JP2584888Y2 - Carrier tray type transfer device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier tray type transport device for transporting articles on a carrier tray, and more particularly to a carrier tray type transport device having an improved carrier tray horizontal holding mechanism.

[0002]

2. Description of the Related Art Conventionally, there are various apparatuses for transporting articles, and an appropriate transport apparatus is selected according to conditions such as the type of article and the transport form. One of the transfer devices is a carrier tray type transfer device. This carrier tray type transfer device has a structure in which, for example, a plurality of carrier trays for placing and transferring articles are connected, and by moving the connected carrier trays along a predetermined traveling path, it is possible to continuously transfer the articles. It is a transport device. In this carrier tray type transfer device, by adopting a horizontal holding mechanism that always keeps the carrier tray horizontal, articles are prevented from slipping off the carrier tray and the like, so that the articles can be moved up or down in the conveyance path. A gradient can be provided,
As a result, there is an advantage that the degree of freedom of the transport path is increased and various transport modes can be supported.

[0003] Many of the conventional carrier tray-type transfer apparatuses have been proposed, for example, as shown in Japanese Patent Application Laid-Open No. 55-2591. The configuration shown here is such that the carrier tray is supported by a connecting frame, rollers are provided below the supporting frame, and the connecting frame is connected by a chain and routed along the transport path. It is. A support rod for supporting the tray is provided upright at the center of the connection frame. An intersection between the support rod and the connection frame is rotatably supported, and a pinion is provided on the shaft. I have.

On the other hand, a rack gear corresponding to the gradient is provided at a position below the guide rail for guiding the rollers of the connecting frame at a position where the conveying path has an ascending or descending gradient, and is conveyed by the chain. When the connected frame enters a rising gradient, the pinion meshes with the rack gear, rotates the pinion appropriately, changes the angle between the support rod and the connection frame, and holds the tray on the support rod in the horizontal direction. Was composed.

[0005]

However, in the carrier tray horizontal holding mechanism having the above-mentioned structure, the adjustment of the meshing between the pinion on the connecting frame side and the rack gear corresponding to the gradient becomes complicated, and particularly, the engagement between the rack gear and the pinion becomes complicated. The resistance at the start of the engagement is large, the load on the drive system fluctuates, and as the transport speed increases, the resistance at the start of the engagement between the rack gear and the pinion gear becomes an impact, and this impact may cause gear damage, etc. There is a problem that the horizontal holding mechanism is complicated as well as easy. The present invention
In view of the above circumstances, the object is to provide a carrier tray horizontal holding mechanism that can reduce complicated parts such as adjusting the engagement between the rack gear and the pinion gear while reducing the number of parts with a simple structure. And a carrier tray-type transfer device.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a support tray for supporting a carrier tray provided below a carrier tray on which articles are to be placed, the lower end of the support rod being fixedly supported to advance the tray. A traveling roller provided on a link frame extending in a direction is guided along a transport path, and the link frames are connected to each other via a support shaft so as to be vertically rotatable, and the carrier tray A first tray roller and a second tray roller are rotatably provided at predetermined intervals on both sides of the carrier tray in the traveling direction so as to horizontally support the carrier tray, and along a rising gradient or a descending gradient of the transport path. A guide rail for a first tray roller and a guide rail for a second tray roller which respectively engage with and guide the first tray roller and the second tray roller. Is and, further, one of the Li
A suction part provided on one end side of the link frame;
Placed on other link frames linked by
A magnet that can be magnetically attached to and released from the suction portion.
And a magnet device having a net.
The carrier tray type transfer device is characterized in that the link frames are fixed in a horizontal state by a magnetic force, and the link frames are released from each other when traveling on a slope. In addition, the magnet device is configured to perform the suction according to a rotation direction.
Permanent magnet that no longer generates magnetic force on the part
And the permanent magnet is rotatable on the link frame.
A cam plate for rotating the magnet is provided on the rotating shaft to be held.
The projection may be provided on the gantry so as to contact the cam plate and rotate the cam plate.

[0007]

When the horizontal holding mechanism moves in the horizontal direction of the conveying path, the magnet unit is operated and the adjacent link frames are linearly connected in the horizontal direction. Therefore, the carrier tray on the support rod, which stands vertically from the link frame, is moved while being held in the horizontal direction. Next, when reaching the rising gradient position of the transport path, the magnet device is cut off at the rising position to open the adjacent link frame, and the first tray roller provided on the carrier tray is moved to the first tray roller guide rail. At the same time as the engagement, the second tray roller is engaged with the guide rail for the second tray roller, and is pulled by the transport of the chain, so that the traveling roller starts to climb the ascending slope. Along with this, the adjacent link frame that has been freed by the opening of the magnet device is bent by the support shaft and rises while supporting the support rod in the vertical direction. Then, the carrier tray moves while maintaining the horizontal state. If the ascent ends and moves horizontally,
The first tray roller and the second tray roller are disengaged from the engaged first and second tray roller guide rails, respectively, and the magnet device is operated to be adjacent to the first and second tray roller guide rails. Link frames are linearly connected in the horizontal direction, and the carrier tray is moved while maintaining the horizontal direction.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS. In FIG. 1, a carrier tray-type transfer device 1 includes a guide rail 3 formed of a C-shaped channel provided parallel to each other and facing the outside of a gantry 2 provided along a transfer path, and a C-shaped channel. A plurality of traveling rollers 4 rotatably provided inside the guide rail 3, a support shaft 5 for supporting the traveling roller 4, and a plurality of rotatably provided via the support shaft 5. A link frame 6 for a chain, a support shaft 7 at the other end of the link frame 6 for rotatably locking the adjacent link frame 6, a magnet device 8 provided around the support shaft 7, A mounting base 9 provided between the support shaft 5 of the traveling roller 4 and the support shaft 7 of the magnet device 8 and fixed between link frames 6 provided at both ends; Support rods 10 vertically set up The carrier tray 11 fixed horizontally on the support rod 10
And a drive unit (not shown).

The traveling direction of the carrier tray 11 (FIG. 1)
, A first tray roller 12 and a second tray roller 13 extending downward on both sides of the arrow F).
Each pair is provided on the left and right sides at a predetermined interval. First
The second tray roller 13 is provided closer to the carrier tray 11 than the first tray roller 12, and the first tray roller 12 and the second tray roller 12 are provided vertically below the carrier tray 11. The height with respect to the tray roller 13 is provided stepwise. On the other hand, on a guide rail 3 arranged along the transport path, a column 14 erected from the gantry 2 is provided above the position where the ascending gradient is entered, and the column 14 has a first tray. A first tray roller guide rail 15 and a second tray roller guide rail 16 for respectively guiding the roller 12 and the second tray roller 13 are provided. These first and second tray roller guide rails 15 and 16 hold the carrier tray 11 in the horizontal direction and are pushed up by the support rod 10 and the link frame 6 so that the first tray roller 12 and the second The first tray roller 12 and the guide rail 15 for the first tray roller, the second tray roller 13 and the guide rail 16 for the second tray roller, The magnet device 8 provided on the support shaft 7 forms a carrier tray horizontal holding mechanism 17.

Hereinafter, the carrier tray horizontal holding mechanism 17 will be described.
Will be described with reference to FIG. It is assumed that the carrier tray type transfer device 1 shown in the drawing is moving rightward (in the direction of arrow F) from the left side of the drawing. In this case, the carrier tray 11 _I at the position of the leftmost I figure the support lever 10
And the magnet device 8 keeps the horizontal state. At this time, the adjacent carrier tray 11 _II at the position II is at a position where the running roller 4 enters a rising gradient, the magnet device 8 is opened, and the link frame 6 is released from linear fixing. At the same time, the carrier tray 11
The first tray roller 12 of _II is engaged with the first tray roller guide rail 15, the second tray roller 13 is engaged with the second tray roller guide rails 16, below, the carrier tray 11 _II Are a first tray roller guide rail 15 and a second tray roller guide rail 16
, And is pulled by the traveling roller 4 and starts to rise on an ascending gradient. In the carrier tray 11 _{II which} has begun to climb the rising gradient, the side of the link frame 6 provided with the support rod 10 is pulled up at the position shown in FIG. III, and the adjacent link frame 6 connected to the rear thereof is bent upward. The link frame 6 is rotated by a support shaft 7 provided in the magnet device 8 to follow the preceding link frame 6 horizontally.

At the position shown in FIG. V, the first tray roller 12 and the second tray roller 13 of the carrier tray 11 which has completely climbed the rising gradient are separated from the respective guide rails, and the magnet device 8 is attached. The subsequent link frames 6 are connected linearly by force, and the
Is held horizontally and moves on the transport path. Next, at the position of VII in FIG. 2 where the carrier tray 11 has a descending gradient,
At the same time when the magnet device 8 is opened, the first tray roller 12 of the carrier tray 11 _VII is engaged with the first tray roller guide rail 15, and the second tray roller 13 is connected to the second tray roller guide. The link frame 6 between the traveling roller 4 and the magnet device 8 is held in a horizontal state while being engaged with the rail 16, and the subsequent link frame 6 is bent downward to hold the carrier tray 11 _VII in the horizontal direction and descend. I do.

As described above, the magnet device 8 for holding the carrier tray 11 in a horizontal state when the carrier tray 11 is raised or lowered is a case in which the permanent magnet 18 is divided by the magnetic shielding member 19 as shown in FIG. Rotate into 20
It is a configuration provided freely. This allows the permanent magnet 18 to be
Is rotatable about the rotation axis of the center portion of, for example, 9
By rotating in the direction of 0 °, when the NS pole is directed in a direction perpendicular to the magnetic shielding member 19 (the state shown in FIG. 3) , a magnetic force is generated, and the NS pole moves in the direction of the magnetic shielding member 19 . A known device that does not generate a magnetic force when used is used. That is, it was divided by the magnetic shielding member 19.
A magnetic material magnetized by the permanent magnet 18 is provided on the case 20.
In the state shown in FIG. 3,
While the entire magnet 21 becomes a strong magnet, the NS pole becomes
Rotated to a position along the magnetic shielding member 19 (see FIG. 3)
In the state rotated 90 ° with respect to the
The magnet 21 is not magnetized, and the magnetic force becomes very small.
The magnet 21 is provided near the support shaft 7 inside the link frame 6 as shown in FIG. On the other hand, a connecting member 22 for attaching the preceding link frame 6 is engaged with the support shaft 7, and a suction portion 23 inserted between the magnets 21 is integrally formed at the rear end of the connecting member 22. Are provided. The attracting portion 23 is provided with the magnet 21
The connection member 22 is fixed in the horizontal direction by the urging force. FIG. 4 shows the magnet 21 having the above-described configuration.
As shown in FIG. 3, a rotary shaft 24 is provided to protrude through the link frame 6, and a cross-shaped cam plate 26 having a contact surface 25 is fixed to the rotary shaft 24 in the traveling direction. Thus, it is configured to rotate by 90 ° by contacting a projection 27 protruding from a part of the gantry 2. With the magnet device 8 having the above-described configuration, if the mounting positions of the protrusions 27 are disposed at the start position of the upward slope or the downward slope and the end position of the upward slope or the downward slope, respectively, the driving of the transfer device The magnet device 8 can automatically perform energization and depolarization.

[0013]

As described above, the carrier tray-type transfer device of the present invention is capable of freely folding a link frame connected in a chain to a traveling roller traveling on a guide barrel laid along a transport path. A magnet device that operates when the link frame is horizontally disposed at a predetermined position of a support shaft that rotatably locks the link frame;
A first tray roller and a second tray roller are provided on a carrier tray provided in a horizontal direction on the link frame, and a first tray roller guide rail and a second tray are engaged with these rollers. With a carrier tray horizontal holding mechanism consisting of roller guide rails,
An apparatus which is simple in structure, has a small number of parts, and does not require gear mesh adjustment and which is excellent in maintainability as compared with a conventional rack and pinion type horizontal holding structure can be realized.

[Brief description of the drawings]

FIG. 1 is a perspective view of a carrier tray-type transfer device according to an embodiment of the present invention.

FIG. 2 is a side view showing the operation of the carrier tray type transfer device of FIG. 1;

FIG. 3 is a sectional view of a magnet of the magnet device used in FIG.

FIG. 4 is a plan view of a magnet device equipped with the magnet of FIG. 3;

FIG. 5 is a side view of the magnet device of FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carrier tray type conveyance apparatus 3 Guide rail (conveyance path) 4 Traveling roller 6 Link frame 7 Support shaft 8 Magnet device 10 Support rod 11 Carrier tray 12 First tray roller 13 Second tray roller 15 For first tray roller Guide rail 16 Guide rail for second tray roller 17 Carrier tray horizontal holding mechanism 18 Permanent magnet 26 Cam plate 27 Projection

Claims (2)

(57) [Scope of request for utility model registration] A support rod (10) for supporting the carrier tray is provided below the carrier tray (11) on which articles are placed, and a lower end of the support rod (10) is fixedly supported to move the tray in the tray advancing direction. A traveling roller (4) provided on a link frame (6) extending along is guided along a transport path (3), and the link frames (6) are vertically moved with respect to each other via a support shaft (7). To the carrier tray (1).
A first tray roller (12) and a second tray roller are provided on both sides of the carrier tray in the traveling direction so as to horizontally support the first tray roller.
(13) is provided rotatably at a predetermined interval, and along the rising gradient or the descending gradient of the transport path (3), the first
The first tray roller guide rail (15) and the second tray roller guide rail (16), which engage with and guide the second tray roller (12) and the second tray roller (13), respectively. And one of the link frames (6)
(23) provided on one end side of the
On other link frames (6) linked by (7)
, And magnetically released and magnetically released to the suction portion
Magnet device with a possible magnet (21)
It includes a (8), the link frame between adjacent fixed in a horizontal state by a magnetic force, and configured to release the fixed state between the link frame during gradient running
The carrier tray transfer device, characterized in that it is (1)
. Wherein said magnet device (8), the magnetic force or generated for adsorbing part (23) by the rotation direction
It has a permanent magnet (18) that disappears, and the permanent magnet (18)
Rotary shaft rotatably held on link frame (6)
(24) is provided with a cam plate (26) for rotating the magnet.
Is to have the carrier tray transfer device according to claim 1, wherein a protrusion for rotating the cam plate in contact with the cam plate (26) (27) provided on the frame (2) .