JP6320959B2 - Tilt actuator - Google Patents

Description

The present invention relates to a tilting operation equipment for operating the operation target.

  Conventionally, it is incorporated in a transported article sorting device that transports transported articles and sorts transported articles, and tilts a tray provided on a carriage that travels along the transport path, and transports the transported articles held in the tray to the transport path. 2. Description of the Related Art A tilting operation device that feeds a chute provided on a side is known (see, for example, Patent Document 1).

  The tilting operation device described in Patent Document 1 is configured to tilt a tray by rotating a swinging lever having a roller attached to the tip and pushing up a tray support that supports the tray by the roller. The swing lever is rotationally driven by a linear actuator having a rack gear that meshes with a spur gear provided at the other end of the swing lever.

JP 2009-18902 A

  In such tilting operation devices, downsizing is required due to the installation space, and as one proposal for realizing downsizing of the tilting operation device, it is conceivable to electrically drive the actuator that drives the swing lever. . In this case, a rotary solenoid may be used, but general rotary solenoids are often radial gap type, and such radial gap type rotary solenoids increase in the direction of the rotation axis. When tilting, it may be difficult to use a radial gap type rotary solenoid due to the installation space.

  In addition, it is conceivable to configure the above-mentioned linear motion actuator as an air-driven actuator. In this case, however, the apparatus configuration becomes large, such as requiring a compressor, and the apparatus cost and installation man-hour increase. There was a problem of requiring standby power when not in use.

Therefore, the present invention solves these problems and achieves downsizing of the structure of the apparatus with a simple configuration, and in addition, a tilting operation capable of realizing a reliable bearing of the rotating shaft member. it is an object to provide a equipment.

The tilting operation device of the present invention is a tilting operation device that tilts a tray provided on a carriage that travels along a transport path and sends a transported article held on the tray to the side of the transport path, and is fixed A base, a tray operating member provided to be rotatable with respect to the fixed base, a rotary solenoid that drives the tray operating member, and a rotating shaft member that functions as a rotating shaft of the tray operating member. The rotary solenoid is composed of a magnet rotor connected to the tray operating member via the rotating shaft member, and a stator having a coil supported by the fixed base. The magnet rotor and the stator are The rotating shaft member is arranged to face the rotating shaft direction, and the rotating shaft member extends from the magnet rotor toward the opposite side of the stator, and the stator Together with is connected to the tray actuating member on the opposite side, by being bearing by said stationary base in rotation axis direction both sides of the tray actuating member is intended to solve the above problems.
Contact name is a "positive current" in the present specification, does not mean the positive and negative current means that energizes the coil so as to rotate the magnet rotor in the first position, Further, “reverse energization” means energizing the coil so as to rotate the magnet rotor to the second position side.

According to the first aspect of the present invention, as the structure of the rotary solenoid that drives the tray actuating member, the structure in which the magnet rotor and the stator are arranged to face each other in the direction of the rotation axis is adopted, so that the rotation shaft of the rotary solenoid is used. In addition to reducing the directional dimension, the rotating shaft member functioning as the rotating shaft of the tray actuating member is extended from the magnet rotor toward the opposite side of the stator, thereby allowing the rotating shaft member to penetrate the stator. The rotary solenoid can be downsized in the radial direction, and even if the thickness of the magnet rotor and stator is reduced in the rotational axis direction, the magnet rotor and stator The large area facing the rotor and sufficient torque for the magnet rotor can be obtained. It can be miniaturized in rotation axis direction.
Further, since the bearing is received on both sides of the tray actuating member in the rotational axis direction, the load transmitted from the tray actuating member to the pivot shaft member is equally received on both sides of the tray actuating member in the rotational axis direction. In addition to improving the durability of the rotating shaft structure including the bearings, it is possible not only to ensure the correct operation of the tray operating member, but also to ensure a sufficient space between the bearing parts and between the bearing parts. Since this space can be effectively used as the installation space for the tray actuating member, the tilt actuating device in the direction of the pivot axis can be reduced in size while realizing a reliable bearing of the pivot shaft member.

  According to the second aspect of the present invention, when the rotary solenoid is positively energized with the coil, the torque that rotates the magnet rotor to the first position side where the tray is tilted by the tray operating member is generated by the magnetic force, and the reverse of the coil When energized, torque is generated by the magnetic force to rotate the magnet rotor to the second position side where the tray actuating member is retracted, and when the coil is not energized, the magnet rotor is positioned at the first position. Since the torque for rotating the magnet rotor is generated by the magnetic force, the operation member can be favorably moved to the first position and the second position by controlling the energization to the coil. In addition, when the coil is not energized, the operating member is moved to the second position side that does not tilt the tray. Since possible, even if a power failure occurs, it is possible to reliably prevent the erroneous sorting conveying article occurs. Further, in order to suppress the erroneous sorting at the time of the occurrence of the power failure as described above, the biasing of a spring or the like that applies torque for rotating the magnet rotor to the second position side with the magnet rotor positioned at the first position. Although it is conceivable to install a member, such an urging member imposes a load on the operation of the magnet rotor even during normal use, so that the responsiveness of the rotary solenoid and the operating member is delayed. On the other hand, in the invention according to claim 2, since the operating member is moved toward the second position by the magnetic force when the coil is not energized, the responsiveness of the rotary solenoid and the operating member during normal use is adversely affected. Can be avoided.

Explanatory drawing which shows the usage condition of the tilting operation apparatus which concerns on one Embodiment of this invention. Explanatory drawing which shows the usage condition of the tilting operation apparatus seeing from the direction different from FIG. The perspective view which shows a tilting operation apparatus. FIG. 4 is a perspective view showing a tilting operation device as seen from a direction different from that in FIG. 3. Sectional drawing which shows a tilting actuator.

  Below, tilting operation device 10 which is one embodiment of the present invention is explained based on a drawing.

  First, the tilting operation device 10 is incorporated in a transported article sorting device that transports the transported article W and sorts the transported article W, and as shown in FIG. 1, a cart C that travels along the transport path A. The tray T as the operation target provided so as to be tiltable is tilted, and the transported article W held on the tray T is sent to a chute (not shown) provided on the side of the transport path A.

  In the present embodiment, as shown in FIG. 2, the tray T is supported by the support base O so that the tray T can be tilted to the left and right sides in the extending direction of the transport path A, and the tilt operating device 10 is supported. It is provided on each of the left and right sides of the table O. As in the example shown in FIG. 2, when the tray T is tilted also to each tilt actuating device 10 side, downsizing of the tilt actuating device 10 is required due to the installation space.

  As shown in FIGS. 3 to 5, the tilting operation device 10 includes a fixed base 20 installed in a fixed state, a tray operating member 30 provided to be rotatable with respect to the fixed base 20, and a tray operating member 30. A rotary solenoid 40 that drives the tray operating member 30, a rotating shaft member 50 that functions as a rotating shaft of the tray operating member 30, and a rotation restricting portion 60 that limits the rotating region of the tray operating member 30.

  As shown in FIGS. 3 to 5, the fixed base 20 includes a case 21 that houses the rotary solenoid 40 and the like, and a plate-like bearing support member 22 and a front end side bearing support member 23 that are attached to the case 21. Yes.

As shown in FIG. 5, the case 21 has a front side opening and a back side opening on the front side facing the tray actuating member 30 side and the back side opposite to the front side. An attachment portion 21a for attaching the tilting actuator 10 to the support base O as an attachment target is formed in the lower part of the case 21.
The bearing support member 22 is attached to the opening on the front side of the case 21 and also functions as a front cover of the case 21. A first bearing 22 a that supports the tray operating member 30 is attached to the bearing support member 22 at one side in the rotational axis direction of the tray operating member 30 facing the rotary solenoid 40 side.
The front end side bearing support member 23 is formed in an L shape, and a front end side portion thereof is disposed on the other side in the rotational axis direction of the tray operating member 30 on the side opposite to the rotary solenoid 40 side. A second bearing 23 a that supports the tray operating member 30 is attached to the distal end side bearing support member 23 on the other side in the rotational axis direction of the tray operating member 30.

  In the above description, the bearings 22a and 23a formed separately are attached to the bearing support member 22 and the front end side bearing support member 23. However, a hole is formed in the bearing support member 22 and the front end side bearing support member 23. And the tray actuating member 30 may be directly supported by these holes.

  As shown in FIGS. 1 to 5, the tray operating member 30 includes an arm 31 fixed to the rotating shaft member 50 and a roller 32 that is rotatably attached to the tip of the arm 31 and pushes up the tray support S. It consists of and.

  As shown in FIG. 5, the rotary solenoid 40 includes a magnet rotor 41 disposed so as to be rotatable with respect to the fixed base 20, and a stator 43 supported in a fixed state by the fixed base 20. The magnet rotor 41 and the stator 43 are opposed to each other in the rotation axis direction (that is, the extending direction of the rotation axis member 50).

As shown in FIG. 5, the magnet rotor 41 is composed of a pair of permanent magnets 42 and has an octagonal overall shape when viewed in the rotational axis direction.
One permanent magnet 42 constituting the magnet rotor 41 is arranged with the north pole facing the stator 43 side, and the other permanent magnet 42 is placed with the south pole facing the stator 43 side.
As shown in FIG. 5, the magnet rotor 41 is fixed to the tip of the rotating shaft member 50.

  As shown in FIG. 5, the stator 43 includes a yoke 45 attached to the case 21, left and right core members (not shown) attached so as to protrude from the yoke 45 in the rotation axis direction, and each of the core members. The coil 44 is wound around. The coil 44, the core member, and the yoke 45 are made of a magnetic material such as iron. Further, the yoke 45 is attached to the back side opening of the case 21 and also functions as a back cover of the case 21.

  The rotating shaft member 50 functions as an output shaft of the magnet rotor 41 and a rotating shaft of the tray actuating member 30, and one end is fixed to the magnet rotor 41 as shown in FIG. 43 extends only on the side opposite to the side 43 and is connected to the tray actuating member 30 on the side opposite to the stator 43. Thereby, the design freedom degree of a stator structure can be ensured and the performance improvement and size reduction of the tilting actuator 10 can be achieved favorably. The rotation shaft member 50 is supported by the fixed base 20 on both sides of the tray operation member 30 in the rotation axis direction. Specifically, the rotation shaft member 50 is supported by the first bearing 22a and the second bearing 23a.

  As shown in FIGS. 3 and 4, the rotation restricting unit 60 includes a first position where the tray T is tilted by the tray operating member 30 and a second position where the tray T is not tilted by the tray operating member 30. The rotation area of the tray actuating member 30 is limited to the area between the first stopper 61 disposed on the first position side and the second stopper disposed on the second position side. 62.

  Next, the operation of the tilting operation device 10 of the present embodiment will be described below.

  First, when the coil 44 is positively energized, the rotary solenoid 40 generates a torque for rotating the magnet rotor 41 toward the first position by a magnetic force, thereby causing the tray operating member 30 connected to the magnet rotor 41 to move to the first position. The tray T is tilted by the tray operating member 30.

  On the other hand, when the coil 44 is reversely energized, the rotary solenoid 40 generates a torque for rotating the magnet rotor 41 on the second position side by the magnetic force, whereby the tray T is not tilted. The tray actuating member 30 is moved.

Further, in the rotary solenoid 40 of the present embodiment, a neutral position that does not generate torque due to the magnetic force that rotates the magnet rotor 41 when the coil 44 is de-energized is formed in the rotation region of the tray actuating member 30. Thereby, when the coil 44 is not energized, the magnet rotor 41 moves to the neutral position.
And in the rotation area of the tray operating member 30, the tilting area near the first position where the tray T is tilted by the tray operating member 30 and the retreating area near the second position where the tray T is not tilted by the tray operating member 30. Since the neutral position is located in the retreat area, the tray actuating member 30 that has moved to the neutral position does not tilt the tray T.

Further, in the present embodiment, the non-facing portion that does not face the magnet rotor 41 in the rotation axis direction on the rotor facing surface of the core member facing the magnet rotor 41 with the magnet rotor 41 positioned at the first position. Is formed.
By forming this non-opposing portion, when the magnet rotor 41 is located at the first position and the coil 44 is de-energized, the torque that rotates the magnet rotor 41 toward the second position is generated by the magnetic force. Thus, when the coil 44 is not energized, the tray operating member 30 can be moved to the neutral position, and the torque acting on the magnet rotor 41 can be increased.

  In the present embodiment, one side of each permanent magnet 42 constituting the magnet rotor 41 is inclined obliquely to adjust the overall shape when viewed in the rotation axis direction of the magnet rotor 41, and the above-described non-facing However, the method of forming the non-opposing portion is not limited to the above. For example, the height (distance from the rotation axis) of one side of each permanent magnet 42 is reduced, or arranged in the horizontal direction. Any arrangement may be employed such as shifting the arrangement of the rotor facing surfaces of the left and right core members in the vertical direction.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited to the said embodiment, A various design change can be performed without deviating from this invention described in the claim. Is possible.

For example, in the above-described embodiment, the magnet rotor is composed of two permanent magnets, but the number, shape, arrangement, and the like of the permanent magnets are not limited to the above.
Further, the specific configuration of the stator may be any as long as the magnet rotor is favorably rotated by a magnetic force.
In the above-described embodiment, the tray operating member has been described as tilting the tray by pushing up the tray via the tray support in the first position. However, the specific mode of the tray operating member is the first position. Anything can be used as long as it moves the tray to tilt the tray .

10 ... Tilt actuator (actuator)
20 ... fixed base 21 ... case 21a ... mounting part 22 ... bearing support member 22a ... first bearing 23 ... tip side bearing support member 23a ... second bearing 30 ...・ Tray operating member (actuating member)
31 ・ ・ ・ Arm 32 ・ ・ ・ Roller 40 ・ ・ ・ Rotary solenoid 41 ・ ・ ・ Magnet rotor 42 ・ ・ ・ Permanent magnet 43 ・ ・ ・ Stator 44 ・ ・ ・ Coil 50 ・ ・ ・ Rotary shaft member 60 ・ ・ ・Rotation restricting part 61 ... 1st stopper 62 ... 2nd stopper A ... Carriage path C ... Carriage T ... Tray (operation object)
S ... Tray support W ... Transported article O ... Support base

Claims (2)

A tilt actuating device that tilts a tray provided on a carriage that travels along a transport path, and sends a transport article held on the tray to a side of the transport path;
A fixed base, a tray actuating member provided to be rotatable with respect to the fixed base, a rotary solenoid that drives the tray actuating member, and a pivot shaft member that functions as a pivot shaft of the tray actuating member. Prepared,
The rotary solenoid is composed of a magnet rotor connected to the tray operating member via the rotating shaft member, and a stator having a coil supported by the fixed base,
The magnet rotor and the stator are disposed to face each other in the rotation axis direction,
The rotating shaft member extends from the magnet rotor toward the opposite side of the stator, and is connected to the tray operating member on the opposite side of the stator, and on both sides of the tray operating member in the rotating axis direction. The tilting operation device is characterized in that it is supported by the fixed base. A rotation restricting portion for restricting a rotation area of the tray operating member to an area between the first position and the second position;
The rotary solenoid generates, by magnetic force, a torque that rotates the magnet rotor to a first position that tilts the tray by the tray operating member when the coil is positively energized, and when the coil is reversely energized, Torque for rotating the magnet rotor is generated by magnetic force on the second position side where the operating member is retracted, and the second position is in a state where the magnet rotor is positioned at the first position when the coil is not energized. 2. The tilting operation device according to claim 1, wherein torque for rotating the magnet rotor is generated by a magnetic force .

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