JPH11106138A - Pick finding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent entanglement of yarn to wind up on a package with back wind yarn by providing a means to remove the tail yarn side of the back wind yarn which is cut off. SOLUTION: A rotary cutter 47 is rotated by a drive motor 51 in a state where a fine spinning bobbin B is rotated in the winding direction of yarn when a searcher cuts off back wind yarn y1. At this time, the tail yarn side of the cut-off yarn y1 is sucked to a suction port 45 and a yarn suction hole 47a by applying suction force on the bobbin B through each of the yarn suction holes 47a and the slit type suction port 45 by negative pressure in the inside of the cutter 47. In this state, the sucked yarn y1 is removed from the bobbin B by transferring it in the rotating direction forcibly by the yarn suction hole 47a of the cutter 47 by rotation of the cutter 47, cut off by a cutter 48 and sucked and discharged through a connector 49 and an air duct 50. Consequently, it is possible to prevent cutting of yarn during wind up on a package as it is entangled with the back wind yarn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tapping device for removing a tail yarn side of a backwind yarn wound on a spinning bobbin or the like and a bunch winding yarn.

[0002]

2. Description of the Related Art In a spinning machine, yarn is generally wound while being traversed from a lower portion to an upper portion of a tube by a building motion of a ring rail, thereby producing a spinning bobbin. On the spinning bobbin in which the yarn is wound up to the top of the tube, a spiral backwind yarn is wound on the surface of the yarn layer by lowering the ring rail at high speed, and a bottom bunch is continuously formed at the root of the tube. The spinning bobbin thus produced is conveyed to a winder (winding machine) while standing on a tray. During the transportation, the spinning bobbin is unwound from the bottom bunch by an unwinding device, cut off a backwind yarn, is unrolled into a spinning bobbin, is supplied to each winding unit, and is wound as a package.

[0003]

However, in the conventional reeling device, the reeling process is performed by cutting the backwind yarn of the spinning bobbin. However, when the bottom bunch is not completely unwound, the reeling operation is performed. When the winding yarn is cut, the tail yarn side of the backwind yarn continuing to the bottom bunch exists over or near the yarn layer surface of the spinning bobbin (shown in FIGS. 7A and 7B). In this state, when the winding process from the spinning bobbin to the package is started by each wanding unit by performing the tapping process, the backwind yarn extending over the yarn layer surface of the spinning bobbin is wound into the package during winding. There is a risk that the thread may be entangled with the thread to be cut (see FIG. 7C).

SUMMARY OF THE INVENTION [0004] The present invention provides an outlet device capable of removing the cut backwind yarn from the tail yarn side, thereby preventing yarn breakage during winding from the bobbin to the package.

[0005]

According to the present invention, there is provided a removing device for removing the tail yarn side of the cut backwind yarn. Therefore, after the cutting device cuts the backwind yarn, the yarn of the bobbin is wound. The tail yarn side of the backwind yarn existing on or near the layer surface can be removed, and the yarn wound around the package by the winding machine can be prevented from being entangled.

When the removing means is disposed at a position facing the cutting means with the bobbin interposed therebetween, cutting of the backwind yarn and removal of the backwind yarn on the tail yarn side are continuously performed with the bobbin held at the same position. You can do it.

Further, unwinding means for unwinding a bunch winding wound around the end of the bobbin continuously with the backwind yarn is provided on the upstream side of the conveying of the bobbin with respect to each of the above means. The bunch winding to be wound can be unwound, and it is possible to avoid a state in which the tail yarn side of the backwind yarn is fixed to the bobbin by the bunch winding. Further, when the unwinding means and the removing means are constituted by the same member, the number of components constituting the feeding device can be reduced.

When the suction port of the removing means has a long slit shape extending vertically along the surface of the yarn layer of the bobbin, the tail yarn side of the cut backwind yarn exists over the surface of the yarn layer of the bobbin. Even so, the backwind yarn is guided to the rotary cutter from the long slit shape, and can be reliably removed by suction together with the remaining bunch winding yarn.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

Referring to FIGS. 1 and 2, an outlet device 1 is
It is arranged at a processing station S connected to a winder (winding machine) having a plurality of winding units for winding the yarn of the spinning bobbin B into a package. Suction device 1
Is provided along the transport path 2 leading to the winder,
A pouring machine 3 for performing a pouring process 3, a searcher 4 for cutting the backwind yarn y1 wound on the surface of the yarn layer of the spinning bobbin B
(Cutting means), a tail yarn removing machine 5 (removing means) for removing the tail yarn side of the backwind yarn y1 cut by the searcher 4
And a bunch unwinder 6 (unwinding means) for unwinding the bunch winding yarn y2 of the bottom bunch continuously wound around the backwind yarn y1 of the spinning bobbin B. The spinning bobbin B is wound by a spinning machine (not shown) while the yarn is traversed from the bottom to the top of the tube,
A spiral backwind yarn y1 is wound around the yarn layer surface,
It is produced by winding the bunch winding thread y2 of the bottom bunch around the base of the tube. Then, the spinning bobbin B is inserted in a standing posture into a beg of the tray T guided by being engaged with the transport belt 2A (round belt) of the transport path 2 and transported toward the winder. Each of the devices 3 to 6 of the reeling device 1 is supplied to each winding unit of the winder through unwinding of the bunch winding yarn y2, cutting of the backwind yarn y1, removal of the tail yarn side of the backwind yarn y1, and reeling processing.

Next, each of the devices 3 to
6 will be described in detail with reference to FIGS.

Referring to FIG. 3, a tapping machine 3 includes a searcher 4
A suction mechanism 10 that draws the winding side of the backwind yarn y1 cut in the above into the spinning bobbin B and performs an outlet process, and suctions the cut backwind yarn y1 above the spinning bobbin B to guide it. And the suction mechanism 1
Spinning the backwind yarn y1 guided by the spinning bobbin B
And a suction mechanism 11 drawn into the inside.

The suction mechanism 10 includes a cylindrical body 12 that covers the spinning bobbin B stopped at the outlet position P from above, a shutter cutter 14 connected to the cylindrical body 12 by an elastic bellows hose 13, and a shutter cutter 14. Pipe 1 connected to the airflow generating means at the outlet pipe
5 and so on. The cylinder 12 can be moved up and down by an elevating cylinder (not shown) arranged in the main body 3A of the unwinding machine 3. A movable shutter 16 for cutting the backup yarn y1 passing therethrough in a fixed length is provided in the shutter cutter 14, and a V-shaped guide 17 for guiding the yarn end of the suctioned backup yarn y1 to a predetermined position is provided in the suction pipe 15. Is provided. Also, the suction mechanism 11
Has a suction pipe 18 that is arranged below the transport path 2 of the tray at the exit position P, and that draws the backwind yarn y1 cut to a fixed length by the cutter shutter 14 into the spinning bobbin B. Of the tray T at the exit position P is directed toward the center of the lower surface of the tray T. Further, a suction shutter 18a which can be opened and closed is provided in the middle of the suction pipe 18.
Is provided. 20 is a bobbin holding lever for holding the lower part of the spinning bobbin B where the yarn is not wound, and 21 is a head holding lever for holding the backwind yarn y1 unwound and sucked by the suction pipe 15 onto the spinning bobbin B. It is.

Then, the taping machine 3 draws the winding side of the backwind yarn y1 cut as described below into the spinning bobbin B and performs a tapping process. First, the lower part of the spinning bobbin B transported to the exit position P is fixed by the bobbin holding lever 20. Simultaneously with the operation of the bobbin holding lever 20, the movable shutter 16 of the suction cutter 14 is opened, and the suction pipe 15 and the cylinder 12 are communicated with each other. After generating an airflow (suction force) toward 12, the cylinder 12 is lowered toward the spinning bobbin B. As a result, the yarn end (winding side) of the cut backwind yarn y1 is sucked from the cylindrical body 12 and the bellows pipe 13 to the suction pipe 15, and is pressed by the head holding lever 21 to stop unwinding. Thereafter, by closing the movable shutter 16, the backwind thread y1 sucked into the suction pipe 15 is cut,
The yarn end of the backup yarn y1 is drawn into the spinning bobbin B by the suction force of the suction tube 35, and is subjected to a tapping process.

In FIG. 4, the searcher 4 and the tail yarn removing machine 5 are provided on the upstream side of the feeding machine 3 in the conveying direction, and are disposed at the processing station S at a position facing the spinning bobbin B to be conveyed. (Also shown in FIGS. 1 and 2). The searcher 4 includes a cutter 30 that cuts the backwind yarn y1 of the spinning bobbin B stopped at the cutting and removing position Q, a driving mechanism 31 that moves the cutter 30 in the XY axis direction, And a bobbin holding mechanism 32 for appropriately holding the upper end. The cutter 30 is a plate-like body having a blade surface 30 a of ceramics or the like on one side, and is attached to the cutter bracket 33 with a plurality of bolts. In the cutter bracket 33, the cutter 30 is overlapped on one end side with the cutter blade surface 30a obliquely upward. Then, in front of the cutter blade surface 30 a, although not shown, a yarn scooping unit for scooping the backwind yarn y1 from the yarn layer surface of the spinning bobbin B, and the backwind yarn y1 scooped by the yarn scooping unit 14 to the cutter 30. A guiding thread guide is provided.

The driving mechanism 31 includes a cutter bracket 33.
Horizontal cylinder 35 for moving (cutter 30) in the X-axis direction (horizontal direction) while guiding it with guide rod 34
And a vertical cylinder 37 that moves in the Y-axis direction (vertical direction) while guiding the horizontal cylinder 35 and the like together with the cutter bracket 33 (cutter 30) with the plurality of guide rods 36, and is provided on the transport path 2. Support rail 3
8 and is entirely suspended near the side of the transport path 2 of the processing station S. The bobbin holding mechanism 32
Right above the spinning bobbin B at the cutting detection position Q, the support rail 38
The air cylinder 39 has an air cylinder 39 attached downward and a pressing member 40 rotatably connected to the air cylinder 39. Inside the holding member 40, a conical depression is formed following the upper part of the spinning bobbin B, and the inner peripheral surface of the bottom is in contact with and covers the upper part of the tube of the spinning bobbin B. In addition, the spinning bobbin B at the cutting and removing position Q
The yarn is rotated in the yarn winding direction R by a drive motor 42 that rotates a transmission roller 41 that comes into contact with a tray T in the inside.

Then, the searcher 4 cuts the backwind yarn y1 of the spinning bobbin B as follows. First, the holding member 40 is lowered toward the spinning bobbin B stopped at the cutting and removing position Q, and the standing posture of the spinning bobbin B is secured by the contact of the holding member 40. Thereafter, the cutter bracket 33 is horizontally moved to the spinning bobbin B by the horizontal cylinder 35, and the yarn scooping portion of the cutter 30 is brought into contact with the yarn layer surface. In this state, the tray T is rotated by the drive motor 42, and the spinning bobbin B is rotated around the axis (winding direction R). By this rotation, the backwind yarn y1 on the yarn layer surface is caught by the yarn scooping unit, and the cutter bracket 33 is raised by the vertical cylinder 37. Thereby, the captured backwind yarn y1 is applied to the blade surface 30a of the cutter 30 from the yarn guide portion, and is cut in a shearing manner.

The tail thread removing machine 5 has a suction port 45 facing the spinning bobbin B at the cutting and removing position Q. As shown in FIG. A cutter 48 that is in contact with the outer periphery of the cutter 47 is arranged. The suction port 45 has a long slit shape extending from the upper portion to the lower portion of the bottom bunch along the yarn layer surface of the spinning bobbin B, and is formed so that the slit width gradually decreases from the upper portion to the lower portion. Have been. As shown in FIG. 5, the rotary cutter 47 has a plurality of thread suction holes 47a formed on the peripheral surface thereof so as to face the suction ports 45, and a hollow connector 49 and an air duct 50 are connected to each other at an upper portion. The rotary cutter 47 is connected to the connector 49 and the drive motor 5.
It is rotated by a transmission belt 53 spanned between one pulley 52. The air duct 50 is connected to a suction source (not shown). The cutter 48 is in contact with the outer periphery of the rotary cutter 47 as shown in FIG.

Then, the tail yarn removing machine 5 removes the tail yarn side of the backwind yarn y1 of the spinning bobbin B cut by the searcher 4, as described below. When the backwind yarn y1 is cut by the searcher 4, the rotary cutter 47 is rotated by the drive motor 51 while the spinning bobbin B is rotated in the yarn winding direction R. As a result, a suction force acts on the spinning bobbin B via the yarn suction holes 47a and the slit-shaped suction ports 45 due to the negative pressure generated in the rotary cutter 47, and the tail yarn side of the cut-up backup yarn y1 is suction ports. 45, thread suction hole 47a
Is sucked through. In this state, since the rotary cutter 47 is rotating, the suctioned backup yarn y
1 is removed from the spinning bobbin B by being forcibly transferred in the rotation direction by the thread suction hole 47a of the rotary cutter 47, and the thread is cut by the cutter 48. Then, the thread cut by the cutter 48 is sucked and discharged through the connector 49 and the air duct 50.

In FIG. 6, a bunch unwinding machine 6 is provided on the upstream side of the transfer of the spinning bobbin B with respect to the searcher 4 and the tail yarn removing machine 5, and is basically a tail yarn removing machine shown in FIG. 5 has the same configuration as that of FIG. 5 and includes a suction port 60, a rotary cutter 61 rotated by a drive motor 62 disposed in a suction case 64, and a cutter 63 abutting on the outer periphery of the rotary cutter 61. The suction port 60 is opened in the suction case 64 so as to face the bottom bunch of the spinning bobbin B stopped at the stop position U. In addition, the spinning bobbin B at the stop position U is rotated in the reverse direction V of the yarn winding by a drive motor 68 that rotates a transmission roller 67 that contacts the tray T in the transport path 2.

Then, the bunch unwinder 6 is moved to the stop position U
In the state where the spinning bobbin B is rotated in the reverse direction V around the winding of the yarn by the drive motor 68, the yarn suction holes 61a and the suction ports 60 are opened by the negative pressure generated in the rotary cutter 61 rotated by the drive motor 62. A suction force acts on the spinning bobbin B via
Is sucked through the suction port 60 and the yarn suction hole 61a. In this state, since the rotary cutter 61 is rotating, the sucked bunch winding yarn y2 is forcibly transferred in the rotation direction by the yarn suction hole 61a of the rotary cutter 61, and is released from the spinning bobbin B. The yarn is cut and the yarn is cut by the cutter 63. The yarn cut by the cutter 63 is sucked and discharged through the connector 65 and the air duct 66.

[0022] A tapping device 1 according to an embodiment of the present invention.
Is configured as described above. Next, until the bunch winding yarn y2 is unwound from the spinning bobbin B supplied to the winder, the tail yarn side of the backwind yarn y1 is removed, and the spinning process is performed. Will be described with reference to FIG.
The specific operation of each of the devices 3 and 4 has been described above and will not be described.

The spinning bobbin B produced by the spinning machine is inserted into the beg of the tray T in an upright posture, arranged on the conveying path 2 of the processing station S, and conveyed to the stop position U of the bunch unwinder 6. Is done. Then, by operating the bunch unwinding machine 6, the spinning bobbin B is rotated in the reverse direction V for winding the yarn, and the bunch winding yarn y2 of the bottom bunch is suctioned from the suction port 60 and unwound.

When the unwinding of the bunch winding yarn y2 is completed, the spinning bobbin B is transported to the cutting and removing position Q located between the tail yarn removing machine 5 and the searcher 4, and the spinning bobbin B is wound around the yarn. Rotate in the direction R. By operating the cylinders 35 and 37 of the searcher 4 in this state, the backwind yarn y1 spirally wound around the spinning bobbin B by the cutter 30 is cut. At this time, when the bunch winding yarn y2 is completely unwound by the bunch winding unwinding machine 2 on the upstream side of the conveyance,
The backup yarn y1 is also released from the spinning bobbin B, but the searcher 4 is operated for safety.

After the spinning bobbin B is rotated in the winding direction R after the backwind yarn y1 is cut, the tail yarn removing machine 5 is operated to be at or near the yarn layer surface of the spinning bobbin B. The tail yarn side of the backwind yarn y1 is removed by suction from the suction port 45. At this time, if the bunch winding yarn y2 is not sufficiently unwound by the bunch winding unwinder 6 or if the bunch winding yarn y2 is not sucked at all, not only the backwind yarn y1 but also the remaining bunch winding yarn y2. Is also removed.
Also, since the suction port 45 is formed in a long slit shape,
Make sure the back yarn y1 and the bunch winding y2
And can be guided to the rotary cutter 47. Thereby, when the winder winds up the package, the tail yarn side of the backwind yarn y1 and the bunch winding yarn y2, which are factors that become involved in the yarn wound from the spinning bobbin B to the package.
Can be completely removed.

Then, the spinning bobbin B is conveyed to the tapping position P, and by operating the tapping machine 3, the winding side of the backwind yarn y1 is sucked into the suction pipe 15, and then the spinning bobbin B is spun by the suction pipe 18. It is drawn into the bobbin B to perform the tapping process. In this way, the spinning bobbin B that has been subjected to the unwinding process is transported to the designated winding unit by the transport path following each winding unit of the winder (winding machine), and winding into a package is started. .

[0027]

According to the tapping device of the present invention, the tail yarn removing means removes the tail yarn side of the backwind yarn existing on or near the yarn layer surface of the bobbin cut by the cutting means. It is possible to prevent the backwind yarn from being entangled with the yarn wound on the package, thereby preventing the yarn from being broken during winding.

When the removing means is disposed at a position facing the cutting means with the bobbin interposed therebetween, cutting of the backwind yarn and removal of the backwind yarn at the tail yarn side are continuously performed with the bobbin held at the same position. Therefore, a series of operations from cutting to removal of the backwind yarn with respect to the bobbin can be performed in a short time.

Further, when a unwinding means for unwinding the bunch winding wound around the end of the bobbin is provided on the upstream side of the conveyance of the bobbin, the trailing side of the backwind yarn is formed on the bobbin by the bunch winding. Since the fixed state can be avoided, it is possible to completely eliminate the factor of tangling the yarn during the winding of the yarn into the package by the winding machine. In addition, if the unwinding means and the removing means are formed of the same member, the number of components constituting the feeding device can be reduced, which leads to cost reduction.

When the suction port of the removing means has a long slit shape extending along the surface of the yarn layer of the bobbin, the tail yarn side of the cut backwind yarn exists over the surface of the yarn layer of the bobbin. In addition, the backwind yarn is guided to the rotary cutter from the long slit shape, and can be reliably removed by suction together with the remaining bunch winding yarn.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the configuration of an outlet device.

FIG. 2 is a schematic diagram illustrating a configuration of an outlet device.

FIG. 3 is a perspective view showing a pouring machine of the pouring device.

FIG. 4 is a perspective view showing a configuration of a searcher of the spouting device and an arrangement relationship between the searcher and a tail thread removing machine.

FIG. 5 is a cross-sectional view illustrating a configuration of a tail thread removing machine of the tapping device.

FIG. 6 is a cross-sectional view showing a configuration of a bunch unwinder of the tapping device.

FIG. 7 is a diagram for explaining a problem of a conventional tapping device.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 unloading device 3 unloading machine 4 searcher (cutting means) 5 tail yarn removing machine (removing means) 6 bunch winding unwinding machine (unwinding means) 45, 60 suction port 47, 61 rotary cutter 48, 63 cutter B spinning bobbin (Icon wound bobbin) T tray

Claims (4)

[Claims] 1. A feeding device including a cutting means for cutting a backwind yarn wound on a surface of a yarn layer of a bobbin conveyed to a winding machine, wherein a tail yarn side of the cut backwind yarn is removed. A tapping device provided with a removing means for performing the removal. 2. The spouting device according to claim 1, wherein the removing unit is disposed at a position facing the cutting unit with the wound bobbin conveyed therebetween. 3. An unwinding means for unwinding a bunch winding wound around an end of a bobbin continuous with a backwind yarn is provided upstream of the conveying of the bobbin with respect to each of the means. The means and the removing means are constituted by a rotary cutter that is rotated to suction-wind the yarn of the bobbin, a cutter that cuts the yarn wound on the rotary cutter, and a suction port that guides the yarn to the rotary cutter. Claim 1
Or the tapping device according to claim 2. 4. The tapping device according to claim 3, wherein the suction port of the removing means has a long slit shape extending vertically along a yarn surface layer of the bobbin.