JP2658758B2 - Suction and transfer device and transfer method for plate-like body - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laminated steel plate,
A plate-shaped suction and conveyance device for sequentially sucking and holding aluminum alloy plates and other thin plates of various materials (hereinafter collectively referred to as plate-shaped members) one by one sequentially from the top one and transferring them to a predetermined position; It relates to a transport method.

[0002]

2. Description of the Related Art Conventionally, when packing or shipping a steel plate, an aluminum alloy plate, or a thin plate made of various other materials, a plurality of plate-like bodies stacked on a table are removed one by one from the top one by suction means. Each of them is sequentially suction-held, raised, transported, loaded on a separate table, and packed. When dropping and loading on another table, it is placed via interleaf paper such as kraft paper in order to prevent it from being in close contact with the plate below and from being scratched on the surface. In such a plate-shaped suction and conveyance device, it is important to transport and lift the uppermost plate in a short time without being damaged one by one. Especially,
The surface of the aluminum alloy plate is soft, and when it is adsorbed by the adsorption means, it is easily scratched by the suction mark of the suction pad or even a slight displacement, and it has a large effect on the quality. It is an obstacle. In addition, since the stacked plate-like members are in close contact with each other and are difficult to separate, simply holding the uppermost plate-like member by suction with suction means and lifting the plate-like member in close contact with the lowermost plate-like member will result. May be lifted and transported. Therefore, conventionally, in order to prevent such simultaneous conveyance of a plurality of sheets, air is blown between the plate-like bodies or disclosed in JP-A-59-1821.
No. 35, “Plate-like body handling device”
The plate-like body is shaped like a ship bottom, that is, the surface side is concave,
The rear surface is curved and raised so as to have a convex surface. In this case, air flows between the uppermost plate and the lower plate located therebelow to form an air layer. There is an advantage that the plate-like body can be reliably separated and transported, and simultaneous transport of a plurality of sheets can be prevented, and occurrence of scratches and the like can be prevented.

[0003]

However, in the above-mentioned conventional suction transfer apparatus, the purpose is to improve the separation performance of the plate-like body when suction-holding and lifting, and to prevent the occurrence of scratches and the like. However, no countermeasures have been taken with respect to the occurrence of scratches and the like when dropping and loading on another table after being transported to a predetermined position. That is, when placing on a different table, the suction means is lowered to a predetermined height position and stopped, and then the suction holding state is released, thereby dropping the held plate-like body onto the table. Although it is loaded, it is dropped in a flat state or a state of being bent into a ship bottom shape, so the drop impact at the center of the plate is large, and the plate-like body is easily damaged as shown in Table 2 (described later). There was an inconvenience.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to reliably separate and suck and hold a plurality of sheets at a time to simultaneously transport and hold a plurality of sheets. Adhesive transport of plate-shaped body to prevent the occurrence of scratches at the time, and to effectively absorb the drop impact by using an air film when dropping and loading, and to prevent the occurrence of scratches etc. An object of the present invention is to provide an apparatus and a transport method.

[0005]

In order to achieve the above object, a first aspect of the present invention is to provide a lower plate-like member which is lifted while bending the uppermost plate-like member into a ship bottom shape by means of a suction means.
Separated from, transported to a predetermined position in this state, and dropped
At times, it is bent in the shape of an inverted ship bottom and dropped. The second invention, the length let the plate-like body of the topmost is curved ship bottom shape are sequentially adsorbed increases from the end portion of the plate-like body
To separate from the lower plate,
In this state, it is transported to a predetermined position, and when it is dropped, it is bent in the shape of an inverted ship bottom and dropped.

[0006]

According to the present invention, the uppermost plate is formed at the time of holding by suction.
Lift the book while bending it to the bottom of the ship
You. In order to bend like this, the outer hand
What is necessary is just to raise the step faster than the inside. Curved to the bottom of the ship
When this is done, the end of the plate is lifted and separated from the lower plate to form a gap, so that ambient air flows between the uppermost plate and the lower plate and Ensure separation of the upper plate. On the other hand, a plate-shaped body
When it is dropped, it is curved to have a slightly inverted bottom shape, that is, a convex surface on the upper surface side and a concave surface on the lower surface side . like this
Then, air is taken into the lower surface side of the plate-shaped body, and this air layer absorbs the impact at the time of dropping, and prevents the surface of the plate-shaped body from being damaged.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. FIG. 1 is a schematic configuration diagram showing one embodiment of the suction conveyance device according to the present invention. The schematic configuration and operation of the suction conveyance device will be described. Reference numeral 1 denotes a first table on which a plurality of plate-like bodies 2 are stacked, and 3 denotes a first table.
This is a suction conveyance device that sequentially suction-holds and lifts the plate-like bodies 2 stacked thereon one by one from the highest one, and conveys the plate-like bodies 2 onto the second table 4. The suction transfer device 3 includes a lifting arm 5 that is vertically movable and horizontally movable and is moved up and down by a driving device (not shown), and a vacuum pump and the like that is disposed on the lifting arm 5 and that is not shown. A plurality of suction means 6 for vacuum-sucking the plate-like body 2 by a vacuum generator;
And a drive means 7 such as an air cylinder for individually raising and lowering each suction means 6. Each of the driving means 7 has a different driving timing and operation stroke, and is loaded on the first table 1 by driving only the outermost driving means 7A to lift the outermost suction means 6A at the time of stripping. When the uppermost plate-shaped body 2a is bent in the shape of a ship bottom and lifted, and transported in the horizontal direction, the inner driving means 7B to 7B are used.
D is driven to raise the inner suction means 6C, while the drive of the outermost drive means 7A is set to the non-drive state, thereby causing the outer suction means 7A to bend in a reverse ship bottom shape as opposed to the suction rise state. Is configured to be dropped and loaded on the table 4.

The plate 2 has a thickness of 0.2 mm to 3 m.
m of a relatively thin aluminum alloy plate
Is dropped and stacked on the table 4, the interleaf 8 wound in a roll is fed out by an unillustrated interleaf insertion device, and is placed and cut. It is transported by the suction transport device 3 and is dropped and loaded. By repeating such a series of operations, the plate-shaped body 2 can be automatically conveyed.

Next, the structure and the like of the suction conveyance device 3 will be described in more detail with reference to FIGS. 2A is a partially cutaway front view of the suction conveyance device 3, FIG. 2B is a bottom view of one row of one set of the suction means 6, FIG. 3 is a cross-sectional view of the suction means 6 at the origin position, and FIG. FIG. 7 is a cross-sectional view showing a state in which it is descending at a low speed due to a stripping operation. The suction means 6 disposed on the lifting arm 5 includes three types of suction pads, that is, two sets of left and right end pads 6 located at both ends of the lifting arm 5.
A, two sets of left and right anchor pads 6B located inside the end pad 6A and three sets of center pads 6C (6C1, 6C2) located inside the anchor pad 6B. 2 to 4 show only the suction means 6 arranged in a line in the horizontal direction, but in an actual apparatus, such suction means 6 is provided depending on the size of the plate-like body 2. A plurality of rows, for example, four to six rows are also arranged in the vertical direction. The suction means 6 arranged in one horizontal row may be appropriately arranged according to the end length of the plate-like body 2, for example, about 50 c.
m, two rows or three rows from about 50 cm to about 130 cm. Therefore, in the case of two rows, they are held together by an arm (not shown) orthogonal to the elevating arm 5.

[0010] The end pad 6A is provided with suction means on the lower surface of the outer end portion of a pad holder 13 which is disposed on the lower surface near the end portion of the lifting arm 5 so as to be tiltable in all directions via an articulated joint 12. An appropriate number, for example, three, are arranged in a direction orthogonal to the arrangement direction of the six. A driving means 7A such as an air cylinder for raising and lowering the pad end pad 6 of the suction means 6 is disposed at the end of the lifting arm 5 so as to be tiltable via an articulated joint 14, and extends downward from the cylinder 16. The outer end of the protruding piston rod 18 a is connected to the upper surface of the outer end of the pad holder 13 via an articulated joint 17. The pad holder 13 has a plan view E
Piston rod 18 associated with the driving of the driving means 7A.
Along with the reciprocating operation of “a”, it is swung about the joint 12 as a pivot point. At this time, the driving means 7A swings around the joint 14 as a pivot point. When the driving means 7A is in the non-driving state, the pad holder 13 is inclined at a required angle such that the outer end is located below the inner end as shown in FIGS.

The anchor pad 6B has no driving means, and the suction pad 6B is provided on the lower surface of the inner end of the pad holder 13.
By arranging an appropriate number, for example, two, in the direction perpendicular to the arrangement direction of the end pads 6A, they are positioned close to and inside the end pad 6A, and are tilted integrally with the pad holder 13; Since the height is not changed, the height hardly changes.

The center pad 6C (6C1, 6C2)
Are provided at four positions on both sides of the lower surface of three pad holders 19A, 19B, and 19C disposed on the lower surface side of the center and intermediate portions of the lifting arm 5, respectively. The number of center pads 6C (6C1, 6C2) is not limited to four, and can be arbitrarily selected according to the size and capability of the device. Each of the pad holders 19A, 19B, and 19C has a driving means 7 having a central portion on the upper surface provided on the lifting arm 5.
B, 7C, 7D piston rods 18b, 18c, 18
d is swingably connected to the lower end of each of them via joints 20a, 20b, and 20c. Therefore, in the present embodiment, the adsorbing means 6 arranged in one horizontal row has a total of 2
It is composed of two suction pads.

The operating strokes of the piston rods 18a to 18d of the driving means 7A to 7D are different from each other, the operating stroke of the piston rod 18a is the shortest, the operating stroke of the piston rods 18b and 18d is the same, and the operating stroke of the piston rod 18a is the same. Longer, the working stroke of the piston rod 18c is maximized. As shown in FIG. 1, compression coil springs 22a to 22d for urging the piston rods 18a to 18d downward are resiliently mounted inside the cylinders of the driving means 7A to 7D, respectively. Therefore, each piston rod 18a-1
8d is depressed by the action of the springs 22a to 22d and locked at the lowest position in the non-drive state shown in FIG. 4 in which the drive means 7A to 7D do not receive internal pressure. At this time, the end pad 6A and the anchor pad 6B are at the highest position at substantially the same height, then the outer center pad 6C1 located inside the anchor pad 6B is at the highest position, and the center center pad 6C2 is at the lowest position. You. 3 and 4, the illustration of the spring is omitted.

Next, a description will be given, with reference to FIGS. FIG. 3 is a view showing a state where the suction conveyance device 3 is stopped at a predetermined height position above the first table 1 which is the origin position. At this time, the driving means 7A is in a non-driving state,
The driving means 7B to 7D supply compressed air to the lower chamber of the cylinder and hold the driving state, thereby moving the piston rods 18b, 18c, 18d upward by the action of the springs 22b to 22d (FIG. 1), and It is locked to. In this state, the center pad 6C (6C1,
6C2) is set and held at a position slightly higher than the end pad 6A and the anchor pad 6B.

When the plate removing operation is started from the state shown in FIG. 3, the lifting arm 5 is lowered to a predetermined height at a high speed by a driving device (not shown) and then switched to a low speed. At the time of low-speed descent, as shown in FIG. 4, the driving means 7A is held in the non-drive state similarly to the high-speed descent, and the driving means 7B
7D is switched to the non-drive state by releasing the internal pressure of the cylinder lower chamber. Therefore, the piston rod 18b,
18c and 18d are lowered by the action of the springs 22b to 22d (FIG. 1) and locked at the lowest position, so that the center pad 6C2 is at the lowest position and the outer center pad 6C1 is located at the center. It is set and held at a position higher than 6C2 and lower than the end pad 6A and the anchor pad 6B. In this state, the lifting arm 5 is lowered at a low speed and the center pad 6C2 at the center, the outer center pad 6C1, the end pad 6A, the anchor pad 6B.
Is stopped by pressing lightly and sequentially on the upper surface of the uppermost plate-shaped body 2a. Therefore, the end pad 6A, the anchor pad 6B and the center pads 6C1 and 6C2 are raised and retracted against the springs 22a to 22d (FIG. 1), and are pressed against the plate-like body 2a with a predetermined pressure (FIG. 5).

When the end pad 6A, the anchor pad 6B, and the center pads 6C1 and 6C2 are pressed against the plate 2a, a vacuum generating device such as a vacuum pump is driven to cause these pads to be vacuum-adsorbed to the plate 2a. Next, as shown in FIG. 6, compressed air is supplied to the lower chamber of the driving means 7A to drive the driving means 7A, and the pad holder 13 is driven.
Is lifted and pivoted about the joint 12 (FIG. 3), and the end pad 6A is lifted by a predetermined amount. Then, the end of the plate-like body 2a is lifted as shown in FIG. 6 to be separated from the second plate-like body 2b, and a gap is formed between the plate-like body 2b and air. Inflow to form an air layer. At this time, the driving means 7B to 7D are kept in a non-driving state.

FIGS. 7 to 9 show the manner in which the lifting arm 5 is raised at a low speed and the suction means 6 removes the plate. When the end pad 6A is lifted by a predetermined amount, the anchor pad 6B
The center pads 6C1 and 6C2 are sequentially raised to lift the uppermost plate 2a, so that the gap between the plate 2a and the plate 2b gradually increases, and finally expands to the center. The plate 2a and the second plate 2b are surely separated in a short time. In addition, center pad 6C
1 and 6C2 are lowered by the action of the springs 22b to 22d (FIG. 1) when the lifting arm 5 moves upward because the driving means 7B to 7D are held in the non-driving state, and when the stroke end is reached. The ascent is started together with the elevating arm 5, and the uppermost plate 2a is lifted. FIG. 9 shows a plate 2
In this state, the center pad 6C2 is set at the lowest position, the outer center pad 6C1 is set higher than the center pad 6C2, and lower than the end pads 6A and 6B. Since the plate-like body 2a is held, it is curved like a ship bottom.

In order to more quickly and reliably perform the plate removing operation, it is desirable that the end pad 6A is positioned at the end of the plate-like body 2a and vacuum-adsorbed. In addition, when performing the plate removing operation of a thick plate that is difficult to bend to the bottom of the ship, the center pads 6C1 and 6C2 are pulled up with a force (air pressure) commensurate with the suction capacity, and the suspension load is distributed substantially evenly to all the pads. It is good to let. At this time, the lifting speed of the lifting arm 5 may be set low, the end pad 6A may be raised, and a gap may be formed between the lifting arm 5 and the lower plate 2b.

When the lifting arm 5 is moved up to a predetermined height at a low speed by picking up a plate by the suction means 6, it is temporarily stopped (stoppage of the ground) and switched to a high speed, and the height position at which the traversing (horizontal movement) is possible is performed. When the plate 2a moves upward, the plate 2a is conveyed to the upper side of the second table 4 (FIG. 1). During this transfer, the driving means 7A is switched to the non-driving state, the piston rod 18a is positioned at the lowest position, the pad holder 13 is tilted downward, and the driving means 7B to 7D are driven to drive the piston rods 18b, 1D.
8c and 18d are moved upward against the springs 22b to 22d (FIG. 1) and locked at the uppermost position. Therefore, in this state, the end pad 6A is held at a position slightly lower than the anchor pad 6B and the center pad 6C (6C1, 6C2), whereby the plate-like body 2a is turned into a light inverted ship bottom shape as shown in FIG. Curve and hold.

The elevating arm 5 that has moved above the second table 4 descends at a high speed, and switches to low speed descending when a sensor (not shown) detects the table 4 or the slip sheet 8 (FIG. 1) on the table 4. When it is lowered to a predetermined height, it stops. In this stopped state, the end pad 6A, the anchor pad 6B and the center pads 6C1, 6C2
Is released, the plate 2a sucked and held by these pads is dropped and loaded on the second table 4. At this time, since the plate-like body 2a is curved in the shape of a light inverted ship bottom, air is taken into the lower surface side, and this air layer absorbs and reduces the impact at the time of falling, thereby preventing scratches and the like from occurring. When the plate 2a is dropped and loaded on the second table 4, the lifting arm 5 moves up again and traverses, returns to the origin position, and repeats the above operation to automatically transfer the plate 2 I do.

[Examples] 50 aluminum plates (2S) having an end length of 1 m, a long side length of 2 m, and a thickness of 0.3 to 2.8 mm (a plate having a thickness of about 1 mm or less is a hard material, and others are soft materials) A second table provided with a guide so as to be bent to the bottom of a ship using a transfer device having two rows of suction means 6 shown in FIG. It was bent upside down and dropped to investigate the presence or absence of flaws (no interleaf paper was used). Table 1 shows the results.

[0022]

[Table 1]

From the results shown in Table 1, it can be seen that there is no scratch on the plate surface by dropping after bending to the inverted ship bottom shape. As a comparative example, when the sheet was dropped in a flat state without being bent to the inverted ship bottom shape, as shown in Table 2, large scratches were observed, and it was found that this was not preferable as a transport method.

[0024]

[Table 2]

[0025]

As described above, the apparatus and method for adsorbing and transporting a plate-like body according to the present invention allows the plate-like body to be curved to the bottom of a ship and lifted while curving.
Is separated from the lower plate by
When loading and dropping on a table, it is configured to bend to the bottom of the ship and drop it, so the plate picking operation is quick and reliable, and simultaneous transfer of multiple plates and It is possible to prevent the occurrence of a drop impact, and also to have a large effect of drop impact absorption at the time of drop loading, thereby similarly preventing the occurrence of scratches and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing one embodiment of a suction conveyance device according to the present invention.

FIG. 2A is a partially cutaway front view of a suction conveyance device,
(B) is a bottom view of the suction means.

FIG. 3 is a cross-sectional view of a state of the suction means at an origin position.

FIG. 4 is a cross-sectional view showing a state where the sheet is moving down at a low speed due to a stripping operation.

FIG. 5 is a cross-sectional view illustrating a plate removing operation.

FIG. 6 is a cross-sectional view illustrating a plate removing operation.

FIG. 7 is a cross-sectional view illustrating a plate removing operation.

FIG. 8 is a cross-sectional view illustrating a plate removing operation.

FIG. 9 is a view showing a state where the plate-like body is held in an inverted ship bottom shape.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st table 2 Plate-shaped body 3 Suction conveyance apparatus 4 2nd table 5 Elevating arm 6 Suction means 7 Driving means 6A End pad 6B Anchor pad 6C1, 6C2 Center pad

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B66C 1/02 9528-3F B66C 1/02 A (72) Inventor Toyoji Takada Koike, Inazawa-shi, Aichi Prefecture 1-11-1, Nikkei Sangyo Co., Ltd. Nagoya Branch Office (56) References JP-A-53-85065 (JP, A) JP-A-60-52417 (JP, A) JP-A-3-23114 (JP, A A) Japanese Utility Model Showa 62-25504 (JP, U) Japanese Utility Model Showa 55-35027 (JP, U)

Claims (2)

(57) [Claims] 1. A plate-like body suction and conveyance device for sequentially sucking and holding a plurality of stacked plate-like bodies one by one from a top one by a plurality of suction means and conveying the plate-like body, wherein the suction means is the uppermost one. Do not bend the bottom of the ship by holding the upper plate
Separate from the lower plate by lifting up
The plate-shaped object is conveyed to a predetermined position in the state described above, and when it is dropped, it is bent in the shape of an inverted ship bottom and dropped. 2. A method for adsorbing and transporting a plurality of stacked plate-like bodies by a plurality of suction means one by one by suction from a top one by one, and conveying the plate-like bodies. The body is sequentially sucked up from the end of the plate-like body and lifted while curving to the bottom of the ship, so that
When separated, transported to a predetermined position in this state, and dropped
A method of transporting a plate-like body, characterized in that the plate-like body is dropped into a reversed ship bottom shape.