JPH0644886Y2 - Multi-stage transfer device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a transfer device that stacks items to be stored in a storage rack on a table and moves up and down along the storage rack.

2. Related Art and Problems Thereof Conventionally, as a transfer device of this type, there is one shown in FIGS. 12 to 17.

First, the transfer device 20 shown in FIG. 12 and FIG. 13 is provided with a table 22 having only one step, and with a pillar 23 along the storage shelf 21 as a guide, for each step of the shelves 25 of the storage shelf 22. In addition, the stored goods W are loaded and unloaded one by one by reciprocating up and down between the loading and unloading conveyor 24 and the storage shelves 21.

Secondly, the transfer device 26 shown in FIGS.
In Japanese Patent Laid-Open No. 140203), four tables 28 are rotatably provided around a column 27.

Third, the transfer device 30 shown in FIG. 16 and FIG.
It is a longer version of 31.

These transfer devices 26, 27 are adapted to receive a plurality of stored items W at one time.

In addition, although not shown, the transfer device described in Japanese Utility Model Laid-Open No. 58-30606 has two tables (transfer conveyors).

However, any of the above transfer devices moves up and down for each storage item with respect to the storage shelf 21, and therefore has to move along the entire height of the storage shelf 21, which requires a long time to move up and down. There is.

In addition, the pillars 23 become long and the cost increases,
There was also a problem that the ceiling had to be raised.

Means for Solving the Problems The present invention is directed to transfer of stored items having a plurality of transfer tables arranged between a loading / unloading conveyor and a storage shelf having a plurality of shelves and moved up and down along the storage shelves. In the device, the table has a half shelf number of the storage shelves at the same intervals as the storage shelves, and each table simultaneously carries in each of the storage shelves, The above-mentioned problems are solved by a multi-stage transfer device which has a stored item conveying mechanism that can be simultaneously carried out, and has the transfer table side end of the loading / unloading conveyor located at substantially the center position of the storage shelf height. It is a thing.

Action The loading operation of the stored items is performed as follows.

First, the multi-stage transfer device is moved up and down, stopped at a height at which the storage conveyor and the table of an arbitrary stage coincide with each other, and the stored items are sent from the storage conveyor and loaded on the table. Next, the multi-stage transfer device is moved up and down by one stage, and the upper table or the lower table of the table is placed at the same height as that of the warehousing conveyor and the stored items are loaded on the new table.

In this way, the multistage transfer device is sequentially moved up and down, and the stored items are loaded on all the tables.

After that, the multi-stage transfer device is moved up and down to the height of the shelf desired to be stored, and the stored items are simultaneously sent to and stored in the corresponding shelves in a state where each table and each shelf are aligned. This allows
The delivery of the stored items is completed.

On the other hand, the operation of carrying out the stored items is as follows.

First, the empty multistage transfer device is moved up and down to the height of the desired shelf of the stored items, the respective tables of the storage shelves are aligned with each other, and the stored items on the storage shelves are simultaneously sent to the respective tables.

Then, the multistage transfer device is moved up and down while aligning each table with the delivery conveyor, and the stored items are carried out onto the delivery conveyor.

As a result, the carrying out of the stored items is completed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a side view and a front view showing a part of a loading / unloading facility 41 having a transfer device 40 of the present invention, and FIG. 3 is a plan view of the transfer device 40.

The transfer device 40 guides a pillar 44 adjacent to the front surface (left side in FIG. 2) of a rotary shelf 43 having a plurality of shelves 42, and a pillar 44.
It is moved up and down by a lifting drive motor 45 provided in the lower part of the. The transfer device 40 is a table 46 for transferring the stored items W.
Has a plurality of stages in the vertical direction. The plurality of tables 46 are integrated by a pipe 47 having a pair of cross sections parallel to the support columns 44 and having a rectangular shape with appropriate intervals. Horizontal beams 48 are provided in parallel between the pair of pipes 47 so as to connect the pipes 47. Each horizontal beam 48 is provided with a bracket 50 having two rollers 49. The bracket 50 is located inside the column 44 through an opening 44a formed along the longitudinal direction of the column 44. The roller 49 has two U-shaped cross-section roller guides formed at the four corners of the pillar 44 in parallel with the longitudinal direction of the pillar.
It is guided by two roller guides 51. A roller 54 provided on a weight balancer 53 is guided to the other two roller guides 52 which are not engaged with the roller 49 among the roller guides formed on the column 44. The bracket 50 and the weight balancer 53 are provided at both ends of a belt (not shown) whose folding points are pulleys (not shown) provided inside the head of the column 44.

Therefore, the transfer device 40 can smoothly move the support column 44 up and down by using the roller 49 and the roller guide 51 as guides and by the weight balance of the weight balancer 53.

Next, the table 46 will be described.

On the table 46, there are a transport mechanism 60 for transporting the stacked stored items W on the table 46 in the left-right direction in FIG. 3, and a pusher mechanism 61 for pushing the transported items W from the table 46 to the shelf 42 of the rotary shelf 43. It is prepared.

Next, the transport mechanism 60 will be described.

A transport motor 62 is horizontally provided on the side surface of the table near the pipe 47. Right side of table 46 (right side in FIG. 3)
A drive shaft 63 supported by a bearing 68 is rotatably provided at a position along the. The drive shaft 63 is rotated by the carry motor 62 by a sprocket 64 provided on the output shaft 69 of the carry motor 62, a sprocket 65 provided on the drive shaft 63, and a chain 66 spanning the two sprockets 64, 65. It is like this. The drive shaft 63 is provided with a plurality of drive rockets 67 at appropriate intervals. At a position along the left side of the table 46, a driven sprocket 71 provided on a shaft 70 is provided so as to face the drive sprocket 67 and to be freely rotatable. A transport chain 72 is stretched between the drive sprocket 67 and the driven sprocket 71. The transport chain 72 is for carrying the stored items W by, for example, a micro chain and transporting the loaded items W in the left-right direction in FIG. 3, and a support plate provided at the bottom of the table 46 so that the middle does not bend. 73 (FIG. 4) and a support plate 74 located above this bottom part, and so as not to meander during circulation movement,
A linear circulation movement is ensured by a meandering prevention plate 75 provided on the support plates 73 and 74.

Next, the operation of the transport mechanism 60 will be described.

When the carry motor 62 is driven, the rotational force is changed to the sprocket 64,
It is transmitted to the drive shaft 63 through the chain 66 and the sprocket 65, and the transport chain 72 is circulated by the cooperative rotation of the drive sprocket 67 and the driven sprocket 71.

When the stored items W are stacked on the transport chain 72, the stored items W move in a direction according to the circulating movement direction of the transport chain 72.

Next, the pusher mechanism 61 will be described.

A pusher motor 80 is horizontally provided near the pipe 47 of the table 46. A drive pulley 82 is provided on the output shaft 81 of the pusher motor 80. Below the drive pulley 82 (see FIG. 6), a pulley is attached to a horizontal rotary shaft 83 that intersects with the output shaft 81.
84 is rotatably provided. Further, the table 46 is provided with four pulleys 85 that rotate horizontally. An endless wire 86 is wound around the drive pulley 82, the pulleys 84, 84 and the four pulleys 85. A rail 90 is laid in the center of the table 46 along the longitudinal direction. This rail 90
A linear motion bearing 91 is movably provided on the upper part (FIG. 7). A slider 92 is integrally mounted on the linear motion bearing 91. Slider 92
In FIG. 3, a U-shaped pusher 93 is provided by a shaft 94 so that the U-shaped opening is the center of rotation. axis
A spring 95 is provided at 94 to bias the tip of pusher 93 (on the right side in FIG. 3) in a direction away from the table 46 side. The winding start and winding end of the spring 95 are engaged with the slider 92 and the pusher 93, respectively. A roller 96 is provided at each of the U-shaped open ends of the pusher 93. At the position on the left side of the table 46, there is provided a pusher tilting member 97 that causes the roller 96 to tilt the tip of the push-up pusher 93 toward the table 46. On the side surface of the slider 92, a connecting pin 98 for connecting to the wire 86 is projected.

Next, the operation of the pusher mechanism 61 will be described.

When the pusher motor 80 is driven with the pusher 93 in the left position in FIG. 3, the drive pulley 82 causes the wire 86 to circulate with the pulleys 84 and 85 as guides. With this circular movement, the slider 92 is pulled and the linear motion bearing
Start moving to the right with 91 and rail 90 as a guide.
By the start of this movement, the pusher tilting member 97 pushes up the side having the roller 96 until now, and the pusher 93 is biased by the pusher tilting member 97 toward the table 46, and the spring 95 moves as the roller 96 moves away from the pusher tilting member 97. Rises away from the table 46 by the urging force of. In this raised state, the pusher 93 moves to the imaginary line position at the right end and automatically stops. In order to move the pusher 93 from the right end position to the left end position, the pusher motor 80 is reversely rotated and the wire 86 is cyclically moved in the reverse direction to be pulled to the original position at the left end. When the pusher 93 moves to the left end position, the roller 96 rides on the pusher tilting member 97, and the tip of the pusher 93 tilts toward the table 46.

In the above operation, the pusher 93 rises up while moving from the left end position to the right end position, as will be described in the overall operation described later. This is because it is pushed into.

A plurality of sensors 99 arranged along the side surface of the table 46 opposite to the support column 44 controls each of the transport mechanism 60 and the pusher mechanism 61 and the mutual operation relationship between the transport mechanism 60 and the pusher mechanism 61. Is. Also, enter the height of the center of the rotating shelf 43,
Delivery conveyors 55 and 56 (Fig. 2) are provided.

Next, the overall operation will be described.

First, the operation of loading the stored item W from the storage conveyor 55 to the rotary shelf 43 will be described.

Assume that all tables are to be loaded into storage.

First, the transfer device 40 is moved along the support column 44 so that the bottom table 46a matches the height of the storage conveyor 55.
Then, the pusher 93 is stopped at the left end position in FIG. 3, the transport motor 62 is driven to cyclically move the transport chain 72, and the table 46 is kept in the waiting state.

Then, the storage conveyor 55 pushes the stored items W onto the table 46a so as to push them out. The stored items W that have been folded are dragged by the transport chain 72 so that the table is
It is loaded on 46a.

In this way, the stored items W are placed on the table 46a at the bottom stage.
After the loading is completed, in order to load the stored items W on the table 46b on the upper stage thereof, the entire transfer device 40 is lowered by one stage and the table 46b is adjusted to a height corresponding to the height of the receiving conveyor 55. Stop. After that, the stored items W are loaded by the same operation as the loaded items W are loaded on the table 46a.

In this way, the stored items W are successively loaded on the upper tables 46c and 46d.

Transfer device 44 in which stored items W are loaded on all the tables 46
Suppose that the storage object W is stored in the lower shelf 42 of the rotary shelf 43, it descends to the lower end of the support column 44, and the height positions of the respective racks 42 of the rotary shelf 43 and the respective tables 46 are the same. Stop at.

After that, the transport motors 62 of the table 46 are driven to start feeding the stored items W onto the shelves 42 of the rotary shelves by the transport chain 72. When the stored item W on the table 46 moves to some extent, the passage position of the stored item W is detected by the sensor 99a provided on the side surface of the table, and the pusher motor 80 starts to rotate.
Then, the wire 86 causes the slider 92 to follow the stored item W, and starts moving rightward in FIG. Slider
When the pusher 93 moves to a certain extent, the tip of the pusher 93 rises and pushes the rear part of the stored item W that has been sent to the shelf 42 of the rotary shelf 43 by the transport chain 72 to some extent, and then the stored item W is rotated 43.
Push it in completely. After that, the pusher 93 is the receiving conveyor.
It returns to the left end of the table 46, which is the position on the 55 side, and enters the standby state for the next operation. In this way, the storage items W are carried into the rotary shelf 43 for each table 46 all at once.

Next, the operation of carrying out the stored item W from the rotary shelf 43 to the delivery conveyor 56 will be described.

First, the transfer device 40 is moved up and down to the position of the shelf 42 in which the items W are stored, and the heights of the shelves 42 and the tables 46 are matched. Then, the transport chain 72 on the table 46 is circulated and moved to the standby state. Next, the storage W on the shelf 42
Is pushed onto the table 46 by pushing a pusher (not shown) provided on the rotary shelf. The pushed-out stored item W is drawn onto the table 46 by the transfer chain 72 and the transfer device 40.
Can be loaded on. This operation is performed by rotating the transport chains 72 provided on the respective tables 46 of the transfer device 40 at the same time so that all the tables 46 of the transfer device 40 are rotated.
Items can be loaded at the same time.

In this way, the transfer device 40, in which the stored items W are loaded on the respective tables 46, stops the tables 46 at a height corresponding to the height of the delivery conveyor 56, and rotationally drives the transport chain 72 to transfer the stored items W to the delivery conveyor 56. Move it as if sending it out. Since there is only one delivery conveyor 56, each table 46 is sequentially stopped at the location of the delivery conveyor 56 and the stored items W are delivered to the delivery conveyor 56.
Carry out to the top.

According to the above embodiment, as shown in FIG. 9 to FIG.
When the transfer device 40 receives the first, second, and third stored items W sent by the storage conveyor 55 at the uppermost position, and
Move down one step and receive items 4, 5 and 6. In this way, the first to twelfth items are received, and one step is lowered to put the first to twelfth items in the shelf 42 at the same time. Next, it goes up one step and receives the stored items of Nos. 13, 14 and 15, and when the 24th item is received in the same manner, the Nos. 13 to 24 are put in the shelf 42 at the same time. The unloading operation is the reverse of the above. As a result, the first-in, first-out operation is completed.

Therefore, the transfer device 40 has four times the rack pitch (that is, the rotary rack 42).
While reciprocating with a stroke of 1/2) of height, the stored goods W are received from the storage conveyor 55 and stored on the shelf, and the stroke amount is half, and the wasteful ascending / descending step pitch Stay only for 1st step (1st step down after receiving 10-12th and 1st to receive 13th-15th after lower receiving
Processing time is reduced because it is only a step rise.

That is, in the relationship between the rotary shelf and the transfer device 40, since a plurality of stages can be transferred at the same time, it is possible to exhibit a processing capacity which is twice as high as that of the conventional single-stage transfer device. Furthermore, since the transfer device elevating stroke of the distance excluding the heights of the transfer device 40 from the height of the rotary shelf 43 is sufficient, the column for lifting and lowering the height of the rotary shelf + α is unnecessary, and the elevator column rotates. It can be installed in a place where the ceiling does not come out of the head of the shelf 43 and the ceiling is low. In addition, since the lifting stroke is short, the cost is low.

Also, since the loading / unloading conveyors 55 and 56 are located at the center of the height of the rotary shelf, the lifting / lowering operation of the transfer device 40 is the shortest during continuous loading / unloading work, and energy loss is small. Processing capacity can also be increased.

Furthermore, since the micro chain is used for the table 46 of the transfer device 40, the thickness of the table 46 can be reduced, and the number of corresponding rotary shelves 43 can be increased and the number of storages can be increased.

In the above embodiment, the shelves of the transfer device 40 and the rotary shelves 43 are equidistant, but the shelving intervals of the transfer device 40 may match the shelves of the corresponding rotary shelves 40. However, it is not always necessary that the intervals be equal.

Further, although the transfer device is fixed to the floor and the shelf for storing the stored items is rotated, the transfer device may be moved on the floor to fix the shelf to the floor.

Further, as the transport chain 72, a thin belt may be used instead of the micro chain.

Effect of the Invention As described above, the multi-stage transfer device of the present invention has a plurality of stages and is installed at a table having a number of stages that is half the number of shelves of the storage shelves and approximately at the center position of the height of the storage shelves. Since it has a conveyor for loading and unloading, (1) After sending the stored items to the upper half or the lower half of the shelf,
The empty multi-stage transfer device descends or rises while receiving stored items from the storage conveyor, and automatically faces the lower half or upper half of the rest of the shelves, so there is no unnecessary movement, and the loading operation of stored items is not necessary. It can be performed efficiently and in a short time, and the items stored on each shelf of the transfer table can be transferred to the corresponding shelves of the storage shelf at the same time. It will improve.

(2) Further, since it is possible to simultaneously transfer the stored items on each shelf of the storage shelf to each shelf of the corresponding transfer table, the transfer operation can be performed very efficiently in a short time. In addition, the carry-out work for carrying out the stored items to the carry-out conveyor can be performed efficiently and in a short time as in the carry-in work.

(3) When the table is opposed to the storage shelf at the upper end position and the lower end position, the table can be opposed to the storage shelf without excess or deficiency of the table.

(4) The pillar can be shortened, and the cost can be reduced.

(5) There is an effect that the ceiling can be lowered.

[Brief description of drawings]

1 to 11 are views of an embodiment of the present invention, FIG. 1 is a side view of a loading / unloading facility, FIG. 2 is a front view of FIG. 1, FIG. 3 is a plan view of a transfer device, FIG. 4 is a partial cross-sectional view taken along arrow 4-4 in FIG. 3, and FIG. 5 is a schematic view showing only the transport chain in the view taken along arrow 5-5 in FIG. Is the third
Fig. 6-6 is a schematic view showing only the wire relationship in the arrow view, Fig. 7 is a view showing only the pusher relationship in the 7-7 arrow view in Fig. 3, and Fig. 8 is 9 in Fig. 3. Fig. 9 is a view showing only the pusher relation in the direction of the arrow, Figs. 9 to 11 are operation diagrams, Figs. 12 to 17 are views of a conventional example, and Fig. 12 is a plan view of the first conventional example. FIG. 13, FIG. 13 is a side view of FIG. 12, FIG. 14 is a plan view of a second conventional example, FIG. 15 is a side view of FIG. 14, and FIG. 16 is a plan view of a third conventional example. FIG. 17 is a side view of FIG. W …… Stored items 40 …… Multi-stage transfer device 42 …… Shelves 43 …… Storage shelves (rotary shelves) 44 …… Posts 46 …… Table 55 …… Incoming conveyor 56 …… Outgoing conveyor

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuya Ominami, Inventor Kazuya Ominami, 4-18-88, Tsurumi, Tsurumi-ku, Osaka, Osaka (72) Inside Tsubakimoto Chain Co., Ltd. (72) Toshihisa Tetsumoto 4 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Chome 17-88, Tsubakimoto Chain Co., Ltd. (72) Creator Shinya Suehiro 4-17-88, Tsurumi Tsurumi-ku, Osaka-shi, Osaka Prefecture (56) Tsubakimoto Chain Co., Ltd. (56) Reference JP-A-49-124781 (JP, A) ) Actually open 62-20204 (JP, U) Actually open 58-60602 (JP, U)

Claims (1)

[Scope of utility model registration request] 1. A storage object transfer device having a transfer table of a plurality of stages arranged between a loading / unloading conveyor and a storage shelf having a plurality of shelves, the transfer table having a plurality of transfer tables that move up and down along the storage shelf. A storage item transport mechanism that has half the number of shelves of the storage shelves at the same intervals as the shelves of the storage shelves, and that each table can simultaneously carry in and out of each shelf of the storage shelves. And a transfer table side end portion of the loading / unloading conveyor is arranged at a substantially central position of the storage shelf height.