KR100289220B1 - Automatic welding method for pipe fittings and apparatus thereof - Google Patents

Abstract

The present invention relates to a welding method and apparatus that can be used universally regardless of various specifications of the release pipe.

In general, because of the variety of specifications and the irregular path shape of the welding improvement part, the welding pipe cannot be automated and is dependent on manual work. Therefore, the quality of the welded part is uneven and the productivity is low.

The present invention is to solve the above-mentioned conventional problems, the welded torch is rotated in place by the external force in the longitudinal center, and the welding torch by the seam tracker in the inner lower and outer upper portion of the release tube up, down, left, right The welding is performed by moving in the direction or the front and rear directions, and can be widely used for various specifications of the release pipe, and it is possible to achieve even quality and improve productivity.

Description

Automatic welding method and device of a release pipe {AUTOMATIC WELDING METHOD FOR PIPE FITTINGS AND APPARATUS THEREOF}

The present invention relates to a welding method and apparatus that can be used for general purposes regardless of various specifications of the release pipe.

In general, when a change of direction or branching is required when piping using a steel pipe, a release pipe is used. Such a release pipe has been widely used in terms of diameter or angle in the case of a curved pipe shape.

The release pipes are cut according to the specifications required by the release pipes according to the appropriate length and angle, and are mounted in accordance with the positions where the mutually inclined cuts are formed. To prevent this from happening, after welding several parts, the welding is performed and fabrication is made.

However, in the welding work of the release pipe, the entire welding path is a closed curve, and the path of the improved part in which the welding is made is not made of a geometric shape such as a circle or an ellipse, and in the case of the release pipe itself, it maintains a constant angle between materials to be joined. When rotated to the longitudinal center of one side, the shape of the trajectory generated by the path of the improved portion forms an irregular shape.

In addition, due to the characteristics of various shapes depending on the diameter and angle of the release pipe, and the small quantity of various types that are not in demand, it may be possible to develop and utilize a dedicated welding device that meets one of the standards. In order to enable welding, it is difficult to solve the technical situation, and still depends on the welding method by hand.

In addition, when the welding is performed by manual work, because the release tube requires a high degree of skill, there is a problem that quality control is difficult and productivity is low because the quality of the weld is difficult to appear evenly according to the mind of the worker or other external factors.

The present invention has been researched and developed in order to solve such a conventional problem, and has the following objectives.

The main object of the present invention is to provide an automatic welding method and apparatus that can be used for general purposes regardless of various specifications of the release pipe.

Another object of the present invention is to provide a welding method that enables welding can be performed sequentially or simultaneously in the inside and outside of the release tube so that welding can be efficiently performed without introducing impurities into the release tube during the outside welding.

Another object of the present invention is a welding torch to be welded along the position detection sensor of the seam tracker for tracking the weld seam and the welding improvement part is to be adjacent to the left and right rather than the front and rear directions when the welding torch is centered. It is intended to be easy to detect the position of the welding improvement portion to be located side by side, and to be welded more accurately to the welding improvement portion.

Another object of the present invention is to be configured to be able to move the rotating mechanism in the forward, rearward direction to mount the release tube on the top of the revolving mechanism before welding work or to conveniently move the release tube from the top of the revolving device after the welding operation is completed. .

The present invention, in order to achieve the above-mentioned title, in the method of welding to the welding improvement part during the manufacture of the release tube, in a state in which the welded release tube is mounted on the upper portion by rotating the rotation center in the longitudinal direction, the release tube According to the position detection of the welding improvement part by the seam tracker at the inner lower part or the outer upper part of the welding part, the welding torch is moved in the vertical direction, the left-right direction, or the front-rear direction so that the position of the welding improvement part coincides with the welding to be made. However, the arm of the assembly installed with the seam tracker and the welding torch is moved forward and backward by the front and rear movement mechanism, and the arm is moved upward and downward by the shanghai movement mechanism. The column on which the arm is installed is moved in the left and right directions by the left and right moving mechanisms, so that the welding pipe is made. Provides an automatic welding method.

In addition, as a device for realizing the above-described method, in the apparatus for welding to the welding improvement part during the production of the release pipe, the assembly of the seam tracker and the welding torch are moved forward and backward respectively by the front and rear movement mechanism. It is possible to install, these arms are installed in the column to be moved in the vertical direction, respectively by the Shanghai copper mechanism, the column is welded by being configured to be movable in the left and right directions by the left and right moving mechanism The mechanism and the rotating mechanism for mounting the welded release tube on the upper portion and rotating in the longitudinal direction of the release tube in place are made to be interlocked with each other, the driving roller is a drive motor installed on one side of the base and Provided is an automatic welding device for a release tube that allows for operation via the intermediate shaft.

In addition, if necessary, the above-described welding apparatus of the rotating mechanism is provided with a welding device that is additionally provided with a forward and backward moving mechanism for moving the rotating mechanism in the forward and backward direction.

1 is an explanatory diagram showing a concept of the present invention;

Figure 2 is a conceptual diagram for explaining the process of welding at the same time, inside and outside of the tube to be applied in the present invention,

Figure 3 is a linear diagram illustrating the trajectory of the sensor and the welding torch of the seam tracker during welding in the present invention,

4 is a schematic view showing the concept of a device incorporating the present inventors welding method,

Figure 5 is a side view showing a welding mechanism in the present invention, the welding apparatus;

6 is a front view of FIG. 5;

Figure 7 is a side view showing the center of the home appliance in the welding device of the present invention,

8 is a front view of FIG. 7;

Figure 9 is a partial perspective view illustrating a state in which the position detection sensor of the seam tracker in the welding device of the present invention installed a separate detachable support for tracking the welding line adjacent to the weld improvement part of the welding release pipe.

Explanation of symbols on the main parts of the drawings

1: release tube 2: inner lower part

3: outer lower part 4, 4a, 4b: welding improvement part

5: welding torch 6: detection unit

7: position sensor 10: assembly

12: arm 14: front and rear movement mechanism

16: Shanghai East Organization 18: Column

20: left and right moving mechanism 22: welding mechanism

24: Rotator

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

That is, according to the concept of the present invention, as shown in FIG. 1, the welded release tube 1 is rotated in the longitudinal center in place by an external force, and the inner lower portion 2 and the outer upper portion 3 of the release tube 1 are rotated. ), The welding torch 5 is moved up, down, left, and right so that the position of the welding improvement portion 4 and the welding torch 5 coincide with the position detection of the welding improvement portion 4 by the seam tracker. The welding is performed by moving in the direction or the forward and backward directions.

In addition, as shown in Figure 2, in the above-described welding process to weld the inner and outer welding improved parts (4a, 4b) of the release pipe (1) continuously at the same time, the welding is started first in the inner lower part (2) The inner welding start point reaches the outer upper part 3 of the release tube 1 as the outer welding part, and then starts welding later on the outer upper part 3, and the inner and outer welding are simultaneously performed, and then the inner welding is completed first. Outer welding may be completed.

In addition, the trajectory of the welded improvement part 4 of the release pipe 1 is greater than the allowable curvature and the minimum of the front and rear linear distances formed by the position sensor of the seam tracker and the welding torch following the position sensor. When the welding torch is out of the welding line because it is not allowed as much as the distance, as shown in FIG. 3, a separate detecting unit 6 corresponding to the welding improving unit 4 is formed in addition to the welding improving unit 4, and the detecting unit 6 The position detection sensor 7 of the seam tracker and the welding torch 5, which are moved on the welding improvement part 4, are positioned side by side to the left and the right side so that welding is performed.

Looking at a preferred example of the device embodied on the basis of the above-described basic principle is as follows.

Referring to Figures 4 to 9, in the case of the device of the present invention, the arm 12 to move the assembly 10 of the seam tracker and the welding torch in the forward and backward directions by means of the front and rear movement mechanisms 14, respectively. The arm 12 is installed in a predetermined column 18 to be movable up and down by the shanghai moving mechanism 16, and the column 18 is a left and right moving mechanism 20. By mounting the welding mechanism 22 and the welded release pipe (1) welded to the upper portion and configured to be movable in the left and right by the upper portion in place, the rotation is made about the longitudinal direction of the release pipe (1) Rotating mechanism 24 to be made is to be interlocked with each other, the rotating mechanism 24 is installed on the base 72, the driving roller (74, 74) and the idler roller (76, 76) at a predetermined interval apart In addition, the driving rollers 74 and 74 may be formed around the driving motor 78 and the intermediate shaft 80 provided on one side of the base 72. Is configured such that operation is performed.

At this time, the assembly of the seam tracker and the welding torch 10, the welding torch in the normal form according to the position change detected by the position detection sensor of the seam tracker, the welding torch in the up, down and left and right directions. It is installed on the slider to move.

Arms 12 of the welding mechanism 22 are upper and lower portions of the support body 26 which is coupled to the drive chains 40 and 42 of the Shanghai copper mechanism 16 while the upper side surrounds the column 18. A plurality of idle rolls 28, 28, 30, 30 are provided so as to allow a slide movement. The forward and backward movement mechanism 14 of the welding mechanism 22 is one side in the longitudinal direction on one side of the arm 12. Movable nut part which is transmitted to the driving rod 34 and the drive chain 36 installed on both sides of the screw rod 32 and the support housing 26 fixedly installed so that the gap is spaced apart and screwed to the screw rod 32 ( 38). At this time, the movable nut part 38 is screwed with the threaded rod 32 on the inner side and is configured in the form of a chain sprocket wheel on the outer side to enable power transmission by the drive chain 36.

In addition, the shank copper mechanism 16 of the welding mechanism 22 is a column 18 by the drive chain (40, 42) is a support housing (26, 26) is fixed to one side of the drive chain (40, 42) It is made to ride up and down, drive chains (40, 42) are installed between the chain sprocket wheels (44, 46, 48, 50) respectively installed on the upper and lower portions of the column 18, the drive chain (40, 42 is configured to be operable by drive motors 52 and 54 and power transmissions 56 and 58 provided on the top of the column 18. Next, the left and right moving mechanisms 20 of the welding mechanism 22 can be operated. ) A mechanism for moving the entire column 18 in which the arm 12 is installed in the left and right directions. An idle roll 62 is provided at the lower part of the column 18 so as to be positioned on the rail 60. As a rear part of the column), a screw rod 64 is fixed to both sides horizontally and a drive motor 66 and a drive chain 68 fixedly installed at one side of the column 18 so that a predetermined interval is spaced apart from the column 18. Power transmission This is made of a coupling form of the movable nut portion 70 is screwed to the screw rod (64). At this time, the movable nut portion 70 has the same structure as the movable nut portion 32 described above.

Next, the rotating mechanism 24 is driven by the chain 82, 84, 84 via the driving motor 78 and the intermediate shaft 80, the driving roller (74, 74) is installed on one side of the base (72). The transmission is made to operate, the direction movement mechanism 90 is installed in the lower portion of the rotating mechanism 24, the direction movement mechanism 90 is installed a plurality of idle rolls 86 in the lower portion of the base (72) In addition, the idle roll 86 is formed on the rail 88 installed in the front-rear direction, and some of these idle rolls 86 may be configured in the form of a drive roll driven by a drive motor.

In addition, the position detection sensor 7 of the seam tracker is a separate detection unit 6 for tracking the welding line, and as shown in FIG. 9, so as to maintain a constant distance adjacent to the welding improvement unit 4 of the release pipe 1. Detachable support 92 can be installed continuously. In this case, since the release tube 1 is in the form of a steel pipe, when the rubber magnet is used, it can be freely installed according to the surface curvature of the release tube 1 or the curvature of the welded improvement part 4. After welding, it can be separated and recycled.

Next, the operation relationship of the apparatus made as described above will be described.

First, the welded release tube (1) to be welded is mounted on the driving roller (74, 74) and the idler roller (76, 76) in the rotating mechanism (24) by using a crane, and the direction moving mechanism (90). The upper and lower assemblies 10 are positioned in the inner and outer sides of the release tube 1 and moved forward and rearward so as to approach the inner and outer welding improvement portions 4a and 4b.

In order to finely move the assembly 10 to fit the initial position, the slider for moving up and down and left and right, the front and rear movement mechanisms 14 and 14 and the Shanghai movable mechanism 16 installed in the assembly 10 are moved. Set initial position by using and finish welding preparation.

In this state, when the rotating mechanism 24 is rotated by driving the rotating mechanism 24, the release tube 1 also starts to rotate slowly and starts to perform welding work. At this time, the seam tracker located in the assembly 10 by using the welding improvement unit 4 or the detachable support 92 detects the position sensor and the welding torch performs the welding operation along the welding improvement unit 4. . According to the position detection result by the detection sensor, the linear distance requiring the movement of the welding torch is required to move forward and backward in addition to the moving range of the up, down and left and right sliders installed in the assembly 10. In this case, the continuous welding is performed while the distance is moved by using the front and rear movement mechanisms 14.

Of course, if the two-way slider provided in the assembly 10 is set in the up, down, front, back direction, left, right, front, back direction, not the above, up, down, left, right directions, it is not set. If movement in the left, right direction or up and down direction is required, using the left and right moving mechanism 20 or the Shanghai moving mechanism 16, the distance of the welding torch is continuously made regardless of which direction. Welding can be achieved.

At this time, when the weld improvement part 4 is greater than the allowable curvature, the detachable support body 92 is attached in advance as the detection part 6 to be adjacent to the weld improvement part 4 and the position inspection by the position detection sensor is performed based on this. In addition, it is preferable to start welding from the inner lower part of the release tube 1 first, and then the inner welding start point passes through the outer welding part, and then the outer welding is started to perform both inner and outer welding at the same time. When the outer welding is performed in the non-welding state, unnecessary foreign matters or impurities generated during welding into the mold pipe 1 are not introduced through the gap between the welding improvement portions 4 which are welded during the external welding, and thus unnecessary removal work after welding is performed. As such, when the welding operation is completed, the operation is stopped and assembled using the front and rear moving mechanisms 14 and 14 and the Shanghai moving mechanism 16. (10) is spaced apart from the release tube (1) to move to a safe position or spaced apart from the inner and outer surface of the release tube (1) using only the Shanghai copper mechanism (16), and then located in the front and rear direction of the lower portion of the rotating mechanism (24) After moving the rotating mechanism 24 together with the release tube 1 which completed the welding operation using the moving mechanism 90, the release tube 1 may be taken out again using a crane.

In addition, when the size of the diameter of the release pipe (1) or the angle forming the curved pipe is different, the movement of the assembly (10) is required, the front and rear movement mechanism (14), Shanghai moving mechanism (16) and left and right movement mechanism (20). Use to move to the proper position according to the standard.

As described above, in the case of the present invention, the welded improvement pipe is rotated from its original position to the longitudinal center by external force, and the welding improvement part is welded according to the position detection of the welding improvement part by the seam tracker on the inner lower part and the outer upper part of the release tube. Welding is possible by moving the welding torch up, down, left, right or forward and backward so that the position of the torch is consistent, and the forward and backward movement mechanism 14, the up and down movement mechanism 16 and the left and right movement are By providing the mechanism 20, it can be utilized for general purposes regardless of the various specifications of the release pipe (1).

In addition, by allowing simultaneous welding in and out of the release tube 1, welding can be efficiently performed without introducing impurities into the release tube 1 during the outside welding, and the position of the seam tracker for tracking the welding line The welding torch, which is to be welded along the detection sensor and the welding improvement unit 4, is positioned side by side adjacent to the left and right sides instead of the front and rear directions when the welding torch is welded along the traveling direction of the welding improvement unit 4. The position of (4) can be easily detected and welding can be made more accurately to the welding improvement part 4, and the rotating mechanism 24 can be moved forward and backward so that the release pipe 1 can be rotated before welding. (24) It is convenient to separate and move the release tube 1 from the top of the rotating mechanism 24 after mounting on the upper part or after the welding work is completed.

Claims (5)

In the method of welding to the weld improvement part at the time of manufacture of the release tube, In the state where the welded release tube (1) is mounted on the upper side by rotating the rotating mechanism around the longitudinal direction in place, According to the position detection of the welding improvement part 4 by the seam tracker in the inner lower part 2 and the outer upper part 3 of the release pipe 1, the position of the welding improvement part 4 and the welding torch 5 may correspond. The welding torch 5 is moved in the vertical direction, the left-right direction or the front-rear direction to make the welding, The arm 12 of the assembly 10 provided with the seam tracker and the welding torch 5 is moved forward and backward by the front and rear movement mechanism 14, In addition, the arm 12 is moved up and down by the Shanghai copper mechanism 16, In addition, the arm 18 is installed column 18 is moved in the left and right direction by the left and right moving mechanism 20, Automatic welding method of a release tube, characterized in that the welding is made In the apparatus for welding to the weld improvement part during the production of the release tube, The arm 12 is installed on the arm 12 so as to be moved forward and backward by the front and rear movement mechanism 14 of the seam tracker and the welding torch. The welding mechanism 22 is installed in the column 18 so as to be movable in the up and down directions, and the column 18 is installed by the left and right movement mechanism 20 and is movable in the left and right directions. Wow, The rotating welding mechanism 24 for mounting the welded release tube (1) on the upper portion and rotates around the longitudinal direction of the release tube (1) in place is made to be interlocked with each other, The rotating mechanism 24 installs the driving rollers 74 and 74 and the idler rollers 76 and 76 on the base 72 so that a predetermined distance is apart, and the driving rollers 74 and 74 are formed on the base 72. Automatic welding device of a deformed pipe, characterized in that the operation via the drive motor 78 and the intermediate shaft 80 is installed on one side The method of claim 4, wherein Arm 12 of the welding mechanism 22 is installed to allow the slide movement between the plurality of idle rolls 28, 28 (30, 30) installed on the upper and lower portions of the support housing 26, The front and rear movement mechanism 14 of the welding mechanism 22 includes a movable nut portion 38 which is screwed with the screw rod 32 fixed to one side of the arm 12, and a driving motor 34 of the support housing 26. ) Is configured to transfer power to the drive chain 36, The shank moving mechanism 16 of the welding mechanism 22 is configured such that the support housing 26 moves up and down by the drive chains 40 and 42 on the column 18. The drive chains 40 and 42 are installed between the chain sprocket wheels 44, 46, 48 and 50 respectively provided at the bottom thereof, and the drive chains 40 and 42 are drive motors installed at the top of the column 18. (52,54) and the power transmission (56,58) is configured to enable operation, The left and right movement mechanism 20 of the welding mechanism 22 includes a screw rod 64 having a lower idle roll 62 of the column 18 positioned on the rail 60 and fixed to the rear of the column 18. The screwed movable nut part 70 and the drive motor 66 fixedly installed at one side of the column 18 are configured to transmit power by the drive chain 68. Automatic welding device of the release pipe, characterized in that the welding mechanism 22 is made. The method of claim 4, wherein The direction movement mechanism 90 is installed in the lower portion of the rotating mechanism 24, but the direction movement mechanism 90 installs a plurality of idle rolls 86 in the lower portion of the base 72, and the idle roll 86 Is provided on the rail 88 provided in the front and rear direction, automatic welding device for a release tube. The method of claim 4, wherein Automatic welding device for a release tube, characterized in that the removable support body 92 is continuously installed so as to maintain a constant distance adjacent to the welding improvement portion (4) of the release tube (1).