JP3361683B2 - Method and apparatus for manufacturing metal cylinder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing method and apparatus for manufacturing a cylinder from a thin metal plate such as a water tank installed on the roof of a building.

[0002]

2. Description of the Related Art When manufacturing a large-diameter metal cylinder such as a water tank installed on the roof of a building, iron plates having a thickness of about 0.6 mm are welded together to form a plate having a required width. After being bent into a cylindrical shape by a roll forming machine, the butted portion is welded again to manufacture a cylinder.

At this time, generally, Japanese Patent Laid-Open No. 6-19834 is used.
A bending apparatus as disclosed in Japanese Patent No. 8 and an automatic welding apparatus are separately installed, and the apparatuses are manually transported.

[0004]

Therefore, since it is necessary to install a welding device and a bending device, not only the installation space of the device becomes large, but also the storage location of the semi-finished product bent into a cylindrical shape. Is required, which reduces space efficiency in the factory. In addition, since it is necessary to convey each device, work efficiency is lowered.

In view of the above circumstances, an object of the present invention is to enable bending and welding of a metal plate with a single apparatus to eliminate the generation of semi-finished products, to improve space efficiency in a factory and work efficiency. It is an object of the present invention to provide a method for manufacturing a metal cylinder and an apparatus for the same, which are improved.

[0006]

To achieve the above object, in the first aspect of the present invention, a plurality of metal plates having a predetermined size are sequentially butted in the width direction so that the butted position is the welding position. To feed the metal plate at the butt position and repeat the feed and welding,
Guide the tip of the welded metal plate toward the welding position through the position above the welding position, join a specified number of metal plates, and then butt weld the leading and trailing ends of the joined metal plates at the welding position to form a metal cylinder. To form.

In the second aspect of the invention, the metal plates sequentially fed by the carry-in unit are fed by a predetermined amount in the feed direction so that the leading ends reach the joining position, and the metal plates are fed in a butt state by the fixed unit. Fix the vicinity of each butted part of the plate, weld the metal plates that are butted by the welding unit, and weld the metal plates that are welded and pushed by the transport unit through the pair of inner and outer guides above the welding position. While guiding to the position, the stopper stops the tip of the conveyed metal plate at a predetermined position, holds the side edge of the metal plate with a butt unit, and moves the tip to the welding position for welding. By doing so, a metal cylinder was formed, and the completed metal cylinder was carried out by the carry-out unit.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, reference numeral 1 denotes a base, and a pair of T grooves 1a are formed on the upper surface of the base at a predetermined interval. Reference numeral 2 denotes a back presser, which is arranged on the upper surface of the base 1 so as to be located between the T grooves 1a. Reference numeral 3 is a cylinder, which is a base 1 in the T groove 1a.
A plurality of them are arranged at a predetermined interval in the longitudinal direction. Reference numeral 4 denotes a roller, which is arranged so as to be able to move up and down in the T groove 1a and is supported by the cylinder 3 respectively. And cylinder 3
Is operated to cause the roller 4 to project from the base 1 to form a roller conveyor.

As shown in FIGS. 1 and 2, the carry-in unit is constructed as follows. Reference numeral 5 denotes a stage, which is supported by the column 6 so that its upper surface is at the same height as the upper surface of the base 1 and has a plurality of grooves (not shown) in a direction orthogonal to the base 1. A cylinder 7 is supported on the lower surface of the stage 5. Reference numeral 8 denotes a hook that movably penetrates through the groove, is connected by a connecting plate 9, and is connected to the cylinder 7. A cylinder 10 is supported by the connecting plate 9. A pad 11 is supported by the cylinder 10 so as to face one end of the hook 8.
A bearing 12 is fixed to the upper surface of the stage 5 at a predetermined interval. A shaft 13 is rotatably supported by the bearing 12. A roller 14 is fixed to the shaft 13.

A frame 15 is fixed to one end of the base 1. Reference numeral 16 denotes a guide, which is fixed to the frame 15 so that the lower surface forms a predetermined distance (about 1 or 5 times the thickness of the plate material used for the cylinder) from the upper surface of the stage 5. Therefore, it is possible to prevent the plate materials from overlapping each other when the plate materials are carried in.

As shown in FIGS. 1 and 4, the fixed unit is constructed as follows. 17 is a frame,
One end is fixed to the frame 15. A plate 18 is fixed to the frame 17. Reference numeral 19 is a clamp plate, one end of which faces the back pressing plate 2,
The other end is rotatably supported by the plate 18 via a shaft 20. Reference numeral 21 denotes a spring, which is mounted between the plate 18 and the clamp plate 19 so that the clamp plate 19 is pulled up to the plate 18 side. A pressure tube 22 is mounted between the plate 18 and the clamp plate 19 and is connected to a compressed air supply source.
Therefore, when the compressed air is supplied to the pressurizing tube 22, the loaded plate material can be pressed against the back presser plate 2.

As shown in FIGS. 1 to 3, the welding unit is constructed as follows. 23 is a frame,
One end is fixed to the frame 15 and is supported by the frame 17 via a plate 24. 25 is a rail,
It is fixed to the frame 23 at a predetermined interval. Reference numeral 26 is a rack, which is positioned between the rails 25 so that the frame 23
It is fixed to. A slider 27 is movably supported on the rail 25. 28 is a servo motor, which is supported by the slider 27. A pinion that meshes with the rack 26 is provided on the shaft of the servo motor 28.
The slider 27 is moved to the rail 2 by the operation of the servo motor 28.
It is designed to move along 5. A guide 29 is fixed to the slider 27. An elevating plate 30 is movably supported by the guide 29. Three
Reference numeral 1 denotes a cylinder, which is supported by a guide 29 and moves an elevating plate 30. A welding torch 32 is supported by the elevating plate 30 and is connected to an automatic welding machine (not shown).

A bracket 33 is fixed to the slider 27. Reference numeral 34 denotes a hook, which is supported by the bracket 33 so as to be able to move up and down. A cylinder 35 is supported by the bracket 33 and moves the hook 34.

Reference numeral 36 denotes a frame, one end of which is fixed to the frame 15. An outer guide 37 is supported by the frame 36 and has one end fixed to the frame 1,
The other end is fixed to the guide 16. 38 is a beam,
One end thereof is fixed to the frame 15. An inner guide 39 is fixed to the beam 38 so as to be spaced apart from the outer guide 37 by a predetermined distance. A guide 40 is fixed to the outer guide 37.

As shown in FIGS. 1 and 5, the butt unit is constructed as follows. A bracket 41 is fixed to the guide 16. 42 is a cylinder,
One end is swingably supported by the bracket 41. Four
A clamper 3 is slidably fitted to the guide 40 and rotatably coupled to one end of the cylinder 42. 44
Is a cylinder and is supported by the clamper 43. A pad 45 is supported by the cylinder 44 so as to face one end of the clamper 43.

Reference numeral 46 denotes a revolving base, which is rotatably supported by the guide 16 and driven by a drive mechanism (not shown).
Reference numeral 42 denotes a cylinder, one end of which is supported by a slide base 46 so as to be swingable. Reference numeral 43 denotes a clamper, which is rotatably connected to a bearing 47 slidably supported by a guide 40 and rotatably connected to one end of a cylinder 42. The shaft center of the joint portion between the bearing 47 and the clamper 43 is configured to coincide with the swivel axis of the swivel base 46 when the bearing 47 moves to its lower end. A cylinder 44 is supported by the clamper 43. Reference numeral 45 denotes a pad, which is arranged so as to face one end of the clamper 43,
It is supported by 4.

A cylinder 48 is fixed to the frame 17. A stopper 49 is supported by the cylinder 48.

With such a structure, the cylinder 7 is operated and the hook 8 is moved to the moving end on the right side in FIG. Figure 6
As shown in (A), it was cut to a predetermined size so as to be located between the stage 5 and the roller 14 (diameter: 1000 m).
When a cylinder of m is formed by three plate materials, the width is 117
Use a 4 mm plate. ) The first plate material 50 is supplied.

Then, the cylinder 7 is operated and the hook 8
Is moved to the guide 16 side, the plate material 5 is
It is possible to push 0 between the stage 5 and the guide 16. At this time, when the hook 8 moves to the moving end on the guide side, the tip of the plate member 50 is positioned between the back presser plate 2 and the welding torch 32.

Again, the cylinder 7 is operated to move the hook 8 to the moving end on the right side in FIG. The second plate member 50 is supplied so as to be located between the stage 5 and the roller 14. Then, the cylinder 7 is operated and the hook 8 is moved to the guide 16 side. Then, as shown in FIG. 6B, it is possible to push the second plate member 50 between the stage 5 and the guide 16 by the hook 8.

At this time, at the tip of the second plate 50,
The rear end of the first plate member 50 is pushed, and the first plate member 50 is moved upward from the base 1 along the outer guide 37. When the hook 8 moves to the moving end on the guide side, the rear end of the first plate member 50 and the front end of the second plate member 50 are abutted against each other and between the back presser plate 2 and the welding torch 32. Be positioned at.

Then, compressed air is supplied to the pressurizing tube 22, one end of the clamp plate 19 is lowered, and the rear end of the first plate member 50 and the leading end of the second plate member 50 are fixed to the base 1. Then, the cylinder 31 operates, the tip of the welding torch 32 is lowered to a predetermined position, the automatic welding machine operates, and an arc is generated from the tip of the welding torch 32 to cause the arc of the first plate member 50. The rear end and the front end of the second plate member 50 are welded.

At this time, the motor 28 is operated to move the slider 27 and weld the entire abutting portion between the rear end of the first plate member 50 and the front end of the second plate member 50. When the welding is completed, the cylinder 31 operates and the welding torch 3
The tip of 2 is moved up to a predetermined position, and the motor 27 is operated to return the slider 27 to the initial position and stand by. Then, the compressed air in the pressure tube 22 is released into the atmosphere, and the plate material 50 is opened.

Again, the cylinder 7 is operated to move the hook 8 to the moving end on the right side in FIG. The third plate member 50 is supplied so as to be located between the stage 5 and the roller 14. Then, the cylinder 7 is operated and the hook 8 is moved to the guide 16 side. Then, as shown in FIG. 6C, the third plate member 50 can be pushed between the stage 5 and the guide 16 by the hook 8.

At this time, the rear end of the welded second plate member 50 is pushed by the tip of the third plate member 50 to move the first and second plate members 50 from the base 1 along the outer guide 37. Move it upwards. At this time, the first plate member 50 is
It passes through the top of the outer guide 37 and hangs down by its own weight and is supported by the inner guide 39. When the hook 8 moves to the moving end on the guide side, the rear end of the second plate member 50 and the front end of the third plate member 50 are abutted against each other, and between the back presser plate 2 and the welding torch 32. Be positioned at.

Then, compressed air is supplied to the pressure tube 22, one end of the clamp plate 19 is lowered, and the rear end of the second plate member 50 and the tip of the third plate member 50 are fixed to the base 1. Then, the automatic welding machine operates to generate an arc from the tip of the welding torch 32 and weld the rear end of the second plate material 50 and the tip of the third plate material 50. At this time, the motor 28 operates to move the slider 27 and weld the entire abutting portion of the rear end of the second plate member 50 and the front end of the third plate member 50. When the welding is completed, the motor 28 operates to return the slider 27 to the initial position and wait. Then, the compressed air in the pressure tube 22 is released into the atmosphere, and the plate material 50 is opened. The cylinder 48 is operated to move the stopper 49 to a position where it comes into contact with the outer guide 37.

Again, the cylinder 7 is operated to move the hook 8 to the moving end on the right side in FIG. The fourth plate material 50 is supplied so as to be located between the stage 5 and the roller 14. Then, the cylinder 7 is operated and the hook 8 is moved to the guide 16 side. Then, as shown in step 6 (D), the fourth plate member 50 can be pushed between the stage 5 and the guide 16 by the hook 8.

At this time, the rear ends of the three welded plate members 50 are pushed by the tip of the fourth plate member 50, and the first, second, and third plate members 50 are guided from the base 1 to the outer guide. 37
And move along the inner guide 39. The leading end of the first plate member 50 comes into contact with the stopper 49 to stop the movement. Further, when the hook 8 moves to the moving end on the guide side, the rear end of the third plate member 50 and the fourth plate member 50.
With the tips of the two pieces butted against each other,
And the welding torch 32.

Then, compressed air is supplied to the pressurizing tube 22 on the side opposite to the rear end of the third plate member 50, one end of the clamp plate 19 is lowered, and the rear end of the third plate member 50 is used as a base. Fixed to 1. The cylinder 10 operates,
The hook 8 and the pad 11 sandwich the rear end of the fourth plate member 50. Then, the cylinder 7 is operated and the hook 8 is moved to the position shown in FIG.
Move to the moving end on the right side of. Then, the fourth plate 5
0 is drawn from between the stage 5 and the guide 16 so as to be located between the stage 5 and the roller 14.

Then, the cylinder 44 operates and the clamper 43 and the pad 11 sandwich the rear end portion of the first plate member 50. The cylinder 48 operates to move the stopper 49 away from the outer guide 37. The cylinder 42 operates to lower the clamper 43 along the guide 40. Then,
As shown in FIG. 6E, the front end of the first plate member 50 moves along the outer guide 37 and the base 1, and is brought into abutment with the rear end of the third plate member 50. Compressed air is supplied to the pressure tube 22 on the side opposite to the front end of the first plate member 50, one end of the clamp plate 19 is lowered, and the front end of the first plate member 50 is fixed to the base 1.

At the same time, the cylinder 44 operates to release the first plate member 50, and the cylinder 42 operates to move the clamper 43 to the lower end. Then, the automatic welding machine operates to generate an arc from the tip of the welding torch 32 and weld the rear end of the third plate material 50 and the tip of the first plate material 50. At this time, the motor 28 operates to move the slider 27 and weld the entire abutting portion of the rear end of the third plate member 50 and the front end of the first plate member 50 to form a cylinder.

When the welding is completed, the cylinder 31 is actuated to raise the welding torch 32, and the slider 27 stands by at that position. Then, the compressed air in the pressure tube 22 is released into the atmosphere, and the plate material 50 is opened. At the same time, the cylinder 31 operates to raise the tip of the welding torch 32 to a predetermined position. Further, the swivel base 46 operates to move the clamper 43 to the outer position of the outer guide 37 apart from the formed cylinder.

The cylinder 35 is actuated and the hook 34 is moved to 3
The plate member 50 is lifted to a position facing the end face of the cylinder formed by welding. At the same time, the cylinder 3 operates to cause the roller 4 to project above the base 1, and the roller 4 causes the cylinder to float above the base 1. Then, the motor 28 is operated to move the slider 27 to the welding start position side.
Then, the cylinder pushed by the hook 34 moves on the roller 4 and is discharged to the outside of the apparatus.

In this way, by consistently carrying out the supply of the plate 50 to the discharge of the cylinder, by eliminating the semi-finished product, the storage space becomes unnecessary,
In addition, since it is possible to eliminate extra transportation work, it is possible to efficiently manufacture the cylinder.

[0035]

As described above, according to the present invention, a plurality of metal plates having a predetermined size are sequentially butted in the width direction and are fed so that the butted position is located at the welding position.
Welding the abutting positions of the metal plates Repeating feeding and welding, guiding the tip of the welded metal plates through the upper part of the welding position toward the welding position, and after joining a prescribed number of metal plates, the joined metal plates A leading end and a trailing end of the metal sheet are butt-welded at a welding position to form a metal cylinder, and a feeding unit that feeds sequentially supplied metal plates by a predetermined amount so that the leading end reaches a joining position in the feed direction, A fixing unit that fixes the vicinity of the abutting portion of each metal plate of the metal plates sent in a butt state, a welding unit that welds the abutted metal plates, and a metal plate that is welded and pushed by the transport unit and transported. A pair of inner and outer guides which guide the above toward the welding position through above the welding position,
A stopper for stopping the tip of the conveyed metal plate at a predetermined position, a butting unit for holding the side end of the metal plate and moving the tip to the welding position, and a carry-out unit for carrying out the completed metal cylinder. Since it is provided, it is possible to consistently perform from the supply of the plate to the discharge of the cylinder, and by eliminating the semi-finished product, the storage space is unnecessary and the extra transportation work can be eliminated. Therefore, the cylinder can be efficiently manufactured.

[Brief description of drawings]

FIG. 1 is a front view of an apparatus for manufacturing a metal cylinder according to the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a side sectional view of FIG.

FIG. 4 is an enlarged front view of a clamp plate.

FIG. 5 is a process drawing showing a step of abutting plate materials when forming a cylinder.

FIG. 6 is a process drawing showing a manufacturing process of a cylinder.

[Explanation of symbols]

1 base, 2 back presser plate, 3 cylinders, 4 rollers, 5 stages, 6 columns, 7 cylinders, 8 hooks, 9 connecting plates, 10 cylinders, 11 pads, 12
Bearing 13 shafts, 14 rollers, 15 frames, 16 guides, 17 frames, 18
Plate, 19 clamp plate, 20
Shaft, 21 spring, 22 pressure tube, 23
Frame, 24 plates, 25 rails, 26 racks, 27 sliders, 28
Servo motor, 29 guide, 30 lifting plate, 31 cylinder, 32 torch, 33
Bracket, 34 hook, 35 cylinder, 36 frame, 37 outer guide, 3
8 beams, 39 inner guides, 40 guides, 41 brackets, 42 cylinders, 43
Clamper, 44 cylinder, 45 pad, 46 slide, 47 frame, 48
Cylinder, 49 stopper, 50 plate material.

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI B21D 5/01 B21D 5/01 R B23K 9/00 501 B23K 9/00 501L 501P 37/00 37/00 F 37/04 37 / 04 D 37/053 37/053 C (56) Reference JP-A-6-198348 (JP, A) JP-A-3-57591 (JP, A) JP-A-54-127863 (JP, A) 62-92091 (JP, U) Actually developed 60-38689 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B23K 9/025 B21C 37/08 B21C 37/083 B21C 37 / 14 B21D 5/01 B23K 9/00 B23K 37/00 B23K 37/04 B23K 37/053

Claims (2)

(57) [Claims] 1. A plurality of metal plates having a predetermined size are sequentially butted against each other in the width direction and fed so that the butted position is located at a welding position, and feeding and welding for welding the butted position of the metal plates are repeated, and Guide the tip of the welded metal plate toward the welding position through the position above the welding position, join a specified number of metal plates, and then butt weld the leading and trailing ends of the joined metal plates at the welding position to form a metal cylinder. A method of manufacturing a metal cylinder, comprising: 2. A carrying-in unit for feeding a predetermined amount of sequentially supplied metal plates in the feed direction so that the leading end reaches a joining position, and a vicinity of a butting portion of each metal plate of the metal plates fed in a butting state. A fixing unit for fixing, a welding unit for welding the abutted metal plates, and a pair of inner and outer guides for guiding the metal plate that is welded and pushed by the transport unit toward the welding position through above the welding position. A stopper for stopping the tip of the conveyed metal plate at a predetermined position, a butting unit for holding the side end of the metal plate and moving the tip to the welding position, and a carry-out unit for carrying out the completed metal cylinder An apparatus for manufacturing a metal cylinder, which is provided with.