Laser mirror fixing device and fixing method

Abstract

The application discloses a laser lens fixing device and a fixing method. The laser lens fixing device comprises a frame assembly, a lens mounting hole is formed in the frame assembly, the lens mounting hole is used for mounting a lens, and the inner diameter of the lens mounting hole matches the outer diameter of the lens. A lens mounting portion is formed in the lens mounting hole in the radial direction, the lens mounting portion is used for abutting against the end face of the lens edge, and adhesive is coated on the lens mounting portion. The clamping tool comprises two clamping arms, and a lens clamping cavity is formed between the two clamping arms. The lens clamping cavity is used for clamping the lens. The clamping tool and the frame assembly are detachably fixed and connected through a connecting assembly. The application solves the problem that the laser lens is prone to angular displacement during installation in the related art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser manufacturing, in particular to a laser lens fixing device and fixing method. BACKGROUND

[0002] In the production process of the laser, optical lenses are usually used to change the direction of the light beam or make the light beam reflect back and forth between the lenses to enhance the laser intensity. The lenses need to be accurately controlled in the laser to achieve the purpose of light beam enhancement or light beam deflection.

[0003] There are mainly two ways to fix the lenses in the laser in the current industrial production. One is to use a mechanical fixing method, which mainly fixes the lenses on the lens seat through threaded clamping and the like. This method is simple to install, but is easy to lose accuracy due to temperature changes, vibration and the like. A better way is to fix the lenses on the lens holder using an adhesive to provide better shock resistance and temperature stability. However, this method has higher requirements for the selection and use of the adhesive. After the adhesive solidifies, the lenses will have a certain angular displacement. At this time, the lenses cannot be fine-tuned, so during the gluing process, the flatness of the bonding surface of the lens holder and the uniformity of the adhesive during the bonding process are generally relied on to ensure the angular position accuracy of the lenses. SUMMARY

[0004] The main purpose of the present application is to provide a laser lens fixing device to solve the problem of angular displacement of the laser lens during installation in the related art.

[0005] To achieve the above purpose, the present application provides a laser lens fixing device, which comprises:

[0006] A lens holder assembly is provided with a lens mounting hole, the lens mounting hole is used to mount the lens, and the inner diameter of the lens mounting hole matches the outer diameter of the lens;

[0007] A lens mounting portion is formed radially in the lens mounting hole, the lens mounting portion is used to abut against the end face of the edge of the lens, and the lens mounting portion is coated with adhesive;

[0008] A clamping tool comprises two clamping arms, and a lens clamping cavity is formed between the two clamping arms, the lens clamping cavity is used to clamp the lens;

[0009] The clamping tool and the lens holder assembly are detachably fixed and connected through a connecting assembly.

[0010] Further, the connecting assembly comprises a first adjusting bolt, a second adjusting bolt and a third adjusting bolt.

[0011] The upper ends of the two clamping arms are provided with extension arms facing the mirror frame assembly, the extension arms are arranged to abut against the upper end surface of the mirror frame assembly, and the first adjusting screw is screwed with the mirror frame assembly through the extension arms;

[0012] The second adjusting screw and the third adjusting screw are arranged at the lower part of the clamping tool and on both sides of the lens clamping cavity, and are screwed with the mirror frame assembly through the clamping tool.

[0013] Further, a connecting space is arranged between the extension arms of the two clamping arms, the first adjusting screw is screwed with the upper end of the mirror frame assembly through the connecting space, the first adjusting screw can be pressed against the extension arms, and the pitch angle of the clamping arms is adjusted by adjusting the pressing force of the first adjusting screw.

[0014] Further, the second adjusting screw and the third adjusting screw are symmetrically distributed along the vertical center line of the lens clamping cavity;

[0015] The second adjusting screw and the third adjusting screw are pressed against the front side of the clamping tool, and the pitch angle of the clamping arms and the deflection angle of the clamping arms along the vertical axis are adjusted by adjusting the pressing force of the second adjusting screw and the third adjusting screw.

[0016] Further, the mirror frame assembly comprises a mirror frame base and a mirror frame, the mirror frame is detachably fixed on the mirror frame base, and the lens mounting hole is arranged on the mirror frame.

[0017] Further, the two sides of the mirror frame extend outward to form mounting portions, and the mounting portions and the mirror frame base are fixedly connected by connecting screws.

[0018] Further, the two clamping arms are connected by a clamping screw, and the clamping force of the two clamping arms can be adjusted by screwing the clamping screw.

[0019] Further, the clamping tool is made of aluminum.

[0020] Further, the adhesive is ultraviolet curing glue.

[0021] According to another aspect of the present application, a fixing method of a laser lens is provided, using the laser lens fixing device described above, and comprising the following steps:

[0022] Applying adhesive on the lens mounting portion;

[0023] Loading the lens into the lens clamping cavity and clamping;

[0024] The clamping tool is installed on the frame assembly through the first adjusting screw, a horizontal collimated incident light is used to adjust the pitch angle of the lens by adjusting the pitch angle of the clamping arm, so that the reflected light beam returns along the original light path;

[0025] The pitch angle and the yaw angle of the lens are adjusted by adjusting the second adjusting screw and the third adjusting screw, so that the reflected light beam coincides with the incident light beam;

[0026] The adhesive is cured, and the clamping tool is removed after the adhesive is cured.

[0027] In the embodiment of the present application, a frame assembly is provided, a lens mounting hole is formed in the frame assembly, the lens mounting hole is used to mount a lens, the inner diameter of the lens mounting hole matches the outer diameter of the lens, a lens mounting portion is formed in the lens mounting hole in the radial direction, the lens mounting portion is used to abut against the end face of the edge of the lens, and adhesive is coated on the lens mounting portion. A clamping tool includes two clamping arms, a lens clamping cavity is formed between the two clamping arms, and the lens clamping cavity is used to clamp the lens. The clamping tool and the frame assembly are detachably fixedly connected through a connecting assembly. The position of the lens is positioned by using the specific clamping tool. During the process of mounting the lens into the lens mounting hole and during the process of curing the adhesive, the angle of the lens does not change under the action of the clamping tool. Therefore, the accuracy of the angle position of the lens after installation is improved, high-strength, high-precision, and high-temperature fixing are achieved, the stable operation of the laser is ensured, and the problem that the angle of the lens is easily displaced during installation in the related art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, make the purpose, characteristics, and advantages of the present application more apparent, and are used to explain the present application, but do not constitute improper limitations to the present application. In the drawings:

[0029] Figure 1 is a structural schematic diagram according to the embodiment of the present application;

[0030] In the drawings, 1 is a clamping tool, 101 is a clamping arm, 102 is a lens clamping cavity, 2 is a lens, 3 is a connecting distance, 4 is a first adjusting screw, 5 is a lens mounting portion, 6 is a lens mounting hole, 7 is a frame assembly, 71 is a frame, 72 is a mounting portion, 8 is a second adjusting screw, and 9 is a third adjusting screw. DETAILED DESCRIPTION

[0031] In the following, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work should fall into the protection scope of the present application.

[0032] It should be noted that the terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented.

[0033] In the present application, the terms "upper", "lower", "inner", and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0034] In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For a person of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0035] In addition, the terms "set", "provided with", "connected", "fixed" and the like should be understood broadly. For example, "connected" can be fixedly connected, detachably connected, or integrally constructed; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For a person of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.

[0036] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0037] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0038] In the related art, an adhesive is used to fix the lens to the frame to provide better shock resistance and temperature stability, but this method has high requirements for the selection and use of the adhesive, and after the adhesive solidifies, the lens will generally have a certain angular displacement, at which time the lens cannot be fine-tuned, so during the gluing process, the flatness of the bonding surface of the processed frame and the uniformity of the adhesive during the bonding process are generally relied on to ensure the angular position accuracy of the lens.

[0039] To solve the above technical problems, as shown in Figure 1 The embodiment of the application provides a laser lens fixing device, which comprises:

[0040] A frame assembly 7 is provided with a lens mounting hole 6 for mounting the lens 2, and the inner diameter of the lens mounting hole 6 matches the outer diameter of the lens 2;

[0041] A lens mounting portion 5 is formed in the lens mounting hole 6 in the radial direction, and the lens mounting portion 5 is used to abut against the end face of the edge of the lens 2, and the lens mounting portion 5 is coated with adhesive;

[0042] The clamping tool 1 comprises two clamping arms 101, and the two clamping arms 101 are provided with a lens clamping cavity 102 therebetween, and the lens clamping cavity 102 is used to clamp the lens 2;

[0043] The clamping tool 1 and the frame assembly 7 are detachably fixedly connected through a connecting assembly.

[0044] In the field of laser manufacturing, if the laser is not perpendicular to the center of the lens 2 during the process of bonding the lens 2, the subsequent light path will be affected, and the output power of the laser will be reduced. To solve the problem that the angle of the lens 2 changes due to factors such as glue solidification and vibration during the process of bonding the lens 2, the application provides a lens clamping tool, which is combined with a special frame 71 and can accurately and effectively adjust the angle of the lens 2, and ensures that the light path is always perpendicular to the center of the lens 2 before the glue is completely solidified.

[0045] Specifically, in the embodiment, the frame assembly 7 is used as a part for mounting the lens 2 in the laser, and the clamping tool 1 is used as a structure for clamping and positioning the lens 2. The frame assembly 7 is provided with a lens mounting hole 6 for mounting the lens 2, and the inner diameter of the lens mounting hole 6 matches the outer diameter of the lens 2. A lens mounting portion 5 is formed in the lens mounting hole 6 in the radial direction, and the lens mounting portion 5 can be a mounting ring formed in the lens mounting hole 6, or a plurality of mounting strips formed in the lens mounting hole 6, and the plurality of mounting strips are arranged in the circumferential direction of the lens mounting hole 6.

[0046] In order to improve the mounting stability of the lens 2, it is necessary to improve the contact area between the lens 2 and the lens mounting portion 5 as much as possible. Therefore, the lens mounting portion 5 in the embodiment is preferably an installation ring formed in the lens mounting hole 6. When the lens 2 is mounted into the lens mounting portion 5 along the axial direction, the edge of the end surface of the lens 2 will abut against the end surface of the lens 2 installation ring. Therefore, in the embodiment, the end surface of the lens mounting portion 5 facing the lens 2 is coated with adhesive, and the lens 2 can be fixed to the lens mounting portion 5 by means of adhesion. The adhesive is ultraviolet curing adhesive, and curing is achieved by irradiating ultraviolet rays after the lens 2 is installed.

[0047] In order to prevent the angle of the lens 2 from changing during the process of mounting the lens 2 into the lens mounting hole 6 and during the process of curing the adhesive after the lens 2 is in contact with the adhesive, a specific clamping tool 1 is used to fix and position the lens 2 in the embodiment. As shown in Figure 1 The clamping tool 1 includes two oppositely arranged clamping arms 101, and the two clamping arms 101 can provide clamping force by elasticity or under the action of additional fasteners. The two clamping arms 101 form a lens clamping cavity 102 therebetween, and the diameter of the lens clamping cavity 102 is slightly larger than the diameter of the lens 2, so that the lens 2 can be better placed into the lens clamping cavity 102. In order to improve the stability of clamping, the lens clamping cavity 102 is a nearly closed circle, and the gap forms two upwardly extending clamping arms 101. During installation, the lens 2 can be first placed into the lens clamping cavity 102 and the front end of the lens 2 can protrude from the clamping tool 1. The lens 2 is clamped and positioned by the lens clamping cavity 102, and then the clamping tool 1 is mounted onto the frame assembly 7 and fixed by the connecting assembly. The protruding part of the lens 2 is inserted into the lens mounting hole 6, the front end surface of the lens 2 abuts against the end surface of the lens mounting portion 5 in the lens mounting hole 6, the adhesive coated on the end surface of the lens mounting portion 5 is cured after being in contact with the lens 2, thereby fixing the lens 2 in the lens mounting hole 6, and finally the clamping tool 1 is removed to complete the installation of the lens 2.

[0048] Compared with the prior art, the present application has the advantages that by improving the lens 2 adhesive process, the problem of angle change of the lens 2 caused by slight changes in the adhesive process of the lens 2 is solved, the adjustment accuracy of the laser lens 2 is improved, and at the same time, the method is simple in structure, efficient, low in cost, fast in production, more time-saving, and more convenient and convenient in the process of laser production and adjustment.

[0049] In order to facilitate the adjustment of the mounting angle of the lens 2 when the clamping tool 1 and the frame assembly 7 are connected, the connecting assembly in the embodiment includes a first adjusting bolt 4, a second adjusting bolt 8 and a third adjusting bolt 9.

[0050] The upper ends of the two clamping arms 101 are provided with extension arms 1011 facing the upper end surface of the frame assembly 7, and the first adjusting screw 4 is screwed into the extension arms 1011 and is in threaded connection with the upper end surface of the frame assembly 7.

[0051] The second adjusting screw 8 and the third adjusting screw 9 are arranged at the lower part of the clamping tool 1 and are located on both sides of the lens clamping cavity 102. The second adjusting screw 8 and the third adjusting screw 9 are screwed into the clamping tool 1 and are in threaded connection with the frame assembly 7.

[0052] In the embodiment, the upper ends of the two clamping arms 101 are provided with extension arms 1011 extending in the horizontal direction and facing the frame assembly 7, and the extension arms 1011 and the two clamping arms 101 together form a substantially inverted L-shaped structure. During installation, the clamping tool 1 is translated in the horizontal direction to the extension arms 1011 to be stacked on the upper end surface of the frame assembly 7, and the end surface of the clamping arm 101 is close to the end surface of the frame assembly 7. Then the first adjusting screw 4 is screwed into the extension arms 1011 and is in threaded connection with the upper end surface of the frame assembly 7. The clamping tool 1 can be made of a relatively soft material, such as aluminum. When the first adjusting screw 4 is screwed to apply more pressure to the extension arms 1011, the two clamping arms 101 will bend upward around the pressure point, thereby changing the pitch angle of the lens 2 installed between the two clamping arms 101, so that the installation angle of the lens 2 can make the reflected light beam return along the original light path.

[0053] On the basis of adjusting the pitch angle of the lens 2 by the first adjusting screw 4 in the connecting assembly, the embodiment further adjusts the left and right deflection angles of the lens 2 by arranging the second adjusting screw 8 and the third adjusting screw 9 on the clamping arm 101. The second adjusting screw 8 and the third adjusting screw 9 are located below the lens clamping cavity 102 and on both sides of the lens clamping cavity 102. Taking the example that the second adjusting screw 8 and the third adjusting screw 9 are located on the left and right sides respectively, the deflection angle of the lens 2 can be adjusted by adjusting the pressing force of the clamping arm 101 by the second adjusting screw 8 and the third adjusting screw 9. For example, the second adjusting screw 8 can be screwed to increase the pressure on the left side of the clamping arm 101, at this time the part of the clamping tool 1 located to the right of the second adjusting screw 8 will bend towards the left, so that the lens 2 installed in the clamping tool 1 will deflect towards the left. Similarly, the third adjusting screw 9 can be screwed to control the lens 2 to deflect towards the right. During adjustment, the deflection angle of the lens 2 around the vertical axis can be changed by the second adjusting screw 8 and the third adjusting screw 9, so that the returned light beam can completely coincide with the incident light beam.

[0054] To form the lens clamping cavity 102 and better clamp the lens 2, the connecting space 3 is arranged between the extension arms 1011 of the two clamping arms 101 in the embodiment, the first adjusting bolt 4 is screwed with the upper end of the frame assembly 7 after passing through the connecting space 3, and the first adjusting bolt 4 can be pressed on the extension arms, and the pitch angle of the clamping arms 101 is adjusted by adjusting the pressing force of the first adjusting bolt 4.

[0055] Specifically, it needs to be explained that the width of the connecting space 3 is substantially equal to the diameter of the first adjusting bolt 4 and less than the diameter of the head end of the first adjusting bolt 4, so that the first adjusting bolt 4 can pass through the connecting space 3 while the head end can be pressed on the upper end face of the two extension arms 1011, thereby the first adjusting bolt 4 can be pressed on the two extension arms 1011.

[0056] To facilitate the replacement of the adjustment of the deflection angle of the lens 2 around the vertical axis, the second adjusting bolt 8 and the third adjusting bolt 9 are symmetrically distributed along the vertical center line of the lens clamping cavity 102 in the embodiment; the second adjusting bolt 8 and the third adjusting bolt 9 are pressed on the front side of the clamping tool 1, and the pitch angle of the clamping arms 101 and the deflection angle of the clamping arms 101 along the vertical axis are adjusted by adjusting the pressing force of the second adjusting bolt 8 and the third adjusting bolt 9.

[0057] In the embodiment, the frame assembly 7 includes a frame 71 base and a frame 71, the frame 71 is detachably fixed on the frame 71 base, and the lens mounting hole 6 is arranged on the frame 71. The frame 71 is the part that needs to be installed in the laser, and the frame 71 base is the base structure for fixing the frame 71 during the installation of the lens 2. To facilitate the fixation of the frame 71, the mounting part 72 is formed on the two sides of the frame 71 and extends outward in the embodiment, and the mounting part 72 and the frame 71 base are fixedly connected by the connecting screw. The mounting part 72 can be a part of the frame 71, and the two are integrally formed.

[0058] To enable the lens 2 to be stably clamped between the two clamping arms 101, the two clamping arms 101 are connected by the clamping screw in the embodiment, and the clamping force of the two clamping arms 101 can be adjusted by screwing the clamping screw. Before the installation of the lens 2, the clamping screw is in a loosened state, and after the lens 2 is installed in the lens clamping cavity 102, the clamping screw is tightened to make the two clamping arms 101 close to each other, thereby clamping the lens 2. During the installation, the clamping screw can also be loosened to adjust the installation position of the lens 2 in the lens clamping cavity 102.

[0059] According to another aspect of the present application, a fixing method of a laser lens is provided, which uses the laser lens 2 fixing device described above and includes the following steps:

[0060] Coating adhesive on the lens mounting part 5;

[0061] The lens 2 is installed into the lens clamping cavity 102 and clamped;

[0062] The clamping tool 1 is installed on the frame assembly 7 by the first adjusting screw, a horizontal collimated incident light is used to adjust the pitch angle of the lens 2, the first adjusting screw is adjusted to adjust the pitch angle of the lens 2, and the reflected light beam is returned along the original light path;

[0063] The second adjusting screw and the third adjusting screw are adjusted to adjust the pitch angle and the deflection angle of the lens 2, so that the reflected light beam is completely coincided with the incident light beam;

[0064] The adhesive is cured, the clamping tool 1 is removed after the adhesive is cured, the clamping tool 1 is removed after the adhesive is completely cured, and the lens frame 71 which is completely perpendicular to the light path is simply manufactured.

[0065] The lens clamping tool and the lens frame 71 matched with the lens clamping tool are innovatively manufactured, the lens 2 can be finely adjusted, the angle of the lens 2 is not changed during the curing process, the manufacturing is simple, the manufacturing efficiency is higher, the cost is lower, the errors of machining and the adhesive quality can be compensated to a certain extent, and the laser production process is doubled.

[0066] The preferred embodiments of the present application are described above, and the present application is not limited to the above. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made in the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A laser lens fixing device, characterized in that, include: A frame assembly, wherein the frame assembly has a lens mounting hole for mounting a lens, and the inner diameter of the lens mounting hole matches the outer diameter of the lens; A lens mounting portion is formed radially inside the lens mounting hole. The lens mounting portion is used to abut against the end face of the lens edge. An adhesive is applied to the lens mounting portion. A clamping fixture includes two clamping arms, with a lens clamping cavity between the two clamping arms, the lens clamping cavity being used to clamp a lens; The clamping fixture and the frame assembly are detachably and securely connected by a connecting assembly; The connecting assembly includes a first adjusting bolt, a second adjusting bolt, and a third adjusting bolt; The upper ends of the two clamping arms are provided with extension arms facing the frame assembly. The upper ends of the two clamping arms are formed with extension arms in the horizontal direction. The extension arms extend towards the frame assembly and together with the two clamping arms form an approximately inverted L-shaped structure. The extension arms are configured to abut against the upper end face of the frame assembly. The first adjusting bolt passes through the extension arm and is threadedly connected to the frame assembly. The second adjusting bolt and the third adjusting bolt are located at the lower part of the clamping fixture and on both sides of the lens clamping cavity. After passing through the clamping fixture, the second adjusting bolt and the third adjusting bolt are threadedly connected to the frame assembly. A connection gap is provided between the extension arms of the two clamping arms. The first adjusting bolt passes through the connection gap and is threaded to the upper end of the frame assembly. The first adjusting bolt can be pressed on the extension arm, and the pitch angle of the clamping arm can be adjusted by adjusting the pressing force of the first adjusting bolt.

2. The laser lens fixing device according to claim 1, characterized in that, The second adjusting bolt and the third adjusting bolt are symmetrically distributed along the vertical centerline of the lens clamping cavity; The second and third adjusting bolts are pressed against the front side of the clamping fixture. The pitch angle of the clamping arm and the deflection angle of the clamping arm along the vertical axis are adjusted by adjusting the clamping force of the second and third adjusting bolts.

3. The laser lens fixing device according to claim 1, characterized in that, The eyeglass frame assembly includes a frame base and an eyeglass frame, the eyeglass frame being detachably fixed to the frame base, and the lens mounting holes being formed on the eyeglass frame.

4. The laser lens fixing device according to claim 3, characterized in that, The two sides of the eyeglass frame extend outward to form mounting portions, and the mounting portions and the base of the eyeglass frame are fixedly connected by connecting screws.

5. The laser lens fixing device according to any one of claims 1 to 4, characterized in that, The two clamping arms are connected by clamping screws, and the clamping force of the two clamping arms can be adjusted by turning the clamping screws.

6. The laser lens fixing device according to claim 2, characterized in that, The clamping fixture is made of aluminum.

7. The laser lens fixing device according to claim 1, characterized in that, The adhesive is a UV-curable adhesive.

8. A method for fixing a laser lens, characterized in that, Using the laser lens fixing device as described in any one of claims 2 to 7, and including the following steps: Adhesive is applied to the lens mounting portion; Insert the lens into the lens clamping cavity and clamp it; The clamping fixture is installed onto the lens frame assembly by means of the first adjusting screw. A horizontally collimated beam is incident on the front end of the lens. The first adjusting screw is then turned to adjust the pitch angle of the clamping arm to adjust the pitch angle of the lens so that the reflected beam returns roughly along the original optical path. Tighten the second and third adjusting screws to adjust the pitch and deflection angles of the lens so that the reflected beam completely coincides with the incident beam; Allow the adhesive to cure, and then remove the clamping fixture after the adhesive has cured.

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