A device for welding metal parts

Abstract

The application discloses a kind of device for metal parts welding processing in the technical field of metal parts processing, including base, welding mechanism, two rotating feeding mechanisms, two pipe inner end limiting mechanisms and two pipe outer end limiting mechanisms, and pipe inner end limiting mechanism includes lower support part and upper limiting part, pipe outer end limiting mechanism includes pipe bottom lifting part and pipe end limiting part, rotating drive assembly is arranged between the inner side end of two rotating feeding mechanisms;The application realizes the synchronous feeding of two pipes by two rotating feeding mechanisms, and is conveyed to the upper of base by rotating, and then the position of pipe is adjusted, supported and limited by pipe outer end limiting mechanism and pipe inner end limiting mechanism, and it is separated from rotating discharging mechanism, wherein, pipe bottom lifting part drives pipe rotating, and welding mechanism completes continuous welding of annular weld;The device realizes rapid feeding, accurate alignment, stable clamping and continuous rotary welding, improves welding efficiency and quality.

Description

Technical Field

[0001] This invention relates to the field of metal parts processing technology, specifically to an apparatus for welding metal parts. Background Technology

[0002] In the welding of metal pipe fittings, butt welding is a common connection method, especially suitable for pipe fittings that require the formation of a circumferential weld. When welding pipe fittings, it is usually necessary to limit the pipe fittings and make the welding structure and the pipe fittings rotatable relative to each other in order to perform circumferential welding operations.

[0003] A device for welding metal tubular parts, with patent publication number CN115958374A, mainly includes an installation mechanism and two sets of bottom components on the installation mechanism. During processing, the tubular parts are placed into the bottom components on both sides. The installation mechanism includes a main body, a gear ring, and an adjusting gear. The welding device is connected to the inside of the gear ring through a telescopic component, so that the welding device can be driven to rotate relative to the tubular parts by adjusting the gear and the gear ring to complete the annular welding operation of the tubular parts.

[0004] However, when the above-mentioned device is in operation, the length increases when the two pipes are welded into a whole pipe. The middle part of the pipe is restricted by structures such as toothed rings, which makes the pipe cutting operation inconvenient and thus affects the overall efficiency of the welding operation.

[0005] Based on this, the present invention designs an apparatus for welding metal parts to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide an apparatus for welding metal parts, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: An apparatus for welding metal parts includes a base and a welding mechanism mounted on the top center of the base. A horizontal support platform is provided in the middle of the rear side of the base, and a mounting bracket is provided in the middle of the top of the base; The welding mechanism includes a welding worktable and a welding assembly. The welding worktable is designed as a transverse U-shape, with the U-shaped opening facing the front of the device. The welding worktable is mounted on the top of the mounting frame, and the welding assembly is located on the top of the welding worktable. The device also includes: The pipe end limiting mechanism has two symmetrically arranged parts, which are respectively installed on the left and right sides of the welding workbench. It includes a lower support part and an upper limit part, and the lower support part and the upper limit part are located at the bottom and top of the welding workbench, respectively. The outer end limiting mechanism of the tube is provided in two symmetrically, and the bottom ends are respectively connected to the top two sides of the base through moving components. It includes a tube bottom supporting part and a tube end limiting part, and the tube end limiting part is located outside the tube bottom supporting part. Two rotating feeding mechanisms are symmetrically arranged and located on the top of the support platform. The rotating feeding mechanism includes a rotating part and a telescopic part. The inner ends of the rotating feeding mechanism are located below the two sides of the welding workbench and are rotatably connected to the top of the base. A rotary drive assembly is located below the welding workbench and is connected to the inner ends of two rotary feeding mechanisms. When the tubular workpiece is on the rotating feeding mechanism, it can move along the length direction; when it is on the outer end limiting mechanism and the inner end limiting mechanism, it can rotate around the central axis.

[0008] Preferably, the upper limit position includes an extension platform fixed to both sides of the upper part of the welding workbench. Each extension platform is connected to a first lifting plate by two vertical and symmetrical first hydraulic rods. The bottom of the first lifting plate is symmetrically arranged and rotatably connected to two limit wheels. The lower support includes a second lifting plate located below the first lifting plate. The bottom of the second lifting plate is connected to the mounting frame via a second hydraulic rod, and two first support wheels are symmetrically arranged and rotatably connected to the top of the second lifting plate.

[0009] Preferably, the bottom of the first lifting plate is provided with an upper detection structure; The upper detection structure includes an upper contact plate located in the middle below the first lifting plate. A position sensor is provided on the upper contact plate. Two vertical upper spring shafts are symmetrically fixed on the top of the upper contact plate, and the top ends of the upper spring shafts extend out of the first lifting plate. The top two sides of the upper contact plate are connected to the first lifting plate through springs. A first electromagnet is fixed at the top middle of the upper contact plate and at a relative position on the first lifting plate. The first electromagnet is electrically connected to a power source and a switch.

[0010] Preferably, the tube bottom support includes a movable base plate fixed to the top of the movable component. A third lifting plate is connected above the movable base plate via a third hydraulic rod. The top of the third lifting plate has symmetrical and parallel second support wheels on the left and right sides. The middle of the second support wheel has an annular groove. The middle of the third lifting plate has a rectangular through groove. Gear seats are symmetrically fixed on both sides of the rectangular through groove. A drive structure is provided between the two gear seats, and the two ends of the drive structure are connected to the annular grooves of the two second support wheels. The pipe end limiting part includes two symmetrical and vertically fixed shafts fixed to the top outer side of the movable base plate. The lower part of the fixed shaft is fixed with an annular boss, and the upper part is slidably connected with a sliding seat. A spring is connected between the sliding seat and the annular boss, and a vertical sliding plate is fixed between the two sliding seats. A limiting plate is provided on the side of the sliding plate near the welding mechanism, and the limiting plate is connected to the sliding plate through a hydraulic telescopic rod.

[0011] Preferably, a lower detection structure is provided at the top center of the third lifting plate; The lower detection structure includes a shaft hole located in the middle of the top of two gear seats. A vertical lower spring shaft is slidably connected in the shaft hole. A lower contact plate is fixed to the top of the two lower spring shafts. A position sensor is provided on the lower contact plate. Springs are connected between the bottom sides of the lower contact plate and the gear seats. A second electromagnet is fixed to the bottom of the lower spring shaft and the bottom of the shaft hole, respectively. The second electromagnet is electrically connected to a power source and a switch.

[0012] Preferably, the rotating part includes a vertical rotating cylinder rotatably connected to the mounting frame. The rotating cylinder is correspondingly connected to the rotating drive assembly. A rotating base plate is fixed to the bottom of the rotating cylinder. An L-shaped fixing frame is fixed between the top inner section of the rotating base plate and the upper part of the rotating cylinder. Multiple conveying wheels are evenly arranged and rotatably connected to the top of the fixing frame, and a V-shaped groove is provided around the middle of the conveying wheels. The telescopic part includes an adjustable base plate that is slidably connected to the top of the rotating base plate. The adjustable base plate is located outside the fixed frame and is correspondingly connected to the fixed frame through an adjusting component. The top of the adjustable base plate is fixed to a conveying trough by multiple evenly arranged support frames. Multiple conveying wheels are evenly arranged and rotatably connected in the conveying trough, and the height position and structure of the conveying wheels of the telescopic part and the rotating part are the same.

[0013] Preferably, the adjustment assembly includes two limiting slide rails symmetrically fixed to the top of the rotating base plate, the two sides of the adjustment base plate are slidably connected to the corresponding limiting slide rails, and two second screws are symmetrically arranged and threadedly connected to the two sides of the adjustment base plate. The inner end of the second screw is rotatably connected to the fixed frame and connected to a drive structure.

[0014] Preferably, the rotation drive assembly includes a gear ring fixed to the lower part of the rotating cylinder, with a horizontal rack meshing on the gear ring. The two racks are symmetrical and parallel, and a drive plate is fixed to one end of each rack. A hydraulic mounting seat is fixed to the top of the base corresponding to the rear side of the drive plate. The hydraulic mounting seat and the drive plate are connected by a drive hydraulic rod.

[0015] Preferably, the moving component includes a moving seat fixed to the middle of the bottom of the moving base plate. The moving seat is located in the moving groove on the corresponding side of the base. Two first screws are symmetrically arranged and threadedly connected on both sides of the moving seat. The two ends of the first screws are rotatably connected to the moving groove. A driving structure is connected to the first screw near the outer end of the moving groove.

[0016] Preferably, the drive structure includes a drive gear located in the middle, one end of the drive gear is connected to a motor, two first transmission gears are symmetrically meshed on both sides of the drive gear, and a second transmission gear is meshed on the outer side of each first transmission gear. At the moving component, the second transmission gear of the drive structure is fixedly connected to the end of the first screw, and the first transmission gear and the drive gear are rotatably connected to the base, with the motor fixed to the top of the base; At the adjustment assembly, the second transmission gear of the drive structure is fixedly connected to the end of the second screw, and the first transmission gear and the drive gear are rotatably connected to the fixed frame, and the motor is fixed on the fixed frame; At the outer end limiting mechanism of the tube, the second transmission gear of the drive structure is fixedly connected to the middle of the second support wheel, and the first transmission gear and the drive gear are rotatably connected to the third lifting plate, and the motor is fixed to the bottom of the third lifting plate.

[0017] Preferably, the welding assembly includes two vertical welding adjustment hydraulic rods symmetrically fixed on the left and right sides of the top of the welding workbench. The bottom ends of the two welding adjustment hydraulic rods extend into the inner side of the welding workbench and are jointly fixed to a welding adjustment plate. A welding machine and a welding torch head are provided in the middle of the welding adjustment plate. Vertical fixed spring cylinders are symmetrically provided on the front and rear sides of the bottom. A telescopic seat is slidably connected in the fixed spring cylinder. An inclined cleaning plate is fixed at the bottom of the telescopic seat, and the cleaning plates on both sides are symmetrically inclined inward. The top of the telescopic seat is connected to the top of the fixed spring cylinder through a spring. A third electromagnet is fixed at a relative position to the top of the telescopic seat and the top of the fixed spring cylinder. The third electromagnet is electrically connected to a power source and a switch.

[0018] Preferably, the lower part of the welding workbench is provided with a cold water tank with the opening facing upward and a baffle plate inside. The rear end of the welding workbench is provided with a ventilation cavity with ventilation holes evenly distributed on the front side wall and an exhaust fan connected to the rear side. The bottom of the exhaust fan is connected to an exhaust pipe, and one end of the exhaust pipe extends into the cold water tank.

[0019] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention achieves synchronous rotational feeding of two pipe fittings to be welded through the cooperation of the rotating feeding mechanism and the rotating drive assembly, shortening the auxiliary time for loading and unloading, which is beneficial for continuous production. Furthermore, the U-shaped welding worktable makes the unloading operation of the pipe fittings more convenient. 2. The inner end limiting mechanism and the outer end limiting mechanism of the present invention work together to adapt to pipes of different diameters and provide stable support and limiting during welding, thereby improving positioning accuracy and clamping reliability. 3. This invention achieves continuous and uniform circumferential welding of the annular weld by driving the pipe to rotate around its central axis, in conjunction with the welding mechanism. This avoids the cumbersome operation and inconsistent weld quality caused by multiple clamping or manual flipping of the pipe in the traditional method. 4. The rotating feeding mechanism of the present invention can return to its original position outside after the pipe is clamped and independently prepare the next set of pipes. The feeding area is separated from the welding area, which effectively reduces the risk of operators coming into direct contact with high-temperature welds or moving parts. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention; Figure 2 This is a schematic diagram of the device status when the pipe fittings are transported to the top of the base. Figure 3 This is a schematic diagram of the end structure of the movable groove of the present invention; Figure 4 This is a schematic diagram of the welding mechanism of the present invention; Figure 5 This is a schematic diagram of the bottom structure of the welding workbench of the present invention; Figure 6 for Figure 5 Schematic diagram of the structure at point A in the middle; Figure 7 This is a schematic diagram of the internal structure of the welding workbench of the present invention; Figure 8 This is a schematic diagram of the welding assembly of the present invention; Figure 9 This is a schematic diagram of the structure of the second support wheel of the present invention; Figure 10 for Figure 9 Schematic diagram of the structure at point B Figure 11 This is a schematic diagram of the bottom structure of the movable base plate of the present invention; Figure 12 This is a schematic diagram of the rotating feeding mechanism of the present invention; Figure 13 This is a schematic diagram of the conveying trough of the present invention; Figure 14 This is a schematic diagram of the rotation drive assembly of the present invention.

[0022] The attached diagram lists the components represented by each number as follows: 100-Base, 101-Support platform, 102-Moving groove, 103-First screw, 104-Support column, 105-Support plate; 200-Welding workbench, 201-Cold water tank, 202-Exhaust fan, 203-Exhaust duct, 204-Material baffle, 205-Ventilation hole; 300-Welding assembly, 301-Welding adjustment hydraulic rod, 302-Welding machine, 303-Welding adjustment plate, 304-Welding torch head, 305-Fixed spring cylinder, 306-Telescopic seat, 307-Cleaning plate, 308-Third electromagnet; 400-Inner end limiting mechanism of the tube, 401-Extension platform, 402-First hydraulic rod, 403-First lifting plate, 404-Limiting wheel, 405-Second lifting plate, 406-First support wheel, 407-Second hydraulic rod, 408-Upper spring shaft, 409-Upper contact plate, 410-First electromagnet; 500 - Pipe outer end limiting mechanism, 501 - Moving base plate, 502 - Fixed shaft, 503 - Sliding seat, 504 - Sliding plate, 505 - Limiting plate, 506 - Second support wheel, 507 - Third hydraulic rod, 508 - Third lifting plate, 509 - Lower contact plate, 510 - Moving seat, 511 - Lower spring shaft; 600-Rotating feeding mechanism, 601-Rotating base plate, 602-Rotating cylinder, 603-Fixed frame, 604-Conveying trough, 605-Support frame, 606-Adjusting base plate, 607-Limiting slide rail, 608-Second screw, 609-Conveying wheel; 700-Rotation drive assembly, 701-Hydraulic mounting base, 702-Drive hydraulic rod, 703-Drive plate, 704-Rack, 705-Gear ring; 800 - Drive gear, 801 - First transmission gear, 802 - Second transmission gear. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1

[0025] Please refer to the accompanying drawings. This invention provides an apparatus for welding metal parts, such as... Figure 1 , Figure 2 As shown, it includes a base 100 and a welding mechanism mounted on the top center of the base 100, characterized in that: A horizontal support platform 101 is provided in the middle of the rear side of the base 100, and a mounting bracket is provided in the middle of the top of the base 100. The welding mechanism includes a welding worktable 200 and a welding assembly 300. The welding worktable 200 is configured as a transverse U-shape, and the U-shaped opening end of the welding worktable 200 faces the front side of the device. The welding worktable 200 is mounted on the top of the mounting frame, and the welding assembly 300 is disposed on the top of the welding worktable 200. The device also includes: The pipe end limiting mechanism 400 is provided in two symmetrically and is installed on the left and right sides of the welding workbench 200 respectively. It includes a lower support part and an upper limit part, and the lower support part and the upper limit part are located at the bottom and top of the welding workbench 200 respectively. The outer end limiting mechanism 500 of the tube is provided in two symmetrically, and the bottom ends are respectively connected to the top two sides of the base 100 through the moving components. It includes a tube bottom supporting part and a tube end limiting part, and the tube end limiting part is located outside the tube bottom supporting part. Two rotating feeding mechanisms 600 are symmetrically arranged and located on the top of the support platform 101. The rotating feeding mechanism 600 includes a rotating part and a telescopic part. The inner ends of the rotating feeding mechanism 600 are located below the two sides of the welding workbench 200 and are rotatably connected to the top of the base 100. A rotary drive assembly 700 is located below the welding workbench 200 and is connected to the inner ends of the two rotary feeding mechanisms 600. When the tubular workpiece is on the rotating feeding mechanism 600, it can move along the length direction. When it is on the outer end limiting mechanism 500 and the inner end limiting mechanism 400, it can rotate around the central axis. This multi-functional motion compatibility design enables the device to adapt to the rapid alignment of pipes of different lengths and meet the dynamic requirements of rotary welding. It has a compact structure and high functional integration.

[0026] During the pipe fitting feeding stage, such as Figure 1 As shown, two rotating feeding mechanisms 600 are located parallel to each other on the rear side of the base 100, and rotate the two pipe fittings to be welded onto the corresponding rotating feeding mechanism 600 by feeding equipment or manual operation, with the two ends of the pipe fittings suspended. Then, the rotation drive assembly 700 is started, causing the two rotation feeding mechanisms 600 and the pipe fittings on them to rotate simultaneously toward the base 100 until they are above the base 100, thus achieving synchronous rotation feeding of the two pipe fittings to be welded. At this time, the inner end of the pipe fitting is located between the upper limit part and the lower support part of the inner end limiting mechanism 400, and the outer end is located above the bottom support part of the outer end limiting mechanism 500 and inside the end limiting part.

[0027] Activate the pipe end limiting part to make it contact the outer end of the pipe, and push the pipe fitting towards the welding mechanism until the inner ends of the two pipe fittings contact and are located in the middle of the inner side of the welding workbench 200. Start the pipe bottom lifting part and the lower support part, so that they contact the bottom sides of the pipe fitting and lift the pipe fitting up, disengaging it from the rotating feeding mechanism 600, so that the rotating feeding mechanism 600 can rotate outward to return to its original position, so that the feeding operation can continue. At the same time, the upper limit position moves down to contact the top of the pipe fitting, limiting the position of the pipe fitting and improving its positional stability during processing.

[0028] The above structure and its operation ensure that the pipe fitting is fixed in position and does not shift during the welding process, and can adapt to pipe fittings of different diameters, with high positioning accuracy and strong clamping reliability.

[0029] After the pipe fittings are supported and positioned, the bottom support unit drives the pipe fittings to rotate around their central axis so that the circumferential welds on the inner ends of the two pipe fittings can be continuously and uniformly welded by the welding mechanism. This avoids the tedious operation of clamping or manually flipping the pipe fittings multiple times in traditional welding, resulting in good weld quality consistency and high processing efficiency.

[0030] After welding is completed, the inner end limiting mechanism 400 and the outer end limiting mechanism 500 return to their original positions. The pipe end between the outer end limiting mechanism 500 and the welding mechanism is lifted, transferred, and unloaded by external devices or manual operation. The U-shaped welding worktable 200 makes the unloading operation of the pipe fittings more convenient. At the same time, the loading mechanism 600 is rotated to perform the loading operation again, making the loading and unloading operation of the pipe fittings faster and more convenient, shortening the loading and unloading auxiliary time, realizing continuous production, and improving the efficiency of welding operations.

[0031] During the welding process, the rotating feeding mechanism 600 has returned to its original position to the outside, allowing for independent preparation of the next set of pipe fittings. Furthermore, the rotating feeding mechanism 600 is located behind the base 100, separating it from the welding area during feeding, thus avoiding direct contact between the operator and the welding mechanism or the high-temperature weld.

[0032] The device of this invention enables rapid material loading, precise alignment, stable clamping, continuous rotary welding, finished product unloading, and new material preparation for pipe welding, significantly improving the efficiency, accuracy, and ease of operation of welding processing, and is especially suitable for industrial production scenarios involving batch butt welding of pipe fittings.

[0033] Among them, such as Figure 4 As shown, the upper limit part includes an extension platform 401 fixed on both sides of the upper part of the welding workbench 200. A first lifting plate 403 is connected to the lower part of each extension platform 401 by two vertical and symmetrical first hydraulic rods 402. Two limit wheels 404 are symmetrically arranged and rotatably connected to the bottom of the first lifting plate 403. like Figure 5 As shown, the lower support includes a second lifting plate 405 located below the first lifting plate 403. The bottom of the second lifting plate 405 is connected to the mounting frame via a second hydraulic rod 407, and two first support wheels 406 are symmetrically arranged and rotatably connected to the top of the second lifting plate 405.

[0034] After the pipe is rotated above the base 100 and its axial position is adjusted, the pipe is positioned between the first lifting plate 403 and the second lifting plate 405. Then, the second lifting plate 405 moves upward under the drive of the second hydraulic rod 407, so that the two first support wheels 406 contact the bottom sides of the pipe and cooperate with the pipe bottom support part to lift it up and disengage it from the rotating feeding mechanism 600. Then, the first lifting plate 403 moves downward under the drive of the first hydraulic rod 402, so that the two limit wheels 404 contact the top sides of the pipe. This achieves symmetrical four-point contact limiting and support of the top and bottom sides of the pipe. It can not only automatically adapt to pipes of different diameters without replacing parts, but also allows the limit wheels 404 and the first support wheels 406 to rotate, ensuring that the pipe is stably clamped while allowing the pipe to rotate freely around its own axis.

[0035] Among them, such as Figure 9 As shown, the tube bottom support includes a movable base plate 501 fixed to the top of the movable component. A third lifting plate 508 is connected above the movable base plate 501 via a third hydraulic rod 507. The top of the third lifting plate 508 has symmetrical and parallel second support wheels 506 on the left and right sides. The middle of the second support wheel 506 has an annular groove. The middle of the third lifting plate 508 has a rectangular through groove. Gear seats are symmetrically fixed on both sides of the rectangular through groove. A drive structure is provided between the two gear seats, and the two ends of the drive structure are connected to the annular grooves of the two second support wheels 506. The pipe end limiting part includes two symmetrical and vertically fixed fixed shafts 502 on the outer side of the top of the movable base plate 501. The lower part of the fixed shaft 502 is fixed with an annular boss, and the upper part is slidably connected with a sliding seat 503. A spring is connected between the sliding seat 503 and the annular boss, and a vertical sliding plate 504 is fixed between the two sliding seats 503. A limiting plate 505 is provided on the side of the sliding plate 504 near the welding mechanism, and the limiting plate 505 is connected to the sliding plate 504 through a hydraulic telescopic rod.

[0036] When the pipe moves above the base 100, the outer end of the pipe is located above the middle of the third lifting plate 508. Then the moving component is activated, which drives the moving base plate 501 and its upper structure to move towards the welding mechanism until the limiting plate 505 contacts the outer end of the pipe and pushes the pipe to move towards the welding mechanism. Through the limiting plates 505 on both sides of the base 100, the two pipes move inward at the same time until the inner ends of the two pipes contact and are located below the welding mechanism, thereby achieving precise docking and centering of the inner ends of the two pipes. The third hydraulic rod 507 of the pipe bottom support unit drives the second support wheel 506 to move upward and contact the bottom of the pipe, and cooperates with the lower support part of the pipe inner end limiting mechanism 400 to lift the pipe and disengage it from the rotating feeding mechanism 600, so that the rotating feeding mechanism 600 can rotate outward to return to its original position for subsequent feeding operations.

[0037] During the upward movement of the pipe fitting, since the end of the pipe fitting is in close contact with the limiting plate 505, the limiting plate 505 moves vertically and automatically adjusts its position by cooperating with the fixed shaft 502, spring, sliding seat 503 and sliding plate 504.

[0038] When the pipe fitting needs to complete the limiting operation, the hydraulic telescopic rod drives the limiting plate 505 to move away from the pipe end, avoiding resistance to the subsequent rotation of the pipe fitting. When the pipe fitting needs to be rotated, the two second support wheels 506 are driven to rotate simultaneously through the drive structure. Through the friction between the second support wheels 506 and the pipe fitting, the pipe fitting is driven to rotate so that the inner end of the pipe can be welded along the circumferential direction.

[0039] The second support wheel 506 can be equipped with a rubber sleeve or other structure to increase the contact friction with the pipe and improve driving stability.

[0040] The entire mechanism integrates axial pushing, vertical lifting, adaptive following, and rotary drive, which not only ensures accurate alignment and stable support before pipe welding, but also realizes interference-free active rotary welding, improving welding quality and efficiency.

[0041] Among them, such as Figure 13 As shown, the rotating part includes a vertical rotating cylinder 602 rotatably connected to the mounting frame. The rotating cylinder 602 is correspondingly connected to the rotating drive assembly 700. A rotating base plate 601 is fixed to the bottom of the rotating cylinder 602. An L-shaped fixing frame 603 is fixed between the top inner section of the rotating base plate 601 and the upper part of the rotating cylinder 602. Multiple conveying wheels 609 are evenly arranged and rotatably connected to the top of the fixing frame 603, and a V-shaped groove is provided around the middle of the conveying wheel 609. The telescopic part includes an adjusting base plate 606 that is slidably connected to the top of the rotating base plate 601. The adjusting base plate 606 is located outside the fixed frame 603 and is correspondingly connected to the fixed frame 603 through an adjusting component. The top of the adjusting base plate 606 is fixed to a conveying groove 604 by a plurality of evenly arranged support frames 605. A plurality of conveying wheels 609 are evenly arranged and rotatably connected in the conveying groove 604, and the height position and structure of the conveying wheels 609 of the telescopic part and the rotating part are the same.

[0042] During loading, two rotating loading mechanisms 600 are positioned parallel to each other on the rear side of the base 100 and on the support platform 101. Pipes are placed onto multiple conveyor wheels 609 via external devices or manually. The middle part of the pipe is located on the conveyor wheels 609 of the rotating and telescopic parts, with the inner and outer ends suspended. The conveyor wheels 609 are provided with V-grooves, which can automatically center and stably support pipes of different diameters. Through rotation, the pipe moves to above the base 100, with the inner end located in the inner end limiting mechanism 400 and the outer end located above the outer end limiting mechanism 500, so as to facilitate subsequent operations.

[0043] When it is necessary to adjust the support position of the conveyor wheel 609 on the pipe according to the pipe length, the adjustment assembly causes the adjustment base plate 606 to drive the conveyor groove 604 and the conveyor wheel 609 to move outward or inward relative to the rotating base plate 601. Since the equipment of this application is mainly for pipes with longer lengths, while keeping both ends suspended, the support length range can be increased or decreased according to the pipe length, and the support length can be kept at the maximum value within a suitable range. This avoids bending deformation or shaking caused by excessive pipe length, and ensures that the inner and outer ends can smoothly enter the inner end limiting mechanism 400 and the outer end limiting mechanism 500, thus achieving flexible adaptation and stable support for pipes of different lengths.

[0044] Among them, such as Figure 14 As shown, the rotation drive assembly 700 includes a gear ring 705 fixed to the lower part of the rotating cylinder 602. A horizontal rack 704 meshes on the gear ring 705. The two racks 704 are symmetrical and parallel, and a drive plate 703 is fixed to one end. A hydraulic mounting seat 701 is fixed on the top of the base 100 corresponding to the rear side of the drive plate 703. The hydraulic mounting seat 701 and the drive plate 703 are connected by a drive hydraulic rod 702. The drive hydraulic rod 702 causes the drive plate 703 and the rack 704 to move in the front-back direction, thereby driving the gear ring 705 and the rotating cylinder 602 to rotate, realizing the rotation loading operation of the pipes on both sides.

[0045] Example 2

[0046] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that the moving component includes a moving seat 510 fixed to the middle of the bottom of the moving base plate 501. The moving seat 510 is located in the moving groove 102 on the corresponding side of the base 100. Two first screws 103 are symmetrically arranged and threadedly connected on both sides of the moving seat 510. The two ends of the first screws 103 are rotatably connected to the moving groove 102. A driving structure is connected to the first screws 103 near the outer end of the moving groove 102. The two first screws 103 are rotated simultaneously by the driving structure, thereby driving the moving seat 510 and the moving base plate 501 to move in the left and right direction along the base 100, so as to realize the position adjustment of the tube outer end limiting mechanism 500.

[0047] The adjustment assembly includes two limiting slide rails 607 symmetrically fixed to the top of the rotating base plate 601. The two sides of the adjustment base plate 606 are slidably connected to the corresponding limiting slide rails 607. Two second screws 608 are symmetrically arranged and threadedly connected to the two sides of the adjustment base plate 606. The inner end of the second screw 608 is rotatably connected to the fixed frame 603 and connected to a drive structure. The drive structure causes the two second screws 608 to rotate simultaneously, thereby driving the adjustment base plate 606 to move along the limiting slide rails 607, realizing the telescopic adjustment of the adjustment base plate 606 and the conveying groove 604 and other structures thereon.

[0048] Example 3

[0049] The structure of this embodiment is basically the same as that of embodiment two. The difference is that the drive structure includes a drive gear 800 located in the middle. One end of the drive gear 800 is connected to a motor. Two first transmission gears 801 are symmetrically meshed on both sides of the drive gear 800, and a second transmission gear 802 is meshed on the outer side of each first transmission gear 801. At the mobile component, such as Figure 3 As shown, the second transmission gear 802 of the drive structure is fixedly connected to the end of the first screw 103, and the first transmission gear 801 and the drive gear 800 are rotatably connected to the base 100, and the motor is fixed to the top of the base 100. At the adjustment component, such as Figure 12 As shown, the second transmission gear 802 of the drive structure is fixedly connected to the end of the second screw 608, and the first transmission gear 801 and the drive gear 800 are rotatably connected to the fixed frame 603, and the motor is fixed on the fixed frame 603. At the 500-point limit mechanism at the outer end of the pipe, such as Figure 11 As shown, the second transmission gear 802 of the drive structure is fixedly connected to the middle of the second support wheel 506, and the first transmission gear 801 and the drive gear 800 are rotatably connected to the third lifting plate 508, with the motor fixed to the bottom of the third lifting plate 508.

[0050] When drive is needed, the motor starts, the drive gear 800 rotates accordingly, and then through the transmission of the first transmission gear 801 and the second transmission gear 802, the corresponding structure rotates, thereby realizing position adjustment or pipe drive.

[0051] Example 4

[0052] The structure of this embodiment is basically the same as that of Embodiment 1, except that, as Figure 8 As shown, the welding assembly 300 includes two vertical welding adjustment hydraulic rods 301 symmetrically fixed on the left and right sides of the top of the welding workbench 200. The bottom ends of the two welding adjustment hydraulic rods 301 extend into the inner side of the welding workbench 200 and are jointly fixed to a welding adjustment plate 303. A welding machine 302 and a welding torch head 304 are provided in the middle of the welding adjustment plate 303. Vertical fixed spring cylinders 305 are symmetrically provided on the front and rear sides of the bottom. A telescopic seat 306 is slidably connected in the fixed spring cylinder 305. An inclined cleaning plate 307 is fixed at the bottom end of the telescopic seat 306, and the cleaning plates 307 on both sides are symmetrically inclined inward. The top of the telescopic seat 306 is connected to the top of the fixed spring cylinder 305 through a spring. A third electromagnet 308 is fixed at a relative position on the top of the telescopic seat 306 and the fixed spring cylinder 305, respectively. The third electromagnet 308 is electrically connected to a power source and a switch.

[0053] Before welding begins, the height of the welding adjustment plate 303 is adjusted by the welding adjustment hydraulic rod 301 so that the cleaning plates 307 on both sides simultaneously contact the top sides of the pipe fitting, while the welding gun head 304 does not contact the top of the pipe fitting. Then the pipe fitting is rotated, and the cleaning plates 307 clean the welding positions at the inner ends of the two pipe fittings to remove oxide scale or oil stains, thereby improving the subsequent welding quality. The spring adapts to different pipe diameters to avoid rigid scratches. When the welding work begins, the third electromagnet 308 is energized and attracted to the cleaning plate 307 and fixed in place, thereby causing the telescopic seat 306 to move the cleaning plate 307 upward and disengage it from the top of the pipe fitting. The height position of the welding adjustment plate 303 is adjusted so that the welding gun head 304 contacts the inner ends of the two pipe fittings and performs welding. The welding position is switched by driving the pipe fitting to complete the circumferential welding of the pipe ends.

[0054] Example 5

[0055] The structure of this embodiment is basically the same as that of Embodiment 1, except that, as Figure 7 As shown, the lower part of the welding workbench 200 is provided with a cold water tank 201, the opening of the cold water tank 201 faces upward, and a baffle plate 204 is provided inside. The rear end of the welding workbench 200 is provided with a ventilation cavity, and ventilation holes 205 are evenly distributed on the front side wall of the ventilation cavity. An exhaust fan 202 is connected to the rear side, and an exhaust pipe 203 is connected to the bottom of the exhaust fan 202. One end of the exhaust pipe 203 extends into the cold water tank 201.

[0056] The welding workbench 200 of the present invention significantly improves the welding working environment and the quality of pipe welds by integrating fume extraction and cooling functions; During the welding process, the welding fumes are transported to the cold water tank 201 through the exhaust fan 202 and exhaust pipe 203. The cold water in the tank adsorbs, removes dust and cools the fumes, effectively reducing the spread of harmful fumes, protecting the health of operators and meeting environmental protection requirements. Then, the cooling airflow rises and contacts the bottom of the pipe fitting, so that when the top of the pipe fitting is welded and the welding position is rotated to the bottom of the pipe fitting, it is cooled in time by the rising airflow. This helps to refine the weld grains, reduce deformation and residual stress in the heat-affected zone, and improve the mechanical properties and appearance quality of the weld.

[0057] Among them, the baffle plate 204 can intercept welding slag or impurities to prevent blockage of the exhaust pipe 203.

[0058] Example 6

[0059] The structure of this embodiment is basically the same as that of Embodiment 1. The difference is that the bottom of the first lifting plate 403 is provided with an upper detection structure, and the top middle of the third lifting plate 508 is provided with a lower detection structure.

[0060] Among them, such as Figure 6 As shown, the upper detection structure includes an upper contact plate 409 located in the middle below the first lifting plate 403. A position sensor is provided on the upper contact plate 409. Two vertical upper spring shafts 408 are symmetrically fixed to the top of the upper contact plate 409, and the top ends of the upper spring shafts 408 extend out of the first lifting plate 403. The top two sides of the upper contact plate 409 are connected to the first lifting plate 403 by springs. A first electromagnet 410 is fixed at the top middle of the upper contact plate 409 and at a relative position on the first lifting plate 403. The first electromagnet 410 is electrically connected to a power source and a switch.

[0061] When the pipe is positioned between the two first support wheels 406 and the two limit wheels 404, the upper contact plate 409 contacts the top of the pipe under the action of the spring. The height position of the top of the pipe is detected by the position sensor so that it can be matched with the detection results of the lower detection structure to calculate the actual outer diameter of the pipe and its center coordinates in the height direction. During the processing of the pipe, the upper contact plate 409 is disengaged from the top of the pipe by the attraction and contact fixation of the first electromagnet 410, so as to avoid interference with the pipe.

[0062] Among them, such as Figure 10As shown, the lower detection structure includes a shaft hole located in the middle of the top of the two gear seats. A vertical lower spring shaft 511 is slidably connected in the shaft hole. A lower contact plate 509 is fixed to the top of the two lower spring shafts 511. A position sensor is provided on the lower contact plate 509. Springs are connected between the bottom sides of the lower contact plate 509 and the gear seats. A second electromagnet is fixed to the bottom of the lower spring shaft 511 and the bottom of the shaft hole, respectively. The second electromagnet is electrically connected to a power source and a switch.

[0063] When the pipe fitting is placed on the two second support wheels 506, the top surface of the lower contact plate 509 contacts the bottom center of the pipe fitting through the action of a spring. This allows the position sensor to measure the height of the bottom of the pipe fitting, which, in conjunction with the detection results of the upper detection structure, calculates the actual outer diameter of the pipe fitting and its center coordinates in the height direction. This provides a reliable basis for the precise position adjustment of the pre-welding limit wheel 404 and the first support wheel 406, as well as the alignment of the welding torch head 304, thus realizing online automatic identification and adaptive control of the pipe fitting specifications. During pipe fitting processing, the lower contact plate 509 moves downward and disengages from the bottom of the pipe fitting through the energization and contact fixation of the second electromagnet.

[0064] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0065] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An apparatus for welding metal parts, comprising a base (100) and a welding mechanism mounted on the top center of the base (100), characterized in that: A horizontal support platform (101) is provided in the middle of the rear side of the base (100), and a mounting bracket is provided in the middle of the top of the base (100). The welding mechanism includes a welding workbench (200) and a welding assembly (300). The welding workbench (200) is configured as a transverse U-shape, and the U-shaped opening end of the welding workbench (200) faces the front side of the device. The welding workbench (200) is installed on the top of the mounting frame, and the welding assembly (300) is located on the top of the welding workbench (200). The device further includes: The pipe end limiting mechanism (400) is provided in two symmetrically and is installed on the left and right sides of the welding workbench (200). It includes a lower support part and an upper limit part, and the lower support part and the upper limit part are located at the bottom and top of the welding workbench (200) respectively. The outer end limiting mechanism (500) of the tube is provided in two symmetrically, and the bottom ends are respectively connected to the top two sides of the base (100) through the moving components. It includes a tube bottom supporting part and a tube end limiting part, and the tube end limiting part is located outside the tube bottom supporting part. Two rotating feeding mechanisms (600) are symmetrically arranged and located on the top of the support platform (101). The rotating feeding mechanism (600) includes a rotating part and a telescopic part. The inner end of the rotating feeding mechanism (600) is located below both sides of the welding workbench (200) and is rotatably connected to the top of the base (100). A rotary drive assembly (700) is located below the welding workbench (200) and is connected to the inner ends of two rotary feeding mechanisms (600). When the tubular workpiece is on the rotating feeding mechanism (600), it can move along the length direction. When it is on the outer end limiting mechanism (500) and the inner end limiting mechanism (400), it can rotate around the central axis. After the welding process is completed, the integral pipe formed by welding the two tubular workpieces is unloaded through the U-shaped opening end on the front side of the welding worktable (200). The upper limit section includes a first lifting plate (403), the bottom of the first lifting plate (403) is provided with an upper detection structure, the tube bottom support section includes a third lifting plate (508), the top middle of the third lifting plate (508) is provided with a lower detection structure, the middle of the third lifting plate (508) is provided with a rectangular through groove, and gear seats are symmetrically fixed on both sides of the rectangular through groove. The upper detection structure includes an upper contact plate (409) located in the middle below the first lifting plate (403). A position sensor is provided on the upper contact plate (409). Two vertical upper spring shafts (408) are symmetrically fixed on the top of the upper contact plate (409), and the top of the upper spring shafts (408) extends out of the first lifting plate (403). The top two sides of the upper contact plate (409) are connected to the first lifting plate (403) by springs. A first electromagnet (410) is fixed at the top middle of the upper contact plate (409) and at a relative position on the first lifting plate (403). The first electromagnet (410) is electrically connected to a power source and a switch. The lower detection structure includes a shaft hole located in the middle of the top of the two gear seats. A vertical lower spring shaft (511) is slidably connected in the shaft hole. A lower contact plate (509) is fixed to the top of the two lower spring shafts (511). A position sensor is provided on the lower contact plate (509). Springs are connected between the bottom sides of the lower contact plate (509) and the gear seats. A second electromagnet is fixed to the bottom of the lower spring shaft (511) and the bottom of the shaft hole, respectively. The second electromagnet is electrically connected to a power source and a switch.

2. The apparatus for welding metal parts according to claim 1, characterized in that, The upper limit section includes an extension platform (401) fixed on both sides of the upper part of the welding workbench (200). The lower part of each extension platform (401) is connected to a first lifting plate (403) by two vertical and symmetrical first hydraulic rods (402). The bottom of the first lifting plate (403) is symmetrically arranged and rotatably connected to two limit wheels (404). The lower support includes a second lifting plate (405) located below the first lifting plate (403). The bottom of the second lifting plate (405) is connected to the mounting frame via a second hydraulic rod (407), and the top of the second lifting plate (405) is symmetrically arranged and rotatably connected with two first support wheels (406).

3. The apparatus for welding metal parts according to claim 1, characterized in that, The tube bottom support includes a movable base plate (501) fixed to the top of the movable component. The upper part of the movable base plate (501) is connected to a third lifting plate (508) via a third hydraulic rod (507). The top left and right sides of the third lifting plate (508) are symmetrically and parallelly provided with second support wheels (506). The middle part of the second support wheel (506) is provided with an annular groove. A drive structure is provided between the two gear seats, and the two ends of the drive structure are connected to the annular grooves of the two second support wheels (506). The tube end limiting part includes two symmetrical and vertically fixed fixed shafts (502) on the outer side of the top of the movable base plate (501). The lower part of the fixed shaft (502) is fixed with an annular boss, and the upper part is slidably connected with a sliding seat (503). A spring is connected between the sliding seat (503) and the annular boss, and a vertical sliding plate (504) is fixed between the two sliding seats (503). A limiting plate (505) is provided on the side of the sliding plate (504) near the welding mechanism, and the limiting plate (505) is connected to the sliding plate (504) through a hydraulic telescopic rod.

4. The apparatus for welding metal parts according to claim 1, characterized in that, The rotating part includes a vertical rotating cylinder (602) rotatably connected to the mounting frame. The rotating cylinder (602) is correspondingly connected to the rotating drive assembly (700). A rotating base plate (601) is fixed to the bottom of the rotating cylinder (602). An L-shaped fixing frame (603) is fixed between the top inner section of the rotating base plate (601) and the upper part of the rotating cylinder (602). Multiple conveying wheels (609) are evenly arranged and rotatably connected to the top of the fixing frame (603), and a V-shaped groove is provided around the middle of the conveying wheel (609). The telescopic part includes an adjusting base plate (606) slidably connected to the top of the rotating base plate (601). The adjusting base plate (606) is located outside the fixed frame (603) and is correspondingly connected to the fixed frame (603) through an adjusting component. The top of the adjusting base plate (606) is fixed to a conveying groove (604) by a plurality of evenly arranged support frames (605). A plurality of conveying wheels (609) are evenly arranged and rotatably connected in the conveying groove (604), and the height position and structure of the conveying wheels (609) of the telescopic part and the rotating part are the same.

5. The apparatus for welding metal parts according to claim 4, characterized in that, The rotation drive assembly (700) includes a gear ring (705) fixed to the lower part of the rotating cylinder (602). A horizontal rack (704) meshes on the gear ring (705). The two racks (704) are symmetrical and parallel, and a drive plate (703) is fixed at one end. A hydraulic mounting seat (701) is fixed on the top of the base (100) at the rear position corresponding to the drive plate (703). The hydraulic mounting seat (701) and the drive plate (703) are connected by a drive hydraulic rod (702).

6. The apparatus for welding metal parts according to claim 3, characterized in that, The moving component includes a moving seat (510) fixed to the middle of the bottom of the moving base plate (501). The moving seat (510) is located in the moving groove (102) on the corresponding side of the base (100). Two first screws (103) are symmetrically arranged and threadedly connected on both sides of the moving seat (510). The two ends of the first screws (103) are rotatably connected to the moving groove (102). A driving structure is connected to the first screws (103) near the outer end of the moving groove (102).

7. The apparatus for welding metal parts according to any one of claims 1 to 6, characterized in that, The welding assembly (300) includes two vertical welding adjustment hydraulic rods (301) symmetrically fixed on the left and right sides of the top of the welding workbench (200). The bottom ends of the two welding adjustment hydraulic rods (301) extend into the inside of the welding workbench (200) and are jointly fixed to a welding adjustment plate (303). A welding machine (302) and a welding torch head (304) are provided in the middle of the welding adjustment plate (303), and vertical fixing spring cylinders (305) are symmetrically provided on the front and rear sides of the bottom. A telescopic seat (306) is slidably connected in the fixed spring cylinder (305). An inclined cleaning plate (307) is fixed at the bottom of the telescopic seat (306), and the cleaning plates (307) on both sides are symmetrically inclined inward. The top of the telescopic seat (306) is connected to the top of the fixed spring cylinder (305) through a spring. A third electromagnet (308) is fixed at the relative position of the top of the telescopic seat (306) and the fixed spring cylinder (305). The third electromagnet (308) is electrically connected to a power source and a switch.

8. The apparatus for welding metal parts according to any one of claims 1 to 6, characterized in that, The lower part of the welding workbench (200) is provided with a cold water tank (201), the opening of the cold water tank (201) faces upward, and a baffle plate (204) is provided inside. The rear end of the welding workbench (200) is provided with a ventilation cavity, and ventilation holes (205) are evenly distributed on the front side wall of the ventilation cavity. An exhaust fan (202) is connected to the rear side. An exhaust pipe (203) is connected to the bottom of the exhaust fan (202), and one end of the exhaust pipe (203) extends into the cold water tank (201).

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