US 12,162,716 B2 · Dynamic tension control system for narrow fabric

Abstract

A dynamic tension control system is described herein for driving linear material off a roll in a controlled manner. The dynamic tension control system may include a frame, a shaft for holding a roll of linear material, a motor for driving the shaft, and a dancer tensioning control system for controlling the motor. The dancer tensioning control system may include an actuator assembly through which the linear material passes and a proximity sensor for detecting whether the actuator assembly is proximate to the proximity sensor. When the linear material is pulled from the roll, tension is created in the linear material, which lifts the actuator assembly away from the proximity sensor. The dynamic tension control system may be configured to command, based on detecting that the actuator assembly is not proximate to the proximity sensor, the motor to drive the shaft to unwind linear material from the roll.

Claims20

Dependent claims

A dynamic tension control system, the system comprising:

a shaft for holding a roll of material;
a motor for driving the shaft;
and
a dancer tensioning control system comprising:
an actuator assembly for receiving the material;
and
a sensor configured to:
detect whether the actuator assembly is proximate the sensor;
transmit, based on detecting that the actuator assembly is not proximate the sensor, a signal;
and
stop transmitting, based on detecting that the actuator assembly is proximate the sensor, the signal;
wherein the dynamic tension control system is configured to:
command, based on receiving the signal from the sensor, the motor to accelerate;
and
command, based on stopping receiving the signal from the sensor, the motor to decelerate.

12 more elements

A dynamic tension control system, the system comprising:

a shaft for holding a roll of linear material;
a motor for driving the shaft;
and
a dancer tensioning control system comprising:
a top block assembly;
a bottom block assembly below the top block assembly;
guide rods extending between the bottom block assembly and the top block assembly;
an actuator assembly movably positioned on the guide rods between the bottom block assembly and the top block assembly, wherein the actuator assembly comprises an eyelet for receiving the linear material;
and
a proximity sensor positioned on the bottom block assembly, wherein the proximity sensor is configured to:
detect whether the actuator assembly is proximate the proximity sensor;
transmit, based on detecting that the actuator assembly is not proximate the proximity sensor, a signal;
and
stop transmitting, based on detecting that the actuator assembly is proximate the proximity sensor, the signal;
wherein the dynamic tension control system is configured to:
command, based on receiving the signal from the proximity sensor, the motor to accelerate;
and
command, based on stopping receiving the signal from the proximity sensor, the motor to decelerate.

15 more elements

Dependencies are inferred from the claim text.

Dynamic tension control system for narrow fabric

Life of this patent

Dynamic tension control system for narrow fabric

Life of this patent

Abstract

Claims20