Cutting equipment for spheroidal graphite pipe fitting production

Abstract

The utility model discloses a cutting device for spheroidal graphite pipe fitting production, which comprises a rack, a pressing fixing mechanism and a one-way conveying mechanism, and the top of the rack is sequentially provided with a fixing frame, a mounting part and a placing part from left to right along the X-axis direction; the pressing fixing mechanism comprises a pressing seat and a hydraulic telescopic rod, the pressing seat is slidably connected to the inner wall of the fixing frame, the hydraulic telescopic rod is fixedly connected to the top of the fixing frame, and one end of the pressing seat penetrates out of the top of the fixing frame and is connected with one end of the hydraulic telescopic rod; the one-way conveying mechanism is arranged on the surface of the mounting part and connected with the surface of the end, penetrating out of the top of the fixing frame, of the pressing base. Therefore, the one-way conveying mechanism arranged on the device can synchronously drive the pipe body to be conveyed by a set distance in a one-way mode in the lifting process of the downward-pressing fixing mechanism, automatic feeding operation is achieved, manual material pushing is not needed on the whole, the labor intensity is effectively reduced, the working efficiency is improved, and the using effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of ductile iron pipe cutting, in particular to a cutting device for producing ductile iron pipes. Background Art

[0002] In the production process of ductile iron pipes, cutting is a key link, which determines the length and dimensional accuracy of the pipes. However, after cutting the pipe body, traditional cutting equipment usually requires manual movement of the pipe body to a set distance to prepare for the next cutting.

[0003] This manual pushing method has several significant defects: first, it is labor-intensive. Since ductile iron pipes are often heavy and long, manual pushing requires a lot of physical strength and energy, which increases the labor intensity of workers. Second, the work efficiency is low. The speed and accuracy of manual pushing are affected by the worker's skill level and fatigue level, which easily leads to low cutting efficiency. Utility Model Content

[0004] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, the purpose of the utility model is to propose a cutting device for the production of ductile iron pipe fittings. The one-way conveying mechanism arranged in the device can synchronously drive the pipe body to be conveyed one-way for a set distance during the lifting process of the downward pressing fixing mechanism, thereby realizing automatic loading operation. There is no need for manual pushing of materials as a whole, which effectively reduces labor intensity and improves work efficiency, and has a good use effect.

[0006] To achieve the above-mentioned purpose, the utility model proposes a cutting device for the production of ductile iron pipe fittings, comprising a frame, a downward pressing fixing mechanism and a one-way conveying mechanism, wherein a fixing frame, a mounting portion and a placing portion are sequentially arranged on the top of the frame along the X-axis direction from left to right; the downward pressing fixing mechanism comprises a pressure seat and a hydraulic telescopic rod, wherein the pressure seat is slidably connected to the inner wall of the fixing frame, the hydraulic telescopic rod is fixedly connected to the top of the fixing frame, one end of the pressure seat passes through the top of the fixing frame and is connected to one end of the hydraulic telescopic rod; the one-way conveying mechanism is arranged on the surface of the mounting portion and is connected to the surface of one end of the pressure seat passing through the top of the fixing frame.

[0007] The utility model discloses a cutting device for producing ductile iron pipe fittings. The one-way conveying mechanism arranged in the device can synchronously drive the pipe body to be conveyed one-way for a set distance during the lifting process of the pressing fixing mechanism, thereby realizing automatic feeding operation. The whole device does not need manual pushing, effectively reduces labor intensity and improves work efficiency, and has a good use effect.

[0008] In addition, the cutting device for producing ductile iron pipes proposed in the application may also have the following additional technical features:

[0009] Specifically, the one-way conveying mechanism includes a mounting frame, a limiting hole, a driving wheel and a one-way driving mechanism, wherein the mounting frame is fixedly connected to the surface of the mounting portion, the limiting hole is opened on the surface of the mounting frame, the driving wheel is symmetrically rotatably connected to the inner wall of the mounting frame and is located outside the limiting hole, the one-way driving mechanism is arranged on the top of the mounting frame, one end of the one-way driving mechanism is respectively connected to one end of the central axis of the two groups of driving wheels, and the other end of the one-way driving mechanism is connected to the end surface of the pressure seat that passes through the top of the fixing frame; the one-way driving mechanism includes a bracket, a rotating drum, a one-way transmission, a lifting column rod, a connecting plate, a convex shaft and a spiral guide groove, wherein the bracket is fixedly connected to the top of the mounting frame, and the rotating drum and the one-way transmission are respectively symmetrically rotatably connected The cam is connected to the inner wall of the bracket and is arranged up and down. One end of the one-way transmission is connected to one end of the central axis of the driving wheel, and the other end of the one-way transmission is connected to one end of the central axis of the rotating drum. The lifting column rod is arranged inside the rotating drum, and one end of the lifting column rod passes through the top of the rotating drum and is fixedly connected to the connecting plate. The connecting plate is fixedly connected to the surface of one end of the pressure seat passing through the top of the fixing frame. The other end of the lifting column rod is located inside the rotating drum and is symmetrically provided with the convex shaft. The spiral guide groove is opened at the position of the inner wall of the rotating drum corresponding to the position of the convex shaft, and one end of the convex shaft is located inside the spiral guide groove and is slidably connected to the inner wall of the spiral guide groove; the spiral guide grooves of the two groups of the inner walls of the rotating drum are opened in opposite directions; the transmission directions of the two groups of the one-way transmissions are opposite.

[0010] Specifically, it also includes an adjustment mechanism arranged on the surface of the lifting column rod, and the adjustment mechanism includes a connecting sleeve, a connecting column rod, a connecting hole and a connecting bolt, wherein the connecting sleeve is threadedly connected to the top of the lifting column rod, the connecting column rod is fixedly connected to the bottom of the connecting plate and corresponds to the position of the connecting sleeve, one end of the connecting column rod is located inside the connecting sleeve and is slidably connected to the inner wall of the connecting sleeve, and the connecting holes are respectively opened at the positions corresponding to the surface positions of the connecting column rod and are connected by the connecting bolts.

[0011] Specifically, it also includes a positioning mechanism arranged at the bottom of the frame, the positioning mechanism includes an air intake base and a pneumatic protrusion, wherein the inner wall of the fixed frame and the surface of the placement portion are respectively provided with a lower half ring placement groove corresponding to the position of the limiting hole, and the bottom of the pressure seat is provided with an upper half ring placement groove corresponding to the position of the lower half ring placement groove, the limiting hole, the lower half ring placement groove and the upper half ring placement groove are respectively adapted to the outer dimensions of the tube body, and the tube body is respectively slidably connected to the inner wall of the limiting hole and the inner wall of the lower half ring placement groove; the air intake base is fixedly connected to the bottom of the frame and corresponds to the position of the lower half ring placement groove, and the pneumatic protrusion is arranged on the top of one end of the air intake base and is located on the outer side of the lower half ring placement groove opened on the inner wall of the fixed frame.

[0012] Specifically, it also includes a cutting mechanism arranged on the surface of the fixed frame, and the cutting mechanism includes a U-shaped frame, an electric screw translation mechanism, a mounting seat, a cutting wheel and a driving motor, wherein the U-shaped frame is fixedly connected to the surface of the fixed frame, the electric screw translation mechanism is arranged inside the U-shaped frame, the mounting seat is slidably connected to the surface of the U-shaped frame and is connected to one end of the electric screw translation mechanism, the cutting wheel is rotatably connected to the surface of the mounting seat and corresponds to the position of the tube body, the driving motor is fixedly connected to the top of the mounting seat, and is connected to one end of the central axis of the cutting wheel through a gear assembly arranged inside the mounting seat.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0015] Figure 1 This is a schematic diagram of the structure of a cutting device for producing ductile iron pipes according to the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of a downward pressing and fixing mechanism in a cutting device for producing ductile iron pipes of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a one-way conveying mechanism in a cutting device for producing ductile iron pipes according to the utility model;

[0018] Figure 4 This is a schematic diagram of the structure of a one-way transmission device in a cutting device for producing ductile iron pipes according to the utility model;

[0019] Figure 5This is a schematic diagram of the structure of an adjustment mechanism in a cutting device for producing ductile iron pipes according to the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of a positioning mechanism in a cutting device for producing ductile iron pipes according to the utility model;

[0021] Figure 7 The utility model is a schematic diagram of the structure of a cutting mechanism in a cutting device for producing ductile iron pipes.

[0022] As shown in the figure:

[0023] 1. Frame; 2. Pressing and fixing mechanism; 3. One-way conveying mechanism;

[0024] 11. fixing frame; 12. mounting portion; 13. placing portion;

[0025] 21. Press seat; 22. Hydraulic telescopic rod;

[0026] 31. Mounting frame; 32. Positioning hole; 33. Driving wheel; 34. One-way driving mechanism; 341. Bracket; 342. Rotating drum; 343. One-way transmission device; 344. Lifting column rod; 345. Connecting plate; 346. Protruding shaft; 347. Spiral guide groove;

[0027] 6. Adjustment mechanism; 61. Connecting sleeve; 62. Connecting column; 63. Connecting hole; 64. Connecting bolt;

[0028] 4. Positioning mechanism; 41. Air intake base; 42. Pneumatic convex rod;

[0029] 5. Cutting mechanism; 51. U-shaped frame; 52. Electric screw translation mechanism; 53. Mounting seat; 54. Cutting wheel; 55. Driving motor;

[0030] 10. Tube body; 14. Lower half ring placement groove; 211. Upper half ring placement groove. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limitations on the present invention. On the contrary, the embodiments of the present invention include all changes, modifications, and equivalents that fall within the spirit and connotation of the appended claims.

[0032] A cutting device for producing ductile iron pipes according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0033] like Figure 1-Figure 7As shown, a cutting device for producing ductile iron pipe fittings according to an embodiment of the utility model comprises a frame 1, a downward pressing fixing mechanism 2 and a one-way conveying mechanism 3, wherein a fixing frame 11, a mounting portion 12 and a placing portion 13 are sequentially arranged on the top of the frame 1 along the X-axis direction from left to right; the downward pressing fixing mechanism 2 comprises a pressing seat 21 and a hydraulic telescopic rod 22, wherein the pressing seat 21 is slidably connected to the inner wall of the fixing frame 11, the hydraulic telescopic rod 22 is fixedly connected to the top of the fixing frame 11, one end of the pressing seat 21 passes through the top of the fixing frame 11 and is connected to one end of the hydraulic telescopic rod 22; the one-way conveying mechanism 3 is arranged on the surface of the mounting portion 12, and is connected to the surface of one end of the pressing seat 21 passing through the top of the fixing frame 11.

[0034] Specifically, when the hydraulic telescopic rod 22 drives the pressure seat 21 to descend, the one-way conveying mechanism 3 does not operate. When the hydraulic telescopic rod 22 drives the pressure seat 21 to rise, the pressure seat 21 triggers the one-way conveying mechanism 3 to passively operate. The operation of the one-way conveying mechanism 3 drives the tube body 10 to convey the set distance in one direction, thereby realizing automatic loading operation. There is no need for manual pushing of materials as a whole, which effectively reduces labor intensity and improves work efficiency, and has a good use effect.

[0035] In one embodiment of the present invention, Figure 1 and Figure 3-Figure 5As shown, the one-way conveying mechanism 3 includes a mounting frame 31, a limiting hole 32, a driving wheel 33 and a one-way driving mechanism 34, wherein the mounting frame 31 is fixedly connected to the surface of the mounting portion 12, the limiting hole 32 is opened on the surface of the mounting frame 31, the driving wheel 33 is symmetrically rotatably connected to the inner wall of the mounting frame 31, and is located outside the limiting hole 32, the one-way driving mechanism 34 is arranged on the top of the mounting frame 31, one end of the one-way driving mechanism 34 is respectively connected to one end of the central axis of the two groups of driving wheels 33, and the other end of the one-way driving mechanism 34 is connected to the surface of one end of the pressure seat 21 passing through the top of the fixing frame 11; the one-way driving mechanism 34 includes a bracket 341, a rotating drum 342, a one-way transmission 343, a lifting column rod 344, a connecting plate 345, a convex shaft 346 and a spiral guide groove 347, wherein the bracket 341 is fixedly connected to the top of the mounting frame 31, the rotating drum 342 and the one-way transmission 343 are symmetrically The one-way transmission 343 is rotatably connected to the inner wall of the bracket 341 and is arranged up and down. One end of the one-way transmission 343 is connected to one end of the central axis of the driving wheel 33, and the other end of the one-way transmission 343 is connected to one end of the central axis of the rotating drum 342. The lifting column rod 344 is arranged inside the rotating drum 342. One end of the lifting column rod 344 passes through the top of the rotating drum 342 and is fixedly connected with a connecting plate 345. The connecting plate 345 is fixedly connected to the surface of one end of the pressure seat 21 passing through the top of the fixing frame 11. The other end of the lifting column rod 344 is located inside the rotating drum 342 and is symmetrically provided with a convex shaft 346. A spiral guide groove 347 is opened at the inner wall of the rotating drum 342 corresponding to the position of the convex shaft 346. One end of the convex shaft 346 is located inside the spiral guide groove 347 and is slidably connected to the inner wall of the spiral guide groove 347. The two groups of spiral guide grooves 347 on the inner wall of the rotating drum 342 are opened in opposite directions. The two groups of one-way transmissions 343 have opposite transmission directions.

[0036] It should be noted that the one-way transmission device 343 described in this embodiment is a prior art, so it will not be described in detail here.

[0037] It should also be noted that only when the connecting plate 345 is in the ascending state, the two sets of driving wheels 33 will synchronously rotate inward to drive the tube body 10 to move a set distance toward the cutting wheel 54 to achieve one-way automatic feeding.

[0038] When the hydraulic telescopic rod 22 is in the lower position, the pressure seat 21 and the connecting plate 345 are moved downward, and the pressure seat 21 is fixed to the lower position. When the connecting plate 345 is moved downward, the lifting column rod 344 and the convex shaft 346 are moved downward, and the convex shaft 346 is moved downward, and the rotary drum 342 is rotated synchronously by cooperating with the spiral guide groove 347. When the connecting plate 345 is in the lowering state, the rotary drum 342 rotates through the one-way transmission 343 and does not drive the driving wheel 33 to rotate, so that the position of the tubular body 10 is fixed accordingly. When the hydraulic telescopic rod 22 is reset, it synchronously drives the pressure seat 21 and the connecting plate 345 to rise, and the pressure seat 21 is moved upward. The lifting plate 345 is separated from the tube body 10 and the tube body 10 is no longer fixed. The lifting of the connecting plate 345 synchronously drives the lifting column rod 344 and the cam shaft 346 to rise. The rising cam shaft 346 synchronously drives the rotating drum 342 to rotate by cooperating with the spiral guide groove 347. When the connecting plate 345 is in the rising state, the rotating drum 342 rotates and synchronously drives the driving wheel 33 to rotate through the one-way transmission 343. The two sets of driving wheels 33 synchronously rotate inward to drive the tube body 10 to move a set distance toward the cutting wheel 54, thereby realizing one-way automatic feeding with good use effect. Among them, by changing the position of the lifting column rod 344 inside the rotating drum 342, the number of rotations of the driving wheel 33 can be correspondingly changed, thereby achieving the purpose of adjusting the moving distance of the tube body 10.

[0039] In one embodiment of the present invention, Figure 1 , Figure 3 and Figure 5 As shown, it also includes an adjustment mechanism 6 arranged on the surface of the lifting column rod 344, and the adjustment mechanism 6 includes a connecting sleeve 61, a connecting column rod 62, a connecting hole 63 and a connecting bolt 64, wherein the connecting sleeve 61 is threadedly connected to the top of the lifting column rod 344, the connecting column rod 62 is fixedly connected to the bottom of the connecting plate 345 and corresponds to the position of the connecting sleeve 61, one end of the connecting column rod 62 is located inside the connecting sleeve 61 and is slidably connected to the inner wall of the connecting sleeve 61, and connecting holes 63 are respectively opened at the corresponding positions on the surface of the connecting column rod 62 and the surface of the connecting sleeve 61, and are connected by connecting bolts 64.

[0040] It should be noted that, in order to facilitate the adjustment of the moving distance of the tube body 10 , the adjustment mechanism 6 can also be an electric telescopic rod.

[0041] Specifically, loosen the connecting bolt 64, separate the connecting sleeve 61 and the connecting column 62, and adjust the length of the connecting column 62 inside the connecting sleeve 61 to change the number of rotations of the driving wheel 33 accordingly, thereby synchronously changing the moving distance of the tube body 10. The manual adjustment operation is relatively cumbersome. In order to improve work efficiency, the connecting sleeve 61, the connecting column 62, the connecting hole 63 and the connecting bolt 64 can be replaced with an electric telescopic rod. The electric telescopic rod is fast to adjust and easy to control uniformly, and has a good use effect.

[0042] In one embodiment of the present invention, Figure 1 and Figure 6 As shown, it also includes a positioning mechanism 4 arranged at the bottom of the frame 1, and the positioning mechanism 4 includes an air intake base 41 and a pneumatic protrusion 42, wherein the inner wall of the fixed frame 11 and the surface of the placement portion 13 are respectively provided with a lower half ring placement groove 14 corresponding to the position of the limiting hole 32, and the bottom of the pressure seat 21 is provided with an upper half ring placement groove 211 corresponding to the position of the lower half ring placement groove 14. The limiting hole 32, the lower half ring placement groove 14 and the upper half ring placement groove 211 are respectively adapted to the outer dimensions of the tube body 10, and the tube body 10 is respectively slidably connected to the inner wall of the limiting hole 32 and the inner wall of the lower half ring placement groove 14; the air intake base 41 is fixedly connected to the bottom of the frame 1 and corresponds to the position of the lower half ring placement groove 14, and the pneumatic protrusion 42 is arranged on the top of one end of the air intake base 41, and is located on the outer side of the lower half ring placement groove 14 opened on the inner wall of the fixed frame 11.

[0043] It should be noted that the pneumatic protruding rod 42 described in this embodiment is connected to one end of the external air pipe. The pneumatic protruding rod 42 is a prior art and will not be described in detail here.

[0044] Specifically, when the pneumatic protrusion 42 is ventilated, one end thereof protrudes from the top of the air inlet base 41 and is located outside the lower semi-ring placement groove 14 opened on the inner wall of the fixing frame 11. After one end of the tube body 10 abuts against the surface of the pneumatic protrusion 42, unilateral positioning is achieved, and the use effect is good.

[0045] In one embodiment of the present invention, Figure 1 and Figure 7 As shown, it also includes a cutting mechanism 5 arranged on the surface of the fixed frame 11, and the cutting mechanism 5 includes a U-shaped frame 51, an electric screw translation mechanism 52, a mounting seat 53, a cutting wheel 54 and a driving motor 55, wherein the U-shaped frame 51 is fixedly connected to the surface of the fixed frame 11, the electric screw translation mechanism 52 is arranged inside the U-shaped frame 51, the mounting seat 53 is slidably connected to the surface of the U-shaped frame 51, and is connected to one end of the electric screw translation mechanism 52, the cutting wheel 54 is rotatably connected to the surface of the mounting seat 53, and corresponds to the position of the tube body 10, the driving motor 55 is fixedly connected to the top of the mounting seat 53, and is connected to one end of the central axis of the cutting wheel 54 through a gear assembly arranged inside the mounting seat 53.

[0046] It should be noted that the electric screw translation mechanism 52 described in this embodiment is a prior art and will not be described in detail here. The electric screw translation mechanism 52 is used to synchronously drive the mounting seat 53, the cutting wheel 54 and the driving motor 55 to perform lateral reciprocating motion.

[0047] Specifically, the driving motor 55 runs through the gear assembly inside the mounting seat 53 to synchronously drive the cutting wheel 54 to rotate, and the electric screw translation mechanism 52 runs to synchronously drive the mounting seat 53, the cutting wheel 54 and the driving motor 55 to move horizontally, and the cutting wheel 54 cuts the tube body 10 during the horizontal movement.

[0048] To sum up, in the embodiment of the utility model, a cutting device for producing ductile iron pipe fittings is provided. The one-way conveying mechanism 3 arranged in the device can synchronously drive the tube body 10 to convey a set distance in one direction during the lifting process of the pressing and fixing mechanism 2, so as to realize automatic loading operation. There is no need for manual pushing of materials as a whole, which effectively reduces labor intensity and improves work efficiency, and has a good use effect. When the device is in use, it only needs to use the positioning mechanism 4 for positioning once, and there is no need for repeated positioning, which effectively improves work efficiency. The moving distance of the tube body 10 can be adjusted by the adjusting mechanism 6, so that it can cut tube bodies 10 of different lengths. It is highly practical and has a good use effect.

[0049] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0051] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and deform the above embodiments within the scope of the present invention.

Claims

1. A cutting device for producing ductile iron pipes, characterized in that: It comprises a frame (1), a downward pressing and fixing mechanism (2) and a one-way conveying mechanism (3), wherein: The top of the frame (1) is provided with a fixing frame (11), a mounting portion (12) and a placement portion (13) in order from left to right along the X-axis direction; The pressing and fixing mechanism (2) comprises a pressing seat (21) and a hydraulic telescopic rod (22), wherein the pressing seat (21) is slidably connected to the inner wall of the fixing frame (11), the hydraulic telescopic rod (22) is fixedly connected to the top of the fixing frame (11), and one end of the pressing seat (21) passes through the top of the fixing frame (11) and is connected to one end of the hydraulic telescopic rod (22); The one-way conveying mechanism (3) is arranged on the surface of the mounting portion (12) and is connected to the surface of one end of the pressure seat (21) that passes through the top of the fixing frame (11).

2. The cutting equipment for producing ductile iron pipes according to claim 1, characterized in that: The one-way conveying mechanism (3) comprises a mounting frame (31), a limiting hole (32), a driving wheel (33) and a one-way driving mechanism (34), wherein: The mounting frame (31) is fixedly connected to the surface of the mounting portion (12); the limiting hole (32) is opened on the surface of the mounting frame (31); the driving wheel (33) is symmetrically connected to the inner wall of the mounting frame (31) and is located outside the limiting hole (32); the one-way driving mechanism (34) is arranged on the top of the mounting frame (31); one end of the one-way driving mechanism (34) is respectively connected to one end of the central axis of the two groups of driving wheels (33); the other end of the one-way driving mechanism (34) is connected to the surface of one end of the pressure seat (21) passing through the top of the fixing frame (11); The one-way driving mechanism (34) comprises a bracket (341), a rotating drum (342), a one-way transmission (343), a lifting column rod (344), a connecting plate (345), a convex shaft (346) and a spiral guide groove (347), wherein: The bracket (341) is fixedly connected to the top of the mounting frame (31); the rotating drum (342) and the one-way transmission device (343) are respectively symmetrically rotatably connected to the inner wall of the bracket (341) and are arranged up and down; one end of the one-way transmission device (343) is connected to one end of the central axis of the driving wheel (33); the other end of the one-way transmission device (343) is connected to one end of the central axis of the rotating drum (342); the lifting column rod (344) is arranged inside the rotating drum (342); one end of the lifting column rod (344) passes through the top of the rotating drum (342) The connecting plate (345) is fixedly connected to the pressure seat (21) and is fixedly connected to the surface of one end of the pressure seat (21) passing through the top of the fixing frame (11); the other end of the lifting column rod (344) is located inside the rotating cylinder (342) and is symmetrically provided with the convex shaft (346); the spiral guide groove (347) is opened at the inner wall of the rotating cylinder (342) corresponding to the position of the convex shaft (346); one end of the convex shaft (346) is located inside the spiral guide groove (347) and is slidably connected to the inner wall of the spiral guide groove (347); The spiral guide grooves (347) on the inner walls of the two groups of rotating drums (342) are opened in opposite directions; The two groups of one-way transmission devices (343) have opposite transmission directions.

3. The cutting equipment for producing ductile iron pipes according to claim 2, characterized in that: It also includes an adjustment mechanism (6) arranged on the surface of the lifting column rod (344), the adjustment mechanism (6) including a connecting sleeve (61), a connecting column rod (62), a connecting hole (63) and a connecting bolt (64), wherein: The connecting sleeve (61) is threadedly connected to the top of the lifting column rod (344); the connecting column rod (62) is fixedly connected to the bottom of the connecting plate (345) and corresponds to the position of the connecting sleeve (61); one end of the connecting column rod (62) is located inside the connecting sleeve (61) and is slidably connected to the inner wall of the connecting sleeve (61); the connecting holes (63) are respectively opened at positions corresponding to the positions of the surfaces of the connecting column rod (62) and the connecting sleeve (61), and are connected by the connecting bolts (64).

4. The cutting equipment for producing ductile iron pipes according to claim 2, characterized in that: It also includes a positioning mechanism (4) arranged at the bottom of the frame (1), the positioning mechanism (4) including an air intake base (41) and a pneumatic protruding rod (42), wherein: A lower half ring placement groove (14) is respectively provided on the inner wall of the fixing frame (11) and the surface of the placement portion (13) at positions corresponding to the position of the limiting hole (32); an upper half ring placement groove (211) is provided on the bottom of the pressure seat (21) at a position corresponding to the position of the lower half ring placement groove (14); the limiting hole (32), the lower half ring placement groove (14) and the upper half ring placement groove (211) are respectively adapted to the outer dimensions of the tube body (10); and the tube body (10) is slidably connected to the inner wall of the limiting hole (32) and the inner wall of the lower half ring placement groove (14); The air intake base (41) is fixedly connected to the bottom of the frame (1) and corresponds to the position of the lower half ring placement groove (14); the pneumatic protrusion (42) is arranged on the top of one end of the air intake base (41) and is located outside the lower half ring placement groove (14) opened on the inner wall of the fixing frame (11).

5. The cutting device for producing ductile iron pipes according to claim 4, characterized in that: It also includes a cutting mechanism (5) arranged on the surface of the fixing frame (11), the cutting mechanism (5) comprising a U-shaped frame (51), an electric screw translation mechanism (52), a mounting seat (53), a cutting wheel (54) and a driving motor (55), wherein: The U-shaped frame (51) is fixedly connected to the surface of the fixing frame (11); the electric screw translation mechanism (52) is arranged inside the U-shaped frame (51); the mounting seat (53) is slidably connected to the surface of the U-shaped frame (51) and is connected to one end of the electric screw translation mechanism (52); the cutting wheel (54) is rotatably connected to the surface of the mounting seat (53) and corresponds to the position of the tube body (10); the driving motor (55) is fixedly connected to the top of the mounting seat (53) and is connected to one end of the central axis of the cutting wheel (54) via a gear assembly arranged inside the mounting seat (53).

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