WO2003045827A1

WO2003045827A1 - Bobbin holder

Info

Publication number: WO2003045827A1
Application number: PCT/JP2002/012070
Authority: WO
Inventors: Takami Sugioka; Noriki Ishimaru
Original assignee: Tstm Co., Ltd.
Priority date: 2001-11-28
Filing date: 2002-11-19
Publication date: 2003-06-05
Also published as: JP3998473B2; KR100568503B1; CN100343147C; CN1596219A; JP2003165673A; KR20040061013A; AU2002365356A1

Abstract

A bobbin holder comprising a release means for pressing a push member while resisting against a compression means for grasping a bobbin and means for pulling the holder reversely to the pushing direction of the release means at the time of loosening a chuck member. Since a pressing force and a pulling force act simultaneously onto the holder at the time of releasing the bobbin, a thrust force acting on the bearing of a bobbin holder rotary shaft is canceled thus protecting the bearing against damage or shortening of the lifetime.

Description

TECHNICAL FIELD The present invention relates to a bobbin holder in a winder for winding a yarn, and more particularly to an increase in speed and an improvement in durability of a bobbin holder.

Light

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In recent years, the number of yarns simultaneously wound on the bobbin holder of the winding machine has tended to increase to 12 to 16, and the sum of the forces of the compression means for pressing the chuck member holding the bobbin is increasing. Has grown to 500-150 kg. Conventionally, as described in Japanese Unexamined Utility Model Publication No. 60-443667, when the chuck member is loosened and the bobbin is released, a compression means for expanding the chuck member is provided on the mounting side of the pobin holder. A cylinder for pressing against is provided. In the prior art, when the chuck member is axially pressed by a cylinder for pressing against a compressing means for expanding the chuck member, the pressing force supports the holder via the holder. Being received. As in recent years, the number of yarns simultaneously wound on one bobbin holder has increased, and the sum of the forces of the compression means has increased. There was a problem that indentations occurred on the surface and the bearing life was significantly shortened. DISCLOSURE OF THE INVENTION A holder rotatably supported by a bearing, an expandable chuck member that grips a bobbin on the outer periphery of the holder, and a compression unit that expands the chuck member and grips the bobbin. When releasing and loosening the bobbin, the pressing means for pressing the compression means is used. A bobbin holder provided on a mounting portion side of the holder and having release means for pressing the pressing member, wherein when the chuck member is loosened, the pressing member is pressed against the compression means by the release means. By disposing the pulling means for pressing the holder and pulling the holder in the direction opposite to the pressing direction of the release means, the problem in the conventional technology can be solved. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a pobin holder according to an embodiment of the present invention, showing a state where a bobbin is gripped. FIG. 2 is a cross-sectional view of the bobbin holder according to the embodiment of the present invention, showing a state where the bobbin is released. FIG. 3 is a detailed view of a portion D in FIG. 1 and shows the action and relationship of a force when the bobbin is released from a gripped state. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a state in which an inner diameter of a bobbin is gripped by a chuck member according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing a state in which the inner diameter of the bobbin is released from the chuck member. In FIG. 1, the supporter 1 protrudes in a state where a flange portion 1a is fastened to a frame (not shown) by a bonolet 24. Bearings 4 and 5 are engaged with the hollow portion 1b of the supporter 1, and the rotating shaft 2 is rotatably supported. A driving force transmitting member 14 and a driving shaft 15 are connected to the right side of the rotating shaft 2, and a holder 6 is press-fitted to the left side of the rotating shaft 2 via a protruding portion 3 of the rotating shaft 2. Are provided with chuck members 12a to 12h for gripping the inner diameters of the bobbins 13a to 13d. The chuck member includes an annular tapered member 9, a plurality of (six in this embodiment) chuck pieces 8 divided on a circumference, and a plurality of compression coil springs 25. The inner diameter of the tapered member 9 is engaged with the outer diameter of the holder 6, and the tapered portion 7 formed on the outer periphery is engaged with the inner diameter of the check piece 8. One end of the compression panel is engaged with each of the spring receivers 11a to 1h engaged with the groove formed in the holder 6, compressing the tapered member 9 in the axial direction, and engaging with the tapered member 9. The chuck pieces 8 to be opened are expanded in the normal direction, and the inner diameters of the bobbins 13 a to _d are gripped.c The plurality of check pieces 8 are formed into a cylindrical sleeve 10 arranged coaxially with the holder 1. The chuck pieces 8 engage with the plurality of square holes, respectively, so that the chuck pieces 8 can be expanded in the normal direction. In the present embodiment, the sleeve 10 is shown integrally, but it may be divided into a plurality of pieces in the axial direction. The elongated hole 10a formed in the sleeve 10 is engaged with a pin 14 fixed to one end of the holder 6, so that the sleep 10 is prevented from rotating in the rotation direction and is movable in the axial direction. It is provided as follows. A piston 17 is coaxially engaged with the base of the supporter 1, and one end thereof is fixed in the axial direction by a retaining ring 23 fixed to the supporter 1. Further, a cylinder 16 is disposed so as to be axially movable coaxially with the biston 17, and O-rings 21 and 22 are disposed at an engagement portion between the cylinder 16 and the piston 17, and air is provided. Make up the cylinder. An annular plate 18 is fixed to the cylinder by a retaining ring 20. A compression spring 19 is provided coaxially with the sabot 1 between the piston 17 and the annular plate 18, and compressed air is supplied to the air supply port 16 a of the cylinder 16. If not, the cylinder 16 comes into close contact with the flange 1 a formed at the base of the supporter 1. Next, with reference to FIG. 2, a state in which the chuck member is released from the bobbin inner diameter, that is, a release state will be described. When compressed air is supplied from the air supply port 16a, the compression panel 19 is compressed, the cylinder 16 moves to the left side away from the flange 1a in Fig. 2, and the piston 17 moves from the retaining ring 23. To move to the right away, the end face 16 b of the cylinder 16 abuts the end 10 b of the sleeve 10 and presses the sleep 10 in the axial direction. As a result, the 9a portion of the tapered member 9 engaging with the groove 10c formed in the inner diameter of the sleep 10 is pressed in the axial direction (leftward in FIG. 2) to compress the compression coil spring 25, thereby chucking the chuck. The member 8 is free in the normal direction, and the inner diameter of the bobbin is loosened. At this time, the flange 17 a formed on the piston 17 comes into contact with the flange 6 a of the holder 6, and the holder 6 presses the sleeve 10 by the cylinder 16 in the axial direction with the biston 17. It receives the pulling force in the opposite direction to the force to be applied. That is, holder 6 is drawn by biston 17. Here, the relationship between the pressing force and the pulling force will be described in more detail with reference to FIG. When the compressed air is supplied, the cylinder 16 comes into contact with the sleep 10, and a pressing force of F 1 is applied to the sleep 10 from the cylinder 1. If the pulling means according to the present invention and 17 a or 6 a in the present embodiment are not provided, the pressing force F 1 is applied from the sleeve 10 to the tapered member 9 and from the tapered member 9 to the compressed coil spring 25. Then, the spring receiver 11, the holder 6, and the protrusion 3 of the rotating shaft are operated, and finally, the inner ring of the bearing 4 receives the force of F 1. As a result, a thrust force acts on the bearing, leading to premature damage and shortened service life. In this embodiment, the cylinder is constituted by the cylinder 16 and the piston 17, and the drawing means 17 a and 6 a are provided respectively, so that even if the pressing force F 1 acts on the holder 6. Since the pulling force F1 in the direction opposite to the pressing force F1 acts on the holder 6, the mutual forces cancel each other, and no thrust force acts on the bearing. When the compressed air is removed from the air supply port 16a of the cylinder 1, the cylinder 16 contacts the flange 1a and the piston 17 contacts the retaining ring 23 fixed to the supporter 1 by the compression spring 19. Open up. As a result, the sleep 10 is released and moved to the right by the compression spring 19, the tapered member 9 moves to the right, the chuck piece 8 expands in the normal direction, and the bobbins 13 a to d move. The inner diameter is gripped and the state shown in Fig. 1 is achieved, and the holder and bobbin can be rotated integrally. In the present embodiment, the chuck member is a taper member, but the present invention can be applied to a structure in which an elastic body is compressed and expanded, and other known chuck members. Further, in this embodiment, the drive source of the release means for pressing the holder at the time of release and the drive source of the pulling means opposed to the release means are compressed air, and the air cylinder is commonly and integrally formed. The drive source may use not only compressed air but also hydraulic pressure or other means.Furthermore, in this embodiment, the drive means for the release means and the drawing means are common, but different drive sources are used for each. Alternatively, they may be configured to operate in conjunction with each other. INDUSTRIAL APPLICABILITY The present invention is applicable to a bobbin holder in a winder for winding a yarn, and according to the present invention, when the bobbin is loosened, a pressing force acts on the holder 6 from the cylinder 16. At the same time, a pulling force is applied to the holder 6 from the piston 17 in a direction opposite to the pressing force, so that the thrust forces acting on the bearings 4 and 5 supporting the rotating shaft 2 are offset, so that the bearing Will not be damaged or the service life will not be shortened.

Claims

The scope of the claims

1. a holder rotatably supported by a bearing; an expandable chuck member for gripping a bobbin on the outer periphery of the holder; a compression means for expanding the chuck member to grip the bobbin; A bobbin holder having a pressing member for pressing the compression means when releasing and loosening the bobbin, and a release means disposed on the mounting portion side of the holder for pressing the pressing member; A bobbin having a pulling means for pressing the pressing member by the release means against the compression means when pulling the holder, and for pulling the holder in a direction opposite to the pressing direction of the release means. holder.

2. The bobbin holder according to claim 1, wherein the drive source of the pulling unit and the drive source of the release unit are a common drive source and are integrally formed.

3. The bobbin holder according to claim 1, wherein a drive source of the pulling means operates in conjunction with a drive source of the release means.