JP2001303379A - Press roller driving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a moving roller certainly make a following rotation while shaking after a press roller is mounted on the moving roller. SOLUTION: This press roller-driving device has at least two moving rollers containing at least one truncated cone-shaped moving roller axially supported to a supporting shaft through a spherical bearing and the truncated cone-shaped moving roller is subjected to the following rotation and shaken by mounting the press roller on the moving rollers and rotating the press roller. The press roller-driving device is equipped with a regulating member having a contact part at which the truncated cone-shaped moving roller can be touched and regulating an inclination of the truncated cone-shaped moving roller by the contact part in the vicinity of the truncated cone-shaped moving roller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for driving a press roller, and more particularly to a drive device having a function of moving the press roller in the axial direction.

[0002]

2. Description of the Related Art When a so-called warp sheet in which a number of warp yarns are arranged in a sheet shape is wound into a predetermined warp beam, a press roller driving device that presses a press roller in contact with a winding surface is disclosed in, for example, Japanese Unexamined Patent Publication No. No. 170130. The press roller driving device includes at least two rolling rollers including at least one frustoconical (frustoconical) rolling roller supported by a support shaft via a spherical bearing.
The press roller is placed on the two rolling rollers.

In the above-described press roller driving device, the frusto-conical rolling roller is driven to rotate by the rotation of the press roller and swings. That is, the press roller in the pressed state is driven by the rotation of the warp beam driven to be wound up, and the frustum-shaped rolling roller on which the press roller is placed is driven and rotated by the rotation of the press roller. With such a driven rotation, an oscillating motion in which the rotation axis oscillates in the front-rear direction of rotation is generated. Further, with the swinging motion and the driven rotation of the truncated cone-shaped rolling rollers, a restoring force for returning the truncated cone-shaped rolling rollers to the original state acts on the truncated-conical rolling rollers. The mechanism of generating the oscillating motion of the truncated conical rolling rollers is described in JP-A-9-170130 and is not described in detail, but the outline of such a mechanism is considered as follows. . When the press roller is placed on the rolling roller, the frusto-conical rolling roller receives the pressing force from the press roller, the rotation axis is inclined, and the rolling roller is in surface contact with the press roller. When the press roller is driven to rotate, the rotation axis of the frusto-conical rolling roller gradually tilts due to a difference in peripheral speed at a contact portion between the press roller and the frusto-conical rolling roller. Next, with the inclination of the rotation axis of the frusto-conical rolling roller, the contact point with the press roller moves to a portion having a large diameter dimension, so that the rotational resistance of the frusto-conical rolling roller gradually increases, The acting force due to the increase in the resistance is generated as an acting force (restoring force) in the direction of returning the inclination of the rotation axis to the original direction, and the inclination of the rotation axis of the frusto-conical rolling roller is gradually inclined in the opposite direction. Following the rotation, the contact state returns from the point contact to the surface contact. It is considered that as a result of these repetitions, a rocking motion is continuously generated. The range of the oscillating motion of the frusto-conical rolling roller is the degree (angle) of the so-called “inclination of the frusto-conical rolling roller” which is the inclination of the central axis of the frusto-conical rolling roller with respect to the center axis of the press roller. Depends on

[0004] The frusto-conical rolling roller generates an operating force to move the press roller to one side in the axial direction with the swinging motion. By this acting force, the press roller rotates while being in contact with the inner facing surface of the beam flange. Therefore, the press roller and its driving device are configured so that an action force for moving the pair of press rollers toward the inner facing surface of the beam flange is generated, and each press roller abuts on the inner facing surface of the beam flange. When rotated in this state, it is possible to produce a high-quality warp beam in which a desired winding hardness is maintained over the entire width (length in the axial direction) of the beam.

[0005]

In the above-described press roller driving device, the truncated conical rolling roller is supported by the support shaft via the spherical bearing, so that when the press roller is mounted on the rolling roller, In some cases, the truncated conical rolling rollers are excessively inclined.

In such a state, even if the press roller is placed on the rolling roller and rotated, the force acting on the frustoconical rolling roller itself due to the inclination of the frustoconical rolling roller is smaller than in the normal state. It changes greatly. For example, the restoring force described above does not act due to an increase in the rotational resistance of the frustoconical rolling roller due to an excessive inclination. As a result, the frusto-conical rolling roller does not generate not only the swinging motion but also the driven rolling. According to the study of the present inventors, the magnitude of the acting force (restoring force) generated by the rocking motion depends on design parameters such as the taper of the truncated conical rolling roller. It has been recognized from experience, and it has been confirmed that there is an individual tilt range of the rotation axis in which the oscillating motion of the frusto-conical rolling roller continuously occurs in accordance with the acting force.
At the time of placing the press roller, if the inclination of the frustum-shaped rolling roller is regulated in advance so that at least the inclination of the rotation axis of the frustum-shaped rolling roller does not exceed this range, the winding operation can be performed. It was confirmed that the rocking motion always occurred continuously.

Therefore, in the press roller driving device, it is important that after the press roller is mounted on the rolling roller, the rolling roller surely swings and is driven to rotate.

[0008]

A press roller driving device according to the present invention has at least two rolling rollers including at least one truncated conical rolling roller supported by a support shaft via a spherical bearing. Then, a press roller is placed on the rolling roller, and the truncated conical rolling roller is driven to rotate by the rotation of the press roller to swing. Such a press roller driving device includes a regulating member having a contact portion with which the frustoconical rolling roller can contact, and a regulating member for regulating the inclination of the frustoconical rolling roller by the contact portion. Provided near the trapezoidal rolling rollers.

[0009] The inclination of the frusto-conical rolling roller is restricted within a predetermined angle by a restricting member, and when the press roller is newly mounted on the rolling roller, the frusto-conical rolling roller is greatly inclined. There is no. For this reason, after receiving the press roller, the frusto-conical rolling roller surely swings and is driven to rotate, thereby reliably generating an action force for moving the press roller in a predetermined direction.

The contact portion includes a portion or a surface that restricts the inclination of the frusto-conical rolling roller to a range where the oscillating motion can be generated without hindering the oscillating motion of the frusto-conical rolling roller. can do.

In a preferred embodiment, the contact portion is capable of contacting either one of both side surfaces in the axial direction of the frusto-conical rolling roller, and is capable of contacting the regulating member, or a part thereof. It is.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS. 1 to 3, a press roller driving device 10 receives a pair of press rollers 12, and uses both press rollers 12 as a device for pressing against a winding surface 16 of a warp beam 14. Can be

The beam 14 is rotatably received on a frame (not shown) of the warp beam forming device around an axis extending in the horizontal direction, and is rotated about the axis via rotation driving means (not shown). While being driven, the warp sheet is wound up to a predetermined diameter between the beam flanges 18 attached to both ends of the winding core (not shown). One end surface 12a of each press roller 12 is formed in a hemispherical shape. Instead of making the one end surface 12a semi-spherical, the columnar member having an appropriate hardness made of a material such as synthetic resin and being formed into a columnar shape at the end of the press roller 12 is formed. The entire end surface may be brought into contact with the inner side surface 18a of the beam flange 18.

The press roller driving device 10 includes a pair of pusher arms 20 assembled at one end to the frame so as to be angularly rotatable about an axis extending in the horizontal direction, and a horizontal at the other end of each arm 22. Press roller bracket 22 pivotally mounted about an axis extending in the horizontal direction, and three rolling rollers 24, 26, mounted on each bracket 22 so as to be rotatable about an axis extending parallel to the horizontal direction. 28.

The arm 20 is angularly rotated synchronously around the axis by an air cylinder (not shown). Each bracket 22 and the rolling roller 26 located at the center are supported by the corresponding arm 20 by a common support shaft 30. The rolling rollers 24 and 28 are supported by the corresponding brackets 22 by supporting shafts 32 and 34, respectively, and have substantially the same (diameter) dimensions.

One of the support shafts 30, 32, 34 is
As shown in FIG. 3, a bolt 36 having a head and a collar 38 through which the bolt 36 passes can be constructed. At the tip of each bolt 36, a washer 40 is arranged, and a nut 42 is screwed.
However, each support shaft may be a common bolt or pivot.

Of the three rolling rollers supported by each bracket 22, the rolling roller 26 located at the center is a general ring-shaped (wheel-shaped) rolling roller, and is a general radial bearing. To the corresponding support shaft 30.

On the other hand, the rolling rollers 24 and 28 located at both ends of the bracket 22 have a truncated cone shape (a truncated cone shape).
And a so-called frusto-conical rolling roller having an outer peripheral surface, and assembled to the corresponding support shafts 32 and 34 by spherical bearings 44, respectively. Each of the truncated conical rolling rollers has a spherical inner surface corresponding to the receiving surface of the spherical bearing 44. More specifically, the bearing has a spherical bearing in which the outer ring of the bearing is straight, and the inside thereof is formed as a spherical surface.

The support shafts 30, 32, 34 extend in a horizontal direction parallel to each other and to the press roller 12. The interval between the support shafts 30 and 32 and the interval between the support shafts 30 and 34 are substantially the same. The vertex angles (taper angles) of the outer peripheral surfaces of the rolling rollers 24 and 28 are the same.

One press roller 12 has rolling rollers 24,
The other press roller 12 is received by rolling rollers 26 and 28. Same bracket 22
The rolling directions of the rolling rollers 24 and 28 which are received at the outer surfaces of the rolling rollers 24 and 28 are reversed. However, the truncated conical rolling rollers receiving the same press roller 12 have the same inclination direction on the outer peripheral surface. More specifically, the direction and taper of each inclination of the frusto-conical rolling roller are determined in consideration of the direction and magnitude of the force acting on the press roller in the axial direction.

The rolling rollers 24, 26, and 28 have at least a part of their outer surfaces in contact with a predetermined press roller 12. For this reason, the ring-shaped rolling roller 26 is driven to rotate with the rotation of the corresponding press roller 12. Further, the frusto-conical rolling rollers 24 and 28 not only follow but rotate but also oscillate with the rotation of the corresponding press roller 12.

As representatively shown in FIG. 3, a pair of engaging members, that is, regulating members 46 are formed by the frusto-conical rolling rollers 2.
The support shafts 32 and 34 supporting the support shafts 4 and 28 are disposed respectively. Each restricting member 46 has a disk shape in the illustrated example, and has substantially the same diameter as the corresponding frustoconical rolling roller.

The pair of regulating members 46 are mounted on the corresponding support shafts so that the corresponding frustoconical rolling rollers are located between the two regulating members 46. Each regulating member 46 is
It has a contact portion, that is, a contact portion 46a with which the corresponding frustoconical rolling roller can contact. In the illustrated example, each contact portion 46a is an inner surface on the side of the frustoconical rolling roller formed to extend in the radial direction of the support shafts 32 and 34.

The gaps L1 and L2 between each regulating member 46 and the corresponding frusto-conical roller are formed so that the contact portion 46a does not hinder the above-described swinging motion of the corresponding frusto-conical roller. The inclination of the corresponding frusto-conical rolling roller is restricted to a predetermined angle range in which the above-mentioned oscillating motion can occur. The inclination of the truncated conical rolling roller refers to the inclination of the central axis of the truncated conical rolling roller with respect to the central axis of the press roller. When the warp is wound into a warp beam, the press roller 12 is placed on the press roller driving device 10. In the present invention, a part of the frusto-conical rolling rollers 24 and 28 corresponds to the regulating member 4.
By contacting the corresponding contact portions 46a of No. 6, the angle is restricted within a predetermined angle range. For this reason, when the press roller 12 is placed on the rolling rollers 24, 26, 28, the truncated conical rolling rollers 24, 28 receive a force from the press roller 12 and make linear contact or surface contact with the press roller 12. Position, and as shown in FIG.
A predetermined gap is maintained between the contact portion 26a and the corresponding contact portion 26a.

Thereafter, the press roller driving device 10 rotates the arms 20 and 20 angularly while receiving the two press rollers 12 on a predetermined group of rolling rollers, so that the two press rollers 12 On the winding surface 16. When the beam 14 is rotated in the direction of arrow 50 in FIG. 1 in this state, the press roller 12 is rotated in the direction of arrow 52, and the rolling rollers 24, 26, 28 are driven to rotate in the direction of arrow 54.

However, each frusto-conical rolling roller is mounted on the corresponding support shaft by the spherical bearing 44, and the acting force acting on the frusto-conical rolling roller changes due to the inclination. Therefore, the oscillating motion is performed with the above-described driven rotation.

The oscillating motion of the frusto-conical rolling rollers 24 and 28 and the operation and effect obtained thereby are described in detail in Japanese Patent Application Laid-Open No. 9-170130 already mentioned as one of the prior arts. , And detailed description thereof will be omitted.

By the above-described swinging motion, each of the truncated conical rolling rollers 24 generates a force (indicated by an arrow 56 in FIG. 1) for moving the corresponding press roller 12 to one side in the axial direction. The frusto-conical rolling rollers 28 generate a force (indicated by an arrow 58 in FIG. 1) for moving the corresponding press roller 12 to the other in the axial direction. This allows
Each of the press rollers 12 has a hemispherical end face 12 a pressed against the corresponding inner end face 18 a of the beam flange 18.

As described above, when the press roller 12 is rotated in contact with the inner facing surface 18a of the beam flange 18, the desired winding hardness is maintained over the entire width (length in the axial direction) of the beam 14. Are produced.

The range of the oscillating motion of the rolling rollers 24 and 28 is as follows.
It depends on design parameters such as the angle of the taper of the truncated conical rolling roller and the material of the truncated conical rolling roller and the regulating member (particularly, the contact portion). Therefore, the size of the gap between the contact portion 46a and the truncated conical rolling rollers 24, 28 is determined in consideration of the swing range of the truncated conical rolling rollers.

Each frusto-conical rolling roller and the corresponding contact portion 4
The gaps L1 and L2 between the rollers 6a and 6a can be set in a range of 4 mm to 1 mm when the taper of the truncated conical rolling rollers is 1/10 to 1/200, for example. Rolling roller 2
The materials of 4, 26, and 28 are appropriately determined, but it is preferable to use a material having appropriate elasticity, more specifically, a synthetic resin, such as a synthetic resin, rather than a rigid body.

When replacing the beam 14, when removing the press roller 12 from the rolling rollers 24, 26, 28, and
When the press roller 12 is placed on the rolling rollers 24, 26, and 28, the rolling rollers 24, 26, and 28 are retracted by the arm 20 to a position where the press roller 12 is far away from the beam 14.

The press roller 12 has rolling rollers 24, 26,
While being disengaged from 28, the frustoconical rolling rollers 24 or 28 tend to tilt too much. However, such inclination of the frusto-conical rolling rollers 24 or 28 is caused by the contact portion 4 of the regulating member 46 corresponding to a part of the frusto-conical rolling rollers 24 or 28.
By abutting on 6a, it is regulated within a predetermined angle range.

For this reason, the press roller 12 is
4, 26, 28, the rolling rollers 24, 28
Upon receiving the force from the press roller 12, the press roller 12
And a predetermined gap is formed between the rolling rollers 24, 28 and the corresponding contact portion 46a as shown in the figure.

The contact portion 46a of the restricting member 46 may be arranged corresponding to the range in which the truncated conical rolling roller swings.
It can be arranged at a position beyond the swing range. In particular, in the latter case, the rolling rollers 24 and 28 surely follow and rotate with the rotation of the press roller 12, and swing reliably with the follow rotation.
2 reliably generates an action force for moving the member 2 in a predetermined direction.

As a result, during the winding of the warp sheet around the beam 14, the rolling rollers 24, 28 do not contact the regulating member 46, although they do oscillate, so that the rolling rollers 24, 2
The wear of No. 8 is remarkably small, and the life is prolonged.

As described above, the position of the contact portion 46a does not hinder the oscillating motion of the rolling rollers 24, 28,
In addition, it is determined that the inclination of the rolling rollers 24 and 28 is restricted to an angle range in which the oscillating motion can occur.

Instead of using the contact portion 46a as the inner surface of the regulating member 46, another portion such as a projecting portion may be used.
Instead of using the disc-shaped spacing piece as the regulating member, a contact portion may be formed at a predetermined location of each bracket 22 and that location may be used as the regulating member. An engaging member that comes into contact with the truncated conical rolling roller may be disposed only when the press roller is mounted, and the restricting member may be removed after the press roller is mounted.

Instead of arranging the regulating members on both sides of the truncated conical rolling rollers, they may be arranged on only one of the truncated conical rolling rollers. Instead of forming the contact portion on the side surface of the truncated conical rolling roller, it may be formed on the outer peripheral surface (rotating peripheral surface) of the truncated conical rolling roller. In either case, the regulating member is provided near the truncated conical rolling roller.

The present invention is limited to the above-described embodiment, and can be variously modified without departing from the spirit of the present invention.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a press roller driving device according to the present invention.

FIG. 2 is a view taken along line 2-2 in FIG.

FIG. 3 is a view taken along line 3-3 in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Press roller drive device 12 Press roller 14 Warp beam 16 Winding surface 18 Beam flange 20 Pusher arm 22 Press roller bracket 24, 28 Frustoconical rolling roller 26 Ring rolling roller 30, 32, 34 Support shaft 44 Spherical bearing 46 Control member 46a Contact part

Claims (2)

[Claims] At least two rolling rollers including at least one frustoconical rolling roller supported on a support shaft via a spherical bearing, and a press roller is mounted on the rolling rollers. A press roller driving device, wherein the frustum-shaped rolling roller is driven to rotate and swing by the rotation of the press roller, and a regulating member having a contact portion with which the frusto-conical rolling roller can contact. And a restricting member for restricting the inclination of the frusto-conical rolling roller by the contact portion near the frusto-conical rolling roller. 2. The method according to claim 1, wherein the contact portion restricts the inclination of the frusto-conical rolling roller within a range in which the oscillating motion can be generated without hindering the oscillating motion of the frusto-conical rolling roller. Item 2. The driving device according to Item 1.