JPH0547125Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a shelving facility using rollers that is used to store loads directly or via pallets and to take them out as needed.

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 that the invention aims to solve According to the conventional method 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 load will be affected by a large impact when it is caught by the stopper. stability becomes poor. Moreover, the dead space on the slope will be expanded, resulting in inefficient storage.

An object of the present invention is to provide a shelving facility using rollers that can reliably move loads at a constant speed while keeping the conveyance direction horizontal.

Means for Solving the Problems In order to achieve the above object, the roller-using shelving equipment of the present invention has roller conveyors having a large number of idle rollers arranged in upper and lower stages in a shelf frame with the conveyance direction being horizontal. The idling rollers in each stage are divided into multiple groups in the transport direction, and the drive device can be connected and separated to some of the idling rollers in each group, and adjacent rollers in the transport direction The two groups are configured so that the drives connect and operate simultaneously when the upstream group is stocked and the downstream group is not stocked, and the drive units of the most downstream group are configured to separate and operate when the downstream group is stocked. It is configured as much as possible.

Effect According to the configuration of the present invention, in the roller conveyor of each stage, when a group in which there is no conveyed object is generated, the drive device for this group and the group is connected to and operates the upstream goods. Then, some idle rollers in both groups are forcibly rotated at the same time. Therefore, the objects to be transported on the upstream side are transported to the downstream side, and thereby the transported parts can be transported sequentially and stored densely from the downstream end to the upstream side.

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

Reference numeral 50 denotes a shelf frame, which includes a plurality of front columns 51 on the left and right, a plurality of rear columns 52 on the left and right, a front cross member 53 connecting between the front columns 51, and a rear cross member 54 connecting between the rear columns 52. , a front and rear member 55 that connects the front and rear columns of the front column 51 and the rear column 52, and the like. In a plurality of compartments in the left and right direction formed between the columns 51 and 52 of the shelf frame 50, roller conveyors 60 having a large number of idle rollers are disposed in upper and lower stages, respectively, with the conveyance direction being horizontal. be done. That is, the main body frame 1 of the roller conveyor 60 is composed of a pair of left and right side frames 1A, 1B, and a base frame 1C that connects the lower portions of these side frames 1A, 1B. This base frame 1C has a plurality of bolts 61 in the transport direction, and the bolts 61 are passed from below.
Plate nuts 6 formed by fitting A and 61B into dovetail grooves 62A and 62B formed on the lower surfaces of side frames 1A and 1B.
3A, 63B and tightening, it is connected between both side frames 1A, 1B. Also, both side frames 1A, 1
Dovetail grooves 64A, 64B are formed on the outer surface of B at two (multiple places) on the upper and lower sides, and plate nuts 65A, 65B are fitted into these dovetail grooves 64A, 64B. Then, bolts 66A, 66B passed through the pillars 51, 52 from the side are inserted into the plate nuts 63A,
The main body frame 1 is fixed to the shelf frame 50 by screwing and tightening the main frame 63B. L-shaped guide portions 2A, 2B are provided on the opposing inner surfaces of both side frames 1A, 1B.
is formed, and nut bodies 3A and 3B are formed on the upper part.
Dovetail grooves 4A and 4B are formed to allow sliding. Further, on the inner surface of the lower part of one side frame 1A, a pair of upper and lower guide rails 7 and 8 are disposed in the longitudinal direction of the frame via mounting portions 5 and 6, respectively. Resin-made support frames 9A, 9B are provided on the inner surfaces of the side frames 1A, 1B so that their lower ends are fitted so that their positions can be changed (slidably) in the frame length direction, and these support frames 9A, 9B are , the bolt 1 passed through the mounting holes 11A and 11B formed in the middle part.
By screwing 0A and 10B into the nut bodies 3A and 3B, they are fixed at the changed position. Of the one support frame 9A, every other support frame 9A is case-shaped, and includes a base plate part 12 having a lower end to be fitted into the guide part 2A and a mounting hole 11A, and a lower half of this base plate part 12. It is formed by a pair of front and rear cover plate parts 13 that are connected inward from the inner surface, and a connecting plate part 14 provided between the lower ends of these cover plate parts 13, and the mounting hole 11 of the base plate part 12.
Above A, there is a pair of upper and lower through holes 15a, 15.
b is formed. Note that similar through holes 15a and 15b are also formed in one support frame 9A that is not case-shaped. The other support frame 9B has a rectangular plate shape, and has locking grooves 1 on both sides of the pair of mounting holes 11B that are open on the upper and lower end surfaces in the height direction and on the inner surface.
6a and 16b are formed. Here, locking groove 1
The distances L ₁ and L ₂ from the backs of 6a and 16b to the mounting holes 11B are the distances from the mounting holes 11A to the through holes 15a and 15b in one support frame 9A.
It is made equal to L ₁ and L ₂ . Both support frames 9A, 9B
In between, an idler roller 28 made of resin is rotatably provided via a roller shaft 27. That is, one end of the roller shaft 27 inserted so as to freely rotate relative to the through hole 15
The roller shaft 27 can be attached by inserting it into either one of the locking grooves 16a and 15b and dropping the other end into either of the locking grooves 16a and 16b from above. can be freely rotated. A support shaft 18 along the roller axis 29 is attached to one support frame 9A so as to be vertically swingable.
That is, a bearing hole 19 is formed at the lower end of the base plate part 12, and the inner end of the support shaft 18 is fitted into the bearing hole 19, so that it can freely swing up and down. An L-shaped plate part 23 made of resin is inserted between the free ends of the cover plate part 13, and the outer end of the support shaft 18 is inserted into the vertical recess 24 formed in the vertical plate of the L-shaped plate part 23. By fitting together, the vertical swing range of the support shaft 18 is restricted. A sprocket 20, which is an example of a passive wheel, is rotatably attached to the support shaft 18, and a transmission roller 21 is fitted onto the boss portion of the sprocket 20, so that both 20 and 21 can rotate together. The transmission roller 21 is made of urethane rubber, and its outer periphery is able to come into contact with and separate from the lower outer periphery of the idle roller 28 . An air cylinder device 17 for making contact and separation is interposed between a cylinder rubber receiver 22 attached to the outer end of the support shaft 18 and the horizontal plate of the L-shaped plate portion 23. The above-mentioned 17 to 24 constitute one unitized driving device 25, and this driving device 25 is connected to one unit via support frames 9A, 9B, etc.
A large number of rollers are arranged on the main body frame 1, forming one set with the second idler roller 28. Each sprocket 20
A chain 30, which is a common driving body interlocked with the motor 34, is stretched between the driving sprocket 31 and the driven sprocket 32 via a guide sprocket 33, etc., and connects the driving sprocket 31 to the motor 34.
It is linked and linked.

As described above, the idling roller 28 paired with the drive device 25 and the undriven idling roller 2 not paired with the driving device 25.
8a are arranged at every other set pitch P on the main body frame 1, thereby forming a conveyance path 38 by the group of idle rollers 28. Reference numeral 39 denotes objects to be transported, which are handled via a pallet 37. A stopper 56 fixed to the shelf frame 50 is provided at the end of the conveyance path 38.

For example, as shown in FIG. 9, the above-mentioned idling rollers 28 are divided into a plurality of groups, each group consisting of six rollers in a predetermined arrangement; in the embodiment, eight groups A,
B, C, D, E, F, G, and H are arranged, and the drive device 25 can be freely connected to and separated from every other idle roller 28 for each group. That is, each group is provided with a supply/discharge hose 40 to which the air cylinder device 17 is connected in series, and these supply/discharge hoses 40 are connected to a common air supply hose 43 from an air supply device 42 via a solenoid valve 41, respectively. It is configured so that it can be connected selectively. 44 is a regulator, 4
5 indicates a silencer. Each group A, B, C
...H are each provided with a photoelectronic switch 46, which is an example of a stock detector. Here, two groups adjacent in the transport direction 47 are detected by the photoelectronic switch 46 of the upstream group and the photoelectronic switch 46 of the downstream group.
When not detected, the driving devices 25 of both groups are configured to connect simultaneously (connecting the air supply hose 43 and the supply/discharge hose 40). When the photoelectronic switches 46 in both groups are in the detecting operation or in the non-detecting operation at the same time, the driving devices 25 in both groups are configured to perform the separating operation (separating the air supply hose 43 and the supply/discharge hose 40) at the same time. For this purpose, each solenoid valve 41 is integrated into a respective control unit 48. Further, only the most downstream group A is configured so that the drive device 25 separates and moves when the photoelectronic switch 46 detects the movement.

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

In FIGS. 3 and 4, the solenoid valve 41 is switched to connect the air supply hose 43 to the supply/discharge hose 40, the support shaft 18 is swung upward by the expansion of the air cylinder device 17, and the transmission roller 21 is moved to the corresponding position. The idling roller 28 is pressed from below. At this time, the motor 3
4, the chain 30 is constantly driven, and therefore the sprocket 2 engaged with the chain 30
0 is rotating around the support shaft 18. Further, the transmission roller 21 is in contact with the lower outer circumference of the corresponding idle roller 28, so that the group of idle rollers 28 is forcibly rotated, and the pallet 3 is moved on the conveyance path 38.
7 can be transported. At this time, the non-driven idle roller 28a performs follow-up rotation.

The roller conveyor 60 basically conveys the pallet (object to be conveyed) 37 as described above, but in reality, conveyance control is performed based on detection or non-detection of the photoelectronic switch 46. That is, when the pallet 37 is unloaded onto the group H at the upstream end by the forklift vehicle 68 when the transport path 38 is empty, the photoelectronic switch 46 of the group H
is detected, but the photoelectronic switch 46 of group G
Since this is not detected, the idle rollers 28 of both groups H and G are forcibly rotated by the operation of the control unit 48 and the solenoid valve 41, thereby conveying the pallet 37 from group H to group G. When the pallet 37 enters group G, the photoelectronic switch 46 of this group G operates to detect it, but since it does not detect it in group F, groups G and F operate to connect, and the pallet 37 is transferred from group G to group F. transport. The pallets 37 sequentially conveyed to the downstream side in this way are delivered to the stopper 5.
6 and stops, and is stored in group A. This palette 37 is transferred to the photoelectronic switch 46.
Detects this, group A will separate and move. The second pallet 37 is conveyed in the same manner, and is stored in group B by coming into contact with the pallets 37 of group A. At this time, group B
However, since group A is also detected, this group B will also be separated. In such an operation, for example, as shown in FIG. 6, it is assumed that the pallets 37 are stored in all groups A to H and all are moved separately. In this state, when the pallet 37 of group A is taken out by the forklift vehicle 68 as shown in FIG. As shown in FIG. 8, the pallets 37 of group B are conveyed to group A. Then, since the photoelectronic switch 46 of group B is not detected, groups B and C are connected, and the pallet 37 of group C is conveyed to group B as shown in FIG. By repeating such actions, the 10th
The pallets 37 can be sequentially fed as shown in FIGS.

For example, when the photoelectronic switch 46 of group F is in a non-detecting state as shown in FIG. 12, the pallet 3 of group A is
7 is removed, sequential feeding is performed at two locations in the direction of the conveyance path 38, as shown in FIGS. 16 and 17. Similarly, sequential feeding of three or more locations is also performed.

In the above embodiment, the driven idling roller 28 and the non-driven idling roller 28a were arranged every other time.
This may be a configuration in which idle rollers 28 are arranged every second. In addition, by using idle rollers 28 at the downstream end of each group A to H, even if it is a resin pallet, it is possible to reliably send out from that group, especially when shelving equipment is assembled into an automated warehouse. When the cargo is loaded, the automatic operation of the loading/unloading device can be performed reliably.

Effects of the invention According to the invention having the above configuration, in the roller conveyor of each stage, when a group in which there is no conveyed object is generated, the drive device for this group and the upstream loaded group is connected and operated. Therefore, some idle rollers in both groups are forcibly rotated at the same time, and the objects to be conveyed on the upstream side can be conveyed to the downstream side. It is possible to store 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 reliable movement (progressive feeding) can always be performed 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. Furthermore, since some of the idle rollers in each group are driven, the drive device can be provided at a lower cost than when all of the idle rollers are driven.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view, FIG. 2 is a front view, FIGS. 3 and 4 are front views with a partial cutaway of the main part, and FIG. Notched side view,
6 to 17 are schematic side views showing the state of use. 1... Body frame, 7, 8... Guide rail, 17... Cylinder device, 18... Support shaft, 20
... Sprocket, 21 ... Transmission roller, 25 ...
... Drive device, 28 ... Idle roller, 28a ... Non-driven idle roller, 30 ... Chain, 34 ... Motor, 37 ... Pallet, 38 ... Conveyance path, 3
9... Object to be transported, 41... Solenoid valve, 46... Photoelectronic switch (load detector), 47... Transport direction,
48...control unit, 50...shelf frame, 51...
Front column, 52... Rear column, 56... Stopper, 60... Roller conveyor.

Claims (1)

[Scope of utility model registration request] A roller conveyor with a large number of idle rollers is arranged on the shelf frame in multiple stages above and below with the conveyance direction horizontal, and the idle rollers of each stage are divided into multiple groups in the conveyance direction, and each group is The drive device is connected to some of the idle rollers in the group of idle rollers so that they can be separated freely, and the two groups adjacent in the conveyance direction are set when the upstream group is loaded and the downstream group is not loaded. A shelving equipment using rollers, characterized in that the drive devices are configured to connect and move simultaneously, and the drive devices are configured to separate and move the most downstream group when the group is stocked.