JPH0622753B2 - Flat plate welding machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a flat plate welding machine, for example, a leading plate which is a leading flat plate and a trailing plate which is a trailing flat plate in a steel process line or the like. The present invention relates to a flat plate welding machine for continuous production.

[Conventional technology]

FIG. 6 is a front view of an example of a conventional flat plate welding machine disclosed in, for example, Japanese Examined Patent Publication No. 48-36813, and FIGS. 7 and 8 are sectional views of the main part thereof.

In the figure, reference numeral (1) is a leading plate that is a leading flat plate, and (2) is a trailing plate that is a trailing flat plate. The leading plate (1) is clamped by the upper clamper (3) and the lower clamper (4). Similarly, the trailing plate (2) is tightened by the upper clamper (5) and the lower clamper (6). Upper clamper (3)
Is moved up and down by the cylinders (3a) and (3b), forms a passage for the flat plates (1) and (2) when it rises, and tightens the flat plates (1) and (2) when it descends. The upper clamper (5) is likewise moved up and down by the cylinders (5a) (5b). (7) (8) are round blades, straight blades
(9) Paired with (10), the tail end of the leading plate (1) and the trailing plate (2)
It becomes a cutting machine that cuts the tip of the. The round blades (7) and (8) are driven in the plate width direction by the drive screw (11). (12) is a drive screw
The drive motor of (11), (13) is a round blade (7) (8) and torch (1
This is the guide rail for 4). (14) is a welding torch, and heat is applied to the abutting surfaces of the tail end of the leading plate (1) and the leading end of the trailing plate (2) to perform welding. Reference numeral (15) is a drive screw for driving the welding torch (14) in the plate width direction, and (16) is a drive motor connected to the drive screw (15). (17) is a back bar to prevent burn-through of the welded part, and the preceding plate that is the material to be welded during welding (1)
And the trailing plate (2) between them and the welding torch (14).

Next, the operation of the above conventional device will be described.

The trailing edge of the leading plate (1) and the leading edge of the trailing plate (2) are straight blades (9) (10).
Stop in between.

Then, as shown in FIG. 7, lower the upper clamper (3) (5) with the cylinders (3a) (3b) (5a) (5b), and pull it down between the lower clamps (4) (6). Tighten the leading plate (1) and the trailing plate (2).

Round blades (7) (8) guide the straight blades (9) (10) as guide motors.
Drive plate (11) connected to (12) leads the leading plate by traversing the flat plates (1) and (2) from one end to the other.
Cut the tail end of (1) and the tip of the trailing plate (2) at the same time. The fitting of the upper and lower blades is usually set to about 10% of the minimum plate thickness of the material to be cut, so that it is necessary to always engage them. This is because, if a mechanism for opening and closing the upper and lower blades is attached, the clearance of the upper and lower blades is small, so that the cutting blades of the upper and lower blades collide with each other when they are closed, causing a problem of chipping.

The welding torch (14) has a circular blade (7) (8) waiting position for welding in order to make it easy for the operator to check the welding status and to run in a direction across the plate width from the operator side A. The side opposite to the torch (14) is the operator side B, and the round blades (7), (8) travel from the opposite operator side B in the direction crossing the plate width to cut, and after the completion of cutting, prior to welding. The round blades (7) and (8) require a step of returning from the operator side A to the original position on the counter operator side B. because,
This is because the flat plates (1) and (2) cannot be returned to their original positions without being cut after welding. Also, when returning to the original position,
Since it is not known which of the positions (7) and (8) will move by the clearance corresponding to the straight blades (9) and (10), the cut end cut earlier is re-cut to deteriorate the butt accuracy in the subsequent process.

Next, as shown in FIG. 6, the upper and lower clampers (3) and (4) and the upper and lower clampers (5) and (6) are aligned in the abutting direction with straight blades (9) and (10).
The tail end of the leading plate (1) and the leading end of the trailing plate (2) are brought into contact with each other by moving by 1/2 of the distance between them.

Then, the back bar (17) rises between the straight blades (9) and (10), and the leading plate (1) and the trailing plate (2), which are the materials to be welded, are clamped to the upper clamper (3) (5). Tighten up with.

Next, the welding torch (14) travels from the operator side A to the anti-operator side B on the butt line of the leading plate (1) and the trailing plate (2), which are the materials to be welded, and welds them. Travel is performed by a drive screw (15) connected to a drive motor (16). Although not shown in the figure, the heat source is supplied by a cable from a separately installed welding power source to the welding torch (14).

After the welding is completed in this way, the upper clamper (3) (5)
Is raised by the cylinders (3a) (3b) (5a) (5b) and made with the passage passages of the welded flat plates (1) and (2), and the flat plates (1) and (2) start passing.

The welding machine returns the original positions to the clampers and the welding torch during the next welding preparation.

[Problems to be solved by the invention]

Since the conventional flat plate welding machine is configured as described above, the round blade must be returned to its original position after the completion of cutting and prior to welding. This is because the leading plate (1) and the trailing plate (2) will be cut again after the welding is completed. For this reason, there is a problem that the entire welding connection time becomes long, and when the round blades (7) (8) return to their original positions, the cutting blades pass through the cutting portion again, so the cutting accuracy There were also problems such as the deterioration.

Further, for example, Japanese Patent Publication No. 50-19503 discloses a welding device having an upper blade and a lower blade, each of which is a straight blade, in which the upper blade holder moves below the flat plate after cutting the flat plate. However, since this type uses a straight blade, it requires a large cutting force compared to a round blade and requires an upper blade that is longer than the width of the flat plate. There was a problem that it became heavy as well as shaped. In addition, the upper blade holder that has moved below the flat plate after cutting cannot return to its original position until the flat plate after welding has completely passed through, and as a result, the overall time becomes longer. It was

The present invention has been made to solve the above problems, and eliminates the passage of the cutting blade again at the cutting portion, and can eliminate the dead time of the returning process of the round blade to the original position. The purpose is to obtain a flat plate welding machine.

[Means for solving problems]

The flat plate welding machine according to the present invention keeps the cutting machine, which cuts the tail end of the leading plate and the leading end of the trailing plate prior to welding, on the operator side during welding and after welding is completed. It is configured to return to the origin of the operator through the lower side of the flat plate.

[Action]

The cutting machine according to the present invention cuts and positions the welding side end portions of the leading plate and the trailing plate by running from the operator side to the counter operator side, and makes the counter operator side stand by as it is during welding. Thus, during welding, welding can be performed while the welding torch moves from the operator side to the anti-operator side, and the welding situation can be easily observed. Return to the origin below the row plate without touching the flat plate and other members. Therefore, the flat plate and the cutting machine do not interfere with each other even when the flat plates are connected and are in the threading position. That is, unlike the conventional case, it is not necessary to return the cutting machine to the origin prior to welding.

〔Example〕

The present invention will be described below with reference to the drawings showing an embodiment thereof.

1 and 2, reference numeral (18) is a lower round blade paired with the round blade (8), (19) is a lower round blade paired with the round blade (7), The round blades of (7), (8), (18) and (19) are attached to the rotary shear frame (20). Round blade (7) (8) (18) (1
9) has a structure that can freely rotate around the center of each circle.

The rotary shear frame (20) can be tilted about a shaft (21) by means of a shear frame support device such as a cylinder (22). If the rotary frame (20) is upright,
The position of the rotary shear frame (20) is restricted by the stopper (28) attached to the shear saddle (23) supporting the (21), and the round blades (8) and (18), (7) and (19) are regulated. Is almost vertical, and the top surfaces of the lower round blades (18) and (19) are located at the same height as the upper surfaces of the lower clampers (4) and (6).

The shear saddle (23) uses the guide rail (24) installed on the common base (29) as a guide to guide the leading and trailing plates.
It can move in the direction that crosses (1) and (2). The rod tip of the cylinder (25) is fastened to the shear saddle (23) so that the traveling force of the shear saddle (23) can be obtained from the cylinder (25) installed on the common base (29).

Round blades (7) (8) (18) (19), rotary frame (20) axis (21)
The cutting machine composed of the cylinder (22), shear saddle (23), stopper (28), etc. cuts the tip and tail ends of the flat plates (1) and (2) when traveling from the operator side A to the non-operator side B. To do.

The scrap at the tip end is a rotary frame
It is dropped through the hole provided in (20) and the hole of shear saddle (23). At the bottom of the common base (29), a bucket for scrap is arranged.

The welding torch (14) is pulled upward by the cylinder (26) so as not to interfere with the welding torch (14) when the cutting machine runs in the upright state. When welding is performed, the welding torch (14) has a structure in which the guides (27a) and (27b) are guided downward.

Note that the reference numerals (1) to (8) and (14) to (17) other than the above are equivalent to those indicated by the same reference numerals in the conventional device.

Next, the operation of this embodiment will be described.

The tail end of the leading plate (1) and the leading end of the trailing plate (2) stop between the round blades (7) (19) and the round blades (8) (18) as shown in FIG.

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

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

Next, as shown in FIG. 1 and FIG. 2, the cutting machine waiting on the operator side A runs to the counter operator side B. The traveling is performed by the cylinder (25) using the guide rail (24) as a guide.

For cutting, round blades (7) and (19), (8) and (18) are paired,
In each case, the tail end of the leading plate (1) and the leading end of the trailing plate (2) are cut at the same time. Since the intervals between the round blades are constant, the cutting planes at the tips are exactly parallel.

The scrap at the tip end is a rotary frame
It is discharged to the lower part of the common base (29) through the holes of (20), saddle (23) and common base (29).

When cutting, use the upper and lower clampers (3) (4) (5) (6)
(1) The trailing plate (2) is firmly fixed.

The cutting machine completes cutting of each end of the leading plate (1) and the trailing plate (2) by traveling to the side opposite to the operator B, and as shown by the two-dot chain line in FIG. It is rotated and tilted by the cylinder (22).

Next, as shown in FIG. 4, the upper and lower clampers (5) (6) on the entrance side
Moves a certain amount while tightening the trailing plate (2). By controlling this movement amount, the tail end of the leading plate (1) and the trailing plate
Control the butt gap with the tip of (2). Then, the back bar (17) is pushed up, and the butted portion is firmly tightened with the upper clampers (3) and (5).

Next, the welding torch (14) runs on the butt line in the plate width direction from the operator side A to the non-operator side B to perform welding. At this time, since the cutting machine is not on the operator side A, the operator is very close to the welding torch (14) at the welding start position, and the welding condition can be monitored and the welding torch can be monitored.
Even if trouble (14) occurs, it will be possible to immediately respond.

Next, as shown in FIG. 5, when the leading plate (1) and the trailing plate (2) are welded and connected, the upper clampers (3) and (5) rise,
Make a board passage. As a result, the flat plates (1) and (2) are continuously passed to the subsequent process.

The upper and lower clampers (5) (6) on the entry side return to their original positions while
The cutting machine returns to the operator side A under the trailing plate (2) in the passing plate. Then, the rotary shear frame (20) stands up to prepare for the next welding. That is, since the operation of the cutting machine to return to the original position without cutting can be performed during the threading, the time for stopping the threading for returning the cutting machine can be omitted. Further, when the cutting machine returns to the original position, the cutting surface does not come into contact with the round blade again, so that the accuracy at the time of cutting is secured.

Also, the upper and lower blades are round blades (7), (8), (18), (1
Since 9) is used, the cutting force is smaller than that of a straight blade, and it is compact regardless of the plate width, and the overall size and weight are reduced.

In the above embodiment, the operator side A is rotated with the rotary frame (20) tilted and retracted below the flat plate.
However, it may be returned to the operator side A by raising and lowering the entire rotary frame without tilting it so as not to interfere with a flat plate or the like.
The same effect as that of the above embodiment is obtained.

Further, in the above embodiment, the arc welding was described,
Laser welding may be used, and also in this case, the same effect as that of the above-described embodiment is obtained.

〔The invention's effect〕

As described above, the flat plate welding machine of the present invention is configured such that the cutting machine having the upper and lower two pairs of round blades is configured to return to the origin by passing under the welded flat plate, and thus the cutting is performed during the plate passing. The machine can be restored, and thus, the time required for connecting the flat plates can be eliminated, and the overall time can be shortened. Further, since the round blade is used, the cutting force is small, and the size is small irrespective of the plate width. Therefore, the whole size and weight can be reduced. Furthermore, when the cutting machine returns to the standby position, the accuracy of the cutting surface is not adversely affected, and the cutting machine can be kept on standby by the side opposite to the operator during welding, making it easier to check the welding status. Welding machine has the effect of being obtained.

[Brief description of drawings]

FIG. 1 is a schematic front view of an embodiment of the present invention, FIG. 2 is a cross-sectional explanatory view of an essential part of FIG. 1 during cutting, and FIGS. 3, 4, and 5 are tightening of FIG. , Operation explanatory view at the time of welding and passing, FIG. 6 Front view of an example of a conventional flat plate welding machine, FIG.
FIG. 8 and FIG. 8 are operation explanatory views at the time of cutting and welding in FIG. (1) …… Leading plate (flat plate), (2) …… Trailing plate (flat plate), (3)
(5) …… Upper clamper, (4) (6) …… Lower clamper, (7)
(8) (18) (19) …… Round blade, (14) …… Welding torch, (20) ……
Rotary shear frame, (22) ... shear frame holding device (cylinder), (23) ... shear saddle. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Claims] 1. A shear saddle provided below a flat plate and reciprocating along the width direction of the flat plate, a rotary shear frame rotatably attached to the shear saddle, and a tail end of a preceding plate supported by the rotary shear frame. And a pair of upper and lower round blades for simultaneously cutting the leading end of the trailing plate and the rotary shear frame so that the round blades cut the flat plate when cutting, and the rotary shear frame is used for returning to the origin. A cutting machine that has a shear frame holding device that pivots and tilts below the flat plate, and is configured to be able to tighten each other near the cutting and welding parts during cutting and welding and to butt each other. Butt so that welding can be performed with the upper and lower clampers being in contact with the cutting lines of the preceding and following plates with the upper and lower clampers. Flat welding machine, characterized in that it comprises a welding torch that is travelable configured along.