Automatic welding device for box type steel component

Abstract

The automatic welding device comprises a power trolley, the upper portion of the power trolley is connected with a driving mechanism through a lifting device, the driving mechanism drives two connecting rods to be relatively close to or away from each other, guide wheels are arranged at the lower ends of the connecting rods, and the connecting rods are provided with adjusting assemblies used for positioning welding guns; the adjusting assembly comprises a first movable rod and a second movable rod, the first movable rod and the second movable rod are both movably connected with the connecting rod in a sleeved mode, one end of the first movable rod abuts against the side edge of the box-type steel component, one end of the second movable rod is connected with the welding gun, a connecting plate is arranged at the other end of the first movable rod, and the other end of the second movable rod is connected with the connecting plate through a spring. The rod body, close to the welding gun, of the second movable rod is sleeved with a positioning plate abutting against the flange of the box-type steel component. Automatic positioning of the welding gun is achieved, it is ensured that the welding gun is always aligned with a welding seam, manual adjustment is not needed, and the welding gun can be suitable for welding box type steel components of different specifications, is wide in application range and is suitable for application and popularization.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, in particular to an automatic welding device for box-shaped steel components. Background Art

[0002] Steel components refer to steel structure composite components that can bear and transfer loads and are made of steel plates, angle steels, channel steels, I-beams, welded or hot-rolled H-shaped steels that are cold-bent or welded through connectors. Among them, box-shaped steel components have more parts, and the position requirements for each part during welding are relatively high. Box-shaped components account for a large proportion in production. At present, automatic welding equipment is usually used when welding box-shaped steel components, that is, the welding gun moves along the weld for welding. However, due to the characteristics of box-shaped components (large length, individual weight, multiple specifications, etc.), a single automatic welding equipment cannot meet the production needs during the welding process. In addition, the welding gun needs to be positioned before welding, and the box-shaped steel components need to be moved or adjusted, resulting in uneven welding quality and reduced operating efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the existing defects and provide an automatic welding device for box-type steel components, which realizes automatic positioning of the welding gun, ensures that the welding gun is always aligned with the weld, and does not require manual adjustment, saving time and effort. It can be applied to the welding of box-type steel components of different specifications, has a wide range of uses, is suitable for popularization and use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic welding device for box-shaped steel components, comprising a power trolley, the upper part of which is connected to a driving mechanism via a lifting device, the driving mechanism drives two connecting rods to move relatively closer or farther away, the lower end of the connecting rod is provided with a guide wheel, and the connecting rod is provided with an adjustment component for positioning a welding gun; the adjustment component comprises a movable rod 1 and a movable rod 2, the movable rod 2 is located at the upper part of the movable rod 1, the movable rod 1 and the movable rod 2 are both movably connected to the connecting rod, and one end of the movable rod 1 is connected to the side of the box-shaped steel component The movable rod 1 is connected to the welding gun, and the other end of the movable rod 1 is provided with a connecting plate. The other end of the movable rod 2 is connected to the connecting plate through a spring. The rod body of the movable rod 2 is provided with a positioning plate that is in contact with the flange of the box-shaped steel member near the welding gun sleeve. The positioning plate is fixed to the movable rod 2 by a locking screw. When the driving mechanism drives the guide wheel to contact the side of the box-shaped steel member through the connecting rod, the movable rod 1 is in contact with the side of the box-shaped steel member and the movable rod 2 is pulled to move through the connecting plate and the spring, and the positioning plate is in contact with the flange of the box-shaped steel member and locates the welding gun.

[0005] Preferably, the driving mechanism includes a shell, in which a bidirectional screw is rotatably mounted, wherein two reverse threaded sections of the bidirectional screw are connected to a connecting rod via a screw nut seat, and a motor for driving the bidirectional screw to rotate is provided at the end of the shell.

[0006] Preferably, a through hole is provided at the end of the second movable rod, a threaded rod is inserted into the through hole, the rod body of the threaded rod is threadedly connected to two locking nuts, a sleeve is provided at one end of the threaded rod, the welding gun is inserted in the sleeve, and the sleeve is provided with a locking screw for locking and fixing the welding gun.

[0007] Preferably, a fixed block is provided at the end of the movable rod facing the box-shaped steel member, and a plurality of universal balls are provided on the side where the fixed block contacts the box-shaped steel member. The rod body of the movable rod is also sleeved with a return spring, and the two ends of the return spring contact the fixed block and the connecting rod respectively.

[0008] Preferably, the positioning plate is located at the front end of the welding gun's travel direction.

[0009] Preferably, the lower end surface of the positioning plate is provided with a plurality of universal ball bearings, the side surface of the positioning plate in contact with the flange of the box-shaped steel member is provided with a plurality of universal ball bearings, and the lower end surface of the positioning plate is also provided with a touch switch, which is electrically interlocked with the lifting device.

[0010] Preferably, the lifting device is an electric cylinder, and the upper end of the lifting device is connected to the shell through a connecting seat.

[0011] Preferably, the power vehicle has a battery inside, and the battery supplies power to the lifting device and the motor.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the two connecting rods are driven to move relative to each other through the driving mechanism, and when the connecting rod moves, the guide wheel is driven to contact the side of the box-shaped steel component. When the guide wheel moves toward the side of the box-shaped steel component, one end of the movable rod first contacts the side of the box-shaped steel component. When the movable rod moves, the movable rod one pulls the movable rod two to move through the connecting plate and the spring, and the positioning plate on the movable rod two contacts the flange of the box-shaped steel component. The welding gun is positioned by the positioning plate, thereby realizing automatic positioning of the welding gun. No manual adjustment is required, which saves time and effort. It is also suitable for welding box-shaped steel components of different specifications, has a wide range of uses, and is suitable for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 for Figure 3 sectional view of .

[0014] In the figure: 1 power trolley, 2 lifting device, 3 driving mechanism, 3.1 motor, 3.2 screw nut seat, 3.3 housing, 3.4 bidirectional screw, 4 adjustment assembly, 4.1 movable rod 1, 4.2 connecting plate, 4.3 spring, 4.4 movable rod 2, 4.5 locking nut, 4.6 threaded rod, 4.7 sleeve, 4.8 positioning plate, 4.9 fixing block, 4.10 reset spring, 5 connecting rod, 6 guide wheel, 7 welding gun. DETAILED DESCRIPTION

[0015] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", etc. indicating directions or positional relationships, they only correspond to the drawings of the present application for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction.

[0016] See also Figure 1-4 The present invention provides a technical solution: an automatic welding device for a box-shaped steel member, comprising a power trolley 1, the upper part of the power trolley 1 is connected to a driving mechanism 3 through a lifting device 2, the driving mechanism 3 drives two connecting rods 5 to move relatively close to or away from each other, the lower end of the connecting rod 5 is provided with a guide wheel 6, and the connecting rod 5 is provided with an adjustment component 4 for positioning a welding gun 7; the adjustment component 4 comprises a movable rod 1 4.1 and a movable rod 2 4.4, the movable rod 2 4.4 is located at the upper part of the movable rod 1 4.1, the movable rod 1 4.1 and the movable rod 2 4.4 are both movably sleeved with the connecting rod 5, one end of the movable rod 1 4.1 is in conflict with the side of the box-shaped steel member, and one end of the movable rod 2 4.4 is in conflict with the side of the box-shaped steel member Connected to the welding gun 7, the other end of the movable rod 1 4.1 is provided with a connecting plate 4.2, the other end of the movable rod 2 4.4 is connected to the connecting plate 4.2 through a spring 4.3, the rod body of the movable rod 2 4.4 is close to the welding gun 7 and is sleeved with a positioning plate 4.8 that contacts the flange of the box-shaped steel member, and the positioning plate 4.8 is fixed to the movable rod 2 4.4 through a locking screw; when the driving mechanism 3 drives the guide wheel 6 to contact the side of the box-shaped steel member through the connecting rod 5, the movable rod 1 4.1 contacts the side of the box-shaped steel member and pulls the movable rod 2 4.4 to move through the connecting plate 4.2 and the spring 4.3, then the positioning plate 4.8 contacts the flange of the box-shaped steel member and locates the position of the welding gun 7; like Figure 1As shown, it can be understood that the box-shaped steel member is first spot-welded and positioned at full welding. When the box-shaped steel member is fully welded, it is hoisted onto the box-shaped steel member. The places where the box-shaped steel member needs to be welded are the welds on both sides. The driving mechanism 3 drives the two guide wheels 6 to approach the side of the box-shaped steel member through the two connecting rods 5. In the process of approaching the side of the box-shaped steel member, the end of the movable rod 1 4.1 contacts the side of the box-shaped steel member, and the movable rod 1 4.1 moves away from the box-shaped steel member. Then, the movable rod 1 4.1 pulls the movable rod 2 4.4 to move through the connecting plate 4.2 and the spring 4.3. Then, the positioning plate 4.8 on the movable rod 2 4.4 contacts the flange of the box-shaped steel member. The welding gun 7 is positioned by the positioning plate 4.8 to ensure that the welding gun 7 is always aligned with the weld during the movement. The welding gun 7 can be quickly positioned by moving the driving mechanism 3 without the need for traditional manual adjustment, which saves time and trouble. It should be noted that the role of setting the lifting device 2 is that the lifting device 2 can drive the driving mechanism 3 to move up and down, so as to adjust the height of the positioning plate 4.8. When the lower end surface of the positioning plate 4.8 contacts the box-shaped steel member, the lifting device 2 does not move, that is, the positioning plate 4.8 contacts the flange and surface of the box-shaped steel member, and the positioning of two degrees of freedom is realized, that is, the position of the welding gun 7 in the left and right directions and the up and down directions is determined, so as to ensure that the welding gun 7 is aligned with the weld; in addition, the movable rod 2 4.4 is connected to the connecting plate 4.2 by the spring 4.3, so as to reserve a buffer distance and avoid hard pulling of the movable rod 2 4.4; Specifically, the driving mechanism 3 includes a housing 3.3, in which a bidirectional screw rod 3.4 is rotatably mounted, and two reverse threaded sections of the bidirectional screw rod 3.4 are connected to the connecting rod 5 via a screw rod nut seat 3.2. A motor 3.1 for driving the bidirectional screw rod 3.4 to rotate is disposed at the end of the housing 3.3. The motor 3.1 drives the bidirectional screw rod 3.4 to rotate, and when the bidirectional screw rod 3.4 rotates, the two connecting rods 5 are driven to move relatively closer or farther away via two screw rod nut seats 3.2. Further, a through hole is provided at the end of the movable rod 4.4, a threaded rod 4.6 is inserted in the through hole, the rod body of the threaded rod 4.6 is threadedly connected with two nuts 4.5, a sleeve 4.7 is provided at one end of the threaded rod 4.6, a welding gun 7 is inserted in the sleeve 4.7, the sleeve 4.7 is provided with a locking screw for locking and fixing the welding gun 7, the screw stem 4.6 can rotate in the through hole in the movable rod 4.4, that is, the angle of the welding gun 7 can be adjusted, the welding gun 7 can move in the sleeve 4.7, and the distance between the welding gun 7 and the weld can be adjusted, and the welding gun 7 can be adjusted before welding according to the specifications of the box-shaped steel member; Furthermore, a fixed block 4.9 is provided at the end of the movable rod 1 4.1 facing the box-shaped steel member, and a plurality of universal balls are provided on the side of the fixed block 4.9 that contacts the box-shaped steel member. Since the power trolley 1 moves on the box-shaped steel member, the fixed block 4.9 is also constantly moving. By providing universal balls on the fixed block 4.9, the friction between the fixed block 4.9 and the side of the box-shaped steel member is reduced. The rod body of the movable rod 1 4.1 is also sleeved with a return spring 4.10. The two ends of the return spring 4.10 contact the fixed block 4.9 and the connecting rod 5 respectively, and the fixed block 4.9 is reset by the return spring 4.10. Furthermore, the positioning plate 4.8 is located at the front end of the traveling direction of the welding gun 7, and the welding gun 7 is positioned and guided by the positioning of the positioning plate 4.8; Furthermore, the lower end surface of the positioning plate 4.8 is provided with a plurality of universal balls, and the side surface of the positioning plate 4.8 that contacts the flange of the box-shaped steel member is provided with a plurality of universal balls to reduce the friction with the box-shaped steel member. The lower end surface of the positioning plate 4.8 is also provided with a touch switch, and the touch switch is electrically interlocked with the lifting device 2. The lifting device 2 is controlled to start and stop by the touch switch, that is, when the lower end surface of the positioning plate 4.8 contacts the box-shaped steel member, the touch switch also contacts. At this time, the feedback signal controls the lifting device 2 to stop the action, thereby avoiding the lifting device 2 from doing useless work; In addition, the lifting device 2 is an electric cylinder, and the upper end of the lifting device 2 is connected to the shell 3.3 through a connecting seat; there is a battery in the power trolley 1, and the battery supplies power to the lifting device 2 and the motor 3.1.

[0017] The parts of the present invention that are not described in detail are prior art. It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and it is intended that all changes that fall within the meaning and scope of equivalent elements are included in the content of the present invention.

Claims

1. An automatic welding device for box-shaped steel components, characterized in that: The invention comprises a power trolley (1), the upper part of which is connected to a driving mechanism (3) via a lifting device (2), the driving mechanism (3) drives two connecting rods (5) to move relatively closer or farther away, the lower end of the connecting rod (5) is provided with a guide wheel (6), the connecting rod (5) is provided with an adjustment assembly (4) for positioning a welding gun (7); the adjustment assembly (4) comprises a movable rod 1 (4.1) and a movable rod 2 (4.4), the movable rod 2 (4.4) is located at the upper part of the movable rod 1 (4.1), the movable rod 1 (4.1) and the movable rod 2 (4.4) are both movably sleeved with the connecting rod (5), one end of the movable rod 1 (4.1) contacts the side of a box-shaped steel member, one end of the movable rod 2 (4.4) is connected to the welding gun (7), and the movable rod The other end of the movable rod (4.1) is provided with a connecting plate (4.2), the other end of the movable rod (4.4) is connected to the connecting plate (4.2) via a spring (4.3), the rod body of the movable rod (4.4) is sleeved with a positioning plate (4.8) that contacts the flange of the box-shaped steel member near the welding gun (7), and the positioning plate (4.8) is fixed to the movable rod (4.4) via a locking screw; when the driving mechanism (3) drives the guide wheel (6) to contact the side of the box-shaped steel member via the connecting rod (5), the movable rod (4.1) contacts the side of the box-shaped steel member and pulls the movable rod (4.4) to move via the connecting plate (4.2) and the spring (4.3), and the positioning plate (4.8) contacts the flange of the box-shaped steel member and positions the welding gun (7).

2. The automatic welding device for box-shaped steel members according to claim 1 is characterized in that: The driving mechanism (3) comprises a housing (3.3), a bidirectional screw rod (3.4) rotatably fitted inside the housing (3.3), two opposite threaded sections of the bidirectional screw rod (3.4) being connected to a connecting rod (5) via a screw rod nut seat (3.2), and a motor (3.1) for driving the bidirectional screw rod (3.4) to rotate is provided at the end of the housing (3.3).

3. The automatic welding device for box-shaped steel members according to claim 1 is characterized in that: A through hole is provided at the end of the movable rod 2 (4.4), a threaded rod (4.6) is inserted into the through hole, the rod body of the threaded rod (4.6) is threadedly connected to two nuts (4.5), a sleeve (4.7) is provided at one end of the threaded rod (4.6), a welding gun (7) is inserted into the sleeve (4.7), and the sleeve (4.7) is provided with a locking screw for locking and fixing the welding gun (7).

4. The automatic welding device for box-shaped steel members according to claim 1 is characterized in that: The end of the movable rod 1 (4.1) facing the box-shaped steel member is provided with a fixed block (4.9), and the side of the fixed block (4.9) that contacts the box-shaped steel member is provided with a plurality of universal balls. The rod body of the movable rod 1 (4.1) is also sleeved with a return spring (4.10), and the two ends of the return spring (4.10) contact the fixed block (4.9) and the connecting rod (5) respectively.

5. The automatic welding device for box-shaped steel members according to claim 1 is characterized in that: The positioning plate (4.8) is located at the front end of the traveling direction of the welding gun (7).

6. The automatic welding device for box-shaped steel members according to claim 1 is characterized in that: The lower end surface of the positioning plate (4.8) is provided with a plurality of universal balls, the side surface of the positioning plate (4.8) that contacts the flange of the box-shaped steel member is provided with a plurality of universal balls, and the lower end surface of the positioning plate (4.8) is also provided with a touch switch, which is electrically interlocked with the lifting device (2).

7. The automatic welding device for box-shaped steel members according to claim 2 is characterized in that: The lifting device (2) is an electric cylinder, and the upper end of the lifting device (2) is connected to the housing (3.3) via a connecting seat.

8. The automatic welding device for box-shaped steel members according to claim 7 is characterized in that: The power trolley (1) contains a battery, which supplies power to the lifting device (2) and the motor (3.1).

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