Vertical position welding device for straight pipe butt welding

Abstract

The invention relates to the technical field of straight pipe welding, and discloses a vertical position welding device for straight pipe butt welding, which comprises a sleeve and a distance adjusting assembly arranged in the sleeve, the distance adjusting assembly comprises a lantern ring rotationally connected to the bottom of the sleeve, first screw rods are symmetrically and rotationally connected in the sleeve, and the outer walls of the bottoms of the first screw rods are meshed with the lantern ring; threaded grooves are symmetrically formed in the outer wall of the first lead screw, and limiting cylinders are symmetrically and slidably connected to the outer wall of the first lead screw. Through expansion of the rubber sealing rings after the limiting cylinder moves, the rubber sealing rings can be tightly attached to the outer walls of the straight pipes, so that the straight pipes are limited in the limiting cylinder and kept in the vertical state, and the outer walls of the two straight pipes are attached through the upper rubber sealing ring and the lower rubber sealing ring correspondingly; the outer walls of the two straight pipes are in a closed state under the isolation of the rubber sealing rings, so that the influence of external factors on the straight pipes during welding can be avoided, meanwhile, the oxidation speed of welding seams during welding of the straight pipes is reduced, and the butt welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of straight pipe welding, in particular to a vertical welding device for straight pipe butt welding. Background Art

[0002] In industrial manufacturing, construction engineering, piping systems and other fields, straight pipe butt welding is a common and critical connection process.

[0003] Traditional devices mostly use mechanical clamps to fix pipes, which are difficult to adapt to pipes of different diameters and difficult to automatically adjust the vertical posture of the pipes, which easily leads to welding deviations. When welding straight pipes, the equipment needs to be moved to the position where the straight pipes need to be welded, resulting in low butt welding efficiency.

[0004] Straight pipes are usually in a storage state before welding. Rust spots will appear on the surface of the straight pipes due to environmental humidity and oxidation. Existing devices do not integrate surface rust removal and polishing functions, and additional equipment is required for pretreatment, which increases the complexity and cost of the process.

[0005] Existing equipment does not isolate oxygen during welding, and the welds are easily oxidized and rusted under high-temperature operations. Existing devices are difficult to meet the needs.

[0006] Therefore, a vertical welding device for straight pipe butt welding is proposed. Summary of the Invention

[0007] The object of the present invention is to provide a vertical welding device for straight pipe butt welding to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a vertical welding device for straight pipe butt welding, comprising a sleeve and a distance-adjusting assembly arranged inside the sleeve, the distance-adjusting assembly comprising a ring rotatably connected to the bottom of the sleeve, the interior of the sleeve is symmetrically rotatably connected to a first screw rod, the bottom outer wall of the first screw rod is engaged with the ring, the outer wall of the first screw rod is symmetrically provided with a threaded groove, the outer wall of the first screw rod is symmetrically slidably connected to a limiting cylinder, the limiting cylinder is slidably connected to the threaded groove of the first screw rod, the inner wall of the limiting cylinder is installed with a rubber sealing ring, the bottom of both sides of the limiting cylinder are installed with a cylinder, the interior of the limiting cylinder is provided with an air injection groove, and the air injection groove is connected between the rubber sealing ring and the cylinder.

[0009] Preferably, a rotating assembly is provided inside the sleeve, and the rotating assembly includes an annular electrode plate fixedly connected to the inner wall of the sleeve, an annular frame is rotatably connected inside the sleeve, the inner wall of the annular frame is slidably connected to a slide, a first spring is fixedly connected between the slide and the inner wall of the annular frame, the outer wall of the first spring is slidably connected to an elastic plate, a welding gun is installed on the side of the slide away from the annular frame, the outer wall of the annular frame is fixedly connected to an electrode sheet, the welding gun and the electrode sheet are electrically connected, the electrode sheet and the annular electrode plate are in contact with each other, the bottom of the limiting cylinder is rotatably connected to a turntable, and the bottom of the turntable is fixedly connected to a push plate.

[0010] Preferably, a polishing assembly is provided inside the sleeve, and the polishing assembly includes a first gear shaft symmetrically connected to the inside of the annular frame, the inner walls of the first gear shaft are fixedly connected to the first protrusion, the inside of the annular frame is slidably connected to the gear rack, the inner wall of the gear rack is meshed with the first gear shaft, the gear rack is slidably connected to a sliding rod on the side away from the annular frame, the sliding rod is fixedly connected to a storage bin on the side away from the annular frame, a second spring is fixedly connected between the end of the sliding rod and the inner wall of the gear rack, a polishing plate is slidably connected to the inside of the storage bin, a third spring is fixedly connected between the polishing plate and the storage bin, a storage groove is provided at the bottom of the inner cavity of the storage bin, and the bottom of the turntable is fixedly connected to a second screw rod distributed in an annular array.

[0011] Preferably, a partition assembly is provided inside the sleeve, and the partition assembly includes a second gear shaft symmetrically connected to the inside of the annular frame for rotation, and a partition is symmetrically slidably connected to the inside of the annular frame. The second gear shaft and the partition are meshed, and the inner wall of the second gear shaft is fixedly connected to a second protrusion.

[0012] Preferably, a driver is installed on the outer wall of the sleeve, a base is installed on the bottom of the sleeve, and an air extraction hole is opened at the bottom of the base.

[0013] Preferably, a notch matching the shape of the annular frame is provided at the bottom of the turntable, and the two turntables will fit tightly with the annular frame when relatively close to each other. The side of the push plate close to the elastic plate is inclined, and the annular frame is located in the middle of the inner cavity of the sleeve.

[0014] Preferably, a through hole adapted to the second screw rod is opened on the annular frame, the first protrusion inside the first gear shaft is adapted to the second screw rod, the first protrusion is slidably connected to the outer wall of the second screw rod, and the smooth surface of the polishing plate is coplanar with the storage bin.

[0015] Preferably, the second protrusion inside the second gear shaft is adapted to the second screw rod, and the second protrusion is slidably connected to the outer wall of the second screw rod.

[0016] Preferably, the partition extends to the outside of the annular frame when not in use, and the partition forms a partition for the straight pipe placed inside the sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The expansion of the rubber sealing ring after the movement of the limiting cylinder enables the rubber sealing ring to fit tightly with the outer wall of the straight pipe, so that the straight pipe is limited inside the limiting cylinder and maintains a vertical state. The upper and lower rubber sealing rings respectively fit the outer walls of the two straight pipes, so that the outer walls of the two straight pipes are in a sealed state under the isolation of the rubber sealing rings, which can avoid the influence of external factors on the straight pipe welding, and at the same time reduce the oxidation rate of the weld of the straight pipe during welding, thereby improving the butt welding quality.

[0019] 2. The partition separates the two straight pipes so that the two straight pipes can maintain the required position for butt welding in the middle of the sleeve cavity inside the equipment, so that the staff does not need to adjust the equipment according to the welding position, thereby improving the convenience of equipment use. After the second screw rod slides into the inside of the annular frame and drives the second gear shaft to rotate, the partition can be actively retracted into the inside of the annular frame, so that the two straight pipes can be tightly butted inside the sleeve, thereby improving the strength of the straight pipes after butt welding.

[0020] 3. The polishing plate is driven to polish the surface of the straight pipe when the annular frame rotates, so that the surface rust of the straight pipe can be removed before welding, thereby reducing the contact resistance between the straight pipe and the welding gun, and making the arc released by the welding gun efficient and stable during the welding process. The rust residue on the polishing plate is collected by the storage groove, which can prevent the rust residue from re-attaching to the straight pipe after grinding, thereby improving the welding efficiency of the welding gun on the straight pipe. The push plate squeezes the elastic plate, so that the welding gun can fit on the surface of straight pipes with different diameters, improving the adaptability of the equipment when welding different straight pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic cross-sectional view of the internal structure of the present invention;

[0023] Figure 3 This is an exploded schematic diagram of the overall structure of the present invention;

[0024] Figure 4 It is a partial cross-sectional schematic diagram of the distance adjustment assembly structure of the present invention;

[0025] Figure 5 It is a partial cross-sectional schematic diagram of the sleeve structure of the present invention;

[0026] Figure 6 It is a schematic cross-sectional view of the rotating assembly structure of the present invention;

[0027] Figure 7 For the present invention Figure 6 A schematic diagram of the structure at center A;

[0028] Figure 8 This is an exploded schematic diagram of the ring frame structure of the present invention;

[0029] Figure 9 For the present invention Figure 8 A magnified schematic diagram of the structure at point B in the middle.

[0030] In the picture:

[0031] 1. Base; 2. Sleeve; 3. Pitch adjustment assembly; 4. Rotation assembly; 5. Polishing assembly; 6. Separation assembly; 7. Driver; 8. Exhaust hole;

[0032] 31. Ring; 32. First screw rod; 33. Limiting cylinder; 34. Rubber sealing ring; 35. Cylinder; 36. Air injection groove;

[0033] 41. Annular electrode plate; 42. Annular frame; 43. Slide; 44. First spring; 45. Elastic plate; 46. Welding gun; 47. Electrode sheet; 48. Rotary disk; 49. Push plate;

[0034] 51. First gear shaft; 52. First protrusion; 53. Gear rack; 54. Sliding rod; 55. Second spring; 56. Storage compartment; 57. Polishing plate; 58. Third spring; 59. Storage slot; 510. Second screw rod;

[0035] 61. Second gear shaft; 62. Partition plate; 63. Second protrusion. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0037] Embodiments of the present invention

[0038] See also Figures 1 to 9, a vertical welding device for straight pipe butt welding, includes a sleeve 2 and a distance adjusting component 3 arranged inside the sleeve 2, the distance adjusting component 3 includes a ring 31 rotatably connected to the bottom of the sleeve 2, the interior of the sleeve 2 is symmetrically rotatably connected to a first screw rod 32, the bottom outer wall of the first screw rod 32 is meshed with the ring 31, the outer wall of the first screw rod 32 is symmetrically provided with a threaded groove, the outer wall of the first screw rod 32 is symmetrically slidingly connected to a limiting cylinder 33, the limiting cylinder 33 is slidably connected to the threaded groove of the first screw rod 32, the inner wall of the limiting cylinder 33 is installed with a rubber sealing ring 34, and cylinders 35 are installed on the bottom of both sides of the limiting cylinder 33, and an air injection groove 36 is provided inside the limiting cylinder 33, and the air injection groove 36 is connected between the rubber sealing ring 34 and the cylinder 35.

[0039] A driver 7 is installed on the outer wall of the sleeve 2 , a base 1 is installed on the bottom of the sleeve 2 , and an air extraction hole 8 is opened at the bottom of the base 1 .

[0040] A partition assembly 6 is provided inside the sleeve 2, and the partition assembly 6 includes a second gear shaft 61 symmetrically connected to the inside of the annular frame 42 for rotation, and a partition plate 62 symmetrically slidably connected to the inside of the annular frame 42. The second gear shaft 61 and the partition plate 62 are meshed with each other, and the inner wall of the second gear shaft 61 is fixedly connected to a second protrusion 63.

[0041] The second protrusion 63 inside the second gear shaft 61 is adapted to the second screw rod 510 , and the second protrusion 63 is slidably connected to the outer wall of the second screw rod 510 .

[0042] The partition 62 extends to the outside of the annular frame 42 when not in use, and the partition 62 forms a partition for the straight pipe placed inside the sleeve 2.

[0043] A rotating assembly 4 is provided inside the sleeve 2, and the rotating assembly 4 includes an annular electrode plate 41 fixedly connected to the inner wall of the sleeve 2, and an annular frame 42 is rotatably connected inside the sleeve 2, and the inner wall of the annular frame 42 is slidably connected to a slide 43, and a first spring 44 is fixedly connected between the slide 43 and the inner wall of the annular frame 42, and the outer wall of the first spring 44 is slidably connected to an elastic plate 45, and a welding gun 46 is installed on the side of the slide 43 away from the annular frame 42, and the outer wall of the annular frame 42 is fixedly connected to an electrode sheet 47, and the welding gun 46 and the electrode sheet 47 are electrically connected, and the electrode sheet 47 and the annular electrode plate 41 are in contact with each other, and the bottom of the limiting cylinder 33 is rotatably connected to a turntable 48, and the bottom of the turntable 48 is fixedly connected to a push plate 49.

[0044] A notch matching the shape of the annular frame 42 is provided at the bottom of the turntable 48. When the two turntables 48 are relatively close to each other, they will fit tightly with the annular frame 42. The side of the push plate 49 close to the elastic plate 45 is inclined, and the annular frame 42 is located in the middle of the inner cavity of the sleeve 2.

[0045] A polishing assembly 5 is provided inside the sleeve 2, and the polishing assembly 5 includes a first gear shaft 51 which is symmetrically connected to the inside of the annular frame 42, and the inner wall of the first gear shaft 51 is fixedly connected to the first protrusion 52, and the inside of the annular frame 42 is slidably connected to the gear rack 53, and the inner wall of the gear rack 53 is meshed with the first gear shaft 51, and the side of the gear rack 53 away from the annular frame 42 is slidably connected to the slide rod 54, and the side of the slide rod 54 away from the annular frame 42 is fixedly connected to the storage bin 56, and a second spring 55 is fixedly connected between the end of the slide rod 54 and the inner wall of the gear rack 53, and a polishing plate 57 is slidably connected to the inside of the storage bin 56, and a third spring 58 is fixedly connected between the polishing plate 57 and the storage bin 56, and a storage groove 59 is provided at the bottom of the inner cavity of the storage bin 56, and the bottom of the turntable 48 is fixedly connected to the second screw rod 510 distributed in an annular array.

[0046] A through hole is opened on the annular frame 42 to match the second screw rod 510, the first protrusion 52 inside the first gear shaft 51 is matched with the second screw rod 510, the first protrusion 52 is slidably connected to the outer wall of the second screw rod 510, and the smooth surface of the polishing plate 57 is coplanar with the storage bin 56.

[0047] During actual use of this embodiment, the staff will place the two straight pipes that need to be butt-welded on the base 1 and inside the sleeve 2 respectively. The straight pipes placed inside the sleeve 2 will be blocked by the partition 62 and limited to the middle of the inner cavity of the sleeve 2. Then the staff will control the sleeve 2 to move downward on the base 1 so that the top of the straight pipe on the base 1 will conflict with the lower surface of the partition 62. At this time, the two straight pipes are vertically symmetrically distributed inside the sleeve 2 with the partition 62 as the center, and the welds of the two straight pipes that need to be butt-welded are also located in the middle of the inner cavity of the sleeve 2.

[0048] Then the staff starts the driver 7, which will first drive the ring 31 to rotate through engagement. During the rotation, the ring 31 will drive the first screw rod 32 to rotate through engagement. When the first screw rod 32 rotates, the two limiting cylinders 33 will be relatively close to each other under the guidance of the thread groove of the first screw rod 32. During the sliding of the limiting cylinder 33 inside the sleeve 2, the cylinder 35 will be squeezed with the inner wall of the sleeve 2. After being squeezed, the cylinder 35 will discharge the air inside it into the rubber sealing ring 34 through the air injection groove 36. The rubber sealing ring 34 will expand due to the increase in air pressure. After expansion, the rubber sealing ring 34 will fit tightly with the outer wall of the straight pipe and make the straight pipe move relatively close to each other as the two limiting cylinders 33 and the two rubber sealing rings 34 move relatively close. The expansion of the rubber sealing ring 34 can adjust the posture of the straight pipe inside the limiting cylinder 33 to ensure that the straight pipe remains in a vertical state before welding.

[0049] When the limiting cylinder 33 slides inside the sleeve 2 and moves the rotating disc 48 together, the second lead screw 510 on the rotating disc 48 will be inserted into the inside of the annular frame 42, and after the second lead screw 510 is inserted into the inside of the annular frame 42, the second protrusion 63 on the inner wall of the second tooth shaft 61 will slide on the outer wall of the second lead screw 510, so that the second tooth shaft 61 rotates inside the annular frame 42, and when the second tooth shaft 61 rotates, it drives the baffle 62 to retract into the annular frame 42 through engagement, so that the upper and lower straight pipes are no longer blocked by the baffle 62, and the adjacent surfaces of the two straight pipes are tightly fitted as the limiting cylinder 33 and the two rubber sealing rings 34 move relatively close to each other.

[0050] When the two straight pipes are tightly connected, the top of the upper straight pipe is covered by the staff, and the inside of the two straight pipes is pumped through the air hole 8 by the pumping device, so that the two straight pipes are tightly fitted in a low pressure state, and the oxygen content in the straight pipe is reduced, and the oxidation speed of the straight pipe weld during high temperature welding is reduced.

[0051] Through the expansion of the rubber sealing ring 34 after the movement of the limiting cylinder 33, the rubber sealing ring 34 can be tightly fitted with the outer wall of the straight pipe, so that the straight pipe is limited in the limiting cylinder 33 and maintains a vertical state, and through the fitting of the upper and lower rubber sealing rings 34 on the outer walls of the two straight pipes, the outer walls of the two straight pipes are in a sealed state under the isolation of the rubber sealing ring 34, which can avoid the influence of external factors on the straight pipe welding, reduce the oxidation speed of the straight pipe weld during welding, and improve the butt welding quality.

[0052] Through the separation of the baffle 62 to the two straight pipes, the two straight pipes can be kept in the middle of the inner cavity of the sleeve 2 for butt welding, so that the staff does not need to adjust the equipment according to the welding position, improves the convenience of equipment use, and through the rotation of the second tooth shaft 61 after the second lead screw 510 slides into the inside of the annular frame 42, the baffle 62 can be actively retracted into the inside of the annular frame 42, so that the two straight pipes can be tightly connected inside the sleeve 2, and the strength of the straight pipe after butt welding is improved.

[0053] When the polishing plate 57 is in contact with the surface of the straight tube, the gear rack 53 continues to slide toward the outside of the annular frame 42, causing the slide rod 54 to slide inside the gear rack 53. At the same time, the second spring 55 is stretched and elastically extended, and the third spring 58 is squeezed by the storage bin 56 and the polishing plate 57 and elastically contracts. During the rotation of the annular frame 42, the polishing plate 57 drives the polishing plate 57 to rub and remove rust on the outer walls of the two straight tubes, thereby polishing and grinding the parts of the two straight tubes that need to be welded. The welding slag dropped from the surface of the polishing plate 57 into the receiving groove 59 to avoid the influence of rust slag during the straight tube welding process.

[0054] The polishing plate 57 is driven to polish the surface of the straight pipe when the annular frame 42 rotates, so that the surface rust of the straight pipe can be removed before welding, thereby reducing the contact resistance between the straight pipe and the welding gun 46, and making the arc released by the welding gun 46 efficient and stable during the welding process. The rust residue on the polishing plate 57 is collected by the receiving groove 59, which can prevent the rust residue from re-attaching to the straight pipe after grinding, thereby improving the welding efficiency of the welding gun 46 on the straight pipe. The push plate 49 squeezes the elastic plate 45, so that the welding gun 46 can fit on the surface of straight pipes with different diameters, thereby improving the adaptability of the equipment when welding different straight pipes.

[0055] Then the staff turns on the power of the equipment so that the electric energy is transmitted to the electrode sheet 47 and the welding gun 46 through the annular electrode plate 41, so that the welding gun 46 generates an arc, and controls the driver 7 to engage with the annular frame 42, and drives the welding gun 46 to rotate inside the sleeve 2 through the annular frame 42, so that the welding gun 46 performs butt welding on the two straight pipes.

[0056] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0057] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A vertical welding device for straight pipe butt welding, comprising a sleeve (2) and a distance adjustment component (3) arranged inside the sleeve (2), characterized in that: The distance adjustment component (3) includes a collar (31) rotatably connected to the bottom of the sleeve (2); the interior of the sleeve (2) is symmetrically rotatably connected to a first screw rod (32); the bottom outer wall of the first screw rod (32) is engaged with the collar (31); the outer wall of the first screw rod (32) is symmetrically provided with a thread groove; the outer wall of the first screw rod (32) is symmetrically slidably connected to a limiting cylinder (33); the limiting cylinder (33) is slidably connected to the thread groove of the first screw rod (32); the inner wall of the limiting cylinder (33) is provided with a rubber sealing ring (34); the bottom of both sides of the limiting cylinder (33) is provided with a cylinder (35); the interior of the limiting cylinder (33) is provided with an air injection groove (36); the air injection groove (36) is connected between the rubber sealing ring (34) and the cylinder (35).

2. A vertical welding device for straight pipe butt welding according to claim 1, characterized in that: A rotating assembly (4) is provided inside the sleeve (2), and the rotating assembly (4) includes an annular electrode plate (41) fixedly connected to the inner wall of the sleeve (2); an annular frame (42) is rotatably connected inside the sleeve (2); the inner wall of the annular frame (42) is slidably connected to a slide (43); a first spring (44) is fixedly connected between the slide (43) and the inner wall of the annular frame (42); the outer wall of the first spring (44) is slidably connected to an elastic plate (45); a welding gun (46) is installed on the side of the slide (43) away from the annular frame (42); an electrode sheet (47) is fixedly connected to the outer wall of the annular frame (42); the welding gun (46) and the electrode sheet (47) are electrically connected; the electrode sheet (47) and the annular electrode plate (41) are in contact with each other; the bottom of the limiting cylinder (33) is rotatably connected to a turntable (48), and the bottom of the turntable (48) is fixedly connected to a push plate (49).

3. A vertical welding device for straight pipe butt welding according to claim 2, characterized in that: A polishing assembly (5) is provided inside the sleeve (2), and the polishing assembly (5) includes a first gear shaft (51) symmetrically connected to the inside of the annular frame (42), the inner wall of the first gear shaft (51) is fixedly connected to a first protrusion (52), the inside of the annular frame (42) is slidably connected to a gear rack (53), the inner wall of the gear rack (53) is meshed with the first gear shaft (51), and the side of the gear rack (53) away from the annular frame (42) is slidably connected to a slide rod (54), and the slide rod (54) A storage bin (56) is fixedly connected to the side away from the annular frame (42), a second spring (55) is fixedly connected between the end of the slide rod (54) and the inner wall of the gear rack (53), a polishing plate (57) is slidably connected inside the storage bin (56), a third spring (58) is fixedly connected between the polishing plate (57) and the storage bin (56), a storage groove (59) is provided at the bottom of the inner cavity of the storage bin (56), and a second screw rod (510) is fixedly connected to the bottom of the turntable (48) in an annular array.

4. A vertical welding device for straight pipe butt welding according to claim 3, characterized in that: A partition assembly (6) is provided inside the sleeve (2), and the partition assembly (6) includes a second gear shaft (61) symmetrically connected to the inside of the annular frame (42) in a rotationally symmetrical manner. A partition plate (62) is symmetrically slidably connected to the inside of the annular frame (42). The second gear shaft (61) and the partition plate (62) are meshed with each other, and the inner wall of the second gear shaft (61) is fixedly connected to a second protrusion (63).

5. The vertical welding device for straight pipe butt welding according to claim 1, characterized in that: A driver (7) is installed on the outer wall of the sleeve (2), a base (1) is installed on the bottom of the sleeve (2), and an air extraction hole (8) is provided at the bottom of the base (1).

6. A vertical welding device for straight pipe butt welding according to claim 2, characterized in that: The bottom of the rotating disk (48) is provided with a notch that matches the shape of the annular frame (42). When the two rotating disks (48) are relatively close to each other, they will fit tightly with the annular frame (42). The side of the pushing plate (49) close to the elastic plate (45) is inclined. The annular frame (42) is located in the middle of the inner cavity of the sleeve (2).

7. The vertical welding device for straight pipe butt welding according to claim 3, characterized in that: The annular frame (42) is provided with a through hole adapted to the second screw rod (510); the first protrusion (52) inside the first gear shaft (51) is adapted to the second screw rod (510); the first protrusion (52) is slidably connected to the outer wall of the second screw rod (510); and the polished surface of the polishing plate (57) is coplanar with the storage bin (56).

8. The vertical welding device for straight pipe butt welding according to claim 4, characterized in that: The second protrusion (63) inside the second gear shaft (61) is adapted to the second screw rod (510), and the second protrusion (63) is slidably connected to the outer wall of the second screw rod (510).

9. The vertical welding device for straight pipe butt welding according to claim 4, characterized in that: The partition (62) extends to the outside of the annular frame (42) when not in use, and the partition (62) forms a partition for the straight pipe placed inside the sleeve (2).

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