JPH05330740A - Automatic winder - Google Patents

Abstract

PURPOSE:To remove a different count of yarn completely if the different count of yarn is mixed in while a prescribed count of yarn is being wound. CONSTITUTION:An automatic winder, which brings a package 6 into contact with a rotating drum 12 to rotate it and winds yarn Y around the package 6, detects the count of the yarn Y wound around the package 6, and rotates the traverse drum 12 reversely and makes a suction means 3 suck the different count of yarn when it detects different count of yarn. It is thus possible to remove the mixed different count of yarn completely by cutting the upper part of the yarn sucked by the suction means 3 in this condition.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to an automatic winder.

[0002]

2. Description of the Related Art In automatic winders having a plurality of winding units arranged in parallel, a type having an automatic yarn splicing device in each winding unit is prevalent.

In this type of automatic winder, the yarn drawn out from the bobbin supplied to each unit at high speed is wound on a rotating package which contacts the rotating drum. If the yarn pulled out from the bobbin has a defect such as a slab, it is detected by a yarn clearer near the yarn joining device, and the yarn is forcibly cut by a cutter built in the yarn clearer when the drum stops. The defective portion is removed by splicing, and then the upper yarn on the package side and the lower yarn on the yarn supplying bobbin are spliced to resume winding.

[0004]

However, in the above-described conventional automatic winder, when a bobbin of a different count is mistakenly taken into the winding unit and winding is started, the yarn to be wound becomes a different count from the middle. However, even if it is detected by the clearer, it is not possible to remove all the different count parts. This is because the package is rotating at a high speed by the drum, so when the clearer detects the different yarn count and stops the drum, several yarns of the different yarn have already been wound into the package. is there.

The present invention has been made in view of the above circumstances, and provides an automatic winder capable of removing all the different count portions when the different count yarn is mixed during winding of a predetermined count yarn. With the goal.

[0006]

SUMMARY OF THE INVENTION To achieve the above object, the present invention provides an automatic winder for winding a yarn on a package while abutting the package on a rotating drum and rotating the package. Detects the yarn count of the wound thread,
When the different yarn count is detected, the rotary drum is rotated in the reverse direction so that the different yarn portion is sucked into the suction means.

The reverse rotation amount of the drum can be calculated back from the yarn traveling amount detected by a clearer or the like during winding. Further, as the suction means, for example, a yarn trap provided for holding a yarn end at the time of yarn splicing can be used.

[0008]

According to the above technical means, by rotating the rotary drum in the reverse direction, it is possible to pull out a yarn of a different count from the package and suck it all into the suction means such as a yarn trap. By operating the cutter of the yarn clearer in this state, it is possible to remove all the mixed yarns of different counts.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a winding unit. A large number of the winding units 1 are arranged between the bobbin supplying conveyor belt 16 and the empty bobbin conveying belt 17 along the conveying direction to form one automatic unit. A winder is constructed. In each winding unit 1, a yarn Y drawn from a bobbin 5 on a tray 7 which is a bobbin carrying medium passes through a balloon breaker 8, a yarn guide 9, a tensor 10 and a yarn clearer 11, and traverses a rotary drum. It is wound around a rotating package 6 by a drum 12. When the yarn clearer 11 detects a yarn defect in the yarn at the time of winding the yarn, the yarn clearer 1
The cutter built in 1 operates to forcibly cut the traveling yarn Y. At this time, the rotation of the traverse drum 12 is stopped and the winding is stopped, while the suction mouth 13 is stopped.
Is activated to guide the upper yarn on the package 6 side to the yarn joining device 14, and the relay pipe 15 guides the lower yarn on the bobbin 5 side to the yarn joining device 14
Lead to. Then, the yarn splicing device 14 splices the yarn, and if the splicing is successful, the winding is started again. At the bottom of the yarn clearer 11, a yarn is attached at the time of the above-mentioned yarn splicing.
A yarn trap 3 for holding the lower thread end cut by the cutter of the clearer 11 by suction is provided. And
When one bobbin 5 becomes empty, a knotting command is issued, the empty bobbin is discharged to the empty bobbin transport belt 17 by the operation of the bobbin change mechanism 20, and the bobbin supply conveyor belt 16 transfers the next bobbin 5 to the unit 1. Is taken in and positioned at the winding position 21, the yarn is pulled out from the bobbin 5 and spliced, and then the winding is resumed.

The above is the basic operation of the automatic winder during winding and yarn splicing.

The winding unit 1 has a function of stopping the winding and automatically removing the different-numbered part when the bobbin of the different-numbered yarn is mistakenly taken in and the winding is started. Therefore, the yarn clearer 11 outputs the yarn detection signal a according to the property of the passing yarn,
The drum sensor 22 provided on the traverse drum 12 outputs a drum rotation detection signal b having a pulse interval according to the drum rotation amount. These detection signals a and b are guided to the central controller 23 provided in the automatic winder and processed. The central controller 23 controls the operations of the yarn clearer 11, the traverse drum 12, the yarn joining device 14, the bobbin changing mechanism 20, etc. based on the signal processing result. The dashed-dotted line in FIG. 1 shows a signal line for controlling these operations.

The operation for removing the different-numbered portion will be described below with reference to the flow chart of FIG.

When winding is started with the bobbin of a different count being taken in, the yarn clearer 11 starts to continuously send a yarn defect detection signal because the running yarn changes its properties from the middle. If this state continues for a predetermined time (for example, 1 second), the central control device 23 determines that the mixed yarn of different yarn count has occurred (step 1), immediately stops the rotation of the traverse drum 12 (step 4), and the yarn clearer 11 After prohibiting the cutting operation (step 5), the traverse drum 12 is started to rotate in the opposite direction to the winding side (step 6). The reverse rotation of the traverse drum 12 causes the package 6 to rotate in the reverse direction, and the yarn of the different number wound on the package 6 is fed out, so that the yarn between the traverse drum 12 and the bobbin 5 is loosened. .. At this time, since the yarn trap 3 is driven by suction, the loosened portion of the yarn is naturally sucked by the yarn trap 3 as shown in FIG. 3 (step 7). Based on the yarn traveling signal of the yarn clearer 11, the central control unit 23 detects the length of the different count yarn that has passed through the yarn clearer 11 until the drum stops (step 4) (step 2), and then detects the length. -Stores the data in its own memory (step 3),
The reverse rotation amount of the traverse drum 12 is monitored, and the traverse drum 12 is reversely rotated (step 8) until the yarn of the stored length is paid out from the package 6, and the traverse drum 12 is stopped (step 8). 9). And Yarn Clearer 1
After the prohibition of 1 is released (step 10), the cutter of the yarn clearer 11 is operated to cut the yarn (step 11). Since all the yarns of different count wound on the package 6 have been fed out and sucked into the yarn trap 3, the mixed yarns of different count are all cut by thread cutting (step 11). To be removed. Next, the central control unit 23 determines whether or not the different number bobbin is collected on the spot by the operator (YES) or not (NO) (step 12). This judgment is made according to the conditions preset by the operator. When the operator waits for collection, the yellow button provided on the front surface of the unit 1 is projected to indicate that the yarn splicing is impossible (step 13), and the operator waits for collection. If the forced elimination is executed without doing so, a knotting command is issued (step 14), and the bobbin change mechanism 20
To move the different bobbin to the empty bobbin transport belt 17
(Step 15). Belt 1 for transporting empty bobbins
The different number bobbins discharged to 7 are sent to a bobbin collecting mechanism (not shown) and collected (steps 16 and 17).

[0015]

In summary, according to the automatic winder of the present invention, when the bobbin of a different count is mistakenly taken in and winding is started, the rotary drum is rotated in the reverse direction so that the yarn of a different count is taken out of the package. Since all the yarns are pulled out and sucked by the suction means, if the yarn cutting process is performed by a yarn clearer or the like in this state, all the mixed yarns of different counts can be removed.

[Brief description of drawings]

FIG. 1 is a schematic view of a winding unit showing an embodiment of the present invention.

FIG. 2 is a flow chart showing an embodiment of the present invention.

FIG. 3 is a conceptual diagram showing a manner in which different yarn counts are sucked into the suction means by the method of the present invention.

[Explanation of symbols]

 3 yarn trap (suction means) 6 package 12 traverse drum Y yarn

Claims (1)

[Claims] 1. An automatic winder that winds a yarn around a package while abutting the package on a rotating drum to rotate the package, detects the yarn number of the yarn wound on the package, and detects the yarn of a different number. When it is detected, the rotating drum is rotated in the reverse direction so that the different-numbered portion is sucked into the suction means, which is an automatic winder.