Method and system for control of an axial skinning apparatus

Patent metadata

Field	Value
Publication number	US-10052792-B2
Application number	US-201414890627-A
Country	US
Kind code	B2
Filing date	May 21, 2014
Priority date	Mar 17, 2011
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A control system for an axial skinning apparatus ( 100 ), including: •a force to cause a ceramic honeycomb part ( 110 ) to pass through the skinning apparatus ( 100 ); •a force that urges flowable cement on to the ceramic honeycomb part ( 110 ); •a sensor to detect the force on the cement; •a sensor to detect the force on the ceramic part; and •a controller ( 300 ) which receives: •a signal from the sensor on the flowable cement, •a signal from the sensor on the ceramic part ( 110 ), or both, and the controller ( 300 ) controls the pressure set point ( 310 ) of the cement source based on one or both of the received signals, and the controller ( 300 ) adjusts control parameters using feedback control and pseudo feed forward control. A method of using the axial skinning apparatus ( 100 ) is also disclosed.

First claim

What is claimed is:

1. A control system for an axial skinning apparatus comprising a tank for supplying a flowable cement to a manifold via tubing between the tank and the manifold, the manifold being configured to deliver the cement to a unipipe which is configured to apply the cement to an outer surface of a ceramic part, the control system comprising:
a combined feedback control and pseudo feed forward control controller which is configured to generate a tank pressure set point control parameter in response to a tank pressure of the cement in the tank, and in response to a manifold pressure of the cement in the manifold in comparison to a threshold pressure PThreshold.

2. The control system of claim 1 wherein the controller is configured to generate a tank pressure set point control parameter also in response to a real-time measurement of distance travelled as the part goes through the unipipe (% Travel) to determine nominal part velocity while traversing through the unipipe.

3. The control system of claim 1 wherein controller is configured to generate a tank pressure set point control parameter also in response to a unipipe exit pressure measurement.

4. A method of applying cement to first and second ceramic parts sequentially moved through a cylindrical tube, wherein the tube is attached to a manifold which feeds the cement from a tank to an outer surface of each part that passes through the cylindrical tube, the method comprising:
generating a tank pressure set point control parameter in response to a tank pressure of the cement in the tank for the first part;
remove the first part from the cylindrical tube;
allow pressure in the manifold to build up;
introduce the second part into the cylindrical tube when pressure in the manifold is greater than a threshold pressure value;
apply cement to the outer surface of the second part via combined feedback control and pseudo feed forward control.

5. The method of claim 4 wherein the tank pressure set point control parameter is also generated in response to a real-time measurement of distance travelled as the second part goes through the cylindrical tube (% Travel) to determine nominal part velocity while traversing through the cylindrical tube.

6. The method of claim 5 further comprising:
sensing a motive force acting on the cement;
sensing the % Travel of the ceramic honeycomb part traversing the cylindrical tube;
adjusting the motive force acting on the cement or adjusting a motive force acting on the part traversing the cylindrical tube based on the sensed motive force and the sensed % Travel.

7. The method of claim 4 wherein the tank pressure set point control parameter is generated also in response to a cylindrical tube exit pressure measurement.

8. The method of claim 4 wherein the first and second parts are skinned in a non-continuous, batch or stepwise manner using an indexed push dispense sequence.

Assignees

• Corning Inc

Inventors

• Bruins Derik Alan
• Chapman Thomas Richard
• Hagg Ralph Henry
• Harihara Parasuram Padmanabhan
• Mauro Yihong

Classifications

• B28B19/0038 Primary

  lining the outer wall of hollow objects, e.g. pipes · CPC title

• B28B17/0081

  Process control · CPC title