JPH093728A - Apparatus for detecting impurity fiber in opening machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject apparatus capable of detecting and discharging impure fibers in excellent accuracy by examining fibers on the surface of an opening drum by a color sensor, discharging a small amount of fibers together with the impure fibers when the impure fibers are detected. SOLUTION: Fibers sent through a chute L to a feed roller Z are opened by needles and a saw blade on the surface of a roller W and impure fibers are detected by a color sensor S arranged in one or more lines approximately in parallel with a shaft based on the outer periphery of the roller W. A discharging device F is operated by the detection of the impure fibers to change a flap from a nondefective material A to a staining material B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an impure fiber detection device in an opening machine.

[0002]

2. Description of the Related Art Impurity fibers in cotton yarn caused by a piece of cloth mixed in a cotton bales cause great complaints about spinning. An apparatus for inspecting cotton in flocs or finished cotton yarn has been proposed. "Opticscan" devices are widely used to inspect cotton flocs. In this device, the flocs in the dust removal line are carried on a conveyor belt by an independent machine. Facing the conveyor belt, the color sensor is placed in a narrow gap. These color sensors detect the difference in color of the impurities and actuate the ejector. The impure fiber in the finished yarn is detected in the bobbin winding process. At this time, the black-and-white sensor determines the yarn and cuts out the dark yarn portion in some cases. These two methods have high investment costs,
Not easy to integrate into existing equipment. It is an object of the present invention to provide an inexpensive and easy to install device for removing impure fibers in spinning.

[0003]

In order to detect the impure fiber, it is necessary to open the cotton bales so that the impure fiber pieces can be seen to form flocs. It should also provide a large surface area that can be observed by the color sensor. In accordance with the present invention, the detection of impure fibers is accomplished by the fact that cotton and impure fibers are carried around garnet wire, needles or at least one opening roller with "protrusions" so that the color sensor is substantially axially parallel to the roller circumference. It is solved by arranging more than one row in the. The distance between the sensor lens and the roller circumference should not be too large. This is because otherwise cotton will not be able to wipe the dust off the lens. When placed near the drum, the distance to the outer peripheral tip should not exceed 20 mm. The distance to the drum can be increased only if the sensor array is arranged in the deflector. This is because the flocs fly by centrifugal force towards the deflector and slide along the deflector into the suction duct "C".

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION A configuration mode of the present invention will be described with reference to FIG. The fibers reach the feed roller "Z" through the chute "L". Feed roller "Z" conveys fibers to the surface of roller "W". Roller "W" is, for example, 350 mm in diameter and can rotate at 500 rpm. The fiber mass is opened by the needles or saw teeth of the opening roller, and the flocs and impure fibers (fiber pieces) are carried along the outer circumference of the drum. It is also possible to attach a plurality of opening rollers one after another. Of these, one of the first rollers is most suitable for detection because of its low peripheral speed. The surface of the roller is preferably bright, for example aluminium.

The fibers are pulled by a needle along a separating knife "K" or dish plate "M". It is also possible to incorporate the fiber sensor "S" in the dish plate. The cotton always cleans the lens as it passes. Preferably, the sensor can be placed on an air guide plate that guides the air that carries the fibers from the roller surface.
Such a position allows for easy assembly and easy access. The air that rotates with the roller stays at the floating edge “N” and floats the remaining fibers from the needle. The fibers and impure fibers reach the suction tube "C". A discharge device “F” is attached to the suction pipe “C”. When the sensor detects the impure fiber based on the difference in color and brightness from the cotton, the ejection device is activated accordingly and ejects a small amount of the cotton together with the impure fiber. This evacuation is accomplished by switching the flap from "A" good material to "B" contaminated material in a known manner.

By locating the sensor so that the surface of the drum can be seen, a large surface area for thorough inspection of the cotton is possible. Since the drum conveys the fibers mechanically, there is no risk of jamming as in an inspection system operating in an air stream. The proposed device does not require a new machine and can be easily integrated into existing dedusting lines.

[Brief description of drawings]

FIG. 1 is a schematic diagram of an impure fiber detection device in a fiber opening machine of the present invention.

[Explanation of symbols]

 A ... Good material B ... Contamination material C ... Suction tube F ... Ejection device K ... Separation knife L ... Chute M ... Dish plate N ... Floating edge S ... Fiber sensor W ... Roller Z ... Feed roller

Claims (7)

[Claims] 1. A device for detecting fibers, foils or fabrics of different colors in a fiber opening line, wherein a color sensor facing the surface of a fiber opening roller is attached over the entire width of the roller, and these sensors and an electronic analyzer are opened. When a color that is clearly different from the standard fiber is detected in the material, all or part of the fiber flow is discharged from the standard opening line. 2. The device according to claim 1, wherein an individual point sensor, a line sensor measuring point or a matrix sensor measuring point is used as the color sensor. 3. The device according to claim 1, wherein the signals of the color measuring points are adjusted by a common computer. 4. The surface of the opening roller has a metallic luster surface or a white surface, according to any one of claims 1 to 3.
The device according to item. 5. Device according to claim 1, wherein the color sensors are combined in one module and all color sensors can be removed. 6. The device according to claim 1, wherein the illumination light and the light rays of the color sensor reflected from the fibers pass through a common glass plate. 7. The device according to claim 1, wherein the sensor is attached to a deflector that deflects the fibers from the opening roller.