A pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe

Abstract

The utility model discloses a pipe arc-shaped opening cutting device which is convenient for forming an arc-shaped opening at the end of the pipe, belongs to the technical field of pipe processing, and comprises a base: a punching assembly for cutting is connected to the rear side of the top of the base; the punching assembly comprises a driving assembly, an elastic crimping assembly, a support assembly, a second discharge hole and an arc-shaped cutter, the driving assembly is fixedly installed on the top of the base, the driving end of the driving assembly is connected to the elastic crimping assembly, the elastic crimping assembly is located directly above the support assembly, and the support assembly is fixedly connected to the top of the base, the driving end of the driving assembly is also connected to the second discharge hole, and the second discharge hole is located at the rear side of the elastic crimping assembly, an arc-shaped cutter is provided on the top of the base, and the arc-shaped cutter is located below the second discharge hole. Through the above manner, the utility model is convenient for forming an arc-shaped opening at the end of the pipe, and at the same time, automatic loading, cutting and automatic unloading are realized, which is convenient for practical use, and only one driving device is needed for pressing and cutting, which is convenient for practical use.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline processing, in particular to a pipeline arc-shaped opening cutting device which is convenient for forming the arc-shaped opening at the end of the pipeline. Background Art

[0002] During the processing and use of stainless steel pipes, at the intersection of two perpendicular cylindrical stainless steel pipes, an arc cutting machine is required to cut the end of one of the stainless steel pipes into an arc-shaped port with the same arc as the outer circle of the other stainless steel pipe.

[0003] For example, Chinese patent CN209049948U discloses an arc punching machine for precise processing of arc openings of integrated gas stove gas pipes, including a machine body, a first hydraulic pump and a second hydraulic pump are respectively arranged in the machine body, a processing gantry is arranged on the top of the machine body, a first hydraulic cylinder is arranged on the top of the processing gantry, one end of the first hydraulic cylinder is connected to a first hydraulic pipe, the other end of the first hydraulic pipe is connected to the first hydraulic pump, the first hydraulic cylinder passes through the top of the processing gantry and a first hydraulic column is movably installed, a mounting groove is provided at the bottom of the first hydraulic column, an arc punching knife is arranged in the mounting groove, and the arc punching knife is fixedly connected to the first hydraulic column by mounting screws. The utility model simplifies the complex structure of the existing arc punching machine and controls it with a multi-stage hydraulic device, so that the whole machine can realize rapid clamping operation and reduce the labor intensity of the staff. It has a simple structure, low manufacturing cost, simple operation, easy replacement of punches, high working efficiency, long service life, and can punch arcs on a variety of short pipes.

[0004] Existing technical solution: The pressing and punching during arc punching require multiple driving devices to drive, which is not conducive to practical use. At the same time, automatic loading and unloading is impossible.

[0005] Based on this, the utility model designs a pipe arc-shaped opening cutting device which is convenient for forming the arc-shaped opening at the end of the pipe to solve the above-mentioned problem. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a pipe arc-shaped opening cutting device which is convenient for forming the arc-shaped opening at the end of the pipe.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe comprises a base:

[0009] A punching assembly for cutting is connected to the rear side of the top of the base;

[0010] The punching assembly includes a driving assembly, an elastic crimping assembly, a supporting assembly, a second discharge hole and an arc-shaped cutter. The driving assembly is fixedly installed on the top of the base. The driving end of the driving assembly is connected to the elastic crimping assembly. The elastic crimping assembly is located directly above the supporting assembly, and the supporting assembly is fixedly connected to the top of the base. The driving end of the driving assembly is also connected to the second discharge hole, and the second discharge hole is located at the rear side of the elastic crimping assembly. An arc-shaped cutter is opened on the top of the base, and the arc-shaped cutter is located below the second discharge hole.

[0011] The base is connected with a loading assembly for automatic loading at the left end of the material stripping assembly;

[0012] The base is connected with a material return assembly for discharging materials in front of the pipe connection of the magnetic material pusher assembly. When the pipe contacts the material return assembly, the pipe separates from the magnetic material pusher assembly and is discharged from the material return assembly.

[0013] The base is connected with a magnetic pushing assembly in front of the punching assembly for driving the pipeline to move.

[0014] Furthermore, the driving assembly includes a slide plate, a column, a top plate, a hydraulic press and a first spring. The column is symmetrically fixedly installed at the rear end of the top of the base. The top of the column is fixedly connected to the top plate. The middle end of the top of the top plate is fixedly connected to the hydraulic press. The output end of the hydraulic press passes through the top plate and is fixedly connected to the slide plate. The slide plate is slidably connected to the column through a sliding hole. The first spring is sleeved on the outer side of the column, and the first spring is located under the slide plate.

[0015] Furthermore, the elastic crimping assembly includes a second groove, a pressure plate, a transverse support plate, a second spring and a guide rod. The slide plate is symmetrically and slidably connected to the guide rod, the bottom of the guide rod is fixedly connected to the transverse support plate, and a second spring is sleeved on the guide rod. The upper and lower ends of the second spring are fixedly contacted with the bottom of the slide plate and the top of the transverse support plate. A pressure plate is fixedly connected between the transverse support plates, and the bottom of the pressure plate is slidably connected to the second groove, and the inner wall of the second groove is slidably connected to the outer wall of the pipe.

[0016] Furthermore, the support assembly includes a support seat and a first groove. The support seat is fixedly installed on the top of the base. The support seat is located directly below the pressure plate. The top of the support seat is provided with a first groove for use with the second groove.

[0017] Furthermore, the feeding assembly includes a transverse groove, an L-shaped slide plate, a material box, a first cylinder and a U-shaped groove, the left end of the front end of the top of the base is fixedly connected with the first cylinder and the material box, the lower end of the material box is provided with a transverse groove, the driving end of the first cylinder is fixedly connected with the L-shaped slide plate, the top of the L-shaped slide plate is slidably connected with the top of the transverse groove, and the right end of the L-shaped slide plate is provided with a U-shaped groove;

[0018] The distance between the bottom end of the U-shaped groove and the top of the L-shaped slide plate is the same as the diameter of the pipe.

[0019] Furthermore, the magnetic pushing assembly includes a second cylinder, a guide rail assembly, a connecting block and a magnetic arc-shaped pushing plate. The guide rails of the second cylinder and the guide rail assembly are fixedly installed on the top of the base. The output end of the second cylinder is fixedly connected with the connecting block. The bottom of the connecting block is fixedly connected with the slider of the guide rail assembly. The end of the connecting block near the material return assembly is fixedly connected with the magnetic arc-shaped pushing plate.

[0020] Furthermore, the material return assembly includes a first discharge hole, an L-shaped plate and a first arc-shaped groove. The base is provided with a first discharge hole in front of the support seat. The base is fixedly connected with an L-shaped plate in front of the first discharge hole. The upper end of the upright part of the L-shaped plate is provided with a first arc-shaped groove.

[0021] Furthermore, the center of the magnetic arc push plate coincides with the center of the pipe, and the radius of the arc of the magnetic arc push plate is smaller than the radius of the outer edge of the pipe, and the radius of the arc of the magnetic arc push plate is smaller than the radius of the first arc groove.

[0022] Furthermore, the center of the first arc-shaped groove coincides with the center of the support seat, and the radius of the first arc-shaped groove is larger than the radius of the inner edge of the pipeline and smaller than the radius of the inner edge of the pipeline.

[0023] Beneficial Effects

[0024] The utility model discloses that a pipe falls into a feeding component, the feeding component sends the pipe to the rear of the return component, the magnetic pushing component pushes the pipe on the feeding component to move onto the supporting component of the punching component, the feeding component returns to its original position, realizes automatic feeding, the driving component drives the elastic crimping component to move downward, the elastic crimping component and the supporting component cooperate to press the pipe, the driving component continues to drive the second discharge hole to move downward, the second discharge hole cuts the pipe, cuts two groups of arc openings at the end of the pipe, waste is discharged from the arc cutter, and it is convenient to form the arc opening at the end of the pipe, and then the magnetic pushing component drives the processed pipe to move forward, and after the pipe contacts the return component, the pipe is separated from the magnetic pushing component and discharged from the bottom of the return component, realizes automatic feeding, cutting and automatic feeding, is beneficial to practical use, and only one driving device is needed for pressing and cutting, which is beneficial to practical use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1The utility model is a pipe arc mouth cutting device main structure three-dimensional convenient for forming the arc mouth of the pipe end Figure 1 ;

[0027] Figure 2 This is a front view of the structure of a pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe according to the utility model;

[0028] Figure 3 This is a left view of the main structure of a pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe according to the utility model;

[0029] Figure 4 The utility model is a pipe arc mouth cutting device main structure three-dimensional convenient for forming the arc mouth of the pipe end Figure 2 ;

[0030] Figure 5 The utility model is a pipe arc mouth cutting device main structure three-dimensional convenient for forming the arc mouth of the pipe end Figure 3 Along;

[0031] Figure 6 The utility model is a pipe arc mouth cutting device main structure three-dimensional convenient for forming the arc mouth of the pipe end Figure 4 ;

[0032] Figure 7 for Figure 3 AA direction cross-sectional view.

[0033] The numbers in the figure represent:

[0034] 1. Base 2. Material withdrawal assembly 21. First discharge hole 22. L-shaped plate 23. First arc groove 3. Material loading assembly 31. Horizontal groove 32. L-shaped slide plate 33. Material box 34. First cylinder 35. U-shaped groove 4. Magnetic push assembly 41. Second cylinder 42. Guide rail assembly 43. Connecting block 44. Magnetic arc push plate 5. Punching assembly 51. Slide plate 52. Column 53. Top plate 54. Hydraulic press 55. First spring 56. Support seat 57. First groove 58. Second discharge hole 59. Second groove 510. Press plate 511. Horizontal support plate 512. Second spring 513. Arc cutter 514. Guide rod. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] The utility model is further described below in conjunction with embodiments.

[0037] In some embodiments, please refer to the attached instructions. Figure 1-7 , a pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe, comprising a base 1:

[0038] A punching assembly 5 for cutting is connected to the rear side of the top of the base 1;

[0039] The punching assembly 5 includes a driving assembly, an elastic crimping assembly, a supporting assembly, a second discharge hole 58 and an arc-shaped cutter 513. The driving assembly is fixedly mounted on the top of the base 1. The driving end of the driving assembly is connected to the elastic crimping assembly. The elastic crimping assembly is located directly above the supporting assembly, and the supporting assembly is fixedly connected to the top of the base 1. The driving end of the driving assembly is also connected to the second discharge hole 58, and the second discharge hole 58 is located on the rear side of the elastic crimping assembly. An arc-shaped cutter 513 is provided on the top of the base 1, and the arc-shaped cutter 513 is located below the second discharge hole 58.

[0040] The base 1 is connected to a loading assembly 3 for automatic loading at the left end of the material stripping assembly 2 .

[0041] The base 1 is connected with a material return assembly 2 for discharging materials in front of the pipe connection of the magnetic material pusher assembly 4. When the pipe contacts the material return assembly 2, the pipe separates from the magnetic material pusher assembly 4 and is discharged from the material return assembly 2.

[0042] The base 1 is connected to a magnetic pushing assembly 4 in front of the punching assembly 5 for driving the pipeline to move;

[0043] The pipe falls into the loading component 3, and the loading component 3 sends the pipe to the rear of the unloading component 2. The magnetic pushing component 4 pushes the pipe on the loading component 3 to move to the supporting component of the punching component 5, and the loading component 3 returns to its original position to realize automatic loading. The driving component drives the elastic crimping component to move downward, and the elastic crimping component and the supporting component cooperate to press the pipe. The driving component continues to drive the second discharge hole 58 to move downward, and the second discharge hole 58 cuts the pipe, cutting two groups of arc-shaped openings at the end of the pipe, and the waste is discharged from the arc-shaped cutter 513, which is convenient for the formation of the arc-shaped opening at the end of the pipe. Then the magnetic pushing component 4 drives the processed pipe to move forward. After the pipe contacts the unloading component 2, the pipe separates from the magnetic pushing component 4 and is discharged from the bottom of the unloading component 2, realizing automatic unloading, automatic loading, cutting, and automatic unloading, which is beneficial to practical use, and only one driving device is needed for pressing and cutting, which is beneficial to practical use.

[0044] In some embodiments, please refer to the attached instructions. Figure 1-7 The driving assembly includes a slide plate 51, a column 52, a top plate 53, a hydraulic press 54 and a first spring 55. The column 52 is symmetrically fixedly installed at the top rear end of the base 1. The top of the column 52 is fixedly connected to the top plate 53. The middle end of the top of the top plate 53 is fixedly connected to the hydraulic press 54. The output end of the hydraulic press 54 passes through the top plate 53 and is fixedly connected to the slide plate 51. The slide plate 51 is slidably connected to the column 52 through a sliding hole. The first spring 55 is sleeved on the outer side of the column 52, and the first spring 55 is located below the slide plate 51.

[0045] The elastic crimping assembly includes a second groove 59, a pressure plate 510, a transverse support plate 511, a second spring 512 and a guide rod 514. The slide plate 51 is symmetrically slidably connected to the guide rod 514. The bottom of the guide rod 514 is fixedly connected to the transverse support plate 511. The second spring 512 is sleeved on the guide rod 514. The upper and lower ends of the second spring 512 are fixedly contacted with the bottom of the slide plate 51 and the top of the transverse support plate 511. The pressure plate 510 is fixedly connected between the transverse support plates 511. The bottom of the pressure plate 510 is slidably connected to the second groove 59, and the inner wall of the second groove 59 is slidably connected to the outer wall of the pipeline.

[0046] The support assembly includes a support seat 56 and a first groove 57. The support seat 56 is fixedly mounted on the top of the base 1. The support seat 56 is located directly below the pressure plate 510. The top of the support seat 56 is provided with a first groove 57 used in conjunction with the second groove 59.

[0047] The magnetic pushing assembly 4 pushes the pipe into the first groove 57 of the supporting assembly of the punching assembly 5, and the hydraulic press 54 of the driving assembly drives the slide plate 51 to move along the column 52. The column 52 drives the second spring 512 of the elastic crimping assembly to move downward, and the second spring 512 drives the pressure plate 510 to move downward. The pressure plate 510 drives the second groove 59 to crimp with the pipe, and the pressure plate 510 and the supporting seat 56 cooperate to press the pipe. The slide plate 51 drives the arc cutter 513 to continue to move downward, and the arc cutter 513 cuts an arc-shaped opening on the pipe, and the waste is discharged from the second discharge hole 58.

[0048] The second spring 512 provides a movable space for the arc-shaped cutter 513, so that only one driving device is needed for pressing and cutting, which is convenient for practical use;

[0049] In some embodiments, please refer to the attached instructions. Figure 1-7 The feeding assembly 3 includes a transverse groove 31, an L-shaped slide plate 32, a material box 33, a first cylinder 34 and a U-shaped groove 35. The first cylinder 34 and the material box 33 are fixedly connected at the left end of the top front end of the base 1. The lower end of the material box 33 is provided with a transverse groove 31. The driving end of the first cylinder 34 is fixedly connected with the L-shaped slide plate 32. The top of the L-shaped slide plate 32 is slidably connected with the top of the transverse groove 31, and the right end of the L-shaped slide plate 32 is provided with a U-shaped groove 35.

[0050] The distance between the bottom end of the U-shaped groove 35 and the top of the L-shaped slide plate 32 is the same as the diameter of the pipe;

[0051] The first cylinder 34 of the feeding assembly 3 drives the L-shaped slide plate 32 to move, and the L-shaped slide plate 32 drives the U-shaped groove 35 to move into the transverse groove 31, and the pipe at the lower end of the material box 33 falls into the U-shaped groove 35. The first cylinder 34 pushes the L-shaped slide plate 32 to move, and the L-shaped slide plate 32 blocks the lower end of the material box 33 except the U-shaped groove 35, and the U-shaped groove 35 drives the pipe to move to the front of the first groove 57, so as to facilitate automatic feeding;

[0052] In some embodiments, please refer to the attached instructions. Figure 1-7 The magnetic pushing assembly 4 includes a second cylinder 41, a guide rail assembly 42, a connecting block 43 and a magnetic arc-shaped pushing plate 44. The guide rails of the second cylinder 41 and the guide rail assembly 42 are fixedly installed on the top of the base 1. The output end of the second cylinder 41 is fixedly connected with the connecting block 43. The bottom of the connecting block 43 is fixedly connected with the slider of the guide rail assembly 42. The end of the connecting block 43 near the material stripping assembly 2 is fixedly connected with the magnetic arc-shaped pushing plate 44.

[0053] The center of the magnetic arc push plate 44 coincides with the center of the pipe, and the radius of the arc of the magnetic arc push plate 44 is smaller than the radius of the outer edge of the pipe, and the radius of the arc of the magnetic arc push plate 44 is smaller than the radius of the first arc groove 23;

[0054] When the U-shaped groove 35 drives the pipeline to move to the front side of the magnetic arc push plate 44, the second cylinder 41 drives the connecting block 43 to move along the guide rail assembly 42, and the connecting block 43 drives the magnetic arc push plate 44 to contact the pipeline and push the pipeline into the first groove 57, which is convenient for loading. After processing, since the magnetic arc push plate 44 is magnetic, the second cylinder 41 drives the magnetic arc push plate 44 to move forward, and the magnetic arc push plate 44 drives the pipeline to move to the material return assembly 2.

[0055] In some embodiments, please refer to the attached instructions. Figure 1-7 The material return assembly 2 includes a first discharge hole 21, an L-shaped plate 22 and a first arc-shaped groove 23. The base 1 is provided with a first discharge hole 21 in front of the support seat 56. The base 1 is fixedly connected with an L-shaped plate 22 in front of the first discharge hole 21. The upper end of the upright portion of the L-shaped plate 22 is provided with a first arc-shaped groove 23.

[0056] The center of the first arc groove 23 coincides with the center of the support seat 56, and the radius of the first arc groove 23 is larger than the radius of the inner edge of the pipeline and smaller than the radius of the inner edge of the pipeline;

[0057] The magnetic arc push plate 44 drives the pipe to move to the material return component 2. The radius of the first arc groove 23 is larger than the radius of the inner edge of the pipe and smaller than the radius of the inner edge of the pipe, and the radius of the arc of the magnetic arc push plate 44 is smaller than the radius of the first arc groove 23. The pipe will contact the upright part of the L-shaped plate 22. The L-shaped plate 22 separates the pipe from the magnetic arc push plate 44, and the pipe is automatically discharged from the first discharge hole 21 by gravity, realizing automatic discharge.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pipe arc-shaped opening cutting device for facilitating the forming of an arc-shaped opening at the end of a pipe, comprising a base (1), characterized in that: A punching assembly (5) for cutting is connected to the top rear side of the base (1); The punching assembly (5) comprises a driving assembly, an elastic crimping assembly, a supporting assembly, a second discharge hole (58) and an arc-shaped cutter (513); the driving assembly is fixedly mounted on the top of the base (1); the driving end of the driving assembly is connected to the elastic crimping assembly; the elastic crimping assembly is located directly above the supporting assembly, and the supporting assembly is fixedly connected to the top of the base (1); the driving end of the driving assembly is also connected to the second discharge hole (58), and the second discharge hole (58) is located at the rear side of the elastic crimping assembly; the top of the base (1) is provided with an arc-shaped cutter (513), and the arc-shaped cutter (513) is located below the second discharge hole (58); The base (1) is connected to a loading component (3) for automatic loading at the left end of the material return component (2); The base (1) is connected to a material return assembly (2) for discharging materials at a position in front of the pipe connection of the magnetic material pusher assembly (4); when the pipe contacts the material return assembly (2), the pipe separates from the magnetic material pusher assembly (4) and is discharged from the material return assembly (2); The base (1) is connected to a magnetic material pushing assembly (4) in front of the punching assembly (5) for driving the pipeline to move.

2. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 1, characterized in that The driving assembly comprises a slide plate (51), a column (52), a top plate (53), a hydraulic press (54) and a first spring (55); the column (52) is symmetrically fixedly mounted on the top rear end of the base (1); the top of the column (52) is fixedly connected to the top plate (53); the middle of the top of the top plate (53) is fixedly connected to the hydraulic press (54); the output end of the hydraulic press (54) passes through the top plate (53) and is fixedly connected to the slide plate (51); the slide plate (51) is slidably connected to the column (52) through a sliding hole; the first spring (55) is sleeved on the outer side of the column (52), and the first spring (55) is located below the slide plate (51).

3. The pipe arc-shaped opening cutting device for facilitating the arc-shaped opening forming at the end of the pipe according to claim 2, characterized in that: The elastic crimping assembly comprises a second groove (59), a pressing plate (510), a transverse support plate (511), a second spring (512) and a guide rod (514); the slide plate (51) is symmetrically fitted and slidably connected to the guide rod (514); the bottom of the guide rod (514) is fixedly connected to the transverse support plate (511); the second spring (512) is sleeved on the guide rod (514); the upper and lower ends of the second spring (512) are fixedly contacted with the bottom of the slide plate (51) and the top of the transverse support plate (511); the pressing plate (510) is fixedly connected between the transverse support plates (511); the bottom of the pressing plate (510) is fitted and slidably connected to the second groove (59); the inner wall of the second groove (59) is fitted and slidably connected to the outer wall of the pipeline.

4. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 3, characterized in that: The support assembly comprises a support seat (56) and a first groove (57); the support seat (56) is fixedly mounted on the top of the base (1); the support seat (56) is located directly below the pressure plate (510); and the top of the support seat (56) is provided with a first groove (57) for use with the second groove (59).

5. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 4, characterized in that: The feeding assembly (3) comprises a transverse groove (31), an L-shaped slide plate (32), a material box (33), a first cylinder (34) and a U-shaped groove (35); the first cylinder (34) and the material box (33) are fixedly connected at the left end of the top front end of the base (1); the transverse groove (31) is provided at the lower end of the material box (33); the L-shaped slide plate (32) is fixedly connected at the driving end of the first cylinder (34); the top of the L-shaped slide plate (32) is slidably connected to the top of the transverse groove (31); and the right end of the L-shaped slide plate (32) is provided with a U-shaped groove (35); The distance between the bottom end of the U-shaped groove (35) and the top of the L-shaped slide plate (32) is the same as the diameter of the pipe.

6. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 5, characterized in that: The magnetic material pushing assembly (4) comprises a second cylinder (41), a guide rail assembly (42), a connecting block (43) and a magnetic arc-shaped pushing plate (44); the second cylinder (41) and the guide rails of the guide rail assembly (42) are fixedly mounted on the top of the base (1); the output end of the second cylinder (41) is fixedly connected to the connecting block (43); the bottom of the connecting block (43) is fixedly connected to a slider of the guide rail assembly (42); and the end of the connecting block (43) close to the material withdrawing assembly (2) is fixedly connected to the magnetic arc-shaped pushing plate (44).

7. The pipe arc-shaped opening cutting device for facilitating the arc-shaped opening forming at the end of the pipe according to claim 6, characterized in that: The material return assembly (2) comprises a first material discharge hole (21), an L-shaped plate (22) and a first arc-shaped groove (23); the base (1) is provided with the first material discharge hole (21) in front of the support seat (56); the base (1) is fixedly connected with the L-shaped plate (22) in front of the first material discharge hole (21); and the upper end of the upright portion of the L-shaped plate (22) is provided with the first arc-shaped groove (23).

8. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 7, characterized in that: The center of the magnetic arc-shaped push plate (44) coincides with the center of the pipe, and the radius of the arc of the magnetic arc-shaped push plate (44) is smaller than the radius of the outer edge of the pipe, and the radius of the arc of the magnetic arc-shaped push plate (44) is smaller than the radius of the first arc-shaped groove (23).

9. The pipe arc-shaped opening cutting device for facilitating the forming of the arc-shaped opening at the end of the pipe according to claim 8, characterized in that: The center of the first arc-shaped groove (23) coincides with the center of the support seat (56), and the radius of the first arc-shaped groove (23) is larger than the radius of the inner edge of the pipeline and smaller than the radius of the inner edge of the pipeline.

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