Systems and methods are disclosed for detecting defects during manufacturing processes for materials and products. The provided systems may utilize imaging units and computer detection algorithms to determine the presence or absence of defects in manufactured materials or products. Detection of defects in material or products by the disclosed systems may prompt intervention in the manufacturing process to correct the source of the defects.

The invention provides a circular knitting machine for prompting a knitting machine status instantaneously based on a cloth surface status of a fabric, comprising a needle cylinder, a camera module capable of photographing the fabric during doffing, an information processing unit, and an encoder. A camera lens of the camera module does not rotate with the needle cylinder, and a shooting timing of the camera lens is controlled by photographing signals. The information processing unit receives image data generated by the camera module, and compares the images, when there is a difference between the two consecutive image data on a same vertical line, a knitting machine status is prompted. The encoder generates pulse signals when the needle cylinder rotates, the encoder outputs the pulse signals to the camera module or the information processing unit, and the receiver counts the pulse signals to generate the photographing signals.

The invention provides a circular knitting machine for prompting a knitting machine status instantaneously based on a cloth surface status of a fabric, comprising a needle cylinder, a camera module capable of photographing the fabric during doffing, an information processing unit, and an encoder. A camera lens of the camera module does not rotate with the needle cylinder, and a shooting timing of the camera lens is controlled by photographing signals. The information processing unit receives image data generated by the camera module, and compares the images, when there is a difference between the two consecutive image data on a same vertical line, a knitting machine status is prompted. The encoder generates pulse signals when the needle cylinder rotates, the encoder outputs the pulse signals to the camera module or the information processing unit, and the receiver counts the pulse signals to generate the photographing signals.

The invention provides a circular knitting machine for prompting a knitting machine status instantaneously based on a cloth surface status of a fabric, comprising a needle cylinder, a camera module capable of photographing the fabric during doffing, an information processing unit, and an encoder. A camera lens of the camera module does not rotate with the needle cylinder, and a shooting timing of the camera lens is controlled by photographing signals. The information processing unit receives image data generated by the camera module, and compares the images, when there is a difference between the two consecutive image data on a same vertical line, a knitting machine status is prompted. The encoder generates pulse signals when the needle cylinder rotates, the encoder outputs the pulse signals to the camera module or the information processing unit, and the receiver counts the pulse signals to generate the photographing signals.

Machine and method for controlling textile fabric defects during the textile production and method for retrofitting a circular knitting machine having a fixed support structure, a rotational support structure, said system comprising: a digital camera for capturing digital images of the knitted textile fabric, a data processor for processing the captured digital images, a camera support structure for holding the camera, a lighting system to illuminate the knitted textile fabric from the camera side for capture by the digital camera; wherein the camera and back support structures are fixed to the rotational structure.

Machine and method for controlling textile fabric defects during the textile production and method for retrofitting a circular knitting machine having a fixed support structure, a rotational support structure, said system comprising: a digital camera for capturing digital images of the knitted textile fabric, a data processor for processing the captured digital images, a camera support structure for holding the camera, a lighting system to illuminate the knitted textile fabric from the camera side for capture by the digital camera; wherein the camera and back support structures are fixed to the rotational structure.

A circular knitting machine, a method for controlling textile fabric defects, and a method for retrofitting a circular knitting machine are provided. The circular knitting machine includes a fixed support structure, a rotational support structure, and a system for controlling textile fabric defects. The system includes a digital camera for capturing digital images of knitted textile fabric, a data processor for processing the captured digital images, a camera support structure for holding the camera, and a lighting system to illuminate the knitted textile fabric from the camera side for capture by the digital camera. The camera support structure is fixed to the rotational structure.

A circular knitting machine, a method for controlling textile fabric defects, and a method for retrofitting a circular knitting machine are provided. The circular knitting machine includes a fixed support structure, a rotational support structure, and a system for controlling textile fabric defects. The system includes a digital camera for capturing digital images of knitted textile fabric, a data processor for processing the captured digital images, a camera support structure for holding the camera, and a lighting system to illuminate the knitted textile fabric from the camera side for capture by the digital camera. The camera support structure is fixed to the rotational structure.

A fully automatic method for handling knots in flat knitting continuous knitting process includes a knot alarm detecting knots and triggering an alarm. The machine automatically loads and runs a preset knot handling program; the machine pulls out the yarn segment containing the knot from the knitting area and secures the knot; the machine reinserts the subsequent yarn back into the knitting area, returning to the knitting position before the alarm; the machine cuts off the excess yarn segment containing the knot and continues knitting. The process method utilizes a knot alarm set on the flat knitting machine to automatically detect knots on the yarn in advance. Once a knot is detected, the yarn segment containing the knot is pulled out and cut off, thereby removing the knot while hiding the yarn breaks and preventing yarn ladder.

A circular knitting machine with real-time prompt of a knitting machine status. The circular knitting machine includes a base, a cloth rolling machine that rotates relative to the base during knitting operation process, a main camera module fixed on the base, and an auxiliary camera module fixed on the base and disposed close to the main camera module. The main camera module includes a first central axis, and the main camera module takes pictures of a tubular fabric knitted by the circular knitting machine. The auxiliary camera module includes a second central axis intersecting with the first central axis. The auxiliary camera module and the main camera module face a same side of the tubular fabric. A startup timing of the auxiliary camera module only occurs when one of the plurality of connecting rods passes between the main camera module and the tubular fabric.