MIG / MAG (metal inert gas / metal active gas) welding device with filling wires for double wires

Abstract

The utility model discloses a double-wire MIG / MAG welding device with a wire filling function, which belongs to the technical field of mechanical-welding gun parts and structures and comprises a double-wire feeding machine and a wire filling machine. A welding gun is connected to the double-wire feeding machine, and two welding wires are connected to the welding gun. Two welding wires on the welding gun are connected in a liquid bridge mode to form a large molten drop and a single double-wire electric arc, the double-wire feeding machine is connected with a single-electric double-wire welding power source, the wire filling machine is connected with an additional device, the additional device is fixed to a nozzle of the welding gun, the additional device comprises a third welding wire, and the third welding wire is connected with the single-electric double-wire welding power source. The wire filling machine is connected with a wire filling power supply; the device can greatly improve the cladding amount of welding and the welding quality of welding seams, and is suitable for the engineering application fields of engineering machinery, pipeline welding and the like.

Description

Technical Field

[0001] The utility model relates to a MIG / MAG welding device with double-wire filling, belonging to the technical field of mechanical-welding gun parts and structures. Background Art

[0002] With the rapid development of welding technology, how to improve welding efficiency has become an urgent issue to be solved. Traditional single-wire metal arc welding can no longer meet market demand. Under this background, double-wire welding technology has gradually emerged. In some very special occasions, double-wire welding can no longer meet the requirements of high cladding; therefore, it is necessary to propose a three-wire welding device. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a MIG / MAG welding device with double-wire filler wire, which can greatly improve the welding coverage and the welding quality of the weld, and is suitable for engineering application fields such as engineering machinery and pipeline welding.

[0004] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0005] In a first aspect, the utility model provides a MIG / MAG welding device with double-wire filler wire, comprising:

[0006] A double-wire feeder, the double-wire feeder is connected to a welding gun, and the welding gun is connected to two welding wires;

[0007] A wire filling machine is connected to an adapter, the adapter is fixed on the welding gun nozzle, and the adapter contains a third welding wire.

[0008] Furthermore, the twin-wire feeder is connected to a single-wire twin-wire welding power source, and the wire filling machine is connected to a wire filling power source.

[0009] Furthermore, the two welding wires on the welding gun are connected in the form of a "liquid bridge" to form a larger molten droplet and a single double-wire arc.

[0010] Furthermore, the welding wire tip of the conductive nozzle is located directly below the double-wire arc.

[0011] Furthermore, the adapter includes a guide rod, an adapter bracket, a conductive nozzle joint, a wire feeding tube, a rotary joint and a conductive nozzle, the adapter bracket is fixed on the welding gun, the guide rod is fixed on the adapter bracket, the rotary joint is arranged at one end of the guide rod close to the welding gun nozzle, the conductive nozzle is fixed on the rotary joint, and one end of the conductive nozzle is connected to the wire filling machine through the wire feeding tube.

[0012] Furthermore, the adapter also includes: a first screw, a second screw, a third screw and a fourth screw, the adapter bracket is fixed to the welding gun by the first screw, the guide rod is fixed to the adapter bracket by the second screw, the rotary joint is fixed to the guide rod by the third screw, and the conductive nozzle is fixed to the rotary joint by the fourth screw.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] The utility model provides a MIG / MAG welding device with double-wire filler wire. By designing a filler wire adapter, the adapter can fix the filler wire conductive nozzle on the manual welding gun, and the position of the filler wire can be flexibly adjusted by the adapter according to actual conditions. The utility model can greatly improve the welding coverage amount and the welding quality of the weld, and is suitable for engineering application fields such as engineering machinery and pipeline welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of a MIG / MAG welding device with double-wire filler provided in an embodiment of the present invention.

[0016] Figure 2 A schematic diagram of a welding gun and an adapter provided in an embodiment of the present invention.

[0017] Figure 3 A schematic diagram of the welding process of a MIG / MAG welding device with double-wire filler provided in an embodiment of the present invention.

[0018] In the figure: 1. double-wire feeder; 2. welding gun; 3. wire filling machine; 4. adapter; 5. single-electric double-wire welding power supply; 6. wire filling power supply; 7. guide rod; 8. adapter bracket; 9. conductive nozzle joint; 10. wire feeding tube; 11. rotary joint; 12. conductive nozzle; 13. first screw; 14. second screw; 15. third screw; 16. fourth screw. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment introduces a MIG / MAG welding device with double-wire wire filling, including: a double-wire wire feeder 1 and a wire filling machine 3; the double-wire wire feeder 1 is connected to a welding gun 2, and the welding gun 2 is connected to two welding wires; wherein, the double-wire wire feeder 1 is connected to a single-electric double-wire welding power source 5, and the wire filling machine 3 is connected to a wire filling power source 6; the wire filling machine 3 is connected to an adapter 4, the adapter 4 is fixed on the nozzle of the welding gun 2, and the adapter 4 contains a third welding wire.

[0024] like Figure 1 The figure shows a schematic diagram of a MIG / MAG welding device with double-wire filler wire. The welding device mainly consists of a single-electric double-wire welding power source 5, a double-wire wire feeder 1, a filler wire power source 6, a filler wire machine 3 and a welding gun 2. The single-electric double-wire welding power source 5 can simultaneously control the double-wire wire feeder 1 and the filler wire power source 6 to complete the entire filler wire welding process. The filler wire power source 6 has a hot wire function, which can realize preheating of the filler wire and further increase the filling amount of the filler wire.

[0025] like Figure 2The figure shows a schematic diagram of a welding gun 2 and an adapter 4. The adapter 4 includes: a guide rod 7, an adapter bracket 8, a conductive nozzle joint 9, a wire feeding tube 10, a rotary joint 11, a conductive nozzle 12, a first screw 13, a second screw 14, a third screw 15, and a fourth screw 16; the adapter 4 includes a guide rod 7, an adapter bracket 8, a conductive nozzle 12 joint 9, a wire feeding tube 10, a rotary joint 11, a conductive nozzle 12, a first screw 13, a second screw 14, a third screw 15, and a fourth screw 16, the adapter bracket 8 is fixed to the welding gun 2 by the first screw 13, the guide rod 7 is fixed to the adapter bracket 8 by the second screw 14, the rotary joint 11 is arranged at one end of the guide rod 7 close to the nozzle of the welding gun 2 by the third screw 15, the conductive nozzle 12 is fixed to the rotary joint 11 by the fourth screw 16, and one end of the conductive nozzle 12 is connected to the wire filling machine 3 by the wire feeding tube 10;

[0026] The adjustment method of the appender 4 is:

[0027] (1) Take out the conductive tip 12 and install it on the conductive tip connector 9;

[0028] (2) Fix the adapter 4 above the nozzle of the welding gun 2, adjust it to a suitable angle, and tighten the first screw 13;

[0029] (3) Loosen the second screw 14, adjust the up and down position and rotation direction of the guide rod 7, and after adjusting the guide rod 7, tighten the second screw 14;

[0030] (4) Loosen the third screw 15, adjust the rotary joint 11, and adjust the thread filling angle of the conductive nozzle 12. After the adjustment is completed, tighten the third screw 15;

[0031] (5) Loosen the fourth screw 16, adjust the position of the conductive nozzle connector 9, and adjust the extension distance of the conductive nozzle 12. After the adjustment is completed, tighten the fourth screw 16.

[0032] Through the above adjustment method, accurate adjustment of the filling wire position can be achieved.

[0033] like Figure 3 The figure shows the schematic diagram of the welding process of double-wire wire filling. After the welding power supply TS_ON (gun holding), it will output the TS_ON signal to the wire filling machine 3. At the same time, the welding power supply controls the double-wire wire feeder 1 to start wire feeding. The welding wire continues to be fed until it contacts the base material and the welding wire starts arcing. At this time, the welding power supply will output the current detection signal to the wire filling machine 3. The wire filling machine 3 receives the TS_ON and current detection signals at the same time and starts to fill the wire. At this time, the entire welding system starts the wire filling welding process. Until the welding is finished, the welding power supply TS_OFF, the current detection is also OFF, the wire filling machine 3 stops feeding the wire because it cannot receive the signal, and the entire wire filling welding process ends.

[0034] The purpose of this embodiment is to achieve a stable three-wire welding process, that is, double-wire wire filling welding. This embodiment uses a single power supply to control the feeding of two welding wires, and controls the wire filling machine 3 to fill the wires at the same time, so as to achieve three-wire eutectic pool welding. The double-wire unit is powered by a single welding power supply and melts two welding wires at the same time. During the welding process, the two wires are connected in the form of a "liquid bridge" to form a larger molten droplet and a single arc to achieve stable welding. The wire filling unit is responsible for filling the third welding wire, and the tip of the filled welding wire is located directly below the double-wire arc, and the filled welding wire is melted by the heat generated by the arc. In order to ensure the accuracy of the filling wire position, a wire filling attachment 4 is specially designed. The attachment 4 can fix the wire filling conductive nozzle 12 on the manual welding gun 2, and the position of the filling wire can be flexibly adjusted by the attachment 4 according to the actual situation. The utility model can greatly improve the welding coverage and the welding quality of the weld, and is suitable for engineering application fields such as engineering machinery and pipeline welding.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A MIG / MAG welding device with double-wire filler, characterized in that: include: A double-wire feeder (1), wherein the double-wire feeder (1) is connected to a welding gun (2), and the welding gun (2) is connected to two welding wires; A wire filling machine (3), the wire filling machine (3) is connected to an adapter (4), the adapter (4) is fixed on the nozzle of a welding gun (2), and the adapter (4) contains a third welding wire.

2. The MIG / MAG welding device with double-wire filler according to claim 1, characterized in that: The double-wire wire feeder (1) is connected to a single-electric double-wire welding power source (5), and the wire filling machine (3) is connected to a wire filling power source (6).

3. The MIG / MAG welding device with double-wire filler according to claim 1, characterized in that: The two welding wires on the welding gun (2) are connected in the form of a "liquid bridge" to form a larger molten droplet and a single double-wire arc.

4. The MIG / MAG welding device with double-wire filler according to claim 3, characterized in that: The adapter (4) comprises a guide rod (7), an adapter bracket (8), a conductive nozzle joint (9), a wire feeding tube (10), a rotary joint (11) and a conductive nozzle (12); the adapter bracket (8) is fixed on the welding gun (2); the guide rod (7) is fixed on the adapter bracket (8); the rotary joint (11) is arranged at one end of the guide rod (7) close to the nozzle of the welding gun (2); the conductive nozzle (12) is fixed on the rotary joint (11); and one end of the conductive nozzle (12) is connected to the wire filling machine (3) through the wire feeding tube (10).

5. The MIG / MAG welding device with double-wire filler according to claim 4, characterized in that: The welding wire tip of the conductive nozzle (12) is located directly below the double-wire arc.

6. The MIG / MAG welding device with double-wire filler according to claim 4, characterized in that: The adapter (4) further comprises: a first screw (13), a second screw (14), a third screw (15) and a fourth screw (16); the adapter bracket (8) is fixed to the welding gun (2) by the first screw (13); the guide rod (7) is fixed to the adapter bracket (8) by the second screw (14); the rotary joint (11) is fixed to the guide rod (7) by the third screw (15); and the conductive nozzle (12) is fixed to the rotary joint (11) by the fourth screw (16).

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