Chamfering device for port of cold-bending welded pipe

Abstract

The utility model relates to the technical field of cold-bending welded pipe port processing, and discloses a cold-bending welded pipe port chamfering device which comprises a rack, universal wheels, supporting columns, a first movable transmission assembly and a second movable transmission assembly, wherein the universal wheels and the supporting columns are arranged on the lower portion of the rack, and the first movable transmission assembly and the second movable transmission assembly are arranged on the upper portion of the rack. The baffle is arranged on the front side of the first movable transmission assembly and the front side of the second movable transmission assembly, and a surrounding plate is fixedly installed at the end, away from the universal wheels and the supporting columns, of the rack. The chamfering device for the end opening of the cold-bending welded pipe has multiple advantages, is provided with an outer chamfering assembly and an inner chamfering assembly, is rich and not single in function, high in practicability, capable of being selected by a client according to needs, suitable for application and popularization, capable of effectively collecting dust and chippings generated by chamfering through mutual communication of the collecting box, the vacuum dust suction pump and other assemblies, capable of keeping the working environment clean and high in practicability. And the inner chamfering cutter and the outer chamfering cutter which are distributed in a loop line mode can efficiently conduct inner chamfering machining and outer chamfering machining correspondingly, the cold-bending welded pipe can be chamfered better, and the practicability and functionality of the device are further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-bend welded pipe port processing, in particular to a chamfering device for cold-bend welded pipe ports. Background Art

[0002] Cold-bent welded pipe is a type of pipe carefully made through a unique cold working method. Specifically, it uses advanced process technology to skillfully bend steel strips or steel plates into a specific shape, and then undergoes a delicate welding process to make it a whole. In its initial state, its ends are often untreated and appear relatively rough, with a certain degree of burrs or irregular shapes. This not only affects the appearance, but may also bring many hidden dangers in actual application.

[0003] In actual applications, the ports of cold-bent welded pipes usually require professional chamfering treatment. This is because after chamfering, they can greatly meet the needs of connecting other components, making the connection tighter and more stable. At the same time, it can effectively improve the sealing, prevent liquid or gas leakage, and ensure the safe operation of the system. In addition, chamfering can also avoid scratching operators and ensure the safety of staff; it can also prevent damage to other equipment during installation and use, and reduce unnecessary losses. In actual applications, cold-bent welded pipes have a wide range of uses, such as in construction, machinery manufacturing, petrochemicals and other fields. They can play an important role.

[0004] As the most recent Chinese utility model patent with prior art announcement number CN221312761U, it specifically discloses an automatic clamping and chamfering machine for welded pipe ports. The automatic clamping and chamfering machine for welded pipe ports drives the upper clamping plate downward by a cylinder to fix the welded pipe in the fixing hole while aligning the welded pipe with the turntable. The linear moving mechanism drives the chamfering tool on the turntable to contact the end of the welded pipe, and then cooperates with the rotating mechanism to drive the turntable to rotate to achieve chamfering of the welded pipe port.

[0005] The steel pipe chamfering device with such a structure can only realize simple external chamfering and cannot realize internal chamfering, thereby affecting the practicality of the entire device. In addition, when the steel pipe chamfering device is used for a long time in actual application, debris is likely to accumulate on the workbench. Summary of the Invention

[0006] Aiming at the problems existing in the existing cold-bent welded pipe port chamfering processing device, the utility model provides a chamfering device for the cold-bent welded pipe port, which can effectively solve the problems in the prior art.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0008] A chamfering device for cold-bent welded pipe ends comprises a frame, a universal wheel and a support column at the bottom of the frame, a displaceable first transmission assembly and a displaceable second transmission assembly at the top of the frame, and a baffle in front of the displaceable first transmission assembly and the displaceable second transmission assembly. A panel is fixedly mounted on one end of the frame away from the universal wheel and the support column. The upper part of the frame is located on the inner side of the panel and is provided with a displaceable first transmission assembly and a displaceable second transmission assembly. The displaceable first transmission assembly and the displaceable second transmission assembly have the same structure. A cold-bent welded pipe clamping assembly is provided on one side of the first transmission assembly and the displaceable second transmission assembly close to the baffle, the inner side of the cold-bent welded pipe clamping assembly clamps the cold-bent welded pipe body, the inner side of the displaceable first transmission assembly is provided with a cold-bent welded pipe outer chamfering assembly, the inner side of the displaceable second transmission assembly is provided with a cold-bent welded pipe inner chamfering assembly, the outer sides of the cold-bent welded pipe outer chamfering assembly and the cold-bent welded pipe inner chamfering assembly are both provided with bearing seats, and the lower parts of the displaceable first transmission assembly and the displaceable second transmission assembly are both provided with electric guide rails.

[0009] Preferably, a side cabinet door and a front cabinet door are provided on the outer side of the lower part of the frame, a control box is fixedly installed on the side of the frame close to the enclosure, a collecting box is fixedly installed on the top of the inside of the frame, a first connecting pipe is fixedly installed on the end of the collecting box away from the frame, a vacuum dust pump is installed on the end of the first connecting pipe away from the collecting box, a second connecting pipe is fixedly installed on the air outlet end of the vacuum dust pump, a dust collecting box is installed on the end of the second connecting pipe away from the vacuum dust pump, an air filter window is provided on the side of the dust collecting box away from the vacuum dust pump, and a through groove is provided on the top of the frame, the shiftable first transmission assembly and the shiftable second transmission assembly.

[0010] Through the above technical solution, the universal wheels and support columns at the bottom of the rack make the device easy to move and stably placed. The side cabinet doors and the front cabinet doors facilitate maintenance and inspection of the interior of the rack, and the enclosure can prevent debris from falling to the ground.

[0011] Preferably, the collecting box, the vacuum pump, the first connecting pipe, the second connecting pipe and the dust collecting box are connected to each other, the collecting box is located at the lower part of the through-groove, and the collecting box is connected to the through-groove.

[0012] Through the above technical solution, the collection box, vacuum pump, first connecting pipe, second connecting pipe and dust collection box are connected to each other, and the collection box is located at the lower part of the through-groove and is interconnected with the through-groove. During the chamfering process, the dust and debris generated can be effectively collected to keep the working environment clean.

[0013] Preferably, the displaceable first transmission assembly includes an outer box, a drive motor, a first pulley, a second pulley and a transmission belt. The outer box is fixedly mounted on the top of the frame, and the drive motor is rotatably mounted on one end away from the cold-bent welded pipe clamping assembly. The second pulley is provided inside the outer box, and a transmission belt is provided between the second pulley and the first pulley.

[0014] Through the above technical solution, the outer box in the first transmission assembly can be shifted to protect the internal structure, and the driving motor drives its cold-bent welded pipe external chamfering assembly through the first pulley, the second pulley and the transmission belt to provide power for the chamfering operation.

[0015] Preferably, the cold-bent welded pipe clamping assembly includes a cold-bent welded pipe clamping seat, a hydraulic cylinder, a first arched clamping block, a second arched clamping block and a rubber strip. The first arched clamping block and the second arched clamping block are provided on the inner side of the cold-bent welded pipe clamping seat. The hydraulic cylinder is fixedly installed on one end of the cold-bent welded pipe clamping seat away from the first arched clamping block and the second arched clamping block. The movable end of the hydraulic cylinder is fixedly connected to the second arched clamping block. Rubber strips are fixedly installed on the inner diameter surfaces of the first arched clamping block and the second arched clamping block.

[0016] Through the above technical solution, the cold-bent welded pipe clamping seat, hydraulic cylinder, first arched clamping block, second arched clamping block and rubber strip in the cold-bent welded pipe clamping assembly cooperate with each other. The hydraulic cylinder pushes the first arched clamping block and the second arched clamping block to work together to firmly clamp the cold-bent welded pipe body. The rubber strip can prevent damage to the cold-bent welded pipe.

[0017] Preferably, the outer chamfer assembly of the cold-bent welded pipe includes an outer chamfer rotating shaft, an outer chamfer docking ring, an outer chamfer docking groove, an outer chamfer knife and an outer chamfer pin. The outer chamfer docking ring is fixedly installed on one end of the outer chamfer rotating shaft close to the cold-bent welded pipe clamping assembly. The outer chamfer docking ring is provided with an outer chamfer docking groove on one side close to the cold-bent welded pipe clamping assembly. The outer chamfer knife is plugged and installed inside the outer chamfer docking groove. An outer chamfer pin is provided between the outer chamfer docking ring and the outer chamfer knife. The outer chamfer knives are provided with multiple identical ones, and the multiple outer chamfer knives are distributed in a ring shape. The inclination angle of the outer chamfer knife is away from the center of the outer chamfer docking ring.

[0018] Through the above technical solution, the external chamfering rotating shaft of the cold-bent welded pipe external chamfering assembly drives the external chamfering docking ring to rotate, and the external chamfering knife in the external chamfering docking groove is fixed by the external chamfering pin. Multiple external chamfering knives distributed in a ring can efficiently perform external chamfering processing on the port of the cold-bent welded pipe body.

[0019] Preferably, the inner chamfer assembly of the cold-bent welded pipe includes an inner chamfer rotating shaft, an inner chamfer docking ring, an inner chamfer docking groove, an inner chamfer knife and an inner chamfer pin. The inner chamfer rotating shaft is fixedly installed with an inner chamfer docking ring at one end close to the cold-bent welded pipe clamping assembly. The inner chamfer docking ring is provided with an inner chamfer docking groove on one side close to the cold-bent welded pipe clamping assembly. The inner chamfer knife is plugged and installed inside the inner chamfer docking groove. An inner chamfer pin is provided between the inner chamfer knife and the inner chamfer docking ring. The inner chamfer knives are provided in plurality, and the plurality of inner chamfer knives are distributed in a ring shape. The inclination angle of the inner chamfer knife is close to the center of the inner chamfer docking ring.

[0020] Through the above technical solution, in the cold-bent welded pipe internal chamfering assembly, the internal chamfering rotating shaft plays a driving role, driving the internal chamfering docking ring to rotate, and the internal chamfering knife in the internal chamfering docking groove is fixed with the help of the internal chamfering pin. Multiple internal chamfering knives distributed in a ring work together to perform internal chamfering processing on the port of the cold-bent welded pipe body.

[0021] Compared with the prior art, the chamfering device for the cold-bent welded pipe port provided by the utility model has the following features:

[0022] Beneficial effects:

[0023] 1. This chamfering device for the cold-bent welded pipe end is equipped with not only an outer chamfering assembly for the cold-bent welded pipe but also an inner chamfering assembly for the cold-bent welded pipe. It can chamfer both the outer diameter surface and the inner diameter surface of the cold-bent welded pipe body. Compared with the existing technology, it has more functions and higher practicality. Customers can choose inner chamfer or outer chamfer according to actual conditions, which is suitable for promotion and use.

[0024] 2. The chamfering device of the cold-bent welded pipe port, the collection box, the vacuum suction pump, the first connecting pipe, the second connecting pipe and the dust collection box are connected to each other, and the collection box is located at the bottom of the through-groove and is interconnected with the through-groove. During the chamfering process, the dust and debris generated can be effectively collected to keep the working environment clean;

[0025] 3. The chamfering device of the cold-bent welded pipe port has multiple inner chamfering knives distributed in a ring line working together to perform inner chamfering on the port of the cold-bent welded pipe body, and multiple outer chamfering knives distributed in a ring line working together to perform outer chamfering on the port of the cold-bent welded pipe body. The inner chamfering knives and outer chamfering knives distributed in a ring line structure can better chamfer the cold-bent welded pipe and are highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the chamfering device for the cold-bent welded pipe port in the utility model from a first perspective;

[0027] Figure 2This is a schematic diagram of the third perspective structure of the chamfering device for the cold-bent welded pipe port of the present invention;

[0028] Figure 3 This is a schematic diagram of the third-view perspective structure of the chamfering device for the cold-bent welded pipe port of the present invention;

[0029] Figure 4 This is a first-perspective schematic diagram of the installation structure of the cold-bent welded pipe outer chamfering component and the cold-bent welded pipe inner chamfering component of the chamfering device for the cold-bent welded pipe port in the present invention;

[0030] Figure 5 This is a schematic diagram of the installation structure of the collection box of the chamfering device of the cold-bent welded pipe port in the utility model;

[0031] Figure 6 This is a schematic diagram of the dust box installation structure of the chamfering device for the cold-bent welded pipe port in the utility model;

[0032] Figure 7 This is a second perspective schematic diagram of the installation structure of the cold-bent welded pipe outer chamfering component and the cold-bent welded pipe inner chamfering component of the chamfering device for the cold-bent welded pipe port in the present invention;

[0033] Figure 8 This is a schematic diagram of the installation structure of the cold-bent welded pipe clamping assembly of the chamfering device for the cold-bent welded pipe port in the utility model;

[0034] Figure 9 It is a schematic diagram of the three-dimensional structure of the cold-bent welded pipe outer chamfering component and the cold-bent welded pipe inner chamfering component of the chamfering device of the cold-bent welded pipe port in the present invention;

[0035] Figure 10 This is a schematic diagram of the disassembled structure of the cold-bent welded pipe outer chamfering assembly of the chamfering device for the cold-bent welded pipe port in the utility model;

[0036] Figure 11 This is a schematic diagram of the disassembled structure of the cold-bent welded pipe inner chamfering component of the chamfering device for the cold-bent welded pipe port in the utility model.

[0037] Wherein: 1. Frame; 2. Side cabinet door; 3. Front cabinet door; 4. Universal wheel; 5. Support column; 6. Control box; 7. Vacuum pump; 8. First connecting pipe; 9. Second connecting pipe; 10. Dust collection box; 11. Air filter window; 12. Enclosure; 13. Shiftable first transmission assembly; 1301. Outer box; 1302. Drive motor; 1303. First pulley; 1304. Second pulley; 1305. Drive belt; 14. Shiftable second transmission assembly; 15. Cold-bent welded pipe clamping assembly; 1501. Cold-bent welded pipe clamping seat; 1502. Hydraulic cylinder; 1503. First arched clamping block; 1504. Second arch clamping block; 1505. Rubber strip; 16. Cold-bent welded pipe body; 17. Through-hole; 18. Collection box; 19. Cold-bent welded pipe external chamfer assembly; 1901. External chamfer rotating shaft; 1902. External chamfer docking ring; 1903. External chamfer docking groove; 1904. External chamfering knife; 1905. External chamfering pin; 20. Cold-bent welded pipe internal chamfer assembly; 2001. Internal chamfer rotating shaft; 2002. Internal chamfer docking ring; 2003. Internal chamfer docking groove; 2004. Internal chamfering knife; 2005. Internal chamfering pin; 21. Bearing seat; 22. Baffle; 23. Electric guide rail. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] like Figures 1-11As shown, the utility model provides a chamfering device for the end of a cold-bent welded pipe, comprising a frame 1 and a universal wheel 4 and a support column 5 at the lower part of the frame 1, a displaceable first transmission component 13 and a displaceable second transmission component 14 at the upper part of the frame 1, and a baffle 22 on the front side of the displaceable first transmission component 13 and the displaceable second transmission component 14, an end of the frame 1 away from the universal wheel 4 and the support column 5 is fixedly mounted with a panel 12, the upper part of the frame 1 is located on the inner side of the panel 12 and is provided with the displaceable first transmission component 13 and the displaceable second transmission component 14, the structure of the displaceable first transmission component 13 and the displaceable second transmission component 14 Similarly, the side of the displaceable first transmission component 13 and the displaceable second transmission component 14 near the baffle 22 is provided with a cold-bent welded pipe clamping component 15, the inner side of the cold-bent welded pipe clamping component 15 holds the cold-bent welded pipe body 16, the inner side of the displaceable first transmission component 13 is provided with a cold-bent welded pipe outer chamfering component 19, the inner side of the displaceable second transmission component 14 is provided with a cold-bent welded pipe inner chamfering component 20, the outer sides of the cold-bent welded pipe outer chamfering component 19 and the cold-bent welded pipe inner chamfering component 20 are both provided with bearing seats 21, and the lower parts of the displaceable first transmission component 13 and the displaceable second transmission component 14 are both provided with electric guide rails 23.

[0040] In some embodiments of the present invention, a side cabinet door 2 and a front cabinet door 3 are provided on the outer side of the lower part of the frame 1 in the chamfering device, a control box 6 is fixedly installed on the side of the frame 1 close to the enclosure 12, a collecting box 18 is fixedly installed on the top of the inside of the frame 1, a first connecting pipe 8 is fixedly installed on the end of the collecting box 18 away from the frame 1, a vacuum dust pump 7 is installed on the end of the first connecting pipe 8 away from the collecting box 18, a second connecting pipe 9 is fixedly installed on the air outlet end of the vacuum dust pump 7, a dust box 10 is installed on the end of the second connecting pipe 9 away from the vacuum dust pump 7, an air filter window 11 is provided on the side of the dust box 10 away from the vacuum dust pump 7, and a through groove 17 is provided on the top of the frame 1, the shiftable first transmission assembly 13 and the shiftable second transmission assembly 14.

[0041] In the chamfering device configured in this way, the universal wheels 4 and support columns 5 at the bottom of the frame 1 make the device easy to move and stably placed, the side cabinet doors 2 and the front cabinet doors 3 facilitate maintenance and inspection of the interior of the frame 1, and the enclosure 12 can prevent debris from falling to the ground.

[0042] See Figure 5 and 6 In this chamfering device, the collection box 18, the vacuum pump 7, the first connecting pipe 8, the second connecting pipe 9 and the dust collection box 10 are interconnected. The collection box 18 is located at the lower part of the through groove 17, and the collection box 18 and the through groove 17 are interconnected.

[0043] In the chamfering device configured in this way, the collecting box 18, the vacuum pump 7, the first connecting pipe 8, the second connecting pipe 9 and the dust collecting box 10 are connected to each other, and the collecting box 18 is located at the lower part of the through groove 17 and is interconnected with the through groove 17. During the chamfering process, the dust and debris generated can be effectively collected to keep the working environment clean.

[0044] In some embodiments of the present invention, Figure 4 and Figure 7 The displaceable first transmission assembly 13 in this chamfering device includes an outer box 1301, a drive motor 1302, a first pulley 1303, a second pulley 1304 and a transmission belt 1305. The outer box 1301 is fixedly installed on the top of the frame 1, and the drive motor 1302 is rotatably installed on the end away from the cold-bent welded pipe clamping assembly 15. The second pulley 1304 is provided inside the outer box 1301, and a transmission belt 1305 is provided between the second pulley 1304 and the first pulley 1303.

[0045] In the chamfering device set up in this way, the outer box 1301 in the first transmission component 13 can be shifted to protect the internal structure, and the driving motor 1302 drives its cold-bent welded pipe outer chamfering component 19 to operate through the first pulley 1303, the second pulley 1304 and the transmission belt 1305 to provide power for the chamfering operation.

[0046] In some embodiments of the present invention, Figure 8 As shown, the cold-bent welded pipe clamping assembly 15 in the chamfering device specifically includes a cold-bent welded pipe clamping seat 1501, a hydraulic cylinder 1502, a first arch clamping block 1503, a second arch clamping block 1504 and a rubber strip 1505. The first arch clamping block 1503 and the second arch clamping block 1504 are arranged on the inner side of the cold-bent welded pipe clamping seat 1501. The hydraulic cylinder 1502 is fixedly installed on one end of the cold-bent welded pipe clamping seat 1501 away from the first arch clamping block 1503 and the second arch clamping block 1504. The movable end of the hydraulic cylinder 1502 is fixedly connected to the second arch clamping block 1504. The inner diameter surfaces of the first arch clamping block 1503 and the second arch clamping block 1504 are fixedly installed with rubber strips 1505.

[0047] The cold-bent welded pipe clamping seat 1501, hydraulic cylinder 1502, first arched clamping block 1503, second arched clamping block 1504 and rubber strip 1505 in this cold-bent welded pipe clamping assembly 15 cooperate with each other. The hydraulic cylinder 1502 pushes the first arched clamping block 1503 and the second arched clamping block 1504 to work together to firmly clamp the cold-bent welded pipe body 16. The rubber strip 1505 can prevent damage to the cold-bent welded pipe.

[0048] In some embodiments of the present invention, Figure 9 andFigure 10 As shown, the cold-bent welded pipe external chamfering assembly 19 in the chamfering device specifically includes an external chamfering rotating shaft 1901, an external chamfering docking ring 1902, an external chamfering docking groove 1903, an external chamfering knife 1904 and an external chamfering pin 1905. The external chamfering docking ring 1902 is fixedly installed on one end of the external chamfering rotating shaft 1901 close to the cold-bent welded pipe clamping assembly 15. The external chamfering docking ring 1902 is provided with an external chamfering docking groove 1903 on one side close to the cold-bent welded pipe clamping assembly 15. The external chamfering knife 1904 is plugged and installed inside the external chamfering docking groove 1903. An external chamfering pin 1905 is provided between the external chamfering docking ring 1902 and the external chamfering knife 1904. A plurality of the same external chamfering knives 1904 are provided, and the plurality of external chamfering knives 1904 are distributed in a ring shape. The inclination angle of the external chamfering knife 1904 is away from the center of the external chamfering docking ring 1902.

[0049] The external chamfering rotating shaft 1901 of the external chamfering assembly 19 of the cold-bent welded pipe drives the external chamfering docking ring 1902 to rotate, and the external chamfering knife 1904 in the external chamfering docking groove 1903 is fixed by the external chamfering pin 1905. Multiple external chamfering knives 1904 distributed in a ring line can efficiently perform external chamfering processing on the port of the cold-bent welded pipe body 16.

[0050] In some embodiments of the present invention, Figure 9 and Figure 11 As shown, the cold-bent welded pipe inner chamfering assembly 20 in the chamfering device specifically includes an inner chamfering rotating shaft 2001, an inner chamfering docking ring 2002, an inner chamfering docking groove 2003, an inner chamfering knife 2004 and an inner chamfering pin 2005. The inner chamfering rotating shaft 2001 is fixedly installed with an inner chamfering docking ring 2002 at one end close to the cold-bent welded pipe clamping assembly 15. The inner chamfering docking ring 2002 is provided with an inner chamfering docking groove 2003 on one side close to the cold-bent welded pipe clamping assembly 15. The inner chamfering knife 2004 is plugged into the inner chamfering docking groove 2003. An inner chamfering pin 2005 is provided between the inner chamfering knife 2004 and the inner chamfering docking ring 2002. A plurality of the same inner chamfering knives 2004 are provided, and the plurality of inner chamfering knives 2004 are distributed in a ring shape. The inclination angle of the inner chamfering knife 2004 is close to the center of the inner chamfering docking ring 2002.

[0051] In the internal chamfering assembly 20 of the cold-bent welded pipe, the internal chamfering rotating shaft 2001 plays a driving role, driving the internal chamfering docking ring 2002 to rotate, and the internal chamfering knife 2004 in the internal chamfering docking groove 2003 is fixed with the help of the internal chamfering pin 2005. Multiple internal chamfering knives 2004 distributed in a ring line work together to perform internal chamfering processing on the port of the cold-bent welded pipe body 16.

[0052] When using the chamfering device for the cold-bent welded pipe port formed based on the above-mentioned scheme, the staff first judges the cold-bent welded pipe body 16, whether to chamfer the outer diameter surface of the cold-bent welded pipe body 16 or the inner diameter surface of the cold-bent welded pipe body 16. When it is necessary to chamfer the outer diameter surface of the cold-bent welded pipe body 16, the staff first uses the control box 6 to open the hydraulic cylinder 1502 on the front side of the shiftable first transmission component 13. The hydraulic cylinder 1502 drives the first arch clamping block 1503 to rise, and inserts the cold-bent welded pipe body 16 that needs to be chamfered externally into the interior of the cold-bent welded pipe clamping seat 1501 until the cold-bent welded pipe body 16 and the outer chamfering knife 1904 conflict with each other.

[0053] Then the hydraulic cylinder 1502 pushes the first arch clamping block 1503 to move downward, and the cold-bent welded pipe body 16 is clamped with the cooperation of the first arch clamping block 1503 and the second arch clamping block 1504. Then the control box 6 is used to turn on the drive motor 1302 in the shiftable first transmission assembly 13, and the outer chamfering rotating shaft 1901 is driven to rotate by the drive motor 1302 and the first pulley 1303, the second pulley 1304 and the transmission belt 1305. The outer chamfering rotating shaft 1901 drives the outer chamfering knife 1904 through the outer chamfering docking ring 1902 to chamfer the outer diameter surface of the cold-bent welded pipe body 16.

[0054] During the chamfering process, the electric guide rail 23 drives the displaceable first transmission component 13 to move forward. When the inner diameter surface of the cold-bent welded pipe body 16 needs to be chamfered, the staff first uses the control box 6 to open the hydraulic cylinder 1502 on the front side of the displaceable second transmission component 14. The hydraulic cylinder 1502 drives the first arch clamping block 1503 to rise, and the cold-bent welded pipe body 16 that needs to be chamfered is inserted into the interior of the cold-bent welded pipe clamping seat 1501 until the cold-bent welded pipe body 16 and the inner chamfering knife 2004 conflict with each other. The displaceable second transmission component 14 drives the inner chamfering knife 2004 to rotate through the inner chamfering rotating shaft 2001 and the inner chamfering docking ring 2002. At this time, the cold-bent welded pipe body 16 can be chamfered. During the chamfering process, the electric guide rail 23 drives the displaceable second transmission component 14 to move forward.

[0055] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A chamfering device for cold-bent welded pipe ends, comprising a frame (1), a universal wheel (4) and a support column (5) at the lower portion of the frame (1), a displaceable first transmission assembly (13) and a displaceable second transmission assembly (14) at the upper portion of the frame (1), and a baffle (22) at the front side of the displaceable first transmission assembly (13) and the displaceable second transmission assembly (14), characterized in that: A panel (12) is fixedly mounted on one end of the frame (1) away from the universal wheel (4) and the support column (5); a first displaceable transmission assembly (13) and a second displaceable transmission assembly (14) are provided on the upper part of the frame (1) on the inner side of the panel (12); the first displaceable transmission assembly (13) and the second displaceable transmission assembly (14) have the same structure; a cold-bent welded pipe clamping assembly (15) is provided on one side of the first displaceable transmission assembly (13) and the second displaceable transmission assembly (14) close to the baffle (22); The inner side of the pipe clamping assembly (15) clamps the cold-bent welded pipe body (16), the inner side of the displaceable first transmission assembly (13) is provided with a cold-bent welded pipe outer chamfering assembly (19), the inner side of the displaceable second transmission assembly (14) is provided with a cold-bent welded pipe inner chamfering assembly (20), the outer sides of the cold-bent welded pipe outer chamfering assembly (19) and the cold-bent welded pipe inner chamfering assembly (20) are both provided with bearing seats (21), and the lower parts of the displaceable first transmission assembly (13) and the displaceable second transmission assembly (14) are both provided with electric guide rails (23).

2. The chamfering device for cold-bent welded pipe ends according to claim 1, characterized in that: The outer side of the lower part of the frame (1) is provided with a side cabinet door (2) and a front cabinet door (3); a control box (6) is fixedly installed on the side of the frame (1) close to the enclosure (12); a collecting box (18) is fixedly installed on the top of the inside of the frame (1); a first connecting pipe (8) is fixedly installed on the end of the collecting box (18) away from the frame (1); a vacuum pump (7) is installed on the end of the first connecting pipe (8) away from the collecting box (18); a second connecting pipe (9) is fixedly installed on the air outlet end of the vacuum pump (7); a dust collecting box (10) is installed on the end of the second connecting pipe (9) away from the vacuum pump (7); an air filter window (11) is provided on the side of the dust collecting box (10) away from the vacuum pump (7); and a through slot (17) is provided on the top of the frame (1), the displaceable first transmission assembly (13) and the displaceable second transmission assembly (14).

3. The chamfering device for cold-bent welded pipe ends according to claim 2, characterized in that: The collecting box (18), the vacuum pump (7), the first connecting pipe (8), the second connecting pipe (9) and the dust collecting box (10) are interconnected. The collecting box (18) is located at the lower part of the through-groove (17). The collecting box (18) and the through-groove (17) are interconnected.

4. The chamfering device for cold-bent welded pipe ends according to claim 3, characterized in that: The displaceable first transmission assembly (13) comprises an outer box (1301), a driving motor (1302), a first pulley (1303), a second pulley (1304) and a transmission belt (1305); the outer box (1301) is fixedly mounted on the top of the frame (1); the first pulley (1303) is rotatably mounted on one end of the driving motor (1302) away from the cold-bent welded pipe clamping assembly (15); the second pulley (1304) is arranged inside the outer box (1301); and a transmission belt (1305) is arranged between the second pulley (1304) and the first pulley (1303).

5. The chamfering device for cold-bent welded pipe ends according to claim 4, characterized in that: The cold-bent welded pipe clamping assembly (15) comprises a cold-bent welded pipe clamping seat (1501), a hydraulic oil cylinder (1502), a first arched clamping block (1503), a second arched clamping block (1504) and a rubber strip (1505). The first arched clamping block (1503) and the second arched clamping block (1504) are arranged on the inner side of the cold-bent welded pipe clamping seat (1501). The hydraulic oil cylinder (1502) is fixedly installed on one end of the cold-bent welded pipe clamping seat (1501) away from the first arched clamping block (1503) and the second arched clamping block (1504). The movable end of the hydraulic oil cylinder (1502) is fixedly connected to the second arched clamping block (1504). The inner diameter surfaces of the first arched clamping block (1503) and the second arched clamping block (1504) are fixedly installed with rubber strips (1505).

6. The chamfering device for cold-bent welded pipe ends according to claim 1, characterized in that: The cold-bent welded pipe external chamfer assembly (19) comprises an external chamfer rotating shaft (1901), an external chamfer docking ring (1902), an external chamfer docking groove (1903), an external chamfering knife (1904) and an external chamfering pin (1905). The external chamfer docking ring (1902) is fixedly mounted on one end of the external chamfer rotating shaft (1901) close to the cold-bent welded pipe clamping assembly (15). The external chamfer docking ring (1902) is provided with a side close to the cold-bent welded pipe clamping assembly (15). An external chamfer docking groove (1903), an external chamfering knife (1904) is installed inside the external chamfer docking groove (1903), an external chamfering pin (1905) is provided between the external chamfer docking ring (1902) and the external chamfering knife (1904), a plurality of the same external chamfering knives (1904) are provided, and the plurality of external chamfering knives (1904) are distributed in a circular line, and the inclination angle of the external chamfering knife (1904) is away from the center of the external chamfer docking ring (1902).

7. The chamfering device for cold-bent welded pipe ends according to claim 1, characterized in that: The cold-bent welded pipe inner chamfer assembly (20) comprises an inner chamfer rotating shaft (2001), an inner chamfer butt joint ring (2002), an inner chamfer butt joint groove (2003), an inner chamfer knife (2004) and an inner chamfer latch (2005); the inner chamfer butt joint ring (2002) is fixedly mounted on one end of the inner chamfer rotating shaft (2001) close to the cold-bent welded pipe clamping assembly (15); and the inner chamfer butt joint ring (2002) is provided on one side close to the cold-bent welded pipe clamping assembly (15). An inner chamfer docking groove (2003), an inner chamfering knife (2004) is installed inside the inner chamfer docking groove (2003), an inner chamfering pin (2005) is provided between the inner chamfering knife (2004) and the inner chamfer docking ring (2002), a plurality of the same inner chamfering knives (2004) are provided, and the plurality of inner chamfering knives (2004) are distributed in a circular line, and the inclination angle of the inner chamfering knife (2004) is close to the center of the inner chamfer docking ring (2002).

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