JPH0578033A - Yarn winding method in automatic bobbin exchange time - Google Patents

Abstract

PURPOSE:To transfer a yarn to a normal winding tube position rapidly and securely, by grasping the yarn between a yarn feeding source and a waste roller, conveying it near a winding tube holder, cutting it, fitting it in a yarn guiding groove, holding it in a yarn grasping groove, and winding it to a winding tube. CONSTITUTION:By rotating a yarn guide 13, yarns Y running between a yarn feeding source X and a waste roller 5 are grasped. The yarns Y are distributed to stride on the end face of a tube holder 3, into the yarn guide 13 side from the yarn feeding source X, and the waste roller 5 side. Then the yarn guide 13 is moved further, the yarn between the waste roller 5 and the yarn guide 13 is tensed by rotating a winding tube 2, and cut automatically. On the other hand, the yarn at the feeding source X side is held in a yarn grasping groove 2b whose width is narrower than a yarn guide groove 2a formed on the peripheral surface of the winding tube 2, through the guide groove 2a, and it is wound to the winding tube 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface friction drive type winding device, in which a full package and a winding tube of an empty bobbin are automatically replaced with each other and a yarn which has once been transferred to a waist roller is normally wound. The method of transferring to an empty bobbin and winding.

[0002]

2. Description of the Related Art The applicant has previously arranged a waist roller in front of a winding device, and when replacing the bobbin, an empty bobbin that holds the yarn once transferred to the waist roller in the winding device. Japanese Patent Publication No. 2-27261 has been proposed as a method of winding the film. In this method, a yarn guide guide rotatably arranged in the lower front part of the winding device is rotated to capture the yarn running between the yarn supply source and the waist roller, and to wind the yarn. The yarn is carried to the vicinity of the take-up tube holder, and the caught yarn is grasped between two points which are distributed from the yarn supply source to the yarn guide and the waist roller side so as to straddle the outer peripheral edge of the end face of the tube holder, and then the yarn is caught. The yarn guide is further rotated to the lower rear part of the winding device, and the yarn on the yarn supply source side is slid along the inclined surface of the outer circumference of the winding tube holder to wind the yarn on the winding tube holder. It is pressed into the gap between the take-up tubes and pinched, and then the take-up tube is rotated to
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 winding tube.

[0003]

However, in this method, since the waist roller can be arranged in front of the winding device, the work of removing the yarns wound around the waist roller can be made extremely easy and the operability is good. However, on the other hand, slide the yarn drawn from the yarn supply source along the inclined surface of the outer circumference of the winding tube holder, and then insert it into the gap between the winding tube holder and the winding tube. Since the take-up tube is wound around the take-up tube, if the take-up tube is, for example, a paper tube, the parallelism between the take-up tube holder and the end surface of this paper tube is poor, so the degree of close contact between the two is poor. This causes a phenomenon that the yarn is difficult to be gripped with certainty, and in particular, when the yarn is an ultrafine fiber of a new synthetic fiber, there is a drawback that a winding error is caused.

[0004]

A waist roller in which a yarn drawn from a yarn supply source and wound on a winding device is once disposed between the winding device and the yarn supply source when the bobbin is replaced. After the bobbin has been replaced, when winding the yarn from the waist roller to the take-up tube that is clamped by the take-up tube holder of the take-up device again, first use the yarn guide to guide the yarn supply source and the waist. The yarn running between the rollers is captured and carried to the vicinity of the take-up tube holder. Next, the captured yarn is distributed and grasped from the yarn supply source to the yarn guide side Y1 and the yarn guide and waist roller side Y2 so as to straddle the outer peripheral edge of the end surface of the tube holder. Then, by moving the yarn guide guide and automatically rotating the winding tube, the yarn Y2 between the waist roller and the yarn guide guide is automatically cut, and the yarn Y1 on the yarn supply source side is wound on the outer surface of the winding tube. It is characterized in that it is sandwiched by a thread gripping groove having a groove narrower than the groove width of the thread guide groove through the threaded guide groove which is bored, and is wound around a winding tube.

[0005]

[Operation] When the yarn drawn from the yarn supply source comes into contact with the outer surface of the winding tube, the yarn vibrates slightly in the width direction with respect to the running direction. ) It is not always easy to make a line contact at a right angle, and the details are that it runs at a slight angle in the circumferential direction. Therefore, the yarn guide groove formed on the outer peripheral surface in the circumferential direction of the winding tube is first engaged with the yarn guide to restrict the width direction, and subsequently formed to be narrower than the width of the yarn guide groove. The yarn is guided to the provided yarn gripping groove, and the yarn is reliably held in the gripping groove.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an apparatus for carrying out the method of the present invention will be described with reference to the drawings. In FIGS. 1, 2, 5, 6 and 7, reference numeral 1 is a take-up of a surface friction drive type winding device. The rollers 2 are take-up tubes which are empty bobbins, and thread guide grooves 2a and thread holding grooves 2b are formed on the outer peripheral surface of the end of the take-up tube. More specifically, the yarn guide groove 2a and the yarn gripping groove 2b formed on the outer peripheral surface of the winding tube will be described in detail. The cross section of the yarn guide groove 2a has a wide opening at the inlet as shown in FIG. 7A. Next, the groove is formed so as to become gradually narrower, and the length of this groove is shown in FIG.
L1 is about 10 to 30% of the outer circumference, and the groove width is 2 mm
It is preferable that the groove depth is about 3 mm and the groove depth is 3 mm or more. On the other hand, as shown in FIG. 7B, the shape of the yarn gripping groove 2b is preferably a slit shape from the entrance to the back for gripping the yarn, and the groove width is narrower than the yarn guide groove 2a and is 2 mm to 1 mm.
It is formed to about mm. In this case, if a groove is formed on the outer peripheral surface of the winding tube just around the entire circumference, for example, when the yarn is a processed yarn of synthetic fiber, the filament is caught in the groove and fluff occurs, which is not preferable. And
It is preferable that the length L in FIG. 6 is less than or equal to the semicircular length, and the groove is in the circumferential direction of the winding tube. It is necessary that the grip grooves 2b are formed in the order of narrower than the width of 2a. 3 is a take-up tube holder attached to the cradle 4, and 5 is a waist roller having a cutout portion 5a and a protrusion 5b for engaging a yarn on its side surface, which stores a temporary yarn when the bobbin is replaced. Is disposed in front of the winding tube, is rotatably supported by the arm 7 attached to the bracket 6, and is pressed against the drive roller 8 by the spring 10. The drive roller 8 is normally stopped during winding, and only when the automatic doffing work is performed, the shaft 9
Is rotated by being driven and imparts rotational force to the waist roller 5. Reference numeral 11 denotes a swing arm rotatably supported by a shaft 12 arranged at a lower front portion of the winding device, and a yarn guide guide 13 is provided at a tip of the swing arm.
Is attached. The yarn guide guide 13 is shown in FIG.
And the crossing portion 13c and the first capturing portion 13 as shown in FIG.
a and a second catching portion 13b, and the tip end portion is formed to be bent so that the yarn is distributed between two points of the first catching portion and the second catching portion and held. 16 is the waist roller 5
1 is a transfer device for transferring the yarns, which is provided with a rod 17 that reciprocates left and right in FIG. 1, a guide holder 18 fixed to the rod, and a guide 19 attached to the holder 18. There is. 20 is a traverse device, 21 is a traverse guide, and Y is a yarn supply source.

An example of the apparatus for carrying out the present invention is constructed as described above, and the yarn supply source X is now being wound during the winding of the yarn.
The yarn Y pulled out further passes through the rod 17 of the transfer device 16 and the traverse guide 21 of the traverse device 20,
It is wound on a winding tube 2 which is an empty bobbin rotated by a take-up roller 1. At this time, the yarn guide guide 13 attached to the swing arm 11
Stands by at the lower front part of the waist roller 5 as shown in FIG. When the winding is now progressing and the package is full, the shaft 9 is rotated by the doffing operation command signal, and the waist roller 5 is driven via the drive roll 8.

Then, the transfer device 16 is moved to the left side in FIG. 1, whereby the winding yarn Y is moved to the vicinity of the waist roller 5 by the guide 19, and the cutout portion 5a and the projection 5b of the roller are made. And the yarn Y is wound around the waist roller 5. Then, after the full package held by the tube holder 3 is automatically replaced by the empty winding tube, the swing arm 11 is rotated clockwise in FIG. 2 by the rotation of the shaft 12. By the rotation of the swing arm 11, the yarn guide guide 13
Captures the yarn Y drawn from the yarn supply source X between the guide 19 of the yarn transfer device 16 and the waist roller 5 and attaches the yarn Y to the empty bobbin 2 as the swing arm 11 rotates. It is carried to a position near the wound tube holder 3. Here, when the swing arm 11 is rotated, the traveling yarn Y rides on the pin 15 attached to the side surface of the arm, and the yarn Y between the yarn guide guide 13 and the guide 19 of the transfer device 16 is the waist. It prevents the roller 5 from coming into contact with and winding.
When this yarn guide guide 13 is carried to the vicinity of the take-up tube holder, the yarn Y first engages with the intersecting portion 13c of the guide 13 as shown in FIG. 3, and then as shown in FIG. A first capturing portion 13a of the guide 13 from the source X,
It is sorted and held between two points of the second capturing portion 13b. When the swing arm 11 further rotates from the state of FIG. 4 and the guide guide 13 rotates beyond the rotation axis of the winding tube 2 to the lower rear part of the winding device, as shown in FIG. The yarn supply source X and the first catching portion 13a side of the yarn guide guide 13 (hereinafter referred to as the yarn supplying side) so as to straddle the outer peripheral edge of the end face of the holder 3, the second catching portion 13b and the waist roller 5 side. (It will be referred to as the waist roller side below). At this time, the yarn supply side yarn Y1
Is clamped in the yarn gripping groove 2b via the yarn guide groove 2a formed on the outer peripheral surface of the winding tube 2 gripped by the winding tube holder 3.

In detail, the yarn Y1 first fits in the yarn guide groove 2a and then moves to the yarn holding groove 2b. At this time, in the yarn Y1 between the yarn supply source X and the winding tube 2, if the groove formed in the outer peripheral surface of the winding tube is too long, the yarn Y1 will be caught before it is fitted into the yarn gripping groove 2b. A phenomenon occurs in which the yarn does not fit into the yarn holding groove 2b, which is not preferable. Therefore, the peripheral length L of the groove is preferably about 20% to 50% of the outer peripheral length according to the experimental results.
By the way, when the yarn comes into contact with the outer peripheral surface of the winding tube 2, there are the following three ways. That is, the first case is when the yarn Y1 is engaged with the guide groove 2a, and the case where it is engaged with the grip groove 2b, and is brought into contact with the flat outer peripheral surface. Of these, the flat case is most preferable, because the yarn is smoothly sandwiched from the outer peripheral surface to the grip groove 2b via the guide groove 2a. On the other hand, in the case of, the thread is the grip groove 2
The case where it is not gripped by b occurs. The reason for this is that since the yarn vibrates slightly during running, it is not always easy to make a line contact at right angles to the axial direction (width direction) of the take-up tube when it comes into contact with the outer surface of the take-up tube. This is because the vehicle is traveling in the state of, and if it suddenly engages with the grip groove 2a and the grip groove 2b having a narrow width, the grip groove 2a and the grip groove 2b do not easily enter the inside. By the way, at this time, in the yarn Y2 on the waist roller 5 side, the waist roller 5 rotates clockwise as shown by an arrow in FIG. 2, whereas the winding tube 2 moves counterclockwise as shown by an arrow. Because it's turning, I'm nervous and tense. On the other hand, for the yarn supply source side yarn Y1, the winding tube 2 rotates in the direction of loosening for a moment, but this looseness is not cut even if the yarn has a small fineness. It will also be wound around the winding tube 2. Until the take-up tube 2 makes a half turn, the direction of rotation of the take-up tube 2 becomes a direction in which the yarn Y1 loosens, but after that, it becomes the pulling direction, and after the yarn is drawn from the yarn supply source X. The yarn is wound around the winding tube 2. Thus, the yarn Y once transferred to the waist roller 5
Will be transferred to the take-up tube 2. Thereafter, the yarn transfer device 16 moves to the right side in FIG. 1, so that the yarn Y moves from the yarn supply source X to the right side, and the traverse guide 21 of the traverse device 21 traverses normally. The yarn is wound around the normal empty tube 2 at the winding position.

[0010]

As described above, according to the present invention, the yarn guide guide rotatably arranged in the lower front portion of the winding device is rotated so that the yarn guide is run between the yarn supply source and the waist roller. The yarns are caught from the yarn supply source, the yarn guide side, the yarn guide and the waist so that the yarns are carried to the vicinity of the winding tube holder and the captured yarns straddle the outer peripheral edge of the end face of the tube holder. Grasp between the two points that are distributed to the roller side, then rotate the yarn guide guide further to the lower rear part of the winding device, and cut the yarn between the waist roller and the yarn guide guide by rotating the winding tube. As well as
Since the yarn on the yarn supply side is inserted into the yarn guide groove formed on the outer peripheral surface of the winding tube and then clamped in the yarn gripping groove so that it can be wound around the winding tube. Compared with the conventional winding method, 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, the type of winding tube, and the number of rotations of the winding tube. The effect of changing.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an example of an apparatus for carrying out the method of the present invention.

FIG. 2 is a side view of a main part of FIG.

FIG. 3 is an explanatory view showing an operating state of a yarn guide guide.

FIG. 4 is an explanatory diagram showing an operating state of a yarn guide guide.

FIG. 5 is an explanatory diagram showing a relationship between a yarn guide guide and a winding tube.

FIG. 6 is a perspective view of a winding tube.

FIG. 7 is a cross-sectional view of essential parts of a yarn guide groove and a yarn gripping groove formed on the surface of the winding tube.

[Explanation of symbols]

 2 Winding tube 2a Thread guide groove 2b Thread grip groove 3 Tube holder 5 Waist roller 13 Thread guide guide X Thread supply source Y Thread Y1 Thread supply source Thread Y2 Waist roller side thread

Claims (2)

[Claims] 1. A yarn roller drawn out from a yarn supply source and wound on a winding device is temporarily transferred to a waist roller arranged between the winding device and the yarn supply source when the bobbin is replaced. After the bobbin has been replaced, when winding the yarn from the waist roller to the winding tube sandwiched by the winding tube holder of the winding device again, use the yarn guide guide to
The yarn running between the yarn supply source and the waist roller is captured, conveyed to the vicinity of the take-up tube holder, and the captured yarn is straddled over the outer peripheral edge of the end face of the tube holder. The yarn guide side Y1 and the yarn guide side and the waist roller side Y2 are distributed and gripped from the yarn supply source, and then the yarn guide guide is further moved, and the waist tube and the yarn guide are rotated by the rotation of the winding tube. The yarn Y2 between the guides is automatically cut, and the yarn Y1 on the yarn supply source side is provided with a groove narrower than the groove width of the yarn gripping groove through a yarn guide groove formed on the outer peripheral surface of the winding tube. A yarn winding method at the time of automatic bobbin exchange, wherein the yarn is wound around a winding tube by being held in a yarn holding groove. 2. The winding tube has a yarn guide groove having a narrow groove on the outer circumferential surface in the circumferential direction, and a yarn gripping groove having a groove narrower than the width of the yarn guide groove. And the total length of the two grooves is approximately 20% to 50% of the outer peripheral length of the winding tube. Method of winding a yarn at the time.