A pipe cutting device

Abstract

The present invention provides a pipe cutting device, which relates to the field of pipe shearing, and includes: a drive plate, which rotates around a first axis and moves along the first axis; two inner clamping columns, each of which has a mating opening on one side and slides with the two sides of the drive plate, the inner clamping columns are connected to a first mounting bar, the first mounting bar is connected to a drive rod, the drive rod is connected to a first slider, a first slider is provided on the wider end of the drive plate, the first slider is slidably sleeved on the first slider, the first two ends of the first slider are respectively connected to the first mounting plate, and a spring is coaxially sleeved on the circumference of the first slider; two outer clamping columns are respectively arranged parallel to the two inner clamping columns and the spacing is adjustable; a cutting disk, the center axis of which is spaced parallel to the first axis and the spacing is adjustable, the cutting disk rotates around its own center axis and moves along the first axis. The present invention can stably clamp metal pipes of different models and efficiently cut metal pipes, is simple to operate, and has strong practicality.

Description

Technical Field

[0001] The present application relates to the field of pipe shearing, and in particular to a pipe shearing device. Background Art

[0002] When designing and manufacturing an automation control system, a variety of metal pipe fittings are required to ensure the normal operation of the automation instruments. Since different automation instruments are located in different positions in the system, it is necessary to first cut the pipe fittings into a specified length, then bend the pipe fittings into a specified shape, and finally connect them to the specified automation instrument and weld them into the automation control system.

[0003] At present, the shearing of metal pipe fittings is generally performed by manually measuring the shearing point, fixing the metal pipe fitting, and performing the pipe shearing operation at the shearing point by manually holding a pipe cutter. This pipe cutter manually rotates the cutting disk and continuously rolls at the shearing point, while applying pressure to the shearing point to complete the shearing. The fixing of metal pipe fittings generally adopts a conventional clamping mechanism to clamp the outer wall of the pipe fitting. This fixing method is prone to unstable clamping and can easily cause deformation of the metal pipe fitting if the clamping force is too large. In addition, during the shearing process, the cutting disk needs to be manually rotated around the central axis of the pipe fitting. At the same time, the distance between the cutting disk and the central axis of the metal pipe fitting needs to be manually adjusted to maintain the pressure of the cutting disk on the metal pipe fitting. The operation process is relatively cumbersome, affecting the efficiency of pipe shearing. Summary of the Invention

[0004] In order to solve the above-mentioned defects of the related prior art, the present application provides a pipe cutting device that can stably clamp metal pipes of different models and efficiently cut the metal pipes, is simple to operate, and has strong practicality.

[0005] In order to achieve the above object, the present invention adopts the following technologies:

[0006] A pipe cutting device, comprising:

[0007] The driving plate has two symmetrical oblique sides, and a central axis of the driving plate parallel to its own plate surface is set as a first axis. The driving plate is rotated around the first axis and moved along the first axis.

[0008] The two guide wheels are connected to each other with a first end in contact with each other, and the two guide wheels are connected with a first end in contact with each other, and the two guide wheels are connected with a first end in contact with each other, and the two guide wheels are connected with a first end in contact with each other.

[0009] Two outer clamping columns are respectively arranged outside the two sides of the driving plate and rotate with the driving plate. The two outer clamping columns are both cylindrical. The two outer clamping columns are respectively arranged parallel to the two inner clamping columns along the width direction and the spacing is adjustable;

[0010] The cutting disk has a central axis as a second axis, the second axis is parallel to the first axis and the spacing is adjustable, and the cutting disk is rotated around the second axis and moved along the first axis.

[0011] Furthermore, a rotating head is provided on the outside of the large end of the driving plate coaxially with the first axis, and the rotating head is fixed in the axial direction of the first axis. First mounting brackets are respectively provided on the outside of both sides of the driving plate, and a first connecting rod is connected between the first mounting bracket and the rotating head. A first electric screw and a second sliding rod parallel to the first axis are respectively provided in the two first mounting brackets, the first electric screw is threadedly matched with a first matching block, and the second sliding rod is slidably matched with a second slider, a connecting plate is connected between the first matching block and the second slider, and the connecting plate is connected to the large end of the driving plate. The two first mounting plates are respectively provided on the two first mounting brackets, and the rotating head is rotatably arranged around the first axis.

[0012] Furthermore, the two first mounting frames are connected to the mounting blocks, the mounting blocks are connected to the second connecting rod, the second connecting rod is connected to the second mounting plate, the opposite sides of the two second mounting plates are rotatably connected to two first screws with opposite threads, the two first screws are parallel to the width direction, and the opposite ends of the two first screws are connected by a coupling, one of the second mounting plates is provided with a first rotating motor, and the driving shaft of the first rotating motor is coaxially connected to the corresponding first screw, the two first screws are threadedly matched with the second matching blocks, and the second matching blocks are connected to the third slider, and the third slide bar is connected between the two second mounting plates along the width direction, the third slide bar is slidably mounted on the third slide bar, the two second matching blocks are connected to the first support frame, and the two outer clamping columns are respectively connected to the two first support frames.

[0013] Furthermore, it also includes a support plate, which is fixed to the mounting surface of the equipment. The support plate is provided with a second rotating motor and a bearing seat coaxial with the first axis. The driving end of the second rotating motor is coaxially connected to a rotating column, which is coaxially passed through the bearing seat and coaxially connected to the rotating head.

[0014] The transmission gear is connected with the driven gear of the gear train of the first gear and the driven gear is meshed with each other, and the two gears are connected with each other with a different gear.

[0015] Furthermore, a first linkage block is connected to a side of the driven gear facing the worm, and the first linkage block is connected to two linkage sleeves that are arranged in parallel at intervals and are both parallel to the central axis of the driven gear. A second linkage block is connected to a side of the worm facing the driven gear, and the second linkage block is connected to two linkage rods that are arranged in parallel at intervals and are both parallel to the worm. The two linkage rods are respectively slidably engaged with the two linkage sleeves.

[0016] Furthermore, the second support frame is connected to the second mounting frame, and the second mounting frame is provided with a second electric screw parallel to the first axis, the second electric screw is threadedly matched with a fourth matching block, the fourth matching block is connected to the third mounting frame, and the third mounting frame includes a first bracket, a second bracket, and a third bracket. The first bracket is connected to the fourth matching block, the second bracket is connected to the first bracket, the wheel surface of the worm gear facing away from the first axis is rotated to connect to the second bracket, the third bracket is connected to the first bracket, and a third connecting rod is connected between the third bracket and the fixed block.

[0017] Furthermore, the fixed block is connected to the first support bar, and two fourth mounting brackets are connected at both ends of the first support bar. The two fourth mounting brackets are respectively provided with a third electric screw and a fourth slide rod parallel to the second screw rod. The third electric screw rod is threadedly matched with a matching bar, and the matching bar is slidably sleeved on the fourth slide rod. The matching bar rotates toward one side of the outer clamping column and is connected to two support columns parallel to the first axis. The two support columns are both rotatably arranged around their own central axes. The two support columns are arranged in parallel and spaced apart in a direction perpendicular to the second screw rod and are spaced apart by a second predetermined distance. The distance between the two support columns and the first axis is equal.

[0018] The beneficial effects of the present invention are:

[0019] 1. The inner and outer clamping columns are used to stably clamp the ends of the pipe fittings, and can adapt to the shearing of shorter pipe fittings without deforming the pipe fittings during clamping.

[0020] 2. The driving plate, inner clamping column and outer clamping column are used to drive the pipe to rotate. There is no need to manually rotate the cutting disc around the central axis of the pipe, which simplifies the operation process and improves the efficiency of pipe cutting.

[0021] 3. Through the linkage between the rotating column and the second screw, the distance between the cutting disc and the central axis of the metal pipe is automatically adjusted while the pipe is rotating to maintain the pressure of the cutting disc on the metal pipe, further improving the pipe cutting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of the pipe cutting device according to an embodiment of the present application.

[0023] Figure 2 It is a three-dimensional schematic diagram of the driving plate and the inner clamping column of an embodiment of the present application.

[0024] Figure 3 It is a three-dimensional schematic diagram of the driving plate and its driving structure according to an embodiment of the present application.

[0025] Figure 4 It is a three-dimensional schematic diagram of the outer clamping column and its driving structure in an embodiment of the present application.

[0026] Figure 5 It is a three-dimensional schematic diagram of the rotating head and its driving structure according to an embodiment of the present application.

[0027] Figure 6 It is a three-dimensional schematic diagram of the linkage structure of the rotating column and the worm gear in an embodiment of the present application.

[0028] Figure 7 It is a three-dimensional schematic diagram of the cutting disc and its driving structure according to an embodiment of the present application.

[0029] Markings in the figure: 1-driving plate, 11-rotating head, 12-first mounting frame, 13-first connecting rod, 14-first electric screw, 15-second slide, 16-first matching block, 17-second slider, 18-connecting plate, 19-support plate, 110-second rotating motor, 111-bearing seat, 112-rotating column, 2-inner clamping column, 21-matching port, 22-first mounting bar, 23-driving rod, 24-first slider, 25-first slide, 26-first mounting plate, 27-spring, 3-outer clamping column, 31-mounting block, 32-second connecting rod, 33-second mounting plate, 34-first screw, 35-coupling, 36-first rotating motor, 37-second matching block, 38-third slider, 39-third slide, 310-first supporting frame, 4-cutting disc, 41-second supporting frame, 42-second mounting bar, 43-driving gear, 44-driven sprocket, 45-driving sprocket, 46-chain, 47-driven gear, 48-worm, 49-worm gear, 410-second screw, 411-third matching block, 412-guide rod, 413-fixed block, 414-mounting rod, 415-first linkage block, 416-linkage sleeve, 417-second linkage block, 418-linkage rod, 419-second mounting frame, 420-second electric screw, 421-fourth matching block, 422-third mounting frame, 423-third connecting rod, 424-first supporting bar, 425-fourth mounting frame, 426-third electric screw, 427-fourth sliding rod, 428-matching bar, 429-support column, 5-pipe fittings. DETAILED DESCRIPTION

[0030] To make the objectives, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the embodiments described in the present invention are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1 As shown, this embodiment provides a pipe cutting device, including a driving plate 1, an inner clamping column 2, an outer clamping column 3, and a cutting disc 4.

[0032] Specifically, such as Figure 2 As shown, both sides of the driving plate 1 are symmetrical oblique sides. The central axis of the driving plate 1 parallel to its own plate surface is set as the first axis. The driving plate 1 is rotated around the first axis and moved along the first axis.

[0033] Specifically, such as Figure 2As shown, there are two inner clamping columns 2, one side of which is provided with a matching opening 21, and the matching openings 21 of the two inner clamping columns 2 are respectively slidably matched with the two side edges of the driving plate 1, and the other side surfaces of the two inner clamping columns 2 are cylindrical surfaces, and the central axes of the cylindrical surfaces are parallel to the first axis. More specifically, the central axes of the other side surfaces of the two inner clamping columns 2 are coplanar with the first axis; the inner clamping columns 2 are connected to a first mounting bar 22, and the first mounting bar 22 is connected to a driving rod 23, and the driving rod 23 is connected to a first slider 24. A first slide bar 25 is provided on the large end of the driving plate 1. More specifically, since the two side edges of the driving plate 23 are beveled, the large end here refers to the wider end of the two ends of the driving plate 23; the first slide bar 25 is at The axial position of the first axis is fixed, the first slide bar 25 rotates with the driving plate 1 and is parallel to the width direction of the driving plate 1, and the first slider 24 is slidably sleeved on the first slide bar 25, and the two ends of the first slide bar 25 are respectively connected to the first mounting plate 26, and the circumferential side of the first slide bar 25 is coaxially sleeved with a spring 27, and the two ends of the spring 27 are respectively connected to the first slide bar 24 and the first mounting plate 26, and the spring 27 is always in a compressed state. The spring 27 is used to make the two inner clamping columns 2 always contact with the two side edges of the driving plate 1 through the driving rod 23 and the first slider 24, and slide with the two side edges of the driving plate 1 through the matching opening 21; with this design, the spacing between the two inner clamping columns 2 can be adjusted by moving the driving plate 1 along the first axis.

[0034] Specifically, such as Figure 1 As shown, there are two outer clamping columns 3, which are respectively arranged outside the two side edges of the driving plate 1 and rotate with the driving plate 1. The two outer clamping columns 3 are both cylindrical. The two outer clamping columns 3 are respectively arranged parallel to the two inner clamping columns 2 along the width direction and the spacing is adjustable. More specifically, the central axis of the two outer clamping columns 3, the central axis of the other side of the two inner clamping columns 2, and the first axis are coplanar.

[0035] Specifically, such as Figure 1 As shown, the central axis of the cutting disc 4 is set as the second axis, the second axis is parallel to the first axis and the spacing is adjustable, and the cutting disc 4 is rotated around the second axis and moved along the first axis.

[0036] When working, Figure 1One end of the pipe fitting 5 shown is placed at the inner clamping column 2 and the outer clamping column 3, so that the pipe wall of the pipe fitting 5 is located between the adjacent inner clamping column 2 and the outer clamping column 3, and the pipe fitting 5 is coaxial with the first axis; move the driving plate 1 to increase the distance between the two inner clamping columns 2, and at the same time adjust the distance between the outer clamping column 3 and the inner clamping column 2, so that the cylindrical surface of the inner clamping column 2 contacts the inner wall of the pipe fitting 5 and squeezes outward, and the outer clamping column 3 contacts the outer wall of the pipe fitting 5 and squeezes inward. With this design, the pipe fitting 5 can be clamped more stably, and since the driving plate 1 is supported between the inner clamping columns 2 inside the pipe fitting 5, the pipe fitting 5 will not be deformed during the clamping process; move the cutting disk 4 to the shear point of the pipe fitting 5, and adjust the second axis to the The spacing of the first axis makes the cutting disk 4 contact the shearing point of the pipe 5 and apply pressure to the shearing point; the driving plate 1 is rotated around the first axis, and the inner clamping column 2 and the outer clamping column 3 follow the driving plate 1 to rotate, and then the pipe 5 is driven to rotate around the first axis, that is, the pipe 5 rotates around its own central axis. At this time, the cutting disk 4 also continuously rotates around the second axis under the rotation of the pipe 5, that is, it rotates around its own central axis, and then shears the shearing point; while rotating, the spacing between the second axis and the first axis is continuously reduced, so that the cutting disk 4 cuts deeper and deeper until the shearing is completed; with this design, clamping is performed at the end of the pipe 5, which can adapt to the shearing of shorter pipes 5 and makes the installation of the pipe 5 more convenient.

[0037] Preferably, Figure 3 As shown, a rotating head 11 is provided on the outside of the large end of the driving plate 1 coaxially with the first axis, and the rotating head 11 is fixed in the axial direction of the first axis. First mounting brackets 12 are respectively provided on the outside of both sides of the driving plate 1, and a first connecting rod 13 is connected between the first mounting bracket 12 and the rotating head 11. A first electric screw 14 and a second slide rod 15 parallel to the first axis are respectively provided in the two first mounting brackets 12. The first electric screw 14 is threadedly fitted with a first matching block 16, and the second slide rod 15 is slidably fitted with a second slider 17. A connecting plate 18 is connected between the first matching block 16 and the second slider 17. The connecting plate 18 is connected to the large end of the driving plate 1, and two first mounting plates 26 are respectively provided on the two first mounting brackets 12. The rotating head 11 is arranged to rotate around the first axis, that is, it rotates around its own central axis, for driving the driving plate 1 to rotate around the first axis; the first electric screw 14 is used to drive the driving plate 1 to move along the first axis.

[0038] Preferably, Figure 4As shown, the two first mounting frames 12 are each connected to a mounting block 31, the mounting blocks 31 are each connected to a second connecting rod 32, the second connecting rod 32 is each connected to a second mounting plate 33, and the opposite sides of the two second mounting plates 33 are rotatably connected to two first screw rods 34 with opposite threads, the two first screw rods 34 are both parallel to the width direction, and the opposite ends of the two first screw rods 34 are connected by a coupling 35. A first rotating motor 36 is provided on one of the second mounting plates 33, and the drive shaft of the first rotating motor 36 is coaxially connected to the corresponding first screw rod 34. The two first screw rods 34 are both threadedly matched with a second matching block 37 The second mating blocks 37 are each connected to a third slider 38, and a third slide bar 39 is connected between the two second mounting plates 33 along the width direction. The third slide bars 38 are slidably sleeved on the third slide bar 39, and the two second mating blocks 37 are each connected to a first support frame 310. The two outer clamping columns 3 are respectively connected to the two first support frames 310. With such a design, the outer clamping columns 3 can rotate following the driving plate 1; the first rotating motor 36 is used to drive the two first screws 34 with opposite threads to rotate, thereby driving the two outer clamping columns 3 to move in opposite directions, so as to simultaneously adjust the distance between the two outer clamping columns 3 and the corresponding inner clamping columns 2.

[0039] Preferably, Figure 5 As shown, the device also includes a support plate 19, which is fixed to the mounting surface of the device. The support plate 19 is provided with a second rotating motor 110 and a bearing seat 111 coaxial with the first axis. The driving end of the second rotating motor 110 is coaxially connected to a rotating column 112, which is coaxially penetrated by the bearing seat 111. The rotating column 112 is coaxially connected to the rotating head 11, and the second rotating motor 110 is used to drive the rotating head 11 to rotate.

[0040] Preferably, Figure 6 and Figure 7As shown, the device also includes a second support frame 41, which is fixed to the placement surface of the device. A second mounting bar 42 is provided on the second support frame 41. A driving gear 43 arranged along the first axis is rotatably connected to the second mounting bar 42. The driving gear 43 is coaxially connected to a driven sprocket 44. A driving sprocket 45 is coaxially installed on the rotating column 112. The driving sprocket 45 and the driven sprocket 44 are matched with the same chain 46. A driven gear 47 is rotatably connected to the second mounting bar 42. The driven gear 47 is meshed with the driving gear 43. A worm 48 is coaxially provided on the outside of the driven gear 47 and the spacing is adjustable. The worm 48 rotates with the driven gear 47. The worm 48 is matched with a worm wheel 49. The wheel surface of the worm wheel 49 facing the first axis is coaxially connected to a second screw 410. The second screw 410 is threadedly matched with a third matching block 411. The back of the third matching block 411 A guide rod 412 parallel to the second screw 410 is connected to one side of the worm gear 49, and the lower end of the second screw 410 is rotatably connected to a fixed block 413, and the fixed block 413 does not rotate with the second screw 410. The guide rod 412 slides through the fixed block 413, and the lower end of the guide rod 412 is connected to a mounting rod 414 parallel to the first axis, and the cutting disk 4 is coaxially mounted on the mounting rod 414; the second support frame 41 is also used to drive the driving sprocket 45 to rotate, and drives the second screw 410 to rotate through the linkage relationship of the driving sprocket 45, chain 46, driven sprocket 44, driving gear 43, driven gear 47, worm 48, and worm wheel 49, thereby driving the third matching block 411 to move, and then driving the guide rod 412 to slide on the fixed block 413 to adjust the distance between the second axis and the first axis, that is, to adjust the distance between the cutting disk 4 and the first axis.

[0041] With this design, there is no need to separately adjust the distance between the cutting disk 4 and the first axis. By simply setting a reasonable transmission ratio between the worm 48 and the turbine 49, it is possible to simultaneously drive the pipe 5 to rotate and continuously adjust the distance between the cutting disk 4 and the first axis only by the second rotating motor 110, thereby simplifying the shearing operation and improving the shearing efficiency.

[0042] Preferably, Figure 6 As shown, a first linkage block 415 is connected to a side of the driven gear 47 facing the worm 48, and the first linkage block 415 is connected to two linkage sleeves 416 that are arranged in parallel at intervals and are parallel to the central axis of the driven gear 47. A second linkage block 417 is connected to a side of the worm 48 facing the driven gear 47, and the second linkage block 417 is connected to two linkage rods 418 that are arranged in parallel at intervals and are parallel to the worm 48. The two linkage rods 418 are respectively slidably fitted with the two linkage sleeves 416; with such a design, when the distance between the driven gear 47 and the worm 48 is adjustable, the driven gear 47 can drive the worm 48 to rotate synchronously.

[0043] Preferably, Figure 6and Figure 7 As shown, the second support frame 41 is connected to the second mounting frame 419, and the second mounting frame 419 is provided with a second electric screw 420 parallel to the first axis. The second electric screw 420 is threadedly matched with a fourth matching block 421, and the fourth matching block 421 is connected to the third mounting frame 422. The third mounting frame 422 includes a first bracket, a second bracket, and a third bracket. The first bracket is connected to the fourth matching block 421, and the second bracket is connected to the first bracket. The wheel surface of the worm gear 49 facing away from the first axis rotates to connect to the second bracket, and the third bracket is connected to the first bracket. A third connecting rod 423 is connected between the third bracket and the fixed block 413. The second electric screw 420 is used to adjust the distance between the driven gear 47 and the worm 48, thereby moving the cutting disk 4 along the first axis; the second bracket is used to fix the worm gear 49; the third bracket is used to fix the fixed block 413, so that the fixed block 413 does not rotate with the second screw 410.

[0044] Preferably, Figure 7 As shown, the fixed block 413 is connected to a first support bar 424, and two fourth mounting brackets 425 are connected at both ends of the first support bar 424. A third electric screw 426 and a fourth slide bar 427 are respectively provided in the two fourth mounting brackets 425, which are parallel to the second screw 410. The third electric screw 426 is threadedly matched with a matching bar 428, and the matching bar 428 is slidably sleeved on the fourth slide bar 427. The matching bar 428 rotates toward one side of the outer clamping column 3 and is connected to two support columns 429 parallel to the first axis. The two support columns 429 are both rotatably arranged around their own central axes. The two support columns 429 are arranged in parallel and spaced apart in a direction perpendicular to the second screw 410 and are spaced apart by a second predetermined distance. The distance between the two support columns 429 and the first axis is equal. With this design, two support columns 429 are introduced to support the cutting point, thereby improving the stability of cutting.

[0045] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application.

Claims

1. A pipe cutting device, characterized in that: include: The driving plate (1) has two symmetrical oblique sides, and a central axis of the driving plate (1) parallel to its own plate surface is set as a first axis. The driving plate (1) is rotated around the first axis and moved along the first axis. The two inner clamping columns (2) are each provided with a matching opening (21) on one side thereof, and the matching openings (21) of the two inner clamping columns (2) are respectively slidably matched with the two side edges of the driving plate (1), and the other side surfaces of the two inner clamping columns (2) are cylindrical surfaces, and the central axes of the cylindrical surfaces are parallel to the first axis. The inner clamping columns (2) are each connected to a first mounting bar (22), and the first mounting bar (22) is each connected to a driving rod (23), and the driving rod (23) is each connected to a first slider (24). The large end of the driving plate (1) is provided with a first slider ( 25), the first slide bar (25) is fixed in the axial direction of the first axis, the first slide bar (25) rotates with the driving plate (1) and is parallel to the width direction of the driving plate (1), the first slider (24) is slidably sleeved on the first slide bar (25), the first two ends of the first slide bar (25) are respectively connected to the first mounting plate (26), a spring (27) is coaxially sleeved on the circumference of the first slide bar (25), the two ends of the spring (27) are respectively connected to the first slider (24) and the first mounting plate (26), and the spring (27) is always in a compressed state; Two outer clamping columns (3) are respectively arranged outside the two sides of the driving plate (1) and rotate with the driving plate (1), the two outer clamping columns (3) are both cylindrical, and the two outer clamping columns (3) are respectively arranged in parallel with the two inner clamping columns (2) along the width direction and the spacing is adjustable; The cutting disc (4) has a central axis as a second axis, the second axis is parallel to the first axis and the spacing is adjustable, and the cutting disc (4) is arranged to rotate around the second axis and move along the first axis; A rotating head (11) is provided on the outer side of the large end of the driving plate (1) coaxially with the first axis, and the rotating head (11) is fixed in the axial direction of the first axis. First mounting frames (12) are respectively provided on the outer sides of both sides of the driving plate (1), and a first connecting rod (13) is connected between the first mounting frame (12) and the rotating head (11). A first electric screw (14) and a second slide rod (15) parallel to the first axis are respectively provided in the two first mounting frames (12). The first electric screw (14) is threadedly matched with a first matching block (16), and the second slide rod (15) is slidably matched with a second slider (17). A connecting plate (18) is connected between the first matching block (16) and the second slider (17), and the connecting plate (18) is connected to the large end of the driving plate (1). Two first mounting plates (26) are respectively provided on the two first mounting frames (12), and the rotating head (11) is rotatably arranged around the first axis. The two first mounting frames (12) are both connected to a mounting block (31), the mounting blocks (31) are both connected to a second connecting rod (32), the second connecting rod (32) is both connected to a second mounting plate (33), and the two second mounting plates (33) are both rotatably connected to opposite sides of two first screw rods (34) with opposite threads, the two first screw rods (34) are both parallel to the width direction, and the opposite ends of the two first screw rods (34) are connected by a coupling (35), and one of the second mounting plates (33) is provided with a first rotating motor (36), and the second first screw rod (34) is connected to the first mounting plate (33). A driving shaft of a rotating motor (36) is coaxially connected to a corresponding first screw rod (34), the two first screw rods (34) are threadedly matched with a second matching block (37), the second matching blocks (37) are connected to a third slider (38), a third slide rod (39) is connected between the two second mounting plates (33) along the width direction, the third slider (38) is slidably mounted on the third slide rod (39), the two second matching blocks (37) are connected to a first support frame (310), and the two outer clamping columns (3) are respectively connected to the two first support frames (310).

2. The pipe cutting device according to claim 1, characterized in that The device further comprises a support plate (19), the support plate (19) being fixed to the mounting surface of the device, the support plate (19) being provided with a second rotating motor (110) and a bearing seat (111) coaxially with the first axis, the driving end of the second rotating motor (110) being coaxially connected to a rotating column (112), the rotating column (112) being coaxially passed through the bearing seat (111), and the rotating column (112) being coaxially connected to the rotating head (11).

3. The pipe cutting device according to claim 2, characterized in that: The device further comprises a second support frame (41), the second support frame (41) being fixed to the placement surface of the device, a second mounting bar (42) being provided on the second support frame (41), a driving gear (43) being rotatably connected to the second mounting bar (42) and arranged along the first axis, the driving gear (43) being coaxially connected to a driven sprocket (44), a driving sprocket (45) being coaxially mounted on the rotating column (112), the driving sprocket (45) and the driven sprocket (44) being matched with the same chain (46), a driven gear (47) being rotatably connected to the second mounting bar (42), the driven gear (47) being meshed with the driving gear (43), a worm (48) being coaxially provided on the outside of the driven gear (47) and having an adjustable spacing, the worm (48) following the driven gear ( 47) rotates, the worm (48) is matched with a worm wheel (49), the wheel surface of the worm wheel (49) facing the first axis is coaxially connected to the second screw (410), the second screw (410) is threadedly matched with a third matching block (411), the side of the third matching block (411) facing away from the worm wheel (49) is connected to a guide rod (412) parallel to the second screw (410), the lower end of the second screw (410) is rotatably connected to a fixed block (413), the fixed block (413) does not rotate with the second screw (410), the guide rod (412) is slidably penetrated through the fixed block (413), the lower end of the guide rod (412) is connected to a mounting rod (414) parallel to the first axis, and the cutting disc (4) is coaxially rotatably mounted on the mounting rod (414).

4. The pipe cutting device according to claim 3, characterized in that: A first linkage block (415) is connected to a side of the driven gear (47) facing the worm (48), and the first linkage block (415) is connected to two linkage sleeves (416) that are arranged in parallel at intervals and are both parallel to the central axis of the driven gear (47). A second linkage block (417) is connected to a side of the worm (48) facing the driven gear (47), and the second linkage block (417) is connected to two linkage rods (418) that are arranged in parallel at intervals and are both parallel to the worm (48). The two linkage rods (418) are respectively slidably engaged with the two linkage sleeves (416).

5. The pipe cutting device according to claim 3, characterized in that: The second support frame (41) is connected to the second mounting frame (419), and the second mounting frame (419) is provided with a second electric screw (420) parallel to the first axis. The second electric screw (420) is threadedly matched with a fourth matching block (421), and the fourth matching block (421) is connected to the third mounting frame (422). The third mounting frame (422) includes a first bracket, a second bracket, and a third bracket. The first bracket is connected to the fourth matching block (421), and the second bracket is connected to the first bracket. The wheel surface of the worm gear (49) facing away from the first axis is rotated to connect to the second bracket. The third bracket is connected to the first bracket. A third connecting rod (423) is connected between the third bracket and the fixed block (413).

6. The pipe cutting device according to claim 3, characterized in that The fixing block (413) is connected to a first support bar (424), and two fourth mounting frames (425) are connected to both ends of the first support bar (424). A third electric screw rod (426) and a fourth slide rod (427) are respectively provided in the two fourth mounting frames (425), and the third electric screw rod (426) is threadedly matched with a matching bar (428). The matching bar (428) is slidably sleeved on the fourth slide rod (427). The matching bar (428) is rotated toward one side of the outer clamping column (3) and is connected to two support columns (429) parallel to the first axis. The two support columns (429) are both rotated around their own central axes. The two support columns (429) are arranged in parallel and spaced apart in a direction perpendicular to the second screw rod (410) and are spaced apart by a second predetermined distance. The two support columns (429) are equidistant from the first axis.

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