JP4264224B2 - Bobbin holder - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bobbin holder for mounting and fixing a bobbin in a winder that winds a thread 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 meters per minute.
[0002]
[Prior art]
In recent years, the yarn winding machine has a multi-end (attaching a plurality of bobbins to one bobbin holder), and the length of the bobbin holder tends to be long. As a recent technique of the bobbin holder in these winding machines, there are bobbin holders disclosed in Japanese Utility Model Laid-Open No. 6-67461 and Japanese Patent Laid-Open No. 7-41251.
[0003]
[Problems to be solved by the invention]
Among the prior arts described above, in the former bobbin holder disclosed in Japanese Utility Model Publication No. 6-67461, when a plurality of bobbins are fastened, a plurality of fastening members are provided on the support shaft and arranged at one end. The plurality of fastening members are compressed by the compression means provided. However, when there are more than eight ends, in this method, a plurality of fastening means are compressed by a single compression means, so that the fastening means located far from the compression means has a small axial pressing force due to sliding resistance. As a result, there is a problem that the bobbin is not sufficiently gripped, and the vibration level becomes high during winding or the winding shape is deteriorated.
[0004]
In the latter bobbin holder disclosed in Japanese Patent Laid-Open No. 7-41251, when a plurality of bobbins are fastened, a plurality of fastening members are arranged on a support shaft, and a compression means is provided for each of the fastening means. The fastening member was arranged and compressed alone. However, when a large number of bobbins are fastened to a single bobbin holder, the length of the bobbin is usually shortened. If two fastening members are arranged in the axial direction per bobbin, the bobbins are fastened. There was a problem that the space for arranging the members was 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. In addition, even if the pressing means is incorporated in a multi-stage manner, there is a problem that not only the cost is increased, but the apparatus becomes large and the natural frequency is lowered, so that the speed cannot be increased.
[0005]
OBJECT OF THE INVENTION
An object of the present invention is to solve the problems associated with the above-described conventional bobbin holder and to provide a long bobbin holder capable of attaching a multi-end bobbin.
[0006]
[Means for Solving the Problems]
In order to solve the above 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 so as to expand in the outer diameter direction of the holder. In the bobbin holder of the winder, the inner diameter of the cylindrical bobbin attached coaxially to the holder
A) The fastening member is fixed to the holder and has a first inclined member having an inclined surface on its outer periphery, a second inclined member provided on the holder so as to be slidable coaxially and having an inclined surface on the outer periphery, A taper member disposed between the first and second inclined members and the bobbin, and a compression means for pressing the second inclined member in the axial direction of the holder to expand the taper member in the normal direction. Have
B) The taper member has an outer peripheral surface to which the bobbin is fastened to the outer periphery, and inclined surfaces at both ends of the inner periphery, and the inclined surface on one end side of the inclined surfaces is an inclination of the first inclined member. And the inclined surface on the other end side engages with the inclined surface of the second inclined member,
C) The cylindrical member disposed coaxially with the holder so as to cover the tapered member has a plurality of holes through which the tapered member can protrude,
D) When loosening the bobbin, 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 resisting the compression means. The inclined member is moved so that the tapered member is movable inward in the radial direction.
[0007]
With this configuration, in the bobbin holder of the present invention, the taper member has an outer peripheral surface provided with two convex portions for fastening the bobbin on the outer periphery thereof, and inclined surfaces on both inner peripheral ends thereof. The inclined surface on one end side engages with the inclined surface on the outer periphery of the first inclined member fixed to the holder, and the inclined surface on the other end side of the second inclined member provided coaxially and slidably on the holder. The compression means is engaged with the second inclined member by engaging with the outer peripheral inclined surface. Therefore, as shown in FIG. 1 and FIG. 2, one inner peripheral end of the bobbin adjacent to one of the two convex portions of the taper member is fastened, and the other of the adjacent bobbins is adjacent to the other of the two convex portions. The inner peripheral end can be fastened. Thus, according to the present invention, two bobbins can be fastened with one taper member, so that the number of fastening means can be reduced and the number of compression means is also reduced .
In addition, each fastening means has a compression means for pressing the second inclined member in the axial direction of the holder and expanding the taper member in the normal direction, so that a compressive force is reliably applied to each of the plurality of taper members. Therefore, the tightening force of the bobbin can be stabilized.
[0008]
Also, with this configuration, the bobbin holder of the present invention can reduce the number of compression means, so that the pressing force for loosening the bobbin can be reduced against the sum of the compression forces, reducing the size and cost of the device. Can be provided. Furthermore, since the bobbins at both ends are gripped with an adhesive force 1.5 times that of the intermediate portion, safety can be improved and the vibration level can be reduced.
[0009]
The bobbin holder of the present invention has a receiving member that receives the drag force of the compression means, and the receiving member and the first inclined member are disposed between the respective recessed grooves formed on the outer periphery of the holder and the cylindrical member. In addition, the holder has a configuration that can be divided or expanded and contracted in the circumferential direction of the holder so that it can be fitted into the groove.
[0010]
With this configuration, the first inclined member and the receiving member can be easily detached from the concave groove.
[0011]
In the bobbin holder of the present invention, the receiving member is provided with a plurality of protruding members toward the second inclined member, and when the bobbin is loosened, the protruding member is formed in the second inclined member. By passing through the small hole and contacting the taper member, the engagement between the second inclined member and the taper member is released and the axial movement of the taper member is restricted.
[0012]
With this configuration, when the bobbin is relaxed, the bobbin can be reliably pulled out without being dragged by the bobbin by pushing the taper member in the direction opposite to the direction in which the bobbin is pulled out by the protruding member provided on the inclined member. .
[0013]
【Example】
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 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 a portion A in FIG. 1, and FIG. In FIG. 1, a cylindrical support shaft 1 has a left end flange portion 1a fixed to and supported by a bolt 35 on a frame (not shown) of a winder.
[0014]
A rotating shaft 2 is coaxially disposed in the hollow portion of the support shaft 1 and is rotatably supported through bearings 3 and 4. The 2 a portion of the rotating shaft 2 has a hole 5 s of the holder 5 and a predetermined shim allowance. The tip of the rotating shaft 2 is tightened with a nut 6 in the fitting. The outer diameters of the bearings 3 and 4 are elastically supported by elastic bodies 7 and 8, and the bearing 3 is fixed in the axial direction by a retaining ring 33.
[0015]
A connecting shaft 27 is 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 coupling 26. The outer diameters of the bearings 28 and 29 are elastically supported by elastic bodies 30 and 31, and the bearing 29 is fixed in the axial direction by a retaining ring 32.
[0016]
On the outer peripheral surface of the holder 5, fastening means 9 </ b> A to 9 </ b> I for gripping the inner diameters of the bobbins 10 </ b> A to 10 </ b> H and cylindrical members 11 </ b> A to 11 </ b> I are arranged coaxially and axially in the holder 5. A cap 13 is fixed to the tip of the holder 5 with a bolt 15.
[0017]
In the fastening means 9 </ b> A to 9 </ b> I, the first inclined member 16 is engaged with the groove 5 a formed in the holder 5.
[0018]
A spring receiver (receiving member) 17 is engaged with the groove 5 b, and a plurality of needle-like portions 17 a project from the spring receiver 17. A second inclined 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 inclined member 18 has a plurality of holes 18a corresponding to the needle-like portions 17a of the spring receiver 17. Molded.
[0019]
The springs 20 are engaged with the plurality of holes 18a and the needle-like portions 17a, respectively, and press the second inclined member 18 leftward. A tapered member 19 having inclined surfaces 19c and 19d that are engaged with the inclined surface 18c of the second inclined member 18 and the inclined surface 16b of the first inclined member 16 is disposed, and the second inclined surface by the pressing force of the spring 20 is disposed. The member 18 is moved to the left in FIG. 2 and engages with each of the inclined surfaces to expand the taper member 19 in the normal direction. In this embodiment, the taper member 19 is made of resin (nylon, polyacetal, etc.), but may be a metal such as aluminum.
[0020]
On the outer periphery of the holder 5 described above, the concave portion 5 a formed by the first inclined member 16 and the spring receiver 17 on the outer periphery of the holder 5, the convex portion 16 a of the first inclined member 16, the concave portion 5 b and the convex portion 17 b of the spring receiver 17. Each is engaged.
[0021]
The first inclined member 16, the spring receiver 17 and the second inclined member 18 are each formed in an annular shape from resin (nylon, polyacetal, etc.) and U-shaped so that one or more locations on the circumference can be expanded and contracted. The groove (FIG. 6) is formed. In the present embodiment, it is formed at three equal intervals on the circumference. As another embodiment, one slit (FIG. 7) may be formed on the circumference.
[0022]
The cylindrical cylindrical member 11 </ b> A is disposed on the left end of the holder 5 and slidably engages with the outer peripheral surface of the first inclined member 16. The cylindrical member 11 </ b> A is formed with three elongated holes 11 b equally arranged so as to be movable with the pins 14 fixed to the holder 5.
[0023]
Following the cylindrical member 11A, tubular cylindrical members 11B, 11C, 11D, 11E, 11F, 11G, 11H, and 11I are sequentially engaged with each other 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.
[0024]
Reference numeral 11c denotes a concave portion formed in the cylindrical member 11, and when the bobbin 10 is relaxed, it engages with a convex portion 18b formed in the second inclined member 18 to move the second inclined member 18 rightward in FIG. .
[0025]
In FIG. 3, reference numerals 11 d and 11 e are a plurality of holes formed in the cylindrical member 11, and the convex portions 19 a and 19 b of the taper member 19 protrude through the holes 11 d and 11 e, and the convex portions 19 a and 19 b The bobbins are gripped by engaging the inner diameters of the bobbins 10A to 10H.
[0026]
In this embodiment, six tapered members 19 are used on the same circumference, and the plurality of holes 11d and 11e are formed so that the outer circumference of each cylindrical member 11 is divided into six. 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 protruding more than a predetermined amount. In addition, the connection part 19g of the taper member 19 is shape | molded by U shape, and has a softness | flexibility.
[0027]
As another embodiment (not shown), an annular spring member may be engaged with the U-shaped groove 19 f so that the taper member 19 contracts toward the center of the holder 5.
[0028]
In addition, the piston 21 engages via O-rings 22 and 23 between 1b and 1c part shape | molded by the edge part flange part 1a of the spindle 1, and the cylinder chamber C is comprised. A spring 24 for moving the piston 21 to the left in FIG. 1 is disposed between the piston 21 and an annular member 34 that engages with a retaining ring 25 in a concave groove formed in the support shaft 1.
[0029]
Next, the operation of the bobbin holder having the above configuration will be described.
[Bobbin tightness]
The compressed air in the cylinder chamber C is discharged, the piston 21 is moved leftward in FIG. 1 by the spring 24, and the cylindrical member 11A can be moved leftward, so that each cylindrical member 11A-11I and the second inclined member 18 are moved. The engagement with the convex portion 18b is cut off (the second inclined member 18 becomes free from the cylindrical member 11).
[0030]
Next, in this state, the second inclined member 18 is moved leftward in FIG. 2 by the spring 20, and the engaging portion (inclined surface) of the tapered member 19 with respect to the second inclined member 18 and the first inclined member 16. 19c, 19d) slips to expand the convex portions 19a and 19b of the taper member 19 in the outer circumferential direction. As a result, the taper member 19 grips the inner diameter of the bobbin 10.
[0031]
[Loosening of bobbins]
Compressed air is supplied from the compressed air supply hole 1d of the support shaft 1 to the cylinder chamber C, and the piston 21 is moved rightward in FIG. When the piston 21 moves, the portion 21a 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 11H move to the right. In FIG. The notch portion 11 c formed in 11 engages with the convex portion 18 b of the second inclined member 18 and moves the second inclined member 18 to the right against the spring 20.
[0032]
As described above, the second inclined member 18 moves to the right in FIG. 19c, 19d) slips, and the taper member 19 is reduced 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 may be connected to each other by an engaging portion such as a protrusion.
[0033]
Further, the method shown in FIG. 4 is effective in order to more reliably perform bobbin relaxation. That is, a plurality of projecting members 17 c different from the needle-like portion 17 a are projected from the spring receiver 17, and the projecting member 17 c passes through a small hole drilled in the second inclined member 18 and tapers 19. Abut. FIG. 5 shows a state in which the tip of the projecting member 17c is engaged with the notch 19h of the taper member 19.
[0034]
As a result, the taper member 19 is reliably reduced 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.
[0035]
In the embodiment shown in FIG. 4, the needle-like portion 17a and the protruding member 17c of the spring receiver 17 are separate members, but the needle-like portion 17a and the protruding member 17c can be integrated as shown in FIG. is there.
[0036]
In the embodiment described above, when the bobbin is slackened, the cylindrical member 11 is pushed from the rear part of the holder by the actuator (the cylinder chamber C and the piston 21 in this embodiment). A taper member may be disposed so as to be pushed by an actuator disposed in the portion 36.
[0037]
【The invention's effect】
As described above, according to the present invention, the number of the compression means of the fastening means can be reduced as compared with the prior art, and a compression force can be reliably applied to each of the plurality of taper members. For this reason, the tightening force of the bobbin can be stabilized.
[Brief description of the drawings]
FIG. 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 a part A in FIG. (It is also an FF cross-sectional view of FIG. 4)
FIG. 3 is a view as seen from the direction B in FIG. 2;
FIG. 4 is another embodiment of the bobbin holder according to the present invention, and is a detailed view showing an example of a component configuration for more surely relaxing the bobbin.
FIG. 5 is a cross-sectional view taken along line EE of FIG.
FIG. 6 is a view showing an example of a shape that allows the first inclined member 16, the spring receiver 17 and the second inclined member 18 to be expanded and contracted.
FIG. 7 is a view showing another example of a shape that allows the first inclined member 16, the spring receiver 17, and the second inclined member 18 to be expanded and contracted.
FIG. 8 is a detailed view showing an example in which a needle-like portion of a spring receiver and a protruding member are integrated.
[Explanation of symbols]
5 Holders 9A to 9I Fastening means (fastening members)
10A to 10I Bobbins 11A to 11H Cylindrical member 16 First inclined member 17 Spring receiver 17a Needle-like portion 17c Projecting portion 18 Second inclined member 19 Taper member 20 Spring

Claims (1)

A plurality of fastening members are arranged on the outer periphery of the holder, and the inside diameter of a cylindrical bobbin that is coaxially attached to the holder by compressing the fastening members in the axial direction and expanding in the outer diameter direction of the holder In the bobbin holder of the winder
A) The fastening member is fixed to the holder and has a first inclined member having an inclined surface on the outer periphery thereof, and is provided on the holder so as to be slidable coaxially, and on the outer periphery thereof , facing the inclined surface of the first inclined member. A second inclined member having an inclined surface, a tapered member disposed between the first and second inclined members and the bobbin, and pressing the second inclined member in the axial direction of the holder to use the tapered member. Compression means for expanding in the linear direction,
B) The taper member has an outer peripheral surface provided with two convex portions for attaching a bobbin to the outer periphery thereof, and inclined surfaces at both ends of the inner periphery, and an inclined surface on one end side of the inclined surfaces. Is engaged with the inclined surface of the first inclined member, the inclined surface on the other end side is engaged with the inclined surface of the second inclined member,
C) The cylindrical member disposed coaxially with the holder so as to cover the tapered member has a plurality of holes through which the convex portions of the tapered member can protrude,
D) When loosening the bobbin, 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 resisting the compression means. A bobbin holder for a winder, wherein an inclined member is moved so that the tapered member can be moved radially inward.

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