Dustproof focusing lens group of ultrafast laser processing head

Abstract

This utility model discloses a dustproof focusing lens assembly for an ultrafast laser processing head, relating to the field of laser cutting head technology. It includes a mounting block with a mounting groove on its top, a pull plate on one side of the mounting block, and a support plate fixedly connected to one side of the pull plate. The outer side of the support plate is slidably connected to the interior of the mounting groove. Bolts are installed between the mounting block and the pull plate. A first through hole is formed at the bottom of the inner wall of the mounting groove, and a second through hole is formed inside the support plate. A mounting ring is slidably connected inside the second through hole. This utility model discloses a dustproof focusing lens assembly for an ultrafast laser processing head. Through the synergistic action of the components within the positioning assembly, a mounting ring containing a dustproof lens can be installed in the second through hole. This ensures the stability of the lens during equipment operation, preventing lens displacement or detachment due to vibration or external force, thereby guaranteeing the accuracy of beam transmission and focusing. Simultaneously, the operation process is simple, facilitating the disassembly and assembly of the dustproof lens by maintenance personnel.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting head technology, and in particular to a dustproof focusing lens assembly for an ultrafast laser processing head. Background Technology

[0002] Laser cutting heads are used to focus an input beam of light to cut workpieces made of materials such as metal. When using them, it is necessary to ensure the cleanliness of the internal optical channel, and also to facilitate assembly, processing, and maintenance.

[0003] Patent application CN207447646U discloses a dustproof structure for a laser cutting head, comprising a collimator, a collimating lens group, a focusing lens group, and a nozzle arranged sequentially. Dustproof components are provided between the collimator and the collimating lens group, and between the focusing lens group and the nozzle. Each dustproof component includes a mounting block, with a pull-out dustproof drawer on one side. The dustproof drawer has a dustproof lens and a first through hole for mounting the dustproof lens. A second through hole corresponding to the first through hole is provided on the mounting block. By setting two sets of dustproof components, the beam is kept dust-free from input to output, improving the beam focusing rate. The pull-out design facilitates maintenance and assembly, resulting in a simple structure and low cost.

[0004] However, this structure places the dustproof lens in the first through hole of the dustproof drawer, but does not fix the lens structure. This may cause the lens to shift or fall off due to vibration or external force during equipment operation, affecting the transmission and focusing of the beam, resulting in a decrease in cutting quality, and may even damage the laser cutting head. To address the above problems, we have launched a dustproof focusing lens assembly for an ultrafast laser processing head. Utility Model Content

[0005] This utility model discloses a dustproof focusing lens assembly for an ultrafast laser processing head. It studies and improves upon the existing structure and its shortcomings, providing a dustproof focusing lens assembly for an ultrafast laser processing head to achieve better practical value.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dustproof focusing lens assembly for an ultrafast laser processing head includes a mounting block. The top of the mounting block has a mounting groove. A pull plate is provided on one side of the mounting block, and a support plate is fixedly connected to one side of the pull plate. The outer side of the support plate is slidably connected to the interior of the mounting groove. Bolts are provided between the mounting block and the pull plate. A first through hole is provided at the bottom of the inner wall of the mounting groove. A second through hole is provided inside the support plate. A mounting ring is slidably connected inside the second through hole. A dustproof lens is provided inside the mounting ring. Grooves are provided inside the second through hole and on the outer side of the mounting ring. Rubber rings are provided inside the grooves. A positioning component is provided on the top of the support plate for fixing the mounting ring.

[0008] In a preferred embodiment, the positioning component includes an annular groove formed at the top of the tray, and equidistant grooves formed at the bottom of the inner wall of the annular groove. An installation rod is slidably connected inside the slidable groove, the top of the installation rod extends to the top of the tray and is fixedly connected to an installation strip, and the bottom of the installation strip is fixedly connected to an insert rod.

[0009] In a preferred embodiment, the top of the mounting ring has an insertion hole, the outer side of the insertion rod is slidably connected to the inside of the insertion hole, and two compression blocks are fixedly connected to the outer side of the insertion rod, with the bottom of the two compression blocks abutting against the top of the mounting ring.

[0010] In a preferred embodiment, the top of the mounting strip is provided with a ring, and a connecting rod is equidistantly slidably connected inside the ring, the bottom of the connecting rod being threadedly connected to the top of the mounting strip.

[0011] In a preferred embodiment, a fixed ring is slidably connected inside the annular groove, and the inside of the fixed ring is slidably connected to the outside of the mounting rod. A gear and an internal gear ring are rotatably connected to the top of the fixed ring, and the gear meshes with the internal gear ring.

[0012] In a preferred embodiment, the inner side of the gear is slidably connected to the outer side of the mounting rod, the outer side of the mounting rod is provided with a keyway, and the inside of the gear is fixedly connected with a flat key.

[0013] In a preferred embodiment, the retaining ring is fixed to the annular groove by screws, and a spring is provided at the bottom of the retaining ring and on the outside of the mounting rod.

[0014] The dustproof focusing lens assembly for an ultrafast laser processing head provided by this utility model has the following advantages:

[0015] Firstly, through the coordinated action of components such as mounting strips, mounting rods, insert rods, extrusion blocks, rings, springs, gears, and internal gear rings in the positioning assembly, the mounting ring with the dustproof lens is firmly fixed in the second through hole. The lens will not shift or fall off due to vibration or external force during equipment operation, ensuring the stability of beam transmission and focusing, and improving cutting quality.

[0016] Secondly, the positioning component is easy to operate. Maintenance personnel can quickly remove and install the dustproof lens by simply pulling the ring and rotating the inner gear ring without the need for additional tools, making maintenance convenient. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a dustproof focusing lens assembly for an ultrafast laser processing head proposed in this utility model.

[0018] Figure 2 This is a first exploded view of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0019] Figure 3 This is a second exploded view of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0020] Figure 4 This is a third exploded view of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0021] Figure 5 This is the fourth exploded view of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0022] Figure 6 This is the fifth exploded view of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0023] Figure 7 This is the sixth exploded schematic diagram of the dustproof focusing lens assembly of an ultrafast laser processing head proposed in this utility model.

[0024] In the attached diagram: 1. Mounting block; 2. Mounting groove; 3. Pull plate; 4. Support plate; 5. Bolt; 6. First through hole; 7. Second through hole; 8. Groove; 9. Mounting ring; 10. Dustproof lens; 11. Rubber ring; 12. Annular groove; 13. Receiving groove; 14. Mounting rod; 15. Mounting strip; 16. Insert rod; 17. Extrusion block; 18. Circular ring; 19. Connecting rod; 20. Fixing ring; 21. Gear; 22. Internal gear ring; 23. Keyway; 24. Insertion hole. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] The dustproof focusing lens assembly for an ultrafast laser processing head disclosed in this utility model is mainly used in laser cutting head applications.

[0027] Reference Figures 1 to 7 A dustproof focusing lens assembly for an ultrafast laser processing head includes: a mounting block 1, a mounting groove 2 on the top of the mounting block 1, a pull plate 3 on one side of the mounting block 1, a support plate 4 fixedly connected to one side of the pull plate 3, the outer side of the support plate 4 slidably connected to the inside of the mounting groove 2, a bolt 5 between the mounting block 1 and the pull plate 3, a first through hole 6 at the bottom of the inner wall of the mounting groove 2, a second through hole 7 inside the support plate 4, a mounting ring 9 slidably connected inside the second through hole 7, a dustproof lens 10 inside the mounting ring 9, grooves 8 inside the second through hole 7 and the outer side of the mounting ring 9, a rubber ring 11 inside the grooves 8, and a positioning component on the top of the support plate 4 for fixing the mounting ring 9;

[0028] The positioning component includes an annular groove 12, which is formed on the top of the tray 4. The bottom of the inner wall of the annular groove 12 is provided with equidistant grooves 13. An installation rod 14 is slidably connected inside the groove 13. The top of the installation rod 14 extends to the top of the tray 4 and is fixedly connected to an installation strip 15. The bottom of the installation strip 15 is fixedly connected to an insertion rod 16.

[0029] The top of the mounting ring 9 has an insertion hole 24. The outer side of the insertion rod 16 is slidably connected to the inside of the insertion hole 24. Two pressing blocks 17 are fixedly connected to the outer side of the insertion rod 16. The bottom of the two pressing blocks 17 abuts against the top of the mounting ring 9.

[0030] The top of the mounting strip 15 is provided with a ring 18, and a connecting rod 19 is equidistantly slidably connected inside the ring 18. The bottom of the connecting rod 19 is threadedly connected to the top of the mounting strip 15.

[0031] A fixed ring 20 is slidably connected inside the annular groove 12. The inside of the fixed ring 20 is slidably connected to the outside of the mounting rod 14. A gear 21 and an internal gear ring 22 are rotatably connected to the top of the fixed ring 20. The gear 21 and the internal gear ring 22 mesh with each other.

[0032] The inner side of gear 21 is slidably connected to the outer side of mounting rod 14. A keyway 23 is provided on the outer side of mounting rod 14. A flat key is fixedly connected inside gear 21.

[0033] Reference Figures 1 to 7 In a preferred embodiment, the retaining ring 20 is fixed to the annular groove 12 by screws, and a spring is provided at the bottom of the retaining ring 20 and on the outside of the mounting rod 14.

[0034] In the above technical solution, considering that the dustproof lens is placed in the first through hole of the dustproof drawer but the lens structure is not fixed, this may cause the lens to shift or fall off due to vibration or external force during equipment operation, affecting the transmission and focusing of the beam, resulting in a decrease in cutting quality, and even potentially damaging the laser cutting head. To solve this problem, the specific operation is as follows: When installing the dustproof lens 10, first remove the bolt 5, pull the pull plate 3 and the support plate 4 from the mounting groove 2, and use the positioning component to pull the ring 18 through the connecting rod 19 to lift the mounting strip 15, mounting rod 14 and insertion rod 16. The mounting rod 14 will slide upward inside the receiving groove 13, the fixing ring 20 and the gear 21, and the spring will be compressed until the insertion hole 16 is misaligned with the top of the support plate 4. Then rotate the internal gear ring 22, and use the meshing of the internal gear ring 22 and the gear 21 to close the gap. Then, the gear 21 is rotated, and the keyway 23 drives the mounting rod 14 to rotate, causing the mounting strip 15 and the insertion rod 16 to rotate and become misaligned with the second through hole 7. Then, the mounting ring 9 containing the dustproof lens 10 is placed into the second through hole 7 and pressed, squeezing the rubber ring 11 into the groove 8, initially fixing the mounting ring 9 containing the dustproof lens 10 in the second through hole 6. Then, the internal gear ring 22 is rotated in the opposite direction, causing the mounting rod 14, mounting strip 15 and insertion rod 16 to rotate back until the insertion rod 16 corresponds to the insertion hole 24. Under the elastic force of the spring, the insertion rod 16 enters the insertion hole 24, and the pressing block 17 presses against the top of the mounting ring 9, thereby installing the dustproof lens 10 in the second through hole 7. Finally, the support plate 4 containing the lens is placed back into the mounting groove 2, and the mounting block 1 and pull plate 3 are fixed with bolts 5. The structure is then installed on the laser cutting head. Through the coordinated action of components such as mounting strip 15, mounting rod 14, insertion rod 16, extrusion block 17, ring 18, spring, gear 21, and internal gear ring 22 in the positioning assembly, the mounting ring 9 containing the dustproof lens 10 is firmly fixed in the second through hole 7. The lens will not shift or fall off due to vibration or external force during equipment operation, ensuring the stability of beam transmission and focusing, improving cutting quality. The operation steps are simple; maintenance personnel can quickly disassemble and install the dustproof lens 10 by simply pulling the ring 18 and rotating the internal gear ring 22 without the need for additional tools, making maintenance convenient.

[0035] Working principle: In use, when installing the dustproof lens 10, first remove the bolt 5, pull the pull plate 3 and the support plate 4 from the mounting groove 2, and use the positioning component to pull the ring 18 through the connecting rod 19 to lift the mounting strip 15, mounting rod 14 and insert rod 16. The mounting rod 14 will slide upward inside the receiving groove 13, the fixing ring 20 and the gear 21, and the spring will be compressed until the insert hole 16 is misaligned with the top of the support plate 4. Then rotate the internal gear ring 22. Utilizing the meshing relationship between the internal gear ring 22 and the gear 21, the gear 21 will then rotate. Utilizing the action of the keyway 23, the mounting rod 14 will rotate, causing the mounting strip 15 and insert rod 16 to rotate and become misaligned with the second through hole 7. Then, the mounting ring 9 containing the dustproof lens 10 is placed into the groove. Press the rubber ring 11 into the groove 8 in the second through hole 7, and initially fix the mounting ring 9 with the dustproof lens 10 in the second through hole 6. Then rotate the inner gear ring 22 in the opposite direction, driving the mounting rod 14, mounting strip 15 and insertion rod 16 to rotate until the insertion rod 16 corresponds to the insertion hole 24. Under the elastic force of the spring, the insertion rod 16 enters the insertion hole 24, and the pressing block 17 presses against the top of the mounting ring 9, thereby installing the dustproof lens 10 in the second through hole 7. Finally, put the support plate 4 with the lens back into the mounting groove 2, and use the bolts 5 to fix the mounting block 1 and the pull plate 3. Then install the structure on the laser cutting head. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0036] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.

Claims

1. A dustproof focusing lens assembly for an ultrafast laser processing head, comprising a mounting block (1), characterized in that, The mounting block (1) has a mounting groove (2) on its top. A pull plate (3) is provided on one side of the mounting block (1). A support plate (4) is fixedly connected to one side of the pull plate (3). The outer side of the support plate (4) is slidably connected to the inside of the mounting groove (2). A bolt (5) is provided between the mounting block (1) and the pull plate (3). A first through hole (6) is provided at the bottom of the inner wall of the mounting groove (2). A second through hole (7) is provided inside the support plate (4). A mounting ring (9) is slidably connected inside the second through hole (7). A dustproof lens (10) is provided inside the mounting ring (9). A groove (8) is provided inside the second through hole (7) and the outer side of the mounting ring (9). A rubber ring (11) is provided inside the groove (8). A positioning component is provided on the top of the support plate (4). The positioning component is used to fix the mounting ring (9).

2. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 1, characterized in that, The positioning component includes an annular groove (12), which is opened on the top of the tray (4). The bottom of the inner wall of the annular groove (12) is provided with equidistant grooves (13). An installation rod (14) is slidably connected inside the groove (13). The top of the installation rod (14) extends to the top of the tray (4) and is fixedly connected to an installation strip (15). The bottom of the installation strip (15) is fixedly connected to an insert rod (16).

3. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 2, characterized in that, The top of the mounting ring (9) is provided with a socket (24), the outer side of the plug rod (16) is slidably connected to the inside of the socket (24), and two compression blocks (17) are fixedly connected to the outer side of the plug rod (16). The bottom of the two compression blocks (17) abuts against the top of the mounting ring (9).

4. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 3, characterized in that, The top of the mounting strip (15) is provided with a ring (18), and a connecting rod (19) is equidistantly slidably connected inside the ring (18). The bottom of the connecting rod (19) is threadedly connected to the top of the mounting strip (15).

5. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 4, characterized in that, A fixed ring (20) is slidably connected inside the annular groove (12). The inside of the fixed ring (20) is slidably connected to the outside of the mounting rod (14). A gear (21) and an internal gear ring (22) are rotatably connected to the top of the fixed ring (20). The gear (21) meshes with the internal gear ring (22).

6. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 5, characterized in that, The inner side of the gear (21) is slidably connected to the outer side of the mounting rod (14), and a keyway (23) is provided on the outer side of the mounting rod (14). A flat key is fixedly connected inside the gear (21).

7. The dustproof focusing lens assembly of an ultrafast laser processing head according to claim 6, characterized in that, The fixing ring (20) is fixed to the annular groove (12) by screws, and a spring is provided at the bottom of the fixing ring (20) and outside the mounting rod (14).

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