Pipe end processing machine

Abstract

The invention discloses a pipe end processing machine, and relates to the technical field of metal pipe processing, the pipe end processing machine comprises a processing table, a motor is fixedly mounted on the processing table, a saw blade in transmission connection with the motor is rotatably connected to the processing table, the pipe end processing machine further comprises a removing mechanism, and the removing mechanism comprises a supporting plate and an air pump fixedly mounted on the processing table; an air conveying cylinder communicating with an exhaust port of the supporting plate is fixedly connected to the interior of the supporting plate, an ion generator is installed in the air conveying cylinder, and an exhaust nozzle is fixedly connected to the interior of the supporting plate. The air flow control unit can control the air flow to be sprayed out in a pulse mode, ions are released to the saw blade at a high speed in a short time, the contact opportunity of the ions and electrostatic charges is increased, and therefore the metal pipe grooving effect is improved, and the metal pipe grooving efficiency is improved. The static elimination efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal pipe processing, in particular to a pipe end processing machine. BACKGROUND

[0002] At present, in the metal pipe processing industry, the pipe end is generally processed by slotting through stamping or cutting equipment. The stamping slotting processing speed is fast, the forming quality is high, and the processing precision can be ensured. However, the equipment cost is high, and the shape of the slot is determined by the die, so the size of the slot cannot be flexibly adjusted. The cutting slotting equipment is generally composed of a motor and a saw blade, and the equipment structure is simple, and the slotting depth and width can be flexibly controlled, so it is suitable for small batch and multi-variety production mode. Therefore, although the cutting slotting processing speed is lower than that of stamping, it is still widely used in the field of metal pipe processing.

[0003] However, when the traditional pipe end processing machine uses a saw blade to slot the metal pipe end wall, the surface charge distribution of the saw blade changes due to high-speed friction with the metal pipe, causing sawdust to be attracted to the saw blade under the action of static electricity. When the saw blade contacts the metal pipe, the sawdust particles will rub against the cutting surface of the metal pipe, causing scratches on the cutting surface, which reduces the cutting processing effect of the metal pipe end. SUMMARY

[0004] The purpose of the present application is to solve the problem that when the saw blade slots the metal pipe end wall, the surface charge distribution of the saw blade changes due to high-speed friction with the metal pipe, causing sawdust to be attracted to the saw blade under the action of static electricity. When the saw blade contacts the metal pipe, the sawdust particles will rub against the cutting surface of the metal pipe, causing scratches on the cutting surface, which reduces the cutting processing effect of the metal pipe. A pipe end processing machine is proposed.

[0005] In order to achieve the above purpose, the present application adopts the following technical solution: a pipe end processing machine comprising a processing table, a motor fixedly installed on the processing table, a saw blade rotationally connected to the motor, and further comprising: A cleaning mechanism comprising a support plate and a gas pump fixedly installed on the processing table, an air cylinder fixedly connected to the support plate and in communication with the exhaust port of the support plate, an ion generator installed in the air cylinder, an exhaust nozzle fixedly connected to the inside of the support plate, an air flow control unit provided between the exhaust nozzle and the air cylinder, the air flow control unit comprising a three-way pipe fixedly connected between the exhaust nozzle and the air cylinder, two air bags fixedly connected to the two branches of the three-way pipe, and a pressure block slidingly connected to the inside of the support plate. When the gas pump delivers air containing positive and negative ions to the saw blade, the pressure block alternately extrudes the air inside the two air bags.

[0006] As a further description of the above scheme: the top of the support plate is provided with a heat conduction unit, the heat conduction unit comprises a heat conduction block fixedly connected to the top surface of the support plate and in contact with the metal pipe, and the bottom of the heat conduction block is fixedly connected with a metal sheet extending into the inside of the gas conveying cylinder.

[0007] As a further description of the above scheme: further comprising a transmission assembly and a polishing mechanism, the polishing mechanism comprises a pair of sliding blocks slidingly connected to the inside of the support plate, one side of the sliding block is fixedly connected with a friction plate fixed with the pressing block, and a push block is arranged between each pair of two sliding blocks.

[0008] As a further description of the above scheme: the transmission assembly comprises two gears rotatingly connected to the inside of the support plate and meshing with each other, one side of one of the gears is fixedly connected with an impeller rotatingly connected to the inside of the gas conveying cylinder, and a rotating shaft is fixedly connected between the other gear and the push block.

[0009] As a further description of the above scheme: further comprising a flow guide mechanism, the flow guide mechanism comprises a connecting frame slidingly connected to the inside of the exhaust nozzle, and a plurality of flow guide plates are movably connected in the inside of the exhaust nozzle and arranged in parallel at equal intervals, and each flow guide plate is rotatably connected with the connecting frame.

[0010] As a further description of the above scheme: both ends of the connecting frame are fixedly connected with a wind baffle located at the air inlet of the exhaust nozzle, and a folding cloth is fixedly connected between the connecting frame and the inner wall of the exhaust nozzle.

[0011] As a further description of the above scheme: further comprising a supporting mechanism, the supporting mechanism comprises a mounting rod fixed to the machining table by bolts, a threaded rod is rotatably connected in the inside of the mounting rod, a sliding frame is threadedly connected to the outside of the threaded rod and slidingly connected to the inside of the mounting rod, and a supporting rod is hingedly connected between the sliding frame and the support plate and between the mounting rod and the support plate.

[0012] As a further description of the above scheme: the support plate is provided with two and arranged symmetrically around the mounting rod, and the mounting rod can be fixed to the height of the machining table by bolts.

[0013] As described above, due to the adoption of the above-mentioned pipe end machining machine, the beneficial effects of the present application are: The application utilizes the air pump and the ion generator to blow the airflow containing positive and negative ions to the cutter head of the saw blade, neutralizes the static electricity on the cutter head when the saw blade rotates to cut the metal pipe, reduces the sawdust attached to the saw blade under the action of static electricity, makes the groove wall more smooth and flat after cutting the groove of the metal pipe, and thus improves the cutting processing effect of the pipe end.

[0014] The polishing mechanism can polish the inner wall of the metal pipe during the cutting and grooving process, removes burrs and flash in real time, makes the edge of the inner wall of the metal pipe neat, improves the cutting processing efficiency and effect of the metal pipe, and the air bag can play a buffering effect under the elastic force of the air bag when the polishing mechanism operates, reduces the collision of the sliding block with the push block under the action of inertia, helps to improve the service life of the two and reduces noise.

[0015] The flow guide mechanism adjusts the blowing direction of the airflow after each pulse airflow is blown out, not only makes the pulse airflow containing positive and negative ions cover the static electricity on different positions of the saw blade more comprehensively, ensures that the static electricity in each area can be effectively neutralized, avoids the situation that the static electricity is partially left, but also improves the effect of removing the sawdust by the airflow, and prevents the accumulation of sawdust due to the existence of the dead angle.

[0016] The heat conduction unit can transfer the heat generated at the cutting position when the metal pipe end is cut to the inside of the air conveying cylinder, heat the airflow containing ions, accelerate the movement speed of the ions, and thus realize the neutralization of static electricity in a shorter time and improve the effect of removing static electricity.

[0017] The height of the support plate can be adjusted to facilitate the cutting and processing of metal pipes with different diameters, and the inner wall of the metal pipe can be supported by the two support plates, which not only facilitates the positioning of the metal pipe and prevents the metal pipe from shifting during processing, but also supports the periphery of the cutting position of the pipe body, avoids the bending and deformation of the cutting position of the metal pipe due to the cutting stress generated by the saw blade, and thus further improves the cutting and processing effect of the metal pipe end. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 An overall schematic diagram provided by an embodiment of the application is shown; Figure 2 An air pump schematic diagram provided by an embodiment of the application is shown; Figure 3A schematic view of a mounting rod cross section is shown according to an embodiment of the present application; Figure 4 A schematic view of a gas conveying cylinder cross section is shown according to an embodiment of the present application; Figure 5 A schematic view of a gas conveying cylinder cross section is shown according to an embodiment of the present application; Figure 4 An enlarged view of A in the middle; Figure 6 A schematic view of a gas conveying cylinder cross section is shown according to an embodiment of the present application; Figure 4 An enlarged view of B in the middle; Figure 7 A schematic view of an exhaust nozzle cross section is shown according to an embodiment of the present application; Figure 8 A schematic view of a deflector state switching is shown according to an embodiment of the present application.

[0019] Legend: 10, processing table; 11, motor; 12, saw blade; 20, supporting mechanism; 21, mounting rod; 22, threaded rod; 23, sliding carriage; 24, supporting rod; 30, cleaning mechanism; 31, supporting plate; 32, gas conveying cylinder; 33, ion generator; 34, exhaust nozzle; 35, air flow control unit; 351, tee joint; 352, air bag; 353, pressing block; 36, heat conduction unit; 361, heat conduction block; 362, metal sheet; 37, air pump; 40, transmission assembly; 41, impeller; 42, gear; 50, polishing mechanism; 51, friction plate; 52, sliding block; 53, pushing block; 54, rotating shaft; 60, deflector mechanism; 61, connecting frame; 62, deflector; 63, wind shield; 64, folding cloth. DETAILED DESCRIPTION

[0020] The technical one pipe end processing machine in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative labor fall within the protection scope of the present application.

[0021] As Figures 1-8As shown, the present application provides: a pipe end processing machine, comprising a processing table 10, a motor 11 is fixedly installed on the processing table 10, a saw blade 12 is rotatably connected with the motor 11 on the processing table 10, the motor 11 drives the circular saw blade 12 to rotate through the belt drive to cut the metal pipe end, in order to avoid the metal pipe from deviating during processing, a limiting device for clamping the metal pipe is arranged on the processing table 10, after the metal pipe passes through the limiting device, only the metal pipe can be manually pushed to move axially, the pipe end cutting and grooving depth is adjusted by controlling the metal pipe moving distance, further comprising: A cleaning mechanism 30, the cleaning mechanism 30 comprises a support plate 31 and a gas pump 37 fixedly installed on the processing table 10, the inside of the support plate 31 is fixedly connected with a gas cylinder 32 communicated with the exhaust port of the support plate 31 through a hose, in order to prevent the hose from being scattered and interfering with the processing, the hose is bound outside the mounting rod 21 through a binding belt, the inside of the gas cylinder 32 is installed with an ion generator 33, the ion generator 33 makes the gas molecules in the air ionize by generating an electric field, after the electrons in the gas molecules obtain enough energy, they will escape from the molecules to form free electrons and positive ions, the escaping electrons will collide with other neutral gas molecules to ionize more gas molecules, a large number of positive and negative ions are generated, when the saw blade 12 is positively charged, the negative ions will be attracted and neutralized with the positive charge, on the contrary, when the surface of the saw blade 12 is negatively charged, the positive ions will be neutralized with it, so as to achieve the purpose of eliminating static electricity, avoid the sawdust from adhering to the saw blade 12 under the action of static electricity, the inside of the support plate 31 is fixedly connected with an exhaust nozzle 34, the exhaust nozzle 34 is inclined downward, so that the airflow blows downward from the exhaust nozzle 34 to blow the sawdust generated by cutting the metal pipe downward to prevent the sawdust from flying, the exhaust nozzle 34 and the gas cylinder 32 are provided with an airflow control unit 35, one end of the airflow control unit 35 is communicated with the gas cylinder 32, the other two branch ends are respectively communicated with both ends of the exhaust nozzle 34, the airflow control unit 35 comprises a three-way pipe 351 fixed between the exhaust nozzle 34 and the gas cylinder 32, the two branches of the three-way pipe 351 are fixedly connected with air bags 352, the inside of the support plate 31 is slidably connected with a pressing block 353, when the gas pump 37 delivers the air containing positive and negative ions to the saw blade 12, the pressing block 353 reciprocally moves to alternately extrude the air inside the two air bags 352, so that the air inside the air bags 352 is accelerated to spray out of the exhaust nozzle 34, therefore, the airflow can be sprayed out of the exhaust nozzle 34 in the form of pulse, so that the ions in the airflow can be more quickly diffused to the surface of the saw blade 12 and the sawdust, improve the static electricity elimination efficiency, and the airflow can more powerfully blow the sawdust adhering to the saw blade 12 to fall off to achieve the effect of removing the sawdust, the purpose of arranging the three-way pipe 351 and the two air bags 352 is to make the process of spraying the airflow in the form of pulse not appear the condition of completely interrupting the airflow, thereby improving the static electricity elimination efficiency.

[0022] Reference Figure 4 And Figure 5Since the ion movement speed will be accelerated under heating condition, and the metal pipe end will be accelerated to dissipate heat when cutting, the top of the support plate 31 is provided with a heat conduction unit 36, which comprises a heat conduction block 361 fixedly connected to the top surface of the support plate 31 and in contact with the metal pipe, and a metal sheet 362 extending into the inside of the gas conveying cylinder 32 and fixedly connected to the bottom of the heat conduction block 361. The heat generated at the cutting position of the metal pipe can be transmitted to the inside of the gas conveying cylinder 32 through the heat conduction block 361 and the metal sheet 362. This design not only accelerates the heat dissipation at the cutting position of the metal pipe, avoids the deformation of the metal pipe under thermal stress, but also utilizes the heat, thereby improving the ion movement speed and facilitating the elimination of static electricity.

[0023] With reference to Figure 4 , Figure 5 and Figure 6 , in order to remove the burrs generated on the inner wall of the slot of the metal pipe after slotting, the device further comprises a transmission assembly 40 and a polishing mechanism 50. The polishing mechanism 50 comprises a pair of sliding blocks 52 slidingly connected to the inside of the support plate 31. One side of each sliding block 52 is fixedly connected with a friction plate 51 fixed with a pressing block 353. A push block 53 is arranged between each pair of two sliding blocks 52. The push block 53 alternately pushes the two sliding blocks 52 in opposite directions when rotating, thereby driving the two sliding blocks 52 and the friction plate 51 to move back and forth. The top of the friction plate 51 is in contact with the edge of the cutting position of the metal pipe and is provided with a file tooth. The friction plate 51 removes the burrs generated when the metal pipe is slotted by friction when moving back and forth, thereby improving the cutting processing effect and efficiency of the metal pipe end. When the push block 53 pushes one of the sliding blocks 52 to move the friction plate 51 in one direction, the air bag 352 buffers the pressing block 353 and the friction plate 51 by its own elastic force, thereby reducing the impact between the other sliding block 52 and the push block 53 under inertia when the friction plate 51 stops moving. The transmission assembly 40 comprises two intermeshing gears 42 rotatingly connected to the inside of the support plate 31. One side of one of the gears 42 is fixedly connected with an impeller 41 rotatingly connected to the inside of the gas conveying cylinder 32. A rotating shaft 54 is fixedly connected between the other gear 42 and the push block 53. The impeller 41 rotates by air flow thrust and drives the push block 53 to rotate under the transmission of the gears 42 and the rotating shaft 54. The purpose of this design is to simultaneously remove the burrs and eliminate static electricity when the metal pipe is cut, thereby avoiding the sawdust generated by removing the burrs from adhering to the saw blade 12 under the action of static electricity, and simplifying the operation complexity of the device. Meanwhile, the arrangement of the impeller 41 in the inside of the gas conveying cylinder 32 can also make the ions generated by the ion generator 33 disperse uniformly, thereby making the ions exert the best performance. The gas conveying cylinder 32, the three-way pipe 351 and the exhaust nozzle 34 all have insulation performance, thereby preventing the ions from being lost during the conveying process.

[0024] With reference to Figure 7 and Figure 8In order to make the pulse airflow containing positive and negative ions cover the electrostatic charges on the different positions of the saw blade 12 more comprehensively, ensure that the electrostatic charges of each area can be effectively neutralized, and improve the effect of removing sawdust by airflow, the device further comprises a flow guide mechanism 60, the flow guide mechanism 60 comprises a connecting frame 61 which is slidingly connected to the inside of the exhaust nozzle 34, a plurality of flow guide plates 62 which are equidistantly and parallelly arranged are movably connected to the inside of the exhaust nozzle 34, each flow guide plate 62 is rotatably connected to the connecting frame 61, both ends of the connecting frame 61 are fixedly connected to the air baffle 63 which is located at the air inlet of the exhaust nozzle 34, when one of the air bags 352 is extruded by the pressing block 353, the air inside the air bag 352 will accelerate into the exhaust nozzle 34 through one of the branches of the three-way pipe 351, at this time, the other air bag 352 is in the process of deformation recovery, the airflow entering the exhaust nozzle 34 through the other branch of the three-way pipe 351 is reduced, therefore, there is a difference in the air flow thrust at the air inlets of both ends of the exhaust nozzle 34, under this difference, the air baffle 63 and the connecting frame 61 will move towards one side of the exhaust nozzle 34, driving the flow guide plates 62 to tilt, the tilting direction of the flow guide plates 62 changes constantly due to the alternating extrusion of the two air bags 352, so as to realize the change of the airflow discharge angle, improve the coverage degree of the airflow, and strengthen the effects of removing static electricity and sawdust, the folding cloth 64 is fixedly connected between the connecting frame 61 and the inner wall of the exhaust nozzle 34, so as to prevent the airflow entering the inside of the exhaust nozzle 34 from leaking out of the gap between the end of the connecting frame 61 and the inner wall of the exhaust nozzle 34, and improve the adjusting effect of the airflow direction.

[0025] With reference to Figure 2 And Figure 3 In order to ensure the flexibility of the device, the device further comprises a supporting mechanism 20, the supporting mechanism 20 comprises a mounting rod 21 which is fixed to the machining table 10 by bolts, the mounting rod 21 can be changed in height by bolts fixed to the machining table 10, so that the supporting plate 31 can be attached to the inner wall of metal pipes of various models, thereby improving the applicability of the device, a threaded rod 22 is rotatably connected to the inside of the mounting rod 21, a sliding frame 23 which is slidingly connected to the inside of the mounting rod 21 is threadedly connected to the outside of the threaded rod 22, a supporting rod 24 is hingedly connected between the sliding frame 23 and the supporting plate 31 and between the mounting rod 21 and the supporting plate 31, rotating the threaded rod 22 can drive the sliding frame 23 to slide in the mounting rod 21, the supporting plate 31 is expanded outwardly through the supporting rod 24, the supporting plate 31 is provided with two and arranged symmetrically around the mounting rod 21, the two supporting plates 31 are expanded synchronously until they are supported on the inner wall of the metal pipe, which can position the metal pipe and prevent the metal pipe from shifting during cutting, and the middle part of the supporting plate 31 is provided with a groove for the saw blade 12 to pass through, the top end of the supporting plate 31 can support the edges on both sides of the slotted position of the metal pipe, so as to avoid bending deformation of the cutting position of the metal pipe.

[0026] Working principle: manually rotating the threaded rod 22 drives the sliding frame 23 to slide inside the mounting rod 21, the sliding frame 23 moves through the support rod 24 to expand the support plates 31 outward, so that the distance between the outer sides of the two support plates 31 is equal to the diameter of the metal pipe to be processed, then adjust the height of the mounting rod 21 fixed on the processing table 10 by bolts, so that the axis of the mounting rod 21 coincides with the axis of the metal pipe, and the preparation before cutting the end of the metal pipe is completed; Start the motor 11 to drive the saw blade 12 to rotate, then manually push the metal pipe to make the metal pipe fit on the outside of the two support plates 31, continue to push the metal pipe until the end of the metal pipe contacts the saw blade 12 for cutting, start the air pump 37 to deliver the air outside to the inside of the air cylinder 32, at this time the ion generator 33 is electrified to generate positive and negative ions into the airflow, the airflow with ions passes through the three-way pipe 351, the air bag 352 and the exhaust nozzle 34 to be sprayed onto the cutter head of the saw blade 12, neutralize the static electricity on the cutter head of the saw blade 12, reduce the adhesion of sawdust, and improve the quality of the metal pipe cutting surface; The airflow flows to drive the impeller 41 to rotate, the impeller 41 rotates to drive the rotating shaft 54 and the push block 53 to rotate through the two gears 42, so that the push block 53 alternately pushes the two sliding blocks 52 in opposite directions to drive the friction plate 51 to reciprocate, the friction plate 51 reciprocates to polish the edges on both sides of the metal pipe cutting position, achieving deburring effect; The pressure block 353 alternately extrudes the two air bags 352 during the reciprocating movement of the friction plate 51, so that the air in the air bag 352 is sprayed out of the exhaust nozzle 34 in pulse form, improving the efficiency of static electricity elimination and sawdust removal effect, when one of the air bags 352 is extruded by the pressure block 353, the air in the air bag 352 will accelerate into the exhaust nozzle 34 through one branch of the three-way pipe 351, at this time the other air bag 352 is in the process of deformation recovery, the airflow entering the exhaust nozzle 34 through the other branch of the three-way pipe 351 is reduced, therefore the airflow thrust at the air inlet of both ends of the exhaust nozzle 34 will be different, under this difference, the baffle 63 and the connecting frame 61 will move towards one side of the exhaust nozzle 34, driving the deflector 62 to tilt, the deflector 62 changes the direction of inclination constantly due to the alternating extrusion of the two air bags 352, so as to change the angle of airflow discharge, improve the coverage of airflow, and strengthen the effect of static electricity elimination and sawdust removal.

[0027] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A pipe end processing machine, comprising a processing table (10), a motor (11) fixedly installed on the processing table (10), and a saw blade (12) rotationally connected to the processing table (10) and drivingly connected to the motor (11), characterized in that, Also include: The cleaning mechanism (30) includes a support plate (31) and a gas pump (37) fixedly installed on the machining table (10), the inside of the support plate (31) is fixedly connected with the air cylinder (32) communicated with the support plate (31) exhaust port, the inside of the air cylinder (32) is installed with ion generator (33), the inside of the support plate (31) is fixedly connected with exhaust nozzle (34), the air flow control unit (35) is arranged between the exhaust nozzle (34) and the air cylinder (32), the air flow control unit (35) includes a tee pipe (351) fixed between the exhaust nozzle (34) and the air cylinder (32), the tee pipe (351) both branches are fixedly connected with air bag (352), the inside of the support plate (31) is slidably connected with the pressure block (353); When the gas pump (37) delivers air containing positive and negative ions to the saw blade (12), the pressure block (353) alternately extrudes the air inside the two air bags (352).

2. A pipe end forming machine according to claim 1, wherein The top of the support plate (31) is provided with a heat conduction unit (36), the heat conduction unit (36) includes a heat conduction block (361) fixedly connected to the top surface of the support plate (31) and in contact with the metal pipe, the bottom of the heat conduction block (361) is fixedly connected with a metal sheet (362) extending into the air cylinder (32).

3. A pipe end forming machine according to claim 1, wherein It also includes a transmission assembly (40) and a polishing mechanism (50), the polishing mechanism (50) includes a pair of sliding blocks (52) slidably connected inside the support plate (31), one side of the sliding block (52) is fixedly connected with a friction plate (51) fixed with the pressure block (353), a push block (53) is arranged between each pair of two sliding blocks (52).

4. A pipe end forming machine according to claim 3, wherein The transmission assembly (40) includes two gears (42) rotatably connected inside the support plate (31), one side of one of the gears (42) is fixedly connected with an impeller (41) rotatably connected inside the air cylinder (32), the other gear (42) and the push block (53) are fixedly connected with a rotating shaft (54).

5. A pipe end forming machine according to claim 1, wherein It also includes a flow guide mechanism (60), the flow guide mechanism (60) includes a connecting frame (61) slidably connected inside the exhaust nozzle (34), a plurality of equidistantly arranged flow guide plates (62) are movably connected inside the exhaust nozzle (34), each flow guide plate (62) is rotatably connected with the connecting frame (61).

6. A pipe end forming machine according to claim 5, wherein Both ends of the connecting frame (61) are fixedly connected with a wind shield (63) located at the air inlet of the exhaust nozzle (34), the connecting frame (61) and the inner wall of the exhaust nozzle (34) are fixedly connected with a folding cloth (64).

7. A pipe end forming machine according to claim 1, wherein Also include support mechanism (20), the support mechanism (20) includes the mounting rod (21) fixed on the machining table (10) by bolt, the inside of the mounting rod (21) is rotatably connected with threaded rod (22), the outside of the threaded rod (22) is threadedly connected with the sliding frame (23) slidingly connected in the inside of the mounting rod (21), the sliding frame (23) and the support plate (31) are both hinged with support rod (24) between the mounting rod (21) and the support plate (31).

8. A pipe end forming machine according to claim 7, wherein The support plate (31) is provided with two and is arranged symmetrically around the mounting rod (21), and the mounting rod (21) can be fixed on the machining table (10) by bolt at a height.

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