Lens adjusting equipment and laser processing head thereof

Abstract

The invention provides lens adjusting equipment and a laser processing head thereof. The lens adjusting equipment comprises a shell, an adjustable part, a lens containing part, a first adjusting device and a second adjusting device. The shell is surrounded by a plurality of shell inner walls in the shell, and a cavity is formed in the shell; the adjustable part is arranged in the cavity, and the lens accommodating part is arranged in the adjustable part; the first adjusting device is connected with the adjustable part through the shell; the first adjusting device is used for adjusting the position of the adjustable part on the plane where the lens extension plane is located through the abutting of the end part of the first adjusting device against the adjustable part; the second adjusting device penetrates through the shell and the adjustable part and is connected with the lens containing part, the position of the lens containing part in the direction perpendicular to the lens extension plane is adjusted, the lens can be adjusted in the direction of the lens extension plane and the direction perpendicular to the lens extension plane at the same time, and the simultaneous centering and focusing functions of the single lens are achieved. The size of the laser processing head is reduced, and miniaturization of the laser processing head is achieved.

Description

Technical Field

[0001] The present application relates to the field of laser processing technology, and in particular, to a lens adjustment device and a laser processing head thereof. Background Art

[0002] During the laser processing process, in order to prevent the laser beam from deviating from the nozzle center of the laser processing head and affecting the beam processing accuracy and quality, the laser processing head generally needs to use a centering mechanism to center the laser processing head to ensure that the center axis of the laser beam coincides with the mechanical center axis of the processing head, thereby improving the beam and processing quality; at the same time, in order to make the laser processing head adapt to different processing scenarios and workpieces, the laser head generally needs to be equipped with a focusing structure to change the spot size and energy density formed by the laser beam.

[0003] At present, the centering and focusing of the laser processing head are generally achieved by using a collimating lens in conjunction with a focusing lens, for example, using a collimating lens to focus and a focusing lens to center the laser, or using a collimating lens to center the laser and a focusing lens to focus the laser. However, this focusing method requires the configuration of an adjustment structure for both the collimating lens and the focusing lens, which results in a larger size of the designed laser processing head and makes it impossible to miniaturize the device. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a lens adjustment device and a laser processing head thereof, so as to solve the problem that the current laser processing head, which uses a collimating lens and a focusing lens to jointly achieve centering and focusing, has a large size of the laser processing head and cannot achieve miniaturization of the equipment.

[0005] In a first aspect, the present invention provides a lens adjustment device, which includes: a shell, an adjustable part, a lens holder, a first adjustment device and a second adjustment device; the shell is surrounded by a plurality of shell inner walls to form a cavity in the shell; the adjustable part is arranged in the cavity, and the lens holder is arranged in the adjustable part; wherein the lens holder is used to hold the lens; the first adjustment device is connected to the adjustable part through the shell; wherein the first adjustment device is configured to adjust the position of the adjustable part on the plane where the lens extension plane is located by abutting the adjustable part with its end; the second adjustment device runs through the shell and the adjustable part, and is connected to the lens holder; wherein the second adjustment device is configured to adjust the position of the lens holder in a direction perpendicular to the lens extension plane.

[0006] The lens adjustment device designed as above forms a cavity in the shell, and the adjustable part 20 is arranged in the shell cavity, the lens holding part is arranged in the adjustable part, and the lens is arranged in the lens holding part. Then, the position of the adjustable part in the lens extension plane is adjusted by the first adjusting device to achieve the adjustment of the relative position of the center of the adjustable part and the center of the shell. The lens holding part is arranged in the adjustable part, and the lens is arranged in the lens holding part. Therefore, the movement of the adjustable part drives the lens holding part and the lens to move, thereby adjusting the relative position of the center of the lens and the center of the shell to achieve the centering function; the second adjusting device adjusts the plane position of the lens holding part perpendicular to the lens extension plane, that is, the lens holding part can drive the distance between the lens and the imaging plane to be adjusted based on the adjustment of the second adjusting device, thereby achieving the focusing function, so that the designed lens adjustment device can simultaneously adjust the lens in the direction of the lens extension plane and the direction perpendicular to the lens extension plane, thereby achieving the simultaneous centering and focusing functions of a single lens, thereby reducing the size of the laser processing head and achieving the miniaturization of the laser processing head.

[0007] In an optional embodiment of the first aspect, the first adjustment device includes a rotation limit assembly and an adjustment assembly, the adjustment assembly abuts against the adjustable part through a shell, and the adjustment assembly is configured to abut the adjustable part through its end to adjust the position of the adjustable part on the plane where the lens extension plane is located; the rotation limit assembly is connected to the adjustable part through the shell, and the rotation limit assembly is configured to limit the rotation of the adjustable part along the lens extension plane.

[0008] In an optional embodiment of the first aspect, the shell includes a first shell member and a second shell member; the first end face of the first shell member is connected to the first end face of the second shell member, the first shell member is surrounded by multiple shell inner walls to form a first cavity in the first shell member, and the second shell member is surrounded by multiple shell inner walls to form a second cavity in the second shell member, the first cavity and the second cavity are opposite to each other, and the hollow area of ​​the first cavity is larger than the hollow area of ​​the second cavity; the adjustable part includes a loading component and a flange component connected to the loading component; wherein the area of ​​the flange component parallel to the lens extension plane is larger than the area of ​​the loading component parallel to the lens extension plane, the flange component is clamped in the first cavity, and the loading component is arranged in the second cavity; the adjustment component is abutted against the flange component through the first shell member, and the rotation limit component is connected to the flange component through the first shell member.

[0009] In the above-mentioned embodiment, the present scheme arranges the first cavity and the second cavity of different sizes in the shell, and arranges the flange assemblies and the loading assemblies of different sizes through the adjustable part, so that the adjustable part is clamped in the first cavity and the second cavity through the flange assembly, and then the adjustable part is limited and fixed in the shell in a direction perpendicular to the extension plane of the lens, thereby ensuring the firm fixation of the adjustable part through clever design.

[0010] In an optional embodiment of the first aspect, a first limiting hole is provided on the opposite end face of the first end face of the first shell member, and an adjustment hole is provided on the side end face of the first shell member; a first slot is provided on the first end face of the flange assembly, and the first limiting hole is opposite to the first slot; wherein the side end face of the first shell member represents an end face perpendicular to the first end face; the rotation limiting assembly includes a first limiting member, and the first limiting member is slidably arranged in the first slot of the flange assembly through the first limiting hole; the adjustment assembly includes an adjusting member, the adjusting member is arranged in the adjustment hole, and the adjusting member abuts against the side end face of the flange assembly, wherein the side end face of the flange assembly represents the end face of the flange assembly perpendicular to the extension plane of the lens; a first adjusting device is used to adjust the force applied to the flange assembly by adjusting the position of the adjusting member in the adjustment hole, wherein the force direction of the adjusting member on the flange assembly is in the same direction or has an angle with the sliding direction of the first limiting member.

[0011] In the above implementation mode, the rotation limit assembly and the adjustment assembly are designed to cooperate with each other, which can not only flexibly adjust the position of the lens, but also prevent the lens from excessive rotation, thereby ensuring the stability of the optical system.

[0012] In an optional implementation of the first aspect, the adjustment assembly further includes an elastic member and a top block; the top block is disposed in the first cavity, and the top block and the adjustment hole are disposed opposite to each other in a direction parallel to the extension plane of the lens, and the top block and the flange assembly are elastically connected via the elastic member.

[0013] In the above-mentioned embodiment, this scheme makes the adjustment of the adjustable part in the extension plane direction of the lens smoother by adding a top block and an elastic part, and makes the adjustable part and the adjusting part always abut against each other through the rebound characteristic, thereby preventing the adjustable part from loosening, thereby improving the smoothness and reliability of the adjustment.

[0014] In an optional embodiment of the first aspect, a second slot is provided on the first end face of the top block; a second limiting hole is provided on the end face opposite to the first end face of the first shell member, and the second limiting hole is opposite to the second slot; the rotation limiting assembly also includes a second limiting member, and the second limiting member can be slidably arranged in the second slot through the second limiting hole.

[0015] In the above implementation mode, the present solution limits the rotation of the adjustable member by the first limiting member and the second limiting member, thereby improving the firmness of the limiting.

[0016] In an optional implementation of the first aspect, the first limiting hole and the second limiting hole are directly opposite to each other along a direction parallel to an extension plane of the lens.

[0017] In the above embodiment, the first limiting hole and the second limiting hole are designed to face each other in a direction parallel to the extension plane of the lens, so that the sliding directions of the first limiting member and the second limiting member are consistent, thereby making the rotation limiting direction of the adjustable member consistent, further improving the firmness of the rotation limiting.

[0018] In an optional embodiment of the first aspect, the adjustment hole includes a first adjustment hole and a second adjustment hole; the first adjustment hole and the second adjustment hole are spaced apart on both sides of the first limiting hole; the adjustment member includes a first adjustment member and a second adjustment member; the first adjustment member is arranged in the first adjustment hole, and the second adjustment member is arranged in the second adjustment hole; wherein, the force direction of the first adjustment member and the second adjustment member on the flange assembly is arranged at an angle to the sliding direction of the first limiting member.

[0019] In the above-mentioned implementation mode, the present solution realizes accurate adjustment of the position of the adjustable member in the direction of the lens extension plane by means of the first adjustment member and the second adjustment member distributed on both sides of the first limiting hole.

[0020] In an optional embodiment of the first aspect, the second adjusting device includes a knob and a transmission pin connected to the knob, a mounting hole is provided on the shell member, a through hole is provided on the adjustable member, and a mounting groove is provided on the lens holder; the mounting groove is opposite to the through hole and the mounting hole, and the transmission pin can be slidably arranged in the mounting groove after passing through the mounting hole and the through hole, and the knob can be rotatably fixed on the shell; the transmission pin is used to apply a force to the lens holder in a direction perpendicular to the lens extension plane when the knob is rotated, so as to adjust the position of the lens holder in the direction perpendicular to the lens extension plane.

[0021] In the above implementation mode, the present solution utilizes a knob in conjunction with a transmission pin to conveniently and quickly implement vertical lens adjustment, which is simple to operate and has high adjustment accuracy.

[0022] In an optional implementation of the first aspect, the second adjustment device also includes a third limiter, which passes through the adjustable member and is connected to the lens holder, and the third limiter is configured to limit the movement distance of the lens holder in an axial direction perpendicular to the lens extension plane.

[0023] In an optional implementation of the first aspect, a third slot is provided on the adjustable part along a direction perpendicular to the extension plane of the lens, and a fourth slot is provided on the lens holding part along an axial direction. The third slot is opposite to the fourth slot, and the third limiting part is slidably disposed in the fourth slot through the third slot.

[0024] In the above embodiment, the present scheme vertically slides the third limiting member in the fourth slot, which on the one hand limits the rotation of the lens holder in the adjustable member, and on the other hand limits the up and down movement range of the lens holder in the adjustable member, thereby achieving the movement range and rotation limitation of the lens holder.

[0025] In a second aspect, the present invention provides a laser processing head, which includes a lens adjustment device and a lens as described in any optional embodiment of the first aspect, and the lens is arranged in a lens receiving part of the lens adjustment device.

[0026] The laser processing head designed as above includes the lens adjustment device of the first aspect. Therefore, the lens can be adjusted in the direction of the lens extension plane and in the direction perpendicular to the lens extension plane at the same time, thereby realizing the simultaneous centering and focusing functions of a single lens, thereby reducing the size of the laser processing head and realizing the miniaturization of the laser processing head. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A first structural schematic diagram of a lens adjustment device provided in an embodiment of the present application; Figure 2 A second structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Figure 3 A third structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Figure 4 A fourth structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Figure 5 A fifth structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Figure 6 A sixth structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of a knob provided in an embodiment of the present application; Figure 8 A seventh structural schematic diagram of the lens adjustment device provided in an embodiment of the present application; Fig. 9 A schematic diagram of the structure of a Z-shaped laser cutting head provided in an embodiment of the present application; Fig.10 This is a schematic diagram of the structure of a parallel light input laser cutting head provided in an embodiment of the present application.

[0029] Icons: A-lens; 1-lens adjustment device; 2-laser fiber input interface; 3-nozzle; 4-parallel light output fiber; 5-nozzle assembly; 10-housing; 110-cavity; 1110-first cavity; 1120-second cavity; 120-first housing member; 1210-first limiting hole; 1220-adjustment hole; 12210-first adjustment hole; 12220-second adjustment hole; 1230-second limiting hole; 130-second housing member; 1310-mounting hole; 20-adjustable member; 210-loading assembly; 2110-through hole; 2120-third card slot ;220-flange assembly;2210-first slot;30-lens holder;310-installation slot;320-fourth slot;40-first adjusting device;410-rotation limit assembly;4110-first limit member;4120-second limit member;420-adjusting assembly;4210-adjusting member;42110-first adjusting member;42120-second adjusting member;4220-elastic member;4230-top block;42310-second slot;50-second adjusting device;510-knob;520-transmission pin;530-third limit member;60-sealing ring. DETAILED DESCRIPTION

[0030] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0032] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0033] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0034] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0035] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0036] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0037] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0038] During the laser processing process, in order to prevent the laser beam from deviating from the nozzle center of the laser processing head and affecting the beam processing accuracy and quality, the laser processing head generally needs to use a centering mechanism to center the laser processing head to ensure that the center axis of the laser beam coincides with the mechanical center axis of the processing head, thereby improving the beam and processing quality; at the same time, in order to make the laser processing head adapt to different processing scenarios and workpieces, the laser head generally needs to be equipped with a focusing structure to change the spot size and energy density formed by the laser beam.

[0039] At present, the centering and focusing of the laser processing head are generally achieved by using a collimating lens in conjunction with a focusing lens, for example, using a collimating lens to focus and a focusing lens to center the laser, or using a collimating lens to center the laser and a focusing lens to focus the laser. However, this focusing method requires the configuration of an adjustment structure for both the collimating lens and the focusing lens, which results in a larger size of the designed laser processing head and makes it impossible to miniaturize the device.

[0040] Based on the above problems, the present application designs a lens adjustment device and a laser processing head thereof, which can simultaneously adjust the lens in the direction of the lens extension plane and the direction perpendicular to the lens extension plane, thereby realizing the simultaneous centering and focusing functions of a single lens, so that the other lens of the laser processing head using the lens adjustment device does not need to adjust the structure, thereby reducing the size of the laser processing head and realizing the miniaturization of the laser processing head.

[0041] Based on the above ideas, the present application first provides a lens adjustment device, such as Figure 1 As shown, the lens adjustment device includes a shell 10, an adjustable part 20, a lens holder 30, a first adjustment device 40 and a second adjustment device 50, wherein the shell 10 is surrounded by a plurality of shell inner walls, and a cavity 110 is formed in the shell 10, the adjustable part 20 is arranged in the cavity 110, the lens holder 30 is arranged in the adjustable part 20, and the lens holder 30 is used to hold the lens A.

[0042] In the lens adjustment device designed as above, the first adjustment device 40 is connected to the adjustable part 20 through the shell 10, and the first adjustment device 40 abuts against the adjustable part 20 through its end, and the first adjustment device 40 can adjust the position of the adjustable part 20 on the plane where the lens extension plane is located; the second adjustment device 50 runs through the shell 10 and the adjustable part 20, and is connected to the lens holding part 30 in the adjustable part 20, and the second adjustment device 50 can adjust the position of the lens holding part 30 in a direction perpendicular to the lens extension plane.

[0043] The lens extension plane refers to the plane where the lens itself is located, and the plane perpendicular to the lens extension plane refers to the extension plane of the lens optical axis, that is, the lens extension plane and the extension plane of the lens optical axis are perpendicular to each other. Figure 2As shown, the lens is arranged in the lens holder 30, and the plane where the lens itself is located (i.e., the lens extension plane) is the XY plane, and the plane where the lens optical axis is located is the Z direction. In this case, the first adjusting device 40 can adjust the position of the adjustable part 20 in the XY plane to achieve the adjustment of the relative position of the center of the adjustable part 20 and the center of the shell 10. Since the lens holder 30 is arranged in the adjustable part 20 and the lens is arranged in the lens holder 30, the movement of the adjustable part 20 drives the lens holder 30 and the lens to move, thereby adjusting the relative position of the center of the lens and the center of the shell 10 to achieve the centering function; the second adjusting device 50 adjusts the position of the lens holder 30 in the Z plane, that is, the lens holder 30 can move in the Z direction (lens optical axis direction) in the adjustable part 20 based on the adjustment of the second adjusting device 50, thereby driving the position of the lens in the Z direction to change accordingly, that is, the distance between the lens and the imaging plane can be adjusted based on the second adjusting device 50, thereby achieving the focusing function.

[0044] The lens adjustment device designed as above forms a cavity in the shell, and the adjustable part 20 is arranged in the shell cavity, the lens holding part is arranged in the adjustable part, and the lens is arranged in the lens holding part. Then, the position of the adjustable part in the lens extension plane is adjusted by the first adjusting device to achieve the adjustment of the relative position of the center of the adjustable part and the center of the shell. The lens holding part is arranged in the adjustable part, and the lens is arranged in the lens holding part. Therefore, the movement of the adjustable part drives the lens holding part and the lens to move, thereby adjusting the relative position of the center of the lens and the center of the shell to achieve the centering function; the second adjusting device adjusts the plane position of the lens holding part perpendicular to the lens extension plane, that is, the lens holding part can drive the distance between the lens and the imaging plane to be adjusted based on the adjustment of the second adjusting device, thereby achieving the focusing function, so that the designed lens adjustment device can simultaneously adjust the lens in the direction of the lens extension plane and the direction perpendicular to the lens extension plane, thereby achieving the simultaneous centering and focusing functions of a single lens, thereby reducing the size of the laser processing head and achieving the miniaturization of the laser processing head.

[0045] In an optional implementation manner of this embodiment, as a possible implementation manner, Figures 3 to 5As shown, the shell 10 designed in this scheme may include a first shell member 120 and a second shell member 130, the first end face of the first shell member 120 is connected to the first end face of the second shell member 130, the first shell member 120 is surrounded by multiple shell interiors to form a first cavity 1110 in the first shell member 120, and the second shell member 130 is surrounded by multiple shell interiors to form a second cavity 1120 in the second shell member 130, wherein, when the first shell member 120 and the second shell member 130 are connected, the first cavity 1110 and the second cavity 1120 are opposite, and the hollow area of ​​the first cavity 1110 is larger than the hollow area of ​​the second cavity 1120.

[0046] The adjustable part 20 designed in this scheme may include a loading component 210 and a flange component 220 connected to the loading component 210, wherein the area of ​​the flange component 220 parallel to the lens extension plane is larger than the area of ​​the loading component 210 parallel to the lens extension plane, the flange component 220 is clamped in the first cavity 1110, the loading component 210 is arranged in the second cavity 1120, and the lens holder 30 is arranged in the loading component 210.

[0047] In the implementation scheme of the above-mentioned design, the flange assembly 220 is provided on the adjustable part 20, so that the adjustable part 20 is clamped in the first cavity 1110 and the second cavity 1120, so that the adjustable part 20 is limited in the housing 10 by the flange assembly 220, thereby limiting the movement of the adjustable part 20 in the direction perpendicular to the extension plane of the lens (Z direction).

[0048] In the above-mentioned embodiment, the present scheme arranges the first cavity and the second cavity of different sizes in the shell, and arranges the flange assemblies and the loading assemblies of different sizes through the adjustable part, so that the adjustable part is clamped in the first cavity and the second cavity through the flange assembly, and then the adjustable part is limited and fixed in the shell in a direction perpendicular to the extension plane of the lens, thereby ensuring the firm fixation of the adjustable part through clever design.

[0049] In the optional implementation of this embodiment, as a possible implementation, please continue to refer to Figure 3 The first adjustment device 40 designed in this scheme may include a rotation limit assembly 410 and an adjustment assembly 420 . The adjustment assembly 420 abuts against the flange assembly 220 through the first shell member 120 , and the rotation limit assembly 410 is connected to the flange assembly 220 through the first shell member 120 .

[0050] In the above embodiment, the adjustment component 420 can adjust the position of the adjustable part 20 on the plane where the lens extension plane is located by abutting the flange component 220 at its end; the rotation limiting component 410 limits the rotation of the adjustable part 20 by connecting with the flange component 220.

[0051] Specifically, as a possible implementation method, please continue to refer to Figures 3 to 5 The rotation limit assembly 410 designed in this scheme may include a first limit member 4110, and the adjustment assembly 420 may include an adjustment member 4210. A first limit hole 1210 is provided on the opposite end face of the first end face of the first housing member 120, and an adjustment hole 1220 is provided on the side end face of the first housing member 120; a first clamping groove 2210 is provided on the first end face of the flange member 220, and the first limit hole 1210 is opposite to the first clamping groove 2210. The first limit member 4110 is slidably disposed in the first clamping groove 2210 of the flange member 220 through the first limit hole 1210, and the adjustment member 4210 is disposed in the adjustment hole 1220, and the adjustment member 4210 abuts against the side end face of the flange member 220. The side end face of the first housing member 120 refers to an end face perpendicular to the first end face of the first housing member 120, and the side end face of the flange member 220 refers to an end face of the flange member perpendicular to the lens extension plane.

[0052] The first adjusting device 40 designed as above, this scheme can change the magnitude of the force applied by the adjusting member 4210 on the flange assembly 220 by adjusting the position of the adjusting member 4210 in the adjusting hole 1220. Since the direction of the force applied by the adjusting member 4210 on the flange assembly is parallel to the direction of the lens extension plane, the position of the adjustable member 20 in the lens extension plane can be changed by the force applied by the adjusting member 4210. In the process of the adjusting member 4210 applying force, in order to prevent the adjustable member 20 from rotating, the first limit member 4110 designed in this scheme cooperates with the first slot 2210 of the flange assembly 220, so that the adjustable member 20 will only move along the sliding direction of the first limit member, thereby preventing the adjustable member from rotating.

[0053] As a specific implementation method, the adjusting member 4210 designed in the present scheme can be specifically a plunger, and the adjusting hole 1220 can be specifically a plunger hole. The plunger is arranged in the plunger hole, and the spherical surface of the plunger end abuts against the side end surface of the flange assembly 220. An external thread can be arranged on the outer surface of the plunger, and an internal thread that cooperates with the thread on the outer surface of the plunger can be arranged in the plunger hole. The plunger can cooperate with the external thread and the internal thread to adjust the position of the plunger in the plunger hole, thereby changing the magnitude of the force applied by the plunger to the flange assembly 220.

[0054] The first limiting member 4110 of the present invention may be a pin, the first limiting hole 1210 may be a pin hole, the first slot 2210 may be a waist slot, and the pin fixed in the pin hole may slide in the waist slot of the flange assembly 220, thereby realizing the rotation limitation of the adjustable member 20.

[0055] In the above-mentioned implementation mode, the present solution can flexibly adjust the positions of the adjustable part and the lens in the lens extension plane and prevent the adjustable part from excessive rotation through the cooperation between the rotation limit assembly and the adjustment assembly in the first adjustment device, thereby ensuring the stability of the optical system.

[0056] In an optional implementation of this embodiment, if Figure 4 and Figure 5 As shown, the adjustment assembly 420 designed in this solution also includes an elastic member 4220 and a top block 4230. The top block 4230 is disposed in the first cavity 1110, and the top block 4230 and the adjustment hole 1220 are disposed opposite to each other along a direction parallel to the lens extension plane. The top block 4230 is elastically connected to the flange assembly 220 through the elastic member 4220. The elastic member can be an elastic device such as a compression spring, a tension spring or a leaf spring.

[0057] In the implementation mode of the above design, the elastic member 4220 and the top block 4230 can ensure that the flange assembly 220 is always in contact with the adjusting member 4210. Specifically, since the top block 4230 and the adjusting hole 1220 are arranged relatively to each other in a direction parallel to the extending plane of the lens, the force applied by the adjusting member 4210 to the adjustable member 20 is in the direction of the top block 4230. When the adjusting member 4210 further penetrates into the adjusting hole 1220 and increases the force applied to the adjustable member 20, since the top block 4230 and the flange assembly 220 of the adjustable member 20 are connected through the elastic member 4220, Therefore, after the adjustable part 20 receives the force from the adjusting part 4210, it applies force to the elastic part, and the elastic part 4220 is compressed, so that the adjustable part 20 moves toward the top block 4230; when the adjusting part 4210 retracts from the adjusting hole 1220 to reduce the force on the adjustable part 20, the force applied by the adjusting part 4210 to the adjustable part 20 is reduced, and the force applied by the adjustable part 20 to the elastic part 4220 is also relatively reduced, and the elastic part 4220 rebounds, so that the adjustable part 20 moves toward the adjusting part 4210, so that the adjustable part 20 is always in contact with the adjusting part 4210.

[0058] In the implementation mode of the above-mentioned design, the top block 4230 and the elastic member 4220 are added to make the adjustment of the adjustable member in the extension plane direction of the lens smoother, and the rebound characteristic is used to make the adjustable member 20 always abut against the adjusting member 4210, so that the adjusting member 4210 and the adjustable member 20 make the adjustable member 20 loose, thereby improving the smoothness and reliability of the adjustment.

[0059] In an optional implementation manner of this embodiment, in order to further prevent the adjustable member 20 from rotating during the adjustment process, please continue to refer to Figures 3 to 5The rotation limiting assembly 410 designed in the present application may also include a second limiting member 4120, a second slot 42310 is provided on the first end surface of the top block 4230, a second limiting hole 1230 is provided on the opposite end surface of the first end surface of the first housing member 120, the second limiting hole 1230 is opposite to the second slot 42310, and the second limiting member 4120 is slidably disposed in the second slot 42310 through the second limiting hole 1230, so that the rotation of the adjustable member is limited by the first limiting member 4110 and the second limiting member 4120, thereby improving the firmness of the limit. The first limiting member 4110 and the second limiting member 4120 may be pins or other element forms, such as positioning columns, bolts, screws, etc.

[0060] Furthermore, in the present solution, the first limiting hole 1210 and the second limiting hole 1230 can be opposite to each other in a direction parallel to the extension plane of the lens, so that the sliding directions of the first limiting member 4110 and the second limiting member 4120 are consistent, thereby making the rotation limiting direction of the adjustable member consistent, further improving the firmness of the rotation limiting.

[0061] In an optional implementation of this embodiment, as a specific implementation, the number of the adjustment hole 1220 designed in this solution can be one. Specifically, the adjustment hole 1220 can be located in the same plane as the first limiting hole 1210 (the Y plane as shown in the figure), so that the force direction of the adjustment member 4210 on the flange assembly 220 can be in the same direction as the sliding direction of the first limiting member 4110. In this implementation, this solution can achieve the position adjustment of the adjustable member 20 in the direction of the lens extension plane through one adjustment hole 1220 and one adjustment member 4210, thereby achieving the purpose of simple structure and cost saving. Of course, the position of the adjustment hole 1220 can also be relatively inclined with the first limiting hole 1210, and the specific setting method can be adaptively adjusted according to actual conditions.

[0062] As another possible implementation, Figures 3 to 5 As shown, the number of adjustment holes 1220 designed in this scheme can also be two. Specifically, the adjustment holes may include a first adjustment hole 12210 and a second adjustment hole 12220. The first adjustment hole 12210 and the second adjustment hole 12220 are spaced apart on both sides of the first limiting hole 1210. The adjustment member 4210 includes a first adjustment member 42110 and a second adjustment member 42120. The first adjustment member 42110 is arranged in the first adjustment hole 12210, and the second adjustment member 42120 is arranged in the second adjustment hole 12220.

[0063] In the above-mentioned embodiment, the first adjustment hole 12210 and the second adjustment hole 12220 are both arranged at an angle to the sliding direction of the first limiter 4110. Thus, the adjustable member 20 can be accurately adjusted by the inclined first adjustment member 42110 and the second adjustment member 42120. Specifically, Figure 5 As shown, assuming that after adjusting the first adjusting member 42110, it is found that the center of the adjustable member 20 is biased to the right relative to the center of the shell 10, the second adjusting member 42120 can be adjusted to make the center of the adjustable member 20 gradually move to the left, thereby achieving more accurate and convenient adjustment of the adjustable member in the lens extension plane.

[0064] In an optional implementation of this embodiment, if Figure 6 As shown, the second adjustment device 50 of the present scheme may include a knob 510 and a driving pin 520 connected to the knob 510, wherein a mounting hole 1310 is provided on the housing 10, a through hole 2110 is provided on the adjustable member 20, and a mounting groove 310 is provided on the lens receiving member 30, wherein the mounting groove 310, the through hole 2110 and the mounting hole 1310 are opposite to each other, and specifically, the mounting hole 1310 may be specifically provided on the second housing member 130, and the through hole 2110 may be specifically provided on the loading assembly 210 of the adjustable member 20, wherein the driving pin 520 of the second adjustment device 50 may be slidably provided in the mounting groove 310 after passing through the mounting hole 1310 and the through hole 2110, and the knob 510 may be rotatably fixed on the second housing member 130. The knob may be provided on the housing 10 by means of equal height screws.

[0065] The second adjustment device 50 designed as above can rotate the knob 510 during adjustment. The rotation of the knob 510 drives the transmission pin 520 to rotate, so that the transmission pin 520 applies a force on the lens holder 30 in a direction perpendicular to the lens extension plane (Z direction), thereby adjusting the position of the lens holder 30 in the direction perpendicular to the lens extension plane.

[0066] Specifically, as a possible implementation, the knob 510 and the transmission pin 520 designed in this solution are as follows: Figure 7 As shown, the transmission pin 520 is arranged on the edge of the knob 510, so that the knob 510 will drive the transmission pin 520 to move when it is rotated. For example, when it is rotated to the right, the transmission pin 520 will abut against the upper surface of the mounting groove 310 and apply force to the mounting groove 310, thereby applying an upward force to the lens holder 30; when it is rotated to the left, the transmission pin 520 will abut against the lower surface of the mounting groove 310 and apply force to the mounting groove 310, thereby applying a downward force to the lens holder 30, thereby realizing the adjustment of the position of the lens holder 30 in the direction perpendicular to the lens extension plane.

[0067] Furthermore, the through hole on the loading assembly 210 of the present solution may be square-shaped, so that the transmission pin 520 can be avoided. When the knob 510 rotates, the lens holder 30 moves up and down, and the adjustable part moves in the XY plane, there will be no interference with the transmission pin 520 on the knob 510, thereby improving the reliability of lens adjustment. The mounting groove 310 on the lens holder 30 may be an arc-shaped groove, which can limit the rotation angle position of the knob.

[0068] In an optional implementation of this embodiment, please refer to Figure 5 and Figure 6 As shown, the second adjustment device 50 of the present invention further includes a third stopper 530, which penetrates the adjustable component 20 and is connected to the lens holder 30. Specifically, the third stopper 530 penetrates the loading assembly 210 and is connected to the lens holder 30. The third stopper 530 can limit the moving distance of the lens holder 30 in the axial direction perpendicular to the lens extension plane. The third stopper 530 can be a pin or other element form, such as a positioning column, a bolt, a screw, etc.

[0069] Specifically, as a possible implementation method, Figure 5 and Figure 6 As shown, a third slot 2120 is provided on the loading assembly 210 along a direction perpendicular to the lens extension plane, and a fourth slot 320 is provided on the lens holder 30 along an axial direction. The third slot 2120 is opposite to the fourth slot 320, and the third limiting member 530 is slidably disposed in the fourth slot 320 through the third slot 2120.

[0070] In the above embodiment, the third limiting member 530 slides vertically in the fourth slot 320, which on the one hand limits the rotation of the lens holder 30 in the adjustable member 20, and on the other hand limits the up and down movement range of the lens holder 30 in the adjustable member 20, thereby achieving the movement range and rotation limitation of the lens holder.

[0071] The second adjustment device designed as above utilizes the combination of the knob 510, the transmission pin 520 and the third stopper 530 to conveniently and quickly adjust the lens in the vertical direction, with simple operation and high adjustment accuracy.

[0072] In an optional implementation of this embodiment, if Figure 8 As shown, in this scheme, a sealing ring 60 can be set on the fitting surface between the first shell part 120 and the second shell part 130, and a sealing ring 60 can also be set on the opposite end surface of the first end surface of the first shell part 120 and the opposite end surface of the first end surface of the second shell part 130. A sealing ring 60 can also be set on the joint surface between the knob and the second shell part 130, so as to play a sealing and dust-proof role.

[0073] In addition, it should be noted that in the field of laser processing, lenses are usually made into round, spherical or cylindrical aspherical shapes, etc. The adjustable part 20 and lens holder 30 in the drawings shown in this scheme are both cylindrical in design. The purpose is to facilitate the understanding of this scheme and it cannot be regarded as a limitation on this scheme. The shapes of the adjustable part 20 and lens holder 30 described above can be adaptively adjusted according to the lenses used. For example, they can be prismatic or other structural forms. This application does not impose any restrictions on this. The adjustable part 20 and lens holder 30 only need to realize the functions mentioned above in this application.

[0074] For example, as shown in the drawings of the present application, the adjustable part 20 designed in the present scheme can be specifically a centering tube, and the lens receiving part 30 can be specifically a lens barrel. The cavity 110 opened in the shell 10 is a cylindrical cavity, the centering tube is arranged in the cylindrical cavity 110, and the lens barrel is arranged in the centering tube. The first adjusting device is connected to the centering tube through the shell, and adjusts the position of the centering tube in the radial direction. The second adjusting device passes through the shell and the centering tube and is connected to the lens barrel. The second adjusting device can adjust the position of the lens barrel in the axial direction, wherein the radial direction indicates the axial direction, that is, the plane direction of the lens extension plane described above, and the axial direction indicates the direction perpendicular to the lens extension plane.

[0075] Specifically, as shown in the drawings of the present application, the adjusting member 4210 can be abutted against the outer circumferential surface of the flange assembly 220 (the side end surface of the flange assembly 220 described above) through the adjusting hole 1220, and the position of the lens barrel in the lens extension plane is changed by applying force to the outer circumferential surface of the flange assembly by adjusting the adjusting member 4210, thereby realizing the centering function; the transmission pin 520 is driven to rotate by rotating the knob 510, so that the transmission pin 520 applies a force to the lens barrel in a direction perpendicular to the lens extension plane (Z direction), thereby adjusting the position of the lens barrel in the direction perpendicular to the lens extension plane, thereby realizing the focusing function.

[0076] The present application also provides a laser processing head, which may include the lens adjustment device 1 and the lens A of any optional embodiment described above, and the lens A is arranged in the lens receiving part 30 of the lens adjustment device 1. Specifically, the laser processing head designed in the present solution may be as follows: Fig. 9 The Z-shaped cutting head shown in the figure, the lens A of the Z-shaped cutting head can specifically be a collimating lens, the laser fiber input interface 2 of the Z-shaped cutting head receives the light beam and transmits it to the lens A in the lens adjustment device 1 and then emits it through the nozzle 3, and the lens adjustment device 1 designed in this scheme is used to center and focus the collimating lens, so that the cutting head is small in size and the processing restrictions are reduced.

[0077] The laser processing head designed in this scheme can also be Fig.10 The parallel light input laser cutting head shown in the figure adopts a focusing lens, and the parallel light output optical fiber 4 of the parallel light input laser cutting head transmits the received light beam to the lens A in the lens adjustment device 1 and then emits it through the nozzle assembly 5. The lens adjustment device 1 designed in this scheme is used to center and focus the focusing lens, and the adjustment mechanism is centralized, so that the cutting head is small in size and the processing restrictions are reduced.

[0078] The laser processing head designed as above includes the lens adjustment device described above. Therefore, the lens can be adjusted in the direction of the lens extension plane and in the direction perpendicular to the lens extension plane at the same time, thereby realizing the simultaneous centering and focusing functions of a single lens, thereby reducing the size of the laser processing head and realizing the miniaturization of the laser processing head.

[0079] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A lens adjustment device, characterized in that: The lens adjustment device comprises: a housing, an adjustable part, a lens receiving part, a first adjustment device and a second adjustment device; The shell is surrounded by a plurality of shell inner walls, forming a cavity in the shell; The adjustable part is arranged in the cavity, and the lens receiving part is arranged in the adjustable part; wherein the lens receiving part is used to receive the lens; The first adjusting device is connected to the adjustable member through the housing; wherein the first adjusting device is configured to adjust the position of the adjustable member on the plane where the lens extension plane is located by abutting the adjustable member with its end portion; The second adjusting device passes through the housing and the adjustable part, and is connected to the lens holder; wherein the second adjusting device is configured to adjust the position of the lens holder in a direction perpendicular to the lens extension plane.

2. The lens adjustment device according to claim 1, characterized in that: The first adjustment device comprises a rotation limiting assembly and an adjustment assembly, wherein the adjustment assembly abuts against the adjustable member through the housing, and the adjustment assembly is configured to abut against the adjustable member by its end to adjust the position of the adjustable member on the plane where the lens extension plane is located; The rotation limiting assembly is connected to the adjustable component via the housing, and the rotation limiting assembly is configured to limit the rotation of the adjustable component along the extension plane of the lens.

3. The lens adjustment device according to claim 2, characterized in that: The housing comprises a first housing member and a second housing member; The first end surface of the first shell member is connected to the first end surface of the second shell member, the first shell member is surrounded by a plurality of shell inner walls to form a first cavity in the first shell member, the second shell member is surrounded by a plurality of shell inner walls to form a second cavity in the second shell member, the first cavity and the second cavity are opposite to each other, and the hollow area of ​​the first cavity is larger than the hollow area of ​​the second cavity; The adjustable component includes a loading component and a flange component connected to the loading component; wherein the area of ​​the flange component parallel to the lens extension plane is larger than the area of ​​the loading component parallel to the lens extension plane, the flange component is clamped in the first cavity, and the loading component is arranged in the second cavity; The adjusting assembly is in contact with the flange assembly via the first shell component, and the rotation limiting assembly is connected to the flange assembly via the first shell component.

4. The lens adjustment device according to claim 3, characterized in that: A first limiting hole is provided on the end face opposite to the first end face of the first shell member, and an adjustment hole is provided on the side end face of the first shell member; a first clamping groove is provided on the first end face of the flange assembly, and the first limiting hole is opposite to the first clamping groove; wherein the side end face of the first shell member refers to an end face perpendicular to the first end face; The rotation limiting assembly includes a first limiting member, and the first limiting member is slidably disposed in the first clamping groove of the flange assembly through the first limiting hole; The adjustment assembly includes an adjustment member, the adjustment member is arranged in the adjustment hole, and the adjustment member abuts against the side end face of the flange assembly, wherein the side end face of the flange assembly refers to the end face of the flange assembly that is perpendicular to the extension plane of the lens; The first adjustment device is used to adjust the force applied by the adjustment member to the flange assembly by adjusting the position of the adjustment member in the adjustment hole, wherein the force direction of the adjustment member on the flange assembly is in the same direction or at an angle to the sliding direction of the first limit member.

5. The lens adjustment device according to claim 4, characterized in that: The adjustment assembly also includes an elastic member and a top block; The top block is arranged in the first cavity, and the top block and the adjustment hole are arranged opposite to each other along a direction parallel to the extending plane of the lens, and the top block and the flange assembly are elastically connected through the elastic member.

6. The lens adjustment device according to claim 5, characterized in that: A second slot is formed on the first end surface of the top block; a second position limiting hole is formed on the end surface opposite to the first end surface of the first shell member, and the second position limiting hole is opposite to the second slot; The rotation limiting assembly further includes a second limiting member, and the second limiting member is slidably disposed in the second clamping groove through the second limiting hole.

7. The lens adjustment device according to claim 6, characterized in that: The first limiting hole and the second limiting hole are opposite to each other along a direction parallel to the extending plane of the lens.

8. The lens adjustment device according to claim 4, characterized in that: The adjustment hole comprises a first adjustment hole and a second adjustment hole; The first adjustment hole and the second adjustment hole are spaced apart and distributed on both sides of the first limiting hole; The adjusting member includes a first adjusting member and a second adjusting member; the first adjusting member is arranged in the first adjusting hole, and the second adjusting member is arranged in the second adjusting hole; wherein the force direction of the first adjusting member and the second adjusting member on the flange assembly is arranged at an angle to the sliding direction of the first limiting member.

9. The lens adjustment device according to claim 1, characterized in that: The second adjustment device includes a knob and a transmission pin connected to the knob, a mounting hole is provided on the housing, a through hole is provided on the adjustable part, and a mounting groove is provided on the lens receiving part; The mounting groove is opposite to the through hole and the mounting hole, the transmission pin is slidably disposed in the mounting groove after passing through the mounting hole and the through hole, and the knob is rotatably fixed on the housing; The transmission pin is used to apply a force in a direction perpendicular to the lens extension plane to the lens holder when the knob is rotated, so as to adjust the position of the lens holder in the direction perpendicular to the lens extension plane.

10. The lens adjustment device according to claim 9, characterized in that: The second adjustment device also includes a third limiting member, which passes through the adjustable member and is connected to the lens holder, and the third limiting member is configured to limit the movement distance of the lens holder in the axial direction perpendicular to the lens extension plane.

11. The lens adjustment device according to claim 10, characterized in that: The adjustable part is provided with a third slot along a direction perpendicular to the extending plane of the lens, and the lens receiving part is provided with a fourth slot along an axial direction. The third slot is opposite to the fourth slot, and the third limiting part is slidably disposed in the fourth slot through the third slot.

12. A laser processing head, characterized in that: The laser processing head comprises the lens adjustment device according to any one of claims 1 to 11 and a lens, wherein the lens is disposed in a lens holder of the lens adjustment device.

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