JP3414037B2 - Automatic winder and method for removing defective yarn in automatic winder - Google Patents

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] For example, a corn or cheese-like roll is formed by splicing a large number of yarns such as a bobbin produced by a ring spinning machine and removing defective parts such as slabs and neps. It relates to an automatic winder that is wound into a package.

[0002]

2. Description of the Related Art In an automatic winder, a large number of winding units are arranged in parallel. Each winding unit winds the yarn of the yarn supplying bobbin supplied from the spinning machine while replenishing the yarn so that the yarn has a predetermined length. When the yarn supplying bobbin becomes empty, it is automatically replaced with a new yarn supplying bobbin, the yarn supplied from this new yarn supplying bobbin is spliced to the yarn already wound in the winding package, and the winding is continued. It is like this. Also, if the thread breaks during winding, or if a thread defect is detected and the thread is cut,
The broken yarn or the following non-defective yarn is connected to the yarn on the winding package side to continue winding.

Such yarn splicing is performed by using a yarn splicing device, and the first suction means (relay pipe) for sucking the yarn end on the yarn supplying bobbin side to guide it to the yarn splicing device and the winding package side. Second suction means (suction mouth) for sucking the yarn end and guiding it to the yarn joining device is provided.

The operations such as the suction of the first suction means (relay pipe) and the second suction means (suction mouth) and the guide by the reciprocating turning motion are performed by rotating the cam of a predetermined shape once. The drive of the cam shaft for rotating the cam once is not provided for each weight, but a drive shaft common to each winding unit is provided, and on / off connection to this drive shaft is performed by a clutch to drive the cam shaft at a desired time. It was

[0005]

However, in the drive mechanism that rotates the cam of each winding unit by turning on / off the connection between the drive shaft common to the winding unit and the cam shaft of each winding unit. Since the rotation of the cam of the unit is one uniform rotation, the first suction means (relay pipe) can perform only a predetermined fixed operation. Therefore, the operation of the first suction means (relay pipe) cannot be changed depending on the situation, and for example, the suction amount of the yarn end from the yarn feeding is increased or the yarn splicing time in the yarn splicing device is lengthened. There was a problem that I could not deal with that.

The present invention has been made in view of the above problems of the prior art, and its object is to absorb the yarn from the yarn supplying device and guide it to the yarn splicing device depending on the situation. It is intended to provide an automatic winder capable of changing the operation of the suction means. Further, there is also provided a defective yarn removing method in an automatic winder, which effectively removes defective yarn by the operation of the suction means according to the situation.

[0007]

An automatic winder of the present invention which achieves the above object is an automatic winder equipped with suction means for sucking a yarn wound around a yarn supplying bobbin and guiding it to a yarn joining device. Changing means for changing the operation of the sucking means is provided , and the changing means, when the number of thread defects per predetermined thread length exceeds a predetermined number, causes the suction means to move at a yarn end catching position of the yarn supplying device to a predetermined yarn. number of yarn defect per unit length is as a means for controlling so as to stop longer than when less than a predetermined number. Further, it is preferable that a winding unit including the yarn joining device and the suction means is provided, and a drive device for the suction means is provided for each winding unit.

In such a defective yarn removing method in the automatic winder, when the number of yarn defects per predetermined yarn length exceeds a predetermined number, the suction means is used at the yarn end catching position of the yarn supplying device to detect the yarn defects per predetermined yarn length. When the number is less than a predetermined number, the operation is stopped for a set time, and a part or all of the yarn wound around the yarn supplying bobbin is removed by suction within the set time.

[0009]

In the automatic winder, if the changing means for changing the operation of the suction means is provided according to the situation, the suction means can be stopped at a predetermined position for a predetermined time. When the number of yarn defects per predetermined yarn length exceeds a predetermined number, the changing unit causes the suction unit to catch the yarn end at the yarn end capturing position, and when the number of yarn defects per predetermined yarn length is less than the predetermined number. Since it is a means for controlling so as to stop for a longer time, a yarn portion having many yarn defects is removed. Further, if a drive device for the suction means is provided for each winding unit, the operation of the suction means independent for each weight can be obtained.

In the defective yarn removing method in the automatic winder, if the portion having many yarn defects is removed by the suction means, the removal is surely performed.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of essential parts of an automatic winder according to the present invention.

The automatic winder is constructed by arranging a large number of winding units U constituting each weight. Each winding unit U
Has a control box 1, and each control box 1 is connected to a main control box 2 of the automatic winder. And control box 1
Drive controllers such as a drum motor 3 for rotating the traverse drum and a cam motor 4 for rotating the cam are connected to the slab catcher 5 for detecting a yarn defect and the presence / absence of a yarn, and a yarn splicer. A detection unit such as an event memory 6 for counting the number of mistakes or detecting the number of times the yarn is cut by detecting a yarn defect is connected.

The event memory 6 stores the thread cutting time at the same time as the number of times the thread is cut, and the information about the thread cutting is stored when the set time of the timer 18 attached to the control box 1 elapses. ,
It is supposed to be cleared sequentially. Therefore, when the set time elapses from the occurrence of the thread cutting, the count is removed. Then, when the number of times of thread cutting reaches the number of times set in advance in the control box 1 within the set time of the timer 18, the defective thread removal program of the control box 1 is executed, and the drum motor 3, the cam motor, etc. are executed according to this program. Will be controlled.

That is, when the number of yarn defect detections per predetermined time exceeds the set number, the operation according to the defective yarn removing program is executed instead of the normal yarn splicing operation. It should be noted that the determination may be made based on the number of yarn defect detections per predetermined yarn length instead of the number of yarn defect detections per predetermined time. The yarn length can be easily obtained, for example, by detecting the number of rotations of the drum. In the defective yarn removing program described above, when the number of yarn defects per predetermined yarn length exceeds a predetermined number, the first suction means, which will be described later, is used at the yarn end catching position of the yarn supply, and the number of yarn defects per predetermined yarn length is predetermined. When the number of yarns is less than a certain number, the yarn is stopped for a set period of time, and the yarn wound on the yarn supplying bobbin is partially or wholly removed by suction within the set period.

The cam motor 4 serves as a drive source for the operation of each device that performs the yarn splicing operation, and is the first through the gear reduction mechanism.
The cam shaft 11, the second cam shaft 12, and the third cam shaft 13 are rotated once. In addition to the cam 15 that operates the first suction means 14 (relay pipe) for sucking the yarn end from the yarn feeding and guiding it to the yarn splicing device, the first cam shaft 11 includes the yarn end from the winding package. To the suction yarn splicing device, a second suction means (not shown) for reversing the traverse drum, a reverse roll (not shown) for reversing the traverse drum, a tenser opener (not shown) for opening the tensor, etc. The cams necessary for the operation of each device for performing the above are inserted. The second cam shaft 12 is fitted with a cam required to operate each device for discharging the empty bobbin and changing the bobbin for introducing a new yarn feeding bobbin. The third cam shaft 13 is fitted with a cam required to operate each device that constitutes the yarn joining device.

The first suction means 14 (relay pipe)
A magnet 16 is attached to a drive mechanism such as a cam 15 for operating the cam 15 or an intermediate gear leading to the cam 15, and a magnetic sensor 17 for detecting the magnet 16 is provided.
With such a configuration, the magnetic sensor 17 detects the magnet 16 attached to the cam 15 at a predetermined rotation angle, and the cam motor 4 with a brake is driven by the predetermined rotation of the cam 15.
It becomes possible to stop the operation. Also, the cam motor 4
A timer 18 for deciding the stop time of is adjustable is connected to the control box 1.

As described above, the winding unit U for each weight
The cam 15 is provided with a cam motor 4 as a driving device and causes the first suction means 14 (relay pipe) or the like to perform a predetermined operation.
The magnet 16 is attached to the
By the configuration (stopping means) of providing the timer 18,
The first suction means 14 (relay pipe) or the like can be stopped at a predetermined position for a predetermined time depending on the situation.

The first suction means 14 comprises a suction pipe 14a and a clamp member 14b for clamping the yarn end sucked into the suction port of the suction pipe 14a, and is in the standby position shown in FIG. 4 (see FIG. 2). The base end of the suction tube 14a is supported by the machine frame 21 so as to be capable of reciprocating and rotating between 14 (A) (corresponding to the position shown) and the yarn end capturing position 14 (B). Clamp release members 14c and 14d are provided at the standby position 14 (A) and the yarn end catching position 14 (B), respectively, and when the clamp member 14b reaches both positions 14 (A) and 14 (B), the clamp is released. The yarn end clamp of the clamp member 14b is released at both positions 14 (A), 14 (B) by contacting the release members 14c, 14d. 2 cam 1 above
When 5 rotates once, the first suction means 14 moves to the standby position 14
The cam 15 and the first suction means 14 are connected via a link mechanism (not shown) so as to move from (A) to the yarn end catching position 14 (B) and return to the standby position 14 (A) again. There is.

Next, the first suction means 14 (relay pipe)
2 to 4 show a specific configuration of the winding unit capable of stopping the yarn at the lower end position (the yarn end catching position) for sucking the yarn from the yarn supplying device and stopping it for a time for sucking and removing the defective yarn. explain.

In FIG. 2, the winding unit U is fixed in position by the support tube 22 and the duct 23, and the yarn Y drawn from the yarn supplying bobbin 24 that is positioned and supplied to a predetermined position of the winding unit U is unwound. The traverse drum 3 is passed through the auxiliary device 26, the tenser 27 for applying a predetermined tension, the slab catcher 5 for detecting the presence / absence of a yarn and the yarn defect.
It is wound by the winding package 34 which rotates by 3.
35 is a yarn splicing device, 36 is a second suction means (suction mouth) for guiding the yarn on the winding package side to the yarn splicing device 35, and 14 is a first for guiding the yarn on the yarn supplying bobbin side to the yarn splicing device 35. Each of the winding units U has the above-mentioned members, and a large number of such winding units U are arranged in parallel to constitute one automatic winder.
In addition, the yarn feeding bobbins 24 are inserted into the trays 40 which are independent of each other, and the feeding conveyor 31 and the rotating disc 39 are provided.
It is supplied to the winding position A of the winding unit U via. The empty bobbin 24 'after the winding is completed is the discharge conveyor 32.
And a new yarn supplying bobbin 24 is supplied instead. Since the yarn Y of the yarn supplying bobbin 24 at the winding position A is blown up and easily sucked by the relay pipe 14,
The yarn end Y1 is inserted into the hollow portion of the head portion of the yarn supplying bobbin 24. Of course, the yarn end Y is attached to the yarn layer or the head of the yarn supplying bobbin 24.
You may make it wind around 1.

In the winding unit U described above, when the winding of one yarn supplying bobbin 24 is completed, the next yarn supplying bobbin 2 is wound.
4 is supplied and yarn splicing with the winding package is performed.
When the slab catcher 5 detects a yarn defect, the attached cutter is operated to perform yarn cutting, and after removing the yarn in the yarn defect portion, yarn joining is performed.

That is, after thread cutting, the suction mouth 36 first swivels in the direction from the standby position shown in FIG. 2, and its suction port approaches the winding package 34. When the suction mouth 36 reaches a predetermined position, the reverse rotation roller in the machine frame 21 moves the traverse drum 33, that is, the winding package 34.
Is reversed to loosen the thread so that the thread end is sucked into the suction mouth 36. At approximately the same time as the operation of the suction mouth 36, the relay pipe 14 pivots in the direction from the standby position shown in FIG. 2, and is positioned at the lower end position (the yarn end catching position) above the guide plate 37 below the tenser 27. At this time, the tenser 27 is opened, and the yarn end Y1 that has come out is blown up and sucked into the relay pipe 14. When the defective portion (thread defect) is cut, the yarn end Y1 is captured by the yarn trap 28 provided above the tensor 27, so that the yarn spliced from the yarn supplying bobbin 24 to the yarn trap 28 is sucked. Next, when the suction mouth 36 and the relay pipe 14 which have sucked the yarn end on the winding package side and the yarn end on the yarn supplying bobbin side turn in opposite directions and return to the standby position in FIG. Is guided and the yarn is spliced.

As shown in FIG. 3, the above operation is obtained by one rotation of various cams by the first cam shaft 11, the second cam shaft 12, and the third cam shaft 13. This cam shaft 11,
12 and 13 are driven via a gear, an intermediate gear, etc. fitted to the output shaft of one cam motor (driving device) 4. The reference numeral 3 is a drum motor. A magnet 16 is attached at a predetermined rotation angle position of the cam 15 fitted on the first cam shaft 11, and a magnetic sensor 17 for detecting the magnet 16 is attached at an appropriate position on the machine frame 21.

By the way, splicing is not always successful once. For example, the yarn end of the winding package 34 may remain stuck to the package surface, and the yarn end may not be sucked by the second suction means (suction mouth) 36. In this case, there is a high probability that the yarn splicing will be successful by repeating the yarn splicing operation several times. Therefore, in each winding unit, even if the yarn splicing operation fails, the same yarn splicing operation is repeated up to three times. Then, the number of yarn splicing errors up to three times is stored in the event memory 6, and if the third failure also occurs, the button 38 projects and the operation of the winding unit is stopped. This protruding button 3
By 8 the operator identifies the winding unit that is stopped,
Eliminate troubles such as loosening the thread end.

However, the cause of repeating the yarn joining operation is not limited to the failure during the yarn joining operation. When defective yarns (yarn defects) continuously exist, defective yarns are detected even after restarting immediately after yarn splicing after removing the vicinity of defective yarns, and yarn splicing is performed again. Since the repetition of the yarn splicing operation is not caused by a yarn splicing error, the yarn splicing operation is repeated many times if left unattended. However, since this is an abnormal situation, the number of yarn defects per predetermined time (predetermined yarn length) is counted in the event memory 6 described above, and it is detected that the yarn has many yarn defects (defective bobbin). ing.

Up to now, when a defective yarn is detected, an alarm is issued, the winding unit is stopped and the operator's inspection is awaited. However, in today's highly automated automation winders, the number of operators is small and the corresponding winding unit remains stopped for a long time before being inspected. That is, the operating rate of the automatic winder decreases.

According to past experience, when an alarm is generated due to a defective yarn, the defective yarn often disappears and the normal condition is restored when a considerable amount of yarn is removed. Of course, even if the yarn supplying bobbin 24 is replaced, the normal state is restored. It is very wasteful to stop the winding operation and call the operator to return to the normal state by such a simple process. Therefore, when it is detected that a large number of yarn defects occur, that is, when the number of yarn defects per predetermined yarn length exceeds the set number, the yarn splicing operation performed after the detection is the normal yarn splicing operation (the cam motor 4 continuously Instead of driving the cam 15 to make one continuous rotation), the yarn joining operation is performed according to the defective yarn removing program. This yarn splicing operation is almost the same as the normal yarn splicing operation,
The first suction means (relay pipe) 14 is at the yarn end capturing position 14
In (B), it is different in that it is stopped for a longer time than usual.

In order to carry out the stop longer than the normal time, the following is done. That is, when the cam motor 4 is driven to rotate the cam 15 and the magnet 16 on the cam 15 coincides with the magnetic sensor 17, a signal is generated from the magnetic sensor 17 and the cam motor 4 is temporarily driven until the set time of the timer elapses. Stop. Since the mounting position of the magnet 16 is determined so that the first suction means 14 is positioned at the yarn end catching position when the magnet 16 coincides with the magnetic sensor 17, the magnet 16 and the magnetic sensor 17 are connected to each other. If the cam motor 4 is temporarily stopped in a state in which the values match with each other, the first suction means 14 will be stopped at the yarn end catching position for a longer time than usual (during normal operation, the cam motor 4 is continuously driven). When the first suction means 14 is stopped for a predetermined time, for example, when stopped for a few seconds, the yarn end on the yarn supplying side is sucked for only a few seconds, so that the lower yarn of the yarn supplying side having a length of several tens of meters is sucked, The defective yarn portion is almost always removed. Then, after a lapse of a predetermined time, the same yarn joining operation is performed. When the yarn splicing is performed in this manner, the defective yarn is removed, and the subsequent rewinding operation is smoothly performed. The stop time may be set to a time such that all the yarn wound on the yarn supplying bobbin is removed.

In the case where the unwinding assisting device 26 for controlling the ballooning of the yarn unwound from the yarn supplying bobbin 24 is provided, which is composed of the fixed position diaphragm 26a and the cylindrical body 26b which descends in accordance with the unwinding, blow nozzle 26 c of the thread is provided in the aperture 26a. Therefore, the first suction means (relay pipe) 14 while stopped at the lower end position and actuating the blow nozzle 26 c, aspirated yarn end Y1 of the yarn feeding bobbin 24 can be performed smoothly.

The case where the defective yarn is removed at the lower end position by stopping the first suction means (relay pipe) 14 at the predetermined position for the predetermined time has been described. However, the yarn splicing operation time in the yarn splicing device is lengthened to increase the yarn splicing time. When the splicing is to be performed reliably, the first suction means (relay pipe) 14 is stopped for a predetermined time before the retracted position, and the yarn splicing device is also stopped while the air nozzle that entangles the yarn is being jetted. You can easily extend the time.

[0031]

According to the automatic winder of the present invention, the suction means can be stopped at a desired position for a desired time depending on the situation. Therefore, even when the yarn defect occurs frequently, it is possible to avoid be stopped for a long time the relevant winding unit reduces the stopping number of the winding unit, the entire automatic winder operation The rate can be improved. Further, the defective yarn removing method in the automatic winder of the present invention can surely remove the yarn defect.

[Brief description of drawings]

FIG. 1 is a block diagram of essential parts of an automatic winder according to the present invention.

FIG. 2 is a device layout diagram of a winding unit.

FIG. 3 is an array diagram of cam shafts of the winding unit.

FIG. 4 is an operation diagram of a relay pipe.

[Explanation of symbols]

U winding unit 2 control box 3 drum motor 4 Cam motor (stopping means) (changing means) 5 Slab Catcher 6 event memory 14 First suction means (relay pipe) 15 cams 16 magnets (stopping means) 17 Magnetic sensor (stopping means) 18 timer (stopping means)

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-56-23172 (JP, A) JP-A-57-199762 (JP, A) JP-A-55-44480 (JP, A) Sankaihei 3- 116354 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) D01H 13/22 D01H 15/00 B65H 67/08

Claims (3)

(57) [Claims] 1. An automatic winder comprising suction means for sucking the yarn wound around a yarn supplying bobbin and guiding it to a yarn joining device.
A changing means for changing the operation of the suction means is provided according to the situation, and the changing means determines the number of yarn defects per predetermined yarn length.
When the number exceeds the constant, the suction means is set to the yarn end catching position of the yarn feeding.
When the number of yarn defects per prescribed yarn length is less than the prescribed number
An automatic winder characterized by being a means for controlling to stop for a longer time . Wherein the yarn splicing device and the obtained winding unit having a suction means provided, the automatic winder according to claim 1, wherein the driving device of the sucking unit per each winding unit is provided. 3. When the number of yarn defects per predetermined yarn length exceeds a predetermined number, the suction means is set at the yarn end catching position of the yarn feeding longer than when the number of yarn defects per predetermined yarn length is less than the predetermined number. The method of removing a defective yarn in an automatic winder is characterized in that the yarn wound on the yarn supplying bobbin is sucked and removed partially or entirely within the set time.