Clean welding device for Libihi pipe

Abstract

The utility model relates to the technical field of Libih pipe welding, in particular to a Libih pipe clean welding device which is characterized in that argon is introduced into a pipe fitting through a pipe clamping mechanism, pressurizing protection is carried out on welding operation, the problems of welding bead slagging and heat affected zone bluing under the complex jacket bent pipe condition are solved, meanwhile, the pipe fitting is driven to rotate through a positioning air pipe, and the welding quality is improved. Girth welding operation can be automatically completed, and the use practicability is improved; comprising a workbench, a pipe clamping mechanism and a welding mechanism, the pipe clamping mechanism is fixedly installed on the workbench, and the welding mechanism is fixedly installed on the workbench; the pipe clamping mechanism comprises a pipe clamping support, a first air cylinder, a hoisting rod, a pressing rod, a pressing head, a bearing seat, a positioning air pipe, a driven wheel, a communicating pipe, a quick plug connector, a motor mounting seat, a rotating motor and a driving belt wheel, the pipe clamping support is fixedly mounted at the top end of the workbench, the first air cylinder is fixedly mounted at the top end of the pipe clamping support, and the hoisting rod is fixedly mounted at the output end of the bottom end of the first air cylinder; the pressing rod is rotationally inserted into the bottom end of the hoisting rod.

Description

Technical Field

[0001] The utility model relates to the technical field of Liebig tube welding, in particular to a clean welding device for Liebig tubes. Background Art

[0002] The welding requirements for equipment pipelines used in the manufacture of electronic-grade polysilicon are extremely high. Welds with slag will continuously release impurities, resulting in low purity of the final product. Inert gas protection plays an important role in the formation of welds. Conventional welding devices cannot perform inert gas stamping inside the pipeline when in use, and cannot protect the welding points during the welding process, resulting in discoloration of the inner wall of the pipeline, resulting in poor practicality. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a Liebig tube clean welding device that introduces argon gas into the pipe through a pipe clamping mechanism to perform pressurized protection on the welding operation, solves the problems of slag generation in the weld and bluing in the heat affected zone under complex jacket bending conditions, and drives the pipe to rotate by positioning the gas pipe, thereby automatically completing the circumferential seam welding operation and improving the practicality of use.

[0004] The utility model discloses a Liebig tube clean welding device, comprising a workbench, a tube clamping mechanism and a welding mechanism, wherein the tube clamping mechanism is fixedly mounted on the workbench, and the welding mechanism is fixedly mounted on the workbench;

[0005] The pipe clamping mechanism includes a pipe clamping bracket, a first cylinder, a hoisting rod, a pressure rod, a pressure head, a bearing seat, a positioning air pipe, a driven wheel, a connecting pipe, a quick connector, a motor mounting seat, a rotating motor and a driving pulley. The pipe clamping bracket is fixedly mounted on the top of the workbench, the first cylinder is fixedly mounted on the top of the pipe clamping bracket, the bottom output end of the first cylinder is fixedly mounted with a hoisting rod, the pressure rod is rotatably inserted at the bottom end of the hoisting rod, the bottom end of the pressure rod is fixedly mounted with a pressure head, the bearing seat is fixedly mounted on the workbench, the bearing seat is concentric with the pressure head, the positioning air pipe It is rotatably inserted in the bearing seat, and an air outlet is provided at the top of the positioning air pipe. A driven wheel is fastened on the positioning air pipe, and the driven wheel is arranged on the lower side of the workbench. The connecting pipe is rotatably installed at the bottom end of the positioning air pipe, and the connecting pipe and the positioning air pipe are connected to each other. A quick-connect connector is fixedly installed at the bottom end of the connecting pipe. The motor mounting seat is fixedly installed at the bottom end of the workbench, and the rotating motor is fixedly installed at the bottom end of the motor mounting seat. A driving pulley is fixedly installed at the output end of the rotating motor, and a belt is used to transmit the power between the driving pulley and the driven wheel.

[0006] The utility model discloses a Liebig tube clean welding device, the welding mechanism comprises an adjusting bracket, a guide rail, a lifting slide, a slider, a driving motor, a gear, a rack, a supporting plate and a welding gun, the adjusting bracket is fixedly mounted on a workbench, two sets of guide rails are symmetrically fixedly mounted on both side ends of the adjusting bracket, two sets of sliders are symmetrically fixedly mounted on the lifting slide, the two sets of sliders are respectively slidably sleeved on the two sets of guide rails, the driving motor is fixedly mounted on the lifting slide, a gear is fixedly mounted on the output end of the driving motor, the gear is rotatably inserted on the lifting slide, the rack is fixedly mounted on the adjusting bracket, the gear and the rack are meshed with each other, the supporting plate is fixedly mounted on the lifting slide, an adjusting component is arranged on the supporting plate, and the welding gun is fixedly mounted on the adjusting component.

[0007] The utility model discloses a Liebig tube clean welding device, wherein the adjusting component comprises an adjusting cylinder, a linkage block and a welding gun fixing block, the adjusting cylinder is fixedly mounted on a supporting plate, the linkage block is tightly connected to the output end of the adjusting cylinder, the welding gun fixing block is tightly connected to the linkage block, the welding gun fixing block is slidably mounted on the top end of the supporting plate, and the welding gun is fixedly inserted on the welding gun fixing block.

[0008] The utility model discloses a Liebig tube clean welding device, which also comprises a guide piece and a guide bar. The guide piece is tightly connected with the hanging rod, the guide bar is fixedly installed on the tube clamping bracket, and the guide piece is slidably clamped on the guide bar.

[0009] The utility model provides a Liebig tube clean welding device, which also comprises a limiting block, and the limiting block is fixedly installed at the bottom end of the guide bar.

[0010] The utility model discloses a Liebig tube clean welding device, wherein the top end of the positioning air tube is arranged as a ball head.

[0011] The utility model discloses a Liebig tube clean welding device, wherein four groups of anti-skid pads are arranged on the four corners of the bottom end of the workbench.

[0012] The utility model discloses a Liebig tube clean welding device, wherein the rack and the two groups of guide rails are parallel to each other.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] Put the pipe section to be welded on the positioning air pipe, then dock the other pipe section on the pipe, and then start the first cylinder. The output end of the first cylinder controls the lifting rod to press down, and then the lifting rod drives the pressure rod and the pressure head to move down until the bottom end of the pressure head is close to the top of the pipe, and the two sets of pipes are pressed tightly. Then the welding mechanism is used to weld the seam. During the welding process, the external argon gas is transported into the pipe through the quick-plug joint to solve the problems of slag generation and bluing of the heat-affected zone in the case of complex jacket bending. In addition, during the welding process, the rotating motor is started, and the output end of the rotating motor drives the active pulley to rotate, and then the rotating active pulley passes through The belt drive drives the driven wheel to rotate, and then the rotating driven wheel drives the positioning air pipe to rotate. The positioning air pipe is rotatably connected to the connecting pipe. Therefore, when the positioning air pipe rotates, the connecting pipe can rotate independently of the positioning air pipe. Then the pipe fitting is driven to rotate through the positioning air pipe. When the pipe fitting rotates, circumferential welding is performed on the joint. Argon gas is also required for protection during external welding. Argon gas is introduced into the pipe fitting through the pipe clamping mechanism to pressurize the welding operation for protection, which solves the problems of slag in the weld and bluing in the heat-affected zone in complex jacket bending situations. At the same time, the pipe fitting is driven to rotate by the positioning air pipe, which can automatically complete the circumferential seam welding operation and improve practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

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

[0017] Figure 2 This is a schematic diagram of the pressure head installation structure;

[0018] Figure 3 This is a schematic diagram of the positioning air pipe installation structure;

[0019] Figure 4 It is an enlarged structural diagram of the welding mechanism;

[0020] Markings in the attached figure: 1. workbench; 2. pipe clamp bracket; 3. first cylinder; 4. lifting rod; 5. pressure rod; 6. pressure head; 7. bearing seat; 8. positioning air pipe; 9. driven wheel; 10. connecting pipe; 11. quick plug connector; 12. motor mounting seat; 13. rotating motor; 14. driving pulley; 15. adjusting bracket; 16. guide rail; 17. lifting slide plate; 18. slider; 19. driving motor; 20. gear; 21. rack; 22. support plate; 23. welding gun; 24. adjusting cylinder; 25. linkage block; 26. welding gun fixing block; 27. guide plate; 28. guide strip; 29. ​​limit block. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] like Figures 1 to 4 As shown, a Liebig tube clean welding device of the utility model comprises a workbench 1, a tube clamping mechanism and a welding mechanism, wherein the tube clamping mechanism is fixedly mounted on the workbench 1, and the welding mechanism is fixedly mounted on the workbench 1;

[0023] The pipe clamping mechanism includes a pipe clamping bracket 2, a first cylinder 3, a hoisting rod 4, a pressure rod 5, a pressure head 6, a bearing seat 7, a positioning air pipe 8, a driven wheel 9, a connecting pipe 10, a quick connector 11, a motor mounting seat 12, a rotating motor 13 and a driving pulley 14. The pipe clamping bracket 2 is fixedly mounted on the top of the workbench 1, the first cylinder 3 is fixedly mounted on the top of the pipe clamping bracket 2, the bottom output end of the first cylinder 3 is fixedly mounted with a hoisting rod 4, the pressure rod 5 is rotatably inserted at the bottom end of the hoisting rod 4, the bottom end of the pressure rod 5 is fixedly mounted with a pressure head 6, the bearing seat 7 is fixedly mounted on the workbench 1, the bearing seat 7 is concentric with the pressure head 6, and the positioning air pipe 8 is rotatably inserted in the bearing seat 7 , an air outlet is provided at the top of the positioning air pipe 8, a driven wheel 9 is fastened on the positioning air pipe 8, the driven wheel 9 is arranged on the lower side of the workbench 1, a connecting pipe 10 is rotatably installed at the bottom of the positioning air pipe 8, and the connecting pipe 10 is connected with the positioning air pipe 8, a quick-connect connector 11 is fixedly installed at the bottom of the connecting pipe 10, a motor mounting seat 12 is fixedly installed at the bottom of the workbench 1, a rotating motor 13 is fixedly installed at the bottom of the motor mounting seat 12, a driving pulley 14 is fixedly installed at the output end of the rotating motor 13, and a belt is driven between the driving pulley 14 and the driven wheel 9; a section of the pipe to be welded is sleeved on the positioning air pipe 8, and then another ... A section of pipe fitting is docked on the pipe fitting, and then the first cylinder 3 is started. The output end of the first cylinder 3 controls the lifting rod 4 to press down, and then the lifting rod 4 drives the pressing rod 5 and the pressure head 6 to move downward until the bottom end of the pressure head 6 is close to the top end of the pipe fitting, and the two groups of pipe fittings are pressed tightly. Then, the joints are welded by the welding mechanism. During the welding process, the external argon gas is transported into the pipe through the quick-connect connector 11 to solve the problems of slag generation and blueing of the heat-affected zone in the case of complex jacket bending. In addition, during the welding process, the rotating motor 13 is started, and the output end of the rotating motor 13 drives the active pulley 14 to rotate, and then the rotating active pulley 14 drives the driven pulley through the belt transmission. 9 rotates, and then the rotating driven wheel 9 drives the positioning air pipe 8 to rotate. The positioning air pipe 8 is rotatably connected with the connecting pipe 10. Therefore, when the positioning air pipe 8 rotates, the connecting pipe 10 can rotate independently of the positioning air pipe 8. Then, the pipe fitting is driven to rotate by the positioning air pipe 8. When the pipe fitting rotates, circumferential welding is performed on the joint. Argon gas needs to be sprayed for protection during external welding. Argon gas is introduced into the pipe fitting through the pipe clamping mechanism to pressurize and protect the welding operation. The problems of slag generation in the weld and bluing in the heat-affected zone in the case of complex jacket bending are solved. At the same time, the pipe fitting is driven to rotate by the positioning air pipe 8, so that the circumferential welding operation can be automatically completed, thereby improving the practicality of use.

[0024] As a preferred embodiment of the above, the welding mechanism includes an adjusting bracket 15, a guide rail 16, a lifting slide 17, a slider 18, a driving motor 19, a gear 20, a rack 21, a support plate 22 and a welding gun 23. The adjusting bracket 15 is fixedly mounted on the workbench 1, and two sets of guide rails 16 are symmetrically fixedly mounted on both sides of the adjusting bracket 15. Two sets of sliders 18 are symmetrically fixedly mounted on the lifting slide 17. The two sets of sliders 18 are respectively slidably mounted on the two sets of guide rails 16. The driving motor 19 is fixedly mounted on the lifting slide 17. The output end of the driving motor 19 is fixedly mounted with a gear 20, and the gear 20 is rotatably inserted on the lifting slide 17. The rack 21 is fixedly mounted on the adjusting bracket 15, and the gear 20 and the rack 21 are meshed with each other. The support plate 22 is fixedly mounted on the lifting slide 1 7, an adjustment component is provided on the support plate 22, and the welding gun 23 is fixedly installed on the adjustment component; the height of the welding gun 23 is adjusted according to the position of the pipe joint, and the drive motor 19 is started. The output end of the drive motor 19 drives the gear 20 to rotate, and then the rotating gear 20 cooperates with the rack 21 to generate a reaction force on the gear 20, and then the lifting slide 17 is driven by the gear 20 to move up and down as a whole. Under the sliding cooperation of the slider 18 and the guide rail 16, the lifting slide 17 is driven to move smoothly, and then the support plate 22 and the welding gun 23 are driven by the lifting slide 17 to move up and down, and the height of the welding gun 23 is adjusted until the head of the welding gun 23 is close to the joint, and then the pipe fitting can be welded by the welding gun 23, thereby increasing the range of welding operation of the welding gun 23 and reducing the limitation of use.

[0025] As a preferred embodiment of the above embodiment, the adjustment component includes an adjusting cylinder 24, a linkage block 25 and a welding gun fixing block 26. The adjusting cylinder 24 is fixedly installed on the support plate 22, the linkage block 25 is tightly connected to the output end of the adjusting cylinder 24, the welding gun fixing block 26 is tightly connected to the linkage block 25, the welding gun fixing block 26 is slidably mounted on the top of the support plate 22, and the welding gun 23 is fixedly inserted on the welding gun fixing block 26; start the adjusting cylinder 24, the adjusting cylinder 24 controls the translation of the linkage block 25 through its output end, and then drives the welding gun fixing block 26 to slide from the support plate 22 through the linkage block 25, and then drives the welding gun 23 to translate and adjust through the welding gun fixing block 26, thereby improving practicality of use.

[0026] As a preferred embodiment of the above embodiment, it also includes a guide piece 27 and a guide strip 28. The guide piece 27 is tightly connected to the hanging rod 4, and the guide strip 28 is fixedly installed on the pipe clamp bracket 2. The guide piece 27 is slidably mounted on the guide strip 28. Through the cooperation of the guide piece 27 and the guide strip 28, the hanging rod 4 is guided to move up and down, so as to prevent the hanging rod 4 from driving the pressure rod 5 and the pressure head 6 to deviate, thereby improving the stability of use.

[0027] As a preferred embodiment of the above embodiment, a limit block 29 is further included. The limit block 29 is fixedly installed at the bottom end of the guide bar 28. By providing the limit block 29, the downward movement of the guide piece 27 is limited, thereby improving the stability in use.

[0028] As a preferred embodiment of the above, the top of the positioning air tube 8 is set as a ball head, which is convenient for the guide pipe to be sleeved on the positioning air tube 8, avoiding sharp corners from scratching the pipe, and improving the stability of use.

[0029] As a preferred embodiment of the above embodiment, four sets of anti-skid feet are arranged on the four corners of the bottom end of the workbench 1 to increase the supporting friction of the bottom end of the workbench 1, prevent the equipment from accidentally sliding, and improve the stability of use.

[0030] As a preferred embodiment of the above embodiment, the rack 21 and the two sets of guide rails 16 are parallel to each other.

[0031] The utility model discloses a Liebig tube clean welding device. When working, a section of pipe fitting to be welded is sleeved on the positioning air pipe 8, and then another section of pipe fitting is docked on the pipe fitting. Then the first cylinder 3 is started, and the output end of the first cylinder 3 controls the lifting rod 4 to press down. Then the lifting rod 4 drives the pressing rod 5 and the pressure head 6 to move downward until the bottom end of the pressure head 6 is tightly attached to the top end of the pipe fitting, and the two groups of pipe fittings are pressed tightly. Then the butt joint is welded by the welding mechanism. During the welding process, the external argon gas is transported into the pipe through the quick-insert joint 11 to solve the problems of slag generation in the weld bead and blueing of the heat-affected zone in the case of complicated jacket bending. In addition, during the welding process, the rotating motor 13 is started, and the output end of the rotating motor 13 drives the driving pulley 14 to rotate. Then the rotating driving pulley 14 drives the driven wheel 9 to rotate through the belt transmission. Then the rotating driven wheel 9 drives the positioning air pipe 8 to rotate, and the positioning air pipe 8 and the The connecting pipe 10 is rotatably connected, so when the positioning air pipe 8 rotates, the connecting pipe 10 can rotate without rotating with the positioning air pipe 8, and then the pipe fitting is driven to rotate through the positioning air pipe 8, and the circumferential welding is performed on the joint when the pipe fitting rotates. Argon gas needs to be sprayed for protection during external welding, and the height of the welding gun 23 is adjusted according to the position of the pipe joint, and the drive motor 19 is started. The output end of the drive motor 19 drives the gear 20 to rotate, and then the rotating gear 20 cooperates with the rack 21 to generate a reaction force on the gear 20, and then the lifting slide 17 is driven by the gear 20 to move up and down as a whole, and under the sliding cooperation of the slider 18 and the guide rail 16, the lifting slide 17 is driven to move smoothly, and then the lifting slide 17 drives the support plate 22 and the welding gun 23 to move up and down, and the height of the welding gun 23 is adjusted until the head of the welding gun 23 is close to the joint, and then the pipe fitting can be welded by the welding gun 23.

[0032] The utility model provides a Liebig tube clean welding device, and its installation mode, connection mode or setting mode are all common mechanical modes, and any mode that can achieve its beneficial effects can be implemented.

[0033] The above are only preferred implementations of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A Liebig tube clean welding device, characterized in that: It comprises a workbench (1), a pipe clamping mechanism and a welding mechanism, wherein the pipe clamping mechanism is fixedly mounted on the workbench (1), and the welding mechanism is fixedly mounted on the workbench (1); The tube clamping mechanism comprises a tube clamping bracket (2), a first cylinder (3), a hoisting rod (4), a pressure rod (5), a pressure head (6), a bearing seat (7), a positioning air pipe (8), a driven wheel (9), a connecting pipe (10), a quick connector (11), a motor mounting seat (12), a rotating motor (13) and a driving pulley (14); the tube clamping bracket (2) is fixedly mounted on the top of the workbench (1); the first cylinder (3) is fixedly mounted on the top of the tube clamping bracket (2); the bottom output end of the first cylinder (3) is fixedly mounted with the hoisting rod (4); the pressure rod (5) is rotatably inserted into the bottom end of the hoisting rod (4); the bottom end of the pressure rod (5) is fixedly mounted with the pressure head (6); the bearing seat (7) is fixedly mounted on the workbench (1); the bearing seat (7) is concentric with the pressure head (6); The positioning air pipe (8) is rotatably inserted into the bearing seat (7); an air outlet is provided at the top of the positioning air pipe (8); a driven wheel (9) is fastened to the positioning air pipe (8); the driven wheel (9) is arranged at the lower side of the workbench (1); the connecting pipe (10) is rotatably installed at the bottom end of the positioning air pipe (8); the connecting pipe (10) and the positioning air pipe (8) are communicated with each other; a quick-connect connector (11) is fixedly installed at the bottom end of the connecting pipe (10); the motor mounting seat (12) is fixedly installed at the bottom end of the workbench (1); the rotating motor (13) is fixedly installed at the bottom end of the motor mounting seat (12); a driving pulley (14) is fixedly installed at the output end of the rotating motor (13); a belt transmission is used between the driving pulley (14) and the driven wheel (9).

2. A Liebig tube clean welding device as claimed in claim 1, characterized in that: The welding mechanism comprises an adjusting bracket (15), a guide rail (16), a lifting slide (17), a slider (18), a driving motor (19), a gear (20), a rack (21), a support plate (22) and a welding gun (23), wherein the adjusting bracket (15) is fixedly mounted on a workbench (1), two sets of guide rails (16) are symmetrically fixedly mounted on both side ends of the adjusting bracket (15), two sets of sliders (18) are symmetrically fixedly mounted on the lifting slide (17), and the two sets of sliders (18) are respectively slidably mounted on the two sets of guide rails (1 6), the driving motor (19) is fixedly mounted on the lifting slide (17), a gear (20) is fixedly mounted on the output end of the driving motor (19), the gear (20) is rotatably inserted on the lifting slide (17), the rack (21) is fixedly mounted on the adjustment bracket (15), the gear (20) and the rack (21) are meshed with each other, the support plate (22) is fixedly mounted on the lifting slide (17), an adjustment component is arranged on the support plate (22), and the welding gun (23) is fixedly mounted on the adjustment component.

3. A Liebig tube clean welding device as claimed in claim 2, characterized in that: The adjusting assembly comprises an adjusting cylinder (24), a linkage block (25) and a welding gun fixing block (26); the adjusting cylinder (24) is fixedly mounted on a support plate (22); the linkage block (25) is tightly connected to an output end of the adjusting cylinder (24); the welding gun fixing block (26) is tightly connected to the linkage block (25); the welding gun fixing block (26) is slidably mounted on the top of the support plate (22); and the welding gun (23) is fixedly inserted on the welding gun fixing block (26).

4. A Liebig tube clean welding device as claimed in claim 1, characterized in that: It also includes a guide piece (27) and a guide strip (28), wherein the guide piece (27) is tightly connected to the hanging rod (4), the guide strip (28) is fixedly mounted on the pipe clamping bracket (2), and the guide piece (27) is slidably mounted on the guide strip (28).

5. A Liebig tube clean welding device as claimed in claim 4, characterized in that: It also includes a limit block (29), and the limit block (29) is fixedly mounted on the bottom end of the guide bar (28).

6. A Liebig tube clean welding device as claimed in claim 1, characterized in that: The top end of the positioning air pipe (8) is configured as a ball head.

7. A Liebig tube clean welding device as claimed in claim 1, characterized in that: Four sets of anti-slip feet are arranged at the four corners of the bottom end of the workbench (1).

8. A Liebig tube clean welding device as claimed in claim 2, characterized in that: The rack (21) and the two sets of guide rails (16) are parallel to each other.

Images