JP2003300671A - Bobbin holder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bobbin holder preventing variations in a tightening force between an end portion and a center portion on the bobbin holder of a winding machine even if the bobbin holder increases in length with an increase in the number of windings that are wound on the bobbin holder at the same time. <P>SOLUTION: The bobbin holder has a tightening member mounted on the outer periphery of the holder, the tightening member comprising a taper member and a compression means for widening the taper member in a normal direction, with the taper member having inclined surfaces on its outer peripheral surface tightening a bobbin, and on each end; of the inclined surfaces, the inclined surface at one end engages the inclined surface of a first inclined member secured to the holder, while the inclined surface at the other end engages the inclined surface of a second inclined member that can coaxially slide against the holder. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin holder for mounting and fixing a bobbin in a winding machine configured to wind a yarn on a cylindrical bobbin. The bobbin holder of the present invention is particularly suitable for a winder that spins synthetic fiber yarns such as polyester and polyamide and winds a multi-end package at a speed of several thousand m / min.

[0002]

2. Description of the Related Art In recent years, yarn winding machines tend to have multiple ends (a plurality of bobbins are mounted on one bobbin holder), and the length of the bobbin holder tends to be long.
As a recent technique for bobbin holders in these winding machines, Japanese Utility Model Laid-Open No. 6-67461 and Japanese Patent Laid-Open No. 7-
There is a bobbin holder disclosed in Japanese Patent No. 41251.

[0003]

Among the conventional techniques described above, in the former bobbin holder disclosed in Japanese Utility Model Laid-Open No. 6-67461, when a plurality of bobbins are tightly attached, a plurality of attachment members are attached to the support shaft. And a plurality of the tight-bonding members are compressed by the compression means arranged at one end. However, when the number of ends is 8 or more, in this method, the plurality of fastening means are compressed by one compression means, and thus the pushing force in the axial direction of the fastening means located at a portion distant from the compression means becomes small due to the sliding resistance. As a result, the bobbin is not sufficiently gripped, and there are problems that the vibration level becomes high during winding and the winding shape becomes poor.

In the latter bobbin holder disclosed in Japanese Unexamined Patent Publication No. 7-41251, when a plurality of bobbins are tightly attached, a plurality of affixing members are provided on the support shaft so that the aforesaid respective affixing means can be used. The compression means is provided and the adhesive member is compressed by itself.
However, when many bobbins are tightly attached to one bobbin holder, the length of the bobbin is usually short. Therefore, if the attachment members are arranged in two axial positions per bobbin,
There is a problem that the space for arranging the adhesive member is insufficient. In addition, since the number of compression means is large, the total spring force is 1.5 to 2 t, and when the bobbin is loosened, the pressing means for pushing back against the compression means is enlarged and incorporated into a predetermined bobbin holder diameter. There was a problem that I could not do it. Further, even if the pressing means is incorporated in multiple stages, not only the cost becomes high, but also the apparatus becomes large and the natural frequency is lowered, so that there is a problem that the speed cannot be increased.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems associated with the conventional bobbin holders described above, and to provide a long bobbin holder capable of tightly attaching multi-end bobbins.

[0006]

In order to solve the above-mentioned problems, the bobbin holder of the present invention has a plurality of fastening members arranged on the outer periphery of the holder and compresses the fastening members in the axial direction. A bobbin holder for a winder, wherein the bobbin holder of the winding machine is expanded to the outer diameter direction of the holder so that the inner diameter of a cylindrical bobbin coaxially attached to the holder is tightly adhered to the holder. A first inclined member that is fixed and has an inclined surface on its outer periphery, a second inclined member that is provided coaxially slidably on the holder and that has an inclined surface on its outer periphery, and the first and second inclined members and the bobbin. And a compression means for pressing the second tilting member in the axial direction of the holder to expand the taper member in the normal direction, B) the taper member The outer peripheral surface that holds the bobbin tightly Inclined surfaces at both ends of the inner circumference, one of the inclined surfaces is engaged with the inclined surface of the first inclined member, and the other inclined surface is inclined of the second inclined member. A cylindrical member which is engaged with the surface and is arranged coaxially with the holder so as to cover the taper member, and has a plurality of holes through which the taper member can project; When loosening the attachment, the second inclined member and the cylindrical member are engaged with each other, and the cylindrical member is moved in the axial direction of the holder, thereby moving the second inclined member against the compression means. The taper member is movable inward in the radial direction.

With this structure, in the bobbin holder of the present invention, the taper member has an outer peripheral surface on which the bobbin is tightly attached, and inclined surfaces at both ends of the inner peripheral surface. The surface engages with the outer peripheral inclined surface of the first inclined member fixed to the holder, and the inclined surface on the other end side engages with the outer peripheral inclined surface of the second inclined member provided slidably on the holder coaxially. And the compression means is engaged with the second inclined member.
Therefore, the number of the compression means of the fastening means can be reduced, and the compression force can be surely applied to each of the plurality of taper members, so that the fastening force of the bobbin can be stabilized.

With this construction, the bobbin holder of the present invention can reduce the number of compression means, and therefore the pressing force for loosening the tightness of the bobbin against the sum of the compression forces can be reduced, and the apparatus can be made compact. It is possible to provide a low cost device. Furthermore, since the bobbins at both ends are gripped with a tighter force that is 1.5 times that of the intermediate portion, it is possible to improve safety and reduce the vibration level.

Further, the bobbin holder of the present invention has a receiving member for receiving the reaction force of the compression means, and the receiving member and the first member.
The inclined member is arranged between each concave groove formed on the outer periphery of the holder and the cylindrical member, and is formed into a shape that can be divided or expanded and contracted in the circumferential direction of the holder so that it can be fitted into the concave groove. Have a configuration.

With this structure, the first inclined member and the receiving member can be easily attached to and detached from the concave groove.

Further, in the bobbin holder of the present invention, the receiving member is provided with a plurality of projecting members toward the second slanting member, and when loosening the bobbin, the projecting members are provided with the second slanting member. It is configured such that the second tilting member and the taper member are disengaged from each other and the axial movement of the taper member is restricted by penetrating the small hole formed in the hole and contacting the taper member.

With this structure, when the bobbin is loosened, the protruding member provided on the inclined member pushes the taper member in the direction opposite to the direction in which the bobbin is taken out, so that the bobbin is reliably taken out without being dragged by the bobbin. be able to.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of an embodiment of a bobbin holder according to the present invention, FIG. 2 is a detailed view of portion A of FIG. 1, and FIG. 3 is B of FIG.
FIG. In FIG. 1, the cylindrical support shaft 1 has a left end flange portion 1a fixed to and supported by a frame (not shown) of a winder by bolts 35.

A rotary shaft 2 is coaxially disposed in the hollow portion of the support shaft 1 and is rotatably supported via bearings 3 and 4. A portion 2a of the rotary shaft 2 is provided with a hole 5s of a holder 5 and a predetermined portion. Fitting with a margin, the tip of the rotary shaft 2 is tightened with a nut 6. The outer diameters of the bearings 3 and 4 are elastically supported by elastic bodies 7 and 8, and the bearing 3 is axially fixed by a retaining ring 33.

A connecting shaft 27 is rotatably supported on the left side of the rotating shaft 2 coaxially with the support shaft 1 via bearings 28 and 29, and the rotating shaft 2 and the connecting shaft 27 are connected by a shaft joint 26. ing. The outer diameters of the bearings 28 and 29 are elastically supported by elastic bodies 30 and 31, and the bearing 29 is axially fixed by a retaining ring 32.

A bobbin 10A is provided on the outer peripheral surface of the holder 5.
Tightening means 9A to 9I for holding the inner diameter of 10H to 10H and cylindrical members 11A to 11I are coaxially arranged in the holder 5 in the axial direction. The cap 1 is attached to the tip of the holder 5.
3 is fixed by bolts 15.

In the fastening means 9A to 9I, the first inclined member 16 is engaged with the groove 5a formed in the holder 5.

A spring receiver (receiving member) 1 is provided in the groove 5b.
7, the spring receiver 17 is provided with a plurality of needle-like portions 17a. A second tilting member 18 is disposed on the outer periphery 5c of the holder 5 so as to be movable in the axial direction, and the second tilting member 18 has a plurality of holes 18a corresponding to the needle portions 17a of the spring receiver 17. It is molded.

Springs 20 are engaged with the plurality of holes 18a and the needle-like portions 17a, respectively, and the second tilting member 18 is pressed leftward. Inclined surface 18 of the second inclined member 18
c and a tapered member 19 having inclined surfaces 19c and 19d that engage with the inclined surface 16b of the first inclined member 16 are provided, and the second member is pressed by the pressing force of the spring 20.
The tilting member 18 is moved to the left in FIG. 2 and engages with each of the tilting surfaces to expand the taper member 19 in the normal direction. Although the taper member 19 is made of resin (nylon, polyacetal, etc.) in this embodiment, it may be made of metal such as aluminum.

On the outer periphery of the holder 5 described above, a concave portion 5a formed by the first inclined member 16 and the spring receiver 17 on the outer periphery of the holder 5, a convex portion 16a of the first inclined member 16, a concave portion 5b and a convex portion of the spring receiver 17 are formed. The parts 17b are engaged with each other.

The first inclining member 16, the spring receiver 17, and the second inclining member 18 are each formed of a resin (nylon, polyacetal, etc.) in an annular shape so that one or more points on the circumference can be expanded and contracted. A U-shaped groove (Fig. 6) is formed in the. In the present embodiment, the molding is performed at three locations on the circumference. As another example, one slit (FIG. 7) may be formed on the circumference.

The tubular cylindrical member 11A is arranged at the left end of the holder 5 and slidably engages with the outer peripheral surface of the first inclined member 16. The cylindrical member 11A has an elongated hole 11b.
Are molded in three equal parts and are movable with the pin 14 fixed to the holder 5.

Following the above cylindrical member 11A, tubular cylindrical members 11B, 11C, 11D, 11E, 11F, 1
1G, 11H, and 11I are sequentially arranged side by side so as to be movable in the axial direction of the holder 5. In the following description, the cylindrical members 11A to 11I are simply referred to as the cylindrical member 11.

Reference numeral 11c denotes a concave portion formed on the cylindrical member 11, and when the bobbin 10 is loosened, the convex portion 18b formed on the second inclined member 18 is engaged to cause the second inclined member 18 to move.
Move to the right at.

In FIG. 3, reference numerals 11d and 11e denote a plurality of holes formed in the cylindrical member 11.
The convex portions 19a, 19 of the taper member 19 are passed through d, 11e.
b protrudes, and the convex portions 19a and 19b form the bobbin 10A to
The bobbin is gripped by engaging with the inner diameter of 10H.

In this embodiment, six taper members 19 are used on the same circumference, and the plurality of holes 11d and 11e are formed so as to divide the outer circumference of each cylindrical member 11 into six parts. Further, the connecting portion 19g of the convex portions 19a and 19b of the taper member 19 engages with the inner diameter portion of the cylindrical member 11f to prevent the taper member 19 from projecting beyond a predetermined amount.
The connecting portion 19g of the taper member 19 is formed in a U shape so as to have flexibility.

As another embodiment (not shown), an annular spring member is engaged with the U-shaped groove portion 19f and the taper member 19 is formed.
May contract toward the center of the holder 5.

The piston 21 has an O-ring 2 between the portions 1b and 1c formed on the end flange portion 1a of the support shaft 1.
Cylinder chamber C is formed by engaging through 2 and 23. A spring 24 for moving the piston 21 to the left side in FIG. 1 is arranged between the piston 21 and the annular member 34 that engages with the retaining ring 25 in the concave groove formed in the support shaft 1.

Next, the operation of the bobbin holder having the above structure will be described.

[Bobbin Tightening] The compressed air in the cylinder chamber C is discharged, and the piston 24 is moved leftward in FIG. 1 by the spring 24 to allow the cylindrical member 11A to move leftward, and the cylindrical members 11A to 11I. And the second tilting member 1
The engagement with the convex portion 18b of No. 8 is cut off (the second inclined member 18 becomes free from the cylindrical member 11).

Next, in this state, the second tilting member 18 is moved leftward in FIG.
The engaging portions (inclined surfaces 19c and 19d) of the taper member 19 slide with respect to the second inclined member 18 and the first inclined member 16 to expand the convex portions 19a and 19b of the tapered member 19 in the outer peripheral direction. As a result, the taper member 19 grips the inner diameter of the bobbin 10.

[0031]

[Loosening of Bobbin] Compressed air is supplied to the cylinder chamber C from the compressed air supply hole 1d of the support shaft 1 to move the piston 21 to the right in FIG. By the movement of the piston 21, the 21a portion engages with the end portion 11a of the cylindrical member 11A and pushes the cylindrical member 11A to the right, so that the cylindrical members 11B to 11B.
H moves to the right, the notch 11c formed in each cylindrical member 11 in FIG. 2 engages with the projection 18b of the second tilting member 18, and the second tilting member resists the spring 20. Move 18 to the right.

As described above, the second tilting member 18 moves to the right in FIG. 2 against the spring 20, and the taper member 19 with respect to the second tilting member 18 and the first tilting member 16.
The engaging portions (inclined surfaces 19c and 19d) of the above slide, and the taper member 19 is contracted in the inner diameter direction. In the present embodiment, the cylindrical members mounted in the axial direction of the holder 5 are not connected to each other, but they may be connected to each other by an engaging portion such as a protrusion.

Further, the method shown in FIG. 4 is effective in order to more surely loosen the bobbin. That is, a plurality of projecting members 17c different from the needle-shaped portion 17a are projectingly provided on the spring receiver 17, and the projecting members 17c penetrate through the small holes formed in the second inclined member 18 and the taper member 19 is formed. Abut. FIG. 5 shows a state in which the tip of the protruding member 17c is engaged with the cutout portion 19h of the taper member 19.

As a result, the taper member 19 is reliably contracted in the inner diameter direction of the holder 5 without being dragged by the bobbin 10 moving in the direction of the arrow X shown in FIG. 5, so that it does not hinder the removal of the bobbin 10. .

Although the needle-shaped portion 17a of the spring receiver 17 and the protruding member 17c are separate members in the embodiment shown in FIG. 4, the needle-shaped portion 17a and the protruding member 17c should be integrated as shown in FIG. Is also possible.

In the embodiment described above, when the bobbin is sagging, the cylindrical member 11 is pushed from the rear of the holder by the actuator (in this embodiment, the cylinder chamber C and the piston 21) arranged in the holder. A taper member may be provided so as to be pushed by an actuator provided in the hollow portion 36 of the section.

[0037]

As described above, according to the present invention, the number of compression means of the fastening means can be reduced as compared with the conventional one, and the compression force can be surely applied to each of the plurality of taper members. Since the bobbin can be applied, the tight binding force of the bobbin can be stabilized.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a bobbin holder according to the present invention.

FIG. 2 is a detailed view of part A of FIG. (It is also a cross-sectional view taken along line FF in FIG. 4.)

3 is a view from the direction B in FIG.

FIG. 4 is a detailed view showing another example of the bobbin holder according to the present invention and showing an example of a component structure for more surely loosening the bobbin.

5 is a sectional view taken along line EE of FIG.

FIG. 6 is a diagram showing an example of a shape that allows a first tilting member 16, a spring receiver 17, and a second tilting member 18 to expand and contract.

FIG. 7 is a diagram showing another example of a shape that allows the first tilting member 16, the spring receiver 17, and the second tilting member 18 to expand and contract.

FIG. 8 is a detailed view showing an example in which the needle-shaped portion of the spring receiver and the protruding member are integrated.

[Explanation of symbols]

5 holder 9A-9I Fastening means (fastening member) 10A-10I Bobbin 11A-11H Cylindrical member 16 First tilting member 17 Spring holder 17a Needle portion 17c protrusion 18 Second tilting member 19 Tapered member 20 springs

Claims (3)

[Claims] 1. A cylinder in which a plurality of fastening members are arranged on the outer periphery of a holder, and the fastening members are axially compressed to expand in the outer diameter direction of the holder and coaxially mounted on the holder. In a bobbin holder of a winder in which the inner diameter of a bobbin is tightly attached, A) the fastening member is fixed to the holder and has a first inclined member having an inclined surface on the outer periphery thereof; A second slanting member slidably provided on the outer circumference of the slanting surface, a taper member disposed between the first and second slanting members and the bobbin, and the second slanting member of the holder. Compression means for pressing in the axial direction to expand the taper member in the normal direction, and B) the taper member has an outer peripheral surface on which the bobbin is tightly attached, and inclined surfaces at both inner peripheral ends. , And the inclined surface on one end side of the inclined surface is the first C) A cylindrical member that is engaged with the inclined surface of the inclined member, the other inclined surface engages with the inclined surface of the second inclined member, and C) is arranged coaxially with the holder so as to cover the taper member. Has a plurality of holes through which the taper member can project, and D) engages the second tilting member and the cylindrical member when loosening the bobbin, and holds the cylindrical member in the holder. A bobbin holder for a winder, wherein the second tilting member is moved against the compression means by moving the taper member inward in the radial direction by moving the taper member inward in the radial direction. 2. A receiving member for receiving a reaction force of the compressing means, wherein the receiving member and the first inclined member are arranged between respective concave grooves formed on the outer periphery of the holder and the cylindrical member. The bobbin holder according to claim 1, wherein the bobbin holder has a shape that can be divided or expanded and contracted in a circumferential direction of the holder so that the holder can be fitted into the groove. 3. The receiving member is provided with a plurality of projecting members toward the second inclined member, and the projecting members are bored in the second inclined member when loosening the bobbin. By making contact with the taper member through the small hole formed therein, the engagement between the second inclined member and the taper member is released and the axial movement of the taper member is restricted. The bobbin holder according to Item 1.