JP2013203489A - Unwinding device of yarn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent occurrence of yarn cut by making the yarn unwindable at a constant speed and stably, and to solve the conventional problems for setting work of a yarn winding material.SOLUTION: An unwinding device of yarn includes a raw material support table 3 for supporting a yarn winding material 2 formed by winding yarn 2b around a winding core 2a in a state of standing to support one end side of the winding core 2a, and a roundably provided flier 4 around the yarn winding material 2 with a core center of the yarn winding material 2 supported on the raw material support table 3 as a rotation axis. The flier 4 is provided with a projection guide 17 projecting the yarn 2b unwound from the yarn winding material 2, after drawing out in the radial direction of the yarn winding material 2, in the direction of an elevation angle toward right above the yarn winding material 2.

Description

  The present invention relates to a yarn unwinding device.

  The yarn is unwound from a state in which the yarn is wound around the core formed in a straight cylindrical shape (referred to as cheese or the like, but referred to as “bobbin winding” in this specification). As a device for unwinding), conventionally, the bobbin raw material is pierced and held by a horizontal support, and the yarn is guided by an L-shaped lever provided so as to circulate along the outer periphery of the bobbin raw material. There has been proposed a device for unwinding toward a guide guide provided in (see Patent Document 1).

In this known unwinding device, the bobbin raw material is pierced and held by a horizontal support (hereinafter, this holding method is referred to as “horizontal placement”), whereby the yarn raw material is diametrically outward. To be able to pull out.
And if this horizontal placement system is adopted, the problem associated with the traditional unwinding method (see FIG. 2 of Patent Document 1) for drawing the yarn along the core axis direction of the bobbin material (winded on the bobbin material) It is explained that the phenomenon in which the yarn that is unwound and the yarn to be unwound are rubbed and caught when they are separated to cause a yarn breakage).

  Even when the bobbin raw material is held upright so as to support one end side of the core (hereinafter, this holding method is referred to as “longitudinal placement”), along the core axis direction of the bobbin raw material (upward F) Since the yarn was pulled out, the yarn breakage problem occurred for the same reason as described above, and it is pointed out that the unraveling device disclosed in Patent Document 1 can also solve this problem.

Japanese Patent Laid-Open No. 10-203726

In the unraveling device disclosed in Patent Document 1, the yarn is bent downward between the L-shaped lever and the guide guide out of the yarn guided from the horizontally wound bobbin material to the guide guide via the L-shaped lever. The phenomenon that hangs down occurs. For this reason, when the downwardly curved yarn passes above the horizontally placed bobbin raw material, it may come into contact with the bobbin raw material.
Also, of the L-shaped lever orbit (circular orbit), the peripheral speed decelerates in the region against gravity (180 ° from bottom dead center to top dead center) with the vertical line passing through the rotation center of rotation as the boundary. On the contrary, in the area following the gravity (180 ° from the top dead center toward the bottom dead center), the peripheral speed shows an acceleration tendency, and the speed change occurs.

  In other words, since the circumferential speed of the L-shaped lever is uneven in speed during one rotation, this speed unevenness also causes a slow pulsation in the yarn unwinding speed. In addition, the balloon generated by the yarn to be unwound is not concentric with the bobbin raw material, but has a distorted ellipse shape that approaches (in some cases contacts) or separates from the bobbin raw material. From these facts, it became extremely unstable yarn feeding state, and when used as a raw material table of a knitting machine, steps and spots were generated in the knitted fabric, and in severe cases, thread breakage was frequently caused .

In order to improve the production efficiency of the bobbin winding material, the amount of winding is increased. Therefore, the preparation work in which the material having a considerable weight is inserted sideways with respect to the horizontal support has the problem that the work is troublesome and it becomes heavy labor. It was.
In particular, since the filament yarn has no fluff, it has the property that the yarn breaks apart (unwinds) from the outer peripheral surface of the bobbin raw material. It was of increasing severity.

  The present invention has been made in view of the above circumstances, and even if the yarn has such a characteristic that it falls apart from the outer peripheral surface of the vertically placed bobbin raw material, the yarn can be stably fed at a constant speed. An object of the present invention is to provide a yarn unwinding device that can prevent unraveling of yarn breakage and the like, and that can solve the conventional problems in the setting operation of the bobbin winding material.

In order to achieve the above object, the present invention has taken the following measures.
That is, in the yarn unwinding device according to the present invention, a raw material support base that supports a bobbin raw material in which a yarn is wound around a core in a standing state so as to support one end side of the core, and the raw material support base A flyer provided around the pincushion raw material so as to be able to circulate around the pincushion raw material with the core center of the pincushion raw material supported on the rotation axis as the rotation center. It is characterized in that an exit guide is provided for emitting the pincushion raw material radially outward and then emitting the pincushion raw material in an elevation angle direction directly above the pincushion raw material.

In the flyer, an incident guide provided in an arrangement facing the outer peripheral surface of the pincushion raw material and passing the yarn unwound from the pincushion raw material to the outer surface side of the fryer, and an outer surface side of the fryer from the incident guide An exit guide that allows the thread that has exited to pass to the inner surface side of the fryer above the entrance guide may be provided.
Temporary brake means is provided between at least one place in the orbit around which the flyer circulates and the flyer so as to generate resistance in the flyer's orbiting operation and stop and hold the fryer. Is preferred.

The temporary brake means may be constituted by a combination of a magnet and a magnetic material attracted to the magnet.
It is preferable that the incident guide of the flyer is provided at a position lower than the longitudinal central portion on the outer peripheral surface of the bobbin raw material.
It is preferable that the flyer has a side piece portion that allows a yarn passing from the bobbin material supported by the material support to the incident guide to be incident on an outer peripheral surface of the bobbin material.

The flyer has an upper piece portion that emits the yarn that has entered the inner surface of the fryer from the emission guide in an elevation direction directed directly above the spool material supported by the material support base. Is preferred.
The raw material support base is preferably formed to have a diameter larger than that of the bobbin raw material, and a buffer layer that can be compressed by supporting the bobbin raw material is provided on the top surface of the base.

  The yarn unwinding device according to the present invention is capable of stably unwinding a yarn at a constant speed, even if it is a yarn that has a characteristic of falling apart from the outer peripheral surface of a vertically placed spool material. Yes, yarn breakage and the like can be prevented from occurring. In addition, the conventional problem of the preparation of the bobbin material can be solved.

1 is a side sectional view showing a yarn unwinding device according to the present invention. 1 is a perspective view showing a yarn unwinding device according to the present invention. It is the side view which showed the example of installation of the unwinding apparatus typically. It is the sectional side view which showed 2nd Embodiment of the yarn unwinding apparatus which concerns on this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 and 2 show a yarn unwinding device 1 according to the present invention. FIG. 3 shows an installation example of the unwinding device 1. The unwinding device 1 is for unwinding (unwinding) a yarn 2b from a bobbin raw material 2 formed by winding a yarn 2b around a winding core 2a, and is a system for supporting the bobbin raw material 2 in a vertical position ( A method of standing up to support one end side of the winding core 2a).

  Note that only one unit of the unwinding device 1 may be installed alone, but in many cases, as shown in FIG. Set up side by side. At the installation position of each unwinding device 1, a yarn guide G for guiding the unwound yarn 2b to a downstream step (for example, a step of rewinding to a small bobbin) at a higher position than the unwinding device 1. Is provided. The bobbin raw material 2 is installed so that its core center is directly below the yarn guide G.

That is, the unwinding device 1 according to the present invention is a type that unwinds the yarn 2b toward the upper yarn guide G along the core axis direction of the bobbin raw material 2.
As shown in FIG. 1, the unwinding device 1 includes a raw material support base 3 that supports the bobbin raw material 2 in a vertical position, and a fryer 4 that is provided so as to be able to go around the raw material support base 3. have.

  The raw material support 3 is formed in a disk shape having a larger diameter than the maximum outer diameter of the bobbin raw material 2 (the outer diameter when the yarn 2b is unrolled to the largest diameter). Even when 2 is supported, it projects to the outer peripheral side of the bobbin raw material 2. For this reason, even if the yarn 2b is loosened and loosened from the outer peripheral surface of the bobbin raw material 2, the raw material support 3 can receive the yarn 2b.

  A buffer layer 5, which can be compressed by supporting the bobbin raw material 2, such as sponge, rubber, fabric, or the like, is provided on the base surface of the raw material support base 3 in a laminated form. By providing the buffer layer 5, the adhesiveness of the bobbin raw material 2 with respect to the raw material support base 3 is improved so that the yarn 2 b does not bite between them, and the unwinding yarn 2 b is used as the raw material support base. 3 (buffer layer 5) is improved in sliding (reducing frictional resistance) so as not to hinder unraveling.

  In the present embodiment, the raw material support 3 is held in a state of being lifted from the mounting table 10 by a support column 11 fixed in a state of protruding upward from the mounting table 10. In this way, by lifting the raw material support 3, the support column 11 is a swivel shaft portion for rotatably mounting the fryer 4 to a portion passing through the top and bottom of the mounting table 10 and the raw material support 3. 12 is formed.

  Further, the support column 11 protrudes upward from the raw material support base 3, and the guide protrusion 13 is held by this protruding portion. This guide protrusion 13 is formed in a cylindrical shape that fits into the core 2 a of the bobbin raw material 2 and contacts the inner peripheral surface of the core 2 a, and is concentric with the support column 11, in particular, the pivot shaft 12. It is formed as follows. Therefore, by positioning the bobbin raw material 2 in the guide protrusion 13, positioning (centering) of the bobbin raw material 2 on the raw material support 3 and prevention of rattling can be performed.

  The guide protrusion 13 may be fixed to the support column 11 (or the raw material support 3), but has a structure that can be attached to and detached from the support column 11 (or the raw material support 3). A plurality of sizes having different outer diameters may be prepared. Thus, by making the guide protrusion 13 detachable, it is possible to correspond to a plurality of types of bobbin raw materials 2 having different inner diameters of the winding core 2a.

  The fryer 4 has a side piece portion 16 having an incident guide 15 and an upper piece portion 18 having an emission guide 17. Further, as described above, in the present embodiment, the rotation of the fryer 4 is held by using the support column 11 (the turning shaft portion 12) that supports the raw material support 3. For this purpose, the flyer 4 has a rotating arm 20 that is rotatably held with respect to the turning shaft portion 12, and the side piece in an L-shaped state at the distal end (radially outward) of the rotating arm 20. This is a structure in which the portion 16 is raised.

The rotary arm 20 is provided with a bearing portion 21 incorporating a bearing or the like in order to reduce the rotational resistance with respect to the turning shaft portion 12. Needless to say, a simple structure may be adopted in which the bearing portion 21 is omitted, and a rotation hole provided in the rotation arm 20 is directly inserted into the turning shaft portion 12 to be rotatable.
The side piece 16 is provided in the longitudinal direction so as to be parallel to the outer peripheral surface of the bobbin raw material 2 supported by the raw material support base 3. It arrange | positions so that it may become a position (outer peripheral side) which does not contact the base 3. FIG.

  That is, the side piece 16 always faces the outer peripheral surface of the bobbin raw material 2 and keeps a parallel state even by circling around the raw material support 3 as the rotary arm 20 rotates. It becomes. Note that the revolving operation of the side piece 16 is performed with the turning shaft portion 12 of the support column 11 as the rotation axis, and the turning shaft portion 12 and the bobbin raw material 2 are guided by the guide protrusions 13 held by the support column 11. Since the centering is performed, it is needless to say that the side piece 16 circulates around the core center of the bobbin raw material 2 supported by the raw material support 3 as a rotation axis.

For this reason, when the yarn 2b is pulled out radially outward from the bobbin raw material 2, the yarn 2b is placed on the outer periphery of the bobbin raw material 2 with respect to the incident guide 15 provided on the side piece 16. It can enter as a state facing the surface and can be led out to the outer surface side of the flyer 4 (side piece portion 16).
With respect to the side piece 16, the incident guide 15 is located at a position lower than the longitudinal central portion H (a position that is ½ of the total length of the winding core 2 a) on the outer peripheral surface of the bobbin raw material 2 (down by Δh dimension) Is provided. This is due to the following reason.

  That is, the yarn 2b being unwound from the bobbin raw material 2 generates a balloon B with a downward convex curvature (slack that swells around the bobbin raw material 2). The reason is to reduce the load (tension) acting on the thread 2b by holding the balloon B small by keeping the pulling height when guiding to the low.

  In addition, when the yarn 2b forming the bobbin raw material 2 is a filament yarn, in addition to the yarn 2b having no wings, a straight cylindrical one is used as the core 2a of the bobbin raw material 2. Coupled with this, when the bobbin raw material 2 is placed vertically, the yarn 2b is unraveled and falls off from the outer peripheral surface thereof. In such a thread 2b, the amount of contact with the raw material support 3 also tends to increase with respect to the above-described balloon B. Therefore, it is even more important to employ the arrangement of the incident guide 15 described above.

  The specific level of the Δh dimension may be appropriately changed according to the yarn type of the yarn 2b, the rotational radius and rotational speed of the rotary arm 20, and the like. However, if the Δh dimension is excessively increased (if the incident guide 15 is lowered too much), the amount of contact of the balloon B with the raw material support table 3 may be further increased. It is necessary to increase the diameter. Further, when the yarn 2b is unwound from the upper position of the bobbin raw material 2, the yarn 2b heading to the incident guide 15 has a steep downward inclination angle, and the yarn 2b passing through the incident guide 15 is bent at a steep angle. This may lead to unwinding resistance. Therefore, the Δh dimension is preferably 5 to 20 mm (more preferably around 10 mm).

  On the other hand, the upper piece 18 of the flyer 4 is provided obliquely so as to be away from the bobbin raw material 2 toward the upper end, and is bent in a “<” shape with respect to the upper end of the side piece 16. Has been. Therefore, when the yarn 2b is passed through the emission guide 17 provided on the upper piece 18 from the outer surface side of the flyer 4 (upper piece portion 18) toward the inner surface side of the flyer 4 (upper piece portion 18), The yarn 2b can be emitted in an elevation angle direction directly above the bobbin raw material 2 supported by the raw material support base 3.

  With respect to the upper piece 18, the position where the emission guide 17 is provided (the height from the raw material support 3 and the inclination angle of the upper piece 18) is such that the yarn 2 b emitted from the emission guide 17 is located above the unwinding device 1. It is a guideline that it can be prevented from being caught by the spool material 2 supported by the material support 3 while heading to the yarn guide G provided (a guideline for how much the exit angle (= elevation angle) of the yarn 2b is to be set). ).

Each of the entrance guide 15 and the exit guide 17 is a perforated member for passing the yarn 2b, and is formed of resin, metal, or the like that can suppress friction with the yarn 2b as small as possible. Thus, the unwinding resistance of the yarn 2b is suppressed, and the yarn 2b can be prevented from being easily generated or broken due to rubbing or the like.
However, as a material for forming the side piece 16 and the upper piece 18, a resin, a metal, or the like that can suppress friction with the yarn 2 b as small as possible is used, and the side piece 16 or the upper piece 18. By forming a through-hole in this, the entrance guide 15 and the exit guide 17 can be formed by this through-hole (a perforated member as a separate member can be omitted).

  As described above in detail, in the flyer 4 having the side piece portion 16 provided with the incident guide 15 and the upper piece portion 18 provided with the emission guide 17, the bobbin raw material 2 vertically supported by the raw material support 3. The yarn 2b to be unwound from is passed through the incident guide 15 arranged opposite to the outer peripheral surface of the bobbin raw material 2 and is taken out to the outer surface side of the fryer 4 (side piece portion 16). Also, the yarn guide 2b is guided to the upper side, and the yarn 2b is passed from the emission guide 17 to the inner surface side of the fryer 4 (upper piece portion 18) again.

Then, the yarn 2b exiting the exit guide 17 is sent to a downstream process (for example, a process of rewinding to a small bobbin) via a yarn guide G provided above the unwinding device 1. It has become.
In the unwinding device 1, the center of the bobbin raw material 2 supported by the raw material support 3 (the center of the support column 11 and the turning shaft portion 12 and the rotational axis of the fryer 4) is the yarn guide G. It shall be installed so as to be directly below.

  When the yarn 2b is fed toward the downstream process of the unwinding device 1 as described above, the drawing drive is applied to the yarn 2b passing through the yarn guide G, the emission guide 17, and the incident guide 15. Thus, an action (unwinding force) for unwinding the yarn 2b is transmitted to the bobbin raw material 2 on the raw material support 3. Upon receiving this unwinding action, the fryer 4 moves around the raw material support table 3 around the pivot shaft portion 12, and thereafter, the circular operation of the fryer 4 continues and the concentric circular shape continues. The yarn 2b is unwound while the balloon B is formed.

By the way, in the unwinding apparatus 1 which concerns on this invention, the provisional brake means 30 was comprised with respect to having set it as the structure which the flyer 4 carries out a circular motion.
The temporary brake means 30 is configured to be able to stop and hold the flyer 4 as necessary. Between the flyer 4 and at least one place in the orbit around which the flyer 4 circulates, The flyer 4 is configured to generate resistance (braking action) in the rotating operation.

Specifically, the temporary brake means 30 is configured as a combination of a magnet 31 and a magnetic body 32 attracted to the magnet 31. Here, the magnetic body 32 refers to a material that exhibits magnetism when approaching the magnet 31, and includes not only a metal material such as iron but also a magnet.
In the present embodiment, as shown in FIG. 2, the magnet 31 is in a state in which a magnetic force is generated downward (at the back side of the raw material support 3) at two locations in the outer peripheral portion of the raw material support 3. It is provided. The circumferential interval between the two magnets 31 is 180 °. The magnet 31 may be provided only at one place, or conversely, it may be provided at three or more places. However, since the brake action becomes stronger as the number of places to be provided is increased, it is necessary to adjust the number of installation places of the magnets 31 in relation to the circulation performance of the flyer 4 and the brake action.

On the other hand, the magnetic body 32 extends the rotating arm 20 of the flyer 4 in the direction opposite to the side piece portion 16 so as to project upward from one portion that passes directly under the magnet 31. It is provided. In order to provide the magnetic body 32 so as to protrude upward, a simple structure is adopted in which a bolt is screwed into the rotary arm 20 and a nut 33 is used to cause a double nut action to be fixed.
The bolts forming the magnetic body 32 can adjust the upward protrusion amount by changing the degree of screwing with the rotary arm 20, and the magnet 31 and the magnetic body 32 can be adjusted by adjusting the upward protrusion amount. There is an advantage that the suction force generated between the two can be easily adjusted.

The attraction force generated between the magnet 31 and the magnetic body 32 is such that the flyer 4 can easily rotate around the thread 2b from the bobbin raw material 2 (does not interfere with the rotation), and then the yarn 2b Adjustment is performed with reference to the fact that the revolving operation of the fryer 4 can be stopped and held in a state where the drawing force is not applied.
Since the provisional brake means 30 having such a configuration is provided, if the magnetic body 32 is aligned with the position where the magnetic body 32 is attracted close to the magnet 31 with respect to the rotation position of the flyer 4, the rotation operation of the flyer 4 is stopped. Can be made.

Therefore, for example, in the event that the yarn supply stops in the downstream process during the unwinding of the yarn 2b, the drawing drive is applied to the yarn 2b passing through the yarn guide G, the emission guide 17, and the incident guide 15. When it disappears, the flyer 4 receives the action of the temporary brake means 30 and immediately stops the turning operation.
That is, since the flyer 4 does not rotate due to inertia, the yarn 2b is torn off from the spool material 2 on the material support 3 due to the inertial rotation operation of the flyer 4. Absent.

  In addition, when the bobbin raw material 2 is set vertically with respect to the raw material support base 3, the yarn 2b unwound from the bobbin raw material 2 is passed through the entrance guide 15, the exit guide 17, and the yarn guide G, and the downstream process As shown in FIG. 3, when unwinding from a large number of bobbin raw materials 2 as shown in FIG. The operation can be prevented by the action of the temporary brake means 30.

That is, it is said that the yarn 2b is torn off from the bobbin raw material 2 on the raw material support 3 due to the fryer 4 operating freely in the circumferential direction in each unwinding device 1 during this preparatory work. There is nothing.
As described above, in the unwinding device 1 according to the present invention, the bobbin raw material 2 is placed vertically, and the flyer 4 is rotated around it, and the yarn 2b is unwound through the emission guide 17 provided on the flyer 4. The flyer 4 (emergence guide 17) performs a constant speed rotation operation and enables stable yarn feeding. Therefore, even if the yarn 2b has such a characteristic that it is separated from the outer peripheral surface of the vertically placed bobbin raw material 2, the yarn 2b can be unwound stably at a constant speed, The occurrence of yarn breakage can be prevented in advance.

Further, since the above-described yarn breakage action by the temporary brake means 30 can be obtained, it is possible to thoroughly reduce the work efficiency in the downstream process such as the yarn breakage in the unwinding device 1 and the yield of the product. Can be prevented.
Needless to say, since the unwinding device 1 according to the present invention is a system in which the bobbin raw material 2 is placed vertically, the inconvenience of the setting work that the horizontal placing system has is naturally eliminated. .

FIG. 4 shows a second embodiment of the unwinding device 1 according to the present invention.
In the unwinding device 1 of the second embodiment, the support pillar 11 for supporting the raw material support 3 is formed to have a length that reaches the upper end side of the bobbin raw material 2. Thus, the pivot shaft 12 can be attached and detached. Then, the rotary arm 20 of the fryer 4 is rotatably held on the turning shaft portion 12 via the bearing portion 21.

The flyer 4 includes a side piece 16 bent downward from a radial end of the rotary arm 20, and an incident guide 15 is provided on the side piece 16 and the same end of the rotary arm 20. The upper piece 18 is formed to bend outward and obliquely outward, and the emission guide 17 is provided on the upper piece 18.
In the unwinding device 1 of the second embodiment, the temporary brake means 30 includes a magnet 31 provided on the outer surface of the lower end of the side piece 16, and the magnetic body 32 is located at an outer position where the flyer 4 rotates. It has a provided configuration.

Also in the unraveling device 1 of the second embodiment having a difference in part of such a configuration, the operational effects caused by the fryer 4 and the temporary brake means 30 are substantially the same as those of the first embodiment. The detailed explanation here is omitted.
By the way, the present invention is not limited to the above-described embodiments, and can be appropriately changed according to the embodiments.

For example, the raw material support 3 is not limited to a disc shape, and any shape (a plan shape is a square shape or a plate as long as the bobbin raw material 2 can be supported vertically) It may be formed in a pedestal block instead of a shape.
In addition, the raw material support 3 is not limited to be supported in a state of being lifted from the mounting table 10, and is configured to be installed on the mounting table 10 without a gap, or as a structure that is integrated (shared) with the mounting table 10. Also good.

The installation position of the unwinding device 1 (what the downstream process is) is not limited. For example, the unwinding apparatus according to the present invention is provided upstream of the process in which a knitting machine, a sewing machine, or the like is installed. 1 may be installed.
In the temporary brake means 30 described in the first embodiment, the magnet 31 is provided on the upper surface of the mounting table 10, and the magnetic body 32 passes through the rotary arm 20 of the fryer 4 and directly above the magnet 31. And may be provided so as to project downward. Moreover, although the magnet 31 is provided in multiple places and the magnetic body 32 is provided in 1 place, on the contrary, the magnet 31 may be provided in 1 place and you may make it provide the magnetic body 32 in multiple places.

  Moreover, in the temporary brake means 30 demonstrated in 1st Embodiment, the magnetic body 32 may be provided in the circulation track | orbit which the flyer 4 circulates, and the magnet 31 may be provided in the flyer 4. FIG. Similarly, in the temporary brake means 30 described in the second embodiment, the magnet 31 may be provided in the orbit around the flyer 4 and the magnetic body 32 may be provided in the fryer 4.

In the temporary brake means 30 described in the first embodiment and the second embodiment, the magnet 31 may be an electromagnet. By doing in this way, the stop timing of the fryer 4 can be controlled in accordance with the desired timing by switching the magnet 31 on and off.
Further, the temporary brake means 30 is provided with a stopper piece formed of an elastic material such as a rubber plate in a circular track around which the flyer 4 circulates, and the flyer 4 or a member attached to the flyer 4 interferes with the stopper piece. It is good also as such a structure. Naturally, the stopper piece may be provided on the fryer 4 and a member that interferes with the stopper piece may be provided in the orbit around which the fryer 4 circulates.

DESCRIPTION OF SYMBOLS 1 Unwinding device 2 Bobbin raw material 2a Winding core 2b Yarn 3 Raw material support stand 4 Flyer 5 Buffer layer 10 Mounting table 11 Support column 12 Turning shaft part 13 Guide protrusion 15 Incident guide 16 Side piece 17 Output guide 18 Upper piece 20 Rotation Arm 21 Bearing 30 Temporary brake means 31 Magnet 32 Magnetic body 33 Nut B Balloon G Yarn guide

Claims (8)

A raw material support base for supporting a bobbin raw material in which a thread is wound around a core in a standing state so as to support one end side of the core;
A flyer provided around the pincushion material around the center of rotation of the pincushion material supported by the material support;
The flyer includes
An exit guide is provided for allowing the yarn to be unwound from the bobbin raw material to be drawn radially outward of the bobbin raw material and then emitting the yarn in an elevation direction directly above the bobbin raw material. Unraveling device. A raw material support base for supporting a bobbin raw material in which a thread is wound around a core in a standing state so as to support one end side of the core;
A flyer provided around the pincushion material around the center of rotation of the pincushion material supported by the material support;
The flyer includes
An incident guide provided in an arrangement facing the outer peripheral surface of the bobbin raw material and passing the yarn unwound from the bobbin raw material to the outer surface side of the flyer;
An exit guide that passes the yarn from the entrance guide toward the outer surface of the fryer to the inner surface side of the fryer above the entrance guide;
A yarn unwinding device characterized in that is provided.   Temporary brake means is provided between both the flyer and at least one place in the orbit around which the flyer circulates and causes the flyer to rotate and stop and hold the flyer. The yarn unwinding device according to claim 1 or 2.   4. The yarn unwinding device according to claim 3, wherein the temporary brake means is composed of a combination of a magnet and a magnetic material attracted to the magnet.   The yarn unwinding according to any one of claims 2 to 4, wherein an incident guide of the flyer is provided at a position lower than a central portion in a longitudinal direction on an outer peripheral surface of the bobbin raw material. apparatus.   The flyer has a side piece for allowing a yarn passing from the bobbin material supported by the material support to the incident guide to be incident on an outer peripheral surface of the bobbin material. The yarn unwinding device according to any one of claims 2 to 5.   The fryer has an upper piece portion that emits the yarn entering the inner surface of the fryer from the emission guide in an elevation direction directed directly above the bobbin raw material supported by the raw material support base. The yarn unwinding device according to any one of claims 1 to 6.   The said raw material support stand is formed in diameter larger than the said pincushion raw material, and the buffer layer which can be compressed by the support of the said pincushion raw material is provided in the stand upper surface. Item 8. The yarn unwinding device according to any one of items 7 to 9.

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