A robot welding system for medium and large diameter stainless steel and titanium alloy pipes

Abstract

The utility model discloses a robot welding system for medium and large diameter stainless steel and titanium alloy pipes, comprising a ground rail, a plurality of workstations arranged on the side of the ground rail, and a plurality of external welding devices arranged on the ground rail and capable of moving along the ground rail, wherein the external welding devices match the workstations, and each of the workstations is provided with an internal welding device. The utility model adopts a plurality of external welding devices arranged along the ground rail to realize synchronous external welding of a plurality of workpieces, and simultaneously cooperates with a plurality of internal welding devices to synchronously weld the inside of the workpieces, thereby greatly improving the welding efficiency, improving the welding quality, and reducing the labor cost.

Description

Technical Field

[0001] The utility model relates to a robot welding system for medium and large-caliber stainless steel and titanium alloy pipelines. Background Art

[0002] For medium and large diameter stainless steel and titanium alloy pipes, it is necessary to weld the axial gap on the side of the pipe during production. At present, semi-automatic welding is usually performed by manually operated side beam welding machines, gantry welding machines and other equipment. Such welding equipment occupies a large area and requires professional welding personnel to operate. The entire welding process requires human participation and adjustment, which is labor-intensive, has a high error rate, and the welding quality cannot be guaranteed. In addition, when multiple devices are running at the same time, multiple operators are required to participate in the work, resulting in high labor costs, long production preparation time, short equipment operation time, and low production efficiency. At the same time, different equipment is required for internal and external welding, and workpieces need to be frequently hoisted. Utility Model Content

[0003] In view of the above problems, the utility model provides a robot welding system for medium and large diameter stainless steel and titanium alloy pipes, which effectively solves the problems pointed out in the background technology.

[0004] The technical solution adopted by the utility model is:

[0005] A robot welding system for medium and large diameter stainless steel and titanium alloy pipes comprises a ground rail, a plurality of workstations arranged on the side of the ground rail, and a plurality of external welding devices arranged on the ground rail and capable of moving along the ground rail, wherein the external welding devices match the workstations, and each of the workstations is provided with an internal welding device.

[0006] Preferably, the external welding device comprises an external welding mobile platform and a six-axis robotic arm welding machine fixed on the external welding mobile platform.

[0007] The six-axis robotic arm welding machine is capable of welding along the external gap of the workpiece.

[0008] Preferably, a rack is provided on the ground rail, and a servo system is provided on the externally welded mobile platform, and the servo system is matched with the rack through a gear.

[0009] The servo system provides power for the movement of the external welding mobile platform, and the servo system enables the external welding mobile platform to move along the rack on the ground rail through the rotation of the gear, thereby realizing the movement of the external welding mobile platform. Such a structural design can achieve precise control of speed and position.

[0010] Preferably, the workstation includes a placement table symmetrically arranged at both ends of the workstation, and a moving mechanism and a guide rail matching the moving mechanism are provided at the bottom of the placement table.

[0011] Preferably, the moving mechanism is provided with a locking mechanism for locking the moving mechanism and the guide rail.

[0012] The position of the moving mechanism can be adjusted according to the different lengths of the workpieces. When the workpiece is shorter, the distance between the two moving mechanisms is reduced, and when the workpiece is longer, the distance between the two moving mechanisms is increased.

[0013] Preferably, a pair of support platforms are laterally arranged on the placement table, and rotatable support rollers are arranged on the inner sides of the support platforms.

[0014] The workpiece is supported by the rotating support roller, so that the workpiece can be rotated to adjust the position of the weld.

[0015] Preferably, the placement platform is provided with a screw rod for controlling the relative or toward movement of the support platforms, and a hand wheel is fixed to one end of the screw rod.

[0016] The adjustment of the support table can adapt to workpieces of different thicknesses. For thicker workpieces, the distance between the two support tables is increased by adjustment. For thinner workpieces, the distance between the two support tables is reduced by adjustment.

[0017] Preferably, the external threads on both sides of the midpoint of the screw rotate in opposite directions, and the two support platforms are respectively provided with internal threads matching the two ends of the screw.

[0018] The relative and opposite movement of the two support platforms is achieved by the screw rod, the structure is simple, the operation is convenient, and it is not easy to loosen after reaching the target position.

[0019] Preferably, the internal welding device comprises an internal welding track and a pipe welding machine running along the internal welding track.

[0020] The inner welding track can be set at one end of the workstation. When welding is required, the pipe welding machine can move along the track to the inside of the workpiece for welding.

[0021] The utility model adopts multiple external welding devices arranged along the ground rail to realize synchronous external welding of multiple workpieces, and cooperates with multiple internal welding devices to synchronously weld the inside of the workpieces, thereby greatly improving the welding efficiency, improving the welding quality and reducing the labor cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of part A;

[0024] Figure 3It is a side structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like 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 according to specific circumstances.

[0030] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0032] like Figure 1-3 As shown, a robot welding system for medium and large diameter stainless steel and titanium alloy pipes includes a ground rail 1, a plurality of workstations 2 arranged on the side of the ground rail 1, and a plurality of external welding devices 3 arranged on the ground rail 1 and capable of moving along the ground rail 1, wherein the external welding devices 3 match the workstations 2, and each of the workstations 2 is provided with an internal welding device 4.

[0033] The external welding device 3 includes an external welding mobile platform 31 and a six-axis robot arm welding machine 32 fixed on the external welding mobile platform 31 .

[0034] The ground rail 1 is provided with a rack, and the external welding mobile platform 31 is provided with a servo system, and the servo system is matched with the rack through a gear.

[0035] The workstation 2 comprises a placing table 21 symmetrically arranged at two ends of the workstation 2 , and a moving mechanism 22 and a guide rail 23 matching the moving mechanism 22 are arranged at the bottom of the placing table 21 .

[0036] The moving mechanism 22 is provided with a locking mechanism for locking the moving mechanism 22 and the guide rail 23. The locking mechanism can adopt a conventional locking member, which is not shown in the figure.

[0037] A pair of support platforms 24 are disposed transversely on the placement platform 21 , and rotatable support rollers 25 are disposed inside the support platforms 24 .

[0038] The placing platform 21 is provided with a screw rod 26 for controlling the relative or opposite movement of the supporting platform 24 , and a hand wheel 27 is fixed at one end of the screw rod 26 .

[0039] The internal welding device 4 includes an internal welding track (not shown) and a pipe welding machine that moves along the internal welding track. The internal welding track can be set at one end of the workstation 2. When welding is required, the pipe welding machine can enter the workpiece along the internal welding track for welding.

[0040] The working principle of the utility model is as follows:

[0041] 1. The operator hoists the workpiece into the workstation 2, starts the external welding device 3 and the internal welding device 4 and positions them to the welding arc initiation position;

[0042] 2. After checking the welding process parameters, the operator starts the external welding device 3 and the internal welding device 4 for welding. The external welding device 3 and the internal welding device 4 automatically weld according to the set welding current, welding speed and shielding gas flow rate. During the welding process, the external welding device 3 and the internal welding device 4 will adjust the welding gun position in real time according to the welding path generated by the laser scanning;

[0043] 3. When the external welding device 3 and the internal welding device 4 run to the arc extinguishing position, the welding is completed, and the external welding device 3 and the internal welding device 4 will automatically and quickly return to the original position;

[0044] 4. The operator removes the welded workpiece from station 2, re-inserts the workpiece to be welded, repeats the above process, and then welds the next workpiece.

[0045] During welding, a plurality of external welding devices 3 and internal welding devices 4 can work simultaneously to weld the workpieces on their respective workstations 2, which greatly improves the welding efficiency. At the same time, such a structure occupies a small area.

[0046] When the utility model is used in a specific application, a controller, a sensor and the like can be arranged to realize automatic welding.

[0047] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes, characterized in that: The invention comprises a ground rail (1), a plurality of workstations (2) arranged on the side of the ground rail (1), and a plurality of external welding devices (3) arranged on the ground rail (1) and capable of moving along the ground rail (1), wherein the external welding devices (3) match the workstations (2), and each of the workstations (2) is provided with an internal welding device (4).

2. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 1, characterized in that: The external welding device (3) comprises an external welding mobile platform (31) and a six-axis mechanical arm welding machine (32) fixed on the external welding mobile platform (31).

3. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 2, characterized in that: The ground rail (1) is provided with a rack, and the external welding mobile platform (31) is provided with a servo system, and the servo system is matched with the rack through a gear.

4. The robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 1 is characterized in that: The workstation (2) comprises a placement platform (21) symmetrically arranged at both ends of the workstation (2), and a moving mechanism (22) and a guide rail (23) matching the moving mechanism (22) are provided at the bottom of the placement platform (21).

5. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 4, characterized in that: The moving mechanism (22) is provided with a locking mechanism for locking the moving mechanism (22) and the guide rail (23).

6. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 5, characterized in that: A pair of support platforms (24) are laterally arranged on the placement platform (21), and a rotatable support roller (25) is arranged on the inner side of the support platform (24).

7. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 6, characterized in that: The placement platform (21) is provided with a screw rod (26) for controlling the relative or opposite movement of the support platform (24), and a hand wheel (27) is fixed to one end of the screw rod (26).

8. A robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 7, characterized in that: The external threads of the screw rod (26) on both sides of the midpoint rotate in opposite directions, and the two support platforms (24) are respectively provided with internal threads matching the two ends of the screw rod (26).

9. The robot welding system for medium and large diameter stainless steel and titanium alloy pipes according to claim 1 is characterized in that: The internal welding device (4) comprises an internal welding track and a pipeline welding machine running along the internal welding track.

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