JPH02276724A - Transport device equipped with accommodating shelf - Google Patents

Abstract

PURPOSE:To efficiently carry-in/out a pallet by constituting the subject device from the pallets superposed vertically in pairs, accommodating shelves for accommodating each pallet, separating mechanism, carrying-in/out mechanisms and a control part. CONSTITUTION:A pallet 20 is constituted of the upper and lower stages and accommodates the worked members before working and the worked members after working at the same time, and transported into an accommodating shelf 1 by a transport mechanism 10, and can be separated by a separating mechanism 13, and during the time when one pallet is held, the other pallet is carried out by a carrying-out mechanism 15. Therefore, in order to carry out the delivery of the worked piece onto the pallet 20 or the accommodation of the worked articles, the separating mechanism 13 and carrying-in/out mechanisms 10 and 15 are operated at the same time, in interlocking, and the time for the transport processing is shortened. Further, the installation space for the pallet to be accommodated and stored on an accommodating shelf 1 is reduced to the min.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention includes a storage shelf for storing articles, and a loading/unloading mechanism for conveying articles between the storage shelf and a processing machine via a pallet. Regarding a conveyance device.

[Prior Art] In recent years, in the processing of metal plates and the like, there are automatic lines that carry out the process from carrying in and processing to carrying out the products.

Work materials as articles and processed materials after processing are stocked on storage shelves, and by providing a pallet that can be freely taken out for each shelf, the articles stored on the pallets can be transported via the conveyance mechanism without falling. It can be transported between the storage section and the processing machine.

If the storage shelves can accommodate both workpieces and processed materials, it will save space, and workers will only have to place them in the storage area where these items are brought in and taken out, increasing work efficiency. can be improved.

[Problems to be Solved by the Invention] However, in the storage shelf configured as described above, it is necessary to transport each pallet between the storage section and the processing machine each time an article is loaded or unloaded, and this operation is difficult. It took a lot of time, and it was not possible to improve the production efficiency of the automatic line.

That is, when automating the conveyance of the pallets, it is necessary to minimize the loss time caused by idle pallets during loading and reverse operations, but this has not been done.

The present invention has been made in view of the above-mentioned circumstances, and allows articles to be stored in a space-saving manner using a storage shelf, and enables efficient loading and unloading of pallets on which articles are stored between the storage shelf and a processing machine. It is an object of the present invention to provide a conveying device equipped with a storage shelf that can be easily used.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides: pallets that are configured to be stacked in pairs on top and bottom and each store an article; a storage shelf that stores a plurality of the pallets on each shelf; a separation mechanism provided in a part of the storage shelf to separate the stacked pallets and temporarily hold one of the pallets; a carry-in mechanism to transport the pallets between the storage shelf and the separation mechanism; and the separation mechanism. an unloading mechanism that transports a pallet between the mechanism and a processing machine outside the device; and an unloading mechanism that interlocks the separating mechanism, loading mechanism, and unloading mechanism to take workpieces out of the pallet or store workpieces in the pallet. It is characterized by comprising: a control section for controlling;

[Function] According to the above configuration, the pallet is composed of two stages, upper and lower, which can simultaneously accommodate workpieces and workpieces that are in different states, and can be separated by the separation mechanism, and one of the pallets is held. Since the other pallet can be carried out while the other pallet is in use, the carrying-in mechanism and the carrying-out mechanism can be operated simultaneously and separately, and the time required for the carrying process can be shortened.

Furthermore, since the pallets are stored in storage shelves, the installation space for storage can be minimized.

[Example] First, the exploded perspective view of FIG. 2 shows a pallet 20 that stores articles PL and P2.

The pallet 20 is composed of a lower pallet 21 that stores the workpiece P2 before processing, and an upper pallet 25 that stores the workpiece PL after processing the workpiece P2.
A pair of frame plates 22 are erected at a predetermined distance from the left and right ends, respectively, and support the upper pallet 25.

Further, a protrusion 22a is provided on the upper part of the frame plate 22, and an engagement hole 25a is provided in the upper pallet 25 at a position corresponding to the protrusion 22a, so that the upper pallet 25 and the lower pallet 21 are engaged at a predetermined position. It is configured to be fixed together. The lower pallet 21 and the upper pallet 25 each have articles P2. A protruding piece 21a is provided to prevent the PL from falling off.

25b is erected.

Furthermore, as shown in FIG. 3, the upper pallet 21 is provided with a lock lever 26 that is rotatable about a central axis 26a and is always biased in the direction shown in the figure. The portion 26b can be freely engaged with a roller 23 provided on the upper part of the side plate 22 of the lower pallet 21, and the locking lever 26 and roller 23 constitute a locking mechanism, which functions to further firmly fix and maintain the above-mentioned engaged state. have. Incidentally, even when the lock lever 26 is in a free state, it does not rotate in the direction beyond the position shown in FIG. 3(a).

FIG. 1(a) is a plan view showing an embodiment of a conveying device equipped with a storage shelf of the present invention, and FIG.
-I line sectional view.

The storage shelf l shown in FIG. 1(a) is roughly composed of five shelf boards 3 provided at predetermined intervals in the vertical direction of the support 2, and a frame 4, and the shelf numbers 1 and 1 are sequentially arranged starting from the upper shelf 3. ~5 is assigned.

Further, the shelf boards 3 are arranged with a dimension that is less than or equal to the width of the lower pallet 21.

In the wound part of the shelf board 3, side parts 6a formed in a U-shape or phthalo are located, and the lifter 6 is moved by the rails 7 and guide rollers 8 provided on the storage shelf 1 and the side parts 6a of the lifter 6, respectively. It is movable in the vertical direction. This lifter 6 is
The driving source is a pair of left and right hydraulic cylinders 9 for lifting and lowering the lid.

The lifter 6 is provided with a traverser IO as a carrying mechanism that is movable in the B and B' force directions, and this traverser 10 is
A transmission system 12 consisting of a traverser loading/unloading electric motor ll, a belt, gears, etc., moves the pallet 2 to the shelf board 3.
At the base of the support column 2, there is provided a temporary storage shelf 13 as a separation mechanism, which is arranged with a frontage equal to the width of the upper pallet 25 and has a horizontal locking piece 13b. , the upper pallet 25 is supported between the storage shelves 13.13. As shown in FIG. 3, each hour storage shelf 13 is provided with a lock release hydraulic cylinder 13a as a release mechanism for rotating the lock levers 6 in six directions to release the locked state.

Furthermore, at the bottom of the storage shelf l, there is a trolley 1 as an unloading mechanism.
5 is provided. The trolley 15 has a structure in which a pulley 16a provided at a base 16 is movable on a rail 17, and the rail 17 extends to a position where it is carried out to a processing machine (not shown). Therefore, the pallet 20 is transferred between the cart 15 and the traverser IO. This truck 15 moves using a hydraulic cylinder 18 for loading and unloading the truck as a driving source. Furthermore, the cart 15 is provided with an elevating section 19 on the base 16 that can be raised and lowered in the vertical direction by a hydraulic cylinder 19a for lifting and lowering the cart, and the pallet 20 is raised and lowered.

The traverser 10 then transports the pallet 20 between the shelf board 3 and the truck 15.

Next, FIG. 4 is a block diagram showing a control system for the storage shelf l.

The control unit 32 controls each pump drive electric motor 30 of the storage shelf l.
．． It is provided electrically connected to the hydraulic solenoids 18a, 19b, 9a, and 13c in the signal system and power system. In addition, the control unit 32 communicates with a production information processing device 35, which may be an externally provided personal computer or a combination of more than 10 units, such as "material preparation command", "material delivery information", and "material delivery information". An interface 32a is provided that can manually output various information commands such as "Completion command", "Material storage bin command", and "Material plate thickness, length and width dimension information", and each actuator is automatically controlled by the above information commands, and the designated pallet is 20 is taken out from the storage shelf l to a specified position and then put into the storage shelf l.

In addition, the control unit 32 is provided with an interface 32b that allows human output of the "carry-in preparation signal", "carry-out preparation signal", "carry-in completion signal", and "carry-out completion signal" between the material-requiring machines (processing machines) and the upper pallet. 25. Automatically control the preparation of the lower pallet 21.

It also has an interlock function to safely check whether the operations based on the above information and signals are operating normally.

The control unit 32 issues operation commands (operations to be described later) to each hydraulic solenoid according to a predetermined procedure, and various commands for this operation are inputted from the operation unit 33 and displayed on the display terminal 34. It looks like this.

Next, the operation of the above configuration will be explained based on the operation diagrams of FIGS. 5(a) to (i) and 6(a) to (d), and the operation flowchart of FIG. 7.

In the following, a case will be described in which an operation command to the operation unit 3 or a control command from the production information processing device 35 causes the workpiece P2 of the lower pallet 21 accommodated in shelf number 3 to be carried out. Further, the drive system is omitted in FIGS. 5 and 6.

The production information processing device 35 then processes all types of workpieces P.
Information on the shelf number where No. 2 is stored is stored in a storage section (not shown).

First, when an operation command is generated, a command for the number of pieces to be machined for the workpiece P2 is output (SPI), and continuous machining is set until the specified number of pieces is reached (SF22).
A material preparation command is issued to the control unit 32 (SF3).

Next, the information on the shelf number 3 in which the desired workpiece P2 is stored is obtained by the material shelf number command (SF3), and the material plate thickness, length and width dimension information, which is information such as the dimensions of this workpiece P2, is obtained. (SF3), and after confirming inventory information etc.
), the traverser entry/exit electric motor 11 is driven to move the traverser lO in the B direction.

Next, as shown in the same figure (b), the hydraulic cylinder 9 for lifting and lowering the lifter is
to raise the lifter 6 to near the height of the shelf bin 3 (to be exact, to a position slightly below the shelf board 3 of the shelf bin 3), and move the traverser 10 in the B′ force direction by the electric motor 11 for traverser entry/exit (SF3 ).

In this state, the traverser 10 is located below the pallet 20, so the lifter 6 is moved by the hydraulic cylinder 9 for lifting and lowering the lifter.
By raising the pallet 20, the pallet 20 is separated from the shelf board 3 and placed on the traverser 10, as shown in FIG.

Then, by moving the traverser 10 in the B direction, the pallet 20 is pulled out from the shelf board 3 portion as shown in FIG. 3(d) (SF3).

Next, as shown in FIG. 6(e), the lifter 6 is lowered by the hydraulic cylinder 9 for lifting and lowering the lifter. At this time, upper pallet 2
5 lowers it to the center position of the temporary storage shelf 13 (SF7
).

By moving the traverser 10 in the B' direction as shown in FIG. 3(f), the upper pallet 25 enters the temporary storage shelf 13 portion as shown in FIG. 3(a) (SF8).

Therefore, as the lifter 6 descends, the
), only the upper pallet 25 is locked and held by the temporary storage shelf 13, and the lower pallet 21 is placed on the cart 15 (the state shown in FIG. 3(b)).

At this time, as shown in FIG. 3(c), the lock release hydraulic cylinder 13a is activated, and the lock lever 26 is rotated in six directions to release the engagement between the upper pallet 25 and the lower pallet 21. The upper pallet 2 is lowered by the lowering of the trolley 15.
The engagement state between the engagement hole 25a of No. 5 and the protrusion 22a of the lower pallet 21 is released (SF9).

Next, as shown in FIG. 5(h), after the lower pallet 21 is placed on the trolley 15, the traverser 10 moves in the B direction.

Thereafter, as shown in FIG. 3(L), the trolley 15 is moved to the transport position on the rails 17 by the hydraulic cylinder 18 for entering and exiting the trolley (SPIO). As a result, the workpiece P2 stored in the lower bullet 21 becomes ready to be transported to the turret punch press machine for the next process (SPII).

Next, in FIGS. 6(a) to 6(d), a case will be described in which the workpiece P2 is carried into the upper pallet 25 of shelf number 3 as the workpiece PL after being processed.

First, after the workpiece P2 is conveyed in the state shown in FIG. 6(a), the trolley 15 with the lower pallet 21 Ha is re-entered (SPI2), resulting in the state shown in FIG. 6(b). .

Then, as shown in FIG. 6(C), the lifting section 19 of the truck 15 is raised by the operation of the truck lifting hydraulic cylinder 19a. As a result, the lower pallet 21 is stacked on the upper pallet 25, and the protrusion 22a engages with the engagement hole 25a, so that the stacked state of the upper pallet 25 and the lower pallet 21 is maintained in position. Further, the stacked state is further ensured by the lock lever 26 and roller 23 (SPI3). The operation diagram until this stacking is illustrated as the states shown in FIGS. 3(c) to 3(a).

After being stacked in this manner, the elevating section 19 is raised until the second upper pallet 25 is separated from the temporary storage shelf 13 (the state shown in FIG. 3(a)).

After that, as shown in FIG. 6(d), the cart 15 is moved out of the warehouse again on the rails 17 to the transport position (SF14), so that the processed workpiece PL can be carried onto the upper pallet 25 ( SF15).

Through the series of operations shown in FIG. 5 described above, the workpiece P2 stored in the lower pallet 21 can be taken out to the transport position, and the workpiece P1 can be stored into the upper pallet 25 through the series of operations shown in FIG. can.

After that, the pallet 20 is stored by the trolley 15 (SF
16) A one-piece completion signal, which is a signal indicating that one piece of workpiece P2 has been processed, is output to the production information processing device 35. Here, the production information processing device 35 determines whether or not the desired number of sheets to be processed has been reached (5P22), and determines whether or not the same pallet 20 is to be continuously carried out, and if it is the same pallet 20. Then, the upper and lower pallets are separated by the temporary storage shelf 13 again (transition to SF9).

On the other hand, when the desired number of sheets has been processed, the traverser IO is used to store the pallet 20 again in the shelf number 3 section.
performs the reverse operation of the above operation (moves to SP18 to SP21). In this case, the state of FIG. 6(d) is shown in FIG.
It is desirable to move to the state of (a), when - time storage shelf 1
The temporary storage state of the upper pallet 25 in three parts (Fig. 5 (h)
), (i), and the sixth (a) to (c) states) can be omitted.

Furthermore, in SF31, it is determined whether or not to process a different type of material to the workpiece P2, and if this is not necessary, the entire operation is ended. On the other hand, when performing this, the process moves to SF3 again, and after obtaining various information regarding another workpiece P2, the same operations as described above are continuously processed.

In this way, the pallets 20 are separated into upper and lower parts by the temporary storage shelf 13, which is a separating mechanism, so when performing continuous processing on the same pallet 20, SP6 to
Traverser 1, which was previously required due to the operation of 5P13
It is possible to omit the transportation between the shelf part and the trolley by the zero, and high-speed processing becomes possible.

[Effect of the Invention J According to the conveying device equipped with a storage shelf of the present invention, the pallets are stored in the storage shelf, so the installation space for storage can be minimized, and the pallet unit is made up of two pallets. Therefore, when the articles stored in the pallet are put in and taken out from the warehouse, articles in different states can be stored at the same time within the pallet unit simply by separating them using the separating mechanism.

Furthermore, since the storage shelf has a plurality of shelves only in the vertical direction, and the separation mechanism is provided in a part of the storage shelf, the loading mechanism and the unloading mechanism that transport the pallet containing articles are It has the effect of making the operation of the entire device more efficient.

[Brief explanation of drawings]

FIG. 1(a) is a plan view showing a conveyance device equipped with a storage shelf of the present invention, FIG. 1(b) is a sectional view taken along line I-1 in FIG. 1(a), and FIG. 2 is a pallet An exploded perspective view showing Figure 3 (a
), (b), and (c) are operation diagrams seen from the front showing the separated state of the pallet, Figure 4 is a block diagram showing the control system, and Figures 5@(a) to 5(i) are , a diagram of the operation until the goods stored in the lower pallet are unloaded, Fig. 6(a) ~
(d) is an operation diagram up to the storage of articles on the upper pallet, and FIG. 7 is a flowchart showing the operation procedure of the above apparatus. l...Storage shelf, 3...Shelf board, 6...Lifter. lO... Carrying mechanism, 13... Separation mechanism, 15...
Unloading mechanism, 20...Pallet, 21...Lower pallet, 23...Roller, 25...Upper pallet, 26...
Lock lever 132...control unit. Patent Applicant Norihiro Nishimura Agent/Patent Attorney Anri Co., Ltd. Figure (a) Figure (c) Figure 5 (b) Figure (d) Figure (e) Figure 5 (9) Figure ( f) District (h) Figure (a) Figure 6) Figure 6 (b) Figure (d) Procedural amendment (voluntary dated May 31, 1999)

Claims (1)

[Scope of Claims] A pair of pallets stacked one above the other for storing articles, a storage shelf for storing a plurality of pallets on each shelf, and a storage shelf provided in a part of the storage shelf to store the stacked pallets. a separation mechanism that separates the pallets and temporarily holds one of the pallets; a carry-in mechanism that transports the pallets between the storage shelf and the separation mechanism; and a transfer mechanism that transports the pallets between the separation mechanism and a processing machine outside the device. It is characterized by comprising: an unloading mechanism for transporting; and a control unit that controls the separating mechanism, the loading mechanism, and the unloading mechanism in conjunction with each other in order to take the workpieces out of the pallet or store the workpieces in the pallet. A transport device equipped with storage shelves.