Control system for tire building

Claim 2

A control system (10) for a tire building machine including a cylindrical drum (11) and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means (15) providing coded commands relating to a specific step in the tire building sequence, matrix decoder means (16) receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means (20) controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means (30) capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, said drum control means including integrating amplifier means (34) having a charging capacitor, position potentiometer means (31) charging said capacitor with a charge representing the desired amount of rotation of the drum, tachometer generator means (35) providing a signal which is the analog of drum rotation, said signal from said tachometer generator means discharging said capacitor, and motor control means (40) rotating the drum as long as a charge appears in said capacitor, whereby said drum is rotated according to the setting of said position potentiometer means, and work device control means capable of receiving an output of said matrix decoder means and operating a work device accordingly.

Claim 3

A control system according to claim 1 including means (32) for determining a reference point on the drum so that said tachometer generator will not begin to discharge said capacitor until said reference point is reached.

Claim 4

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including a position potentiometer means (62) providing a signal to a position servo means positioning the stitcher with respect to the drum, said position servo means including error amplifier means receiving the signal from said position potentiometer means (62) and feedback potentiometer means monitoring the position of the stitcher and providing a feedback signal to said error amplifier means, and motor control means (40) receiving the output of said error amplifier and positioning the stitcher accordingly, the output of said error amplifier equaling zero when the stitcher is properly located according to the signal from said position potentiometer means.

Claim 5

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including a position potentiometer means (62) providing a signal to a position servo means positioning the stitcher with respect to the drum, said position servo means including error amplifier means receiving the signal from said position potentiometer means (62) and feedback potentiometer means monitoring the position of the stitcher and providing a feedback signal to said error amplifier means, and motor control means (40) receiving the output of said error amplifier and positioning the stitcher accordingly, the output of said error amplifier equaling zero when the stitcher is properly located according to the signal from said position potentiometer means.

Claim 6

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including operational amplifier means, tachometer generator means providing a signal which is the analog of drum speed to said amplifier means, and motor control means moving the stitcher according to the output of said amplifier means.

Claim 7

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including operational amplifier means, tachometer generator means providing a signal which is the analog of drum speed to said amplifier means, and motor control means moving the stitcher according to the output of said amplifier means.

Claim 8

A control system according to claim 4 wherein lap ratio potentiometer means adjusts the movement of the stitcher with respect to the speed of the drum.

Claim 9

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including pressure error amplifier means receiving an input signal from pressure position potentiometer means, the setting of said pressure position potentiometer means representing the position of the stitcher at which it is desired to change the pressure applied to the drum by the stitcher, feedback means monitoring the position of the stitcher and providing a feedback signal to said pressure error amplifier, and pressure switch means receiving the signal from said pressure error amplifier and changing the pressure of the stitcher when the desired position of the stitcher is reached.

Claim 10

A control system for a tire building machine including a cylindrical drum and work devices wherein a first ply of fabric is wrapped around the rotating drum and thereafter the work devices associated with the drum sequentially perform operations upon the first ply and other tire components comprising, input program means providing coded commands relating to a specific step in the tire building sequence, matrix decoder means receiving and recognizing said coded commands and providing outputs to activate circuitry to accomplish an operation in the tire building sequence, timer means controlling an output of said matrix decoder means so that said output is provided only at select times, drum control means capable of receiving an output of said matrix decoder means and operating the tire building drum accordingly, and stitcher control means capable of receiving an output of said matrix decoder means and operating a stitcher accordingly, said stitcher control means including pressure error amplifier means receiving an input signal from pressure position potentiometer means, the setting of said pressure position potentiometer means representing the position of the stitcher at which it is desired to change the pressure applied to the drum by the stitcher, feedback means monitoring the position of the stitcher and providing a feedback signal to said pressure error amplifier, and pressure switch means receiving the signal from said pressure error amplifier and changing the pressure of the stitcher when the desired position of the stitcher is reached.