Laser cutter for numerical control machine tool machining

Abstract

The invention relates to the technical field of laser cutting, and particularly discloses a laser cutter for numerical control machine tool machining, which comprises a cylinder body, a fixed pipe is arranged in the cylinder body, an auxiliary air flow channel is arranged between the fixed pipe and the inner wall of the cylinder body, a main air flow channel is arranged in the fixed pipe, and a rotating pipe is arranged in the main air flow channel. And an air inlet is formed in the upper portion of the fixed pipe, the air inlet channel communicates with the main air flow channel and the auxiliary air flow channel through the air inlet, and air outlets are formed in the bottom end of the main air flow channel and the bottom end of the auxiliary air flow channel. The flow ratio of air flow entering the main air flow channel and the auxiliary air flow channel is adjusted through the adjusting assembly, and meanwhile the aperture ratio of the air outlets of the main air flow channel and the auxiliary air flow channel is adjusted through the control assembly; it is ensured that the airflow flow and the airflow speed in the auxiliary airflow channel can generate enough constraint on the airflow in the main airflow channel and do not excessively interfere with the airflow in the main airflow channel, and the machining precision and the machining quality of the to-be-machined workpiece are further improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, in particular to a laser cutter for numerically controlled machine tool processing. Background Art

[0002] Laser cutting is a processing technology that uses a high-energy-density laser beam to irradiate materials to melt, vaporize or burn the materials, and releases auxiliary gases (such as nitrogen, oxygen, etc.) through a nozzle to blow away the molten material or combustion products, thereby achieving material cutting. The existing laser processing nozzles tend to increase the inclination angle when cutting thicker workpieces, and the thicker the workpiece, the more significant this tendency is.

[0003] For example, Chinese patent number CN118492615B discloses a laser cutting head, a laser cutting machine and a laser cutting method, including a barrel, a connector, a head end and a driving unit, an inner flow channel and an outer flow channel are formed in the wall of the head end, a countersunk hole portion and a through hole portion formed on the connector form an axial channel with the inner flow channel, and a slotted hole structure is formed at the lower part of the barrel to match the channel structure provided in the connector, and can establish a connection relationship with the outer flow channel. Auxiliary gas can be ejected from the inner flow channel and the outer flow channel onto the workpiece, and the barrel can be driven to move relative to the connector by the driving unit to control the flow ratio of the auxiliary gas ejected from the outer flow channel to the auxiliary gas ejected from the inner flow channel, so that regardless of the thickness of the workpiece, good cutting processing can be performed stably and efficiently, so that the inclination angle formed by the cutting surface is effectively suppressed.

[0004] However, when the auxiliary gas is adjusted by the above method, only the air flow rate can be changed but the air flow velocity cannot be precisely controlled accordingly. When the air flow rate ratio between the inner channel and the outer channel changes, since the pipe diameter is not adaptively adjusted synchronously, the air flow velocity may be too high or too low. If the air flow velocity in the inner channel is too high, the incision may become wider and uneven, while if the air flow velocity in the outer channel is too low, it cannot effectively constrain the gas in the inner channel, resulting in a decrease in the processing quality of the workpiece. Summary of the invention

[0005] The object of the present invention is to provide a laser cutter for CNC machine tool processing to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: A laser cutter for CNC machine tool processing, comprising a barrel, a fixed tube is arranged in the barrel, an auxiliary airflow channel is arranged between the fixed tube and the inner wall of the barrel, a main airflow channel is arranged in the fixed tube, a rotating tube is arranged in the main airflow channel, and the rotating tube can allow a laser beam to pass through, an air inlet channel is arranged above the fixed tube, the air inlet channel is communicated with the main airflow channel and the auxiliary airflow channel respectively through an air inlet, and the bottom ends of the main airflow channel and the auxiliary airflow channel are arranged as air outlets;

[0007] Also included is a regulating component, the regulating component is used to adjust the flow rate ratio of airflow entering the main airflow channel and the auxiliary airflow channel;

[0008] It also includes a control component, which is used to adjust the aperture ratio at the air outlets of the main air channel and the auxiliary air channel, and the aperture ratio is adjusted in direct proportion to the air flow ratio.

[0009] Preferably, the bottom end of the fixed tube is rotatably connected to a plurality of rotating blocks distributed in a ring shape, a corrugated strip is provided between every two adjacent rotating blocks, and the plurality of rotating blocks and the plurality of corrugated strips together constitute an air outlet of the main air flow channel.

[0010] Preferably, the control assembly comprises a rotating ring rotatably mounted on the outer wall of the rotating tube and capable of sliding up and down along the rotating tube for adjustment, and a connecting rod is rotatably mounted between the rotating ring and each rotating block.

[0011] Preferably, an outer wall of the rotating tube is provided with an inclined slide groove, and an inner wall of the rotating ring is provided with a limit pin that can slide in the slide groove, and the rotating tube is driven by an external driving structure to rotate and adjust along the axial direction.

[0012] Preferably, the adjustment assembly includes a rotating disk fixedly mounted on the outer wall of a rotating tube by a plurality of fixing rods, a plurality of arc grooves are provided in the rotating disk, a plurality of sliding blocks corresponding to the arc grooves are slidably mounted on the top surface of the fixed tube, and a limit block is provided on the top surface of each sliding block that can slide in the arc groove.

[0013] Preferably, the adjustment component includes annular grooves opened on the inner wall and outer wall of the fixed tube, an inner air bag is provided in the annular groove on the inner wall of the fixed tube, and an outer air bag is provided in the annular groove on the outer wall of the fixed tube, the outer air bag is connected to the external air supply equipment through a first connecting tube, and the inner air bag is connected to the external air supply equipment through a second connecting tube, and a detection component for detecting the rotation direction of the rotating tube is also provided in the cylinder, and the detection component is electrically connected to the external air supply equipment.

[0014] Preferably, a plurality of groups of connection blocks distributed in a stepped manner are fixedly connected between the outer wall of the fixed tube and the cylinder.

[0015] Preferably, the inner diameter of the top end of the fixed tube is smaller than the inner diameter of the bottom end.

[0016] Preferably, a corrugated tube is provided between the outer wall of the bottom end of the fixed tube and the outer wall of the top end of the rotating block.

[0017] Preferably, the inner diameter of the air outlet of the main air flow channel is equal to the inner diameter of the bottom end of the fixed pipe when the inner diameter is at its largest.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention adjusts the air flow rate ratio of the main air channel and the auxiliary air channel by adjusting the adjustment component and adjusts the aperture ratio at the air outlet of the main air channel and the auxiliary air channel by controlling the control component. It can control the gas flow rate in the main air channel while ensuring that the air flow rate and air flow speed in the auxiliary air channel can exert sufficient constraints on the air flow in the main air channel and do not excessively interfere with the air flow in the main air channel, thereby further improving the laser processing accuracy and processing quality of the workpiece to be processed.

[0020] 2. The present invention can adjust the aperture ratio at the air outlet of the main air channel and the auxiliary air channel by driving the rotating body to slide up and down along the outer wall of the rotating tube, and the simultaneous adjustment of the two can minimize the impact of changes in air flow velocity and air flow rate on the auxiliary air flow, thereby avoiding the auxiliary air flow being too fast or too slow to affect the processing quality and processing accuracy of the workpiece to be processed.

[0021] 3. The present invention drives the rotating tube to rotate through an external driving structure, driving the rotating ring to slide upward and downward, and the distance the rotating ring slides up and down can be limited by limiting the curvature and length of the slide groove, thereby avoiding the main air flow channel having an excessively small air outlet, which leads to an excessively high air flow velocity, and limiting the auxiliary air flow channel having an excessively large air outlet and an excessively high air flow velocity, which causes excessive impact on the auxiliary air flow in the main air flow channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a partial cross-sectional view of the first embodiment of the present invention;

[0024] Figure 3 It is a partial three-dimensional structural cross-sectional view of the first embodiment of the present invention;

[0025] Figure 4 A bottom view of the present invention;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention;

[0027] Figure 6 It is a partial cross-sectional view of the second embodiment of the present invention;

[0028] Figure 7 It is a partial three-dimensional structural cross-sectional view of the second embodiment of the present invention;

[0029] Figure 8 A simple visual method for adjusting the air outlet in the present invention Figure 1 ;

[0030] Fig. 9 A simple visual method for adjusting the air outlet in the present invention Figure 2 .

[0031] In the figure: 1. cylinder; 2. rotating tube; 3. fixed tube; 4. connecting block; 5. rotating block; 6. corrugated strip; 7. bellows; 8. connecting rod; 9. rotating ring; 10. outer air bag; 11. inner air bag; 12. first connecting tube; 13. second connecting tube; 14. sliding block; 15. rotating disk; 16. arc groove; 17. slide groove; 18. main air flow channel; 19. auxiliary air flow channel; 20. air intake channel. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 9 The present invention provides a technical solution: a laser cutter for CNC machine tool processing, comprising a barrel 1, characterized in that: a fixed tube 3 is arranged inside the barrel 1, an auxiliary airflow channel 19 is arranged between the fixed tube 3 and the inner wall of the barrel 1, a main airflow channel 18 is arranged inside the fixed tube 3, a rotating tube 2 is arranged inside the main airflow channel 18, and the rotating tube 2 can allow the laser beam to pass through, an air inlet channel 20 is arranged above the fixed tube 3, the air inlet channel 20 is connected with the main airflow channel 18 and the auxiliary airflow channel 19 through an air inlet, and the bottom ends of the main airflow channel 18 and the auxiliary airflow channel 19 are arranged as air outlets;

[0034] It also includes a regulating component, which is used to adjust the flow rate ratio of the airflow entering the main airflow channel 18 and the auxiliary airflow channel 19;

[0035] It also includes a control component, which is used to adjust the aperture ratio at the air outlets of the main air channel 18 and the auxiliary air channel 19, and the aperture ratio is adjusted in direct proportion to the air flow ratio.

[0036] When the device is in use, the laser is first generated by a laser emitter, and the laser is focused with a convex lens, so that the focused laser passes through the rotating tube 2 to process the workpiece to be processed below. At this time, the external gas supply equipment provides auxiliary gas to the air inlets of the main air channel 18 and the auxiliary air channel 19 through the air inlet channel 20. The auxiliary gas flowing out of the auxiliary air channel 19 constrains the auxiliary gas flowing out of the main air channel 18, so that the auxiliary gas flowing out of the main air channel 18 maintains a certain radial trend to prevent the auxiliary gas from diffusing outward. While blowing away the molten material generated in the cutting process, it prevents the incision at the bottom of the workpiece from being unable to be protected by the auxiliary gas, resulting in an increase in the incision inclination angle.

[0037] When the workpiece to be processed has an inclination angle, the adjustment component begins to adjust the air flow rate ratio of the main air channel 18 and the auxiliary air channel 19, that is, to increase the air flow rate in the auxiliary air channel 19 and reduce the air flow rate in the main air channel 18, so that the air flow in the auxiliary air channel 19 strengthens the constraint of the air flow in the main air channel 18, and improves the radial drive of the air flow in the main air channel 18 to enhance the protective effect of the auxiliary air flow on the bottom of the workpiece. At this time, the control component also cooperates to reduce the outlet of the main air channel 18 to avoid the reduction of the flow rate causing the gas flow rate in the main air channel 18 to decrease, and at the same time increase the outlet diameter of the auxiliary air channel 19 to avoid the gas flow rate in the auxiliary air channel 19 being too fast, which causes the radial tendency of the air flow in the main air channel 18 to generate vortices, so that the auxiliary air flow loses its ability to protect the workpiece to be processed. When defects appear on the surface of the workpiece to be processed, the regulating component controls to increase the air flow rate in the main air channel 18 while reducing the air flow rate in the auxiliary air channel 19, thereby increasing the flow rate of the auxiliary air flow to ensure the protective effect of the auxiliary air flow on the bottom of the workpiece, and the control component simultaneously increases the air outlet of the main air channel 18 to prevent the air flow rate in the main air channel 18 from being too fast, causing the incision to become wider and uneven, and reducing the air outlet of the auxiliary air channel 19 can ensure that the air flow rate in the auxiliary air channel 19 can play a centripetal constraint role on the air flow in the main air channel 18.

[0038] In this way, by adjusting the air flow ratio entering the main air channel 18 and the auxiliary air channel 19 through the adjusting component and adjusting the aperture ratio at the air outlet of the main air channel 18 and the auxiliary air channel 19 through the control component, it is possible to control the gas flow rate in the main air channel 18 while ensuring that the air flow rate and air flow speed in the auxiliary air channel 19 can exert sufficient constraints on the air flow in the main air channel 18 without excessively interfering with the air flow in the main air channel 18, thereby further improving the laser processing accuracy and processing quality of the workpiece to be processed.

[0039] Furthermore, a plurality of rotating blocks 5 distributed in a ring shape are rotatably connected to the bottom end of the fixed tube 3 , a corrugated strip 6 is provided between every two adjacent rotating blocks 5 , and the plurality of rotating blocks 5 and the plurality of corrugated strips 6 together constitute an air outlet of the main air flow channel 18 .

[0040] According to the above embodiment, a specific embodiment of the air outlet is provided. Figure 2 and Figure 3 Since the outer wall of the main air channel 18 and the inner wall of the auxiliary air channel 19 are composed of a plurality of rotating blocks 5 and a plurality of corrugated strips 6, when the plurality of rotating blocks 5 rotate inward and contract, the caliber of the air outlet of the auxiliary air channel 19 can be increased while the caliber of the air outlet of the main air channel 18 is reduced; and when the plurality of rotating blocks 5 rotate inward and outward and expand, the caliber of the air outlet of the main air channel 18 can be increased while the caliber of the air outlet of the auxiliary air channel 19 is reduced, which provides a feasible basis for the control component in the above text to adjust the aperture ratio at the air outlet of the main air channel 18 and the auxiliary air channel 19.

[0041] Furthermore, the control assembly includes a rotating ring 9 which is rotatably mounted on the outer wall of the rotating tube 2 and can be slidably adjusted up and down along the rotating tube 2 , and a connecting rod 8 is rotatably mounted between the rotating ring 9 and each rotating block 5 .

[0042] According to the above embodiment, a specific embodiment of a control component is provided. Figure 2 and Figure 3 When the rotating ring 9 moves upward under the action of the external structure, it pulls the connecting rod 8 to move upward together. Since the connecting rod 8 cannot expand and contract radially, it will pull the rotating block 5 to rotate in the direction of the rotating tube 2, and at the same time squeeze the corrugated strips 6 to reduce the diameter of the air outlet of the main air channel 18 and increase the diameter of the air outlet of the auxiliary air channel 19. Conversely, the rotating ring 9 is driven to slide upward, which can reduce the diameter of the air outlet of the auxiliary air channel 19 and increase the diameter of the air outlet of the main air channel 18.

[0043] In this way, by driving the rotating ring 9 to slide up and down along the outer wall of the rotating tube 2, the aperture ratio at the outlet of the main air channel 18 and the auxiliary air channel 19 can be adjusted, and the simultaneous adjustment of the two can minimize the impact of changes in air flow velocity and air flow rate on the auxiliary air flow, thereby avoiding the auxiliary air flow being too fast or too slow to affect the processing quality and processing accuracy of the workpiece to be processed.

[0044] Furthermore, an inclined slide groove 17 is provided on the outer wall of the rotating tube 2, and a limit pin capable of sliding in the slide groove 17 is provided on the inner wall of the rotating ring 9. The rotating tube 2 is driven by an external driving structure to rotate and adjust along the axial direction.

[0045] According to the above embodiment, when the external driving structure drives the rotating tube 2 to rotate, Figure 3If the rotating tube 2 rotates clockwise, it drives the rotating ring 9 to slide upward. If the rotating tube 2 rotates counterclockwise, it drives the rotating ring 9 to slide downward, thereby achieving the purpose of driving the rotating ring 9 to slide up and down along the outer wall of the rotating tube 2. By limiting the curvature and length of the slide groove 17, the distance that the rotating ring 9 slides up and down can be limited, thereby avoiding the main airflow channel 18 from having an excessively small air outlet, resulting in an excessively high airflow velocity, and limiting the auxiliary airflow channel 19 from having an excessively large air outlet and an excessively high airflow velocity, which has an excessive impact on the auxiliary airflow in the main airflow channel 18.

[0046] Embodiment 1:

[0047] Furthermore, the adjustment component includes a rotating disk 15 fixedly mounted on the outer wall of the rotating tube 2 by a plurality of fixing rods, a plurality of arc grooves 16 are provided in the rotating disk 15, a plurality of sliding blocks 14 corresponding to the arc grooves 16 are slidably mounted on the top surface of the fixed tube 3, and a limit block capable of sliding in the arc groove 16 is provided on the top surface of each sliding block 14.

[0048] According to the above embodiment, a specific embodiment of an adjustment component is provided. Figure 2 and Figure 3 When the rotating tube 2 rotates under the action of the external driving structure, the rotating disk 15 is driven to rotate together, so that the sliding blocks 14 are close to each other along the top surface of the fixed tube 3 under the limit of the limit block, reducing the diameter of the air inlet of the main air channel 18. When the external air supply equipment keeps the air pressure unchanged, the auxiliary gas flowing into the main air channel 18 is reduced and the auxiliary gas flowing into the auxiliary air channel 19 is increased, thereby completing the adjustment of the air flow ratio entering the main air channel 18 and the auxiliary air channel 19. The control component can also synchronously adjust the diameters of the air outlets of the main air channel 18 and the auxiliary air channel 19 to ensure that the flow in the auxiliary air channel 19 increases and the flow in the air channel 18 decreases while the air flow velocity remains unchanged. Otherwise, the rotating tube 2 is driven to rotate in the opposite direction.

[0049] Embodiment 2:

[0050] Furthermore, the adjustment component includes annular grooves opened on the inner wall and outer wall of the fixed tube 3, an inner air bag 11 is provided in the annular groove on the inner wall of the fixed tube 3, and an outer air bag 10 is provided in the annular groove on the outer wall of the fixed tube 3, the outer air bag 10 is connected to the external air supply equipment through the first connecting tube 12, and the inner air bag 11 is connected to the external air supply equipment through the second connecting tube 13. A detection component for detecting the rotation direction of the rotating tube 2 is also provided in the cylinder 1, and the detection component is electrically connected to the external air supply equipment.

[0051] According to the above embodiment, a specific embodiment of the second adjustment component is provided. Figure 6 and Figure 7When the detection component detects that the rotating tube 2 rotates counterclockwise under the action of the external driving structure, the external air supply device fills gas into the inner airbag 11 through the second connecting tube 13 and extracts the gas in the outer airbag 10 through the first connecting tube 12, so that the inner airbag 11 expands inward to reduce the diameter of the air inlet of the main air channel 18, while the outer airbag 10 contracts to increase the diameter of the air inlet of the auxiliary air channel 19. Conversely, gas is filled into the outer airbag 10 and the gas in the inner airbag 11 is extracted, so as to complete the adjustment of the diameter ratio of the air inlets of the main air channel 18 and the auxiliary air channel 19.

[0052] Compared with the first embodiment, the present embodiment adds the adjustment of the aperture of the air inlet of the auxiliary air channel 19, so that the positive proportional relationship between the air flow rate ratio entering the main air channel 18 and the auxiliary air channel 19 and the aperture ratio at the air outlet of the main air channel 18 and the auxiliary air channel 19 is more linear, further improving the control accuracy of the air flow rate and air velocity, thereby reducing the errors that may occur when processing workpieces of different thicknesses.

[0053] Furthermore, a plurality of groups of connection blocks 4 distributed in a stepped manner are fixedly connected between the outer wall of the fixed pipe 3 and the cylinder body 1 .

[0054] According to the above embodiment, since there are multiple groups of connection blocks 4 distributed in a step-like manner fixedly connected between the outer wall of the fixed tube 3 and the cylinder 1, the airflow in the auxiliary airflow channel 19 can flow out in a spiral shape, forming a vortex constraint at the air outlet of the main airflow channel 18, and the centripetal force of the vortex airflow is used to enhance the constraint force on the airflow in the main airflow channel 18.

[0055] Furthermore, the inner diameter of the top end of the fixing pipe 3 is smaller than that of the bottom end.

[0056] According to the above-mentioned embodiment, by setting the inner diameter of the top end of the fixed tube 3 to be smaller than the inner diameter of the bottom end, the gas in the air inlet channel 20 first contracts and then expands when entering the fixed tube 3, and the Venturi effect is utilized to increase the flow velocity of the gas when flowing through the reduced diameter channel, thereby improving the stability of the airflow in the main airflow channel 18 and avoiding damage to the processed parts due to insufficient air pressure or interrupted airflow caused by the air supply equipment.

[0057] Furthermore, a bellows 7 is provided between the outer wall of the bottom end of the fixed tube 3 and the outer wall of the top end of the rotating block 5 .

[0058] According to the above embodiment, by providing a bellows 7 between the bottom outer wall of the fixed tube 3 and the top outer wall of the rotating block 5, the rotating block 5 is prevented from rotating so that the main air channel 18 and the auxiliary air channel 19 are connected and interfere with each other under the influence of different air pressures.

[0059] Furthermore, when the inner diameter of the air outlet of the main air flow channel is at its maximum, it is equal to the inner diameter of the bottom end of the fixed pipe 3 .

[0060] According to the above embodiment, by setting the maximum inner diameter of the air outlet to be equal to the inner diameter of the bottom end of the fixed tube 3, it is possible to avoid excessive expansion of the air outlet of the main air channel 18, which causes the air flow in the auxiliary air channel 19 to have a reduced restraining effect on the air flow in the main air channel 18. At the same time, it is possible to avoid an imbalance in the air pressure in the main air channel 18, which causes the air flow velocity to be too low.

[0061] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser cutter for CNC machine tool processing, comprising a barrel (1), characterized in that: A fixed tube (3) is provided in the cylinder (1), an auxiliary airflow channel (19) is provided between the fixed tube (3) and the inner wall of the cylinder (1), a main airflow channel (18) is provided in the fixed tube (3), a rotating tube (2) is provided in the main airflow channel (18), and the rotating tube (2) can allow a laser beam to pass through, an air inlet channel (20) is provided above the fixed tube (3), the air inlet channel (20) is communicated with the main airflow channel (18) and the auxiliary airflow channel (19) respectively through an air inlet, and the bottom ends of the main airflow channel (18) and the auxiliary airflow channel (19) are provided with air outlets; It also includes an adjustment component, the adjustment component is used to adjust the flow rate ratio of the airflow entering the main airflow channel (18) and the auxiliary airflow channel (19); It also includes a control component, which is used to adjust the aperture ratio at the air outlets of the main air channel (18) and the auxiliary air channel (19), and the aperture ratio is adjusted in direct proportion to the air flow ratio.

2. The laser cutter for CNC machine tool processing according to claim 1, characterized in that: The bottom end of the fixed tube (3) is rotatably connected to a plurality of rotating blocks (5) distributed in an annular shape, a corrugated strip (6) is provided between every two adjacent rotating blocks (5), and the plurality of rotating blocks (5) and the plurality of corrugated strips (6) together form an air outlet of the main air flow channel (18).

3. The laser cutter for CNC machine tool processing according to claim 2, characterized in that: The control assembly comprises a rotating ring (9) which is rotatably mounted on the outer wall of the rotating tube (2) and can be slidably adjusted up and down along the rotating tube (2). A connecting rod (8) is rotatably mounted between the rotating ring (9) and each rotating block (5).

4. The laser cutter for CNC machine tool processing according to claim 3, characterized in that: The outer wall of the rotating tube (2) is provided with an inclined sliding groove (17), and the inner wall of the rotating ring (9) is provided with a limit pin capable of sliding in the sliding groove (17). The rotating tube (2) is driven by an external driving structure to rotate and adjust along the axial direction.

5. The laser cutter for CNC machine tool processing according to claim 4, characterized in that: The adjustment assembly comprises a rotating disk (15) fixedly mounted on the outer wall of a rotating tube (2) via a plurality of fixing rods, a plurality of arc-shaped grooves (16) being arranged in the rotating disk (15), a plurality of sliding blocks (14) corresponding to the arc-shaped grooves (16) being slidably mounted on the top surface of the fixed tube (3), and a limit block capable of sliding in the arc-shaped groove (16) being arranged on the top surface of each sliding block (14).

6. The laser cutter for CNC machine tool processing according to claim 4, characterized in that: The adjustment component comprises annular grooves formed on the inner wall and the outer wall of the fixed tube (3); an inner air bag (11) is arranged in the annular groove on the inner wall of the fixed tube (3); and an outer air bag (10) is arranged in the annular groove on the outer wall of the fixed tube (3); the outer air bag (10) is connected to an external air supply device via a first connecting tube (12); and the inner air bag (11) is connected to an external air supply device via a second connecting tube (13); a detection component for detecting the rotation direction of the rotating tube (2) is also arranged in the cylinder (1), and the detection component is electrically connected to the external air supply device.

7. The laser cutter for CNC machine tool processing according to any one of claims 1 to 6, characterized in that: A plurality of groups of connection blocks (4) distributed in a stepped manner are fixedly connected between the outer wall of the fixed tube (3) and the cylinder (1).

8. The laser cutter for CNC machine tool processing according to claim 7, characterized in that: The inner diameter of the top end of the fixed tube (3) is smaller than the inner diameter of the bottom end.

9. The laser cutter for CNC machine tool processing according to claim 2, characterized in that: A corrugated tube (7) is provided between the outer wall of the bottom end of the fixed tube (3) and the outer wall of the top end of the rotating block (5).

10. The laser cutter for CNC machine tool processing according to claim 9, characterized in that: When the inner diameter of the air outlet of the main air flow channel (18) is at its maximum, it is equal to the inner diameter of the bottom end of the fixed pipe (3).

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