JPS6343766A - Welding machine for plate - Google Patents

Abstract

PURPOSE:To eliminate a second passing of a cutting edge of a plate cutting part of a cutting machine and the eliminate a dead time of a returning stage of the machine by returning the cutting machine which is made to travel from an operator side to the opposite side of the operator to cut plates to the origin through the lower part of the plates after the plates are welded. CONSTITUTION:The tail end of the preceding plate 1 and the tip of the succeeding plate 2 are fixed by clampers 3, 5, 4 and 6 of the upper and lower parts and afterward, cut by the cutting machine. As to the cutting, round edges 7 and 19, 8 and 18 are coupled respectively and the cutting machine is made to travel from the operator side A to the opposite side B of the operator, by which each end part of the plates 1 and 2 is cut. After the cutting is finished, the cutting machine is turned and tilted by a cylinder 22 as shown by a double dotted chain line in figure. Afterward, a gap between the plates 1 and 2 is butted and then, the welding is performed by travelling a welding torch 14. After being joined and welded, the plates 1 and 2 are continuously passed to a subsequent stage and while the plates are passed, the cutting machine is returned to the operator side A through the lower part of the succeeding plate 2 being passed and a rotary-shear frame 20 rises and is provided for the next welding.

Description

[Detailed Description of the Invention] [Industrial Application Field] (1) Traveling in the width direction of a flat plate to connect the tail end of the leading plate, which is the leading flat plate, and the tip of the trailing plate, which is the trailing flat plate. A cutting machine having two pairs of upper and lower round blades that cut simultaneously,
A drive device for the cutting machine, upper and lower clampers configured to tighten the vicinity of the cutting and welding parts during cutting and welding, and to butt each other, and the leading plate and the trailing plate. The cutting machine is equipped with a welding torch configured to be movable along the butt line so that welding can be performed with the cut lines of the upper and lower clampers butting together, and the cutting machine cuts the bottom of the welded flat plate. A flat plate welding machine characterized by being configured to pass through the welding machine and return to its origin.

(2) The cutting device includes a chassaddle installed below the flat plate and running along the weld line of the flat plate, and two pairs of rotating round blades supported and rotatably attached to the chassaddle. When cutting, the rotary shear frame is supported so that the round blade cuts the flat plate, and when returning to the origin, the rotary shear frame is rotated so that the rotary shear frame does not come into contact with the flat plate or other parts. A flat plate welding machine according to claim 1, further comprising a shaft frame holding device for rotating and tilting the flat plate downward.

3. Detailed Description of the Invention [Field of Industrial Application] This invention is a flat plate welding machine, for example, for welding a leading plate that is a leading flat plate and a trailing plate that is a following flat plate in a steel process line, etc. This relates to a flat plate welding machine for continuous welding.

[Conventional technology]

FIG. 6 is a front view of an example of a conventional flat plate welding machine disclosed in, for example, Japanese Patent Publication No. 48-56813, and FIGS. 7 and 8 are sectional views of the main parts thereof.

In the figure, reference numeral (1) is the leading plate, the left-hand plate, and (2) is the trailing plate, which is the trailing plate.

The leading plate (1) is the upper clamper (3) and the lower clamper 4)
It is tightened by. Similarly, the trailing plate (2) is tightened by an upper clamper (5) and a lower clamper (6). The upper clamper (5) has cylinders (6a) and (6b)
), and when raised, it forms a passageway for the flat plate (IO2), and when lowered, it tightens the flat plate (j) (2).

Similarly, the upper clamper (5) is a cylinder (sa) (sb
)I is raised and lowered accordingly. (7) (8) is a round blade, which is paired with straight blades (9 and 10) to form a cutting machine that cuts the tail end of the leading board (1) and the tip of the trailing board (2). . Round blade (
7) (8) is driven in the plate width direction by a drive screw (11). (12) is the drive motor for the drive screw (11), (16) is the round blade (7) (8) and torch C14)
This is a travel guide rail. (14) is an m-joint torch that applies heat to the abutting surfaces of the end of the leading plate (1) and the tip of the trailing plate (2) to perform welding. (15) is a welding torch (14
) for driving in the board width direction, and (16) is a drive motor connected to the drive screw (15). (1
7) is a back bar to prevent burn-through of the welded part, and during welding, it is placed between the leading plate (1) and trailing plate (2), which are the materials to be welded, on the opposite side of the welding torch (14). Placed.

Next, the operation of the above-mentioned conventional device will be explained.

The tail end of the leading plate (1) and the tip of the trailing plate (2) are straight blades (
9) Stop between (10).

Next, as shown in FIG.
) are tightened with the leading plate (1) and trailing plate (2) between the cylinders (Ma) (5b) (5a) (5b) and the lower clamps (4) and (f6), respectively.

The round blades (7) and (8) are guided by the straight blades (9) and (1o), and are connected to a drive screw (11) connected to a drive motor (12).
) from one end to the other, the flat plate (f) (
2), the caudal end of the leading plate (1) and the tip of the trailing plate (2) are simultaneously cut. The fit between the upper and lower blades is usually set to about IQ% of the minimum thickness of the material to be cut, so they must always be engaged. This is because, if a mechanism is provided to open and close the upper and lower blades, the cutting edges of the upper and lower blades will collide with each other when the upper and lower blades are closed, resulting in a problem where the clearance of the upper and lower blades is small, causing the blade to chip.

The welding torch (14) has a circular blade (7) (8) that runs in a direction across the width of the plate so that the operator can check the welding status and rub it. The standby position is on the side B opposite to the operator from the bath welding torch (14), and the round blade (71 (8) runs across the width of the board from the side B opposite the operator to cut. After completion, before welding, use a round blade (
7) (81 requires a process of returning from the operator side A to the non-operator side B to the original position. This is because after welding, the flat plates (1) and (2) can be returned to their original positions without cutting them. This is because the round blade (7) cannot be returned to its original position.
(Since the position 81 does not know which direction it will move by the clearance with the 1M blades (9) and (10), the previously cut cut is recut, which worsens the butting accuracy in the subsequent process.

Next, as shown in Fig. 6, the upper and lower clampers (6) (4
) and the upper and lower clampers (5) (6) in the butt direction,
The tail end of the leading plate (1) and the trailing plate (2) are moved by 1/2 of the distance between the straight blades (9) and (10), respectively.
butt the ends of the

Next, the back bar (17) moves up between the straight blades (9) and (10) to weld the leading plate (1) and trailing plate (2), which are the materials to be welded.
) and the upper clampers (3) and (5).

Next, the welding torch (14) is moved to the preceding plate (
1) and the trailing plate (2), traveling from the operator side A to the anti-operator side B to weld. Travel is driven by a drive motor (
16) by means of a drive screw (15) connected to the drive screw (16). Although not shown in the figure, the heat source is a separate welding power source that supplies power to the welding torch (14) via a cable.

After welding is completed in this way, the upper clamper (3)
(5) is cylinder (5a) (xb) (5aX5b)
The welded flat plate (1 (2)) is raised and the plate (IO2) starts passing through.

Furthermore, during sheet threading, the welding machine returns the clampers and welding torch to their original positions in preparation for the next weld.

[Problem that the invention seeks to solve]

Since the conventional flat plate welding machine is configured as described above, the round blade must return to its original position after cutting is completed and prior to welding. This is because after welding is completed, the leading plate (1) and trailing plate (2) will be cut again. For this reason, there is a problem that the overall welding connection time becomes longer.Also, when the round blade (7H8) returns to its original position, the cutting blade passes through the cutting part again, resulting in poor cutting accuracy. There were also other problems.

This invention was made to solve the above-mentioned problems, and eliminates the need for the cutting blade to pass through the cutting section again, and also eliminates wasted time in the process of returning the round blade to its original position. The purpose is to obtain a welding machine for flat plates.

[Means for solving problems]

This flat plate welding machine according to the present invention has a cutting machine that cuts the tail end of the leading plate and the tip of the trailing plate prior to welding, and is kept on standby on the side of the welding medium length operator. After welding is completed, the welding device passes under the welded flat plate and returns to the origin on the operator's side.

[Effect]

The cutting machine in this invention cuts and positions the welding side ends of the leading plate and the trailing plate by running from the operator's side to the side opposite to the operator, and during welding, the cutting machine is kept on standby on the side opposite to the operator. This allows the welding torch to move from the operator's side to the opposite side during welding, making it easier to observe the welding situation. Return to the origin below the row plate without contacting the flat plate or other members.

Therefore, even if the flat plates are connected and in the sheet passing position, the flat plates and the cutting machine do not interfere with each other. That is, there is no need to return the cutting machine to its origin prior to welding, as is the case in the past.

〔Example〕

The present invention will be explained below based on the drawings showing one embodiment thereof.

In Figures WJ1 and 2, the symbol (18) is a round blade (8
) is paired with the lower round blade, (19) is the round blade (7)
(7) (8) (18
The round blade of X19) is attached to the rotary shear frame (20). Round blade (7) (8) (18Xj9)
has a structure that allows it to rotate freely around the center of each circle.

The rotary shaft frame (20) can be tilted about an axis (21) by means of a shaft frame support device, for example a cylinder (22). When the rotary shaft frame (20) is upright, the shaft (21) is supported by a shaft (23).
) The position of the rotary shaft frame (20) is regulated by the stopper (28) attached to the round blade (8
) and (18), (7) and (19) are almost perpendicular,
The protruding surface of the lower round blade (18x19) is the lower clamper (4)
(6) The relative position is almost the same height as the top surface.

'/-1f-+j-1-' The rule (26) guides the flat plates (1) and (2), which are the leading and trailing plates, using the guide rail (24) installed on the common base (29) as a guide. It is designed so that it can move in the horizontal direction. Chassador (
The running force of the cylinder (23) is obtained from the cylinder (25) installed on the common base (29).
) is fastened to the chassaddle (26).

Round blade (7) (8) (18X19), low crystal frame (20) shaft (21) cylinder (22) chasaddle (
26) When the cutting machine, which is composed of a stopper (28) and the like, moves from the operator side A to the anti-operator side B, the cutting machine
2) Cut off the tip and tail end.

The cut leading and trailing end scraps are inserted into a hole provided in the rotary shaft frame (20) and a chassis saddle (20).
6) is dropped to the bottom through the hole. Common Base (29
) A packet for receiving scraps is placed at the bottom.

When the cutting machine runs in an upright position, the welding torch (14)
The welding torch (14) is attached to the cylinder (
26). When welding, the welding torch (14) is attached to the guide (27a).
It has a structure in which it is lowered downward using (27b) as a guide.

In addition, codes other than the above (1) to (8L (14) to (17)
) are equivalent to those indicated by the same reference numerals in the conventional device.

Next, the operation of this embodiment will be explained.

The tail end of the leading plate (1) and the tip of the trailing plate (2) are connected to the second
As shown in the diagram, round blades (7) (19) and round blades (8) (18)
Stop between.

As shown in FIG. 6, the upper clamper (6) on the exit side of the leading plate (1) is lowered by the cylinders (5a) and (3b), and the leading plate (1) is moved between the upper clamper (3) and the lower clamper ( 4) Tighten with.

Further, the trailing plate (2) is similarly tightened by the upper clamper (5) and the lower clamper (6).

Next, as shown in FIG. 1 and FIG. Traveling is performed by the cylinder (25) using the guide rail (2) as a guide.

For cutting, the round blades (7) and (19) and (8) and (18) are paired, and each cuts the tail end of the leading plate (1) and the tip of the trailing plate (2) at the same time. do. Since the spacing between the round blades is constant, the cutting surfaces at the leading and trailing ends are precisely parallel.

The cut leading and trailing end scraps are discharged to the lower part of the common base (29) through holes in the rotary shear frame (20), the saddle (23), and the common base (29).

When cutting, use the upper and lower clampers (5) (4) (5) (6
), the leading plate (1) and trailing plate (2) are firmly fixed.

The cutting machine must travel to the side B opposite to the operator, therefore,
Complete cutting of each end of the leading board (1) and trailing board (2),
As shown by the two-dot chain line in Figure 1, the cylinder (22)
l It rotates and tilts.

Next, as shown in Figure 4, the upper and lower clampers (5) on the entry side
(6) moves a certain amount while tightening the trailing plate (2). By controlling this amount of movement, the butt gap between the tail end of the leading plate (1) and the leading end of the trailing plate (2) is controlled. Then, push up the back bar (17) and firmly tighten the butt portion between it and the upper clamper (5).

Next, the welding torch (14) travels along the butt line in the board width direction from the operator side A to the anti-operator side B to perform welding. At this time, since the cutting machine is not on the operator's side A, the operator has very good access to the welding torch (14) at the welding start position, which makes it possible to monitor the welding situation and also to 14) If the trouble occurs, it will be possible to respond immediately.

Next, as shown in Fig. 5, the leading plate (1) and the trailing plate (2
) are welded together, the upper clampers (6) and (5)
and rises to create a passageway. By this, the flat plate (I
O2) will be continuously passed through to the subsequent process.

During threading, the upper and lower clamper bodies (6) on the entry side return to their original positions, and the cutting machine passes under the trailing plate (2) during threading and returns to the operator side A. And rotary shaft frame (20)
stand up and prepare for the next weld. That is, since the cutting machine can return to its original position without cutting during sheet threading, the time required to stop sheet threading for the cutting machine to return can be omitted. When the cutting machine returns to its original position, the cutting surface does not come into contact with the round blade again, ensuring accuracy during cutting.

In addition, in the above embodiment, the rotary shaft frame (20)
was rotated and tilted and returned to the operator's side A in a state where it was retracted below the flat plate. However, without tilting it, the entire rotary shaft frame was moved up and down to avoid interference with the flat plate, etc., and the operator It may be returned to side A, and in this case also, the same effect as in the above embodiment can be achieved.

Further, in the above embodiments, arc welding has been described, but laser welding may also be used, and in this case, the same effects as in the above embodiments can be obtained.

〔Effect of the invention〕

As described above, according to the present invention, the cutting machine is constructed so that it can pass under the welded flat plate and return to the origin, so that it can return to the origin while passing the plate. Of the time it takes to connect flat plates, the time required for the cutting machine to return to its origin can be eliminated, reducing the overall time. Also, when the cutting machine returns to the standby position, there is no negative effect on the accuracy of the cut surface, and Since the cutting machine can be kept on standby on the side opposite to the operator during welding, it is possible to obtain a flat plate welding machine that makes it easier to check the welding status.

[Brief explanation of drawings]

Fig. 1 is a schematic front view of one embodiment of the present invention, Fig. 2 is an explanatory cross-sectional view of the main part during cutting in Fig. 1, and Figs. 3, 4, and 5 are during tightening as shown in Fig. 1. , an explanatory diagram of operations during welding and sheet threading, Fig. 6 a front view of an example of a conventional flat plate welding machine, Fig. 7
This figure and FIG. 8 are explanatory diagrams of operations during cutting and welding in FIG. 6. (1) Leading plate (flat plate), (2) Trailing plate (flat plate)
, (5) (5)... Upper clamper, (4) (6)... Lower clamper, (7) (B) (18) (19)... Round blade, (14)... Welding torch, (20 )...Rotary Shaft Frame, (22)...Share Frame Holding Bag [(Cylinder), (2')...Shasador. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] [Industrial Application Field] (1) Traveling in the width direction of a flat plate, simultaneously touching the tail end of the leading plate, which is the leading flat plate, and the tip of the trailing plate, which is the trailing flat plate. A cutting machine having two pairs of upper and lower round blades for cutting, respectively;
A drive device for the cutting machine, upper and lower clampers configured to tighten the vicinity of the cutting and welding parts during cutting and welding, and to butt each other, and the leading plate and the trailing plate. The cutting machine is equipped with a welding torch configured to be movable along the butt line so that welding can be performed with the cut lines of the upper and lower clampers butting together, and the cutting machine cuts the bottom of the welded flat plate. A flat plate welding machine characterized by being configured to pass through the welding machine and return to its origin. (2) The cutting device includes a shear saddle that is provided below the flat plate and runs along the weld line of the flat plate, and two pairs of rotating round blades that are supported and rotatably attached to the shear saddle. The rotary shear frame supports the rotary shear frame so that the round blade cuts the flat plate during cutting, and rotates the rotary shear frame when returning to the origin to prevent the rotary shear frame from coming into contact with the flat plate or other parts. A flat plate welding machine according to claim 1, further comprising a shear frame holding device for rotating and tilting the flat plate below the flat plate.