Live pilot sensing apparatus

Patent metadata

Field	Value
Publication number	US-10549330-B2
Application number	US-201615286790-A
Country	US
Kind code	B2
Filing date	Oct 6, 2016
Priority date	Oct 6, 2016
Publication date	Feb 4, 2020
Grant date	Feb 4, 2020

Abstract

A live pilot sensing apparatus is presented herein. The apparatus includes a pneumatic cylinder, sensing plate, and at least one stabilizing plate. The cylinder includes a piston and is configured to connect to the die of a stamping system. The sensing plate is configured to connect with the distal end of the piston. The stabilizing plate is configured to connect with an exposed segment along the cylinder piston, between the sensing plate and cylinder. Moreover, the piston is configured to react upon substantial contact between the sensing plate and a portion of a foreign object within the stamping system.

First claim

What is claimed is:

1. A live pilot sensing apparatus, the live pilot sensing apparatus comprising:
a pneumatic cylinder comprising a piston, the pneumatic cylinder configured to connect to a bottom die of a stamping system;
a sensing plate configured to connect with a distal end of the piston;
a first stabilizing plate configured to connect with a first location along the piston, the first location being between the sensing plate and the pneumatic cylinder;
a second stabilizing plate configured to connect with a second location along the piston, the second location being between the sensing plate and the first stabilizing plate; and
wherein the piston is configured to react upon contact between the sensing plate and a portion of a foreign object within the stamping system.

2. The live pilot sensing apparatus of claim 1 , further comprising at least one guide post configured to enhance stability of the sensing plate, the at least one guide post further configured to extend from the sensing plate and through the first stabilizing plate.

3. The live pilot sensing apparatus of claim 1 , wherein the pneumatic cylinder is further comprising a position sensor configured to connect with an operational control system of the stamping system, the position sensor further configured to send an operation signal upon a piston reaction.

4. The live pilot sensing apparatus of claim 3 , wherein the position sensor is further comprising a switch, wherein the position sensor sends the operation signal upon a material piston movement as monitored by the switch.

5. The live pilot sensing apparatus of claim 1 , wherein the sensing plate comprises a plurality of orifices configured to facilitate a sensitivity of the live pilot sensing apparatus.

6. The live pilot sensing apparatus of claim 1 , wherein the first stabilizing plate comprises a plurality of orifices configured to reduce weight of the live pilot sensing apparatus.

7. The live pilot sensing apparatus of claim 1 , wherein the pneumatic cylinder comprises a double-acting cylinder configuration.

8. The live pilot sensing apparatus of claim 1 , wherein the foreign object within the stamping system is a metallic strip having an operative movement through the stamping system.

9. A live pilot sensing apparatus configured to be connected to a bottom die of a stamping system, the live pilot sensing apparatus comprises:
a pneumatic cylinder having a double-acting cylinder configuration, the pneumatic cylinder comprising a piston and a position sensor, the pneumatic cylinder configured to connect to the bottom die;
the position sensor comprising a switch, wherein the position sensor sends an operation signal upon a material piston movement as monitored by the switch;
a vertically-oriented sensing plate configured to connect with a distal end of the piston;
horizontally-oriented first and second stabilizing plates configured to connect with respective locations along the piston between the vertically-oriented sensing plate and cylinder;
a plurality of guide posts configured to enhance the stability of the vertically-oriented sensing plate, each of the plurality of guide posts is further configured to extend peripherally from the vertically-oriented sensing plate and through each of the first and second stabilizing plates; and
wherein the piston is configured to react upon contact being made upon the vertically-oriented sensing plate being lowered onto a portion of a metallic strip having an operative movement through the stamping system.

10. The live pilot sensing apparatus of claim 9 , wherein the vertically-oriented sensing plate comprising a plurality of orifices configured to facilitate a sensitivity of the live pilot sensing apparatus.

11. The live pilot sensing apparatus of claim 9 , wherein the first and second stabilizing plates each comprise a plurality of orifices configured to reduce live pilot apparatus weight.

12. A method of sensing an anomalous position of at least a portion of a metallic strip having an operative movement through a stamping system, the method comprising:
(a) providing a bottom die of the stamping system;
(b) providing a live pilot sensing apparatus, the apparatus comprising:
a pneumatic cylinder comprising a piston, the pneumatic cylinder configured to connect to the bottom die;
a sensing plate configured to connect with an exposed segment of the piston;
a first stabilizing plate configured to connect with a first location along the piston, the first location being between the sensing plate and the pneumatic cylinder;
a second stabilizing plate configured to connect with a second location along the piston, the second location being between the sensing plate and the first stabilizing plate; and
wherein the piston is configured to react upon contact between the sensing plate and the portion of the metallic strip;

(c) allowing the live pilot sensing apparatus to be at a position for the piston to react when contact is made between the sensing plate and the portion of the metallic strip;
(d) operatively moving the metallic strip through the stamping system;
(e) allowing a top die of the stamping system to be lowered to perform a stamping operation on the portion of the metallic strip;
(f) determining if the piston has reacted through the contact between the sensing plate and the metallic strip; and
(g) based on (f), stopping operation of the stamping system prior to a material connection between the top die and the metallic strip.

13. The method of claim 12 , wherein the live pilot sensing apparatus is further comprising at least one guide post configured to enhance stability of the sensing plate, the at least one guide post further configured to extend from the sensing plate and through the first stabilizing plate.

14. The method of claim 12 , wherein:
the pneumatic cylinder is further comprising a position sensor configured to connect with an operational control system of the stamping system;
the position sensor further configured to send an operation signal upon the piston being moved to a non-default position; and
step (g) further comprising, upon the piston being moved to a non-default position, via the position sensor, sending the operation signal to cause the operational control system to initiate a process of stopping operation of the stamping system.

15. The method of claim 12 , wherein the sensing plate comprising a plurality of orifices configured to facilitate a sensitivity of the live pilot sensing apparatus.

16. The method of claim 12 , wherein the first stabilizing plate comprising a plurality of orifices configured to reduce apparatus weight.

17. The method of claim 12 , wherein the pneumatic cylinder comprises a double-acting cylinder configuration.

Assignees

• Gm Global Tech Operations Llc

Inventors

• Foreman Thomas M

Classifications

• B21D22/02

  Stamping using rigid devices or tools · CPC title

• B21C51/00 Primary

  Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F · CPC title

• G01D5/12

  using electric or magnetic means (G01D5/06 takes precedence) · CPC title

• B21D55/00

  Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass (for presses in general B30B; safety devices in general F16P) · CPC title

• B21D43/021 Primary

  Control or correction devices in association with moving strips · CPC title