Multiple indent die compression tool

• US 4,261,194 A
• Filed: 07/23/1979
• Issued: 04/14/1981
• Est. Priority Date: 07/23/1979
• Status: Expired due to Term

• Current Assignee: FL Industries Incorporated
• Original Assignee: International Telephone & Telegraph Corp. (ITT, Inc.)
• Inventors: Stephens, Francis E.
• Primary Examiner(s): Larson, Lowell A.
• Assistant Examiner(s): Crosby, Gene P.
• Application Number:
  US06/060,021
• Time in Patent Office: 631 Days
• Field of Search: 72/402, 72/409, 72/410, 72/412, 72/452, 72/453.15, 72/453.16, 72/399, 72/400, 72/401
• US Class Current: 72/402
• CPC Class Codes: H01R 43/042 Hand tools for crimping
• CPC Class Codes: H01R 43/0427 fluid actuated hand crimping tools

Abstract

A multiple indent die device for use with compression tools for crimping ductile tubular connectors on cables and the like. The device includes a pair of opposed die holders adapted for mounting between the ram and anvil of a compression tool for movement toward and away from each other. Each die holder includes a constrained indentor die which moves relative to the other indentor die and solely in the direction of movement of the die holders. A first movable indentor die is pivotally mounted to one of the die holders and about an axis which is parallel to the axis of the tubular connector and engages an inclined surface on the other die holder for radially inward movement toward the axis of the tubular connector and generally between the constrained indentor dies as the die holders are moved toward one another. A second movable indentor die is similarly mounted to either one of the die holders for engaging an inclined surface on its opposed die holder.

Claims

1. A crimping tool for crimping a tubular ductile metallic connector onto an electrical conductor by crimping the connector about a portion of the length thereof and in four circumferentially spaced and in radially inward directions, said tool comprising, in combination:

a pair of opposed die holders mounted within said tool for movement toward and away from each other, with each die holder having a constrained indentor die member mounted thereon for relative movement solely in the direction of movement of said die holders;

a first movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to the axis of said tubular connector and cammingly engaging an inclined surface of the other one of said die holders for movement toward said axis of said tubular connector as said die holders are moved toward one another; and

,

a second movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to the axis of said tubular connector for cammingly engaging a second inclined surface on the opposed die holder for movement toward said axis of said tubular connector as said holders are moved toward one another.

2. The crimping tool according to claim 1, wherein said first and second pivotally mounted indentor dies are each mounted to a common one of said die holders and wherein said other one of said die holders includes both of said inclined surfaces.

3. The device according to claim 2, wherein each of said indentor dies includes an elongated and cross-sectionally generally triangular connector engaging surface with the apex thereof being generally directed toward, and forming a connector engaging line generally parallel to, said axis of said connector.

4. The crimping tool according to claim 1, wherein each of said die holders includes one of said first and second movably mounted indentor dies which engages one of said inclined surfaces on the other of said die holders.

5. The device according to claim 4, wherein each of said indentor dies includes an elongated and cross-sectionally generally triangular connector engaging surface with the apex thereof being generally directed toward, and forming a connector engaging line generally parallel to, said axis of said connector.

6. The crimping tool according to claim 1, wherein said die holders are mounted between a moving ram and fixed anvil of said tool and wherein a first one of said dies is mounted adjacent said anvil and includes a lost-motion mounting wherein said first one of said die holders is translatable over a predetermined distance toward and away from said anvil and wherein said constrained indentor die of said first one of said die holders includes means for yieldably urging said first one of said die holders away from said anvil.

7. The crimping tool according to claim 6, wherein said indentor die of said first one of said die holders includes a member slidably engaging and extending through an opening in said first one of said die holders and into engagement with said anvil and wherein a spring is provided between said first one of said die holders and said anvil.

8. A multiple indent die device which is insertable in a crimping tool for crimping a hollow ductile metallic connector having a generally longitudinal axis onto an elongated member inserted in said connector by crimping the connector about a portion of the length thereof and in four peripherally spaced and inward directions, said device comprising, in combination:

a pair of opposed die holders adapted for mounting within said tool for movement toward and away from each other with each die holder having a constrained indentor die member mounted thereon for relative movement solely in the direction of movement of said die holders;

a first movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to said axis of said connector and cammingly engaging an inclined surface of the other one of said die holders for movement toward said elongated member in response to the movement of said die holders toward one another; and

,

a second movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to said axis of said connector for cammingly engaging a second inclined surface on the opposed die holder for movement toward said elongated member in response to the movement of said die holders toward one another.

9. The device according to claim 8, wherein said first and second pivotally mounted dies are each mounted to a common one of said die holders and wherein said other one of said die holders includes both of said inclined surfaces.

10. The device according to claim 8, wherein each of said die holders includes one of said first and second movably mounted dies which engages one of said inclined surfaces on the other of said die holders.

11. The device according to claim 9, wherein each of said indentor dies includes an elongated and cross-sectionally generally triangular connector engaging surface with the apex thereof being generally directed toward said axis of said connector.

12. The device according to claim 10, wherein each of said indentor dies includes an elongated and cross-sectionally generally triangular connector engaging surface with the apex thereof being generally directed toward said axis of said connector.

13. A multiple indent die device which is insertable in a crimping tool for crimping a hollow ductile metallic connector having a generally longitudinal axis onto an elongated member inserted in said connector by crimping the connector about a portion of the length thereof and in four peripherally spaced and inward directions, said device comprising, in combination:

a pair of opposed die holders adapted for mounting within said tool for movement toward and away from each other with each die holder having an indentor die member mounted thereon for relative movement in the direction of movement of said die holders;

a first movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to said axis of said connector, wherein said first movably mounted indentor die cammingly engages an inclined surface of the other one of said die holders for movement toward said elongated member in response to the movement of said die holders toward one another; and

,

a second movably mounted indentor die pivotally mounted to one of said holders about an axis which is parallel to said axis of said connector for cammingly engaging an inclined surface on its opposed die holder for movement toward said elongated member in response to the movement of said die holders toward one another.

14. The device according to claim 13, wherein said first and second pivotally mounted dies are each mounted to a common one of said die holders and wherein said other one of said die holders includes both of said inclined surfaces.