JP2008170011A - Rotary shaft with magnetic cylinder, rotation transmission mechanism, and conveying device using it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a fixing structure of a magnetic cylinder and a rotary shaft, and to expand its application range. <P>SOLUTION: This invention accomplishes the above purpose by the rotatry shaft with the magnetic cylinder, in which an O ring is fitted and fixed on the rotary shaft, the magnetic cylinder whose peripheral wall is alternately provided with N-S permanent magnet threads is fitted outside the O ring, and the rotary shaft and the magnetic cylinder are fixed by the elastic force of the O ring. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  It is an object of the present invention to simplify and easily fix a magnetized cylinder of a non-contact rotation transmission mechanism, to reduce the installation area of the transfer device using the non-contact rotation transmission mechanism, and to improve the ease of management. The present invention relates to a rotating shaft with a magnetized cylinder, a transport device using the rotating shaft, and a non-contact rotation transmission mechanism.

  Conventionally, it is known that the magnetized cylinder and the rotary shaft of the non-contact rotation transmission mechanism are key-fixed, screw-fixed, and the like.

Japanese Patent No. 3353107

  The conventional fixing method has a problem that a fixing device is required, and labor and time are required to improve dimensional accuracy.

  In addition, in order to reduce the runout of the magnetized tube, the dimension between the outer diameter of the rotating shaft and the inner diameter of the magnetized tube requires a relatively high accuracy, and depending on the place of use, the work may be difficult. There was a problem that required more time and labor for mounting, removing, or position regulation.

  The present invention solves the above-mentioned conventional problems by fixing an O-ring to a rotating shaft and fitting and fixing a magnetized tube to the position of the O-ring.

  That is, the present invention is a magnetic attachment in which an O-ring is fitted and fixed to a rotating shaft, and N and S permanent magnet strips (N pole and S pole permanent magnet strips) are alternately provided on the outer wall of the O ring. A rotating shaft with a magnetized tube, in which a tube is fitted and the rotating shaft and the magnetized tube are fixed by the elasticity of an O-ring, and an annular groove is provided outside the rotating shaft, An O-ring is fitted and fixed in the annular groove, and a magnetized cylinder having N and S permanent magnets alternately provided on the peripheral wall is fitted outside the O-ring, and the O-ring is fitted on the inner wall of the magnetized cylinder. Is a rotating shaft with a magnetized tube, wherein the shaft is pressed against. As a result, the contact pressure is uniformly applied to the outer peripheral portion of the O-ring, so that the center runout is reduced.

  According to another aspect of the present invention, in the conveyor having the rotating shaft with a magnetized cylinder as a drive shaft and a driven shaft, the magnetized cylinder is provided with N and S permanent magnets alternately in a spiral shape, and the drive A plurality of magnetized cylinders are fixed to the shaft, and the center of the magnetized cylinder of the driven shaft is arranged at right angles to the magnetized cylinder, and the rotating shaft with the magnetized cylinder is In the conveyor having a drive shaft and a driven shaft, the magnetized cylinder is provided with N and S permanent magnets alternately in a spiral shape, and a plurality of magnetized cylinders are fixed to the drive shaft, The center of the magnetized cylinder of the driven shaft is arranged at right angles to the cylinder, the magnetizing directions of the adjacent magnetized cylinders of the driven shaft are respectively opposite directions, and a conveyor is configured using the same driven shaft in the rotational direction. It is the conveying apparatus characterized by having performed.

  Next, in the invention of the rotation transmission mechanism, the rotating shaft according to claim 1 or 2 is installed on the concentric circumference of the turntable so as to be rotatable at a right angle. A non-contact rotation transmission mechanism, characterized in that a magnetized cylinder fixed to a drive shaft faces a position where the magnetized cylinder is fixed to the magnetized cylinder and can be transmitted in a non-contact manner. Is characterized in that the motor is rotated and transmitted through a belt or a gear.

  The O-ring according to the present invention is made of rubber or synthetic resin, and is brought into surface contact with the inner wall of the magnetized cylinder by pressurizing and deforming, so that the frictional force of the contact surface is larger than the transmission force performed through the magnetized cylinder. In addition, since the deviation should not occur, it is desirable that the total frictional force is, for example, twice or more the maximum transmission force.

  In order to achieve the object, one or a plurality of O-rings are used for one magnetized cylinder.

  The position of the O-ring is in the vicinity of the central portion of the magnetized tube, but there is no special restriction.

  In the present invention, when an annular groove is provided on the rotary shaft and an O-ring is fitted in the annular groove, the width and depth of the annular groove are determined in consideration of the deformation cross section of the O-ring.

  In the non-contact power transmission mechanism according to the present invention, since it is magnetic coupling, there is no possibility that the parts of the transmission mechanism are broken even if the rotating shaft does not move for some reason.

  In the present invention, the fixing of the magnetized cylinder and the rotating shaft is due to the frictional force between the O-ring and the magnetized cylinder. Therefore, even if the position of the O-ring is slightly deviated, the transmission efficiency is not adversely affected. The deviation of the position of the magnetized tube can be easily finely adjusted.

  According to the present invention, a magnetized tube that is loosely fitted (rotatably fitted) to a rotating shaft is fixed by an O-ring that is fitted and fixed to the rotating shaft. In this case, since the O-ring is made of rubber or synthetic resin, it can be handled as independent of magnetic force.

  The fixing of the rotating shaft and the magnetized cylinder in the above is based on the frictional force of the O-ring. Therefore, a material that has a large frictional coefficient and can set an elastic force when being deformed under pressure and has a large frictional force is desirable. At the same time, since it is necessary to easily fit the magnetized tube, the material must be easily deformed under pressure and uniformly deformed (the deformation cross section is the same).

  In the magnetized cylinder of the present invention, for example, a permanent magnet such as a neodymium (Nd-Fe-B) magnet is formed in a short cylinder shape, and N pole stripes and S pole stripes are alternately provided in close contact with the outer peripheral surface thereof. In this case, the N pole and the S pole are not related to fixing of the rotating shaft and the magnetized cylinder, regardless of whether they are linear or spiral, but spiral for transmitting non-contact power. Is more preferable.

  According to the present invention, the power of the conveyor is arranged if a rotating shaft with a large number of magnetized cylinders is used as a drive shaft, and one magnetized cylinder of a driven shaft is arranged at a right angle for each of the magnetized cylinders. can do.

  According to the present invention, a plurality of magnetized cylinders are fixed to the drive shaft at predetermined intervals, and a magnetized cylinder is fixed to one end of each of the plurality of driven shafts. Keep a distance and place them at right angles.

  Also, every other magnetized cylinder of the driven shaft has the magnetization direction opposite. Further, the driven shafts to which the magnetized cylinders magnetized in the same direction are fixedly fitted with rollers in the same positional relationship.

  Next, the driven shaft is rotatably attached at equal intervals to the same circumferential position of the turntable, the support base is fixed to the upper end of the driven shaft, the magnetized tube is fixed to the lower end portion, and one magnetic attachment of the lower end portion is fixed. Close to the cylinder, the magnetized cylinder of the drive shaft is arranged in parallel or at a right angle, and the drive shaft is connected to the prime mover.

  An embodiment of the present invention will be described with reference to FIGS. An annular groove 2 is provided on the rotating shaft 1, an O-ring 3 is fitted into the annular groove 2, and a magnetized cylinder 4 is fitted onto the rotating shaft 1 so that the O-ring 3 is at the center. The rotating shaft 5 with magnetized cylinder of the invention was obtained.

  The magnetized cylinder 4 has N pole and S pole magnetized strips 7 and 7a provided alternately on the outer wall of the cylinder 6 at an angle of 45 degrees. The number of the magnetic strips 7 and 7a is not limited, but is usually provided in the form of several multi-strand spirals.

  In FIG. 2, (a) is 45 degrees left, and (c) is 45 degrees right.

  With respect to the outer diameter of the rotating shaft 1, the inner diameter of the magnetically-adhered cylinder 4 is set to such a dimension that it can be smoothly fitted. Further, the width and depth of the annular groove 2 provided on the rotating shaft 1 are determined in consideration of the cross-sectional area of the O-ring 3 fitted into the annular groove 2, and when the magnetized cylinder 4 is fitted on the rotating shaft 1, the O-ring 3. It is set as the extent which can accommodate the deformation | transformation cross section of.

  If the total frictional force of the rotating shaft 1, the magnetized cylinder 4 and the O-ring 3 is set to be twice or more the rotational torque transmitted to the magnetized cylinder 4, it can be used safely.

  In the above embodiment, one O-ring 3 is used for one magnetized cylinder 4, but a plurality of O-rings 3 may be interposed (FIG. 1- (c)).

  For example, if the O-ring 3 is interposed at a position that is 1/3 of the axial length of the magnetized cylinder 4, the magnetized cylinder 4 can be stably fixed.

  Although the material of the O-ring is not specified, it is desirable that the elastic limit is large and that the same elasticity be maintained when used for a long time and that it does not age during use.

  The fixing of the rotating shaft and the magnetized cylinder in this invention is not restricted to the magnetized state (straight or spiral).

  An embodiment of the present invention will be described with reference to FIGS. A plurality of magnetized cylinders 4 and 4 are fixed to the outside of the drive shaft 8 at equal intervals.

  One magnetized cylinder 4a is fixed to each of the driven shafts 9 installed at right angles to the drive shaft 8, and the magnetized cylinders 4a of the driven shaft 9 are overlapped with the magnetized cylinders 4 and 4 at right angles. At the same time, a roller 11 is fixed to the driven shaft 9 to constitute a non-contact conductive conveyor 10.

  In the above embodiment, when the drive shaft 8 is interlocked with a prime mover (for example, a motor) and rotated in the direction of the arrow 12, for example, each driven shaft 9 is in the direction of the arrow 13 via the magnetized cylinders 4 and 4a. The object (for example, the tray 14) placed on the non-contact conveyor 10 is moved in the direction of the arrow 15.

  Another embodiment of the present invention will be described with reference to FIG. In the embodiment of FIG. 4, the magnetized cylinders 4a and 4 are alternately fixed to the drive shaft 8 of the embodiment of FIG. The magnetized cylinders 4c and 4b having different directions and left directions are fixed, and the roller 11a of the driven shaft 9a is fixed in a different row from the roller 11 of the driven shaft 9.

  In the above embodiment, when the drive shaft 8 is rotated in the direction of arrow 12, the driven shaft 9 is rotated in the direction of arrow 13, and the driven shaft 9a is rotated in the direction of arrow 16. Therefore, the forward direction 15 of the conveyor by the driven shaft 9 is opposite to the forward direction 17 of the conveyor by the driven shaft 9a. Therefore, since the parallel conveyor can be moved in the reverse direction, when it is used for returning the tray, useful work can be performed in a narrow place. In the above description, the number of drive shafts is one, but another drive shaft can be installed on the symmetrical side to improve the performance by a similar conduction system.

  Another embodiment of the present invention will be described with reference to FIG. A plurality of rotary shafts 18, 18 are installed on concentric circles of the turntable 27 so as to be rotatable at right angles at equal intervals, a support plate 19 is fixed to the upper end of the rotary shaft 18, and a magnet is applied to the lower end of the rotary shaft 18. The sleeves 20 are fixed respectively. A magnetized cylinder below the turntable 27, close to the trajectory of the magnetized cylinder 20, is a stop position of the magnetized cylinder 20, and rotates with a slight gap from the outer wall of the magnetized cylinder 20. A non-contact rotation transmission mechanism 25 is configured by installing 21 rotation shafts 22, fixing a timing roller 23 to the rotation shaft 22, and attaching a timing belt 24 to the timing roller 23. In the figure, reference numeral 30 denotes a drive shaft of the turntable 27.

  According to the embodiment, the turntable 27 includes the support plate 19 fixed to the upper end of the rotary shaft 18, for example, each magnetized cylinder 20 is intermittently rotated so as to stop in the vicinity of the magnetized cylinder 21. If the workpiece 26 is installed, the workpiece 26 is processed by a tool or the like while rotating as the rotary shaft 18 rotates. That is, it is intermittently rotated.

  In the above embodiment, one turntable 27 is processed at one place, but it is needless to say that it may be processed at a plurality of places.

  Therefore, if the non-contact rotation transmission mechanism 25 is used, the workpiece 26 is intermittently carried, processed at the stop position, and sent to the next process.

  In the embodiment shown in FIG. 5A, the parallel rotating shaft 22 is used to rotate the rotating shaft 18 and a magnetized tube of parallel magnet strips is used. However, as shown in FIG. When the rotation axis 29 of the magnetized cylinder 28 is arranged at a right angle with respect to the 18 magnetized cylinders 20, a spiral magnetized magnetized cylinder is used.

  According to the present invention, by fixing the rotating shaft and the magnetized cylinder via the O-ring, the center runout can be reduced, and there is an effect that the fixing or removing, the position setting, and the like are simplified and ensured.

  Moreover, by doing in this way, there are various effects such as improving the degree of freedom of assembly of the conductive system and reducing the installation area of the transport system.

(A) The front view which carried out the cross section of a part of Example of the rotating shaft of this invention, and abbreviate | omitted one part. (B) Similarly AA sectional drawing in figure (a). (C) Sectional drawing which abbreviate | omitted a part of other Example similarly. (A) The side view of a magnetized cylinder similarly. (B) Similarly front view. (C) Side view of another magnetized tube. (D) Similarly front view. (E) Side view of a linear magnetized cylinder. (F) Similarly front view. The perspective view of the Example of a conveyor similarly. The perspective view of the Example of a double row conveyor similarly. (A) The perspective view of the Example of the conduction mechanism by a turntable similarly. (B) The perspective view of another Example similarly.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Annular groove 3 O-ring 4 Magnetized cylinder 5 Rotating shaft 6 with magnetized cylinder Cylinder 7, 7a Magnetized strip 8 Drive shaft 9 Drive shaft 10 Non-contact conductive conveyor 11 Roller 14 Plates 20, 21 Magnetized cylinder 23 Timing roller 24 Timing belt 25 Non-contact transmission mechanism 27 Turntable

Claims (13)

A rotating shaft with a magnetized tube,
Axis of rotation,
An O-ring mounted on the outer periphery of the rotating shaft, and a magnetized cylinder having N-pole and S-pole permanent magnet strips mounted in contact with the outer periphery of the O-ring and alternately provided on the outer wall;
A rotating shaft with a magnetized cylinder in which the rotational torque generated in the rotating shaft is transmitted to the magnetized cylinder by the O-ring, or the rotating torque generated in the magnetized cylinder is transmitted to the rotating shaft by the O-ring. . A rotating shaft with a magnetized cylinder that transmits rotation to a driven magnetized cylinder having alternating N-pole and S-pole permanent magnet strips,
Driving rotary shaft,
An O-ring mounted on the outer periphery of the drive rotating shaft, and a drive magnetized cylinder mounted in contact with the outer periphery of the O-ring, having N-pole and S-pole permanent magnet strips provided alternately on the outer peripheral wall And a drive magnetized cylinder that is magnetically coupled to the driven magnetized cylinder,
A rotating shaft with a magnetized cylinder in which rotational torque generated on the driving rotating shaft is transmitted to the driven magnetized cylinder by the O-ring, and the driven magnetized cylinder is rotated by rotation of the driven magnetized cylinder. A rotation axis with a magnetized cylinder to which rotation is transmitted from a drive magnetized cylinder having alternating N pole and S pole permanent magnets,
Driven rotary shaft,
An O-ring attached to the outer periphery of the driven rotary shaft, and a driven magnetically attached cylinder attached in contact with the outer periphery of the O-ring, wherein N pole and S pole permanent magnet strips are alternately provided on the outer peripheral wall. Comprising a driven magnetized cylinder that is magnetically coupled to the drive magnetized cylinder,
A rotating shaft with a magnetized cylinder in which the driven magnetized cylinder is rotated by rotation of the driven magnetized cylinder, and a rotational torque generated in the driven magnetized cylinder is transmitted to the driven rotating shaft by the O-ring.   4. The rotating shaft with magnetized cylinder according to claim 2 or 3, wherein the driving magnetized tube is arranged in a non-contact manner with respect to the driven magnetized tube.   4. The rotating shaft with a magnetized cylinder according to claim 1, wherein the rotating shaft, the driving rotating shaft, or the driven rotating shaft has an annular groove, and the O-ring is fitted in the annular groove. Rotating shaft with magnetized cylinder.   The rotating shaft with a magnetized cylinder according to any one of claims 1 to 3, wherein a plurality of O-rings are mounted on an outer periphery of the rotating shaft, the driving rotating shaft, or the driven rotating shaft. A rotating shaft with a magnetically attached tube, which is in contact with the outer periphery and on which the magnetically attached tube is mounted. A rotation transmission mechanism,
Driving rotary shaft,
A first O-ring mounted on the outer periphery of the drive rotary shaft;
A first magnetically attached cylinder mounted in contact with the outer periphery of the first O-ring and having N pole and S pole permanent magnets alternately provided on the outer peripheral wall;
A driven rotary shaft, and a second magnetically attached cylinder attached to the driven rotary shaft, the second magnetically attached cylinder having N pole and S pole permanent magnets alternately provided on the outer peripheral wall;
Rotational torque generated on the drive rotating shaft is transmitted to the first magnetized cylinder by the first O-ring, and the second magnetized cylinder magnetically coupled to the first magnetized cylinder A rotation transmission mechanism configured to rotate in accordance with the rotation of one magnetized tube. The rotation transmission mechanism according to claim 7,
A second O-ring mounted on the outer periphery of the driven rotary shaft;
The second magnetized cylinder is mounted in contact with the outer periphery of the second O-ring;
A rotation transmission mechanism configured to transmit a rotational torque generated in the second magnetized cylinder to the driven rotation shaft by the second O-ring.   9. The rotation transmission mechanism according to claim 7, wherein the first and second magnetically-adhered cylinders are provided with N-pole and S-pole permanent magnet strips alternately provided in a spiral shape, A rotation transmission mechanism in which the second magnetized cylinders are arranged at right angles to each other.   The rotation transmission mechanism according to claim 7 or 8, wherein the first and second magnetically-adhered cylinders are provided with N-pole and S-pole permanent magnet strips that are alternately provided perpendicularly to the bottom surface. A rotation transmission mechanism in which a landing tube and the second magnetized tube are arranged in parallel to each other.   The rotation transmission mechanism according to claim 7 or 8, wherein the first magnetized cylinder and the second magnetized cylinder are arranged in a non-contact manner.   The rotation transmission mechanism according to claim 7 or 8, wherein the drive rotation shaft or the driven rotation shaft has an annular groove, and the first or second O-ring is fitted in the annular groove.   13. A transport device comprising the rotation transmission mechanism according to claim 7, wherein a plurality of the first magnetized cylinders are mounted on the drive rotating shaft, and the plurality of first magnetized magnets are mounted. A transport apparatus in which a plurality of the driven rotation shafts corresponding to the cylinder are arranged in parallel.

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