JPS60162582A - Automatic welding device - Google Patents

Abstract

PURPOSE:To execute simultaneously fillet welding to respective both surfaces of two plate bodies by providing a pair of welding torches to respectively a pair of heads of the 1st and 2nd welding machines. CONSTITUTION:The 1st and 2nd welding machines 10, 12 are inserted into a cylindrical vessel 1 to be welded and are adapted to fillet welding, etc. to many toric or arc-shaped plate bodies 2, 3, 4. The 1st welding machine 10 has a horizontal sliding unit. A pair of torches 13, 14 for CO2 arc welding are provided freely perpendicularly slidably and freely adjustably in angle to a pair of heads mounted freely horizontally slidably to said unit. A pair of heads are freely horizontally slidably provided similarly to the 2nd machine 12 and a pair of torches 15, 16 for CO2 arc welding are provided freely perpendicularly slidably and freely adjustably in angle ot a pair of said heads.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic welding device for fillet welding a tray support plate into a cylindrical container of an upright cylindrical rectification column.

[Prior art]

In general, an upright cylindrical rectification column is a cylindrical container (1.
), there are many tray supporting plates [2), +3)
, (4) are attached in multiple stages. The first group of plates (2) is completely annular as shown in FIG. 2(a), while the second group of plates (3) is as shown in FIG. 2(b). As shown, it has an arc shape close to a circular shape and has an opening (8a). Further, the eighth group of plates (4) consists of a pair of arcuate bodies separated by two openings (4a), as shown in FIG. 2(e). And each plate (2), (3), (4) is about 6 to 2
The arc-shaped plates of the second group and the eighth group +3) and (4) are the openings of each plate. The positions of parts (8a) and (4a) are 180° for each stage.
Or, it is shifted by a rotation angle of 90', that is, it is shifted so that every other row has the same orientation.

In this way, for the large number of plates (2J l (3) + (4)) attached in 9 stages in the cylindrical container (1), the corners shown as welded parts (5) in Fig. 3 are Conventionally, when performing flesh welding, a cover welding method has been applied, which requires complicated welding work and incidental work from a safety and health perspective, which is a factor that impedes improvement in efficiency.

[Purpose of the invention]

This invention enables efficient and safe welding at multiple locations within the cylindrical body by remote control when fillet welding tray support plates into the cylindrical vessel of an upright cylindrical rectification column. The purpose is to provide an automatic welding device that can

[Structure of the invention]

This invention is an automatic welding device for fillet welding a tray support plate into a cylindrical container of an upright cylindrical rectification column, and the present invention is applied to a tip of a manipulator beam that protrudes horizontally from a manipulator body and can be raised and lowered. A first welding machine is attached, and a pair of carbon dioxide gaff arc welding torches are attached to each pair of heads of the welding machine of the traveling platform 2, which is slidably provided on the manipulator beam and sinulides under control from the manipulator main body. The automatic welding apparatus is characterized in that a rotational drive motor is coupled to a turning roller on which a cylindrical body to be welded is placed lying through which the manipulator beam is inserted.

〔Effect of the invention〕

Therefore, according to the automatic welding apparatus of the present invention, in particular, a total of 4'' torches of the first and second welding machines can be used to
It is possible to perform fillet welding on each side of each plate at the same time, dramatically improving welding work efficiency, and it is also possible to slide both welders at the same time or separately by an arbitrary distance. Not only can the torch be used selectively, these can be selected by remote control, and it can be widely applied to various types of welding in the private part of the cylinder. moreover,
Coupled with the introduction of the carbon dioxide gaff arc welding method with a high surface area, there is the advantage that welding work and incidental work in terms of health and safety can be significantly reduced.

[Sudden example]

Next, this invention will be explained in detail with reference to the drawings from FIG. 4 showing one embodiment thereof.

In Figures 4 and 5, the column height is approximately 5.478
The manipulator main body (6) has an operation panel (7), a control lock (
8) and a manipulator beam (9).

The manipulator beam (9) with beam length FJttrm is:
It protrudes from the manipulator body (6) so as to be slidable in the horizontal direction, and can also be moved up and down in the vertical direction. A first welding machine 00 is attached to the tip of the manipulator beam (9), and a traveling trolley U is provided on the manipulator beam (9) for seven rides.
A second welding machine 0) is attached to υ.

First and second welding machines 01. (6) is inserted into a cylindrical container (1) as a cylindrical body to be welded, and a large number of annular or arc-shaped plates (2) are attached in advance to the inner peripheral surface of the container (1). , +3) and (4) are applied to fillet welding, etc. The first welding machine (IQ has a horizontal 7-ride unit as described below, and a pair of heads attached to the unit so that it can slide horizontally) has a pair of heads so that both sides can be welded simultaneously. A carbonate Ganu arc welding toe 03.a is provided so that it can be slid vertically and its angle can be adjusted freely.Also, in the second welding part (2), similarly to the above, a pair of heads are installed horizontally. A pair of carbon dioxide gaff arc welding torches αG and αQ are provided to the pair of heads so as to be vertically slidable and angle adjustable.

The first and second welding machines +10, (Ll each include a head horizontal movement mechanism, a torch vertical movement mechanism, and a torch angle adjustment mechanism as described above, as well as a welding head horizontal automatic tracing mechanism, a welding head vertical automatic tracing mechanism, Wire feeding mechanism, sensor for detecting welding start and end.

It is equipped with a rotary encoder for detecting the circumferential distance inside the cylinder to be welded, and a television camera for monitoring the welding position and arc condition.

The head horizontal movement mechanism and the torch vertical movement mechanism are configured as shown in FIG. A pair of vertical 7-ride units (18a) and (1sb), which are attached to the horizontal 7-ride unit Oη so as to be slidable in the horizontal direction, occupy positions close to each other before welding starts, and after welding is completed, they are positioned close to each other. Separate. In addition, a pair of heads (10B), (10b) are attached to a pair of vertical nullide units (18ax18b) so as to be freely nullable in the vertical direction, and a pair of torches 1, 13 attached thereto.
uΦ decreases before welding starts and increases after welding is completed.

In other words, a pair of torches (13, 04 are set in the proper position before welding starts, and after welding is completed, the welded plate (2)
Therefore, the pair of torches a3 + a41 will not interfere with the plate (2) during the process of moving the welding position to the next stage. The setting before the start of welding is performed by the operator, but after welding is completed, the movement is automatically controlled based on the welding end production signal. The moving speed of each torch in the horizontal direction can be set to about 121/min, and the moving distance can be set to about 10 cm. Also, the vertical movement speed is approximately 12CIχ/min, and the movement distance is approximately 20ff.
Can be set to These movements are linked to the nulling motion of the manipulator beam.

The Iu torch angle adjustment mechanism is constructed as shown in FIG. This is mainly applied when stack welding is performed, and the angle formed by each torch is changed every time one layer of welding is completed. Switching can be done in about 3 stages,
The adjustment angle θ relative to the welding center angle (45°) is approximately 20°.
can be done.

The welding head horizontal automatic tracing mechanism and the welding head vertical automatic tracing mechanism are constructed as shown in FIG. This is to maintain the proper horizontal and vertical positions of the fillet weld.The tip of the first tracing rod 4 is in contact with the surface of the plate to be welded (2), and the second tracing rod The tip of rod 1"4 comes into contact with the inner peripheral surface of the cylindrical container (1) to be welded. The horizontal adjustment range is approximately 5G, and the vertical adjustment range is approximately 7.5On.
It can be adjusted for each head.

The wire feeding mechanism is for guiding the wire from the reel provided on the main body fixing table to each torch, and is composed of a wire guide mechanism such as a roller for straightening wire bending and a conduit cape. Wire feed inching operation can be performed during setting before Arcnuttart. The width of the wire may be approximately 1.6-1 and the feeding speed may be 1.5-15 m/min.

The welding start/end detection sensor is for detecting the start/end of the workpiece at the start and end of welding, and the detection output is used for controlling the arc nutat and nutop.

(21) is the welding machine power supply, and the figure is the turning roller on which the container to be welded (1) is placed.
) is coupled to a motor with a capacity sufficient to rotate A number of television receivers are provided, forming a centralized control system. garden, control all
M (8) incorporates a CPU, CRT, etc. that stores and displays the shape, dimensions, etc. of the object to be welded (workpiece) entered on the keyboard.

The information entered on the keyboard includes the set beam nullide amount, workpiece inner circumferential surface distance, number of plates, shape, and
The installation pitch, torch angle/travel (horizontal and vertical), type of welding (continuous welding or tap welding), etc. Based on this information, the first and second welding, J Ill l ( The various mechanisms described above are automatically controlled. FIG. 10 illustrates a flowchart of this automatic control system.

[Brief explanation of the drawing]

Figure 1 is a cutaway front view of an upright cylindrical rectification column, and Figure 2 (a)
), (b), and (C) are respectively plan views of the tray supporting plates of the same bath, Figure 3 is a perspective view of the Shunga welding part, and Figure 4 and the following drawings are 1ml of the automatic welding equipment of this invention. An example is shown, and FIGS. 4, 2 and 5 are partially cutaway views, respectively. The figure is a block diagram of the control system, and Figure 1θ is a flowchart of the automatic operation system. (1) ... Vessel to be welded, (6) ... Manipulator body, (9) ... Manipulator beam, fIQ. ...First welding i, (10a). (101))...Head, Uη...Traveling trolley, Uri...Second welding machine, ui, f匈, as, u
i...Torch, @...Turning roller. Agent: Patent Attorney Ryuta Fujita Figure 1 Figure 2

Claims (1)

[Claims] ■ In an automatic welding device for fillet welding a tray support plate into a cylindrical container of an upright cylindrical rectification column, a first welding device is installed at the tip of a manipulator beam that protrudes horizontally from the manipulator body and can be raised and lowered. A second welding machine is mounted on a traveling carriage which is mounted on the manipulator beam so as to be freely nullable and which is simplified by control from the manipulator main body, and each of the first and second welding methods is Automatic welding characterized in that a pair of carbon dioxide gaff arc welding torches are provided in a pair of heads, and a rotational drive motor is coupled to a turning roller through which the manipulator beam is inserted and a lying cylindrical body to be welded is placed thereon. Device.