Gantry three-wire external welding machine

Abstract

The gantry three-wire external welding machine comprises rails, a gantry, a driving mechanism and a welding arm, a workpiece to be welded is placed between the two rails, a gear is rotated, the gear is meshed with a rack, a first roller moves downwards or upwards in the vertical direction of a first sliding rail, and the height of a welding mechanism at the front end of the welding arm is matched with the height of a workpiece welding seam; a rack at the rear end of a welding arm and a gear on the front side of a driving mechanism are arranged, and a first rack is meshed with a first gear, so that the welding arm moves up and down according to the height of the welding seam of the workpiece; the time for manually replacing the roller carrier is shortened, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to welding technical field especially relates to gantry three wire outer welding machine. BACKGROUND

[0002] The existing gantry outer welding machine includes gantry component, drive mechanism, welding arm and welding mechanism, the workpiece to be welded is placed at the lower end of the walking gantry by the staff, the drive mechanism is pushed, the drive mechanism moves left or right along the crossbeam of the gantry, so that the welding torch of the welding mechanism is aligned with the weld position of the workpiece, the gantry is started, and the gantry walks along the length direction of the workpiece, since the welding mechanism height of the gantry outer welding machine is fixed, the welding torch cannot weld workpieces of different diameters, the roller frame at the bottom of the workpiece needs to be replaced, resulting in low work efficiency and increased labor cost.

[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 gantry three wire outer welding machine to solve the welding mechanism height of the gantry outer welding machine is fixed, the welding torch cannot weld workpieces of different diameters, resulting in low work efficiency and increased labor cost.

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

[0006] The gantry three wire outer welding machine comprises:

[0007] Two rails are symmetrically arranged on the ground;

[0008] A gantry is slidably arranged at the bottom of the two rails;

[0009] A welding arm is provided with a welding mechanism at the front end, first sliding rails are arranged on the left and right sides of the welding arm, a rack is arranged at the rear end of the welding arm, and the rack is arranged along the length direction of the welding arm;

[0010] A drive mechanism is arranged at the front side of the top end of the gantry, first rollers are rotatably arranged at the front side of the drive mechanism, the first rollers have two parallel rows, each row has at least two first rollers, the first sliding rails are clamped between the two rows of first rollers, a gear is rotatably arranged at the front end of the drive mechanism, and the gear is engaged with the rack.

[0011] Further, the gantry includes four columns and a top plate, two columns are respectively connected to the left and right sides of the front end of the bottom of the top plate, and the other two columns are respectively connected to the left and right sides of the rear end of the bottom of the top plate, the front end of the top plate is provided with a cross beam, the upper and lower ends of the cross beam are provided with second sliding rails, the rear side of the driving mechanism is rotatably provided with a plurality of second rollers, at least two second rollers are arranged on the left and right sides of the upper end of the driving mechanism, and at least two second rollers are arranged on the left and right sides of the lower end of the driving mechanism, a sliding groove is formed in the second roller, and the upper and lower ends of the second sliding rail are respectively clamped into the sliding groove.

[0012] Further, the upper end of the driving mechanism is also provided with a first motor, the output end of the first motor is connected with the gear, and the first motor drives the gear to rotate.

[0013] Further, the welding mechanism further includes three welding guns, the three welding guns are arranged on the front side of the lower end of the welding arm in front of and behind the welding arm, and the gun heads of the welding guns are directed to the same welding point.

[0014] Further, the gantry three-wire external welding machine further includes three control boxes, the three control boxes are arranged on the outside of the columns of the gantry in an upper and lower interval, and the three control boxes are respectively electrically connected with the three welding guns.

[0015] Further, the welding mechanism further includes a cross fine adjustment mechanism, the cross fine adjustment mechanism is arranged on the front side of the lower end of the welding arm, the welding mechanism further includes a connecting rod, the connecting rod is arranged on the sliding block at the front end of the cross fine adjustment mechanism along the length direction of the track, and the three welding guns are connected to the outside of the connecting rod in front of and behind the connecting rod.

[0016] Further, the gantry three-wire external welding machine further includes a flux assembly, the flux assembly includes a solder box, a feeding part and a flux hopper, the solder box is arranged at the top end of the gantry, the feeding part is arranged on the front side of the upper end of the welding arm, and the flux hopper is arranged on the front side of the welding arm and below the feeding part, and the solder box, the feeding part and the flux hopper are sequentially connected by pipelines.

[0017] Further, the gantry three-wire external welding machine further includes a wire guide assembly, the wire guide assembly includes three wire guide wheel plates and three wire guide pipes, the three wire guide wheel plates are arranged at the top end of the gantry, three welding wires pass through the three wire guide pipes into the gun heads of the three welding guns from the three wire guide wheel plates, and a wire guide pipe support is arranged on the front side of the welding arm, and the three wire guide pipes pass through and are clamped in the wire guide pipe support.

[0018] Further, the two third rollers are rotatably arranged at the bottom ends of the two sides of the portal frame, the track is clamped into the third rollers, and the third rollers roll on the track.

[0019] Further, the portal frame is provided with a drag chain along the length direction of the track, and a layer of drag chain grooves and two layers of drag chain grooves are arranged on the outer side of the track along the length direction of the track.

[0020] The embodiment of the utility model has the following beneficial effects:

[0021] (1) The portal three-wire external welding machine comprises a track, a portal frame, a driving mechanism and a welding arm, a workpiece to be welded is placed between the two tracks, a rotating gear drives a rack and a welding arm to lift, a first roller slides along the surface of a first sliding rail, the welding arm drives the welding mechanism to lift, the height of the welding mechanism at the front end of the welding arm matches the height of the weld of the workpiece, the welding gun of the welding mechanism is aligned with the weld of the workpiece, and finally the portal frame is driven to operate the weld along the track on the ground, thereby reducing the time for manually replacing the roller frame and improving work efficiency.

[0022] Meanwhile, the first roller and the first sliding rail are arranged, the first sliding rail is clamped between the two rows of first rollers, the welding arm is prevented from shaking when moving up and down, the welding arm is prevented from being separated from the driving mechanism, and the stability of the welding arm when moving is improved.

[0023] (2) Further, the second sliding rail is arranged at the upper and lower ends of the cross beam, a plurality of second rollers are rotatably arranged at the rear side of the driving mechanism, at least two second rollers are arranged at the left and right sides of the upper end of the driving mechanism, at least two second rollers are arranged at the left and right sides of the lower end of the driving mechanism, the second sliding rail is clamped into the second rollers, and the second rollers are slidingly connected to the second sliding rail.

[0024] Further, the welding mechanism further comprises three welding guns, the three welding guns are arranged on the front side of the lower end of the welding arm in a front-rear interval, and the gun heads of the welding guns face the same welding point, so that heat and welding material can be applied on the welding point at the same time or continuously, ensuring the uniformity and quality of the weld, and through the uniform distribution of heat and welding material, the deformation and stress concentration in the welding process can be reduced, thereby improving the strength and durability of the welded joint.

[0025] Meanwhile, the gantry three-wire external welding machine further comprises three control boxes, the three control boxes are arranged on the outer side of the column of the gantry in an up-down interval, the three control boxes are electrically connected with the three welding guns respectively, and the control boxes are used for setting and adjusting welding parameters of each welding gun, such as welding current, welding voltage, wire feeding speed and welding speed, so that the stability and consistency in the welding process can be ensured, and different welding requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a top view structural schematic diagram of the gantry three-wire external welding machine.

[0027] Figure 2 It is a side view structural schematic diagram of the gantry three-wire external welding machine.

[0028] Figure 3 It is Figure 2 It is an enlarged view at A.

[0029] Figure 4 It is a front view structural schematic diagram of the gantry three-wire external welding machine.

[0030] In the drawings:

[0031] 1, track; 2, gantry; 21, top plate; 22, column; 23, cross beam; 24, third roller; 25, second motor; 3, welding arm; 4, driving mechanism; 5, first roller; 6, first sliding rail; 7, second sliding rail; 8, second roller; 9, first motor; 10, welding mechanism; 101, welding gun; 102, cross fine adjustment mechanism; 103, connecting rod; 11, feeding part; 12, flux hopper; 13, wire guide wheel disc; 14, one layer of tow chain groove; 15, two layers of tow chain groove; 16, workpiece; 17, wire guide pipe support; 18, control box; 19, solder box. DETAILED DESCRIPTION

[0032] The specific implementation manner of the utility model will be described below in combination with the drawings.

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the device proposed by this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer according to the following description. It should be noted that the accompanying drawings are in a very simplified form and use non-precise proportions, only used to conveniently and clearly assist in illustrating the purpose of the embodiments of this utility model. Please refer to the accompanying drawings to make the objectives, features, and advantages of this utility model more apparent and understandable. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are only used to complement the content disclosed in the specification, for those skilled in the art to understand and read, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0034] Example:

[0035] Figure 1 This is a top view of the gantry three-wire external welding machine of this utility model. Figure 2 This is a side view of the gantry three-wire external welding machine of this utility model. Figure 3 for Figure 1 A magnified view at point A. (See image below.) Figures 1-3 As shown, the gantry three-wire welding machine includes two tracks 1, a gantry frame 2, a welding arm 3, and a drive mechanism 4. The two tracks 1 are symmetrically arranged on the ground. The bottom end of the gantry frame 2 is slidably mounted on the two tracks 1. The gantry frame 2 includes four columns 22 and a top plate 21. Two columns 22 are respectively connected to the left and right sides of the bottom front end of the top plate 21, and the other two columns 22 are respectively connected to the left and right sides of the bottom rear end of the top plate 21. A crossbeam 23 is provided at the front end of the top plate 21. For example, a third roller 24 is rotatably mounted at the bottom end of the columns 22. The track 1 is inserted into the third roller 24, and the third roller 24 is slidably connected to the track 1 and rolls. A second motor 25 is also mounted on the side of the gantry frame 2, and the output end of the second motor 25 is connected to the third roller 24. The welding arm 3 has a welding mechanism 10 at its front end, and first slide rails 6 on its left and right sides. The welding arm 3 has a rack at its rear end, which is set along the length of the welding arm 3. The drive mechanism 4 is set on the crossbeam 23 at the front of the top of the gantry frame 2. The drive mechanism 4 has a first roller 5 rotatably set on its front side. The first roller 5 has two parallel rows, with at least two in each row. The first slide rails 6 are engaged between the two rows of first rollers 5 on both sides. The drive mechanism 4 has a gear rotatably set on its front end, which meshes with the rack.

[0036] Figure 4 This is a front view structural diagram of the gantry three-wire external welding machine of this utility model. Figures 3-4As shown, further, the upper and lower ends of the cross beam 23 are provided with second sliding rails 7, the rear side of the driving mechanism 4 is rotatably provided with four second rollers 8, two second rollers 8 are arranged on the left and right sides of the upper end of the driving mechanism 4, and two second rollers 8 are arranged on the left and right sides of the lower end of the driving mechanism 4. The upper and lower ends of the second sliding rails 7 are clamped into the second rollers 8. Through the sliding cooperation of the second sliding rails 7 and the second rollers 8, the driving mechanism 4 moves left and right on the cross beam 23. The second sliding rails 7 are clamped into the second rollers 8, which provides additional support and balance for the driving mechanism 4 on the cross beam 23, ensuring the stability of the driving mechanism 4 during left and right movement.

[0037] As shown in FIG. 1, Figure 2 As shown, further, the upper end of the driving mechanism 4 is also provided with a first motor 9, for example, the first motor 9 adopts an alternating current motor, a stepping motor or a brushless direct current motor, etc. The output end of the first motor 9 is connected to a gear. The first motor 9 drives the gear to rotate. Specifically, the output end of the first motor 9 is connected to a transmission assembly. The transmission assembly includes two transmission gears and a shaft. The output end of the first motor 9 is connected to one of the transmission gears. The first end of the shaft is connected to the other transmission gear. The second end of the shaft passes through the driving mechanism 4 and is connected to the gear. The two transmission gears are engaged. The first motor 9 drives the transmission gears to rotate, so that the gear on the second end of the shaft rotates synchronously. The staff can accurately control the movement speed of the welding arm 3 by adjusting the rotation speed of the motor, ensuring the stability of the welding arm 3 during upward and downward movement.

[0038] As shown in FIG. 1, Figure 2 As shown, further, the welding mechanism 10 also includes three welding guns 101. The three welding guns 101 are arranged on the front side of the lower end of the welding arm 3 in front and back intervals. The gun heads of the welding guns 101 face the same welding point. Heat and welding material can be applied on the welding point simultaneously or continuously, ensuring the uniformity and quality of the weld. By uniformly distributing heat and welding material, deformation and stress concentration during welding can be reduced, thereby improving the strength and durability of the welded joint. Illustratively, the gantry three-wire external welding machine also includes three control boxes 18. The three control boxes 18 are arranged on the outer side of the column 22 of the gantry 2 in upward and downward intervals. The three control boxes 18 are electrically connected to the three welding guns 101 respectively. The control box 18 is used to set and adjust the welding parameters of each welding gun 101, such as welding current, welding voltage, wire feeding speed, welding speed, etc. The stability and consistency during welding can be ensured to meet different welding requirements. The control box adopts a commercially available PLC control box, and the control program is a prior art.

[0039] As shown in FIG. 1, Figure 2As shown, further, the welding mechanism 10 also includes a cross fine adjustment mechanism 102, which is arranged at the lower end of the front side of the welding arm 3, and the welding mechanism 10 also includes a connecting rod 103, which is arranged on the slider at the front end of the cross fine adjustment mechanism 102 along the length direction of the track 1, and the three welding torches 101 are connected to the outer side of the connecting rod 103 at intervals, so that the three welding torches 101 can be slightly moved and adjusted in the horizontal and vertical directions, and the position of the welding torch 101 can be finely controlled to accurately aim at the welding point, thereby ensuring the precision and consistency of welding.

[0040] As shown in Figure 1 and Figure 3 As shown, further, the gantry three-wire external welding machine also includes a flux assembly, which includes a solder box 19, a feeding part 11 and a flux hopper 12, the solder box 19 is arranged at the top end of the gantry 2, the feeding part 11 is arranged at the front side of the upper end of the welding arm 3, and the flux hopper 12 is arranged at the front side of the welding arm 3 below the feeding part 11, the solder box 19, the feeding part 11 and the flux hopper 12 are sequentially connected by pipelines, the feeding part 11 transports the flux from the solder box 19 to the flux hopper 12, and the feeding part 11 usually includes a conveying device such as a conveying pipe or other control device, which can accurately control the flow speed and amount of the flux to ensure the stable supply and uniform distribution of the flux during the welding process.

[0041] As shown in Figure 2 As shown, further, the gantry three-wire external welding machine also includes a wire guide assembly, which includes three wire guide wheel plates 13 and three wire guide pipes, the three wire guide wheel plates 13 are arranged at the top end of the gantry 2, three welding wires respectively pass through the three wire guide pipes into the heads of the three welding torches 101 from the three wire guide wheel plates 13, and the front side of the welding arm 3 is provided with a wire guide pipe support 17, the three wire guide pipes pass through and are clamped in the wire guide pipe support 17, the wire guide wheel plates 13 and the wire guide pipes work cooperatively to ensure that the welding wires are stably transported to the welding torches 101 during the entire welding process, thereby ensuring the welding quality and weld uniformity.

[0042] As shown in Figure 1 and Figure 4 As shown, further, the side of the gantry 2 is provided with a drag chain along the length direction of the track 1, and a layer of drag chain grooves 14 and two layers of drag chain grooves 15 are arranged at intervals along the length direction of the track 1 on the outer side of the track 1, the drag chain is arranged in the one layer of drag chain grooves 14 and the two layers of drag chain grooves 15, and the two layers of drag chain grooves 15 are higher than the one layer of drag chain grooves 14, so that the drag chain is sequentially stacked in the one layer of drag chain grooves 14 and the two layers of drag chain grooves 15 during the movement of the gantry 2 along the track 1, and the stacking or extension of the drag chain is more orderly, thereby saving the space of the device.

[0043] When the embodiment works:

[0044] The workpiece 16 to be welded is erected between the two rails 1 by the roller frame along the length direction of the rail 1, the driving mechanism 4 is pushed left or right, the second roller 8 rolls along the second slide rail 7 left or right, the welding arm 3 moves left or right following the driving mechanism 4, the welding gun 101 is aligned with the weld on the workpiece 16 in the width direction of the workpiece 16, the first motor 9 is started, the first motor 9 drives the gear to rotate, the gear rotation drives the welding arm 3 to move downward, the first roller 5 relatively rolls along the first slide rail 6, the welding gun 101 on the welding arm 3 is aligned with the weld on the workpiece 16 in the height direction, the cross fine adjustment mechanism 102 is started, the welding gun 101 is finely adjusted so that the gun head of the welding gun 101 reaches the welding point of the weld, three welding guns 101 are started by the control box 18, and the second motor 25 is started at the same time, the second motor 25 drives the third roller 24 to rotate along the rail 1, the gantry 2 walks along the length direction of the workpiece 16, and the three welding guns 101 perform the weld operation.

[0045] In this embodiment, the rack at the rear end of the welding arm 3 is arranged on the front side of the driving mechanism 4, the rack and the gear are engaged, the welding arm 3 is moved up and down according to the height of the weld of the workpiece 16, the time for manually replacing the roller frame is reduced, and the work efficiency is improved, meanwhile, the first roller 5 and the first slide rail 6 are arranged, the first slide rail 6 is clamped into the first roller 5, the welding arm 3 is prevented from shaking when moving up and down, the welding arm 3 is prevented from being separated from the driving mechanism 4, and the stability of the welding arm 3 when moving is improved.

[0046] The technical features of the above-described embodiments can be combined arbitrarily, for the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist, it should be considered that the combinations are within the scope of the description.

[0047] The above-described embodiments only express several implementation manners of the utility model, the description is relatively specific and detailed, but it cannot be understood as the limitation on the scope of the utility model patent. It should be pointed out that, for ordinary skilled persons in the art, on the premise of not departing from the concept of the utility model, a plurality of modifications and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A gantry three wire external welder characterized by, The utility model relates to a gantry three -wire outer welding machine, including: Track (1) have two, two symmetry of track (1) are located on the ground; Gantry (2) bottom end slidably arranged on two track (1); Welding arm (3) front end is equipped with welding mechanism (10), the left and right sides of welding arm (3) are equipped with first slide rail (6), the rear end of welding arm (3) is equipped with rack, and the rack is arranged along the length direction of welding arm (3); Driving mechanism (4) is arranged at the top front side of gantry (2), and the front side of driving mechanism (4) is rotatably provided with first roller (5), and first roller (5) has two parallel columns, each column has at least two, and first slide rail (6) is clamped between two columns of first roller (5) on both sides, and the front end of driving mechanism (4) is rotatably provided with gear, and the gear is engaged with rack.

2. The gantry three wire external welder of claim 1, wherein: The gantry (2) includes four columns (22) and a top plate (21), two columns (22) are respectively connected to the left and right sides of the front end of the bottom of the top plate (21), and the other two columns (22) are respectively connected to the left and right sides of the rear end of the bottom of the top plate (21), the front end of the top plate (21) is provided with a cross beam (23), the upper and lower ends of the cross beam (23) are provided with second slide rail (7), the rear side of the driving mechanism (4) is rotatably provided with a plurality of second rollers (8), at least two second rollers (8) are arranged on the left and right sides of the upper end of the driving mechanism (4), and at least two second rollers (8) are arranged on the left and right sides of the lower end of the driving mechanism (4), and the second roller (8) is provided with a sliding groove, and the second slide rail (7) is clamped into the sliding groove on the upper and lower ends.

3. The gantry three wire external welder of claim 1 wherein: The upper end of the driving mechanism (4) is further provided with a first motor (9), and the output end of the first motor (9) is connected with the gear, and the first motor (9) drives the gear to rotate.

4. The gantry three wire external welder of claim 1 wherein: The welding mechanism (10) further includes three welding guns (101), and the three welding guns (101) are arranged on the front side of the lower end of the welding arm (3) with an interval between the front and the rear, and the gun head of the welding gun (101) faces the same welding point.

5. The gantry three wire external welder of claim 4 wherein: The gantry three -wire outer welding machine further includes three control boxes (18), and the three control boxes (18) are arranged on the outer side of the column (22) of the gantry (2) with an interval between the upper and the lower, and the three control boxes (18) are electrically connected with the three welding guns (101) respectively.

6. The gantry three wire external welder of claim 4 wherein: The welding mechanism (10) further includes a cross fine adjustment mechanism (102), and the cross fine adjustment mechanism (102) is arranged on the front side of the lower end of the welding arm (3), the welding mechanism (10) further includes a connecting rod (103), the connecting rod (103) is arranged on the sliding block of the foremost end of the cross fine adjustment mechanism (102) along the length direction of the track (1), and the three welding guns (101) are connected to the outer side of the connecting rod (103) with an interval between the front and the rear.

7. The gantry three wire external welder of claim 1 wherein: The gantry three-wire external welding machine further comprises a flux assembly, the flux assembly comprises a solder box (19), a feeding part (11) and a flux hopper (12), the solder box (19) is arranged at the top end of the gantry (2), the feeding part (11) is arranged on the front side of the upper end of the welding arm (3), the flux hopper (12) is arranged on the front side of the welding arm (3) and below the feeding part (11), the solder box (19), the feeding part (11) and the flux hopper (12) are sequentially connected by pipelines.

8. The gantry three wire external welder of claim 4 wherein: The gantry three-wire external welding machine further comprises a wire guide assembly, the wire guide assembly comprises three wire guide wheel plates (13) and three wire guide pipes, the three wire guide wheel plates (13) are arranged at the top end of the gantry (2), three welding wires respectively pass through the three wire guide pipes into the gun heads of the three welding guns (101) from the three wire guide wheel plates (13), and the front side of the welding arm (3) is provided with a wire guide pipe support (17), the three wire guide pipes pass through and are clamped in the wire guide pipe support (17).

9. The gantry three wire external welder of claim 1 wherein: The gantry (2) is rotatably provided with two third rollers (24) at the bottom ends of the two sides, the track (1) is clamped into the third rollers (24), the third rollers (24) roll on the track (1), and the side surface of the gantry (2) is further provided with a second motor (25), and the output end of the second motor (25) is connected with the third rollers (24).

10. The gantry three wire external welder of claim 1 wherein: The side surface of the gantry (2) is provided with a drag chain along the length direction of the track (1), the outer side of the track (1) is provided with a layer of drag chain grooves (14) and two layers of drag chain grooves (15) in the length direction of the track (1), the drag chain is arranged in the one layer of drag chain grooves (14) and the two layers of drag chain grooves (15), and the two layers of drag chain grooves (15) are higher than the one layer of drag chain grooves (14).

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