JPH0585444B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to shelving equipment employed for storing loads directly or via pallets and for taking them out when necessary.

BACKGROUND ART Conventionally, this type of shelving equipment, as seen in, for example, Japanese Utility Model Publication No. 18750/1983, is a system in which a wheel rail having a large number of wheels is mounted on a frame and the conveyance (sliding) direction of the wheel rail is inclined. A structure is provided in which they are arranged in multiple upper and lower stages. According to this conventional structure, the load thrown into the upper part of the slope slides on the wheel and is received by a stopper provided at the lower end, and the loads thrown in sequentially are received by the previous load and stored. It turns out. The stored load is then taken out from the lower part of the slope as needed, and the removal trace is filled in by the sliding of the rear load. In this conventional example, the load is
Loading and unloading is done manually, but for large shelves that handle large loads, for example, a forklift vehicle is used to load and unload the load.

Problems to be Solved by the Invention According to the conventional system as described above, the load is moved by sliding using the free rotation of the wheels, so the free rotation may not be carried out smoothly or there may be variations in the load. In some cases, the sliding cannot be performed reliably, resulting in poor reliability. Furthermore, in view of frictional resistance, for example, some pallets may not be usable depending on their material. For these problems, it is possible to set a sufficient angle of inclination, but if the angle of inclination is large, the sliding speed will be high and not constant, and the impact will be large when the load is caught by the stopper. This results in poor stability. Moreover, the dead space on the slope will be expanded, resulting in inefficient storage.

An object of the present invention is to provide shelving equipment using a conveying device that can reliably move loads at a constant speed while keeping the conveying direction horizontal, and that can eliminate the need for electrical control at all. .

Means for Solving the Problems In order to achieve the above object, the shelving equipment using a conveying device of the present invention is provided with conveying devices arranged on a shelf frame in multiple stages above and below with the conveying direction horizontal, In addition to dividing into multiple groups in the conveyance direction, the drive device can be connected and separated for each group via a fluid-based actuation device, and each group is divided into mechanical valves and shuttle valves whose actuation rods protrude beyond the conveyance surface. For two groups adjacent in the conveyance direction, both actuating devices operate to the connecting side when the downstream group is absent, and for the most downstream group, the actuating device operates to the separating side when cargo is present. In order to operate the valve, an operating circuit is provided that includes these actuating devices and the valve device.

Effect According to the configuration of the present invention, when there is no transported object on the transport path, the transport device is in a driving state over the entire length of the transport path, and therefore the transported object supplied to the upstream end The objects are supported by the conveying device and subjected to conveying force, and are sequentially conveyed toward the downstream end. The items are then stored sequentially from the downstream end upstream.At this time, in the most downstream group, a mechanical valve detects the presence of the cargo through the operating rod, and this causes the actuating device to separate via the valve device. It operates to the side and becomes non-driven.
Furthermore, in subsequent groups, the transport device will not apply feeding force to the stored objects because they will not be driven due to simultaneous presence of items in the downstream group. When a group with no objects to be transported is generated, the actuating devices for this group and the group with existing objects on the upstream side are activated on the connection side, and both groups are simultaneously driven to transport the objects to be transported on the upstream side. The objects are conveyed downstream, and thus the objects can be transported sequentially and stored densely from the downstream end to the upstream side. During such operation, each actuating device as well as each valve device can be controlled entirely by fluid flowing through the actuating circuit.

Embodiment An embodiment of the present invention will be described below based on the drawings.

In FIGS. 15 and 16, 60 is a shelf frame, which includes a plurality of front columns 61 on the left and right, and a plurality of rear columns 6 on the left and right.
2 and the front cross member 63 that connects the front strut 61.
and a rear cross member 64 that connects the rear strut 62;
It is composed of front and rear members 65 that connect the front and rear columns of the front column 61 and the rear column 62, and the like. This shelf frame 60
A conveyance device 3 consisting of a pair of left and right roller conveyors 1 and 2 having a large number of idle rollers is provided in a plurality of partitions in the left and right direction formed between the pillars 61 and 62.
are arranged in a plurality of upper and lower stages, with the transport direction 4 being horizontal. That is, Figures 15 to 18
As shown in the figure, the main frame 5 of both roller conveyors 1, 2 includes a pair of left and right side frames 5A, 5B, and a base frame 5 that connects the lower parts of these side frames 5A, 5B.
It is composed of C. This base frame 5C has a plurality of pieces in the conveying direction 4, and the both side frames 5C are connected to each other via bolts and nuts 6A, 6B passed from below
Connected between A and 5B. Further, the outer side frames 5A and 5B are fixed to the shelf frame 60 via bolts and nuts 7A and 7B. Both sides frame 5
L-shaped guide portions 8A, 8B are formed on the opposing inner surfaces of A, 5B, and dovetail groove portions 10A, 10B are formed in the upper portions to allow sliding of nut bodies 9A, 9B. Further, on the inner side of the lower part of the outer side frame 5A of one roller conveyor 1, a pair of upper and lower guide rails 11 and 12 are arranged in the length direction of the frame via respective attachment parts. Resin-made support frames 13A, 13B are provided on the inner surfaces of the both side frames 5A, 5B so that their lower ends are fitted so that their positions can be changed (slidably) in the length direction of the frames, and these support frames 13A, 13B are , bolts 15A, 15 passed through the mounting holes formed in the intermediate part.
It is fixed at the changed position by screwing B into the nut bodies 9A and 9B. The outer support frame 13A of one roller conveyor 1 has a case shape, and includes a base plate 16 having a lower end and a mounting hole to fit into the guide portion 8A, and
It is formed by a pair of front and rear cover plate parts 17 that are connected inward from the inner surface of the lower half of the board, and a connecting plate part provided between the lower ends of these cover plate parts 17, and from the mounting hole of the base plate part 16. A pair of upper and lower through-holes 18a and 18b are formed at the upper side. Note that the inner support frame 13 of the other roller conveyor 2
Similar through holes 18a and 18b are also formed in A. The remaining support frames 13B of both roller conveyors 1 and 2 are rectangular plate-shaped, and on both sides of the pair of mounting holes 14B, there are locking grooves 19a and 19b with open upper and lower end surfaces in the height direction and inner surfaces. is formed. Here, the distances L 1 and L 2 from the inner parts of the locking grooves 19a and 19b to the attachment hole 14B are the distances L ₁ and L ₂ from the attachment hole in one support frame 13A to the through hole 18a,
The distances L ₁ and L ₂ to 18b are set equal. Idle rollers 22, 22a made of resin are rotatably provided between the support frames 13A, 13B via a roller shaft 21. That is, one end of the roller shaft 21 inserted so as to freely rotate relative to each other is inserted into either of the through holes 18a, 18b, and the other end is inserted into the locking grooves 19a, 19.
The roller shaft 21 can be attached by dropping it from above onto either of the rollers 22 and 22a, and the idling rollers 22, 22a can freely rotate around the roller axis 23.
Outer support frame 1 in one roller conveyor 1
A support shaft 24 along the roller axis 23 is attached to 3A so as to be vertically swingable. That is, a bearing hole 25 is formed at the lower end of the base plate part 16, and the inner end of the support shaft 24 is fitted into the bearing hole 25, so that it can freely swing up and down. Then, an L-shaped plate part 26 made of resin is inserted between the free ends of the cover plate part 17, and the outer end of the support shaft 24 is fitted into a vertical recess formed in the vertical plate of this L-shaped plate part 26. Together, the vertical swing range of the support shaft 24 is regulated. A sprocket 27, which is an example of a passive wheel, is rotatably attached to the support shaft 24, and a transmission roller 28 is fitted onto the boss portion of the sprocket 27, so that both 27 and 28 can rotate together. This transmission roller 28 is made of urethane rubber, and its outer periphery is connected to the idle roller 22.
The lower part of the outer periphery can be freely contacted and separated. An air cylinder device 29, which is a fluid-based actuating device for contacting and separating, is interposed between the cylinder rubber receiver 30 attached to the outer end of the support shaft 24 and the horizontal plate of the L-shaped plate portion 26. There is. The above-mentioned 24 to 30 constitute one unitized drive device 31, and this drive device 31 is arranged in large numbers on the main body frame 5, forming one set with the idle roller 22 via the support frames 13A, 13B, etc. be done. A chain 32, which is a common driving body interlocked with each sprocket 27, is connected between a driving sprocket 33 and a driven sprocket 34.
It is stretched through a guide sprocket 35, etc.
A drive sprocket 33 is operatively connected to a motor 36.

As described above, the idle roller 22 paired with the drive device 31 and the free idle roller 22a that is not paired are mounted on the main body frame 5 at a set pitch P.
By arranging both roller conveyors 1 and 2
A conveyance path 37 is formed by this. Reference numeral 38 denotes an object to be transported, which is handled via a pallet 39. Note that a stopper 66 fixed to the shelf frame 60 side is provided at the end of the conveyance path 37.

As described above, the idle rollers 22 paired with the drive device 31 are divided into multiple groups, with each group consisting of six rollers arranged in a predetermined manner, as shown in FIGS. 1 and 4, for example, in eight groups in the embodiment. A, B,
C, D, E, F, G, and H are arranged, and each group is connected to a drive device 31 via an air cylinder device 29.
can be connected and separated at will. That is, in each group, a supply/discharge hose 40 with an air cylinder device 29 connected in series is provided, and a mechanical valve 42 with an operating rod 41 protruding beyond the conveyance surface 3a is provided.
A valve device 44 that integrates a shuttle valve 43 and a shuttle valve 43.
has been established. This valve device 44 is arranged except for the most upstream group, and has a first port _P1 , a fourth port _P4 , and a fifth port on the downstream side of the main body 45 made of resin.
P ₅ and a second port on the upstream side.
_P2 and a third port _P3 . The air supply hose 46 from the air supply source is connected to the first port P ₁ in the most downstream valve device 44, and the second port P ₂ in the upstream valve device 44 is connected to the first port P 1 in the downstream valve device 44. 1 port _P1 is connected with an air supply hose 47. In each main body 45, the first port _P1 and the second port _P2 are connected to the communication path 4.
8, and the mechanical valve 42 is interposed in a branch path 49 from the middle of this communication path 48. This mechanical valve 4
2 is the communication 4 when the operating rod 41 is not detected and is in the upright position.
2a, and is configured to shut off 42b when detected as being tilted. The other end of the communication path 48 communicates with the fourth port _P4 via the shuttle valve 43. A supply/discharge path 50 communicating with the middle of the shuttle valve 43 communicates with the supply/discharge hose 40 via the fifth port _P5 . A supply path 51 is branched from the branch path 49 between the mechanical valve 42 and the shuttle valve 43, and this supply path 51
The end portion thereof communicates with the third port _P3 . and a third port P ₃ in the downstream valve device 44 and a fourth port P ₄ in the adjacent upstream valve device 44
are connected via a relay hose 52. Hose connections to each port P ₁ to _{P 5} are made via one-touch type fittings. In addition, in the second group G from the upstream, its second port P ₂
is closed 53, and the relay hose 52 is connected to the supply/discharge hose 40 of the most upstream group H.
The above-mentioned hoses 40, 46, 47, 52, etc. constitute an operating circuit 54 that interposes the air cylinder device 29 and the valve device 44, and this operating circuit 54
When the downstream group of two groups adjacent in the transport direction 4 is absent, both air cylinder devices 29 are operated to the connection side, and when the most downstream group A is loaded, the air cylinder device 29 is operated to the separation side. It will be activated.

Next, the conveyance work in the above embodiment will be explained.

17 and 18, the valve device 44 is operated to the connection side in order to supply compressed air to the supply/discharge hose 40, the support shaft 24 is swung upward by the extension of the air cylinder device 29, and the transmission roller 28 is The state in which the rollers are pressed against the corresponding idle rollers 22 from below is shown. At this time, the chain 32 is constantly being driven by the motor 36, and therefore the sprocket 27 engaged with the chain 32 is rotating around the support shaft 24. Further, the transmission roller 28 is in contact with the lower part of the outer circumference of the idle roller 22, so that the group of idle rollers 22 is forcibly rotated. As a result, the pallet 39 on the conveyance path 37 is supported between the idle rollers 22, 22a of both roller conveyors 1, 2,
Then, it can be transported on this transport path 37 while receiving the transport force due to the forced rotation of the idling roller 22 group on one side.

The conveying device 3 consisting of a pair of roller conveyors 1 and 2 basically conveys a pallet (object to be conveyed) 39 as described above, but in reality, the operating rod 41 of the valve device 44 conveys the pallet. Detected 39,
Conveyance control is performed based on non-detection.
That is, the compressed air supplied from the air supply source via the air supply hose 46 is passed between the respective valve devices 44 from the downstream side to the communication path 48, the air supply hose 47, the communication path 48, the air supply hose 47, and so on. ..., and each communication path 48 is in a pressurized state. When the transport path 37 is empty, the operating rod 41 of each mechanical valve 42 protrudes without being detected, and the second
As shown in the figure, since the branch path 49 is in communication with the branch path 42a, compressed air can flow between the communication path 48 and the branch path 42a.
9. The air flows through the shuttle valve 43, the supply/discharge path 51, and the supply/discharge hose 40, and each air cylinder device 29 is extended to bring the transmission roller 28 into contact with the lower part of the idle roller 22, thereby all groups A to H All idle rollers 22 are forced to rotate. In this state, when the pallet 39 is unloaded onto the group H at the upstream end by the forklift vehicle 56, the mechanical valve 42 of the group G is detected and tilted by the operating rod 41 as shown in FIG. Block 49 4
It will be 2a. However, since the mechanical valve 42 of the group F one downstream is not detected as described above, a part of the compressed air supplied to this group F is transmitted to the supply path 51, the relay hose 5
2, etc., to the shuttle valve 43, which causes the air cylinder device 17 of group G to extend and move, and the idling rollers 22 of groups G and F are forcibly rotated to move the pallet 39 from group G to group G. Transport to F. When the pallet 39 enters the group F, the mechanical valve 42 of this group F is detected, but since the group E is not detected as described above, the idling roller 22 group of the group F is similarly forced to rotate. , pallet 39 is transported from group F to group E. The pallets 39 thus conveyed sequentially to the downstream side come into contact with the stopper 66, stop, and are stored in group A. This palette 3
9 is detected by the mechanical valve 42 of group A and operates to shut off 42b, thereby stopping the supply of air to the supply/discharge hose 40 of group A, and at the same time, the supply/discharge hose 40 is disconnected via the fourth port _P4 . It is opened, and the air cylinder device 29 of group A contracts due to the load on the support shaft 24 side. As a result, the transmission roller 2
8, all idle rollers 2
Stop the forced rotation of step 2. 2nd palette 3
9 is also conveyed in the same manner, and is stored in group B by coming into contact with the pallet 39 of group A.
At this time, group B is detected, but since group A is also detected, air is not supplied via the relay hose 52, and group B is also separated. In such an operation, for example, as shown in FIG. 4, it is assumed that the pallets 39 are stored in all groups A to H and all are moved separately. In this state, the forklift vehicle 56
When the pallet 39 of group A is taken out as shown in FIG. 5, the mechanical valve 42 of group A becomes non-detecting as shown in FIG. The pallet 39 of group B is conveyed to group A as shown in FIG. Then, group B mechanical valve 4
2 is not detected, groups B and C are connected as shown in FIG. 1, and the pallet 39 of group C is conveyed to group B as shown in FIG. By repeating these actions,
The pallets 39 can be sequentially fed as shown in FIGS. 7 to 11.

For example, as shown in FIG. 9, when the mechanical valve 42 of group F is not detected, the first
As shown in FIG. 2, when the pallets 39 of group A are further removed, sequential feeding is performed at two locations in the direction of the conveyance path 37, as shown in FIGS. 13 and 14. In the same way, sequential feeding of three or more locations is also performed.

Although the roller conveyors 1 and 2 are shown as the conveyance device 3 in the above embodiment, it may be a belt conveyor, a chain conveyor, a roller chain conveyor, or the like.

Effects of the Invention According to the present invention having the above configuration, when there is no object to be transported at all on the transport path, the transport device is in a driving state over the entire length of the transport path, and therefore the transport device is in a driving state over the entire length of the transport path. The objects to be conveyed can be sequentially conveyed toward the downstream end by being supported by the conveying device and receiving a conveying force. The objects to be transported are then stored sequentially from the downstream end toward the upstream. At this time, in the most downstream group, a mechanical valve is detected and moved via an operating rod depending on the presence of the cargo, and this causes the mechanical valve to be activated via a valve device. The device operates to the separating side and becomes non-driving, and in subsequent groups, it becomes non-driving due to the simultaneous presence of items in the downstream group, so the conveying device applies feeding force to the stored objects. Therefore, damage to the transported objects and the transport device can be prevented. When a group with no objects to be transported is generated, the actuating device for this group and the upstream group is activated on the connection side, and both groups are simultaneously driven to move the objects on the upstream side downstream. Can be transported to the side,
As a result, the objects to be transported can be transported sequentially and can be stored densely from the downstream side to the upstream side. In this way, only the necessary objects to be transported can be forcibly moved within the shelf, and the movement (progressive feeding) can always be carried out reliably regardless of variations in load or the material of the pallet. Moreover, since the moving speed can be made constant, stable conveyance can be performed. Furthermore, it can be arranged horizontally, eliminating the conventional sloping dead space, and providing shelf equipment with high storage efficiency.

In particular, according to the present invention, each actuating device and each valve device can be controlled entirely by the fluid flowing through the actuating circuit during operation as described above, thereby eliminating the need for expensive and complicated electricity. control is completely unnecessary. In addition, since the valve device is an integrated mechanical valve and shuttle valve, it is possible to improve productivity and reduce costs, and it is also easy to connect hoses to form an operating circuit. be able to.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a schematic side view of the main parts, Figs. 2 and 3 are explanatory diagrams of the operation of the valve device, and Figs. 4 to 14 are schematic diagrams showing the state of use. 15 is an overall side view, FIG. 16 is a front view of the same, FIG. 17 is a partially cutaway front view of main parts,
FIG. 8 is a partially cutaway side view of the same. 1, 2... Roller conveyor, 3... Conveying device,
3a... Conveyance surface, 4... Conveyance direction, 21... Roller shaft, 22, 22a... Idle roller, 24... Support shaft, 27... Sprocket (passive wheel body), 28...
...Transmission roller, 29... Air cylinder device (actuating device), 31... Drive device, 32... Chain (driving body), 37... Conveyance path, 39... Pallet,
40... Supply/discharge hose, 41... Operating rod, 42...
Mechanical valve, 43... Shuttle valve, 4
4... Valve device, 46... Air supply hose, 47... Air supply hose, 48... Connection path, 49... Branch path, 5
0... Supply/discharge path, 51... Supply path, 52... Relay hose, 54... Operating circuit, 60... Shelf frame, 66
...Stoppa, A to H...Group, P ₁ to _{P 5} ...
…port.

Claims (1)

[Claims] 1. Conveying devices are arranged on a shelf frame in multiple stages above and below, with the conveying method being horizontal, and the conveying devices are divided into a plurality of groups in the conveying direction, and each group is driven via an actuating device using fluid. The devices can be freely connected and separated, and each group is provided with a valve device that integrates a mechanical valve and a shuttle valve with operating rods that protrude beyond the conveying surface. In order for both actuators to operate to the connection side when there is no cargo, and for the most downstream group to actuate to the separation side when there is a load, an actuation circuit is provided that interposes these actuators and the valve device. Shelving equipment that uses a characteristic conveyance device.