JPH09124230A - Bobbin holding peg - Google Patents

Abstract

PROBLEM TO BE SOLVED: To hold the core pipe of a bobbin securely, and to carry out its accurate positioning, by providing a receiver to abut the lower end of the core pipe of the bobbin, and plural holding pieces to pressure contacting the inner peripheral surface of the core pipe in the direction of the same radial angle. SOLUTION: By rotating a fixed shaft 30 in the direction of the arrow 41, a support member 33, a member 33a and a grip member 35 fixed to the support member 33, a shaft 34, and a ring 37 are rotated in the direction of the arrow 42. The support member 33, the member 33a, and the grip member 35 are rotated by making the fixed shaft 30 as the center, the shaft 34 is rotated while moving in the directions of the arrows 45 and 46, and a lever 32 is rotated in the direction of the arrow 43. And when the shaft 34 moves in the direction of the arrow 46, grip pieces 35a and 35e abutted to a taper 34c provided to the shaft 34 are spread towards the outer side direction of the shaft 34, and the inner surface of the core pipe of a bobbin 4 is pressed and grasped. Consequently, the core pipe can be held securely even though its inner diameter is different.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin holding peg for automatically gripping and releasing a core tube of a bobbin.

[0002]

2. Description of the Related Art FIG. 4 is a sectional view showing a conventional bobbin holding peg. Hereinafter, referring to the drawings, 101
Is a fixed shaft having a spherical recess 102 on the upper side.
01 is a bracket 104 to which a peg main body 103 is fixed
Are rotatably supported. A recess 105 is provided on the side of the peg main body 103, and a lever 107 swingably supported by a pin 106 is housed in the recess 105, while a central portion of the peg main body 103 is constantly lowered by a spring 108. The biased sliding body 109 is fitted and supported so as to be slidable. A groove 111 is formed in an upper portion of the sliding body 109, and a projection 110 of a lever 107 is loosely fitted in the groove 111 so that the lever 107 is swung in the arrow direction by the vertical movement of the sliding body 109. Lower end 1 of moving body 109
The reference numeral 12 is spherical and is adapted to be retained in the recess 102 of the fixed shaft 101 at all times. Reference numeral 113 denotes a bobbin core tube receiving plate fixed to the outer peripheral surface 114 of the peg main body 103, and when the bobbin is inserted into the peg, the bobbin core tube end is received to position the bobbin core tube. .
A bobbin has a core tube, which is a tubular body, and a thread wound around the core tube.

Next, the operation will be described. The solid line in the figure shows the state when the core tube of the bobbin is gripped, and the lower portion 112 of the sliding body 109 falls into the recess 102 of the fixed shaft 101, and the lever 107. Is urged toward the solid line position (counterclockwise direction) by the spring 108, and the lever 10
By pressing the inner surface of the core tube of the bobbin by the end portion 115 of 7, the inner surface of the bobbin core tube becomes the outer peripheral surface 1 of the peg main body 103.
14 against which the bobbin core tube is held on the peg. When the bobbin runs out of the wound yarn, the bracket 104 is rotated by a mechanism (not shown), and the peg main body 103 fixed to the bracket 104 is swung to the right or left toward the bobbin replacement position (chain line position in the drawing). At this time, the lower end 112 of the sliding body moves from the recess 102 of the fixed shaft and rides on the outer peripheral surface 116, and the sliding body 109 moves upward,
The lever 107 is drawn into the peg-shaped recess 105,
The grip of the core tube of the bobbin is released. Then, the empty bobbin is pulled out from the peg by means not shown, and the peg main body 103 returns to the solid line position again after the peg is supplied with new bobbin at the chain line position. At this time, the sliding body 10
The lower end 112 of 9 again falls into the recess 102 of the fixed shaft 101, and the new bobbin is gripped on the peg in the same manner as described above.

[0004]

However, as described above, the outer peripheral surface of the stationary peg body and one point of the inner surface of the core tube of the bobbin are brought into contact with each other, and the end portion of one lever causes the inner surface of the core tube of the bobbin to move. In the method of pressing the other one to grip the core tube of the bobbin, for the core tube inner diameter of different bobbins,
The center axis position of the core tube of the bobbin to be held is displaced. As the bobbin, a bobbin core tube having a different material and inner diameter is used depending on the nature and type of the wound thread. Therefore, the positional relationship between the bobbin held by the core tube inner diameter of a different bobbin and the winding device changes, and the winding tension increases or fluctuates. In addition, by only pressing one part of the inner surface with the end of the lever by the spring force, the limit of setting the gripping force is low, the core tube of the bobbin is not sufficiently held, and the thread tension during winding causes the winding to occur. There have been problems such that the fixed position of the core tube of the bobbin to be taken is displaced and the bobbin is pulled out.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, and for different core tube inner diameters of bobbins, the core tube of the bobbin and the winding device are not changed, and the core tube of the bobbin is not changed. The core tube of the bobbin to be wound can be held, and the setting range of the gripping force of the core tube of the bobbin can be increased. (EN) Provided is a bobbin holding peg in which the fixed position of the bobbin is not displaced, the bobbin is removed, the winding tension is increased, and the bobbin holding peg does not fluctuate.

[0006]

In order to achieve the above object, the invention of claim 1 is used in a winder for unwinding a bobbin thread and winding the bobbin core tube with the bobbin core tube. In the bobbin holding peg to be inserted and held, a receiving portion with which the lower end of the core tube of the inserted bobbin abuts, and a plurality of gripping pieces that press-contact the inner peripheral surface of the core tube in a radial equiangular direction . Thereby, the positional relationship between the bobbin and the winding device is not changed even with respect to the inner diameters of the core tubes of different bobbins, and the core tubes of the bobbins to be supplied and inserted are securely held.

According to the second aspect of the present invention, three or more gripping pieces are provided so that the plurality of gripping pieces press and contact at least three positions on the inner peripheral surface of the core tube of the bobbin in the radial equiangular direction.
As a result, the holding force of the core tube against the deflection of the upper portion of the core tube increases, and the axis of the core tube does not shift when the yarn is unwound.

According to a third aspect of the present invention, the gripping piece is provided with a shaft for guiding the core tube, the shaft is connected to a link mechanism, and the gripping piece grips and releases the core tube by the reciprocating motion of the shaft by the link mechanism. To do. Thereby, the setting range of the gripping force of the core tube of the bobbin can be increased, and the core tube of the bobbin to be supplied and inserted can be reliably held.

According to a fourth aspect of the present invention, the receiving portion, with which the lower end portion of the inserted core tube abuts, is formed on the taper surface which spreads in the inserting direction. As a result, the positioning of the lower end of the core tube of the bobbin to be supplied and inserted is always constant and accurate with respect to the core tube inner diameters of different bobbins.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a partial cross-sectional side view showing the entire bobbin supply device to which the bobbin holding peg according to the present invention is applied.

In the bobbin supplying device, each winding weight of the winder is provided with a bobbin accommodating magazine, and each time the bobbin of the winding weight is consumed, the magazine is rotated by one pitch to move the bobbin in the magazine to the winding weight. This device is designed to be dropped and inserted into a bobbin holding peg that is a peg.

The bobbin supplying device for the winder is provided with a door 10 which can be opened and closed downwardly between a magazine 1 and a peg 2, and a guide chute 3 having a V-shaped cross section as a whole is arranged to be inclined toward the peg. The ratchet wheel 6 is fixed to the magazine 1, and the feed claw 8 on the swivel disk 9 meshes with the ratchet wheel 6 by the reciprocating swivel motion of the swivel disk 9, whereby the magazine 1 is rotated intermittently. The first lever 16 and the second lever 1 are attached to one shaft 15 supported by the guide shoe 3 via the bracket 14.
9, the third lever 20 is fixed. First lever 16
Is connected to a U-shaped lever 13 for opening and closing the door 10, an operating shaft 12, a second lever 19 is connected to an operating rod 21, and a third lever 20 is connected to the swivel plate 9 via a connecting rod 22. . Due to the movement of the operating rod 21 in one direction, the first, second, and third levers simultaneously rotate, the door 10 closes, and the swivel board 9 swivels via the third lever 20 and the ratchet wheel 6
Along with that, magazine 1 rotates.

The magazine 1 has a plurality of cylindrical tubular thread accommodating spaces 5 around it, and is rotatably supported integrally with a ratchet wheel 6 on a bracket 7 of a winding weight. 8 is a swivel 9
It is a pawl for feeding the ratchet wheel 6 supported above. The guide chute 3 has a V-shaped cross section as a whole and is fixed to the bracket 7. A double door 10 is pivotally supported 11 at the lower end of the guide chute 3. A shaft 12 having a U-shaped lever 13 fixed to the lower end is supported on the outer side of the guide chute 3, and a bracket 14 supporting a shaft 15 is fixed to the upper part of the guide chute 3 and fixed to the shaft 15. The 1-lever 16 is connected via a rod 17 to a lever 18 fixed to the upper end of the shaft 12. The shaft 15 has a second
The lever 19 and the third lever 20 are fixed, and the second lever 1
Reference numeral 9 is an operating rod 21 and the third lever 20 is connected to the swivel plate 9 via a rod 22. The shaft 15 is biased in the clockwise direction in FIG. , Lever 13 is always door 10
And the door 10 is opened.

To supply the bobbin to the peg 2, the operating rod 21 is pulled to the left. Then, the swivel plate 9 is rotated via the third lever 20, the pawl 8 feeds the pawl wheel 6 by one pitch, the magazine 1 is rotated by one pitch, and the tubular thread 4 accommodated in the magazine 4 is rotated.
1 falls from the cutout portion of the thread receiving plate 23 and is dropped into the guide chute 3. At this time, the first lever 16 also rotates so that the lever 13 pivots from the state shown in FIG. 2 to the state shown in FIG. 1 and engages with the door 10 to close it. Get on and stop. Then, when the operating rod is returned to the right, the first lever 16 is returned and the lever 13 is disengaged from the door 10, whereby the pipe thread in the guide chute 3 is dropped and inserted into the peg 2. Then, the peg 2 turns to the state of the two-dot chain line shown in FIG. 1 and winding is started at this position.

FIG. 2 is a side view showing a state in which the bobbin is supplied to the bobbin holding peg according to the embodiment of the present invention. The bobbin 4 is dropped from the guide chute in the direction of the arrow 4a and is attached to the peg 2 as shown by the chain double-dashed line.
The peg 2 includes a support member 33, a grip member 35, and a shaft 3.
4 and ring 37. The support member is fixed to the fixed shaft 30. The grip member 35 is fixed to the support member 33 with screws 36, 36.

The gripping member 35 has a receiving portion 35a on the downstream side in the direction 4a in which the bobbin is dropped and inserted. Receiver 35
Has a taper that spreads toward the downstream side in the bobbin falling direction. The upstream side of the receiving portion in the bobbin dropping direction is branched into two, and the branched portions 35b and 35d are elastic regions formed to be elastically deformable. Elastic range 35
The gripping piece 35 is provided on the upstream side of the bobbin dropping direction of b and 35d.
The gripping pieces 35c and 35e are also provided on the back side of the shaft 34, and a total of four gripping pieces are arranged at equal angles so as to surround the shaft 34. The ring 37 is loosely inserted in the elastic regions 35b and 35d. Elastic regions 35b and 35d of the support member 35 and the gripping piece 35
The shaft 34 is loosely inserted in c and 35e. An upstream side of the shaft 34 in the bobbin falling direction is a taper 34b having a sharp tip so that the dropped bobbin is guided and inserted into the peg 2. On the downstream side of the taper 34b of the shaft 34 in the bobbin falling direction, an opposite taper 34c is provided.
It has become.

The taper 34c is in contact with the gripping pieces 35c and 35e which have the same inner surface as the taper 34c. A downstream side of the taper 34c of the shaft 34 in the bobbin dropping direction is a columnar portion 34a of the shaft 34. The cylindrical portion 34a of the shaft 34 is loosely inserted in the member 33a fixed to the support member 33. A stopper member 34d is fixed to the columnar portion 34a of the shaft 34. A ring 37 is fixed to the upstream side of the columnar portion 34a by a knock pin 37a. A pin 34e is fixed to the end of the shaft 34. The pin 34e
A lever 32 having a U-shaped end 32e is engaged with the lever 32. The other end of the lever 32 is fixed to the fixed shaft 31, and the fixed shaft 30, the shaft 34, the pin 34e, and the lever 32 form a link mechanism.

Next, gripping and releasing of the core tube of the bobbin by turning the peg will be described. When the bobbin 4 is supplied and inserted at the position of the peg 2 shown in FIG. 2, the lower end of the core tube 4 of the bobbin comes into contact with the tapered receiving portion 35a. And
The center of the lower end of the bobbin is aligned with the central axis of the peg.

FIG. 3 is a side view showing a state in which the bobbin holding peg shown in FIG. 2 is swiveling and holding the core tube of the bobbin 4. As shown in FIG. 3, the fixed shaft 30 rotates in the direction of arrow 41. The rotation shaft 30 is rotated along with the rotation in the direction of the arrow 41.
The support member 33 fixed to the support member 33, the member 33a fixed to the support member 33, the gripping member 35, the shaft 37, and the ring 37 fixed by the pin 37a rotate in the arrow 42 direction. Support member 33, member 33a, and gripping member 3
5 rotates about the fixed shaft 33, but the shaft 34 and the ring 37 form a link mechanism including a lever 32 fixed to the fixed shaft 31 and a pin 34e.
4 turns while moving in the directions of arrows 45 and 46.
The lever 32 rotates about 31 in the 43 direction. Then, the shaft 34 is rotated until the tip end direction on the central axis of the shaft 34 becomes the winding direction of the winding device (not shown). Then, when the shaft 34 moves in the direction of the arrow 46, the gripping piece 3 which is in contact with the taper 34c provided on the shaft 34
5c and 35e and the above-described two gripping pieces (not shown) are expanded toward the outer side of the central axis of the shaft 34 (radial equiangular direction from the central axis) 48 and 48 due to the bending of the elastic regions 35b and 35d. Along with this, the gripping pieces 35, 35e press the inner surface of the core tube of the bobbin 4 into four pieces to be gripped. The winding of the core tube of the bobbin 4 thus gripped is started by a winding device (not shown).

When the winding is completed, the operation reverse to the above is performed. That is, the fixed shaft 30 is rotated in the direction of the arrow 41a, and the support member 33, the member 33a, and the gripping member 35 are correspondingly moved to 42a.
Rotate in the direction. Shaft 34 and ring 37 are indicated by arrow 4
The arrow 45a, 46a, 47a while rotating in the 2a direction
Move in the direction. 32 connected to the shaft 34 rotates about the fixed shaft 31 in the direction of arrow 44a. Ring 3
7 moves in the direction of 47a, so that the gripping members 35c, 35
e and the above-mentioned two gripping pieces not shown are the arrows 48a, 4
It is closed in the 8a direction. The arrow 45 on the shaft 34a
The movement in the a direction is stopped by the stop member 34d.
Then, returning to the state of FIG. 2, the grip of the core tube of the bobbin 4 is released. With respect to the released core tube of the bobbin 4, an empty bobbin is pulled out from the peg 2 by a means (not shown), a new bobbin is again inserted into and supplied to the peg 2, and the above operation is repeated. As described above in detail, the holding peg can automatically grasp or release the core tube of the bobbin 4 by rotating the peg.

In the above embodiment, the bobbin is gripped and released by the taper of the shaft and the gripping piece. However, if the gripping piece is open, the bobbin can be closed with a ring if it has enough pressure to push the inner surface of the bobbin. It does not require the taper of the gripping piece and the reciprocating movement of the shaft. In addition, if the gripping piece has a restoring force to close securely in the closed state, only the taper of the shaft and the reciprocating motion of the shaft are sufficient, and it is not necessary to provide a ring.

In the above embodiment, the drive source is connected to the fixed shaft of the peg because the stress is small. However, depending on the length of the lever of the link mechanism and the position of the fixed shaft, the fixed shaft of the link mechanism may require less stress, and it is preferable to provide a drive source according to the driving force.

In the above embodiment, four gripping pieces are provided. However, if a large number of gripping pieces are provided, the gripping force can be increased, and three gripping pieces are most suitable for positioning the central axis of the core tube of the bobbin. Is. Although the gripping piece is a gripping piece having an elastic region,
A lever whose end has a fixed shaft may be used. Further, by exchanging the gripping member and the shaft, it becomes possible to cope with the core tubes of bobbins having large inner diameters.

[0024]

As described above, according to the first aspect of the present invention, the center positions of the core tubes of the bobbins that are held are always the same even for core tube inner diameters of different bobbins. It is possible to reliably hold the core tube of the bobbin to be supplied and inserted without changing the positional relationship between the tube and the winding device. As the core tube of the bobbin, those having different materials and inner diameters are used depending on the nature and type of the wound thread. Therefore, in the conventional method of holding the bobbin core tube by pressing one point on the bobbin core tube inner surface by the end of one lever on the outer peripheral surface of the stationary peg, the bobbin core tube is held against different bobbin core tube inner diameters. The center axis position of the core tube of the bobbin has been displaced, but such a problem does not occur. Furthermore, accurate positioning of the bobbin at the processing position is facilitated. Therefore, the core tube of the bobbin is not held, and the thread tension during winding causes
There is no problem that the fixed position of the core tube of the wound bobbin shifts or the bobbin falls out.

According to the invention of claim 2, the holding force of the core tube against the deflection of the upper part of the core tube is increased, and the axis of the core tube is not displaced when the yarn is unwound. One part of the inner surface of the bobbin core tube is brought into contact with the peg body, and the other part of the inner surface of the bobbin core tube is levered.
The holding force of the core tube against the deflection of the upper part of the core tube was low only by pressing at the end of the core tube. However, since the bobbin holding peg of the present invention is supported by at least three gripping pieces, the integration of the core tube of the bobbin and the gripping piece can be enhanced.

According to the invention of claim 3, the setting range of the gripping force of the core tube of the bobbin can be increased, and the core tube of the bobbin to be supplied and inserted can be reliably held. Although the limit of setting the gripping force is low only by pressing with the spring force, the bobbin holding peg of the present invention can set a sufficient gripping force and can reliably hold the core tube of the bobbin to be supplied and inserted.

According to the fourth aspect of the present invention, the positioning of the lower end of the core tube of the bobbin to be supplied and inserted is always constant and accurate with respect to the inner diameters of the core tubes of different bobbins. The gripping position of the core tube of the bobbin can be accurately positioned. Moreover, since the lower end of the core tube of the bobbin fits into the taper, the integration of the core tube of the bobbin and the receiving portion is enhanced,
Accurate positioning at the bobbin winding processing position is also easy.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional side view showing an entire bobbin supply device to which a bobbin holding peg according to the present invention is applied.

FIG. 2 is a side view showing a state in which the bobbin is supplied to the bobbin holding peg according to the embodiment of the present invention.

FIG. 3 is a side view showing a state in which the bobbin holding peg of FIG. 2 is swiveling and gripping the core tube of the bobbin.

FIG. 4 is a sectional view showing a conventional bobbin holding peg.

[Explanation of symbols]

 2 peg 4 bobbin (bobbin core tube) 30 fixed shaft (link mechanism) 31 fixed shaft (link mechanism) 32 lever (link mechanism) 34 shaft (link mechanism) 34e pin (link mechanism) 35 gripping member (link mechanism) 35a taper receiving part 35c gripping piece 35e gripping piece

Claims (4)

[Claims] 1. A bobbin holding peg used for a winder for unwinding a bobbin thread and winding the bobbin on a winding tube, wherein a lower end portion of the core tube of the inserted bobbin is used in a bobbin holding peg for inserting and holding the core tube of the bobbin. A bobbin holding peg, comprising: a receiving portion that abuts with the holding portion; and a plurality of holding pieces that press-contact the inner peripheral surface of the core tube in a radial equiangular direction. 2. The plurality of gripping pieces are provided such that three or more gripping pieces are provided so as to press and contact at least three positions of the inner peripheral surface of the core tube of the bobbin in a radial equiangular direction. Bobbin holding peg. 3. A gripping piece is provided with a shaft for guiding the core tube, the shaft being connected to a link mechanism, and the gripping piece gripping and releasing the core tube by the reciprocating motion of the shaft by the link mechanism. The bobbin holding peg according to claim 1. 4. The bobbin according to claim 1 or 3, wherein the receiving portion with which the lower end portion of the inserted core tube abuts is formed on a taper surface that expands in the insertion direction. Holding peg.