Lens adjusting mechanism and laser nozzle

Abstract

The utility model belongs to the technical field of optical equipment, and discloses a lens adjusting mechanism and a laser nozzle. The lens adjusting mechanism comprises a lens support, a lens assembly, an elastic supporting assembly and an adjusting assembly. The lens is pushed to move through cooperation of the adjusting assembly and the elastic supporting assembly, a long pull rod and a screw assembly do not need to be arranged behind the lens, precious space in equipment cannot be occupied, and miniaturization design of the equipment is facilitated. Besides, the pushing force applied to the lens assembly by the elastic supporting assembly can change along with the change of the pushing force of the adjusting assembly all the time, so that the lens assembly can be adjusted in two opposite directions only by controlling the working state of the adjusting assembly, then control over a tiny position can be achieved, and the adjusting precision is high. In addition, compared with an existing adjustment mode adopting a pull-type structure, abrasion between mechanical assemblies is small, so that the adjustment precision is not prone to being reduced, meanwhile, the situation of unstable movement is not prone to being generated, and the optical performance can be guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to optical equipment technical field especially relates to a lens adjusting mechanism and laser nozzle. BACKGROUND

[0002] At present, in optical equipment (such as laser cutting head, laser welding head etc.), the position and angle adjustment of lens are crucial to the optical performance of equipment.

[0003] Traditional lens adjusting mechanism usually adopts pull type structure to adjust lens position, specifically, through screw rod, pull rod and other components, the lens is pulled to the predetermined position. For example, Chinese patent CN118682275A. However, this pull type structure has the following problems:

[0004] 1. Complex structure, large space occupation: pull type structure needs to set up longer pull rod and screw rod components behind the lens, which occupies the valuable space inside the equipment, is not conducive to the miniaturization design of equipment.

[0005] 2. Adjustment precision is limited: due to the limitation of mechanical structure, pull type structure has difficulty in controlling small displacement, and it is difficult to realize high-precision lens position adjustment.

[0006] 3. Mechanical wear and motion instability: during the pulling process, the wear between mechanical components will cause the adjustment precision to decline, and motion instability may occur, affecting the optical performance.

[0007] Therefore, the above problems need to be solved. UTILITY MODEL CONTENT

[0008] The utility model aims at providing a lens adjusting mechanism and laser nozzle, which saves time and effort, and has high adjustment precision, in addition, is conducive to the miniaturization design of equipment.

[0009] To achieve this purpose, the utility model adopts the following technical solutions:

[0010] A lens adjusting mechanism, comprising:

[0011] A lens support;

[0012] A lens assembly movably arranged on the lens support;

[0013] An elastic support assembly arranged on the lens support, the elastic support assembly is configured to elastically support one side of the lens assembly;

[0014] An adjusting assembly is arranged on the lens holder, the elastic support assembly and the adjusting assembly are respectively arranged on two opposite sides of the lens assembly, the adjusting assembly is configured to support the other side of the lens assembly and configured to apply a pushing force to the other side of the lens assembly and compress the elastic support assembly.

[0015] Preferably, two elastic support assemblies are arranged symmetrically about the center line of the lens assembly.

[0016] The number of adjusting assemblies corresponds to the number of elastic support assemblies.

[0017] The directions of the pushing forces of the two adjusting assemblies intersect.

[0018] Preferably, the adjusting assembly includes a pushing piece hinged to the lens holder, the pushing piece includes a matching part in sliding cooperation with the lens holder, and the adjusting assembly pushes the lens assembly through the pushing piece.

[0019] Preferably, the adjusting assembly further includes:

[0020] A servo motor including an output shaft capable of forward and reverse rotation;

[0021] A lead screw coaxially connected to the output shaft;

[0022] A guide sleeve coaxially sleeved on the lead screw and forming a guide channel with the lead screw;

[0023] A nut threadedly connected to the lead screw and in sliding cooperation with the guide channel, so that it can move axially along the lead screw, and the nut abuts against the side of the matching part away from the lens holder.

[0024] Preferably, the adjusting assembly further includes a first universal ball arranged on the nut, and the nut abuts against the matching part through the first universal ball.

[0025] Preferably, the adjusting assembly further includes a plurality of balls distributed on the inner wall of the guide sleeve, the plurality of balls are arranged in the axial direction of the guide sleeve, and the plurality of balls are covered on the outer periphery of the nut.

[0026] Preferably, the elastic support assembly includes:

[0027] An elastic telescopic member having one end connected to the lens holder;

[0028] A sleeve sleeved on the other end of the elastic telescopic member, the sleeve abuts against the lens assembly.

[0029] As preferably, the elastic supporting assembly further comprises a second universal ball arranged on the sleeve, and the sleeve abuts against the lens assembly through the second universal ball.

[0030] As preferably, the lens assembly is provided with a guide groove at the outer periphery, and the second universal ball is located in the guide groove and can roll along the guide groove.

[0031] A laser nozzle comprising a nozzle body and the lens adjusting mechanism, and the lens holder of the lens adjusting mechanism is arranged inside the nozzle body.

[0032] The beneficial effects of the present application are as follows:

[0033] 1. The lens is moved by the cooperation of the adjusting assembly and the elastic supporting assembly, and a long pull rod and a screw assembly do not need to be arranged behind the lens, so that the valuable space inside the equipment is not occupied, and the miniaturization design of the equipment is facilitated. In addition, the pushing force of the elastic supporting assembly on the lens assembly will change with the change of the pushing force of the adjusting assembly, so that the working state of the adjusting assembly only needs to be controlled to adjust the lens assembly in two opposite directions, thereby realizing the control of the micro position and improving the adjustment accuracy. In addition, compared with the existing pull type structure adjustment mode, the wear between mechanical components is less, so that the adjustment accuracy is not easily reduced, and the motion is not easily unstable, and the optical performance can be ensured.

[0034] 2. The laser nozzle comprising the lens adjusting mechanism is more convenient for adjusting the lens and has a smaller size. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a structural schematic view of the lens adjusting mechanism provided by the present application;

[0036] Figure 2 is a structural schematic view of the lens adjusting mechanism provided by the present application, in which the lens holder is removed;

[0037] Figure 3 is Figure 2 is an enlarged view of A in FIG. 1;

[0038] Figure 4 is a structural schematic view of a servo motor, a lead screw and a guide sleeve provided by the present application;

[0039] Figure 5 is a structural schematic view of the elastic supporting assembly provided by the present application;

[0040] Figure 6 is a structural schematic view of the lens assembly provided by the present application.

[0041] In the drawings:

[0042] 1. A lens holder;

[0043] 2. A lens assembly; 21. A guide slot;

[0044] 3. A resilient support assembly; 31. A resilient telescopic member; 32. A sleeve; 33. A second universal ball;

[0045] 4. An adjusting assembly; 41. A pushing member; 411. A matching part; 42. A servo motor; 43. A screw rod; 44. A guide sleeve; 441. A ball; 45. A nut; 46. A first universal ball. DETAILED DESCRIPTION

[0046] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the above-described accompanying drawings. It is being understood that the terminology used herein is for purpose of description and not of limitation.

[0047] In the present application, the terms "comprising", "containing", "having" or any other similar words are intended to encompass non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or other elements inherent to such a process, method, article or device. Without more limitations, the element defined by the phrase "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0048] In the present application, the term "and / or" is a description of the association relationship between the associated objects, which means that there can be three kinds of relationships. For example, a centrifugal vortex magnetic force pump and / or a centrifugal vortex magnetic force pump can represent three cases: only one centrifugal vortex magnetic force pump exists, both a centrifugal vortex magnetic force pump and a centrifugal vortex magnetic force pump exist, and only a centrifugal vortex magnetic force pump exists. In addition, the character " / " in the present application generally represents a "and / or" relationship between the associated objects.

[0049] In the present application, the terms "connection", "combination", "coupling", "mounting" can be direct connection, combination, coupling or mounting, or indirect connection, combination, coupling or mounting. Among them, for example, direct connection means that two parts or components are connected together without setting intermediate parts, indirect connection means that two parts or components are connected with at least one intermediate part, and the two parts or components are connected through the intermediate part. In addition, "connection" and "coupling" are not limited to physical or mechanical connection or coupling, and can include electrical connection or coupling.

[0050] In this application, those of ordinary skill in the art will understand that relative terms, such as "about", "approximately", "substantially" and the like, used in connection with a quantity or a condition (e.g., "about 1", "approximately 1", "substantially 1", etc.) are intended to include the stated value and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with a particular measurement of the particular value and tolerances that are expected to result from manufacturing, assembling, using, etc. Such terms are also to be construed to disclose a range defined by the absolute values of the two endpoints. The relative terms can refer to a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value plus or minus. Values that do not employ relative terms are also to be disclosed as particular values with tolerances. In addition, "substantially" when used in the context of expressing a relative angular positional relationship (e.g., substantially parallel, substantially perpendicular), can refer to plus or minus a certain number of degrees (e.g., 1 degree, 5 degrees, 10 degrees or more) from the indicated angle.

[0051] In this application, those of ordinary skill in the art will understand that a function performed by a component can be performed by one component, multiple components, one part, or multiple parts. Similarly, a function performed by a part can be performed by one part, one component, or a combination of multiple parts.

[0052] In this application, the orientation terms such as "upper", "lower", "left", "right", "front", "back", etc. are described in the orientation and positional relationship shown in the drawings, and should not be understood as a limitation on the embodiments of the present application. In addition, it is also understood in the context that when referring to one element connected to another element "on" or "under", it can not only be directly connected to another element "on" or "under", but also indirectly connected to another element "on" or "under" through an intermediate element. It should also be understood that the orientation terms such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive direction, but also can be understood as the side direction. For example, the lower side can include the positive lower side, the left lower side, the right lower side, the front lower side, and the back lower side, etc.

[0053] Please refer to Figures 1 to 6 The embodiment provides a lens adjusting mechanism, which comprises a lens support 1, a lens assembly 2, an elastic support assembly 3, and an adjusting assembly 4. The lens assembly 2 is movably arranged on the lens support 1. The elastic support assembly 3 is arranged on the lens support 1, and is configured to elastically support one side of the lens assembly 2. The adjusting assembly 4 is arranged on the lens support 1, and the elastic support assembly 3 and the adjusting assembly 4 are respectively located on opposite sides of the lens assembly 2. The adjusting assembly 4 is configured to apply a pushing force to the other side of the lens assembly 2 and compress the elastic support assembly 3.

[0054] When adjusting, the adjusting assembly 4 increases the pushing force applied to the lens assembly 2 to push the lens assembly 2 to move to one side of the elastic support assembly 3, and at the same time, the elastic support assembly 3 increases the elastic potential energy, and vice versa, the adjusting assembly 4 reduces the pushing force applied to the lens assembly 2, and the elastic support assembly 3 releases the elastic potential energy to push the lens assembly 2 to move to one side of the adjusting assembly 4.

[0055] It can be understood that the lens is pushed by the cooperation of the adjusting assembly 4 and the elastic support assembly 3, without the need to set a long pull rod and screw assembly behind the lens, which does not occupy the valuable space inside the device, and is beneficial to the miniaturization design of the device. It can be understood that the pushing force applied to the lens assembly 2 by the elastic support assembly 3 will always change with the change of the pushing force of the adjusting assembly 4, so that only the working state of the adjusting assembly 4 needs to be controlled to adjust the lens assembly 2 in two opposite directions, thereby realizing the control of the micro position and having high adjustment precision. In addition, compared with the existing adjusting mode using a pull type structure, the wear between mechanical assemblies is less when the lens is pushed by the cooperation of the adjusting assembly 4 and the elastic support assembly 3, so that the adjustment precision is not easily reduced, and the movement is not easily unstable, which can ensure the optical performance.

[0056] In order to improve the flexibility of adjusting the position of the lens assembly 2, two elastic support assemblies 3 are provided, and the two elastic support assemblies 3 are symmetrical about the center line of the lens assembly 2. The number of adjusting assemblies 4 corresponds to the number of elastic support assemblies 3, and one-to-one correspondence. The pushing force directions of the two adjusting assemblies 4 intersect. It can be understood that by pushing the lens assembly 2 in two intersecting directions by the two adjusting assemblies 4, the position of the lens assembly 2 can be more flexibly adjusted.

[0057] Specifically, the adjusting assembly 4 includes a pushing piece 41 hinged to the lens holder 1, and the pushing piece 41 includes a matching part 411 in sliding cooperation with the lens holder 1, and the adjusting assembly 4 pushes the lens assembly 2 through the pushing piece 41. It can be understood that the lens assembly 2 is pushed by the pushing piece 41 hinged to the lens holder 1, which is more reliable in structure and is not easy to be dislocated due to vibration, collision and the like of the device.

[0058] In order to further improve the adjustment precision of the lens assembly 2, the adjusting assembly 4 further includes a servo motor 42, a lead screw 43, a guide sleeve 44 and a nut 45. The servo motor 42 includes an output shaft capable of forward and reverse rotation. The lead screw 43 is coaxially connected to the output shaft. The guide sleeve 44 is coaxially sleeved on the lead screw 43 and forms a guide channel between the lead screw 43. The nut 45 is threadedly connected to the lead screw 43 and is in sliding cooperation with the guide channel, so that it can move axially along the lead screw 43, and the nut 45 abuts against one side of the matching part 411 away from the lens holder 1.

[0059] It can be understood that the servo motor 42 drives the pushing piece 41 to rotate through the transmission structure composed of the lead screw 43 and the nut 45 to push the lens assembly 2. The transmission structure composed of the lead screw 43 and the nut 45 can realize high-precision linear motion control, and can further improve the adjustment accuracy. In addition, the servo motor 42 has the advantages of high transmission efficiency and precise control, which can further improve the adjustment accuracy. It should be noted that the specific model of the servo motor 42 is selected according to the actual application scene, and the present embodiment does not make specific requirements and limitations. It should be further noted that in order to improve the convenience of controlling the servo motor 42, the servo motor 42 can be controlled in a remote control manner, or the control end of the servo motor 42 is arranged on the outside of the equipment.

[0060] When the pushing piece 41 pushes the lens assembly 2 to move, the matching part 411 and the nut 45 will continuously rub against each other, which will cause wear between the two after a long time of use, and thus affect the adjustment accuracy. Therefore, in order to reduce the friction between the matching part 411 and the nut 45, the adjusting assembly 4 further comprises a first universal ball 46 arranged on the nut 45, and the nut 45 abuts against the matching part 411 through the first universal ball 46. In this way, the sliding friction between the matching part 411 and the nut 45 can be replaced by rolling friction, so as to reduce the wear between the matching part 411 and the nut 45. It should be noted that the specific structure and working principle of the first universal ball 46 are both prior art, and thus will not be described herein. In addition, the model of the first universal ball 46 can be selected according to the actual application scene, and the present embodiment does not make specific requirements and limitations.

[0061] Similarly, when the pushing piece 41 pushes the lens assembly 2 to move, the nut 45 and the guide channel will continuously rub against each other, which will cause wear between the two after a long time of use, and thus affect the adjustment accuracy. Therefore, the adjusting assembly 4 further comprises a plurality of rolling balls 441 distributed on the inner wall of the guide sleeve 44, the plurality of rolling balls 441 are arranged along the axial direction of the guide sleeve 44, and the plurality of rolling balls 441 are wrapped around the outer periphery of the nut 45. In this way, the sliding friction between the nut 45 and the guide channel can be replaced by rolling friction, so as to reduce the wear between the nut 45 and the guide channel. It should be noted that the model and number of the rolling balls 441 can be selected according to the actual application scene, and the present embodiment does not make specific requirements and limitations.

[0062] In the present embodiment, the elastic supporting assembly 3 comprises an elastic telescopic piece 31 and a sleeve 32. One end of the elastic telescopic piece 31 is connected to the lens holder 1. The sleeve 32 is sleeved on the other end of the elastic telescopic piece 31, and the sleeve 32 abuts against the lens assembly 2. In this way, the sleeve 32 abuts against the lens assembly 2, which is more firm in abutment, and can better apply a pushing force to the lens assembly 2. It should be noted that the elastic telescopic piece 31 is preferably a telescopic spring, which will not be described herein.

[0063] When the sleeve 32 pushes the lens assembly 2 to move, the sleeve 32 and the lens assembly 2 will continuously rub against each other, which will cause wear of the sleeve 32 and the lens assembly 2 after long-term use, and then affect the adjustment accuracy. Therefore, the elastic support assembly 3 further comprises a second universal ball 33 arranged on the sleeve 32, and the sleeve 32 abuts against the lens assembly 2 through the second universal ball 33. In this way, the sliding friction between the sleeve 32 and the lens assembly 2 can be replaced by rolling friction, so as to reduce the wear between the sleeve 32 and the lens assembly 2. It should be noted that the specific structure and working principle of the second universal ball 33 are prior art, and therefore will not be described here. In addition, the model of the second universal ball 33 can be selected according to the actual application scene, and the present embodiment does not make specific requirements and limitations on this.

[0064] Further, the lens assembly 2 is provided with a guide groove 21 at the outer periphery, and the second universal ball 33 is located in the guide groove 21 and can roll along the guide groove 21. It can be understood that the second universal ball 33 is guided to roll through the guide groove 21, so that the elastic support assembly 3 can more stably push the lens assembly 2, which helps to improve the working reliability of the lens adjusting mechanism.

[0065] The present embodiment further provides a laser nozzle, which comprises a nozzle body and the lens adjusting mechanism, and the lens holder 1 of the lens adjusting mechanism is arranged inside the nozzle body. It can be understood that the laser nozzle comprising the lens adjusting mechanism is more convenient to adjust the lens and has a smaller size.

[0066] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the scope of the present application. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. An ophthalmic lens adjustment mechanism, characterized by, The lens support (1) comprises: a lens assembly (2) movably arranged on the lens support (1); a resilient support assembly (3) arranged on the lens support (1), the resilient support assembly (3) being configured to resiliently support one side of the lens assembly (2); an adjusting assembly (4) arranged on the lens support (1), the resilient support assembly (3) and the adjusting assembly (4) being respectively arranged on opposite sides of the lens assembly (2), the adjusting assembly (4) being configured to support the other side of the lens assembly (2) and to apply a pushing force to the other side of the lens assembly (2) and compress the resilient support assembly (3). The resilient support assembly (3) is provided in two, and the two resilient support assemblies (3) are symmetric about the center line of the lens assembly (2); 2. A lens adjustment mechanism according to claim 1, wherein, The number of the adjusting assembly (4) corresponds to the number of the resilient support assembly (3), and one-to-one correspondence; The pushing force directions of the two adjusting assemblies (4) intersect. The adjusting assembly (4) comprises a pushing member (41) hinged to the lens support (1), the pushing member (41) comprising a matching part (411) slidingly matched with the lens support (1), and the adjusting assembly (4) pushes the lens assembly (2) through the pushing member (41).

3. A lens adjustment mechanism according to claim 1, wherein, The adjusting assembly (4) further comprises:

4. A lens adjustment mechanism according to claim 3, wherein, a servo motor (42) comprising an output shaft capable of being reversed; a lead screw (43) coaxially connected to the output shaft; a guide sleeve (44) coaxially sleeved on the lead screw (43) and forming a guide channel with the lead screw (43); a nut (45) threadedly connected to the lead screw (43) and slidingly matched with the guide channel so as to be axially movable along the lead screw (43), and the nut (45) is in abutment with the side of the matching part (411) away from the lens support (1). The adjusting assembly (4) further comprises a first universal ball (46) arranged on the nut (45), and the nut (45) abuts against the matching part (411) through the first universal ball (46).

5. A lens adjustment mechanism according to claim 4, wherein, The adjusting assembly (4) further comprises a plurality of rolling balls (441) distributed on the inner wall of the guide sleeve (44), the plurality of rolling balls (441) are arranged in the axial direction of the guide sleeve (44), and the plurality of rolling balls (441) are wrapped around the outer periphery of the nut (45).

6. A lens adjustment mechanism according to claim 4, wherein, The resilient support assembly (3) comprises:

7. A lens adjustment mechanism according to claim 1, wherein a resilient telescopic member (31) having one end connected to the lens support (1); a sleeve (32) sleeved on the other end of the resilient telescopic member (31), the sleeve (32) being in abutment with the lens assembly (2). The resilient support assembly (3) further comprises a second universal ball (33) arranged on the sleeve (32), and the sleeve (32) abuts against the lens assembly (2) through the second universal ball (33).

8. A lens adjustment mechanism according to claim 7, wherein, The lens assembly (2) is provided with a guide groove (21) on the outer periphery, and the second universal ball (33) is located in the guide groove (21) and can roll along the guide groove (21).

9. A lens adjustment mechanism according to claim 8, wherein, ​ 10. A laser nozzle characterized by, A lens adjusting mechanism as claimed in any one of claims 1-9, wherein the lens holder (1) of the lens adjusting mechanism is arranged inside a nozzle body.

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