Multifunctional laser cutting head

Abstract

The invention discloses a multifunctional laser cutting head which comprises a laser output head and a laser head assembly, the laser output head further comprises a connecting assembly, the connecting assembly comprises a connecting ring connected with the laser head assembly, a locking bolt is arranged on the surface of the connecting ring, a connecting cylinder is fixed to the inner ring face of the connecting ring, and the connecting cylinder is connected with the laser head assembly. A square groove is formed in the inner wall of the connecting cylinder, a spring rod is arranged on the inner side wall of the square groove, a rotating shaft is arranged at one end of the spring rod, a clamping plate is movably connected to the end of the spring rod through the rotating shaft, a positioning rod is arranged on the front face of the clamping plate in a penetrating mode, and an ejector rod is in threaded connection with the side face of the connecting cylinder. According to the laser cutting device, the laser cylinder and the laser head are arranged, all parts and lenses in the laser cylinder can be conveniently overhauled and maintained by splitting the sealing plate, meanwhile, the focus of light at the end of the laser cutting head can be conveniently adjusted through the convex lens capable of ascending and descending in the laser head, and the laser cutting effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cutting, and in particular to a multifunctional laser cutting head. Background Art

[0002] The laser cutting head is an important part of the laser cutting machine. Its main function is to focus the laser beam and guide it to the workpiece for cutting. This cutting head includes key components such as the nozzle, focusing lens, and tracking system. Each part has an important impact on the cutting quality. The laser cutting head has the characteristics of high precision, high efficiency, and good flexibility. It can achieve complex shape cutting and is non-contact processing, which will not cause mechanical stress to the material.

[0003] When connecting the laser cutting head in the existing factory, it is necessary to use a ring and PET tape to connect the laser output head and the cutting head. If you are not careful, it will lead to an unstable connection, which will cause the internal sensor of the cutting head to malfunction and fail to sense the laser beam in subsequent tests and work. Then, it is necessary to disassemble and inspect the connection on the top of the cutting head, and then reconnect and try again, which reduces the efficiency of laser cutting. For this reason, we have designed a multifunctional laser cutting head to increase the use effect of the cutting head. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a multifunctional laser cutting head.

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

[0006] A multifunctional laser cutting head comprises a laser output head and a laser head assembly, wherein the laser output head further comprises a connecting assembly, and the connecting assembly comprises a connecting ring connected to the laser head assembly, a locking bolt is arranged on the surface of the connecting ring, a connecting cylinder is fixed to the inner ring surface of the connecting ring, a square groove is arranged on the inner wall of the connecting cylinder, and a spring rod is arranged on the inner side wall of the square groove, a rotating shaft is arranged at one end of the spring rod, and a clamping plate is movably connected to the end of the spring rod through the rotating shaft, a positioning rod is arranged through the front of the clamping plate, and a push rod is threadedly connected to the side of the connecting cylinder.

[0007] The laser head assembly includes a cylinder, a laser cylinder and a laser head, a protective cover is provided on one side of the cylinder, and a sealed bearing is embedded on the back of the protective cover, and a control rod is fixed to the inner ring of the sealed bearing, a C-shaped ring is fixed to the end face of the control rod, and a reflector 1 is fixed at the opening of the C-shaped ring, a reflector 2 which is coaxial and parallel to the reflector is provided inside the cylinder, and an electric telescopic rod is provided on the side of the reflector 2, a wind hood is provided on the side of the cylinder, and a micro fan is provided inside the wind hood, a rotatably connected filter plate is provided on the side of the wind hood, an air inlet pipe is provided at the air outlet of the micro fan, and a filter cover is provided at the air outlet of the air inlet pipe.

[0008] Preferably, the front side of the laser barrel is connected to a sealing plate by screws, and the back side of the sealing plate is provided with a collimating lens assembly and a focusing lens assembly, and the collimating lens assembly and the focusing lens assembly are respectively composed of a collimating lens and a lens frame and a focusing lens and a lens frame, and the collimating lens is located above the focusing lens. By arranging the focusing lens and the collimating lens inside the laser barrel, it is convenient to increase the concentration of the laser beam and prevent the beam dispersion from affecting the laser cutting effect.

[0009] Preferably, both the upper and lower ports of the laser barrel are clamped with protective mirror assemblies, and the protective mirror assembly consists of a pressure ring and a protective lens. The laser barrel is located between the cylinder and the laser head, and the bottom end of the cylinder and the top end of the laser head are respectively clamped with the two ends of the laser barrel. At the same time, the two ends of the laser barrel are connected to the cylinder and the laser head by screws. By arranging protective lenses at both ends of the laser barrel, it is convenient to prevent debris from entering the interior of the laser barrel, and it is also convenient to maintain the protective lens later.

[0010] Preferably, the laser head includes a circular ring, the lower surface of which is connected to a positioning ring via fixing bolts, the lower surface of which is fixedly connected to a conical cylinder, positioning columns are fixed to the inner side walls of the positioning ring, a fixing ring is arranged between the two positioning columns, and a rubber ring is arranged on the outer ring surface of the fixing ring, a convex lens is clamped on the inner ring of the fixing ring, a protrusion is fixed on the side of the fixing ring, and a screw rod is threadedly connected to the lower surface of the protrusion, discs are arranged at both ends of the screw rod, and the disc at the bottom end of the screw rod is gear-shaped.

[0011] Furthermore, when parallel laser light passes through a convex lens, it will be refracted by the curved surface of the convex lens, causing the light to converge to a focus. This focus is the focal point of the convex lens and is also where the light converges, thereby further increasing the focusing effect of the laser beam.

[0012] Preferably, the square groove on the inner wall of the connecting tube is provided with a groove matched with the end face of the spring rod, and the inner front and rear walls of the square groove are provided with positioning grooves matched with the two ends of the positioning rod, and the inner side walls of the connecting tube are provided with movable clamping plates, and triangular grooves are provided on both sides of the laser output head for facilitating the clamping of the clamping plate. Through the spring rod, it is convenient to support the clamping plate, thereby increasing the connectivity between the laser output head and the connecting component, so that the laser output head and the connecting component are clamped.

[0013] Preferably, an input hole compatible with the laser output head is provided at the top of the cylinder, and a protective mirror is provided on the inner wall of the input hole. By providing the protective mirror at the connection between the laser output head and the cylinder, it is convenient to prevent external impurities from entering the laser output head or the interior of the cylinder.

[0014] Preferably, the opposing surfaces of the cylinder and the laser head are provided with retaining rings, and both ends of the laser cylinder are provided with outer annular grooves matched with the retaining rings, six locking screws are equidistantly arranged on the side circumference of the retaining ring, and the cylinder and the laser head are connected to the laser cylinder through the retaining ring and the locking screws, and rubber sealing rings are arranged between the cylinder, the laser head and the laser cylinder. By providing the retaining ring, it is convenient to connect the cylinder and the laser head with the laser cylinder, and it is also convenient to disassemble the laser head assembly later, and to inspect and maintain the laser head assembly.

[0015] Preferably, the reflector 1 in the protective cover and the reflector 2 in the cylinder are both placed at 45°, and the number of reflector 1 and reflector 2 are both two, the two reflectors 1 and 2 are symmetrical to each other, and the protective cover is connected to the cylinder, and the two reflectors 1 are symmetrical inside the protective cover, while the two reflectors 2 are symmetrical inside the cylinder. By setting reflector 1 and reflector 2, it is convenient to adjust the angle of the laser light.

[0016] Preferably, the opposing surfaces of the two positioning columns are provided with sliding grooves adapted to the protrusions, and the surfaces of the two protrusions are respectively connected to a light rod and a screw rod, a protective cover is provided on the inner wall of the bottom end of the conical cylinder, and a hole adapted to the end face of the screw rod is provided on the lower surface of the conical cylinder. By providing the screw rod, it is convenient to drive the protrusion to move vertically by rotating the screw rod, thereby adjusting the height of the convex lens, and facilitating fine-tuning of the focal point of the laser beam after it passes through the convex lens.

[0017] The present invention has the following beneficial effects:

[0018] 1. By setting a connecting component between the laser output head and the laser cutting head, it is convenient to increase the speed between the laser output head and the cutting head. After checking the contact surface of the output head and the cutting head, they are directly connected, which reduces the cumbersomeness of the traditional cutting head and further increases the use effect of the laser cutting head.

[0019] 2. By setting wind hoods and protective covers on both sides of the laser cutting head, it is convenient to adjust the angle of the laser beam passing through the laser cutting head to prevent the laser from deviating when passing through the laser head and affecting the internal components of the laser cutting head. At the same time, the wind hood on the side of the cutting head is convenient for cooling the inside of the laser cutting head to prevent the internal temperature of the laser cutting head from being too high, which affects the life of the internal components of the cutting head.

[0020] 3. By setting up the laser tube and laser head, it is convenient to inspect and maintain the various components and lenses inside the laser tube by disassembling the sealing plate. At the same time, the convex lens inside the laser head can be raised and lowered to facilitate the adjustment of the focus of the light at the end of the laser cutting head, thereby increasing the effect of laser cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the front cross-section structure of the present invention;

[0022] Figure 2 It is a front view structural schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the top-down structure of the convex lens of the present invention;

[0024] Figure 4 for Figure 1 A schematic diagram of the structure enlargement at point A;

[0025] Figure 5 for Figure 1 Schematic diagram of the enlarged structure at point B in FIG.

[0026] In the figure: 1. laser output head; 2. connecting ring; 3. connecting tube; 4. square groove; 5. spring rod; 6. clamping plate; 7. positioning rod; 8. ejector rod; 9. cylinder; 10. laser tube; 11. protective cover; 12. sealed bearing; 13. control rod; 14. C-shaped ring; 15. reflector 1; 16. reflector 2; 17. electric telescopic rod; 18. wind cover; 19. micro fan; 20. filter plate; 21. air inlet pipe; 22. sealing plate; 23. collimating lens; 24. focusing lens; 25. protective lens; 26. circular ring; 27. positioning ring; 28. conical cylinder; 29. ​​positioning column; 30. fixing ring; 31. convex lens; 32. bump; 33. screw rod; 34. disc; 35. clamping ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Reference Figure 1-5 A multifunctional laser cutting head comprises a laser output head 1 and a laser head assembly, wherein the laser output head 1 further comprises a connecting assembly, and the connecting assembly comprises a connecting ring 2 connected to the laser head assembly, a locking bolt is arranged on the surface of the connecting ring 2, a connecting tube 3 is fixed to the inner ring surface of the connecting ring 2, and a square groove 4 is opened on the inner wall of the connecting tube 3, and a spring rod 5 is arranged on the inner side wall of the square groove 4, a rotating shaft is arranged at one end of the spring rod 5, and a clamping plate 6 is movably connected to the end of the spring rod 5 through the rotating shaft, a positioning rod 7 is penetrated through the front of the clamping plate 6, and a top rod 8 is threadedly connected to the side of the connecting tube 3.

[0030] The square groove 4 on the inner wall of the connecting tube 3 is provided with a groove adapted to the end face of the spring rod 5, and the inner front and rear walls of the square groove 4 are provided with positioning grooves adapted to the two ends of the positioning rod 7. The inner side walls of the connecting tube 3 are provided with movable clamping plates 6, and both sides of the laser output head 1 are provided with triangular grooves for facilitating the clamping of the clamping plates 6. The spring rod 5 is used to support the clamping plates 6, thereby increasing the connectivity between the laser output head 1 and the connecting assembly, so that the laser output head 1 is clamped with the connecting assembly.

[0031] The laser head assembly includes a cylinder 9, a laser tube 10 and a laser head. A protective cover 11 is provided on one side of the cylinder 9, and a sealed bearing 12 is embedded on the back of the protective cover 11. A control rod 13 is fixed to the inner ring of the sealed bearing 12. A C-shaped ring 14 is fixed to the end face of the control rod 13, and a reflector 15 is fixed at the opening of the C-shaped ring 14. A reflector 2 16 coaxial with and parallel to the reflector 15 is provided inside the cylinder 9, and an electric telescopic rod 17 is provided on the side of the reflector 2 16.

[0032] The reflector 1 15 in the protective cover 11 and the reflector 2 16 in the cylinder 9 are both placed at 45°, and the number of reflector 1 15 and reflector 2 16 are both two, the two reflectors 15 and 16 are symmetrical to each other, and the protective cover 11 is connected to the cylinder 9, and the two reflectors 1 15 are symmetrical in the protective cover 11, and the two reflectors 2 16 are symmetrical in the cylinder 9. By arranging the reflector 1 15 and the reflector 2 16, it is convenient to adjust the angle of the laser light.

[0033] Furthermore, by providing reflector 15 and reflector 2 16 , it is convenient to adjust the angles of reflector 15 and reflector 2 16 by rotating the control rod 13 or controlling the telescopic length of the electric telescopic rod 17 , and adjust the angle of laser cutting according to the plane of the product.

[0034] The top of the cylinder 9 is provided with an input hole adapted to the laser output head 1, and the inner wall of the input hole is provided with a protective mirror. By providing the protective mirror at the connection between the laser output head 1 and the cylinder 9, it is convenient to prevent external impurities from entering the laser output head 1 or the interior of the cylinder 9.

[0035] A wind hood 18 is provided on the side of the cylinder 9, and a micro fan 19 is provided inside the wind hood 18. A rotatably connected filter plate 20 is provided on the side of the wind hood 18. An air inlet pipe 21 is provided at the air outlet of the micro fan 19, and a filter cover is provided at the air outlet of the air inlet pipe 21. By providing the wind hood 18, it is convenient to cool down the interior of the cylinder 9 to prevent the laser temperature inside the cylinder 9 from being too high and affecting the service life of other components. At the same time, filter holes for air outlet are provided at the side corners of the protective cover 11.

[0036] The front of the laser tube 10 is connected to a sealing plate 22 by screws, and the back of the sealing plate 22 is provided with a collimating lens assembly and a focusing lens assembly, and the collimating lens assembly and the focusing lens assembly are respectively composed of a collimating lens 23 and a lens frame and a focusing lens 24 and a lens frame. The collimating lens is located above the focusing lens. By arranging the focusing lens and the collimating lens inside the laser tube 10, it is convenient to increase the concentration of the laser beam and prevent the beam from being dispersed and affecting the laser cutting effect.

[0037] The upper and lower ports of the laser tube 10 are both clamped with protective mirror assemblies, and the protective mirror assembly consists of a pressure ring and a protective lens 25. The laser tube 10 is located between the cylinder 9 and the laser head, and the bottom end of the cylinder 9 and the top end of the laser head are respectively clamped with the two ends of the laser tube 10. At the same time, the two ends of the laser tube 10 are connected to the cylinder 9 and the laser head by screws. By arranging protective lenses 25 at both ends of the laser tube 10, it is convenient to prevent debris from entering the interior of the laser tube 10, and it is also convenient for subsequent maintenance of the protective lens.

[0038] The laser head includes a circular ring 26, the lower surface of which is connected to a positioning ring 27 by fixing bolts, the lower surface of which is fixedly connected to a conical cylinder 28, positioning columns 29 are fixed to the inner side walls of the positioning ring 27, a fixing ring 30 is arranged between the two positioning columns 29, and a rubber ring is arranged on the outer ring surface of the fixing ring 30, a convex lens 31 is clamped on the inner ring of the fixing ring 30, a protrusion 32 is fixed to the side of the fixing ring 30, and a screw rod 33 is threadedly connected to the lower surface of the protrusion 32, and discs 34 are arranged at both ends of the screw rod 33, and the disc 34 at the bottom end of the screw rod 33 is gear-shaped.

[0039] The opposing surfaces of the two positioning columns 29 are provided with sliding grooves adapted to the protrusions 32, and the surfaces of the two protrusions 32 are respectively connected to a light rod and a screw rod 33. The inner wall of the bottom end of the conical cylinder 28 is provided with a protective cover, and the lower surface of the conical cylinder 28 is provided with a hole adapted to the end face of the screw rod 33. By providing the screw rod 33, it is convenient to drive the protrusion 32 to move vertically by rotating the screw rod 33, thereby adjusting the height of the convex lens 31, and facilitating fine-tuning of the focal point of the laser beam after passing through the convex lens 31.

[0040] Furthermore, when the parallel laser light rays pass through the convex lens 31, they will be refracted by the curved surface of the convex lens 31, so that the light rays converge to a focus. This focus is the focusing point of the convex lens 31 and is also the place where the light rays converge, so as to further increase the focusing effect of the laser beam.

[0041] The opposite surfaces of the cylinder 9 and the laser head are provided with retaining rings 35, and both ends of the laser tube 10 are provided with outer annular grooves matched with the retaining rings 35. Six locking screws are equidistantly arranged on the side circumference of the retaining ring 35, and the cylinder 9 and the laser head are connected to the laser tube 10 through the retaining ring 35 and the locking screws, and rubber sealing rings are arranged between the cylinder 9, the laser head and the laser tube 10. By providing the retaining ring 35, it is convenient to connect the cylinder 9 and the laser head with the laser tube 10, and it is also convenient to disassemble the laser head assembly later, and to inspect and maintain the laser head assembly.

[0042] In the present invention, by setting up the laser tube 10 and the laser head, it is convenient to inspect and maintain the various components and lenses inside the laser tube 10 by disassembling the sealing plate 22. At the same time, the convex lens 31 that can be raised and lowered inside the laser head facilitates the adjustment of the focus of the light at the end of the laser cutting head, thereby increasing the effect of laser cutting.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multifunctional laser cutting head, characterized in that: The invention comprises a laser output head (1) and a laser head assembly, wherein the laser output head (1) is connected to a connection assembly, and the connection assembly comprises a connection ring (2) connected to the laser head assembly, a locking bolt is arranged on the surface of the connection ring (2), a connection tube (3) is fixed on the inner ring surface of the connection ring (2), a square groove (4) is provided on the inner wall of the connection tube (3), and a spring rod (5) is arranged on the inner side wall of the square groove (4), a rotating shaft is arranged at one end of the spring rod (5), and a clamping plate (6) is movably connected to the end of the spring rod (5) through the rotating shaft, a positioning rod (7) is arranged on the front side of the clamping plate (6), and a push rod (8) is threadedly connected to the side of the connection tube (3); The laser head assembly comprises a cylinder (9), a laser cylinder (10) and a laser head. A protective cover (11) is arranged on one side of the cylinder (9), and a sealing bearing (12) is embedded on the back of the protective cover (11). A control rod (13) is fixed to the inner ring of the sealing bearing (12). A C-shaped ring (14) is fixed to the end face of the control rod (13), and a reflector (15) is fixed at the opening of the C-shaped ring (14). The interior of the cylinder (9) is provided with a (15) a coaxial and parallel reflector 2 (16), and an electric telescopic rod (17) is arranged on the side of the reflector 2 (16), a wind cover (18) is arranged on the side of the cylinder (9), and a micro fan (19) is arranged inside the wind cover (18), a rotatably connected filter plate (20) is arranged on the side of the wind cover (18), an air inlet pipe (21) is arranged at the air outlet of the micro fan (19), and a filter cover is arranged at the air outlet of the air inlet pipe (21).

2. The multifunctional laser cutting head according to claim 1, characterized in that: The front side of the laser tube (10) is connected to a sealing plate (22) via screws, and the back side of the sealing plate (22) is provided with a collimating lens assembly and a focusing lens assembly, respectively, and the collimating lens assembly and the focusing lens assembly are respectively composed of a collimating lens (23) and a lens frame and a focusing lens (24) and a lens frame, and the collimating lens is located above the focusing lens.

3. The multifunctional laser cutting head according to claim 1, characterized in that: The upper and lower ports of the laser tube (10) are both clamped with protective mirror assemblies, and the protective mirror assembly is composed of a pressure ring and a protective lens (25). The laser tube (10) is located between the cylinder (9) and the laser head, and the bottom end of the cylinder (9) and the top end of the laser head are clamped with the two ends of the laser tube (10) respectively. At the same time, the two ends of the laser tube (10) are connected to the cylinder (9) and the laser head by screws.

4. The multifunctional laser cutting head according to claim 1, characterized in that: The laser head comprises a circular ring (26), the lower surface of the circular ring (26) is connected to a positioning ring (27) via fixing bolts, the lower surface of the positioning ring (27) is fixedly connected to a conical cylinder (28), both inner side walls of the positioning ring (27) are fixed with positioning posts (29), a fixing ring (30) is arranged between the two positioning posts (29), and a rubber ring is arranged on the outer ring surface of the fixing ring (30), a convex lens (31) is clamped on the inner ring of the fixing ring (30), a convex block (32) is fixed to the side surface of the fixing ring (30), and a screw rod (33) is threadedly connected to the lower surface of the convex block (32), and both ends of the screw rod (33) are provided with discs (34), and the disc (34) at the bottom end of the screw rod (33) is gear-shaped.

5. The multifunctional laser cutting head according to claim 1, characterized in that: The square groove (4) on the inner wall of the connecting tube (3) is provided with a groove matching the end surface of the spring rod (5), and the inner front and rear walls of the square groove (4) are provided with positioning grooves matching the two ends of the positioning rod (7), and the inner side walls of the connecting tube (3) are both provided with movable clamping plates (6).

6. The multifunctional laser cutting head according to claim 1, characterized in that: An input hole matched with the laser output head (1) is arranged on the top of the cylinder (9), and a protective mirror is arranged on the inner wall of the input hole.

7. The multifunctional laser cutting head according to claim 1, characterized in that: The opposing surfaces of the cylinder (9) and the laser head are both provided with a retaining ring (35), and both ends of the laser cylinder (10) are provided with an outer annular groove matched with the retaining ring (35), six locking screws are equidistantly arranged on the side circumference of the retaining ring (35), and the cylinder (9) and the laser head are both connected to the laser cylinder (10) via the retaining ring (35) and the locking screws.

8. The multifunctional laser cutting head according to claim 1, characterized in that: The reflector 1 (15) in the protective cover (11) and the reflector 2 (16) in the cylinder (9) are both arranged at 45 degrees, and the number of the reflector 1 (15) and the number of the reflector 2 (16) are both two, the two reflectors 1 (15) and the two reflectors 2 (16) are symmetrical to each other, and the protective cover (11) is connected to the cylinder (9).

9. The multifunctional laser cutting head according to claim 4, characterized in that: The opposing surfaces of the two positioning columns (29) are provided with a slide groove matched with the protrusion (32), and the surfaces of the two protrusions (32) are respectively connected with a smooth rod and a screw rod (33), the inner wall of the bottom end of the conical cylinder (28) is provided with a protective cover, and the lower surface of the conical cylinder (28) is provided with a hole matched with the end face of the screw rod (33).

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