JP2777708B2 - Bobbin support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a twisting machine, a wire drawing machine,
The present invention relates to a bobbin supporting device that supports a bobbin used for a wire rod winding machine or a wire rod feeding machine in a wire rod processing machine such as an extruder.

[0002]

2. Description of the Related Art A conventional bobbin supporting device for rotatably supporting a bobbin in a wire processing machine such as a twisting machine, a wire drawing machine, an extruder, etc., has a first bobbin having a driving rotary shaft 1 as shown in FIG. A support portion 2, a second bobbin support portion 4 disposed opposite to the first bobbin support portion 2 and having a driven rotary shaft 3, and an air cylinder 5 for reciprocating the second bobbin support portion 4 in the axial direction
Some are provided with

In this bobbin supporting device, a tapered cone-shaped first engaging body 9 inserted into a central hole 8 formed in one flange 7 of a bobbin 6 at one end of a driving rotary shaft 1.
And a tapered cone-shaped second engagement body 10 that is inserted into a central hole 8 formed in the other flange 7 of the bobbin 6 at one end of the driven rotary shaft 3. The second bobbin support part 4 is moved in a direction approaching the first bobbin support part 2 so that the first engagement body 9
And the second engaging body 10 is inserted into each central hole 8 of the empty bobbin 6 to pinch the empty bobbin 6, or the second bobbin support 4 is moved in a direction away from the first bobbin support 2. The first engaging member 9 and the second engaging member 10 were extracted from the center hole 8 of the bobbin 6 in which the wire was fully wound, and the bobbin 6 in which the wire was fully wound was dropped onto the receiving stand 11.

However, when the second bobbin support 4 is moved in a direction away from the first bobbin support 2 and the second engagement body 10 is pulled out from the center hole 8 of the bobbin 6, the first engagement body 9 6 may not be able to come out of the central hole 8 and may be caught. Therefore, an air cylinder 12 is provided that enables the pedestal 11 to move in the axial direction and reciprocates the pedestal 11 in the axial direction. The operation of each of the air cylinders 5 and 12 is controlled by a speed controller so that the second bobbin support 4 When the first engaging body 9 falls out of the central hole 8 of the bobbin 6 and falls onto the pedestal 11 by synchronizing the moving speed of the pedestal 11 and the moving speed of the pedestal 11,
By moving the first engaging member 9 in the direction away from the first bobbin support portion 2, the first engaging body 9 is completely pulled out from the central hole 8 of the bobbin 6 so that the bobbin 6 is surely dropped onto the receiving base 11. I have.

[0005]

In the conventional bobbin supporting device, the second bobbin supporting portion 4 and the receiving table 11 are reciprocated synchronously by separate air cylinders 5 and 12, respectively. Is difficult, and the speed controller controls each air cylinder 5, 12
To control the moving speed of the second bobbin support part 4 and the pedestal 11
Even if the moving speeds of the second bobbin support portion 4 are synchronized with each other, it is difficult to always completely tune the moving speeds of the air cylinders 5 and 12 and the friction of each member. In some cases, there was a difference in the moving speed.

For this reason, when the moving speed of the second bobbin supporting portion 4 is faster than the moving speed of the pedestal 11, the bobbin 6
May fall on the cradle 11 in a state approaching the first bobbin support portion 2, or in the worst case, the first engagement body 9 may not be able to come out of the central hole 8 of the bobbin 6 and be caught. If the moving speed of the second bobbin support 4 is slower than the moving speed of the cradle 11, the bobbin 6 drops onto the cradle 11 while approaching the second bobbin support 4. In any case, the position where the bobbin 6 is dropped onto the cradle 11 is not determined, which hinders the conveyance of the bobbin 6 and causes many mistakes in the next process, which adversely affects automation.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a bobbin supporting device which can surely and stably drop a bobbin onto a cradle, prevents mistakes in the next step, and facilitates automation. I do.

[0008]

Means for Solving the Problems According to the present invention, a bobbin is rotatable between a first bobbin support portion and the first bobbin support portion which is disposed opposite to the first bobbin support portion. A second bobbin support portion, a moving means for reciprocating the second bobbin support portion in an axial direction close to and away from the first bobbin support portion, and moving the second bobbin support portion to the first bobbin. A bobbin supporting device comprising: a receiving stand for receiving the bobbin that falls when separated from the supporting portion; a connecting mechanism for connecting the second bobbin supporting portion and the receiving stand is provided; The second bobbin support portion and the pedestal move integrally in the axial direction.

Thus, the second bobbin supporting portion and the receiving base are mechanically connected via the connecting frame to be integrated, and can be moved in the axial direction synchronously by operating only one moving means. Become. Therefore, from the state where the bobbin is sandwiched between the first bobbin support and the second bobbin support,
When the second bobbin support is moved in the axial direction away from the first bobbin support by the operation of the moving means, the pedestal is synchronized with the second bobbin support at a movement speed perfectly synchronized with the movement speed of the second bobbin support. Moving in the direction, the bobbin is reliably separated from the first bobbin support and the second bobbin support and falls into a predetermined range on the cradle. Here, the bobbin
The cradle is set to ensure that it falls within the specified range
Restriction means for restricting the movement of the cradle when moving by the amount
To support the second bobbin when movement of the cradle is restricted.
Because only the part moves, the second bobbin support part
A connection buffer for absorbing a difference in the amount of movement is provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wire winding machine 20 using a bobbin supporting device according to an embodiment of the present invention is shown in FIGS.
A bobbin support device 24 that rotatably supports an empty bobbin 23 loaded from the upper loading portion 22A of the bobbin transport device 21.
And the bobbin 23 supported by the bobbin support device 24
And a lifting device 26 for guiding the bobbin 23 in which the wire is fully wound to the lower unloading portion 22B of the bobbin transporting device 21.

The upper loading section 22 of the bobbin transport device 21
A is provided with a loading table 27 inclined downward toward the wire winding machine 20, and a lower unloading section 22 </ b> B is provided with the wire winding machine 2.
An unloading table 28 inclined upward toward 0 is provided, and the loading and unloading is performed by the bobbin 23 rolling on the loading table 27 and the unloading table 28 naturally.

In FIG. 3, reference numeral 29a denotes a bobbin stopper which swings between a regulation position for regulating the rolling of the bobbin 23 by the operation of the cylinder 29b and a release position for enabling the rolling of the bobbin 23. It has become. Numeral 30 denotes a bobbin elevating unit for improving the efficiency of loading and unloading the bobbin 23.

As shown in FIGS. 1 and 2, the bobbin support device 24 includes a first bobbin support portion 31 and the first bobbin support portion 31.
A second bobbin support portion 32 disposed to face the first bobbin support portion 31 and sandwiching the bobbin 23 with the first bobbin support portion 31, and a direction in which the second bobbin support portion 32 approaches and separates from the first bobbin support portion 31 And a receiving table 34 for receiving the bobbin 23 that falls when the second bobbin support 32 is separated from the first bobbin support 31.

The first bobbin supporting portion 31 is composed of one of a driving rotary shaft 37 rotatably supported on a main body frame 35a via a bearing 36, and one of the bobbin 23 fixed to one end of the driving rotary shaft 37 and supported. A bobbin position regulating body 39 facing the flange 38 of the bobbin 23, and one of the flanges 38 of the bobbin 23 supported movably in the axial direction by the bobbin position regulating body 39.
And a first engagement body 41 having a tapered cone shape inserted into the central hole 40 of the first embodiment.

A drive motor (not shown) is connected to the other side of the drive rotation shaft 37 via gears, belts and the like.

The bobbin position regulating body 39 has a base 44 integrally formed with an inner cylinder 42 externally fitted and fixed to one end of a driving rotary shaft 37 and an outer cylinder 43 arranged so as to surround the inner cylinder 42.
And an annular plate 46 attached to the end of the outer cylinder 43 with bolts 45. Then, the stopper plate 48 fixed to the tip of the driving rotary shaft 37 by the bolt 47 abuts on the end of the inner cylinder 42 of the base 44, whereby the base 44
From the drive rotation shaft 37 is prevented. Also,
The annular plate 46 has a flange 38 of the bobbin 23 in a supported state.
The bobbin 23 is positioned in contact with
An annular friction plate 4 for applying a rotating force of the drive rotating shaft 37 to
9 is pasted.

The first engaging member 41 can be switched between a protruding position shown in FIG. 1 and a retracted position shown in FIG. 2. In the protruding position, the center flange 50 of the first engaging member 41 is annular. In the retreat position, the other end of the first engagement body 41 abuts on the step 42a of the inner cylinder 42, thereby restricting further retreat. A spring 51 is provided between the first engaging body 41 and the base 44 to bias the first engaging body 41 in the protruding position direction.
Is interposed.

The second bobbin supporting portion 32 is rotatably fitted in a cylindrical sliding body 60 slidably disposed in the body frame 35b in the axial direction via a bearing 61. A driven rotary shaft 62, and a tapered cone-shaped second engagement body 64 fixed to one end of the driven rotary shaft 62 with a bolt 63 and inserted into the central hole 40 of the other flange 38 of the bobbin 23 in a supported state. ing.

The moving means 33 includes a main body frame 35b.
, And is disposed opposite the other end of the driven rotation shaft 62. This air cylinder 33
By the operation of the second engagement body 64, the holding position for holding the bobbin 23 with the first engagement body 41, the first engagement body 41
It is possible to switch between a standby position where the bobbin 23 can be carried in or released from being pinched by being separated from the bobbin 23.

The cradle 34 is, as shown in FIGS.
A pair of guide shafts 70a which are inserted between the main body frame 35a on the first bobbin support portion 31 side and the main body frame 35b on the second bobbin support portion 32 and are arranged in parallel with the drive rotation shaft 37 and the driven rotation shaft 62. , 70b by a slider movably in the axial direction. This cradle 34
Is inclined downward toward the lifting / lowering device 26, and is guided to the lifting / lowering device 26 by the rolling of the bobbin 23 on the cradle 34 naturally.

The first bobbin support portion 31 of the receiving base 34
A restricting means 72 for restricting movement in a direction away from the camera is provided. The restricting means 72 includes a moving amount adjusting bolt 73 screwed to the main body frame 35b on the second bobbin supporting portion 32 side and a direction in which the receiving stand 34 is erected on the receiving stand 34 and is separated from the first bobbin supporting part 31. And a regulating plate 74 that comes into contact with the movement amount adjusting bolt 73 when the movement is made. Then, by adjusting the screwing position of the movement amount adjusting bolt 73, the movement amount of the cradle 34 can be adjusted.

Here, the reason why the amount of movement of the cradle 34 is restricted is that if the cradle 34 is too far from the first bobbin support portion 31, the bobbin 23 on the cradle 34 moves in the same manner. This is because there is a problem in moving the bobbin 23 to the lifting device 26. Specifically, when the displaced bobbin 23 rolls on the receiving table 34 in the direction of the elevating device 26, the bobbin 23 is moved to a bobbin positioning guide 10 of a bobbin mounting table 104 described later in the elevating device 26.
6 (see FIG. 6), the bobbin positioning guide 1
This is because a problem such as deviation from 06 may occur.

In FIG. 5, W is a wire rod, and 75 is a bobbin stopper slidably supported at one end of one guide shaft 70a, and is operated by an air cylinder 76 attached to a lower portion of the receiving base 34. By restricting the rolling of the bobbin 23 and placing the bobbin 23 on the convex plate 34 a on the receiving stand 34, the bobbin 23 is lifted and the first bobbin support portion 31
In addition, a switching position can be switched between a regulation position where the holding by the second bobbin support portion 32 is possible and a release position where the bobbin 23 is allowed to roll.

In the bobbin support device 24,
As shown in FIG. 1, a connection mechanism 80 for connecting the second bobbin support portion 32 and the receiving stand 34 is provided, and the air cylinder 3
By the operation of 3, the second bobbin support portion 32 and the receiving stand 34 move integrally.

The connecting mechanism 80 is used to connect the second bobbin support 3
A connecting frame 81 fixed to the other end of the second sliding body 60 and suspended therefrom; a second bobbin supporting portion 32 and a receiving base 3 which are inserted between the lower end of the connecting frame 81 and the receiving base 34;
4 and a connection buffer 82 for reducing the difference in the movement distance.

The connection buffer 82 includes a connection rod 83 screwed to the lower end of the connection frame 81 and disposed in parallel with the guide shafts 70a and 70b on the receiving stand 34 side. A connecting case 84 in which the connecting rod 83 is movably inserted, and a flange 86 inserted in the connecting rod 83 and a flange 86 fixed to the other end of the connecting case 84 are inserted through the connecting rod 83. And a buffer spring 87 provided. Reference numeral 88 denotes a hollow shaft having the other end fixed to the connection frame 81 and a flange 85 fixed to one end. The hollow shaft 88 is externally fitted and fixed to the connection rod 83. 87 is shortened.

Thus, when the second bobbin support section 32 is moved in a direction away from the first bobbin support section 31 by the operation of the air cylinder 33, the receiving base 34 is also connected to the second bobbin support section via the coupling mechanism 80. It moves in the same direction as the second bobbin support part 32 at the same moving speed as the moving speed of the second bobbin 32.
Then, the receiving plate 34 and the connecting case 84 are stopped by the contact of the regulating plate 74 on the receiving plate 34 with the movement amount adjusting bolt 73, but the second bobbin support portion 32 is further moved.
The shortening of the buffer spring 87 absorbs the difference in the amount of movement between the cradle 34 and the second bobbin support 32. Further, the shock received by the second bobbin support portion 32 and the receiving table 34 can be reduced by the buffer spring 87.

In FIG. 1, reference numeral 90 denotes a guide pin, one end of which is fixed to the connecting frame 81 and the other end of which is movably inserted into the main body frame 35b to prevent the connecting frame 81 from rotating due to the rotation of the bobbin 23. doing.

Here, when the second engaging body 64 is at the standby position and the bobbin 23 falls on the receiving base 34 (see FIG. 1), each central hole 40 of the bobbin 23 and the first engaging body 41 and the second In order to make the gaps A with the end faces of the engagement bodies 64 10 mm (in a state where the bobbin 23 is located substantially at the center of the receiving base 34), the projection length of the first engagement bodies 41 from the friction plate 49 is set to 23 mm. If the bobbin 23 is sandwiched between the first engagement body 41 and the second engagement body 64, B (= 33 mm)
Only the second engagement body 64 needs to be moved. Therefore,
Theoretically, if the second bobbin support part 32 is moved by 33 mm × 2 = 66 mm in a direction away from the first bobbin support part 31, the above-mentioned gap A can be made equal to 10 mm.

However, the distance H from the clamped lower end of the bobbin 23 to the cradle 34 is 2 mm (see FIG. 2), and the bobbin 23 naturally rests on the cradle 34 along the tapered side surface of the first engagement body 41. Because it falls, the first engagement body 41
The inclination angle of the tapered side surface is set to 30 °, and the distance from the lower end of the bobbin 23 to the cradle 34 is set to 2 mm in consideration of an error.
Is 3 mm, and the amount of movement of the second bobbin support 32 required until the bobbin 23 falls a distance of 3 mm is X, tan30 ° = 3 mm / X, and X = 3 mm / X
Since tan 30 ° ≒ 5 mm, the second bobbin support portion 32 is required to make the above gaps A equally 10 mm.
In addition, it is necessary to set the amount of movement of the cradle 34, which moves integrally with the second bobbin support portion 32, to 33 mm + 5 mm = 38 mm. Therefore, the moving amount of the cradle 34 is set by the moving amount adjusting bolt 73 so as to be 38 mm.

In the traverse device 25, FIG.
As shown in FIG.
2. Traverse roller 94 passing through dancer roller 93
And the traverse roller 94 reciprocates in the axial direction with the rotation of the bobbin 23 sandwiched between the first engagement body 41 and the second engagement body 64 to supply the wire W to the bobbin 23. I have.

As shown in FIGS. 5 and 6, the elevating device 26 is provided with an elevating unit 100 which is disposed on an extension of the receiving table 34 and receives the bobbin 23 rolling on the receiving table 34, and vertically moves the elevating unit 100. A pair of guides 101 for guiding, and the elevating unit 1
And a drive unit 102 for raising and lowering 00.

The elevating unit 100 includes a bobbin mounting table 104 that is swingably disposed around a horizontal axis 103. The bobbin mounting table 104 faces the bobbin support device 24 when the elevating unit 100 is raised. When the lifting unit 100 is lowered, the lifting pin 105
Is brought into contact with the bobbin 23 so that the bobbin 23 naturally rolls toward the bobbin transport device 21. A pair of bobbin positioning guides 106 are mounted on the upper surface of the bobbin mounting table 104 at an interval corresponding to the axial width of the bobbin 23 to position the bobbin 23. The bobbin 23 on the cradle 34 can be tolerated even if the drop position is slightly shifted.

The drive section 102 comprises an endless chain 108 wound around a pair of upper and lower sprockets 107a and 107b and fixed to the elevating section 100, and a drive motor 109 for rotating and driving the upper sprocket 107a. I have.

In FIG. 5, reference numeral 110 denotes a detecting sensor for detecting that the elevating unit 100 is at the ascending position, 111 denotes a detecting sensor for detecting that the elevating unit 100 is at the descending position,
Reference numeral 112 denotes a bobbin presence / absence detection sensor for detecting whether or not the bobbin 23 is on the bobbin mounting table 104 of the elevating unit 100 at the ascending position.

In the above configuration, the empty bobbin 23 is moved from the upper carry-in portion 22A of the bobbin transporting device 21 to the bobbin supporting device 2.
4, the second bobbin support 32 is moved by the operation of the air cylinder 33 to the first bobbin support 3.
Move in a direction close to 1. Then, the second engagement body 64
Moves from the standby position toward the clamping position and is inserted into the other central hole 40 of the empty bobbin 23, and further pushes the empty bobbin 23 in the direction of the first engagement body 41.
1 moves from the projecting position to the retracted position while the empty bobbin 23 moves.
And the flange 38 of the empty bobbin 23 abuts against the friction plate 49 to position the empty bobbin 23 in the axial direction. Here, since the first engagement body 41 is urged in the protruding position direction by the spring 51,
The first engagement body 41 is securely inserted into the center hole 40 of the empty bobbin 23, and the empty bobbin 23 is positioned concentrically with the rotation axis and is sandwiched between the first engagement body 41 and the second engagement body 64. You.

When the empty bobbin 23 is supported, the wire W of the bobbin 23 in which the wire W is fully wound first is connected to the traverse device 25 and the flange 3 of the empty bobbin 23
The wire W is sandwiched between the friction material 8 and the friction plate 49.

When the driving rotary shaft 37 is driven to rotate in this state, the first engaging member 41, the bobbin 23, the second engaging member 64, and the driven rotary shaft 62 are rotated accordingly, and the wire W is automatically emptied. It is wound around the bobbin 23. Note that the wire W that has been continuous from the fully-wound bobbin 23 to the empty bobbin 23 is
Is lowered, tension is applied to the wire W and the wire W is cut naturally, or the wire W is caught by the bobbin stopper 75 and cut by the tension.

When the winding of the wire W around the empty bobbin 23 is completed, the second bobbin support 32 moves in a direction away from the first bobbin support 31. Then, the second engagement body 64 moves from the holding position toward the standby position. As a result, the second engaging body 64 comes out of the other central hole 40 of the bobbin 23, the bobbin 23 slides obliquely downward along the tapered side surface of the first engaging body 41, and the other flange 38 To fall.

At this time, since the receiving table 34 is moving via the connecting mechanism 80 in a direction away from the first bobbin support portion 31 at a moving speed completely synchronized with the moving speed of the second bobbin support portion 32, Even if the first engagement body 41 is in a state where the first engagement body 41 cannot be completely pulled out of the center hole 40 of the bobbin 23 and is caught,
The bobbin 23 moves in a direction away from the first bobbin support portion 31 with the movement of the cradle 34, and the bobbin 23 falls reliably within a predetermined range on the cradle 34.

When the cradle 34 moves by the set amount of movement, the regulating plate 74 comes into contact with the movement amount adjusting bolt 73 and the cradle 34 stops. The impact at this time can be reduced by the action of the buffer spring 87 as described above.

Even after the cradle 34 stops, the second bobbin support portion 32 further moves and stops after securing a gap between the end face of the second engagement body 64 and the flange 38 of the bobbin 23. At this time, the difference in the amount of movement between the receiving table 34 and the second bobbin support portion 32 is absorbed by shortening the buffer spring 87, and the shock at this time can be reduced by the action of the buffer spring 87.

Thereafter, the bobbin 23 in which the wire rod W on the cradle 34 is fully wound rolls on the cradle 34 by switching the bobbin stopper 75 from the restricted position to the release position.
Positioned on the bobbin mounting table 104 of the elevating device 26,
A new empty bobbin 23 is carried onto the cradle 34. The bobbin 23 in which the wire W is fully wound is moved up and down
Is lowered and the bobbin mounting table 104 comes into contact with the push-up pins 105 and is pushed up, so that the bobbin mounting table 104 rolls in the direction of the lower unloading portion 22B of the bobbin transport device 21 and is unloaded by the lower unloading portion 22B.

As described above, the second bobbin support portion 32 and the receiving base 34 are connected by the connecting mechanism 80, and the movement speed of the second bobbin supporting portion 32 and the receiving base 34 is completely synchronized by the operation of the air cylinder 33. As a result, the bobbin 23 can be reliably dropped within a predetermined range. As a result, the moving speed of the second bobbin support portion 32 and the moving speed of the cradle 34 are different from each other as in the related art, and the position where the bobbin 23 falls onto the cradle 34 is not determined. Problems such as transport failure due to protrusion or contact with the bobbin positioning guide 106 are prevented, and the transport can be reliably performed, facilitating automation. Moreover, only one air cylinder 33 is required to move the second bobbin support portion 32 and the cradle 34, and when the second bobbin support portion 32 and the cradle 34 are driven by separate air cylinders as in the related art. In comparison with this, no moving member or complicated control is required, and the cost is low.

Further, since the regulating means 72 for regulating the movement of the cradle 34 is provided, the second bobbin supporting portion 32
The cradle 34 can be stopped at a fixed position despite the movement of the bobbin 23, and the carry-out position of the bobbin 23 can be set with a simple mechanism, so that the bobbin 23 can be transported more smoothly and reliably.

It should be noted that the present invention is not limited to the above embodiment, and it goes without saying that many modifications and changes can be made to the above embodiment within the scope of the present invention. For example, the bobbin support device of the present embodiment may be used for a wire feeder. The moving means is not limited to an air cylinder, but may be a hydraulic cylinder or an electric motor.

[0047]

As is apparent from the above description, according to the present invention, the second bobbin support and the receiving stand are connected to the connection frame by the operation of the moving means. Since the moving speed of the bobbin is completely synchronized with that of the receiving table, the bobbin can be reliably dropped into a predetermined range on the receiving table. This prevents a problem in which the moving speed of the second bobbin supporting portion and the moving speed of the cradle are different from each other as in the related art, and the drop position of the bobbin on the cradle is not determined, thereby causing an error in the next process. To facilitate automation. And the cradle moves by the set amount
A regulating means is provided to regulate the movement of the cradle when
When the movement of the platform is restricted, only the second bobbin support
The difference between the amount of movement between the second bobbin support and the cradle.
By providing a connection buffer that absorbs
It can be dropped more securely within the predetermined range of the cradle.
You. Also, when the movement of the cradle is restricted and stopped,
The hit can also be mitigated by the connection buffer.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a bobbin support device according to an embodiment of the present invention before and after the bobbin is clamped.

FIG. 2 is a front sectional view of the bobbin supporting device when the bobbin is clamped.

FIG. 3 is a side view of the wire winding machine and the bobbin transport device.

FIG. 4 is a plan view of the same.

FIG. 5 is a side view of the bobbin supporting device and the elevating device.

FIG. 6 is a front view of the lifting device.

FIG. 7 is a front sectional view of a conventional bobbin supporting device.

[Explanation of symbols]

 Reference Signs List 23 bobbin 31 first bobbin support part 32 second bobbin support part 33 moving means 34 cradle 80 coupling mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-52-92852 (JP, A) JP-A-4-97412 (JP, U) JP-B1-54266 (JP, B2) JP-A-49-49 1263 (JP, Y1) Jikken Hei 2-49256 (JP, Y2) Jigyo Sho 61-13482 (JP, Y2) Jigyo Sho 62-46686 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) B65H 54/00-54/553 B65H 67/00-67/056

Claims (1)

(57) [Claims] A first bobbin supporting portion, a second bobbin supporting portion disposed opposite to the first bobbin supporting portion and rotatably holding the bobbin between the first bobbin supporting portion; Moving means for reciprocating the two bobbin support portion in the axial direction to approach and separate from the first bobbin support portion; and the bobbin dropping when the second bobbin support portion is separated from the first bobbin support portion. A bobbin supporting device having a receiving stand for receiving the second bobbin supporting portion and the receiving stand by the moving means.
A connection frame that connects the second bobbin support portion and the cradle so that they can be integrally moved in the axial direction ,
When the cradle moves by a set amount, the cradle moves.
Regulating means for regulating the movement, and movement of the cradle is regulated.
When the second bobbin support moves further, the second bobbin
A connection buffer that absorbs the difference in the amount of movement between the support and the cradle;
Bobbin supporting device, wherein a provided.