JP2003020548A - Yarn feed stopper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a yarn feed stopper for saving the labor of threading a plurality of passages with a yarn unreeled from a new package exchanged, prior to exhausting the yarn of one package, and for improving productivity by cutting the time of halting a loom. SOLUTION: This yarn feed stopper is characterized by including a detective means 15 for detecting the color of the surface of a package 5 of yarn 4 wound on a core 3, a memory means 16 for memorizing the color of the surface of the core 3 in the detective means 15, a comparing means 17 for comparing the color of the above package with the color memorized by the means 16, and a control panel 18 enabling stop signal to be outputted on receiving a conformity signal from the comparing means 17. Thus, this yarn feed stopper can halt the feeder device or the loom at a point when the color of the surface of the core 3 is exposed, that is, yarn remains on the core 3.

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a yarn feed stopping device suitable for use in a feeder device for supplying weft to a shuttleless loom. [0002] The above feeder device is a shuttleless loom (water jet loom, air jet loom, sluser,
Each time the beating of a rapier loom or the like is performed, a weft of a required length is fed out of the package, and is supplied through a storage unit for pooling in a U-shape without twisting the weft. Between the feeder device and the shuttleless loom, there is provided a sensor for detecting when the yarn is cut or when the yarn of the package is used up, and stopping the feeder device and the loom. [0003] However, the feeder device has a plurality of passages for guiding the yarn, since there is a storage portion for pooling the yarn in a U shape between the feeder device and the shuttleless loom. ing. Therefore, if the yarn of one package is used up and then replaced with a new package, the yarn drawn from the package must be passed through a plurality of passages, which not only requires a lot of trouble, but also a loom during that time. There is a problem that productivity is reduced due to forced suspension of work. SUMMARY OF THE INVENTION The present invention is directed to overcoming the above-described problems and aims at providing a plurality of passages by stopping a yarn supply (and a loom) before one package yarn is exhausted. Another object of the present invention is to provide a yarn feeding stop device which can reduce the time and effort required to re-thread the yarn and reduce the downtime of the loom. [0005] In order to achieve the above object, the present invention provides a detecting means for detecting the color of the surface of a package of a yarn wound on a core, and the detecting means includes the core. Storage means for storing the color of the surface of the package, comparison means for comparing the color stored by the storage means with the color of the package surface, and a control unit capable of outputting a stop signal when a coincidence signal is received from the comparison means The feeder device and the loom can be stopped when the color of the surface of the core is exposed, that is, when the yarn remains on the core. Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a state of use of the apparatus of the present invention, FIG. 2 is a block diagram of the apparatus of the present invention, and FIG. . In FIG. 1, reference numeral 1 denotes a shuttleless loom such as a water jet loom, an air jet loom, a sluser or a rapier loom, and 2 denotes a feeder device. The feeder device 2 is configured to feed out a portion 6 of the package 5 of the yarn 4 wound around the core 3 and to pool the yarn drawn out from the payout portion 6 into a U-shape by a necessary length for each beating of the shuttleless loom 1. And a unit 7. The storage section 7 transfers the yarn 4 fed from the feeding section 6 of the package 5 between an inlet roller 9 installed on the upper left side of the screen-like housing 8 and an outlet tensor 10 installed on the upper right side. It can be pooled in a U shape. The U end of the thread 4 is detected by the sensor 11,
The storage amount is adapted to correspond to one weft insertion amount of the shuttleless loom 1. That is, when the sensor 11 cannot detect the U end of the yarn 4, the sensor 11 outputs a signal of the speed UP to the motor 13 connected to the suspension means 12 that suspends the winding core 3 of the feeding section 6,
When the U end is detected, a signal of the speed DOWN is output to the motor 13 so that the stored amount and the weft insertion amount are always matched. A detection means 15 for detecting the color of the surface of the package 5 is provided on a gantry 14 provided with a suspension means (rotary shaft) 12 for the core 3 and a motor 13. The detecting means 15 includes a sensor section 15a and an amplifier section 15b capable of concentrating three LEDs of red, blue and green in a three-dimensional manner, and stores the color of the surface of the core 3 in the amplifier section 15b. A storage unit 16, a comparison unit 17, and a control unit 18 are built in. The length of the light that can be collected from the sensor section 15a can be detected over a long distance of 70 ± 20 mm. Accordingly, even if the package 5 flaps, not only can it sufficiently cope with it, but also the condensing spot diameter can be set as extremely small as φ1. The storage means 16 stores the sensor unit 15
a is shifted in the axial direction of the package 5 (actually, the package itself is shifted in the axial direction on the suspension means (rotary shaft) 12) as shown in FIG. Pressing (one touch) the set button 15b 'provided on the upper surface of the amplifier section 15b activates (stores or registers). The color of the surface of the core 3 stored in the storage means 16 may be a color line (not shown) drawn on the surface of the core 3 along the axial direction. That is, when the color of the yarn 4 constituting the package 5 happens to be the same as the color of the surface of the core 3, a line of a color different from the color of the yarn 4 is drawn on the surface of the core 3 later. Is sometimes used as the color of the surface of the winding core 3. After storing the color of the surface of the core 3 in the storage means 16 and returning the sensor section 15b to the original position to detect the color of the surface of the package 5, the color stored in the storage means 16 is stored. The comparison means 17 compares whether or not the color and the color of the package surface match. The comparison means 17 can display the degree of coincidence (sensitivity) between the color stored (registered) in the storage means 16 and the color on the surface of the package as a numerical value (not shown) of 0 to 999. That is, as shown in FIG. 3 (a), the detecting means 15 gradually decreases the packages 5 which are being detected as the weaving of the loom progresses, and as shown in FIG. 3 (b), the color of the surface of the core 3 is exposed. Then, it is determined that the color on the surface of the package matches the color stored in the storage unit 16, and a match signal is output to the control unit 18. When receiving the coincidence signal output from the comparing means 17, the control section 18 outputs a stop signal to the motor 13 of the feeding section 6 and a drive source (not shown) of the shuttleless loom 1. As a result, the feeder device and the shuttleless loom are stopped. At the time of this stop, the yarn 4 still remains on the winding core 3. Next, the operation of the apparatus of the present invention described above will be described. First, the color of the surface of the core 3 is stored (registered) in the storage unit 16 in the detection unit 15 in a predetermined manner. Next, the color of the surface of the package 5 is detected by the detection means 15, and the comparison means 17 monitors whether the color stored in the storage means 16 matches the color of the surface of the package. However, the operation of the shuttleless loom 1 causes the package 5 of the feeder device 2 to gradually decrease from the state shown in FIG. 3A as the weaving of the loom progresses, and as shown in FIG. When the color of the surface of 3 is exposed, a coincidence signal is output from the comparison means 17 to the control unit 18, and the control unit 18 that has received the coincidence signal stops the feeder device 2 and the shuttleless loom 1. At the time of this stop, as shown in FIG.
Since the yarn 4 still remains in the feeder, connecting the yarn end to the tip of a new package reduces the trouble of re-threading the yarn through a plurality of paths (for example, the inlet roller 9 and the outlet tensor 10) of the feeder device. Thus, the downtime of the loom can be reduced. Although the present invention has been described with reference to an example in which the present invention is applied to a feeder device for supplying wefts to a shuttleless loom, the present invention can also be applied to a covering machine, a winder, and various other textile machines using a yarn package. Of course. As described above, the present invention provides a detecting means for detecting the color of the surface of a package of a yarn wound on a core, and a memory for storing the color of the surface of the core in the detecting means. Means, comparison means for comparing the color stored in the storage means with the color of the package surface, and a control unit capable of outputting a stop signal when receiving a coincidence signal from the comparison means. Therefore, when the color of the surface of the winding core is exposed even when the yarn remains on the winding core, a matching signal is output from the comparing means at that time, and the control unit that has received the matching signal stops the feeder device and the loom. Let it. Therefore, by connecting the yarn end of the winding core where the yarn still remains and the yarn end of the newly replaced package, the trouble of re-threading the yarn through a plurality of passages (for example, an inlet roller or an outlet tensor) of the feeder device can be saved. This is an excellent effect of reducing the downtime of the loom.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a use state of the present application device. FIG. 2 is a block diagram of the device of the present application. FIG. 3 is a perspective view showing an operation of a detecting means for detecting a color of a surface of a package of a yarn wound around a core. DESCRIPTION OF THE SYMBOLS 1 Shuttleless loom 2 Feeder device 3 Core 4 Thread 5 Package 6 Feeding-out section 7 Storage section 8 Housing 9 Inlet roller 10 Outlet tensor 11 Thread U-end sensor 12 Suspension means 13 Motor 14 Mount 15 Detecting means 15a Sensor unit 15b Amplifier unit 16 Storage unit 17 Comparison unit 18 Control unit

Claims (1)

Claims: 1. A detecting means for detecting a color of a surface of a package of a yarn wound on a core, a storing means for storing the color of the surface of the core in the detecting means, and the storage. A yarn feeding stopping device, comprising: comparing means for comparing the color stored in the means with the color of the surface of the package; and a control unit capable of outputting a stop signal when receiving a coincidence signal from the comparing means. .