JPH085983Y2 - Bobbin holder in a spinning winder - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bobbin holder for a spinning winder that winds a yarn spun from a spinning machine at high speed, the bobbin holder detachably holding a bobbin on which the yarn is wound. Regarding

[0002]

2. Description of the Related Art Conventionally, as a bobbin holder in this type of take-up winder, one shown in FIG. 5 has been known. In FIG. 5, the bobbin holder 1 mainly includes a rotating cylinder 2, a cap 3, a spacer ring 4 as a rigid ring, and an elastic ring 5 as an elastic material.

The rotary cylinder 2 serves as a base material for holding the bobbin 6, and is fixed to a drive shaft 8 by a rib 7 in the rotary cylinder 2. The drive shaft 8 is axially supported by a fixed cylinder 9 inserted in the rotary cylinder 2 via a bearing 10. A built-in motor 11 is attached to the end of the drive shaft 8. As described above, the rotary cylinder 2 is structured to be rotated at high speed by the built-in motor 11.

A spacer ring (rigid body ring) 4 and an elastic ring (elastic material) 5 are alternately loosely fitted around the outer circumference of the rotary cylinder 2. The spacer ring 4 is a cylinder of aluminum material, and the outer circumference thereof supports the inner diameter of the bobbin 6. The elastic ring 5 is a rubber material having a substantially rectangular cross section, and metal plates 12 are adhered to both ends thereof as shown in FIG. The elastic ring 5 is via the spacer ring 4,
When it receives a compressive force in the axial direction, it expands in the inner and outer radial directions. By this expansion deformation in the inner and outer radial directions, the elastic ring 5 is brought into close contact with and integrated with the outer circumference of the rotary cylinder 2 and the inner circumference of the bobbin 6, and the bobbin 6 is held concentrically with the rotary cylinder 2 to provide a rotational driving force. To communicate.

The cap 3 is a member that is movably inserted into the tip of the rotary cylinder 2 and that compresses or releases the elastic ring 5 via the spacer ring 4. This cap 3
The piston 13 and the cylinder 14 at the tip of the rotary cylinder 2 are
It constitutes an actuator as a compression means. Normally, a spring 15 is provided between the piston 13 and the cylinder 14.
And the cap 3 compresses the elastic ring 5 via the spacer ring 4 (see the upper half of the cross-sectional view of FIG. 5). Then, when compressed air is introduced into the right chamber of the piston 13 from the air hole 16 that fits through the center of the drive shaft 8, the cylinder 14 moves to the left and releases the elastic ring 5 (the sectional view of FIG. 5). See the bottom half).

The bobbin holder 1 in the conventional take-up winder having the above structure operates as follows. First, compressed air is introduced into the right chamber of the cylinder 14, the piston 13, that is, the cap 3 (compressing means) moves to the left, and the elastic ring 5 is released. Then, the bobbin 6 is inserted from a bobbin mounting device (not shown). At this time, the elastic ring 5 is in the released state with the outer diameter still small,
The bobbin 6 is mounted by sliding on the spacer ring 4 and is supported on the spacer ring 4. Then, when compressed air in the right chamber of the cylinder 14 is discharged, the repulsive force of the spring 15 causes the piston 13, that is, the cap 3 (compression means) to move to the right, and the elastic ring 5 is compressed via the spacer ring 4. .

When the elastic ring (elastic material) 5 is compressed,
It expands in the direction of the inner and outer diameters and comes into close contact with the inner diameter of the bobbin 6 and the outer diameter of the rotary cylinder 2 to be integrated. Then, the rotational force of the rotary cylinder 2 is transmitted to the bobbin 6 so that the yarn is wound.

[0008]

In the bobbin holder 1 of the spinning winder described in the prior art, the elastic ring (elastic material) 5 is inserted from the starting end side of the rotary cylinder 2 through the spacer ring (rigid body ring) 4. It is sequentially compressed and expanded toward the terminal end. By the way, as shown in FIG. 6, when the elastic ring 5 is compressed with the bobbin 6 mounted on the bobbin holder 1, the elastic ring 5 expands in the inner and outer radial directions as shown by the dotted line. This compression / expansion does not uniformly occur for each elastic ring 5 arranged in the axial direction, and the compression / expansion is sequentially performed from the tip end as the pressure is sequentially transmitted from the tip end side on the left side of FIG. The elastic ring 5 that has been compressed and expanded first comes into close contact with the inner circumference of the bobbin 6 and the outer circumference of the bobbin holder 1 first.

Then, frictional forces f ₁ and f ₂ between them are generated.
.. occurs, and the compressive force F decreases toward the right end side in FIG. The degree of reduction of the compression force F may reach up to nearly 50%. Therefore, there is a difference in holding the bobbin 6, which causes a problem that vibration or the like occurs due to insufficient holding force.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to make it possible to easily equalize the holding force of the bobbin in the length direction of the bobbin holder. It is intended to provide a bobbin holder for a winder.

[0011]

In the bobbin holder of the present invention for achieving the above object, a rigid ring and an elastic material are alternately mounted on the rotary cylinder along the axial direction of the rotary cylinder, and the elastic material is attached to the rotary cylinder. A spinning winder that holds a bobbin by providing a means for compressing in the axial direction at an end portion of the rotating cylinder, and compressing from the end portion to deform and deform each elastic material outward in a radial direction of the rotating cylinder. The gist of the bobbin holder is that the elastic modulus of each elastic member is set to be gradually smaller with increasing distance from the compression means in the axial direction to facilitate deformation. As a specific means for sequentially decreasing the elastic modulus, the elastic material is divided into a plurality of pieces in the circumferential direction of the rotary cylinder, and the circumferential length of the divided elastic material is changed, or the circumference of the divided elastic material is changed. There is a change in the number of orientations.

[0012]

Even if the compressive force of the compressing means is not transmitted in the axial direction as it is due to the frictional force of the elastic material and the compressive force gradually decreases from the start end side to the end side of the rotary cylinder, the elastic material Since the elastic modulus is gradually reduced, the amount of outward projecting deformation in the radial direction corresponding to the reduced compressive force is secured and averaged.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a view showing the structure of an elastic ring of the present invention, and FIG. 2 is an elastic ring (elastic material) in the axial direction of the bobbin holder.
It is a figure which shows the change degree of the length of the rubber. The overall structure of the bobbin holder is the same as that described with reference to FIG. 4, and the changes will be described below.

In FIG. 1, an elastic ring (elastic material) 20
Consists of a rigid short ring 21 and a rubber 22. The rigid short rings 21 are symmetrically arranged with a gap ε. The rigid short rings 21 are evenly arranged on the circumference (120 ° × 3 places in the illustrated example).
The notch 23 is machined. Then, the rigid short rings 21 having the notches 23 are symmetrically arranged, and a rectangular space is formed therebetween. The rubber 22 is integrally interposed in this space. As a method for integrating the rigid short ring 21 and the rubber 22, a method in which raw rubber is filled in the space between the rigid short rings 21 and molded and then integrally vulcanized,
There is a method of adhering the preformed rubber 22 to the side surface of the notch 23. In this way, the rigid short ring 21 and the rubber 22 are
In the elastic ring 20 into which the rubber is integrated, when the compressive force F acts between the left and right rigid short rings 21, the rubber 22 is compressed and deformed. Then, as the gap ε becomes smaller, the rubber 2
2 expands in the inner and outer diameter directions, and the rubber 22 comes into close contact with the inner diameter of the bobbin 6 and the outer diameter of the bobbin holder 1.

In FIG. 1B, the expansion amount δ of the rubber 22 with respect to the compression force F is inversely proportional to the length L if the rubber 22 has the same width, thickness and material. That is, in the case where the same circumference is arranged at three places, when L is long, the compressive stress is small and the expansion amount δ is small, and when L is short, the compressive stress is large and the expansion amount δ is large. Therefore, by changing the length L of the rubber 22, the elastic ring 20
Even if the overall width W is constant, the expansion amount δ can be set according to the compression force F.

FIG. 2 is a view showing a case in which the elastic ring 20 in which the length L of the rubber 22 is changed is applied to the bobbin holder 1. In FIG. 2A, when the elastic ring 20 is compressed by the cap 3 which is the compression means, the compressive force is sequentially transmitted from the elastic ring 20 on the starting end side close to the cap 3 to the elastic ring 20 on the terminal end side. An example of the compression force gradient at this time is shown in FIG. For example, when it is assumed that the compressive force at the starting end of the bobbin holder 1 is about 1/2 at the end, the length and number of the rubber 22 may be changed correspondingly.

In FIG. 2C, the length of the rubber 22a at the starting end (θ _{1 at an} angle)> the length of the rubber 22b in the middle (θ _{2 at an} angle)> the length of the rubber 22c at the end is θ ₃ Indicate the case. Θ ₃ = (1/2) × Θ ₂ , Θ ₂ = (3/4) × Θ ₁
Then, the compressive stress on the rubber 22 can be made substantially uniform. That is, the amount of elastic deformation of the rubbers 22a, 22b, 22c per unit length in the axial direction in the inner and outer radial directions / rubber 22
The elastic modulus defined by the compressive stress per unit area in the axial direction of a, 22b, 22c is 3/4 for rubber 22b and 1/2 for rubber 22a, assuming that rubber 22c is 1. It is set so as to become gradually smaller from the start end side to the end end side of the cylinder 2. As a result, FIG. 2 (b)
Even if there is a compression force gradient such as
The inner and outer radial protruding deformation amounts of b and 22c are averaged so as to be substantially equal.

FIG. 3 is a view showing another elastic ring (elastic material) 24. Sixteen circular notches 26 are formed between the rigid short rings 25, and circular rubbers 27 are integrally inserted therein. The rubber 27 has the same shape. As described above, in the case of using the circular rubber 27, change the number (for example, 16 → 12 →
8), the same result as changing the length of the rubber 22 in FIG. 1 can be obtained. Therefore, a large number of rubbers 2
Prepare the same elastic ring 24 where 7 is arranged, check the habit of the machine, and then remove the rubber 27 evenly on the circumference with a drill etc. at the site to make a different number of rubber 27 and make it the actual thing It can also be attached to the bobbin holder 1 together.

FIG. 4 is a view showing another elastic ring (elastic material) 28. The rigid short ring is made up of three members 29, 30, and 31, and the rigid short rings 29, 30, and 30, 3 are provided.
A gap ε and a rubber 32 are provided between the two.
When the elastic ring 28 is located at the joint between the bobbins 6, one elastic ring 28 is used to connect the two bobbins 6.
The edges of can be supported at the same time.

Next, the embodiment of the present invention described above operates as follows. In FIG. 2, after the bobbin 6 is mounted on the bobbin holder 1, the elastic ring (elastic material) 20 is compressed by the cap 3 as the compression means. At this time, even if there is a compression force gradient shown in FIG. 2B, the length of the rubber 22 corresponding to this compression force gradient is changed (Θ ₁ >).
Due to Θ ₂ > Θ ₃ ), the compressive stress of the rubber 22 becomes substantially constant, and the expansion amount δ in the protruding direction also becomes substantially constant. Therefore, the close contact of the bobbin 6 at the end of the bobbin holder 1 will not be insufficient. Further, since the rubber 22 is divided on the circumference and is partial, the compression force for obtaining the same expansion amount can be reduced, so that the entire structure can be simplified.

In the embodiment of the present invention, the so-called spindle drive type take-up winder in which the bobbin holder 1 for mounting the bobbin 6 is directly driven by the built-in motor 11 has been described. It is also applied to a so-called friction drive type take-up winder in which a bobbin is indirectly driven by a contacting Frixillo motor roller. Further, the present invention is not limited to the turret type in which two bobbin holders 1 project from one spinning winder, but also a spinning winder in which one bobbin holder 1 is fixedly projected to one spinning winder. The present invention is applied.

[0022]

The present invention is characterized in that the elastic modulus of each elastic member is gradually set smaller as it goes away from the compression means in the axial direction to facilitate deformation. Even if the compressive force gradually decreases from the starting side to the terminating side of the cylinder, the elastic modulus of the elastic material gradually decreases, so that the protruding deformation outward in the radial direction corresponding to the decreased compressive force. Since the amount is secured and averaged, and the difference in the bobbin holding force between the start end side and the end side of the bobbin holder is less likely to occur, the holding force of the bobbin particularly on the end side far from the compression means is insufficient. It is possible to prevent vibration and the like from occurring.

[Brief description of drawings]

FIG. 1 is a view showing a structure of an elastic ring (elastic material) of the present invention.

FIG. 2 is a view showing a mounting state of an elastic ring.

FIG. 3 is a view showing another elastic ring (elastic material) of the present invention.

FIG. 4 is a view showing still another elastic ring (elastic material) of the present invention.

FIG. 5 is a sectional view showing a structure of a bobbin holder in a conventional take-up winder.

FIG. 6 is a view showing a conventional elastic ring (elastic material).

[Explanation of symbols]

 1 Bobbin Holder 2 Rotating Cylinder 3 Cap (Compressing Means) 4 Spacer Ring (Rigid Ring) 6 Bobbin 20,24 Elastic Ring (Elastic Material) 21,25,29,30,31 Short Rigid Ring 22,27,32 Rubber

Claims (3)

[Scope of utility model registration request] 1. A rigid ring and an elastic material are alternately mounted on the rotary cylinder along the axial direction of the rotary cylinder, and
A spinning means for holding a bobbin by providing a means for compressing the elastic material in the axial direction at an end of the rotary cylinder, and compressing from the end causes each elastic material to project and deform outward in the radial direction of the rotary cylinder. The bobbin holder in the winder, wherein the elastic modulus of each elastic member is set to be gradually smaller as the elastic member moves away from the compression means in the axial direction to facilitate deformation. 2. The spin winding according to claim 1, wherein the elastic material is divided into a plurality of pieces in the circumferential direction of the rotary cylinder, and the elastic modulus is set to be successively smaller by changing the circumferential length of the divided elastic material. Bobbin holder in the machine. 3. The spin winding according to claim 1, wherein the elastic material is divided into a plurality of pieces in the circumferential direction of the rotary cylinder, and the elastic modulus is set to be successively smaller by changing the number of divided elastic materials arranged in the circumferential direction. Bobbin holder in the machine.