JPH07228498A - Fork-lift handling method for drum can and fork-lift device for drum can - Google Patents

Abstract

PURPOSE:To improve the storage efficiency of drum cans aligned on a storage shelf storing the drum cans by holding the upper face sections of the drum cans with a fork-lift, extracting them from the storage shelf, and temporarily putting multiple extracted drum cans on a temporary rack. CONSTITUTION:The upper face sections of drum cans 1 are vacuum-sucked by the vacuum suction pad main body 51 of a fork-lift device 30, the inside of bellows 53 is brought to a negative pressure, and the sucked drum cans 1 are lifted slightly upward. These drum cans 1 are extracted from a storage shelf 2 in the lifted state, and the multiple extracted drum cans 1 are aligned on a temporary rack 34 in two lines for temporary storage. The gaps between the drum cans 1 can be minimized.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum can forklift handling method and a drum can forklift device, and more particularly to a drum can forklift handling method capable of highly efficiently transporting and transferring a drum can from a storage shelf to a truck. And a forklift device for drums.

[0002]

2. Description of the Related Art Conventionally, a handling method has been widely used in which drums are used as transport containers and storage containers for various liquids, which are handled by forklifts and transported by trucks.

As a conventional forklift truck, the actual forklift 6
No. 2-157794, etc. In this forklift cargo handling device, in order to solve the problem that the forward visibility is obstructed by the forklift cylinder 5 as shown in FIG. 9, as shown in FIG. A cylinder 14b and a lower cylinder 14a are provided.

Drums are generally large, usually about 0.7 to 1 meter in diameter, capable of containing a volume of about 200 liters of solution, and have an overall weight of about 200 kilograms. In addition, most of the forklifts used for loading on trucks are used in the industrial world, and their transportation capacity is often about 1 ton class.

From these relationships, as a high-performance drum can handling method, four drum cans (weight: about 800) can be used.
It is extremely rational to simultaneously convey (about 1000 kilograms) by a forklift, and it is required to establish a handling method suitable for this handling.

[0006] Usually, four drums are often loaded and stored on a pallet (not shown) for storage and handling. However, various types of solutions are put into individual drums and handled. Often, it is also necessary to reasonably handle these individual drums.

However, conventionally, in the actual drum can handling operation, the drum cans are taken out one by one from a storage rack by a forklift with a can gripping mechanism, transported as they are, and transferred to a truck or the like.
It is the actual situation that the processing capacity is not completely satisfied with the above-mentioned demand.

A conventional drum can handling method will be outlined with reference to FIGS. 21 to 25. FIG. 21 is a plan view of one stage portion of the storage shelf 2 in which the drum cans 1 are aligned one by one and placed and stored in multiple stages.
The forklift 4 with a can gripping mechanism travels in the passage 3 between them to handle the drum can 1.

This forklift 4 with a can gripping mechanism is
The forklift main body 5, the claw unit 6, and the wheel 7 are provided. The side surface of the drum can 1 is clamped by the claw unit 6, moved to the outside of the passage 3, and transferred to the truck 8 or the like.

However, the forklift 4 with a can gripping mechanism needs to handle the drums 1 one by one to reciprocate between the truck 8 and the storage rack 2, which is a problem in that the efficiency of the drum cans is low. .

Further, due to the structural limitation of the pawl unit 6 that it is necessary to insert the pawl unit 6 between the drum cans 1 to be aligned and stored in the storage shelf 2 and hold the drum can 1, the pawl unit 6 is restricted. If the width of 6 is L1 and the allowance of the gap between the drum can 1 and the claw unit 6 is L2, then at least (L1 + L2) as the necessary interval between the drums 1 (the allowance ΔL of the drum 1). ) There is a problem that the above-mentioned interval is required and an extra storage space is required accordingly.

Further, even if the width W of the passage 3 required for steering the forklift 4 with a can gripping mechanism is set to the drum can when the forklift 4 with a can gripping mechanism needs to swivel in the passage 3 when handling the drum can 1. There is the problem of requiring a little more than three times the diameter of one (about 3 meters).

These problems are common even if there are some differences depending on the type of the conventional forklift 4 with a can gripping mechanism. For example, in the case of the most general counter-type forklift 10 schematically shown in FIG. 22, a counterweight 11 is provided at the rear of the forklift main body 5, and a fork is lifted by a lifting cylinder 14 via a chain 12 and a pulley 13. 15 can be moved up and down along the mast 16.

In the forklift 10, since the fork 15 or the pawl unit 6 itself mounted in place of the fork 15 cannot swivel in the horizontal plane, the forklift 1 is held when the drum 1 is gripped.
Since it is necessary to turn the entire 0, the width W of the passage 3 required for steering is the maximum. The forklift 10 handles the drum can 1 with the drum can 1 placed on a pallet. An inclining cylinder 17 for inclining the mast 16 by a predetermined angle is provided.

FIG. 23 is a perspective view of a reach fork type forklift 20. In the forklift 20, the fork 15 moves up and down along the mast 16, and the fork 15 is attached to the guide rod 21 before and after the forklift body 5. It is possible to reciprocate along.

Therefore, the fork 15 has a higher degree of freedom than the counter type forklift 10 of FIG. 21, but as with the case of the forklift 10, it is necessary to turn the forklift 20 as a whole, so that the passage 3 required for steering is The width W is required to some extent.

FIG. 24 is a perspective view of a reach fork type forklift 22 which is a modification of the reach fork type forklift 20. In the reach fork type forklift 22, the fork 15 can move up and down along the mast 16. In addition to being reciprocally movable back and forth along the guide rod 21, it is also possible to revolve around a revolving shaft 23.

Therefore, although the degree of freedom is greater than that of the forklifts 10 and 20, there is a problem in that the margin allowance ΔL of the drum can 1 needs to be provided like the other forklifts 10 and 20. .

FIG. 25 is a perspective view of a turning type forklift 24. In this forklift 24,
As a mechanism equivalent to the claw unit 6, ± 90 in the horizontal plane
And a fork lift unit 26 attached to the turning mount 25 and a drum can gripping arm 27 attached to the fork lift unit 26 so as to be vertically movable. There is.

According to the turning type forklift 24, since the forklift main body 5 itself does not need to operate within ± 90 degrees to the left and right, only by moving the forklift 24 into the passage 3, the storage rack It is only necessary to make the width W of the passage 2 of 2 slightly wider than that of the forklift main body 5, so that the storage efficiency of the storage shelf 2 as a whole can be improved.
It can be improved from 0 and 22.

However, since the drum can gripping arm 27 is used, it is necessary to provide the margin allowance ΔL of the drum can 1 like the other forklifts 4 with a can gripping mechanism, and it is difficult to further improve the efficiency. There is.

Therefore, it is difficult to improve the storage efficiency and the handling efficiency of the storage rack 2 by any of the conventional forklifts 4, 10, 20, 22, 24.

[0023]

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is possible to increase the effective storage area of a shelf for storing drum cans and to improve the handling efficiency of the drum cans. An object of the present invention is to provide a forklift handling method for a drum and a forklift device for a drum can.

Further, the present invention theoretically enables the gap between the drums to be extremely small,
An object of the present invention is to provide a forklift handling method for a drum can and a forklift device for a drum can, which can improve the storage efficiency of the items that are arranged on the storage rack for storing the drums on the storage rack or boxes close to the drum can. .

The width of the storage shelf passage of the forklift is set to a width corresponding to the width of at least about two drums,
Temporarily place at least a plurality of drums or about four drums taken out from the left and right storage shelves on the temporary stand.
Forklift handling for drum cans, where picking is performed so that the forklift's carrying capacity is about 1 ton, and a large number of boxes (four drums) are mounted on the forklift at one time, transported to a truck, and transferred. It is an object to provide a method and a forklift device for a drum can.

[0026]

That is, the present invention focuses on grasping the top surface or the upper circumferential portion of the drum can, and the first invention is from a storage shelf for storing the drum can. A forklift handling method for a drum can that takes out a drum can by a forklift, wherein the upper surface of the drum can is gripped by the forklift to take it out from the storage shelf, and the plurality of taken out drum cans are placed on a temporary placement stand. This is a forklift handling method for drums, which is characterized by temporary temporary placement.

A second aspect of the present invention is a forklift handling method for drum cans characterized in that the two drums are simultaneously transferred from the above-mentioned temporary mount to the loading platform of the truck by gripping the upper surfaces of the two drums. .

A third aspect of the present invention further comprises transferring the two drums on the loading platform of the truck, sliding the drums to the other end of the loading platform, and aligning the drums. It is a characteristic forklift handling method for drums.

A fourth invention is a forklift device for a drum can that takes out the drum can from a storage shelf for storing the drum can. The forklift device is provided in the forklift body of the forklift device, and is lifted and lowered along the lifting mast mechanism. A drum can top surface gripping mechanism having a gripping member that is capable of lifting the drum can by gripping the top surface of the drum can, and a grip that shifts the drum can top surface gripping mechanism in the horizontal direction and the front-rear direction in a horizontal plane. For a drum can, comprising: a mechanism shift mechanism; and a temporary placement stand that is located below the drum can upper surface gripping mechanism and at the front end of the forklift body and that can temporarily place at least a plurality of the drum cans. It is a forklift device.

A fifth invention is a forklift main body of the forklift device, and a drum can upper surface gripping mechanism having a pair of gripping members for gripping the upper surfaces of the drums from the storage rack and taking them out one by one.
And a temporary placing stand on which the plurality of drums taken out by the drum can upper surface holding mechanism can be temporarily temporarily placed, and the plurality of drums taken out from the storage shelf by the drum can upper surface holding mechanism can be temporarily placed. The forklift device for a drum can is characterized in that the drum can is temporarily placed on the temporary placement rack, and two drums are simultaneously transferred from the temporary placement rack to the loading platform of the truck by the pair of gripping members.

In a sixth aspect of the present invention, the forklift main body of the forklift device holds the at least one of the top surface and the upper circumferential portion of the drum can from the storage shelf and takes them out one by one and in the left-right direction. And a drum can upper surface gripping mechanism having a gripping member movable in the front-rear direction, a drum can pusher capable of pushing the side surface of the drum can, and a plurality of the drum cans temporarily taken out by the drum can top surface gripping mechanism. A temporary placing stand that can be temporarily placed is provided, and a plurality of drums taken out from the storage shelf are temporarily held on the temporary placing stand by holding the drum can by the holding member of the drum can upper surface holding mechanism. Temporarily put in
The gripping member transfers the drum cans from the temporary mount to the loading platform of the truck, and on the loading platform of the truck, the drum cans are transferred, and then the drum cans are pushed by the drum can pusher to the other end side of the loading platform. It is a forklift device for a drum can, characterized in that the drum cans are slid on and the drum cans are aligned.

The gripping member may be a vacuum suction pad capable of sucking the top surface of the drum can or an upper circumferential engaging member capable of engaging the upper circumferential portion of the drum can. .

The gripping member can be finely moved up and down while gripping the upper surface of the drum can.

Further, the gripping member may be provided with an engaging guide portion for guiding the gripping member so as to engage with the upper surface of the drum can.

Furthermore, in the forklift handling method for a drum can and the forklift device for a drum can according to the present invention, the upper surface portion of the drum can is the top surface of the drum can or the upper circumferential portion of the drum can.

Further, in the drum can forklift handling method and the drum can forklift device according to the present invention, the temporary placing stand can temporarily put four drum cans temporarily.

Further, in the drum can forklift handling method and the drum can forklift device according to the present invention, the drum cans can be temporarily placed in two rows on the temporary placing rack.

[0038]

In the forklift handling method for a drum can and the forklift device for a drum can according to the present invention, since the drum can is lifted by the upper surface holding mechanism of the drum can, that is, the upper surface of the drum can, that is, the top surface or the upper circumferential portion around the storage, the storage is performed. Since the space between the drums arranged in the storage rack can be minimized, the storage efficiency of the drums in the storage rack can be improved.

Since the drum can upper surface gripping mechanism itself is shifted in the front-rear direction and the left-right direction,
Since it is not necessary to turn the entire forklift truck and simply enter the passage in the storage rack, the width of the passage itself can be set to the minimum width that the forklift can pass through.

Therefore, the spacing between the drums,
Also, the width of the passage can be minimized, and the storage efficiency of the drums in the storage shelf can be improved.

Furthermore, a total of four drum cans (maximum six), such as two drums on the left and right and two rows on the front and rear, are placed on the temporary placement stand.
Since it is possible to transfer from the storage shelf to the truck after temporarily storing the paper, it is possible to improve the transfer efficiency compared to the conventional case where only one is transferred at a time, and if a pair of gripping members is used, two drums can be stored. The books can be transferred to the truck at the same time, and the drum cans can be efficiently handled and placed on the truck by an operation of pushing the books onto the bed of the truck with a drum can pusher.

According to the first and fourth aspects of the invention, since the upper surface of the drum can is gripped, the storage efficiency can be improved by reducing the storage space.

According to the second and fifth aspects of the invention, since two drums can be handled at the same time, the handling ability can be improved.

Furthermore, according to the third and sixth aspects of the invention, since the drums transferred from the forklift can be aligned on the bed of the truck, the transfer capability can be improved.

[0045]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A drum can forklift device 30 according to a first embodiment of the present invention will now be described with reference to FIGS. 1 to 17 together with a drum can forklift handling method. However, the same parts as those in FIGS. 21 to 25 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows a forklift device 3 for drums.
0 is a perspective view of the forklift device 30 for a drum can, and the forklift main body 5, the wheels 7, the mast 16, the lifting mast mechanism 31 having the chain 12, the pulley 13, the lifting cylinder 14, and the like are provided. It has a gripping mechanism shift mechanism 32, a pair of drum can upper surface gripping mechanisms 33, a temporary stand 34 provided at the front end portion of the forklift body 5 so as to be vertically movable, and a control operation mechanism 35.

FIG. 2 is a plan view of the lifting mast mechanism 31, the gripping mechanism shift mechanism 32, and the drum can upper surface gripping mechanism 33, and FIG. 3 is a side view of the same, showing the lifting mast 36 that moves up and down along the mast 16. The base plate 37 for the gripping mechanism is attached to the base plate 37, and the horizontal girder 38 for the left-right shift mechanism is fixed to the base plate 37 for the gripping mechanism.

The left / right shift mechanism horizontal girder 38 is provided with a left / right shift horizontal arm 39 so as to be orthogonal to the right / left shift mechanism horizontal girder 38 in the length direction (left / right direction) (vertical direction in FIG. 2) of the left / right shift mechanism horizontal girder 38. In addition to being movably attached, a drum can pusher 40 capable of simultaneously pushing the side surfaces of the two drum cans 1 is attached to a tip end portion of the horizontal shift horizontal arm 39.

On the inner wall surface of the horizontal girder 38 for the left-right shift mechanism, a rack 41 for left-right shift is provided along the length direction thereof.
The left-right shift horizontal arm 39 is provided with a left-right shift pinion 42 that engages with the left-right shift rack 41, and a left-right shift drive device 43 that rotationally drives the left-right shift pinion 42.

The left / right shift horizontal arm 39 is provided with a pair of front / rear shift pulleys 44 in the front / rear direction, a front / rear shift chain 45 is attached to the front / rear shift pulley 44, and the front / rear shift drive unit 46 drives the rotation. . The front / rear shift driving machine 46, the left / right shift driving machine 43, and the lifting cylinder 14 are controlled and operated by the control mechanism 3.
The control operation is performed by 5.

A front-rear shift horizontal arm 47 is fixed to the front-rear shift chain 45 so as to be orthogonal to the left-right shift horizontal arm 39, and a pair of drum can upper surface gripping mechanisms 33 are provided at the left and right ends of the front-rear shift horizontal arm 47. Each of them is attached and inserted into the storage shelf 2 so that it can be brought into contact with the upper surface of the drum can 1. With the rotation of the front-rear shift chain 45, the front-rear shift horizontal arm 47 can be moved in the front-rear direction (left-right direction in FIGS. 2 and 3) along the guide rail 48 (FIG. 3).

The pair of drum can upper surface gripping mechanisms 33 respectively include the drum can suction pad units 4 as gripping members.
9 and a vacuum unit 50. Vacuum unit 50
Is controlled by the control operation mechanism 35.

The drum can suction pad unit 49 includes a vacuum suction pad body 51, a number of vacuum suction pads 52 formed under the vacuum suction pad body 51, and a bellows 53 which constitutes a vertical fine movement mechanism of the vacuum suction pad 52. The vacuum suction pad main body 51 has an engaging guide portion 54 formed on the outer peripheral portion thereof. A safety chain 55 that connects the front-rear shift horizontal arm 47 and the vacuum suction pad body 51 may be provided.

The vacuum unit 50 has a vacuum pump 56 capable of obtaining a vacuum degree of about 0.1 atm or less, an electromagnetic valve 57, and a pad pipe for branching from the electromagnetic valve 57 and connecting to the vacuum suction pad body 51. 58 and a bellows pipe 59.

FIG. 4 is a schematic arrow view seen from the IV direction of FIG. 3, and as shown in the drawing, the vacuum suction pad main body 51 (vacuum suction pad 52) is used for the upper surface part (top surface 1
By vacuum adsorbing A) and making the inside of the bellows 53 a negative pressure, the drum can 1 in the adsorbed state can be lifted slightly upward. Therefore, it is sufficient to provide the storage rack 2 with a space (height H) for inserting the vacuum suction pad 52 into the upper portion of the top surface 1A of the drum 1 of the storage rack 2 and slightly lifting it. It is a thing.

That is, as the accommodation height of the storage shelf 2, the height of the drum 1 and the vacuum suction pad body 51
The height of the (vacuum suction pad 52), the stroke of fine vertical movement by the bellows 53, the height of the horizontal shift horizontal arm 39, and the total height can be set and set. In practice, these height dimensions are drum cans. It is about a fraction of the height of 1 and can be configured to about 200 to 300 mm.

An arbitrary mechanism other than the bellows 53 can be adopted as a vertical fine movement mechanism for lifting up the drum can 1 while the drum can 1 is sucked by the vacuum suction pad 52.
For example, the drum can 1 in the sucked state may be finely moved up and down by slightly moving up and down the lifting mast mechanism 31 itself.

FIG. 5 shows a drum can suction pad unit 49.
6 is a sectional view showing an example of another drum can suction pad unit 60 corresponding to FIG.
In No. 0, a guide frame 61 fixed to the front / rear shift chain 45 is provided with a mounting support member 62 and a driven spring 63 having a cross-section V-shape, and the bellows 64 is fixed to the mounting support member 62, and a partition wall 65 is interposed therebetween. A vacuum suction pad body 66 is provided.

The upper portion of the mounting support member 62 having a cross-section character shape is movable left and right in the guide frame 61 while receiving the biasing force of the driven spring 63.
When the drum can suction pad unit 60 descends toward the drum can 1, the engaging guide portion 54 is provided on the upper surface of the drum can 1 (the upper circumferential portion 1 located on the outer periphery of the top surface 1A).
It is possible to absorb the movement of the vacuum suction pad body 66 swinging in the diametrical direction of the top surface 1A in contact with B).

6 and 7 are pneumatic circuit diagrams of the vacuum unit 50. A check valve 67 and a throttle valve 68 are provided in parallel in the middle of a bellows pipe 59. FIG. 6 shows a solenoid 69. 7 shows a state in which the drum can 1 is sucked by the drum can suction pad unit 49 by operating FIG.
Indicates an open state in which this adsorption state is released.

In the suction state shown in FIG. 6, the electromagnetic valve 57 is switched so that the inside of the vacuum suction pad main body 51 becomes negative pressure through the pad pipe 58. Bellows piping 59
Since a throttle valve 68 is provided in the vacuum suction pad main body 51, the timing at which the bellows 53 becomes a negative pressure is slightly delayed from that of the vacuum suction pad main body 51, and the vacuum suction of the drum can 1 by the vacuum suction pad 52 of the vacuum suction pad main body 51 is followed by the drum can. 1 can be lifted up.

In the open state shown in FIG. 7, the electromagnetic valve 5
7 is switched to introduce the outside air into the vacuum suction pad main body 51 and the bellows 53.
The vacuum suction state of the top surface 1A of the drum can 1 is released.

Next, the drum can suction pad unit 49,
The necessary size (diameter or area) of the vacuum suction pad bodies 51 and 66 for suctioning the drum 1 by the vacuum unit 60 and the vacuum unit 50 will be calculated below. The atmospheric pressure is about 1 Kg / cm ² , and the maximum vacuum pressure difference of the normal vacuum unit 50 is 0.5 to 0.7 Kg / cm 2.
^2, it is considered that the vacuum pressure under a low-pressure environment, that is, the negative pressure capable of being adsorbed, is about 0.6 Kg / cm ^{2 on} average.

Since the standard drum can 1 has a capacity of 225 liters and the specific gravity of petroleum as a content is 0.8, its weight is 225 × 0 when the drum can 1 is fully filled. 2.8 = 180 Kg, usually with a capacity of 200 liters, the weight is 160 Kg (200
× 0.8) and the weight of the drum 1 itself (20 to 30)
If Kg) is added, the maximum weight of the drum 1 in the filled state is considered to be 210 Kg.

The lifting capacity of the vacuum suction pad body 51 is as follows: weight × acceleration × safety factor = 210 × 1.2 × 1.2 =
It becomes 302.4 Kg.

Assuming that the necessary diameter of the vacuum suction pad body 51 is D, from the equation of π / 4 · D ² = 302.4 / 0.6,
It can be calculated as D = 25.4 cm.

FIG. 8 is a plan view of the drum can 1. Even if the drum can 1 has a minimum diameter of 60 cm, D = 25.4.
The cm can be provided on the upper surface (top surface 1A) of the drum can 1 sufficiently even if the plug 1C of the drum can 1 is avoided.

When a small vacuum suction pad 52 is used instead of the vacuum suction pad main body 51, if the diameter d is 6 cm and the required number of the vacuum suction pads 52 is n, then n.pi./4. From the equation of d ² = 302.4 / 0.6,
It can be calculated that n ≧ 17.8 = 18.

Specifically, as shown in FIG. 9, when a total of 18 vacuum suction pads 52 are provided even if the vacuum suction pads 52 have a diameter of 7 cm with a margin between adjacent vacuum suction pads 52. And the maximum required diameter is 4
It is 2 cm, and like the case of FIG. 8, it can be sufficiently provided on the upper surface portion (top surface 1A) of the drum 1 even if the plug 1C of the drum can 1 is avoided.

The operation of the forklift device 30 for a drum having the above-described structure will be described with reference to FIGS.
Will be described below with reference to. FIG. 10 is a plan view showing a state in which the drum can forklift device 30 has entered the passage 3 of the storage shelf 2, and FIG. 11 is a perspective view showing the operation procedure of the drum can suction pad unit 49 and the temporary mount 34 in particular. FIGS. 12 and 13 are side views showing a state in which the drum can suction pad unit 49 is inserted into the storage rack 2 to suck the drum can 1 on the storage rack 2. FIGS. 13 to 17 are drum can suction pad units. FIG. 14 is a schematic plan view showing a correlation arrangement state between 49 and the drum can 1 to be taken out or taken out, and FIG. 13 is a plan view showing a neutral state in which the drum forklift device 30 has entered the passage 3 of the storage shelf 2; 14 shifts one of the drum can suction pad units 49 to the left side (lower side in the figure) and inserts it into the storage shelf 2 to attach the suction pad unit 49. FIG. 15 is a plan view showing a state in which 49 is lowered to adsorb and lift the drum can 1, and FIG. 15 is a plan view showing a state in which the suction pad unit 49 is returned to the neutral position and the drum can 1 is placed on the temporary stand 34. The other drum can suction pad unit 49 is shifted to the right side (upper side in the figure), and is inserted into the storage shelf 2 in the same manner as in FIGS. 14 and 15, and the drum can 1 is taken out and placed on the temporary placing stand 34. 17 is a plan view of the state in which the drum can suction pad unit 49 is moved backward (rightward in the figure) by the width of the drum can 1 and the drum can suction pad unit 49 is positioned on the side surface of the next pair of right and left drum cans 1. It is a top view.

First, as shown in FIG. 10 or FIG.
The forklift device 30 for the drum can is stopped so that the drum can suction pad unit 49 is located next to the drum can 1 to be taken out, and the lifting mast mechanism 31 is driven to move the drum can suction pad to a position slightly higher than the top surface 1A of the drum can 1. Position the unit 49.

In this state, as shown in FIG. 14, the left and right shift driving machine 43 of the gripping mechanism shift mechanism 32 is driven to insert the left and right shift horizontal arm 39 into the storage shelf 2 to adsorb the drum can suction pad unit 49. Is positioned above the top surface 1A of the drum 1 (operation of FIG. 11).

Next, air is sent to the bellows 53 to lower the drum can suction pad unit 49 (operation of FIG. 11), and the vacuum suction pad 52 of the drum can suction pad unit 49 is applied to the top surface 1A of the drum can 1 with a predetermined pressing force. In the contacted state, the drum can 1 is sucked by vacuum suction, and the bellows 53 is raised to lift the drum can 1 from the storage shelf 2 (operation of FIG. 11).

Then, as shown in FIG. 15, the left and right shift driving machine 43 is rotated in the reverse direction to take out the drum can 1 from the storage shelf 2, and the elevating mast mechanism 31 lowers the drum can 1 so that the drum can 1 can be placed on the temporary mount 34. Is temporarily placed (operation of FIG. 11). In this state, the drum can suction pad unit 49 has returned to the original neutral position (operation of FIG. 11).

The height F from the floor surface of the lowest level position of the temporary placing rack 34 can be set to be equal to or lower than the lowest level position of the storage shelf 2.

As shown in FIG. 16, the same take-out operation is carried out for the drum can suction pad unit 49 on the opposite side to take out the drum can 1 from the opposing storage rack 2.

The drum can 1 taken out is temporarily placed next to the drum can that was previously taken out and temporarily placed on the temporary placement mount 34, and is temporarily placed on the temporary placement mount 34 so as to be aligned in two rows. .

Then, as shown in FIG. 17, the front-rear shift driving machine 46 of the gripping mechanism shift mechanism 32 is driven to shift the drum can suction pad unit 49 by one drum can 1 in the advancing direction or the retreating direction. The same take-out operation can be performed. That is, a pair of the drum cans 1 on the rear row side or the front row side of the taken-out drum cans 1 described above are taken out and arranged on the temporary placing stand 34 so that a total of four drum cans 1 are aligned and temporarily placed.

Thus, a total of four drums 1 can be temporarily placed on the temporary stand 34 at a time and aligned in two rows and two lines. As shown in FIG. 10 and FIG. 11, the drum can forklift device 30 is run as it is in the direction of the truck 8 (operation of FIG. 11), and the two drum cans 1 are simultaneously sucked and lifted again by the pair of drum can suction pad units 49 to be placed on the mounting surface of the truck 8. Transfer (operation of FIG. 11), slide the two drum cans 1 by the drum can pusher 40,
It can be pushed to the end of the truck 8 (operation of FIG. 11).

In the present invention, the above-mentioned procedure determines which of the four temporary placement positions on the temporary placement stand 34 is the temporary placement of the drum 1 or in what order. The handling operator is not limited to this, and the handling operator may do this in consideration of the storage alignment state of the drums 1 in the storage shelf 2 or which drums 1 should be taken out according to the contained liquid.

As described above, since the upper surface portion (top surface 1A) of the drum can 1 is gripped by the vacuum suction operation,
Theoretically, even if there is no space between the drums 1 on the storage shelf 2, the drums 1 can be lifted up and picked from the storage shelf 2. Therefore, the storage efficiency of the drums 1 in the storage shelf 2 can be increased. Since the drum can suction pad unit 49 for sucking the drum can 1 is shifted in the left-right direction and the front-rear direction, the direction of the forklift main body 5 itself can be changed for handling the drum can 1. Since it is unnecessary, the width W of the passage 3 in the storage shelf 2 can be set to the minimum necessary (about 50% of the conventional value).

Further, four trucks (two rows and two rows), or six trucks (two rows and three rows) at maximum with the conventional transport capacity, are temporarily placed on the temporary placing rack 34, and the truck 8 is used. Can be transported up to the point where the transport efficiency can be improved.

In the present invention, instead of gripping the side surface of the drum can 1 as in the conventional handling method, the drum can 1 is gripped at the upper surface (top surface 1A), and the first embodiment described above is carried out. Besides the method of sucking the top surface 1A by the vacuum suction operation as in the example, the drum can 1
The upper circumferential portion 1B (see FIG. 5), which has a shape slightly projecting to the circumferential portion of the top surface 1A, can be grasped so as to be hooked.

That is, the first holding member for the drum can 1 is used.
Although the vacuum suction pad 52 and the like are used in this embodiment, the engaging member of the upper circumferential portion 1B (grasping arm 83, FIGS. 19 and 20, which will be described later) can be used as the grasping member.

That is, FIG. 18 is a plan view of the storage shelf 2 on which the drum cans 1 are placed. As shown in the drawing, no matter how closely the drums 1 are aligned, the diagonal side is the minimum unit at each diagonal corner. The concave arc-shaped triangular space portion 1D is vacant, and the second embodiment of the present invention focuses on the vacant arcuate triangular space portion 1D having a concave arc shape.

Specifically, FIG. 19 is a perspective view of a drum can engaging unit 81 in a drum can forklift device 80 according to the second embodiment, and FIG. 20 is a side sectional view of the drum can engaging unit 81. It corresponds to the drum can suction pad unit 49 in the first embodiment, and has a grip body 82 attached to the front-rear shift horizontal arm 47 and at least three radial bodies (one end rotatably attached to the grip body 82). In the illustrated example, four gripping arms 83 (upper circumferential portion engaging member) and gripping arms 83
And a horizontal arm 84 connecting the two.

The grip body 82 may have the same structure as that of the guide frame 61, the mounting support member 62 having a U-shaped cross section, and the driven spring 63 as shown in FIG. 5, and the circle formed in the lower portion thereof. Gripping arm 8 in the circumferential groove 85
The end of 3 is loosely fitted.

The end portion of the gripping arm 83 is an engaging guide portion 86 having the same function as the engaging guide portion 54 (FIG. 3), and a drum can engaging portion 87 is formed in the inner portion. The drum can 1 can be lifted by engaging with the upper circumferential portion 1B of the drum can 1.

A cylinder rod 89 of a vertical fine movement cylinder 88 is attached to the horizontal arm 84, and
A compression spring 90 is provided between the gripping arm 83,
The gripping arm 83 is swung around the loose fitting swinging fulcrum 91 and is always biased in the engagement direction between the upper circumferential portion 1B of the drum can 1 and the drum can engaging portion 87. The vertical fine movement cylinder 88 is controlled and operated by the control operation mechanism 35.

The drum can engaging unit 81 having such a configuration
In order to lift the drum can 1, the drum can engaging unit 81 is lowered from above the drum can 1, and the engaging guide portion 86 comes into contact with the upper circumferential portion 1B of the drum can 1 and descends along it. Drum can engaging part 87
Oscillates against the urging force of the compression spring 90 and engages with the upper circumferential portion 1B to make it liftable.

In this state, the vertical fine movement cylinder 88 is driven to pull up the drum can engagement portion 87 together with the cylinder rod 89 and the horizontal arm 84, so that the drum can 1 can be lifted up from the storage rack 2.

Further, when the drum can 1 is placed on a predetermined portion such as the temporary mount 34 and the vertical fine movement cylinder 88 is driven to lower the horizontal arm 84 together with the cylinder rod 89 slightly, the gripping arm 83 causes the compression spring 90 to move. It is possible to disengage the upper circumferential portion 1B of the drum can 1 from the engagement with the drum can engaging portion 87 by swinging around the loose fitting swing fulcrum 91 against the urging force of the drum can.

The operations such as taking out the drums from the storage shelf 2, transporting them, and transferring them to the truck 8 are the same as in the case of the drum can forklift device 30, so a detailed description thereof will be omitted. .

The drum can engaging unit 81 is capable of handling the drum can 1 by the engagement of the drum can engaging portion 87 and the upper circumferential portion 1B of the drum can 1, and the drum can suction unit of the first embodiment. Pad unit 49
As described above, the vacuum unit 50 need not be provided and is effective when the top surface 1A of the drum 1 is not suitable for vacuum suction.

As described above, according to the present invention, the drum cans 1 can be loaded with a processing capacity several times higher than that of the conventional handling method of transporting the drums 1 one by one, and a single forklift can be used. It is possible to work for 5 to 6 units, the storage space for the drum 1 can be reduced to about half that of the conventional one, and the storage efficiency is extremely high.

The forklift device according to the present invention is
Conventional counter type forklift 10 and reach fork type forklift 2 shown in FIGS. 22 and 23.
It can be applied to any type of forklift such as 0, and the forklift main body can have the same function as described above by changing only the drum can handling part as it is, and it can also be applied to the truck in the automatic production line. Can be applied to the transportation of parts and products between each station of the automatic production line and the storage shelves.

[0097]

As described above, according to the present invention, since the drum cans are lifted up at the top surface or the top surface portion such as the upper circumferential portion of the drums, the drums can be arranged on the storage shelf as an aligned state. It is possible to improve the storage efficiency of the drum cans by minimizing the gap between the two, and the gripping mechanism of the drum can top surface can be moved back and forth and left and right, so the width of the storage shelf passages should be made extremely small. The storage space efficiency can also be improved.

Furthermore, since a plurality of drums (for example, four drums) can be temporarily placed at the same time and simultaneously transported to a truck or the like, the transport processing efficiency can be improved and
In particular, by adopting a pair of gripping members, two drums can be simultaneously loaded on a truck or the like, and the handling efficiency of the drums can be further improved.

[0099]

[Brief description of drawings]

FIG. 1 is a perspective view of a drum can forklift device 30 according to a first embodiment of the present invention.

FIG. 2 is a plan view of a lifting mast mechanism 31, a gripping mechanism shift mechanism 32, and a drum can upper surface gripping mechanism 33 portion.

FIG. 3 is a side view of a portion similar to FIG.

FIG. 4 is a schematic view seen from the direction IV of FIG.

FIG. 5 is a sectional view showing an example of another drum can suction pad unit 60 corresponding to the drum can suction pad unit 49.

FIG. 6 is a pneumatic circuit diagram of the vacuum unit 50 and is an explanatory view showing a state in which a solenoid 69 is operated to adsorb the drum can 1 by a drum can adsorption pad unit 49.

FIG. 7 is a pneumatic circuit diagram of the vacuum unit 50 and is an explanatory diagram showing an opened state in which the suction state is released.

FIG. 8 is a plan view of the drum 1 that is about to be vacuum-sucked by the vacuum suction pad main body 66.

FIG. 9 is a plan view of the drum can 1 about to be vacuum-sucked by the vacuum suction pad main body 51 (small vacuum suction pad 52).

FIG. 10 is a plan view showing a state in which the drum can forklift device 30 has entered the passage 3 of the storage shelf 2.

FIG. 11 is the same as the drum can suction pad unit 49.
FIG. 7 is a perspective view showing an operation procedure of a part of the temporary placing stand 34.

FIG. 12 is a side view showing a state in which a drum can suction pad unit 49 is inserted into the storage shelf 2 in an attempt to adsorb the drum can 1 of the storage shelf 2.

13 is a schematic plan view showing a correlation arrangement state of the drum can suction pad unit 49 and the drum can 1 to be taken out or taken out, and in particular, the drum can forklift device 30 has entered the passage 3 of the storage shelf 2. FIG. It is a top view of a neutral state.

FIG. 14 is a schematic plan view similar to FIG. 13, in which one drum can suction pad unit 49 is shifted to the left side (lower side in the drawing) and inserted into the storage shelf 2, and the suction pad It is a top view of the state where unit 49 descended and adsorbed and lifted drum 1.

15 is a schematic plan view similar to FIG. 13, and is a plan view showing a state in which the suction pad unit 49 returns to the neutral position and the drum can 1 is placed on the temporary stand 34, in particular.

16 is a schematic plan view similar to FIG. 13, and in particular, the other drum can suction pad unit 49 is shifted to the right side (upper side in the figure), and is the same as in FIG. 14 and FIG. FIG. 3 is a plan view showing a state in which the drum can 1 is inserted into the inside of FIG.

FIG. 17 is a schematic plan view similar to FIG. 13, in which the drum can suction pad unit 49 is moved backward by the width of the drum can 1 (to the right in the figure), and the drum can suction pad unit 49 is moved to the next pair of left and right drum cans. It is a top view of the state where it was located in the side surface of 1.

FIG. 18 is a plan view of the storage rack 2 on which the drum cans 1 are placed for explaining the points of interest of the drum can forklift device 80 (FIG. 19) according to the second embodiment of the present invention.

FIG. 19 is a perspective view of a drum can engagement unit 81 in the drum can forklift device 80 according to the second embodiment.

FIG. 20 is a side sectional view of the same.

FIG. 21 is a plan view of one stage portion of a storage rack 2 in which the conventional drum cans 1 are aligned one by one and placed and stored in multiple stages.

FIG. 22 is a schematic perspective view of the most conventional conventional counter type forklift 10.

FIG. 23 is a reach fork type forklift 20 of the same.
FIG.

FIG. 24 is a reach fork type forklift 20 of the same.
Reach-type forklift 22 which is a modified type of
FIG.

FIG. 25 is a perspective view of the turning type forklift 24 of the same.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 drum can 1A top surface (upper surface portion) of the drum can 1B upper peripheral portion (upper surface portion) located on the outer periphery of the top surface 1A of the drum can 1C plug of the drum can 1 1D slanted side formed outside the drum can 1 Recessed arc-shaped triangular space 2 Storage shelf 3 Passage between storage shelves 4 Forklift with can gripping mechanism 5 Forklift body 6 Claw unit 7 Wheels 8 Truck 10 Counter type forklift 11 Counterweight 12 Chain 13 Pulley 14 Lifting Cylinder 15 Fork 16 Mast 17 Inclination cylinder 20 Reach fork type forklift 21 Guide rod 22 Reach fork type forklift 23 Swivel axis 24 Turning type forklift 25 Turning frame 26 Fork lift unit 27 Drum can gripping arm 0 Forklift device for drum can 31 Lifting mast mechanism 32 Gripping mechanism shift mechanism 33 Pair of drum can upper surface gripping mechanism 34 Temporary stand 35 Control operation mechanism 36 Lifting mast 37 Grip mechanism base plate 38 Horizontal girder for horizontal shift mechanism 39 Horizontal shift horizontal Arm 40 Drum can pusher 41 Left and right shift rack 42 Left and right shift pinion 43 Left and right shift drive 44 Pair of front and rear shift pulley 45 Front and rear shift chain 46 Front and rear shift drive 47 Front and rear shift horizontal arm 48 Guide rail 49 Drum can suction pad Unit (grasping member) 50 Vacuum unit 51 Vacuum suction pad main body 52 Vacuum suction pad 53 Bellows (fine movement mechanism of the vacuum suction pad 52) 54 Engagement guide section 55 Safety chain 56 Vacuum pump 57 Electromagnetic valve 8 Pad Piping 59 Bellows Piping 60 Drum Can Adsorption Pad Unit 61 Guide Frame 62 Cross-section Inverted Mounting Support Member 63 Driven Spring 64 Bellows 65 Partition 66 Vacuum Adsorption Pad Main Body 67 Check Valve 68 Throttle Valve 69 Solenoid 80 For Drum Can Forklift device 81 Drum can engaging unit (grasping member) 82 Grip main body 83 Gripping arm (upper circumferential portion engaging member) 84 Horizontal arm 85 Circumferential groove 86 Engaging guide portion 87 Drum can engaging portion 88 Vertical fine movement cylinder 89 Cylinder rod 90 of vertical fine movement cylinder 88 Compression spring 91 Free-fitting swing fulcrum of gripping arm 83 L1 Width of claw unit 6 L2 Margin allowance of claw unit ΔL Required space between drum cans 1 (of drum can 1 Margin allowance) W with can gripping mechanism Drum width H air suction pads 52 of the passage 3 required for maneuvering the lift 4 in storage shelves 2 1
The height of the space that can be inserted into the upper part of the top surface 1A of the vehicle and slightly lifted it. F The height from the floor surface of the lowest level position of the temporary mount 34.

Claims (18)

[Claims] 1. A forklift handling method for a drum can, wherein the drum can is taken out of a storage rack for storing the drum can by a forklift, and the upper surface of the drum can is gripped by the forklift to take it out from the storage rack. A method of handling a forklift for a drum can, wherein the plurality of taken out drum cans are temporarily placed on a temporary placement stand. 2. A forklift handling method for a drum can, wherein the drum can is taken out of a storage rack for storing the drum can by a forklift, and the upper surface of the drum can is gripped by the forklift to take it out from the storage rack. The plurality of drums taken out are temporarily placed on a temporary placement platform, and the two drums can be transferred from the temporary placement platform to the loading platform of the truck at the same time by gripping the upper surfaces of the drums. Characteristic forklift handling method for drums. 3. A forklift handling method for a drum can, wherein the drum can is taken out of a storage rack for storing the drum can by a forklift, and the upper surface of the drum can is gripped by the forklift to take it out from the storage rack. The plurality of drums thus taken out are temporarily placed on a temporary placement platform, and the two drums are simultaneously transferred from the temporary placement platform to the loading platform of the truck by gripping the respective upper surfaces, and A forklift handling method for drum cans, characterized in that after transferring the two drums on the loading platform of this truck, these drums are slid to the other end of the loading platform and the drums are aligned. 4. The forklift handling method for a drum can according to claim 1, wherein an upper surface portion of the drum can is a top surface of the drum can. 5. The forklift handling method for a drum can according to claim 1, wherein an upper surface portion of the drum can is an upper circumferential portion of the drum can. 6. The forklift handling method for drum cans according to claim 1, wherein four of the drums can be temporarily placed on the temporary stand. . 7. The forklift handling method for drum cans according to claim 1, wherein the drums can be temporarily placed in two rows on the temporary stand. 8. A drum can forklift device for taking out a drum can from a storage rack for storing the drum can, the lifting mast mechanism being provided on the forklift body of the forklift device, and being capable of moving up and down along the lifting mast mechanism. ,
A drum can upper surface gripping mechanism having a gripping member capable of lifting the drum can by gripping the upper surface of the drum can; A forklift device for a drum can, comprising: a temporary placing base below the drum can upper surface gripping mechanism and at a front end of the forklift body, and capable of temporarily placing at least a plurality of the drum cans. 9. A forklift device for a drum can that takes out the drum can from a storage shelf for storing the drum can, wherein the forklift body of the forklift device holds one of the drum cans by gripping an upper surface portion of the drum can from the storage shelf. A drum can upper surface gripping mechanism having a pair of gripping members to be taken out one by one, and a temporary placement stand on which a plurality of the drum cans temporarily taken out by the drum can upper surface gripping mechanism can be temporarily provided are provided. A plurality of drums taken out from the storage shelf by the mechanism are temporarily placed on the temporary placement platform, and two drums are simultaneously transferred from the temporary placement platform to the truck bed by the pair of gripping members. A forklift device for a drum can characterized by: 10. A forklift device for a drum can that takes out the drum can from a storage shelf for storing the drum can, wherein the forklift body of the forklift device includes at least one of a top surface and an upper circumferential portion of the drum can from the storage shelf. A drum can upper surface gripping mechanism having a gripping member that can be taken out one by one by gripping one of them and is movable in the left-right direction and the front-rear direction, a drum can pusher that can push the side surface of the drum can, and the drum can upper surface. And a temporary placing stand on which the plurality of drums taken out by the gripping mechanism can be temporarily temporarily placed, and by gripping the drum by the gripping member of the drum can upper surface gripping mechanism, Temporarily place the multiple drums taken out on the temporary stand. Temporarily placed, the gripping member transfers the drum cans from the temporary placement platform to a truck carrier, and on the truck carrier, the drum cans are transferred, and then the drum cans are pushed by the drum cans. A forklift device for a drum can, wherein the drum can is slid to the other end side and the drum cans are aligned. 11. The forklift device for a drum can according to claim 8, wherein the grip member is a vacuum suction pad capable of sucking the top surface of the drum can. 12. The gripping member is an upper circumferential portion engaging member capable of engaging with an upper circumferential portion of the drum can, as claimed in any one of claims 8 to 10. Forklift device for drums. 13. The forklift device for a drum can according to claim 8, wherein the holding member is capable of finely moving up and down while holding the upper surface of the drum can. . 14. The gripping member is provided with an engaging guide portion for guiding the gripping member so as to be engaged with the upper surface portion of the drum can.
The forklift device for a drum according to any one of 1. 15. The forklift device for a drum can according to claim 8 or 9, wherein the upper surface of the drum can is the top surface of the drum. 16. The upper surface portion of the drum can is the upper circumferential portion of the drum can.
Alternatively, the drum forklift device according to claim 9. 17. The forklift device for a drum can according to claim 8, wherein four of the drum cans can be temporarily placed on the temporary stand. 18. The drum can forklift device according to claim 8, wherein the drum cans can be temporarily placed in two rows on the temporary stand.