CN119035751A

CN119035751A - Multi-focus laser head

Info

Publication number: CN119035751A
Application number: CN202411534566.2A
Authority: CN
Inventors: 卫汉春; 邵华江; 王志刚; 王征
Original assignee: Jiaqiang Shanghai Intelligent Technology Co ltd
Current assignee: Jiaqiang Shanghai Intelligent Technology Co ltd
Priority date: 2024-10-31
Filing date: 2024-10-31
Publication date: 2024-11-29

Abstract

The application provides a multi-focus laser head which comprises a collimating mirror assembly, a multi-beam splitting assembly and a focusing protection assembly, wherein the multi-beam splitting assembly is arranged between the collimating mirror assembly and the focusing protection assembly, the multi-beam splitting assembly comprises a first multi-beam splitting prism and a first beam splitting seat, the focusing protection assembly comprises a focusing optical lens and a focusing seat body, the first multi-beam splitting prism is fixedly arranged in the first beam splitting seat, the collimating mirror assembly is configured to receive incident light emitted by a laser, the first multi-beam splitting prism is configured to split the incident light into a plurality of light beams, the focusing optical lens is fixedly arranged in the focusing seat body, and the focusing optical lens is configured to focus the plurality of light beams transmitted by the first multi-beam splitting prism respectively to form a plurality of focus states. According to the application, the first multi-beam splitting prism is arranged to split incident light into a plurality of light beams, the focusing optical lens focuses the plurality of light beams to form a plurality of focus states, so that multi-focus output is realized, and the processing efficiency of laser is improved.

Description

Multi-focus laser head

Technical Field

The application relates to the field of lasers, in particular to a multi-focus laser head.

Background

The laser head is one of the core components of the laser equipment, and the performance of the laser head directly affects the precision and efficiency of laser processing. In conventional laser processing systems, most laser heads employ a single focus design, i.e., a laser beam is focused to form a fixed focus for cutting, welding, marking, or engraving materials.

Such single focus designs, while simple in construction and easy to implement, are not without their inherent efficiency problems. For example, in processing large areas of material or complex shape processing, a single focus laser head needs to scan the entire working area by mechanical movement, which not only increases the complexity and maintenance costs of the equipment, but also limits the processing speed and efficiency.

Disclosure of Invention

In view of the above, an object of an embodiment of the present application is to provide a multi-focus laser head capable of improving the processing efficiency of laser.

The embodiment of the application provides a multi-focus laser head, which comprises a collimating mirror assembly, a multi-beam splitting assembly and a focusing protection assembly, wherein the multi-beam splitting assembly is arranged between the collimating mirror assembly and the focusing protection assembly, the multi-beam splitting assembly comprises a first multi-beam splitting prism and a first beam splitting mirror seat, the focusing protection assembly comprises a focusing optical lens and a focusing seat body, the first multi-beam splitting prism is fixedly arranged in the first beam splitting mirror seat, the collimating mirror assembly is configured to receive incident light emitted by a laser, the first multi-beam splitting prism is configured to split the incident light into a plurality of light beams, the focusing optical lens is fixedly arranged in the focusing seat body, and the focusing optical lens is configured to focus the plurality of light beams transmitted by the first multi-beam splitting prism respectively to form a plurality of focus states.

In the implementation process, the first multi-beam prism and the focusing optical lens are arranged in the multi-focus laser head, wherein the first multi-beam prism can be used for dividing incident light into a plurality of light beams, and the focusing optical lens can be used for focusing the plurality of light beams respectively to form a plurality of focus states. Through the cooperation of first many beam splitter prism and focusing optical lens, can realize the multifocal output, improve the machining efficiency of laser.

In one embodiment, the multi-beam splitting assembly further comprises a second multi-beam splitting prism, a second beam splitting lens seat, a second beam splitting lens adjusting seat and an adjusting and measuring device, wherein the second multi-beam splitting prism is arranged inside the second beam splitting lens seat, a first guide groove is formed in the second beam splitting lens adjusting seat, one end of the first guide groove extends to the second multi-beam splitting prism, the adjusting and measuring device is arranged in the first guide groove, one end of the adjusting and measuring device is in contact with the second multi-beam splitting prism, and the adjusting and measuring device is configured to control the second multi-beam splitting prism to move along the circumferential center of the multi-focus laser head.

In the implementation process, the second multi-beam splitting prism is arranged, and the adjusting and measuring device can be used for controlling the second multi-beam splitting prism to move along the circumferential center of the multi-focus laser head, so that the relative positions of the second multi-beam splitting prism and the first multi-beam splitting prism are changed. By changing the relative positions of the first multi-beam splitting prism and the second multi-beam splitting prism, the number of light beams formed by incident light correspondingly can be adjusted, the adjustment flexibility of the number of focuses output by the multi-focus laser is improved, and the application scene of the multi-focus laser is further increased.

In one embodiment, the multi-beam splitting assembly further comprises a first elastic element, a plurality of first guide grooves are formed in the second beam splitting adjustment seat, one end of each first guide groove extends to the second multi-beam splitting prism, an adjustment measuring device is arranged in at least one first guide groove, the first elastic element is arranged in other first guide grooves except the adjustment measuring device, one end of each first elastic element is in contact with the second multi-beam splitting prism, and the first elastic element is configured to support the second multi-beam splitting prism.

In the implementation process, through setting up first elastic element, under the cooperation of first elastic element and adjustment measuring device, can realize that second many beam splitter prisms are to different direction adjustment, improve the flexibility of second many beam splitter prisms position adjustment.

In one embodiment, the plurality of light beams output one focus after passing through the focusing optical lens in case that the position of the second multi-beam prism is offset by 90 ° with respect to the first multi-beam prism, and the plurality of light beams output a plurality of focuses after passing through the focusing optical lens in case that the position of the second multi-beam prism is not offset by 90 ° with respect to the first multi-beam prism.

In the implementation process, the quantity of the output light beams of the incident light can be adjusted by adjusting the offset relation of the relative positions of the first multi-beam splitting prism and the second multi-beam splitting prism, so that the adjustment flexibility of the quantity of the output focuses of the multi-focus laser head is improved, and the application scene of the multi-focus laser head is increased.

In one embodiment, the collimating lens assembly comprises a first adjusting piece and an outer sleeve, wherein the first adjusting piece is arranged inside the outer sleeve, one or more second adjusting pieces are arranged in the outer sleeve, one ends of the second adjusting pieces are in contact with the first adjusting piece, and the other ends of the second adjusting pieces extend to the outside of the outer sleeve, and the first adjusting pieces are configured to adjust the incident light angle under the action of the second adjusting pieces.

In the implementation process, through setting up first regulating part and second regulating part in the collimating mirror subassembly, and under the cooperation of first regulating part and second regulating part, adjust the incident angle of incident light, can make incident light get into this multifocal laser head according to the demand angle, increase the variety of incident light incidence. In addition, the incident angle of the incident light can be adjusted to be a vertical angle under the cooperation of the first adjusting piece and the second adjusting piece, so that the output focus is more uniform, and the focus quality is improved.

In one embodiment, the first adjustment member is made of metal and is configured to angularly deform under an external force.

In the implementation process, through setting up the structure that first regulating part is the angle deformation under the exogenic action, can realize the incident angle adjustment of incident light through adjusting the angle of first regulating part, improve the incident angle adjustment flexibility of incident light. In addition, because the metal material has better deformability, the deformability of the first adjusting piece can be improved and the adjusting effect can be improved by arranging the first adjusting piece to be made of the metal material.

In one embodiment, the collimating lens assembly comprises a sliding piece, a sliding piece base body and a plunger, wherein the sliding piece is arranged in the sliding piece base body, a second guide groove is formed in the sliding piece base body, one end of the second guide groove extends to the sliding piece, the plunger is arranged in the second guide groove, one end of the plunger is in contact with the sliding piece, and the plunger is configured to control the sliding piece to move in a plane parallel to the focusing optical lens.

In the implementation process, the sliding piece and the plunger are arranged in the collimating lens assembly, the plunger is in contact with the sliding piece, and then the sliding piece can move in a plane parallel to the focusing optical lens by applying external force to the plunger, so that a focus comes out of the center of the nozzle, and the focus output accuracy is improved.

In one embodiment, the collimating lens assembly further comprises a second elastic element, a plurality of second guide grooves are arranged in the sliding piece base body, one end of each second guide groove extends to the sliding piece, the plunger is arranged in the second guide groove parallel to one side of the plane of the focusing optical lens, the second elastic element is arranged in the second guide groove parallel to the other side of the plane of the focusing optical lens, one end of the second elastic element is in contact with the sliding piece, and the second elastic element is configured to support the sliding piece.

In the implementation process, the second elastic element is arranged on the collimating mirror assembly and can be used for supporting the sliding piece, and in the process of adjusting the sliding piece through the plunger, the position adjustment of the sliding piece in different directions can be realized under the cooperation of the second elastic element, so that the flexibility of the position adjustment of the sliding piece is improved.

In one embodiment, the laser head comprises a collimating mirror assembly, an adjusting assembly, a rotating piece, a switching piece and a focusing protection assembly, wherein the adjusting assembly is arranged between the collimating mirror assembly and the multi-beam splitting assembly, the adjusting assembly comprises a fixed seat body, an adjusting knob, the rotating piece and the switching piece, the rotating piece is connected with the switching piece, the switching piece is connected with the multi-beam splitting assembly and the focusing protection assembly, the adjusting knob is arranged on the fixed seat body and is configured to do circular motion around the center of the adjusting knob, the rotating piece is configured to do rotary motion along with the adjusting knob, and the multi-beam splitting assembly and the focusing protection assembly are configured to do coaxial rotary motion along the center of the multi-focus laser head along with the rotating piece.

In the implementation process, through setting up adjusting part, and this adjusting part connects many beam split components and focus protection subassembly for when this adjusting part carries out rotary adjustment through adjust knob, this many beam split components and focus protection subassembly also can follow rotary motion, and then make the position of a plurality of focuses that the nozzle comes out can wholly adjust simultaneously, improves focus adjustment efficiency.

In one embodiment, the focusing protection assembly further comprises a protection lens and a protection lens base body, wherein the protection lens base body is arranged on one side, far away from the multi-beam-splitting assembly, of the focusing base body, and the protection lens is arranged in the protection lens base body.

In the realization process, residues in the processing process can be prevented from entering the multi-focus laser head by arranging the protective lenses, the damage of the residues to the focusing lenses is avoided, and the service life of the multi-focus laser head is prolonged.

In order to make the above objects, features and advantages of the present application more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a three-dimensional schematic diagram of a multi-focus laser head according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a multi-focal laser head according to an embodiment of the present application;

FIG. 3 is a schematic three-dimensional diagram of a multi-beam splitter according to an embodiment of the present application;

fig. 4 is a schematic diagram of a second multi-beam splitter prism in the multi-beam splitter assembly according to an embodiment of the present application;

fig. 5 is a schematic diagram illustrating a first adjusting member in a multi-beam splitter assembly according to an embodiment of the present application;

FIG. 6 is a schematic view illustrating a sliding member arrangement in a collimator lens assembly according to an embodiment of the present application;

FIG. 7 is a schematic three-dimensional view of a collimating mirror assembly according to an embodiment of the present application;

FIG. 8 is a three-dimensional schematic view of an adjustment assembly according to an embodiment of the present application;

FIG. 9 is a three-dimensional schematic diagram of a focus protection assembly according to an embodiment of the present application;

Fig. 10 is a schematic view of each lens setting in a multi-focal laser head according to an embodiment of the present application;

Fig. 11 is a schematic diagram of an incident light beam passing through the multi-focal laser head to output multi-focal light beams.

The figure illustrates a 1-collimating lens assembly, a 101-collimating compound optical lens, a 102-fiber interface, a 103-second adjustment member, a 106-external sleeve, a 107-first adjustment member, a 108-slide member, a 109-slide member seat, a 104-plunger, a 110-second elastic member, a 111-collimating lens seat, a 2-adjustment assembly, a 201-fixed seat body, a 202-rotating member, a 203-adjustment knob, a 204-adapter member, a 3-multi-beam-splitting assembly, a 301-first multi-beam-splitting prism, a 302-second multi-beam-splitting prism, a 303-first beam-splitting mirror seat, a 304-second beam-splitting mirror seat, a 305-adjustment measuring device, a 306-first elastic member, a 307-second beam-splitting mirror seat, a 4-focus protection assembly, a 401-focus optical lens, a 402-protection lens, a 403-focus seat body, a 405-protection lens seat body, and a 406-nozzle.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

The field of laser texturing is a professional field related to high-tech applications, and mainly focuses on processes and techniques for texturing a material surface using laser technology. The prior stage in the laser texturing field has the following technical problems:

1. The market basically adopts a single-focus laser head to take charge of a laser texturing processing technology, and has the problem of low texturing processing efficiency.

2. The roughening point distance is not well controlled, the XY platform motion adjusting device is often needed to be additionally arranged for realizing, the mechanical device is complex and tedious in structure, the technical level requirements on production line operators are very high, the operation is complex, and the production efficiency is greatly affected. The roughening point spacing is not well controlled, so that the roughening pits on the surface of the workpiece are disordered and irregular, the surface roughness is uneven, and the roughening quality effect is not ideal.

In view of the above, the present application proposes a multi-focal laser head, in which a first multi-beam prism and a focusing optical lens are provided, wherein the first multi-beam prism can be used to split incident light into a plurality of light beams, and the focusing optical lens can focus the plurality of light beams, respectively, to form a plurality of focal states. Through the cooperation of first many beam splitter prism and focusing optical lens, can realize the multifocal output, improve the machining efficiency of laser.

Fig. 1 and 2 are schematic diagrams of a multi-focus laser head according to an embodiment of the present application, which includes a collimator lens assembly 1, a multi-beam splitter assembly 3, and a focus protection assembly 4.

The multi-beam splitting assembly 3 is here arranged between the collimator assembly 1 and the focus protection assembly 4. The multi-beam splitter assembly 3 includes a first multi-beam splitter prism 301 and a first beam splitter base 303, and the focus protection assembly 4 includes a focus optical lens 401 and a focus base 403.

As shown in fig. 3, the first multi-beam splitter 301 is fixedly disposed in the first beam splitter base 303, and the focusing optical lens 401 is fixedly disposed in the focusing base 403.

Wherein, the end of the collimating lens component 1 far away from the multi-beam-splitting component 3 is provided with a laser. The collimator assembly 1 is configured to receive incident light emitted by a laser and to transmit the incident light to the multi-beam-splitting assembly 3. The first multi-splitting prism 301 in the multi-splitting assembly 3 is configured to split incident light into a plurality of light beams and transmit the light beams to the focusing optical lens 401. The focusing optical lens 401 is configured to focus the plurality of light beams transmitted by the first multi-beam prism 301, respectively, to form a plurality of focus states.

The first multi-splitting prism 301 is an optical device that splits incident light into a plurality of light beams at different wavelengths using refractive and dispersive properties of the prism and allows the light beams to pass through the prism at a certain transmission ratio.

It will be appreciated that when incident light (including light of multiple wavelengths) is incident on the first multi-splitting prism 301, light of different wavelengths will be deflected to different extents, thereby spatially forming a series of spectral lines arranged in wavelength order. Meanwhile, the inclined plane inside the first multi-beam prism 301 may reflect the light, change the propagation direction of the light, and further divide the incident light into a plurality of light beams.

In one embodiment, the first multi-beam prism 301 may be a four-beam transmissive prism. The quarter-wave transmissive prism may be used to split incident light into a plurality of light beams.

Alternatively, the first multi-beam splitter prism 301 may be a beam splitter prism, a triple beam splitter prism, a quarter beam splitter prism, a pentabeam splitter prism, or the like. The first multi-beam splitter prism 301 may be selected according to the actual situation.

The focusing optical lens 401 is an optical element that uses the refraction principle of a lens to converge incident light at a certain point (i.e., focal point) behind the lens, or to change parallel light into converging light after passing through the lens.

As will be appreciated, in the case of operation of the multi-focal laser head, incident light emitted by the laser is received by the collimator assembly 1 and transmitted through the collimator assembly 1 to the multi-beam splitter assembly 3, and the first multi-beam splitter prism 301 in the collimator assembly 1 splits the incident light into a plurality of light beams and transmits the light beams to the focus protection assembly 4. The focusing optical lens 401 in the focus protection assembly 4 focuses the plurality of light beams, respectively, to form a plurality of focus states, and transmits the formed plurality of focuses to the outside of the multi-focus laser head.

In the above implementation, by providing the first multi-beam prism 301 and the focusing optical lens 401 in the multi-focal laser head, where the first multi-beam prism 301 may be used to split the incident light into a plurality of light beams, the focusing optical lens 401 may focus the plurality of light beams, respectively, to form a plurality of focal states. By matching the first multi-beam splitter prism 301 and the focusing optical lens 401, multi-focus output can be realized, and the processing efficiency of laser light can be improved.

In one possible implementation, as shown in fig. 4, the multi-beam splitting assembly 3 further includes a second multi-beam splitting prism 302, a second beam splitting mount 307, a second beam splitting mount 304, and an adjustment measurement device 305.

The second multi-beam splitter prism 302 is disposed inside the second beam splitter base 307, a first guide groove is disposed in the second beam splitter adjusting base 304, one end of the first guide groove extends to the second multi-beam splitter prism 302, an adjusting and measuring device 305 is disposed in the first guide groove, and one end of the adjusting and measuring device 305 is in contact with the second multi-beam splitter prism 302.

The second multi-splitting prism 302 is also an optical device that uses the refraction and dispersion characteristics of the prism to split incident light into multiple beams at different wavelengths and allow the beams to pass through the prism at a certain transmission ratio. The second multi-beam splitter prism 302 and the first multi-beam splitter prism 301 may be the same device or different devices. The types of devices of the second multi-beam splitter prism 302 and the first multi-beam splitter prism 301 may be selected according to actual situations.

In one embodiment, the second multi-beam prism 302 may be a four-beam transmissive prism. The quarter-wave transmissive prism may be used to split incident light into a plurality of light beams.

Alternatively, the second multi-beam splitter prism 302 may be a beam splitter prism, a three-beam splitter prism, a four-beam splitter prism, a five-beam splitter prism, or the like. The second multi-beam splitter prism 302 may be selected according to the actual situation.

Wherein the second multi-beam prism 302 is configured to cooperate with the first multi-beam prism 301 to adjust the beam of incident light.

The adjustment measurement device 305 described above is configured to control the movement of the second multi-beam prism 302 along the center of circumference of the multi-focal laser head. The adjustment measurement device 305 may also be used to measure the rotational distance of the second multi-beam prism 302.

In one embodiment, the adjustment measurement device 305 is a micrometer micro-probe.

It should be appreciated that, since one end of the adjustment measuring device 305 is in contact with the second multi-beam splitter prism 302, by applying an external force to the end of the adjustment measuring device 305 remote from the second multi-beam splitter prism 302, the external force can be transmitted to the adjustment measuring device 305 through the second multi-beam splitter prism 302, so that the second multi-beam splitter prism 302 moves along the center of circumference of the multi-focus laser head under the action of the external force. In addition, since the position of the first multi-beam splitter prism 301 is relatively fixed, the relative position between the second multi-beam splitter prism 302 and the first multi-beam splitter prism may change during the circular motion of the second multi-beam splitter prism 302. By changing the relative positional relationship between the first multi-split prism 301 and the second multi-split prism 302, the number of beams of incident light can be adjusted with the cooperation of the first multi-split prism 301 and the second multi-split prism 302.

In one embodiment, the center points of the first and second multi-beam splitting prisms 301 and 301 are on the same straight line.

Optionally, the end of the adjustment measurement device 305 remote from the second multi-beam splitting prism 302 extends outside the multi-focal laser head housing.

In the above implementation process, by providing the second multi-beam prism 302 and the adjustment measurement device 305, the adjustment measurement device 305 can be used to control the second multi-beam prism 302 to move along the circumferential center of the multi-focus laser head, so that the relative positions of the second multi-beam prism 302 and the first multi-beam prism 301 are changed. By changing the relative positions of the first multi-beam splitter prism 301 and the second multi-beam splitter prism 302, the number of light beams formed by the incident light can be adjusted, the flexibility of adjusting the number of focuses output by the multi-focus laser is improved, and the application scene of the multi-focus laser is further increased.

In one possible implementation, as shown in fig. 4, the multi-beam splitting assembly 3 further comprises a first elastic element 306.

The second beam splitter adjusting seat 304 is provided with a plurality of first guiding grooves, and one end of each first guiding groove extends to the second beam splitter prism 302.

In one embodiment, the adjustment measuring device 305 is arranged in at least one first guide groove, and the first elastic element 306 is arranged in the other first guide groove than the adjustment measuring device 305.

Here, one end of the first elastic member 306 is in contact with the second multi-split prism 302, and the first elastic member 306 is configured to support the second multi-split prism 302.

Illustratively, the second beam splitter adjusting seat 304 has 4 first guide grooves disposed therein, and the 4 first guide grooves are disposed in four opposite directions of the second beam splitter adjusting seat 304, respectively. Wherein, an adjusting and measuring device 305 is arranged in one first guiding groove, and first elastic elements 306 are arranged in the other 3 first guiding grooves.

The first elastic element 306 may be a spring, rubber, high resilience sponge, etc., and the specific structure of the first elastic element 306 may be selected according to practical situations.

It will be appreciated that the second multi-beam prism 302 will move under the influence of external forces as the adjustment measuring device 305 adjusts the second multi-beam prism 302. At this time, the second multi-beam prism 302 may transmit the external force to the elastic member, and the elastic member is pressed to obtain a movement space, thereby adjusting the relative positions of the second multi-beam prism 302 and the first multi-beam prism 301. In addition, if the position of the second multi-beam splitter prism 302 needs to be restored, the external force can be removed, the elastic element can rebound under the condition of no external force, and the restoration of the second multi-beam splitter prism 302 can be automatically realized.

In addition, when the external force applied by the adjustment measuring device 305 is too large during the adjustment of the second multi-beam splitter prism 302, the external force needs to be properly reduced. If the external force is reduced, the elastic element will rebound, and then drive the second multi-beam splitter prism 302 to retract.

In the above implementation process, by setting the first elastic element 306, under the cooperation of the first elastic element 306 and the adjustment measuring device 305, the second multi-beam prism 302 can be adjusted in different directions, so as to improve the flexibility of adjusting the position of the second multi-beam prism 302.

In one possible implementation, the plurality of light beams output one focal point via the focusing optical lens 401 in the case where the position of the second multi-beam prism 302 is offset by 90 ° with respect to the first multi-beam prism 301, and the plurality of light beams output a plurality of focal points via the focusing optical lens 401 in the case where the position of the second multi-beam prism 302 is offset by not 90 ° with respect to the first multi-beam prism 301.

It will be appreciated that when the second multi-beam prism 302 is positioned at 90 ° offset relative to the first multi-beam prism 301, the entrance and exit faces of the two prisms will form a perpendicular relationship. The incident light is first split into a plurality of directional light beams by passing through the first multi-splitting prism 301. These beams then enter the second multi-beam prism 302, and the direction of propagation of these beams will again change due to the 90 deg. offset of the prism. In the second multi-beam prism 302, after being offset by 90 °, the multiple light beams from the first multi-beam prism 301 will propagate at a certain angle and path. When these beams meet inside the prism or at the exit interface, they may overlap, forming one beam. The light beam output through the second multi-beam prism 302 passes through the focusing optical lens 401 and then is output as a focal point.

In the case where the second multi-beam prism 302 is not 90 ° offset with respect to the first multi-beam prism 301, light is split into a plurality of light beams when it passes through the first multi-beam prism. These beams then enter a second multi-beam splitter prism whose position is offset relative to the first prism. Since the offset angle of the second prism is not 90 °, this causes a change in the propagation path of the incident beam in the second prism, so that the outgoing beam is dispersed at a different angle.

It can be understood that the incident light beam from the collimator assembly 1 is parallel light, the light beam from the first multi-beam prism 301 is independent, and when the position of the second multi-beam prism 302 relative to the first multi-beam prism 301 is just 90 degrees offset, the light beam from the focusing optical lens 401 is in a focus state. When the measuring device 305 is rotated, the second multi-beam splitter prism 302 is rotated along the circumference center, and the position of the second multi-beam splitter prism 302 relative to the first multi-beam splitter prism 301 is not 90 degrees, and the light beam passes through the focusing optical lens 401 and then gradually evolves from a focus state to a multi-focus state. And the focal length and the distance of the sides are equal, and the corresponding four focal distance and the side length can be set according to the actual roughening process requirement. So that the backfilling effect of the pits on the laser roughened surface is regular and orderly, and the surface roughness is more uniform. The quality and the efficiency of the laser texturing processing surface can be greatly improved.

In the implementation process, the number of output beams of the incident light can be adjusted by adjusting the offset relation of the relative positions between the first multi-beam splitter prism 301 and the second multi-beam splitter prism 302, so that the flexibility of adjusting the number of output focuses of the multi-focus laser head is improved, and the application scene of the multi-focus laser head is increased.

In one possible implementation, as shown in FIG. 5, the collimator lens assembly 1 includes a first adjustment member 107 and an external sleeve member 106.

Wherein the first adjusting member 107 is arranged inside the outer sleeve 106, wherein one or more second adjusting members 103 are arranged in the outer sleeve 106, 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 outside the outer sleeve 106.

The first regulating member 107 here is provided therein with a light hole through which incident light passes. After receiving the incident light, the collimator assembly 1 enters the multi-beam splitter assembly 3 through the light aperture.

The second adjusting member 103 extends through a portion of the outer sleeve 106, and one end of the second adjusting member 103 contacts the first adjusting member 107, and the other end extends to the outside of the outer sleeve 106.

Wherein the first adjusting member 107 is configured to adjust the angle of incident light by the second adjusting member 103.

It can be appreciated that when the first adjusting member 107 needs to be adjusted, an external force can be applied to one end of the second adjusting member 103 extending to the external sleeve 106, the external force is transmitted to the first adjusting member 107 through the second adjusting member 103, and the first adjusting member 107 deforms under the action of the external force, so that the position of the light hole changes, and the incident angle of the incident light is realized.

The first adjusting member 107 is a member which is deformed by an external force. For example, parts of materials such as rubber, plastic, metal, etc. The specific material of the first adjusting member 107 may be selected according to the actual situation.

The second adjusting member 103 is a member that can be telescopically adjusted. Such as adjusting screws, telescoping rods, etc. The second adjusting member 103 may be selected according to the actual situation.

In one embodiment, the second adjusting members 103 are plural, and the plural second adjusting members 103 are disposed in plural directions of the first adjusting member 107. For example, the number of the second adjusting members 103 is 4, and the 4 second adjusting members 103 are disposed at four corners of the first adjusting member 107, respectively.

Illustratively, as shown in fig. 5, the second adjusting member 103 is 4 mushroom head adjusting screws, and every 2 mushroom head adjusting screws of the 4 mushroom head adjusting screws are disposed diagonally. Through adjusting 4 mushroom head adjusting screw diagonal direction, can make first regulating part 107 take place angle deformation, and then reach incident angle regulation effect.

In the implementation process, the first adjusting piece 107 and the second adjusting piece 103 are arranged in the collimating mirror assembly 1, and the incident angle of the incident light is adjusted under the cooperation of the first adjusting piece 107 and the second adjusting piece 103, so that the incident light enters the multi-focus laser head according to the required angle, and the incident diversity of the incident light is increased. In addition, the incident angle of the incident light can be adjusted to be a vertical angle under the cooperation of the first adjusting member 107 and the second adjusting member 103, so that the output focus is more uniform, and the focus quality is improved.

In one possible implementation, the material of the first adjustment member 107 is metal.

Wherein the first regulating member 107 is configured to angularly deform under an external force.

Alternatively, the first adjusting member 107 may be made of aluminum, steel, aluminum alloy, copper alloy, or the like, and the specific material of the first adjusting member 107 may be selected according to practical situations.

It will be appreciated that, as shown in fig. 5, when the first adjusting member 107 obtains an external force, the first adjusting member 107 deforms under the external force, so that the angle of the light hole in the first adjusting member 107 changes. After entering the collimator lens assembly 1, the incident light needs to pass through the light hole in the first adjuster 107, and thus the incident angle of the incident light also changes.

In the above implementation process, by setting the first adjusting member 107 to be a structure that is angularly deformed under the action of external force, the incident angle adjustment of the incident light can be achieved by adjusting the angle of the first adjusting member 107, so as to improve the flexibility of the incident angle adjustment of the incident light. In addition, since the metal material has a good deformability, the deformability of the first adjusting member 107 can be improved and the adjusting effect can be improved by providing the first adjusting member 107 as the metal material.

In one possible implementation, as shown in FIG. 6, the collimator lens assembly 1 includes a slider 108, a slider housing 109, and a plunger 104.

The sliding piece 108 is arranged in the sliding piece base 109, a second guide groove is formed in the sliding piece base 109, one end of the second guide groove extends to the sliding piece 108, a plunger 104 is arranged in the second guide groove, and one end of the plunger 104 is in contact with the sliding piece 108.

The slider 108 and the slider housing 109 are disposed in a plane parallel to the focusing optical lens 401. The slider 108 is configured to slide on a plane parallel to the focusing optical lens 401.

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

As can be appreciated, by applying an external force to an end of the plunger 104 remote from the slider 108, the external force is transmitted through the plunger 104 to the slider 108, the slider 108 slides on a plane under the force of the external force, and a light hole for passing light is provided in the slider 108. As the slide 108 slides, the aperture in the slide 108 moves with it, which in turn causes the aperture to be aligned with the nozzle 406 such that the focal point is centered out of the nozzle 406.

In one embodiment, the collimating lens assembly 1 includes a collimating compound optical lens 101 and a collimating lens holder 111, where the collimating compound optical lens 101 is fixedly disposed within the collimating lens holder 111. The incident light is configured to form a parallel light beam by the collimating composite optical lens 101.

The collimating lens holder 111 is fixed with the sliding member 108, and the collimating lens holder 111 is disposed at the lower end of the middle portion of the sliding member 108. When the slide 108 moves, the collimating composite optical lens 101 is moved and adjusted in a plane parallel to the focusing optical lens 401, so that the focal point comes out of the center of the nozzle 406.

The manner in which the slide 108 is adjusted by the plunger 104 can be varied, and the principle of the adjustment of the slide 108 by the plunger 104 is illustrated by way of several examples:

In the first mode, the plunger 104 is directly connected to the slider 108, and the movement position of the slider 108 is adjusted by adjusting the length of the plunger 104 penetrating into the slider housing 109.

In the second mode, a second elastic element 110 may be further disposed in the second guide groove, and the moving position of the sliding member 108 is adjusted by adjusting the length of the plunger 104 penetrating into the sliding member seat 109 and simultaneously by the cooperation of the second elastic element 110.

The manner in which the plunger 104 adjusts the slide 108 described above is merely exemplary, and the particular manner in which the plunger 104 adjusts the slide 108 may be selected according to the circumstances.

In one embodiment, as shown in fig. 7, the collimator lens assembly 1 further includes a fiber interface 102 for receiving incident light. Wherein the incident light forms a parallel beam through the fiber interface 102.

In the above implementation, by providing the slider 108 and the plunger 104 in the collimator lens assembly 1, the plunger 104 is in contact with the slider 108, and thus the slider 108 can be moved in a plane parallel to the focusing optical lens 401 by applying an external force to the plunger 104, so that the focus comes out of the center of the nozzle 406, and the focus output accuracy is improved.

In a possible implementation, as shown in fig. 6, the collimator lens assembly 1 further includes a second elastic element 110.

Wherein a plurality of second guide grooves are provided in the slider housing 109, one end of each second guide groove extends to the slider 108, a plunger 104 is provided in the second guide groove parallel to one side of the plane of the focusing optical lens 401, a second elastic member 110 is provided in the second guide groove parallel to the other side of the plane of the focusing optical lens 401, and one end of the second elastic member 110 is in contact with the slider 108.

The second elastic member 110 may be a spring, rubber, high resilience sponge, etc., and the specific structure of the second elastic member 110 may be selected according to practical situations.

The second elastic member 110 is configured to support the slider 108.

It will be appreciated that the slide 108 will move under the influence of external forces as the plunger 104 adjusts the slide 108. At this time, the slider 108 may transmit the external force to the second elastic member 110, and the movement space is obtained by pressing the second elastic member 110, so that the slider 108 is moved in a plane parallel to the focusing optical lens 401. In addition, if the position of the sliding member 108 needs to be restored, the external force can be removed, and the second elastic element 110 can rebound without the external force, thereby automatically restoring the sliding member 108.

Furthermore, if the external force applied by the plunger 104 is too great during adjustment of the slide 108, it needs to be properly reduced. If the external force is reduced, the second elastic element 110 will rebound, and then drive the slider 108 to retract.

In the implementation process, by arranging the second elastic element 110 on the collimating lens assembly 1, the second elastic element 110 can be used for supporting the sliding piece 108, and in the process of adjusting the sliding piece 108 through the plunger 104, the position adjustment of the sliding piece 108 in different directions can be realized under the cooperation of the second elastic element 110, so that the flexibility of the position adjustment of the sliding piece 108 is improved.

In one possible implementation, the multi-focus laser head further comprises an adjustment assembly 2.

Wherein the adjusting component 2 is arranged between the collimating mirror component 1 and the multi-beam-splitting component 3. The adjusting assembly 2 is a rotary platform structure.

As shown in fig. 8, the adjusting assembly 2 herein includes a fixed seat body 201, an adjusting knob 203, a rotating member 202, and an adapter 204.

The rotating member 202 is connected with the adaptor 204, the adaptor 204 connects the multi-beam splitter assembly 3 and the focus protection assembly 4, and the adjusting knob 203 is disposed on the fixed seat 201. The holder body 201 is parallel to the plane of the focusing optical lens 401.

In one embodiment, the adjustment knob 203 is disposed perpendicular to the plane of the fixed base 201. The adjusting knob 203 is provided with an adjusting scale, and the adjusting knob 203 is operated to adjust the rotating member 202 and the adapter 204.

The adjustment knob 203 is here configured to move circumferentially around the center of the adjustment knob 203, and the rotation member 202 is configured to move rotationally with the adjustment knob 203.

The rotating member 202 is disposed on a surface of the fixed base 201 away from the collimator lens assembly 1, and the rotating member 202 is disposed on a plane parallel to the focusing optical lens 401. The rotary member 202 is coupled to the adjustment knob 203 and is configured to rotate as the adjustment knob 203 is rotated.

The adaptor 204 is disposed on a surface of the rotating member 202 away from the fixed base 201, and the adaptor 204 is disposed on a plane parallel to the focusing optical lens 401. The adapter 204 is configured to rotate with rotation of the rotating member 202.

In one embodiment, the side of the adaptor 204 remote from the rotator 202 is provided with a fixed connection configured to be fixedly connected to the multi-drop assembly 3. The end of the multi-beam splitter assembly 3 remote from the adaptor 204 is configured to be fixedly connected to the focus protection assembly 4.

Wherein the multi-beam-splitting assembly 3 and the focus protection assembly 4 are configured for coaxial rotational movement with the rotating member 202 along the center of the multi-focal laser head. So that the positions of the multiple foci from the nozzle 406 can be adjusted in their entirety at the same time.

It will be appreciated that the adjusting assembly 2 is a rotary platform structure, the fixed base 201 is fixed, and the adjusting knob 203 is disposed on the fixed base 201 to perform a circular motion, so that the rotating member 202 may perform a rotary motion. The rotating piece 202 is connected with the adapter piece 204, and the adapter piece 204 is connected with the multi-beam-splitting assembly 3 and the focusing protection assembly 4, so that the multi-beam-splitting assembly 3 and the focusing protection assembly 4 can coaxially rotate along the center of the laser head. Thereby enabling rotation of the overall positional relationship of the multiple foci exiting the nozzle 406. The backfilling effect of the pits on the laser roughened surface is regular and orderly, the surface roughness is more uniform, and the quality and the efficiency of the laser roughened processed surface can be improved.

In the above implementation process, by setting the adjusting component 2, and the adjusting component 2 connects the multi-beam splitter component 3 and the focus protection component 4, when the adjusting component 2 performs rotation adjustment through the adjusting knob 203, the multi-beam splitter component 3 and the focus protection component 4 can also perform rotation movement along with the rotation, so that the positions of a plurality of focuses coming out of the nozzle 406 can be integrally and simultaneously adjusted, and the focus adjustment efficiency is improved.

In one possible implementation, as shown in FIG. 9, the focus protection assembly 4 further includes a protective lens 402 and a protective lens housing 405.

The protective lens body 405 is disposed on a side of the focusing body 403 away from the multi-beam splitting assembly 3, and the protective lens 402 is disposed inside the protective lens body 405.

Optionally, a protective lens housing 405 is coupled to the focus housing 403.

In one embodiment, an air connection and an air passage are also provided in the focus protection assembly 4. The air pipe connector is fixed on the protective lens base 405, and is connected in series with the internal air circuit for accessing inert gas.

The multi-focus laser head is also provided with a nozzle 406, the nozzle 406 being arranged on the side of the protective lens 402 remote from the focusing housing 403. Wherein an inert gas is blown from nozzle 406 to the surface of the workpiece to place the roughened surface in oxidative blackening.

It will be appreciated that during laser texturing, residues may be left vertically up and possibly damage the focusing lens. By providing a protective lens 402, debris can be prevented from entering the focus lens surface, thereby protecting the focus lens.

It should be understood that, as shown in fig. 10, the collimating composite optical lens 101, the first multi-beam splitter prism 301, the second multi-beam splitter prism 302, the focusing optical lens 401, and the protective lens 402 in the multi-focal laser head in the embodiment of the present application are disposed in this order. Wherein the protective optic 402 is disposed at an end proximate to the nozzle 406 and the collimating compound optical lens 101 is disposed at an end distal to the nozzle 406.

In addition, fig. 10 is a schematic diagram of a beam of the incident light passing through the multi-focal laser head and outputting a single focal point, and as can be seen from fig. 10, the incident light passes through the first multi-beam splitter prism 301 to form a parallel beam, and then enters the first multi-beam splitter prism 301, and then passes through the first multi-beam splitter prism 301 to output a plurality of beams. At this time, since the second multi-beam prism 302 is offset by 90 ° with respect to the first multi-beam prism 301, the plurality of light beams are emitted in the same direction after passing through the second multi-beam prism 302, and then output a focal point after passing through the focusing optical lens 401.

Fig. 11 is a schematic diagram of a beam of the incident light passing through the multi-focal laser head and outputting multi-focal laser, and as can be seen from fig. 11, the incident light passes through the first multi-beam splitter prism 301 to form a parallel beam, and then enters the first multi-beam splitter prism 301, and passes through the first multi-beam splitter prism 301 to output multiple beams. At this time, since the position of the second multi-beam prism 302 is not 90 ° offset with respect to the first multi-beam prism 301, the plurality of light beams are emitted in a plurality of directions after passing through the second multi-beam prism 302, and then a plurality of focuses are output after passing through the focusing optical lens 401.

The adjustment of the single focus to multiple focuses of the nozzle 406 is realized by the laser path structure, and the adjustment of the distance between the multiple focuses is realized by the relative rotation of the lower multi-beam splitter prism along the center of the optical axis. The adjustment of the overall positional relationship of the plurality of focuses is achieved by rotating the assembly. The whole scheme can realize that the roughening point distances of a plurality of focuses and the whole position relation of the focuses can be easily adjusted, and has obvious improvement effect on the surface roughness uniformity, the roughening quality effect and the roughening processing efficiency.

In the implementation process, residues in the processing process can be prevented from entering the multi-focus laser head by arranging the protective lens 402, so that the residues are prevented from damaging the focusing lens, and the service life of the multi-focus laser head is prolonged.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application. It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.

Claims

1. The multi-focus laser head is characterized by comprising a collimating mirror assembly, a multi-beam splitting assembly and a focusing protection assembly, wherein the multi-beam splitting assembly is arranged between the collimating mirror assembly and the focusing protection assembly;

The multi-beam splitting assembly comprises a first multi-beam splitting prism and a first beam splitting mirror seat, and the focusing protection assembly comprises a focusing optical lens and a focusing seat body;

The collimating lens component 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 a plurality of light beams;

the focusing optical lens is fixedly arranged in the focusing seat body, and is configured to focus a plurality of light beams transmitted by the first multi-beam prism respectively so as to form a plurality of focus states.

2. The multi-focus laser head of claim 1 wherein the multi-beam splitting assembly further comprises a second multi-beam splitting prism, a second beam splitting mount adjustment mount, and an adjustment measurement device;

the second multi-beam splitting prism is arranged in the second beam splitting lens seat;

a first guide groove is formed in the second beam splitter adjusting seat, and one end of the first guide groove extends to the second multi-beam splitter prism;

The first guide groove is internally provided with the adjusting and measuring device, one end of the adjusting and measuring device is in contact with the second multi-beam prism, and the adjusting and measuring device is configured to control the second multi-beam prism to move along the circumferential center of the multi-focus laser head.

3. The multi-focal laser head of claim 2 wherein the multi-beam splitting assembly further comprises a first resilient element;

a plurality of first guide grooves are formed in the second beam splitter adjusting seat;

One end of each first guide groove extends to the second multi-beam splitting prism;

Wherein, at least one first guiding groove is provided with an adjusting and measuring device, and other first guiding grooves except the adjusting and measuring device are provided with the first elastic element;

One end of the first elastic element is in contact with the second multi-beam prism, and the first elastic element is configured to support the second multi-beam prism.

4. The multi-focal laser head of claim 2 wherein,

Outputting a plurality of light beams through the focusing optical lens into a focus under the condition that the position of the second multi-beam splitting prism relative to the first multi-beam splitting prism is offset by 90 degrees;

and under the condition that the position of the second multi-beam splitting prism relative to the first multi-beam splitting prism is not 90 degrees offset, a plurality of light beams output a plurality of focuses after passing through the focusing optical lens.

5. The multi-focal laser head of claim 1 wherein the collimator assembly includes a first adjustment member and an external kit;

the first adjusting piece is arranged inside the external sleeve;

one or more second adjusting pieces are arranged in the external sleeve, one ends of the second adjusting pieces are in contact with the first adjusting pieces, and the other ends of the second adjusting pieces extend to the outside of the external sleeve;

wherein the first adjusting member is configured to adjust an angle of incident light under the action of the second adjusting member.

6. The multi-focal laser head of claim 5 wherein,

The first adjusting piece is made of metal;

the first adjusting piece is configured to deform angularly under the action of external force.

7. The multi-focal laser head of claim 1 wherein the collimator assembly includes a slider, a slider housing and a plunger;

the sliding piece is arranged in the sliding piece seat body;

the sliding piece seat body is provided with a second guide groove, and one end of the second guide groove extends to the sliding piece;

the second guide groove is internally provided with the plunger, one end of the plunger is in contact with the sliding piece, and the plunger is configured to control the sliding piece to move in a plane parallel to the focusing optical lens.

8. The multi-focal laser head of claim 7 wherein the collimator assembly further comprises a second resilient element;

A plurality of second guide grooves are formed in the sliding piece seat body;

one end of each second guide groove extends to the sliding piece;

wherein the plunger is provided in the second guide groove parallel to one side of the plane of the focusing optical lens, and the second elastic element is provided in the second guide groove parallel to the other side of the plane of the focusing optical lens;

one end of the second elastic element is in contact with the slider, and the second elastic element is configured to support the slider.

9. The multi-focus laser head of any of claims 1-8, further comprising an adjustment assembly disposed between the collimator assembly and the multi-beam splitting assembly;

The adjusting component comprises a fixed seat body, an adjusting knob, a rotating piece and an adapter piece;

the rotating piece is connected with the adapter, and the adapter is connected with the multi-beam-splitting assembly and the focusing protection assembly;

the adjusting knob is arranged on the fixed seat body; the adjusting knob is configured to perform circular motion around the center of the adjusting knob, and the rotating piece is configured to perform rotary motion along with the adjusting knob;

wherein the multi-beam splitting assembly and the focus protection assembly are configured to perform coaxial rotational movement along the center of the multi-focus laser head with the rotating member.

10. The multi-focus laser head according to any one of claims 1 to 8, wherein the focus protection assembly further comprises a protection lens and a protection lens holder;

the protective lens base body is arranged on one side of the focusing base body far away from the multi-beam-splitting component;

the protective lens is arranged inside the protective lens seat body.