JPH0638043Y2 - Bobbin holder - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a bobbin holder used in a yarn winding device equipped with a bunch winding device for winding a yarn on a bobbin in a spinning machine, a winder, or the like.

[Prior Art] In a yarn winding device that winds a yarn around a package, a slab catcher, a slack tube, a winding drum, a cradle that supports a winding bobbin, and the like are provided as one unit,
A plurality of units are provided in parallel, and an automatic doffing device and an automatic yarn joining device reciprocate on a guide provided through the plurality of units, and when a slab or the like is found in the winding yarn, remove it and perform yarn joining. When the package was full, the full bobbin was removed from the cradle and a new empty bobbin was supplied to the cradle.

In the above, when taking out the fully wound bobbin, a new empty paper tube must be set in the cradle, but it is necessary to previously wind a small amount of thread called a seed thread around the empty paper tube. This is a new paper tube set in the cradle,
For example, when the yarn on the spinning side of the spinning machine is wound first, the yarn end on the spinning side cannot be wound directly on the new paper tube. After winding the thread separately with a starter winder and setting the new paper tube in the cradle, pull out the thread end of the seed thread wound around the new paper tube and the spinning side thread end with a suction mouth, etc. After leading to the device and splicing the yarn, the new paper tube is rotated to start winding.

When the yarn splicing is performed by the above steps, the seed yarn must be wound around the new paper tube, so a starter winder for that is required, and the step of winding the seed yarn by the starter winder is required in advance. is there.

Then, the delivery side yarn end is sucked and grasped by the yarn end suction member and guided to the front of the new paper tube supported by the cradle, and the delivery side yarn end is held by the thread hooking lever to hold the new paper tube bobbin holder. The thread of the bunch winding portion is guided by the traverser and traverses to form a winding ball by guiding the thread to the hook provided on the A yarn winding device has been proposed.

However, when the thread is wound around the bobbin for the first time, the thread may not be smoothly hooked on the bobbin, and the cut thread end may be swung around even after the thread is hooked, and may be caught by the surrounding members. It was also a cause of disorder in the bunch winding part.

[Problems to be solved by the device]

In view of the above points, the present invention is a bobbin holder in which the thread is well caught when the thread end sucked and held by the suction nozzle is automatically wound around the bobbin, and the cut thread end is not swung after the thread is hooked. Aim to get.

[Means for Solving the Problems]

In a bobbin holder that winds a thread between the suction nozzle and the suction nozzle around the bobbin end, the outer circumference of the bobbin holder is formed to be larger than the outer circumference of the bobbin, and a hook is formed on a part of the bobbin holder. Is provided on the inner circumference side of the bobbin holder, and a circumferential groove is formed on the inner diameter side of the thread holding contact surface between the inner circumference of the bobbin holder and the bobbin end surface, which improves thread catching and thread end deflection. It prevents the surroundings.

[Action]

The yarn from the yarn supply side to the suction nozzle is wound on the contact surface of the bobbin holder by the device for winding the yarn on the contact surface. At that time, the thread is guided to the guide surface of the hook and also to the outer peripheral edge of the bobbin holder. Further, the cut yarn end is drawn into the circumferential groove of the bobbin holder.

〔Example〕

 An embodiment of the device of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the yarn 2 sent from the delivery roller 1 is wound up by the winding device 3. The winding device 3 includes cradle arms 6 and 6 provided with bobbin holders 5 and 5 for holding the bobbin 4, a drive drum 7 for transmitting rotation to the bobbin in contact with the bobbin 4, and a traverse device 8. Between the delivery roller 1 and the winding device 3, a slab catcher 9 and a suction nozzle 10 for sucking the yarn end on the delivery side and guiding it to the winding device 3 are provided.

A yarn end guide member 11 for guiding and winding the yarn 2 on the delivery side around the bobbin 4 is provided.
Comprises a yarn pulling member 12, a yarn holding member 13, and a vertical movement guide member 14. The thread pulling member 12 has a thread locking hook 15 at the tip,
The thread 2 is locked to the hook 15 and intersects with the thread 2 extending between the slab catcher 9 and the winding device 3 between the delivery side and the suction port of the suction nozzle 10 descending toward the bobbin 4. Draw a locus and swing horizontally. The thread holding member is located at the leftward end portion of the thread pulling member 12 in FIG. 1, that is, near the swing end where the thread pulling member is separated from the locus.
Provide 13. The thread holding member 13 is formed by bending a plate material into a U shape and forming a thread locking claw 16 at an end thereof. The vertical movement guide member 14 is attached to the tip of the vertical turning arm 17 for turning the tip in the vertical direction.
It has a vertical movement guide plate 18. The vertical movement guide plate 18
The innermost part of the V-shaped cut is a thread locking cut 19, and the inside of a hook formed in a part of the peripheral edge of the V-shape is a hook-shaped cutting blade 20. The vertical guide plate 18 is a vertical swing arm.
The plate surface and the side surface of the bobbin holder 5 are kept parallel when 17 is swung downward. Vertical swivel arm 17
Rod of air cylinder 22 supported by support arm 21 at the tip of
The inverted L-shaped bent portion 24 of the head is supported by the head 23 and hangs down, and the vertical movement guide plate 18 can be moved up and down by being guided by the long hole 29 and the guide pin 30 by the operation of the air cylinder 22. The vertical swivel arm 17 is provided with a fixed guide 26 in parallel with the vertical movement guide plate 18, and a tip of the fixed guide 26 is used as a thread guide piece 27.

On the other hand, as shown in FIGS. 3 to 6, the bobbin holder 5
The outer diameter of the bobbin holder 5 is set to be larger than the outer diameter of the bobbin 4 by a.
Provide 30. The hook 30 has a thread hooking surface 31 inclined forward in the rotation direction A of the bobbin, and a guide surface 32 for guiding the thread between the thread hooking surface 31 and the guide groove 28 of the thread guide piece 27. . Inner surface outer peripheral portion 33 of bobbin holder 5 and bobbin 4
At the contact portion with the end face of the thread, the thread can be pulled in, but the thread is in contact with the end surface with a pressure such that the thread does not easily come off. Further, a circumferential groove 34 is formed on the inner peripheral surface 33 of the bobbin holder 5 near the axis of the contact surface with the bobbin.

In the above structure, when the yarn 2 is newly wound around the bobbin 4, the yarn end on the sending side is sucked by the suction nozzle 10 and drawn out as shown by the solid line in FIG. There, thread pulling member
12 swings horizontally from the right side to the left side in FIG. 1, locks the thread 2 on the thread locking hook 15 at the tip thereof, and reaches the thread holding member 13 located at the swing end at the left end. To guide the yarn 2 to the yarn locking claw 16 of the yarn holding member 13 (the state shown by the chain line 2-1 in FIG. 1).

Next, the vertical turning arm 17 swings downward to lock the thread 2 extending between the thread locking claw 16 and the suction nozzle 10 into the thread locking notch 19 of the vertical movement guide plate 18. And descends (state shown by a chain line 2-2 in FIG. 1). The thread locking notch 19 and the hook-shaped cutting blade 20 are located on the side surface of the bobbin holder 5. By this series of movements, the thread 2 is released from the thread locking claw 16 of the thread holding member 13 and extends between the thread locking notch 19 of the vertical movement guide plate 18 and the suction nozzle 10.

When the air cylinder 22 is actuated and the vertical movement guide plate 18 is lowered, the yarn 2 at the above position comes close to the peripheral edge of the bobbin holder 5, and the bobbin 4 that rotates in response to the rotation of the drive drum 7 rotates. The thread hooking surface 31 of the hook 30 provided on the bobbin holder 5 locks the thread extending between the thread locking notch 19 and the slab catcher 9. Then, while the bobbin 4 and the bobbin holder 5 are rotated in the direction of the arrow A, the hook 30 is rotated to the vicinity of the position B in FIG. It is wound around the pressure contact portion between the bobbin holder 5 and the end surface of the bobbin 4 while being guided by the outer peripheral edge formed to have a large diameter. After that, this thread is drawn into the gap between the inner peripheral surface 33 of the bobbin holder 5 and the end surface of the bobbin 4, and the circumferential groove
34 pulled in. Bobbin 4 rotates further and hook 30
Is rotated to the vicinity of position C in the figure, the yarn is cut because it is pressed against the blade surface of the hook-shaped cutting blade 20, and the remaining yarn after the cutting is sucked into the suction nozzle 10 and removed. Also, while the bobbin 4 is rotated and the thread is wound appropriately, the thread between the cutting blade 20 and the hook 30 is dragged into the circumferential groove 34. Thereafter, the yarn guided in the fixed state by the yarn guide piece 27 is delivered to the traverse device 8 and thereafter wound around the bobbin 4 while being traversed by the traverse device 8.

Next, the air cylinder 22 returns to the old position, the vertical guide plate 18 also rises, and the vertical swing arm 17 also swings upward and returns to the original position.

[Effect of device]

Since the bobbin holder of the present invention is constructed as described above, the paper tube, in which the seed thread is wound by another winder, is supplied to the unit like the conventional one, and the paper tube and the thread on the sending side are spliced and wound. Not only is it possible to omit the step of winding the seed yarn with a separate winder, but the hook provided on the outer peripheral edge of the bobbin holder has a thread hooking surface and a guide surface. With a larger diameter, even if the end surface of the bobbin is damaged, the thread is reliably guided to the pressure contact portion of the end surface between the bobbin holder and the bobbin without touching it. Further, since the circumferential groove 34 is formed on the outer peripheral surface of the inner surface of the bobbin holder, the cut thread end portion is drawn into the circumferential groove 34, and the thread end portion is swung around as in the conventional case, so that the peripheral member is surrounded. Since it is not caught, and the bunch winding portion is not disturbed, reliable bunch winding can be performed.

[Brief description of drawings]

FIG. 1 is an overall schematic view of a bunch winding device equipped with the bobbin holder of the present invention, FIG. 2 is a perspective view of a vertical movement guide member portion in the bunch winding device of FIG. 1, and FIG. 3 is a hook in the bobbin holder of the present invention. Fig. 4 is a plan view showing a state in which a thread is hooked on the thread, Fig. 4 is a side view of the same, Fig. 5 is a longitudinal sectional view thereof,
The drawing is a side view for explaining the movement of the yarn according to the rotating state of the bobbin holder. 1 ... Delivery roller, 3 ... Winding device, 4 ... Bobbin, 5 ... Bobbin holder, 10 ... Suction nozzle, 11 ... Thread end guide member, 12 ... Thread gathering member, 13 ... Thread holding member, 30 ... Hook, 31 ... Thread hook Surface, 32 ... Guide surface, 33 ... Inner side outer circumference, 34 ... Circumferential groove

Claims (1)

[Scope of utility model registration request] 1. A bobbin holder for winding a thread between a suction nozzle and a suction nozzle on a bobbin end, wherein an outer circumference of the bobbin holder is formed larger than an outer circumference of the bobbin, and a hook is formed on a part of an outer peripheral edge of the bobbin holder. A bobbin holder characterized in that a guide surface following the thread hooking surface is provided on the hook on the inner circumference side of the bobbin holder, and a circumferential groove is formed on the inner diameter side of the thread holding contact surface between the inner circumference of the bobbin holder and the bobbin end surface.