A focusing lens assembly, a laser head mechanism, and laser processing equipment thereof.

Abstract

This utility model discloses a focusing lens assembly, a laser head mechanism, and a laser processing device thereof. The focusing lens assembly includes: a focusing lens base having a laser inlet and a laser outlet arranged opposite each other, forming an optical path for the laser beam between the laser inlet and the laser outlet; and a focusing lens mounting base detachably connected to the focusing lens base, wherein there are at least two focusing lens mounting bases, and the focusing lenses of different focusing lens mounting bases have different focusing effects; wherein, when the focusing lens mounting base is connected to the focusing lens base, the focusing lens of the focusing lens mounting base is located in the optical path. The focusing lens assembly provided by this utility model, by switching the focusing lens mounting base connected to the focusing lens base, allows focusing lenses with different focusing effects to be located in the optical path to achieve different focusing effects, thereby realizing the corresponding adjustment of the laser beam focusing effect during different laser operations on the product and improving the laser operation effect.

Description

Technical Field

[0001] This utility model relates to the field of laser equipment technology, and in particular to a focusing lens assembly, a laser head mechanism and its laser processing equipment. Background Technology

[0002] During laser processing, a focusing lens is used to focus the laser beam. Taking a laser cutting machine as an example, its processing operations can include cutting and engraving.

[0003] Different laser operations (such as laser cutting or laser engraving) require different focal lengths. For example, at the same power, to cut thicker plates and achieve better cutting results, a longer focal length and greater depth of focus are needed. Conversely, for engraving, to achieve finer engraving and better results, a shorter focal length, shallower depth of focus, and smaller spot size are required. Therefore, using a laser processing device with the same focusing lens for different laser operations will affect the laser operation results on the product.

[0004] Therefore, how to improve the laser operation effect is a problem that urgently needs to be solved by those in this technical field. Utility Model Content

[0005] In view of this, the present invention provides a focusing lens assembly to improve laser operation performance. The present invention also provides a laser head mechanism having the above-mentioned focusing lens assembly and a laser processing device thereof.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A focusing lens assembly, comprising:

[0008] A focusing lens base, wherein the focusing lens base has a laser inlet and a laser outlet arranged opposite to each other, and a laser beam optical path is formed between the laser inlet and the laser outlet;

[0009] A focusing lens mounting base is detachably connected to the focusing lens base. There are at least two focusing lens mounting bases, and the focusing lenses of different focusing lens mounting bases have different focusing effects.

[0010] in,

[0011] With the focusing lens mount connected to the focusing lens base, the focusing lens of the focusing lens mount is located in the optical path.

[0012] Optionally, in the above-described focusing lens assembly, the focal lengths of the focusing lenses in different focusing lens mounts are different.

[0013] Optionally, in the above-described focusing lens assembly, the focusing lens mounting base includes a mounting plate detachably connected to the focusing lens base and a lens mount connected to the mounting plate, and the focusing lens is mounted on the lens mount;

[0014] The distance between the lens mount and the laser exit varies in different focusing lens mounts.

[0015] Optionally, in the above-described focusing lens assembly, the focusing lens base has a receiving cavity, and both the laser inlet and the laser outlet are connected to the receiving cavity;

[0016] With the mounting plate connected to the focusing lens base, the lens holder is located within the receiving cavity, such that the focusing lens mounted on the lens holder is positioned between the laser inlet and the laser outlet.

[0017] Optionally, in the above-described focusing lens assembly, the inner wall of the receiving cavity has an insertion groove;

[0018] With the mounting plate connected to the focusing lens base, the lens holder is engaged with the insertion slot.

[0019] Optionally, in the above-described focusing lens assembly, the focusing lens mounting base further includes a gasket and a pressure ring; the pressure ring is detachably connected to the lens mount and is used to restrict the separation of the focusing lens from the lens mount, and the gasket is located between the pressure ring and the focusing lens;

[0020] And / or, the mounting plate has a positioning hole, and the focusing lens base has a positioning pin that mates with the positioning hole, the positioning pin and the positioning hole forming a guide structure that guides the mounting plate and the focusing lens base to their installation positions.

[0021] Optionally, in the above-described focusing lens assembly, the focusing lens base and the focusing lens mounting base are detachably connected via a connecting component;

[0022] The connection component includes at least one of the following:

[0023] A magnetic attraction assembly, comprising a first magnetic attraction part disposed on the focusing lens base and a second magnetic attraction part disposed on the focusing lens mounting base, wherein the first magnetic attraction part and the second magnetic attraction part have a magnetic attraction force;

[0024] A positioning component, comprising an elastic telescopic structure disposed on the focusing lens base and a connecting groove disposed on the focusing lens mounting base, the focusing lens base having a mounting hole, the elastic telescopic structure comprising a connector detachable from the mounting hole, a ball for engaging with the connecting groove, and an elastic connector connecting the connector and the ball, wherein the ball is at least partially embedded in the connecting groove under the elastic force of the elastic connector.

[0025] A bolted connector that detachably connects the focusing lens base to the focusing lens mounting base.

[0026] This utility model also provides a laser head mechanism, including:

[0027] Optical components for transmitting laser beams;

[0028] An air nozzle having an air inlet for blowing air;

[0029] A trachet for supplying gas to the air nozzle;

[0030] The optical component includes a focusing lens assembly, which is a focusing lens assembly as described in any of the preceding claims.

[0031] Optionally, the laser head mechanism described above also includes:

[0032] A sleeve mechanism connecting the air nozzle and the air tube, the sleeve mechanism being coaxially arranged with the air nozzle, the laser beam being able to pass through the sleeve mechanism and be emitted from the air nozzle, and the axial length of the sleeve mechanism being adjustable;

[0033] An adjustment component for adjusting the axial length of the sleeve mechanism;

[0034] in,

[0035] The focusing lens assembly is connected between the sleeve mechanism and the air nozzle, and the drive end of the adjustment assembly is connected to the focusing lens assembly.

[0036] This utility model also provides a laser processing device, including a device body and a laser head mechanism, wherein the laser head mechanism is the laser head mechanism described above.

[0037] As can be seen from the above technical solution, the focusing lens assembly provided by this utility model has at least two focusing lens mounting seats that are detachably connected to the focusing lens base, and the focusing lenses of different focusing lens mounting seats have different focusing effects. Therefore, by switching the focusing lens mounting seats connected to the focusing lens base, the focusing lens located between the laser inlet and the laser outlet can be switched, so that the focusing lenses with different focusing effects are located in the optical path between the laser inlet and the laser outlet to achieve different focusing effects. This enables the corresponding adjustment of the laser beam focusing effect when the laser instrument performs different laser operations on the product, thereby improving the laser operation effect.

[0038] The laser head mechanism and laser processing equipment provided by this utility model have the aforementioned focusing lens assembly. Since the focusing lens assembly has the aforementioned technical effects, the laser head mechanism and laser processing equipment having the aforementioned focusing lens assembly should also have the same technical effects, and will not be described in detail here. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a schematic diagram of the laser head mechanism provided in an embodiment of the present invention;

[0041] Figure 2 This is a schematic diagram of the focusing lens assembly provided in an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of the first focusing lens mounting base provided in an embodiment of this utility model;

[0043] Figure 4 This is a schematic diagram of the structure of the second focusing lens mounting base provided in an embodiment of the present invention;

[0044] Figure 5 A schematic diagram of the structure of the third focusing lens mounting base provided in an embodiment of this utility model.

[0045] in,

[0046] Optical component-10, adjustment component-20, air tube-100, window mirror component-200, drive component-300, component mounting base-400, reflector component-500, mounting bracket-600, sleeve mechanism-700, focusing lens component-800, air nozzle-900, adapter base-1000, base plate-1100, guide rail component-1200, focusing lens base-810, positioning pin-811, insertion slot-812, laser inlet-813, laser outlet-814, mounting hole-815, receiving cavity-816, focusing lens mounting base-820, first focusing lens Mounting base - 8201, second focusing lens mounting base - 8202, third focusing lens mounting base - 8203, mounting plate - 821, connecting slide - 822, first lens holder - 8231, long focal length focusing lens - 8232, second lens holder - 8233, medium focal length focusing lens - 8234, third lens holder - 8235, short focal length focusing lens - 8236, gasket - 824, pressure ring - 825, second magnetic suction part - 826, positioning hole - 827, elastic telescopic structure - 830, connector - 831, elastic connector - 832, ball bearing - 833, first magnetic suction part - 840. Detailed Implementation

[0047] This invention discloses a focusing lens assembly to improve laser operation performance. This invention also provides a laser head mechanism with the aforementioned focusing lens assembly and a laser processing device thereof.

[0048] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0049] like Figure 1 and Figure 2 As shown, this embodiment of the present invention provides a focusing lens assembly, including a focusing lens base 810 and a focusing lens mounting seat 820 detachably connected to the focusing lens base 810. The focusing lens base 810 has a laser inlet 813 and a laser outlet 814 disposed opposite to each other, forming an optical path for a laser beam between the laser inlet 813 and the laser outlet 814; there are at least two focusing lens mounting seats 820, and the focusing lenses of different focusing lens mounting seats 820 have different focusing effects; wherein, when the focusing lens mounting seat 820 is connected to the focusing lens base 810, the focusing lens of the focusing lens mounting seat 820 is located in the optical path.

[0050] In the focusing lens assembly provided in this embodiment of the utility model, since there are at least two focusing lens mounting seats 820 that are detachably connected to the focusing lens base 810, and the focusing lenses of different focusing lens mounting seats 820 have different focusing effects, the focusing lens located between the laser inlet 813 and the laser outlet 814 can be switched by switching the focusing lens mounting seats 820 connected to the focusing lens base 810. This allows focusing lenses with different focusing effects to be located in the optical path between the laser inlet 813 and the laser outlet 814, so as to achieve different focusing effects. This enables the laser beam focusing effect to be adjusted accordingly when the laser instrument performs different laser operations on the product, thereby improving the laser operation effect.

[0051] The laser instrument can be a laser processing device or other laser instrument; no specific restrictions are made here.

[0052] In some embodiments, the focal lengths of the focusing lenses in different focusing lens mounts 820 are different. That is, by setting focusing lenses with different focal lengths in different focusing lens mounts 820, the focusing lenses in different focusing lens mounts 820 have different focusing effects. The focusing lenses in different focusing lens mounts 820 can also be different lens types (such as spherical lenses, aspherical lenses, or cylindrical lenses); or the focusing lenses in different focusing lens mounts 820 can be made of different materials to have different refractive indices; or the focusing lenses in different focusing lens mounts 820 can have different coatings, etc. No specific limitations are imposed here, as long as the focusing lenses in different focusing lens mounts 820 have different focusing effects to meet the needs of laser instruments for performing different laser operations on the product.

[0053] Understandably, the focal point formed by a laser beam through a short focal length focusing lens is closer to the focusing lens, while the focal point formed by a laser beam through a long focal length focusing lens is farther from the focusing lens. Therefore, to further optimize the effect of the laser beam on the product during laser operation, the positions of focusing lenses with different focal lengths can be adjusted to adapt to the position of the focal point applied to the product.

[0054] In some embodiments, the focusing lens mount 820 includes a mounting plate 821 detachably connected to the focusing lens base 810 and a lens mount connected to the mounting plate 821, and the focusing lens is mounted on the lens mount; the distance between the lens mount and the laser exit 814 is different in different focusing lens mounts 820.

[0055] like Figure 2 As shown, taking three focusing lens mounts 820 as an example, they are the first focusing lens mount 8201, the second focusing lens mount 8202, and the third focusing lens mount 8203.

[0056] like Figure 2 and Figure 3As shown, the first focusing lens mount 8201 can be a long focal length focusing lens 8232. The mounting plate 821 of the first focusing lens mount 8201 has a first lens holder 8231. The long focal length focusing lens 8232 is mounted on the first lens holder 8231, which is located at the upper end of the mounting plate 821. Since the laser inlet 813 of the focusing lens base 810 is located at the upper end of the focusing lens base 810 and the laser outlet 814 is located at the lower end of the focusing lens base 810, when the mounting plate 821 of the first focusing lens mount 8201 is connected to the focusing lens base 810, the distance between the first lens holder 8231 and the laser outlet 814 is L1, resulting in the long focal length focusing lens 8232 being located at a relatively far distance from the laser outlet 814.

[0057] like Figure 2 and Figure 4 As shown, the second focusing lens mount 8202 can be a medium focal length focusing lens 8234. The mounting plate 821 of the second focusing lens mount 8202 has a second lens holder 8233. The medium focal length focusing lens 8234 is mounted on the second lens holder 8233, which is located in the middle of the mounting plate 821. Since the laser inlet 813 of the focusing lens base 810 is located at the upper end of the focusing lens base 810 and the laser outlet 814 is located at the lower end of the focusing lens base 810, when the mounting plate 821 of the second focusing lens mount 8202 is connected to the focusing lens base 810, the distance between the second lens holder 8233 and the laser outlet 814 is L2, where L2 is less than L1. This makes the medium focal length focusing lens 8234 closer to the laser outlet 814 than the distance between the medium focal length focusing lens 8232 and the laser outlet 814.

[0058] like Figure 2 and Figure 5 As shown, the third focusing lens mount 8203 can be a short focal length focusing lens 8236. The mounting plate 821 of the third focusing lens mount 8203 has a third lens holder 8235. The short focal length focusing lens 8236 is mounted on the third lens holder 8235, which is located at the lower end of the mounting plate 821. Since the laser inlet 813 of the focusing lens base 810 is located at the upper end of the focusing lens base 810 and the laser outlet 814 is located at the lower end of the focusing lens base 810, when the mounting plate 821 of the third focusing lens mount 8203 is connected to the focusing lens base 810, the distance between the third lens holder 8235 and the laser outlet 814 is L3. L3 is less than L2 and less than L1, making the short focal length focusing lens 8236 relatively close to the laser outlet 814.

[0059] The first focusing lens mount 8201, the second focusing lens mount 8202, and the third focusing lens mount 8203 correspond to long focal length, medium focal length, and short focal length, respectively. This allows for the use of a long focal length during cutting and a short focal length during engraving to achieve better cutting and engraving results. If the user does not like frequent switching, they can also use a medium focal length for cutting and engraving for a longer period of time.

[0060] Of course, it is also possible to have only any two of the first focusing lens mount 8201, the second focusing lens mount 8202 and the third focusing lens mount 8203, or the number of focusing lens mounts 820 may be greater than three and all have different focal lengths.

[0061] To prevent external factors from interfering with the optical path, the focusing lens base 810 has a receiving cavity 816, through which both the laser inlet 813 and the laser outlet 814 communicate. With the mounting plate 821 connected to the focusing lens base 810, the lens holder is located within the receiving cavity 816, positioning the focusing lens mounted on it between the laser inlet 813 and the laser outlet 814. The opening of the receiving cavity 816 in the focusing lens base 810 can be closed or partially closed by the mounting plate 821, allowing the focusing lens to remain within the cavity 816. This prevents external dust or impurities from affecting the optical path between the focusing lens and the laser inlet 813 and laser outlet 814, thus improving the focusing effect.

[0062] To further improve the connection stability between the focusing lens base 810 and the focusing lens mounting base 820, the inner wall of the receiving cavity 816 has a insertion groove 812; when the mounting plate 821 is connected to the focusing lens base 810, the lens holder is inserted into the insertion groove 812.

[0063] Multiple insertion slots 812 can be provided on the inner wall of the receiving cavity 816 along the height direction of the focusing lens base 810 (the arrangement direction of the upper end and the lower end of the focusing lens base 810) to facilitate matching the lens holders of different focusing lens mounting bases 820.

[0064] Taking a focusing lens mounting base 820 with three components, namely a first focusing lens mounting base 8201, a second focusing lens mounting base 8202, and a third focusing lens mounting base 8203, as an example, since the first lens holder 8231 of the first focusing lens mounting base 8201 is located at the upper end of the mounting plate 821, the second lens holder 8233 of the second focusing lens mounting base 8202 is located at the middle position of the mounting plate 821, and the third lens holder 8235 of the third focusing lens mounting base 8203 is located at the lower end of the mounting plate 821, three insertion slots 812 arranged along the height direction of the focusing lens base 810 can be provided on the inner wall of the receiving cavity 816 to facilitate the allocation and matching of the first lens holder 8231, the second lens holder 8233, and the third lens holder 8235.

[0065] To facilitate the installation stability of the focusing lens, the focusing lens mounting base 820 also includes a gasket 824 and a retaining ring 825; the retaining ring 825 is detachably connected to the lens holder and is used to limit the separation of the focusing lens from the lens holder, and the gasket 824 is located between the retaining ring 825 and the focusing lens;

[0066] In some embodiments, the mounting plate 821 has a positioning hole 827, and the focusing lens base 810 has a positioning pin 811 that mates with the positioning hole 827. The positioning pin 811 and the positioning hole 827 cooperate to form a guiding structure that guides the mounting plate 821 and the focusing lens base 810 to their installation positions. That is, during the connection process between the focusing lens base 810 and the focusing lens mounting seat 820, the positioning pin 811 can mate with the positioning hole 827. Under the guiding effect of the guiding structure formed by the positioning pin 811 and the positioning hole 827, the focusing lens base 810 and the focusing lens mounting seat 820 are brought closer together, so that the focusing lens is located in the optical path between the laser inlet 813 and the laser outlet 814, avoiding the focusing lens from shifting and affecting the focusing effect. The guiding structure formed by the positioning pin 811 and the positioning hole 827 can also guide the lens holder to be inserted into the insertion slot 812.

[0067] The number of locating pins 811 can be multiple (e.g., two) and they can be set asymmetrically to prevent mistaken identification.

[0068] To facilitate quick and easy switching of the focusing lens mount 820, the focusing lens base 810 and the focusing lens mount 820 are detachably connected via a connecting assembly.

[0069] The connecting assembly may include a magnetic chuck assembly, which includes a first magnetic chuck portion 840 disposed on the focusing lens base 810 and a second magnetic chuck portion 826 disposed on the focusing lens mounting base 820. The first magnetic chuck portion 840 and the second magnetic chuck portion 826 have a magnetic attraction force. That is, the focusing lens base 810 and the focusing lens mounting base 820 can be connected by the magnetic attraction force between the first magnetic chuck portion 840 and the second magnetic chuck portion 826. By applying external force (hand or tool) to the focusing lens mounting base 820, the magnetic attraction force is overcome, causing the first magnetic chuck portion 840 and the second magnetic chuck portion 826 to separate, thereby enabling the focusing lens mounting base 820 to be replaced.

[0070] The number of magnetic assemblies can be multiple and arranged along the circumference of the mounting plate 821. For example, in an embodiment where the mounting plate 821 is square, the number of magnetic assemblies can be four and they are correspondingly arranged at the four corners of the mounting plate 821.

[0071] The connecting assembly may include a positioning assembly, which includes an elastic telescopic structure 830 disposed on the focusing lens base 810 and a connecting groove 822 disposed on the focusing lens mounting base 820. The focusing lens base 810 has a mounting hole 815. The elastic telescopic structure 830 includes a connector 831 detachably connected to the mounting hole 815, a ball bearing 833 for engaging with the connecting groove 822, and an elastic connector 832 connecting the connector 831 and the ball bearing 833. Under the elastic force of the elastic connector 832, the ball bearing 833 is at least partially embedded in the connecting groove 822. That is, the focusing lens base 810 and the focusing lens mounting base 820 can be connected by the ball bearing 833 engaging with the connecting groove 822. When an external force (hand or tool) is applied to the focusing lens mounting base 820, the ball bearing 833 overcomes the elastic force and slides relative to the connecting groove 822 and separates, thereby enabling the focusing lens mounting base 820 to be replaced.

[0072] Understandably, the ball bearing 833 can partially enter the receiving cavity 816 of the focusing lens base 810 through the mounting hole 815, so as to cooperate and be locked with the connecting groove 822 extending into the receiving cavity 816. Furthermore, the ball bearing 833 is confined within the mounting hole 815, preventing it from falling out. The connector 831 can be a screw, and the mounting hole 815 can be a threaded hole adapted to the screw. Since the ball bearing 833 is confined within the mounting hole 815, the compression dimension of the elastic connector 832 can be adjusted by adjusting the distance between the screw and the threaded hole, thereby adjusting the magnitude of the elastic force and ultimately adjusting the connection strength between the focusing lens base 810 and the focusing lens mount 820.

[0073] The connecting groove 822 can be a V-shaped groove, with shallower depths at both ends and a deeper depth in the middle. The orientation of the two ends of the V-shaped groove can be the direction in which the focusing lens base 810 and the focusing lens mount 820 move closer and further apart during the replacement of the focusing lens mount 820. Furthermore, the connecting groove 822 can be set independently relative to the lens mount (such as the first lens mount 8231 and the third lens mount 8235), or the connecting groove 822 can be set on the lens mount (such as the second lens mount 8233).

[0074] The connecting assembly may also include bolted connectors that detachably connect the focusing lens base 810 and the focusing lens mount 820. The connection and separation of the focusing lens base 810 and the focusing lens mount 820 are achieved by tightening the bolted connectors.

[0075] The connecting components of the focusing lens assembly may include at least one or more of the aforementioned magnetic components, positioning components, and bolted connectors (e.g., including magnetic components and positioning components, or including bolted connectors, etc.), without specific limitations and all are within the scope of protection. Of course, the connecting components of the focusing lens assembly may also include other structures, such as snap-fit ​​connecting components or adhesive connecting components, etc.

[0076] This utility model embodiment also provides a laser head mechanism, including an optical component 10, an air nozzle 900, and an air tube 100. The optical component 10 is used to transmit a laser beam; the air nozzle 900 has an air inlet for blowing air; the air tube 100 is used to supply gas to the air nozzle 900; wherein, the optical component 10 includes a focusing lens assembly 800, and the focusing lens assembly 800 is any of the focusing lens assemblies described above.

[0077] Since the aforementioned focusing lens assembly has the aforementioned technical effects, the laser head mechanism with the aforementioned focusing lens assembly should also have the same technical effects, and will not be described in detail here.

[0078] To reduce the risk of the air tube 100 being burned due to excessive temperature of the air nozzle 900, in some embodiments, the laser head mechanism further includes a sleeve mechanism 700 connecting the air nozzle 900 and the air tube 100, and an adjustment component 20 for adjusting the axial length of the sleeve mechanism 700. The sleeve mechanism 700 and the air nozzle 900 are coaxially arranged, allowing the laser beam to pass through the sleeve mechanism 700 and exit from the air nozzle 900. The axial length of the sleeve mechanism 700 is adjustable. A focusing lens assembly 800 is connected between the sleeve mechanism 700 and the air nozzle 900, and the drive end of the adjustment component 20 is connected to the focusing lens assembly 800.

[0079] The air pipe 100 can be connected to an external air supply device. Since the sleeve mechanism 700 connects the air nozzle 900 and the air pipe 100, the gas supplied by the air pipe 100 can enter the air nozzle 900 through the sleeve mechanism 700 and be ejected from the nozzle. Because the sleeve mechanism 700 and the air nozzle 900 are coaxially arranged, the laser beam transmitted by the optical component 10 can be emitted from the air nozzle 900 through the sleeve mechanism 700. Furthermore, the gas ejected from the nozzle can be coaxially arranged with the laser beam emitted from the nozzle 900, and together they act on the workpiece to perform corresponding laser operations (such as cutting). Moreover, the axial length of the sleeve mechanism 700 can be adjusted by the adjustment component 20 to change the position of the air nozzle 900 (such as the up-and-down reciprocating motion of the laser head mechanism), thereby adapting to the workpiece position requiring laser operations (such as cutting). Since the sleeve mechanism 700 connects the air nozzle 900 and the air pipe 100, the air pipe 100 can be kept away from the location of the air nozzle 900, thereby reducing the risk of melting and damage to the air pipe 100 in the event of high air nozzle temperature or even fire.

[0080] Since the focusing lens assembly 800 is connected between the sleeve mechanism 700 and the air nozzle 900, the focusing lens assembly 800 has at least one channel inside that connects the sleeve mechanism 700 and the air nozzle 900 for gas to pass through. In some embodiments, the laser inlet 813 can be an air inlet connected to the sleeve mechanism 700, and the laser outlet 814 can be an air outlet connected to the air nozzle 900. The receiving cavity 816, under the closure of the mounting plate 821, can form a chamber with the laser inlet 813 and the laser outlet 814, so that gas can enter the chamber from the laser inlet 813 and enter the air nozzle 900 from the laser outlet 814.

[0081] The optical component 10 may further include a component mounting base 400, a window mirror assembly 200, and a reflector assembly 500. The component mounting base 400 is located at the end of the sleeve mechanism 700 facing away from the air nozzle 900 and has a cavity communicating with the interior of the sleeve mechanism 700. The air pipe 100 communicates with the cavity. The window mirror assembly 200 is located on the component mounting base 400, and the laser beam can enter the cavity through the window mirror assembly 200. The reflector assembly 500 is located on the component mounting base 400 and can adjust the direction of the laser beam entering the cavity so that it exits along the axial direction of the sleeve mechanism 700. The focusing lens assembly 800 is connected between the sleeve mechanism 700 and the air nozzle 900, and the sleeve mechanism 700 and the air nozzle 900 are coaxially arranged. During the transmission of the laser beam by the optical component 10, the laser beam can enter the cavity of the component mounting base 400 through the window mirror component 200, be reflected by the reflector component 500, be transmitted along the axial direction of the sleeve mechanism 700, and be emitted from the nozzle 900. Since the air pipe 100 is connected to the cavity, the gas supplied by the air pipe 100 can be transmitted to the nozzle 900 through the sleeve mechanism 700. Because the focusing lens component 800 is connected between the sleeve mechanism 700 and the nozzle 900, the focusing effect of the laser beam emitted from the nozzle 900 is effectively improved.

[0082] The adjustment assembly 20 may include a mounting base 600, a drive component 300, an adapter 1000, and a base plate 1100. The mounting base 600 is used to connect to the main body of the laser processing equipment and serves as a component connecting the laser head assembly to the main body. The mounting base 600 is connected to the component mounting base 400. The drive component 300 is disposed on the mounting base 600 and may be a motor, cylinder, or hydraulic cylinder, etc. The adapter 1000 connects the drive end of the drive component 300 to the focusing lens assembly 800. The base plate 1100 is connected to the mounting base 600 and has a guide rail assembly 1200 that slides with the adapter 1000. The guide rail assembly 1200 extends in the axial direction of the sleeve mechanism 700. The base plate 1100 may be part of the mounting base 600. The sliding stability of the adapter 1000 can be further improved by guiding the adapter 1000 to slide through the guide rail assembly 1200. Alternatively, the base plate 1100 and guide rail assembly 1200 can be omitted, and the focusing lens assembly 800 can be moved directly by the driving end of the driving component 300. Since one end of the sleeve mechanism 700 is connected to the mounting base 600 through the component mounting base 400, the relative position of the other end of the sleeve mechanism 700 and the mounting base 600 can be adjusted during the movement of the focusing lens assembly 800, thereby allowing the sleeve mechanism 700 to move relative to each other and achieve adjustment of its axial length.

[0083] The adapter 1000 can also connect the drive end of the drive component 300 to the lower end of the sleeve mechanism 700 or the air nozzle 900, thus enabling the sleeve mechanism 700 to be adjusted in axial length.

[0084] This utility model also provides a laser processing device, including a device body and a laser head mechanism, wherein the laser head mechanism is any of the laser head mechanisms described above.

[0085] In some embodiments, the device body includes a housing and a cover rotatably connected to the housing. A processing space is provided within the device body, and the cover can be opened or closed over the processing space. Users can open the cover to insert a workpiece to be processed or to remove a processed workpiece. The processing space also includes an X-axis motion track and a Y-axis motion track. A laser head mechanism is movably mounted on the X-axis motion track, and the X-axis motion track is movably mounted on the Y-axis motion track. The laser head mechanism moves within the processing space via the X-axis and Y-axis motion tracks and outputs a laser beam to perform laser processing on the workpiece. Since the laser head mechanism described above has the aforementioned technical effects, laser processing equipment with the aforementioned laser head mechanism should also have the same technical effects, and will not be described in detail here.

[0086] In some embodiments, the laser processing equipment may be a laser cutting machine, a laser welding machine, a laser marking machine, or a laser engraving machine, etc., without specific limitations and all are within the scope of protection.

[0087] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0088] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A focusing lens assembly, characterized in that, include: A focusing lens base, wherein the focusing lens base has a laser inlet and a laser outlet arranged opposite to each other, and a laser beam optical path is formed between the laser inlet and the laser outlet; A focusing lens mounting base is detachably connected to the focusing lens base. There are at least two focusing lens mounting bases, and the focusing lenses of different focusing lens mounting bases have different focusing effects. in, With the focusing lens mount connected to the focusing lens base, the focusing lens of the focusing lens mount is located in the optical path.

2. The focusing lens assembly as described in claim 1, characterized in that, The focal lengths of the focusing lenses in different focusing lens mounts are different.

3. The focusing lens assembly as described in claim 2, characterized in that, The focusing lens mounting base includes a mounting plate detachably connected to the focusing lens base and a lens mount connected to the mounting plate, wherein the focusing lens is mounted on the lens mount; The distance between the lens mount and the laser exit varies in different focusing lens mounts.

4. The focusing lens assembly as described in claim 3, characterized in that, The focusing lens base has a receiving cavity, and both the laser inlet and the laser outlet are connected to the receiving cavity; With the mounting plate connected to the focusing lens base, the lens holder is located within the receiving cavity, such that the focusing lens mounted on the lens holder is positioned between the laser inlet and the laser outlet.

5. The focusing lens assembly as described in claim 4, characterized in that, The inner wall of the receiving cavity has a insertion groove; With the mounting plate connected to the focusing lens base, the lens holder is engaged with the insertion slot.

6. The focusing lens assembly as described in claim 3, characterized in that, The focusing lens mounting base also includes a gasket and a pressure ring; the pressure ring is detachably connected to the lens mount and is used to restrict the separation of the focusing lens from the lens mount, and the gasket is located between the pressure ring and the focusing lens; And / or, the mounting plate has a positioning hole, and the focusing lens base has a positioning pin that mates with the positioning hole. The positioning pin and the positioning hole mate to form a guide structure that guides the mounting plate and the focusing lens base to their installation positions.

7. The focusing lens assembly as claimed in claim 1, characterized in that, The focusing lens base and the focusing lens mounting base are detachably connected via a connecting assembly; The connection component includes at least one of the following: A magnetic attraction assembly, comprising a first magnetic attraction part disposed on the focusing lens base and a second magnetic attraction part disposed on the focusing lens mounting base, wherein the first magnetic attraction part and the second magnetic attraction part have a magnetic attraction force; A positioning component, comprising an elastic telescopic structure disposed on the focusing lens base and a connecting groove disposed on the focusing lens mounting base, the focusing lens base having a mounting hole, the elastic telescopic structure comprising a connector detachable from the mounting hole, a ball for engaging with the connecting groove, and an elastic connector connecting the connector and the ball, wherein the ball is at least partially embedded in the connecting groove under the elastic force of the elastic connector. A bolted connector that detachably connects the focusing lens base to the focusing lens mounting base.

8. A laser head mechanism, characterized in that, include: Optical components for transmitting laser beams; An air nozzle having an air inlet for blowing air; A trachet for supplying gas to the air nozzle; The optical component includes a focusing lens assembly, which is the focusing lens assembly as described in any one of claims 1-7.

9. The laser head mechanism as described in claim 8, characterized in that, Also includes: A sleeve mechanism connecting the air nozzle and the air tube, the sleeve mechanism being coaxially arranged with the air nozzle, the laser beam being able to pass through the sleeve mechanism and be emitted from the air nozzle, and the axial length of the sleeve mechanism being adjustable; An adjustment component for adjusting the axial length of the sleeve mechanism; in, The focusing lens assembly is connected between the sleeve mechanism and the air nozzle, and the drive end of the adjustment assembly is connected to the focusing lens assembly.

10. A laser processing device, comprising a device body and a laser head mechanism, characterized in that, The laser head mechanism is the laser head mechanism as described in claim 8 or 9.

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