Butt welding elbow machining equipment and process

Abstract

The invention relates to the technical field of elbow machining, and provides butt welding elbow machining equipment and a process, the butt welding elbow machining equipment is used for welding a splicing gap of two semicircular elbows to form an elbow, the butt welding elbow machining equipment comprises a rack, guide rails and a welding unit, the two guide rails are both in swing connection with the rack, the guide rails are in an arc shape, and the welding unit is connected with the rack; the welding units are arranged on the guide rails in a sliding mode, the two sets of guide rails can swing oppositely so as to enter from the two ends of the elbow and swing to be connected, so that the welding units move along the two sets of guide rails in sequence, and splicing gaps of the inner arc and / or the outer arc of the elbow are welded. By means of the technical scheme, the advancing track is provided for the welding unit, the welding unit can move along the splicing gap, it is guaranteed that the welding path is matched with the splicing gap of the inner wall of the elbow, welding deviation caused by manual operation of a welding machine is avoided, and the problems that in the related technology, time and labor are wasted when the welding machine is manually operated to weld the elbow are solved. And the welding precision is not easy to guarantee.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of elbow processing, and in particular, to a butt-welding elbow processing device and process. Background Art

[0002] In the modern industrial field, pipeline systems are widely used in many industries such as petroleum, chemical, electric power, and construction, and undertake the important task of transporting various fluid media.

[0003] In the manufacturing of large butt-welded elbows, the currently commonly used process is to first stamp a fan-shaped raw material into a semicircular elbow, and then splice the two semicircular elbows to form a complete elbow prototype. During the splicing process, spot welding is usually performed at the splicing gap to achieve a preliminary connection. After that, the elbow is positioned and then the final welding process is carried out.

[0004] However, the existing traditional welding method requires the operator to enter the elbow and manually operate the welder by walking along the joint gap to complete the welding. This method is not only time-consuming and labor-intensive, increasing the worker's labor intensity, but also difficult to ensure welding accuracy due to the limited operating space inside the elbow and the inconvenience of movement. This can easily lead to unstable welding quality and affect the overall quality of the butt-welded elbow.

[0005] To address welding accuracy issues, some companies are using high-precision, fully automatic welding robots. While these robots can automate welding, significantly improving precision and efficiency, they are expensive to purchase and maintain. This makes them prohibitively expensive for many companies, especially small and medium-sized enterprises.

[0006] To sum up, how to develop a butt-weld elbow processing equipment and process that is easy to operate and has moderate cost while ensuring the welding quality of the butt-weld elbow has become an important technical problem that needs to be solved urgently in the current butt-weld elbow manufacturing field. Summary of the Invention

[0007] To overcome the above-mentioned defects, the embodiments of the present invention provide a butt-welding elbow processing device and process, which solves the technical problems in the related art of manually operating a welding machine to butt-weld elbows, which is time-consuming and labor-intensive and difficult to ensure welding accuracy.

[0008] According to one aspect, at least one embodiment of the present invention provides a butt-welding elbow processing device for welding the joint gap of two semicircular elbows to form an elbow, comprising a frame, a guide rail and a welding unit, wherein the frame is used to support the two semicircular elbows connected by spot welding, and the guide rails are provided with two groups, both of which are swingably connected to the frame, and the guide rails are arc-shaped, and the welding unit is slidably arranged on the guide rails. The two sets of guide rails are configured to swing toward each other to enter from both ends of the elbow and swing to connect, so that the welding unit moves along the two sets of guide rails in sequence and welds the splicing gaps of the inner arc and / or outer arc of the elbow.

[0009] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: The guide track includes an inner track and an outer track located on the outer circle of the inner track. The inner track corresponds to the splicing gap of the inner arc of the elbow, and the outer track corresponds to the splicing gap of the outer arc of the elbow.

[0010] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: The outer ends of the inner track and the outer track are connected by a semicircular connecting track, and the connecting track is located on the side opposite to the two guide tracks; The two sets of guide rails are configured to enter and connect from both ends of the elbow to form a closed circulating rail, so that the welding unit can slide along the circulating rail to continuously weld the splicing gaps between the inner arc and the outer arc of the elbow.

[0011] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: A gear is rotatably provided on the welding unit, and a rack is provided on the circulating track along its own extension direction. The gear can engage with the rack to drive the welding unit to slide along the circulating track. A guide groove is provided on the circulating track along its own extension direction. A guide roller is rotatably provided on the welding unit. The guide roller is located in the guide groove and rollingly cooperates with the guide groove.

[0012] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: The guide rail is provided with a support plate, which is multiple and spaced apart along the extension direction of the guide rail. The support plate has an adjustment groove perpendicular to the extension direction of the guide rail. A support shaft is bolted in the adjustment groove, and a support wheel is rotatably provided on the support shaft. The support wheel can enter the elbow and abut against the inner wall of the elbow under the swing of the guide rail. The position of the support shaft in the adjustment slot can be adjusted to adjust the degree to which the support wheel presses against the inner wall of the elbow.

[0013] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: Two supporting frames are symmetrically arranged on the frame, and the supporting frames have supporting grooves for supporting the elbow. The frame is also provided with a lifting frame located between the two supporting frames, and an adjusting wheel is rotatably arranged on the lifting frame. The adjusting wheel can abut against the bottom of the peripheral wall of the elbow when driven by the upward movement of the lifting frame, and can drive the elbow to swing to adjust the placement angle of the elbow.

[0014] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: Adjacent ends of the two groups of guide rails are provided with plug-in fitting parts and slots in a one-to-one correspondence, and the two groups of guide rails are positioned and fitted by means of the plug-in parts and the slots.

[0015] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: Two groups of swing frames are symmetrically swingably arranged on the frame, and the two groups of guide rails are respectively arranged on the two groups of swing frames in a one-to-one correspondence. The rotation axis of the swing frame is configured to be concentric with the elbow.

[0016] For example, at least one embodiment of the present invention provides a butt welding elbow processing device, which further includes: The adjacent ends of the two groups of swing frames are both provided with positioning clamps, and the positioning clamps can clamp the two ends of the elbow under the drive of the swing frame to position the elbow.

[0017] For example, at least one embodiment of the present invention provides a butt-weld elbow processing process, using the butt-weld elbow processing equipment described above, including the following steps: S1 loading: Splice two semicircular elbows and spot weld the gap, hoist and transfer the elbows to the frame and position them; S2 insertion track: Two sets of guide tracks swing towards each other and insert into the elbow until they are connected, providing a moving route for the welding unit to fit the arc of the joint gap on the inner wall of the elbow; S3 welding: The welding unit slides in sequence along the two connected guide rails to continuously weld the joint gaps of the inner and outer arcs of the elbow.

[0018] The beneficial effects of the embodiments of the present invention are: In the present invention, when butt-welding an elbow, the two semicircular elbow halves are first spliced and spot-welded to achieve a preliminary connection. The assembled elbow is then placed in a suitable position on the frame. Two sets of guide rails are controlled to enter the interior of the elbow from both ends. The two sets of guide rails can be butted together inside the elbow, connecting the ends to each other, thereby forming a complete guide rail within the elbow that matches the curvature of the elbow joint gap. Next, the welding unit is activated and moves along the spliced guide rails to weld the joint gap on the inner wall of the elbow.

[0019] Because the guide rail provides a precise travel trajectory for the welding unit, the welding unit can move along the splicing gap, ensuring that the welding path coincides with the splicing gap on the inner wall of the elbow, avoiding welding deviations caused by limited operating space when manually operating the welding machine, improving welding accuracy and reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly describes the drawings required for describing the embodiments of the present invention. Obviously, the drawings described below are merely exemplary embodiments of the present invention. Those skilled in the art can, without inventive effort, derive other drawings based on the contents of the exemplary embodiments of the present invention and these drawings.

[0021] Figure 1 This is a schematic diagram of the appearance and structure of a butt-welding elbow processing equipment according to one embodiment of the present invention; Figure 2 for Figure 1 A schematic structural diagram of a circulating track in an embodiment of the present invention; Figure 3 for Figure 1 A schematic structural diagram of a butt-welding elbow processing device in an embodiment when no elbow is installed; Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 1 A schematic structural diagram of the guide rail in an embodiment of the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 for Figure 1 Schematic diagram of the structure of the slot in an embodiment of the present invention.

[0022] In the figure: 1. Frame, 201. Guide rail, 3. Welding unit, 2011. Inner rail, 2012. Outer rail, 202. Connecting rail, 2. Circular rail, 4. Gear, 5. Rack, 6. Guide chute, 7. Guide roller, 8. Support plate, 9. Adjustment slot, 10. Support shaft, 11. Support wheel, 12. Support frame, 13. Lifting frame, 14. Adjustment wheel, 15. Insert, 16. Slot, 17. Swing frame, 18. Positioning clamp. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention.

[0024] To simplify the drawings, only portions relevant to the invention are schematically depicted in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one component with the same structure or function is schematically depicted or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0025] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, 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, it should not be understood as a limitation on the present invention.

[0028] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0029] like Figures 1 to 7As shown, it shows a butt-welding elbow processing equipment in one embodiment of the present invention, which is used to weld the joint gap of two semicircular elbows, including a frame 1, a guide rail 201 and a welding unit 3. The frame 1 serves as the basic support structure of the entire processing equipment. The guide rail 201 is provided in two groups and is arc-shaped. Its curvature is the same as the curvature of the inner wall of the elbow to be welded, providing a travel track for the welding unit 3, so that the welding unit 3 can move along a path consistent with the elbow joint gap, ensuring the accuracy of welding. The two groups of guide rails 201 are movably arranged relative to the frame 1, and the welding unit 3 is slidably set on the guide rails 201. The welding unit 3 uses a conventional welding machine, and its welding head is facing the inner wall of the elbow.

[0030] When welding a butt elbow, first splice the two semicircular elbows together and spot weld them for a preliminary connection, then place the assembled elbow in a suitable position on the frame 1. Control the two sets of guide rails 201 to enter the interior of the elbow from both ends. The two sets of guide rails 201 can be docked inside the elbow so that the ends are connected to each other, thereby forming a complete guide rail 201 inside the elbow that matches the curvature of the elbow splicing gap. Next, start the welding unit 3, which moves along the already spliced guide rails 201 to weld the splicing gap on the inner wall of the elbow.

[0031] Since the guide rail 201 provides a precise travel trajectory for the welding unit 3, the welding unit 3 can move along the splicing gap, ensuring that the welding path is consistent with the splicing gap on the inner wall of the elbow, avoiding welding deviations caused by limited operating space when manually operating the welding machine, improving welding accuracy, and reducing the labor intensity of workers.

[0032] If the guide rail 201 is designed as an integrated structure, it can enter from one end of the elbow, but the entire structure will form a cantilever structure, and the end extending into the elbow will not be supported, resulting in poor structural strength. Therefore, this solution designs the guide rail 201 into two groups, one entering from each end of the elbow and connecting inside the elbow, making the overall structure stronger and able to bear the weight of the welding unit 3.

[0033] In some examples, such as Figure 2 As shown, the guide rails 201 consist of an inner rail 2011 and an outer rail 2012. The inner rails 2011 and outer rails 2012 correspond to the joint gaps of the inner and outer arcs of the elbow, respectively. Before welding the elbow, two sets of guide rails 201 enter the elbow from both ends. The inner rail 2011 moves along the inner arc of the elbow, while the outer rail 2012 moves along the outer arc of the elbow. This allows the inner rails 2011 and outer rails 2012 to reach the joint gaps of the inner and outer arcs of the elbow, respectively, and connect the ends inside the elbow.

[0034] Welding units 3 can be installed on both inner rail 2011 and outer rail 2012. The welding unit 3 on inner rail 2011 moves along the inner rail 2011 to weld the joint gap on the inner wall of the inner arc of the elbow. Simultaneously, the welding unit 3 on outer rail 2012 moves along the outer rail 2012 to weld the joint gap on the inner wall of the outer arc of the elbow. Because the curvature of inner rail 2011 and outer rail 2012 matches the curvature of the corresponding joint gaps, the welding unit 3 can weld along a precise trajectory, ensuring the quality of the welding of the inner and outer arcs.

[0035] By providing inner rails 2011 and outer rails 2012 corresponding to the joint gaps between the inner and outer arcs of the elbow, respectively, high-quality welding is ensured at the joints of the inner and outer arcs of the elbow, thereby improving the overall quality of the butt-welded elbow. Furthermore, the inner and outer rails 2011 and 2012 operate simultaneously, allowing the two welding units 3 to simultaneously weld the joint gaps between the inner and outer arcs of the elbow. This saves welding time and improves welding efficiency compared to the traditional method of welding the inner or outer arc first and then welding the other side.

[0036] In some examples, such as Figure 2 As shown, the connecting track 202 is semicircular and serves to connect the outer ends of the inner track 2011 and the outer track 2012. The two sets of guide tracks 201 connected by the connecting track 202 can enter the interior of the elbow from both ends, and connect their ends inside the elbow, thereby forming a closed loop track 2. Specifically, the two inner tracks 2011 of the two sets of guide tracks 201 are connected to each other, and the two outer tracks 2012 are connected to each other.

[0037] Before welding, the two semicircular elbows are spliced and spot-welded to be initially fixed, and then the two sets of guide rails 201 enter the interior of the elbow from both ends of the elbow respectively, and realize end docking inside the elbow. After the two sets of guide rails 201 are connected to form a closed circular track 2, the welding unit 3 moves in a loop along the circular track 2. For example, the welding unit 3 can first weld the splicing gap of the inner wall of the inner arc of the elbow along the inner track 2011. After the welding unit 3 moves to the end of the inner track 2011, it can enter the outer track 2012 through the connecting track 202 and weld the splicing gap of the inner wall of the outer arc of the elbow, thereby realizing continuous welding of the splicing gap between the inner wall of the inner arc and the inner wall of the outer arc of the elbow.

[0038] The design of the closed loop track 2 enables the welding unit 3 to move continuously on the joint gap between the inner arc and the inner wall of the outer arc of the elbow, without the need to pause or reposition between the inner and outer arc welding, thereby improving the welding efficiency and avoiding the problem of welding parameter fluctuations caused by starting, stopping or repositioning, thereby improving the welding quality of the butt-welded elbow.

[0039] In some examples, such as Figure 5 、 6 As shown, a gear 4 is rotatably mounted on the welding unit 3, and a rack 5 is provided along the extending direction of the circulating track 2, with the gear 4 and the rack 5 being in meshing state. A guide roller 7 is rotatably mounted on the welding unit 3, and a guide chute 6 is provided along the extending direction of the circulating track 2. The guide roller 7 is located in the guide chute 6 and can roll in the guide chute 6 to provide guidance for the movement of the welding unit 3.

[0040] When the butt-welding elbow processing equipment starts the welding operation, the motor installed on the welding unit 3 starts to run, and the motor drives the gear 4 connected to it to rotate. Since the gear 4 is engaged with the rack 5, the welding unit 3 moves along the circulating track 2, providing the welding unit 3 with travel power, thereby realizing the welding of the splicing gap between the inner wall of the inner arc and the inner wall of the outer arc of the elbow. At the same time, the guide roller 7 on the welding unit 3 is located in the guide chute 6 of the circulating track 2. During the movement of the welding unit 3, the guide roller 7 rolls along the guide chute 6. The restraining effect of the guide chute 6 on the guide roller 7 ensures that the welding unit 3 will not deviate or shake during the movement, thereby ensuring the stability of the movement of the welding unit 3.

[0041] In some examples, such as Figure 2 As shown, a plurality of support plates 8 are provided on the guide rail 201, evenly distributed along the extension direction of the guide rail 201. Each support plate 8 is machined with a strip-shaped adjustment slot 9. A support shaft 10 is bolted into the adjustment slot 9 via a nut. A support wheel 11 is rotatably provided on the support shaft 10. Specifically, the support shaft 10 has a shoulder and a threaded end. During installation, the threaded end is inserted into the adjustment slot 9 until the shoulder abuts the support plate 8. Then, a nut is threaded onto the threaded end. The nut and shoulder jointly clamp the support plate 8, thereby locking the support shaft 10.

[0042] During welding, first adjust the position of the support wheel 11, loosen the nut connected to the support shaft 10, and move the support shaft 10 to a suitable position in the adjustment groove 9 so that the support wheel 11 can provide a suitable clamping force when it abuts the inner wall of the elbow. Then tighten the nut to fix the support shaft 10 in the current position in the adjustment groove 9. When the guide rail 201 enters the elbow, the support wheel 11 contacts the inner wall of the elbow and rolls along the inner wall of the elbow. After the guide rail 201 moves into place, the support wheel 11 tightly abuts the inner wall of the elbow, providing additional support for the guide rail 201, thereby ensuring the relative stability between the welding unit 3 and the elbow during movement.

[0043] In some examples, such as Figure 3As shown, a pair of support frames 12 are mounted on the frame 1. Each support frame 12 is designed with a V-shaped support groove for supporting the elbow. A lifting frame 13 is also mounted on the frame 1, located between the two support frames 12. A rubber adjustment wheel 14 is rotatably mounted on the lifting frame 13. The adjustment wheel 14 can abut the elbow when the lifting frame 13 is raised and, when rotating, drives the elbow to adjust its placement angle within the support groove of the support frame 12.

[0044] During the processing, the elbow that has been spliced and spot-welded and initially fixed is first placed on the supporting groove of the support frame 12. Then the lifting frame 13 is raised, and the adjusting wheel 14 gradually approaches the elbow and finally abuts the surface of the elbow. After the adjusting wheel 14 abuts the elbow, the motor installed on the lifting frame 13 drives the adjusting wheel 14 to rotate. With the help of the friction between the adjusting wheel 14 and the surface of the elbow, the elbow is driven to swing in the supporting groove until the elbow is in a vertical plane, so that the splicing gap is parallel to the guide rail 201, and then the lifting frame 13 is lowered and reset. The placement angle of the elbow is adjusted by the adjusting wheel 14 so that the splicing gap of the elbow is parallel to the guide rail 201, ensuring that the relative position and angle between the welding gun and the splicing gap of the welding unit 3 remain stable during the welding process, thereby ensuring welding accuracy.

[0045] In some examples, such as Figure 6 、 7 As shown, the ends of the two sets of guide rails 201 are designed with plug-in sections 15 and slots 16, respectively, that can be plugged into each other. Two sets of swing frames 17 are symmetrically mounted on the frame 1. The rotation axes of the swing frames 17 are concentric with the elbow, ensuring that the guide rails 201 can move along the elbow's circumference. Positioning clips 18 are mounted on the swing frames 17 and are made of rubber.

[0046] During welding, the elbow is first placed on the support frame 12. The swing frame 17 then drives the guide rails 201 toward the ends of the elbow. During this movement, because the swing frame 17's axis of rotation is concentric with the elbow, the guide rails 201 can move along the elbow's circumference. Once the guide rails 201 enter the elbow, the inserts 15 at their ends align with the slots 16 at the ends of the other set of guide rails 201 and engage with each other, connecting the two sets of guide rails 201. Simultaneously, the two sets of swing frames 17 each drive two sets of positioning clamps 18 to clamp the ends of the elbow, further ensuring its stability.

[0047] The plug-in fit between the insert 15 and the slot 16 enhances the stability of the connected guide rails 201. The pivoting frame 17, with its axis of rotation concentric with the elbow, allows the guide rails 201 to move along the elbow's circumference, ensuring a consistent fit between the guide rails 201 and the elbow's inner wall. Driven by the pivoting frame 17, the positioning clamp 18 clamps the elbow's end wall, providing additional positioning.

[0048] In some examples, a butt-weld elbow processing process, using a butt-weld elbow processing device, includes the following steps: S1 loading: Splice two semicircular elbows and spot weld the gap, hoist and transfer the elbows to the frame and position them; S2 insertion track: Two sets of guide tracks swing towards each other and insert into the elbow until they are connected, providing a moving route for the welding unit to fit the arc of the joint gap on the inner wall of the elbow; S3 welding: The welding unit slides in sequence along the two connected guide rails to continuously weld the joint gaps of the inner and outer arcs of the elbow.

[0049] In this embodiment, by combining two sets of guide rails 201 to form a circulating track 2, the welding unit 3 can continuously move and weld along the joint gap between the inner wall of the inner arc and the inner wall of the outer arc of the elbow, eliminating the need for pausing or repositioning between welding the inner and outer arcs, thereby improving welding efficiency. Automated welding using butt-welding elbow processing equipment improves welding accuracy, eliminating the need for operators to manually operate the welder inside the elbow, and reducing labor intensity.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A butt-welding elbow processing equipment, used for welding the joint gap of two semicircular elbows to form an elbow, characterized in that: The invention comprises a frame (1), a guide rail (201) and a welding unit (3), wherein the frame (1) is used to support two semicircular elbows connected by spot welding, the guide rail (201) is provided with two groups, both groups of the guide rails (201) are swingably connected to the frame (1), the guide rail (201) is arc-shaped, and the welding unit (3) is slidably arranged on the guide rail (201). The two sets of guide rails (201) are configured to be able to swing towards each other so as to enter from both ends of the elbow and swing to meet each other, so that the welding unit (3) moves along the two sets of guide rails (201) in sequence and welds the joint gaps of the inner arc and / or outer arc of the elbow.

2. The butt welding elbow processing equipment according to claim 1, characterized in that: The guide track (201) comprises an inner track (2011) and an outer track (2012) located on the outer ring of the inner track (2011), the inner track (2011) corresponds to the splicing gap of the inner arc of the elbow, and the outer track (2012) corresponds to the splicing gap of the outer arc of the elbow.

3. The butt welding elbow processing equipment according to claim 2, characterized in that: The outer ends of the inner track (2011) and the outer track (2012) are connected via a semicircular connecting track (202), and the connecting track (202) is located on the opposite side of the two guide tracks (201); The two sets of guide rails (201) are configured to be able to enter from both ends of the elbow and connect to form a closed circulating rail (2), so that the welding unit (3) can slide along the circulating rail (2) to continuously weld the splicing gap between the inner arc and the outer arc of the elbow.

4. The butt welding elbow processing equipment according to claim 3, characterized in that: A gear (4) is rotatably provided on the welding unit (3), a rack (5) is provided on the circulating track (2) along its own extension direction, the gear (4) can mesh with the rack (5) to drive the welding unit (3) to slide along the circulating track (2), a guide groove (6) is provided on the circulating track (2) along its own extension direction, a guide roller (7) is rotatably provided on the welding unit (3), the guide roller (7) is located in the guide groove (6) and is in rolling engagement with the guide groove (6).

5. The butt welding elbow processing equipment according to claim 1, characterized in that: The guide rail (201) is provided with a support plate (8), the support plates (8) are multiple and are spaced apart along the extension direction of the guide rail (201), the support plate (8) has an adjustment groove (9) arranged perpendicular to the extension direction of the guide rail (201), a support shaft (10) is bolted in the adjustment groove (9), and a support wheel (11) is rotatably provided on the support shaft (10). The support wheel (11) can enter the elbow and abut against the inner wall of the elbow under the swinging drive of the guide rail (201). The support shaft (10) can adjust its position in the adjustment slot (9) to adjust the degree to which the support wheel (11) abuts against the inner wall of the elbow.

6. The butt welding elbow processing equipment according to claim 1, characterized in that: Two support frames (12) are symmetrically arranged on the frame (1), and the support frames (12) have support grooves for supporting the elbow. The frame (1) is also provided with a lifting frame (13) located between the two support frames (12). An adjusting wheel (14) is rotatably arranged on the lifting frame (13). The adjusting wheel (14) can abut against the lower side wall of the elbow when the lifting frame (13) moves upward, and can drive the elbow to swing to adjust the placement angle of the elbow.

7. The butt welding elbow processing equipment according to claim 1, characterized in that: Adjacent ends of the two groups of guide rails (201) are provided with plug-in fitting portions (15) and slots (16) in a one-to-one correspondence, and the two groups of guide rails (201) are positioned and fitted by means of the plug-in portions (15) and the slots (16).

8. The butt welding elbow processing equipment according to claim 1, characterized in that: Two groups of swing frames (17) are symmetrically swingably arranged on the frame (1), and the two groups of guide rails (201) are respectively arranged on the two groups of swing frames (17) in a one-to-one correspondence. The rotation axis of the swing frame (17) is configured to be concentric with the elbow.

9. The butt welding elbow processing equipment according to claim 8, characterized in that: Adjacent ends of the two groups of swing frames (17) are both provided with positioning clamps (18), and the positioning clamps (18) can clamp the two ends of the elbow under the drive of the swing frames (17) to position the elbow.

10. A butt-weld elbow processing process, using a butt-weld elbow processing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1 Loading: Splice the two semicircular elbows and spot weld the joint gap, hoist the transfer elbow to the frame (1) and position it; S2 inserts the track: two sets of guide tracks (201) swing towards each other and insert into the elbow until they meet, providing a moving route for the welding unit (3) to fit the arc of the splicing gap on the inner wall of the elbow; S3 welding: the welding unit (3) slides in sequence along the two connected sets of guide rails (201) to continuously weld the joint gaps of the inner arc and the outer arc of the elbow.

Images