Lens adjustment mechanism and laser nozzle

Abstract

The present invention belongs to the technical field of optical equipment, and discloses a lens adjustment mechanism and a laser nozzle. The lens adjustment mechanism includes a lens bracket, a lens assembly, an elastic support assembly and an adjustment assembly. By cooperating with the adjustment assembly and the elastic support assembly to push the lens to move, there is no need to set a long pull rod and screw assembly behind the lens, which will not occupy the valuable space inside the equipment and is conducive to the miniaturization design of the equipment. In addition, the thrust applied by the elastic support assembly to the lens assembly will always change with the change of the thrust size of the adjustment assembly, so that the lens assembly can be adjusted in two opposite directions by only controlling the working state of the adjustment assembly, thereby achieving control of small positions and high adjustment accuracy. In addition, compared with the existing method of adjusting by using a pull-type structure, there is less wear between mechanical components, which is not easy to cause a decrease in adjustment accuracy, and it is not easy to cause unstable movement, so that the optical performance can be guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of optical equipment, and in particular to a lens adjustment mechanism and a laser nozzle. Background Art

[0002] Currently in optical equipment (such as laser cutting heads, laser welding heads, etc.), the position and angle adjustment of the lens is crucial to the optical performance of the equipment.

[0003] Conventional lens adjustment mechanisms usually use a pull-type structure to adjust the lens position. Specifically, the lens is pulled to a predetermined position by components such as a screw and a pull rod. For example, Chinese patent CN118682275A. However, this pull-type structure has the following problems:

[0004] 1. Complex structure and large space occupation: The pull-type structure requires a long pull rod and screw assembly to be set behind the lens, which occupies valuable space inside the equipment and is not conducive to the miniaturization design of the equipment.

[0005] 2. Limited adjustment accuracy: Due to the limitation of mechanical structure, the pull-type structure has difficulty in controlling small displacements, and it is difficult to achieve high-precision lens position adjustment.

[0006] 3. Mechanical wear and unstable movement: During the pulling process, the wear between mechanical components will lead to a decrease in adjustment accuracy and may cause unstable movement, affecting optical performance.

[0007] Therefore, the above problems need to be solved urgently. Summary of the invention

[0008] The object of the present invention is to provide a lens adjustment mechanism and a laser nozzle, which saves time and effort and has high adjustment accuracy. In addition, it is conducive to the miniaturization design of the equipment.

[0009] To achieve this object, the present invention adopts the following technical solutions:

[0010] A lens adjustment mechanism, comprising:

[0011] Lens holder;

[0012] A lens assembly, movably disposed on the lens bracket;

[0013] An elastic support component, disposed on the lens bracket, and configured to elastically support one side of the lens component;

[0014] The adjusting assembly is arranged on the lens bracket, the elastic supporting assembly and the adjusting assembly are respectively located on two opposite sides of the lens assembly, the adjusting assembly is configured to support the other side of the lens assembly, and is configured to apply thrust to the other side of the lens assembly and compress the elastic supporting assembly.

[0015] Preferably, two elastic support components are provided, and the two elastic support components are symmetrical about the center line of the lens assembly;

[0016] The number of the adjustment components corresponds to the number of the elastic support components, and they correspond one to one;

[0017] The thrust application directions of the two adjusting components intersect.

[0018] Preferably, the adjustment assembly includes a push member hinged on the lens holder, the push member includes a mating portion that slidably engages with the lens holder, and the adjustment assembly pushes the lens assembly via the push member.

[0019] Preferably, the adjustment component further comprises:

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

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

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

[0023] The nut is threadedly connected to the screw rod and slidingly matched with the guide channel so that it can move along the axial direction of the screw rod, and the nut abuts against a side of the matching portion away from the lens bracket.

[0024] Preferably, the adjustment assembly further comprises a first universal ball disposed on the nut, and the nut abuts against the fitting portion via the first universal ball.

[0025] Preferably, the adjustment assembly further comprises a plurality of balls distributed on the inner wall of the guide sleeve, the plurality of balls are arranged along the axial direction of the guide sleeve, and the plurality of balls are coated on the outer circumference of the nut.

[0026] Preferably, the elastic support assembly comprises:

[0027] An elastic telescopic member, one end of which is connected to the lens bracket;

[0028] A sleeve is sleeved on the other end of the elastic telescopic member, and the sleeve is in contact with the lens assembly.

[0029] Preferably, the elastic support assembly further comprises a second universal ball disposed on the sleeve, and the sleeve abuts against the lens assembly via the second universal ball.

[0030] Preferably, a guide groove is provided on the periphery of the lens assembly, and the second universal ball is located in the guide groove and can roll along the guide groove.

[0031] A laser nozzle comprises a nozzle body and the above-mentioned lens adjustment mechanism, wherein the lens bracket of the lens adjustment mechanism is arranged inside the nozzle body.

[0032] Beneficial effects of the present invention:

[0033] 1. By promoting the movement of the lens through the cooperation of the adjustment component and the elastic support component, there is no need to set a long pull rod and screw component behind the lens, which will not occupy the valuable space inside the equipment and is conducive to the miniaturization design of the equipment. In addition, the thrust applied by the elastic support component to the lens component will always change with the change of the thrust of the adjustment component. Therefore, it is only necessary to control the working state of the adjustment component to adjust the lens component in two opposite directions, thereby achieving control of tiny positions with high adjustment accuracy. In addition, compared with the existing pull-type structure adjustment method, there is less wear between mechanical components, which is not easy to cause a decrease in adjustment accuracy, and it is not easy to cause unstable movement, which can ensure optical performance.

[0034] 2. The laser nozzle including the above-mentioned lens adjustment mechanism is more convenient for adjusting the lens and has a smaller size. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 is a structural schematic diagram of the lens adjustment mechanism provided by the present invention;

[0036] Figure 2 It is a structural schematic diagram of the lens adjustment mechanism provided by the present invention without the lens bracket;

[0037] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

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

[0039] Figure 5 is a schematic structural diagram of the elastic support assembly provided by the present invention;

[0040] Figure 6 It is a structural schematic diagram of the lens assembly provided by the present invention.

[0041] In the figure:

[0042] 1. Lens bracket;

[0043] 2. lens assembly; 21. guide groove;

[0044] 3. Elastic support assembly; 31. Elastic telescopic member; 32. Sleeve; 33. Second universal ball;

[0045] 4. Adjustment assembly; 41. Push member; 411. Matching part; 42. Servo motor; 43. Screw rod; 44. Guide sleeve; 441. Ball; 45. Nut; 46. 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 drawings.

[0047] In this application, the terms "comprises", "includes", "has" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device that includes the element.

[0048] In the present application, the term "and / or" is a description of the association relationship of associated objects, indicating that three relationships may exist. For example, a centrifugal vortex magnetic pump and / or a centrifugal vortex magnetic pump can represent: the existence of a centrifugal vortex magnetic pump alone, the existence of a centrifugal vortex magnetic pump and a centrifugal vortex magnetic pump at the same time, and the existence of a centrifugal vortex magnetic pump alone. In addition, the character " / " in the present application generally indicates that the objects associated before and after are in an "and / or" relationship.

[0049] In the present application, the terms "connect", "combine", "couple", and "install" may refer to direct connection, combination, coupling, or installation, or indirect connection, combination, coupling, or installation. For example, direct connection refers to two parts or components being connected together without the need for an intermediate piece, and indirect connection refers to two parts or components being connected to at least one intermediate piece respectively, and the two parts or components being connected via the intermediate piece. In addition, "connect" and "couple" are not limited to physical or mechanical connections or couplings, and may include electrical connections or couplings.

[0050] In the present application, it will be understood by those of ordinary skill in the art that relative terms (e.g., "about," "approximately," "substantially," etc.) used in conjunction with quantities or conditions include the values ​​and have the meaning indicated by the context. For example, the relative terms include at least the degree of error associated with the measurement of a specific value, the tolerances caused by manufacturing, assembly, and use associated with a specific value, and the like. Such terms should also be considered to disclose a range defined by the absolute values ​​of the two endpoints. Relative terms may refer to plus or minus a certain percentage (e.g., 1%, 5%, 10% or more) of the indicated value. Numerical values ​​that do not use relative terms should also be disclosed as specific values ​​with tolerances. In addition, "substantially" may refer to plus or minus a certain degree (e.g., 1 degree, 5 degrees, 10 degrees or more) on the basis of the indicated angle when expressing a relative angular position relationship (e.g., substantially parallel, substantially perpendicular).

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

[0052] In the present application, the terms "upper", "lower", "left", "right", "front", "back" and other directional words are described based on the orientation and positional relationship shown in the accompanying drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it is also necessary to understand that when it is mentioned that an element is connected to another element "upper" or "lower", it can not only be directly connected to another element "upper" or "lower", but also indirectly connected to another element "upper" or "lower" through an intermediate element. It should also be understood that directional words such as upper side, lower side, left side, right side, front side, back side, etc. not only represent the positive orientation, but can also be understood as the lateral orientation. For example, the bottom can include directly below, lower left, lower right, lower front, and lower back, etc.

[0053] See also Figures 1 to 6 The present embodiment provides a lens adjustment mechanism, which includes a lens support 1, a lens assembly 2, an elastic support assembly 3 and an adjustment 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 the elastic support assembly 3 is configured to elastically support one side of the lens assembly 2. The adjustment assembly 4 is arranged on the lens support 1, and the elastic support assembly 3 and the adjustment assembly 4 are respectively located on two opposite sides of the lens assembly 2, and the adjustment assembly 4 is configured to apply a thrust to the other side of the lens assembly 2 and compress the elastic support assembly 3.

[0054] During adjustment, the adjusting component 4 increases the thrust applied to the lens component 2 to push the lens component 2 toward the side of the elastic support component 3. At the same time, the elastic support component 3 increases its elastic potential energy. Conversely, the adjusting component 4 reduces the thrust applied to the lens component 2, and the elastic support component 3 releases its elastic potential energy to push the lens component 2 toward the side of the adjusting component 4.

[0055] It is understandable that by promoting the movement of the lens through the cooperation of the adjustment component 4 and the elastic support component 3, there is no need to set a long pull rod and screw component behind the lens, which will not occupy the valuable space inside the device and is conducive to the miniaturization design of the device. It is understandable that the thrust applied by the elastic support component 3 to the lens component 2 will always change with the change of the thrust of the adjustment component 4, so that the lens component 2 can be adjusted in two opposite directions by simply controlling the working state of the adjustment component 4, thereby achieving the control of small positions and high adjustment accuracy. In addition, by promoting the movement of the lens through the cooperation of the adjustment component 4 and the elastic support component 3, compared with the existing pull-type structure adjustment method, the wear between the mechanical components is less, which is not easy to cause a decrease in adjustment accuracy, and it is not easy to cause unstable movement, which can ensure 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 adjustment assemblies 4 corresponds to the number of elastic support assemblies 3, and they correspond one to one. The thrust application directions of the two adjustment assemblies 4 intersect. It can be understood that by pushing the lens assembly 2 in two intersecting directions respectively by the two adjustment assemblies 4, the position of the lens assembly 2 can be adjusted more flexibly.

[0057] Specifically, the adjustment component 4 includes a push-pull member 41 hinged on the lens holder 1, and the push-pull member 41 includes a matching portion 411 that slidably matches with the lens holder 1. The adjustment component 4 pushes the lens assembly 2 through the push-pull member 41. It can be understood that by pushing the lens assembly 2 through the push-pull member 41 hinged on the lens holder 1, the structure is more reliable and is not easy to be misaligned due to equipment vibration, collision, etc.

[0058] In order to further improve the adjustment accuracy of the lens assembly 2, the adjustment assembly 4 also includes a servo motor 42, a screw 43, a guide sleeve 44 and a nut 45. The servo motor 42 includes an output shaft that can rotate forward and reverse. The screw 43 is coaxially connected to the output shaft. The guide sleeve 44 is coaxially sleeved on the screw 43 and forms a guide channel with the screw 43. The nut 45 is threadedly connected to the screw 43 and slides with the guide channel so that it can move axially along the screw 43, and the nut 45 abuts against the side of the matching portion 411 away from the lens bracket 1.

[0059] It is understandable that the servo motor 42 drives the push member 41 to rotate through the transmission structure composed of the screw rod 43 and the nut 45 to push the lens assembly 2. Since the transmission structure composed of the screw rod 43 and the nut 45 can achieve high-precision linear motion control, the adjustment accuracy can be further improved. 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 scenario, and this embodiment does not make specific requirements and restrictions on this. It should also be noted that in order to improve the convenience of controlling the servo motor 42, the servo motor 42 can be remotely controlled, or the control end of the servo motor 42 can be set on the outside of the device.

[0060] When the push member 41 pushes the lens assembly 2 to move, there will be continuous friction between the matching portion 411 and the nut 45, which will cause wear on both after long-term use, thereby affecting the adjustment accuracy. Therefore, in order to reduce the friction between the matching portion 411 and the nut 45, the adjustment assembly 4 in this embodiment also includes a first universal ball 46 arranged on the nut 45, and the nut 45 abuts the matching portion 411 through the first universal ball 46. With such a configuration, the sliding friction between the matching portion 411 and the nut 45 can be replaced by rolling friction, thereby reducing the wear between the matching portion 411 and the nut 45. It should be noted that the specific structure and working principle of the first universal ball 46 are all prior art, so they are not described in detail. In addition, the model of the first universal ball 46 can be selected according to the actual application scenario, and this embodiment does not make specific requirements and restrictions on this.

[0061] Similarly, when the push member 41 pushes the lens assembly 2 to move, there will be continuous friction between the nut 45 and the guide channel, which will cause wear on both after long-term use, thereby affecting the adjustment accuracy. To this end, the adjustment assembly 4 also includes a number of balls 441 distributed on the inner wall of the guide sleeve 44, a number of balls 441 are arranged along the axial direction of the guide sleeve 44, and a number of balls 441 are coated on 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, thereby reducing the wear between the nut 45 and the guide channel. It should be noted that the model and number of balls 441 can be selected according to the actual application scenario, and this embodiment does not make specific requirements and restrictions on this.

[0062] In this embodiment, the elastic support assembly 3 includes an elastic telescopic member 31 and a sleeve 32. One end of the elastic telescopic member 31 is connected to the lens support 1. The sleeve 32 is sleeved on the other end of the elastic telescopic member 31, and the sleeve 32 abuts against the lens assembly 2. In this way, the abutment between the sleeve 32 and the lens assembly 2 is more secure, and a thrust can be better applied to the lens assembly 2. It should be noted that the elastic telescopic member 31 is preferably a telescopic spring, which will not be described in detail.

[0063] When the sleeve 32 pushes the lens assembly 2 to move, there will be continuous friction between the sleeve 32 and the lens assembly 2, which will cause wear on both after long-term use, thereby affecting the adjustment accuracy. To this end, the elastic support assembly 3 also includes 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. With such a configuration, the sliding friction between the sleeve 32 and the lens assembly 2 can be replaced by rolling friction, thereby reducing 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 all prior art, so they are not described in detail. In addition, the model of the second universal ball 33 can be selected according to the actual application scenario, and this embodiment does not make specific requirements and restrictions on this.

[0064] Furthermore, a guide groove 21 is provided on the periphery of the lens assembly 2, 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 by guiding the second universal ball 33 to roll through the guide groove 21, the elastic support assembly 3 can push the lens assembly 2 more stably, which helps to improve the working reliability of the lens adjustment mechanism.

[0065] This embodiment also provides a laser nozzle, which includes a nozzle body and the above-mentioned lens adjustment mechanism, and the lens bracket 1 of the lens adjustment mechanism is arranged inside the nozzle body. It can be understood that the laser nozzle including the above-mentioned lens adjustment mechanism is more convenient for adjusting the lens and has a smaller volume.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lens adjustment mechanism, characterized in that: include: Lens holder (1); A lens assembly (2) movably disposed on the lens support (1); An elastic support component (3) is arranged on the lens bracket (1), and the elastic support component (3) is configured to elastically support one side of the lens component (2); An adjusting component (4) is arranged on the lens bracket (1); the elastic supporting component (3) and the adjusting component (4) are respectively located on two opposite sides of the lens component (2); the adjusting component (4) is configured to support the other side of the lens component (2), and is configured to apply a thrust to the other side of the lens component (2) and compress the elastic supporting component (3).

2. A lens adjustment mechanism according to claim 1, characterized in that: Two elastic support components (3) are provided, and the two elastic support components (3) are symmetrical about the center line of the lens component (2); The number of the adjustment components (4) corresponds to the number of the elastic support components (3), and they correspond one to one; The thrust application directions of the two adjustment components (4) intersect.

3. A lens adjustment mechanism according to claim 1, characterized in that: The adjusting component (4) comprises a push-pull member (41) hinged on the lens holder (1), the push-pull member (41) comprises a matching portion (411) that is slidably matched with the lens holder (1), and the adjusting component (4) pushes the lens component (2) via the push-pull member (41).

4. A lens adjustment mechanism according to claim 3, characterized in that: The adjustment component (4) also includes: A servo motor (42) including an output shaft capable of forward and reverse rotation; A screw rod (43) coaxially connected to the output shaft; A guide sleeve (44) is coaxially sleeved on the screw rod (43) and forms a guide channel with the screw rod (43); The nut (45) is threadedly connected to the screw rod (43) and slidingly cooperates with the guide channel so that it can move axially along the screw rod (43), and the nut (45) abuts against a side of the matching portion (411) away from the lens holder (1).

5. A lens adjustment mechanism according to claim 4, characterized in that: The adjustment assembly (4) further comprises a first universal ball (46) arranged on the nut (45), and the nut (45) abuts against the matching portion (411) via the first universal ball (46).

6. A lens adjustment mechanism according to claim 4, characterized in that: The adjustment assembly (4) further comprises a plurality of balls (441) distributed on the inner wall of the guide sleeve (44), the plurality of balls (441) being arranged along the axial direction of the guide sleeve (44), and the plurality of balls (441) being covered on the outer periphery of the nut (45).

7. The lens adjustment mechanism according to claim 1, characterized in that: The elastic support assembly (3) comprises: An elastic telescopic member (31), one end of which is connected to the lens support (1); A sleeve (32) is sleeved on the other end of the elastic telescopic member (31), and the sleeve (32) is in contact with the lens assembly (2).

8. A lens adjustment mechanism according to claim 7, characterized in that: 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) via the second universal ball (33).

9. A lens adjustment mechanism according to claim 8, characterized in that: A guide groove (21) is provided on the outer periphery of the lens assembly (2); the second universal ball (33) is located in the guide groove (21) and is capable of rolling along the guide groove (21).

10. A laser nozzle, characterized in that: It comprises a nozzle body and a lens adjustment mechanism as described in any one of claims 1 to 9, wherein the lens bracket (1) of the lens adjustment mechanism is arranged inside the nozzle body.

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