A welding machine

Abstract

The utility model provides a welding machine, including a base, a protective cover, a feed port, a material taking port, a welding device, a loading device and a welding table, wherein the welding table includes: two groups of guide rollers, a connecting frame, a driving device and a weld adjustment device, the connecting frame is hingedly connected to the two groups of guide rollers, the guide rollers include: a first guide roller and a second guide roller, the first guide roller and the second guide roller are placed in parallel, the driving device is connected to the guide rollers, and the weld adjustment device passes through the connecting frame and is used to adjust the weld gap. The utility model overcomes the shortcomings of the prior art, by setting the two groups of guide rollers to rotate under the action of the driving device, thereby driving the tube-shaped workpiece supported by the guide rollers to rotate, the welding device can realize the welding of the tube-shaped workpiece without moving, can realize a continuous and efficient welding process, and significantly improve the welding efficiency of the tube-shaped workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding machine. Background Art

[0002] With the continuous development of society, the demand for steel pipes is also constantly increasing. Due to the limitation of the site during the production process, the steel pipes need to be divided, and then the two steel pipes need to be butt-jointed during transportation and use. The most commonly used method for butt-jointing steel pipes is welding. Welding can make the steel pipes more stable and firm, and ensure the sealing type. However, the sizes of steel pipes are different, and manual welding is more troublesome and inconvenient to fix. Therefore, it is necessary to position and weld steel pipes of different sizes to improve efficiency.

[0003] During the butt-joining process, steel pipes are usually welded manually. During the welding process, the two steel pipes are prone to deviation and rotation when they are butt-jointed, making welding more difficult. In addition, the sizes of steel pipes vary according to different construction requirements. When welding steel pipes with too large diameters, workers are more troublesome and need to change welding angles and positions at different times. This not only reduces efficiency but also increases the labor intensity of workers.

[0004] Chinese Patent: CN219443935U discloses a welding machine comprising a fixed table, a fixed box fixedly mounted on the top of the protective box, a fixed plate fixedly connected to the interior of the fixed box, a lifting rod fixedly connected to the bottom of the fixed plate, one end of the lifting rod fixedly connected to a connecting plate, a welding device fixedly connected to the bottom of the connecting plate, a support plate fixedly connected to the interior of the protective box, an adjustment rod fixedly connected to one side of the support plate, one end of the adjustment rod fixedly connected to a fixed bracket, a telescopic device fixedly mounted on the interior of the fixed bracket, a locking device fixedly connected to the bottom of the telescopic device, and a welding table fixedly mounted on the interior of the protective box. However, due to the fixation of the locking device during operation, the tubular workpiece cannot be rotated and must be rotated manually or after pausing welding, resulting in discontinuous welding, poor weld quality, and the easy generation of scrap. At the same time, the weld gap is difficult to adjust, and the workpiece is prone to deformation, which cannot meet the needs of tubular workpieces. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the utility model provides a welding machine, which overcomes the shortcomings of the existing technology and aims to solve the problem that the existing welding machine cannot continuously process the circular weld.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a welding machine, comprising a base, a protective cover, a feed port, a feeding port, a welding device, a loading device and a welding table, wherein the protective cover is arranged on the base, the feed port is arranged at two end faces of the protective cover along the long axis direction, the feeding port is arranged on the front side of the protective cover, the welding device is connected to the top inner side of the protective cover, and the loading device is arranged above the feed port of the protective cover, and is characterized in that the welding table comprises: two groups of guide rollers, a connecting frame, a driving device and a weld adjustment device, the connecting frame is fixedly connected to the two groups of guide rollers, the guide rollers comprise: a first guide roller and a second guide roller, the first guide roller and the second guide roller are placed in parallel, the driving device is connected to the guide roller, and the weld adjustment device passes through the connecting frame for adjusting the weld gap.

[0007] During work, according to the size and type of the tubular workpiece, the lateral distance between the first guide roller and the second guide roller is adjusted, the connecting frame is sleeved on the weld adjustment device, the connecting frame is fixed on the guide roller, and then the two tubular workpieces are manually placed into the two feed ports, the loading device inside the protective cover moves down to grab the tubular workpiece, and then sends it to the guide roller of the welding table, the loading device releases the tubular workpiece, and the two workpieces are tightly attached to both sides of the weld adjustment device, the welding device moves down to the weld, first positions the spot welding, and starts welding after completing the positioning spot welding, the weld adjustment device is reset, and at the same time the driving device drives the guide roller to rotate, and the rotation of the guide roller drives the tubular workpiece to rotate, the welding device keeps the welding position unchanged, and the tubular workpiece rotates to realize continuous welding of the annular weld. After completing the welding of a circular circle of the tubular workpiece, the welding device moves up and leaves the workpiece. After the weld cools down, the feeding port is manually opened to take out the tubular workpiece to complete the welding work.

[0008] As an optimal technical solution of the present invention, the guide roller also includes: a guide roller support and a fixed cover, eight guide roller columns are arranged on the top surface of the guide roller support, the bottom of the guide roller column is screwed to the first sliding groove of the guide roller support, and a semicircular groove is arranged on the top surface of the guide roller column, and the semicircular groove is respectively connected to the end of the first guide roller and the second guide roller, and the fixed cover is fixedly arranged above the semicircular groove, and the fixed cover is screwed to the guide roller column.

[0009] As a preferred technical solution of the present invention, the connecting frame is I-shaped, a second sliding groove is provided in the middle of the web of the connecting frame, and through holes are provided at the four corners of the two flange surfaces of the connecting frame.

[0010] As a preferred technical solution of the present invention, the through holes of the connecting frame are respectively connected to the guide roller columns adjacent to the two groups of guide rollers by screws.

[0011] As an optimal technical solution of the present invention, the weld adjustment device includes: an electric cylinder, an adjustment plate and a fixing clamp. The electric cylinder is vertically fixed in the guide roller support, and the adjustment plate at the end of the electric cylinder is connected to the fixing clamp.

[0012] As a preferred technical solution of the present invention, the adjusting piece is connected to the threaded hole of the second sliding groove through threads and the fixing clamp.

[0013] As a preferred technical solution of the present invention, the driving device includes a motor and a transmission device, the motor is a servo motor, the motor is connected to the transmission device, and the transmission device is respectively connected to the first guide roller and the second guide roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] The utility model provides two sets of guide rollers that can rotate under the action of a driving device, thereby driving the tubular workpiece supported by the guide rollers to rotate. The welding device can realize the welding of the tubular workpiece without moving, and can realize continuous and efficient welding, significantly improving the welding efficiency of the tubular workpiece. The welding process is more precise and stable, better ensuring the quality of the weld, reducing the occurrence of welding defects, improving the product qualification rate, reducing manual intervention, improving the stability and reliability of production, helping to expand the application range of equipment welding products, and further reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the utility model;

[0018] Figure 3 This is a schematic structural diagram of a welding table according to the present invention;

[0019] Figure 4 This is a top view of the welding table and guide rollers of the present invention;

[0020] Figure 5 This is a schematic diagram of the connecting frame structure of the present utility model;

[0021] Figure 6 This is a schematic diagram of the guide roller structure of the present utility model.

[0022] In the figure: 1. Base; 2. Protective cover; 3. Feed port; 4. Feed port; 5. Welding device; 6. Loading device; 7. Welding table; 8. Guide roller; 801. First guide roller; 802. Second guide roller; 803. Guide roller support; 8031. Guide roller column; 8032. Semicircular groove; 8033. First slide; 804. Fixed cover; 9. Connecting frame; 901. Second slide; 902. Through hole; 10. Driving device; 1001. Motor; 1002. Transmission device; 11. Welding seam adjustment device; 1101. Electric cylinder; 1102. Adjustment plate; 1103. Fixing clamp. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1-6 The utility model provides the following technical solutions: a welding machine, comprising: a base 1, a protective cover 2, a feed port 3, a feeding port 4, a welding device 5, a loading device 6 and a welding table 7, the protective cover 2 is arranged on the base 1, the feed port 3 is arranged at two end faces of the protective cover 2 along the long axis direction, the feeding port 4 is arranged on the front side of the protective cover 2, the welding device 5 is connected to the top inner side of the protective cover 2, and the loading device 6 is arranged above the feed port 3 of the protective cover 2; the welding table 7 comprises: two groups of guide rollers 8, a connecting frame 9, a driving device 10 and a weld adjustment device 11, the connecting frame 9 is fixedly connected to the two groups of guide rollers 8, the guide roller 8 comprises: a first guide roller 801 and a second guide roller 802, the first guide roller 801 and the second guide roller 802 are placed parallel, the driving device 10 is connected to the guide roller 8, and the weld adjustment device 11 passes through the connecting frame 9 for adjusting the weld gap.

[0025] During operation, according to the size and type of the tubular workpiece, the lateral distance between the first guide roller 801 and the second guide roller 802 is adjusted, the connecting frame 9 is sleeved with the weld adjustment device 11, the connecting frame 9 is fixed on the guide roller 8, and then the two tubular workpieces are manually placed into the two feeding ports 3, the loading device 6 inside the protective cover 2 moves down to grab the tubular workpiece, and then sends it to the guide roller 8 of the welding table 7, the loading device 6 releases the tubular workpiece, the two workpieces are close to both sides of the weld adjustment device 11, the welding device 5 moves down to the weld, first locates the spot welding, and starts welding after completing the positioning spot welding, the weld adjustment device 11 is reset, and at the same time the driving device 10 drives the guide roller 8 to rotate, and the guide roller 8 rotates to drive the tubular workpiece to rotate, the welding device 5 maintains the welding position unchanged, and the tubular workpiece rotates to realize continuous welding of the annular weld. After completing the welding of the tubular workpiece for a circle, the welding device 5 moves up and leaves the workpiece. After the weld cools down, the feeding port 4 is manually opened to take out the tubular workpiece to complete the welding work.

[0026] The welding table 7 is arranged in this way so that the two sets of guide rollers 8 can rotate under the action of the driving device 10, thereby driving the tubular workpiece supported by the guide rollers 8 to rotate. The welding device 5 can achieve welding of the tubular workpiece without moving, which can achieve a continuous and efficient welding process, significantly improve the welding efficiency of the tubular workpiece, make the welding process more precise and stable, better ensure the quality of the weld, reduce the occurrence of welding defects, improve the product qualification rate, reduce manual intervention, improve the stability and reliability of production, help expand the application range of equipment welding products, and further reduce production costs.

[0027] Specifically, the guide roller 8 also includes: a guide roller support 803 and a fixed cover 804. Eight guide roller columns 8031 ​​are arranged on the top surface of the guide roller support 803. The bottom of the guide roller column 8031 ​​is screwed to the first slide groove 8033 of the guide roller support 803. A semicircular groove 8032 is arranged on the top surface of the guide roller column 8031. The semicircular groove 8032 is respectively connected to the end of the first guide roller 801 and the second guide roller 802. The fixed cover 804 is fixed above the semicircular groove 8032. The fixed cover 804 is screwed to the guide roller column 8031. The guide roller 8 is arranged in this way so that the first guide roller 801 and the second guide roller 802 can move following the guide roller column 8031, which is used to adjust the lateral distance between the first guide roller 801 and the second guide roller 802 to adapt to the processing of tubular products of different sizes, better fix the tubular workpiece, and avoid the phenomenon of unstable rotation caused by the center of the workpiece being too high due to a small gap. This helps to improve the stability of the rotation of the tubular workpiece, ensure welding quality, reduce the generation of waste, and significantly reduce production costs.

[0028] Specifically, the connecting frame 9 is I-shaped, with a second chute 901 provided in the middle of the web of the connecting frame 9, and through holes 902 provided at the four corners of the two flange surfaces of the connecting frame 9. This configuration of the connecting frame 9 is relatively simple in structure, with the second chute 901 connected to the weld adjustment device 11, and the through holes 902 connected to the guide roller posts 8031, enabling adjustment of the angle between the two sets of guide rollers 8. The overall structure is highly rigid, has fewer parts, and is lightweight, helping to reduce the overall weight of the device, improve the stability and reliability of the device, and significantly reduce the production cost of the device.

[0029] Specifically, the through holes 902 of the connecting frame 9 are screwed to the adjacent guide roller posts 8031 ​​of the two sets of guide rollers 8. This connection method of the connecting frame 9 and the guide roller posts 8031 ​​can fix the connecting frame 9 while limiting the relative movement of the four guide roller posts 8031, thereby preventing large changes in the weld during processing.

[0030] Specifically, the weld adjustment device 11 includes an electric cylinder 1101, an adjustment plate 1102, and a fixing clamp 1103. The electric cylinder 1101 is vertically fixed within the guide roller support 803. The fixing clamp 1103 is connected to the end of the electric cylinder 1101, and the fixing clamp 1103 is fixedly connected to the adjustment plate 1102. This configuration of the weld adjustment device 11 allows the adjustment plate 1102 to move, which is used to adjust the weld distance between the workpieces, reduce welding deformation, and help improve welding quality.

[0031] Specifically, the adjustment piece 1102 is connected to the second chute 901 with a clearance fit. This arrangement simplifies the connection structure between the adjustment piece 1102 and the second chute 901, adapts to the push of the electric cylinder 1101, reduces the requirements for part processing accuracy, facilitates installation and use, and improves the connection stability and reliability of the device.

[0032] Specifically, the drive device 10 includes a motor 1001 and a transmission device 1002. The motor 1001 is a servo motor, which is connected to the transmission device 1002. The transmission device 1002 is connected to the first guide roller 801 and the second guide roller 802. This configuration of the drive device 10 enables precise adjustment of the drive rotation, facilitating adjustment of the speed according to time requirements, thereby improving workpiece welding quality, reducing scrap rates, and lowering production costs.

[0033] Specifically, the control system is connected to motor 1001 and electric cylinder 1101, respectively, to adjust the rotational speed and angle. This control system configuration allows for unified adjustment of various device parameters, reduces control system redundancy, facilitates on-site operation and determination of process parameters, improves the device's automation level, reduces coordination difficulties on the production site, and ensures consistent and stable product quality.

[0034] Working principle: During operation, according to the size and type of the tubular workpiece, the lateral distance between the first guide roller 801 and the second guide roller 802 is adjusted, the connecting frame 9 is sleeved with the weld adjustment device 11, the connecting frame 9 is fixed on the guide roller 8, and then the two tubular workpieces are manually placed into the two feeding ports 3, the loading device 6 inside the protective cover 2 moves down to grab the tubular workpiece, and then sends it to the guide roller 8 of the welding table 7, the loading device 6 releases the tubular workpiece, and the two workpieces are close to both sides of the weld adjustment device 11, the welding device 5 moves down to the weld, first locates the spot welding, and starts welding after completing the positioning spot welding, the weld adjustment device 11 is reset, and at the same time the driving device 10 drives the guide roller 8 to rotate, and the guide roller 8 rotates to drive the tubular workpiece to rotate, the welding device 5 maintains the welding position unchanged, and the tubular workpiece rotates to realize continuous welding of the annular weld. After completing the welding of a circular circle of the tubular workpiece, the welding device 5 moves up and leaves the workpiece. After the weld cools down, the feeding port 4 is manually opened to take out the tubular workpiece to complete the welding work.

[0035] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present invention.

[0036] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A welding machine, comprising a base (1), a protective cover (2), a feed port (3), a material extraction port (4), a welding device (5), a loading device (6) and a welding table (7), wherein the protective cover (2) is arranged on the base (1), the feed port (3) is arranged on two end surfaces of the protective cover (2) along the long axis direction, the material extraction port (4) is arranged on the front side of the protective cover (2), the welding device (5) is connected to the top of the inner side of the protective cover (2), and the loading device (6) is arranged above the feed port (3) of the protective cover (2), characterized in that: The welding table (7) comprises: two groups of guide rollers (8), a connecting frame (9), a driving device (10) and a weld seam adjustment device (11); the connecting frame (9) is fixedly connected to the two groups of guide rollers (8); the guide rollers (8) comprise: a first guide roller (801) and a second guide roller (802); the first guide roller (801) and the second guide roller (802) are placed in parallel; the driving device (10) is connected to the guide rollers (8); and the weld seam adjustment device (11) passes through the connecting frame (9).

2. A welding machine according to claim 1, characterized in that: The guide roller (8) further comprises: a guide roller support (803) and a fixed cover (804); eight guide roller columns (8031) are arranged on the top surface of the guide roller support (803); the bottom of the guide roller column (8031) is screw-connected to the first slide groove (8033) of the guide roller support (803); a semicircular groove (8032) is arranged on the top surface of the guide roller column (8031); the semicircular groove (8032) is respectively connected to the end of the first guide roller (801) and the end of the second guide roller (802); the fixed cover (804) is fixedly arranged above the semicircular groove (8032); and the fixed cover (804) is screw-connected to the guide roller column (8031).

3. A welding machine according to claim 2, characterized in that: The connecting frame (9) is in an I-shape, a second slide groove (901) is provided in the middle of the web of the connecting frame (9), and through holes (902) are provided at four corners of two flange surfaces of the connecting frame (9).

4. A welding machine according to claim 3, characterized in that: The through holes (902) of the connecting frame (9) are respectively screw-connected to the adjacent guide roller columns (8031) of the two groups of guide rollers (8).

5. A welding machine according to claim 3, characterized in that: The weld adjustment device (11) comprises: an electric cylinder (1101), an adjustment plate (1102) and a fixing clamp (1103); the electric cylinder (1101) is vertically fixedly installed in the guide roller support (803); the end of the electric cylinder (1101) is connected to the fixing clamp (1103); and the fixing clamp (1103) is fixedly connected to the adjustment plate (1102).

6. A welding machine according to claim 5, characterized in that: The adjustment sheet (1102) is connected to the second sliding groove (901) with a clearance fit.

7. A welding machine according to claim 2, characterized in that: The driving device (10) comprises a motor (1001) and a transmission device (1002); the motor (1001) is a servo motor; the motor (1001) is connected to the transmission device (1002); and the transmission device (1002) is respectively connected to the first guide roller (801) and the second guide roller (802).

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