Cooling pipe welding device

Abstract

The invention discloses a cooling pipe welding device and relates to the technical field of welding, the cooling pipe welding device comprises a working table and a welding mechanism, a fixing plate is connected to the front side of a machining table, a first three-jaw chuck is rotatably connected to the fixing plate, a moving groove is formed in the front side of the machining table, and a moving plate is slidably connected into the moving groove; a second three-jaw chuck is rotationally connected to the movable plate, a first air cylinder is installed at the side end of the machining table, the movable end of the first air cylinder is connected with the movable plate, and the welding mechanism is installed on the machining table and used for welding the cooling pipe. During welding, the main pipe and the spiral coil pipe are controlled to rotate at a constant speed together and are associated with the constant-speed movement of the welding gun, so that the muzzle of the welding gun is always aligned with the contact seam of the main pipe and the spiral coil pipe for welding, manual welding is replaced, the labor intensity is reduced, the welding continuity is ensured, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a cooling pipe welding device. Background Art

[0002] The cooling pipe is made of metal pipe and installed in the liquid. It is an important part of the power equipment. The exhaust gas generated by the power system can reduce the temperature by passing through the cooling pipe.

[0003] An existing cooling pipe is as shown in the attached Figure 7 As shown, it is composed of a main pipe 4 and a spiral coil 5. During production and processing, the spiral coil 5 needs to be welded to the outer pipe wall of the main pipe 4. The existing processing methods mostly use manual handheld welding guns for welding. Since the welding path of the cooling pipe is spiral, it is necessary not only to adjust the welding gun angle at all times, but also to continuously move and flip the weldment along the welding path, which makes the entire welding operation more troublesome, resulting in low welding efficiency, and the inability to ensure the continuity of welding, affecting the welding quality. Therefore, a cooling pipe welding device is proposed. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the prior art and to propose a cooling pipe welding device.

[0005] A cooling pipe welding device comprises a workbench and a welding mechanism, wherein a fixed plate is connected to the front side of the workbench, a first three-jaw chuck is rotatably connected to the fixed plate, a movable groove is provided on the front side of the workbench, a movable plate is slidably connected in the movable groove, a second three-jaw chuck is rotatably connected to the movable plate, a first cylinder is installed at the side end of the workbench, a movable end of the first cylinder is connected to the movable plate, the welding mechanism is installed at the workbench and is used for welding cooling pipes, and an adjustment mechanism is provided at one end of the workbench away from the first cylinder for adjusting the transmission ratio.

[0006] Preferably, the welding mechanism includes a motor and a welding gun, two parallel slide rails are installed on the processing table, a slider is slidably connected to the two slide rails, an L-shaped mounting frame is connected to the slider, a second cylinder is installed on the mounting frame, a connecting block is connected to the movable end of the second cylinder, the welding gun is rotatably connected to the connecting block, two bearing seats are connected to the processing table, the two bearing seats are rotatably connected to a threaded shaft, the threaded shaft is threadedly connected to the slider, the motor is installed on the processing table, and the output shaft of the motor is coaxially connected to the threaded shaft.

[0007] Preferably, the adjusting mechanism comprises two mounting plates and a rotating rod with a triangular cross-section, the two mounting plates are mounted on the processing table and are located near one end of the fixed plate, each of the mounting plates is rotatably connected with a rotating sleeve, the two rotating sleeves are slidably connected with the rotating rod, the end of the threaded shaft away from the motor is coaxially connected with a bevel gear, the rotating sleeve located at the upper end is coaxially connected with the bevel gear, and the two bevel gears are meshed with each other, the processing table is rotatably connected with a main shaft at one end close to the mounting plate, a large friction wheel is coaxially connected on the main shaft, a small friction wheel is coaxially connected on the rotating rod, the small friction wheel and the large friction wheel are connected through friction transmission, the fixed plate is rotatably connected with a rotating shaft, the rotating shaft is coaxially connected with a gear, the first three-jaw chuck is coaxially connected with a gear ring, the gear is meshed with the gear ring, the main shaft and the rotating shaft are coaxially connected with a transmission wheel, and the two transmission wheels are jointly sleeved with a transmission belt.

[0008] Preferably, two lifting rods are connected to the mounting plate at the upper end, a lifting plate is slidably connected to the two lifting rods, a turntable is rotatably connected to the lifting plate, the rotating rod is coaxially connected to the turntable, a threaded rod is rotatably connected to the mounting plate, the threaded rod is threadedly connected to the lifting plate, and a rocker is coaxially connected to the upper end of the threaded rod.

[0009] Preferably, a multi-section adjusting rod is connected to the side of the connecting block, the other end of the multi-section adjusting rod is connected to a detection box, a slide groove is provided at one end of the detection box close to the welding gun, a detection block is slidably connected in the slide groove, an outer end of the detection block is rotatably connected to a roller through a pin shaft, one end of the detection block located in the slide groove is connected to a spring, and the other end of the spring is connected to the inner wall of the slide groove.

[0010] Preferably, a conductive strip is provided at one end of the detection block close to the spring, and a pair of connecting plates are embedded in the upper and lower groove walls of the detection box located in the slide groove, and the pair of connecting plates are electrically connected to the control circuit of the welding gun.

[0011] Preferably, the first three-jaw chuck is coaxially arranged with the second three-jaw chuck.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] 1. The present invention is provided with a welding mechanism, which controls the main pipe to rotate at a uniform speed together with the spiral coil during welding, and is associated with the uniform speed movement of the welding gun, so that the muzzle of the welding gun is always aligned with the contact seam between the main pipe and the spiral coil for welding, replacing manual welding, reducing labor intensity, ensuring welding continuity, and improving welding quality.

[0014] 2. During the welding process, the present invention is provided with a detection box. When the movement of the welding gun does not match the rotation frequency of the main pipe, the spiral coil will squeeze the roller and the detection block to produce changes, so that the conductive strip is separated from the power plate, and the welding gun will be powered off to stop welding, thereby avoiding the occurrence of wrong welding and further ensuring the welding quality.

[0015] 3. The adjustment mechanism in the present invention can rotate the rocker to change the transmission ratio of the small friction wheel and the large friction wheel, and control the ratio of the moving distance of the welding gun to the number of rotations of the first three-jaw chuck. It can not only match and adjust the movement of the welding gun and the rotation frequency of the main pipe when a welding error is detected, so that the muzzle of the welding gun is always aligned with the contact seam, but also can adjust the spiral coils with different numbers of spiral turns when welding cooling pipes of different models, thereby increasing the scope of application of the welding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the present invention from another angle.

[0018] Figure 3 for Figure 2 Enlarged schematic diagram at point A in the middle.

[0019] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0020] Figure 5 It is a structural cross-sectional view of the detection box part in the present invention.

[0021] Figure 6 It is a structural schematic diagram of the fixed plate part in the present invention.

[0022] Figure 7 It is a schematic diagram of the structure of the cooling tube in the present invention.

[0023] Figure 8 It is a schematic diagram of the state of the welding device of the present invention processing a cooling pipe.

[0024] In the figure: 1 processing table, 11 fixed plate, 111 first three-jaw chuck, 12 moving plate, 121 second three-jaw chuck, 13 moving groove, 14 support leg, 15 first cylinder, 2 welding mechanism, 21 slide rail, 211 slider, 212 mounting frame, 22 motor, 221 bearing seat, 222 threaded shaft, 23 second cylinder, 24 connecting block, 25 welding gun, 26 multi-section adjusting rod, 27 detection box, 271 slide groove, 28 detection block, 281 roller, 282 spring, 29 conductive strip, 291 connecting plate, 3 adjusting mechanism, 31 mounting plate, 311 rotating sleeve, 32 rotating rod, 321 small friction wheel, 33 main shaft, 331 large friction wheel, 34 bevel gear, 35 lifting rod, 351 lifting plate, 352 turntable, 36 threaded rod, 361 rocker, 37 rotating shaft, 371 gear, 372 gear ring, 38 transmission wheel, 4 main pipe, 5 spiral coil. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0026] Reference Figure 1-8 As shown, a cooling pipe welding device includes a processing table 1 and a welding mechanism 2, wherein a fixed plate 11 is connected to the front side of the processing table 1, and a first three-jaw chuck 111 is rotatably connected to the fixed plate 11, a moving groove 13 is opened on the front side of the processing table 1, a moving plate 12 is slidably connected in the moving groove 13, and a second three-jaw chuck 121 is rotatably connected to the moving plate 12, a first cylinder 15 is installed at the side end of the processing table 1, and the movable end of the first cylinder 15 is connected to the moving plate 12, the welding mechanism 2 is installed on the processing table 1 and is used for welding the cooling pipe, and an adjustment mechanism 3 is provided at the end of the processing table 1 away from the first cylinder 15 for adjusting the transmission ratio.

[0027] In this embodiment, the welding mechanism 2 includes a motor 22 and a welding gun 25. Two parallel slide rails 21 are installed on the processing table 1. A slider 211 is slidably connected to the two slide rails 21. An L-shaped mounting frame 212 is connected to the slider 211. A second cylinder 23 is installed on the mounting frame 212. The movable end of the second cylinder 23 is connected to a connecting block 24. The welding gun 25 is rotatably connected to the connecting block 24. A damping is provided at the rotating connection of the welding gun 25 so that the welding gun 25 can hover at any angle. Two bearing seats 221 are connected to the processing table 1. The two bearing seats 221 are rotatably connected to a threaded shaft 222. The threaded shaft 222 is threadedly connected to the slider 211. The motor 22 is installed on the processing table 1, and the output shaft of the motor 22 is coaxially connected to the threaded shaft 222.

[0028] In this embodiment, the adjustment mechanism 3 includes two mounting plates 31 and a rotating rod 32 with a triangular cross-section. The two mounting plates 31 are mounted on the processing table 1 and are located near one end of the fixed plate 11. A rotating sleeve 311 is rotatably connected to each mounting plate 31. Both rotating sleeves 311 are slidably connected to the rotating rod 32. The end of the threaded shaft 222 away from the motor 22 is coaxially connected to a bevel gear 34. The rotating sleeve 311 at the upper end is coaxially connected to the bevel gear 34. The two bevel gears 34 are meshed with each other. The end of the processing table 1 near the mounting plate 31 is rotated A main shaft 33 is rotatably connected to the main shaft 33, a large friction wheel 331 is coaxially connected to the main shaft 33, a small friction wheel 321 is coaxially connected to the rotating rod 32, the small friction wheel 321 and the large friction wheel 331 are connected through friction transmission, a rotating shaft 37 is rotatably connected to the fixed plate 11, a gear 371 is coaxially connected to the rotating shaft 37, a gear ring 372 is coaxially connected to the first three-jaw chuck 111, the gear 371 is meshed with the gear ring 372, a transmission wheel 38 is coaxially connected to both the main shaft 33 and the rotating shaft 37, and a transmission belt is commonly provided on the two transmission wheels 38.

[0029] In this embodiment, two lifting rods 35 are connected to the mounting plate 31 at the upper end, and a lifting plate 351 is slidably connected to the two lifting rods 35. A turntable 352 is rotatably connected to the lifting plate 351. The rotating rod 32 is coaxially connected to the turntable 352. A threaded rod 36 is rotatably connected to the mounting plate 31. The threaded rod 36 is connected to the lifting plate 351 through threads. A rocker 361 is coaxially connected to the upper end of the threaded rod 36. The lifting plate 351 is moved through threads to change the distance between the centers of the small friction wheel 321 and the large friction wheel 331 on the rotating rod 32, thereby changing the transmission ratio of the small friction wheel 321 to the large friction wheel 331.

[0030] In this embodiment, a multi-section adjusting rod 26 is connected to the side of the connecting block 24, and a detection box 27 is connected to the other end of the multi-section adjusting rod 26. A slide groove 271 is provided at one end of the detection box 27 close to the welding gun 25. A detection block 28 is slidably connected in the slide groove 271, and a roller 281 is rotatably connected to the outer end of the detection block 28 through a pin shaft. A spring 282 is connected to one end of the detection block 28 located in the slide groove 271, and the other end of the spring 282 is connected to the inner wall of the slide groove 271.

[0031] In this embodiment, a conductive strip 29 is provided at one end of the detection block 28 close to the spring 282, and a pair of connecting plates 291 are embedded in the upper and lower groove walls of the detection box 27 located in the slide groove 271. The pair of connecting plates 291 are electrically connected to the control circuit of the welding gun 25. When there is no external pressure on the detection block 28, the conductive strip 29 is not in contact with the connecting plates 291, and the welding gun 25 is in a power-off and non-working state.

[0032] In this embodiment, the first three-jaw chuck 111 and the second three-jaw chuck 121 are coaxially arranged, and the first three-jaw chuck 111 and the second three-jaw chuck 121 jointly clamp the main pipe 4 in an internal support manner.

[0033] The working process and principle of the present invention are as follows:

[0034] When in use, first insert the spiral coil 5 into the main pipe 4, then place the two ends of the main pipe 4 on the first three-jaw chuck 11 and the second three-jaw chuck 121 respectively to clamp and fix them, then adjust the height of the welding gun 25 by the second cylinder 23, and adjust the angle of the welding gun 25 to align it with the contact seam between the main pipe 4 and the spiral coil 5, then move the detection box 27 close to the welding gun 25, so that the detection block 28 is located on the other side of the threaded coil 5 where the welding gun 25 is located, and let the roller 281 abut against the threaded coil 5, so as to produce a certain compression on the spring 282, so that the conductive strip 29 on the detection block 28 is in contact with the power strip 291, and then turn on the welding gun 25 first. The main pipe 4 and the spiral coil 5 are welded to connect the two as one, and then the motor 22 is turned on. The motor 22 will drive the slider 211 to move at a uniform speed along the direction of the slide rail 21. At the same time, through the meshing of the bevel gear 34, the friction transmission of the small friction wheel 321 and the large friction wheel 331, the belt transmission of the transmission wheel 38, and the meshing transmission of the gear 371 and the ring gear 372, the main pipe 4 and the spiral coil 5 are driven to rotate at a uniform speed. As the welding gun 25 moves, the muzzle of the welding gun 5 is always aimed at the contact seam between the main pipe 4 and the spiral coil 5 for welding, which replaces manual welding, reduces the labor intensity, ensures the continuity of welding, and improves the welding quality.

[0035] During the welding process, when the movement of the welding gun 25 does not match the rotation frequency of the main pipe 4, the squeezing of the spiral coil 5 on the roller 281 and the detection block 28 will change. When the welding gun 25 is too close to the contact seam, the distance between the spiral coil 5 and the detection box 27 will increase, and the roller 281 and the detection block 28 will slide outward under the action of the spring 282, so that the conductive strip 29 is separated from the power strip 291, and the welding gun 25 will be powered off and stop welding; when the welding gun 25 is far away from the contact seam, the distance between the spiral coil 5 and the detection box 27 will decrease, and the detection block 28 will further The spring 282 is squeezed, and the conductive strip 29 is also separated from the power strip 291, and the welding gun 25 is powered off and stops welding; at this time, the staff can rotate the rocker 371 according to the positional relationship between the welding gun 25 and the threaded coil 5, adjust the height of the lifting plate 351, and change the distance between the center of the small friction wheel 321 and the center of the large friction wheel 331, so as to change the transmission ratio of the small friction wheel 321 and the large friction wheel 331, so that the movement of the welding gun 25 matches the rotation frequency of the main pipe 4, and the muzzle of the welding gun 25 is always aligned with the contact seam, so as to further ensure the welding quality.

[0036] At the same time, the welding device can weld cooling tubes of different types. For spiral coils 5 with different numbers of spiral turns, the crank 361 can be rotated to change the transmission ratio of the small friction wheel 321 and the large friction wheel 331, and the ratio of the moving distance of the welding gun 25 to the number of rotations of the first three-jaw chuck 111 can be controlled to be suitable for cooling tubes of different types, thereby increasing the application scope of the welding device and meeting actual production needs.

[0037] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the above disclosed embodiments are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A cooling pipe welding device, characterized in that: The invention comprises a processing table (1) and a welding mechanism (2), wherein a fixed plate (11) is connected to the front side of the processing table (1), a first three-jaw chuck (111) is rotatably connected to the fixed plate (11), a moving groove (13) is provided on the front side of the processing table (1), a moving plate (12) is slidably connected in the moving groove (13), a second three-jaw chuck (121) is rotatably connected to the moving plate (12), a first cylinder (15) is installed at the side end of the processing table (1), a movable end of the first cylinder (15) is connected to the moving plate (12), the welding mechanism (2) is installed on the processing table (1) and is used for welding the cooling pipe, and an adjustment mechanism (3) is provided at one end of the processing table (1) away from the first cylinder (15) for adjusting the transmission ratio.

2. A cooling pipe welding device according to claim 1, characterized in that: The welding mechanism (2) comprises a motor (22) and a welding gun (25); two parallel slide rails (21) are installed on the processing table (1); a slider (211) is slidably connected to the two slide rails (21); an L-shaped mounting frame (212) is connected to the slider (211); a second cylinder (23) is installed on the mounting frame (212); a connecting block (24) is connected to the movable end of the second cylinder (23); the welding gun (25) is rotatably connected to the connecting block (24); two bearing seats (221) are connected to the two bearing seats (221) and are rotatably connected to a threaded shaft (222); the threaded shaft (222) is threadedly connected to the slider (211); the motor (22) is installed on the processing table (1); and an output shaft of the motor (22) is coaxially connected to the threaded shaft (222).

3. A cooling pipe welding device according to claim 1, characterized in that: The adjustment mechanism (3) comprises two mounting plates (31) and a rotating rod (32) having a triangular cross section. The two mounting plates (31) are mounted on the processing table (1) and are located near one end of the fixed plate (11). A rotating sleeve (311) is rotatably connected to each mounting plate (31). Both rotating sleeves (311) are slidably connected to the rotating rod (32). An end of the threaded shaft (222) away from the motor (22) is coaxially connected to a bevel gear (34). The rotating sleeve (311) located at the upper end is coaxially connected to the bevel gear (34). The two bevel gears (34) are meshed with each other. The end of the processing table (1) near the mounting plate (31) is rotatably connected to A main shaft (33), a large friction wheel (331) is coaxially connected to the main shaft (33), a small friction wheel (321) is coaxially connected to the rotating rod (32), the small friction wheel (321) and the large friction wheel (331) are connected via friction transmission, a rotating shaft (37) is rotatably connected to the fixed plate (11), a gear (371) is coaxially connected to the rotating shaft (37), a gear ring (372) is coaxially connected to the first three-jaw chuck (111), the gear (371) and the gear ring (372) are meshed, a transmission wheel (38) is coaxially connected to both the main shaft (33) and the rotating shaft (37), and a transmission belt is commonly sleeved on the two transmission wheels (38).

4. A cooling pipe welding device according to claim 3, characterized in that: The mounting plate (31) at the upper end is connected to two lifting rods (35), a lifting plate (351) is slidably connected to the two lifting rods (35), a turntable (352) is rotatably connected to the lifting plate (351), the rotating rod (32) is coaxially connected to the turntable (352), a threaded rod (36) is rotatably connected to the mounting plate (31), the threaded rod (36) is threadedly connected to the lifting plate (351), and a rocker (361) is coaxially connected to the upper end of the threaded rod (36).

5. A cooling pipe welding device according to claim 2, characterized in that: A multi-section adjusting rod (26) is connected to the side of the connecting block (24); the other end of the multi-section adjusting rod (26) is connected to a detection box (27); a slide groove (271) is provided at one end of the detection box (27) close to the welding gun (25); a detection block (28) is slidably connected in the slide groove (271); an outer end of the detection block (28) is rotatably connected to a roller (281) via a pin shaft; one end of the detection block (28) located in the slide groove (271) is connected to a spring (282); the other end of the spring (282) is connected to the inner wall of the slide groove (271).

6. A cooling pipe welding device according to claim 5, characterized in that: A conductive strip (29) is provided at one end of the detection block (28) close to the spring (282), and a pair of connecting plates (291) are embedded in the upper and lower groove walls of the detection box (27) located in the slide groove (271), and the pair of connecting plates (291) are electrically connected to the control circuit of the welding gun (25).

7. A cooling pipe welding device according to claim 1, characterized in that: The first three-jaw chuck (111) and the second three-jaw chuck (121) are coaxially arranged.

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