JPH10297827A - Automatic winder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the mixing of the other thread by replacing a thread supply bobbin when a winding package becomes full, catching a thread end of the thread supply bobbin at a thread end of a winding unit, and taking back the caught thread end by gripping a thread of a doffing device to mount on an empty winding pipe exchanged with the package which is full. SOLUTION: When a package P of a winding unit 2 becomes full, a unit control part 9 operates a thread cutting part 16A of a yarn clearer 16 to cut a thread Y of the old thread supply bobbin 4 and stop the rotation of a drum 7. When the thread Y of the old thread supply bobbin 4 is cut from the package P, the thread supply bobbin A in which the winding is completed is removed from each winding unit 2, and a new thread supply bobbin 4 is attached to each winding unit 2. Then, a thread end of the thread supply bobbin 4 is blown up to cut the thread. A thread Y of a new thread supply bobbin 4 in which the thread Y of the old thread supply package 4 and a thread seam γare continuous is suctioned and caught in a yarn trap 17 so that the thread Y of the new thread supply bobbin 4 is not mixed in the package P.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic winder that can prevent a yarn to be wound into the next package from being mixed into a full package.

[0002]

2. Description of the Related Art As a conventional automatic winder, there is one shown in FIGS. 12 and 13, which will be described below.
In FIG. 12, the automatic winder 1 has a plurality of winding units 2 installed in parallel, a doffing device 3, and a discharge conveyor 19 for discharging the package P doffed by the doffing device 3,
A control device 49 including a CPU for controlling the operation of each of the devices 2 and 3 is provided. As shown in FIG. 13, the winding unit 2 winds the yarn Y wound on a plurality or one of the yarn supplying bobbins 4 onto an empty winding tube 5 to form one winding package P.
It is installed in parallel on the machine of the automatic winder 1. The winding unit 2 has a clad 6 for rotatably gripping the winding tube 5, a drum 7 for rotating the winding tube 5 gripped by the cradle 6, and a yarn cutting section 16A for detecting a yarn defect. A clearer 16, a yarn splicing device 15 for splicing the cut yarn Y, a yarn trap 17 for sucking and catching the cut yarn end Y of the yarn supplying bobbin 4, and a yarn trap 17 for cutting the cut yarn end Y. There is provided a relay pipe 20 for picking up and introducing the yarn Y to the yarn joining device 15, and a suction arm 21 for sucking and holding the yarn Y cut and wound on the package P and introducing the yarn Y to the yarn joining device 15. The doffing device 3 travels directly above each winding unit 2 along a rail 26 installed on the upper part of the automatic winder 1, and performs the doffing operation of the package P and the winding provided on the upper part of the automatic winder 1. The take-up tube 5 is supplied to the cradle 6 from the tube storage 37 and is gripped.

[0003] The automatic winder 1 configured as described above is
Plural or one yarn supplying bobbins 4 by each winding unit 2
There is a type in which one package P is wound from a yarn supplying bobbin (for example, a yarn supplying bobbin wound with dyed yarn). A series of operations of the automatic winder 1 are as follows. When the package P is full, the yarn cutting section 16A of the yak clearer 16 is operated to operate
After cutting the yarn Y between the two or after finishing winding a predetermined number of yarns of the yarn supplying bobbin 4, the drum 7 that rotates the package P is stopped. Then, the yarn Y of the new yarn feeding bobbin 4 changed by the winding unit 2 is sucked into the yarn trap 17 (yarn end catching means), and the yarn end of the yarn feeding package 4 sucked by the yarn trap 17 is drawn. The yarn is taken up by the relay pipe 20 and rotated upward to be introduced into the yarn joining device 15, and the yarn end cut and wound into the package P is taken up by the suction arm 2.
1 to extract and hold the suction arm 21
Is rotated downward and introduced into the yarn joining device 15. afterwards,
By operating the yarn joining device 15, the yarn Y of the new yarn supplying bobbin 4 is
The yarn Y of the package P is spliced, and after the splicing is completed, the drum 7 is rotated again to detect whether or not the splicing has been successful by the yarn clearer 16. 7 is stopped, the yarn Y is connected between the yarn supplying bobbin 4 and the package P, and the doffing device 3 performs doffing.

[0004]

In the conventional automatic winder, a new yarn supplying bobbin 4 and a new package P are spliced because it is necessary to doff the package P, and it is determined whether or not the splicing is successful. Since the drum 7 is rotated again for the check, the yarn Y of the new yarn supplying bobbin 4 is wound into the package P, and the yarn Y to be wound into the next package is mixed (crossing). Winded state).

The present invention has been made to solve this problem, and provides an automatic winder capable of preventing a yarn to be wound into a next package from being mixed into a package.

[0006]

In order to solve the above-mentioned problems, an automatic winder according to the present invention comprises: a winding unit for forming one winding package from a predetermined number of yarn supplying bobbins; An automatic winder having a doffing device for exchanging a package of a tube and an empty winding tube, wherein when the winding package is full, the yarn supplying bobbin is replaced, and then the yarn end of the yarn supplying bobbin is changed. The captured yarn end is captured by the yarn end capturing means of the winding unit, and then the captured yarn end is taken out by the yarn gripping means of the doffing device, and is mounted on an empty winding pipe replaced with a full package. Thereby, in an automatic winder that forms one full package from a predetermined number (including one) of the yarn supplying bobbins, the yarn to be wound around the yarn seam or the next package is mixed at the end of the full package. Never do.

According to a second aspect of the present invention, in the first aspect, a yarn splicing operation is performed to catch the yarn end of the yarn supplying bobbin with the yarn end catching means. And an empty package are exchanged, and in the yarn splicing operation, confirmation of the success or failure of the yarn splicing is prohibited.
As a result, when exchanging for a new yarn supplying bobbin, the doffing operation of the full package and the
A take-up tube can be installed.

According to a third aspect of the present invention, a yarn splicing operation is performed after replacing the yarn supplying bobbin, and then the package side is cut from the yarn seam of the yarn connected by the yarn cutting means of the winding unit. The yarn end on the yarn supplying bobbin side is caught by the yarn end catching means, and then the full package and the empty winding tube are exchanged, and the yarn end is caught by the yarn end catching means. The yarn bobbin side is cut and gripped by the yarn gripping means of the doffing device and mounted on an empty winding tube. Thus, the yarn captured by the yarn end capturing means is cut and gripped on the yarn supplying bobbin side from the yarn seam by the yarn gripping means, so that a new yarn supply to be wound next can be performed in a simple procedure. The bobbin thread can be prevented from being mixed into the package.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An automatic winder according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 11, the same reference numerals as those in FIGS. 12 and 13 of the prior art denote the same members, and a detailed description thereof will be omitted.

Referring to FIGS. 1 and 2, an automatic winder 1 is shown.
The winding units 2 installed in parallel with each other wind the yarn Y wound on a plurality or one of the yarn supplying bobbins 4 around an empty winding tube 5 (hereinafter, simply referred to as “winding tube 5”). Then, one package P is taken. The winding unit 2 includes a cradle 6 that rotatably grips the winding tube 5,
And a drum 7 for rotating the take-up tube 5 gripped by. The cradle 6 is provided on the winding unit 2 so as to swing toward the drum 7 or vice versa and to be swingable in the axial direction of the drum 7, and has a bobbin holder 8 for gripping the winding tube 5. I have. The drum 7 is connected to a drive motor 10 whose drive is controlled by a control device 49. Also,
On the yarn supplying bobbin 4 side of the winding unit 2, a yarn joining device 15 for joining the yarn Y, a yarn clearer 16 having a yarn cutting section 16 </ b> A for detecting a yarn defect, and sucking the yarn Y of the yarn supplying bobbin 4. A yarn trap 17 (yarn end capturing means) for catching, a relay pipe 20 for pulling the yarn Y from the yarn trap 17 and introducing it to the yarn joining device 15, and a yarn splicing by suction-holding the yarn Y wound on the package P And a suction arm 21 to be introduced into the device 15. Reference numeral 18 denotes a package guide for guiding the full package P from the drum 7 to a discharge conveyor 19 disposed behind the cradle 6.

Doffing device 3 provided in automatic winder 1
Travels directly above the winding unit 2 along a rail 26 disposed on the frame 25, stops at a predetermined position when the package P of the winding unit 2 is full, and performs a doffing operation. is there. That is, the winding unit 2 is provided with a doffing request lamp LP for requesting the doffing device 3, which is turned on when the package P is full, and the doffing device 3 detects the lighting of the lamp LP. Then, the operation is stopped by the lamp lighting unit 2 and a doffing operation is performed. The doffing device 3 includes a yarn holding device 27 having a yarn cutting / holding portion 27A that can extend to the yarn trap 17, an opener 28 for turning and opening / closing the cradle 6, and a winding tube 5 holding the yarn Y with the cradle 6. And a yarn deviation device 29 that guides the yarn to the side. The yarn gripping device 27 expands and contracts the yarn cutting and gripping portion 27A using an air cylinder, and cuts and grips the yarn Y with the yarn cutting and gripping portion 27A in conjunction with the expansion and contraction. The yarn gripping device 27 is provided above the doffing device 3 so as to be rotatable in the radial direction of the drum 7, and pulls up the yarn Y to the upper side of the drum 7 and turns so as to be interposed between the cradle 6. The mechanism for expanding and contracting the yarn cutting and holding portion 27A of the yarn holding device 27 is not limited to an air cylinder, but may be a mechanism that mechanically slides.

As shown in FIG. 3, the opener 28 of the doffing device 3 has an open lever fixed to a rotating shaft 30 (also shown in FIG. 1) projecting in parallel with the drum 7 from the side of the doffing device 3. An open hand 33 is provided at the tip of the open lever 31 and abuts against the cradle lever 32. The open lever 31 is swingable in the axial direction of the drum 7 and extends toward the cradle 6.
The rotation trajectory a of the open hand 33 to be rotated is provided so as to intersect with the rotation trajectory b of the cradle lever 33 which is rotated integrally with the cradle 6. Then, with the open hand 33 in contact with the cradle lever 32, the opener 28 is rotated so as to be separated from the drum 7 by turning the cradle 6. Swivel enough to touch the. In addition, the opener 28 opens and closes the cradle 6 via the cradle lever 32 by the swing, thereby enabling the doffing of the package P and the mounting of the winding tube 5.

As shown in FIGS. 4 and 5, the yarn deviation device 29 of the doffing device 3 is arranged on the yarn entering side of the drum 7 and contacts the yarn Y pulled up by the yarn gripping device 27 with the drum 7. Yield lever 3 approaching the large diameter end 5A side of winding tube 5
4 and a bunch guide 35 for guiding the yarn Y to the bunch winding position V of the winding tube 5 with the yarn deviation lever 34.
The yarn deviation lever 34 is movable toward the winding tube 5 by a link mechanism 36, and has a yarn hooking portion 34A on the distal end side.
Then, after the yarn pulling lever 34 rotates the winding tube 5 to hook the yarn Y at the yarn hooking portion 34A, the yarn hooking portion 34A is moved in parallel in the axial direction of the drum 7 to reach the bunch guide 35. I do. The bunch guide 35 is provided on the cradle 6 and projects to the yarn entry side of the drum 7 to guide the yarn Y at the bunch winding position V of the winding tube 5A.
have.

In FIGS. 1 and 2, the doffing device 3 has a chucker 38 (also shown in FIG. 3) that grips the winding tube 5 from the winding tube storage portion 37 fixed to the frame 25 and carries it to the drum 7. Shown) and the yarn Y pulled up by the yarn gripping device 27.
A thread insertion lever 39 for inserting the thread into the yarn clearer 16,
A detection sensor 40 for detecting an obstacle on the yarn supplying bobbin 4 side of the winding unit 2 is provided. The thread insertion lever 39 is shown in FIG.
As shown in (1), it is rotatably supported on the side of the doffing device 3 and extends to the yarn clearer 16. Thread insertion lever 39
Has a thread insertion portion 39A that protrudes from the yarn clearer 16 and can touch the thread Y. Then, as shown in FIG. 6, the thread insertion lever 39
9A touches the raised yarn Y, the yarn Y passes over the holding plate 16C, and the slit 16B of the yarn clearer 16 is moved.
Insert inside. As described above, when the yarn insertion means which is the yarn insertion lever 39 for inserting the yarn Y into the slit 16B of the yarn clearer 16 is provided, the pressing plate 16C for preventing the yarn from jumping out is provided.
Is provided, the yarn Y of the yarn supplying bobbin 4 can be reliably inserted into the yarn clearer 16. Detection sensor 4
0 has a detection area c that extends toward the yarn supplying bobbin 4 of the winding unit 2 as shown in FIG.

In FIG. 7, a control unit 49 includes a unit control unit 9 on the winding unit side, a doffing control unit 41 on the doffing device side, and a management controller 50 having a management mode (splicer monitor mode). It is configured. The splicer monitor mode of the management controller 50 is a mode in which the drum 7 is rotated in the reverse direction so that the yarn seam of the spliced yarn Y passes through the yarn clearer 16.

The unit control section 9 includes the winding switch means 5
1 based on the ON / OFF of the control unit 1 and the splicer monitor mode of the management controller 50.
Is controlled to rotate the drum 7. Winding switch means 5
2 includes an electromagnet 51A rotatably provided on the doffing device 3, and a reed switch 51B provided on the front surface of each winding unit 2, as shown in FIGS.
The excitation of the electromagnet 51A is detected by the reed switch 51B. Then, the unit control section 9 sets the reed switch 51B
Controls the drive motor 10 to rotate the drum 7 at low speed or high speed (clockwise α in FIG. 3) in accordance with the number of times of excitation of the electromagnet 51A detected by the motor. Reverse rotation (rotation in the counterclockwise direction β in FIG. 3). The doffing controller 41 controls the operation of the thread gripping device 27, the opener 28, the thread insertion lever 39, and the like based on the output of the detection sensor 40, in addition to the traveling control of the doffing device 3, and the winding switch means 51 Electromagnet 5
Excitation to 1A is also controlled.

Next, a doffing procedure by the automatic winder 1 will be described with reference to FIGS. The automatic winder 1 will be described as being wound from one yarn supplying bobbin 4 into one winding package.

When the package P of each winding unit 2 becomes full, the unit control section 9 operates the yarn cutting section 16A of the yarn clearer 16 shown in FIG.
, The rotation of the drum 7 is stopped. When the yarn Y of the old yarn supplying bobbin 4 is cut from the package P, as shown in FIG.
Is removed from each winding unit 2 and a new yarn supplying bobbin 4 is attached to each winding unit 2. Subsequently, the yarn end of the yarn supplying bobbin 4 is blown up to perform a yarn splicing operation, that is, the yarn Y of the newly blown up yarn supplying bobbin 4 is passed through the yarn clearer 16 by the relay pipe 20 and introduced into the yarn joining device 15. At the same time, the yarn Y wound on the package P (the yarn Y of the old yarn feeding bobbin 4) is introduced into the yarn joining device 15 by the suction arm 21, and as shown in FIG. To operate the yarn Y of the new yarn supplying bobbin 4 and the yarn Y of the package P.
(The yarn Y of the old yarn supplying bobbin 4) is spliced.

The yarn Y of the new yarn supplying bobbin 4 and the package P
When the yarn Y is spliced, the unit controller 9 drives the drive motor 10 in the splicer monitor mode to
Is rotated in the reverse direction so that the yarn seam γ passes through the yarn clearer 16 from the package P side as shown in FIG. When the yarn seam γ passes through the yarn clearer 16, the unit controller 9 stops driving the drive motor 10 to stop the drum 7, and then, as shown in FIG.
The yarn cutting section 16A is operated to cut the yarn Y on the package P side with the yarn knot γ as a boundary, and the yarn Y of the old yarn supply package 4 and the yarn seam γ as shown in FIG. Then, the yarn Y of the new yarn supplying bobbin 4 is continuously sucked and captured by the yarn trap 17. Thereby, the yarn Y of the new yarn supplying bobbin 4 is prevented from being mixed into the package P.

When the above operation is completed, the doffing request lamp LP is turned on, and the doffing control section 41 drives the doffing device 3 to drive the doffing request lamp LP to turn on the package P of the winding unit 2. After stopping upward, the electromagnet 51A of the winding switch means 51 shown in FIG. 3 is rotated to face the reed switch 51B, and the electromagnet 51A is excited to be detected by the reed switch 51B. When the reed switch 51B detects the excitation, the unit controller 9 sets the drive motor 10
Is driven to rotate the drum 7 at low speed (clockwise α in FIG. 3), and the cut yarn Y of the old yarn supplying bobbin 4 is wound around the package P as shown in FIG. After that, the rotation of the drum 7 is stopped. When the yarn Y of the old yarn supplying bobbin 4 is wound on the package P, the cradle 6 is opened by swinging the opener 28 shown in FIG.
After doffing, the cradle 6 is turned to a position sufficient for the take-up tube 5 to come into contact with the drum 7 by rotating the opener 28 shown in FIG.

After opening the cradle 6, the doffing control unit 4
When the detection sensor 40 shown in FIG. 3 does not detect an obstacle on the yarn supplying bobbin 4 side, the yarn gripping device 27 is operated and the yarn trap 17 sucks and captures the yarn as shown in FIG. The yarn Y of the yarn supplying bobbin 4 is cut and gripped on the yarn supplying bobbin 4 side with the yarn seam γ as a boundary, and is taken out. This prevents the yarn Y of the package P (the yarn Y of the old yarn supplying bobbin 4) from being mixed into the new yarn supplying bobbin 4. Then, by raising and turning the yarn gripping device 27, a new yarn feeding bobbin 4 is formed.
Is pulled up, inserted between the cradle 6, and brought into contact with the slit 16B of the yarn clearer 16 (shown in FIG. 6). When the detection sensor 40 detects an obstacle, the thread holding device 27 is not operated. With the yarn Y of the new yarn supplying bobbin 4 in contact with the yarn clearer 16,
By rotating the yarn insertion lever 39 shown in FIG. 3 toward the yarn clearer 16, the yarn insertion portion 39A comes into contact with the yarn Y of the new yarn supplying bobbin 4 and the slit 1 of the yarn clearer 16 is rotated.
6B (shown in FIG. 6).

After inserting the yarn Y of the new yarn supplying bobbin 4 into the yarn clearer 16, the yarn pulling lever 34 shown in FIG. And guide it to the bunch winding position V with the bunch guide 35 (shown in FIGS. 4 and 5). After guiding the yarn Y at the bunch winding position V, FIG.
Is rotated toward the drum 7 to grip the take-up tube 5 from the take-up tube storage 37, and the take-up tube 5 is held between the cradle 6 opened by further rotation to the drum 7. It is brought into contact with the drum 7. In this state, when the swing of the opener 28 shown in FIG. 3 is released and the cradle 6 is closed, the large-diameter end 5A and the small-diameter end 5B of the winding tube 5 are rotatably gripped by the bobbin holder 8 of the cradle 6. Thus, a new yarn supplying bobbin 4 that crosses the inside of the cradle 6
As shown in FIG. 5, the yarn Y is sandwiched between the large-diameter end 5A of the winding tube 5 and the bobbin holder 8 to enable bunch winding.
When the take-up tube 5 and the yarn Y of the new yarn supplying bobbin 4 are gripped by the cradle 6, the chucker 38 and the yarn insertion lever 39 shown in FIG. The gripping of the thread Y of 27 is released.

When a series of operations of doffing the package P and holding the take-up tube 5 is completed, the doffing controller 41 excites the electromagnet 51A again and causes the reed switch 51B to detect it. The unit control section 9 receiving the output of the reed switch 51B drives the drive motor 10 to rotate the drum 7 at a low speed (clockwise α in FIG. 3), thereby moving the winding tube 5 in the opposite direction to the drum 7. Rotated at low speed and bunch winding position V
Then, the yarn Y of the new yarn supplying bobbin 4 is bunch-wound. At this time, the yarn Y is overlapped and wound while being guided by the yarn deviation lever 34 and the bunch guide 35 shown in FIGS.

After the bunch winding is performed, the yarn deviation lever 34 shown in FIG.
The new yarn Y of the yarn supplying bobbin 4 is released to the drum 7, and the doffing controller 41 excites the electromagnet 51A again and causes the electromagnet 51A to detect it with the reed switch 51B. Reed switch 51B
The unit controller 9 which receives the output of FIG. 3 controls the drive motor 10 to rotate the drum 7 continuously from low speed to high speed (FIG. 3).
(The clockwise rotation of α), the winding tube 5 is rotated at a high speed in a direction opposite to the direction of the drum 7, and the yarn Y of the new yarn supplying bobbin 4 traversed by the drum 7 is wound at a high speed. Let it start. Next, when the doffing operation of one winding unit 2 is completed, the doffing device 3 is caused to travel to another winding unit 2 requiring the doffing operation, and a new feeding operation is sequentially performed from the old yarn feeding bobbin 4. The yarn Y to be wound next into the package P while replacing the yarn with the yarn bobbin 4 (the yarn Y of the new yarn supplying bobbin 4)
Then, the doffing operation of the package P and the winding of the yarn Y of the new yarn supplying bobbin 4 are automatically started.

As described above, according to the automatic winder 1 of the present embodiment, the yarn clearer 16 and the yarn gripping device 27 are used.
Is an easy operation of cutting the yarn on both sides of the yarn seam γ, and the state in which the yarn of the package to be wound next into the package P is mixed can be eliminated. Further, before the doffing device 3 arrives at the winding unit 2 for performing the doffing operation, the unit 2 can perform a process until the yarn end of the yarn supplying bobbin 4 is caught by the yarn trap 17.
Can reduce the time during which work is performed by one winding unit 2.

A modification of the automatic winder according to this embodiment will be described with reference to FIGS. still,
9 to 11, the same reference numerals as those in FIGS. 1 to 8 denote the same members, and a detailed description thereof will be omitted.

The automatic winder 1 'shown in FIG. 9 is the same as the automatic winder 1 described above, except that a confirmation feeler 50 is provided. The confirmation feeler 50 is provided below the yarn trap 17 as shown in FIG.
It detects the presence / absence of yarn Y from the yarn. Also,
The confirmation feeler 50 is, as shown in FIG.
9 is connected to the unit control unit 9.

Next, a doffing procedure by the automatic winder 1 'will be described with reference to FIGS.

When the package P of each winding unit 2 is full and the yarn of the yarn supplying bobbin 4 is empty (shown in FIG. 11 (a)), the unit controller 9 returns to the state shown in FIG. 11 (b). At the same time, the rotation of the drum 7 is stopped, the doffing request lamp LP is turned on, and the doffing control unit 41 runs the doffing device 3 to turn on the package P of the winding unit 2 in which the doffing request lamp LP is turned on. Stop right above. When the doffing device 3 is stopped on the package P, the package P is doffed by swinging the opener 28 shown in FIG. 3 to open the cradle 6 and then rotating the opener 28 toward the drum 7. To rotate the cradle 6 to a position sufficient for the winding tube 5 to contact the drum 7 and open the cradle 6. After opening the cradle 6, the doffing control unit 41
Is rotated toward the drum 7 to grip the take-up tube 5 from the take-up tube storage 37, and the take-up tube 5 is held between the cradle 6 opened by further rotation to the drum 7. 7 (shown in FIG. 11C).

When the doffing operation is completed, as shown in FIG. 11 (d), the wound yarn supplying bobbin 4 is removed from the winding unit 2 and a new yarn supplying bobbin 4 is removed from the winding unit 2.
Attach to Subsequently, as shown in FIG. 11 (e), the yarn end of the yarn supplying bobbin 4 is blown up, and the yarn Y of the newly blown up yarn supplying bobbin 4 is passed through the confirmation feeler 50 by the relay pipe 20 to the yarn clear 16. Raise to introduce.
When the confirmation feeler 50 detects the pulled-up yarn Y of the new yarn supply package 4, the unit control unit 9 operates the yarn cutting unit 16 </ b> A of the yarn clearer 16 to remove the yarn Y of the new yarn supply bobbin 4. FIG. 11
As shown in (f), the cut yarn Y on the yarn supplying bobbin 4 side is sucked and captured by the yarn trap 17. Note that if the confirmation feeler 50 does not detect the yarn Y of the yarn supplying bobbin 4, FIG.
The alarm 52 shown at 0 is sounded to inform the operator that a new yarn supplying bobbin 4 is not attached to the winding unit 2.

When the above operation is completed, the doffing control section 41
When the detection sensor 40 shown in FIG. 3 does not detect an obstacle on the yarn supplying bobbin 4 side, the yarn supplying device 27 operates the yarn gripping device 27 to suck and capture the yarn by the yarn trap 17 as shown in FIG. The thread of the bobbin 4 is cut and gripped and pulled. Then, the yarn Y of the new yarn supplying bobbin 4 is pulled up by raising and rotating the yarn gripping device 27, and inserted between the large diameter side 5A of the winding tube 5 inserted between the cradle 6 and the bobbin holder 8. At the same time, it is brought into contact with the slit 16B of the yarn clearer 16. When the detection sensor 40 detects an obstacle, the thread holding device 27 is not operated. By rotating the yarn insertion lever 39 shown in FIG. 3 toward the yarn clearer 16 in a state where the yarn Y of the new yarn supplying bobbin 4 is in contact with the yarn clearer 16, the yarn insertion portion 39A causes a new yarn supply. Touch the yarn Y of the bobbin 4 and slit 16B of the yarn quara 16
(Shown in FIG. 6).

After the yarn Y of the new yarn supplying bobbin 4 is inserted into the yarn clearer 16, the yarn pulling lever 34 shown in FIG. And guide it to the bunch winding position V with the bunch guide 35 (shown in FIGS. 4 and 5). After guiding the yarn Y at the bunch winding position V, FIG.
When the swing of the opener 28 is released and the cradle 6 is closed, the large-diameter end 5A and the small-diameter end 5B of the winding tube 5 are rotatably held by the bobbin holder 8 of the cradle 6. Thereby, the yarn Y of the new yarn supplying bobbin 4 is sandwiched between the large-diameter end 5A of the winding tube 5 and the bobbin holder 8 as shown in FIG. When the take-up tube 5 and the yarn Y of the new yarn supplying bobbin 4 are gripped by the cradle 6, FIG.
Is retracted into the body of the doffing device 3 to release the gripping of the yarn Y by the yarn gripping device 27.

When a series of operations of doffing the package P and gripping the winding tube 5 is completed, the unit controller 9 is excited by exciting the electromagnet 51A and detecting the reed switch 51B.
Drives the drive motor 10 to rotate the drum 7 at a low speed (clockwise rotation α in FIG. 3), so that the yarn Y of the new yarn supplying bobbin 4 is bunch-wound to the bunch winding position V of the winding tube 5. I do. Then, after performing the bunch winding, the yarn Y of the new yarn supplying bobbin 4 is released to the drum 7 by retracting the yarn deviation lever 34 shown in FIG. 4 into the main body of the doffing device 3 and the unit control unit. 9 controls the drive motor 10 to rotate the drum 7 from low-speed rotation to high-speed rotation (clockwise α rotation in FIG. 3), thereby winding the yarn Y of the new yarn supplying bobbin 4 onto the winding tube 5 at high speed. To start with. Next, the doffing device 3 is caused to travel to another winding unit 2 to sequentially replace the yarn supplying bobbin 4 with a new yarn supplying bobbin 4, and the yarn Y (the new yarn supplying bobbin 4 Thread Y)
The doffing operation of the package P and the winding of the yarn Y of the new yarn supplying bobbin 4 are automatically started so as not to mix.

According to the automatic winder 1 'in this modified example, when replacing the yarn with the new yarn supplying bobbin 4, the doffing operation of the full package P and the winding tube 5 can be performed without performing the yarn joining operation. , A new yarn Y of the yarn supplying bobbin 4 can be mounted, so that a series of operations of the automatic winder can be simplified and the doffing speed can be improved.

[0035]

As described above, according to the automatic winder of the present invention, in the automatic winder for forming one full package from a predetermined number (including one) of the yarn supplying bobbins, The end of the tube package is free of thread seams and the yarn to be wound into the next package.

According to claim 2, in addition to the effect of claim 1,
When a new yarn supplying bobbin is replaced with a new yarn supplying bobbin, it is possible to doff the full package and mount a new yarn from the yarn supplying bobbin 4 to the winding tube without performing a yarn joining operation. Can be simplified, and the doffing speed can be improved.

In the third aspect, in addition to the effect of the first aspect,
Since the yarn caught by the yarn end catching means is cut and gripped on the yarn supplying bobbin side from the yarn seam by the yarn gripping means, the yarn of the new yarn supplying bobbin to be wound next by a simple procedure. Can be prevented from being mixed into the package. Also,
Since the yarn is grasped by the yarn grasping means, the package can be doffed without splicing the yarn.

[Brief description of the drawings]

FIG. 1 is a front view of a winding unit and a doffing device of an automatic winder.

FIG. 2 is a side view of a winding unit and a doffing device of the automatic winder.

FIG. 3 is a side view illustrating a configuration of an opener, a thread insertion lever, and a detection sensor of the doffing device.

FIG. 4 is a diagram illustrating a configuration of a yarn-driving device of the doffing device, which is shown in FIG.
FIG.

FIG. 5 is a sectional view taken along the line DD of FIG. 4;

FIG. 6 is a sectional view taken along line EE of FIG. 3;

FIG. 7 is a block diagram showing a controller of the automatic winder.

FIG. 8 is a schematic diagram showing a doffing procedure by an automatic winder.

FIG. 9 is a side view of a winding unit and a doffing device of an automatic winder according to a modification.

FIG. 10 is a block diagram showing a controller of an automatic winder according to a modification.

FIG. 11 is a schematic diagram showing a doffing procedure by an automatic winder in a modified example.

FIG. 12 is a block diagram showing a conventional automatic winder.

FIG. 13 is a side view showing an outline of a winding unit and a doffing device of a conventional automatic winder.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 automatic winder 2 winding unit 3 doffing device 4 yarn feeding bobbin 5 winding tube 6 cradle 7 drum 15 yarn joining device 16 yarn clearer 17 yarn trap (yarn end capturing means) 27 yarn gripping device (yarn gripping means) P package

Claims (3)

[Claims] 1. An automatic winder having a winding unit for forming one winding package from a predetermined number of yarn supplying bobbins, and a doffing device for exchanging a full package and an empty winding tube. When the winding package is full, the yarn supplying bobbin is replaced, the yarn end of the yarn supplying bobbin is subsequently captured by the yarn end capturing means of the winding unit, and then the captured yarn end is doffed. An automatic winder which is mounted on an empty winding tube which has been taken out by the yarn gripping means and replaced with a full package. 2. A yarn splicing operation is performed to catch the yarn end of the yarn supplying bobbin by the yarn end catching means, and before the yarn splicing operation, a full package is replaced with an empty package. 2. The automatic winder according to claim 1, wherein in the yarn splicing operation, confirmation of the success or failure of the yarn splicing is prohibited. 3. After the yarn supplying bobbin is replaced, a yarn splicing operation is performed. Subsequently, the package side is cut from the yarn seam of the yarn connected by the yarn cutting means of the winding unit, and the yarn end on the yarn supplying bobbin side is changed to a yarn. Then, the full package is replaced with an empty take-up tube, and the yarn feeding bobbin side from the yarn seam at the yarn end captured by the yarn end capturing device is gripped by the doffing device. 2. The automatic winder according to claim 1, wherein the automatic winder is cut and gripped by means and mounted on an empty winding tube.