Insertion tool operable in accordance with a predetermined program to insert a plurality of conductors in insulation-piercing contacts disposed on opposite sides of an electrical connector

• US 3,967,356 A
• Filed: 12/11/1974
• Issued: 07/06/1976
• Est. Priority Date: 10/19/1973
• Status: Expired due to Term

• Current Assignee: Amphenol Corporation
• Original Assignee: Bunker Ramo Corporation
• Inventors: Holt, Harley Raymond
• Primary Examiner(s): Hall, Carl E.
• Application Number:
  US05/531,830
• Time in Patent Office: 573 Days
• Field of Search: 29/203 MW, 29/203 DT, 29/203 HT, 29/203 H, 29/203 P, 29/203 D, 29/203 R, 29/628
• US Class Current: 29/701
• CPC Class Codes: H01R 43/01 for connecting unstripped conductors to contact members having insulation cutting edges
• CPC Class Codes: Y10T 29/53004 with means to regulate operation by use of templet, tape, card or other replaceable information supply
• CPC Class Codes: Y10T 29/53039 with control means energized in response to activator stimulated by condition sensor
• CPC Class Codes: Y10T 29/53235 Means to fasten by deformation

Abstract

Apparatus for inserting a plurality of insulated conductors in respective insulation-piercing contacts of an electrical connector employs a programmer for controlling the movement of a carriage along the electrical connector and for controlling the insertion of a predetermined number of conductors on each side of the connector. The carriage is mounted for movement along the connector and is programmed for rest insertion positions whereat insertion tools are operated to insert and terminate the conductors. The programming and indexing mechanism includes a ratchet operated by the insertion mechanism to cock, via a torsion spring, a programming drum or cylinder which limits movement of the carriage to define positions along the connector. At these positions, the insertion mechanism is operated to insert a plurality of conductors, for example five conductors, on each side of the electrical connector.

Claims

1. Apparatus for terminating a plurality of free-ended insulated conductors in respective insulation-piercing contact portions arranged in separate rows on each side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

a plurality of insertion levers each including an upper and a lower end and each pivotally mounted in alignment with each other on opposite sides of said connector support means;

a pair of conductor insertion tools each mounted at said upper end of a respective insertion lever and each including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion;

a circuit including a device having extensible means connected to said lower ends of said insertion levers, first switch means operable to cause said extensible means of said device to pivot the upper ends of said insertion levers toward each other to effect conductor insertion, and second switch means operated by one of said levers upon completion of insertion to reverse said device and withdraw said extensible means; and

insertion lever carriage means mounted for movement relative said connector support means between points spaced a distance of at least the spacing between the parallel content portions of a row.

2. Apparatus for terminating a plurality of free-ended insulated conductors in respective insulation-piercing contact portions arranged in separate rows on each side of an electrical connector, said apparatus comprising:

a base;

connector support means mounted on said base for supporting the connector with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

a carriage mounted on said base for movement along said connector support means;

a pair of conductor insertion means pivotally mounted on said carriage on opposite sides of said connector support means, each insertion means including at least one insertion member mounted facing the other like member for engaging and forcing respective conductors into insulation-piercing contact portions on opposite sides of the connector;

indexing means coupled to said carriage for defining predetermined distances between insertion positions equal to at least the contact portion spacing, said indexing means coupled to and operated by one of said insertion means; and

a fluid control circuit for controlling movement of said carriage and pivoting of said insertion means, including first and second fluid operated cylinders having respective first and second extensible means, said first extensible means connected to said insertion means, said second extensible means connected to said carriage, manually operated first switch means connected in circuit with said first cylinder and operated to effect conductor insertion, second switch means connected to said first cylinder and operated by one of said insertion means to reverse the cylinder circuit connections and effect withdrawal of said insertion means, and third switch means connected in circuit with said second cylinder and operated by one of said insertion means upon withdrawal thereof to effect movement of said carriage from said one insertion position to another.

3. The apparatus of claim 2, comprising:

an upstanding member supported by said base;

said carriage means carried by said upstanding member for movement along said connector support means; and

said second cylinder mounted on said upstanding member.

4. The apparatus of claim 2, comprising:

a carriage support member extending from said base and including a bore therethrough; and

said carriage including a rod slidably mounted in said bore and connected to said second extensible means, and a frame connected to said rod and mounting said conductor insertion means.

5. The apparatus of claim 2, comprising:

a pair of spaced-apart support members extending from said base, one of said support members including a pair of bores therein and the other support member including a bore therein aligned with one of the bores of said one support member; and

said carriage including a pair of rods slidably mounted in said bores of said one support member, said second cylinder mounted on said other support member with said second extensible means extending through said bore of said second support member and connected to said rod extending through the bore aligned therewith, and a frame connected to said rods and mounting said conductor insertion means.

6. The apparatus of claim 2, wherein said first cylinder is mounted on said carriage for movement therewith.

7. The apparatus of claim 2, wherein said first cylinder is mounted on said carriage with said first extensible means extendible transversely of the direction of movement of said carriage.

8. The apparatus of claim 2, wherein said first cylinder and said first extensible means are pivotally connected between said pair of conductor insertion means to support said first cylinder in a freely swinging relationship to effect equalization of insertion forces on each side of the connector.

9. The apparatus of claim 2, comprising:

a support member extending from said base slidably supporting said carriage and carrying said connector support means.

10. The apparatus of claim 9, wherein said connector support means includes a cantilever mounted member having a slot therein for receiving and aligning the connector for the insertion operations.

11. The apparatus of claim 2, wherein said indexing means comprises:

a rotatable drum having an axis of rotation extending in the direction of carriage movement and first stop means spaced circumferentially and axially of said drum;

second stop means connected to said carriage for engaging said first stop means to limit movement of said carriage and define said insertion positions; and

a ratchet coupled to said drum and operated by at least one of said insertion means.

12. The apparatus of claim 11, wherein said plurality of first stop means includes a plurality of slots in said drum each opening through one end of said drum and extending different distances to respective closed ends along the surface of said drum, and said second stop means includes a projection to be received by said slots to engage the closed ends thereof and limit carriage movement.

13. The apparatus of claim 11, comprising:

a torsion spring connecting said ratchet to said drum; and

wherein

said first and second stop means are engageable to prevent rotation of said drum by said spring until movement of said carriage effects disengagement of said first and second stop means.

14. The apparatus of claim 11, wherein each of said insertion means includes a pawl extending therefrom to engage said ratchet, said one of said pawls effective to initiate rotation of said ratchet in a predetermined direction and the other of said pawls effective to complete rotation of said ratchet.

15. The apparatus of claim 13, comprising:

said torsion spring connecting said ratchet and said drum, said torsion spring twisted sufficiently to rotate said drum only by the cooperative action of both of said pawls.

16. The apparatus of claim 14, wherein:

said first extensible means is pivotally connected between said pair of conductor insertion means to support said first cylinder in a freely swinging relationship to effect equalization of insertion forces on each side of the connector;

and comprising a torsion spring connecting said ratchet and said drum, said spring twisted sufficiently to rotate said drum only by the cooperative action of both of said pawls,

said second switch and its operating insertion means mounted relative each other to effect operation of said second switch only upon equalization of insertion forces.

17. Apparatus for terminating a plurality of free-ended insulated conductors in respective insulation-piercing contact portions arranged in separate rows on each side of an electrical connector, said apparatus comprising:

a base;

front and rear parallel support members extending from said base, said support members having a plurality of bores therethrough;

a connector support mounted on and extending forwardly of said front support member including a connector alignment slot for receiving the electrical connector with the contact portions thereof oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

a carriage mounted for movement along said connector support including a pair of rods slidably mounted in respective ones of the bores of said front support member and a carriage frame mounted at the forward ends of said rods and spanning said connector support;

a carriage cylinder mounted on said rear support member including an extensible member extending through one of said bores of said rear support member and connected to one of said shafts for moving said carriage;

a pair of conductor insertion levers each having an upper end and a lower end and pivotally connected to said carriage frame between said upper and lower ends on opposite sides of said connector support;

a pair of insertion means mounted on respective ones of said upper ends and each including a plurality of insertion members for engaging and forcing respective conductors into the insulation-piercing contact portions;

insertion cylinder means including an extensible member, said insertion cylinder means and said extensible member pivotally connected to respective ones of said lower ends of said insertion levers to pivotally suspend said insertion cylinder means and provide for equalization of insertion forces across the connector;

a first shaft mounted for rotation in said frame;

a ratchet carried by said first shaft and operated by said insertion levers;

a torsion spring connected to said first shaft for storing energy upon rotation of said ratchet;

a second shaft rotatably mounted in one of said bores in said rear support member;

an indexing cylinder mounted on said second shaft, said cylinder including a plurality of circumferentially spaced slots opening to and extending from the rear end of said cylinder to close slot ends at different points along said cylinder, said cylinder coupled to said torsion spring for rotation upon release of the energy stored in said spring;

a projection extending from one of said carriage rods for receipt by said cylinder slots to prevent rotation of said cylinder and to limit the movement of said carriage to define points of carriage rest for conductor insertion; and

a fluid control circuit connected to said carriage and insertion cylinders and operable to move said carriage forward and rearward and to pivot said insertion levers in accordance with a predetermined program.

18. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions disposed in separate rows on each side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the channels oriented to receive respective conductors disposed immediately adjacent and parallel thereto, including a support member and a cantilever member extending from said support member;

carriage means mounted for movement relative said cantilever support member, including a frame spanning said cantilever member;

a pair of insertion levers each including an upper end and a lower end and each pivotally mounted on said frame on opposite sides of said cantilever member in alignment with each other;

a pair of conductor insertion tools each mounted at said upper end of a respective insertion lever and each including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

a control circuit including a device having extensible means connected to said lower ends of said insertion levers, first switch means operable to cause said extensible means of said device to pivot the upper ends of said insertion levers toward each other to effect conductor insertion, and second switch means operated by one of said levers upon completion of insertion to reverse said device and withdraw said extensible means.

19. The apparatus of claim 18, comprising a pair of spaced combs mounted on said cantilever member for receiving the connector therebetween, said combs having teeth defining slots aligned with the channels of the connector for receiving the conductors therein.

20. The apparatus of claim 19, wherein each of said slots includes a cutting edge and each of said insertion blades includes a cutting edge cooperable with said slot cutting edges to cut the respective conductors to predetermined lengths immediately prior to insertion.

21. The apparatus of claim 20, comprising a pair of L-shaped structures depending from respective ones of said insertion tools to engage the underside of said cantilever member and prevent said insertion tools from riding up on and not cutting the conductors.

22. The apparatus of claim 20, comprising means carried by each of said insertion tools for engaging said conductor support means to ensure conductor cutting by maintaining the cutting edges of said blades in a cooperable cutting relationship with the cutting edges of said slots.

23. The apparatus of claim 19, wherein each of said insertion tools is pivotally mounted to the respective insertion lever, and comprising a pair of insertion tool guides mounted on said frame for guiding the respective cutting tools horizontally as said cutting tools are pivotally moved toward the connector.

24. The apparatus of claim 23, wherein said guides are spaced from the support position of the connector at the nearest point to the support position, the pivotal connections of said insertion tools move toward each other and extend so as to be nearer the conductor support position than said nearest points whereat forces other than horizontally through the pivotal connections may effect undesired pivoting of said insertion tools, and comprising means carried by each of said insertion tools for engaging said connector support means to prevent undesired pivoting and maintain the desired horizontal movement of said insertion tools.

25. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions disposed in separate rows on each side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the channels oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

a plurality of insertion levers each including an upper and a lower end and each pivotally mounted in alignment with each other on opposite sides of said connector support means;

a pair of conductor insertion tools each mounted at said upper ends of respective insertion levers and each including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion;

an automatic control circuit including first means connected between said lower ends of said insertion levers for pivoting said insertion levers to effect conductor insertion and second means operable in response to at least one of said levers being pivoted upon completion of insertion to reverse the operation of said first means and pivot said levers in the opposite direction; and

insertion lever carriage means mounted for movement relative said connector support means between points spaced a distance of at least the spacing between the insulation-piercing contact portions of a row.

26. The apparatus of claim 25 comprising:

switch means mounted for operation by said carriage means at said spaced points to effect operation of said first means to cause insertion of said conductors.

27. The apparatus of claim 25 wherein the plurality of insulated conductors is in the form of a cable, and wherein said apparatus comprises:

a cable clamp mounted on said connector support means for releasable engagement with the cable to support the cable during insertion operations.

28. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the channels oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

a carriage mounted for movement relative said connector support means between points spaced a distance of at least the spacing between the insulation-piercing contact portions;

an insertion tool pivotally carried by said carriage means for movement transverse to the relative movement of said carriage means and including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact; and

an insertion programmer operable to effect relative movement to said spaced points between said carriage means and said support means and pivotal movement of said insertion tool in accordance with a predetermined sequence of operation.

29. Apparatus for terminating a plurality of insulated conductors, according to claim 28, wherein said insertion programmer comprises:

a fluid control circuit including an indexing cylinder connected to said carriage and operated by said fluid control circuit to move said carriage to said spaced points and an insertion cylinder connected to said insertion tool for causing the transverse movement of said insertion tool in accordance with the predetermined sequence of operation.

30. Apparatus for terminating a plurality of insulated conductors, according to claim 28, comprising:

a member pivotally carried by said carriage means pivotally mounting said insertion tool and pivoted by said programmer; and

guide means for said insertion tool on said carriage to provide rectilinear transverse movement thereof as said member is pivoted.

31. In an apparatus of the type wherein a conductor terminating tool is carried by a pivotally mounted lever to press a conductor into a conductor receiving portion of an electrical contact, the tool including a cutting edge which is cooperable with a cutting edge of a cutting member disposed adjacent the contact to cut the conductor before the conductor is pressed into the conductor receiving portion of the contact, the improvement comprising:

means for converting the arcuate movement of the lever

into a rectilinear movement of the tool, including a pivotal connection of the tool to the lever, a tool guide slidably mounting the tool for movement toward and away from the conductor receiving portion of the contact, and

means carried by the tool for engaging the cutting member on an edge opposite its cutting edge to hold down the tool and prevent overriding and separation of the cutting edges due to engagement of a conductor.

32. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

movable means mounted for movement relative said connector support means to points spaced according to the spacing between the insulation-piercing contact portions;

an insertion tool mounted on said movable means for movement transverse to the relative movement of said movable means and including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer, said programmer including means defining the positions of said spaced points and means operable to effect relative movement between said movable means and said connector support means to said spaced points and movement of said insertion tool in accordance with a predetermined sequence of operation.

33. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the contact portions oriented to receive respect conductors disposed immediately adjacent and parallel thereto;

a carriage mounted for movement relative said connector support means between the points spaced a distance of at least a spacing between the insulation-piercing contact portions;

an insertion tool mounted on said carriage means for movement transverse to the relative movement of said carriage means and including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer, said programmer including means defining selected spaced points and means operable to effect relative movement to said selected spaced points between said carriage means and said support means and transverse movement of said insertion tool in accordance with a predetermined sequence of operation.

34. Apparatus for terminating a plurality of individual insulated conductors of a cable in respective insulation-piercing contact portions supported by an electrical device, the cable having at least a portion of each insulated conductor free to move, said apparatus comprising:

a cable clamp for holding the cable in a fixed position with the individual conductors free to be positioned immediately adjacent and parallel to respective contact portions;

support means for supporting the electrical device;

insertion means for inserting the insulated conductors into the insulation-piercing contact portions;

a frame mounting said insertion means and said support means for relative movement of said insertion means with respect to said cable clamp and support means to spaced points defined by the spacing of the contact portions, said insertion means including an insertion tool mounted for movement transverse to the direction of relative movement between said insertion means and said support means for engaging and pressing a conductor into an insulated-piercing contact portion; and

insertion programming means, including means storing a predetermined sequence of relative positioning movement corresponding to selected spaced points and means operable to effect said relative movement to said selected spaced points and transverse movement of said insertion tool in accordance with a predetermined sequence of operation.

35. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

insertion means including indexable means for movement to spaced points defined by the distances between the insulation-piercing contact portions, and an insertion tool mounted for movement transverse to the movement of said indexable means for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer including first means defining selected spaced points and second means coupled to said first means and operable to effect indexing of said indexable means to selected points and transverse movements of said insertion tool in accordance with a predetermined sequence of operation.

36. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector at a fixed location with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

movable means mounted for movement with respect to said connector support means to points spaced according to the spacing between the insulation-piercing contact portions;

an insertion tool mounted on said movable means for movement toward and away from a supported connector transverse to the movement of said movable means and including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer, including a programming element defining selected spaced points and program controlled means connected to said programming element and operable to effect movement of said movable means with respect to said connector support means to said spaced points and transverse movements of said insertion tool in accordance with a predetermined sequence of operation.

37. Apparatus according to claim 36, wherein said insertion tool comprises a predetermined number of said insertion blades, and said insertion programmer includes means for indexing said movable means a number of said spaced points corresponding to said predetermined number for terminating a plurality of conductors at the same time.

38. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported in separate rows on each side of an electrical connector, said apparatus comprising:

connector support means for supporting the connector with the channels oriented to receive respective conductors disposed immediately adjacent and parallel thereto, including a support member and a cantilever member extending from said support member;

carriage means mounted for movement relative said cantilever support member, including a frame spanning said cantilever member;

a pair of insertion arms, each of said insertion arms mounted for movement on said frame on opposite sides of said cantilever member in alignment with each other;

a pair of conductor insertion tools each mounted on a respective insertion arm and each including at least one insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

a control circuit including a device having extensible means connected to said insertion arms, first switch means operable to cause said extensible means of said device to move said insertion arms toward each other to effect conductor insertion, and second switch means operated by one of said arms upon completion of insertion to reverse said device and withdraw said extensible means.

39. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical device, said apparatus comprising:

support means for supporting the electrical device with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

an insertion tool, said insertion tool and said support means mounted for movement, one relative the other, to positions spaced according to the spacing between the insulation-piercing contact portions of the electrical device, said insertion tool including at least one movably mounted insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer for controlling the relative positioning and the movement of said insertion blade, said programmer including program means defining selected relative positions of said insertion tool and device support means, start means operable to produce a start control, and sequence means connected to said program means, to said insertion tool and to said start means and responsive to the operation of said start means to control the relative positioning and the movement of said insertion blade in accordance with a predetermined sequence of operation.

40. Apparatus for terminating a plurality of insulated conductors in respective insulation-piercing contact portions supported on at least one side of an electrical device, said apparatus comprising:

support means for supporting the electrical device with the contact portions oriented to receive respective conductors disposed immediately adjacent and parallel thereto;

an insertion tool, said insertion tool and said support means mounted for movement, one relative the other, to positions spaced according to the spacing between the insulation-piercing contact portions of the electrical device, said insertion tool including at least one movably mounted insertion blade for engaging and pressing a conductor into an insulation-piercing contact portion; and

an insertion programmer for operating the terminating apparatus through a predetermined sequence of operation including repetitive relative positionings of said support means and insertion tool and repetitive movements of said insertion blade, said programmer including program means defining selected relative positions of said insertion tool and device support means, and sequence means connected to said program means and to said insertion tool and operable to control the relative positioning and the movement of said insertion blade in accordance with the predetermined sequence of operation.