Multi-focal laser head

Abstract

The application provides a multi-focus laser head, comprising: a collimating mirror assembly, a multi-splitting assembly and a focusing protection assembly; the multi-splitting assembly is arranged between the collimating mirror assembly and the focusing protection assembly; the multi-splitting assembly comprises a first multi-splitting prism and a first splitting mirror seat, and the focusing protection assembly comprises a focusing optical lens and a focusing seat body; the first multi-splitting prism is fixedly arranged in the first splitting mirror seat; the collimating mirror assembly is configured to receive incident light emitted by a laser; the first multi-splitting prism is configured to split the incident light into multiple light beams; the focusing optical lens is fixedly arranged in the focusing seat body, and the focusing optical lens is configured to focus the multiple light beams transmitted by the first multi-splitting prism respectively to form multiple focal point states. The application can split the incident light into multiple light beams through the first multi-splitting prism, and the focusing optical lens can focus the multiple light beams to form multiple focal point states, so that multi-focus output is realized, and the processing efficiency of the laser is improved.

Description

Technical Field

[0001] This application relates to the field of lasers, and more specifically, to a multifocal laser head. Background Technology

[0002] As one of the core components of laser equipment, the performance of the laser head directly affects the precision and efficiency of laser processing. In traditional laser processing systems, most laser heads adopt a single-focus design, meaning that the laser beam is focused to form a fixed focal point for material cutting, welding, marking, or engraving.

[0003] While this single-focus design is simple in structure and easy to implement, its inherent efficiency issues cannot be ignored. For example, when processing large areas of material or machining complex shapes, the single-focus laser head needs to scan the entire working area through mechanical movement, which not only increases the complexity and maintenance costs of the equipment, but also limits the processing speed and efficiency. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a multi-focus laser head that can improve the processing efficiency of laser.

[0005] In a first aspect, embodiments of this application provide a multifocal laser head, comprising: a collimating lens assembly, a multi-beam splitting assembly, and a focusing protection assembly; the multi-beam splitting assembly is disposed between the collimating lens assembly and the focusing protection assembly; wherein, the multi-beam splitting assembly includes a first multi-beam splitting prism and a first beam splitter mount, and the focusing protection assembly includes a focusing optical lens and a focusing mount; the first multi-beam splitting prism is fixedly disposed inside the first beam splitter mount; the collimating lens assembly is configured to receive incident light emitted by a laser, and the first multi-beam splitting prism is configured to split the incident light into multiple beams; the focusing optical lens is fixedly disposed inside the focusing mount, and the focusing optical lens is configured to focus the multiple beams transmitted by the first multi-beam splitting prism to form multiple focal states.

[0006] In the above implementation process, a first multi-beam splitter prism and a focusing optical lens are set in the multi-focus laser head. The first multi-beam splitter prism can be used to split the incident light into multiple beams, and the focusing optical lens can focus each of the multiple beams to form multiple focal states. Through the cooperation of the first multi-beam splitter prism and the focusing optical lens, multi-focus output can be achieved, improving the laser processing efficiency.

[0007] In one embodiment, the multi-beam splitting assembly further includes: a second multi-beam splitter prism, a second beam splitter mount, a second beam splitter adjustment mount, and an adjustment measuring device; the second multi-beam splitter prism is disposed inside the second beam splitter mount; a first guide groove is provided in the second beam splitter adjustment mount, one end of the first guide groove extending to the second multi-beam splitter prism; wherein the adjustment measuring device is disposed in the first guide groove, one end of the adjustment measuring device contacting the second multi-beam splitter prism; the adjustment measuring device is configured to control the second multi-beam splitter prism to move along the circumferential center of the multifocal laser head.

[0008] In the above implementation process, by setting a second multi-beam splitter and an adjustment measuring device, the second multi-beam splitter can be controlled to move along the circumferential center of the multifocal laser head, thereby changing the relative position of the second multi-beam splitter and the first multi-beam splitter. By changing the relative position of the first and second multi-beam splitters, the number of beams formed by the incident light can be adjusted, improving the flexibility of adjusting the number of focal points output by the multifocal laser, and thus expanding the application scenarios of the multifocal laser. In addition, during the circumferential movement of the second beam splitter relative to the first beam splitter, it can change from one focal point to multiple focal points, where the spacing between the multiple focal points changes with the relative circumferential angle of the second beam splitter, thereby achieving adjustment of the roughening effect and coarsening degree, meeting the process requirements under different scenarios, and improving the processing effect of the multifocal laser.

[0009] In one embodiment, the multi-beam splitter assembly further includes: a first elastic element; a plurality of first guide slots are provided in the second beam splitter adjustment seat; one end of each first guide slot extends to the second multi-beam splitter prism; wherein at least one first guide slot is provided with an adjustment measuring device, and the other first guide slots, excluding those provided with the adjustment measuring device, are provided with the first elastic element; one end of the first elastic element contacts the second multi-beam splitter prism, and the first elastic element is configured to support the second multi-beam splitter prism.

[0010] In the above implementation process, by setting a first elastic element, the second multi-beam prism can be adjusted in different directions with the cooperation of the first elastic element and the adjustment measuring device, thereby improving the flexibility of the second multi-beam prism position adjustment.

[0011] In one embodiment, when the second multi-beam splitter is offset by 90° relative to the first multi-beam splitter, the multiple beams output a single focal point after passing through the focusing optical lens; when the second multi-beam splitter is not offset by 90° relative to the first multi-beam splitter, the multiple beams output multiple focal points after passing through the focusing optical lens.

[0012] In the above implementation process, by adjusting the offset relationship between the relative positions of the first multi-beam splitter and the second multi-beam splitter, the number of output beams of the incident light can be adjusted, thereby improving the adjustment flexibility of the number of output focal points of the multi-focal laser head and expanding the application scenarios of the multi-focal laser head.

[0013] In one embodiment, the collimating lens assembly includes: a first adjustment member and an outer kit; the first adjustment member is disposed inside the outer kit; the outer kit is provided with one or more second adjustment members, one end of the second adjustment member contacting the first adjustment member, and the other end of the second adjustment member extending outside the outer kit; wherein, the first adjustment member is configured to adjust the incident light angle under the action of the second adjustment member.

[0014] In the above implementation process, by setting a first adjustment component and a second adjustment component in the collimating lens assembly, and by adjusting the incident angle of the incident light in cooperation with the first adjustment component and the second adjustment component, the incident light can enter the multifocal laser head at the required angle, increasing the diversity of incident light incidence. Furthermore, by cooperating with the first adjustment component and the second adjustment component, the incident angle of the incident light can be adjusted to a perpendicular angle, making the energy of one or more output focal points more uniform, thereby making the surface roughening more uniform, the pits more regular, and further improving the consistency of the processed surface roughness.

[0015] In one embodiment, the first adjusting member is made of metal; the first adjusting member is configured to deform at an angle under the action of an external force.

[0016] In the above implementation process, by setting the first adjusting member to be a structure that deforms at an angle under the action of external force, the incident angle of the incident light can be adjusted by adjusting the angle of the first adjusting member, thereby improving the flexibility of the incident angle adjustment. In addition, since metal materials have good deformation capabilities, by setting the first adjusting member to be a metal material, the deformation capability of the first adjusting member can be improved, thereby improving the adjustment effect.

[0017] In one embodiment, the collimating lens assembly includes: a slider, a slider seat, and a plunger; the slider is disposed inside the slider seat; a second guide groove is provided on the slider seat, one end of the second guide groove extending to the slider; wherein the plunger is disposed in the second guide groove, one end of the plunger contacting the slider; the plunger is configured to control the slider to move in a plane parallel to the focusing optical lens.

[0018] In the above implementation process, by setting a slider and a plunger in the collimating lens assembly, the plunger is in contact with the slider, and then an external force can be applied to the plunger to make the slider move in a plane parallel to the focusing optical lens, so that the focal point comes out from the center of the nozzle and the accuracy of the focal output is improved.

[0019] In one embodiment, the collimating lens assembly further includes: a second elastic element; a plurality of second guide grooves are provided in the slider seat; one end of each second guide groove extends to the slider; wherein, the plunger is provided in the second guide groove on one side parallel to the plane of the focusing optical lens, and the second elastic element is provided in the second guide groove on the other side parallel to the plane of the focusing optical lens; one end of the second elastic element contacts the slider, and the second elastic element is configured to support the slider.

[0020] In the above implementation process, by setting a second elastic element on the collimating lens assembly, the second elastic element can be used to support the slider. During the process of adjusting the slider by the plunger, with the cooperation of the second elastic element, the position of the slider can be adjusted in different directions, thereby improving the flexibility of the slider position adjustment.

[0021] In one embodiment, the system further includes: an adjustment assembly; the adjustment assembly is disposed between the collimating lens assembly and the multi-beam splitter assembly; the adjustment assembly includes: a fixed base, an adjustment knob, a rotating component, and an adapter; the rotating component is connected to the adapter, and the adapter connects the multi-beam splitter assembly and the focusing protection assembly; the adjustment knob is disposed on the fixed base; the adjustment knob is configured to rotate around its center, and the rotating component is configured to rotate with the adjustment knob; wherein the multi-beam splitter assembly and the focusing protection assembly are configured to rotate coaxially with the rotating component along the center of the multifocal laser head.

[0022] In the above implementation process, by setting an adjustment component connected to the multi-beam splitter and the focus protection component, when the adjustment component is rotated using the adjustment knob, the multi-beam splitter and the focus protection component also rotate accordingly. This allows the positions of multiple focal points from the nozzle to be adjusted simultaneously, improving focus adjustment efficiency. Furthermore, by adjusting the overall position of multiple focal points, the relative positional relationship between the multiple focal points and the surface of the workpiece can be adjusted, further resulting in a more uniform texturing effect and better surface roughness consistency.

[0023] In one embodiment, the focusing protection assembly further includes: a protective lens and a protective lens mount; the protective lens mount is disposed on the side of the focusing mount away from the multi-beam splitter assembly; the protective lens is disposed inside the protective lens mount.

[0024] In the above implementation process, by setting a protective lens, it is possible to prevent residues from entering the multifocal laser head during processing, avoid damage to the focusing lens caused by the residues, and extend the service life of the multifocal laser head.

[0025] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The embodiment provided in this application is a three-dimensional schematic diagram of a multi-focus laser head provided in this application embodiment;

[0028] Figure 2 The provided embodiment of this application is a cross-sectional schematic diagram of a multifocal laser head.

[0029] Figure 3 This is a three-dimensional schematic diagram of a multi-splitter component provided in an embodiment of this application;

[0030] Figure 4 This is a schematic diagram of the second multi-beam splitter prism in the multi-beam splitter assembly provided in the embodiments of this application;

[0031] Figure 5 This is a schematic diagram showing the setting of the first adjustment element in the multi-splitter assembly provided in the embodiments of this application;

[0032] Figure 6 This is a schematic diagram of the sliding component arrangement in the collimating lens assembly provided in the embodiments of this application;

[0033] Figure 7 This is a three-dimensional schematic diagram of the collimating lens assembly provided in an embodiment of this application;

[0034] Figure 8 A three-dimensional schematic diagram of the adjustment component provided in the embodiments of this application;

[0035] Figure 9 A three-dimensional schematic diagram of the focusing protection component provided in the embodiments of this application;

[0036] Figure 10 This is a schematic diagram showing the arrangement of various lenses in a multifocal laser head provided in an embodiment of this application;

[0037] Figure 11 This is a schematic diagram showing the multi-focused beam output after the incident light passes through the multi-focus laser head.

[0038] Figure Descriptions: 1-Collimating lens assembly, 101-Collimating compound optical lens, 102-Fiber optic interface, 103-Second adjustment component, 106-External kit, 107-First adjustment component, 108-Sliding component, 109-Sliding component seat, 104-Plug, 110-Second elastic element, 111-Collimating lens mount, 2-Adjustment assembly, 201-Fixed seat, 202-Rotating component, 203-Adjustment knob, 204-Rotation knob 3-Multi-beam splitting assembly, 301-First multi-beam splitting prism, 302-Second multi-beam splitting prism, 303-First beam splitter mount, 304-Second beam splitter adjustment mount, 305-Adjustment measuring device, 306-First elastic element, 307-Second beam splitter mount, 4-Focusing protection assembly, 401-Focusing optical lens, 402-Protective lens, 403-Focusing mount body, 405-Protective lens mount body, 406-Nozzle. Detailed Implementation

[0039] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0040] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] Laser texturing is a specialized field involving high-tech applications, primarily focusing on the processes and technologies of texturing material surfaces using laser technology. Currently, the field of laser texturing faces the following technical challenges:

[0042] 1. The market generally uses single-focus laser heads for laser texturing processes, which results in low texturing efficiency.

[0043] 2. The spacing between the roughening dots is difficult to control, often requiring the addition of an XY platform motion adjustment device. This mechanical device is complex and cumbersome, demanding a high level of skill from production line operators, and its operation is complicated, significantly impacting production efficiency. Poor control of the roughening dot spacing directly results in irregular and disordered roughening pits on the workpiece surface, uneven surface roughness, and unsatisfactory roughening quality.

[0044] In view of this, this application proposes a multifocal laser head, which incorporates a first multi-beam splitter prism and a focusing optical lens. The first multi-beam splitter prism can split the incident light into multiple beams, and the focusing optical lens can focus each of the multiple beams to form multiple focal states. Through the cooperation of the first multi-beam splitter prism and the focusing optical lens, multifocal output can be achieved, improving laser processing efficiency.

[0045] like Figure 1 , Figure 2 The diagram shown is a schematic diagram of a multifocal laser head provided in an embodiment of this application, including: a collimating lens assembly 1, a multi-beam splitting assembly 3, and a focusing protection assembly 4.

[0046] The multi-beam splitter assembly 3 is positioned between the collimating lens assembly 1 and the focusing protection assembly 4. The multi-beam splitter assembly 3 includes a first multi-beam splitter prism 301 and a first beam splitter mount 303, while the focusing protection assembly 4 includes a focusing optical lens 401 and a focusing mount 403.

[0047] like Figure 3 As shown, the first multi-beam splitter 301 is fixedly disposed inside the first beam splitter mount 303; the focusing optical lens 401 is fixedly disposed inside the focusing mount 403.

[0048] A laser is disposed at the end of the collimating lens assembly 1 furthest from the multi-beam splitter assembly 3. The collimating lens assembly 1 is configured to receive incident light emitted by the laser and transmit the incident light to the multi-beam splitter assembly 3. The first multi-beam splitter prism 301 in the multi-beam splitter assembly 3 is configured to split the incident light into multiple beams and transmit the beams to the focusing optical lens 401. The focusing optical lens 401 is configured to focus the multiple beams transmitted by the first multi-beam splitter prism 301 to form multiple focal states.

[0049] The first multi-beam splitter 301 here is an optical device that uses the refraction and dispersion characteristics of a prism to decompose incident light into multiple beams according to different wavelengths and allows these beams to pass through the prism with a certain transmission ratio.

[0050] Understandably, when incident light (containing multiple wavelengths) is incident on the first multi-beam splitter 301, light of different wavelengths will be deflected to different degrees, thus forming a series of spectral lines arranged in wavelength order in space. At the same time, the tilted plane inside the first multi-beam splitter 301 may cause the light to be reflected, changing the direction of light propagation, thereby splitting the incident light into multiple beams.

[0051] In one embodiment, the first multi-beam splitter prism 301 may be a four-beam transmission prism. This four-beam transmission prism can be used to split incident light into multiple beams.

[0052] Optionally, the first multi-beam splitter 301 can also be a two-beam splitter prism, a three-beam splitter prism, a four-beam splitter prism, a five-beam splitter prism, etc. The first multi-beam splitter prism 301 can be selected according to the actual situation.

[0053] The aforementioned focusing optical lens 401 is an optical element that uses the refraction principle of a lens to converge incident light rays to a point (i.e., the focal point) behind the lens, or to turn parallel light rays into converging light rays after passing through the lens.

[0054] Understandably, when the multifocal laser head is operating, the incident light emitted by the laser is received by the collimating lens assembly 1 and transmitted to the multi-beam splitting assembly 3 via the collimating lens assembly 1. The first multi-beam splitting prism 301 in the collimating lens assembly 1 splits the incident light into multiple beams and transmits them to the focusing protection assembly 4. The focusing optical lens 401 in the focusing protection assembly 4 focuses the multiple beams respectively, forming multiple focal states, and transmits the formed multiple focal points to the outside of the multifocal laser head.

[0055] In the above implementation process, a first multi-beam splitter 301 and a focusing optical lens 401 are arranged in the multi-focus laser head. The first multi-beam splitter 301 can be used to split the incident light into multiple beams, and the focusing optical lens 401 can focus each of the multiple beams to form multiple focal states. Through the cooperation of the first multi-beam splitter 301 and the focusing optical lens 401, multi-focus output can be achieved, improving the laser processing efficiency.

[0056] In one possible implementation, such as Figure 4 As shown, the multi-beam splitting assembly 3 also includes: a second multi-beam splitting prism 302, a second beam splitter mount 307, a second beam splitter adjustment mount 304, and an adjustment and measurement device 305.

[0057] The second multi-beam prism 302 is disposed inside the second beam splitter mount 307; the second beam splitter adjustment mount 304 is provided with a first guide groove, one end of which extends to the second multi-beam prism 302; the first guide groove is provided with an adjustment measuring device 305, one end of which contacts the second multi-beam prism 302.

[0058] The second multi-beam splitter 302 here is also an optical device that utilizes the refraction and dispersion characteristics of a prism to decompose incident light into multiple beams according to different wavelengths, and allows these beams to pass through the prism with a certain transmission ratio. The second multi-beam splitter 302 and the first multi-beam splitter 301 can be the same device or different devices. The device types of the second multi-beam splitter 302 and the first multi-beam splitter 301 can be selected according to the actual situation.

[0059] In one embodiment, the second multi-beam splitter prism 302 can be a four-beam transmission prism. This four-beam transmission prism can be used to split incident light into multiple beams.

[0060] Optionally, the second multi-beam splitter 302 can also be a divisor prism, trivisor prism, quartile prism, quintile prism, etc. The second multi-beam splitter prism 302 can be selected according to the actual situation.

[0061] The second multi-beam prism 302 is configured to cooperate with the first multi-beam prism 301 to adjust the beam of incident light.

[0062] The aforementioned adjustment and measurement device 305 is configured to control the movement of the second multi-beam prism 302 along the circumferential center of the multifocal laser head. This adjustment and measurement device 305 can also be used to measure the rotational distance of the second multi-beam prism 302.

[0063] In one embodiment, the adjusting measuring device 305 is a micrometer probe.

[0064] It should be understood that since one end of the adjustment measuring device 305 is in contact with the second multi-beam splitter 302, by applying an external force to the end of the adjustment measuring device 305 away from the second multi-beam splitter 302, this external force can be transmitted to the adjustment measuring device 305 through the second multi-beam splitter 302, thereby causing the second multi-beam splitter 302 to move along the circumferential center of the multifocal laser head under the action of the external force. Furthermore, since the position of the first multi-beam splitter 301 is relatively fixed, the relative position between the second multi-beam splitter 302 and the first multi-beam splitter 302 will change during the circular motion of the second multi-beam splitter 302. By changing the relative positional relationship between the first multi-beam splitter 301 and the second multi-beam splitter 302, the number of incident light beams can be adjusted in cooperation with the first multi-beam splitter 301 and the second multi-beam splitter 302.

[0065] In one embodiment, the center points of the first multi-beam splitter 301 and the second multi-beam splitter are on the same straight line.

[0066] Optionally, the end of the adjustment measuring device 305 away from the second multi-beam splitter 302 extends to the outside of the multi-focus laser head housing.

[0067] In the above implementation process, by setting a second multi-beam splitter 302 and an adjustment measuring device 305, the adjustment measuring device 305 can be used to control the movement of the second multi-beam splitter 302 along the circumferential center of the multifocal laser head, thereby changing the relative position of the second multi-beam splitter 302 and the first multi-beam splitter 301. By changing the relative position of the first multi-beam splitter 301 and the second multi-beam splitter 302, the number of beams formed by the incident light can be adjusted, improving the flexibility of adjusting the number of focal points output by the multifocal laser, and thus expanding the application scenarios of the multifocal laser.

[0068] In one possible implementation, such as Figure 4 As shown, the multi-splitter assembly 3 also includes a first elastic element 306.

[0069] The second beam splitter adjustment seat 304 is provided with a plurality of first guide grooves; one end of each first guide groove extends to the second multi-beam splitter 302.

[0070] In one embodiment, at least one first guide groove is provided with an adjustment measuring device 305, and other first guide grooves besides the one with the adjustment measuring device 305 are provided with a first elastic element 306.

[0071] One end of the first elastic element 306 is in contact with the second multi-beam splitter 302, and the first elastic element 306 is configured to support the second multi-beam splitter 302.

[0072] For example, the second beam splitter adjustment base 304 is provided with four first guide grooves, which are respectively arranged in four opposite directions of the second beam splitter adjustment base 304. Among them, one first guide groove is provided with an adjustment measuring device 305, and the other three first guide grooves are each provided with a first elastic element 306.

[0073] The first elastic element 306 mentioned above can be a spring, rubber, high-resilience sponge, etc., and the specific structure of the first elastic element 306 can be selected according to the actual situation.

[0074] Understandably, when the adjusting measuring device 305 adjusts the second multi-beam splitter 302, the second multi-beam splitter 302 will move under the action of an external force. At this time, the second multi-beam splitter 302 can transmit the external force to the elastic element, and by squeezing the elastic element, it obtains movement space to adjust the relative position of the second multi-beam splitter 302 and the first multi-beam splitter 301. In addition, if it is necessary to restore the position of the second multi-beam splitter 302, the external force can be removed, and the elastic element will rebound without external force, automatically resetting the second multi-beam splitter 302.

[0075] Furthermore, if the external force applied by the adjusting measuring device 305 during the adjustment of the second multi-beam splitter 302 is too large, it needs to be appropriately reduced. If the external force is reduced, the elastic element will rebound, thereby causing the second multi-beam splitter 302 to retract.

[0076] In the above implementation process, by setting the first elastic element 306, the second multi-beam splitter 302 can be adjusted in different directions with the cooperation of the first elastic element 306 and the adjustment measuring device 305, thereby improving the flexibility of the position adjustment of the second multi-beam splitter 302.

[0077] In one possible implementation, when the second multi-beam splitter 302 is offset by 90° relative to the first multi-beam splitter 301, multiple beams are output to a single focal point after passing through the focusing optical lens 401; when the position of the second multi-beam splitter 302 relative to the first multi-beam splitter 301 is not offset by 90°, multiple beams are output to multiple focal points after passing through the focusing optical lens 401.

[0078] Understandably, when the second multi-beam splitter 302 is offset by 90° relative to the first multi-beam splitter 301, the incident and exit surfaces of the two prisms will form a perpendicular relationship. The incident light first passes through the first multi-beam splitter 301 and is decomposed into beams in multiple directions. These beams then enter the second multi-beam splitter 302, and due to the 90° offset, the propagation directions of these beams will change again. In the second multi-beam splitter 302, after being offset by 90°, the multiple beams from the first multi-beam splitter 301 will propagate along certain angles and paths. When these beams meet inside the prism or at the exit interface, they may superimpose, thus forming a single beam. The beam output from the second multi-beam splitter 302 then passes through the focusing optical lens 401 and outputs a focal point.

[0079] When the second multi-beam splitter 302 is not offset by 90° relative to the first multi-beam splitter 301, light passing through the first multi-beam splitter is decomposed into multiple beams. These beams then enter the second multi-beam splitter, which is offset relative to the first prism. Because the offset angle of the second prism is not 90°, the propagation path of the incident beam in the second prism is changed, resulting in the output beam being dispersed at different angles.

[0080] Understandably, the incident light beam exiting the collimating lens assembly 1 is parallel light. After passing through the first multi-beam splitter 301, the beam exiting is composed of multiple independent beams. When the second multi-beam splitter 302 is offset by exactly 90 degrees relative to the first multi-beam splitter 301, the beam exiting through the focusing optical lens 401 is in a single-focus state. When the measuring device 305 is rotated, the second multi-beam splitter 302 is simultaneously rotated along the circumference center. At this time, the position of the second multi-beam splitter 302 relative to the first multi-beam splitter 301 is no longer 90 degrees. After exiting through the focusing optical lens 401, the beam gradually evolves from a single-focus state to a multi-focus state. Furthermore, the side lengths of the multiple focal points are equal. The corresponding side lengths of the four focal points can be set according to the actual roughening process requirements. This results in a regular and orderly backfilling effect for the pits on the laser-roughened surface, and a more uniform surface roughness. This can greatly improve the surface quality and efficiency of laser roughening processing.

[0081] In the above implementation process, by adjusting the offset relationship between the relative positions of the first multi-beam splitter 301 and the second multi-beam splitter 302, the number of output beams of the incident light can be adjusted, improving the flexibility of adjusting the number of output focal points of the multi-focal laser head and expanding the application scenarios of the multi-focal laser head. Furthermore, during the circular motion of the second beam splitter 302 relative to the first beam splitter 301, it can change from one focal point to multiple focal points. The spacing between these multiple focal points changes with the relative circumferential angle of the second beam splitter 302, thereby achieving adjustment of the texturing effect and roughness, meeting the process requirements of different scenarios, and improving the processing effect of the multi-focal laser.

[0082] In one possible implementation, such as Figure 5 As shown, the collimating lens assembly 1 includes: a first adjustment element 107 and an external kit 106.

[0083] The first adjusting member 107 is disposed inside the outer kit 106; the outer kit 106 is provided with one or more second adjusting members 103, one end of the second adjusting member 103 contacts the first adjusting member 107, and the other end of the second adjusting member 103 extends to the outside of the outer kit 106.

[0084] The first adjusting element 107 here is provided with an aperture for incident light to pass through. After receiving the incident light, the collimating lens assembly 1 directs the incident light through this aperture into the multi-beam splitter assembly 3.

[0085] The aforementioned second adjustment member 103 extends through a portion of the outer kit 106, with one end of the second adjustment member 103 contacting the first adjustment member 107 and the other end extending to the outside of the outer kit 106.

[0086] The first adjusting member 107 is configured to adjust the incident light angle under the action of the second adjusting member 103.

[0087] Understandably, when the first adjustment member 107 needs to be adjusted, an external force can be applied to one end of the second adjustment member 103 extending to the outer sleeve 106. The external force is transmitted to the first adjustment member 107 through the second adjustment member 103. The first adjustment member 107 deforms under the action of the external force, thereby changing the position of the light aperture to achieve the incident angle of the incident light.

[0088] The first adjusting component 107 here is a part that can deform at an angle under external force. For example, it is made of materials such as rubber, plastic, or metal. The specific material of the first adjusting component 107 can be selected according to the actual situation.

[0089] The aforementioned second adjusting component 103 is a part capable of telescopic adjustment. Examples include adjusting screws and telescopic rods. This second adjusting component 103 can be selected according to actual needs.

[0090] In one embodiment, there are multiple second adjusting members 103, which are disposed in multiple directions of the first adjusting member 107. For example, there are four second adjusting members 103, which are respectively disposed at the four corners of the first adjusting member 107.

[0091] For example, such as Figure 5 As shown, the second adjusting member 103 consists of four mushroom-head adjusting screws, with two of the four mushroom-head adjusting screws arranged diagonally. By adjusting the four mushroom-head adjusting screws diagonally, the first adjusting member 107 can undergo angular deformation, thereby achieving the effect of adjusting the incident angle.

[0092] In the above implementation process, by setting a first adjusting member 107 and a second adjusting member 103 in the collimating lens assembly 1, and by cooperating with the first adjusting member 107 and the second adjusting member 103, the incident angle of the incident light can be adjusted, allowing the incident light to enter the multifocal laser head at the required angle, increasing the diversity of incident light incidence. Furthermore, by cooperating with the first adjusting member 107 and the second adjusting member 103, the incident angle of the incident light can be adjusted to a perpendicular angle, making the energy of one or more output focal points more uniform, thereby making the surface roughening more uniform, the pits more regular, and further improving the consistency of the processed surface roughness.

[0093] In one possible implementation, the first adjusting member 107 is made of metal.

[0094] The first adjusting member 107 is configured to deform at an angle under the action of external force.

[0095] Optionally, the first adjusting member 107 can be made of materials such as aluminum, steel, aluminum alloy, or copper alloy, and the specific material of the first adjusting member 107 can be selected according to the actual situation.

[0096] Understandably, such as Figure 5 As shown, when the first adjusting member 107 receives an external force, it deforms under the action of the external force, thereby changing the angle of the light aperture in the first adjusting member 107. After the incident light enters the collimating lens assembly 1, it needs to pass through the light aperture in the first adjusting member 107, so the incident angle of the incident light also changes.

[0097] In the above implementation process, by setting the first adjusting member 107 to be a structure that deforms at an angle under the action of external force, the incident angle of the incident light can be adjusted by adjusting the angle of the first adjusting member 107, thereby improving the flexibility of the incident angle adjustment. In addition, since metal materials have good deformation capabilities, by setting the first adjusting member 107 to be a metal material, the deformation capability of the first adjusting member 107 can be improved, thereby improving the adjustment effect.

[0098] In one possible implementation, such as Figure 6 As shown, the collimating lens assembly 1 includes: a slider 108, a slider seat 109, and a plunger 104.

[0099] The slider 108 is disposed inside the slider seat 109; the slider seat 109 is provided with a second guide groove, one end of which extends to the slider 108; a plunger 104 is disposed in the second guide groove, one end of which contacts the slider 108.

[0100] The slider 108 and slider seat 109 are disposed in a plane parallel to the focusing optical lens 401. The slider 108 is configured to slide in a plane parallel to the focusing optical lens 401.

[0101] The plunger 104 described above is configured to control the movement of the slider 108 in a plane parallel to the focusing optical lens 401.

[0102] Understandably, by applying an external force to the end of the plunger 104 away from the slider 108, the external force is transmitted to the slider 108 through the plunger 104. The slider 108 slides on the plane under the action of the external force, and a light aperture is provided in the slider 108 for light to pass through. When the slider 108 slides, the light aperture on the slider 108 also moves accordingly, thereby aligning the light aperture with the nozzle 406, so that the focal point emerges from the center of the nozzle 406.

[0103] In one embodiment, the collimating lens assembly 1 includes a collimating compound optical lens 101 and a collimating lens mount 111, with the collimating compound optical lens 101 fixedly disposed inside the collimating lens mount 111. The incident light is configured to form a parallel beam through the collimating compound optical lens 101.

[0104] The collimating lens mount 111 is fixed together with the slider 108, and the collimating lens mount 111 is located at the lower middle part of the slider 108. When the slider 108 moves, it drives the collimating compound optical lens 101 to move and adjust in a plane parallel to the focusing optical lens 401, so that the focal point comes out from the center of the nozzle 406.

[0105] There are several ways to adjust the slider 108 via the plunger 104. The following examples demonstrate the principle of adjusting the slider 108 via the plunger 104:

[0106] Method 1: The plunger 104 is directly connected to the slider 108. The moving position of the slider 108 is adjusted by adjusting the length of the plunger 104 inside the slider seat 109.

[0107] Method 2: A second elastic element 110 can also be provided in the second guide groove. By adjusting the length of the plunger 104 inside the sliding member seat 109, the moving position of the sliding member 108 can be adjusted with the cooperation of the second elastic element 110.

[0108] The above-described method of adjusting the plunger 104 to the slider 108 is merely exemplary, and the specific method of adjusting the plunger 104 to the slider 108 can be selected according to the actual situation.

[0109] In one embodiment, such as Figure 7 As shown, the collimating lens assembly 1 also includes an optical fiber interface 102 for receiving incident light. The incident light forms a parallel beam after passing through the optical fiber interface 102.

[0110] In the above implementation process, by setting a slider 108 and a plunger 104 in the collimating lens assembly 1, the plunger 104 contacts the slider 108, and then by applying an external force to the plunger 104, the slider 108 can be moved in a plane parallel to the focusing optical lens 401, so that the focal point comes out from the center of the nozzle 406, thereby improving the accuracy of the focal output.

[0111] In one possible implementation, such as Figure 6 As shown, the collimating lens assembly 1 also includes a second elastic element 110.

[0112] The sliding member seat 109 is provided with a plurality of second guide grooves; one end of each second guide groove extends to the sliding member 108; a plunger 104 is provided in the second guide groove on one side parallel to the plane of the focusing optical lens 401, and a second elastic element 110 is provided in the second guide groove on the other side parallel to the plane of the focusing optical lens 401; one end of the second elastic element 110 contacts the sliding member 108.

[0113] The second elastic element 110 here can be a spring, rubber, high-resilience sponge, etc., and the specific structure of the second elastic element 110 can be selected according to the actual situation.

[0114] The second elastic element 110 described above is configured to support the sliding member 108.

[0115] Understandably, during the adjustment of the slider 108 by the plunger 104, the slider 108 will move under the action of an external force. At this time, the slider 108 can transmit the external force to the second elastic element 110, and by squeezing the second elastic element 110, it gains movement space, thus enabling the slider 108 to move in a plane parallel to the focusing optical lens 401. In addition, if it is necessary to restore the position of the slider 108, the external force can be removed, and the second elastic element 110 will rebound without external force, automatically resetting the slider 108.

[0116] Furthermore, if the external force applied by the plunger 104 to the slider 108 is too large during the adjustment process, it needs to be reduced appropriately. If the external force is reduced, the second elastic element 110 will rebound, thereby causing the slider 108 to retract.

[0117] In the above implementation process, by setting a second elastic element 110 on the collimating lens assembly 1, the second elastic element 110 can be used to support the slider 108. During the process of adjusting the slider 108 by the plunger 104, with the cooperation of the second elastic element 110, the position of the slider 108 in different directions can be adjusted, thereby improving the flexibility of the slider 108 position adjustment.

[0118] In one possible implementation, the multifocal laser head also includes an adjustment component 2.

[0119] The adjustment component 2 is located between the collimating lens component 1 and the multi-beam splitter component 3. The adjustment component 2 is a rotating platform structure.

[0120] like Figure 8 As shown, the adjustment component 2 here includes: a fixed base 201, an adjustment knob 203, a rotating component 202, and an adapter 204.

[0121] The rotating component 202 is connected to the adapter 204, which in turn connects the multi-beam splitter 3 and the focusing protection component 4. The adjusting knob 203 is mounted on the fixed base 201. The fixed base 201 is parallel to the plane of the focusing optical lens 401.

[0122] In one embodiment, the adjustment knob 203 is positioned perpendicular to the plane of the fixed base 201. The adjustment knob 203 is provided with an adjustment scale, and the adjustment of the rotating component 202 and the adapter 204 can be achieved by operating the adjustment knob 203.

[0123] The adjustment knob 203 is configured to move in a circular motion around its center, and the rotating part 202 is configured to rotate with the adjustment knob 203.

[0124] The rotating component 202 is disposed on the side of the fixed base 201 away from the collimating lens assembly 1, and is disposed in a plane parallel to the focusing optical lens 401. The rotating component 202 is connected to the adjustment knob 203 and is configured to rotate with the adjustment knob 203.

[0125] The aforementioned adapter 204 is disposed on the side of the rotating member 202 away from the fixed base 201, and the adapter 204 is disposed in a plane parallel to the focusing optical lens 401. The adapter 204 is configured to rotate with the rotating member 202.

[0126] In one embodiment, a fixing connector is provided on the side of the adapter 204 away from the rotating member 202, and the fixing connector is configured to be fixedly connected to the multi-beam splitter 3. The end of the multi-beam splitter 3 away from the adapter 204 is configured to be fixedly connected to the focusing protection component 4.

[0127] The multi-beam splitter 3 and the focusing protection assemblies 4 are configured to rotate coaxially with the rotating component 202 along the center of the multi-focus laser head. This allows the positions of the multiple focal points from the nozzle 406 to be adjusted simultaneously as a whole.

[0128] Understandably, the adjustment component 2 is a rotating platform structure. The fixed base 201 is fixed, and an adjustment knob 203 is set on the fixed base 201 to make circular motion, which allows the rotating component 202 to rotate. The rotating component 202 is connected to the adapter 204, which connects to the multi-beam splitter 3 and the focusing protection component 4, enabling the multi-beam splitter 3 and the focusing protection component 4 to rotate coaxially along the center of the laser head. This allows the overall positional relationship of the multiple focal points from the nozzle 406 to rotate. This results in a regular and orderly backfilling effect of the pits on the laser-textured surface, a more uniform surface roughness, and improves the surface quality and efficiency of laser texturing.

[0129] In the above implementation process, by setting an adjustment component 2, which is connected to the multi-beam splitting component 3 and the focus protection component 4, when the adjustment component 2 is rotated by the adjustment knob 203, the multi-beam splitting component 3 and the focus protection component 4 can also rotate accordingly. This allows the positions of the multiple focal points from the nozzle 406 to be adjusted simultaneously, improving the focus adjustment efficiency. Furthermore, by adjusting the overall position of the multiple focal points through the adjustment component 2, the relative positional relationship between the multiple focal points and the surface of the workpiece can be adjusted, further resulting in a more uniform roughening effect and better surface roughness consistency.

[0130] In one possible implementation, such as Figure 9 As shown, the focusing protection component 4 also includes a protective lens 402 and a protective lens mount 405.

[0131] The protective lens mount 405 is located on the side of the focusing mount 403 away from the multi-beam splitter 3; the protective lens 402 is located inside the protective lens mount 405.

[0132] Optionally, the protective lens mount 405 is connected to the focusing mount 403.

[0133] In one embodiment, the focusing protection assembly 4 is further provided with an air pipe connector and an air passage. The air pipe connector is fixed to the protective lens mount 405 and is connected in series with the internal air passage for connecting an inert gas.

[0134] The multifocal laser head is also equipped with a nozzle 406, which is located on the side of the protective lens 402 away from the focusing mount 403. Inert gas is ejected from the nozzle 406 and blown onto the workpiece surface to prevent the roughened surface from oxidizing and turning black.

[0135] Understandably, during laser texturing, residue can rise vertically upwards, potentially damaging the focusing lens. By incorporating a protective lens 402, residue can be prevented from entering the surface of the focusing lens, thus protecting it.

[0136] It should be understood that, such as Figure 10 As shown, in this embodiment of the multifocal laser head, the collimating composite optical lens 101, the first multi-beam splitter 301, the second multi-beam splitter 302, the focusing optical lens 401, and the protective lens 402 are arranged sequentially. The protective lens 402 is located at the end closest to the nozzle 406, and the collimating composite optical lens 101 is located at the end furthest from the nozzle 406.

[0137] in addition, Figure 10 The diagram also shows the output single-focus beam after the incident light passes through the multifocal laser head. Figure 10As can be seen, the incident light, after passing through the first multi-beam splitter 301, forms a parallel beam that enters the first multi-beam splitter 301 and outputs multiple beams. At this time, since the second multi-beam splitter 302 is offset by 90° relative to the first multi-beam splitter 301, the multiple beams are emitted in the same direction after passing through the second multi-beam splitter 302, and then output a single focal point after passing through the focusing optical lens 401.

[0138] Figure 11 This is a schematic diagram showing the multi-focused beam output after the incident light passes through the multi-focus laser head. Figure 11 As can be seen, the incident light, after passing through the first multi-beam splitter 301, forms a parallel beam that enters the first multi-beam splitter 301 and outputs multiple beams. At this time, since the position of the second multi-beam splitter 302 relative to the first multi-beam splitter 301 is not offset by 90°, the multiple beams are emitted in multiple directions after passing through the second multi-beam splitter 302, and then output multiple focal points after passing through the focusing optical lens 401.

[0139] This laser optical path structure allows for adjustment from a single focal point to multiple focal points at the nozzle 406. Furthermore, the spacing between these focal points is adjusted by rotating the lower multi-beam prism relative to the center of the optical axis. The overall positional relationship of the multiple focal points is adjusted using a rotating component. This entire solution allows for easy adjustment of the spacing between the multiple texturing points and the overall positional relationship of the multiple focal points, significantly improving surface roughness uniformity, texturing quality, and texturing efficiency.

[0140] In the above implementation process, by setting a protective lens 402, it is possible to prevent residues from entering the multifocal laser head during the processing, avoid damage to the focusing lens caused by the residues, and extend the service life of the multifocal laser head.

[0141] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0142] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A multifocal laser head, characterized in that, include: The collimating lens assembly, the beam splitter assembly, and the focus protection assembly are provided; the beam splitter assembly is disposed between the collimating lens assembly and the focus protection assembly. The multi-beam splitting assembly includes a first multi-beam splitting prism and a first beam splitting mirror mount, and the focusing protection assembly includes a focusing optical lens and a focusing mount. The first multi-beam splitter is fixedly disposed inside the first beam splitter mount; the collimating lens assembly is configured to receive incident light emitted by the laser, and the first multi-beam splitter is configured to split the incident light into multiple beams; The focusing optical lens is fixedly disposed inside the focusing mount, and the focusing optical lens is configured to focus the multiple beams transmitted by the first multi-beam splitter to form multiple focal states.

2. The multifocal laser head according to claim 1, characterized in that, The multi-beam splitter assembly further includes: a second multi-beam splitter prism, a second beam splitter mount, a second beam splitter adjustment mount, and an adjustment and measurement device; The second multi-beam splitter is disposed inside the second beam splitter mount; The second beam splitter adjustment seat is provided with a first guide groove, one end of which extends to the second multi-beam splitter prism; The first guide groove is provided with the adjustment and measurement device, one end of which is in contact with the second multi-beam splitter prism; the adjustment and measurement device is configured to control the second multi-beam splitter prism to move along the circumferential center of the multi-focus laser head.

3. The multifocal laser head according to claim 2, characterized in that, The multi-splitter assembly further includes: a first elastic element; The second beam splitter adjustment base is provided with multiple first guide grooves; One end of each of the first guide slots extends to the second multi-beam prism; Wherein, at least one of the first guide grooves is provided with an adjustment measuring device, and the other first guide grooves, excluding those provided with the adjustment measuring device, are provided with the first elastic element; One end of the first elastic element is in contact with the second multi-beam splitter prism, and the first elastic element is configured to support the second multi-beam splitter prism.

4. The multifocal laser head according to claim 2, characterized in that, When the second multi-beam splitter is offset by 90° relative to the first multi-beam splitter, the multiple beams are output to a single focal point after passing through the focusing optical lens; When the second multi-beam splitter is not offset by 90° relative to the first multi-beam splitter, the multiple beams are output at multiple focal points after passing through the focusing optical lens.

5. The multifocal laser head according to claim 1, characterized in that, The collimating lens assembly includes: a first adjustment element and an external kit; The first adjustment element is disposed inside the external kit; The external kit is provided with one or more second adjustment members, one end of the second adjustment member contacts the first adjustment member, and the other end of the second adjustment member extends to the outside of the external kit; The first adjusting member is configured to adjust the incident light angle under the action of the second adjusting member.

6. The multifocal laser head according to claim 5, characterized in that, The first adjusting element is made of metal; The first adjusting member is configured to deform at an angle under the action of an external force.

7. The multifocal laser head according to claim 1, characterized in that, The collimating lens assembly includes: a slider, a slider seat, and a plunger; The slider is disposed inside the slider seat; The slider seat is provided with a second guide groove, one end of which extends to the slider. The plunger is disposed in the second guide groove, and one end of the plunger is in contact with the slider; the plunger is configured to control the slider to move in a plane parallel to the focusing optical lens.

8. The multifocal laser head according to claim 7, characterized in that, The collimating lens assembly also includes: a second elastic element; The sliding component seat is provided with a plurality of second guide grooves; One end of each of the second guide grooves extends to the slider; The plunger is provided in the second guide groove on one side of the plane of the focusing optical lens, and the second elastic element is provided in the second guide groove on the other side of the plane of the focusing optical lens. One end of the second elastic element contacts the slider, and the second elastic element is configured to support the slider.

9. The multifocal laser head according to any one of claims 1-8, characterized in that, Also includes: Adjustment components; The adjustment component is disposed between the collimating lens component and the multi-beam splitter component; The adjustment assembly includes: a fixed base, an adjustment knob, a rotating component, and a connecting component; The rotating component is connected to the adapter, and the adapter connects the multi-beam splitter assembly and the focusing protection assembly; The adjustment knob is mounted on the fixed base; the adjustment knob is configured to move in a circular motion around its center, and the rotating component is configured to rotate with the adjustment knob. The multi-beam splitting component and the focusing protection component are configured to rotate coaxially with the rotating component along the center of the multi-focus laser head.

10. The multifocal laser head according to any one of claims 1-8, characterized in that, The focusing protection assembly also includes: a protective lens and a protective lens mount; The protective lens mount is located on the side of the focusing mount away from the multi-beam splitter assembly; The protective lens is disposed inside the protective lens base.

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