Positioning clamp for lens coating processing

Abstract

The utility model relates to the technical field of lens processing discloses a positioning fixture for lens coating processing, including work table and setting up the support on work table, install setting have positioning and clamping mechanism and rotation positioning mechanism on work table and support, the positioning and clamping mechanism includes setting up the first clamping plate and second clamping plate on the support, the first clamping plate and second clamping plate are used for clamping and fixing the periphery of lens, drive the first bidirectional screw rod rotation through the motor and drive the first clamping plate on the upper side mutual close movement, drive the first bevel gear rotation to this drive second bevel gear rotation simultaneously, drive the second bidirectional screw rod rotation through the second bevel gear rotation, drive the second clamping plate mutual close movement, to this can drive the first clamping plate and second clamping plate synchronous contraction movement, guarantee the central position always is square, to the periphery of lens is clamped to this improve the clamping stability of lens.

Description

Technical Field

[0001] This utility model belongs to the field of lens processing technology, specifically, it relates to a positioning fixture for lens coating processing. Background Technology

[0002] A lens is a transparent optical element whose main function is to refract and reflect light. Lenses can be used in various optical devices, such as telescopes, microscopes, and cameras. In the eyewear industry, lenses are an important element for correcting vision. They can correct the user's vision and provide a clear field of vision. During the processing of lenses, positioning fixtures are needed to clamp and fix the lenses.

[0003] A search revealed that CN222684740U discloses a coating fixture for processing plastic lenses. This fixture avoids the hassle of manually rotating the fixing plate to drive the clamping plate. During the fixing process, the plastic lens can be flipped, avoiding the trouble of unfixing and flipping the plastic lens again, saving time and effort, and thus improving processing efficiency.

[0004] The device uses curved clamps on both sides to hold the outer walls of the lens. However, the clamps can only hold the left and right outer walls of the lens, and cannot hold the top and bottom outer walls of the lens at the same time. As a result, the lens will still be unstable during processing, causing the lens to tilt and thus affecting the coating process.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To address the problem that the device uses curved clamps on both sides to hold the outer walls of the lens, but these clamps can only hold the left and right outer walls and cannot simultaneously hold the top and bottom outer walls, resulting in instability and tilting of the lens during processing, thus affecting the coating process, the basic concept of this invention is as follows:

[0007] A positioning fixture for lens coating processing includes a worktable and a support mounted on the worktable. A positioning clamping mechanism and a rotation positioning mechanism are installed on the worktable and the support.

[0008] The positioning and clamping mechanism includes a first clamping plate and a second clamping plate disposed on the bracket. The first clamping plate and the second clamping plate are used to clamp and fix the four sides of the lens.

[0009] The rotation positioning mechanism includes a positioning column rotatably mounted on the worktable, which drives the support to rotate.

[0010] In a preferred embodiment of this utility model, the positioning and clamping mechanism includes a mounting plate connected to the outer wall of the workbench. A motor is mounted on the top surface of the mounting plate. A first bidirectional lead screw is connected to the output end of the motor. A first threaded block is threadedly connected to the outer wall of the first bidirectional lead screw. The outer wall of the first threaded block away from the first bidirectional lead screw is connected to the outer wall of the first clamping plate. A first bevel gear is connected to the end of the first bidirectional lead screw away from the motor.

[0011] In a preferred embodiment of this utility model, the rotating positioning mechanism includes a positioning hole on the outer wall of the positioning column, a fixing block connected to the outer wall of the worktable, a sliding hole at the bottom end of the fixing block, a spring connected to the top end of the inner wall of the sliding hole, a positioning rod connected to the end of the spring away from the inner wall of the sliding hole, a pull plate connected to the end face of the positioning rod connected to the spring, the outer wall of the positioning rod being engaged with the inner wall of the positioning hole, and a rotating plate connected to the end of the positioning column away from the positioning hole, the rotating plate being rotatably mounted on the worktable.

[0012] In a preferred embodiment of this utility model, a support frame is connected to the outer wall of the bracket, a second bidirectional lead screw is rotatably provided on the inner wall of the support frame, a second threaded block is threadedly connected to the outer wall of the second bidirectional lead screw, the outer wall of the second threaded block away from the second bidirectional lead screw is connected to the outer wall of the second clamping plate, and a second bevel gear is connected to the end of the second bidirectional lead screw away from the inner wall of the support frame, the second bevel gear and the first bevel gear are meshed with each other.

[0013] In a preferred embodiment of the present invention, the outer wall of the first clamping plate is provided with a sliding groove, and the outer wall of the second clamping plate is slidably disposed on the inner wall of the sliding groove, and the two are fitted together.

[0014] In a preferred embodiment of this utility model, there are two positioning holes, which are distributed symmetrically on the outer wall of the positioning column.

[0015] In a preferred embodiment of this utility model, the inner wall of the positioning hole is properly fitted to the outer wall of the positioning rod.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention uses a motor to drive a first bidirectional lead screw to rotate, which in turn causes the first clamping plates above to move closer together. Simultaneously, it drives a first bevel gear to rotate, which in turn drives a second bevel gear to rotate. The rotation of the second bevel gear drives the second bidirectional lead screw to rotate, which in turn causes the second clamping plates to move closer together. This allows the first and second clamping plates to retract and move synchronously, ensuring that the center position remains square, thereby clamping the lens from all four sides and improving the clamping stability of the lens.

[0018] This invention releases the locking and limiting mechanism of the positioning post by pulling the pull plate upward to disengage the outer wall of the positioning rod from the inner wall of the top positioning hole. Then, the bracket can be rotated to rotate the lens by 180 degrees. After rotating, the positioning hole at the bottom of the positioning post rotates to the top. The spring returns and the positioning rod is reset and inserted into it, thus completing the flipping and positioning of the lens, so as to facilitate the processing of both ends of the lens.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a top-view structural diagram of the present invention;

[0023] Figure 3 This is a schematic diagram of the positioning and clamping mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the rotating positioning mechanism of this utility model.

[0025] In the diagram: 1. Workbench; 2. Support; 31. Positioning and clamping mechanism; 311. Mounting plate; 312. Motor; 313. First double-acting lead screw; 314. First threaded block; 315. First clamping plate; 316. First bevel gear; 317. Second bevel gear; 318. Second double-acting lead screw; 319. Support frame; 3110. Second threaded block; 3111. Second clamping plate; 32. Rotation positioning mechanism; 321. Fixing block; 322. Positioning rod; 323. Spring; 324. Pull plate; 325. Positioning post; 326. Positioning hole; 327. Rotating plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] like Figures 1 to 4 As shown, a positioning fixture for lens coating processing includes a worktable 1 and a support 2 mounted on the worktable 1. A positioning clamping mechanism 31 and a rotating positioning mechanism 32 are installed on the worktable 1 and the support 2. The positioning clamping mechanism 31 includes a first clamping plate 315 and a second clamping plate 3111 mounted on the support 2. The first clamping plate 315 and the second clamping plate 3111 are used to clamp and fix the four sides of the lens. The rotating positioning mechanism 32 includes a positioning post 325 rotatably mounted on the worktable 1. The positioning post 325 is used to drive the support 2 to rotate.

[0028] Furthermore, the positioning and clamping mechanism 31 includes a mounting plate 311 connected to the outer wall of the worktable 1. A motor 312 is mounted on the top surface of the mounting plate 311. A first bidirectional lead screw 313 is connected to the output end of the motor 312. A first threaded block 314 is threadedly connected to the outer wall of the first bidirectional lead screw 313. The outer wall of the first threaded block 314 away from the first bidirectional lead screw 313 is connected to the outer wall of the first clamping plate 315. A first bevel gear 316 is connected to the end of the first bidirectional lead screw 313 away from the motor 312.

[0029] Furthermore, a support frame 319 is connected to the outer wall of the bracket 2, and a second bidirectional lead screw 318 is rotatably connected to the inner wall of the support frame 319. A second threaded block 3110 is threadedly connected to the outer wall of the second bidirectional lead screw 318. The outer wall of the second threaded block 3110 away from the second bidirectional lead screw 318 is connected to the outer wall of the second clamping plate 3111. A second bevel gear 317 is connected to the end of the second bidirectional lead screw 318 away from the inner wall of the support frame 319. The second bevel gear 317 meshes with the first bevel gear 316.

[0030] Furthermore, the outer wall of the first clamping plate 315 is provided with a sliding groove, and the outer wall of the second clamping plate 3111 is slidably disposed on the inner wall of the sliding groove, and the two are fitted together. The sliding groove allows the second clamping plate 3111 to move inside it, thereby facilitating the clamping and fixing of the lens on the same horizontal line.

[0031] The rotating positioning mechanism 32 includes a positioning hole 326 on the outer wall of the positioning column 325. A fixing block 321 is connected to the outer wall of the worktable 1. A sliding hole is provided at the bottom end of the fixing block 321. A spring 323 is connected to the top of the inner wall of the sliding hole. A positioning rod 322 is connected to the end of the spring 323 away from the inner wall of the sliding hole. A pull plate 324 is connected to the end face of the positioning rod 322 and the spring 323. The outer wall of the positioning rod 322 is engaged with the inner wall of the positioning hole 326. A rotating plate 327 is connected to the end of the positioning column 325 away from the positioning hole 326. The rotating plate 327 is rotatably mounted on the worktable 1.

[0032] Furthermore, there are two positioning holes 326, which are distributed symmetrically on the outer wall of the positioning post 325. This allows the bracket 2 to be positioned after being flipped, thus facilitating stability processing.

[0033] Furthermore, the inner wall of the positioning hole 326 is properly fitted to the outer wall of the positioning rod 322, thereby improving the stability of the positioning rod 322 when it is engaged with the inner wall of the positioning hole 326.

[0034] The implementation principle of a positioning fixture for lens coating processing in this embodiment is as follows: When it is necessary to clamp the lens, the lens is first placed in the middle of the bracket 2. Then, the motor 312 is started, and its output end will drive the first bidirectional lead screw 313 to rotate. The rotation of the first bidirectional lead screw 313 will drive the first threaded blocks 314 to move closer to each other. As the first threaded blocks 314 move closer, the first clamping plates 315 on their outer walls will move closer to each other. At the same time, during the rotation of the first bidirectional lead screw 313, the first bevel gear 316 will be driven to rotate. The rotation of the first bevel gear 316 will drive the second bevel gear 317 that meshes with it to rotate. The rotation of the screw can drive the second bidirectional lead screw 318 to rotate. Since the threads on the second bidirectional lead screw 318 are opposite, the second threaded block 3110 can be driven to move closer to each other. The movement of the second threaded block 3110 can drive the second clamping plate 3111 to move closer to each other. At this time, the first clamping plate 315 and the second clamping plate 3111 will move and retract towards the center synchronously. During the retraction process, the center space is always kept square. In this way, the four outer walls of the lens can be clamped and fixed by the first clamping plate 315 and the second clamping plate 3111 on the left and right sides. Compared with clamping only the two outer walls of the lens, the clamping stability of the lens will be improved, thereby improving the processing stability of the lens.

[0035] When the other side of the lens needs to be processed, first pull the pull plate 324 upward, which will move the positioning rod 322 upward. During the upward movement of the positioning rod 322, the spring 323 will be squeezed. At this time, the outer wall of the positioning rod 322 can be separated from the inner wall of the positioning hole 326 on the top surface of the positioning post 325, thereby releasing the positioning of the positioning post 325. Then, the bracket 2 can be rotated by rotating the rotating plate 327 until the lens is rotated 180 degrees. During the rotation, the bottom positioning hole 326 of the positioning post 325 will be rotated to the top position. After that, the pull plate 324 is released and the spring 323 rebounds, which will drive the positioning rod 322 to reset and insert into the inner wall of the positioning hole 326, thus completing the snap-fit ​​positioning of the positioning post 325. This completes the angle adjustment and positioning of the lens, so as to facilitate the processing of both ends of the lens.

Claims

1. A positioning fixture for lens coating processing, comprising a worktable (1) and a support (2) disposed on the worktable (1), characterized in that, The workbench (1) and the support (2) are equipped with a positioning clamping mechanism (31) and a rotation positioning mechanism (32); The positioning and clamping mechanism (31) includes a first clamping plate (315) and a second clamping plate (3111) disposed on the bracket (2), and the first clamping plate (315) and the second clamping plate (3111) are used to clamp and fix the four sides of the lens; The rotation positioning mechanism (32) includes a positioning column (325) rotatably mounted on the workbench (1), and the positioning column (325) is used to drive the bracket (2) to rotate.

2. The positioning fixture for lens coating processing according to claim 1, characterized in that, The positioning and clamping mechanism (31) includes a mounting plate (311) connected to the outer wall of the workbench (1). A motor (312) is mounted on the top surface of the mounting plate (311). A first bidirectional lead screw (313) is connected to the output end of the motor (312). A first threaded block (314) is threaded to the outer wall of the first bidirectional lead screw (313). The outer wall of the first threaded block (314) away from the first bidirectional lead screw (313) is connected to the outer wall of the first clamping plate (315). A first bevel gear (316) is connected to the end of the first bidirectional lead screw (313) away from the motor (312).

3. The positioning fixture for lens coating processing according to claim 1, characterized in that, The rotating positioning mechanism (32) includes a positioning hole (326) on the outer wall of the positioning column (325). A fixing block (321) is connected to the outer wall of the worktable (1). A sliding hole is provided at the bottom end of the fixing block (321). A spring (323) is connected to the top end of the inner wall of the sliding hole. A positioning rod (322) is connected to the end of the spring (323) away from the inner wall of the sliding hole. A pull plate (324) is connected to the end face of the positioning rod (322) connected to the spring (323). The outer wall of the positioning rod (322) is engaged with the inner wall of the positioning hole (326). A rotating plate (327) is connected to the end of the positioning column (325) away from the positioning hole (326). The rotating plate (327) is rotatably mounted on the worktable (1).

4. A positioning fixture for lens coating processing according to claim 1, characterized in that, The bracket (2) is connected to a support frame (319) on its outer wall. The support frame (319) is rotatably connected to a second bidirectional lead screw (318) on its inner wall. The second bidirectional lead screw (318) is threadedly connected to a second threaded block (3110) on its outer wall. The outer wall of the second threaded block (3110) away from the second bidirectional lead screw (318) is connected to the outer wall of the second clamping plate (3111). The second bidirectional lead screw (318) away from the inner wall of the support frame (319) is connected to a second bevel gear (317). The second bevel gear (317) meshes with the first bevel gear (316).

5. A positioning fixture for lens coating processing according to claim 2, characterized in that, The outer wall of the first clamping plate (315) is provided with a through groove, and the outer wall of the second clamping plate (3111) is slidably disposed on the inner wall of the through groove, and the two are fitted together.

6. A positioning fixture for lens coating processing according to claim 3, characterized in that, There are two positioning holes (326), and the positioning holes (326) are distributed on the outer wall of the positioning post (325) in a symmetrical structure.

7. A positioning fixture for lens coating processing according to claim 3, characterized in that, The inner wall of the positioning hole (326) fits snugly against the outer wall of the positioning rod (322).

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