Door frame semi-automatic welding device and door frame welding method

Abstract

The invention relates to a door frame semi-automatic welding device and a door frame welding method. The door frame semi-automatic welding device comprises a lifting device, a welding device and a welding device, the welding gun adjusting assembly is arranged on the two-dimensional plane moving platform, a welding gun body is fixed to the welding gun adjusting assembly, and the welding gun adjusting assembly is configured to drive height adjustment and angle adjustment of the welding gun body; the lifting device is configured to drive the two-dimensional plane moving platform to ascend and descend, and the two-dimensional plane moving platform is configured to drive the welding gun body to move to be close to a welding bead path and can move along the straight line of the welding bead path. According to the semi-automatic welding device for the door frame, through cooperative work of the lifting device, the two-dimensional plane moving platform, the welding gun adjusting assembly and the welding gun body, automatic welding of a welding bead between the door frame and a box opening is achieved. The welding device not only improves welding efficiency and welding quality, but also reduces manual intervention and labor intensity.

Description

Technical Field

[0001] The present application relates to the field of box door frame welding, and in particular to a door frame semi-automatic welding device and a door frame welding method. Background Art

[0002] The box body is mainly assembled by upper, lower, left and right side panels and door frames. The upper side panel is usually used as the top cover of the box body, while the lower side panel is used as the bottom support of the box body. The two together ensure the stability and load-bearing capacity of the box body. The left and right side panels are located on both sides of the box body. They are connected with the upper and lower side panels to form the side walls of the box body, providing necessary enclosure and support for the box body. The door frame is mainly welded by two long and two short strips. The rectangular frame must ensure the flatness of the bottom surface of the four sides of the door frame and the verticality between adjacent sides. The door frame is then welded to the front and rear sides of the box body, and the 8 door frame welds at the box mouth or box tail need to be welded.

[0003] In the related art, the traditional manual welding method is usually adopted, which is time-consuming and has a large welding workload; and when the door frame is manually welded, the welding quality is uneven, which seriously hinders the production progress of the box. Summary of the invention

[0004] The present application provides a door frame semi-automatic welding device and a door frame welding method, which can solve the problem that the traditional manual welding method is time-consuming and labor-intensive; and when the door frame is manually welded, the welding quality is uneven, which seriously hinders the production progress of the box.

[0005] In a first aspect, an embodiment of the present application provides a door frame semi-automatic welding device, comprising:

[0006] A lifting device, wherein the lifting device is equipped with a two-dimensional planar moving platform;

[0007] A welding gun adjustment component, the welding gun adjustment component is arranged on the two-dimensional plane moving platform, the welding gun adjustment component is fixed with a welding gun body, and the welding gun adjustment component is configured to drive the height adjustment and angle adjustment of the welding gun body;

[0008] The lifting device is configured to drive the two-dimensional plane moving platform to lift and lower, and the two-dimensional plane moving platform is configured to drive the welding gun body to move close to the weld path and can move linearly along the weld path.

[0009] In combination with the first aspect, in one implementation, the two-dimensional plane moving platform includes:

[0010] a first guide rail, the first guide rail being fixed to the lifting device;

[0011] An installation box body, wherein the installation box body is rotatably connected to four guide wheels, and on two opposite sides of the first guide rail, the first side of the first guide rail is in contact with two of the guide wheels, and the second side of the first guide rail is in contact with the other two guide wheels;

[0012] A first drive motor, the first drive motor is installed on the installation box, the first drive motor is coaxially fixed with one of the guide wheels, and the first drive motor can drive the installation box to move along the length direction of the first guide rail;

[0013] A second guide rail, the second guide rail is perpendicular to the first guide rail, the second guide rail is slidably connected to the installation box, and a rack is fixed along the length direction of the second guide rail;

[0014] A second driving motor is installed on the installation box, and a gear is fixed to the output end of the second driving motor, and the gear is meshed with the rack.

[0015] In combination with the first aspect, in one embodiment, the welding gun adjustment assembly includes:

[0016] A clamping block, wherein the clamping block is provided with a groove, the clamping block is threadedly connected with a first threaded rod, one end of the first threaded rod passes through the groove and is fixed with a limiting block, and the first threaded rod can drive the limiting block to clamp and fix the moving end of the two-dimensional plane moving platform in the groove;

[0017] A height adjustment component, wherein the height adjustment component is arranged on the clamping block;

[0018] An angle adjustment component, wherein the angle adjustment component is arranged on the height adjustment component;

[0019] The welding gun body is fixed to the angle adjustment assembly.

[0020] In combination with the first aspect, in one embodiment, the height adjustment assembly includes:

[0021] A fixing block, the fixing block is fixed to the clamping block, and the fixing block is threadedly connected with a second threaded rod;

[0022] The angle adjustment component is fixed to a threaded block on the outer wall of the second threaded rod, and the second threaded rod can adjust the height of the angle adjustment component.

[0023] In combination with the first aspect, in one implementation, the angle adjustment device includes:

[0024] A third drive motor is fixed to a threaded block on the outer wall of the second threaded rod, and an output end of the third drive motor is fixed to the welding gun body.

[0025] In combination with the first aspect, in one implementation, a connection block is fixed to the output end of the third drive motor, and the connection block is fixed with a fixing bolt;

[0026] The connection block is fitted with an L-shaped plate, the L-shaped plate is provided with a strip hole, and one end of the fixing bolt passing through the strip hole is threadedly connected with a nut;

[0027] The welding gun body is fixed to the L-shaped plate, and the welding gun body can adjust its own height position through the strip hole.

[0028] In combination with the first aspect, in one embodiment, the L-shaped plate is fixed with a fixed plate, the fixed plate is hinged with a movable plate, the fixed plate and the movable plate are provided with arc grooves on one side facing each other, the welding gun body is arranged in the two arc grooves, and a spring is connected between the fixed plate and the movable plate.

[0029] In a second aspect, an embodiment of the present application provides a door frame welding method using the door frame semi-automatic welding device as described in some of the above embodiments, which comprises the following steps:

[0030] The welding gun body is raised to the position above the weld bead to be welded at the bottom of the box opening and the door frame by using the lifting device, and the welding gun body is driven to move close to the starting position of the weld bead by using the two-dimensional plane moving platform;

[0031] The welding gun adjustment assembly is used to further adjust the height and welding angle of the welding gun body before welding, and the two-dimensional plane moving platform is started to drive the welding gun body to move linearly along the length direction of the weld bead to complete the welding work of the first weld bead;

[0032] Use the lifting device to continue to raise the welding gun body to the bottom of the weld to be welded at the box opening and the top of the door frame, and use the welding gun adjustment assembly to further adjust the height and welding angle of the welding gun body, and start the two-dimensional plane moving platform to drive the welding gun body to move in a straight line in the length direction of the weld to complete the welding of the second weld.

[0033] In combination with the second aspect, in one embodiment, after the welding torch body is further raised to below the weld bead to be welded at the box opening and the top of the door frame by using the lifting device, and the height and welding angle of the welding torch body are further adjusted by using the welding torch adjustment assembly, and the two-dimensional plane moving platform is started to drive the welding torch body to move linearly in the length direction of the weld bead, and the welding work of the second weld bead is completed, it includes:

[0034] Rotate the box body 90 degrees, use the welding gun adjustment assembly to adjust the height and welding angle of the welding gun body, and start the two-dimensional plane moving platform to drive the welding gun body to move linearly along the length direction of the weld to be welded at the box opening and the top of the door frame to complete the welding of the third weld;

[0035] The lifting device is used to drive the welding gun body to descend to the top of the weld bead to be welded at the bottom of the box opening and the door frame, and the height and welding angle of the welding gun body are adjusted by the welding gun adjustment assembly;

[0036] The two-dimensional plane moving platform is started to drive the welding gun body to move linearly along the length direction of the weld to be welded at the box opening and the bottom end of the door frame to complete the welding work of the fourth weld.

[0037] In combination with the second aspect, in one embodiment, before the welding gun body is raised to the top of the weld bead to be welded at the bottom of the box opening and the door frame by using the lifting device, and the welding gun body is driven to move close to the starting position of the weld bead by using the two-dimensional plane moving platform, it includes:

[0038] Fix the door frame and the box opening by spot welding, and place the box on the workbench after spot welding.

[0039] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0040] The welding gun body can be driven to the set height by the lifting device, and initially located near the weld bead between the box opening and the door frame. The welding gun body can be driven to continue to move close to the starting position of the weld bead by the two-dimensional plane moving platform. Then, the height difference between the welding gun body and the weld bead path and the angle difference between the welding gun body and the weld bead are further adjusted by the welding gun adjustment component to complete the positioning preparation of the welding gun body. Finally, the welding gun body is driven to move in a straight line along the weld bead path by the two-dimensional plane moving platform to complete the welding of a weld bead between the door frame and the box opening. It solves the technical problems that traditional manual welding is time-consuming and has a large welding workload; and when manually welding the weld bead door frame, the welding quality is uneven, which seriously hinders the production progress of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0042] Figure 1 It is a three-dimensional structural schematic diagram of a door frame semi-automatic welding device;

[0043] Figure 2 It is a schematic diagram of the three-dimensional structure of a two-dimensional plane mobile platform;

[0044] Figure 3 It is a three-dimensional structural schematic diagram of a welding gun adjustment assembly;

[0045] Figure 4 It is a schematic diagram of the movement of the welding gun body in the first weld pass in the door frame welding method.

[0046] In the figure: 1. lifting device; 2. two-dimensional plane moving platform; 21. first guide rail; 22. mounting box; 23. guide wheel; 24. second guide rail; 3. welding gun adjustment assembly; 31. clamping block; 32. first threaded rod; 33. height adjustment assembly; 331. fixed block; 332. second threaded rod; 34. angle adjustment assembly; 341. third drive motor; 342. connecting block; 343. L-shaped plate; 35. fixed plate; 36. movable plate; 4. welding gun body; 5. door frame; 6. workbench. DETAILED DESCRIPTION

[0047] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0048] The embodiments of the present application provide a method to solve the problem that the traditional manual welding method is time-consuming and labor-intensive; and when manually welding the door frame, the welding quality is uneven, which seriously hinders the production progress of the box.

[0049] First, as Figure 1 As shown, an embodiment of the present application is a semi-automatic welding device for a door frame, which includes: a lifting device 1, the lifting device 1 is equipped with a two-dimensional plane moving platform 2; a welding gun adjustment component 3, the welding gun adjustment component 3 is arranged on the two-dimensional plane moving platform 2, the welding gun adjustment component 3 is fixed with a welding gun body 4, and the welding gun adjustment component 3 is configured to drive the welding gun body 4 to adjust the height and angle; the lifting device 1 is configured to drive the two-dimensional plane moving platform 2 to rise and fall, and the two-dimensional plane moving platform 2 is configured to drive the welding gun body 4 to move close to the weld path, and can move in a straight line along the weld path.

[0050] In this embodiment, the design of the door frame semi-automatic welding device is intended to improve welding efficiency and welding quality, while reducing manual intervention, thereby speeding up the production progress of the box. The lifting device 1 is the basis of the entire welding device, which is responsible for driving the two-dimensional plane moving platform 2 and the welding gun adjustment component 3 and the welding gun body 4 thereon to move in the vertical direction. Through the lifting device 1, the welding gun body 4 can be accurately positioned near the weld bead between the box opening and the door frame 5, providing convenience for subsequent welding work. The two-dimensional plane moving platform 2 is installed on the lifting device 1, and can drive the welding gun body 4 to move in two directions in the horizontal plane. After the lifting device 1 preliminarily positions the welding gun body 4 near the weld bead, the two-dimensional plane moving platform 2 can further finely adjust the position of the welding gun body 4 so that it moves accurately to the starting end of the weld bead. At the same time, during the welding process, the two-dimensional plane moving platform 2 can also drive the welding gun body 4 to move in a straight line along the weld bead path to ensure the continuity and accuracy of welding. The welding gun adjustment component 3 is arranged on the two-dimensional plane moving platform 2, which is used to fix the welding gun body 4 and realize the height and angle adjustment of the welding gun body 4. After the welding gun body 4 is moved to the start of the weld, the welding gun adjustment assembly 3 can further adjust the height difference and angle difference between the welding gun body 4 and the weld path to ensure that the welding gun body 4 is welded in the best posture, thereby improving the welding quality. The welding gun body 4 is the core component of the welding device and is responsible for performing the welding operation. Under the coordinated action of the lifting device 1, the two-dimensional plane moving platform 2 and the welding gun adjustment assembly 3, the welding gun body 4 can accurately locate the weld position and weld in the best posture, thereby ensuring the accuracy and quality of welding. In summary, the door frame semi-automatic welding device realizes the automatic welding of the weld between the door frame 5 and the box mouth through the coordinated work of the lifting device 1, the two-dimensional plane moving platform 2, the welding gun adjustment assembly 3 and the welding gun body 4. This welding device not only improves the welding efficiency and welding quality, but also reduces manual intervention and labor intensity, providing strong technical support for the production of the box.

[0051] In combination with the first aspect, in one embodiment, Figure 2As shown, the two-dimensional plane moving platform 2 includes: a first guide rail 21, which is fixed to the lifting device 1; a mounting box 22, which is rotatably connected to four guide wheels 23, and on the opposite sides of the first guide rail 21, the first side of the first guide rail 21 is in contact with two of the guide wheels 23, and the second side of the first guide rail 21 is in contact with the other two guide wheels 23; a first drive motor, which is mounted on the mounting box 22, and the first drive motor is coaxially fixed to one of the guide wheels 23, and the first drive motor can drive the mounting box 22 to move along the length direction of the first guide rail 21; a second guide rail 24, which is perpendicular to the first guide rail 21, and the second guide rail 24 is slidably connected to the mounting box 22, and the second guide rail 24 is fixed with a rack along its own length direction; a second drive motor, which is mounted on the mounting box 22, and a gear is fixed to the output end of the second drive motor, and the gear is meshed with the rack.

[0052] In this embodiment, the first guide rail 21 is fixed on the lifting device 1, providing a track for the installation box 22 to move along its length direction. : Guided by the first guide rail 21, the installation box 22 can stably move in the front and rear directions, thereby driving the welding gun body 4 to move along the weld path. The installation box 22 is the main bearing component of the two-dimensional plane mobile platform 2, and it is rotatably connected with four guide wheels 23. These four guide wheels 23 are respectively attached to the opposite sides of the first guide rail 21, ensuring the stability and accuracy of the installation box 22 during the movement. The design of the guide wheel 23 enables the installation box 22 to move smoothly along the first guide rail 21, while reducing friction and wear, and improving the service life of the equipment. The first drive motor is installed on the installation box 22 and is coaxially fixed with one of the guide wheels 23. When the first drive motor is started, it drives the guide wheel 23 coaxially fixed thereto to rotate, thereby driving the installation box 22 to move along the length direction of the first guide rail 21. In this way, the welding gun body 4 can be accurately moved to the starting position of the weld. The second guide rail 24 is perpendicular to the first guide rail 21 and is slidably connected to the mounting box 22. The second guide rail 24 is fixed with a rack along its length direction, providing a moving track for the welding gun body 4 in the direction of moving close to the weld. Through the cooperation of the second guide rail 24 and the rack, the welding gun body 4 can move stably. The second drive motor is installed on the mounting box 22, and a gear is fixed at its output end, which is engaged with the rack on the second guide rail 24. When the second drive motor is started, it drives the gear to rotate, thereby driving the second guide rail 24 to move along its own length direction. In this way, the welding gun body 4 can be accurately moved to a position near the weld and perform precise welding operations. In summary, this embodiment realizes the precise movement of the two-dimensional plane moving platform 2 in the front and back directions (moving close to or away from the weld direction) and left and right directions (weld length direction) through the coordinated work of the first guide rail 21, the mounting box 22, the guide wheel 23, the first drive motor, the second guide rail 24, the rack, and the second drive motor and the gear. This design not only improves the flexibility and accuracy of the welding device, but also further ensures the welding quality and efficiency.

[0053] In combination with the first aspect, in one embodiment, Figure 3 As shown, the welding gun adjustment assembly 3 includes: a clamping block 31, the clamping block 31 is provided with a groove, the clamping block 31 is threadedly connected with a first threaded rod 32, the first threaded rod 32 passes through one end of the groove to fix a limiting block, and the first threaded rod 32 can drive the limiting block to clamp and fix the moving end of the two-dimensional plane moving platform 2 in the groove; a height adjustment assembly 33, the height adjustment assembly 33 is arranged on the clamping block 31; the angle adjustment assembly 34, the angle adjustment assembly 34 is arranged on the height adjustment assembly 33; the welding gun body 4 is fixed to the angle adjustment assembly 34.

[0054] In this embodiment, the welding gun adjustment assembly 3 mainly includes a clamping block 31, a height adjustment assembly 33 and an angle adjustment assembly 34, and the welding gun body 4 is fixed to the angle adjustment assembly 34. The clamping block 31 is designed with a groove, and the first threaded rod 32 connected by a thread drives the limit block to clamp and fix the moving end of the two-dimensional plane moving platform 2. The height adjustment assembly 33 is arranged on the clamping block 31, and is used to adjust the height of the welding gun in the vertical direction. The angle adjustment assembly 34 is located above the height adjustment assembly 33, allowing the angle of the welding gun body 4 to be adjusted to meet the needs of the welding operation. Such a design allows the welding gun to be flexibly adjusted according to different welding requirements to ensure the accuracy and quality of welding.

[0055] In combination with the first aspect, in one embodiment, Figure 3 As shown, the height adjustment assembly 33 includes: a fixed block 331, which is fixed to the clamping block 31 through a transverse plate, and the fixed block 331 is threadedly connected with a second threaded rod 332; the angle adjustment assembly 34 is fixed to the second threaded rod 332, and the second threaded rod 332 can adjust the height of the angle adjustment assembly 34. The fixed block 331 has a chamber, and the second threaded rod 332 penetrates into the chamber, and a threaded block is slidably connected in the chamber, and the threaded block is threadedly connected to the second threaded rod 332, and the angle adjustment assembly 34 is fixed to the threaded block through a connecting plate.

[0056] In this embodiment, the fixed block 331 is fixed to the clamping block 31 through a cross plate to provide stable support for height adjustment. A chamber is provided inside the fixed block 331 to accommodate a part of the structure of the threaded block and the second threaded rod 332. The second threaded rod 332 penetrates into the chamber of the fixed block 331 and is threadedly connected to the threaded block in the chamber. By rotating the second threaded rod 332, the threaded block can be driven to slide up and down in the chamber. The movement of the threaded block drives the height change of the connecting plate and the angle adjustment assembly 34 fixed thereto. The connecting plate is fixedly connected to the threaded block to ensure that the angle adjustment assembly 34 can move up and down with the movement of the threaded block. The welding gun body 4 is fixedly mounted on the angle adjustment assembly 34, and the welding gun is precisely controlled in position, height and angle through the comprehensive adjustment of the clamping block 31, the height adjustment assembly 33 (including the fixed block 331, the second threaded rod 332, the threaded block and the connecting plate) and the angle adjustment assembly 34. Such a design not only realizes the flexible adjustment of the height of the welding gun, but also realizes the precise adjustment of the welding gun angle through the angle adjustment assembly 34. At the same time, the connection between the components is stable and reliable, ensuring the stability and accuracy of the welding gun during operation.

[0057] In combination with the first aspect, in one embodiment, Figure 3As shown, the angle adjustment device includes: a third drive motor 341, the third drive motor 341 is fixed to a connecting plate fixed on a threaded block on the outer wall of the second threaded rod 332, and the output end of the third drive motor 341 is fixed to the welding gun body 4.

[0058] In this embodiment, the third drive motor 341 is the core component of the angle adjustment. It is fixed to the threaded block on the outer wall of the second threaded rod 332 and fixed by the connecting plate. This means that when the height adjustment is completed, the third drive motor 341 and the attached welding gun body 4 will be at the required height together with the threaded block. By controlling the rotation of the third drive motor 341, the angle of the welding gun body 4 can be accurately adjusted. The accuracy and stability of the angle adjustment are ensured. This design enables the welding gun to flexibly adapt to different welding angle requirements.

[0059] In combination with the first aspect, in one embodiment, Figure 3 As shown, a connecting block 342 is fixed to the output end of the third driving motor 341, and a fixing bolt is fixed to the connecting block 342; an L-shaped plate 343 is fitted to the connecting block 342, and a strip hole is opened in the L-shaped plate 343, and a nut is threadedly connected to one end of the fixing bolt passing through the strip hole; the welding gun body 4 is fixed to the L-shaped plate 343, and the welding gun body 4 can adjust its own height position through the strip hole.

[0060] In this embodiment, the connecting block 342 is fixed on the output end of the third drive motor 341. It provides a stable connection point for the welding gun body 4. The fixing bolt passes through the connecting block 342 and is used to cooperate with the strip hole on the L-shaped plate 343. The L-shaped plate 343 is attached to the connecting block 342 and is provided with a strip hole. This strip hole allows the welding gun body 4 to have a certain adjustment range in the vertical direction. One end of the fixing bolt passing through the strip hole is fastened by a nut. By loosening and tightening the nut, the position of the welding gun body 4 in the strip hole can be adjusted to change its height. The welding gun body 4 is fixed on the L-shaped plate 343. Since the L-shaped plate 343 and the connecting block 342 are connected in an adjustable manner through the strip hole and the fixing bolt, the welding gun body 4 can not only change the angle under the drive of the third drive motor 341, but also change the height by adjusting its position in the strip hole. This design enables the welding gun adjustment assembly 3 to maintain the flexibility of height and angle adjustment while increasing the fine-tuning ability of the welding gun body 4 in the height direction. By simply tightening the nut and moving the position of the welding gun body 4 in the strip hole, the height of the welding gun can be precisely adjusted. This design improves the practicality and adaptability of the welding gun adjustment assembly 3.

[0061] In combination with the first aspect, in one embodiment, Figure 3As shown, the L-shaped plate 343 is fixed with a fixed plate 35, and the fixed plate 35 is hinged with a movable plate 36. The fixed plate 35 and the movable plate 36 are both provided with arc grooves on one side facing each other, the welding gun body 4 is arranged in the two arc grooves, and a spring is connected between the fixed plate 35 and the movable plate 36.

[0062] In this embodiment, the fixed plate 35 is fixed on the L-shaped plate 343, providing a support point for the welding gun body 4. The movable plate 36 is hingedly connected to the fixed plate 35, so that the movable plate 36 can rotate at a certain angle relative to the fixed plate 35. The fixed plate 35 and the movable plate 36 are both provided with arc grooves on the sides facing each other. The two arc grooves together constitute the accommodating space of the welding gun body 4. The welding gun body 4 is placed in the two arc grooves, and the welding gun body 4 can be stably fixed between the fixed plate 35 and the movable plate 36 through the limiting effect of the arc grooves. A spring is connected between the fixed plate 35 and the movable plate 36. The function of the spring is to provide an elastic force to the movable plate 36 in the direction of the fixed plate 35, thereby ensuring that the welding gun body 4 is tightly clamped in the two arc grooves. At the same time, the elasticity of the spring also allows the welding gun body 4 to have a certain buffer and adjustment space when it is subjected to external force.

[0063] In combination with the first aspect, in one embodiment, Figure 1 As shown, the lifting device includes a crane with a maximum load-bearing capacity of 500kg, including a lifting column, a lifting cylinder, a fork frame and a shelf. The lifting column is made of C-shaped steel processed by cold bending to reduce its own weight; the cylinder is placed in the middle of the column to prevent the crane from being eccentric. The lifting cylinder provides lifting power to realize the up and down movement of the lifting platform. The two-dimensional plane moving platform 2 is fixed to the lifting platform.

[0064] Second, as Figure 4 As shown, an embodiment of the present application provides a door frame welding method using the door frame semi-automatic welding device mentioned in some of the above embodiments, which includes the following steps:

[0065] S1: using the lifting device 1 to raise the welding gun body 4 to the top of the weld bead to be welded at the bottom of the box opening and the door frame 5, and using the two-dimensional plane moving platform 2 to drive the welding gun body 4 to move close to the starting position of the weld bead;

[0066] S2: Use the welding gun adjustment assembly 3 to further adjust the height and welding angle of the welding gun body 4 before welding, and start the two-dimensional plane moving platform 2 to drive the welding gun body 4 to move linearly along the length direction of the weld bead to complete the welding work of the first weld bead;

[0067] S3: Use the lifting device 1 to continue to raise the welding gun body 4 to the bottom of the weld to be welded at the top of the box opening and the door frame 5, and use the welding gun adjustment component 3 to further adjust the height and welding angle of the welding gun body 4, and start the two-dimensional plane moving platform 2 to drive the welding gun body 4 to move linearly in the length direction of the weld to complete the welding of the second weld.

[0068] In this embodiment, the lifting device 1 is used to lift the welding gun body 4 to the top of the weld bead to be welded at the bottom of the box opening and the door frame 5. This step is to ensure that the welding gun body 4 is in the correct vertical position at the beginning, which is convenient for subsequent welding operations. The two-dimensional plane moving platform 2 is started to drive the welding gun body 4 to move to the starting position of the weld bead. This step is to ensure that the welding gun body 4 is aligned with the weld bead to be welded on the horizontal plane to prepare for subsequent welding work. The welding gun adjustment assembly 3 is used to further adjust the pre-welding height and welding angle of the welding gun body 4. This step is to ensure that the welding gun body 4 can maintain a stable posture during the welding process, so as to obtain a high-quality welding effect. The two-dimensional plane moving platform 2 is started to drive the welding gun body 4 to move in a straight line along the length direction of the weld bead. This step is to complete the welding work of the first weld bead and ensure the continuity and uniformity of the welding. The lifting device 1 is used to continue to raise the welding gun body 4 to the bottom of the weld bead to be welded at the top of the box opening and the door frame 5. This step is to adapt to the requirements of welds of different heights and ensure that the welding gun body 4 can accurately reach the position to be welded. The welding gun adjustment assembly 3 is used again to further adjust the height and welding angle of the welding gun body 4. This step is to ensure that the welding gun body 4 can maintain the best posture and angle when welding the second weld. Start the two-dimensional plane moving platform 2 to drive the welding gun body 4 to move linearly along the length direction of the weld. This step is to complete the welding work of the second weld and ensure the welding quality and aesthetics of the entire door frame. The door frame welding method realizes precise welding of the door frame 5 through the synergistic effect of the lifting device 1, the two-dimensional plane moving platform 2 and the welding gun adjustment assembly 3. By welding the welds at the bottom and the top respectively, the integrity and firmness of the welding are ensured. At the same time, the method also has the advantages of simple operation, high efficiency, stable welding quality, etc., and is suitable for welding operations of various door frames.

[0069] In conjunction with the second aspect, in one implementation, after S3, the following steps are included:

[0070] S4: Rotate the box body 90 degrees, use the welding gun adjustment assembly 3 to adjust the height and welding angle of the welding gun body 4, and start the two-dimensional plane moving platform 2 to drive the welding gun body 4 to move linearly along the length direction of the weld to be welded at the box opening and the top of the door frame 5, and complete the welding of the third weld;

[0071] S5: Use the lifting device 1 to drive the welding gun body 4 to descend to the top of the weld bead to be welded at the bottom of the box opening and the door frame 5, and use the welding gun adjustment assembly 3 to adjust the height and welding angle of the welding gun body 4;

[0072] S6: The two-dimensional plane moving platform 2 is started to drive the welding gun body 4 to move linearly along the length direction of the weld to be welded at the box opening and the bottom end of the door frame 5, and the welding work of the fourth weld is completed.

[0073] In this embodiment, the box is rotated ninety degrees to weld the weld on the other side of the door frame 5. The height and welding angle of the welding gun body 4 are adjusted by the welding gun adjustment assembly 3 to adapt to the welding position after rotation. The two-dimensional plane moving platform 2 is started to drive the welding gun body 4 to move linearly along the length direction of the weld to be welded at the top of the box opening and the door frame 5 to complete the welding of the third weld. The lifting device 1 is used to drive the welding gun body 4 to descend to the top of the weld to be welded at the bottom of the box opening and the door frame 5. The height and welding angle of the welding gun body 4 are adjusted again by the welding gun adjustment assembly 3 to ensure the accuracy and quality of welding. The two-dimensional plane moving platform 2 is started to drive the welding gun body 4 to move linearly along the length direction of the weld to be welded at the bottom of the box opening and the door frame 5 to complete the welding of the fourth weld. The door frame welding method realizes all-round and precise welding of the door frame 5 through the synergistic effect of the lifting device 1, the two-dimensional plane moving platform 2 and the welding gun adjustment assembly 3, as well as the newly added box rotation step. By welding the welds at the bottom, the top and the two sides after rotation respectively, the integrity and firmness of the welding are ensured.

[0074] In conjunction with the second aspect, in one implementation, before S1, the following steps are included:

[0075] S0: The door frame 5 is fixed to the box opening of the box body by spot welding, and the box body after spot welding is placed on the workbench 6.

[0076] In this embodiment, the door frame 5 is fixed to the box opening of the box body by spot welding. This step is to ensure that the door frame 5 and the box body can maintain a relatively stable positional relationship during the subsequent welding process to avoid affecting the welding quality due to movement or offset. The box body fixed by spot welding is placed on a workbench 6. The workbench 6 provides a stable foundation for the welding operation, ensuring the smooth progress of the welding process.

[0077] In combination with the second aspect, in one embodiment, after completing S6, the four welds between the box opening and the outside of the door frame 5 are completed, and then steps S1-S6 are repeated to continue to complete the four welds between the box opening and the inside of the door frame 5, that is, eight welds between the box opening and the door frame 5 are completed. Similarly, the welding method between the box tail and another door frame 5 is the same, and will not be described in detail.

[0078] In combination with the second aspect, in one embodiment, the height distance between the welding gun body 4 and the weld is 2±0.05 mm, the angle is 15±1°, the set current is 90-130A, the voltage is 25-30V, and the travel speed of the welding gun body 4 is 27-32cm / min. Specifically, for boxes of different plate thicknesses during welding, the welding parameters used are shown in Table 1 below.

[0079] Table 1

[0080] Thickness(mm) Current (A) Voltage (V) Welding gun travel speed (cm / min) 2 92 26 31 4 128 28 29

[0081] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0082] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0083] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A door frame semi-automatic welding device, characterized in that: It includes: A lifting device (1), wherein the lifting device (1) is equipped with a two-dimensional planar moving platform (2); A welding gun adjustment component (3), the welding gun adjustment component (3) being arranged on the two-dimensional plane moving platform (2), the welding gun adjustment component (3) being fixed with a welding gun body (4), and the welding gun adjustment component (3) being configured to drive the welding gun body (4) to adjust its height and angle; The lifting device (1) is configured to drive the two-dimensional plane moving platform (2) to lift and lower, and the two-dimensional plane moving platform (2) is configured to drive the welding gun body (4) to move close to the weld path and can move linearly along the weld path.

2. The door frame semi-automatic welding device according to claim 1, characterized in that: The two-dimensional plane moving platform (2) comprises: A first guide rail (21), wherein the first guide rail (21) is fixed to the lifting device (1); An installation box (22), wherein the installation box (22) is rotatably connected to four guide wheels (23), wherein on two opposite sides of the first guide rail (21), the first side of the first guide rail (21) is in contact with two of the guide wheels (23), and the second side of the first guide rail (21) is in contact with the other two guide wheels (23); a first drive motor, the first drive motor being mounted on the mounting box (22), the first drive motor being coaxially fixed to one of the guide wheels (23), and the first drive motor being capable of driving the mounting box (22) to move along the length direction of the first guide rail (21); A second guide rail (24), the second guide rail (24) is perpendicular to the first guide rail (21), and the second guide rail (24) is slidably connected to the installation box (22), and a rack is fixed along the length direction of the second guide rail (24); A second drive motor is installed on the installation box (22), and a gear is fixed to the output end of the second drive motor, and the gear is meshed with the rack.

3. The door frame semi-automatic welding device according to claim 1, characterized in that: The welding gun adjustment assembly (3) comprises: A clamping block (31), wherein the clamping block (31) is provided with a groove, and the clamping block (31) is threadedly connected with a first threaded rod (32), and the first threaded rod (32) passes through one end of the groove to fix a limit block, and the first threaded rod (32) can drive the limit block to clamp and fix the moving end of the two-dimensional plane moving platform (2) in the groove; A height adjustment component (33), wherein the height adjustment component (33) is arranged on the clamping block (31); An angle adjustment component (34), wherein the angle adjustment component (34) is arranged on the height adjustment component (33); The welding gun body (4) is fixed to the angle adjustment assembly (34).

4. The door frame semi-automatic welding device according to claim 3, characterized in that: The height adjustment component (33) comprises: A fixing block (331), wherein the fixing block (331) is fixed to the clamping block (31), and the fixing block (331) is threadedly connected to a second threaded rod (332); The angle adjustment component (34) is fixed to a threaded block on the outer wall of the second threaded rod (332), and the second threaded rod (332) can adjust the height of the angle adjustment component (34).

5. The door frame semi-automatic welding device according to claim 4, characterized in that: The angle adjustment device comprises: A third drive motor (341), the third drive motor (341) is fixed to a threaded block on the outer wall of the second threaded rod (332), and an output end of the third drive motor (341) is fixed to the welding gun body (4).

6. The door frame semi-automatic welding device according to claim 5, characterized in that: A connecting block (342) is fixed to the output end of the third driving motor (341), and a fixing bolt is fixed to the connecting block (342); The connection block (342) is fitted with an L-shaped plate (343), the L-shaped plate (343) is provided with a strip-shaped hole, and one end of the fixing bolt passes through the strip-shaped hole and is threadedly connected with a nut; The welding gun body (4) is fixed to the L-shaped plate (343), and the welding gun body (4) can adjust its own height position through the strip hole.

7. The door frame semi-automatic welding device according to claim 6, characterized in that: The L-shaped plate (343) is fixed with a fixed plate (35), and the fixed plate (35) is hinged with a movable plate (36). The fixed plate (35) and the movable plate (36) are both provided with arc grooves on one side facing each other, and the welding gun body (4) is arranged in the two arc grooves, and a spring is connected between the fixed plate (35) and the movable plate (36).

8. A door frame welding method using the door frame semi-automatic welding device according to any one of claims 1 to 7, characterized in that: It includes the following steps: The welding gun body (4) is raised to the position above the weld bead to be welded at the bottom of the box opening and the door frame (5) by using a lifting device (1), and the welding gun body (4) is driven to move close to the starting position of the weld bead by using a two-dimensional plane moving platform (2); The welding gun adjusting assembly (3) is used to further adjust the height and welding angle of the welding gun body (4) before welding, and the two-dimensional plane moving platform (2) is started to drive the welding gun body (4) to move linearly along the length direction of the weld bead, thereby completing the welding work of the first weld bead; The welding gun body (4) is further raised by the lifting device (1) to below the weld bead to be welded at the top of the box opening and the door frame (5), and the height and welding angle of the welding gun body (4) are further adjusted by the welding gun adjustment assembly (3), and the two-dimensional plane moving platform (2) is started to drive the welding gun body (4) to move linearly in the length direction of the weld bead, thereby completing the welding of the second weld bead.

9. The door frame welding method of the door frame semi-automatic welding device according to claim 8, characterized in that: After the welding torch body (4) is further raised to the position below the weld bead to be welded at the top of the box opening and the door frame (5) by the lifting device (1), and the height and welding angle of the welding torch body (4) are further adjusted by the welding torch adjustment assembly (3), and the two-dimensional plane moving platform (2) is started to drive the welding torch body (4) to move linearly in the length direction of the weld bead, and the welding work of the second weld bead is completed, the method includes: The box is rotated 90 degrees, and the height and welding angle of the welding gun body (4) are adjusted using the welding gun adjustment assembly (3), and the two-dimensional plane moving platform (2) is started to drive the welding gun body (4) to move linearly along the length direction of the weld to be welded at the box opening and the top of the door frame (5), thereby completing the welding of the third weld; The lifting device (1) is used to drive the welding gun body (4) to descend to the position above the weld bead to be welded at the bottom of the box opening and the door frame (5), and the welding gun adjustment assembly (3) is used to adjust the height and welding angle of the welding gun body (4); The two-dimensional plane moving platform (2) is started to drive the welding gun body (4) to move linearly along the length direction of the weld to be welded at the bottom end of the box opening and the door frame (5), thereby completing the welding of the fourth weld.

10. The door frame welding method of the door frame semi-automatic welding device according to claim 8, characterized in that: Before the welding gun body (4) is lifted to the position above the weld bead to be welded at the bottom of the box opening and the door frame (5) by using the lifting device (1), and the welding gun body (4) is driven to move close to the starting position of the weld bead by using the two-dimensional plane moving platform (2), the method comprises: The door frame (5) is fixed to the box opening of the box body by spot welding, and the box body after spot welding is placed on a workbench (6).

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