04-26 Emhart Mfg Co Apparatus for assembling the elements of liquid-dispensing containers
US2765685A (en) * 1954-06-07 1956-10-09 North American Aviation Inc Wire stripper
US2774130A (en) * 1953-04-27 1956-12-18 Aircraft Marine Prod Inc Insulation stripping applicator and methods of application
US2859290A (en) * 1955-04-07 1958-11-04 Bullard Co Machine tool controller

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1433320A (en) * 1922-10-24 Charles john wersel
US2671363A (en) * 1950-08-28 1954-03-09 Gen Electric Electrically-controlled cable stripping machine
CA623909A (en) * 1955-06-13 1961-07-18 Amp Incorporated Electrical terminal applicator
US2800158A (en) * 1955-07-15 1957-07-23 Martines Rene Machine for crimping the arms of an electrical terminal about an electrical conductor

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1975005A (en) * 1929-11-06 1934-09-25 Kingsbury Machine Tool Corp Indexing and control mechanism for a metal working machine
US2429938A (en) * 1941-10-04 1947-10-28 Greenlee Bros & Co Multiple unit machine tool
GB609834A (en) * 1946-02-27 1948-10-07 Percy Archibald Sporing A machine for stripping the insulation from the ends of insulated electric conductors
US2706847A (en) * 1949-08-18 1955-04-26 Emhart Mfg Co Apparatus for assembling the elements of liquid-dispensing containers
US2774130A (en) * 1953-04-27 1956-12-18 Aircraft Marine Prod Inc Insulation stripping applicator and methods of application
US2765685A (en) * 1954-06-07 1956-10-09 North American Aviation Inc Wire stripper
US2859290A (en) * 1955-04-07 1958-11-04 Bullard Co Machine tool controller

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247571A (en) * 1960-01-27 1966-04-26 Amp Inc Crimping machine
US3270392A (en) * 1963-10-14 1966-09-06 Amp Inc Coaxial connector tool
CN117458244A (zh) * 2023-12-26 2024-01-26 深圳市瀚川精密机械有限公司 汽车安全气囊线束自动组装设备
CN117458244B (zh) * 2023-12-26 2024-04-30 深圳市瀚川精密机械有限公司 汽车安全气囊线束自动组装设备

Also Published As

Publication number Publication date
FR1274498A (fr) 1961-10-27
CH387119A (de) 1965-01-31
DE1515348B1 (de) 1970-07-16
JPS3715576B1 (fi) 1962-09-29
NL254908A (fi)
NL126354C (fi)
GB887451A (en) 1962-01-17

Similar Documents

Publication Publication Date Title
US4114253A (en) Application for terminals in strip form
US3184950A (en) Connector feeding device
US4139937A (en) Apparatus for applying a tubular insulating housing to an electrical connector secured to a wire
US2631213A (en) Machine for attaching metallic terminals to metallic wire
US2592276A (en) Article assembling apparatus
US3867754A (en) Stripper crimper machine
US3552449A (en) Machine for securing and electrically connecting an electrical cable to an electrical connector
US3553814A (en) Terminal applicator for terminals in strip form
CA1155641A (en) Wire terminating apparatus
US3479718A (en) Stripping and crimping apparatus
US3155136A (en) Apparatus for fabricating wireconnector assemblies
GB829501A (en) Machines and methods for making electrical leads
GB756496A (en) Improvements in or relating to methods of and apparatus for applying electrical connectors to insulated conductors
US3455006A (en) Wire positioning apparatus
US3588984A (en) Stripping and crimping apparatus
US3115695A (en) Ladder strip crimper
US3239924A (en) Electrical terminal applicator
GB1467671A (en) Crimping means
US4598570A (en) Apparatus for crimping electric terminals
US3481018A (en) Electrical connector crimping apparatus
US4043032A (en) Terminal applicator apparatus for terminals in strip form
US3628228A (en) Apparatus for crimping electrical connectors to wires
EP0375458A1 (en) The stripping and terminating of conductors in multi core cables
US3386153A (en) Method and apparatus for forming an insulated electrical connection
US3999273A (en) Insulated wire splice machine