Double-wire welding head

Abstract

The double-wire welding machine head comprises a welding arm, a first wire feeder, a second wire feeder and a welding gun mechanism, the welding gun mechanism comprises an insulating plate and a contact tube installation part, the first end of the insulating plate is connected with the second end of the welding arm, two wire guide wheel sets are arranged on the side face of the insulating plate in an arc-shaped mode at intervals, and wire inlets in the first ends of the wire guide wheel sets correspond to the wire feeders. The number of the conductive nozzle installation parts is two, the conductive nozzle installation parts are arranged at the lower end of the insulating plate, the upper ends of the conductive nozzle installation parts correspond to wire outlets of the second ends of the wire guide wheel sets, the wire feeder conveys welding wires to penetrate through the wire guide wheel sets to enter the conductive nozzles, and the welding arm stretches into a pipeline to conduct wire feeding welding work of inner longitudinal seams. The godet wheel set is exposed in the air, the air circulation and heat dissipation effects are good, the temperature of the godet wheel set is effectively reduced during long-time high-load work, the performance problem caused by overheating is reduced, and the service life of the godet wheel set is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially relates to double wire welding machine head. BACKGROUND

[0002] The existing double wire submerged arc welding device includes cross operation frame module, double wire feeding module and welding torch mechanism module, the welding torch mechanism module includes head fixed insulating plate and positioning guide wheel, two sets of positioning guide wheels are arranged in the inside of head fixed insulating plate, two welding wires are output by double wire feeding module, and the welding wire sequentially passes positioning guide wheel and conducting rod and finally reaches conducting nozzle, and then extends into pipeline and carries out internal vertical seam wire feeding welding, since two sets of positioning guide wheels are arranged in the inside of head fixed insulating plate, the air in the inside space is not ventilated when positioning guide wheel is closed in the inside of insulating plate, heat is accumulated in the wire guiding process of two sets of positioning guide wheels, and the heat dissipation effect is poor, positioning guide wheel is overheated, and the normal work and service life of positioning guide wheel are affected.

[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY

[0004] In view of the deficiencies of the prior art, the utility model discloses a double wire welding machine head to solve the problem that when the positioning guide wheel is closed in the inside of the insulating plate, the air in the inside space is not ventilated, heat is accumulated in the wire guiding process of the two sets of positioning guide wheels, the heat dissipation effect is poor, the positioning guide wheel is overheated, and the normal work and service life of the positioning guide wheel are affected.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] The double wire welding machine head comprises:

[0007] A welding arm;

[0008] A first wire feeder arranged on the side of the welding arm;

[0009] A second wire feeder arranged on the top of the welding arm;

[0010] A welding torch mechanism connected to the second end of the welding arm, the welding torch mechanism comprising:

[0011] An insulating plate, the first end of the insulating plate being connected to the second end of the welding arm, two sets of wire guide wheels being arranged in an arc shape on the side of the insulating plate, and the wire inlet of the first end of the wire guide wheel set corresponding to the wire feeder;

[0012] Two conducting nozzle mounting portions arranged at the lower end of the insulating plate and corresponding to the wire outlet of the second end of the wire guide wheel set at the upper end;

[0013] The wire feeder transports the welding wire through the guide wheel set to the conductive nozzle.

[0014] Further, the guide wheel set comprises a plurality of guide wheels, the side of the insulating plate is fixedly provided with a plurality of wheel shafts, the wheel shafts are staggered up and down and arranged along an arc, and the guide wheels are rotatably connected to the outer side of the wheel shafts.

[0015] Further, a spacer ring is further sleeved on the wheel shaft, and the spacer ring is located between the side of the insulating plate and the side of the guide wheel.

[0016] Further, the lower end of the insulating plate is provided with a first fixing plate, the first fixing plate has two through holes, the top end of the conductive nozzle mounting part is fixed in the through hole, and the bottom end of the conductive nozzle mounting part extends out of the through hole.

[0017] Further, the second end of the welding arm is provided with an auxiliary mechanism, the auxiliary mechanism comprises a mounting frame, the first end of the mounting frame is connected to the second end of the welding arm and located outside the insulating plate, the inside of the mounting frame is provided with a flux hopper, and the outlet of the flux hopper faces the lower end.

[0018] Further, the inside of the mounting frame is further fixedly provided with a U-shaped bolt, the U-shaped bolt is located at the second end of the flux hopper, the U-shaped bolt is transversely and horizontally arranged, the opening of the U-shaped bolt faces the insulating plate, a recovery nozzle is clamped on the opening of the U-shaped bolt, and the recovery opening of the recovery nozzle faces downward.

[0019] Further, the inside of the mounting frame is further fixedly provided with a miniature camera, the miniature camera faces downward, and the miniature camera is located at the first end of the flux hopper.

[0020] Further, the welding arm comprises a first welding arm, a cross fine adjustment seat, a cross fine adjustment device, and a second welding arm, the first end of the cross fine adjustment seat is fixedly connected to the second end of the first welding arm, the cross fine adjustment device is installed at the second end of the cross fine adjustment seat, the first end of the second welding arm is connected to the sliding block of the cross fine adjustment device, the first wire feeder bolt is connected to the side of the first welding arm, the second wire feeder bolt is connected to the top of the second welding arm, and the welding gun mechanism is arranged at the second end of the second welding arm.

[0021] Further, the bottom of the cross fine adjustment seat is further rotatably provided with a guide wheel, the outside of the second welding arm is further provided with an illuminating lamp, the illuminating lamp extends to the lower side of the insulating plate, and the illuminating lamp faces the conductive nozzle.

[0022] The beneficial effects of the embodiment of the utility model are as follows:

[0023] (I) The double-wire welding head comprises a welding arm, a first wire feeder, a second wire feeder and a welding torch mechanism, the welding torch mechanism comprises an insulating plate and a conducting nozzle mounting portion, the wire feeder conveys welding wire through a guide wheel group to the conducting nozzle, the welding arm extends into a pipeline to perform wire feeding welding work on an inner longitudinal seam, since two groups of arc-shaped guide wheel groups are arranged at intervals on the side surface of the insulating plate, the guide wheel groups are exposed to air, air flows, and the heat dissipation effect is good, the temperature of the guide wheel groups is effectively reduced during long-time high-load work, performance problems caused by overheating are reduced, and the service life of the guide wheel groups is increased.

[0024] (II) Further, the second end of the welding arm is provided with an auxiliary mechanism, the auxiliary mechanism comprises a mounting frame, the first end of the mounting frame is connected to the second end of the welding arm and located on the outside of the insulating plate, a flux hopper is arranged on the inner side of the mounting frame, the outlet of the flux hopper faces the lower end, specifically, an adjusting device such as a valve is arranged at the outlet of the flux hopper to control the flow of the flux, so as to ensure the stability and appropriateness of the flux supply, the setting of the flux hopper enables the flux to directly fall on the welding seam and cover the welding area.

[0025] (III) Further, the welding arm comprises a first welding arm, a cross fine adjustment seat, a cross fine adjustment device and a second welding arm, the first end of the cross fine adjustment seat is fixedly connected to the second end of the first welding arm, the cross fine adjustment device is installed on the second end of the cross fine adjustment seat, the first end of the second welding arm is connected to the sliding block of the cross fine adjustment device, the first wire feeder is bolted to the side surface of the first welding arm, the second wire feeder is bolted to the top of the second welding arm, and the welding torch mechanism is arranged on the second end of the second welding arm, the setting of the cross fine adjustment device enables the welding torch to be accurately positioned in the horizontal plane, ensures that the welding position is completely aligned with the welding seam, ensures that the welding torch and the welding seam are always at the optimal distance and angle, improves the welding precision, and at the same time, the cross fine adjustment device provides greater flexibility for the entire welding arm, so that the welding arm can meet the welding requirements of complex workpieces, such as non-linear welding seams or difficult-to-access welding positions. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view structural schematic diagram of the double-wire welding head of the utility model.

[0027] Figure 2 It is a front view structural schematic diagram of the second welding arm in the double-wire welding head of the utility model.

[0028] Figure 3 It is a top view structural schematic diagram of the second welding arm in the double-wire welding head of the utility model.

[0029] Figure 4 It is Figure 3 It is an enlarged view at A.

[0030] In the figure:

[0031] 1, welding arm; 11, first welding arm; 12, cross fine adjustment seat; 13, cross fine adjustment device; 14, second welding arm; 15, guide wheel; 16, illuminating lamp; 2, first wire feeder; 3, second wire feeder; 4, welding gun mechanism; 41, insulating plate; 42, wire guide wheel set; 421, wire guide wheel; 422, wheel shaft; 423, spacer ring; 43, first fixed plate; 44, electrically conductive nozzle mounting portion; 45, second fixed plate; 46, hole; 5, auxiliary mechanism; 51, mounting frame; 52, flux hopper; 53, U-shaped bolt; 54, recovery nozzle; 55, miniature camera. DETAILED DESCRIPTION

[0032] The specific embodiments of the present application will be described below with reference to the accompanying drawings.

[0033] In order to make the purpose, technical scheme and advantages of the present application more clear, the device proposed by the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the present application will be more clear. It should be noted that the drawings are greatly simplified and all use non-precise proportions, only to facilitate and clearly assist the purpose of explaining the embodiments of the present application. In order to make the purpose, features and advantages of the present application more obvious and easy to understand, please refer to the accompanying drawings. It should be noted that the structure, proportion, size and the like shown in the drawings attached to the present specification are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the limiting conditions of the implementation of the present application, so they do not have the technical essence, any modification of the structure, change of the proportion relationship or adjustment of the size, as long as it does not affect the effect and purpose that can be achieved by the present application, it should still fall within the scope of the technical content disclosed by the present application.

[0034] Embodiment:

[0035] Figure 1 is a front view structural schematic diagram of the double-wire welding head of the present application. As Figure 1As shown, the dual-wire welding head includes a welding arm 1, a first wire feeder 2, a second wire feeder 3, and a welding gun mechanism 4. The first wire feeder 2 is located at the first end of the side of the welding arm 1, and the second wire feeder 3 is located at the second end of the top of the welding arm 1. Specifically, the welding wire output by the first wire feeder 2 is a 4mm diameter welding wire, and the welding wire output by the second wire feeder 3 is a 2.5mm diameter welding wire. The gun mechanism 4 is connected to the second end of the welding arm 1. The fact that the first wire feeder 2 and the second wire feeder 3 are set on different planes can avoid interference and entanglement between the welding wires. During the wire feeding process, the welding wires may cross or interfere with each other, especially in high-speed or complex welding tasks. Separating them can reduce interference. At the same time, the design of separating the first wire feeder 2 and the second wire feeder 3 makes the structure of the welding system more stable, which can better support and balance the two wire feeders and their related components, facilitate long-term operation, and improve stability under high-load working conditions.

[0036] Figure 2 This is a front view structural diagram of the second welding arm in the dual-wire welding head of this utility model. Figure 3 This is a top view of the second welding arm in the dual-wire welding head of this utility model. Figure 4 for Figure 3 A magnified view at point A. (See image below.) Figures 2 to 4 As shown, the welding torch mechanism 4 includes an insulating plate 41 and two conductive nozzle mounting parts 44. For example, the insulating plate 41 is made of bakelite. The first end of the insulating plate 41 is connected to the second end of the welding arm 1, and two sets of wire guide wheel groups 42 are arranged at arc intervals on the side of the insulating plate 41. For example, the wire guide wheel group 42 includes a plurality of wire guide wheels 421, and a plurality of wheel axles 422 are fixedly arranged on the side of the insulating plate 41. The plurality of wheel axles 422 are staggered vertically and arranged along an arc, and the wire guide wheels 421 are rotatably connected to the outside of the wheel axles 422. The inlet of the first end of the guide wheel assembly 42 corresponds to the wire feeder. For example, the wire feeder also includes a guide tube, and the output end of the wire feeder is connected to the first end of the guide tube. A second fixing plate 45 is also provided on the outer side of the first end of the insulating plate 41. The second end of the guide tube of the first wire feeder 2 is fixed on the second fixing plate 45. The second fixing plate 45 has a through outlet, which connects the guide tube of the first wire feeder 2 with the inlet of the guide wheel assembly 42. The conductive tip mounting part 44 is provided at the lower end of the insulating plate 41, and its upper end corresponds to the outlet of the second end of the guide wheel assembly 42. For example, a first fixing plate 43 is provided at the lower end of the insulating plate 41. The first fixing plate 43 has two through holes 46. The top end of the conductive tip mounting part 44 is fixed in the hole 46, and the bottom end of the conductive tip mounting part 44 extends out of the hole 46. The conductive tip is mounted on the bottom end of the conductive tip mounting part 44. The wire feeder delivers the welding wire through the wire guide wheel assembly 42, the hole 46, and the conductive nozzle mounting part 44 in sequence to the conductive nozzle.

[0037] like Figure 4As shown, further, the axle 422 is sleeved with a spacer 423 between the side of the insulating plate 41 and the side of the wire guide wheel 421. The spacer 423 is arranged between the insulating plate 41 and the wire guide wheel 421 to prevent the wire guide wheel 421 from directly contacting the side wall, reduce the abrasion caused by friction, and ensure that the wire guide wheel 421 can rotate freely without being interfered or resisted by the side wall.

[0038] As shown in the drawings, Figure 3 Further, the second end of the welding arm 1 is provided with an auxiliary mechanism 5. The auxiliary mechanism 5 includes a mounting frame 51. The first end of the mounting frame 51 is connected to the second end of the welding arm 1 and located outside the insulating plate 41. A flux hopper 52 is arranged inside the mounting frame 51. The outlet of the flux hopper 52 faces the lower end. Specifically, an adjusting device such as a valve is arranged at the outlet of the flux hopper 52 to control the flux flow, so as to ensure the stability and appropriateness of the flux supply. By arranging the flux hopper 52, the flux can directly fall on the weld to cover the welding area.

[0039] As shown in the drawings, Figure 3 Further, a U-shaped bolt 53 is fixedly arranged inside the mounting frame 51. The U-shaped bolt 53 is located at the second end of the flux hopper 52. The U-shaped bolt 53 is arranged horizontally. The opening of the U-shaped bolt 53 faces the insulating plate 41. A recovery nozzle 54 is clamped to the opening of the U-shaped bolt 53. The recovery port of the recovery nozzle 54 faces downward. The top of the recovery nozzle 54 is connected to a recovery device. The recovery device automatically sucks the un-melted flux through the recovery nozzle 54. By sucking the un-melted flux through the recovery nozzle 54, the un-melted flux is prevented from scattering outside the welding area, thereby reducing the workload of subsequent cleaning and improving the neatness and efficiency of the welding process.

[0040] As shown in the drawings, Figure 3 Further, a miniature camera 55 is fixedly arranged inside the mounting frame 51. The miniature camera 55 faces downward. The miniature camera 55 is located at the first end of the flux hopper 52. By arranging the miniature camera 55, the pictures of the welding process can be captured in real time, including the shape of the electric arc, the formation of the weld, and the distribution of the flux, so that the workers can timely adjust the welding position and the start and stop of the welding.

[0041] As shown in the drawings, Figure 1As shown, further, the welding arm 1 includes a first welding arm 11, a cross fine adjustment seat 12, a cross fine adjustment device 13, and a second welding arm 14. The first end of the cross fine adjustment seat 12 is fixedly connected to the second end of the first welding arm 11. The cross fine adjustment device 13 is installed on the second end of the cross fine adjustment seat 12. The first end of the second welding arm 14 is connected to the sliding block of the cross fine adjustment device 13. The first wire feeder 2 is bolted to the side of the first welding arm 11. The second wire feeder 3 is bolted to the top of the second welding arm 14. The welding gun mechanism 4 is provided at the second end of the second welding arm 14. The cross fine adjustment device 13 is provided, so that the welding gun is accurately positioned in the horizontal plane, ensuring that the welding position is completely aligned with the weld, ensuring that the welding gun and the weld are always at the optimal distance and angle, and improving the welding precision. At the same time, the cross fine adjustment device 13 provides greater flexibility for the entire welding arm 1, enabling it to meet the welding needs of complex workpieces, such as non-linear welds or difficult-to-access welding positions.

[0042] As shown in Figure 1 Further, the bottom of the cross fine adjustment seat 12 is also rotatably provided with a guide wheel 15. By providing the guide wheel 15, the welding arm 1 moves more stably during movement, reducing the impact of vibration or deviation on welding precision, especially when welding long straight seams. Smooth movement can ensure the stability of the welding trajectory. At the same time, the guide wheel 15 shares part of the weight of the welding arm 1, reducing the load of the welding arm 1 on the support frame, improving the service life and reliability of the welding equipment. The outside of the second welding arm 14 is also provided with an illuminating lamp 16, which extends below the insulating plate 41 and is directed towards the conducting nozzle. Since the brightness inside the pipeline is low, by providing the illuminating lamp 16, the operator can more accurately observe and align the welding gun and the weld through the miniature camera 55, avoiding welding position deviation.

[0043] When the embodiment is in operation:

[0044] Start the first wire feeder 2 and the second wire feeder 3. The first wire feeder 2 and the second wire feeder 3 deliver the welding wire through the guide tube and the guide wheel set 42 into the hole 46. The guide wheel 421 rotates outside the insulating plate 41 as the welding wire elongates. The welding wire enters the conducting nozzle after passing through the hole 46 into the conducting nozzle mounting portion 44. The first welding arm 11 and the second welding arm 14 extend into the pipeline to be welded. The guide wheel 15 rolls along the inner wall of the pipeline. The conducting nozzle is aligned with the longitudinal seam to be welded. Start the illuminating lamp 16 and the miniature camera 55. The flux flows out of the flux hopper 52 and is evenly deposited on the longitudinal seam. The welding wire is fed into the welding arc area through the conducting nozzle for submerged arc welding operation. Start the recovery device. The recovery nozzle 54 sucks and recovers the un-melted flux.

[0045] In this embodiment, the two groups of guide wire roller sets 42 are arranged in arc shape and are spaced apart on the side of the insulating plate 41, the guide wire roller sets 42 are exposed to air, air flows through, and the heat dissipation effect is good, so that the temperature of the guide wire roller sets 42 is effectively reduced, the performance problem caused by overheating is reduced, and the service life of the guide wire roller sets 42 is increased.

[0046] The technical features of the above-described embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present disclosure.

[0047] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A twin wire welding head characterized by, The utility model relates to a welding arm (1); First wire feeder (2), first wire feeder (2) is located at the side of welding arm (1); Second wire feeder (3), second wire feeder (3) is located at the top of welding arm (1); Welding torch mechanism (4) is connected to the second end of welding arm (1), and welding torch mechanism (4) comprises: Insulating plate (41), the first end of insulating plate (41) is connected to the second end of welding arm (1), and two groups of wire guide wheel groups (42) are arranged in the arc shape on the side of insulating plate (41), and the wire inlet of the first end of wire guide wheel group (42) corresponds to the wire feeder; Conductive nozzle mounting portion (44) has two, is arranged in the lower end of insulating plate (41), and the wire outlet of the second end of wire guide wheel group (42) corresponds to the upper end; Wherein, wire feeder transports welding wire to the conductive nozzle through wire guide wheel group (42). Wire guide wheel group (42) comprises a plurality of wire guide wheels (421), a plurality of wheel shafts (422) are fixedly arranged on the side of insulating plate (41), a plurality of wheel shafts (422) are staggered up and down and arranged in the arc shape, and the wire guide wheel (421) is rotatably connected to the outside of wheel shaft (422).

2. The two-wire welding torch of claim 1, wherein: The wheel shaft (422) is also sleeved with a spacer (423), and the spacer (423) is located between the insulating plate (41) and the wire guide wheel (421).

3. The two-wire welding torch of claim 2, wherein: The lower end of the insulating plate (41) is provided with a first fixed plate (43), the first fixed plate (43) has two through holes (46), the top end of the conductive nozzle mounting portion (44) is fixed in the hole (46), and the bottom end of the conductive nozzle mounting portion (44) protrudes from the hole (46).

4. The two-wire welding torch of claim 1, wherein: The second end of the welding arm (1) is provided with an auxiliary mechanism (5), the auxiliary mechanism (5) comprises a mounting frame (51), the first end of the mounting frame (51) is connected to the second end of the welding arm (1) and located outside the insulating plate (41), the inside of the mounting frame (51) is provided with a flux hopper (52), and the outlet of the flux hopper (52) faces the lower end.

5. The two-wire welder head of claim 1, wherein: The inside of the mounting frame (51) is also fixedly provided with a U-shaped bolt (53), the U-shaped bolt (53) is located at the second end of the flux hopper (52), the U-shaped bolt (53) is longitudinally and horizontally arranged, the opening of the U-shaped bolt (53) faces the insulating plate (41), the opening of the U-shaped bolt (53) is clamped with a recovery nozzle (54), and the recovery port of the recovery nozzle (54) faces downward.

6. The two-wire welding torch of claim 5, wherein: The inside of the mounting frame (51) is also fixedly provided with a micro camera (55), the micro camera (55) faces downward, and the micro camera (55) is located at the first end of the flux hopper (52).

7. The two-wire welding torch of claim 5, wherein: ​ 8. The two-wire welder head of claim 1, wherein: The welding arm (1) comprises a first welding arm (11), a cross fine adjustment seat (12), a cross fine adjustment device (13) and a second welding arm (14), the first end of the cross fine adjustment seat (12) is fixedly connected with the second end of the first welding arm (11), the cross fine adjustment device (13) is installed on the second end of the cross fine adjustment seat (12), the first end of the second welding arm (14) is connected with a sliding block of the cross fine adjustment device (13), the first wire feeder (2) is bolted on the side of the first welding arm (11), the second wire feeder (3) is bolted on the top of the second welding arm (14), and the welding gun mechanism (4) is arranged on the second end of the second welding arm (14).

9. The two-wire welding torch of claim 8, wherein: The bottom of the cross fine adjustment seat (12) is also rotatably provided with a guide wheel (15), the outer side of the second welding arm (14) is also provided with an illuminating lamp (16), the illuminating lamp (16) extends below the insulating plate (41) and the illuminating lamp (16) faces the conductive nozzle.

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