JPH059322B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to shelving equipment using rollers, which is employed to store loads directly or via pallets and to take them out as needed.

BACKGROUND ART Conventionally, as this type of shelving equipment, a fluidized shelving system as shown in, for example, Japanese Utility Model Application No. 61-191304 has been provided. This fluidized shelf has roller groups arranged in multiple stages above and below on a framework, and in each stage, flexible tubes are arranged below the members that support the roller groups, and the members are reciprocated in the length direction. A cylinder is provided to allow the

According to the configuration of this fluidized shelf, the fixed load receiving unit is moved while sequentially and intermittently moving the pallets by a combination of raising and lowering the roller group by the expansion and contraction of the flexible tubes and reciprocating the members in the length direction by cylinders. It can be supported by a member.

However, according to this conventional configuration, since a plurality of pallets are intermittently moved at the same time, when a subsequent pallet is supplied at intervals with respect to the preceding pallet, until the subsequent pallet comes into contact with the preceding pallet,
It is necessary to move the following pallets intermittently while all the pallets are being moved up and down, and therefore a large lifting force is required to move the roller group up and down.
In addition, when the cylinder reciprocates the member in the length direction, the roller rotates frictionally against the bottom of the pallet group that is stopped in advance, so the total frictional force increases, resulting in a large reciprocating movement. Since it requires force and repeats back and forth rotation, it can damage the bottom of the pallet, making it impossible to handle the load directly.

Such problems can be seen in, for example, Japanese Patent Application Laid-open No.
This problem can be solved by incorporating an accumulation conveyor device as seen in No. 51676 or a conveyance control device as seen in Japanese Patent Application Laid-open No. 119647/1988 into the framework.

In other words, the former accumulation conveyor device consists of a carrier roller and this carrier roller.
A unit is constituted by a detection means for detecting that there is an object to be transported on the roller, and a control means for controlling rotation stop of the carrier roller, which has first and second switches, and the carrier roller in this unit is The units are arranged in series either directly or with free rollers interposed therebetween, and the control means in each unit are connected in a subordinate manner.

According to this accumulation conveyor device, when the conveyed object reaches the carrier roller, it is detected by the detection means, and a signal is sent to the control means, which turns on the first switch and rotates the carrier roller. , send the goods to the lower level. When the conveyed object passes the carrier roller, the first switch is turned off and the carrier roller stops rotating. At this time, the conveyed object undergoes inertial movement, reaches the next carrier roller, is detected by the detection means, and is sent downstream in the same manner as described above. Furthermore, in the storage state, the first switch is on but the second switch is off, so the carrier roller stops rotating.

The latter conveyance control device includes a plurality of roller groups, a first material detector facing the boundaries between the roller groups, a second material detector slightly upstream of each boundary, and a second material detector located slightly upstream of each boundary. One group of material detectors is connected to a tracking device, and a second group of material detectors is connected to a control device.

According to this conveyance control device, the tracking device recognizes steel materials individually through the detection operation of the first material detector, and also recognizes a group of steel materials that may be conveyed at the same time as one virtual steel material. The tracking device recognizes the movement of the virtual steel material even during transportation. When the leading material of the virtual steel material is to be blocked by one roller group, when the leading material completes entering a predetermined roller group, the tracking device is commanded to separate the leading material. The second material detector detects the tip of each steel material and instructs the control device to stop the material at a predetermined position.

Problems to be Solved by the Invention According to the conventional accumulation conveyor device described above, when the inertial movement of the transported object is small due to the weight of the transported object or the rotational speed of the carrier roller, the transported object is The carrier roller may not be reached or may not ride on top of the carrier roller, making it impossible to smoothly move the transported object. In addition, when the inertial movement of the transported object is large, it will strongly collide with the stopped transported object in front of it, and the impact may disturb the storage posture of the transported object group, or if the transported object is a pallet, the loading object may become unstable. The position of the placed load may be disturbed.

In addition, according to the conventional conveyance control device described above, a roller group collective drive device and two detectors are required for each roller group, making the whole complex and expensive. The overall control becomes complicated due to the use of devices.

The object of the present invention is to provide a shelving facility using rollers that allows constant and reliable movement of loads without causing unexpected collisions, allows for dense storage of loads, and simplifies control and control equipment. It is in the point of doing.

Means for Solving the Problems In order to achieve the above object, the shelving equipment using rollers of the present invention has a conveyance path consisting of a large number of idle rollers formed in a shelf frame in multiple stages above and below, with the conveyance direction being horizontal. Then, the idle rollers of each stage are divided into a plurality of groups corresponding to each conveyed object in the conveyance direction,
A common driving body is disposed along the conveyance path, and a transmission device is provided between the driving body and the idling roller, and this transmission device is a transmission device that can freely come into contact with and separate from the lower part of the outer periphery of the idling roller. Each group can be connected to and separated from the idling roller via the roller,
One inventory detector is provided for each group, and for two groups adjacent in the conveyance direction, when the inventory detector of the upstream group is in the detecting state and the downstream group's inventory detector is not detecting, The transmissions are configured to connect and move at the same time, and the most downstream group is configured so that the transmissions are separated when the presence detector detects the movement.

According to the configuration of the present invention, by operating the common drive body in the conveyance path of each stage,
The transmission rollers of the transmission in all groups can be rotated. In this state, when the downstream group where there is no conveyed object and the presence detector does not detect it, and the upstream group where there is a conveyed object and the presence detector does not detect it, both groups The transmission device operates to bring the transmission roller into contact with the lower outer periphery of the idle roller. As a result, the idle rollers of both groups are driven to rotate simultaneously, and the objects to be transported in the upstream group are transported to the downstream group. By such an operation, the objects to be transported can be sequentially transported on a horizontal transport path.

By this sequential feeding, the downstream group in which there was no conveyed object is filled and the conveyed object is detected by the load detector, and the conveyed object is not present in the upstream group and the load detector is inactive. When the detection occurs, the transmission rollers of this downstream group separate from the lower outer periphery of the idle rollers and stop driving, so that the conveyed object can be positioned within this downstream group.

By repeating such operations, the objects to be transported can be transported one by one from the downstream end to the upstream side of each group on the horizontal transport path, and can be stored densely.

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 a pair of left and right side frames 1A, 1B, and these side frames 1.
It is constituted by a base frame 1C that connects the lower parts of A and 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 connected to the plate nuts 65A,
The main body frame 1 is fixed to the shelf frame 50 by screwing and tightening the main body frame 65B.

L-shaped guide portions 2A, 2B are formed on the opposing inner surfaces of the side frames 1A, 1B, and dovetail groove portions 4A, 2B on the upper portions allow the nut bodies 3A, 3B to slide.
4B is formed. Also, on one side frame 1A,
Attachment portions 5 and 6 are provided on the inner surface of the lower part, respectively.
A pair of upper and lower guide rails 7 and 8 are disposed in the longitudinal direction of the frame.

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 supports 9A, 9B are , bolts 10A, 1 passed through mounting holes 11A, 11B formed in the middle part.
By screwing 0B into the nut bodies 3A and 3B, it is fixed at the changed position.

One of the support frames 9A is case-shaped, and includes a base plate 12 having a lower end to be fitted into the guide portion 2A and a mounting hole 11A, and a front and rear part connected from the inner surface of the lower half of the base plate 12 toward the inner package. It is formed by a pair of cover plate parts 13 and a connecting plate part 14 provided between the lower ends of these cover plate parts 13, and above the mounting hole 11A of the base plate part 12 is a pair of upper and lower through holes 15a, 15b. is formed.

The other support frame 9B has a rectangular plate shape, and has locking grooves 16a 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.
16b is formed. Here, the locking groove 16a,
Distance L ₁ from the back of 16b to mounting hole 11B,
L ₂ is the mounting hole 11 in one support frame 9A.
Distance L ₁ , L ₂ from A to through holes 15a, 15b
It is made equal to

An idling roller 28 made of resin is rotatably provided between the support frames 9A, 9 via a roller shaft 27. In other words, the roller shaft 2 inserted so as to freely rotate relative to each other
The roller shaft 27 can be installed by inserting one end of 7 into either of the through holes 15a, 15b and dropping the other end into either of the locking grooves 16a, 16b from above. The idle roller 28 can freely rotate around it.

A support shaft 28 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 12,
The inner end of the support shaft 18 is fitted into the bearing hole 19 so that it can freely swing up and down. and the cover plate part 1
A resin L-shaped plate part 23 is inserted between the free ends of the L-shaped plate part 23, and the outer end of the support shaft 18 is fitted into the vertical recess 24 formed in the vertical plate of the L-shaped plate part 23. The vertical swing range of the support shaft 18 is regulated.

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 externally fitted and fixed to the boss portion of the sprocket 20, so that both 20 and 21 can freely rotate together. . The transmission roller 21 is made of urethane rubber, and its outer periphery can freely 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 transmission device 25, and this transmission device 25 connects to the idle roller 28 via the support frames 9A, 9B, etc.
A large number of them are arranged on the main body frame 1 in groups.

A chain 30, which is a common driving body interlocked with each sprocket 20, is stretched along the conveying path 33 between the driving sprocket 31 and the driven sprocket 32 via a guide sprocket 33, etc. 31 to motor 34
It is linked to.

By arranging the idle rollers 28 paired with the transmission device 25 at set pitches P on the main body frame 1 as described above, a horizontal conveyance path 38 is formed 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.

As described above, the conveyance path 38 consisting of the idle rollers 28 paired with the transmission device 25 is arranged so that six idle rollers 28 arranged in a predetermined arrangement form one group, and each A plurality of groups corresponding to each conveyed object 39, 8 in the embodiment
It is divided into groups A, B, C, D, E, F, G, and H, and the transmission device 25 can be freely connected and separated for each group. That is, in each group, the air cylinder device 17 is connected in series to the supply/discharge hose 4.
0, and these supply/discharge hoses 40 are configured to be selectively connectable to a common air supply hose 43 from an air supply device 42 via electromagnetic valves 41, respectively. 44 is a regulator, and 45 is a silencer. A photoelectronic switch 46, which is an example of a stock detector, is provided at the downstream end of each group A, B, C...H.

Here, the two groups adjacent in the transport direction 47 are connected to the photoelectronic switch 46 of the upstream group.
is detected and the photoelectronic switch 46 of the downstream group is not detected, the transmission devices 2 of both groups
5 are configured to be connected at the same time (the connection between the air supply hose 43 and the supply/discharge hose 40). When the photoelectronic switches 46 of both groups are in the detection operation or non-detection at the same time, the transmission device 2 of the same group
5 are configured to separate simultaneously (separate the air supply hose 43 and the supply/discharge hose 40). 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 transmission device 25 moves separately when the photoelectronic switch 46 detects the detection 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, since the transmission roller 21 is in contact with the lower part of the outer circumference of the idler roller 28, the group of idler rollers 28 is forcibly rotated, so that the pallet 37 can be conveyed on the conveyance path 38.

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 thus conveyed sequentially to the downstream side come into contact with the stopper 56, stop, and are stored in group A. This palette 37
When the photoelectronic switch 46 detects this, group A is separated. 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 is detected and moved, but since group A is also detected and moved, this group B will also be separated.

In such an operation, for example, as shown in FIG. 5, 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 Figure 7, the palette 37 of group B is
transport to. Then, since the photoelectronic switch 46 of group B becomes non-detecting, groups B and C
The pallets 37 of group C are connected and moved to convey pallets 37 of group C to group B as shown in FIG. By repeating this kind of action, Figures 9 to 1
As shown in FIG. 3, pallets 37 can be fed sequentially.

For example, when the photoelectronic switch 46 of group F is in a non-detecting state as shown in FIG. 11, the pallet 3 of group A is
7, sequential feeding is performed at two locations in the direction of the conveyance path 38, as shown in FIGS. 15 and 16. Sequential feeding of three or more locations is also performed in the same manner.

Effects of the Invention According to the present invention having the above-mentioned configuration, when a common drive body is operated to rotate the transmission rollers of all groups, there is a downstream group in which no object is present, and a group in which there is an object to be conveyed. When the upstream groups are adjacent to each other, the transmission rollers of both groups can be brought into contact with the lower outer periphery of the idling roller, and this allows the idling rollers of both groups to be driven to rotate at the same time, and the conveyed rollers of the upstream group are Objects can be transported to the downstream group, and thus objects can be transported sequentially on the transport path of each stage.

Due to this sequential feeding, when the conveyed object located in the downstream group is detected by the load detector and the load detector of the upstream group is not detected, the transmission roller of the downstream group moves around the outer circumference of the idle roller. It can be separated from the lower part, and the transported object can be stopped within the downstream group.

By repeating such operations, the objects to be transported can be sequentially sent one by one from the downstream end to the upstream side of each group on the horizontal transport path and stored densely.

As described above, according to the present invention, only the necessary objects to be transported can be forcibly moved within the shelf, and the movement can always be carried out smoothly and reliably (progressive feeding) regardless of variations in load or the material of the pallet. By being able to keep the moving speed constant, it is possible to carry out stable and efficient transportation without causing damage due to severe collisions or disturbances in the appearance of the package.

Furthermore, the driving body is common to multiple groups, and one load detection device is required for each group, and the connection/separation movement connects the transmission roller from below to the lower outer periphery of the idle roller. Since it is only necessary to move the device apart, the overall configuration and control can be simplified, and the entire device can be provided at low cost.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a front view, FIG. 3 is a partially cutaway front view of the main part, and FIG. 4 is a partially cutaway side view of the same part. Figure 5~
FIG. 16 is a schematic side view showing the state of use. 1... Body frame, 7, 8... Guide rail, 17... Cylinder device, 18... Support shaft, 20
... Sprocket, 21 ... Transmission roller, 25 ...
... Transmission device, 28 ... Idle roller, 30 ... Chain (driving body), 34 ... Motor, 37 ... Pallet, 38 ... Transport route, 39 ... Transported object, 41
... Solenoid valve, 46 ... Photoelectronic switch (stock detector), 47 ... Conveyance direction, 48 ... Control unit,
50...Shelf frame, 51...Front support, 52...Rear support, 56...Stopper, 60...Roller conveyor, A to H...Group.

Claims (1)

[Claims] 1 A transport path consisting of a large number of idling rollers is formed on the shelf frame in multiple stages above and below, with the transport direction being horizontal, and the idling rollers in each stage correspond to each object to be transported in the transport direction. A common driving body is arranged along the conveyance path, and a transmission device is provided between the driving body and the idler roller, and this transmission device is connected to a lower part of the outer periphery of the idler roller. Each group can be freely connected to and separated from the idler roller through a transmission roller that can freely come into contact with and separate from the roller, and one load detector is provided for each group. When the upstream group's inventory detector operates and the downstream group's inventory detector does not detect, the transmission is configured to connect and operate at the same time, and the most downstream group 1. A shelving facility using rollers, characterized in that a transmission device is configured to separate and move when a detected movement is detected.