Pipe fitting grooving machine

Abstract

The invention discloses a pipe fitting grooving machine, and relates to the technical field of pipe fitting machining devices. The device comprises a horizontally-arranged cross beam, wherein a guide rail A is arranged on one side of the cross beam; a pair of electric sliding blocks A is arranged on the guide rail A, rotating motors are installed on the electric sliding blocks A, and the ends of the rotating motors are connected with plugs which are inserted into the inner wall of the pipe fitting and fixed to the inner wall of the pipe fitting after being unfolded; a first grooving mechanism is arranged below the cross beam; the first grooving mechanism comprises a guide rail B with the length direction perpendicular to the guide rail A, an electric sliding block B is arranged on the guide rail B in a matched mode, and a cutting machine A composed of a cutting motor A and a cutting blade A is installed at the top of the electric sliding block B; the axial direction of the pipe fitting is perpendicular to the disc face of the cutting blade A. The pipe fitting is driven by the rotating motor to rotate, meanwhile, the cutting machine A transversely feeds along the guide rail B, and the annular groove in the outer wall of the pipe fitting is machined.

Description

Technical Field

[0001] The invention belongs to the technical field of pipe processing devices, and in particular relates to a pipe grooving machine. Background Art

[0002] During the production and processing of pipe fittings, grooving of the pipe fitting surface is involved. When grooving the pipe fitting surface, the conventional method is to fix the pipe fitting with a clamp, and then the worker is required to draw lines on the surface of the pipe fitting to mark the cutting area, and then groove it with a blade. However, this method has the problem of low processing efficiency and requires workers to measure and mark multiple times, which seriously affects the production efficiency of the enterprise and is not conducive to the production requirements of large-scale production.

[0003] For example, CN218461039U discloses an adjustable grooving machine for the production of fire-fighting pipe fittings, including a base, a positioning frame fixedly connected to the top of the base, a fixing assembly fixedly connected to the top of the base near the side wall, the fixing assembly including a fixing frame, a threaded rod threaded through the top of the fixing frame, a pressure block rotatably connected to the bottom of the threaded rod, the bottom pressure block is driven to slide stably in the slide groove by rotating the threaded rod, thereby pressing and fixing the pipe fitting, and a mounting frame fixedly connected to the top of the base away from the fixing frame, which is used to fix the position of the adjustment mechanism. When used, the above can only complete grooving along the length direction of the outer wall of the pipe, and cannot be used for grooving in the annular direction of the outer wall of the pipe. Summary of the Invention

[0004] The object of the present invention is to provide a pipe grooving machine, which drives a pipe (100) to rotate by a rotating motor (2), and simultaneously feeds a cutting machine A (52) laterally along a guide rail B (53), thereby realizing the processing of an annular groove on the outer wall of the pipe, thereby solving the problems raised by the existing background technology.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention relates to a pipe grooving machine, comprising a horizontally arranged crossbeam, a guide rail A being arranged on one side of the crossbeam; a pair of electric sliders A being arranged on the guide rail A, a rotating motor being mounted on the electric slider A, the end of the rotating motor being connected to a plug which is inserted into the inner wall of the pipe and fixed to the inner wall of the pipe after being unfolded; a first grooving mechanism being arranged below the crossbeam; the first grooving mechanism comprising a guide rail B whose length direction is perpendicular to the guide rail A, an electric slider B being arranged on the guide rail B, a cutting machine A consisting of a cutting motor A and a cutting blade A being mounted on the top of the electric slider B; the axial direction of the pipe is perpendicular to the disk surface of the cutting blade A; the pipe is driven to rotate by the rotating motor, and at the same time the cutting machine A is fed laterally along the guide rail B to realize the processing of an annular groove on the outer wall of the pipe.

[0006] Furthermore, the plug includes a rod body, which is connected to four tensioning rings with gaps along its length through a telescopic assembly, and an opening is set on one side of the tensioning ring; the outer wall of the tensioning ring is covered with a rubber layer; the telescopic assembly of the plug controls the expansion of the tensioning ring, and combined with the rubber layer, it tightly fits the inner wall of the pipe to avoid rotation and slipping.

[0007] Furthermore, a second grooving mechanism is provided below the crossbeam. The second grooving mechanism has the same structure as the first grooving mechanism and is respectively provided at both ends of the pipe fitting. The symmetrical layout of the first grooving mechanism and the second grooving mechanism allows the annular groove processing at both ends of the pipe fitting to be completed in one clamping operation.

[0008] Furthermore, it also includes an installation foundation formed by pouring cement; a vertical column is fixed on the installation foundation, and the top of the column is connected to one side of the beam; a mounting structure for installing the second grooving mechanism and / or the first grooving mechanism is provided on the installation foundation; the installation structure includes at least two rectangular grooves opened on the installation foundation, and the length direction of the rectangular groove is the same as the length direction of the guide rail A; a telescopic module A is provided on one side wall of the rectangular groove, and the end of the telescopic module A is connected to a movable block sliding along the inner wall of the rectangular groove, and a guide rod is provided on the end of the movable block, and a guide hole cooperating with the guide rod is provided on the other side wall of the rectangular groove; the rectangular groove of the installation foundation adjusts the spacing between the second grooving mechanism and the first grooving mechanism through the telescopic module A to adapt to pipes of different lengths.

[0009] Furthermore, a plurality of support structures extending upward to support the pipe fittings are provided on the installation foundation below the crossbeam; the support structure includes a square cylinder, a telescopic module C is provided on the bottom side of the cylinder, and a slider is connected to the end of the telescopic module C, and the slider is mounted on a T-rail, and the T-rail cooperates with the inner top side of a rectangular cover; the rectangular cover is sleeved on the outer wall of a rectangular tube, and a V-shaped frame supporting the pipe fittings is provided on the top of the rectangular cover; at least one inner wall of the rectangular tube is provided with a guide slide perpendicular to its own axial direction, and the top outer wall of the cylinder is provided with a guide slide groove cooperating with the guide slide; both ends of the rectangular tube are respectively threaded An adjusting bolt with an end resting on the outer wall of the cylinder is connected; a scale line is set on the outer side wall of the rectangular tube, and a pointer is set on the outer wall of the cylinder; a manual slide that moves in the vertical direction is installed on the electric slider A, and the rotating motor is installed on the manual slide; the rotating adjusting bolt pushes the cylinder to move along the length direction of the guide slide, thereby adjusting the left and right positions of the central axis of the pipe supported by the V-shaped frame during use; and the upper and lower positions of the central axis of the pipe are controlled to be adjusted under the action of the telescopic module C, thereby adjusting the central axis space of the pipe as a whole, so as to facilitate the control of the pipe supported on the supporting structure, so that the plug can be conveniently controlled to be inserted from the end of the pipe in subsequent operations.

[0010] Furthermore, a third grooving mechanism is provided on the mounting foundation located in the middle section of the beam; the third grooving mechanism includes a vertical column A, a vertical column B and a vertical column C installed on the mounting foundation; a horizontal support arm is rotatably installed on the top of the vertical column A, and threaded holes are provided on the tops of the vertical columns B and C, and a locking bolt A threadedly connected to the threaded hole is provided through one end of the support arm, and a telescopic module B is provided on the bottom side of the other end of the support arm, and a cutting machine B is connected to the end of the telescopic module B; the cutting machine B includes a cutting motor B and a cutting blade B, and the length direction of the guide rail B is perpendicular to the disk surface of the cutting blade B; the electric slider A is used to drive the axial movement of the pipe fitting, and the cutting machine B of the third grooving mechanism is cooperated to complete the grooving of the pipe fitting in the length direction; and after the support arm is rotated, it is fixed to the vertical column B / C by the locking bolt A, and the cutting machine B presses down to cooperate with the axial movement of the pipe fitting to realize the linear groove processing of the pipe body.

[0011] It also includes a dust suction device, which includes a dust suction hood arranged near the cutting blades of cutting machine A and cutting machine B, and a fan connected to the dust suction hood; by arranging the dust suction hood near the cutting blades and cooperating with the fan to absorb the dust generated by grooving in real time, the problem of dust splashing is effectively solved and the working environment is improved.

[0012] Furthermore, a boss is provided at the top of the vertical column A, a mounting hole is provided on the support arm, and a bearing is connected between the boss and the inner wall of the mounting hole; a step is provided at the top of the mounting hole, and the top end of the boss is fixed to a cover plate by a locking bolt B; four positioning columns A and four positioning columns B are provided on the bottom side of the cover plate, and a positioning hole B cooperating with the positioning column B is provided on the end face of the boss, and a positioning hole A cooperating with the positioning column A is provided on the step; the bearing supports the rotation of the support arm, and a loading mechanism A and a unloading structure A are respectively provided on both sides of the positioning column A, the positioning column B, the positioning hole A and one end of the positioning hole B.

[0013] Furthermore, a loading mechanism A and a loading mechanism B are provided on one side of the beam, and a unloading structure A and a unloading structure B are provided on the other side of the beam.

[0014] The loading mechanism A, loading mechanism B, unloading structure A and unloading structure B have the same structure, and all include a belt conveyor mechanism for conveying pipe fittings 100. Guide rail slider mechanisms are arranged on both sides of the belt conveyor mechanism along its length direction. A lifting mechanism is arranged on the sliding block of the guide rail slider mechanism. A V-shaped block supported on the outer wall of the pipe fitting 100 is installed on the top of the lifting mechanism; the loading mechanism A, loading mechanism B, unloading structure A and unloading structure B realize automatic conveying and positioning of pipe fittings.

[0015] The present invention has the following beneficial effects: The present invention drives the pipe fitting to rotate by a rotary motor, and simultaneously the cutting machine A feeds laterally along the guide rail B, thereby realizing the processing of the annular groove on the outer wall of the pipe fitting.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a structural diagram of a slotting machine in Example 1 of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A; Figure 3 for Figure 1 The main view; Figure 4 This is a schematic structural diagram of the third grooving mechanism in Embodiment 4 of the present invention; Figure 5 This is the connection relationship between the vertical column A and the support arm of the present invention; Figure 6 This is a schematic diagram of the plug structure of the present invention; Figure 7 This is a schematic diagram of the support structure of the present invention; Figure 8 is a cross-sectional view of the support structure of the present invention; Figure 9 This is a structural diagram of a slotting machine in Example 6 of the present invention; Figure 10 This is a structural diagram of a slotting machine in Example 7 of the present invention; In the accompanying drawings, the components represented by the reference numerals are as follows: 1. Installation foundation; 10. Column; 11. Crossbeam; 12. Guide rail A; 13. Electric slider A; 14. Rectangular groove; 141. Telescopic module A; 142. Movable block; 2. Rotating motor; 20. Plug; 200. Manual slide; 201. Rod; 202. Tensioning ring; 203. Opening; 204. Telescopic assembly; 3. Support structure; 30. Cylinder; 31. Telescopic module C; 32. Slider; 33. Rectangular cover; 331. T-rail; 34. Rectangular tube; 35. Guide slide; 36. Adjustment bolt; 37. V-frame; 38. Pointer; 39. Scale line; 4. Third grooving mechanism; 40. Vertical column A; 401. Boss; 402. Bearing; 41. Vertical column B; 42, vertical column C; 421, threaded hole; 43, support arm; 431, mounting hole; 432, locking bolt B; 433, step portion; 434, cover plate; 435, positioning column A; 436, positioning column B; 437, positioning hole A; 438, positioning hole B; 44, telescopic module B; 45, cutting machine B; 5, first grooving mechanism; 50, second grooving mechanism; 51, electric slider B; 52, cutting machine A; 53, guide rail B; 6a, loading mechanism A; 6b, unloading structure A; 6c, loading mechanism B; 6d, unloading structure B; 60, belt conveyor mechanism; 61, guide rail slider mechanism; 62, lifting mechanism; 100, pipe fitting; 204, telescopic assembly. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0021] Example 1: See also Figure 1, 3, the present invention is a pipe grooving machine, including an installation foundation 1 formed by cement pouring, a horizontally placed crossbeam 11 is fixedly connected to the installation foundation 1 through a plurality of fixed gaps and vertical columns 10, and a guide rail A12 is provided on one side of the crossbeam 11 to cooperate with a pair of electric sliders A13 on the upper side, a rotating motor 2 is installed on the electric slider A13, and a plug 20 is connected at the end of the rotating motor 2 to be inserted into the inner wall of the pipe 100 and fixed to the inner wall of the pipe 100 after being unfolded, and a first grooving mechanism 5 is provided below the crossbeam 11, the first grooving mechanism 5 includes a guide rail B53 whose length direction is perpendicular to the guide rail A12, an electric slider B51 is provided on the guide rail B53, and the top of the electric slider B51 includes a cutting The cutting machine A52 is composed of a motor A and a cutting blade A; the axial direction of the pipe 100 is perpendicular to the disk of the cutting blade A; and then when in use, the two ends of the pipe 100 are respectively fixed to the plug 20, and then the electric slider B51 is controlled along the length direction of the guide rail B53, and the cutting motor A and the rotating motor 2 are started synchronously, so as to realize cutting to form an annular groove on the outer wall of the pipe 100 when in use; when it is necessary to cut to form a second annular groove, the electric slider B51 is controlled along the length direction of the guide rail B53 until the cutting machine A52 moves out from under the pipe 100, and then the electric slider A13 is controlled to move along the length direction of the guide rail A12, and then the electric slider B51 is controlled along the length direction of the guide rail B53, and the second operation is completed. The outer wall of the pipe 100 can be grooved along the annular direction by repeating the operation.

[0022] Specifically, in order to facilitate the insertion of the plug 20 from the end of the pipe 100 and the connection with the pipe 100, the pipe 100 can be driven to rotate by the rotating motor 2. Figure 6 The plug 20 provided by the present invention includes a rod body 201 connected to the output end of the rotating motor 2. The rod body 201 is connected to four tensioning rings 202 with gaps along its length through a telescopic component 204. An opening 203 is provided on one side of the tensioning ring 202. The outer wall of the tensioning ring 202 is covered with a rubber layer. Before the control plug 20 is inserted into the pipe 100, the telescopic component 204 is controlled to retract. When the control plug 20 is inserted into the pipe 100, the telescopic component 204 is controlled to extend. The telescopic component 204 uses a cylinder.

[0023] Example 2: like Figure 1 and 3 On the basis of Example 1, in order to achieve synchronous grooving of the outer walls of the two ends of the pipe fitting 100 during use, a second grooving mechanism 50 is further provided below the crossbeam 11. The second grooving mechanism 50 has the same structure as the first grooving mechanism 5 and is respectively provided at both ends of the pipe fitting 100. Then, during use, the synchronous grooving is completed by controlling the synchronous operation of the second grooving mechanism 50 and the first grooving mechanism 5.

[0024] Example 3: like Figure 1 , 3. On the basis of the structure of Example 2, in order to adapt to the different lengths of the pipe fittings 100, the installation foundation 1 of the present invention is provided with an installation structure for installing the second grooving mechanism 50 and / or the first grooving mechanism 5; the installation structure includes at least two rectangular grooves 14 opened on the installation foundation 1, and the length direction of the rectangular grooves 14 is the same as the length direction of the guide rail A12; a telescopic module A141 is provided on one side wall of the rectangular groove 14, and the end of the telescopic module A141 is connected to a movable block 142 that slides along the inner wall of the rectangular groove 14, and a guide rod is provided on the end of the movable block 142, and a guide hole that cooperates with the guide rod is provided on the other side wall of the rectangular groove 14, and then by controlling the telescopic movement of the telescopic module A141 during use, the distance between the second grooving mechanism 50 and the first grooving mechanism 5 can be adjusted to meet the needs of adapting to the different lengths of the pipe fittings 100.

[0025] At the same time, based on the settings of the telescopic module A141, etc., when only the first grooving mechanism 5 is used to groove the outer wall of one end of the pipe 100, the pipe 100 can be kept stationary, and the cutting machine A52 of the moving belt of the telescopic module A141 and the electric slider B51 can be moved to open multiple annular grooves along the axial direction on the outer wall of one end of the pipe 100.

[0026] Example 4: like Figure 4 , 5. On the basis of Example 1, in order to facilitate the grooving of the outer wall of the pipe 100 along the length direction during use, a third grooving mechanism 4 is provided on the installation foundation 1 located in the middle section of the beam 11, and the third grooving mechanism 4 includes a vertical column A40, a vertical column B41 and a vertical column C42 installed on the installation foundation 1; a horizontal support arm 43 is rotatably installed on the top of the vertical column A40, and a threaded hole 421 is provided on the top of the vertical column B41 and the vertical column C42, and one end of the support arm 43 is provided with a threaded connection with the threaded hole 421. The locking bolt A431 is connected, and a telescopic module B44 is provided on the bottom side of the other end of the support arm 43, and the end of the telescopic module B44 is connected to the cutting machine B45; the cutting machine B45 includes a cutting motor B and a cutting blade B, and the length direction of the guide rail B53 is perpendicular to the disk surface of the cutting blade B. Based on this setting, when in use, the electric slider A13 is controlled to move along the length direction of the guide rail A12, thereby driving the pipe fitting 100 to move along its axial direction, and then the grooving operation of the pipe fitting 100 is completed under the action of the cutting machine B45.

[0027] At the same time, during use, when the third grooving mechanism 4 and the first grooving mechanism 5 are installed synchronously on the installation foundation 1, and when annular and axial grooving operations are performed as needed, in order to avoid obstruction during the loading and unloading operations of the pipe fitting 100, a boss 401 is provided on the top of the vertical column A40 of the present invention, and a mounting hole 431 is provided on the support arm 43, and a bearing 402 is connected between the boss 401 and the inner wall of the mounting hole 431; a step 433 is provided on the top of the mounting hole 431, and the top of the boss 401 is fixed to a cover plate 434 by a locking bolt B432; four positioning columns A435 and four positioning columns B436 are provided on the bottom side surface of the cover plate 434, and a positioning hole B438 is provided on the end face of the boss 401 for cooperating with the positioning column B436, and a positioning hole A437 is provided on the step 433 for cooperating with the positioning column A435. When in use, the rotation of the support arm 43 can be controlled to adjust the position of the cutting machine B45 as needed.

[0028] Specifically, it also includes a dust collection device, which includes a dust collection hood arranged near the cutting blades of the cutting machine A52 and the cutting machine B45, and a fan connected to the dust collection hood.

[0029] Example 5: On the basis of any one of Examples 1 and 4, in order to facilitate the control of loading and unloading of the pipe fittings 100 , a plurality of support structures 3 extending upward to support the pipe fittings 100 are further provided on the installation foundation 1 below the crossbeam 11 .

[0030] When used simultaneously, in order to facilitate the adjustment of the position according to the different outer diameters of the pipe 100, the central axis of the pipe 100 and the central axis of the plug 20 are collinear after the control support is realized, such as Figure 7 , 8. The support structure 3 includes a square cylinder 30, a telescopic module C31 is provided on the bottom side of the cylinder 30, and a slider 32 is connected to the end of the telescopic module C31, and the slider 32 is mounted on a T-rail 331, and the T-rail 331 is matched with the inner top side of a rectangular cover 33; the rectangular cover 33 is sleeved on the outer wall of a rectangular tube 34, and a V-shaped frame 37 for supporting the pipe 100 is provided on the top of the rectangular cover 33; at least one inner wall of the rectangular tube 34 is provided with a guide slide 35 perpendicular to its own axial direction, and the top outer wall of the cylinder 30 is provided with a guide groove that cooperates with the guide slide 35; the two ends of the rectangular tube 34 are respectively threadedly connected with adjustment bolts 36 whose ends rest on the outer wall of the cylinder 30; a scale line 39 is provided on an outer wall of the rectangular tube 34, and a pointer 38 is provided on the outer wall of the cylinder 30; a manual slide 200 that moves in the vertical direction is installed on the electric slider A13, and the rotating motor 2 is installed on the manual slide 200.

[0031] Example 6: Based on the embodiment 5, an annular groove is formed on the outer wall of the pipe 100, and in order to facilitate the automatic loading and unloading operation, as shown in FIG. Figure 9 A loading mechanism A6a and a unloading structure A6b are respectively provided on both sides of one end of the beam 11.

[0032] Example 7: Based on Example 5, an axial groove is formed on the outer wall of the pipe 100, such as Figure 10 A loading mechanism A6a and a loading mechanism B6c are provided on one side of the beam 11, and a unloading structure A6b and a unloading structure B6d are provided on the other side of the beam 11.

[0033] Based on this, when in use, the loading mechanism A6a and the loading mechanism B6c are used for loading, and the unloading structure A6b and the unloading structure B6d are used for unloading; If the material is first loaded through the loading mechanism A6a during use, then the electric slider A13 drives the pipe fitting 100 to move along its axial direction to perform the grooving operation, and the pipe fitting 100 is controlled to move from one end of the beam 11 to the other end. At this time, the unloading structure B6d is used for unloading; and the loading mechanism B6c is used to load the material at this work station. At this time, the electric slider A13 drives the pipe fitting 100 to move along its axial direction to perform the grooving operation, and the pipe fitting 100 is controlled to move from one end of the beam 11 to the other end. At this time, the unloading structure B6d is used for unloading.

[0034] It can be known that the loading mechanism A6a, loading mechanism B6c, unloading structure A6b and unloading structure B6d provided by the present invention have the same structure, and all include a belt conveyor mechanism 60 for conveying pipe fittings 100. Guide rail slider mechanisms 61 are arranged on both sides of the belt conveyor mechanism 60 along its length direction, and a lifting mechanism 62 is arranged on the sliding block of the guide rail slider mechanism 61. A V-shaped block supported on the outer wall of the pipe fitting 100 is installed on the top of the lifting mechanism 62.

[0035] The loading mechanisms A6a and B6c load the pipes alternately, and after the pipes are grooved, they are connected by the unloading structure B6d or the unloading structure A6b to realize assembly line operation.

[0036] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0037] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pipe grooving machine, characterized by: It comprises a horizontally arranged crossbeam (11), with a guide rail A (12) arranged on one side of the crossbeam (11); A pair of electric sliders A (13) are provided on the guide rail A (12), a rotating motor (2) is installed on the electric slider A (13), and a plug (20) is connected to the end of the rotating motor (2) and is inserted into the inner wall of the pipe (100) and fixed to the inner wall of the pipe (100) after being unfolded; A first slotting mechanism (5) is provided below the crossbeam (11); The first grooving mechanism (5) comprises a guide rail B (53) whose length direction is perpendicular to the guide rail A (12); an electric slider B (51) is provided on the guide rail B (53); a cutting machine A (52) comprising a cutting motor A and a cutting blade A is installed on the top of the electric slider B (51); The axial direction of the pipe (100) is perpendicular to the disk surface of the cutting blade A.

2. A pipe grooving machine according to claim 1, characterized in that: The plug (20) comprises a rod body (201), wherein the rod body (201) is connected to four tensioning rings (202) with gaps along its length direction via a telescopic assembly (204), and an opening (203) is provided on one side of the tensioning ring (202); and the outer wall of the tensioning ring (202) is covered with a rubber layer.

3. A pipe grooving machine according to claim 1, characterized in that: A second notching mechanism (50) is also provided below the crossbeam (11). The second notching mechanism (50) has the same structure as the first notching mechanism (5) and is respectively provided at both ends of the pipe (100).

4. A pipe grooving machine according to claim 1, characterized in that: Also included is an installation foundation (1) formed by pouring cement; A vertical column (10) is fixed on the installation foundation (1), and the top of the column (10) is connected to one side of the beam (11); The installation foundation (1) is provided with an installation structure for installing the second grooving mechanism (50) and / or the first grooving mechanism (5); The mounting structure comprises at least two rectangular grooves (14) formed on a mounting foundation (1), wherein the length direction of the rectangular grooves (14) is the same as the length direction of the guide rail A (12); a telescopic module A (141) is provided on one side wall of the rectangular groove (14); an end of the telescopic module A (141) is connected to a movable block (142) that slides along the inner wall of the rectangular groove (14); a guide rod is provided on the end of the movable block (142); and a guide hole that cooperates with the guide rod is provided on the other side wall of the rectangular groove (14).

5. A pipe grooving machine according to claim 4, characterized in that: A plurality of support structures (3) extending upward to support the pipe fittings (100) are also provided on the installation foundation (1) below the crossbeam (11); The support structure (3) comprises a square cylinder (30), a telescopic module C (31) is provided on the bottom side of the cylinder (30), an end of the telescopic module C (31) is connected to a slider (32), the slider (32) is mounted on a T-shaped rail (331), and the T-shaped rail (331) is mounted on the inner top side of a rectangular cover (33); The rectangular cover (33) is sleeved on the outer wall of a rectangular tube (34), and a V-shaped frame (37) for supporting the pipe (100) is provided on the top of the rectangular cover (33); At least one inner wall of the rectangular tube (34) is provided with a guide slide (35) perpendicular to its own axial direction, and the top outer wall of the cylinder (30) is provided with a guide slide groove cooperating with the guide slide (35); both ends of the rectangular tube (34) are respectively threadedly connected with adjustment bolts (36) whose ends abut against the outer wall of the cylinder (30); A scale line (39) is provided on an outer wall of the rectangular tube (34), and a pointer (38) is provided on the outer wall of the cylinder (30); A manual slide (200) movable in a vertical direction is mounted on the electric slider A (13), and the rotary motor (2) is mounted on the manual slide (200).

6. A pipe grooving machine according to claim 4, characterized in that: The installation foundation (1) located in the middle of the crossbeam (11) is provided with a third groove cutting mechanism (4); The third grooving mechanism (4) comprises a vertical column A (40), a vertical column B (41) and a vertical column C (42) installed on the installation foundation (1); A horizontal support arm (43) is rotatably mounted on the top of the vertical column A (40), a threaded hole (421) is provided on the top of each of the vertical columns B (41) and C (42), a locking bolt A (431) threadedly connected to the threaded hole (421) is provided through one end of the support arm (43), a telescopic module B (44) is provided on the bottom side of the other end of the support arm (43), and a cutting machine B (45) is connected to the end of the telescopic module B (44); The cutting machine B (45) comprises a cutting motor B and a cutting blade B, and the length direction of the guide rail B (53) is perpendicular to the disk surface of the cutting blade B.

7. A pipe grooving machine according to claim 6, characterized in that: A boss (401) is provided on the top of the vertical column A (40), a mounting hole (431) is provided on the support arm (43), and a bearing (402) is connected between the boss (401) and the inner wall of the mounting hole (431); The top of the mounting hole (431) is provided with a step portion (433), and the top end of the boss (401) is fixed with a cover plate (434) via a locking bolt B (432); four positioning columns A (435) and four positioning columns B (436) are provided on the bottom side of the cover plate (434), and a positioning hole B (438) cooperating with the positioning column B (436) is provided on the end face of the boss (401), and a positioning hole A (437) cooperating with the positioning column A (435) is provided on the step portion (433).

8. A pipe grooving machine according to any one of claims 4 and 7, characterized in that: A loading mechanism A (6a) and a unloading structure A (6b) are respectively provided on both sides of one end of the crossbeam (11).

9. A pipe grooving machine according to any one of claims 6 and 7, characterized in that: A loading mechanism A (6a) and a loading mechanism B (6c) are provided on one side of the crossbeam (11), and a unloading structure A (6b) and a unloading structure B (6d) are provided on the other side of the crossbeam (11).

10. A pipe grooving machine according to claim 6 or 7, characterized in that: The invention also includes a dust collecting device, which includes a dust collecting hood arranged near the cutting blades of the cutting machine A (52) and the cutting machine B (45), and a fan connected to the dust collecting hood.

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