A pipe end processing machine

Abstract

The application 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 fixedly installed on the processing table, a saw blade rotationally connected to the motor, and a removing mechanism. The removing mechanism comprises a supporting plate and an air pump fixedly installed on the processing table. An air conveying cylinder in communication with an air outlet of the supporting plate is fixedly connected to the inside of the supporting plate. An ion generator is installed in the air conveying cylinder. An air outlet is fixedly connected to the inside of the supporting plate. The application utilizes the air pump and the ion generator to blow the airflow containing positive and negative ions to the cutting head of the saw blade, reduces the sawdust attached to the saw blade under the action of static electricity, makes the groove wall more smooth and flat after the metal pipe is cut and grooved, and further, the airflow control unit can control the airflow to be sprayed in the form of pulses, so that the ions are released to the saw blade at a high speed in a short time, the contact opportunity of the ions and the static electricity is increased, and the static electricity elimination efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of metal tube processing technology, and in particular to a tube end processing machine. Background Technology

[0002] Currently, in the metal pipe processing industry, grooving is generally performed on the pipe ends using stamping or cutting equipment. Stamping grooving is fast, produces high-quality grooving, and ensures a certain level of processing precision. However, this method is expensive, and the shape of the grooving is determined by the mold, making it difficult to flexibly adjust the grooving size. Cutting grooving equipment, on the other hand, is generally composed of a motor and a saw blade. The equipment has a simple structure and can flexibly control the grooving depth and width, making it suitable for small-batch, multi-variety production. Therefore, although cutting grooving is slower than stamping, it is still widely used in the field of metal pipe processing.

[0003] However, when traditional pipe end processing machines use saw blades to groove the sidewalls of metal pipe ends, the saw blades are subjected to high-speed friction from the metal pipes, which changes the surface charge distribution. As a result, sawdust is attracted to the saw blades under the action of static electricity. When the saw blades come into contact with the metal pipes, the sawdust particles rub against the cutting surface of the metal pipes, causing scratches on the cutting surface and reducing the cutting effect of the metal pipe ends. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that when a saw blade is used to groove the end wall of a metal pipe, the charge distribution on the surface of the metal pipe subjected to high-speed friction changes, causing sawdust to be attracted to the saw blade under the action of static electricity. When the saw blade comes into contact with the metal pipe, the sawdust particles will rub against the cutting surface of the metal pipe, causing scratches on the cutting surface. Therefore, a pipe end processing machine is proposed.

[0005] To achieve the above objectives, the present invention employs the following technology: a pipe end processing machine comprising a processing table, a motor fixedly mounted on the processing table, and a saw blade rotatably connected to the processing table and driven by the motor; and further comprising:

[0006] The cleaning mechanism includes a support plate and an air pump fixedly installed on the processing table. An air supply cylinder connected to the exhaust port of the support plate is fixedly connected inside the support plate. An ion generator is installed inside the air supply cylinder. An exhaust nozzle is fixedly connected inside the support plate. An airflow control unit is provided between the exhaust nozzle and the air supply cylinder. The airflow control unit includes a three-way pipe fixed between the exhaust nozzle and the air supply cylinder. Airbags are fixedly connected to both branches of the three-way pipe. A pressure block is slidably connected inside the support plate.

[0007] When the air pump delivers air containing positive and negative ions to the saw blade, the pressure block alternately squeezes out the air from inside the two air bladders.

[0008] As a further description of the above solution: a heat conduction unit is provided on the top of the support plate, the heat conduction unit includes a heat conduction block fixedly connected to the top surface of the support plate and in contact with the metal pipe, and a metal sheet extending into the gas cylinder is fixedly connected to the bottom of the heat conduction block.

[0009] As a further description of the above solution: it also includes a transmission assembly and a grinding mechanism, wherein the grinding mechanism includes a pair of sliders slidably connected inside the support plate, one side of each slider is fixedly connected to a friction plate fixed to a pressure block, and a push block is provided between each pair of sliders.

[0010] As a further description of the above solution: the transmission assembly includes two meshing gears rotatably connected inside the support plate, one of the gears having an impeller rotatably connected inside the air delivery cylinder fixed to one side, and the other gear having a rotating shaft fixedly connected to the push block.

[0011] As a further description of the above solution: it also includes a flow guiding mechanism, which includes a connecting frame slidably connected to the inside of the exhaust nozzle, and a plurality of equally spaced parallel flow guiding plates are movably connected inside the exhaust nozzle, each of the flow guiding plates being rotatably connected to the connecting frame.

[0012] As a further description of the above solution: both ends of the connecting frame are fixedly connected to a baffle plate located at the air inlet of the exhaust nozzle, and a folded cloth is fixedly connected between the connecting frame and the inner wall of the exhaust nozzle.

[0013] As a further description of the above solution: it also includes a support mechanism, which includes a mounting rod fixed to the processing table by bolts, a threaded rod rotatably connected inside the mounting rod, and a slide connected to the outside of the threaded rod by a sliding connection inside the mounting rod. Support rods are hinged between the slide and the support plate, and between the mounting rod and the support plate.

[0014] As a further description of the above solution: two support plates are provided and arranged symmetrically around the mounting rod, and the mounting rod can be fixed to the processing table at different heights by bolts.

[0015] In summary, due to the adoption of the above-mentioned technology in the pipe end processing machine, the beneficial effects of this invention are:

[0016] This application utilizes an air pump and an ion generator to blow airflow containing positive and negative ions to the cutting head of the saw blade. This neutralizes the static electricity on the cutting head when the saw blade rotates and cuts the metal pipe, reducing sawdust adhering to the saw blade under the influence of static electricity. This results in a smoother and flatter groove wall after the metal pipe is cut, thereby improving the cutting effect at the pipe end. Furthermore, the airflow control unit can control the airflow to be ejected in a pulsed form. Compared to a continuous airflow, this instantaneous and rapid airflow can more effectively blow away the sawdust adhering to the saw blade, achieving the effect of removing sawdust. At the same time, the pulsed airflow releases ions onto the saw blade at a high speed in a short period of time, allowing the ions to diffuse more quickly to the surface of the saw blade and sawdust, increasing the contact opportunity between the ions and the static charge, thereby more effectively carrying out the neutralization reaction and improving the static elimination efficiency.

[0017] The grinding mechanism can grind the inner wall of the metal tube during the cutting and grooving process, removing burrs and flash in real time, making the groove edge of the inner wall of the metal tube neat, improving the efficiency and effect of metal tube cutting. In addition, the airbag can play a buffering role during the operation of the grinding mechanism through its own elasticity, reducing the collision between the slider and the push block under the action of inertia, which helps to improve the service life of both and reduce noise.

[0018] By using a flow guiding mechanism to adjust the direction of airflow after each pulse of airflow, the pulse airflow containing positive and negative ions can more comprehensively cover the static charge at different locations on the saw blade, ensuring that the static electricity in each area can be effectively neutralized and avoiding local static electricity residue. It can also improve the effect of airflow in removing sawdust and prevent sawdust accumulation due to dead corners.

[0019] The heat conduction unit can transfer the heat generated at the cutting point when the metal pipe end is cut to the inside of the gas cylinder, heating the gas flow containing ions and accelerating the movement of ions, thereby achieving the neutralization of static electricity in a shorter time and improving the static elimination effect.

[0020] The height of the support plate can be adjusted to facilitate the cutting of metal pipes of different diameters. The two support plates can support the inner wall of the metal pipe, which not only facilitates the positioning of the metal pipe and prevents it from shifting during processing, but also supports the perimeter of the pipe cutting position to avoid bending and deformation of the metal pipe at the cutting position caused by the cutting stress generated by the saw blade, thereby further improving the cutting effect of the metal pipe end. Attached Figure Description

[0021] Figure 1 An overall schematic diagram provided according to an embodiment of the present invention is shown;

[0022] Figure 2 A schematic diagram of an air pump provided according to an embodiment of the present invention is shown;

[0023] Figure 3 A schematic cross-sectional view of the mounting rod provided according to an embodiment of the present invention is shown;

[0024] Figure 4 A schematic cross-sectional view of a gas delivery cylinder provided according to an embodiment of the present invention is shown;

[0025] Figure 5 The present invention provides an embodiment of the invention. Figure 4 Enlarged view of point A in the middle;

[0026] Figure 6 The present invention provides an embodiment of the invention. Figure 4 Enlarged view at point B in the middle;

[0027] Figure 7 A schematic cross-sectional view of an exhaust nozzle provided according to an embodiment of the present invention is shown;

[0028] Figure 8 A schematic diagram of the deflector state switching provided according to an embodiment of the present invention is shown.

[0029] Legend:

[0030] 10. Processing table; 11. Motor; 12. Saw blade;

[0031] 20. Support mechanism; 21. Mounting rod; 22. Threaded rod; 23. Slide carriage; 24. Support rod;

[0032] 30. Purification mechanism; 31. Support plate; 32. Air delivery cylinder; 33. Ion generator; 34. Exhaust nozzle; 35. Airflow control unit; 351. T-connector; 352. Airbag; 353. Pressure block; 36. Heat conduction unit; 361. Heat-conducting block; 362. Metal sheet; 37. Air pump;

[0033] 40. Transmission assembly; 41. Impeller; 42. Gear;

[0034] 50. Grinding mechanism; 51. Friction plate; 52. Slider; 53. Push block; 54. Rotating shaft;

[0035] 60. Flow guiding mechanism; 61. Connecting frame; 62. Flow guide plate; 63. Wind deflector; 64. Folded cloth. Detailed Implementation

[0036] The following will describe, with reference to the accompanying drawings of the embodiments of the present invention, a pipe end processing machine according to the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1-8 As shown, the present invention provides a pipe end processing machine, including a processing table 10, a motor 11 fixedly mounted on the processing table 10, and a saw blade 12 rotatably connected to the processing table 10 and driven by the motor 11. The motor 11 drives the circular saw blade 12 to rotate via belt drive to cut the end of the metal pipe. To prevent the metal pipe from shifting during processing, a limiting device for clamping the metal pipe is provided on the processing table 10. After the metal pipe passes through the limiting device, it can only be manually pushed to move axially. The cutting groove depth of the pipe end is adjusted by controlling the moving distance of the metal pipe. The machine also includes:

[0038] The cleaning mechanism 30 includes a support plate 31 and an air pump 37 fixedly mounted on the processing table 10. An air supply cylinder 32, connected to the exhaust port of the support plate 31 via a flexible hose, is fixedly connected inside the support plate 31. To prevent the hose from becoming tangled and obstructing processing, the hose is secured to the outside of the mounting rod 21 with a strapping strap. An ion generator 33 is installed inside the air supply cylinder 32. The ion generator 33 generates an electric field to ionize gas molecules in the air. Electrons in the gas molecules gain sufficient energy and escape from the molecules, forming free electrons and positive ions. When electrons escape, they collide with other neutral gas molecules, ionizing more gas molecules and generating a large number of positive and negative ions. When the saw blade 12 is positively charged, the negative ions are attracted and neutralized by the positive charge; conversely, when the surface of the saw blade 12 is negatively charged, the positive ions neutralize it, thus eliminating static electricity and preventing sawdust from adhering to the saw blade 12 under static electricity. An exhaust nozzle 34 is fixedly connected inside the support plate 31. The exhaust nozzle 34 is tilted downwards, allowing airflow to blow downwards from the exhaust nozzle 34, thus blowing the sawdust generated from cutting the metal pipe downwards. To prevent sawdust from flying, an airflow control unit 35 is installed between the exhaust nozzle 34 and the air supply cylinder 32. One end of the airflow control unit 35 is connected to the air supply cylinder 32, and the other two branches are connected to the two ends of the exhaust nozzle 34, respectively. The airflow control unit 35 includes a three-way pipe 351 fixed between the exhaust nozzle 34 and the air supply cylinder 32. Airbags 352 are fixedly connected to both branches of the three-way pipe 351. A pressure block 353 is slidably connected inside the support plate 31. When the air pump 37 delivers air containing positive and negative ions to the saw blade 12, the pressure block 353 reciprocates. The air inside the two air bladders 352 is squeezed out, causing the air inside the air bladders 352 to be accelerated and ejected from the exhaust nozzle 34. Therefore, the airflow can be ejected from the exhaust nozzle 34 in a pulse form, allowing the ions in the airflow to diffuse more quickly to the surface of the saw blade 12 and sawdust, improving the static electricity elimination efficiency. In addition, the airflow can more forcefully blow off the sawdust attached to the saw blade 12, achieving the effect of removing sawdust. The purpose of setting the three-way pipe 351 and the two air bladders 352 is to ensure that the airflow will not be completely interrupted during the pulsed airflow process, thereby improving the static electricity elimination efficiency.

[0039] Reference Figure 4 and Figure 5 Since the movement speed of ions increases under heating conditions, and the metal tube end needs to dissipate heat quickly during cutting, a heat conduction unit 36 ​​is provided on the top of the support plate 31. The heat conduction unit 36 ​​includes a heat-conducting block 361 fixedly connected to the top surface of the support plate 31 and in contact with the metal tube. A metal sheet 362 extending into the gas delivery cylinder 32 is fixedly connected to the bottom of the heat-conducting block 361. Through the heat-conducting block 361 and the metal sheet 362, the heat generated at the cutting part of the metal tube can be transferred to the inside of the gas delivery cylinder 32. This design not only accelerates the heat dissipation at the cutting position of the metal tube and avoids the metal tube from deforming under thermal stress, but also utilizes this part of the heat, increases the movement speed of ions, and helps to accelerate the elimination of static electricity.

[0040] Reference Figure 4 , Figure 5 and Figure 6 To remove burrs generated on the inner wall of the groove after slotting the metal tube, a transmission assembly 40 and a grinding mechanism 50 are also included. The grinding mechanism 50 includes a pair of sliders 52 slidably connected inside the support plate 31. A friction plate 51 fixed to the pressure block 353 is fixedly connected to one side of each slider 52. A pusher 53 is provided between each pair of sliders 52. When the pusher 53 rotates, it alternately pushes the two sliders 52 in opposite directions, causing the two sliders 52 and the friction plate 51 to reciprocate. The top of the friction plate 51 is in contact with the edge of the metal tube cutting position and has file teeth. When the friction plate 51 reciprocates, it removes the burrs generated during slotting of the metal tube through friction, improving the cutting effect and efficiency of the metal tube end. When the pusher 53 pushes one of the sliders 52 to move the friction plate 51 in one direction, the airbag 352 buffers the pressure block 353 and the friction plate 51 with its own elasticity, reducing the impact of inertia when the friction plate 51 stops moving. The next slider 52 impacts the push block 53. The transmission assembly 40 includes two meshing gears 42 rotatably connected inside the support plate 31. One side of one gear 42 is fixed with an impeller 41 rotatably connected inside the air delivery cylinder 32. The other gear 42 is fixedly connected to the push block 53 with a rotating shaft 54. The impeller 41 rotates with the thrust of the airflow, and the push block 53 rotates under the transmission of the gear 42 and the rotating shaft 54. The purpose of this design is to make burr removal and static electricity elimination occur simultaneously when cutting metal pipes, to avoid sawdust generated by friction removal from adhering to the saw blade 12 under the action of static electricity, and to simplify the operation complexity of the device. At the same time, the impeller 41 arranged inside the air delivery cylinder 32 can also make the ions generated by the ion generator 33 evenly dispersed, so that the ions can exert the best efficiency. The air delivery cylinder 32, the three-way pipe 351 and the exhaust nozzle 34 all have insulation properties to prevent ions from being lost during the transportation process.

[0041] Reference Figure 7 and Figure 8 To ensure that the pulsed airflow containing positive and negative ions more comprehensively covers the static charge at different locations on the saw blade 12, effectively neutralizing static electricity in each area and improving the sawdust removal effect through airflow, a flow guiding mechanism 60 is also included. The flow guiding mechanism 60 includes a connecting frame 61 slidably connected inside the exhaust nozzle 34. Several equally spaced parallel guide plates 62 are movably connected inside the exhaust nozzle 34. Each guide plate 62 is rotatably connected to the connecting frame 61. Both ends of the connecting frame 61 are fixedly connected to baffle plates 63 located at the air inlet of the exhaust nozzle 34. When one of the airbags 352 is squeezed by the pressure block 353, the air inside the airbag 352 is accelerated into the exhaust nozzle 34 through one branch of the three-way pipe 351. At this time, the other... During the deformation recovery process of the airbag 352, the airflow into the exhaust nozzle 34 from the other branch of the three-way pipe 351 decreases. Therefore, the airflow thrust at the air inlets at both ends of the exhaust nozzle 34 will be different. Under this difference, the baffle plate 63 and the connecting frame 61 will move towards one side of the exhaust nozzle 34, causing the guide plate 62 to tilt. The two airbags 352 are alternately squeezed, causing the tilt direction of the guide plate 62 to change continuously, thereby changing the airflow discharge angle, improving the coverage of the airflow, and enhancing the static electricity removal and sawdust removal effects. A folded cloth 64 is fixedly connected between the connecting frame 61 and the inner wall of the exhaust nozzle 34 to prevent the airflow entering the exhaust nozzle 34 from leaking out from the gap between the end of the connecting frame 61 and the inner wall of the exhaust nozzle 34, thereby improving the airflow direction adjustment effect.

[0042] Reference Figure 2 and Figure 3 To ensure the flexibility of this device, a support mechanism 20 is also included. The support mechanism 20 includes a mounting rod 21 fixed to the processing table 10 by bolts. The mounting rod 21 can be adjusted in height on the processing table 10 by bolts, allowing the support plate 31 to fit against the inner wall of various types of metal pipes, thus improving the applicability of the device. A threaded rod 22 is rotatably connected inside the mounting rod 21, and a slide 23 is slidably connected to the outside of the threaded rod 22 inside the mounting rod 21. The slide 23 and the support plate 31, as well as the mounting rod 21 and the support plate 31, are hinged. The support rod 24 and the rotating threaded rod 22 can drive the slide 23 to slide inside the mounting rod 21. The support rod 24 expands the support plate 31 outward. There are two support plates 31, which are symmetrically arranged around the mounting rod 21. When the two support plates 31 expand synchronously until they support the inner wall of the metal tube, they can position the metal tube and prevent the metal tube from shifting during cutting. The middle of the support plate 31 is provided with a groove for the saw blade 12 to pass through. The top of the support plate 31 can support the two sides of the grooved position of the metal tube to avoid bending and deformation at the cutting position of the metal tube.

[0043] Working principle: Manually rotating the threaded rod 22 causes the slide 23 to slide inside the mounting rod 21. The slide 23 moves and expands the support plate 31 outward through the support rod 24, so that the distance between the outer sides of the two support plates 31 is equal to the diameter of the metal tube to be processed. Then, the height of the mounting rod 21 fixed on the processing table 10 is adjusted by bolts so that the axis of the mounting rod 21 coincides with the axis of the metal tube, thus completing the preparation before cutting the end of the metal tube.

[0044] The motor 11 is started to drive the saw blade 12 to rotate. Then, the metal tube is manually pushed so that it fits over the two support plates 31. The metal tube is pushed until the end of the metal tube contacts the saw blade 12 for cutting. The air pump 37 is started to deliver outside air to the air cylinder 32 through a hose. At this time, the ion generator 33 is powered on to generate positive and negative ions that are incorporated into the airflow. The airflow with ions passes through the air cylinder 32 and is sprayed out through the three-way pipe 351, the air bag 352 and the exhaust nozzle 34 to the cutting head of the saw blade 12. This neutralizes the static electricity on the cutting head of the saw blade 12, reduces the adhesion of sawdust, and improves the quality of the metal tube cutting surface.

[0045] When the airflow flows, it drives the impeller 41 to rotate. The rotation of the impeller 41 drives the rotating shaft 54 ​​and the push block 53 to rotate through the two gears 42. The push block 53 pushes the two sliders 52 in opposite directions to drive the friction plate 51 to move back and forth. The reciprocating movement of the friction plate 51 polishes the two sides of the metal tube cutting position to achieve the deburring effect.

[0046] As the pressure block 353 moves back and forth with the friction plate 51, it alternately squeezes the two airbags 352, causing the air inside the airbags 352 to be ejected from the exhaust nozzle 34 in a pulsed manner, thereby improving the efficiency of static electricity elimination and the effect of removing sawdust. When one of the airbags 352 is squeezed by the pressure block 353, the air inside the airbag 352 will accelerate into the exhaust nozzle 34 through one of the branches of the three-way pipe 351. At this time, the other airbag 352 is in the process of deformation recovery, and 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 inlets at both ends of the exhaust nozzle 34 will be different. Under this difference, the baffle plate 63 and the connecting frame 61 will move towards one side of the exhaust nozzle 34, causing the guide plate 62 to tilt. The two airbags 352 are squeezed alternately, causing the tilt direction of the guide plate 62 to change continuously, thereby realizing the change of the airflow discharge angle, improving the coverage of the airflow, and enhancing the static electricity elimination and sawdust removal effects.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the present invention's technology and inventive concept, should be covered within the scope of protection of the present invention.

Claims

1. A pipe end processing machine, comprising a processing table (10), wherein a motor (11) is fixedly mounted on the processing table (10), and a saw blade (12) rotatably connected to the processing table (10) and driven by the motor (11), characterized in that, Also includes: The cleaning mechanism (30) includes a support plate (31) and an air pump (37) fixedly installed on the processing table (10). The support plate (31) is fixedly connected to an air supply cylinder (32) that communicates with the exhaust port of the support plate (31). An ion generator (33) is installed inside the air supply cylinder (32). An exhaust nozzle (34) is fixedly connected inside the support plate (31). An airflow control unit (35) is provided between the exhaust nozzle (34) and the air supply cylinder (32). The airflow control unit (35) includes a three-way pipe (351) fixed between the exhaust nozzle (34) and the air supply cylinder (32). An airbag (352) is fixedly connected to each of the two branches of the three-way pipe (351). A pressure block (353) is slidably connected inside the support plate (31). When the air pump (37) delivers air containing positive and negative ions to the saw blade (12), the pressure block (353) alternately squeezes out the air inside the two air bags (352); It also includes a flow guiding mechanism (60), which includes a connecting frame (61) slidably connected inside the exhaust nozzle (34). The exhaust nozzle (34) is movably connected with a number of equally spaced parallel flow guiding plates (62). Each flow guiding plate (62) is rotatably connected to the connecting frame (61). Both ends of the connecting frame (61) are fixedly connected to a baffle plate (63) located at the air inlet of the exhaust nozzle (34). A folded cloth (64) is fixedly connected between the connecting frame (61) and the inner wall of the exhaust nozzle (34).

2. The pipe end processing machine according to claim 1, characterized in that, 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 tube, and a metal sheet (362) extending into the gas cylinder (32) is fixedly connected to the bottom of the heat conduction block (361).

3. The pipe end processing machine according to claim 1, characterized in that, It also includes a transmission assembly (40) and a grinding mechanism (50), the grinding mechanism (50) including a pair of sliders (52) slidably connected inside the support plate (31), one side of the slider (52) being fixedly connected to a friction plate (51) fixed to the pressure block (353), and a push block (53) being provided between each pair of two sliders (52).

4. A pipe end processing machine according to claim 3, characterized in that, The transmission assembly (40) includes two meshing gears (42) rotatably connected inside the support plate (31). One of the gears (42) has an impeller (41) rotatably connected inside the air delivery cylinder (32) fixed on one side. The other gear (42) has a rotating shaft (54) fixedly connected to the push block (53).

5. A pipe end processing machine according to claim 1, characterized in that, It also includes a support mechanism (20), which includes a mounting rod (21) fixed to the processing table (10) by bolts. The mounting rod (21) is internally rotatably connected to a threaded rod (22). The threaded rod (22) is externally threaded to a slide (23) slidably connected to the inside of the mounting rod (21). Support rods (24) are hinged between the slide (23) and the support plate (31) and between the mounting rod (21) and the support plate (31).

6. A pipe end processing machine according to claim 5, characterized in that, Two support plates (31) are provided and are symmetrically arranged around the mounting rod (21). The mounting rod (21) can be fixed to the processing table (10) at different heights by bolts.

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