Pipe fitting end face chamfering device

Abstract

The invention belongs to the technical field of pipe fitting chamfering, and discloses a pipe fitting end face chamfering device which comprises two mounting boxes, the interiors of the two mounting boxes are fixedly connected with driving motors, the output ends of the driving motors are fixedly connected with hydraulic rods, and one ends of the hydraulic rods are fixedly connected with chamfering discs. By rotating a first rotating opening, after the first rotating opening rotates, two first chamfering blocks are driven by a series of transmission to synchronously rotate along a fixed shaft as a fixed point, so that the chamfering angles of the outer circle of a metal pipe fitting are equal, the machining consistency is guaranteed, meanwhile, a second rotating opening can be rotated, and the second rotating opening rotates to drive a sliding block to move; the sliding block moves to eject out the second chamfering block, so that the opening angle of the second chamfering block can be controlled by rotating the first rotating opening during machining, different chamfering parameters are adjusted according to needs, machining is prevented from being limited, and therefore the machining efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe chamfering, and in particular relates to a pipe end face chamfering device. Background Art

[0002] Pipe fittings are steel with hollow cross-sections and lengths much larger than their diameters or circumferences. They are classified into round, square, rectangular and special-shaped pipe fittings according to their cross-sectional shapes. They are classified into carbon structural pipe fittings, low alloy structural pipe fittings, alloy pipe fittings and composite pipe fittings according to their materials. They are classified into seamless pipe fittings and welded pipe fittings according to their production processes, of which seamless pipe fittings are further classified into hot-rolled and cold-rolled, and welded pipe fittings are further classified into straight-seam welded pipe fittings and spiral-seam welded pipe fittings. In the processing of some steel circular pipes, the end faces of the pipe fittings need to be chamfered to facilitate their connection and use.

[0003] However, there are still some problems in the actual use of the existing pipe end chamfering device: first, when the existing chamfering device chamfers the tubular fitting, it mostly uses a fixed chamfering head to chamfer the pipe fitting, and different pipe fitting materials may require different chamfering parameters during the processing. When the chamfering parameters need to be changed, the pipe fitting cannot be processed quickly, resulting in processing limitations, thereby reducing processing efficiency and economic benefits; secondly, the existing chamfering processing device is more troublesome when processing internal chamfers and external chamfers, and cannot quickly process internal and external chamfers, resulting in low production efficiency of pipe fittings. Summary of the invention

[0004] The object of the present invention is to provide a pipe end face chamfering device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe end chamfering device, comprising two installation boxes, the two installation boxes are fixedly connected with a driving motor inside, the output end of the driving motor is fixedly connected with a hydraulic rod, one end of the hydraulic rod is fixedly connected with a chamfering disk, the chamfering disk is rotatably connected with a screw rod, the two ends of the screw rod are respectively fixedly connected with two first rotating ports, the outer side of the screw rod is respectively threadedly connected with two moving blocks, one side of the two moving blocks is hinged with a first chamfering block, one side of the two first chamfering blocks is rotatably connected with a fixed shaft, and the fixed The shaft is fixedly connected to the chamfering disk, and a threaded rod is movably sleeved inside the chamfering disk, one end of the threaded rod is fixedly connected to the second rotating port, and a movable block is threadedly connected to the outer side of the threaded rod, and two connecting rods are fixedly connected to both sides of the movable block, and one end of the two connecting rods is provided with a second chamfering block, a sliding groove is provided inside the second chamfering block, and a sliding block is slidably connected inside the sliding groove, the connecting rod is fixedly connected to the sliding block, and two fixed blocks are fixedly connected to one end of the chamfering disk, and the fixed block is hinged to the second chamfering block, and a quantitative feeding assembly is provided on one side of the installation box.

[0006] Preferably, the quantitative feeding assembly includes a mounting plate, which is arranged in the middle of the two mounting boxes, a material storage frame is fixedly connected to one side of the mounting plate, a support frame is fixedly connected to the bottom of the material storage frame, a blocking plate is fixedly connected to the inside of the material storage frame, a placement block is fixedly connected to the top of one side of the mounting plate, a guide block is fixedly connected to one side of the placement block, and a metal pipe is arranged on the top of the placement block.

[0007] Preferably, the quantitative feeding assembly also includes an electric push rod, a placement groove is opened at the bottom of the mounting plate, the electric push rod is arranged inside the placement groove and fixedly connected to the mounting plate, the top of the electric push rod is fixedly connected to a supporting base plate, two first push blocks are fixedly connected to one side of the top of the supporting base plate, and two second push blocks are fixedly connected to the other side of the top of the supporting base plate.

[0008] Preferably, the metal pipe and the chamfering disk are on the same axis, the two first chamfering blocks are respectively arranged corresponding to the two sides of the outer circle of the metal pipe, and the two second chamfering blocks are respectively arranged corresponding to the two sides of the inner circle of the metal pipe.

[0009] Preferably, movable grooves corresponding to the first chamfering block and the second chamfering block are respectively arranged inside the chamfering plate, and the movable blocks are rectangular in shape.

[0010] Preferably, the end face of the second rotating opening is flush with the end face of the chamfered disk, the outer ends of the two first rotating openings are both arc surfaces, and the curvature of the arc surface of the outer end of the first rotating opening is equal to the curvature of the arc surface of the outer end of the chamfered disk.

[0011] Preferably, through grooves are provided inside the blocking plate and the placing block, and the through grooves correspond to the first pushing block and the second pushing block respectively, and the through groove corresponding to one side of the first pushing block fits with one side of the mounting plate.

[0012] Preferably, the top surface height of the placement block is equal to the bottom height of the mounting plate inclined surface, an arc-shaped placement groove is opened in the middle of the placement block, the radius of the arc-shaped placement groove is equal to the metal pipe, and the top of the guide block inclined surface is flush with the placement block.

[0013] The beneficial effects of the present invention are as follows: 1. The present invention rotates the first rotating mouth, and after the first rotating mouth is rotated, a series of transmissions are used to drive the two first chamfering blocks to rotate synchronously along the fixed axis as a fixed point, so that the chamfer angles of the outer circle of the metal pipe are equal to ensure processing consistency. At the same time, the second rotating mouth can be rotated, and the rotation of the second rotating mouth drives the slider to move. After the slider moves, the distance between the movable block and the second chamfering block is shortened, and the connecting rod is fixedly connected to the movable block and the slider. Therefore, after the distance between the movable block and the second chamfering block is shortened, the second chamfering block will be pushed out, so that the angle corresponding to the second chamfering block and the inner circle of the metal pipe is reduced. During processing, the opening angle of the second chamfering block can be controlled by rotating the first rotating mouth, so that different chamfering parameters can be adjusted as needed to avoid processing limitations, thereby improving processing efficiency and improving economic benefits.

[0014] 2. The present invention rotates the first rotating mouth, and after the first rotating mouth is rotated, the two first chamfering blocks will rotate synchronously, so that the chamfer angles of the outer circle of the metal pipe are equal to ensure processing consistency. At the same time, the second rotating mouth can be rotated, and the rotation of the second rotating mouth drives the slider to move. After the slider moves, the distance between the movable block and the second chamfering block is shortened, and the connecting rod is fixedly connected to the movable block and the slider. Therefore, after the distance between the movable block and the second chamfering block is shortened, the second chamfering block will be pushed out, so that the angle corresponding to the second chamfering block and the inner circle of the metal pipe is reduced, so that the opening angle of the second chamfering block can be controlled by rotating the first rotating mouth during processing. During processing, the inner circle chamfer and the outer circle chamfer can be adjusted separately, so that the processing flexibility is improved to adapt to a variety of different processing conditions. At the same time, since the inner and outer circle chamfers are adjusted independently, the processing error of one chamfer will not affect the other chamfer, which helps to maintain the overall processing accuracy.

[0015] 3. The present invention starts the electric push rod, which starts to push the supporting base plate to reciprocate up and down. The movement of the supporting base plate drives the first push block and the second push block to move. The movement of the first push block drives the metal pipe fitting to rise along the side of the mounting plate. When it rises to a certain distance, the metal pipe fitting rolls to the inside of the arc-shaped placement groove in the middle of the placement block, so that the metal pipe fitting can be processed. After the processing is completed, the second push block moves to push the metal pipe fitting out of the arc-shaped placement groove. After ejection, the metal pipe fitting will move along the inclined surface of the guide block due to gravity to complete the discharge. At the same time, the metal pipe fitting inside the storage frame on the other side will push another metal pipe fitting to fit with the side of the mounting plate due to gravity. The feeding work is completed synchronously when the supporting base plate rises, thereby realizing continuous processing of the pipe fittings, greatly improving the production efficiency, and at the same time effectively ensuring that the processing conditions of each pipe fitting are consistent, improving the consistency of processing quality, and ensuring the processing quality.

[0016] 4. The present invention starts the hydraulic rod, which is ejected after being started. The hydraulic rod ejects and drives the chamfering disk to eject. The chamfering disk contacts the two ends of the metal pipe. Due to the symmetrical arrangement of the two chamfering disks, the distances from the two chamfering disks to the two ends of the metal pipe are equal, thereby ensuring the consistency of processing on both sides and ensuring the processing quality. At this time, the drive motor is started, and the drive motor starts to drive the chamfering disk to rotate, and chamfering is performed on the inside and outside of the metal pipe, thereby improving the processing rate and improving the production efficiency of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a cross-sectional view of the chamfered disc of the present invention; Figure 3 For the present invention Figure 2 A magnified view of the structure at center; Figure 4 It is a structural schematic diagram of the slider of the present invention; Figure 5 This is a schematic diagram of the structure of the quantitative feeding component of the present invention; Figure 6 It is a structural schematic diagram of the electric push rod of the present invention; Figure 7 It is a structural schematic diagram of the second push block of the present invention; Figure 8 It is a schematic diagram of the structure of the first chamfering block of the present invention.

[0018] In the figure: 1. installation box; 2. driving motor; 3. hydraulic rod; 4. chamfering disk; 5. first rotating port; 6. screw rod; 7. first chamfering block; 8. fixed shaft; 9. second rotating port; 10. threaded rod; 11. movable block; 12. connecting rod; 13. second chamfering block; 14. sliding groove; 15. slider; 16. fixed block; 17. installation plate; 18. storage frame; 19. support frame; 20. blocking plate; 21. guide block; 22. placement block; 23. metal pipe; 24. electric push rod; 25. support bottom plate; 26. first push block; 27. second push block; 28. moving block. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] like Figures 1 to 7As shown, the embodiment of the present invention provides a pipe end chamfering device, including two installation boxes 1, the two installation boxes 1 are fixedly connected to the inside of the drive motor 2, the output end of the drive motor 2 is fixedly connected to the hydraulic rod 3, one end of the hydraulic rod 3 is fixedly connected to the chamfering plate 4, the chamfering plate 4 is rotatably connected to the inside of the screw rod 6, the two ends of the screw rod 6 are respectively fixedly connected to two first rotating ports 5, the outer side of the screw rod 6 is respectively threadedly connected to two moving blocks 28, one side of the two moving blocks 28 is hinged with a first chamfering block 7, and one side of the two first chamfering blocks 7 is rotatably connected inside There is a fixed shaft 8, the fixed shaft 8 is fixedly connected to the chamfering disk 4, the chamfering disk 4 is provided with a threaded rod 10 movably sleeved inside, one end of the threaded rod 10 is fixedly connected to the second rotating port 9, the outer side of the threaded rod 10 is threadedly connected to a movable block 11, two connecting rods 12 are fixedly connected on both sides of the movable block 11, and one end of the two connecting rods 12 is provided with a second chamfering block 13, a sliding groove 14 is provided inside the second chamfering block 13, and a slider 15 is slidably connected inside the sliding groove 14, the connecting rod 12 is fixedly connected to the slider 15, and one end of the chamfering disk 4 is fixedly connected to Two fixed blocks 16 are hinged with the second chamfering block 13. A quantitative feeding assembly is provided on one side of the installation box 1. By rotating the first rotating port 5, the two first chamfering blocks 7 are driven to move after the first rotating port 5 rotates. When the first chamfering block 7 moves, it will rotate along the fixed axis 8 as a fixed point because of the fixation of the fixed axis 8, so that the outer chamfer angle of the metal pipe 23 is equal during processing to ensure processing consistency. At the same time, the second rotating port 9 can be rotated, and the second rotating port 9 rotates to drive the slider 15 to move. After the slider 15 moves, due to The distance between the movable block 11 and the second chamfering block 13 is shortened, and the connecting rod 12 is fixedly connected to the movable block 11 and the slider 15. Therefore, after the distance between the movable block 11 and the second chamfering block 13 is shortened, the second chamfering block 13 will be pushed out, so that the corresponding angle between the second chamfering block 13 and the inner circle of the metal pipe 23 is reduced. Therefore, during processing, the opening angle of the second chamfering block 13 can be controlled by rotating the first rotating port 5, so as to adjust different chamfering parameters as needed to avoid processing limitations, thereby improving processing efficiency and increasing economic benefits.

[0021] Among them, the quantitative feeding component includes a mounting plate 17, the mounting plate 17 is arranged in the middle of the two mounting boxes 1, a storage frame 18 is fixedly connected to one side of the mounting plate 17, a support frame 19 is fixedly connected to the bottom of the storage frame 18, a blocking plate 20 is fixedly connected inside the storage frame 18, a placement block 22 is fixedly connected to the top of one side of the mounting plate 17, a guide block 21 is fixedly connected to one side of the placement block 22, and a metal pipe fitting 23 is arranged on the top of the placement block 22. The quantitative feeding component also includes an electric push rod 24, a placement groove is opened at the bottom of the mounting plate 17, the electric push rod 24 is arranged inside the placement groove and fixedly connected to the mounting plate 17, a support bottom plate 25 is fixedly connected to the top of the electric push rod 24, two first push blocks 26 are respectively fixedly connected to one side of the top of the support bottom plate 25, and two second push blocks 27 are respectively fixedly connected to the other side of the top of the support bottom plate 25. By starting the electric push rod 24, the electric push rod 24 starts to push the support bottom plate 2 5 reciprocates up and down, the support bottom plate 25 moves to drive the first push block 26 and the second push block 27 to move, the first push block 26 moves to drive the metal pipe 23 to rise along the side of the mounting plate 17, and when it rises to a certain distance, the metal pipe 23 rolls to the arc-shaped placement groove in the middle of the placement block 22 for processing. After the processing is completed, the second push block 27 moves to push the metal pipe 23 out of the arc-shaped placement groove. After being ejected, the metal pipe 23 moves along the inclined surface of the guide block 21 due to gravity to complete the discharge. At the same time, the metal pipe 23 inside the material storage frame 18 on the other side will push another metal pipe 23 to fit with the side of the mounting plate 17 due to gravity. The feeding work is completed synchronously when the support bottom plate 25 rises, thereby realizing continuous processing of the pipe fittings, greatly improving the production efficiency, and effectively ensuring that the processing conditions of each pipe fitting are consistent, improving the consistency of the processing quality, and ensuring the processing quality.

[0022] Among them, the metal pipe fitting 23 and the chamfering disk 4 are on the same axis, the two first chamfering blocks 7 are respectively arranged corresponding to the two sides of the outer circle of the metal pipe fitting 23, and the two second chamfering blocks 13 are respectively arranged corresponding to the two sides of the inner circle of the metal pipe fitting 23. The inside of the chamfering disk 4 is respectively provided with movable grooves corresponding to the first chamfering blocks 7 and the second chamfering blocks 13. The shape of the movable block 11 is rectangular. By arranging the metal pipe fitting 23 and the chamfering disk 4 on the same axis, it can better correspond to the outer surface and inner surface of the metal pipe fitting 23 during processing, and the chamfer can be better processed during processing.

[0023] Among them, the end face of the second rotating port 9 is flush with the end face of the chamfered disk 4, and the outer ends of the two first rotating ports 5 are both arc surfaces. The curvature of the arc surface of the outer end of the first rotating port 5 is equal to the curvature of the arc surface of the outer end of the chamfered disk 4. By setting the curvature of the arc surface of the outer end of the first rotating port 5 to be equal to the curvature of the arc surface of the outer end of the chamfered disk 4, the outer surface of the chamfered disk 4 can be made into a standard circle, which is more beautiful in appearance, and there will be no protrusions during processing, avoiding the possibility of safety hazards caused by protrusions during processing.

[0024] Among them, through grooves are opened inside the blocking plate 20 and the placing block 22, and the through grooves correspond to the first push block 26 and the second push block 27 respectively. The through groove corresponding to one side of the first push block 26 is in contact with one side of the mounting plate 17. By setting the through groove corresponding to one side of the first push block 26 in contact with one side of the mounting plate 17, the first push block 26 can prevent the metal pipe 23 from slipping when it rises to push the metal pipe 23, thereby affecting the pushing effect.

[0025] Among them, the top surface height of the placement block 22 is equal to the bottom height of the inclined surface of the mounting plate 17, an arc-shaped placement groove is opened in the middle of the placement block 22, the radius of the arc-shaped placement groove is equal to the metal pipe fitting 23, and the top of the inclined surface of the guide block 21 is flush with the placement block 22. By making the top surface height of the placement block 22 equal to the bottom height of the inclined surface of the mounting plate 17 and the top of the inclined surface of the guide block 21 is flush with the placement block 22, the pipe fitting can be better pushed during processing, thereby realizing automated transportation, improving production efficiency, and accelerating the processing rate. By setting the radius of the arc-shaped placement groove equal to that of the metal pipe fitting 23, the pipe fitting can be better positioned by the arc-shaped placement groove when rolling from the surface of the mounting plate 17 to the surface of the placement block 22.

[0026] Working principle: The metal pipe 23 inside the material storage frame 18 rolls down through the bottom of the blocking plate 20 to the position where it fits with the mounting plate 17. At this time, the electric push rod 24 is started, and the electric push rod 24 starts to push the supporting bottom plate 25 to reciprocate up and down. The supporting bottom plate 25 moves to drive the first push block 26 and the second push block 27 to move. After the first push block 26 moves through the through groove, it contacts the metal pipe 23. The first push block 26 continues to move to drive the metal pipe 23 to rise along the side of the mounting plate 17. After rising to a certain distance, the metal pipe 23 rolls down along the top inclined surface of the mounting plate 17 to the inside of the arc-shaped placement groove in the middle of the placement block 22 for processing. After the processing is completed, the supporting bottom plate 25 moves to drive the second push block 27 to move. The second push block 27 moves, and after the second push block 27 moves through the through groove inside the placement block 22, it will push the metal pipe 23 out of the arc-shaped placement groove. After being pushed out, due to the inclined surface setting of the second push block 27 and the influence of gravity, the inclined surface of the guide block 21 will move to complete the discharge. At the same time, the metal pipe 23 inside the storage frame 18 on the other side will push the other metal pipe 23 to fit with the side of the mounting plate 17 due to gravity. When the supporting bottom plate 25 rises, the feeding is completed synchronously, so that the continuous processing of the pipe can be realized, which greatly improves the production efficiency. At the same time, it can effectively ensure that the processing conditions of each pipe are consistent, improve the consistency of the processing quality, and ensure the processing quality; When the metal pipe 23 moves to the inside of the arc-shaped placement groove, by rotating the first rotating mouth 5, the first rotating mouth 5 rotates to drive the screw rod 6 to rotate, the screw rod 6 rotates to drive the moving block 28 to move, the moving block 28 moves and drives the first chamfering block 7 to move, when the first chamfering block 7 moves, it will rotate along the fixed axis 8 as a fixed point because the fixed axis 8 is fixed, and because the two first chamfering blocks 7 are symmetrically arranged, after rotating the first rotating mouth 5, the two first chamfering blocks 7 will rotate synchronously, so that the outer chamfer angles of the metal pipe 23 are equal, and at the same time, the second rotating mouth 9 can be rotated, and the second rotating mouth 9 rotates to drive the movable block 11 to move, and the movable block 11 moves to drive the connecting rod 1 The connecting rod 12 moves, and the movement of the connecting rod 12 drives the slider 15 to move. After the slider 15 moves, the distance between the movable block 11 and the second chamfering block 13 is shortened, and the connecting rod 12 is fixedly connected to the movable block 11 and the slider 15. Therefore, after the distance between the movable block 11 and the second chamfering block 13 is shortened, the second chamfering block 13 will be ejected, so that the corresponding angle between the second chamfering block 13 and the inner circle of the metal pipe 23 is reduced, so that during processing, the opening angle of the second chamfering block 13 can be controlled by rotating the first rotating port 5, so as to adjust different chamfering parameters as needed, avoid processing limitations, thereby improving processing efficiency and improving economic benefits; After the adjustment is completed, the hydraulic rod 3 is started. The hydraulic rod 3 is pushed out after being started. The hydraulic rod 3 pushes out and drives the chamfering plate 4 to be pushed out. The chamfering plate 4 is pushed out and contacts with the two ends of the metal pipe 23. Due to the symmetrical arrangement of the two chamfering plates 4, the distances from the two chamfering plates 4 to the two ends of the metal pipe 23 are equal, thereby ensuring the consistency of the processing on both sides and ensuring the processing quality. At this time, the drive motor 2 is started, and the drive motor 2 starts to drive the chamfering plate 4 to rotate, and chamfering is performed on the inside and outside of the metal pipe 23, thereby improving the processing rate and improving the production efficiency of the pipe.

[0027] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe end face chamfering device, comprising two mounting boxes (1), characterized in that: The two installation boxes (1) are fixedly connected to a drive motor (2) inside, the output end of the drive motor (2) is fixedly connected to a hydraulic rod (3), one end of the hydraulic rod (3) is fixedly connected to a chamfering disk (4), the chamfering disk (4) is rotatably connected to a screw rod (6), the two ends of the screw rod (6) are respectively fixedly connected to two first rotating ports (5), the outer side of the screw rod (6) is respectively threadedly connected to two moving blocks (28), one side of the two moving blocks (28) is hinged to a first chamfering block (7), one side of the two first chamfering blocks (7) is rotatably connected to a fixed shaft (8), the fixed shaft (8) is fixedly connected to the chamfering disk (4), the chamfering disk (4) is provided with a threaded rod (1) movably sleeved inside. 0), one end of the threaded rod (10) is fixedly connected to a second rotating port (9), the outer side of the threaded rod (10) is threadedly connected to a movable block (11), two connecting rods (12) are fixedly connected to the two sides of the movable block (11), one end of each of the two connecting rods (12) is provided with a second chamfering block (13), a sliding groove (14) is provided inside the second chamfering block (13), a sliding block (15) is slidably connected inside the sliding groove (14), the connecting rod (12) and the sliding block (15) are fixedly connected, one end of the chamfering plate (4) is fixedly connected to two fixed blocks (16), the fixed block (16) is hinged to the second chamfering block (13), and a quantitative feeding component is provided on one side of the installation box (1).

2. A pipe end chamfering device according to claim 1, characterized in that: The quantitative feeding assembly comprises a mounting plate (17), the mounting plate (17) being arranged in the middle of two mounting boxes (1), a material storage frame (18) being fixedly connected to one side of the mounting plate (17), a support frame (19) being fixedly connected to the bottom of the material storage frame (18), a blocking plate (20) being fixedly connected inside the material storage frame (18), a placement block (22) being fixedly connected to the top of one side of the mounting plate (17), a guide block (21) being fixedly connected to one side of the placement block (22), and a metal pipe fitting (23) being arranged on the top of the placement block (22).

3. A pipe end chamfering device according to claim 2, characterized in that: The quantitative feeding assembly further comprises an electric push rod (24), a placement groove is provided at the bottom of the mounting plate (17), the electric push rod (24) is arranged inside the placement groove and is fixedly connected to the mounting plate (17), the top of the electric push rod (24) is fixedly connected to a support base plate (25), one side of the top of the support base plate (25) is respectively fixedly connected to two first push blocks (26), and the other side of the top of the support base plate (25) is respectively fixedly connected to two second push blocks (27).

4. A pipe end chamfering device according to claim 3, characterized in that: The metal pipe (23) and the chamfering plate (4) are located on the same axis, the two first chamfering blocks (7) are respectively arranged corresponding to the two sides of the outer circle of the metal pipe (23), and the two second chamfering blocks (13) are respectively arranged corresponding to the two sides of the inner circle of the metal pipe (23).

5. A pipe end chamfering device according to claim 4, characterized in that: The chamfering plate (4) is provided with movable grooves corresponding to the first chamfering block (7) and the second chamfering block (13) respectively, and the movable block (11) is rectangular in shape.

6. A pipe end chamfering device according to claim 5, characterized in that: The end surface of the second rotating opening (9) is flush with the end surface of the chamfered disk (4), the outer ends of the two first rotating openings (5) are both arc surfaces, and the curvature of the arc surface at the outer end of the first rotating opening (5) is equal to the curvature of the arc surface at the outer end of the chamfered disk (4).

7. A pipe end chamfering device according to claim 6, characterized in that: The blocking plate (20) and the placement block (22) are both provided with through grooves, the through grooves corresponding to the first push block (26) and the second push block (27) respectively, and the through groove corresponding to one side of the first push block (26) fits with one side of the mounting plate (17).

8. A pipe end chamfering device according to claim 7, characterized in that: The height of the top surface of the placement block (22) is equal to the bottom height of the inclined surface of the mounting plate (17); an arc-shaped placement groove is provided in the middle of the placement block (22); the radius of the arc-shaped placement groove is equal to that of the metal pipe (23); and the top of the inclined surface of the guide block (21) is flush with the placement block (22).

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