JP2598320B2 - Bobbin fastening device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a bobbin fastening device, and more particularly to a bobbin fastening device in a yarn winding machine that winds a synthetic fiber yarn at high speed.

The present invention particularly relates to a bobbin fastening device that can smoothly and reliably grip a bobbin.

The present invention also relates to a bobbin holder fastening device for a winder that winds a plurality of yarns simultaneously.

[Conventional technology]

Conventionally, a bobbin fastening device has been disclosed in
No., as described in U.S. Pat.No. 4,458,850,
The ring-shaped elastic body inserted into the bobbin holder body is compressed in the axial direction to grip the bobbin. In such a bobbin fastening device, a large force is required to compress and deform the ring-shaped elastic body in the axial direction. In addition, the elastic body is compressed by the spring provided at the tip of the bobbin holder body, and the force of compressing the elastic body at the back side is smaller than the elastic body at the tip side of the holder body due to frictional resistance with the holder body and the bobbin. Therefore, the elastic body on the back side is hardly deformed. As a result, the inner surface of the bobbin is not completely grasped, and the bobbin is eccentric during winding, causing a problem of vibration.

Further, in the conventional bobbin tightening device described in the specification of US Pat. No. 4,458,850, when the bobbin is tightened, the compressed air in the cylinder chamber is exhausted. Thereby, the gripping member and the cylindrical member alternately inserted into the bobbin holder main body are compressed by the force of the disc spring. The gripping member inserted into the back side of the bobbin holder body in this way is compressed via the gripping member at the tip and the cylindrical member.

Therefore, in addition to the sliding resistance between the bobbin holder main body and the cylindrical member, the sliding resistance between the gripping member and the bobbin holder main body, and the sliding resistance between the gripping member and the bobbin inner diameter, the gripping member on the distal end side is added. In particular, in the case of a rubber ring, a force acts to deform the rubber ring on the back side. Therefore, the force acting on the distal-side gripping member is greater than the rearward-side gripping member, and the distal-side gripping member is in a gripping state earlier than the rearward-side gripping member, and the distal-side bobbin is gripped. I will.
As a result, the force transmitted to the back side is reduced, and the gripping member on the back side is not completely adhered to the inner surface of the bobbin or the outer peripheral surface of the bobbin holder body, so that there is a phenomenon in which the bobbin gripping force is insufficient.

As a result, when the bobbin is gripped, there is a problem that the run-out increases and vibration occurs, noise is generated, and the bearing supporting the bobbin holder body is damaged. Also, due to run-out, the yarn being wound is squeezed between the contact rollers and the yarn quality deteriorates, or during the winding of the yarn, the chuck is eccentric due to the weight of the package and the vibration increases. There was a problem that the package collapsed.

In particular, in recent years, the number of gripping means and cylindrical members used for a single bobbin holder has increased due to a large number of cups and a large number of winders in recent years. For this reason, the above-mentioned insufficiency of the bobbin gripping force and the problem of package collapse have become prominent.

As another conventional technique, as described in Japanese Utility Model Laid-Open No. 57-96144 and Japanese Utility Model Laid-Open No. 50-142836, it is composed of a pair of truncated conical inclined members having inclined portions and a cylindrical member having an inclined inner surface. There is a bobbin tightening device in which a pair of truncated cone-shaped inclined members press the cylindrical member in the axial direction when the bobbin is tightened, so that the outer surface of the cylindrical member is tightly engaged with the inner surface of the bobbin. In this device, the outer surface of the cylindrical member is always in intimate engagement with the inner surface of the bobbin during winding of the yarn. However, the integrally formed cylindrical member is rigidly formed and its diameter does not change, and its inner surface is spaced from the holder main body. For this reason, during winding, a fine vibration occurs due to the yarn stitches and the unbalance of the yarn package. Further, since the package weight and contact pressure are applied under the micro-vibration, the engaging portion between the holder main body and the cylindrical member is elaborated, and a seizure phenomenon occurs between the holder main body and the cylindrical member. Has a problem that the bobbin does not loosen while holding the bobbin.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION The present invention solves the above-described problems, and by reliably gripping the bobbin, prevents generation of vibration during winding and occurrence of collapse of the package, and reduces the noise of the winding machine. It is an object of the present invention to provide a bobbin tightening device for lowering the bearing life, improving the safety, and improving the yarn quality.

[Means for solving the problem]

In order to solve the above-mentioned problem, in the present invention, a bobbin gripping member and a cylindrical member that engages with the gripping member are inserted into the bobbin holder main body, and the gripping member has an inner surface and an inclined surface that engage with the bobbin holder main body. A first inclined member having an outer surface, a second inclined member having an inclined surface engageable with the first inclined member and an outer surface engaged with the inner surface of the bobbin, wherein the first inclined member is substantially in the circumferential direction. The second inclined member is divided into a plurality of pieces, and the second inclined member is composed of a plurality of pieces substantially separated in a circumferential direction, and a second piece is attached to each of the small pieces of the first inclined member in a state where the two inclined surfaces are in contact with each other. The pieces of the inclined member are engaged with each other, and the cylindrical member presses the first inclined member in the axial direction of the bobbin holder main body to expand the gripping member and grip the bobbin. Toss Bobbin 緊着 device is provided.

Furthermore, in the present invention, the bobbin holder body includes
A plurality of bobbin gripping members, and a cylindrical member that engages with the gripping members are inserted, and the gripping members are pressed in the axial direction to expand the gripping members and grip the bobbins. A bobbin fastening device, wherein main compression means for compressing the gripping member is provided at one end of the bobbin holder, and a compensating compression means for compensating for a compression force of the main compression means, wherein the main compression means is A bobbin tightening device, which is disposed between the provided end gripping member and the other end gripping member, wherein the number of the compensating compression means is smaller than the number of the gripping members. Is provided.

Further, as shown in the embodiment of the present invention, the above-mentioned two feature points may be applied simultaneously.

(Operation)

In the present invention, since the first and second inclined members are substantially separated from each other in the circumferential direction, when the bobbin is fastened, the first and second inclined members are in close contact with a pair of inclined surfaces, and The first inclined member is tightly engaged with the bobbin holder body, and the second inclined member is tightly engaged with the inner surface of the bobbin. For this reason, the bobbin is firmly gripped, the coaxiality is improved, and no fine vibration occurs.

When the bobbin is relaxed, the inclined surfaces of the pair of inclined members, the first inclined member and the bobbin holder main body, and the second inclined member and the bobbin inner surface are engaged with each other with a gap therebetween.
For this reason, the bobbin is relaxed and can be easily mounted and dismounted.

Further, in the present invention, a compression means for compressing the gripping member is provided at one end of the bobbin holder, and a compensating compression means for compensating the compression force of the compression means is provided at an intermediate position of the bobbin holder main body between the bobbin holder main body and the cylindrical member. It is arranged so as to engage with. Therefore, without being affected by the sliding resistance of the gripping member and the cylindrical member, a plurality of bobbins can be reliably gripped by uniformly applying a force to the plurality of elastic bodies, and the bobbin is coaxial with the bobbin holder. It is possible to prevent the level of vibrations from being lowered, prevent yarn quality defects, reduce the noise of the winding machine, and prevent the package from collapsing due to the eccentricity of the bobbin during winding.

〔Example〕

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Embodiment 1 The embodiment shown in FIGS. 1 and 2 has four bobbins 18.
The bobbin holder body has a bobbin gripping member, a cylindrical member engaged with the gripping member inserted therein, and the gripping member has an inner surface engaged with the bobbin holder body and a slanted outer surface. A first inclined member, a second inclined member having an inclined surface engageable with the first inclined member and an outer surface engaged with an inner surface of the bobbin, wherein the first inclined member is substantially divided into a plurality of small pieces in a circumferential direction. The second inclined member is composed of a plurality of pieces substantially separated in a circumferential direction, and the first inclined member is in a state where the two inclined surfaces are in contact with each other.
Pieces of the second inclined member are respectively engaged with the small pieces of the inclined member, and the cylindrical member presses the first inclined member in the axial direction of the bobbin holder main body, thereby expanding the gripping member to thereby move the bobbin. This is a bobbin fastening device to be gripped.

In FIG. 1, the bobbin holder body 15 is
A and 10B rotatably support the housing 11 of the winder.

A housing 11 is provided on the cylindrical portion 15a of the bobbin holder body 51.
The cylindrical member 16 is fixed to the side by bolts 17, and from there toward the distal end, the gripping member 1H, the cylindrical member 3D, the gripping member 1G, the cylindrical member 20C, the gripping member 1F, the cylindrical member 3C, the gripping member 1E, the cylindrical member 20B, a gripping member 1D, a cylindrical member 3B, a gripping member 1C, a cylindrical member 20A, a gripping member 1B, a cylindrical member 3A, and a gripping member 1A are sequentially inserted so as to be movable in the axial direction.

As shown in FIG. 3A, each of the gripping members 1A to 1H is divided into six in the circumferential direction.

The gripping member 1 divided into six parts includes a first inclined member 21 engaged with the bobbin holder body 15 and a second inclined member 21 engaged with the inner surface of the bobbin 18.
It is constituted by a spring member 23 for urging the inclined member 22 and the second inclined member 22 in the axial direction. First and second inclined members 21 and 22
Is preferably nylon, polyurethane rubber, bakelite or the like.

On the bottom surface of the first inclined member 21, there is provided a leg 21g which engages with the peripheral surface of the bobbin holder body 15, as shown in FIG. 4 (c).

As shown in FIGS. 3 (a) and 4 (b), the circumferential surface of the first inclined member 21 has a flange 21a and a flange 2 extending in the circumferential direction.
1b are formed at intervals in the axial direction of the bobbin holder body 15.

As shown in FIG. 1, the flange portion 21a is provided with cylindrical members 3A to 3D and 20A.
~ 20C, grooves 3a, 20 formed near the left end of the inner surface of 16
a, 16a. It engages with a groove formed at the other end of each of the cylindrical members 3A to 3D and 4 of the flange 21b at the other end.

As shown in FIG. 4 (a), a concave portion 21d having an appropriate shape such as a rectangle is formed in the center of the first inclined member 21, and the bottom surface of the concave portion 21d is formed as shown in FIG. 4 (b). , The first inclined surface 21c.

The second inclined member 22 has an outer shape that fits loosely into the recess 21d of the first inclined member 21. As shown in FIGS. 5 (a) and 5 (b), the second inclined member 22 extends in the circumferential direction and engages with the inner surface of the bobbin 18 with the outer surface 22b and the flange portion 22c which receives the pressing force of the spring 23 described above. Are formed. In addition, FIG.
In (c), as shown in FIGS.
23, the flange portion 21b of the first inclined member 21 is denoted by reference numeral 23 '.
As shown by, it has a spring action.

As shown in FIG. 5B, an inclined surface 22a that engages with the inclined surface 21c of the first inclined member 21 is formed on the bottom surface of the second inclined member 22. The flange 22c of the second inclined member 22 is
As shown in FIG. 2 and FIG. 2, each cylindrical member 3A to 3D, 4, 20A
Engage with the groove formed in the right end of ~ 20C.

In FIG. 5 (a), a plate-like projection 22d projects from the right side surface of the second inclined member 22, and the tip of the projection is an inclined surface 22e. Further, a groove 21e is formed in the recess 21e of the first inclined member 21 so as to be continuously engaged with the projection 22d, and a tip of the groove 21e is an inclined surface 21f.

The projecting portion 22d of the second inclined member 22 is fitted into the concave portion 21e of the first inclined member 21. Even when the inclined member 22 is in the expanded state without the bobbin 18, the projecting portion 22d is still in the cylindrical member 3 position. , 20
And does not fly out.

In FIG. 1, a concave portion 15c extending in the axial direction is formed at the tip of the bobbin holder main body 15 to form a cylinder chamber. The piston 5 is hermetically slidably mounted in the cylinder chamber 15c via an O-ring 6. A disc spring 7 is mounted between the piston 8 and the ring 8 screwed inside the recess 15c of the bobbin holder body 15.

Further, a cap 4 for compressing the first and second inclined members 21 and 22 under the force of the disc spring 7 is provided at the tip of the bobbin holder body 15 so as to be movable in the axial direction of the bobbin holder body 15. .

The piston 5 and the cap 4 are connected by a rod 9, and the tip of the rod 9 is screwed with a nut 9a.

The piston 5 has a hole 15 formed in the bobbin holder body 15.
It is actuated by compressed air supplied through b and moves axially.

When loosening the bobbin 18, the bobbin holder body 15
Compressed air is supplied from the rear through the hole 15b of the cylinder chamber 1
5c, the piston 5 is moved leftward in FIG.

As a result, the disc spring 7 is compressed, the cap 4 moves to the left, and the flange 4a of the cap 4 and the inclined member 22 engaged with the flange 22c of the inclined member 22 are pulled to the left, and the compression coil spring 23 To compress the cap 4 and the second inclined member 22
At a predetermined interval regulated by the interval between the flanges 21b and 21a of the first inclined member 21. Similarly, the interval between the cylindrical members is maintained by the inclined members 21 and the second inclined members 22 are loosened (see FIG. 2).

When the bobbin is gripped, the compressed air supplied from the rear portion of the bobbin holder body 15 is cut off, the compressed air in the cylinder chamber 15c is removed through the hole 15b of the bobbin holder body 15, and the piston 5 is moved rightward by the spring force of the disc spring 7. When the piston 5 moves to the right, the cap 4 connected to the piston 5 by the rod 9 moves to the right. When the flange 21b of the inclined member 21 is loosened, the compression coil spring 23 expands and the inclined surface 21c of the first inclined member 21A. The inclined surface 22a of the second inclined member 22 rides on, and the second inclined member 22 expands in the radial direction to grip the inside of the bobbin 18. The second inclined member 22 expanded by the compression coil spring 23
Is further compressed by the disc spring 7 to increase the gripping force.

In the first embodiment shown in FIGS. 1 and 2, the compression coil springs 23 of the same strength are all engaged with all the elastic bodies 1 as spring materials, but from the tip end side of the bobbin holder body 15 toward the back side. Increase the spring material in order, or use the inclined surfaces of the inclined members 21 and 22.
The inclination angles of 21c and 22a may be reduced in order from the front end side of bobbin holder main body 15 to the rear side, so that inclined member 22 on the rear side can be easily expanded.

[Effects of the First Embodiment] According to the fastening device of the present invention, since the inclined member separated in the circumferential direction is used, the force for expanding the inclined member that grips the bobbin is small. Therefore, a large gripping force is obtained, and the gripping force of the bobbin on the back side from the bobbin holder tip becomes uniform.

Also, when the bobbin is tightened, the first and second inclined members are in close contact with each other on the inclined surface, and the first and second inclined members are separated in the circumferential direction, so that the inner surface is in close contact with the bobbin holder body. I do. For this reason, there is no gap between the gripping member and the main body, and it is difficult for micro-vibration to occur during winding, and the micro-vibration does not cause the main body and the gripping member to be seized or worn. Vibration can be prevented, safety is improved, and yarn quality is improved.

In the above-described embodiment, the compression coil spring 23 is embedded between the pair of the first inclined member and the second inclined member. Further, a coil spring, a disc spring, a wave washer, a plate spring, a torsion spring, a rubber material, or the like is used instead of the compression coil spring.
As shown in the figure, a part of the first inclined member may be used as a spring material.

In the above embodiment, the pair of the first inclined member and the second inclined member
The compression coil spring 23 was buried in the entire space between the inclined member and the inclined member. However, even if the compression coil spring is not used for all, the compensating compression means for compensating the main compression means such as the disc spring 7 may be used.
Less than the number of gripping members may be provided between the gripping member of the end support provided with the main compression means and the gripping member of the other end.

Embodiment 2 Embodiment 2 of this aspect of the present invention will be described with reference to FIGS.

Components that are the same as or similar to those in the first embodiment are denoted by the same reference numerals, detailed description thereof will be omitted, and differences will be described below.

Since the compression coil spring 23 is not provided between all the first inclined members and the second inclined members,
Unlike the first embodiment, the concave portion of the inclined member 22 has one end opened.

In the second embodiment, the compensating compression means of the present invention is provided in the cylindrical member 20C. That is, the spring receiver 24 is fixed to the bobbin holder body 15 by the set screw 24a. Bobbin holder body 15 in spring receiver 24
Are formed in the axial direction. Recess and cylindrical member 20C
A compression coil spring 23 is buried between them.

Further, similarly to the first embodiment, the tip of the bobbin holder main body 15 receives the force of the disc spring 7 and receives the first and second inclined members 2.
The cap 4 for compressing 1, 22 is the bobbin holder body 1.
The piston 5 and the cap 4 are connected by a rod 9, and the tip of the rod 9 is connected to a nut 9a.
It is screwed in. The piston 5 is actuated by compressed air supplied through a hole 15b formed in the bobbin holder body 15, and moves in the axial direction.

When loosening the bobbin 18, the bobbin holder body 15
Compressed air is supplied from the rear through the hole 15b of the cylinder chamber 1
In step 5c, the piston 5 is moved leftward in FIG.

As a result, the disc spring 7 is compressed, the cap 4 moves to the left, and the flange 4a of the cap 4
The cap 4 and the second inclined member 22 are maintained at a predetermined distance regulated by the distance between the flanges 21b and 21a of the first inclined member 21 by pulling the inclined member 22 engaged with 22c to the left. Similarly, the interval between the cylindrical members is maintained by the inclined members 21 and the second inclined members 22 are loosened. When the gripping member 1F is loosened and maintained at a predetermined interval, the cylindrical member 20C is pulled leftward to compress the compression coil spring 23, and the flanges 21b and 21a of the large one inclined member of the gripping member 1G are moved to a predetermined position. Keep at intervals. Repeat 1H in the same way
Relax. (See FIG. 7) When holding the bobbin, the compressed air supplied from the rear portion of the bobbin holder body 15 is cut off, the compressed air in the cylinder chamber 15c is removed through the hole 15b of the bobbin holder body 15, and the piston 5 To the right. When the piston 5 moves to the right, the cap 4 connected to the piston 5 by the rod 9 expands the disc spring 7 to move to the right, loosens the flange 21b of the inclined member 21 and simultaneously compresses the gripping member 1A to 1H sequentially. Then, the compression coil spring 23 expands and the gripping members 1G-
The inclined surface 22c of the second inclined member 22 rides on the inclined surface 21c of the first inclined member 21A of 1H, and the second inclined member 22 expands in the radial direction to grip the inside of the bobbin 18. The second inclined member 22 expanded by the disc spring 7 is further compressed by the compression coil spring 23, and the gripping force is increased by compensating that the compression force by the disc spring 7 decreases as it goes to the back side of the bobbin holder.

FIGS. 10 and 11 show the position of the bobbin and the gripping force of the bobbin by the gripping member of the second embodiment shown in FIGS. 6 to 9 (the bobbin is moved in the circumferential direction so that the end faces of the bobbins do not contact each other). The solid line represents the conventional method, and the dotted line represents the gripping force of the bobbin according to the present invention.

FIG. 10 shows the gripping force of a bobbin holder that grips four bobbins, and FIG. 11 shows the gripping force of a bobbin holder that grips eight bobbins, and also shows the position of the compensating compression means. I have.

According to the conventional method, in both FIGS. 10 and 11, the gripping force (torque) of the bobbin decreases from the tip of the bobbin holder toward the back side, and in particular, is significantly lower than the allowable value on the back side. On the other hand, according to the present invention, the bobbin gripping force exceeds the allowable value at any point from the tip of the bobbin holder to the back side, and the bobbin is securely gripped,
It is possible to prevent the occurrence of vibration and the collapse of the package during winding, and to reduce the noise of the winding machine, improve the life of the bearing, improve the safety, and improve the yarn quality.

[Effects of Second Embodiment] In the present embodiment, the following effects are further obtained in addition to the effects of the first embodiment.

In this embodiment, a compression means for compressing the gripping member is provided at one end of the bobbin holder, and a compensating compression means for compensating the compression force of the compression means is provided at an intermediate position between the bobbin holder main body and the bobbin holder main body and the cylindrical member. They are arranged to engage. Therefore, without being affected by the sliding resistance of the gripping member and the cylindrical member, a plurality of bobbins can be reliably gripped by uniformly applying a force to the plurality of elastic bodies, and the bobbin is coaxial with the bobbin holder. It is possible to prevent the level of the vibration from being lowered, prevent the yarn quality from being deteriorated, reduce the noise of the winding machine, and prevent the bobbin from being eccentric during winding and the package from collapsing.

In this embodiment, a large-capacity compression means may be provided at the end of the bobbin holder, and a small-sized compression means may be provided in the middle for compensation, so that the diameter of the bobbin holder can be reduced.

In the first and second embodiments, the first inclined member and the second
Although both inclined members were completely separated in the circumferential direction,
One or both of the second inclined members may be partially connected in a part in the axial direction so as not to hinder the movement.

Third Embodiment Next, a third embodiment, which is a modification of the second embodiment, will be described with reference to FIGS. 12 and 13.

In FIG. 12, the bobbin holder body 15 is
The housing 11 of the winder is rotatably supported by A and 10B.

The cylindrical portion 15a of the bobbin holder body 15 has a housing 11
The cylindrical member 16 is fixed to the side by bolts 17, and from there toward the tip side, the elastic member 1H, the cylindrical member 3D, the elastic member 1G, the cylindrical member
20C, elastic body 1F, cylindrical member 3C, elastic body 1E, cylindrical member 20B,
The elastic body 1D, the cylindrical member 3B, the elastic body 1C, the cylindrical member 20A, the elastic body 1B, the cylindrical member 3A, and the elastic body 1A are sequentially inserted so as to be movable in the axial direction.

The elastic members 1A to 1H of the present embodiment are gripping members of the bobbin of the present invention, and the U-shaped portions 1a formed at the bases thereof are formed at the end portions of the cylindrical members 3A to 3D, 20A to 20C, and 16 respectively. With the formed L-shaped groove.

At the time of bobbin tightening, the shoulder 1b of the elastic body 1 and the conical portion 3 of the cylindrical member 3, 20 or the cap 4 in FIG.
The elastic body 1 expands radially outward by the axial compressive force acting on the elastic body 1 when the a, 20a and 4a are in sliding contact with each other.

The distal end peripheral surface 1c of the conical portion of the elastic body 1 engages with the inner peripheral surface of the bobbin 18 to grip the bobbin 18.

The tension members 2A to 2E are provided so as to be slidable along the cylindrical portion 15a of the bobbin holder body 15, coaxial with the elastic members 1A to 1H, and inscribed in grooves formed inside the elastic members 1A to 1H. Have been.

That is, the tension members 2A to 2E have a U-shaped cross section as shown in FIG. 12-a, and the flange portion 2b is formed on the axially outside of the U-shaped ends of the elastic bodies 1A to 1H and the cylindrical member. 3A-3D, 20A-20C,
It is fitted between the groove formed on the inner peripheral surface of the groove 16.

The other flange 2a of the tension members 2A to 2E is movably inserted into annular grooves formed on the inner peripheral surfaces of the cap 4, the cylindrical members 3A to 3D, and 20A to 20C. The tension members 2A to 2H are divided into three small pieces in the circumferential direction.

With reference to FIG. 12-a, the compensating compression means of the present invention provided on the cylindrical member 20C will be described.

A spring receiver 24 is fixed to the bobbin holder body 15 by a set screw 24a. A recess is formed in the spring receiver 24 in the axial direction of the bobbin holder body 15. A compression coil spring 23 is embedded between the concave portion and the cylindrical member 20c,
The compression coil spring 23 is connected to the elastic members 1G and 1G via the cylindrical member 20C.
Energizing to compress H.

A recess 15c extending in the axial direction at the tip of the bobbin holder body 15.
Are formed to form a cylinder chamber. Cylinder chamber 15c
Inside, a piston 5 is mounted slidably in a sealed manner via an O-ring 6. Recess 15c of bobbin holder body 15
A disc spring 7 is mounted between a ring 8 screwed inside and the piston 5.

Further, a cap 4 for compressing the elastic bodies 1A to 1H under the force of the disc spring 7 is provided at the end of the bobbin holder body 15 so as to be movable in the axial direction of the bobbin holder body 15.

The piston 5 and the cap 4 are connected by a rod 9, and the tip of the rod 9 is screwed with a nut 9a.

The piston 5 is actuated by compressed air supplied through a hole 15b formed in the cylinder body 15, and moves in the axial direction. Thus, the main compression means of the present invention is configured.

When loosening the bobbin 18, the bobbin holder body 15
Compressed air is supplied from the rear through the hole 15b of the cylinder chamber 1
In step 5c, the piston 5 is moved leftward in FIG. As a result, the disc spring 7 is compressed, the cap 4 moves to the left, pulls the cylindrical member 3A engaged with the flange 2a of the pulling member 2A to the left, and pulls the cap 4 and the cylindrical member 3A as pulling members.
It is maintained at a predetermined interval regulated by the interval between the flanges 2a and 2b of 2A. In the same manner, the elastic members 1A to 1F are loosened while maintaining the interval between the cylindrical members by the tensile member 2A.

When the elastic body 1F is loosened, the cylindrical member 20C is pulled by the pulling member 2F sequentially pulled from the tip, thereby compressing the compression coil spring 23 and pulling the pulling member 2G to loosen the elastic body 1G. In the same way, loosen the elastic body 1H (13th
See figure).

When the bobbin is gripped, the compressed air supplied from the rear portion of the bobbin holder body 15 is cut off, the compressed air in the cylinder chamber 15c is removed through the hole 15b of the bobbin holder body 15, and the piston 5 is moved rightward by the spring force of the disc spring 7. When the piston 5 moves to the right, the cap 4 connected to the piston 5 by the rod 9 moves to the right due to the extension of the disc spring 7, and when the tension member 2 is relaxed and simultaneously compressed from the elastic body 1A to 1H sequentially, the compression coil spring is moved. 23 elongates. Therefore elastic body 1G ~ 1H
The elastic bodies 1A to 1H expand in the radial direction to
Hold the inside of 18. The elastic body expanded by the disc spring 7 is further compressed by the compression coil spring 23, and the gripping force is increased by compensating that the compression force by the disc spring 7 decreases toward the back of the bobbin holder.

In Example 3, all the elastic bodies having the same shape were used. However, the shape of the elastic body may be changed according to the mounting position of the elastic body to change the mechanical characteristics of the elastic body.

In the third embodiment, the compression coil spring 23
However, the number of compression coil springs 23 may be increased in a range smaller than the number of gripping members. In this case, the compression coil springs 23 may all have the same strength, or the spring members may be strengthened in order from the tip side of the bobbin holder main body 15 to the back side.

In the third embodiment, the description has been given of the bobbin holder for mounting four bobbins. However, the number of bobbins is not limited to this embodiment.

Further, the mounting position of the compression coil spring is preferably arranged at an appropriate position according to the value of the chucking force.

The shape of the elastic body is not limited to that of the above-described embodiment, that is, it may be a straight cylinder, a V-shaped cross section, an X-shaped cross section, an inverted V-shaped cross section, or the like.

In the above embodiment, the compression coil spring 23 is embedded, but a tension coil spring, a disc spring, a wave washer, a rubber material, a plate spring, a torsion spring, or the like may be used instead of the compression coil spring.

[Effects of Third Embodiment] In the third embodiment, a compression means for compressing the gripping member is provided at one end of the bobbin holder, and a compensating means for compensating the compression force of the compression means, as in the second embodiment. The compression means is disposed at an intermediate position of the bobbin holder main body so as to engage between the bobbin holder main body and the cylindrical member. Therefore, it is not affected by the sliding resistance of the gripping member and the cylindrical member,
A plurality of bobbins can be securely gripped by uniformly applying a force to a plurality of elastic bodies, the bobbins are gripped coaxially with the bobbin holder, the level of vibration is reduced, yarn quality is prevented, and the noise of the winding machine is reduced. It is possible to prevent the package from collapsing due to lowering or eccentricity of the bobbin during winding.

In the third embodiment, a large-capacity compression means may be provided at the tip of the bobbin holder, and a small compression means may be provided in the middle for compensation, so that the diameter of the bobbin holder can be reduced.

[Other embodiments]

Further, in the present invention, as shown in the first or second embodiment described above, the gripping member can be engaged with the first inclined member having the inner surface and the inclined outer surface engaged with the bobbin holder main body and the first inclined member. And a second inclined member having an outer surface engaging with the inner surface of the bobbin. The force of the compression means is transmitted to the cylindrical member and the gripping member by the tension member as shown in the third embodiment. Is also good.

In this case, as shown in FIG.
The gripping member 1 including the first inclined member 21 and the second inclined member 22 may be formed separately or may be integrated.

Further, as shown in FIG. 15, an inclined surface is formed on both sides of the first inclined member 21 corresponding to the two bobbin gripping portions, and the second inclined member 22 is engaged with each inclined surface. Is also good. In FIG. 15, the tension member 2 is formed integrally with the first inclined member 21.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION By this invention, a bobbin can be reliably hold | maintained, and it can prevent that a vibration generate | occur | produces during winding and a winding collapse of a package generate | occur | produce, The noise reduction of a winding machine, the life improvement of a bearing, safety In addition, the yarn quality can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first embodiment of the present invention, showing a state in which a bobbin is gripped, and FIG. 2 is a cross-sectional view showing a state in which the bobbin is loosened. FIG. 3 (a) is a detailed sectional view of a portion IIIA in FIG. 1 and FIG. 3 (b), and the bobbin is omitted. FIG. 3 (b) is a view on arrow IIIB of FIG. 3 (a), and the cylindrical member is removed. FIG. 3 (c) shows the III C of FIG. 3 (b).
FIG. 4 shows the first inclined member, FIG. 4 (a) is a plan view, and FIG. 4 (b) is IV B of FIG. 4 (a).
IVB arrow view, FIG. 4 (c) is a left side view, FIG. 5 shows a second inclined member, FIG. 5 (a) is a plan view, FIG. 5 (b) is FIG. 5 (a) 5) is a left side view, FIG. 6 is a cross-sectional view of the second embodiment of the present invention, showing a state in which the bobbin is gripped, and FIG. It shows the state that it was.
FIG. 8 (a) is a detailed sectional view of a portion VIIIA in FIG. 8 (b), and the bobbin is omitted. FIG. 8 (b) is a view taken in the direction of the arrow VIIIB in FIG. 8 (a), and the cylindrical member is removed. 8 (c) is a sectional view taken along the line VIIIC-VIIIC of FIG. 8 (b), FIG. 9 shows the second inclined member, FIG. 9 (a) is a plan view, and FIG. 9 (b) is FIG. 9 (a) is a view along arrow IX B-IX B,
FIG. 9 (c) is a left side view, FIG. 10 is a diagram showing the relationship between the bobbin position and the bobbin gripping force in a bobbin holder configured to grip four bobbins, and FIG. 11 is an eight bobbin. 12 is a diagram showing the relationship between the position of the bobbin and the gripping force of the bobbin in a bobbin holder configured to grip the bobbin. FIG. 12 is a cross-sectional view showing a state where the bobbin is gripped in the third embodiment of the present invention. Is a detailed cross-sectional view of the elastic body and the tension member, FIG. 13 is a cross-sectional view showing a state where the bobbin is loosened from the state of FIG. 12, and FIG. 14 is a diagram of the gripping member and the tension member of another embodiment of the present invention. FIG. 15 is a partial perspective view of a gripping member and a tension member of still another embodiment. 1A, 1B, 1C, 1D, 1E, 1F, 1G, 1H ... Grip member, 1H, 3
A, 3B, 3C, 3D, 20A, 20B, 20 ... cylindrical member, 15 ... bobbin holder body, 18 ... bobbin, 21 ... first inclined member,
21c: first inclined surface, 21d: recess, 21g: leg, 22
… Second inclined member, 22a… inclined surface, 22b… outer surface, 23…
Spring material,

Claims (3)

(57) [Claims] 1. A bobbin holding member, comprising: a bobbin holding member;
A cylindrical member engaged with the gripping member is inserted, the gripping member has a first inclined member having an inner surface and an inclined outer surface engaged with the bobbin holder body, and an inclined surface engageable with the first inclined member. A second inclined member having an outer surface engaged with an inner surface of the bobbin, wherein the first inclined member is substantially separated into a plurality of small pieces in a circumferential direction, and the second inclined member is substantially separated in a circumferential direction. Pieces of the second inclined member are respectively engaged with small pieces of the first inclined member in a state where the two inclined surfaces are in contact with each other, and the first inclined member is formed by the cylindrical member. Wherein the gripping member is expanded to grip the bobbin by pressing the bobbin in the axial direction of the bobbin holder body. 2. A bobbin holder main body has a plurality of bobbin gripping members and a cylindrical member engaged with the gripping members inserted therein, and the gripping members are pressed in the axial direction to expand the gripping members. A bobbin fastening device for gripping a bobbin, wherein a main compression means for compressing the gripping member is provided at one end of a bobbin holder, and a compensating means for compensating a compression force of the main compression means. The compression means is provided between the gripping member at the end provided with the main compression means and the gripping member at the other end, and the number of the compensating compression means is smaller than the number of the gripping members. A bobbin fastening device. 3. A bobbin holder main body has a plurality of bobbin gripping members and a cylindrical member engaged with the gripping members inserted therein, and main compression means for compressing the gripping members is provided at one end of the bobbin holder. A compensating compression means for compensating for the compression force of the main compression means is disposed between the gripping member at the end provided with the main compression means and the gripping member at the other end, The number of the compensating compression means is smaller than the number of gripping members, the gripping member has a first inclined member having an inner surface and an inclined outer surface engaged with the bobbin holder body, and an inclined surface and bobbin engagable with the first inclined member. A second inclined member having an outer surface engaged with an inner surface, wherein the first inclined member is substantially separated into a plurality of small pieces in a circumferential direction, and the second inclined member is substantially separated in a circumferential direction. Made of several pieces, before Wherein in a state where both inclined surfaces are in contact first
Pieces of the second inclined member are respectively engaged with the small pieces of the inclined member, and the cylindrical member presses the first inclined member in the axial direction of the bobbin holder main body, thereby expanding the gripping member to thereby move the bobbin. A bobbin fastening device characterized by being gripped.