KR20000013425A - Automatic welding device in two places of pipe flange - Google Patents

Abstract

PURPOSE: An automatic welding device is provided to be able to perform the filet-welding of two places on the inner and outer sides of a pipe flange. CONSTITUTION: The automatic welding device is comprised of a tracing device for indirectly tracing a flange face by contacting a sensor unit consisted of a spring buffer and an adjacent sensor to the flange face and a sensor for sensing and tracing the flange face of a high temperature while welding. Herein, the tracing sensor can measure a distance without directly touching a heat source at a high temperature and can sense and trace the flange face at a high temperature with the sensor while welding.

Description

Piping Flange 2-Point Automatic Welding Device

The present invention relates to an apparatus for welding a flange to a vessel of a ship, and more particularly, to an automatic welding apparatus capable of simultaneously performing two fillet welding of the inside and the outside of a flange.

Conventionally, one worker works by using positioner and turning roller according to the length of the pipe or welds inside by using simple jig, and then one person works by one point. This took a lot and was inconvenient.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and the tracking device that can indirectly track the flange surface by contacting the sensor surface consisting of a spring buffer and a proximity sensor to the flange surface and the flange surface of the high temperature during welding (or other To provide a sensing device that can track and track similar welds, and an automatic welding device that enables simultaneous welding of the inside and the outside of the flange by tracking the upper and lower surfaces of the flange by attaching the sensing method and sensor unit as described above. Has a purpose.

The present invention is to install a vertical movement slide on the upper surface of the electric traveling truck moving to the flange welding surface according to the rail in order to achieve the above object, the vertical movement slide is provided with two transfer rods are formed with a screw thread And an upper torch fixing part having two through holes penetrating through the conveying bar and formed with a thread that engages with the thread of the conveying bar in one of the through holes, is installed on the upper side of the conveying bar, The lower tochigo government having a through hole having a thread is formed on the lower side of the transfer rod, and the sliding portion and the sliding portion are horizontally extended to the upper tochigo government. Installing a torch automatic feed slide having a moving unit installed along the moving unit, A tracking sensor is installed at the lower part of the moving part, and a torch electric feed slide is installed at the front of the moving part to fix the torch finely adjustable to the outside of the flange, and the lower torch is provided with a sliding part and a moving part. Torch automatic feed slide is installed, the tracking sensor is installed at the lower part of the moving part, and the torch electric feeding slide is installed to extend horizontally to the moving part to fix the torch finely adjustable in the flange, The pipe flange two-point automatic welding device and the tracking sensor characterized in that the transfer to maintain the distance set by the first automatic receiving the signal of the tracking sensor and the roller moving along the surface of the flange; A roller support for fixing a roller shaft on which the roller is rotatable; A sensor sensing shaft having one end fixed to the roller support and having a spring support ring installed therein; A housing in which one end of the spring is supported by the spring support ring and the other end of the spring is installed in the sensor sensing shaft so as to be supported by the spring fixing cap, and the sensor sensing shaft is inserted into the housing and has a compressed air inlet formed thereon; And it provides a pipe flange two-point automatic welding device, characterized in that consisting of a proximity order installed to be adjacent to the other end of the sensor sensing shaft.

1 is a configuration of the automatic two-point automatic welding apparatus of the present invention.

Figure 2 shows a welded portion of the flange of the present invention.

Figure 3 is a schematic configuration of the flange tracking device.

Figure 4 is a detailed view of the flange tracking sensor unit.

<Brief description of symbols for the main parts of the drawings>

1: Electric driving cart 2: Up and down feed slide

3: torch transfer slide 4: torch transfer slide

5: Torch left and right feed slide 6: Tracking sensor

7: wire feeder 8: control panel

9: operation panel 10: turning roller

20: upper torch fixing portion 21: lower torch fixing portion

22: transfer rod 23, 24: sliding part

25: torch 26, 27: moving part

30: flange 31: pipe

32: flange outer weld part 33: flange inner weld part

34: analog proximity sensor 35: spring

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

1 is a configuration diagram of the automatic two-point automatic welding device of the present invention, the vertical movement slide (2) is installed on the upper surface of the electric traveling cart (1) for moving the welding torch to the welding position. The electric traveling cart (1) is a pipe with a flange attached to the turning roller, the motor can move to the pipe end flange welding portion at a speed of 15 ~ 200 cpm along the rail by the motor drive, the vertical movement slide (2 ), Two moving rods 22 are installed, and the transfer rod 22 has a screw thread formed therein, and passes through the transfer rod 22 to the upper and lower tochigichi 20 and the lower tochigochi 21. ) Is installed. At this time, the upper torch fixing portion 20 and the lower torch fixing portion 21 are moved up and down by the rotation of each thread of the two transfer rods 22.

The upper torch fixing portion 20 extends horizontally to install a torch automatic feeding slide 3, and the torch automatic feeding slide 3 receives a signal from the tracking sensor 6 to automatically set a distance initially set. Transport it to maintain.

The torch automatic feed slide 3 is divided into a sliding part 2 and a moving part 26, and conventionally, a slide which is connected to a motor and moves can be used.

And since the number of flange welding passes are constructed in 3 to 5 passes according to the pipe thickness and proceeds continuously until the end of the welding, the arc movement between the welding passes can be adjusted to the lower portion of the moving part 26 so that the operator can streamline the adjustment with the joystick. The torch feed slide 4 which moves forward and backward is provided, and the movement switch of the torch feed slide 4 is connected to the joystick. The torch 25 is fixed to the moving part of the torch conveying slide 4. Between the torch conveying slide 4 and the torch 25 fixing portion is installed torch left and right conveying slide to manually adjust the left and right movement of the torch. The torch left and right conveying slide is a device for retracting the torch in the opposite direction of the pipe rotation from the pipe center line according to the pipe diameter to improve the welding quality when setting the torch in flange welding. That is, the fixing part of the torch 25 may be rotated left and right using a structure such as an adjusting screw.

In order to automatically move the torch automatic feed slide 3 forward and backward, a tracking sensor for measuring and controlling the distance between the welding torch and the pipe is required.

The pipe rotating on the turning roller 10 moves helically in either direction with respect to the longitudinal direction. When flange welding while moving, the operator must constantly monitor the welding arc and adjust the arc position. In this situation, it is very difficult for one person to monitor and adjust two-point welding of the inner and outer flanges. Therefore, a flange tracking sensor was installed to prevent arc monitoring during one rotation of the pipe at the same time of welding start. However, even when using the sensor, it is necessary to make partial adjustments depending on the degree of right angle of the pipe when cutting and the length of each length when mounting. In addition, during welding, the flange temperature rises to a high temperature. The temperature varies depending on the number of welding passes, flange thickness, and size, but increases from about 250 ℃ to 400 ℃. In these high temperature environments, analog proximity sensors could not be used directly on the flange face. Therefore, an apparatus for receiving the sensor signal indirectly is required, and the apparatus is as shown in FIGS. 3 and 4. 3, the shape of the sensor is schematically illustrated. The analog proximity sensor 20 is mounted on the lower portion of the moving part 26 connected to the sliding part 23 to move, and the analog proximity sensor 20 is connected to the sliding part 23. The sensor body 50 is mounted on the lower portion of the moving part 26 such that the end of the sensor sensing shaft 39 is positioned at a predetermined distance G. In addition, the sensor sensing shaft 39 is elastically moved left and right by a spring 35 supported by a spring support ring 41, and this movement is a roller support formed at the other end of the sensor sensing shaft 39 ( It moves in accordance with the movement of the roller 36 rotatably installed in 37). That is, the roller 36 moves on the flange 30, and the sensor detecting shaft 39 moves according to the position of the flange surface, and the position is detected by the analog proximity sensor 20.

4 is a view showing in detail the flange tracking sensor unit, the roller 36 is supported on the roller support 37 rotatably by the roller shaft 38, the roller support 37 is the sensor detecting shaft (39) It is fixed to one end of the sensor, the sensor sensing shaft 39 is penetrated into the interior of the housing 46 mounted on the lower portion of the moving part 26, the spring support ring in the two central parts of the sensor sensing shaft 39 The spring fixing cap 45 is inserted into a hole through which the sensory sensing shaft 39 of the housing 46 penetrates 41 so that one end of the spring 35 is supported, and the other end of the spring 35 is supported. Fix it. Of course, the spring fixing cap 45 also has a hole formed so that the sensor sensing shaft 39 passes through. In addition, the compressed air inlet 40 is formed as a through hole through which the sensor sensing shaft 39 moves outside the housing 46 to cool the compressed air to prevent the temperature rise of the sensor unit due to radiant heat.

The roller 36 installed at the end of the sensor sensing shaft 39 pushes the roller by the pressure of the spring 35 inside the housing 46. At this time, the sensor sensing distance is about 15 mm and the moving part 26 moves so that the roller 36 contacts the flange and the end of the sensor sensing shaft moves to the end of the proximity sensor 20, and the sensor sensing distance is 10 mm. , The moving unit 26 stops together with the motor. The sensor is set to this distance, and when the pipe is rotated in this state, the tracking sensor 6 maintains 10 mm when the flange 30 surface of the pipe is curved or the pipe is moved finely in the forward and backward direction. In order to drive the motor to move the moving part 26 in the direction in which the pipe or flange (30) surface to move the distance between the torch and the base material.

As described above, the tracking sensor of the present invention has an effect of measuring a distance without directly contacting a high temperature heat source, and enables the sensor to sense and track a high temperature flange surface (or other similar weldment) during welding by the sensor. By attaching the sensing method and the sensor as described above, it is possible to simultaneously weld the inside and the outside of the flange by tracking the upper and lower surfaces of the flange.

Claims (2)

A vertical moving slide 2 is installed on the upper surface of the electric traveling cart 1 moving along the rail to the flange welding surface, and the two moving rods 22 having a thread are formed on the vertical moving slide 2. The upper torch fixing part 20 has two through holes formed therethrough and one of the through holes formed therein is formed with a screw thread engaged with the threads of the transfer rod 22. The lower torch is provided on the upper side of the lower torch, and has a thread formed in the upper torch fixing portion 20 so that the thread is formed so as to engage only the transfer rod 22 opposite to the transfer rod 22 to be engaged. The government part 21 is installed below the transfer rod 22, and extends horizontally to the upper tochigo government part 20 to move along the sliding part 2 and the sliding part 2 (26). The torch feed slide (3) The torch 25 is provided with a tracking sensor 6 in the lower part of the moving part 26, and a torch electric transfer slide 4 is installed in front of the moving part 26 to perform the flange outer welding 32. It is fixed to the fine adjustment, the lower torch fixing portion 21 is provided with a torch automatic feed slide 3 formed with a sliding portion 24 and the moving portion 27, the lower portion of the moving portion 27 A tracking sensor (6) is installed on the moving part (27), and the torch drive (4) is installed horizontally to the moving part (27) to fix the torch (25) for performing flange inner welding (33). And a pipe flange two-point automatic welding device, characterized in that for conveying the signal of the tracking sensor (6) to maintain the distance set automatically first. The method of claim 1, wherein the tracking sensor (6) comprises a roller (36) moving along the surface of the flange (30); A roller support (37) for fixing the roller shaft (38) on which the roller (36) is rotatable; A sensor sensing shaft 39 having one end fixed to the roller support 37 and a spring support ring 41 disposed in the middle thereof; One end of the spring 35 is installed on the spring support ring 41 and the other end of the spring 35 is installed on the sensor sensing shaft 39 so as to be supported by the spring fixing cap 45. 39 is inserted into the housing 46, the compressed air inlet 40 is formed thereon; And a proximity order (20) installed adjacent to the other end of the sensor sensing shaft (39).