Press transfer-electrical interconnect

Details Press transfer-electrical interconnect Press transfer-electrical interconnect

2000-01-25

2001-03-06

Vo, Peter (Department: 3721)

Presses

Automatic or material triggered control

Of material addition, deposition, or discharging

C100S049000, C100S207000, C072S405010

Reexamination Certificate

active

06196123

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The subject invention relates to work piece transfer assembly for a press including a reciprocating member and a series of longitudinally spaced in-line stations wherein each station is a further progression of a work piece forming process. More specifically, the invention relates to the electrical lead combination for establishing an electrical connection with a sensor on work piece engaging fingers extending from a transfer bar.
2. Description of the Prior Art
As alluded to above and as is well known in the art, such assemblies include a hollow transfer bar having walls and a motion transmitting mechanism for moving the bar inward, outward, and longitudinally for transferring work pieces through the press. A plurality of fingers are attached to the transfer bar for engaging and transferring work pieces through the press and a sensor is disposed on the finger for sensing a work piece. In order to transmit electrical signals to and from the sensor, an electrical lead is disposed within the hollow transfer bar for connection to the sensor.
Typical prior art assemblies are disclosed in U.S. Pat. Nos. 4,833,908 to Sofy et al; U.S. Pat. Nos. 4,852,381 and 4,895,013, both to Sofy, the inventor herein, and U.S. Pat. No. 5,074,141 to Takeuchi.
In most prior systems, the electrical lead passes through the walls of the transfer bar but must be totally removed for maintenance. In addition, the connectors are supported by the transfer bar and are exposed to damage.
SUMMARY OF THE INVENTION AND ADVANTAGES
The subject invention provides a work piece transfer assembly for a press including a reciprocating member and a series of longitudinally spaced in-line stations wherein each station is a further progression of a work piece forming process. More specifically, the assembly comprises a hollow transfer bar having walls and a motion transmitting mechanism for moving the transfer bar inward, outward, and longitudinally for transferring work pieces through the press. A finger is attached to the transfer bar for engaging and transferring work pieces through the press and a sensor is disposed on the finger for sensing a work piece. An electrical lead is disposed within said hollow transfer bar for connection to the sensor. The assembly is characterized by a input section of the electrical lead extending into the hollow transfer bar and an second cable section of the electrical lead extending from within the hollow transfer bar to the exterior thereof and an inline connector electrically interconnecting the sections within the hollow transfer bar for disconnecting the sections from one another to allow the sections to be removed from the hollow transfer bar independently from one another.


REFERENCES:
patent: 4833908 (1989-05-01), Sofy
patent: 5074141 (1991-12-01), Takeuchi
patent: 5327768 (1994-07-01), Yamashita
patent: 5363685 (1994-11-01), Luthi et al.
patent: 6000327 (1999-12-01), Moriyasu et al.

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