Multi-station welding device for water pipe connector
The arc-shaped plate clamping and rotation design of the multi-station welding device solves the problem of insufficient welding area for short water pipe joints, improves welding strength and production quality, reduces leakage risk, and enhances the applicability and reliability of the device.
Patent Information
- Application Number
- CN202511715357.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-01-13
AI Technical Summary
Existing laser welding technology has a small effective welding area when welding short water pipe joints, resulting in insufficient weld strength and making it easy for the weld to detach and coolant to leak.
A multi-station welding device is adopted, which clamps the water pipe and water pipe joint together with multiple arc plates. During the welding process, the arc plates are moved away from the joint in turn to ensure the effective welding area. Combined with modular design and electric control rotating shaft to drive the water pipe to rotate, the welding firmness is increased, and heat dissipation is achieved through arc plates and ventilation slots.
It improved the welding strength of short water pipe joints, reduced the probability of weld failure and coolant leakage, enhanced the application range and reliability of the equipment, and improved the quality of the assembled products.
Smart Images
Figure CN121315501A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of laser welding, in particular to a multi-station welding device for water pipe joints. BACKGROUND
[0002] In the production and assembly process of industrial water-cooled pipes, laser welding technology is often used to weld water-cooled joints on water-cooled pipes. During the welding process, a clamp is usually used to clamp the combined position of the water pipe joint and the water-cooled pipe at the same time to ensure that the water pipe joint does not move relative to the water-cooled pipe during welding. However, when welding small-sized water pipe joints, the clamp itself needs to occupy a part of the width of the combined position of the water pipe joint and the water-cooled pipe, which further compresses the effective welding area during welding, reduces the bonding force and firmness between the water pipe joint and the water-cooled pipe, and causes the produced water-cooled pipes to be prone to de-welding and cooling liquid leakage due to periodic impact of high-pressure cooling liquid during use, resulting in additional maintenance and cleaning costs. SUMMARY
[0003] In order to overcome the shortcomings of the prior art laser welding technology, such as small effective welding area when welding short water pipe joints, which leads to insufficient welding firmness, the present application provides a multi-station welding device for water pipe joints.
[0004] The technical implementation scheme of the present application is as follows: a multi-station welding device for water pipe joints, comprising an operation table, an electric sliding rail, a driving arm and a cooling pipeline mounted on the operation table, a laser welding head mounted on the driving arm, an electric sliding block fixedly connected to the electric sliding rail, a clamping platform fixedly connected to the electric sliding block, a fixed block fixedly connected to the clamping platform, an electric moving block slidingly connected to the clamping platform, an installation plate fixedly connected to the opposite side of the fixed block and the electric moving block, a sliding half ring rotationally connected to the installation plate, a plurality of limiting plates fixedly connected to the sliding half ring, all the limiting plates being circumferentially spaced apart when the two sliding half rings are in contact, the limiting plates being provided with inclined sliding grooves, a sliding member slidingly connected to the limiting plates through the inclined sliding grooves, an arc-shaped plate fixedly connected to one side of the sliding member close to the center of the circle where the adjacent sliding half ring is located, all the arc-shaped plates being used for clamping the water pipe and the water pipe joint, a moving mechanism provided on the two sliding half rings and used for driving the adjacent sliding member to move away from the water pipe, and a rotating mechanism provided in the operation table and used for driving the water pipe joint to rotate.
[0005] Further, the moving mechanism comprises symmetrically and spacedly distributed first fixing columns, the number of the first fixing columns is consistent with the number of the sliding members and one-to-one corresponding, the first fixing columns are fixedly connected to the adjacent sliding half rings near the corresponding sliding members, the first fixing columns are slidingly connected with connecting members, and first elastic members are installed between the first fixing columns and the connecting members, the connecting members are slidingly connected with the corresponding sliding members, the inclined sliding grooves on the limiting plates are inclined from the side far away from the adjacent sliding half rings to the side near the adjacent sliding half rings to the side near the center of the circle where the adjacent sliding half rings are located, and the mounting plates on the fixing blocks are provided with driving components for driving the adjacent sliding members to move along the inclined sliding grooves on the adjacent limiting plates.
[0006] Further, the connecting members are fixedly connected with first magnets, the sliding half rings are fixedly connected with second magnets which are spacedly distributed and one-to-one corresponding to the first magnets, and the first magnets and the corresponding second magnets are magnetically attracted to each other.
[0007] Further, the inclined sliding grooves on the limiting plates are composed of two sections of grooves which are communicated with each other, the included angle between the straight line where the groove near the sliding half rings is located and the vertical plane where the sliding half ring is located is smaller than the included angle between the straight line where the groove far away from the sliding half rings is located and the vertical plane where the sliding half ring is located.
[0008] Further, the driving components comprise electric push rods, the electric push rods are fixedly connected to the mounting plates near the fixing blocks, the telescopic ends of the electric push rods are rotationally connected with rotating rods through electric rotating shafts, the rotating rods are fixedly connected with arc-shaped baffles, both ends of the arc-shaped baffles are provided with inclined surfaces, the arc-shaped baffles move the connecting members in the direction far away from the adjacent sliding half rings by extruding the adjacent connecting members, and in the axial direction of the sliding half rings, the length of the inclined surfaces of the arc-shaped baffles is greater than the length of the inclined sliding grooves on the limiting plates.
[0009] Further, the rotating mechanism comprises electric control rotating shafts, the electric control rotating shafts are installed on the operation tables, the electric control rotating shafts are fixedly connected with fixing plates, the fixing plates are fixedly connected with symmetrically distributed second fixing columns, the second fixing columns are rotationally connected with swinging rods, and second elastic members are installed between the second fixing columns and the swinging rods, the swinging rods are rotationally connected with arc-shaped clamping plates, the arc-shaped clamping plates are used for clamping water pipe joints, symmetrically distributed second fixing columns are commonly slidingly connected with receiving plates, and steel wires are fixedly connected between the swinging rods and the receiving plates.
[0010] Further, the arc-shaped clamping plates are made of elastic materials.
[0011] Further, the arc-shaped plates are provided with spacedly distributed ventilation grooves.
[0012] Furthermore, the angle between the axis of the cooling pipe outlet and the axis of the electrically controlled rotating shaft is less than 45°, and the cooling pipe outlet is located above the sliding semi-ring.
[0013] Furthermore, the mounting plate is fixedly connected to a third magnet, and the sliding semi-ring is fixedly connected to a fourth magnet, with the third magnet and the fourth magnet attracting each other magnetically.
[0014] Compared with the prior art, the present invention has the following advantages: The present invention uses multiple arc-shaped plates to clamp the water pipe and the water pipe joint together, and during the welding process, the arc-shaped plates are moved away from the joint of the water pipe and the water pipe joint in sequence, thereby welding the joint of the water pipe and the water pipe joint at the clamped position. While effectively clamping the water pipe and the water pipe joint, the width of the effective welding area is guaranteed, thereby increasing the strength of welding the short-sized water pipe joint and improving the overall quality of the produced and assembled products.
[0015] This invention relies on modular design. By replacing the pre-prepared sliding half-rings with arc plates of different specifications, the fixture specifications can be quickly and effectively replaced according to the products being produced, increasing the application range of this device. Furthermore, the electrically controlled rotating shaft that drives the water pipe and water pipe joint to rotate is installed on the operating table and does not need to be replaced in conjunction with the replacement of the sliding half-ring, thus increasing the reliability of the device.
[0016] This invention uses an arc-shaped plate and ventilation grooves to dissipate heat from the water pipe and water pipe joint at the clamped position. On the one hand, it increases the heat dissipation efficiency of the water pipe at the welded point. On the other hand, while dissipating heat, it squeezes the joint between the water pipe and the water pipe joint, thereby increasing the strength of the weld at the joint between the water pipe and the water pipe joint and reducing the probability of accidents such as leakage. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the drive arm and laser welding head of the present invention; Figure 3 This is a three-dimensional structural diagram of the clamping platform, fixing block, and electric moving block of the present invention; Figure 4 This is a three-dimensional structural diagram of the mounting plate and sliding semi-ring of the present invention; Figure 5 This is an exploded view of the mounting plate and sliding half-ring of the present invention; Figure 6 This is a schematic diagram showing the swing position of the electric push rod and the arc-shaped baffle of the present invention; Figure 7 This is a cross-sectional view of the connector of the present invention; Figure 8 This is a three-dimensional structural diagram of the swing rod and arc-shaped plate of the present invention; Figure 9 This is a cross-sectional view of the swing arm of the present invention.
[0018] The attached drawings include the following reference numerals: 1. Operating platform, 2. Electric slide rail, 3. Drive arm, 4. Cooling pipe, 5. Laser welding head, 6. Clamping platform, 7. Fixed block, 8. Electric moving block, 9. Mounting plate, 10. Sliding semi-ring, 11. Limiting plate, 12. Sliding component, 13. Arc plate, 131. Ventilation slot, 14. First fixed column, 15. Connecting component, 16. First magnet, 17. Second magnet, 18. Electric push rod, 19. Rotating rod, 20. Arc baffle, 21. Electrically controlled rotating shaft, 22. Fixed plate, 23. Second fixed column, 24. Swing rod, 25. Arc clamping plate, 26. Receiving plate, 27. Third magnet, 28. Fourth magnet. Detailed Implementation
[0019] First, it should be noted that in different described embodiments, the same components are given the same reference numerals or the same component names. The disclosure contained throughout this specification can be applied semantically to the same components having the same reference numerals or the same component names. Location descriptions selected in the specification, such as front, back, top, etc., also refer to the directly described and illustrated figures and are semantically applied to the new location when the location changes.
[0020] Example 1: This example discloses a multi-station welding device for water pipe joints, which addresses the problem that existing laser welding technology has a small effective welding area and results in low weld strength when welding short water pipe joints.
[0021] A multi-station welding device for water pipe joints, as described in the reference. Figures 1-7The system includes an operating platform 1, on which a control terminal, an electric slide rail 2, a drive arm 3, and a cooling pipe 4 are mounted. A laser welding head 5 is mounted on the drive arm 3. The drive arm 3 is an existing electrical control device used to move the laser welding head 5 vertically and horizontally. A clamping platform 6 is fixedly connected to an electric slider on the electric slide rail 2. A fixing block 7 is fixedly connected to the clamping platform 6. An electric moving block 8 is slidably connected to the clamping platform 6 via the slide rail. Mounting plates 9 are fixedly connected to opposite sides of the fixing block 7 and the electric moving block 8. A sliding half-ring 10 is rotatably connected to the mounting plate 9. The two sliding half-rings 10 together form a complete ring. The rotatable connection between the mounting plate 9 and the sliding half-ring 10 is an open groove. When the two mounting plates 9 are at their minimum distance and the two sliding half-rings 10 are in contact, the sliding half-ring 10 can be completely rotated from the adjacent mounting plate 9. Moved to another mounting plate 9, the sliding half-ring 10 is fixed with several limiting plates 11. When the two sliding half-rings 10 are in contact, all the limiting plates 11 are circumferentially spaced. The limiting plates 11 are provided with inclined sliding grooves. The limiting plates 11 are slidably connected to the sliding parts 12 through the inclined sliding grooves. The side of the sliding part 12 near the center of the circle where the adjacent sliding half-ring 10 is located is fixed with an arc plate 13. When the two sliding half-rings 10 are in contact, all the arc plates 13 together form a cylindrical clamp for clamping the joint between the water pipe and the water pipe joint. The two sliding half-rings 10 are jointly provided with a moving mechanism for driving the adjacent sliding parts 12 away from the water pipe. The rear side of the operating table 1 is provided with a rotating mechanism for driving the water pipe joint to rotate. The electric slide rail 2, drive arm 3, cooling pipe 4, laser welding head 5, moving mechanism and rotating mechanism are all electrically connected to the control terminal.
[0022] In the above scheme, the sliding half-ring 10, the limiting plate 11, the sliding member 12 and the arc plate 13 are replaceable components as a whole, so as to meet the clamping requirements of water pipes and water pipe joints of different diameters. Since the sliding member 12 that makes up the clamp is installed on the adjacent sliding half-ring 10, when replacing, it is only necessary to rotate the sliding half-ring 10 off the adjacent mounting plate 9 and rotate the new sliding half-ring 10 onto the adjacent mounting plate 9.
[0023] Furthermore, refer to Figures 5-7 The moving mechanism includes symmetrically and spaced first fixed posts 14. The number of first fixed posts 14 is the same as the number of sliding members 12 and corresponds one-to-one. The first fixed posts 14 are fixed to the front side of the adjacent sliding half ring 10 near the corresponding sliding member 12. The first fixed posts 14 are slidably connected to the connecting member 15, and a first elastic member, which is a tension spring, is installed between the two. The connecting member 15 is slidably connected to the corresponding sliding member 12. The inclined groove on the limiting plate 11 gradually tilts towards the side closer to the center of the circle where the adjacent sliding half ring 10 is located from front to back. The mounting plate 9 on the fixed block 7 is provided with a driving component that drives the adjacent sliding member 12 to move along the inclined groove on the adjacent limiting plate 11. The driving component is electrically connected to the control terminal.
[0024] In the above scheme, by driving the connector 15 to move forward, the connector 15 drives the slider 12 to slide along the inclined groove on the adjacent limiting plate 11, thereby moving the slider 12 forward and away from the clamped water pipe, so that the water pipe and water pipe joint joint is exposed below the laser welding head 5, which facilitates the welding of the clamped water pipe and water pipe joint joint.
[0025] Furthermore, refer to Figures 5-7 The connector 15 is fixedly connected to a first magnet 16, and the sliding half-ring 10 is fixedly connected to a second magnet 17 that is spaced apart and corresponds one-to-one with the first magnet 16. The first magnet 16 and the corresponding second magnet 17 are magnetically attracted to each other.
[0026] In the above scheme, the magnetic attraction between the first magnet 16 and the second magnet 17 supplements the elastic force of the first elastic element between the first fixed column 14 and the connector 15. Thus, when the sliding element 12 is located at the last side of the inclined groove on the limiting plate 11, it is always affected by the magnetic attraction of the first magnet 16 and the second magnet 17, thereby ensuring that the cylindrical clamp formed by the sliding element 12 has sufficient clamping force on the water pipe and the water pipe joint.
[0027] Furthermore, refer to Figure 5 and Figure 6 The inclined groove on the limiting plate 11 is composed of two interconnected grooves. The angle between the straight line of the groove on the side closer to the sliding half-ring 10 and the vertical plane of the half-ring surface of the sliding half-ring 10 is smaller than the angle between the straight line of the groove on the side farther from the sliding half-ring 10 and the vertical plane of the half-ring surface of the sliding half-ring 10.
[0028] In the above scheme, by limiting the inclination angle of the two grooves forming the inclined slide on the limiting plate 11, the sliding member 12 moves forward mainly by quickly releasing the clamping of the water pipe and water pipe joint, and then moves forward quickly to avoid the aiming position of the laser welding head 5. This reduces the friction between the laser welding head 5 and the water pipe during the movement, thereby reducing the probability of gaps being generated between the water pipe and the water pipe joint due to friction.
[0029] Furthermore, refer to Figures 3-6 The driving component includes an electric push rod 18, which is fixedly connected to a mounting plate 9 near the fixed block 7. The telescopic end of the electric push rod 18 is rotatably connected to a rotating rod 19 via an electric shaft. An arc-shaped baffle 20 is fixedly connected to the rotating rod 19. Figure 3 and Figure 4 The arc-shaped baffle 20 is in a non-working state. Figure 5 The arc-shaped baffle 20 is in the working state, with Figure 5For reference, the left and right ends of the arc-shaped baffle 20 are provided with inclined surfaces. The arc-shaped baffle 20 causes the adjacent connecting piece 15 to move forward by pressing the adjacent connecting piece 15. In the axial direction of the sliding half ring 10 (i.e., the front and back direction), the length of the inclined surface of the arc-shaped baffle 20 is greater than the length of the inclined slide groove on the limiting plate 11. The electric push rod 18 and its electric rotating shaft are electrically connected to the control terminal.
[0030] In the above scheme, the arc-shaped baffle 20 is located above all the connectors 15, and the arc-shaped baffle 20 only presses the connector 15 located on the upper side of the sliding half ring 10. Therefore, the connector 15 only drives the adjacent sliding member 12 away from the joint between the water pipe and the water pipe joint when it rotates to the top of the water pipe.
[0031] Furthermore, refer to Figure 2 , Figure 3 , Figure 8 and Figure 9 The rotating mechanism includes an electrically controlled rotating shaft 21, which is mounted on the operating table 1. A fixed plate 22 is fixedly connected to the electrically controlled rotating shaft 21. Two second fixed columns 23, symmetrically distributed on the left and right sides, are fixedly connected to the fixed plate 22. A swing rod 24 is rotatably connected to the front side of the second fixed column 23, and a second elastic element, which is a tension spring, is installed between the two and is located on the rear side of the swing rod 24. An arc-shaped clamping plate 25 is rotatably connected to the front side of the swing rod 24 to limit its movement. The arc-shaped clamping plate 25 is used to clamp the water pipe joint. The symmetrically distributed second fixed columns 23 are slidably connected to a receiving plate 26. A replaceable gasket is provided on the front side of the receiving plate 26 to adapt to water pipe joints of different shapes and lengths. A steel wire is fixedly connected between the swing rod 24 and the receiving plate 26. The electrically controlled rotating shaft 21 is electrically connected to the control terminal.
[0032] Furthermore, refer to Figure 9 The curved plate 25 is made of elastic material.
[0033] In the above scheme, the rotation axis of the electrically controlled rotating shaft 21 coincides with the rotation axis of the sliding half ring 10 near the fixed block 7. The electrically controlled rotating shaft 21 drives the water pipe joint, water pipe, and the sliding half ring 10 and sliding member 12 to rotate together through the arc-shaped clamping plate 25 on it. Since the power source that drives the water pipe and water pipe joint to rotate is installed on the outside of the mounting plate 9, the technical difficulty of connecting the rotational power on the sliding half ring 10 is avoided.
[0034] The working principle of the above scheme is as follows: According to the dimensions of the water pipes and pipe joints to be assembled and welded, the workers screwed the two sliding half-rings 10, which were equipped with arc plates 13 of the corresponding size, into the two mounting plates 9 respectively. After completing the preparation work, they began to assemble and weld the water pipes and pipe joints.
[0035] When workers begin assembling and welding water pipes and pipe fittings, they first insert the pipe fitting into the water pipe and then place it on the cylindrical axis formed by the arc-shaped plate 13 on the fixed block 7. The workers then initiate the automatic welding program via the control terminal. The control terminal controls the electric moving block 8 to move its mounting plate 9, sliding half-rings 10, limit plate 11, and sliding parts 12 to the left until the two sliding half-rings 10 are in contact. The control terminal then shuts off the electric moving block 8. All the sliding parts 12 together form a cylindrical clamp that holds the water pipe and pipe fitting together. The control terminal then controls the electric slider on the electric slide rail 2 to move the clamp... Platform 6, sliding half-ring 10, sliding component 12, arc plate 13, water pipe and water pipe joint move backward together. During the movement, the rear side of the water pipe joint abuts against the receiving plate 26 and drives the receiving plate 26 to move backward together. The receiving plate 26 pulls two swing rods 24 towards the water pipe joint through the steel wire on it. The second elastic element on the swing rod 24 stretches and stores force. The swing rod 24 drives the arc plate 25 to contact the water pipe joint. The arc plate 25 deforms and clamps the water pipe joint. The water pipe joint is clamped by the two arc plates 25 facing each other. Then the control terminal closes the electric slider on the electric slide rail 2 and starts the drive arm 3 at the same time.
[0036] The control terminal controls the drive arm 3 to move the laser welding head 5 to the junction of the water pipe and the water pipe joint, and starts the cooling pipe 4 and the laser welding head 5. The laser welding head 5 heats and welds the water pipe behind the sliding part 12. The cooling pipe 4 cools the welded position of the water pipe by spraying low-temperature protective gas to the welding area. At the same time, the control terminal starts the electrically controlled rotating shaft 21. The electrically controlled rotating shaft 21 drives the fixed plate 22, the second fixed column 23, the swing rod 24 and the arc-shaped clamping plate 25 to slowly rotate counterclockwise (from the front to the back view). The two arc-shaped clamping plates 25 drive the water pipe and the water pipe joint to rotate counterclockwise together. The water pipe drives the two sliding half rings 10 and their components to rotate counterclockwise relative to the two mounting plates 9 through the cylindrical clamp. At the same time, the control terminal controls the laser welding head 5 to move back and forth, so that the laser welding head 5 welds the junction of the water pipe and the water pipe joint located behind the sliding part 12 along the W trajectory.
[0037] When the welding of the water pipe and water pipe joint located behind the sliding member 12 is completed, preparations begin for welding the joint of the water pipe and water pipe joint covered by the sliding member 12. The control terminal first controls the electric shaft on the telescopic end of the electric push rod 18 to drive the rotating rod 19 and the arc-shaped baffle 20 to rotate until the arc-shaped baffle 20 rotates to... Figure 6At the indicated position, the control terminal then closes the electric shaft on the telescopic end of the electric push rod 18 and extends the telescopic end of the electric push rod 18 forward. The telescopic end of the electric push rod 18 drives the rotating rod 19 and the arc-shaped baffle 20 to move forward together. The arc-shaped baffle 20 contacts the adjacent connecting member 15 and squeezes the adjacent connecting member 15 to move forward. The connecting member 15 slides relative to the first fixed post 14, and the first elastic element between them is stretched and stores force. The connecting member 15 drives the adjacent sliding member 12 to move forward together. The sliding member 12 moves along the adjacent limit The inclined groove on the position plate 11 slides, causing the adjacent sliding member 12 to move the arc plate 13 forward and upward away from the water pipe, and making room for the laser welding head 5 to prepare for welding. At this time, the water pipe is mainly clamped by other arc plates 13. When the sliding member 12 moves to the front end of the inclined groove on the adjacent limit plate 11, the control terminal closes the electric push rod 18 and controls the drive arm 3 to drive the laser welding head 5 to continue to move back and forth along the W path, covering the area covered by the arc plate 13 before the movement, and welding is performed on the position clamped by the arc plate 13.
[0038] During the welding process at the junction of the water pipe and the water pipe joint clamped by the arc plate 13, the two arc-shaped clamping plates 25 continue to drive the water pipe and the water pipe joint to rotate counterclockwise together. The water pipe, through the cylindrical clamp, drives the two sliding half-rings 10 and their components to rotate counterclockwise together. At this time, when the upper connecting piece 15 rotates to the left inclined surface of the arc baffle 20, the connecting piece 15, under the elastic force of its first elastic element, drives the sliding piece 12 to gradually return to its original position along the left inclined surface of the arc baffle 20. The arc plate 13 then presses the junction of the water pipe and the water pipe joint again, separating it from other unmoved arc plates. The shaped plate 13 clamps the water pipe. As the connector 15 closest to the arc-shaped baffle 20 on the right rotates counterclockwise, the connector 15 contacts the inclined surface on the right side of the arc-shaped baffle 20 and is gradually moved forward by the pressure of the arc-shaped baffle 20. The connector 15 drives the adjacent sliding member 12 and the arc-shaped plate 13 to move forward and upward, stopping the clamping of the water pipe and making room for the laser welding head 5 to weld. The sliding member 12, the arc-shaped plate 13 and the connector 15 on the two sliding half-rings 10 continuously repeat the above process until the water pipe and the water pipe joint at the position clamped by the arc-shaped plate 13 are welded.
[0039] After the water pipe and water pipe joint welding process is completed, the control terminal shuts off the cooling pipe 4 and the laser welding head 5, and controls the drive arm 3 to drive the laser welding head 5 to reset. The electric push rod 18 drives the rotating rod 19 and the arc-shaped baffle 20 to move backward. Under the action of the first elastic element on the connector 15, the adjacent sliding member 12 and the adjacent arc-shaped plate 13 move backward to reset. When the telescopic end of the electric push rod 18 is fully reset, the control terminal controls the electric rotating shaft on the electric push rod 18 to drive the rotating rod 19 and the arc-shaped baffle 20 to swing and reset. Then, the control terminal causes the electrically controlled rotating shaft 21 to drive the fixed plate 22, the second fixed column 23, the swing rod 24 and the arc-shaped clamping plate 25 to rotate to the desired position. Figure 3The position is shown, and the electric rotating shaft 21 is turned off. At this time, the two sliding half-rings 10 are located on the left and right sides respectively. The control terminal controls the electric slider on the electric slide rail 2 to drive the clamping platform 6 and its components to move forward and reset. The water pipe joint is no longer in contact with the receiving plate 26. The two swing rods 24 swing and reset under the elastic force of the second elastic element on them. The two swing rods 24 pull the receiving plate 26 to move and reset together through the steel wire. Finally, the staff controls the electric moving block 8 through the control terminal to drive the mounting plate 9, sliding half-rings 10, limit plate 11 and sliding element 12 on it to move to the right and reset, so that all sliding elements 12 release the clamping of the water pipe. The staff removes the water pipe and continues to weld other water pipes and water pipe joints according to the above steps.
[0040] Example 2, based on Example 1, also has the function of enhancing the cooling effect on the water pipe and the water pipe joint.
[0041] Furthermore, refer to Figure 6 and Figure 7 The curved plate 13 is provided with spaced ventilation slots 131.
[0042] Furthermore, refer to Figure 2 and Figure 3 The angle between the axis of the cooling pipe 4 air outlet and the axis of the electric control rotating shaft 21 is less than 45°, and the cooling pipe 4 air outlet is located above the sliding semi-ring 10.
[0043] In the above scheme, by limiting the angle of the low-temperature protective gas blown out by the cooling pipe 4, the low-temperature protective gas can more easily enter the ventilation groove 131 on the arc plate 13 that is in contact with the water pipe again. Thus, the water pipe that has just finished the welding process is cooled by the ventilation groove 131 and the arc plate 13. Moreover, because the welded position is cooled by the arc plate 13 and squeezed by the arc plate 13 at the same time, the water pipe is more firmly bonded to the water pipe joint at the laser-heated position, thereby strengthening the welding effect between the water pipe and the water pipe joint.
[0044] Furthermore, refer to Figure 4 and Figure 5 The mounting plate 9 is fixedly connected to the third magnet 27, and the sliding half ring 10 is fixedly connected to the fourth magnet 28. The third magnet 27 and the fourth magnet 28 are magnetically attracted to each other.
[0045] In the above scheme, by adding a third magnet 27 and a fourth magnet 28, it is ensured that when the two sliding half-rings 10 are separated from each other, that is, during the process of placing the water pipe and water pipe joint or removing the welded water pipe and water pipe joint, the relative position between the sliding half-ring 10 and the adjacent mounting plate 9 remains unchanged, reducing the possibility of the sliding half-ring 10 sliding and misaligning due to accidental contact, thereby increasing the stability of the device operation.
[0046] Those skilled in the art should understand that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.
Claims
1. A multi-station welding device for water pipe joints, characterized in that: The system includes an operating platform (1), on which an electric slide rail (2), a drive arm (3), and a cooling pipe (4) are mounted. A laser welding head (5) is mounted on the drive arm (3). A clamping platform (6) is fixedly connected to an electric slider on the electric slide rail (2). A fixing block (7) is fixedly connected to the clamping platform (6). An electric moving block (8) is slidably connected to the clamping platform (6). Mounting plates (9) are fixedly connected to opposite sides of both the fixing block (7) and the electric moving block (8). A sliding half-ring (10) is rotatably connected to the mounting plate (9). Several limiting plates (11) are fixedly connected to the sliding half-ring (10). When the sliding half ring (10) is in contact, all the limiting plates (11) are circumferentially spaced. The limiting plates (11) are provided with inclined sliding grooves. The limiting plates (11) are slidably connected to the sliding members (12) through the inclined sliding grooves. The sliding members (12) are fixed with an arc plate (13) on the side of the circle near the center of the adjacent sliding half ring (10). All the arc plates (13) are used to clamp the water pipe and the water pipe joint. The two sliding half rings (10) are provided with a moving mechanism to drive the adjacent sliding members (12) away from the water pipe. The operating table (1) is provided with a rotating mechanism to drive the water pipe joint to rotate.
2. A multi-station welding device for water pipe joints according to claim 1, characterized in that: The moving mechanism includes symmetrically and spaced first fixed columns (14), the number of which is the same as the number of sliding members (12) and corresponds one-to-one. The first fixed columns (14) are fixed to the adjacent sliding half ring (10) near the corresponding sliding member (12). The first fixed columns (14) are slidably connected to a connecting member (15), and a first elastic member is installed between them. The connecting member (15) is slidably connected to the corresponding sliding member (12). The inclined groove on the limiting plate (11) is inclined from the side away from the adjacent sliding half ring (10) to the side near the center of the circle where the adjacent sliding half ring (10) is located. The mounting plate (9) on the fixed block (7) is provided with a driving component that drives the adjacent sliding member (12) to move along the inclined groove on the adjacent limiting plate (11).
3. A multi-station welding device for water pipe joints according to claim 2, characterized in that: The connector (15) is fixedly connected to a first magnet (16), and the sliding half-ring (10) is fixedly connected to a second magnet (17) that is spaced apart and corresponds one-to-one with the first magnet (16). The first magnet (16) and the corresponding second magnet (17) are magnetically attracted to each other.
4. A multi-station welding device for water pipe joints according to claim 2, characterized in that: The inclined groove on the limiting plate (11) is composed of two interconnected grooves, wherein the angle between the straight line of the groove on the side closer to the sliding half ring (10) and the vertical plane of the half ring surface of the sliding half ring (10) is smaller than the angle between the straight line of the groove on the side farther from the sliding half ring (10) and the vertical plane of the half ring surface of the sliding half ring (10).
5. A multi-station welding device for water pipe joints according to claim 2, characterized in that: The driving component includes an electric push rod (18), which is fixed to the mounting plate (9) near the fixed block (7). The telescopic end of the electric push rod (18) is rotatably connected to a rotating rod (19) via an electric rotating shaft. The rotating rod (19) is fixed to an arc-shaped baffle (20). Both ends of the arc-shaped baffle (20) are provided with inclined surfaces. The arc-shaped baffle (20) causes the adjacent connecting member (15) to move away from the adjacent sliding half ring (10) by pressing the adjacent connecting member (15). In the axial direction of the sliding half ring (10), the length of the inclined surface of the arc-shaped baffle (20) is greater than the length of the inclined groove on the limiting plate (11).
6. A multi-station welding device for water pipe joints according to claim 1, characterized in that: The rotating mechanism includes an electrically controlled rotating shaft (21), which is mounted on the operating table (1). The electrically controlled rotating shaft (21) is fixedly connected to a fixed plate (22), and the fixed plate (22) is fixedly connected to symmetrically distributed second fixed columns (23). The second fixed columns (23) are rotatably connected to a swing rod (24), and a second elastic element is installed between them. The swing rod (24) is rotatably connected to an arc-shaped clamping plate (25), which is used to clamp the water pipe joint. The symmetrically distributed second fixed columns (23) are slidably connected to a receiving plate (26), and a steel wire is fixedly connected between the swing rod (24) and the receiving plate (26).
7. A multi-station welding device for water pipe joints according to claim 6, characterized in that: The arc-shaped card plate (25) is made of elastic material.
8. A multi-station welding device for water pipe joints according to claim 1, characterized in that: The arc-shaped plate (13) is provided with ventilation slots (131) distributed at intervals.
9. A multi-station welding device for water pipe joints according to claim 1, characterized in that: The angle between the axis of the cooling pipe (4) at the air outlet and the axis of the electrically controlled rotating shaft (21) is less than 45°, and the air outlet of the cooling pipe (4) is located above the sliding semi-ring (10).
10. A multi-station welding device for water pipe joints according to claim 1, characterized in that: The mounting plate (9) is fixedly connected to a third magnet (27), and the sliding half-ring (10) is fixedly connected to a fourth magnet (28). The third magnet (27) and the fourth magnet (28) are magnetically attracted to each other.