Rotary double-wire welding gun

Abstract

The utility model relates to the technical field of welding, in particular to a rotary type double-wire welding gun which comprises a connecting plate, an upper clamping block and a lower clamping block, the connecting plate is in butt joint with two gun barrels, the upper clamping block and the lower clamping block are installed on the connecting plate, and a rotating portion corresponding to the gun barrels is rotatably arranged between the upper clamping block and the lower clamping block and connected with the upper clamping block and the lower clamping block. The rotating part is connected with an output part through a movable hole formed in the lower clamping block, an output channel axially formed in the output part is connected with a guide channel formed in the rotating part so that a welding wire guided into the guide channel can be sent out from the output channel, and the guide channel is of a horn-shaped structure. Welding wires in the gun barrel are fed into the guide channel through an inlet formed in the upper clamping block, the output part is in butt joint with a contact tube so that the welding wires can be guided out for welding, the output part is pushed to enable the rotating part to rotate the welding wires to be close to each other, and the distance between the welding wires can be adjusted through the welding wire feeding device.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a rotary double-wire welding gun. Background Art

[0002] The biggest feature of the double-wire welding gun is that two independent welding power sources coordinately control the two welding wires in the same welding gun to perform coordinated welding to improve efficiency. In the actual welding process, different welding wire spacings correspond to different welding conditions. Using inappropriate welding wire spacing will not only affect the welding quality, but in severe cases it may even cause welding defects, resulting in the entire welding workpiece being scrapped and causing huge losses.

[0003] When adjusting the wire spacing of an existing twin-wire welding gun, the entire gun head needs to be replaced, and the gun head accounts for more than 80% of the cost of the twin-wire welding gun. When it is necessary to try out multiple wire spacings for a specific working condition, multiple gun heads with different wire spacings may be required. Utility Model Content

[0004] The utility model aims to solve the above defects and provides a rotary double-wire welding gun.

[0005] In order to overcome the defects existing in the background technology, the technical solution adopted by the utility model to solve its technical problems is: a rotary double-wire welding gun, comprising a connecting plate connected to two gun barrels, an upper clamping block and a lower clamping block installed on the connecting plate, a rotating part corresponding to the gun barrel is rotatably arranged between the upper clamping block and the lower clamping block and the two are connected to each other, the rotating part is connected to the output part through a movable hole opened on the lower clamping block, the output channel axially opened in the output part is connected to the guide channel opened in the rotating part so that the welding wire introduced into the guide channel is sent out from the output channel, the guide channel is a trumpet-shaped structure, the welding wire in the gun barrel is sent into the guide channel through the entrance opened on the upper clamping block, the output part is connected to the conductive nozzle so that the welding wire is led out for welding, and the output part is pushed to make the rotating welding wire of the rotating part move toward each other.

[0006] A further improvement includes that the angle between the central axis of the output channel and the central axis of the guide channel is less than 180 degrees.

[0007] A further improvement includes connecting the connecting plate to the nozzle so that the conductive nozzle can be accommodated in the nozzle.

[0008] A further improvement includes that the receiving grooves respectively opened on the mating surfaces of the upper clamping block and the lower clamping block are connected to form a cavity for loading the rotating part.

[0009] A further improvement includes that the rotating part is a cylinder or a sphere.

[0010] A further improvement includes providing a rough layer on the inner wall of the cavity to increase friction.

[0011] A further improvement includes that the upper clamping block is detachably connected to the lower clamping block.

[0012] A further improvement comprises observation holes corresponding to the rotating part being respectively opened on the mating surfaces of the upper clamp block and the lower clamp block, the observation holes being in communication with the cavity, an indicator mark being provided on the surface of the rotating part, and the indicator mark and the observation hole being located on the same straight line as the rotation center axis of the rotating part, and angle marks being provided on the upper clamp block and the lower clamp block in the circumferential direction with the center of the observation hole as the center.

[0013] A further improvement includes providing a guide post on the fitting surface of the upper clamping block, and the guide post is matched and docked with a positioning hole provided on the fitting surface of the lower clamping block.

[0014] A further improvement includes providing a wear-resistant layer on the inner walls of the guide channel and the output channel respectively.

[0015] The beneficial effect of the utility model is that the spacing between welding wires can be adjusted through the design. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a front cross-sectional view of the utility model;

[0018] Figure 2 It is the internal structure in the utility model;

[0019] Figure 3 It is a cross-sectional view of the rotating part and the conveying part in the utility model;

[0020] In the figure, 1-movable hole, 2-positioning hole, 3-nozzle, 4-connecting plate, 5-accommodating groove, 6-barrel, 7-entry port, 8-upper clamping block, 9-guide column, 10-lower clamping block, 11-conductive nozzle, 12-observation hole, 13-rotating part, 14-output part, 15-guide channel, 16-output channel. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. The embodiments in the basic utility model and all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] according to Figure 1 , Figure 2 and Figure 3 As shown, a rotary double-wire welding gun comprises a connecting plate 4 connected to two gun barrels 6, an upper clamping block 8 and a lower clamping block 10 installed on the connecting plate 4, a rotating part 13 corresponding to the gun barrel 6 is rotatably arranged between the upper clamping block 8 and the lower clamping block 10 and the two are connected to each other, the rotating part 13 is connected to the output part 14 through the movable hole 1 provided on the lower clamping block 10, an output channel 16 axially provided in the output part 14 is connected to the guide channel 15 provided in the rotating part 13 so that the welding wire introduced into the guide channel 15 is sent out from the output channel 16, the guide channel 15 is a trumpet-shaped structure, the welding wire in the gun barrel 6 is sent into the guide channel 15 through the inlet 7 provided on the upper clamping block 8, the output part 14 is connected to the conductive nozzle 11 so that the welding wire is led out for welding, and the output part 14 is pushed to make the rotating part 13 rotate the welding wires toward each other so as to change the output angle, thereby realizing the adjustment of the spacing between the welding wires.

[0023] The angle between the central axis of the output channel 16 and the central axis of the guide channel 15 is less than 180 degrees, thereby increasing the output angle of the output portion 14 and further making the two welding wires tilt toward each other to achieve adjustment of the spacing between the welding wires.

[0024] The connecting plate 4 is connected to the nozzle 3 so that the conductive nozzle 11 is accommodated in the nozzle 3 , thereby protecting the upper clamping block 8 , the conductive nozzle 11 , and the lower clamping block 10 .

[0025] The receiving grooves 5 respectively provided on the mating surfaces of the upper clamping block 8 and the lower clamping block 10 are connected to form a cavity for loading the rotating part 13, so that the rotating part 13 can rotate in the cavity.

[0026] The rotating part 13 is a cylinder or a sphere. This structure facilitates the rotating part 13 to rotate in the cavity.

[0027] The inner wall of the cavity is provided with a rough layer for increasing friction, and the rough layer can increase the difficulty of rotating the rotating part 13, ensuring that the rotating part 13 will not move abnormally when the welding wire is introduced into the guide channel 15, thereby ensuring stability during welding.

[0028] The upper clamp block 8 is detachably connected to the lower clamp block 10 . The rotating part 13 can be replaced after the upper clamp block 8 and the lower clamp block 10 are disassembled, specifically, connected by bolts.

[0029] Observation holes 12 corresponding to the rotating part 13 are respectively provided on the fitting surfaces of the upper clamp block 8 and the lower clamp block 10, and the observation hole 12 is connected to the cavity. An indicator mark is provided on the surface of the rotating part 13, and the indicator mark and the observation hole 12 are located on the same straight line with the rotation center axis of the rotating part 13. Angle marks are circumferentially arranged on the upper clamp block 8 and the lower clamp block 10 with the center of the observation hole 12 as the center of the circle. Through the observation hole 12, it can be observed that the indicator mark points to the angle mark, thereby determining the rotation angle of the rotating part 13.

[0030] A guide post 9 is provided on the fitting surface of the upper clamping block 8, and the guide post 9 is matched and docked with the positioning hole 2 provided on the fitting surface of the lower clamping block 10 to ensure the accuracy of the position of the clamping plate after docking and installation.

[0031] The inner walls of the guide channel 15 and the output channel 16 are respectively provided with wear-resistant layers, which are beneficial to prolonging the service life of the rotating part 13 and reducing the wear of the inner walls of the guide channel 15 and the output channel 16 by the welding wire.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A rotary twin-wire welding gun, characterized in that: The invention comprises a connecting plate (4) connected to two gun barrels (6), an upper clamping block (8) and a lower clamping block (10) mounted on the connecting plate (4); a rotating portion (13) corresponding to the gun barrels (6) is rotatably arranged between the upper clamping block (8) and the lower clamping block (10) and the two are connected to each other; the rotating portion (13) is connected to an output portion (14) through a movable hole (1) provided on the lower clamping block (10); an output channel (16) axially provided in the output portion (14) is connected to an output channel (16) provided in the rotating portion (13) The guide channel (15) is connected to the guide channel (15) so that the welding wire introduced into the guide channel (15) is sent out from the output channel (16); the guide channel (15) is a trumpet-shaped structure; the welding wire in the barrel (6) is sent into the guide channel (15) through the inlet (7) opened on the upper clamping block (8); the output part (14) is connected to the conductive nozzle (11) so that the welding wire is led out for welding; and the output part (14) is pushed so that the rotating part (13) rotates the welding wire toward each other.

2. A rotary twin-wire welding gun as claimed in claim 1, characterized in that: The angle between the central axis of the output channel (16) and the central axis of the guide channel (15) is less than 180 degrees.

3. A rotary twin-wire welding gun as claimed in claim 2, characterized in that: The connecting plate (4) is connected to the nozzle (3) so that the conductive nozzle (11) is accommodated in the nozzle (3).

4. A rotary twin-wire welding gun as claimed in claim 3, characterized in that: The receiving grooves (5) respectively provided on the mating surfaces of the upper clamping block (8) and the lower clamping block (10) are butted against each other to form a cavity for loading the rotating part (13).

5. A rotary twin-wire welding gun as claimed in claim 4, characterized in that: The rotating part (13) is a cylinder or a sphere.

6. A rotary twin-wire welding gun as claimed in claim 5, characterized in that: A rough layer for increasing friction is arranged on the inner wall of the cavity.

7. A rotary twin-wire welding gun as claimed in claim 6, characterized in that: The upper clamping block (8) and the lower clamping block (10) are detachably connected.

8. A rotary twin-wire welding gun as claimed in claim 7, characterized in that: Observation holes (12) corresponding to the rotating part (13) are respectively formed on the mating surfaces of the upper clamping block (8) and the lower clamping block (10), the observation holes (12) being in communication with the cavity, an indicator mark is provided on the surface of the rotating part (13), and the indicator mark and the observation hole (12) are located on the same straight line as the central axis of rotation of the rotating part (13), and angle marks are provided on the upper clamping block (8) and the lower clamping block (10) in a circumferential direction with the center of the observation hole (12) as the center.

9. A rotary twin-wire welding gun according to any one of claims 6 or 7, characterized in that: A guide column (9) is provided on the fitting surface of the upper clamping block (8), and the guide column (9) is matched and docked with a positioning hole (2) provided on the fitting surface of the lower clamping block (10).

10. A rotary twin-wire welding gun as claimed in claim 9, characterized in that: The inner walls of the guide channel (15) and the output channel (16) are respectively provided with a wear-resistant layer.

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