JPH1179335A - Panel reversing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the safety of a work by reducing a space necessary for reversing a panel and controlling the strain and bending of the panel. SOLUTION: This device is equipped with a pair of tables 1 which are mutually opposite with a narrow space provided for receiving a panel and joined in one body and have an opening for inserting and drawing out the panel in an end part; an elevating base 31 for supporting the table rotatably centering around y-directional rotary shafts 13a, b; elevating mechanism for an elevating base 33, 33m; and fixed carrying tables 50A, 50B for inserting and drawing-out the panel from the table 1. The device is equipped with wheels 11b, 11d located at four corners of the table 1 and a pair of rails 12b for under-supporting the wheels. The table 1 has a roller conveyor 21; a clamp to restrict the panel; and a stopper to obstruct the movement of the panel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversing device for turning over a panel, and in particular, though not intended to be limited thereto,
The present invention relates to a panel reversing device in which a plurality of steel plates are turned into a single large-area steel plate (large plate) from the upper surface side by latent arc welding so that the lower surface side is also welded. This type of large plate (hereinafter simply referred to as a panel) is used as an outer plate in, for example, shipbuilding.

[0002]

2. Description of the Related Art For example, a width of 4 m, a length of 9.5 m, and a thickness of 20
When two to four mm steel plates are jointed and welded into one panel, as a typical method of inverting the panel, there are an inversion method of lifting the panel with a crane and a method of using an inversion table.

FIG. 13 shows a method of lifting and reversing using an overhead crane. In this case, as shown in FIG. 13A, a clamper is attached to one end of a panel placed on a surface plate, and the overhead crane is traversed while the clamper is lifted and driven by the overhead crane.

FIG. 13B shows a state in which the overhead crane is moved to the left in the drawing while lifting one end of the panel, and the panel stands up with the end opposite to the lifting end as a fulcrum. When the panel rises vertically as shown in FIG. 13 (c), the clamper is lowered while driving the overhead crane further leftward as shown in FIG. 13 (d). Then, the panel is lowered onto the surface plate as shown in FIG.

Referring to FIG. 14, an inversion method using a pair of hinged tables will be described. In this case, as shown in FIG. 14A, a panel is formed on one of the tables A by splicing. Next, as shown in FIG. 14 (b), both tables A and B are raised so as to be relatively closed, and as shown in FIG. 5 (c), the panel is sandwiched by both tables, from which the panel is removed. Table B
After the table B is rotated in the direction in which the table B is on the lower side so as to be supported, the tables A and B are relatively opened as shown in FIG. 14D, and as shown in FIG. As shown, tables A and B are returned horizontally.

[0006]

However, in the lifting method using the overhead crane shown in FIG. 13, the panel may be bent by its own weight when the panel is lifted or hung, and distortion may remain on the panel after the reversal. There is. That is, the panel, which was flat before the reversal, bends, which hinders the operation of the next step. In particular, there is a high possibility that bending occurs when the plate thickness is small. Further, with this suspension method, there remains uneasiness regarding work safety.

Further, in the method using the reversing table shown in FIG. 14, although the work safety is improved, the work space needs to be about twice as large as the lifting method shown in FIG. That is, a space equal to or more than two tables on which the panel is mounted is required.

A first object of the present invention is to reduce the space required for panel inversion, and a second object to suppress distortion and bending of the panel at the time of inversion, and to improve work safety. This is the purpose of 3.

[0009]

[Means for Solving the Problems]

(1) The panel reversing device of the present invention is opposed to and integrally joined with a narrow space for receiving the panel (10), and at least one end has an opening for panel insertion / removal connected to the space. A pair of open tables (1); an elevating platform (31) for supporting the tables rotatably about rotating shafts (13a, 13b) extending in the y-direction; an elevating mechanism (33,
33m); and a fixed transport table (5) for inserting and removing a panel from outside the end of the table into the space inside the table.
0A, 50B);

[0010] For easy understanding, reference numerals in parentheses indicate corresponding elements of the embodiment shown in the drawings and described later.
Added for reference.

According to this, the fixed transport table (50A, 50A
B), insert the panel (10) into the space of the pair of tables (1), and drive the lift (31) upward with the lift mechanism (33, 33m) while rotating the rotary shaft (13a, 13b). The pair of tables (1) is rotated 90 degrees, and after the pair of tables (1) stand up, the elevator (31)
When the pair of tables (1) is further rotated by 90 degrees about the rotation shafts (13a, 13b) while the table is driven downward, the pair of tables (1) and the panel (10) therein are brought out of the loaded state. It is upside down. The panel (10) is sent out from the pair of tables (1) and transported by the fixed transport tables (50A, 50B), so that the panel (10) is transported with its front and back turned upside down. The horizontal plane area required for turning over is slightly larger than the area of the pair of tables (1) for accommodating the panel (10), and the panel (10) is a pair of tables.
Since it is in the inner space of (1), there is substantially no distortion or bending at the time of inversion. In addition, work safety is high.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION

(2) A pair of tables (1) integrally joined to face each other to hold the panel (10); a rotating shaft (13) extending in the y-direction.
a, 13b) to support the table so as to be rotatable around the table; (31) a lifting mechanism (33, 33m) for driving the lifting table up and down; wheels (11a to 11d) at four corners of the table (1) And a pair of mutually parallel rails (12a, 12b) extending in the x-direction for supporting the wheels below.

According to this, the panel (10) is inserted into the holding space of the pair of tables (1), and the lifting platform (33, 33m) is used to lift the platform.
While driving the (31) upward, the pair of tables (1) is rotated around the rotating shafts (13a, 13b) to rotate the wheels (11c, 1c) at one end of the table (1).
When the table (1) is rotated 90 degrees so that it is received by the rails (12a, 12b), the table (1) stands up, and up to this point, the table (1)
Is supported by rails (12a, 12b) via wheels (11c, 11d), and the upper driving load applied to the lifting mechanism (33, 33m) is small,
In addition, the inclined support is reliable. Further, while receiving the wheels (11c, 11d) by the rails (12a, 12b), the elevator (31) is driven downward, and the pair of tables (1) is further moved around the rotating shafts (13a, 13b) by 90 degrees.
When rotated, the pair of tables (1) and the panel (10) therein are turned upside down from the loaded state. In the process from the standing state to the inverted state, one end of the table (1) is supported by the rails (12a, 12b) via the wheels (11c, 11d), and the downward load applied to the lifting mechanism (33, 33m) is reduced. Small and reliable tilt support. The horizontal area required for turning over is slightly larger than the area of the pair of tables (1) for accommodating the panel (10).
Is located in the inner space of the pair of tables (1), so that there is substantially no distortion or bending at the time of inversion. In addition, work safety is high.

(3) The table (1) includes a roller conveyor (21) for supporting the panel (10) and transporting the panel (10) in the x direction. Table with this roller conveyor (21)
(1) Accept the panel (10) or send out the panel (10) of the table (1). Further, the panel (10) can be driven to the position of the stopper (41a-41f) for positioning. The peripheral surface of the roller conveyor (21) is adjusted so that the inner space between the pair of tables (1) and the panel of the outer space of the table (1) can be supported. By protruding outside, before or after turning over as described above,
The panel (1) can be fed onto the table (1) and the plate (1) can be used for plate joint welding.

(4) The table (1) is provided with clamps (42a to 42d) for preventing panel movement in a direction perpendicular to the panel (10) support surface. When the table (1) holding the panel (10) is rotated by 180 degrees, the support of the panel (10) is switched from one of the pair of tables (1) to the other,
The panel moves in a direction perpendicular to the panel (10) support surface by a distance larger than the panel thickness by the gap between the two, and this causes a mechanical impact, but the clamps (42a to 42d) prevent this. Reliable panel support and reliable prevention of distortion and bending.

(5) The table (1) is provided with a stopper (4) for preventing the panel from moving in the direction perpendicular to the rotating shafts (13a, 13b), that is, in the panel loading direction, along the panel supporting surface.
1a to 41f). The stoppers (41a to 41f) restrain the movement of the panel (10) along the panel supporting surface when the table (1) is rotated for turning over the panel as described above. Reliable panel support and reliable prevention of distortion and bending.

Further, the position of the center of gravity of the panel (10) is
When the table (1) is set at a position deviated from a, 13b) and the table (1) is driven upward, it can be automatically rotated.

Other objects and features of the present invention will become apparent from the following description of embodiments with reference to the drawings.

[0019]

FIG. 1 shows an embodiment of the present invention. In this embodiment, a panel 10 in which two to four steel plates having a width of 4 m, a length of 9.5 m, a thickness of 20 mm and a weight of 6 tons are continuously formed by submerged arc welding is used. The panel reversing device shown in FIG. 1 is a panel transfer line between a place where a plate joint welding apparatus is provided (double-sided welding stage) and a place where a longe assembly welding apparatus for welding a longe to the panel 10 is provided (longe attachment stage). It's above. Vertical frame 7
(And 6) shown in (b) of FIG.
To move in the horizontal direction x, y
1 is being guided. The portal frame (6) is located behind the portal frame 7 shown in FIG. The elevating table 31 is hung by the hoist 33, is driven up by the forward rotation of the elevating motor 33m, and descends by its own weight by the reverse rotation. The elevating table 31 is connected to the rotating shaft 13b (13a of FIG.
(A)) is rotatably supported.

In this embodiment, as shown in FIGS. 2 to 10, a table 1 is arranged between two pairs of portal columns 6, 7. As shown in FIG. 2 (a), a panel 10 in which the upper surfaces of a plurality of steel plates as materials are connected by plate welding.
Is + x from the -x direction from the place where the plate joint welding device is
And is carried into the inner space of the table 1. FIG.
FIG. 2B shows a cross section taken along line 2B-2B in FIG.

The loaded panel 10 is sent to the left end of the table 1 as shown in FIG.
Positions are determined in the + x direction by 1a to 41f ((a) in FIG. 11), and clamped and fixed in the z direction (thickness direction of the panel 10) by clamps 42a to 42d (FIG. 11) described later. When the panel 10 is carried into the table 1,
The table 1 is horizontally supported from below by hydraulic cylinders 14a to 14d, and the entrance of the table 1 is aligned with the pass lines of the fixed transfer rollers 50A and 50B.

By releasing the support of the hydraulic cylinders 14a to 14d on the lower surface, and because the center of gravity of the panel 10 is on the left side (FIG. 3) of the center of gravity of the table 1 (rotary shafts 13a and 13b). Table 1 tilts to the left as shown in FIG. As a result, of the wheels 11a to 11d ((a) in FIG. 11) at the four corners of the table 1,
c and 11d contact the upper surfaces of the rails 12a and 12b extending in the x direction.

When the table 1 is lifted up by the hoists 33, 33m together with the lifting table 31, the table 1 shown in FIG.
As shown in (b), the wheels 11c and 11d riding on the rails 12a and 12b roll on the rails 12a and 12b, and the table 1 rotates around the rotating shafts 13a and 13b.

As shown in FIGS. 6A and 6B, when the table 1 is rotated by 90 degrees, the elevator 31 is switched from upper drive to lower drive. As a result, the table 1 exceeds 90 ° due to the rotational inertia of the table 1, and the table 1 further rotates in the same direction as the rotation direction so far as the elevator 31 moves downward.

As shown in FIGS. 7A and 7B, the wheels 11c and 11d riding on the rails 12a and 12b further roll on the rails 12a and 12b, and the rotating shafts 13a and 13b.
The rotation continues around b.

As shown in FIGS. 8A and 8B, when the elevator 31 is lowered to a predetermined position (original position), the lowering of the elevator 31 is stopped there.

As shown in FIG. 9, the table 1 is horizontally supported from below by hydraulic cylinders 14a to 14d, and a panel carrying-in port (carry-out port) of the table 1 is passed through a fixed carrying table 50A. Fit to line. And clamp 4
2a to 42d are released, and the panel 10 rotated 180 degrees (upside down) from the loaded state is moved to the fixed transport table 5.
Then, the panel 10 is sent out to the place where the plate joining welding device is located using the fixed transfer table 50A. That is, return.

By performing the above operations, the panel 1
The front and back of 0 can be reversed. Since the panel 10 is held between the tables 1 and rotated as a single body, a small space is required for reversing the panel 10 (one panel + margin is required).
Since 0 is clamped by the clamps 42a to 42d of the table 1, substantially no distortion or bending occurs in the panel 10. Also, work safety is high.

As shown in FIGS. 10A and 10B, the hydraulic cylinders 14a to 14d are lowered to
Of the transfer rollers project from above, the continuation of these transfer rollers (pass lines on the upper surface of the tables) is fixed to the pass lines of the fixed transfer tables 50A and 50B. The panel 10 is sent from the fixed transport table 50A or 50B to the upper transport path line of the table 1,
At this time, by receiving and driving the transport table of the table 1, the upper surface of the table 1 is moved to the work place (the support base under the panel).
It can also be used as

Referring to FIG. The table 1 comprises a pair of tables facing each other, and each table is equipped with five roller conveyors 21 so that the panel feed direction is perpendicular to the rotation center lines of the table rotation shafts 13a and 13b. Conveyor motors 21ma to 21me for driving these rollers in forward and reverse rotations and power transmission mechanisms 22a to 22e are also provided in the table 1 as being shared by both the pair of tables. When the panel 10 is transported between the tables 1, the panel 10 is moved in the white arrow direction (+
(in the x direction), and is moved by the roller conveyor 21 installed on the table 1 to a position shown by a two-dot chain line (the front end of the panel 10
a-41f). Further, since the roller conveyor 21 protrudes from the upper surface of the table 1,
It can also be used as a transport means for the panel 10 when working on the upper surface.

FIG. 11B shows a side surface of the table 1. Near the tip of the table 1, stoppers 41c and 41f for positioning the panel 10 (41a, 41b, 41d,
41e). Positioning stoppers 41c, 41f (4
1a, 41b, 41d, 41e) are shafts 41cc, 41
fc (41ac, 41bc, 41dc, 41ec) can be rotated by about 60 degrees. When used as a normal stopper, hydraulic cylinders 41cs, 41fs (41as, 41ec) are used.
bs, 41ds, 41es), the table 1 stands up as shown by the solid line. Table 1
The stopper (41f in this figure) used as a positioning when the mirror is turned 180 degrees is also rotated by the rotating shafts (13a, 13a).
b) is provided at a position rotated 180 degrees around the center,
When not normally used, the hydraulic cylinders 41fs, 41c
s (41as, 41bs, 41ds, 41es), about 60 degree axes 41cc, 41fc (41ac, 41bc,
41dc, 41ec), and is stored in the table 1 so as not to interfere with the panel 10 as shown by a two-dot chain line.

In the vicinity of the tip of the table 1, clamps 42b and 42d (42a and 42d) for preventing the panel 10 from moving.
c). Clamps 42b, 42d (42a, 42
c) shafts 42bc, 42dc (42ac, 42cc)
Can be rotated about 60 degrees around the center, and is stored in the table 1 so as not to interfere with the panel 10 when the panel 10 is loaded. After the panel 10 is loaded and positioned, the hydraulic cylinder 42b
As shown by a two-dot chain line by s, 42ds (42as, 42cs), the panel 10 is raised from above and below to clamp the panel 10.

FIGS. 12A and 12B show the side and front of the table 1. FIG. The table 1 has wheels 11b (11
a, 11c, 11d) are provided via a wheel rotation center 15b (15a, 15c, 15d) having no driving force. Under the table, a rail 12b (12a) is laid, and a hydraulic cylinder 14 supporting the table 1 is provided.
By releasing b (14a, 14c, 14d), the wheels 11b (11a, 11c, 11d) move the rails 12b (1
2a), and the panel can be turned over. Now, the table 1 has the fixed transport tables 50A and 50B shown in FIG.
Hydraulic cylinders 14b, 1
4d (14a, 14c). The panel 10 is conveyed to the left (+ x direction) from the right (the double-sided welding stage) to the left (+ x direction) in the figure by the roller conveyor 21 installed between the tables 1 and moves between the tables 1, and its leading end (left end face) is positioned. Stopper 4
1c (41a, 41b). When the panel 10 comes into contact with the stoppers 41c (41a, 41b), the panel 10 is clamped, and the loading position of the panel 10 is determined at the end of the table 1. That is, the position of the center of gravity of the panel 10 is closer to the end of the table 1. The roller conveyor 21 and the positioning stoppers 41c, 41f (41a, 41b, 4
1d, 41e), the center of gravity can be easily and accurately aligned.

As described above, the positioning stoppers 41c,
41f (41a, 41b, 41d, 41e), the center of gravity of the panel 10 is shifted toward one end of the table 1, and the clamps 42b, 42d (42
By constraining the panel 10 to the table 1 according to (a, 42c), there is no rotational shake of the table 1 during 180-degree rotation or displacement of the panel 10, and the rotation stability is extremely high. Does not occur.

Referring again to FIG. Table 1 (the panel entrance) is a fixed transport table 50A, 50 shown in FIG.
At the level of the pass line B, after carrying in the panel 10,
After the support of the hydraulic cylinders 14b and 14d (14a and 14c) is released, when the vertical mechanisms 33 and 33m provided on the portal frame 7 (6) are operated, the table 1, panel 1
0 rotates 180 degrees. That is, the panel is inverted. The quadratic curve of the two-dot chain line shown in FIG.
It is a turning curve drawn by the tip. If the panel 10 is inverted on a pass line (actually, FL (floor level) +600 mm to 900 mm) through which the panel 10 is conveyed, a deep groove (depth half the panel width) is formed in the building floor. For example, about 7 m). In the present embodiment, as described above, the method in which the table 1 and the panel 10 are lifted to a predetermined position B as a single body, lowered to the pass line and rotated / reversed is adopted, so that the groove provided on the building floor can be shallow. The specifications are shown below.

Pass line: FL (floor level) +300 mm Predetermined position B: FL (floor level) +7600 mm Groove (pit) depth: FL-1200 mm.

[Brief description of the drawings]

FIG. 1 is a front view of one embodiment of the present invention.

2A is a front view showing a state in which a panel 10 is carried into the table 1 with the table 1 of the panel reversing device shown in FIG. 1 aligned with a pass line, and FIG. 2
It is a B-2B line sectional view.

FIG. 3 is a schematic view corresponding to a front view of the panel reversing device shown in FIG. 1 and shows a state where a panel 10 has been carried into the table 1;

4 is a schematic view corresponding to a front view of the panel reversing device shown in FIG. 1, showing a state in which support of hydraulic cylinders 14a to 14d is released, and wheels 11b and 11d are in contact with rails 12a and 12b.

5A is a front view of the panel reversing device shown in FIG. 1 when the lifting platform 31 is being driven to ascend, and FIG. 5B is a right side view.

6A is a front view of the panel reversing device shown in FIG. 1 immediately before switching the driving of the elevator 31 from the ascending drive to the descending drive, and FIG. 6B is a right side view.

7A is a front view of the panel reversing device shown in FIG. 1 when the lifting platform 31 is driven to descend, and FIG. 7B is a right side view.

8A is a front view of the panel reversing device shown in FIG. 1 at the time of stopping the lowering drive of the lifting platform 31, and FIG. 8B is a right side view thereof.

FIG. 9 is a view showing a state in which the lowering of the elevating table 31 is stopped and the table 1 is moved to the hydraulic cylinders 14b and 14d (14a and 14c).
FIG. 6 is a front view showing a state in which is driven downward and supported.

FIG. 10A is a front view of the panel reversing device shown in FIG. 1 when the table top is used as a work place;
(B) is a right side view.

11 (a) is a plan view of the table 1 shown in FIG. 1, and FIG. 11 (b) is a clamp 42a, 42b shown in FIG.
(42c, 42d), positioning stoppers 41a, 41
It is an enlarged side view of b, 41c (41d, 41e, 41f).

12A is a diagram showing a wheel 11b shown in FIG.
And (b) is an enlarged front view.

FIG. 13 is a schematic side view showing a conventional process of reversing a large plate (panel) using an overhead crane, in which the large plate shown in (a) is in the posture shown in (b), (c) and (d). Through,
The erect posture shown in FIG.

FIG. 14 is a schematic side view showing a conventional panel inversion process using a pair of opening and closing tables A and B, wherein the panel shown in FIG. 14A is shown in FIGS. After the posture shown in FIG.

[Explanation of symbols]

1: Table 6, 7:
Portal frame 10: Panels 11a to 11
d: wheels 12a, 12b: rails 13a, 13
b: Rotary shaft 14a-14d: Hydraulic cylinder 15a-15
d: Wheel axle 21: Roller conveyor 21ma-21me: Roller conveyor drive motor 22a-22e: Roller conveyor drive line 31: Lifting table 32a-32
d: bearing 33: hoist 33m: elevating motor 41a-41f: positioning stopper 41as-41fs: positioning stopper moving hydraulic cylinder 41ac-41fc: positioning stopper rotating shaft 42a-42d: clamp 42as-42ds: clamp moving hydraulic cylinder 42ac- 42dc: Clamp rotation axis

Claims (5)

[Claims] 1. A pair of tables which are opposed to each other and are integrally joined with a small space for receiving a panel, and at least one end of which has an opening for inserting and removing a panel continuous with the space; A lifting and lowering table that supports the table so as to be rotatable about a rotating shaft extending therethrough; a lifting and lowering mechanism that drives the lifting and lowering table up and down; and a panel inserted into the table space from outside the end of the table. A panel reversing device comprising: a fixed transport table for removing the panel. 2. A pair of tables which are integrally joined to face each other to hold the panel; a lifting table which supports the table so as to be rotatable about a rotation axis extending in the y direction; A panel reversing device comprising: a lifting mechanism driven up and down; wheels at four corners of a table; and a pair of mutually parallel rails extending in the x direction for supporting the wheels below. 3. The panel reversing device according to claim 1, wherein the table includes a roller conveyor for supporting the panel and transporting the panel in the x direction. 4. The panel reversing device according to claim 1, wherein said table is provided with a clamp for preventing panel movement in a direction orthogonal to the panel support surface. 5. The table according to claim 1, wherein said table further comprises a stopper along a panel support surface for preventing panel movement in a direction perpendicular to said rotation axis. Panel reversing device.