JPH0227261B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a surface friction drive type winding device to automatically exchange a full bobbin and an empty bobbin, and then transfer the yarn, which has been transferred to the waist roller, to the empty bobbin at the normal winding position. This relates to a method of winding the winding instead.

The applicant proposed Japanese Patent Application Laid-Open No. 30945/1985 as a method for immediately transferring the yarn once transferred to the waist roller to an empty bobbin at the normal winding position and winding the yarn. In this method, the first yarn guiding guide captures the yarn traveling between the yarn supply source and the waist roller, and the captured yarn is conveyed to the vicinity of the yarn engaging portion of the winding tube holder. At the same time, the yarn is bent in a direction perpendicular to the running direction of the yarn by the second yarn guide, and the yarn under tension is bent between the two points of the first and second guides into the tube. By engaging with the yarn engaging portion of the holder, the yarn is wound around the empty bobbin. However, this method does have the advantage that the waist roller can be placed in front of the winding device, so the work of removing the yarns wrapped around the waist roller can be done extremely easily, and that it is easy to operate. The yarn under tension between the two guides was brought into engagement with the yarn engaging portion of the take-up tube holder. When rotating at high speed, 2
The tension between the two guide guides is sometimes broken by the impact force when the tube holder engages with the tube holder, resulting in a problem of winding errors.

SUMMARY OF THE INVENTION Therefore, the present invention aims to solve the above-mentioned drawbacks and provide a yarn winding method that can quickly and reliably transfer the yarn from the waist roller to the winding tube regardless of the fineness of the yarn. , the present invention rotates a yarn guide rotatably disposed at the front lower part of the winding device to capture the yarn traveling between the yarn supply source and the waist roller. The yarn is conveyed to the vicinity of the take-up tube holder, and the captured yarn is distributed and gripped from the yarn supply source to the yarn guide side and the yarn guide and waist roller side so as to straddle the outer periphery of the end surface of the tube holder. Next, the yarn guide is further rotated to the rear lower part of the winding device, and the yarn Y ₁ on the yarn supply source side is slid along the sloped surface of the outer circumference of the winding tube holder, and the yarn is removed from the yarn winding tube. Press it into the gap between the holders, and then rotate the take-up tube to
This is characterized in that the yarn _Y2 between the waist roller and the yarn guide is cut, and the yarn _Y1 on the yarn supply source side is wound around a winding tube.

Next, an example of an apparatus for carrying out the method of the present invention will be explained with reference to the drawings. In FIGS. 1, 2, and 5, 1 is a take-up roller of a surface friction drive type winding device; A winding tube 3, which is a bobbin, is a winding tube holder attached to a cradle 4, and the holder has a sloped surface 3a on its outer peripheral surface that is lowered toward the side that grips the winding tube, and a thread is attached to the side surface of the sloped surface 3a. It has a notch 3b that fits. 5 is a notch 5a on the side surface of which the thread engages;
and a protrusion 5b, and is a waist roller for temporarily storing yarn when replacing the bobbin. The roller is disposed in front of the winding tube and is rotatably supported by an arm 7 attached to a bracket 6. and is pressed against the drive roller 8 by a spring 10. The drive roller 8 normally stops during winding, and rotates only when the automatic doffing operation is performed by driving the shaft 9, thereby applying rotational force to the waist roller 5. Reference numeral 11 denotes a swing arm rotatably supported on a shaft 12 disposed at the front lower part of the winding device, and a yarn guide 13 is attached to the tip of the arm. As shown in FIGS. 3 and 4, the yarn guide 13 includes a crossing portion 13c, a first catching portion 13a,
and a second catching part 13b, and the yarn is caught in the first, second catching part 13b.
The distal end portion is formed to be bent so as to be distributed and gripped between two points of the second gripping portion. Reference numeral 16 denotes a transfer device for transferring the yarn to the waist roller 5, and in FIG. A guide 19 is provided.

Note that 20 is a traverse device, 21 is a traverse guide, and Y is a yarn supply source.

An example of an apparatus for carrying out the method of the present invention is constructed as described above, and during yarn winding, the yarn Y pulled out from the yarn supply source X passes through the rod 17 of the transfer device 16. , through a traverse guide 21 of a traversing device 20, and is wound onto a winding tube 2, which is an empty bobbin, which is rotated by a take-up roller 1.

At this time, the thread guide 13 attached to the swing arm 11 is waiting at the front lower part of the waist roller 5, as shown in FIG. As the winding progresses and the package becomes full, the shaft 9 rotates in response to the doffing operation command signal, and the waist roller 5 is driven via the drive roll 8.

Next, by moving the transfer device 16 to the left in FIG. 1, the winding yarn Y is moved to the vicinity of the waist roller 5 by the guide 19,
It engages with the notch 5a and protrusion 5b of the roller, is transferred, and the yarn Y is wound around the waist roller 5. After the full package gripped by the tube holder 3 is automatically replaced with an empty take-up tube, the swing arm 11 is rotated clockwise in FIG. 2 by rotation of the shaft 12. This rotation of the swing arm 11 causes the yarn guide 13 to
is pulled out from the yarn supply source X and transferred to the yarn transfer device 1
The yarn Y is caught between the guide 19 and the waist roller 5 of 6, and as the swing arm 11 rotates, the yarn Y is conveyed to a position near the winding tube holder 3 on which the empty bobbin 2 is attached. Here, when the swing arm 11 rotates, the traveling yarn Y rides on the pin 15 attached to the side surface of the arm, and the yarn guide guide 13
This prevents the yarn Y between the guide 19 of the transfer device 16 from coming into contact with the waist roller 5 and wrapping around it.

When the yarn guiding guide 13 is carried near the winding tube holder, the yarn Y first engages with the crossing portion 13c of the guide 13 as shown in FIG. The strips are distributed from the supply source X between two points of the guide 13, the first catching section 13a and the second catching section 13b, and are gripped. When the swing arm 11 further rotates from the state shown in FIG. 4 and the guide guide 13 rotates toward the rear lower part of the winding device beyond the rotation axis of the winding tube 2, the winding is started as shown in FIG. The yarn supply source X, the first catching part 13a side (hereinafter referred to as the yarn supply side) of the yarn guide 13, the second catching part 13b and the waist roller 5 are arranged so as to straddle the outer peripheral edge of the end surface of the tube holder 3. It will be in a state where it is exactly distributed to the side (hereinafter referred to as the waist roller side).
At this time, the yarn Y ₁ on the yarn supply source side contacts the inclined portion 3a of the winding tube holder 3, slides on this slope, and connects the winding tube holder 3 and the winding tube 2.
The yarn is caught in the gap between the ends of the At this time, the waist roller 5 side yarn _Y2 rotates clockwise as shown by the arrow in FIG. 2, while the winding tube 2 rotates counterclockwise as shown by the arrow. Because it's rotating, I get nervous and excited.

On the other hand, for yarn Y ₁ on the yarn supply source side, the direction of rotation of the winding tube 2 is such that it momentarily loosens, but even if the yarn has a small fineness, this loosening will not be cut. It is also possible to wind the winding tube 2 around the winding tube 2 without the winding. Until the take-up tube 2 rotates approximately half a turn, the direction of rotation of the take-up tube 2 is in the direction in which the yarn _Y1 is loosened, but after that, it is in the direction of tension, and the yarn is transferred from the yarn supply source X to the yarn Y1. After that, the yarn is wound into the winding tube 2. In this way, the yarn Y that was once transferred to the waist roller 5 is transferred to the winding tube 2. Thereafter, by moving the yarn transfer device 16 to the right in FIG. 1, the yarn Y is moved to the right from the yarn supply source The yarn is then wound onto the normal empty tube 2 at the normal winding position.

As described above, the present invention rotates the yarn guide which is rotatably disposed at the front lower part of the winding device.
The yarn running between the yarn supply source and the waist roller is captured and carried to the vicinity of the winding tube holder, and the captured yarn is then rolled so as to straddle the outer periphery of the end face of the tube holder. Grasp the yarn between the two points that distribute it from the supply source to the yarn guide side and the yarn guide and waist roller side, then rotate the yarn guide further to the rear lower part of the winding device, and then move the yarn guide to the yarn supply source side. The yarn is slid along the sloped surface of the outer circumference of the winding tube holder to press and sandwich the yarn into the gap between the winding tube holder and the winding tube, and then, by rotating the winding tube,
Since the yarn between the waist roller and the yarn guide is cut and the yarn on the yarn supply source side is wound around the take-up tube, compared to the conventional winding method, the yarn is The yarn is quickly and reliably transferred from the waist roller to the normal winding tube position without being affected by the fineness of the yarn or the number of rotations of the winding tube holder.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a side view of the main part of FIG.
3 to 5 are explanatory diagrams showing the operating state of the apparatus shown in FIG. 1. 2... Winding tube, 3... Tube holder, 3a
... Inclined surface, 5... Waist roller, 13... Yarn guide, X... Yarn supply source, Y... Yarn, Y ₁ ... Yarn on yarn supply source side, Y ₂ ... Yarn on waist roller side.

Claims (1)

[Claims] 1. When replacing the bobbin, the yarn that has been pulled out from the yarn supply source and wound on the winding device is transferred to the waist roller installed between the winding device and the yarn supply source, and the bobbin replacement is completed. After that, when winding the yarn from the waist roller again to the winding tube held by the winding tube holder of the winding device, the yarn guide guide runs between the yarn supply source and the waist roller. The captured yarn is transferred from the yarn supply source to the yarn guide side _Y1 and the yarn so as to straddle the outer periphery of the end surface of the tube holder. The yarn is distributed between the guide and the waist roller side Y ₂ and gripped, and then the yarn guide is further moved to slide the yarn Y ₁ on the yarn supply source side along the sloped surface of the outer periphery of the winding tube holder. After that, by rotating the take-up tube, the yarn _Y2 between the waist roller and the yarn guide is automatically cut, and the yarn _Y1 on the yarn supply source side is taken up into the gap between the winding tube holder and the winding tube. A method for winding yarn during automatic bobbin exchange, characterized in that the yarn is inserted into a winding tube and wound around a winding tube.