JPH1029765A - Releasing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To correct the attitude of a yarn feeding bobbin inserted upright into a tray to be a specified attitude by providing an attitude correcting member applied for the head part of the yarn feeding bobbin so as to correcting upright inserted attitude of the same. SOLUTION: During bobbin changing, a lever 48 is swung counterclockwise by a cam mechanism 24, a pair of flappers 41 are opened as indicated by a double dotted chain line and a new yarn feeding bobbin 4 is supplied to a releasing position A. Then, after the cam mechanism 24 swings the lever 48, the pair of flappers 41 are closed as indicated by a solid line. Then, about four points of the head outer periphery of the core pipe 4b of the yarn feeding bobbin 4 are held in roughly equally distributed positions. Thus, the attitude of the yarn feeding bobbin 4 inserted upright into the yarn feeding bobbin upright inserting member 18a of a tray 18 is corrected to one coincident with the center axis of the movable cylinder 31 of a releasing assist device 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION For example, a large number of yarn supplying bobbins produced by a ring spinning machine are spliced, and unwound in a cone or cheese-like winding package while removing defective portions such as slabs. In particular, the present invention relates to a device that corrects the posture of a yarn supplying bobbin after supplying the yarn supplying bobbin to an unwinding position in a state of being inserted into a yarn supplying bobbin inserting member, such as a tray type or a magazine type.

[0002]

2. Description of the Related Art An unwinding apparatus applied to an automatic winder will be described. The automatic winder is configured by arranging a large number of weights of a winding unit constituting an unwinding device in parallel, and the equipment arrangement of one weight will be described with reference to FIG.

In FIG. 6, a unwinding device 1 is fixed in position by a support tube 2 and a duct 3, and a yarn Y drawn from a yarn supplying bobbin 4 which is positioned and supplied to a predetermined position of the unit.
Passes through a balloon breaker 6, a disk or gate type tensor 7 for applying a predetermined tension, a slab catcher 8 for detecting a defective portion of the yarn, and the like.
Is wound on the winding package 14 which rotates. 1
5 is a yarn splicing device, 16 is a suction mouth for guiding the upper yarn of the package to the yarn splicing device 15, and 17 is a relay pipe for guiding the lower yarn of the yarn supplying bobbin to the yarn splicing device 15. The unwinding device has the above members, and a number of such unwinding devices are arranged side by side to constitute one automatic winder. In addition, the yarn supplying bobbins 4 are individually placed in independent trays 18.
Is supplied to the unwinding position A of the winding unit 1 via the supply conveyor 11 and the rotating disk 19 in a state of being inserted. Then, the empty bobbin 4 'after the winding is completed is discharged to the discharge conveyor 12, and a new yarn supplying bobbin 4 is supplied instead. The yarn end Y1 is inserted into the hollow at the top of the yarn supplying bobbin 4 so that the yarn Y of the yarn supplying bobbin 4 at the unwinding position A is blown up and sucked into the relay pipe 17.

The yarn Y unwound from the chess part 4a balloons to reach the guide plate 10. The balloon increases the unwinding tension and causes the yarn to break. For this reason, as shown in FIG. 6, the balloon of the yarn unwound from the yarn supplying bobbin 4 is restricted by the balloon breaker 6, and the shape of the balloon particularly at the unwound portion is kept appropriate.

As shown in FIG. 7, the preferred balloon breaker 6 has a cylindrical shape. The balloon breaker 6 is formed into a cylindrical shape, and is placed over the head of the yarn supplying bobbin. Is gradually lowered. Such a device is called a balloon controller or an unwinding assisting device. That is, from the start position where the lower end of the balloon breaker 6 slightly covers the core tube 4b to the lower limit position of the solid line, the balloon breaker 6 descends so as to cover the core tube 4b following the unwinding of the yarn, and from the lower end of the balloon breaker 6 The distance L to the chess unit 4a is maintained at an appropriate value. Therefore, the state where the balloon is restricted is maintained even near the end of the winding.

[0006]

As described above, the yarn supplying bobbin is supplied to the unwinding position in a state of being inserted into the tray, and thereafter, the rewinding of the yarn is started. The tray has a yarn feeding bobbin insertion member projecting upward on a disk, and the yarn feeding bobbin is inserted vertically into the outer periphery of the yarn feeding bobbin insertion member so that the yarn feeding bobbin is inserted vertically. Posture. However, since the core tube of the yarn supplying bobbin is repeatedly used many times, the core tube may be deformed. Further, there is a problem that the yarn supplying bobbin inserted into the tray does not always have a vertical posture due to abrasion of the inner diameter of the core tube of the yarn supplying bobbin. Therefore, it is conceivable to secure the vertical posture by reducing the difference between the outer periphery of the yarn supplying bobbin insertion member and the inner periphery of the yarn supplying bobbin, but it is difficult to automatically insert the yarn supplying bobbin into the tray. There are also problems. In particular, when a cylindrical balloon breaker is used to cover the head of the core tube of the yarn supplying bobbin, the core is not aligned with the core of the core tube. Therefore, a vertical posture of the yarn supplying bobbin with respect to the tray is required.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and is intended to correct the posture of a yarn feeding bobbin inserted into a tray at an unwinding position to a predetermined posture. It is an object of the present invention to provide an unwinding device capable of performing the unwinding.

[0008]

According to a first aspect of the present invention, a yarn supplying bobbin is supplied to a unwinding position in a state where the yarn supplying bobbin is inserted into a yarn supplying bobbin inserting member and the yarn of the yarn supplying bobbin is supplied. An unwinding device for unwinding, comprising a posture correcting member acting on a head of the yarn supplying bobbin so as to correct an insertion posture of the yarn supplying bobbin. Since the yarn supplying bobbin inserted into the yarn supplying bobbin inserting member is elongated, the posture is corrected by applying a posture correcting member to the head of the yarn supplying bobbin. The yarn supplying bobbin is formed by winding a yarn around a core tube to form a yarn layer having a chess portion. The head of the yarn supplying bobbin is near the top of the core tube above the chess section.

According to a second aspect of the present invention, there is provided an unwinding device for unwinding the yarn of the yarn supplying bobbin by supplying the yarn supplying bobbin to the yarn unwinding position with the yarn supplying bobbin being inserted into the yarn supplying bobbin inserting member. A posture correcting member that acts on the head of the yarn supplying bobbin to correct the insertion posture of the yarn supplying bobbin, and a lower part of the yarn supplying bobbin to maintain the posture of the yarn supplying bobbin corrected by the posture correcting member. And a working posture holding member. Since the yarn feeding bobbin inserted into the yarn feeding bobbin insertion member is elongated,
Not only is the posture correcting member acting on the head of the yarn supplying bobbin to correct the posture, but also the posture maintaining member is operated below the yarn supplying bobbin so as to maintain the corrected vertical posture. Here, the lower part of the yarn supplying bobbin is near the root of the core tube up to the yarn layer of the core tube above the tray.

According to a third aspect of the present invention, in the second aspect, a gap is provided between an outer periphery of the yarn supplying bobbin insertion member and an inner periphery of the yarn supplying bobbin. The gap allows relative movement between the yarn supplying bobbin and the yarn supplying bobbin inserting member for posture correction by the posture correcting member and posture holding by the posture holding member.

According to a fourth aspect of the present invention, in any one of the first to third aspects, a cylindrical balloon breaker is provided to cover the head of the yarn supplying bobbin. If a cylindrical balloon breaker covers the head of the yarn supplying bobbin, high accuracy of the vertical posture of the yarn supplying bobbin is required. Therefore, it is preferable to use a posture correcting member or a posture holding member.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a main part of the unwinding device of the present invention, and FIG. 2 is a top view of the posture correcting member in an operating state. In particular, FIG. 1 shows the unwinding position A described in FIG.
5 shows a state in which a new yarn supplying bobbin 4 is supplied by a bobbin change. The bobbin supply system described below is a tray system in which a tray insertion member is protruded from a disk through a tray.

The unwinding device applied to the tray system includes an unwinding assisting device 21, a posture correcting member 22, and a posture holding member 2.
3 and a bobbin change device 25 as main parts. The other device configurations are the same as those described with reference to FIG.

The unwinding assisting device 21 includes a movable cylindrical body 31 as a balloon breaker and a fixed cylindrical body 3 having a throttle 32.
3, and a cylinder 34 as a lifting mechanism, a sensor 35, and a controller 36 are main members.

The movable cylinder 31 is loosely fitted on the outer periphery of the fixed cylinder 33. A two-armed cover 37 is fixed to the outer periphery of the movable cylindrical body 31, and the cover 37 is attached to the guide rod 3.
It is attached to a guide block 39 that moves up and down along the direction 8. The rod of the cylinder 34 is connected to the guide block 39. Therefore, the movable cylinder 31 can be moved up and down in accordance with the expansion and contraction of the rod of the cylinder 34. Further, together with the unwinding of the chess portion 4a of the yarn supplying bobbin 4, the lower end of the movable cylindrical body 31 and the lower end of the chess portion 4a are sequentially lowered so as to become substantially constant, and the core tube 4b of the yarn supplying bobbin 4 is removed.
It is going to cover. Thereby, by appropriately keeping the balloon of the yarn unwound from the chess portion 4a, the unwinding angle of the yarn is increased, and the rise of the unwinding tension and the occurrence of sluffing and fluff are suppressed. The inner diameter D of the movable cylinder 31 is preferably smaller than the outer diameter of the yarn layer of the yarn supplying bobbin 4, and needs to be larger than the outer diameter of the core tube 4b. Less is better. For that purpose, the accuracy of the insertion posture of the yarn supplying bobbin 4 with respect to the tray 18 is required.

The throttle portion 32 is formed by fitting a ceramic pipe into a lower portion of a fixed cylinder 33, and is located above the core tube 4b of the yarn supplying bobbin 4 via the fixed cylinder 33. The squeezing section 32 suppresses the fluctuation of the balloon state of the yarn unwound from the lower end and the upper end of the chess section 4a, reduces the influence on the upper balloon, and stabilizes the upper balloon. Fixed cylinder 33
Is inserted into a cylinder suspended from the guide plate 10 and fixed with bolts or the like. Then, the balloon of the yarn from the squeezed portion 32 to the guide plate 10 is regulated by the fixed cylindrical body 33. The lower end of the movable cylinder 31 at the upper limit position is disposed at a substantially constant distance from the top of the core tube 4b.
So that it does not interfere with

A sensor 35 is attached to the cover 37,
The sensor 35 is a transmission sensor including a light projecting element and a light receiving element provided on each arm of the cover 37,
The chess section 4a of the yarn supplying bobbin 4 is detected. The controller 36 which receives the input of the sensor 35 operates the switching valve 49, and the piston rod of the cylinder 34 is gradually extended, so that the distance between the lower end of the movable cylinder 31 and the chess portion 4a is kept substantially constant. . As the unwinding of the chess unit 4a progresses, an ON signal is transmitted between the transmission-type sensors 35 so that the light passes through, and the controller 36 extends the piston rod of the cylinder 34. Then, the light between the transmission type sensors 35 is blocked by the chess part 4a to generate an off signal, and the controller 36 stops the extension of the piston rod of the cylinder 34. By this repetition, the movable cylinder 31 descends sequentially with unwinding.

The posture correcting member 22 is attached to the above-described unwinding assisting device 21 so as to be openable and closable under the cover 37. The posture correcting member 22 supports a pair of flappers 41 so as to be swingable with respect to a shaft 42. As shown in FIG. 2, each flapper 41 has a trapezoidal notch gripping portion 43, and the outer periphery 4 of the core tube 4b of the yarn supplying bobbin.
It is structured to hold at points. The left flapper 41 in FIG. 1 has an upward link 44, and the right flapper 41 has a downward link 45. A push / pull rod 46 having an engaging portion for engaging the link 44 and the link 45
Is slidably provided in the horizontal direction along the cover portion 37. Usually, a tension spring 47 is used to move the rod 4 on the right side of FIG.
6 is drawn, and the pair of flappers 41 try to open as indicated by the two-dot chain line. Then, when the tip of the rod 46 is pushed, the pair of flappers 41 closes as shown by the solid line and the core tube 4 is closed.
Hold the head near the top of b.

The push / pull rod 46 can be pushed by a lever 48, and the lever 48 is pushed at the upper limit position of the guide block 39 which rises with the piston 34. That is, when the movable tubular body 31 of the unwinding assisting device 21 reaches the upper limit position, the posture correcting member 22 is configured to automatically grip the head of the core tube 4b of the yarn supplying bobbin 4. However, when the bobbin is changed, the bobbin is discharged from the unwinding position and the bobbin is supplied to the unwinding position. Therefore, the bobbin is connected to the cam mechanism 24 that forcibly swings the lever 48 in the counterclockwise direction. Therefore, when the bobbin is changed, the pair of flappers 41 are opened to allow the yarn supplying bobbin 4 to be replaced at the unwinding position A.

The operation of the posture correcting member 22 will be described below. First, at the time of bobbin change, the lever 48 is swung counterclockwise from the position shown in the figure by the cam mechanism 24, and the pair of flappers 41 are opened as shown by a two-dot chain line. Is an empty bobbin), and a new yarn supplying bobbin 4 is supplied to the unwinding position A as illustrated. After that, the cam mechanism 24 moves the lever 48
Is pivoted to the position shown in the figure, the pair of flappers 41 are closed as indicated by the solid line. And the core tube 4b of the yarn supplying bobbin 4
Are gripped at substantially equal positions. Then, the posture of the yarn supplying bobbin 4 inserted into the yarn supplying bobbin insertion member 18a of the tray 18 is aligned with the central axis of the movable tubular body 31 of the unwinding assisting device 21 (the bottom plate 5 on which the tray 18 is placed).
2).

As described with reference to FIG. 6, when a yarn defect such as a slab is detected, the defect is removed and piecing is performed. In this case, the movable cylinder 31 is raised to the upper limit position. Then, the contact bar 48a protruding from the lever 48
In conjunction with this, the pair of flappers 41 is closed. In this case, the flapper 41 also operates as a kink preventer. In other words, the yarn is hooked at the four points of contact between the flapper 41 and the core tube 4a, thereby preventing unwinding and kink (twist) from occurring due to the yarn's own weight. However, since the contact pressure of the four contact points is not high, when the yarn is pulled upward, the yarn passes through the four contact points and can be unwound.

Next, the structure and operation of the posture holding member 23 will be described. A pair of openable and closable chuck members 71 is located below the core tube 4a of the yarn supplying bobbin 4 (below the portion where the yarn layer is wound).
It has a structure to grip. This chuck member 71
After the correction of the attitude of the yarn supplying bobbin 4 by the above-described attitude holding member 22, the attitude of the yarn supplying bobbin 4 is closed and the correct attitude of the yarn supplying bobbin 4 is maintained.

In order to ensure the operation of the posture holding member 23, the outer diameter of the yarn supplying bobbin inserting member 18a of the tray 18 and the inner diameter of the lower part of the core tube 4a of the yarn supplying bobbin 4 are required. It is preferable to have a predetermined amount of gap ε. The gap ε is such that a gap is generated even when any of the yarn supplying bobbins 4 is inserted, and that the inclination of the yarn supplying bobbin 4 slightly falls. Then, the shape of the lower portion of the core tube 4a of the yarn supplying bobbin 4 is not affected by, for example, deformation, that is, the lateral movement operation of the lower portion of the core tube is performed by the yarn supplying bobbin inserting member 18.
a, the posture can be properly adjusted by the posture correcting member, and the posture correcting member 22
The correct posture of the yarn supplying bobbin 4 after the operation of is performed is held by the posture holding member 23 as it is. The posture holding member 23
After the is operated, the flapper 41 of the posture correcting member 22 can be opened.

Further, a detailed structure of a portion related to the chuck member 71 of the posture holding member 23 will be described with reference to FIGS. 3, the chuck member 71 is configured to open and close in conjunction with the operation of the eject lever 51 in the bobbin change device 25 provided between the supply conveyor 11 and the discharge conveyor 12.

The bobbin change device 25 forms a carry-in passage 55 and a discharge passage 56 between the bottom plate 52, the first upper guide plate 53, and the second upper guide plate 54, and unwinds between the two passages 55, 56. The unwinding position A is formed, and the eject lever 51 is used to discharge the tray 18 in which an empty bobbin or the like is inserted from the unwinding position A and to supply the tray 18 in which a new bobbin is inserted to the unwinding position A. It is composed.
In the loading passage 55, the first standby position B of the tray 18 is provided.
And a second standby position C are formed. The eject lever 51 is connected to a shaft 58 by a link mechanism from the cam mechanism 24.
, And has a discharge arm section 60, a take-in arm section 61, and a stopper section 62 integrated with the take-in arm section 61.

The posture holding member 23 supports a pair of chuck members 71 with a shaft 72 so as to be openable and closable. The root extensions of the pair of chuck members 71 are connected by pins 73 to a pair of first links 74. Have been. A pair of first links 7
The pin 75 connecting the four members is also connected to one end of the second link 76. The second link 76 is swingable about a shaft 77, and the other end is connected to a link mechanism of the cam mechanism 24.

As shown in FIG. 5, the chuck member 71
The middle of the thickness direction is a space, and a K-shaped material 71a is provided in this space, and the K-shaped material 71b is
The lower part of the core tube 4b of the yarn supplying bobbin is structured so that it can be firmly gripped at four points. When the second link 76 swings clockwise by the cam mechanism 24 to reach the solid line position, the pair of first links 74 is in a stretched state and urges the chuck member 71 in the closing direction. When the second link 76 swings counterclockwise by the cam mechanism 24 to the position indicated by the two-dot chain line, the pair of links 74 is narrowed and urges the chuck member 71 in the opening direction.

Next, at the time of bobbin change, the unwinding assisting device 21, the posture correcting member 22, the posture holding member 23,
The operation of the cam mechanism 24 and the bobbin change device 25 will be described below.

First, in response to a bobbin change signal, the movable cylinder 31 of the unwinding assisting device 21 shown in FIG. 1 is raised to the upper limit position shown in the figure. However, the pair of flappers 41 are forcibly opened by the counterclockwise swing of the lever 48 by the cam mechanism 24, discharge the empty bobbin in front of the paper thickness direction, and supply a new paper from the back in the paper thickness direction. The yarn bobbin 4 can be supplied.

Next, in FIG. 3, when the eject lever 51 is rotated clockwise from the illustrated position by the cam mechanism 24 (FIG. 4), the tray 18 at the unwinding position A is discharged by the discharge arm portion 60 to the discharge passage 56. Through the discharge conveyor 12. The tray 18 at the first standby position B is taken into the take-in arm 61 by the rotation of the rotary disk 19. Next, when the eject lever 51 turns counterclockwise, the take-in arm 6
The tray 18 taken in at step 1 is carried into the unwinding position A, the next tray 18 becomes the first standby position B at the stopper 62, and a new tray is taken from the supply conveyor 11 to the second standby position C. .

In FIG. 1, the tray 18 of the yarn supplying bobbin 4 carried into the unwinding position A is positioned between the first guide plate 54 (tray positioning means) and the eject lever 51 (tray positioning means). . Next, the lever 48 swings to the solid line position by the operation of the cam mechanism 24, the pair of flappers 41 closes and grips the head of the yarn supplying bobbin 4, and the posture of the yarn supplying bobbin 4 is perpendicular to the bottom plate 52. Correct posture (normal posture).

Next, the second link 76 swings to the position shown in the drawing by the cam mechanism 24 in FIG. 3, the portion of the core tube 4b of the yarn supplying bobbin is gripped by the chuck member 71, and is corrected by the pair of flappers 41. The vertical posture of the supplied yarn supplying bobbin 4 with respect to the bottom plate 52 is fixed. At this time, since there is a gap between the outer diameter of the yarn supplying bobbin insertion member 18a of the tray 18 and the inner diameter of the lower part of the core tube 4b, regardless of the posture of the tray 18, the corrected yarn supplying bobbin 4 The posture can be maintained.

Next, the yarn end Y1 is blown up by blowing up from the tray 18 in FIG. 1, and the yarn is spliced with the upper yarn. Then, slightly after the start of the winding, the movable cylinder 31 covers the core tube 4b of the yarn supplying bobbin 4. Then, the lever 48 swings counterclockwise to open the pair of flappers 41, but the posture of the yarn supplying bobbin 4 remains held by the pair of chuck members 71.

If a yarn break occurs during the winding of the yarn supplying bobbin 4, the movable cylinder 31 rises to the position shown in FIG.
The piecing is performed. In this case, the pair of flappers 41 are closed to not only perform the correction of the posture of the yarn supplying bobbin 4 again, but also function as a kink preventer. Further, at the time of yarn splicing, the yarn end is sucked by the relay pipe 17 and the yarn end is brought into the yarn splicing device 15. However, there is an effect that the length of the yarn end brought in by the relay pipe 17 can be reduced to a necessary appropriate amount.

In the above embodiment, the posture correcting member 22 and the posture holding member 23 cooperate to maintain the posture of the yarn supplying bobbin 4. However, the core tube 4b of the yarn supplying bobbin 4 is described. By appropriately setting the difference between the inner diameter of the lower part and the outer diameter of the yarn supplying bobbin insertion member 18a of the tray 18, the posture corrected by the posture correcting member 22 can be maintained.

Also, the description has been given of the winding unit as the unwinding device in the tray type automatic winder that supplies the bobbin to the unwinding position (winding position) by the tray.
A magazine for storing bobbins is provided for each winding unit, and the posture forcing member and the posture holding member of the present invention are also applied to a magazine-type winder for supplying a bobbin from the magazine to a peg provided in each unit. it can.

[0037]

As described above, according to the first aspect of the present invention, since the insertion posture of the yarn supplying bobbin inserted into the yarn supplying bobbin insertion member is corrected by the posture correcting member, it can be used repeatedly. Even if the yarn supplying bobbin is used or the yarn supplying bobbin is deformed or worn, the yarn supplying bobbin inserted into the yarn supplying bobbin inserting member can be brought into a normal posture. As a result, there is an effect that the unwinding tension is stabilized and the shape of the winding package is improved.

According to the second aspect of the present invention, the posture of the yarn feeding bobbin inserted into the yarn feeding bobbin insertion member is corrected by the posture correcting member, and the corrected insertion posture is changed by the posture holding member. Because it is held, even if it is a yarn feeding bobbin used repeatedly and many times, or a deformed or worn yarn feeding bobbin,
Not only can the yarn feeding bobbin inserted into the yarn feeding bobbin insertion member be in a normal posture, but also the normal posture can be maintained during unwinding (during winding). As a result, the effect of stabilizing the unwinding tension and improving the shape of the winding package is surely achieved.

According to the third aspect of the present invention, in addition to the effect of the second aspect, a gap provided between the outer periphery of the yarn supplying bobbin inserting member and the inner periphery of the yarn supplying bobbin is provided between the yarn supplying bobbin and the bobbin. The effect that the operation of the posture correcting member and the posture holding member is reliably performed and the effect that the yarn feeding bobbin can be easily inserted into the yarn feeding bobbin insertion member easily. And play.

According to the fourth aspect of the invention, in addition to the effects of any one of the first to third aspects, by increasing the accuracy of the vertical posture of the yarn supplying bobbin, the core of the core tube and the core of the cylindrical body coincide with each other, and This has the effect of stabilizing the yarn tension and preventing the occurrence of thread breakage due to unstable yarn tension when a balloon breaker is used.

[Brief description of the drawings]

FIG. 1 is a front view of a main part of an unwinding device according to the present invention.

FIG. 2 is a top view in an operating state of a posture correcting member.

FIG. 3 is a top view of a lower portion of the unwinding device of the present invention.

FIG. 4 is a sectional view of a lower portion of the unwinding device of the present invention.

FIG. 5 is a top view of the posture holding member in an operating state.

FIG. 6 is an equipment layout of the unwinding device.

FIG. 7 is a front view showing a balloon breaker of the unwinding device.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 unwinding device 4 yarn feeding bobbin 4b core tube 18 tray 18a yarn feeding bobbin insertion member 21 unwinding assisting device 22 posture correction member 23 posture holding member 24 cam mechanism 25 bobbin change mechanism 41 a pair of openable flapper 71 a pair of flapper Openable and closable chuck member A Unwinding position

Claims (4)

[Claims] An unwinding device for feeding a yarn supplying bobbin to an unwinding position in a state where the yarn supplying bobbin is inserted into a yarn supplying bobbin inserting member to unwind the yarn of the yarn supplying bobbin. An unwinding device provided with a posture correcting member acting on the head of the yarn supplying bobbin so as to correct the standing posture. 2. An unwinding device for unwinding a yarn of a yarn supplying bobbin by supplying the yarn supplying bobbin to an unwinding position in a state where the yarn supplying bobbin is inserted into a yarn supplying bobbin inserting member. A posture correcting member acting on the head of the yarn supplying bobbin to correct the standing posture, and a posture holding member acting on a lower portion of the yarn supplying bobbin so as to maintain the posture of the yarn supplying bobbin corrected by the posture correcting member. And an unwinding device provided with: 3. The unwinding device according to claim 2, wherein a gap is provided between an outer periphery of the yarn supplying bobbin insertion member and an inner periphery of the yarn supplying bobbin. 4. The unwinding device according to claim 1, further comprising a cylindrical balloon breaker that covers a head of the yarn supplying bobbin.