KR100448534B1 - Automatic system for detecting the remain of welding wire - Google Patents

Abstract

The present invention relates to an automatic welding wire residual amount automatic detection device, the purpose of which is to automatically detect the residual amount of the wire loaded in the wire feeder to omit the welder's confirmation work by time and delayed welding interruption due to the lack of the wire residual amount It is to provide an automatic detection of the remaining amount of automatic welding wire can be prevented, and at the same time shorten the working time, and improve the productivity and economy.

According to the present invention, an automatic welding in which a wire wound on a wire reel bracket is assembled to be rotatable by a shaft, and is supplied to a welding portion while the wire is continuously released during welding by a wire feeding motor installed in the welding head portion. In an apparatus; Two hinge parts for connecting and installing one side of the wire reel bracket to the base frame so as to be rotatable, and the base frame is installed in the base frame so as to contact the lower side of the other side of the wire reel bracket not installed, the weight of the wire and the wire reel It comprises a supporting air cylinder, a sensor installed on one side of the air cylinder to sense the position of the air cylinder piston, and a comparison unit for measuring the residual amount of the wire by the detection of the sensor and compare it with a set value, It is to provide an automatic welding wire residual amount automatic detection device that sends a warning message to the welder when the residual amount of the wire is smaller than the set value.

Description

Automatic Welding System Residual Detection Device {Automatic system for detecting the remain of welding wire}

The present invention relates to an automatic welding device for automatically detecting the residual amount of wire, and when welding by the submerged arc welding method, the remaining amount of the wire remaining in the wire feeder is automatically measured to prevent the welding interruption due to the lack of the remaining wire during welding. The present invention relates to a device for automatically detecting a residual amount of automatic welding wire that can be prevented.

In general, welding techniques used in industrial sites are classified into welding, pressing and soldering. When the welding method which is most widely used in shipbuilding or steel structure manufacturing process is subdivided, it is classified into consumables in which the electrodes are consumed and non-consumables in which the electrodes are not consumed. In addition, such consumable welding methods include shield metal arc welding, gas metal arc welding, and submerged arc welding, each of which is unique. It is classified as semi-automatic or automatic welding according to the method and usage, and depending on the number of electrodes to be welded at the same time, Single or Multi, that is, 1 electrode, 2 electrodes, 3 electrodes ... welding Classified as

The gas metal arc welding generates an arc between the electrode and the base material by applying a welding current to the electrode continuously mechanically supplied, and then continuously or activating an inert protective gas around the welding pool to protect the welded portion and the weld metal. As a welding technique performed while supplying, the current / voltage to be used is low, the welding rod diameter, the weld metal, and the penetration are small, so that it is widely applied to the electron fine welding of a heavy plate.

The submerged arc welding method is a method of welding an object to be welded with heat obtained by generating an arc between a welding rod and a base material under a granular flux. The submerged arc welding method stacks the granular flux on the base material in advance and mechanically continuous the welding wires through which current flows. Supply is made of welding. At this time, the arc is covered by the flux and is not visible from the outside, and the flux blocks the atmosphere to protect during the refining action of the weld metal and contributes to the formation of weld beads or slag.

The submerged arc welding is deeply welded due to the size and current of the welding rod used, and is widely employed as a high efficiency joining method for thick plate structural steel, and the butt joints and fillets are used in shipbuilding, steel pipe manufacturing, and general steel structures. It is regarded as a representative high efficiency welding method that is widely used for welding of paste and paste.

Conventionally used submerged arc welding uses a one-electrode, two-electrode, or three-electrode method, and when the electrode configuration is two-electrode, DC + AC or AC + AC In the case of three-electrode, DC + AC + AC or AC + AC + AC are adopted. For inner surface welding of small diameter pipes, one electrode or two electrode method is used for welding the outer surface of the pipe due to the characteristics of the working space. The 1 electrode, 2 electrode, and 3 electrode systems were used for this.

This welding technique generally performs higher currents and highways than the most widely used gas metal arc welding process. Therefore, the current or welding speed, that is, welding speed (welding efficiency), is several to tens of times. It is a technique that can improve the deformation and quality of welding by reducing the number of welding passes, especially in thick plate welding.

However, the submerged arc welding method not only uses a large number of electrodes for high efficiency, but also consumes a large amount of electrodes (wires) per unit time because the current or speed is high current and high speed. Therefore, as the wires mounted on the automatic welding device must be replaced frequently, the operation rate of the equipment is reduced, and during welding work where there is a space limiting factor such as welding the inner surface of a steel pipe, the welder cannot access the welding part and is continuously supplied. When the welding stops due to the lack of the remaining amount of the welding wire, re-welding cannot be started and the workpiece is discarded. Of course, in order to prevent the above welding interruption, there is also a method of checking the remaining amount of the welding wire before every work, but in the case of the inner welding device, the welding wire is about 20M behind and the outer welding device is about 10M high platform. Since the remaining amount of the welding wire disposed in the loft workshop must be checked at every welding start, it is very cumbersome, and the working time is delayed, thereby lowering productivity.

The present invention has been made in consideration of the above problems, and an object thereof is to automatically detect the residual amount of the wire loaded in the wire feeder, to omit the checking work of the welder by time, and to prevent the welding interruption due to the lack of the residual wire amount. It is to provide an automatic welding wire residual amount automatic detection device that can prevent, shorten the working time, and improve productivity and economy.

According to the present invention, an automatic welding in which a wire wound on a wire reel bracket is assembled to be rotatable by a shaft, and is supplied to a welding portion while the wire is continuously released during welding by a wire feeding motor installed in the welding head portion. In an apparatus; Two hinge parts for connecting and installing one side of the wire reel bracket to the base frame so as to be rotatable, and the base frame is installed in the base frame so as to contact the lower side of the other side of the wire reel bracket not installed, the weight of the wire and the wire reel It comprises a supporting air cylinder, a sensor installed on one side of the air cylinder to sense the position of the air cylinder piston, and a comparison unit for measuring the residual amount of the wire by the detection of the sensor and compare it with a set value, It is to provide an automatic welding wire residual amount automatic detection device that sends a warning message to the welder when the residual amount of the wire is smaller than the set value.

1 is a front view showing the configuration according to the present invention

Figure 2 is an exemplary side view showing a configuration according to the present invention

3 is a block diagram of the present invention;

* Explanation of symbols for main parts of the drawings

(1): wire reel (2): wire

(3): wire reel bracket (4): base frame

(5): hinge part 6: air cylinder

(7): sensor (8): comparison unit

(9): warning light (11): shaft

21: wire remaining amount 22: set wire amount

(51): fixed bracket (52): rotating bracket

53: pin 61: piston

Figure 1 shows a front view showing a configuration according to the invention, Figure 2 shows a side view showing a configuration according to the present invention, the present invention is a wire remaining in the wire reel (1) of the automatic welding device The residual amount of (2) is automatically detected and compared with the detected amount of wire remaining 21 and a predetermined amount of work, that is, the amount of wire 22 to be consumed when welding the inner surface of the steel pipe. It is a device that informs you.

The automatic welding device is a device that automatically performs a series of welding operations with a single switch operation, and adjusts the continuous consumption electrode to the center of improvement, and properly spreads the flux, causing arcs in the order of the number of electrodes. The electrode is designed to perform the welding while moving the electrode or the electrode while moving the electrode toward the center of improvement until the welding is completed.

The present invention is to automatically detect the amount of the wire (2) remaining in the wire reel (1) of the automatic welding device as described above, the two installed on the base frame (4) to be connected to the lower side of the wire reel bracket (3) Hinge portions 5, an air cylinder 6 installed at one side of the base frame 4 so as to contact a lower side of the wire reel bracket 3 to which the hinge portion 5 is not connected, and the air cylinder 6 Sensor 7 for detecting the position of the piston 61 of the air cylinder and a comparison unit for measuring the residual amount of the wire 2 according to the detection of the sensor 7 and comparing it with a set value. It consists of (8).

The hinge part 5 connects one side of the lower part of the wire reel bracket 3 and the base frame 4 to which the wire reel 1 is rotatably connected by the shaft 11 and the base frame 4, and the upper part of the base frame 4. A fixing bracket (51) installed at the bottom, a rotating bracket (52) connected to and installed under the wire reel bracket (3), and a pin (53) connecting the rotating bracket (52) and the fixing bracket (51). The pin 53 of the hinge portion 5 connecting the lower one side of the wire reel bracket 3 and the base frame 4 has the same center line. That is, the rotating bracket 52 and the fixing bracket 51 of the hinge portion 5 are connected to each other by the pin 53, the hinge portion 5 is two hinges on the lower side of the wire reel bracket (3) Branch pins 53 are provided to have the same center line.

The air cylinder 6 is installed on the base frame 4 so as to contact one side of the wire reel bracket 3, the hinge portion 5 is not installed, the weight of the wire 2 and the wire reel (1) Is provided with a constant pressure to support the, the piston 61 is raised / lowered by the wire reel bracket (3) rotated around the hinge portion (5).

Two hinges 5 rotatably connecting one side of the wire reel bracket 3 and the base frame 4, and an air cylinder 6 supporting the weight of the wire 2 and the wire reel 1. Has a Δ shape on the base frame 4 and is provided.

The sensor 7 is installed on one side of the air cylinder 6, and moves up / down by the wire reel bracket 3 rotating around the hinge portion 5 according to the amount of wire of the wire reel 1. The degree of movement of the piston 61 of the air cylinder 6 is detected.

The comparison unit 8 measures the wire residual amount 21 by the detection of the sensor 7, and measures the wire residual amount 21 and the amount of wire 22 consumed in one preset welding before operation. By comparison, when the measured residual amount 21 of the wire is smaller than the set amount 22 of the wire, a warning message such as a warning light 9 is sent to the welder positioned in the operating panel of the welding apparatus.

As described above, in the present invention, when the wire wound on the wire reel is gradually consumed so that the remaining amount of the wire becomes less than the amount capable of welding one welded object without interruption, the piston of the air cylinder supporting the wire and the wire reel is moved upward. The sensor is to measure the piston rising degree of the air cylinder to be moved up, the residual amount of the wire is detected by the measurement of the sensor, the residual amount of the wire and the amount of the predetermined wire (when welding If the amount of wire remaining is smaller than the set wire amount, a warning message is sent to the welder and an interlock is applied to the welding start (start) control system.

As such, the present invention automatically uses the submerged welding, which consumes a lot of electrodes per unit time, to automatically adjust the residual amount of the wire remaining in the wire reel during welding in places where there are spatial limitations such as steel pipe inner surface welding. If the residual amount of the wire is less than the amount that can be welded uninterrupted to one welding object, the warning message is sent to the welder, and the welding is stopped due to the lack of welding wire during welding. There are many effects such as eliminating the occurrence of defective products, eliminating the trouble of always checking the amount of wire remaining in the wire reel before welding, and improving work efficiency and productivity.

Claims (2)

In the automatic welding device in which a wire wound around the wire reel bracket is rotatably connected by a shaft, and is supplied to the welding portion while the wire is continuously released during welding by a wire feeding motor installed in the welding head portion. ; Two hinge parts connecting and installing one side of the wire reel bracket to the base frame to be rotatable, An air cylinder installed on the base frame to support the weight of the wire and the wire reel so as to be in contact with the lower side of the wire reel bracket which is not provided with the hinge part; A sensor installed at one side of the air cylinder to detect a position of the air cylinder piston; It comprises a comparison unit for measuring the residual amount of the wire by the detection of the sensor and comparing it with the set value, if the residual amount of the wire is smaller than the set value, the automatic welding wire characterized in that to send a warning message to the welder Residual automatic detection device. The method of claim 1; And the two hinge parts and the air cylinder are installed in the base frame to form a Δ shape.