Automatic Welding Control System and Welding Method for Circular Welding Seams Using CO2 Gas Shielded Welding

Abstract

This invention relates to the field of gas shielded welding machine technology, specifically to an automatic welding control system and welding method for carbon dioxide gas shielded welding circumferential welds. The system includes a machine body, with a welding table fixedly connected to one side of the upper surface of the machine body. The welding table is equipped with a drive component and a welding module. The upper surface of the machine body has a transverse fixing surface for placing the workpiece horizontally, and this transverse fixing surface is located at the bottom of the welding module. Two transverse welding surface fixing modules are also provided on the upper surface of the machine body. A steering guide rail is fixedly connected to the inner wall of a longitudinal fixing groove, and a longitudinal welding surface fixing module is located inside the steering guide rail. This invention drives a motor to rotate a first gear, which in turn rotates two meshing first and second gears, driving the gas shielded welding machine body below to perform circumferential welding operations. This allows the equipment to process workpieces in different situations, improving its practicality.

Description

Technical Field

[0001] This invention relates to the field of gas shielded welding machine technology, and more specifically, to an automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds. Background Technology

[0002] Gas-shielded welding machines (GSW) have a drooping output characteristic, converting 220V and 380V AC power into low-voltage DC power. GSW machines are generally classified into two types based on the output power source: AC GSW machines and DC GSW machines. They possess the following characteristics: 1. Lightweight, compact, efficient, and reliable. 2. The welding current can output a rectangular pulse waveform, achieving a jet transition and facilitating all-position welding. 3. Automatic compensation for mains voltage fluctuations. 4. Automatic protection against overvoltage, undervoltage, overcurrent, and overheating. 5. Automatic compensation based on cable length, ensuring good welding performance for cables of different lengths.

[0003] However, when welding objects with a gas shielded welding machine, the movement is mostly circular, and the welding methods are diverse, including planar circular welding and three-dimensional circular welding. Most current gas shielded welding machine programs cannot simultaneously meet the requirements of both situations. Therefore, this application proposes an automatic welding control system and welding method for carbon dioxide gas shielded welding circular welds. Summary of the Invention

[0004] To address the shortcomings of existing methods, this invention provides an automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] An automatic welding control system for carbon dioxide gas shielded welding of circumferential welds includes a body. A welding table is fixedly connected to one side of the upper surface of the body. The welding table is equipped with a drive component and a welding module. The upper surface of the body has a transverse fixing surface for placing the weldment flat, and the transverse fixing surface is located at the bottom of the welding module. The upper surface of the body is also provided with two transverse welding surface fixing modules. The body also has a longitudinal fixing groove for placing the weldment vertically. The longitudinal fixing groove is coaxial with the transverse fixing surface. A steering guide rail is fixedly connected to the inner wall of the longitudinal fixing groove, and a longitudinal welding surface fixing module is arranged inside the steering guide rail.

[0007] The two transverse welding surface fixing modules are disposed at both ends of the transverse fixing surface to fix the welded parts that are placed flat on the transverse fixing surface;

[0008] The driving component is connected to the welding module, driving the welding module to make a circular motion with the geometric center of the transverse fixed surface as the circle;

[0009] An electric slide rail is installed inside the steering guide rail, which drives the longitudinal welding surface fixing module to slide along the steering guide rail and stop the welded part inside the longitudinal fixing groove.

[0010] Preferably, the longitudinal fixing groove has a circular cross-section, and the diameter increases from top to bottom, with the upper diameter of the longitudinal fixing groove being smaller than the minimum side length of the transverse fixing surface;

[0011] The bottom of the machine body is fixedly connected to several table legs, and the steering guide rail is L-shaped with rounded corners.

[0012] The drive unit consists of a motor, a first gear, and a second gear. The motor is fixed on the upper surface of the welding table. The first gear and the second gear are rotatably connected to the upper surface of the welding table and mesh with each other. The shaft between the second gear and the welding table extends to the bottom of the welding table and is connected to a welding module.

[0013] Preferably, the welding module includes a welding disk, which is fixedly connected to the shaft of the second gear, and a spindle is fixedly connected to the welding disk. The welding disk, the spindle, and the longitudinal fixing groove are coaxially arranged.

[0014] A second electric slide rail is fixedly connected to one end of the bottom of the shaft. A rod is fixedly connected to the guide shaft of the second electric slide rail, and the rod is fixedly connected to the body of the gas shielded welding machine. The top of the gas shielded welding machine body has a gas input hole, which is connected to a gas storage tank. The gas storage tank stores carbon dioxide inside.

[0015] Preferably, the longitudinal welding surface fixing module includes a fixing plate, with connecting rods fixedly connected to both sides of the fixing plate. The two ends of the connecting rods are fixedly connected to the guide shaft of the electric slide rail inside the steering guide rail. A limiting ring is provided on one side of the fixing plate, and a plurality of vacuum suction cups are provided inside the limiting ring for fixing the welded parts.

[0016] Preferably, a power supply and a vacuum pump are provided on the back of the limiting ring body. The vacuum pump provides power to the vacuum suction cup, and the power supply is electrically connected to the vacuum pump.

[0017] Preferably, the transverse welding surface fixing module includes a first electric slide rail, which is fixed to the upper surface of the machine body, and the guide shaft of the first electric slide rail located on the same side is fixedly connected to the clamping plate through a connector.

[0018] Meanwhile, this application also discloses a welding method for an automatic welding control system for carbon dioxide gas shielded welding of circumferential welds, which includes the following operation steps for transverse welding;

[0019] S1: Place the welded part flat on the horizontal fixed surface, and then start the first electric slide rail to drive the two opposing clamping plates to move closer to each other to fix the welded part;

[0020] S2: Then, drive the second electric slide rail to control the distance between the gas shielded welding machine body and the shaft, and control the welding torch in the gas shielded welding machine body to move downward and contact the welding workpiece;

[0021] S3: Next, drive the motor to rotate the first gear, which in turn rotates the two meshing first and second gears, driving the gas shielded welding machine body below to perform circumferential welding operations.

[0022] This application also discloses a welding method for an automatic welding control system for carbon dioxide gas shielded welding of circumferential welds, which includes the following steps for longitudinal welding:

[0023] S1: Place the welded part flat inside the steering guide rail, then align the tail of the welded part with the limiting ring, start the vacuum pump to fix the welded part with the vacuum suction cup, and then slide the drive part along the guide rail direction through the steering guide rail. During the sliding process, the welded part changes from a flat state to a vertical state.

[0024] S2: Then, drive the second electric slide rail to control the distance between the gas shielded welding machine body and the shaft, and control the welding torch in the gas shielded welding machine body to move downward and contact the welding workpiece;

[0025] S3: Next, drive the motor to rotate the first gear, which in turn rotates the two meshing first and second gears, driving the gas shielded welding machine body below to perform circumferential welding operations.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] During horizontal welding, the workpiece is placed flat on the horizontal fixed surface. Then, the first electric slide rail drives the two opposing clamping plates to move closer together and fix the workpiece. During vertical welding, the workpiece is placed flat inside the steering guide rail. The tail of the workpiece is then aligned with the limiting ring. The vacuum pump is activated to fix the workpiece with the vacuum suction cup. The drive component is then slid along the guide rail. During the sliding process, the workpiece changes from a flat to a vertical position. The second electric slide rail is then driven to control the distance between the gas shielded welding machine body and the shaft, controlling the welding torch in the gas shielded welding machine body to move downwards and contact the workpiece. Next, the motor is driven to rotate the first gear, causing the two meshing first and second gears to rotate, driving the gas shielded welding machine body below to perform circumferential welding. This allows the equipment to process workpieces in different situations, improving its practicality. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the overall structure of the automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds of the present invention;

[0029] Figure 2 This invention relates to an automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds. Figure 1 Enlarged structural diagram at point A;

[0030] Figure 3 This is a schematic diagram of the welding module of the automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the fixed plate in the automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds of the present invention;

[0032] Figure 5 This is a schematic diagram of the vacuum chuck of the automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds of the present invention.

[0033] Figure 6 This is a schematic diagram of the longitudinal fixing groove of the automatic welding control system and welding method for carbon dioxide gas shielded welding of annular welds of the present invention.

[0034] In the diagram: 1. Machine body; 2. Table legs; 3. Welding table; 4. Drive unit; 401. Motor; 402. First gear; 403. Second gear; 5. Welding module; 501. Welding disc; 502. Shaft; 503. Second electric slide rail; 504. Gas shielded welding machine body; 505. Gas input port; 6. Transverse welding surface fixing module; 601. First electric slide rail; 602. Connector; 603. Clamping plate; 7. Steering guide rail; 8. Longitudinal welding surface fixing module; 801. Fixing disc; 802. Connecting rod; 803. Power supply; 804. Vacuum pump; 805. Limiting ring; 806. Vacuum suction cup; 9. Gas storage tank; 10. Transverse fixing surface; 11. Longitudinal fixing groove. Detailed Implementation

[0035] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0036] Example

[0037] like Figures 1 to 6As shown, the automatic welding control system for CO2 gas shielded welding of circumferential welds includes a body 1. A welding table 3 is fixedly connected to one side of the upper surface of the body 1. The welding table 3 is equipped with a drive unit 4 and a welding module 5. The upper surface of the body 1 has a transverse fixing surface 10 for placing the welded parts horizontally, and the transverse fixing surface 10 is located at the bottom of the welding module 5. The upper surface of the body 1 is also equipped with two transverse welding surface fixing modules 6. The body 1 also has a longitudinal fixing groove 11 for placing the welded parts vertically. The longitudinal fixing groove 11 is coaxially arranged with the transverse fixing surface 10. A steering guide rail 7 is fixedly connected to the inner wall of the longitudinal fixing groove 11, and a longitudinal welding surface fixing module 8 is arranged inside the steering guide rail 7. The two transverse welding surface fixing modules 6 are located at both ends of the transverse fixing surface 10 to fix the welded parts placed horizontally on the transverse fixing surface 10. The drive unit 4... Connected to the welding module 5, the welding module 5 is driven to make a circular motion with the geometric center of the transverse fixed surface 10 as the center; an electric slide rail is installed inside the steering guide rail 7, which drives the longitudinal welding surface fixing module 8 to slide along the steering guide rail 7, stopping the welding part inside the longitudinal fixing groove 11. During transverse welding, the welding part is placed flat on the transverse fixed surface 10, and then the first electric slide rail 601 is activated to drive the two opposing clamping plates 603 to move closer to each other to fix the welding part. During vertical welding, the welding part is placed flat inside the steering guide rail 7, and then the tail of the welding part is aligned with the limiting ring 805. The vacuum pump 804 is activated to make the vacuum suction cup 806 fix the welding part, and then the driving component is slid along its guide rail direction through the steering guide rail 7. During the sliding process, the welding part changes from a flat state to a vertical state.

[0038] In this embodiment, the longitudinal fixing groove 11 has a circular cross-section, and the diameter increases from top to bottom. The upper diameter of the longitudinal fixing groove 11 is smaller than the minimum side length of the transverse fixing surface 10. Several table legs 2 are fixedly connected to the bottom of the machine body 1. The steering guide rail 7 is L-shaped and the corners are rounded. The driving component 4 consists of a motor 401, a first gear 402, and a second gear 403. The motor 401 is fixed to the upper surface of the welding table 3. The first gear 402 and the second gear 403 are rotatably connected to the upper surface of the welding table 3. The first gear 402 and the second gear 403 are meshed with each other. The shaft between the second gear 403 and the welding table 3 extends to the bottom of the welding table 3 and is connected to a welding module 5. The welding module 5 includes a welding disk 501. The welding disk 501 is fixedly connected to the shaft of the second gear 403. The welding disk 501 is fixedly connected to a spindle 502. The welding disk 501, the spindle 502, and the longitudinal fixing groove 11 are coaxially arranged.

[0039] A second electric slide rail 503 is fixedly connected to one end of the bottom of the spindle 502. A rod is fixedly connected to the guide shaft of the second electric slide rail 503, and the rod is fixedly connected to the gas shielded welding machine body 504. The top of the gas shielded welding machine body 504 has a gas input hole 505, which is connected to a gas storage tank 9. The gas storage tank 9 stores carbon dioxide. The longitudinal welding surface fixing module 8 includes a fixing plate 801. Connecting rods 802 are fixedly connected to both sides of the fixing plate 801. The two ends of the connecting rods 802 are fixedly connected to the guide shaft of the electric slide rail inside the steering guide rail 7. A limiting ring 805 is provided on one side of the fixing plate 801. Several vacuum suction cups 806 are provided inside the limiting ring 805 for fixing the welded parts.

[0040] In this embodiment, a power supply 803 and a vacuum pump 804 are provided on the back of the limiting ring 805. The vacuum pump 804 provides power to the vacuum suction cup 806. The power supply 803 and the vacuum pump 804 are electrically connected. The transverse welding surface fixing module 6 includes a first electric slide rail 601. The first electric slide rail 601 is fixed on the upper surface of the machine body 1. The guide shaft of the first electric slide rail 601 located on the same side is fixedly connected to the clamping plate 603 through a connector 602.

[0041] Meanwhile, this application also discloses a welding method for an automatic welding control system for carbon dioxide gas shielded welding of circumferential welds, which includes the following operation steps for transverse welding.

[0042] S1: Place the welded part flat on the horizontal fixing surface 10, and then start the first electric slide rail 601 to drive the two opposing clamping plates 603 to move closer to each other to fix the welded part.

[0043] S2: Then, drive the second electric slide rail 503 to control the distance between the gas shielded welding machine body 504 and the shaft 502, and control the welding torch in the gas shielded welding machine body 504 to move downward and contact the welding workpiece.

[0044] S3: Next, drive motor 401 to rotate the first gear 402, causing the two meshing first gear 402 and second gear 403 to rotate, driving the gas shielded welding machine body 504 below to perform circumferential welding operations.

[0045] Meanwhile, this application also discloses a welding method for an automatic welding control system for carbon dioxide gas shielded welding of circumferential welds, characterized in that: for longitudinal surface welding, the following operation steps are included:

[0046] S1: Place the welded part flat inside the steering guide rail 7, then align the tail of the welded part with the limiting ring 805, start the vacuum pump 804 to fix the welded part with the vacuum suction cup 806, and then slide the drive part along its guide rail direction through the steering guide rail 7. During the sliding process, the welded part changes from a flat state to a vertical state.

[0047] S2: Then, drive the second electric slide rail 503 to control the distance between the gas shielded welding machine body 504 and the shaft 502, and control the welding torch in the gas shielded welding machine body 504 to move downward and contact the welding workpiece.

[0048] S3: Next, drive motor 401 to rotate the first gear 402, causing the two meshing first gear 402 and second gear 403 to rotate, driving the gas shielded welding machine body 504 below to perform circumferential welding operations.

[0049] The working principle of the automatic welding control system and welding method for carbon dioxide gas shielded welding of circumferential welds is as follows: During transverse welding, the workpiece is placed flat on the transverse fixed surface 10. Then, the first electric slide rail 601 is activated to drive the two opposing clamping plates 603 to move closer together, fixing the workpiece. During vertical welding, the workpiece is placed flat inside the steering guide rail 7. Then, the tail of the workpiece is aligned with the limiting ring 805. The vacuum pump 804 is activated to fix the workpiece with the vacuum suction cup 806. Then, the drive unit is moved along the guide rail 7. The welding workpiece slides in a direction, changing from a horizontal to a vertical position during the sliding process. Then, the second electric slide rail 503 drives the distance between the gas shielded welding machine body 504 and the shaft 502, controlling the welding torch in the gas shielded welding machine body 504 to move downward and contact the welding workpiece. Next, the motor 401 drives the first gear 402 to rotate, causing the two meshing first gears 402 and second gears 403 to rotate, driving the gas shielded welding machine body 504 below to perform circumferential welding operations. This allows the equipment to process welding workpieces in different situations, improving the practicality of the equipment.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A control system for automatic welding of a ring-shaped weld by carbon dioxide gas shielded welding, comprising a machine body (1), characterized in that: A welding table (3) is fixedly connected to one side of the upper surface of the machine body (1). The welding table (3) is provided with a drive component (4) and a welding module (5). The upper surface of the machine body (1) has a transverse fixing surface (10) for placing the welding component flat. The transverse fixing surface (10) is located at the bottom of the welding module (5). The upper surface of the machine body (1) is also provided with two transverse welding surface fixing modules (6). The machine body (1) is also provided with a longitudinal fixing groove (11) for placing the welding component vertically. The longitudinal fixing groove (11) is coaxially arranged with the transverse fixing surface (10). A steering guide rail (7) is fixedly connected to the inner wall of the longitudinal fixing groove (11). A longitudinal welding surface fixing module (8) is provided inside the steering guide rail (7). Two transverse welding surface fixing modules (6) are disposed at both ends of the transverse fixing surface (10) to fix the welded parts that are laid flat on the transverse fixing surface (10); The driving component (4) is connected to the welding module (5) and drives the welding module (5) to make a circular motion with the geometric center of the transverse fixed surface (10) as the center; An electric slide rail is installed inside the steering guide rail (7) to drive the longitudinal welding surface fixing module (8) to slide along the steering guide rail (7) and stop the welded part inside the longitudinal fixing groove (11); The longitudinal fixing groove (11) has a circular cross-section, and the diameter increases from top to bottom. The upper diameter of the longitudinal fixing groove (11) is smaller than the minimum side length of the transverse fixing surface (10). The bottom of the machine body (1) is fixedly connected with several table legs (2), and the steering guide rail (7) is L-shaped with rounded corners. The drive unit (4) consists of a motor (401), a first gear (402), and a second gear (403). The motor (401) is fixed on the upper surface of the welding table (3). The first gear (402) and the second gear (403) are both rotatably connected to the upper surface of the welding table (3). The first gear (402) and the second gear (403) are meshed with each other. The shaft between the second gear (403) and the welding table (3) extends to the bottom of the welding table (3) and is connected to a welding module (5). The welding module (5) includes a welding disk (501), which is fixedly connected to the shaft of the second gear (403). The welding disk (501) is fixedly connected to a spindle (502). The welding disk (501), the spindle (502), and the longitudinal fixing groove (11) are coaxially arranged. The bottom end of the shaft (502) is fixedly connected to a second electric slide rail (503). The guide shaft of the second electric slide rail (503) is fixedly connected to a rod, and the rod is fixedly connected to the gas shielded welding machine body (504). The top of the gas shielded welding machine body (504) has a gas input hole (505), which is connected to a gas storage tank (9). The gas storage tank (9) stores carbon dioxide inside. The longitudinal welding surface fixing module (8) includes a fixing plate (801), with connecting rods (802) fixedly connected to both sides of the fixing plate (801). The two ends of the connecting rods (802) are fixedly connected to the guide shaft of the electric slide rail inside the steering guide rail (7). A limiting ring (805) is provided on one side of the fixing plate (801), and a plurality of vacuum suction cups (806) are provided inside the limiting ring (805) for fixing the welded parts. The back of the limiting ring (805) is provided with a power supply (803) and a vacuum pump (804). The vacuum pump (804) provides power to the vacuum suction cup (806). The power supply (803) is electrically connected to the vacuum pump (804). The transverse welding surface fixing module (6) includes a first electric slide rail (601), which is fixed on the upper surface of the body (1). The guide shaft of the first electric slide rail (601) located on the same side is fixedly connected to the clamping plate (603) through a connector (602).

2. The method of welding of a carbon dioxide gas shielded ring weld automatic welding control system according to claim 1, characterized in that: For transverse welding, the following steps are included; S1: Place the welded part flat on the horizontal fixed surface (10), and then start the first electric slide rail (601) to drive the two opposing clamping plates (603) to move closer to each other to fix the welded part; S2: Then, drive the second electric slide rail (503) to control the distance between the gas shielded welding machine body (504) and the shaft (502), and control the welding torch in the gas shielded welding machine body (504) to move downward and contact the welding part; S3: Next, drive the motor (401) to make the first gear (402) rotate, and make the two meshing first gear (402) and second gear (403) rotate, driving the gas shielded welding machine body (504) below to perform circumferential welding operation.

3. The method of welding of a carbon dioxide gas-tungsten-arc ring weld automatic welding control system according to claim 1, characterized in that: For longitudinal welding, the following steps are included: S1: Place the welded part flat inside the steering guide rail (7), then align the tail of the welded part with the limiting ring (805), start the vacuum pump (804) to fix the welded part with the vacuum suction cup (806), and then slide the drive part along its guide rail direction through the steering guide rail (7). During the sliding process, the welded part changes from a flat state to a vertical state. S2: Then, drive the second electric slide rail (503) to control the distance between the gas shielded welding machine body (504) and the shaft (502), and control the welding torch in the gas shielded welding machine body (504) to move downward and contact the welding part; S3: Next, drive the motor (401) to make the first gear (402) rotate, and make the two meshing first gear (402) and second gear (403) rotate, driving the gas shielded welding machine body (504) below to perform circumferential welding operation.

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