JPH06564B2 - Shelf equipment using rollers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf facility using rollers which is used to store a load directly or through a pallet and to take out the load when necessary.

[0002]

2. Description of the Related Art Conventionally, as this type of shelving equipment, for example, a fluidized shelving apparatus found in Japanese Utility Model Laid-Open No. 61-191304 has been provided. In this fluidized shelf, roller groups are arranged in a plurality of upper and lower stages on a frame body, and in each stage, a flexible tube is arranged below a member supporting the roller groups, and the members are reciprocally moved in the longitudinal direction. There is a cylinder that allows it. According to the structure of the fluidized shelf, the fixed load receiving is performed while the pallet is sequentially moved intermittently by the combined operation of moving the roller group up and down by the expansion and contraction of the flexible tube and reciprocally moving the member in the length direction by the cylinder. It can be supported by a member.

However, according to this conventional structure, since a plurality of the pallets are moved intermittently at the same time, when the succeeding pallet is supplied at a distance from the preceding pallet, the succeeding pallet contacts the preceding pallet. All the pallets have to be moved up and down while the succeeding pallets have to be moved intermittently, and therefore a large lifting force is required to move the rollers up and down. Further, when the members are reciprocally moved in the longitudinal direction by the cylinder, the rollers frictionally idle with respect to the bottom surface of the pallet group that is preceding and stopped, so that the total frictional force becomes large and a large reciprocating movement occurs. Need power,
Furthermore, since reciprocating free-wheeling is repeated, the bottom of the pallet is damaged and the load cannot be handled directly.

Such a problem is caused by, for example, Japanese Patent Laid-Open No. 52-
The problem can be solved by incorporating the accumulation conveyor device shown in 51676 or the transfer control device shown in JP-A-55-119647 into the frame body.

That is, the former accumulation conveyor device has a carrier roller, a detection means for detecting the presence of a load on the carrier roller, and first and second switches. A unit is constituted by the control means for controlling the rotation stop,
The carrier rollers in this unit are arranged directly or continuously with a free roller interposed, and the control means in each unit are connected subordinately.

[0006] According to this accumulation conveyor device, when the conveyed article reaches the carrier roller, it is detected by the detection means, and a signal is sent to the control means.
The switch is turned on and the carrier roller is driven to rotate, and the goods to be conveyed are sent to the lower side. And the carrier is a carrier
Upon passing the roller, the first switch is turned off and the carrier roller stops rotating. At this time, the transported object inertially moves, reaches the next carrier roller, and is detected by the detection means, so that it is sent to the lower side in the same manner as described above. Further, in the storage state, the first switch is on, but the second switch is off, so that the carrier roller stops rotating.

In the latter conveyance control device, a plurality of roller groups are provided, a first material detector is provided so as to face the boundaries between the roller groups, and a second material detector is provided slightly upstream of each boundary. Further, the first material detector group is connected to the tracking device, and the second material detector group is connected to the control device.

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

[0009]

According to the above-mentioned conventional accumulation conveyor device, when the inertial movement of the conveyed article is small due to the weight of the conveyed article or the rotation speed of the carrier roller, the conveyed article is the next carrier.・ The rollers will not reach and the transported goods cannot be moved smoothly. Also, if the inertial movement of the transported object is large, it will collide strongly with the transported object that is ahead and stopped, and the impact will disturb the storage posture of the transported object group or place it when the transported object is a pallet. The posture of the load is disturbed.

Further, according to the above-mentioned conventional conveyance control device, since the roller group collective driving device and two detectors are required for each roller group, the whole becomes complicated and expensive, and tracking is also required. By adopting the device and the control device, the overall control becomes complicated.

The object of the present invention is to always reliably move a load without causing an unexpected collision, and
The purpose is to provide roller-equipped shelving equipment that can be tightly stored and control and control equipment can be simplified.

[0012]

In order to achieve the above object, in the shelf equipment using rollers according to the present invention, a shelf frame is provided with a conveying path composed of a large number of idle rollers, and the conveying direction is horizontal and a plurality of upper and lower stages are provided. And the idle rollers of each stage are divided into a plurality of groups corresponding to each load unit in the transport direction, and one load detector is provided for each group, and a common driving body is provided along the transport path. Is provided between the drive body and the idler roller, and a transmission device is provided which is connectable and separable by contact and separation of the transmitter with respect to the peripheral surface of the idler roller. Two groups that are connectable and separable with respect to the roller and that are adjacent in the transport direction have a transmission device when the load detection device in the upstream group detects and the load detector in the downstream group does not detect. Configure to connect at the same time Both most downstream group transmission is configured to separate dynamic when the load presence detector is tested dispatched.

[0013]

According to the structure of the present invention, in the conveying paths of the respective stages, by operating the common driving body, the transmission bodies of the transmission devices in all the groups can be operated. In this state, when the downstream group where there is no load and the presence detector is not detected is adjacent to the upstream group where there is a load and the presence detector is detected, the transmission devices of both groups are It operates to bring the transmission member into contact with the peripheral surface of the idler roller. As a result, the idle rollers of both groups are rotationally driven at the same time, and the load of the upstream side group is conveyed to the downstream side group. By such an operation, the load can be sequentially fed on the horizontal transport path.

By this sequential feeding, the downstream group in which the load was not present is buried and the load is detected by the load detector, and the load is not detected in the upstream group because the load is not detected in the upstream group. When this happens, the transmission body of this downstream side group is separated from the peripheral surface of the idler roller and stops driving, so that the load can be positioned within this downstream side group.

By repeating such operations, loads can be sequentially fed to each group from the downstream end to the upstream side of each group on the horizontal transport path and can be densely stored.

[0016]

An embodiment of the present invention will be described below with reference to the drawings. 50 is a shelf frame, a plurality of left and right front columns 51, a plurality of left and right rear columns 52, and a front cross member 53 that connects the front columns 51.
And the rear cross member 54 that connects the rear strut 52 and the front strut 51.
And front and rear members 55 and the like that connect the front and rear of the rear pillar 52. Roller conveyors 60 having a large number of idle rollers are arranged in a plurality of upper and lower stages in a horizontal direction in a plurality of left and right partition portions formed between the columns 51 and 52 of the shelf frame 50. To be done.

That is, the body frame 1 of the roller conveyor 60 includes a pair of left and right side frames 1A and 1B, and the side frames 1A and 1A.
It is configured by a base frame 1C that connects the lower portions of 1B. The base frame 1C has a plurality of pieces in the carrying direction, and the bolts 61A and 61B passed from below are attached to the side frames 1A and 1B.
Both side frames 1 by screwing and tightening plate nuts 63A, 63B fitted in dovetail grooves 62A, 62B formed on the lower surface of
It is connected between A and 1B. Further, dovetail groove portions 64A and 64B are formed at upper and lower two places (a plurality of places) on the outer side surfaces of the side frames 1A and 1B, and the plate nuts 65 are provided at these dovetail groove portions 64A and 64B.
A and 65B are inserted. Then, the main body frame 1 is fixed to the shelf frame 50 by screwing and tightening bolts 66A, 66B which are passed through the columns 51, 52 from the lateral direction to the plate nuts 65A, 65B.

L-shaped guide portions 2A and 2B are formed on the inner surfaces of the side frames 1A and 1B which face each other, and dovetail portions 4A and 4B which allow the nut bodies 3A and 3B to slide are formed on the upper portions thereof. ing. On one side frame 1A, a pair of upper and lower guide rails 7 and 8 are arranged in the frame length direction on the inner surface side of the lower part thereof via mounting portions 5 and 6, respectively.

On the inner surfaces of the side frames 1A, 1B, resin support frames 9A, 9B are provided so that their lower ends are fitted, and the positions thereof can be changed (slipped) in the frame length direction. , 9B are mounting holes 11A, 11 formed in the middle part.
The bolts 10A and 10B passed through B are the nut bodies 3A and 3B.
It is fixed in the changed position by being screwed into.

One of the support frames 9A has a case shape, and has a lower end to be fitted to the guide portion 2A and a base plate portion 12 having a mounting hole 11A, and a lower half inner surface of the base plate portion 12 directed inward. It is formed by a pair of front and rear cover plate portions 13 connected to each other and a connecting plate portion 14 provided between the lower ends of these cover plate portions 13, and a pair of upper and lower penetrating holes above the mounting holes 11A of the substrate portion 12. Holes 15a and 15b are formed.

The other support frame 9B has a rectangular plate shape, and is formed with locking grooves 16a, 16b whose upper and lower end surfaces in the height direction and inner side surfaces are open on both sides across a pair of mounting holes 11B. There is. Here, from the inside of the locking grooves 16a, 16b to the mounting holes
Distance L _1, L ₂ to 11B, the distance L ₁ from the mounting hole 11A of one of the support frame 9A to the through-holes 15a, 15b,
It is equal to L ₂ .

A resin idle roller 28 is rotatably provided between the support frames 9A and 9B via a roller shaft 27. That is, one end of the roller shaft 27 inserted through relative free rotation is inserted into one of the through holes 15a and 15b, and the other end is inserted into a locking groove.
The roller shaft 27 can be attached by dropping it into either 16a or 16b from above, and the idler roller 28 can freely rotate around the roller shaft center 29.

A support shaft 28 along a roller shaft center 29 is attached to one support frame 9A so as to be vertically swingable. That is, the bearing hole portion 19 is formed at the lower end of the base plate portion 12, and the inner end of the support shaft 18 is fitted into the bearing hole portion 19 so as to be vertically swingable. Then, an L-shaped plate portion 23 made of resin is inserted and mounted between the free ends of the cover plate portion 13, and the outer end of the support shaft 18 is placed in a vertical recess 24 formed in the vertical plate of the L-shaped plate portion 23. Mating and supporting shaft
The vertical swing range of 18 is restricted.

A sprocket 20, which is an example of a passive wheel, is rotatably attached to the support shaft 18.
A transmission roller 21, which is an example of a transmission body, is externally fitted and fixed to the boss portion of 20 so that the both 20 and 21 can rotate integrally. The transmission roller 21 is made of urethane rubber, and its outer periphery can be brought into contact with and separated from the lower outer periphery which is an example of the peripheral surface of the idler roller 28. And an air cylinder device that makes contact and separation
Reference numeral 17 is interposed between a cylinder rubber receiver 22 attached to the outer end of the support shaft 18 and a lateral plate of the L-shaped plate portion 23.

The above 17 to 24 constitute a unitary transmission device 25, and the transmission device 25 includes the support frame 9A,
A large number of them are arranged on the main body frame 1 as a set with the idler roller 28 via 9B or the like.

A chain 30, which is a common driving body interlocking with each sprocket 20, is stretched between the driving sprocket 31 and the driven sprocket 32 along the transfer path 38 via a guide sprocket 33, and the like. The drive sprocket 31 is linked to a motor 34.

By disposing the idler rollers 28 paired with the power transmission device 25 at the set pitch P on the main body frame 1 as described above, the idler rollers 28 make a horizontal conveyance path 38.
To form. 39 is a load, which is handled via the pallet 37. A stopper 56 fixed to the shelf frame 50 side is provided at the end of the transport path 38.

As described above, the conveying path 38 including the idler roller 28 paired with the transmission 25 is shown in FIG.
As shown in FIG. 6, a group of six idler rollers 28 arranged in a predetermined arrangement is used as a group, and a plurality of groups corresponding to each one load 39, in the embodiment, eight groups A, B, C, D, E, F,
It is divided into G and H, and the transmission 25 can be connected and separated freely for each group. That is, for each group, a supply / discharge hose 40 in which the air cylinder device 17 is connected in series is provided, and these supply / discharge hoses 40 are connected to a common supply hose 43 from the supply device 42 via the solenoid valves 41, respectively. Alternatively, it is configured to be freely connectable. 44 is a regulator and 45 is a silencer. At the downstream ends of the groups A, B, C, ...

In the two groups adjacent to each other in the conveying direction 47, when the optoelectronic switch 46 of the upstream group is detected and the optoelectronic switch 46 of the downstream group is not detected, the transmission devices 25 of both groups are simultaneously operated. It is configured to perform a connection operation (connection between the air supply hose 43 and the air supply / exhaust hose 40). When the optoelectronic switches 46 of both groups are simultaneously detected or not detected at the same time, the transmission devices of both groups 25
At the same time separates [the air supply hose 43 and the air supply / exhaust hose 40 are separated]. For this purpose, each solenoid valve 41 is incorporated in each control unit 48. Further, only the most downstream group A is configured so that the transmission device 25 is separated when its optoelectronic switch 46 is detected.

Next, the transfer work in the above embodiment will be described. 3 and 4, the solenoid valve 41 is switched to connect the air supply hose 43 to the air supply / exhaust 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 idle position. It is pressed against the roller 28 from below. At this time, the chain 30 is constantly driven by the motor 34, so that the sprocket 20 engaged with the chain 30 is rotating around the support shaft 18. Further, the transmission roller 21 is a free roller 28.
Since the idler rollers 28 are forcedly rotated by contacting the lower part of the outer periphery of the pallet 37, the pallet 37 can be transported on the transport path 38.

The roller conveyor 60 basically conveys the pallet (load 39) 37 as described above, but in reality, the conveyance control is performed based on the detection and 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 truck 68 while the transport path 38 is empty, the optoelectronic switch 46 of the group H
However, since the optoelectronic switch 46 of the group G 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. From group H to group G. When the pallet 37 enters the group G, the optoelectronic switch 46 of this group G detects and operates, but the group F
Then, since it is not detected, the groups G and F are connected and the pallet 37 is transported from the group G to the group F.

In this way, the pallets 37 that have been successively conveyed to the downstream side come into contact with the stoppers 56 and stop.
Will be stored at. When the photoelectronic switch 46 detects the pallet 37, the group A is separated. The second pallet 37 is also conveyed in the same manner, abuts on the pallet 37 of the group A and is stored in the group B. At this time, the group B is detected and moved, but since the group A is also detected and moved, the group B is also separated.

In this work, it is assumed that the pallets 37 are stored in all the groups A to H as shown in FIG. When the pallet 37 of the group A is taken out by the forklift truck 68 in this state as shown in FIG. 5B, the optoelectronic switch 46 of the group A becomes non-detected, and the groups A and B are connected. As shown in FIG. 5C, the pallet 37 of the group B is conveyed to the group A. Then, since the optoelectronic switch 46 of the group B becomes non-detected, the group B,
C is connected, and thus the pallet 37 of group C is conveyed to group B as shown in FIG. By repeating such actions, FIG. 5 (e), FIG. 6 (a)-
As shown in (c), the pallet 37 can be sequentially fed.

For example, when the photoelectronic switch 46 of the group F is in the non-detection state as shown in FIG. 6B and the pallet 37 of the group A is removed as shown in FIG. ) And (g), the sequential feeding is performed at two points in the direction of the transport path 38. In the same manner, sequential feeding of three or more places is also performed.

In the above embodiment, the idler roller is used as the transmission member.
Although the transmission roller 21 that can be brought into contact with and separated from the lower outer periphery of 28 is shown, this can be achieved by another means such as a tube body that can be brought into contact with and separated from the inner peripheral surface of the idler roller 28 by expansion and contraction. It may be.

[0036]

According to the present invention having the above-described structure, the common drive unit is operated and the transmission units of all the groups are operated, and the downstream group in which the load is not present and the load are present. When the upstream groups are adjacent to each other, the transmission bodies of both groups can be brought into contact with the peripheral surface of the idler rollers, whereby the idler rollers of both groups can be driven to rotate at the same time, and the load of the upstream group can be transferred to the downstream side. It can be transported to a group, so that the load can be transferred in sequence on each transport route.

By this sequential feeding, when the load detector located in the downstream group is detected by the load detector and the load detector in the upstream group is not detected, the transmission roller of the downstream group is set to the idle roller. The load can be stopped in the downstream side group because it can be separated from the peripheral surface.

By repeating such an operation, it is possible to sequentially feed each group to each group on the horizontal transport path from the downstream end to the upstream side and to densely store the loads.

As described above, according to the present invention, only the necessary load can be forcibly moved in the shelf, and smooth and reliable movement (progressive feed) can be always performed regardless of the variation of the load and the material of the pallet. In addition, since the moving speed can be made constant, it is possible to efficiently perform a stable movement that does not cause damage due to an extreme collision or disorder of the packaging. Further, since the drive unit is common and only one presence detection device is required for each group, the entire configuration and control can be simplified, and the whole can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a side view of a shelf facility using rollers according to an embodiment of the present invention.

FIG. 2 is a front view of a main part of shelf equipment using the roller.

FIG. 3 is a partially cutaway front view of the roller conveyor section.

FIG. 4 is a partially cutaway side view of the roller conveyor section.

5 (a) to (e) are schematic side views showing a usage state.

6 (a) to 6 (g) are schematic side views showing a usage state.

[Explanation of symbols]

 1 Main frame 7 Guide rail 8 Guide rail 17 Cylinder device 18 Spindle 20 Sprocket 21 Transmission roller (transmission body) 25 Transmission device 28 Idler roller 30 Chain (driving body) 34 Motor 37 Pallet 38 Conveyance path 39 Conveyed object 41 Electromagnetic Valve 46 Photoelectric switch (in-vehicle detector) 47 Conveyance direction 48 Control unit 50 Shelf frame 51 Front column 52 Rear column 56 Stopper 60 Roller conveyor A to H group

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A 61-238603 (JP, A) JP-A 52-51676 (JP, A) JP-B-4-889 (JP, B2) JP-A 58- 135024 (JP, A) JP 47-44780 (JP, A) Jpn. 2-37776 (JP, Y2) JP 62-88709 (JP, A) Jikkai 1-96404 (JP, U)

Claims (1)

[Claims] 1. A shelf frame is provided with a plurality of idling rollers having a conveying path formed in a plurality of upper and lower stages with the conveying direction being horizontal, and the idling rollers of each stage are arranged in the conveying direction for each load unit. In addition to dividing into a plurality of groups, one in-load detector is provided for each group, a common driving body is arranged along the transport path, and a free roller is provided between the driving body and the free roller. A transmission device is provided which is connectable and separable by contact and separation of the transmission body with respect to the peripheral surface of, and these transmission devices are connectable and separable with respect to the idler roller for each group, and two groups adjacent in the transport direction are When the load detecting device of the upstream side group detects and the load detecting device of the downstream group does not detect, the transmission devices are configured to be connected simultaneously, and the most downstream group is the load detecting device. Is transmitted when is detected Shelf equipment using rollers, characterized in that the device is configured to move separately.