JPH08268555A - Work carrying-in/carrying-out method and pallet using in its method - Google Patents

Abstract

PURPOSE: To prevent a loaded work from falling by vibration. CONSTITUTION: An empty inner pallet 55 is raised from inside an outer pallet 51 by a lifter 33, and is projected upward, and a loaded work W is transferred onto the empty inner pallet 55, and the inner pallet 55 is housed in the outer pallet 51, and the work W is carried in. The inner pallet 55 on which the work W is loaded is raised from inside the outer pallet 51, and when the uppermost work W is projected above the outer pallet 51, the work W is carried out one by one. Except when the work W is carried in and carried out, since the inner pallet 55 on which the work W is loaded is housed in the outer pallet 51, even if vibration is caused, the loaded work does not fall.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a work loading / unloading method and method for loading a work loaded on a pallet and adsorbing the loaded work on the pallet one by one from above. For pallets used in.

[0002]

2. Description of the Related Art A conventional storage rack 101 for storing a pallet P loaded with works W has a frame 103 as shown in FIG. 6, and the frame 103 has four standing frames. Installed side frame 105
A, 105B, 105C, 105D and the upper frame 10 on the upper surface of each side frame 105A to 105D.
5E is connected. Moreover, the side frame 105
A plurality of shelves 107 are provided between A and 105B and the side frames 105C and 105D at appropriate intervals in the vertical direction.

At the bottom, a loader frame 109 extending rightward in FIG. 6 is provided. Each of the shelves 1
07, a pallet P loaded with works W is stored on the loader frame 109. In addition, pallet P
A hook F is provided on the left side of the.

An elevator 111 that can move up and down is provided on the left side of the side frames 105A and 105B in FIG. Hook 1 on this elevator 111
A self-propelled traverser 115 provided with 13 is provided so as to be movable in the left-right direction in FIG. Since a moving mechanism for moving the traverser 115 in the left-right direction in FIG. 6 is already known, detailed description thereof will be omitted.

Sprockets 117 and 119 are rotatably provided on the upper and lower portions of the side frames 105A and 105B, respectively.
A chain 121 is wound around 7 and the sprocket 119. Both ends of the chain 121 are the elevator 11
1 is attached to the rear part. A drive motor 125 is provided on the upper frame 105E via a motor bracket 123, and a drive sprocket 127 is rotatably attached to the output shaft of the drive motor 125. A chain 131 is wound around the drive sprocket 127 and the sprocket 129 supported by the shaft on which the sprocket 117 is mounted.

When the drive motor 125 is driven by the above structure, the sprocket 129 is rotated via the output shaft, the drive sprocket 127, and the chain 131. The rotation of the sprocket 129 causes the sprocket 117 to rotate.
Is rotated. The rotation of the sprocket 117 causes the elevator 111 attached to the chain 121 to move up and down.

Below the loader frame 109 between the side frames 105A and 105B and the side frames 105C and 105D, a vertically movable lifter 133 is provided.
And a loader 13 that is movable in the left-right direction in FIG. 6 at the bottom of the rotor frame 109.
5 are provided. The loader 135 is provided with a vertically movable suction frame 137.
A plurality of suction pads 139 is provided on the device 37.

With the above structure, the hooks F of the pallets P stored on the shelves 107 and the loader frame 109 are provided.
Is a traverser 115 provided on the elevator 111 that moves up and down the side surfaces of the side frames 105A and 105B.
Of the elevator 1 from each shelf 107 by engaging the hooks 113 of
The pallet P is transferred to 11 and the elevator 111 is lowered to the lowest stage.

At the lowermost position, the pallet P on the elevator 111 is carried onto the lifter 133 by the traverser 115. One work W loaded on the pallet P carried on the lifter 133 is picked up by the suction pad 139, and the loader 135 is transferred to the loader frame 109 to a processing machine such as a turret punch press or a laser processing machine (not shown). Along this, it is moved to the right in FIG. 6 and conveyed.

The pallet P is prevented from moving and falling while being stored in the storage shelf 101, and the elevator 1
The structure is as shown in FIGS. 7 and 8 so that it can be easily moved when it is carried up. That is, as shown in FIG. 7 and FIG.
A stopper block 141 is provided at a side end on the traverser 115 side in the transport direction of, and wheels 143 are provided at different widths at opposite ends. A stopper block 145 is also provided on each of the shelves 107 and the loader frame 109 outside the stopper block 141.

When the pallet P is conveyed, as shown in FIG. 9, when the hook 113 of the traverser 115 is engaged with the hook F of the pallet P and the elevator 111 is slightly raised, the end of the pallet P is moved by a small amount. The stopper block 141, which is floated and provided on the bottom surface of the pallet P, passes over the stopper block 145 provided on each shelf 107 and the loader frame 109.

[0012]

By the way, as described above, since no locking means is provided between the pallet P and the work W (load) loaded on the pallet P, for example, an earthquake occurs. Due to the vibration at the time, the loaded work W (load) may drop from the pallet P,
It is a danger.

An object of the present invention is to provide a work loading / unloading method and a pallet for use in the loading / unloading method in which the loaded work is prevented from falling due to vibration.

[0014]

In order to achieve the above object, a method of loading and unloading a work according to the present invention according to claim 1 is arranged in an outer pallet having an opening on the upper surface and a hole formed substantially at the center of the bottom surface. When loading and unloading workpieces into the stored inner pallet, lift the lifter from the hole formed on the bottom surface of the outer pallet to lift the inner pallet above the opening of the outer pallet, and then load the loaded work. Alternatively, it is characterized in that the works loaded on the inner pallet are adsorbed one by one by a one-piece picking device and carried out.

According to a second aspect of the pallet of the present invention, an outer pallet having an opening on the upper surface thereof, a hole formed at substantially the center of the bottom surface, and side walls provided on four sides surrounding the bottom surface, and an inner pallet in the outer pallet. An inner pallet which is housed on the bottom surface of the outer pallet and is capable of moving vertically, and a moving / stopping unit which is provided below the outer pallet to move and stop the outer pallet. Is.

In the pallet of the present invention according to claim 3, the moving / stopping means is provided with a stopper block at one of the front and rear ends of the lower portion in the traveling direction of the outer pallet, and a pair of wheels at the other end with different widths. It is characterized by.

[0017]

With the work loading / unloading method according to the first aspect of the present invention as described above, when loading a work loaded on the inner pallet, the lifter lifts the empty inner pallet to lift the outer pallet. The work loaded on the inner pallet is carried in by projecting upward. The inner pallet is then stored in the outer pallet.
When carrying out the works one by one from the work stacked on the inner pallet, the work is carried out one by one by lifting the inner pallet by the lifter and projecting the works stacked above the outer pallet.

Except for loading and unloading the work, the loaded work is on the inner pallet, and since the inner pallet is stored in the outer pallet, it will not drop even if vibration occurs.

Further, according to the pallet of the present invention according to claims 2 and 3, the inner pallet is stored in the outer pallet, and the work loaded on the inner pallet and the inner pallet are stored only when the work is carried in and out. Only project above the outer pallet, so that the loaded work does not drop even if vibration occurs.

[0020]

Embodiments of the present invention will be described in detail with reference to the drawings.

Referring to FIG. 1, a storage rack 1 for storing a pallet P loaded with works W is provided with a frame 3 which is framed, and the frame 3 includes four side frames 5A and 5B provided upright. , 5C, 5D and an upper frame 5E is coupled to the upper surfaces of the side frames 5A to 5D. Moreover, between the side frames 5A, 5B and the side frames 5C, 5D, a plurality of shelves 7 are provided at appropriate intervals in the vertical direction.

A loader frame 9 extending rightward in FIG. 1 is provided at the lowermost stage. On each of the shelves 7 and the loader frame 9, pallets P loaded with works W are stored.

A vertically movable elevator 11 is provided on the left side of the side frames 5A and 5B in FIG. A self-propelled traverser 15 having a hook 13 is provided on the elevator 11 so as to be movable in the left-right direction in FIG. Since the moving mechanism of the traverser 15 is already known, detailed description thereof will be omitted.

Sprockets 17 and 19 are rotatably provided on the upper and lower portions of the side frames 5A and 5B, respectively, and a chain 21 is wound around the sprocket 17 and the sprocket 19. This chain 2
Both ends of 1 are attached to the rear part of the elevator 11. A drive motor 25 is provided on the upper frame 5E via a motor bracket 23, and a drive sprocket 27 is rotatably attached to the output shaft of the drive motor 25. The drive sprocket 27 and the sprocket 2 mounted on the shaft of the sprocket 17
A chain 31 is wound around 9.

When the drive motor 25 is driven by the above structure, the output shaft, the drive sprocket 27, and the chain 31 are driven.
The sprocket 29 is rotated via. Since the sprocket 17 is rotated by the rotation of the sprocket 29, the elevator 11 attached to the chain 21 is vertically moved.

A vertically movable lifter 33 is provided below the loader frame 9 between the side frames 5A and 5B and the side frames 5C and 5D, and the lower part of the loader frame 9 is shown in FIG. A loader 35 movable in the left-right direction is provided. The loader 35 is provided with a vertically movable suction frame 37, and the suction frame 37 is provided with a plurality of suction pads 39.

The side frames 5A, 5B and 5
Inside the lower part of C and 5D, the elevator 11
A pallet support member 41 for supporting the pallet P loaded with the works W is integrated by the traverser 15 provided above.

When the elevator 11 is positioned at the lowermost position in FIG. 1, the elevator 11
A lifter 43 that can be moved up and down is provided below, and a hole 45 that penetrates in the up-down direction is formed at approximately the center of the elevator 11. Further, a forklift 47 carrying the pallet P loaded with the works W is moved to a standby position on the left side of the elevator 11 in FIG. 1 positioned at the lowermost position.

The pallet P is shown in FIG. 3, FIG. 4 and FIG.
As shown in FIG. 3, a box-shaped outer pallet 51 having an opening 49 on the upper surface is provided.
A hole 53 for allowing the lifter 33 to project upward is formed in the central portion of the bottom surface of the. Outer pallet 5
Flat inner pallet 5 with work W loaded on the bottom of 1
5 can be stored.

A hook 57 that engages with the hook 13 provided on the traverser 15 is provided on the left side of the outer pallet 51 in FIGS. Also, the outer pallet 51 is moved to the lower surface on one side where the hook 57 is provided.
A stopper block 59 as a stopping means is provided, and wheels 61 are provided on the other side.

With the above structure, when replenishing a new work W, as shown in FIG. 1, the pallet P in which the empty inner pallet 55 is housed in the outer turret 51 is placed on the elevator 11, and the elevator 11 is mounted. Lower to the bottom. Next, when the lifter 41 is actuated, the lifter 41 passes through the holes 45 formed in the outer pallet 51, and the inner pallet 55 is lifted up to the side surface height of the outer pallet 51 or more. In this state, for example, the works W loaded on the forklift 47 are transferred and replenished on the inner pallet 55. After replenishing, when the lifter 43 is contracted, the inner pallet 5
5 is placed and stored on the bottom surface of the outer pallet 51.

The elevator 11 is raised and an appropriate shelf 7 is provided.
After stopping at the position, the traverser 15 is operated, the hooks 13 and 57 are engaged, and the pallet P is moved and stored on the shelf 7. By repeating this process, the pallets P are stored on the plurality of shelves 7.

The elevator 11 is moved up and down to stop the elevator 11 at a predetermined position on the shelf 7. Move the traverser 15 to the shelf 7 side, and hook 1
3 and the hook 57 of the pallet P are engaged. By moving the traverser 15 to the side opposite to the shelf 7, the pallet P is transferred onto the elevator 11. Lower the elevator 11 to the lowest position.

At the lowermost position, the traverser 15
When the storage rack 1 side is moved, the pallet P moves on the pallet support member 41 and is stopped in the state shown in FIG. When the hook 13 is removed from the hook 57, the wheel 61 and the stopper block 59 allow the outer pallet 5 to move.
1 is positioned and fixed to the pallet support member 41.

When the lifter 33 is raised, the lifter 33 passes through the holes 53 formed in the bottom surface of the outer pallet 51, and the inner pallet 5
The upper surface of the work W stacked on the sheet 7 is projected from the opening 49. In this state, the suction frame 37 is lowered to suck the uppermost work W by the suction pad 39, and the suction frame 37 is raised to pick up one work W. By moving the loader 35 to the right along the loader frame 9 in FIG. 2, the work W is carried out to a plate material processing machine (not shown) such as a turret punch press or a laser processing material.

In this way, the work W is placed inside the outer pallet 51.
The inner pallet 55 on which the loaded W is loaded is stored, and when the work W is loaded and unloaded, the inner pallet 55 is raised with respect to the outer pallet 51. Even if it shifts in the direction, it is stopped by the side wall of the outer pallet 55, and there is no fear of dropping, and the work W can be easily carried in and out.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes.

[0038]

As will be understood from the above-described embodiments, according to the work loading / unloading method of the present invention according to claim 1, when loading the work loaded on the inner pallet, the work is carried out by the lifter. The work loaded on the inner pallet is carried in by lifting the inner pallet and projecting it above the outer pallet, and then the inner pallet is stored in the outer pallet by lowering the lifter. When carrying out one by one from the work stacked on the inner pallet, the lifter lifts the inner pallet to project the work stacked above the outer pallet so that the works are carried out one by one. Therefore, the work can be easily loaded and unloaded. Moreover, since the loaded work is on the inner pallet and the inner pallet is stored in the outer pallet except for loading and unloading the work, it does not drop even if vibration occurs.

According to the pallet of the present invention according to claims 2 and 3, the inner pallet is housed in the outer pallet, and the work loaded on the inner pallet and the inner pallet are stored only when the work is carried in and out. Since it only projects above the outer pallet, the loaded work does not drop even if vibration occurs.

[Brief description of drawings]

FIG. 1 is a front view of a storage shelf for storing a pallet of the present invention.

FIG. 2 is an enlarged view of a portion indicated by an arrow II in FIG.

FIG. 3 is a plan view of a pallet showing an embodiment of the present invention.

FIG. 4 is a front view of FIG.

FIG. 5 is a side view of FIG.

FIG. 6 is a front view of a storage shelf for storing a conventional pallet.

FIG. 7 is a front view showing a conventional pallet.

FIG. 8 is a plan view of FIG.

FIG. 9 is an operation explanatory view when the hook of the traverser and the hook of the pallet are engaged with each other.

[Explanation of symbols]

 1 Storage Shelf 3 Frame 7 Support Frame 9 Loader Frame 11 Elevator 13 Hook 15 Traverser 33 Lifter 35 Loader 39 Adsorption Pad 41 Pallet Support Member 43 Lifter 45 Hole 49 Opening 51 Outer Pallet 53 Hole 55 Inner Pallet 57 Hook 59 Stopper Block 61 Wheel

Claims (3)

[Claims] 1. When a work is carried in and out from an inner pallet housed in an outer pallet having an opening on the upper surface and a hole formed in the approximate center of the bottom surface, the lifter is moved through the hole formed on the bottom surface of the outer pallet. To load the work loaded with the inner pallet raised above the opening of the outer pallet, or to pick up the work from the work loaded on the inner pallet one by one by the picking device and carry it out. A method of loading and unloading a work, characterized by: 2. An outer pallet having an opening on the upper surface and having a hole formed substantially at the center of the bottom surface and provided with side walls on all four sides surrounding the bottom surface, and a work stored in the bottom surface inside the outer pallet and A pallet comprising: an inner pallet capable of moving up and down and a moving / stopping unit provided below the outer pallet for moving and stopping the outer pallet. 3. The moving / stopping means is provided with a stopper block at one of the front and rear ends of the lower portion in the traveling direction of the outer pallet, and a pair of wheels having different widths at the other end. The listed palette.