A processing machine tool for cutting the bevel of pipe materials

Abstract

The present invention relates to the technical field of pipe processing, and discloses a processing machine tool for pipe bevel cutting, including a fixing ring for fixing on the outer side of a pipe. A rotating ring is rotatably arranged on one side of the fixing ring. An adjusting seat is fixed on the surface of the rotating ring. An installation seat is arranged on the adjusting seat. A cutting tool is arranged at the bottom of the installation seat. A spray head is arranged on one side of the cutting tool. A first annular groove is formed in the fixing ring. A first sliding rod is slidably arranged in the first annular groove. The end of the first sliding rod is slidably connected with a push plate. When the cutting tool performs bevel cutting on the pipe in the technical solution, cutting fluid is sprayed onto the cutting tool through the spray head, which can cool the cutting tool. At the same time, the left-right reciprocating movement of the first sliding rod drives the spray head to perform left-right reciprocating movement, so that the spray head can spray the cutting fluid back and forth along the cutting tool, which is beneficial to increasing the spraying range and further improving the spraying effect of the cutting fluid.

Description

Technical Field

[0001] The present invention relates to the technical field of pipe processing, and particularly to a processing machine tool for pipe bevel cutting. Background Technique

[0002] A pipe is a material used for making pipe fittings. Different pipe fittings require different pipes, and the quality of the pipe directly determines the quality of the pipe fitting. Before use, sometimes it is necessary to perform bevel cutting on the pipe. When performing bevel cutting on the pipe, it is necessary to process it through a processing machine tool for pipe bevel cutting. When using the cutting tool of the machine tool to perform bevel cutting on the pipe, in order to cool the cutting tool and lubricate the cutting surface, it is necessary to spray cutting fluid.

[0003] The existing processing machine tools generally use fixed-point spraying when spraying cutting fluid, that is, the position of the nozzle for spraying cutting fluid is fixed, and the cutting fluid is only sprayed at one position of the cutting tool. However, there are some problems with the above method: when processing a bevel with a relatively large width, the cutting edge of the cutting tool is also relatively wide. As a result, when the nozzle sprays cutting fluid, it can only spray on one area of the cutting tool and cannot spray on the entire cutting tool. When the cutting tool is performing cutting work, the position where the cutting fluid can be sprayed has a good cooling effect, while the position where the cutting fluid cannot be sprayed has a poor cooling effect, thus reducing the service life of the cutting tool. Summary of the Invention

[0004] The present invention provides a processing machine tool for pipe bevel cutting. When the nozzle sprays cutting fluid on the cutting tool, the rotating ring drives the first sliding rod to slide along the first annular groove, so that the first sliding rod can move reciprocally left and right, thereby driving the nozzle to move reciprocally left and right, enabling the nozzle to spray cutting fluid back and forth along the cutting tool, increasing the spraying range, and thus enhancing the spraying effect of the cutting fluid. This solves the problem mentioned in the above background technique that when the cutting tool is performing cutting work, the position where the cutting fluid can be sprayed has a good cooling effect, while the position where the cutting fluid cannot be sprayed has a poor cooling effect, thus reducing the service life of the cutting tool.

[0005] The present invention provides the following technical solution: A processing machine tool for pipe bevel cutting includes a fixing ring for fixing on the outer side of the pipe. A rotating ring is rotatably arranged on one side of the fixing ring. An adjusting seat is fixed on the surface of the rotating ring. An installation seat is arranged on the adjusting seat. A cutting tool is arranged at the bottom of the installation seat. A nozzle is arranged on one side of the cutting tool.

[0006] A first annular groove is formed in the fixed ring. A first sliding rod is slidably arranged in the first annular groove. The end of the first sliding rod is slidably connected with a push plate. A first convex post is slidably arranged on the other side of the push plate. A longitudinal rod is fixed to the end of the first convex post. The spray head is fixed to the bottom end of the longitudinal rod. A limiting plate is arranged on one side of the push plate. An inclined guiding groove is formed in the limiting plate. A second convex post which is slidably arranged in the inclined guiding groove is fixed to the longitudinal rod.

[0007] As an alternative solution of the processing machine tool for pipe bevel cutting according to the present invention, four clamping assemblies are arranged on the fixed ring. Each clamping assembly includes a servo electric cylinder fixed on the fixed ring, and a clamping plate for clamping on the surface of the pipe is fixed to the output end of the servo electric cylinder.

[0008] As an alternative solution of the processing machine tool for pipe bevel cutting according to the present invention, a speed reducer is fixed on the fixed ring. The input end of the speed reducer is connected with a servo motor, the output end of the speed reducer is connected with a gear. A toothed ring is rotatably arranged inside the fixed ring. The gear meshes with the toothed ring, and the toothed ring is fixedly connected with the rotating ring.

[0009] As an alternative solution of the processing machine tool for pipe bevel cutting according to the present invention, a wavy groove is formed in the inner wall of the first annular groove. A first sliding protrusion is fixed to the end of the first sliding rod. The first sliding protrusion is slidably arranged in the wavy groove.

[0010] As an alternative solution of the processing machine tool for pipe bevel cutting according to the present invention, the first sliding rod penetrates through the rotating ring. A cross plate is fixed to the top of the push plate. A positioning block is fixed to the surface of the mounting seat. A sliding groove is formed in the positioning block. The other end of the cross plate is slidably arranged in the sliding groove, and a connecting plate is fixed between the limiting plate and the mounting seat.

[0011] As an alternative solution of the processing machine tool for pipe bevel cutting according to the present invention, a second annular groove is formed in the fixed ring. A second sliding rod is slidably arranged inside the second annular groove. The second sliding rod penetrates through the rotating ring and the adjusting seat. The end of the second sliding rod is slidably connected with a moving plate. A moving block is fixed to the surface of the moving plate. A moving groove for the moving plate and the moving block to slide is formed inside the mounting seat. A first sliding groove is formed in the lower surface of the moving block. A first push rod is slidably arranged in the first sliding groove. A spring groove is formed inside the mounting seat. A convex plate which is slidably arranged in the spring groove is fixed to the outer surface of the first push rod. A first spring is fixed between the convex plate and the inner wall of the spring groove. A tool holder is fixed to the bottom end of the first push rod. A blade is installed at the bottom of the tool holder.

[0012] As an alternative solution for the processing machine tool for pipe bevel cutting according to the present invention, a first track groove is provided on the inner wall of the second annular groove, a second sliding protrusion is fixed to the end of the second sliding rod, and the second sliding protrusion is slidably disposed in the first track groove. The first track groove includes a stable portion, an inner movement portion, and an outer movement portion that are communicatively arranged.

[0013] As an alternative solution for the processing machine tool for pipe bevel cutting according to the present invention, a second track groove is provided on the inner wall of the first sliding groove, a third sliding protrusion is fixed to the end of the first push rod, and the third sliding protrusion is slidably disposed in the second track groove. The second track groove includes a first horizontal portion, a first descending portion, a second horizontal portion, and a first inclined portion that are sequentially communicatively arranged. A first one-way rotating piece is elastically provided at the connection between the first inclined portion and the first horizontal portion.

[0014] As an alternative solution for the processing machine tool for pipe bevel cutting according to the present invention, a movable groove is provided inside the tool holder, a sliding seat is slidably disposed inside the movable groove, the blade is fixedly connected to the bottom of the sliding seat, a second spring is fixed between the inner wall of the movable groove and one side of the sliding seat, a second push rod is fixed to the other side of the sliding seat, the second push rod is slidably connected to the tool holder, a limiting block is fixed to the lower surface of the mounting seat, and a second sliding groove is provided on the limiting block. The end of the second push rod is slidably disposed in the second sliding groove.

[0015] As an alternative solution for the processing machine tool for pipe bevel cutting according to the present invention, a third track groove is provided on the inner wall of the second sliding groove, a fourth sliding protrusion is fixed to the end of the second push rod, and the fourth sliding protrusion is slidably disposed in the third track groove. The third track groove includes a second descending portion, a second inclined portion, and a third inclined portion that are sequentially communicatively arranged. A second one-way rotating piece is provided at the connection between the third inclined portion and the second descending portion.

[0016] The present invention has the following beneficial effects:

[0017] 1. In the processing machine tool for pipe groove cutting, when the cutting tool performs groove cutting on the pipe, the cutting tool is sprayed with cutting fluid through the nozzle, so that the cutting tool can be cooled. At the same time, when the rotating ring rotates, the first slide bar can be driven to slide along the first annular groove, so that the first sliding protrusion slides along the wavy groove, so that the first slide bar can reciprocate left and right. The left and right reciprocating motion of the first slide bar can drive the nozzle to reciprocate left and right, so that the nozzle can spray the cutting fluid back and forth along the cutting tool, which is beneficial to increase the spraying range and increase the spraying effect of the cutting fluid. At the same time, when the first When the slide bar reciprocates left and right, the first slide bar drives the longitudinal bar to move through the push plate, and the longitudinal bar drives the second protrusion to slide along the inclined guide groove. By setting the inclination angle of the inclined guide groove to be consistent with the inclination angle of the cutting edge of the cutting tool, when the second protrusion slides along the inclined guide groove, it can drive the nozzle to reciprocate along the cutting edge of the cutting tool, thereby making the spraying position more precise and further improving the cooling effect. In addition, when processing larger grooves, the cutting fluid can be evenly sprayed onto the surface of the groove by the nozzle moving back and forth along the cutting edge of the cutting tool, thereby improving the lubrication effect.

[0018] 2. In the processing machine tool for pipe groove cutting, when the rotating ring rotates, it can drive the second slide bar to slide along the second annular groove, and the second slide bar drives the second sliding protrusion to slide along the first track groove, so that when the second slide bar rotates to a, it can reciprocate left and right once, and when the second slide bar moves to the right, it drives the moving block to move to the right, so that the first push rod slides in the first slide groove, and the first push rod drives the third sliding protrusion to slide in the second track groove, so that the first push rod can move downward and reset instantly, thereby driving the blade to move downward instantly, cutting off the waste chips and preventing the waste chips from being too long, effectively avoiding adverse effects, and at the same time reducing the problem of waste chips affecting the spraying of cutting fluid, which is beneficial to improving the cooling effect.

[0019] 3. In the processing machine tool for pipe groove cutting, when the blade cuts off the waste chips, after the blade instantly moves downward to the lowest position, the second push rod slides in the second slide groove, driving the fourth sliding protrusion to slide in the third track groove, and utilizing the action force of the second spring to drive the second push rod and the sliding seat to move, so that the sliding seat drives the blade to move, so that the blade moves horizontally relative to the flaky waste chips, so that when the blade presses down to cut off the waste chips, a horizontal pulling action can be performed, thereby making it easier to cut off the waste chips. In addition, in the process of the blade pressing down to cut off the waste chips, the newly generated waste chips will conflict with the blade and bend. Utilizing the bending effect, the waste chips are more likely to break, further improving the waste chip cutting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1One of the three-dimensional structure diagrams of the present invention.

[0021] Figure 2 Schematic diagram of the connection structure between the gear and the toothed ring in the present invention.

[0022] Figure 3 For the present invention Figure 1 Enlarged view at A in

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the spray head part from another perspective in the present invention.

[0024] Figure 5 Schematic diagram of the planar distribution of the wavy grooves in the fixing ring of the present invention.

[0025] Figure 6 Another three-dimensional structure diagram of the present invention.

[0026] Figure 7 For the present invention Figure 6 Enlarged view at B in

[0027] Figure 8 Cross-sectional view of the structure of the fixing ring and the mounting seat parts of the present invention.

[0028] Figure 9 For the present invention Figure 8 Enlarged view at C in

[0029] Figure 10 For the present invention Figure 9 Schematic diagram of the structure of the second track groove part in the present invention.

[0030] Figure 11 For the present invention Figure 8 Enlarged view at D in

[0031] Figure 12 For the present invention Figure 11 Schematic diagram of the structure of the third track groove part in the present invention.

[0032] Figure 13 Distribution diagram of the first annular groove and the second annular groove in the present invention.

[0033] Figure 14 Schematic diagram of the internal connection structure between the second one-way rotating piece and the limiting block in the present invention.

[0034] In the figure: 1, pipe; 2, fixed ring; 3, rotating ring; 4, adjusting seat; 5, mounting seat; 6, cutting tool; 7, spray head; 8, first annular groove; 9, first sliding rod; 10, push plate; 11, first convex post; 12, longitudinal rod; 13, limiting plate; 14, inclined guiding groove; 15, second convex post; 16, clamping assembly; 161, servo electric cylinder; 162, clamping plate; 17, speed reducer; 18, servo motor; 19, gear; 20, toothed ring; 21, wavy groove; 22, first sliding protrusion; 23, cross plate; 24, positioning block; 25, slideway; 26, connecting plate; 27, second annular groove; 28, second sliding rod; 29, moving block; 30, moving groove; 31, first sliding groove; 32, first push rod; 33, spring groove; 34, convex plate; 35, first spring; 36, tool holder; 37, blade; 38, first track groove; 381, stable part; 382, inner moving part; 383, outer moving part; 39, second sliding protrusion; 41, second track groove; 411, first horizontal part; 412, first descending part; 413, second horizontal part; 414, first inclined part; 415, first one-way rotating piece; 42, third sliding protrusion; 43, moving groove; 44, sliding seat; 45, second spring; 46, second push rod; 47, limiting block; 48, second sliding groove; 49, third track groove; 50, fourth sliding protrusion; 501, second descending part; 502, second inclined part; 503, third inclined part; 504, second one-way rotating piece; 51, moving plate; 52, rotating groove; 53, rotating rod; 54, torsion spring; 55, abutting block; 56, limiting rod. Detailed implementation mode

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1, please refer to Figures 1 - 14 , a processing machine tool for bevel cutting of pipe 1, including a fixed ring 2 for fixing on the outer side of pipe 1, a rotating ring 3 is rotatably arranged on one side of the fixed ring 2, an adjusting seat 4 is fixed on the surface of the rotating ring 3, a mounting seat 5 is arranged on the adjusting seat 4, a cutting tool 6 is arranged at the bottom of the mounting seat 5, and a spray head 7 is arranged on one side of the cutting tool 6;

[0037] A first annular groove 8 is formed in the fixed ring 2. A first sliding rod 9 is slidably arranged in the first annular groove 8. The end of the first sliding rod 9 is slidably connected with a push plate 10. A first convex post 11 is slidably arranged on the other side of the push plate 10. A vertical rod 12 is fixed to the end of the first convex post 11. The spray head 7 is fixed to the bottom end of the vertical rod 12. A limiting plate 13 is arranged on one side of the push plate 10. An inclined guiding groove 14 is formed in the limiting plate 13. A second convex post 15 which is slidably arranged in the inclined guiding groove 14 is fixed to the vertical rod 12;

[0038] Four groups of clamping assemblies 16 are arranged on the fixed ring 2. The clamping assembly 16 includes a servo electric cylinder 161 fixed to the fixed ring 2. The output end of the servo electric cylinder 161 is fixed with a clamping plate 162 for clamping on the surface of the pipe 1;

[0039] A speed reducer 17 is fixed to the fixed ring 2. The input end of the speed reducer 17 is connected with a servo motor 18. The output end of the speed reducer 17 is connected with a gear 19. A toothed ring 20 is rotatably arranged inside the fixed ring 2. The gear 19 meshes with the toothed ring 20. The toothed ring 20 is fixedly connected with the rotating ring 3;

[0040] A wavy groove 21 is formed in the inner wall of the first annular groove 8. A first sliding protrusion 22 is fixed to the end of the first sliding rod 9. The first sliding protrusion 22 is slidably arranged in the wavy groove 21;

[0041] The first sliding rod 9 penetrates through the rotating ring 3. A cross plate 23 is fixed to the top of the push plate 10. A positioning block 24 is fixed to the surface of the mounting seat 5. A sliding groove 25 is formed in the positioning block 24. The other end of the cross plate 23 is slidably arranged in the sliding groove 25. A connecting plate 26 is fixed between the limiting plate 13 and the mounting seat 5.

[0042] In this technical solution, when grooving the pipe 1, first, the fixed ring 2 is sleeved on the outside of the pipe 1. The servo motor 18 is used to push the clamping plate 162 to move, so that the clamping plate 162 clamps the pipe 1 to complete the positioning work of the fixed ring 2. Then, the servo motor 18 and the speed reducer 17 are used to drive the gear 19 to rotate. The gear 19 drives the toothed ring 20 to rotate. The toothed ring 20 drives the rotating ring 3 to rotate. The rotating ring 3 drives the cutting tool 6 to rotate, so that the cutting tool 6 performs grooving cutting on the pipe 1. At the same time, the cutting fluid is sprayed onto the cutting tool 6 through the spray head 7.

[0043] When the nozzle 7 sprays cutting fluid onto the cutting tool 6, the rotation ring 3 rotates, driving the first slide bar 9 to rotate, causing the first slide bar 9 to slide along the first annular groove 8. The first slide bar 9 drives the first sliding protrusion 22 to slide along the wavy groove 21, so that the first sliding protrusion 22 drives the first slide bar 9 to perform reciprocating left and right motion. The reciprocating left and right motion of the first slide bar 9 drives the push plate 10 to perform reciprocating left and right motion. The reciprocating left and right motion of the push plate 10 drives the vertical rod 12 to perform reciprocating left and right motion. The reciprocating left and right motion of the vertical rod 12 drives the nozzle 7 to perform reciprocating left and right motion, enabling the nozzle 7 to spray the cutting tool 6 in a reciprocating left and right manner, thereby increasing the spraying range and facilitating the cooling of the cutting tool 6;

[0044] During bevel cutting, the cutting edge of the cutting tool 6 needs to be set at an inclination angle equal to that of the bevel. During cutting, it is also the cutting edge of the cutting tool 6 that contacts the pipe 1. Therefore, the cutting edge of the cutting tool 6 most requires spraying of cutting fluid. Thus, by providing the limiting plate 13 and the inclined guide groove 14, and setting the inclination angle of the inclined guide groove 14 to be consistent with the inclination angle of the cutting edge of the cutting tool 6, when the push plate 10 drives the vertical rod 12 to perform reciprocating left and right motion, the vertical rod 12 drives the second convex column 15 to perform reciprocating left and right motion. Restricted by the inclined guide groove 14, the second convex column 15 will slide along the inclined guide groove 14, causing the vertical rod 12 to drive the first convex column 11 to slide inside the push plate 10, so that the nozzle 7 can spray along the direction of the cutting edge of the cutting tool 6, making the spraying position more accurate and further improving the cooling effect;

[0045] In this technical solution, when the cutting tool 6 performs bevel cutting on the pipe 1, the control system moves the mounting seat 5 on the adjusting seat 4, and the mounting seat 5 drives the cutting tool 6 to move to complete the feeding action of the cutting tool 6. The above control of the feeding work of the cutting tool 6 belongs to the prior art and is not the innovation point of this application, so no detailed description will be given. To meet the feeding work of the cutting tool 6, when the mounting seat 5 moves, the push plate 10, the limiting plate 13, the vertical rod 12 and the nozzle 7 can be driven to move synchronously through the cross plate 23, the positioning block 24 and the connecting plate 26, and the first slide bar 9 is slidably connected to the surface of the push plate 10 to avoid jamming. In addition, the first slide bar 9 and the first convex column 11 can only slide up and down with respect to the push plate 10, and the ends of the first slide bar 9 and the first convex column 11 will not be removed from the inside of the push plate 10, enabling the first slide bar 9 to drive the push plate 10 to move, and the push plate 10 to drive the first convex column 11 to move. Similarly, the cross plate 23 can only slide horizontally in the slideway 25 and will not separate from the positioning block 24.

[0046] Embodiment 2. When the cutting tool 6 performs bevel cutting on the pipe 1, sheet-shaped waste chips will continuously be generated in front of the cutting tool 6. During the cutting process, the sheet-shaped waste chips will form a spiral structure. If the waste chips are not processed, the length of the waste chips will become longer and longer. The longer waste chips not only affect the spraying of the cutting fluid, making it inconvenient to accurately spray the cutting fluid onto the cutting tool 6 and reducing the cooling effect, but also the longer waste chips are prone to winding around the workpiece, resulting in adverse effects. To address this problem, this embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figures 1 - 14 , a second annular groove 27 is formed in the fixed ring 2, a second sliding rod 28 is slidably arranged inside the second annular groove 27, the second sliding rod 28 penetrates through the rotating ring 3 and the adjusting seat 4, the end of the second sliding rod 28 is slidably connected with a moving plate 51, a moving block 29 is fixed on the surface of the moving plate 51, a moving groove 30 for the moving plate 51 and the moving block 29 to slide is formed inside the mounting seat 5, a first sliding groove 31 is formed on the lower surface of the moving block 29, a first push rod 32 is slidably arranged inside the first sliding groove 31, a spring groove 33 is formed inside the mounting seat 5, a convex plate 34 slidably arranged inside the spring groove 33 is fixed on the outer surface of the first push rod 32, a first spring 35 is fixed between the convex plate 34 and the inner wall of the spring groove 33, the bottom end of the first push rod 32 is fixed with a tool holder 36, and a blade 37 is installed at the bottom of the tool holder 36;

[0047] A first track groove 38 is formed on the inner wall of the second annular groove 27, a second sliding protrusion 39 is fixed at the end of the second sliding rod 28, the second sliding protrusion 39 is slidably arranged inside the first track groove 38, and the first track groove 38 includes a connected stable part 381, an inner moving part 382, and an outer moving part 383;

[0048] A second track groove 41 is formed on the inner wall of the first sliding groove 31, a third sliding protrusion 42 is fixed at the end of the first push rod 32, the third sliding protrusion 42 is slidably arranged inside the second track groove 41, and the second track groove 41 includes a first horizontal part 411, a first descending part 412, a second horizontal part 413, and a first inclined part 414 which are connected in sequence. A first one-way rotating piece 415 is elastically arranged at the connection between the first inclined part 414 and the first horizontal part 411.

[0049] In this technical solution, when the rotating ring 3 rotates, it drives the second sliding rod 28 to slide inside the second annular groove 27, and the second sliding rod 28 drives the second sliding protrusion 39 to slide along the first track groove 38. When the second sliding protrusion 39 slides from the stable part 381 to the inner moving part 382 and slides along the inner moving part 382, as Figure 8 and Figure 9As shown, the second sliding protrusion 39 drives the second sliding rod 28 to move rightward, and the second sliding rod 28 moves rightward to drive the moving plate 51 and the moving block 29 to slide rightward in the moving groove 30, and the moving block 29 slides rightward. Relatively speaking, the first push rod 32 moves leftward in the first sliding groove 31, and the first push rod 32 drives the third sliding protrusion 42 to slide along the second track groove 41. First, the third sliding protrusion 42 slides along the first horizontal portion 411. When the second sliding protrusion 39 slides with the connection between the inner moving portion 382 and the outer moving portion 383, the third sliding protrusion 42 slides to the connection between the first horizontal portion 411 and the first descending portion 412. At this time, the third sliding protrusion 42 loses its resistance, and the first spring 35 releases its force, so that the third sliding protrusion 42 slides along the first descending portion 412, prompting The first push rod 32 moves downward, and the first push rod 32 drives the tool holder 36 to move downward, so that the blade 37 cuts off the flaky waste generated by cutting; when the second sliding protrusion 39 slides along the outer moving portion 383, the second sliding protrusion 39 drives the second slide bar 28 to reset to the left, and the second slide bar 28 drives the moving plate 51 and the moving block 29 to reset to the left. Relatively speaking, the first push rod 32 slides to the right along the first sliding groove 31, so that the third sliding protrusion 42 first slides along the second horizontal portion 413, and then slides along the first inclined portion 414. At this time, the first spring 35 is stretched and stored until the third sliding protrusion 42 slides to the initial position, and the third sliding protrusion 42 drives the first push rod 32 to move upward, and the first push rod 32 drives the blade 37 to reset upward;

[0050] In the present technical solution, the inner moving portion 382 in the first track groove 38 is arranged Figure 13 The second slide bar 28 is slidably connected to the movable plate 51, and the end of the second slide bar 28 can only slide up and down inside the movable plate 51, and will not slide out from the movable plate 51, so that the second slide bar 28 can drive the movable plate 51 to move synchronously, and will not affect the feeding work of the cutting knife 6; in addition, by setting the first one-way rotating piece 415, and the first one-way rotating piece 415 can only be pressed as shown in the figure. Figure 10 The state shown is upward rotation, and cannot be pressed. Figure 10Rotating downward in the shown state, when the third sliding protrusion 42 slides along the first inclined portion 414 and abuts against the first one-way rotating piece 415, it prompts the first one-way rotating piece 415 to rotate upward. The first one-way rotating piece 415 is elastically connected to the inner wall of the moving block 29 through a torsion spring 54. When the first one-way rotating piece 415 rotates upward, the torsion spring 54 stores energy. When the third sliding protrusion 42 slides to the first horizontal portion 411, the first one-way rotating piece 415 loses the abutment of the third sliding protrusion 42, and the torsion spring 54 releases energy, causing the first one-way rotating piece 415 to reset to the initial state. Since the first one-way rotating piece 415 cannot rotate downward in the state as shown in Figure 10 the shown state, the third sliding protrusion 42 can only slide leftward along the first horizontal portion 411 and will not slide downward along the first inclined portion 414.

[0051] Embodiment 3 is an improvement made on the basis of Embodiment 2. Specifically, please refer to Figures 1 - 14 , an activity groove 43 is opened inside the tool holder 36. A sliding seat 44 is slidably arranged inside the activity groove 43. The blade 37 is fixedly connected to the bottom of the sliding seat 44. A second spring 45 is fixed between the inner wall of the activity groove 43 and one side of the sliding seat 44. A second push rod 46 is fixed on the other side of the sliding seat 44. The second push rod 46 is slidably connected to the tool holder 36. A limiting block 47 is fixed on the lower surface of the mounting seat 5. A second sliding groove 48 is opened on the limiting block 47. The end of the second push rod 46 is slidably arranged inside the second sliding groove 48;

[0052] A third track groove 49 is opened on the inner wall of the second sliding groove 48. A fourth sliding protrusion 50 is fixed at the end of the second push rod 46. The fourth sliding protrusion 50 is slidably arranged inside the third track groove 49. The third track groove 49 includes a second descending portion 501, a second inclined portion 502 and a third inclined portion 503 which are connected in sequence. A second one-way rotating piece 504 is arranged at the connection between the third inclined portion 503 and the second descending portion 501.

[0053] In this technical solution, when the tool holder 36 moves, it drives the second push rod 46 to slide along the second sliding groove 48. The second push rod 46 drives the fourth sliding protrusion 50 to slide along the third track groove 49. First, when the tool holder 36 moves downward, it drives the second push rod 46 to move downward, causing the fourth sliding protrusion 50 to slide along the second descending portion 501. When the fourth sliding protrusion 50 slides to the bottom of the second descending portion 501, the fourth sliding protrusion 50 loses the abutment, and the second spring 45 releases energy, pushing the sliding seat 44 to move inside the activity groove 43. The sliding seat 44 drives the second push rod 46 to move, causing the fourth sliding protrusion 50 to slide along the second inclined portion 502, enabling the blade 37 to perform a horizontal movement relative to the sheet-shaped waste. Thus, when the blade 37 presses down and cuts the waste, a horizontal pulling action can be performed once, making it more convenient to cut the waste;

[0054] When the fourth sliding protrusion 50 slides along the second inclined portion 502, the third sliding protrusion 42 slides along the second horizontal portion 413, and then when the third sliding protrusion 42 slides along the first inclined portion 414, the fourth sliding protrusion 50 slides along the third inclined portion 503 until the reset is completed;

[0055] In this technical solution, through the arranged second one-way rotating piece 504, and the second one-way rotating piece 504 can only rotate rightward in the state as shown in Figure 12 shown, and cannot rotate leftward in the state as shown in Figure 12 shown. When the fourth sliding protrusion 50 slides along the second inclined portion 502 and abuts against the second one-way rotating piece 504, it prompts the second one-way rotating piece 504 to rotate rightward. The second one-way rotating piece 504 is also elastically connected to the inner wall of the limiting block 47 through a torsion spring 54. When the second one-way rotating piece 504 rotates rightward, the torsion spring 54 stores energy. When the fourth sliding protrusion 50 slides to the third inclined portion 503, the second one-way rotating piece 504 loses the abutment of the fourth sliding protrusion 50, and the torsion spring 54 releases energy, causing the second one-way rotating piece 504 to reset to the initial state. Since the second one-way rotating piece 504 cannot rotate rightward in the state as shown in Figure 12 shown, the fourth sliding protrusion 50 can only slide downward along the second descending portion 501 and will not slide downward along the second inclined portion 502;

[0056] Specifically describe the structures at the first one-way rotating piece 415 and the second one-way rotating piece 504. The operating principles of the first one-way rotating piece 415 and the second one-way rotating piece 504 are the same. The following takes the second one-way rotating piece 504 as an example for description: Figure 14 As a schematic diagram of the internal connection structure of the second one-way rotating piece 504 and the limiting block 47, a rotating groove 52 is opened inside the limiting block 47. A rotating rod 53 is fixed at the end of the second one-way rotating piece 504. The rotating rod 53 is rotatably arranged in the rotating groove 52. A torsion spring 54 is sleeved on the circumference of the rotating rod 53. The c end of the torsion spring 54 abuts against one side of the second one-way rotating piece 504. The b end of the torsion spring 54 is fixedly connected to the inner wall of the rotating groove 52. And a resisting block 55 is fixedly arranged inside the rotating groove 52. A limiting rod 56 that abuts against the resisting block 55 is fixed on the rotating rod 53; As shown in Figure 14 shown, through the arranged resisting block 55, the second one-way rotating piece 504 can only rotate rightward in the Figure 14 state. When rotating leftward, the limiting rod 56 abuts against the resisting block 55, making it impossible to rotate leftward. When the second one-way rotating piece 504 rotates rightward, it makes the second one-way rotating piece 504 abut against the c end of the torsion spring 54, causing the torsion spring 54 to store energy. When the second one-way rotating piece 504 loses the abutment, the torsion spring 54 releases energy, causing the second one-way rotating piece 504 to reset.

[0057] It should be noted that in this text, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0058] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A machine tool for pipe groove cutting, comprising a fixing ring (2) for fixing on the outside of a pipe (1), characterized in that: A rotating ring (3) is rotatably provided on one side of the fixed ring (2); an adjusting seat (4) is fixed on the surface of the rotating ring (3); a mounting seat (5) is provided on the adjusting seat (4); a cutting knife (6) is provided at the bottom of the mounting seat (5); and a nozzle (7) is provided on one side of the cutting knife (6); The fixing ring (2) is provided with a first annular groove (8), a first sliding rod (9) is slidably arranged in the first annular groove (8), the end of the first sliding rod (9) is slidably connected to a push plate (10), a first convex column (11) is slidably arranged on the other side of the push plate (10), a longitudinal rod (12) is fixed to the end of the first convex column (11), the nozzle (7) is fixed to the bottom end of the longitudinal rod (12), a limiting plate (13) is provided on one side of the push plate (10), an inclined guide groove (14) is provided on the limiting plate (13), and a second convex column (15) slidably arranged in the inclined guide groove (14) is fixed on the longitudinal rod (12).

2. The machine tool for pipe groove cutting according to claim 1, characterized in that: Four groups of clamping assemblies (16) are arranged on the fixing ring (2), and the clamping assembly (16) comprises a servo electric cylinder (161) fixed on the fixing ring (2), and a clamping plate (162) for clamping on the surface of the pipe (1) is fixed at the output end of the servo electric cylinder (161).

3. The machine tool for pipe groove cutting according to claim 2, characterized in that: A reducer (17) is fixed on the fixed ring (2), the input end of the reducer (17) is connected to a servo motor (18), the output end of the reducer (17) is connected to a gear (19), a gear ring (20) is rotatably arranged inside the fixed ring (2), the gear (19) meshes with the gear ring (20), and the gear ring (20) is fixedly connected to the rotating ring (3).

4. The machine tool for pipe groove cutting according to claim 3, characterized in that: A wave-shaped groove (21) is provided on the inner wall of the first annular groove (8), a first sliding protrusion (22) is fixed to the end of the first sliding rod (9), and the first sliding protrusion (22) is slidably disposed in the wave-shaped groove (21).

5. The machine tool for pipe groove cutting according to claim 4, characterized in that: The first slide bar (9) is arranged to pass through the rotating ring (3), a transverse plate (23) is fixed on the top of the push plate (10), a positioning block (24) is fixed on the surface of the mounting seat (5), a slideway (25) is provided on the positioning block (24), the other end of the transverse plate (23) is slidably arranged in the slideway (25), and a connecting plate (26) is fixed between the limit plate (13) and the mounting seat (5).

6. The machine tool for pipe groove cutting according to claim 5, characterized in that: The fixed ring (2) is provided with a second annular groove (27), a second slide bar (28) is slidably arranged inside the second annular groove (27), the second slide bar (28) passes through the rotating ring (3) and the adjusting seat (4), the end of the second slide bar (28) is slidably connected with a moving plate (51), a moving block (29) is fixed on the surface of the moving plate (51), a moving groove (30) for the moving plate (51) and the moving block (29) to slide is provided inside the mounting seat (5), and the moving block (29) is provided with a moving groove (30) for the moving plate (51) and the moving block (29) to slide. A first slide groove (31) is provided on the lower surface, a first push rod (32) is slidably arranged in the first slide groove (31), a spring groove (33) is provided inside the mounting seat (5), a convex plate (34) slidably arranged in the spring groove (33) is fixed on the outer surface of the first push rod (32), a first spring (35) is fixed between the convex plate (34) and the inner wall of the spring groove (33), a tool seat (36) is fixed at the bottom end of the first push rod (32), and a blade (37) is installed at the bottom of the tool seat (36).

7. The machine tool for pipe groove cutting according to claim 6, characterized in that: A first track groove (38) is provided on the inner wall of the second annular groove (27), a second sliding protrusion (39) is fixed to the end of the second sliding rod (28), and the second sliding protrusion (39) is slidably arranged in the first track groove (38), and the first track groove (38) includes a stabilizing portion (381), an inward moving portion (382) and an outward moving portion (383) which are connected to each other.

8. The machine tool for pipe groove cutting according to claim 7, characterized in that: A second track groove (41) is provided on the inner wall of the first slide groove (31); a third sliding protrusion (42) is fixed to the end of the first push rod (32); the third sliding protrusion (42) is slidably arranged in the second track groove (41); the second track groove (41) comprises a first horizontal portion (411), a first descending portion (412), a second horizontal portion (413) and a first inclined portion (414) which are connected in sequence; a first one-way rotating piece (415) is elastically arranged at the connection between the first inclined portion (414) and the first horizontal portion (411).

9. The machine tool for pipe groove cutting according to claim 8, characterized in that: A movable groove (43) is provided inside the tool seat (36), a sliding seat (44) is slidably provided inside the movable groove (43), the blade (37) is fixedly connected to the bottom of the sliding seat (44), a second spring (45) is fixed to the inner wall of the movable groove (43) and one side of the sliding seat (44), a second push rod (46) is fixed to the other side of the sliding seat (44), the second push rod (46) is slidably connected to the tool seat (36), a limiting block (47) is fixed to the lower surface of the mounting seat (5), a second sliding groove (48) is provided on the limiting block (47), and the end of the second push rod (46) is slidably provided in the second sliding groove (48).

10. The machine tool for pipe groove cutting according to claim 9, characterized in that: A third track groove (49) is provided on the inner wall of the second slide groove (48), a fourth sliding protrusion (50) is fixed to the end of the second push rod (46), and the fourth sliding protrusion (50) is slidably arranged in the third track groove (49), and the third track groove (49) includes a second descending portion (501), a second inclined portion (502) and a third inclined portion (503) which are connected in sequence, and a second one-way rotating piece (504) is provided at the connection between the third inclined portion (503) and the second descending portion (501).

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