Laser cutting equipment convenient for cutting spherical metal object

Abstract

The invention relates to the technical field of laser cutting, in particular to laser cutting equipment convenient for cutting spherical metal objects, which comprises a table body, a processing plate is fixedly mounted on the upper surface of the table body, a notch is formed in the middle of the upper surface of the processing plate, and clamping plates are symmetrically and slidably arranged on the upper surface of the processing plate; mounting grooves are vertically formed in the ends, away from each other, of the two clamping plates, first threaded rods are vertically and rotatably mounted in the mounting grooves, the first threaded rods are sleeved with U-shaped first sliding blocks in a threaded mode, and rectangular frames are fixedly mounted on the surfaces of the first sliding blocks; a second threaded rod with the left end and the right end opposite in thread direction is horizontally and rotationally installed in the rectangular frame, the second threaded rod is symmetrically sleeved with second sliding blocks in a threaded mode, and abutting rods are fixedly installed on the surfaces of the second sliding blocks. Spherical metal objects of different sizes can be rapidly and stably positioned, shaking of the spherical metal objects is avoided, the laser cutting quality is improved, and high practicability is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cutting, and in particular to a laser cutting device which is convenient for cutting spherical metal objects. Background Art

[0002] In modern industrial production, laser cutting uses a high-energy-density laser beam to heat the workpiece, causing the temperature to rise rapidly and reach the boiling point of the material in a very short time. The material begins to vaporize and form steam. The steam is ejected at a very high speed, and at the same time, an incision is formed on the material. Laser cutting technology is widely used in the processing of various materials due to its advantages of high precision, high efficiency and non-contact processing.

[0003] Existing laser cutting equipment needs to position the object before cutting it, and then cut the object through the laser cutting mechanism. However, when cutting spherical metal objects, due to their curved surface, they are difficult to fix stably and are prone to shaking, which can easily lead to problems such as low cutting accuracy and poor incision quality. Summary of the Invention

[0004] The purpose of the present invention is to solve the following shortcomings in the prior art. The existing laser cutting equipment needs to position the object before cutting it, and then cut the object through the laser cutting mechanism. However, for the cutting of spherical metal objects, due to the curved surface, it is difficult to fix it stably and it is easy to shake, which easily leads to problems such as low cutting accuracy and poor incision quality. A laser cutting device that is convenient for cutting spherical metal objects is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A laser cutting device for cutting spherical metal objects comprises a table, a laser cutting mechanism is fixedly mounted on the upper surface of the table, a processing plate is fixedly mounted on the upper surface of the table, a recess is provided in the middle of the upper surface of the processing plate for placing the spherical metal object, and clamping plates are symmetrically slidably mounted on the upper surface of the processing plate, and relative movement of the two clamping plates is controlled by a drive assembly;

[0007] The two clamping plates are each provided with a mounting groove vertically at one end away from each other, a first threaded rod is vertically rotatably installed in the mounting groove, a U-shaped first slider is threadedly sleeved on the first threaded rod, a rectangular frame is fixedly installed on the surface of the first slider, a second threaded rod with opposite thread directions on the left and right ends is horizontally rotatably installed in the rectangular frame, a second slider is symmetrically threaded on the second threaded rod, a push rod is fixedly installed on the surface of the second slider, through openings are symmetrically provided on the surface of the clamping plate, and the two push rods pass through the two through openings respectively.

[0008] Preferably, the driving assembly includes a driving motor fixedly mounted on one side of the processing plate and a third threaded rod with opposite thread directions at the left and right ends. A mounting groove is horizontally opened on the back side of the processing plate. The third threaded rod is horizontally rotatably mounted in the mounting groove, and one end of the third threaded rod is fixedly connected to the output shaft of the driving motor. A U-shaped third slider is symmetrically threaded on the third threaded rod, and one end of the two third sliders is respectively fixedly connected to the surfaces of the two clamping plates.

[0009] Preferably, a non-slip layer is bonded to the surfaces of the two clamping plates that are close to each other and the surface of the support rod, and the material of the non-slip layer is rubber.

[0010] Preferably, a concave opening is provided on the surface of the platform, and spring rods are horizontally fixedly installed in the left and right walls of the concave opening. A partition is fixedly installed on one end of the spring rod through an L-shaped plate. The two partitions are located between the laser cutting mechanism and the two clamping plates. The two spring rods are controlled to retract together by the pressing component.

[0011] Preferably, the pressing component includes a telescopic rod fixedly installed horizontally in the concave mouth, a U-shaped supporting plate fixedly installed at the free end of the telescopic rod, and two inclined plates. The two inclined plates are respectively fixedly installed on the surfaces of the two L-shaped plates. The surfaces of the inclined plates are provided with sliding grooves, and the two ends of the U-shaped supporting plate are respectively slidably arranged in the two sliding grooves.

[0012] Preferably, a semi-arc copper block is fixedly mounted on the upper surface of the partition, and the two copper blocks are used to form a cooling component that covers the laser head in the laser cutting mechanism.

[0013] Preferably, a small freezer is fixedly mounted on the upper surface of the platform, a cavity is provided in the copper block, a plurality of air ports connected to the cavity are equidistantly provided on the surface of the copper block, and air supply components are symmetrically provided in the concave ports, and two groups of the air supply components are respectively used to supply the cold air in the small freezer to the two cavities.

[0014] Preferably, the air supply assembly includes a hollow rod fixedly installed horizontally in the concave mouth and an insertion rod inserted in the hollow rod with a sliding seal. An air inlet pipe and an air outlet pipe are fixedly installed on the surface of the hollow rod. One ends of the two air inlet pipes are connected to the inside of the small freezer, and one ends of the two air outlet pipes are respectively connected to the two cavities. One-way valves are provided in the air inlet pipe and the air outlet pipe. A connecting rod is fixedly installed on the surface of the insertion rod, and one ends of the two connecting rods are respectively fixedly connected to the free ends of the two spring rods.

[0015] Preferably, the conducting direction of the one-way valve in the air inlet pipe is from the inside of the small freezer to the inside of the hollow rod, and the conducting direction of the one-way valve in the air outlet pipe is from the inside of the hollow rod to the cavity.

[0016] Preferably, the surface of the hollow rod is oxidized to form an insulating oxide layer, and the insulating oxide layer is used to reduce the heat exchange efficiency with the outside world.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the cooperation between the first threaded rod, the first slider, the rectangular frame, the second threaded rod and the stop rod, the spherical metal object can be quickly and stably positioned to prevent it from shaking. It can also position spherical metal objects of different sizes, and has strong practicality.

[0019] 2. The laser head in the laser cutting mechanism will be at the top after completing cutting the object. At this time, when the operator picks up the cut object or places the object to be cut, the two partitions will approach each other and press against each other under the action of the pressing component, thereby separating the operator's palm from the laser cutting mechanism, avoiding the operator's hand from being under the laser head of the laser cutting mechanism, which may pose a safety hazard.

[0020] 3. When the cut object is taken, the two partitions are pressed against each other. At this time, the two copper blocks will also cover the laser head in the laser cutting mechanism, which can quickly transfer the heat generated by the laser head and play a heat dissipation role, avoiding the performance degradation or even damage of the laser head due to excessive temperature, thereby extending the service life of the laser head;

[0021] 4. Under the action of the air supply component, when the two partitions approach each other, the cold air in the small freezer will enter the cavity opened in the copper block, and will be ejected from multiple air ports and act on the surface of the laser cutting mechanism, thereby achieving the effects of efficient heat dissipation, preventing thermal deformation, protecting optical components, and inhibiting the adhesion of dust and slag, thereby improving processing stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front perspective structural diagram of a laser cutting device proposed by the present invention that is convenient for cutting spherical metal objects;

[0023] Figure 2 This is a schematic top-down perspective structural diagram of a laser cutting device proposed by the present invention that is convenient for cutting spherical metal objects;

[0024] Figure 3 This is a schematic side perspective structural diagram of a laser cutting device proposed by the present invention that is convenient for cutting spherical metal objects;

[0025] Figure 4 This is a partial three-dimensional structural diagram of a processing plate in a laser cutting device proposed by the present invention for facilitating cutting of spherical metal objects;

[0026] Figure 5 This is a schematic diagram of a partial three-dimensional structure of a copper block in a laser cutting device proposed by the present invention for facilitating cutting of spherical metal objects;

[0027] Figure 6 This is a schematic diagram of a partial three-dimensional cross-sectional structure of a platform of a laser cutting device proposed by the present invention for facilitating cutting of spherical metal objects;

[0028] Figure 7 A schematic diagram of a partial three-dimensional cross-sectional structure of an air supply assembly and a partition in a laser cutting device proposed by the present invention for facilitating cutting of spherical metal objects;

[0029] Figure 8 for Figure 1 Enlarged structural diagram at point A in the middle.

[0030] In the figure: 1 body, 2 laser cutting mechanism, 3 processing plate, 4 clamping plate, 5 mounting groove, 6 first threaded rod, 7 first slider, 8 rectangular frame, 9 second threaded rod, 10 second slider, 11 push rod, 12 through-hole, 13 recess, 14 drive motor, 15 third threaded rod, 16 third slider, 17 recessed mouth, 18 spring rod, 19 L-shaped plate, 20 partition, 21 telescopic rod, 22 U-shaped push plate, 23 inclined plate, 24 slide, 25 copper block, 26 small freezer, 27 air port, 28 hollow rod, 29 plug rod, 30 air inlet pipe, 31 air outlet pipe, 32 connecting rod. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0032] Reference Figure 1-8 , a laser cutting device that is convenient for cutting spherical metal objects, includes a table 1, a laser cutting mechanism 2 is fixedly installed on the upper surface of the table 1, a processing plate 3 is fixedly installed on the upper surface of the table 1, a recess 13 for placing spherical metal objects is provided in the middle of the upper surface of the processing plate 3, a clamping plate 4 is symmetrically slidably provided on the upper surface of the processing plate 3, and the two clamping plates 4 are controlled to move relative to each other by a driving assembly, the driving assembly includes a driving motor 14 fixedly installed on one side of the processing plate 3 and a third threaded rod 15 with opposite thread directions at the left and right ends, a mounting groove is horizontally opened on the back side of the processing plate 3, the third threaded rod 15 is horizontally rotatably installed in the mounting groove, and one end of the third threaded rod 15 is fixedly connected to the output shaft of the driving motor 14, and a U-shaped third slider 16 is symmetrically threaded on the third threaded rod 15, and one end of the two third sliders 16 is fixedly connected to the surfaces of the two clamping plates 4 respectively.

[0033] The two clamping plates 4 are each provided with a mounting groove 5 vertically at one end away from each other, and a first threaded rod 6 is vertically rotatably installed in the mounting groove 5, and a U-shaped first slider 7 is threadedly sleeved on the first threaded rod 6, and the surface of the first slider 7 is in sliding contact with the groove wall of the mounting groove 5, and a rectangular frame 8 is fixedly installed on the surface of the first slider 7, and a second threaded rod 9 with opposite thread directions at the left and right ends is horizontally rotatably installed in the rectangular frame 8, and a second slider 10 is symmetrically threaded on the second threaded rod 9, and the surface of the second slider 10 is in sliding contact with the inner frame wall of the rectangular frame 8, and a push rod 11 is fixedly installed on the surface of the second slider 10, and a space is reserved between the two adjacent push rods 11 for the laser cutting beam to pass through, and through openings 12 are symmetrically opened on the surface of the clamping plate 4, and the two push rods 11 pass through the two through openings 12 respectively.

[0034] When positioning the spherical metal object, first place it in the recess 13 and between the two clamping plates 4. Under the action of gravity, the spherical metal object will be located at the bottom center of the recess 13. Then, start the drive motor 14 to control the third threaded rod 15 to rotate, so that the two third sliders 16 symmetrically threaded on the third threaded rod 15 respectively move the two clamping plates 4 relative to each other, so that the two clamping plates 4 are close to each other until the spherical metal object is tightly pressed and positioned between them. At this time, rotate the first threaded rod 6 to control the first slider 7 to move the rectangular frame 8 vertically until the two rods are pressed against each other. After 11 are moved to the corresponding height position of the upper half of the spherical metal object, the second threaded rod 9 is rotated at this time to control the two second sliders 10 to respectively carry the two push rods 11 to move relative to each other, until the two push rods 11 are tightly against the surface of the upper half of the spherical metal object, and the two push rods 11 form three-point contact with the surface of the upper half of the spherical metal object (forming a stable support triangle with the recess 13 below), the spherical metal object is rigidly constrained in the directions of the three coordinate axes of X, Y, and Z to form a stable six-point positioning structure, and then the laser cutting mechanism 2 can be used to laser cut the positioned spherical metal object.

[0035] The surfaces of the two clamping plates 4 that are close to each other and the surface of the support rod 11 are both bonded with an anti-slip layer, and the material of the anti-slip layer is rubber.

[0036] The anti-slip layer made of rubber has good elasticity and viscosity, thereby increasing the friction between the contact surface between the clamping plate 4 and the push rod 11 and the spherical metal object.

[0037] A concave opening 17 is provided on the surface of the platform 1, and spring rods 18 are fixedly installed horizontally in the left and right walls of the concave opening 17. A partition 20 is fixedly installed at one end of the spring rod 18 through an L-shaped plate 19. The two partitions 20 are both located between the laser cutting mechanism 2 and the two clamping plates 4. The two spring rods 18 are controlled to retract together by a pressing component. The pressing component includes a telescopic rod 21 fixedly installed horizontally in the concave opening 17, a U-shaped supporting plate 22 fixedly installed at the free end of the telescopic rod 21, and two inclined plates 23. The two inclined plates 23 are respectively fixedly installed on the surfaces of the two L-shaped plates 19. A slide groove 24 is provided on the surface of the inclined plate 23, and the two ends of the U-shaped supporting plate 22 are respectively slidably arranged in the two slide grooves 24.

[0038] The laser head in the laser cutting mechanism 2 will quickly move to the highest point after cutting is completed. When the two spring rods 18 are not affected by external forces and are in a natural state, the telescopic rod 21 will be in a stretched state, and the two partitions 20 will not offset each other, allowing the laser beam emitted by the laser head in the laser cutting mechanism 2 to pass through.

[0039] When the cutting is completed and the laser head moves to the highest point, the operator needs to pick up the cut spherical metal object and place and position the spherical metal object to be cut subsequently. The operator will approach the table 1, and his body parts will be against the surface of the U-shaped support plate 22. In the process of approaching the table 1, the U-shaped support plate 22 will be pushed to move in the direction close to the table 1, and the telescopic rod 21 will gradually shrink, and the two ends of the U-shaped support plate 22 will slide in the two slide grooves 24 respectively. Under the action of the inclined surface pressure, the two spring rods 18 will shrink together, and the two partitions 20 will also approach each other and resist each other, thereby separating the operator's hands from the laser cutting mechanism 2. The partition 20 has good light-shielding properties and can effectively block the scattered laser and residual laser that may be generated by the laser head, thereby preventing the operator from being injured due to accidental exposure to the laser when picking up the cut object or placing the object to be cut subsequently, thereby greatly improving the safety of the equipment during use.

[0040] After completing the picking and placing operations, the operator will move away from the table 1, and the pressing force exerted by the body on the U-shaped support plate 22 will disappear. The two spring rods 18 will quickly stretch and recover, and the two partitions 20 will also move away from each other, thereby forming a space between them again for the laser beam emitted by the laser head in the laser cutting mechanism 2 to pass through.

[0041] A semi-arc-shaped copper block 25 is fixedly mounted on the upper surface of the partition 20 . The two copper blocks 25 are used to form a cooling component that covers the laser head in the laser cutting mechanism 2 .

[0042] When the laser cutting mechanism 2 completes cutting of the spherical metal object and moves up to the highest point, the laser head will be located between the two copper blocks 25. During the laser cutting process, the laser head will generate a lot of heat. When the operator takes the cut object, the two partitions 20 will be against each other. At this time, the two copper blocks 25 will also cover the laser head in the laser cutting mechanism 2 and stick to the laser head. The copper block 25 has good thermal conductivity and can quickly transfer the heat generated by the laser head, playing a role in heat dissipation, avoiding the performance degradation or even damage of the laser head due to excessive temperature, and extending the service life of the laser head.

[0043] A small refrigerator 26 is fixedly installed on the upper surface of the table 1. A cavity is opened in the copper block 25. A plurality of air ports 27 connected to the cavity are opened at equal intervals on the surface of the copper block 25. An air supply assembly is symmetrically arranged in the concave opening 17. Two sets of air supply assemblies are used to supply the cold air in the small refrigerator 26 to the two cavities respectively. The air supply assembly includes a hollow rod 28 fixedly installed horizontally in the concave opening 17 and an insertion rod 29 inserted in the hollow rod 28 with a sliding seal. An air inlet pipe 30 and an air outlet pipe are fixedly installed on the surface of the hollow rod 28. 31. One end of the two air inlet pipes 30 is connected to the small freezer 26, and one end of the two air outlet pipes 31 is respectively connected to the two cavities. A one-way valve is provided in the air inlet pipe 30 and the air outlet pipe 31. The conducting direction of the one-way valve in the air inlet pipe 30 is from the small freezer 26 to the hollow rod 28, and the conducting direction of the one-way valve in the air outlet pipe 31 is from the hollow rod 28 to the cavity. A connecting rod 32 is fixedly installed on the surface of the insertion rod 29, and one end of the two connecting rods 32 is fixedly connected to the free ends of the two spring rods 18 respectively.

[0044] The small freezer 26 can be used to produce and store cold air. The two insertion rods 29 will move together with the free ends of the two spring rods 18 respectively. When the spring rod 18 contracts, the insertion rod 29 will also move toward the inside of the hollow rod 28. When the spring rod 18 stretches, the insertion rod 29 will also move toward the outside of the hollow rod 28. That is, when the spring rod 18 contracts, the volume inside the hollow rod 28 becomes smaller, and when the spring rod 18 stretches, the volume inside the hollow rod 28 becomes larger.

[0045] When the spring rod 18 is stretched, the volume inside the hollow rod 28 increases, the pressure decreases, and the cold air in the small freezer 26 enters the two hollow rods 28 from the two air inlet pipes 30 respectively. When the cut objects are taken or the objects to be processed are placed, the operator approaches the table 1 and pushes the U-shaped support plate 22 to move, the two spring rods 18 will contract together. At this time, the volume inside the hollow rod 28 decreases, the pressure increases, and the cold air in the hollow rod 28 will be discharged from the outlet. The air pipe 31 enters the cavity opened in the copper block 25 and is discharged from multiple air ports 27 to achieve pre-cooling of the copper block 25. At the same time, the ejected cold air will also blow on the surface of the laser head. When the operation of picking up or placing an object is completed, the operator moves away from the platform 1 and separates from the U-shaped support plate 22. The two spring rods 18 will stretch rapidly. At this time, the volume inside the hollow rod 28 increases and the pressure decreases. The cold air in the small freezer 26 will enter the two hollow rods 28 from the two air inlet pipes 30 respectively.

[0046] Cold air is ejected from the air port 27 of the copper block 25, which can quickly take away the heat from the surface of the laser head in the laser cutting mechanism 2 and efficiently cool the key components. This can avoid problems such as laser wavelength drift and beam quality degradation caused by thermal effects, ensure the stability of laser output and the accuracy of cutting energy, and maintain high-precision operation of the equipment.

[0047] Metal parts are prone to thermal deformation at high temperatures, which affects cutting accuracy. The continuous action of cold air can keep the laser cutting mechanism 2 at a relatively low and stable temperature, preventing deformation due to local overheating. Avoiding thermal deformation can ensure the accuracy of the laser head when adjusting the position and angle, ensuring that the laser beam is always perpendicular to the cutting surface of the spherical metal object, thereby improving the overall cutting accuracy.

[0048] Optical components such as the focusing lens in the laser cutting mechanism 2 are sensitive to temperature. High temperature may cause their performance to decline or even damage them. The low-temperature environment formed by the cold air ejection can effectively protect the optical components and prevent them from problems such as lens coating aging and refractive index changes due to excessive temperature, thereby ensuring the focusing effect of the laser beam and improving the cutting quality and efficiency.

[0049] When laser cutting spherical metal objects, metal dust and slag will be generated. These substances adhere to the surface of the laser head of the laser cutting mechanism 2, which will not only affect the normal operation of the equipment, but may also have an adverse effect on the cutting quality. The airflow formed by the cold air ejection can blow off the dust and slag attached to the surface of the laser head, keeping the equipment clean and reducing the frequency of equipment maintenance.

[0050] The surface of the hollow rod 28 is oxidized to form an insulating oxide layer, which is used to reduce the heat exchange efficiency with the outside world and reduce the influence of the outside temperature on the cold air entering the hollow rod 28.

[0051] In the present invention, through the cooperation between the first threaded rod 6, the first slider 7, the rectangular frame 8, the second threaded rod 9, the second slider 10, the push rod 11 and the drive assembly, the spherical metal object can be quickly and stably positioned to prevent it from shaking, and spherical metal objects of different sizes can be positioned, which has strong practicality.

[0052] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A laser cutting device for cutting spherical metal objects, comprising a platform (1), characterized in that: A laser cutting mechanism (2) is fixedly mounted on the upper surface of the platform (1), a processing plate (3) is fixedly mounted on the upper surface of the platform (1), a recess (13) for placing a spherical metal object is provided in the middle of the upper surface of the processing plate (3), a clamping plate (4) is symmetrically slidably mounted on the upper surface of the processing plate (3), and the relative movement of the two clamping plates (4) is controlled by a driving assembly; The ends of the two clamping plates (4) that are away from each other are vertically provided with mounting grooves (5), a first threaded rod (6) is vertically rotatably installed in the mounting grooves (5), a U-shaped first slider (7) is threadedly sleeved on the first threaded rod (6), a rectangular frame (8) is fixedly installed on the surface of the first slider (7), a second threaded rod (9) with opposite thread directions at the left and right ends is horizontally rotatably installed in the rectangular frame (8), a second slider (10) is symmetrically threadedly sleeved on the second threaded rod (9), a push rod (11) is fixedly installed on the surface of the second slider (10), through openings (12) are symmetrically provided on the surface of the clamping plates (4), and the two push rods (11) pass through the two through openings (12) respectively.

2. The laser cutting device for cutting spherical metal objects according to claim 1, characterized in that: The driving assembly comprises a driving motor (14) fixedly mounted on one side of a processing plate (3) and a third threaded rod (15) with threads on the left and right ends in opposite directions. A mounting groove is horizontally provided on the back side of the processing plate (3). The third threaded rod (15) is horizontally rotatably mounted in the mounting groove, and one end of the third threaded rod (15) is fixedly connected to the output shaft of the driving motor (14). A U-shaped third slider (16) is symmetrically threadedly sleeved on the third threaded rod (15). One end of the two third sliders (16) is respectively fixedly connected to the surfaces of the two clamping plates (4).

3. The laser cutting device for cutting spherical metal objects according to claim 1, characterized in that: The surfaces of the two clamping plates (4) that are close to each other and the surface of the support rod (11) are both bonded with an anti-slip layer, and the material of the anti-slip layer is rubber.

4. The laser cutting device for cutting spherical metal objects according to claim 1, characterized in that: A concave opening (17) is provided on the surface of the platform (1), and spring rods (18) are fixedly installed horizontally in the left and right walls of the concave opening (17). A partition (20) is fixedly installed at one end of the spring rod (18) through an L-shaped plate (19). The two partitions (20) are located between the laser cutting mechanism (2) and the two clamping plates (4). The two spring rods (18) are controlled to retract together by a pressing component.

5. The laser cutting device for cutting spherical metal objects according to claim 4, characterized in that: The pressing component comprises a telescopic rod (21) fixedly mounted horizontally in the concave opening (17), a U-shaped pressing plate (22) fixedly mounted on the free end of the telescopic rod (21), and two inclined plates (23). The two inclined plates (23) are respectively fixedly mounted on the surfaces of the two L-shaped plates (19). The surfaces of the inclined plates (23) are provided with sliding grooves (24). The two ends of the U-shaped pressing plate (22) are respectively slidably arranged in the two sliding grooves (24).

6. The laser cutting device for cutting spherical metal objects according to claim 5, characterized in that: A semi-arc-shaped copper block (25) is fixedly mounted on the upper surface of the partition (20), and the two copper blocks (25) are used to form a cooling component that covers the laser head in the laser cutting mechanism (2).

7. The laser cutting device for cutting spherical metal objects according to claim 6, characterized in that: A small refrigerator (26) is fixedly mounted on the upper surface of the platform (1); a cavity is provided in the copper block (25); a plurality of air ports (27) communicating with the cavity are provided on the surface of the copper block (25) at equal intervals; air supply components are symmetrically provided in the concave openings (17); and two groups of the air supply components are respectively used to supply cold air in the small refrigerator (26) to the two cavities.

8. The laser cutting device for cutting spherical metal objects according to claim 7, characterized in that: The air supply assembly comprises a hollow rod (28) fixedly mounted horizontally in the concave opening (17) and an insertion rod (29) inserted in the hollow rod (28) in a sliding and sealing manner. An air inlet pipe (30) and an air outlet pipe (31) are fixedly mounted on the surface of the hollow rod (28). One ends of the two air inlet pipes (30) are connected to the interior of the small refrigerator (26). One ends of the two air outlet pipes (31) are respectively connected to the two cavities. One-way valves are provided in the air inlet pipe (30) and the air outlet pipe (31). A connecting rod (32) is fixedly mounted on the surface of the insertion rod (29). One ends of the two connecting rods (32) are respectively fixedly connected to the free ends of the two spring rods (18).

9. The laser cutting device for cutting spherical metal objects according to claim 8, characterized in that: The one-way valve in the air inlet pipe (30) is connected from the inside of the small refrigerator (26) to the inside of the hollow rod (28), and the one-way valve in the air outlet pipe (31) is connected from the inside of the hollow rod (28) to the cavity.

10. The laser cutting device for cutting spherical metal objects according to claim 8, characterized in that: The surface of the hollow rod (28) is oxidized to form an insulating oxide layer, and the insulating oxide layer is used to reduce the heat exchange efficiency with the outside world.

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