A laser head assembly and a laser processing apparatus thereof

Abstract

The utility model discloses a laser head assembly and laser processing equipment thereof, laser head assembly includes: optical assembly, optical assembly is used for transmission laser beam, air nozzle, air nozzle has for blowing air's air nozzle mouth, air pipe, air pipe is used for providing gas to air nozzle, the sleeve mechanism of intercommunication air nozzle with air pipe, sleeve mechanism is coaxial with air nozzle arrangement, laser beam can pass through sleeve mechanism and is shot by air nozzle, the axial length of sleeve mechanism is adjustable, adjustment assembly, adjustment assembly is used for adjusting the axial length of sleeve mechanism. The utility model provides laser head assembly, because sleeve mechanism intercommunication air nozzle and air pipe, make air pipe can be far away from the position of air nozzle, thereby reduced under the condition of air nozzle temperature higher even fire to the air pipe cause burning damage.

Description

Technical Field

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

[0002] During laser processing, an air pump continuously blows air into the nozzles to remove molten metal, dirt, or oil films, preventing clogging. For example, a laser cutting machine's processing operations can include cutting and engraving.

[0003] In current laser processing equipment, the air pipe, which is directly connected to the air pump's outlet, is connected to the air nozzle and the focusing lens for air blowing. Because the air nozzle reaches high temperatures during laser cutting and poses a fire risk, the connection point between the air pipe and the nozzle is prone to melting and damage.

[0004] Therefore, how to reduce the risk of tracheal ablation is an urgent problem to be solved by those in this technical field. Utility Model Content

[0005] In view of this, the present invention provides a laser head assembly to reduce the risk of gas tube ablation. The present invention also provides a laser processing device having the above-mentioned laser head assembly.

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

[0007] A laser head assembly, comprising:

[0008] Optical components for transmitting laser beams;

[0009] An air nozzle having an air inlet for blowing air;

[0010] A trachet for supplying gas to the air nozzle;

[0011] 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;

[0012] An adjustment component is provided for adjusting the axial length of the sleeve mechanism.

[0013] Optionally, in the above-mentioned laser head assembly, the sleeve mechanism includes:

[0014] A connecting tube, one end of which is used to communicate with the air outlet of the air pipe;

[0015] A sliding sleeve, one end of which can be sleeved on the other end of the connecting pipe and move along the axial direction of the connecting pipe, the other end of which is used to connect to the air nozzle, the internal pipe of the connecting pipe and the inner cavity of the sliding sleeve form a gas channel connecting the air nozzle and the air pipe.

[0016] A limiting component is provided at the connection between one end of the sliding sleeve and the other end of the connecting pipe to limit the separation of the sliding sleeve from the connecting pipe.

[0017] Optionally, in the above-mentioned laser head assembly, the limiting component includes:

[0018] A collar, wherein the inner wall of the collar forms a sliding channel that slides in cooperation with the outer wall of the sliding sleeve, the sliding channel having a first limiting surface facing the connecting pipe, and one end of the sliding sleeve having a second limiting surface that limits and cooperates with the first limiting surface;

[0019] A connector that connects the collar to the other end of the connecting tube.

[0020] Optionally, in the laser head assembly described above, the first limiting surface and the second limiting surface are inclined away from the connecting tube along the direction close to the center of the collar.

[0021] And / or, along the extension direction of the connecting tube, the outer edge of the first limiting surface is aligned with the inner wall of the connecting tube;

[0022] And / or, along the extension direction of the connecting tube, the outer edge of the second limiting surface is aligned with the inner wall of the connecting tube;

[0023] And / or, the inner wall of the collar slides in contact with the outer wall of the sliding sleeve.

[0024] Optionally, in the laser head assembly described above, the other end of the connecting tube has a first connecting flange, the collar has a second connecting flange connected to the first connecting flange, and the connector connects the first connecting flange and the second connecting flange.

[0025] Optionally, in the laser head assembly described above, the connector can float to connect the first connecting flange and the second connecting flange.

[0026] Optionally, in the laser head assembly described above, a labyrinth seal structure is provided between the first connecting flange and the second connecting flange.

[0027] Optionally, in the above-mentioned laser head assembly, the optical component includes:

[0028] A component mounting base is disposed at one end of the sleeve mechanism opposite to the air nozzle and has a cavity communicating with the interior of the sleeve mechanism, and the air pipe is communicating with the cavity;

[0029] A window mirror assembly is disposed on the component mounting base, through which the laser beam can enter the cavity;

[0030] A reflector assembly disposed on the component mounting base is capable of adjusting the direction of the laser beam entering the cavity so that it exits along the axial direction of the sleeve mechanism;

[0031] A focusing lens assembly, which is connected between the sleeve mechanism and the air nozzle.

[0032] Optionally, in the above-described laser head assembly, the adjustment component includes:

[0033] A mounting base for connecting to the equipment body of a laser processing device, the mounting base being connected to the component mounting base;

[0034] A drive component disposed on the mounting base;

[0035] An adapter, which connects the drive end of the drive component to the focusing lens assembly;

[0036] A base plate connected to the mounting base has a guide rail assembly that slides with the adapter base, the guide rail assembly extending in the axial direction of the sleeve mechanism.

[0037] Optionally, in the laser head assembly described above, the air nozzle is detachably connected to the focusing lens assembly.

[0038] Optionally, in the above-mentioned laser head assembly, the focusing lens assembly has a mounting through hole extending through its interior and exterior on the side facing away from the sleeve mechanism;

[0039] The laser head assembly further includes a connecting component corresponding to the mounting through hole, the connecting component having a first threaded portion;

[0040] The air nozzle has a connecting end facing away from its air outlet, and the connecting end has a second threaded portion that is threadedly connected to the first threaded portion.

[0041] A laser processing device includes a device body and a laser head assembly, wherein the laser head assembly is the laser head assembly described in any of the above claims.

[0042] As can be seen from the above technical solution, the laser head assembly provided by this utility model allows the air pipe to be connected to an external air supply device. Because the sleeve mechanism connects the air nozzle and the air pipe, the gas supplied by the air pipe can enter the air nozzle through the sleeve mechanism and be ejected from the air nozzle opening. Since the sleeve mechanism and the air nozzle are coaxially arranged, the laser beam transmitted by the optical component can be emitted from the air nozzle through the sleeve mechanism. Furthermore, the gas ejected from the air nozzle opening can be coaxially arranged with the laser beam emitted from the air nozzle, and together they act on the workpiece to perform corresponding laser operations (such as cutting). Moreover, the axial length of the sleeve mechanism can be adjusted by the adjustment component to change the position of the air nozzle (such as the up-and-down reciprocating motion of the laser head assembly), thereby adapting to the workpiece position requiring laser operations (such as cutting). Because the sleeve mechanism connects the air nozzle and the air pipe, the air pipe can be moved away from the location of the air nozzle, thereby reducing the risk of melting and damage to the air pipe in the event of high air nozzle temperature or even fire.

[0043] This utility model embodiment also provides a laser processing device, including a device body and a laser head assembly, wherein the laser head assembly is any of the laser head assemblies described above. Since the laser head assembly described above has the aforementioned technical effects, the laser processing device having the aforementioned laser head assembly should also have the same technical effects, and will not be described in detail here. Attached Figure Description

[0044] 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.

[0045] Figure 1 This is a schematic diagram of the structure of the laser head assembly provided in an embodiment of the present invention;

[0046] Figure 2 This is a schematic diagram of the sleeve mechanism provided in an embodiment of the present utility model;

[0047] Figure 3 A cross-sectional view of the sleeve mechanism provided in an embodiment of this utility model;

[0048] Figure 4 This is a schematic diagram of the structure of the air nozzle and focusing lens assembly provided in an embodiment of the present invention.

[0049] in,

[0050] Optical component-1, Adjustment component-2, Limiting component-7, Air tube-10, Window mirror component-20, Drive component-30, Component mounting base-40, Reflector component-50, Mounting base-60, Sleeve mechanism-70, Connecting pipe-71, First connecting flange-711, Collar-72, Second connecting flange-721, Sliding channel-722, First limiting surface-7221, Sealing ring-73, Connector-74, Sliding sleeve-75, Second limiting surface-751, Labyrinth sealing structure-76, Focusing lens component-80, First housing part-81, Second housing part-82, Focusing lens-83, Mounting through hole-84, Connecting component-89, Air nozzle-90, Connecting end-91, Air outlet-92, Rough surface-93, Outer surface-94, Adapter base-100, Base plate-110, Guide rail component-120. Detailed Implementation

[0051] This invention discloses a laser head assembly to reduce the risk of gas tube ablation. This invention also provides a laser processing device having the aforementioned laser head assembly.

[0052] 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.

[0053] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of the present invention provides a laser head assembly, including an optical component 1, an air nozzle 90, an air tube 10, a sleeve mechanism 70, and an adjustment component 2. The optical component 1 is used to transmit a laser beam; the air nozzle 90 has an air inlet for blowing air, and the air tube 10 is used to supply gas to the air nozzle 90; the sleeve mechanism 70 connects the air nozzle 90 and the air tube 10, and the sleeve mechanism 70 and the air nozzle 90 are coaxially arranged, allowing the laser beam to pass through the sleeve mechanism 70 and be emitted from the air nozzle 90; the axial length of the sleeve mechanism 70 is adjustable, and the adjustment component 2 is used to adjust the axial length of the sleeve mechanism 70.

[0054] The laser head assembly provided in this embodiment of the invention allows the air pipe 10 to be connected to an external air supply device. Since the sleeve mechanism 70 connects the air nozzle 90 and the air pipe 10, the gas supplied by the air pipe 10 can enter the air nozzle 90 through the sleeve mechanism 70 and be ejected from the air nozzle opening. Because the sleeve mechanism 70 and the air nozzle 90 are coaxially arranged, the laser beam transmitted by the optical component 1 can be emitted from the air nozzle 90 through the sleeve mechanism 70. Furthermore, the gas ejected from the air nozzle opening can be coaxially arranged with the laser beam emitted from the air nozzle 90, and together they act on the workpiece to perform corresponding laser operations (such as cutting). Moreover, the axial length of the sleeve mechanism 70 can be adjusted by the adjusting component 2 to change the position of the air nozzle 90 (such as the up-and-down reciprocating motion of the laser head assembly), thereby adapting to the workpiece position requiring laser operations (such as cutting). Because the sleeve mechanism 70 connects the air nozzle 90 and the air pipe 10, the air pipe 10 can be moved away from the location of the air nozzle 90, thereby reducing the risk of melting and damage to the air pipe 10 in the event of high air nozzle temperature or even fire.

[0055] The nozzle 90 may have only one channel, so that the gas supplied by the air tube 10 and the laser beam transmitted by the optical component 1 are both located within this channel. The nozzle 90 may have a central hole for the laser beam to be emitted, and the nozzle opening may be an annular structure arranged circumferentially along the central hole, so that the gas is ejected from the nozzle opening and surrounds the laser beam emitted from the central hole. Alternatively, the laser beam may be emitted from the nozzle opening; no specific limitation is made here, and both are within the protection range.

[0056] The sleeve mechanism 70 needs to pass through both the laser beam and the gas. Therefore, during the axial length adjustment of the sleeve mechanism 70, it is necessary to ensure that the sleeve mechanism 70 and the gas nozzle 90 are arranged coaxially.

[0057] In some embodiments, the sleeve mechanism 70 includes a connecting pipe 71, a sliding sleeve 75, and a limiting component 7. The connecting pipe 71 can be a metal pipe (such as an aluminum pipe or a stainless steel pipe). One end of the connecting pipe 71 is used to communicate with the air outlet of the air pipe 10.

[0058] The connecting pipe 71 can be a metal pipe (such as an aluminum pipe or a stainless steel pipe) or a non-metallic pipe (such as silicone or rubber). One end of the sliding sleeve 75 can be fitted onto the other end of the connecting pipe 71 and move axially along the connecting pipe 71. The other end of the sliding sleeve 75 is used to connect with the air nozzle 90. The internal pipe of the connecting pipe 71 and the inner cavity of the sliding sleeve 75 form a gas passage connecting the air nozzle 90 and the air pipe 10. The limiting component 7 is provided at the connection between one end of the sliding sleeve 75 and the other end of the connecting pipe 71 to prevent the sliding sleeve 75 from separating from the connecting pipe 71. That is, the limiting component 7 prevents one end of the sliding sleeve 75 from detaching from the other end of the connecting pipe 71.

[0059] Taking the air nozzle 90 located at the downward end of the laser head assembly as an example, one end of the sliding sleeve 75 can be the upper end of the sliding sleeve 75, and the other end of the sliding sleeve 75 can be the lower end of the sliding sleeve 75. One end of the connecting tube 71 can be the upper end of the connecting tube 71, and the other end of the connecting tube 71 can be the lower end of the connecting tube 71.

[0060] It is understandable that the laser beam can also pass through the gas channel. Since one end of the sliding sleeve 75 is fitted onto the other end of the connecting pipe 71, the axial length of the sleeve mechanism 70 can be adjusted by moving one end of the sliding sleeve 75 along the axial direction of the connecting pipe 71 to adjust the size of the fitted portion of the relative position of the sliding sleeve 75 and the connecting pipe 71 (the size along the axial direction of the connecting pipe 71).

[0061] Of course, the sleeve mechanism 70 can also be made into other structures, such as a retractable threaded tube, etc., which will not be described in detail here and are all within the scope of protection.

[0062] In some embodiments, the limiting component 7 includes a collar 72 and a connector 74. The inner wall of the collar 72 forms a sliding channel 722 that slides in conjunction with the outer wall of the sliding sleeve 75. The sliding channel 722 has a first limiting surface 7221 facing the connecting tube 71. One end of the sliding sleeve 75 has a second limiting surface 751 that limits and engages with the first limiting surface 7221. The connector 74 connects the collar 72 and the other end of the connecting tube 71. When the sliding sleeve 75 moves away from the connecting tube 71 to a predetermined point, the first limiting surface 7221 and the second limiting surface 751 engage to limit the sliding sleeve 75 from moving further away from the connecting tube 71, thereby preventing the sliding sleeve 75 from separating from the connecting tube 71.

[0063] This allows the sliding sleeve 75 to be fitted inside the connecting pipe 71, that is, the second limiting surface 751 can be movably disposed inside the connecting pipe 71, so that the inner diameter of the connecting pipe 71 is at least greater than the diameter of the circular structure where the edge of the second limiting surface 751 is located.

[0064] To improve the limiting effect of the first limiting surface 7221 and the second limiting surface 751, the first limiting surface 7221 is inclined away from the connecting pipe 71 in the direction close to the center of the collar 72; and the second limiting surface 751 is inclined away from the connecting pipe 71 in the direction close to the center of the sliding sleeve 75. This arrangement allows the first limiting surface 7221 to form a tapered hole structure with a large opening at the upper end and a small opening at the lower end, enabling the portion of the sliding sleeve 75 with the second limiting surface 751 to be embedded in the tapered hole structure, thereby improving limiting stability.

[0065] In some embodiments, along the extending direction of the connecting pipe 71, the outer edge of the first limiting surface 7221 is aligned with the inner wall of the connecting pipe 71. This arrangement creates a transition surface structure at the junction of the outer edge of the first limiting surface 7221 and the inner wall of the connecting pipe 71, effectively reducing the degree of wobbling of the sliding sleeve 75 within the connecting pipe 71. Furthermore, along the extending direction of the connecting pipe 71, the outer edge of the second limiting surface 751 is aligned with the inner wall of the connecting pipe 71. That is, the portion of the sliding sleeve 75 with the outer edge of the second limiting surface 751 can slide against the inner wall of the connecting pipe 71, thereby further improving the stability of the sliding sleeve 75 relative to the connecting pipe 71.

[0066] Since the sleeve mechanism 70 not only needs to pass through the laser beam but also needs to transmit gas, it is necessary to ensure the sealing effect of the sleeve mechanism 70. By aligning the outer edge of the second limiting surface 751 with the inner wall of the connecting pipe 71, the sealing performance of the sleeve mechanism 70 can be improved while ensuring the axial length of the sleeve mechanism 70 is adjustable, thereby improving the sealing performance of the gas supply path.

[0067] To further improve sealing performance, the inner wall of the collar 72 is in sliding contact with the outer wall of the sliding sleeve 75.

[0068] For ease of assembly, the other end of the connecting pipe 71 has a first connecting flange 711, and the collar 72 has a second connecting flange 721 connected to the first connecting flange 711. The connector 74 connects the first connecting flange 711 and the second connecting flange 721. During the assembly of the connecting pipe 71 and the sliding sleeve 75, one end of the sliding sleeve 75 can be fitted inside the other end of the connecting pipe 71, and the collar 72 can be fitted outside the sliding sleeve 75 from the other end of the sliding sleeve 75. The first connecting flange 711 and the second connecting flange 721 are connected by the connector 74 to prevent one end of the sliding sleeve 75 from separating from the other end of the connecting pipe 71.

[0069] Among them, the connector 74 can be a bolt or screw or other connector.

[0070] To reduce interference or even jamming between the sliding sleeve 75 and the collar 72 or connecting pipe 71, the connecting piece 74 provides a floating connection between the first connecting flange 711 and the second connecting flange 721. That is, the gap between the first connecting flange 711 and the second connecting flange 721 is adjustable. During the axial length adjustment of the sleeve mechanism 70, the sliding sleeve 75 slides relative to the collar 72 and connecting pipe 71. Because of the floating connection between the first connecting flange 711 and the second connecting flange 721, the relative position of the collar 72 and the connecting pipe 71 can be finely adjusted to accommodate the machining and assembly tolerances of components (such as the sliding sleeve 75, collar 72, or connecting pipe 71), thereby reducing interference, jamming, or jamming between different components.

[0071] Taking the bolt as an example, the bolt stud passes through the mounting hole of the second connecting flange 721 and connects to the threaded hole of the first connecting flange 711. The distance between the bolt head and the first connecting flange 711 is greater than the thickness of the second connecting flange 721 (along the axial dimension of the sleeve mechanism 70), allowing the second connecting flange 721 to move between the bolt head and the first connecting flange 711 for floating adjustment. Alternatively, a sealing ring 73 can be provided between the bolt head and the second connecting flange 721. The sealing ring 73 can be an elastic washer or a non-elastic washer. In the embodiment where the sealing ring 73 is a non-elastic washer, it is necessary to ensure that the distance between the bolt head and the first connecting flange 711 is greater than the sum of the thickness of the second connecting flange 721 and the thickness of the sealing ring 73.

[0072] To further improve the sealing effect, a labyrinth seal structure 76 is provided between the first connecting flange 711 and the second connecting flange 721. That is, when the connecting member 74 floats to connect the first connecting flange 711 and the second connecting flange 721, the labyrinth seal structure 76 can improve the sealing effect between the first connecting flange 711 and the second connecting flange 721.

[0073] An elastic sealing ring of a certain thickness may also be provided between the first connecting flange 711 and the second connecting flange 721.

[0074] In some embodiments, the optical component 1 may include a component mounting base 40, a window mirror assembly 20, a reflector assembly 50, and a focusing lens assembly 80. The component mounting base 40 is disposed at the end of the sleeve mechanism 70 facing away from the air nozzle 90 and has a cavity communicating with the interior of the sleeve mechanism 70. The air pipe 10 communicates with the cavity. The window mirror assembly 20 is disposed on the component mounting base 40, and the laser beam can enter the cavity through the window mirror assembly 20. The reflector assembly 50 is disposed on the component mounting base 40, and the reflector assembly 50 can adjust the direction of the laser beam entering the cavity so that it exits along the axial direction of the sleeve mechanism 70. The focusing lens assembly 80 is connected between the sleeve mechanism 70 and the air nozzle 90, and the sleeve mechanism 70 and the air nozzle 90 are coaxially arranged. During the transmission of the laser beam by the optical component 1, the laser beam can enter the cavity of the component mounting base 40 through the window mirror assembly 20, be transmitted along the axial direction of the sleeve mechanism 70 under the reflection of the reflector assembly 50, and be emitted from the air nozzle 90. Since the duct 10 is connected to the cavity, the gas supplied by the duct 10 can be transmitted to the nozzle 90 through the sleeve mechanism 70. Because the focusing lens assembly 80 is connected between the sleeve mechanism 70 and the nozzle 90, the focusing effect of the laser beam emitted from the nozzle 90 is effectively improved. It is understood that the focusing lens assembly 80 has at least a channel (such as an independently configured pipe structure formed on the inner wall of the housing) connecting the sleeve mechanism 70 and the nozzle 90 for gas passage.

[0075] Alternatively, the air nozzle 90 focusing lens assembly 80 can be connected between the assembly mounting base 40 and the sleeve mechanism 70, which can also achieve the function of transmitting laser beam.

[0076] Furthermore, since the air tube 10 is connected to the cavity of the component mounting base 40, at least a sleeve mechanism 70 and a focusing lens assembly 80 can be provided between the air tube 10 and the air nozzle 90, which further reduces the occurrence of the air tube 10 burning.

[0077] The window mirror assembly 20, the reflector assembly 50, and the air tube 10 can be respectively installed on the left and right sides and the rear side of the component mounting base 40. That is, the window mirror assembly 20 and the reflector assembly 50 are symmetrically installed on both sides of the component mounting base 40, and the front or rear (relative to the front and rear of the operator) between the two sides can be connected to the air tube 10. The window mirror assembly 20, the reflector assembly 50, and the air tube 10 can also be connected to other positions on the component mounting base 40, without limitation, and all are within the protection range.

[0078] The adjustment assembly 2 may include a mounting base 60, a drive component 30, an adapter 100, and a base plate 110. The mounting base 60 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 60 is connected to the component mounting base 40. The drive component 30 is disposed on the mounting base 60 and may be a motor, cylinder, or hydraulic cylinder, etc. The adapter 100 connects the drive end of the drive component 30 to the focusing lens assembly 80. The base plate 110 is connected to the mounting base 60 and has a guide rail assembly 120 that slides with the adapter 100. The guide rail assembly 120 extends in the axial direction of the sleeve mechanism 70. The base plate 110 may be part of the mounting base 60. Guiding the adapter 100 to slide via the guide rail assembly 120 further improves the sliding stability of the adapter 100. Alternatively, the base plate 110 and guide rail assembly 120 can be omitted, and the focusing lens assembly 80 can be moved directly by the driving end of the driving component 30. Since one end of the sleeve mechanism 70 is connected to the mounting base 60 through the component mounting seat 40, the relative position of the other end of the sleeve mechanism 70 and the mounting base 60 can be adjusted during the movement of the focusing lens assembly 80. This allows the sleeve mechanism 70 to move relative to each other, thereby achieving adjustment of its axial length (such as the relative sliding of the connecting pipe 71 and the sliding sleeve 75).

[0079] The adapter 100 can also connect the drive end of the drive component 30 to the sliding sleeve 75 or the air nozzle 90, which can also achieve the adjustment of the sleeve mechanism 70 in axial length.

[0080] Taking the application of laser head assemblies in laser cutting machines as an example, laser head assemblies generally operate in two scenarios: one is the cutting scenario, where a larger airflow is needed to assist in pressurization and chip removal in cutting thicker plates and achieving better cutting results; the other is the engraving scenario, where only a small airflow is needed to assist in smoke removal and avoid contaminating the lens to prevent yellowing. Therefore, the laser has different airflow requirements in different working scenarios. Using a uniform airflow will not achieve better results in both cutting and engraving.

[0081] Therefore, in order to improve the performance in different working scenarios, the air nozzle 90 and the focusing lens assembly 80 can be detachably connected in the laser head assembly provided in this embodiment of the present invention.

[0082] It is understandable that the air nozzle 90 can have the function of converging airflow. For example... Figure 4 As shown, the nozzle 90 can be a conical structure, that is, its inner surface and outer surface 94 form a guide slope. The air outlet 92 of the nozzle 90 is located at its small end, and the air inlet of the nozzle 90 is located at the end of the nozzle 90 opposite to the air outlet 92 and is connected to the focusing lens assembly 80. This allows the airflow passing through the focusing lens assembly 80 to enter through the air inlet of the nozzle 90 and converge to the air outlet 92 of the nozzle 90 under the action of the guide slope. This increases the air pressure of the airflow while keeping the airflow constant, so that the airflow can be concentrated and flow to the processing part, increasing the airflow reaching the processing part. By assisting in pressurization and chip removal, it can achieve the effect of cutting thicker materials, and can also remove sparks generated by friction to avoid fire. It is more suitable for application in cutting scenarios to improve the cutting effect. In the engraving scenario, the air nozzle 90 can be detached from the focusing lens assembly 80, allowing the airflow to pass directly through the focusing lens assembly 80 without being converged by the air nozzle 90 and output to the laser processing position. This reduces the air pressure while maintaining the same airflow rate, causing the airflow to disperse and flow towards the processing area. This avoids the problem of yellowing caused by a large amount of airflow blowing onto the material, thus improving the engraving effect.

[0083] The detachable connection between the air nozzle 90 and the focusing lens assembly 80 can be achieved in various ways, such as snap-fit ​​connection, bolt connection, magnetic connection, or threaded connection.

[0084] In the laser head module, the air nozzle 90 is located below the focusing lens assembly 80. During processing, the laser passes through the window mirror of the window mirror assembly 20, the reflector of the reflector assembly 50, and the sleeve mechanism 70, and is focused on the focusing lens 83 of the focusing lens assembly 80. Then, the air nozzle 90 performs cutting or engraving operations at the focal plane. The airflow assists in processing through the air tube, sleeve mechanism 70, focusing lens assembly 80, and air nozzle 90.

[0085] In some embodiments, the air nozzle 90 is threadedly connected to the focusing lens assembly 80. The focusing lens assembly 80 has a through-hole 84 extending through its interior and exterior on the side facing away from the sleeve mechanism 70, through which airflow can pass. The laser head assembly also includes a connecting member 89 corresponding to the through-hole 84, the connecting member 89 having a first threaded portion. The connecting member 89 can be a nut (such as a copper nut), i.e., the first threaded portion has an internal thread structure.

[0086] The air nozzle 90 has a connecting end 91 facing away from its air outlet 92, and the air inlet of the air nozzle 90 can be located at the connecting end 91. The connecting end 91 has a second threaded portion that is threadedly connected to the first threaded portion. In embodiments where the connecting member 89 is a nut, the second threaded portion has an external thread structure.

[0087] The connecting component 89 can be connected to the side of the focusing lens assembly 80 facing away from the sleeve mechanism 70 (the bottom of the focusing lens assembly 80) by means of welding or other methods. The connecting component 89 can be disposed on the outside of the focusing lens assembly 80.

[0088] Alternatively, the connecting component 89 can be located within the focusing lens assembly 80. This allows the connecting end 91 to pass through the mounting through hole 84 and connect to the connecting component 89 located within the focusing lens assembly 80, while the connecting component 89 cannot move outside the focusing lens assembly 80 through the mounting through hole 84. The housing of the focusing lens assembly 80 can be composed of a first housing portion 81 and a second housing portion 82 that can be detachably connected. With the first housing portion 81 and the second housing portion 82 relatively separated, the connecting component 89 can be placed within the focusing lens assembly 80.

[0089] To facilitate the threaded connection between the air nozzle 90 and the focusing lens assembly 80, a rough surface 93 (such as knurling) can be provided on the air nozzle 90 to facilitate the screwing of the air nozzle 90.

[0090] This utility model embodiment also provides a laser processing device, including a device body and a laser head assembly, wherein the laser head assembly is any of the laser head assemblies described above. Since the laser head assembly described above has the aforementioned technical effects, the laser processing device having the aforementioned laser head assembly should also have the same technical effects, and will not be described in detail here.

[0091] In some embodiments, the device body includes a housing and a cover rotatably connected to the housing. The device body contains a processing space, and the cover can be opened or closed. 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.

[0092] 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.

[0093] 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.

[0094] 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 laser head assembly, 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; 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 is provided for adjusting the axial length of the sleeve mechanism.

2. The laser head assembly as described in claim 1, characterized in that, The sleeve mechanism includes: A connecting tube, one end of which is used to communicate with the air outlet of the air pipe; A sliding sleeve, one end of which can be sleeved on the other end of the connecting pipe and move along the axial direction of the connecting pipe, the other end of which is used to connect to the air nozzle, the internal pipe of the connecting pipe and the inner cavity of the sliding sleeve form a gas channel connecting the air nozzle and the air pipe. A limiting component is provided at the connection between one end of the sliding sleeve and the other end of the connecting pipe to limit the separation of the sliding sleeve from the connecting pipe.

3. The laser head assembly as described in claim 2, characterized in that, The limiting component includes: A collar, wherein the inner wall of the collar forms a sliding channel that slides in cooperation with the outer wall of the sliding sleeve, the sliding channel having a first limiting surface facing the connecting pipe, and one end of the sliding sleeve having a second limiting surface that limits and cooperates with the first limiting surface; A connector that connects the collar to the other end of the connecting tube.

4. The laser head assembly as described in claim 3, characterized in that, Along the direction close to the center of the collar, the first limiting surface and the second limiting surface are inclined in a direction away from the connecting pipe; And / or, along the extension direction of the connecting tube, the outer edge of the first limiting surface is aligned with the inner wall of the connecting tube; And / or, along the extension direction of the connecting tube, the outer edge of the second limiting surface is aligned with the inner wall of the connecting tube; And / or, the inner wall of the collar slides in contact with the outer wall of the sliding sleeve.

5. The laser head assembly as described in claim 3, characterized in that, The other end of the connecting pipe has a first connecting flange, the collar has a second connecting flange that is connected to the first connecting flange, and the connector connects the first connecting flange and the second connecting flange.

6. The laser head assembly as described in claim 5, characterized in that, The connector can float to connect the first connecting flange and the second connecting flange.

7. The laser head assembly as described in claim 6, characterized in that, The first connecting flange and the second connecting flange have a labyrinth seal structure.

8. The laser head assembly as described in any one of claims 1-7, characterized in that, The optical components include: A component mounting base is disposed at one end of the sleeve mechanism opposite to the air nozzle and has a cavity communicating with the interior of the sleeve mechanism, and the air pipe is communicating with the cavity; A window mirror assembly is disposed on the component mounting base, through which the laser beam can enter the cavity; A reflector assembly disposed on the component mounting base is capable of adjusting the direction of the laser beam entering the cavity so that it exits along the axial direction of the sleeve mechanism; A focusing lens assembly, which is connected between the sleeve mechanism and the air nozzle.

9. The laser head assembly as described in claim 8, characterized in that, The adjustment component includes: A mounting bracket for connecting to the equipment body of a laser processing equipment, the mounting bracket being connected to the component mounting base; A drive component is disposed on the mounting base; An adapter, which connects the drive end of the drive component to the focusing lens assembly; A base plate connected to the mounting bracket has a guide rail assembly that slides with the adapter, the guide rail assembly extending in the axial direction of the sleeve mechanism.

10. The laser head assembly as claimed in claim 8, characterized in that, The air nozzle is detachably connected to the focusing lens assembly.

11. The laser head assembly as claimed in claim 10, characterized in that, The focusing lens assembly has a through-hole extending through its interior and exterior on the side facing away from the sleeve mechanism. The laser head assembly further includes a connecting component corresponding to the mounting through hole, the connecting component having a first threaded portion; The air nozzle has a connecting end facing away from its air outlet, and the connecting end has a second threaded portion that is threadedly connected to the first threaded portion.

12. A laser processing device, comprising a device body and a laser head assembly, characterized in that, The laser head assembly is the laser head assembly as described in any one of claims 1-11.

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