Patent ID: 9551101
Date: 2017-01-24
CPC Classifications: D06B

Claim:
1. A circulation protection device of a conveyor-driven fabric dyeing machine, comprising a machine body extending between a front end and a rear end, a dyeing tube arranged above the machine body and substantially parallel with the main body and a conveyor arranged in the machine body and comprising a movable member extending and movable between the front end and the rear end of the machine body, a nozzle and a fabric roller arranged above the front end of the machine body, and a control box that is operable in combination with a computer program to control an operation of the fabric dyeing machine, wherein a fabric circulation detection idler in the form of a roller that is arranged adjacent to the fabric roller for guiding fabric toward the fabric roller and is structured to detect a moving speed of the fabric moving towards the fabric roller and a fabric movement sensor, which is arranged in the front end of the machine body and adjacent to the movable member of the conveyor to detect a moving speed of the fabric leaving the conveyor, where the fabric circulation detection idler and the fabric movement sensor are electrically connected to the control box and the conveyor, wherein the control is performed by the control box in such a way that when the fabric circulation detection idler detects a situation that the fabric is not in movement according to the moving speed detected by the fabric circulation detection idler, the conveyor is shut down; and when the fabric movement sensor detects the fabric is moving excessively fast or slow or gets jamming and stopped according to the moving speed detected by the fabric movement sensor, the conveyor is controlled to automatically speed up or slot down or stops operation and wherein detection of a speed of the fabric circulation detection idler is made for correcting synchronization of speeds of the fabric and the conveyor.