Multi-gun type welding device

Abstract

The utility model relates to the technical field of welding equipment, and particularly discloses a multi-gun type welding device which comprises a moving frame, a welding mechanism arranged on the moving frame in a sliding mode and a driving mechanism used for driving the welding mechanism to move. A guide shaft is arranged on the movable frame; the number of the welding mechanisms is at least two, all the welding mechanisms are arranged at intervals in the axial direction of the guide shaft, and each welding mechanism comprises a sliding seat in sliding connection with the guide shaft, a lifting driving piece installed on the sliding seat and a welding gun in transmission connection with the output end of the lifting driving piece. The driving mechanism comprises at least one sliding driving piece installed on the moving frame, and each sliding driving piece drives one or more sliding seats to slide on the guiding shafts through a transmission piece. According to the multi-gun type welding device, by arranging the at least two welding mechanisms, the welding efficiency can be improved, and one sliding driving piece can drive one or more sliding bases to move according to needs, so that single-action or linkage welding operation of the welding mechanisms is achieved.

Description

Technical Field

[0001] The utility model relates to the field of welding equipment, in particular to a multi-gun type welding device. Background Art

[0002] Welding, also known as fusion or melting, is a manufacturing process and technology that joins metals or other thermoplastic materials such as plastics by heating, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasound.

[0003] Usually metal plates or metal strips are fixed to other parts by welding. Currently, metal plates or strips on the market are welded manually or by robots. Manual welding has the problems of high labor intensity and low work efficiency for workers, and is generally used for trial production or production of single or small batch products. Robots are generally used for welding production of large quantities of products. The use of robots can reduce the labor intensity of workers and improve production efficiency. However, such robots can usually only perform single-head welding operations, and it is difficult to achieve higher welding efficiency.

[0004] The technical problem to be solved by this application is: how to improve the welding efficiency of metal strips or plates and reduce the labor intensity of workers. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model aims to provide a multi-gun welding device with simple structure and high welding efficiency.

[0006] The technical solution adopted by the utility model is: a multi-gun welding device, comprising a moving frame, a welding mechanism slidably arranged on the moving frame and a driving mechanism for driving the welding mechanism to move;

[0007] A guide shaft is arranged on the movable frame;

[0008] The number of welding mechanisms is at least two, and each welding mechanism is arranged at intervals along the axial direction of the guide shaft. A single welding mechanism includes a sliding seat slidably connected to the guide shaft, a lifting drive installed on the sliding seat, and a welding gun drivingly connected to the output end of the lifting drive;

[0009] The driving mechanism comprises at least one sliding driving member installed on the moving frame, and each sliding driving member drives one or more sliding seats to slide on the guide shaft through a transmission member.

[0010] The multi-gun welding device of the present application can realize simultaneous continuous welding of multiple points by setting up at least two welding mechanisms, and using a sliding drive member to drive the sliding seat to move, and using a lifting drive member to drive the welding gun to lift and lower. It can greatly improve the welding efficiency of metal plate and strip workpieces, and can choose to use a sliding drive member to drive one or more sliding seats to move according to needs, so as to realize single-motion or linkage welding operations of each welding mechanism, and the operation is flexible and convenient.

[0011] In some embodiments, the welding mechanism also includes a welding gun rack for mounting a welding gun, the welding gun rack including a horizontal axis, a vertical axis and a mounting seat, the horizontal axis is connected to the lifting drive member, a horizontal fine-adjustment member is movably connected to the horizontal axis, a vertical fine-adjustment member is movably connected to the vertical axis, the horizontal fine-adjustment member is connected to the vertical fine-adjustment member, and the mounting seat is installed on the vertical axis.

[0012] By adopting the above technical solution, the welding gun is installed on the mounting seat, and the horizontal position of the welding gun is changed by changing the position of the horizontal fine-tuning part on the horizontal axis (the horizontal direction is perpendicular to the axial direction of the guide shaft). Similarly, the vertical position of the welding gun is changed by changing the position of the vertical fine-tuning part on the vertical axis, so that the initial position of the welding gun can be adjusted according to the welding trajectory of the workpiece.

[0013] In some embodiments, the welding gun holder further includes an angle adjustment shaft rotatably connected to the vertical shaft, the mounting seat is rotatably connected to the angle adjustment shaft, and the rotation trajectory of the mounting seat is perpendicular to the rotation trajectory of the angle adjustment shaft.

[0014] By adopting the above technical solution, the angles of the welding gun in two dimensions can be adjusted according to the welding trajectory of the workpiece, so that the angle between the welding nozzle and the workpiece is within the range required by the welding process.

[0015] In some embodiments, the lifting drive member is a cylinder, a cylinder body of the cylinder is mounted on a sliding seat, a fixed seat is mounted on a telescopic rod of the cylinder, and a welding gun holder is mounted on the fixed seat.

[0016] By adopting the above technical solution, the telescopic rod is driven by the cylinder to drive the welding gun rack to move up and down, and the fixing seat can facilitate the welding gun rack to be installed and fixed on the telescopic rod.

[0017] In some embodiments, there are two guide shafts, which are arranged in parallel, and a linear bearing that slides with the guide shafts is installed on the sliding seat.

[0018] By adopting the above technical solution, two parallel guide shafts can play a role in stopping rotation and prevent the sliding seat from rotating around the guide shaft, so as to ensure the accuracy of the movement trajectory of the sliding seat during welding, thereby ensuring the accuracy of welding. By setting a linear bearing, the friction of the sliding seat during sliding can be reduced, ensuring the accuracy of the sliding seat movement and extending the service life of the welding device.

[0019] In some embodiments, the number of welding mechanisms is two.

[0020] In some embodiments, the number of the sliding drive member and the driving member is two, each of the sliding drive member and the driving member corresponds to a welding mechanism, the sliding drive member is a servo motor, and the driving member is a ball screw.

[0021] By adopting the above technical solution, the horizontal sliding of the two welding mechanisms can be independently controlled, and the operation is more flexible.

[0022] In some embodiments, each sliding seat is provided with a ball nut matched with the corresponding ball screw thread, and each sliding seat is also provided with a clearance groove for avoiding other ball screws.

[0023] By adopting the above technical solution, the ball nut cooperates with the ball screw to improve the transmission accuracy, and the air avoidance groove can prevent the sliding seat from interfering with the ball screw driving another sliding seat.

[0024] In some embodiments, the movable frame further includes a connecting seat, the guide shaft is fixedly connected to the connecting seat, and the sliding drive member is installed on the connecting seat.

[0025] By adopting the above technical solution, the connecting seat can fix the welding device outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of a multi-gun welding device according to a preferred embodiment of the utility model;

[0027] Figure 2 for Figure 1 The schematic diagram of the structure of the welding mechanism in the multi-gun welding device is shown.

[0028] In the figure: 100, multi-gun welding device; 10, moving frame; 11, guide shaft; 12, connecting seat; 20, welding mechanism; 21, sliding seat; 211, linear bearing; 212, ball nut; 213, air avoidance groove; 22, lifting drive member; 23, welding gun frame; 231, horizontal axis; 232, horizontal fine-tuning member; 233, vertical axis; 234, vertical fine-tuning member; 235, mounting seat; 236, angle adjustment shaft; 24, fixed seat; 30, driving mechanism; 31, sliding driving member; 32, transmission member. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. When the number of an element is referred to as "plurality", it may be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] See also Figure 1 and Figure 2 , which is a multi-gun welding device 100 of a preferred embodiment of the utility model, includes a mobile frame 10, a welding mechanism 20 slidably arranged on the mobile frame 10, and a driving mechanism 30 for driving the welding mechanism 20 to move, wherein the number of the welding mechanisms 20 is at least two, and the driving mechanism 30 includes at least one sliding driving member 31, each sliding driving member 31 drives one or more welding mechanisms 20 to slide on the mobile frame 10. The multi-gun welding device 100 of the present application can realize multi-point simultaneous continuous welding by setting multiple welding mechanisms 20, greatly improving the welding efficiency of metal plate and strip workpieces, and can choose to drive one or more welding mechanisms 20 to slide by a sliding driving member 31 as needed, so as to realize single-motion or linkage welding operation of each welding mechanism 20, and the operation is flexible and convenient.

[0033] like Figure 1As shown, the mobile frame 10 includes a guide shaft 11 and a connecting seat 12. The guide shaft 11 is mounted between the two connecting seats 12, and the guide shaft 11 is fixedly connected to the connecting seat 12. Bolt holes for connecting to the outside are provided at the bottom of the connecting seat 12, so that the mobile frame 10 can be fixed to a desired workbench, rack, ground or other place as needed.

[0034] Please refer to Figure 1 The welding mechanisms 20 are arranged at intervals along the axial direction of the guide shaft 11. Figure 2 As shown, a single welding mechanism 20 includes a sliding seat 21 slidably connected to the guide shaft 11 , a lifting drive member 22 installed on the sliding seat 21 , and a welding gun (not shown) drivingly connected to the output end of the lifting drive member 22 .

[0035] Preferably, there are two guide shafts 11, which are arranged in parallel, and a linear bearing 211 is installed on the sliding seat 21 to slide with the guide shaft 11. The two parallel guide shafts 11 can play a role of stopping rotation, preventing the sliding seat 21 from rotating around the guide shaft 11, so as to ensure that the movement trajectory of the sliding seat 21 is accurate during the welding process, thereby ensuring the accuracy of welding, and by providing the linear bearing 211, the friction of the sliding seat 21 during the sliding process can be reduced, ensuring the accuracy of the movement of the sliding seat 21 and extending the service life of the welding device.

[0036] Furthermore, the welding mechanism 20 also includes a welding gun rack 23 for mounting a welding gun, the welding gun rack 23 includes a horizontal axis 231, a vertical axis 233 and a mounting seat 235, the horizontal axis 231 is connected to the lifting drive member 22, a horizontal fine-tuning member 232 is movably connected to the horizontal axis 231, a vertical fine-tuning member 234 is movably connected to the vertical axis 233, the horizontal fine-tuning member 232 is connected to the vertical fine-tuning member 234, and the mounting seat 235 is mounted on the vertical axis 233. The welding gun is mounted on the mounting seat 235, and the horizontal position of the welding gun is changed by changing the position of the horizontal fine-tuning member 232 on the horizontal axis 231 (the horizontal direction is perpendicular to the axial direction of the guide shaft 11). Similarly, the position of the welding gun in the vertical direction is changed by changing the position of the vertical fine-tuning member 234 on the vertical axis 233, so as to facilitate adjusting the initial position of the welding gun according to the welding trajectory of the workpiece. Preferably, the horizontal fine-tuning member 232 is threadedly connected to the horizontal shaft 231 , and the vertical fine-tuning member 234 is threadedly connected to the vertical shaft 233 .

[0037] Furthermore, the welding gun holder 23 also includes an angle adjustment shaft 236 rotatably connected to the vertical shaft 233, the mounting seat 235 is rotatably connected to the angle adjustment shaft 236, and the rotation trajectory of the mounting seat 235 is perpendicular to the rotation trajectory of the angle adjustment shaft 236. With this arrangement, the angle of the welding gun in two dimensions can be adjusted according to the welding trajectory of the workpiece, so that the angle between the welding nozzle and the workpiece is within the range required by the welding process. Preferably, the angle adjustment shaft 236 is connected to the vertical shaft 233 in a damped rotational connection, and the mounting seat 235 is connected to the angle adjustment shaft 236 in a damped rotational connection.

[0038] In this embodiment, the lifting drive member 22 is a cylinder, the cylinder body of the cylinder is installed on the sliding seat 21, the telescopic rod of the cylinder is installed with a fixed seat 24, and the welding gun holder 23 is installed on the fixed seat 24. The telescopic rod is driven by the cylinder to drive the welding gun holder 23 to rise and fall, and the fixed seat 24 can facilitate the installation and fixation of the welding gun holder 23 on the telescopic rod. In other embodiments, a power component that can achieve the same function, such as an oil cylinder or a motor, can also be used as the lifting drive member 22.

[0039] like Figure 1 As shown, the driving mechanism 30 further includes a transmission member 32 , and each sliding driving member 31 drives one or more sliding seats 21 to slide on the guide shaft 11 through the transmission member 32 , and the sliding driving member 31 is installed on the connecting seat 12 .

[0040] In this embodiment, there are two welding mechanisms 20. Correspondingly, there are two sliding drive members 31 and two drive members, each of which corresponds to one welding mechanism 20. The sliding drive member 31 is a servo motor, and the drive member is a ball screw. By using two sliding drive members 31 to drive two welding mechanisms 20 respectively, the horizontal sliding of the two welding mechanisms 20 can be controlled separately, and the operation is more flexible.

[0041] Furthermore, each sliding seat 21 is provided with a ball nut 212 that matches the corresponding ball screw thread, and each sliding seat 21 is also provided with a clearance groove 213 for avoiding other ball screws. The ball nut 212 matches the ball screw to improve the transmission accuracy, and the clearance groove 213 can prevent the sliding seat 21 from interfering with the ball screw driving another sliding seat 21.

[0042] In other embodiments, one motor may be used to drive the two welding mechanisms 20 to slide. If the two welding mechanisms 20 need to move in the same direction, a one-way ball screw may be used as the transmission member 32. If the two welding mechanisms 20 need to move in opposite directions at the same time, a double-headed ball screw may be used as the transmission member 32.

[0043] It should be noted that the number of welding mechanisms 20 is not limited to Figure 1Two are shown, and the number of welding mechanisms 20 can be increased or decreased according to actual needs.

[0044] The multi-gun welding device 100 further includes a controller (not shown), which is connected to the lifting drive 22, the sliding drive 31, and the welding gun for controlling the lifting drive 22, the sliding drive 31, and the welding gun to work in coordination.

[0045] During welding, first fix the workpiece, then install the welding gun on the mounting seat 235, and adjust the welding gun holder 23 according to the shape of the workpiece so that the posture of the welding gun matches the welding trajectory. Then input the welding path into the controller and generate a welding control program. Then start the device, and the controller controls the lifting drive 22, the sliding drive 31 and the welding gun to weld the workpiece according to the generated welding control program.

[0046] The multi-gun welding device 100 of the present application can realize simultaneous continuous welding of multiple points by setting up at least two welding mechanisms 20, and using a sliding drive member 31 to drive the sliding seat 21 to move, and using a lifting drive member 22 to drive the welding gun to lift and lower. It can greatly improve the welding efficiency of metal plate and strip workpieces, and can choose to drive one or more sliding seats 21 to move by a sliding drive member 31 as needed, so as to realize single-motion or linkage welding operations of each welding mechanism 20, and the operation is flexible and convenient.

[0047] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A multi-gun welding device, comprising a mobile frame (10), characterized in that: It also includes a welding mechanism (20) slidably arranged on the movable frame (10) and a driving mechanism (30) for driving the welding mechanism (20) to move; The movable frame (10) is provided with a guide shaft (11); The number of the welding mechanisms (20) is at least two, and the welding mechanisms (20) are arranged at intervals along the axial direction of the guide shaft (11). Each welding mechanism (20) comprises a sliding seat (21) slidably connected to the guide shaft (11), a lifting drive member (22) installed on the sliding seat (21), and a welding gun drivingly connected to the output end of the lifting drive member (22); The driving mechanism (30) comprises at least one sliding driving member (31) mounted on the moving frame (10), and each of the sliding driving members (31) drives one or more sliding seats (21) to slide on the guide shaft (11) via a transmission member (32).

2. The multi-gun welding device according to claim 1, characterized in that: The welding mechanism (20) further comprises a welding gun rack (23) for mounting a welding gun, the welding gun rack (23) comprising a horizontal axis (231), a vertical axis (233) and a mounting seat (235), the horizontal axis (231) being connected to the lifting drive member (22), a horizontal fine-tuning member (232) being movably connected to the horizontal axis (231), a vertical fine-tuning member (234) being movably connected to the vertical axis (233), the horizontal fine-tuning member (232) being connected to the vertical fine-tuning member (234), and the mounting seat (235) being mounted on the vertical axis (233).

3. The multi-gun welding device according to claim 2, characterized in that: The welding gun stand (23) also includes an angle adjustment shaft (236) rotatably connected to the vertical shaft (233), the mounting seat (235) is rotatably connected to the angle adjustment shaft (236), and the rotation trajectory of the mounting seat (235) is perpendicular to the rotation trajectory of the angle adjustment shaft (236).

4. The multi-gun welding device according to claim 2, characterized in that: The lifting drive member (22) is a cylinder, the cylinder body of which is mounted on a sliding seat (21), a fixed seat (24) is mounted on the telescopic rod of the cylinder, and the welding gun holder (23) is mounted on the fixed seat (24).

5. The multi-gun welding device according to claim 1, characterized in that: There are two guide shafts (11), which are arranged in parallel. A linear bearing (211) which is slidably matched with the guide shaft (11) is installed on the sliding seat (21).

6. The multi-gun welding device according to claim 1, characterized in that: The number of the welding mechanisms (20) is two.

7. The multi-gun welding device according to claim 6, characterized in that: The number of the sliding drive member (31) and the driving member is two, each of the sliding drive member (31) and the driving member corresponds to a welding mechanism (20), the sliding drive member (31) is a servo motor, and the driving member is a ball screw.

8. The multi-gun welding device according to claim 7, characterized in that: Each of the sliding seats (21) is provided with a ball nut (212) that matches the thread of the corresponding ball screw, and each of the sliding seats (21) is also provided with a clearance groove (213) for avoiding other ball screws.

9. The multi-gun welding device according to claim 1, characterized in that: The movable frame (10) further comprises a connecting seat (12), the guide shaft (11) is fixedly connected to the connecting seat (12), and the sliding drive member (31) is mounted on the connecting seat (12).

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