Positioning tool for high-precision production of optical lens

Abstract

The utility model relates to the technical field of optical lens processing, in particular to an optical lens high-precision production positioning tool which comprises a base and supporting legs, and a positioning box disassembling structure is arranged above an optical lens taking-out structure. Through cooperation of the positioning box dismounting structure and the shell, an operator holds the positioning box by hand, the lower end of the positioning box slides towards a sliding groove machined in the upper end of the shell, the sliding of the positioning box drives two second transverse blocks to move, the two second transverse blocks move to drive a plurality of protruding blocks to slide in a first transverse block, and after an optical lens is placed and positioned, the protruding blocks can slide in the first transverse block. Translation of the optical lens can be effectively limited, the requirement for high-precision machining is met, an optical lens taking-out structure is matched with a shell, an output shaft of a servo motor rotates to drive a connecting rod to rotate clockwise, a cylinder rotates to drive a transverse plate to slide upwards on two vertical rods, the situation that the optical lens is damaged due to improper stress is avoided, and the machining precision is improved. The success rate and the perfectness rate of taking out the optical lens are improved.

Description

Technical Field

[0001] This utility model relates to the field of optical lens processing technology, specifically to a high-precision positioning fixture for optical lens production. Background Technology

[0002] Optical lenses are usually made of transparent materials, such as glass or plastic, and their surfaces have a specific curvature. For a convex lens, when light enters the lens from the air, it is refracted towards the center of the lens, and after passing through the lens, it is refracted in a direction away from the center of the lens, so that parallel light rays converge to a point, which is called the focal point.

[0003] For example, a lens positioning fixture with authorization announcement number "CN217992202U" places transparent lens products on a positioning structure formed by the first lens limiting groove and the second lens limiting groove, which has a large range of movement. When different models of lens products are screen-printed or the first and second positioning blocks are damaged and need to be moved and replaced, it is only necessary to remove the limiting block. Since the positions of the first through hole and the second through hole are relatively fixed, the relative positions of the first positioning block and the second positioning block can be quickly and accurately fixed after the positioning block is replaced. However, with repeated clamping and disassembly during equipment use, the mating surfaces of this positioning fixture will wear down, and the already uneven surface may develop more scratches and pits, reducing the contact area. Under even small external forces, relative displacement will occur. During the production of optical lenses, external forces such as vibrations from equipment operation or slight collisions during processing can cause the positioning block to wobble or shift in this insufficiently contacted clamping structure, thus affecting the positioning accuracy of the lens and reducing the stability of the clamping. Furthermore, wear marks appear on the surface of its limiting protrusion, making the fit between it and the limiting groove even looser, failing to effectively fix the positioning block, resulting in a continuous decline in clamping stability. At the same time, because the size of the limiting groove of this positioning fixture is precisely matched with the outer dimensions of the lens, the gap between the two is extremely small after the lens is placed in the limiting groove. The operator can only manually pull out the lens directly, which is difficult to operate and inconvenient for the operator to remove. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that with the use of the positioning fixture, the snap-fit ​​structure will wear down the mating surfaces during repeated snap-fitting and disassembly. The originally uneven surface may develop more scratches and pits, reducing the contact area. Under a small external force, relative displacement will occur. Furthermore, because the size of the limiting groove of the positioning fixture is precisely matched with the outer size of the lens, the gap between the two is extremely small after the lens is placed in the limiting groove. The operator can only manually pull out the lens, which is difficult to operate and inconvenient for the operator to remove. Therefore, a high-precision positioning fixture for optical lens production is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a high-precision production positioning fixture for optical lenses, including a base and support legs. Multiple support legs are fixedly connected to the four corners of the lower end of the base. The lower ends of the support legs are in contact with the ground. A housing is fixedly connected to the upper end of the base. An optical lens removal structure is provided inside the housing. A positioning box disassembly structure is provided above the optical lens removal structure.

[0007] Preferably, the optical lens removal structure includes a servo motor, the outer wall of which is fixedly connected to the rear end of the housing, the output shaft of which is fixedly connected to a connecting rod, the end of which is fixedly connected to a cylinder, the outer wall of which abuts against a horizontal plate, the inner walls of the left and right sides of the horizontal plate are slidably connected to a vertical rod, the upper side of which is sleeved with a spring, the two ends of which are fixedly connected to the housing and the horizontal plate respectively, and a rectangular frame is fixedly connected to the upper end of the horizontal plate.

[0008] Preferably, the output shaft of the servo motor is rotatably connected to the housing via a bearing, and both the upper and lower ends of the vertical rod are fixedly connected to the housing.

[0009] Preferably, the positioning box disassembly structure includes a vertical block, the lower end of which is fixedly connected to the housing, and two first horizontal blocks are fixedly connected to the inner side of the vertical block. The inner walls of the left and right sides of the first horizontal blocks are slidably connected to protrusions, and the ends of the protrusions are fixedly connected to the second horizontal blocks. The inner walls of the first and second horizontal blocks are threaded with bolts.

[0010] Preferably, the outer wall of the rectangular frame is slidably connected to the housing, and the upper end of the rectangular frame extends into the interior of the positioning box.

[0011] Preferably, the end of the second horizontal block is fixedly connected to the positioning box, and the lower end of the positioning box is slidably connected to the groove machined on the upper end of the housing.

[0012] This utility model proposes a high-precision positioning fixture for optical lenses, which has the following advantages: Through the cooperation of the positioning box disassembly structure and the housing, the operator holds the positioning box and slides the lower end of the positioning box towards the groove machined on the upper end of the housing. The sliding of the positioning box drives the two second horizontal blocks to move, and the movement of the two second horizontal blocks drives multiple protrusions to slide inside the first horizontal block. The sliding of the protrusions inside the first horizontal block further improves the stability of the sliding and the accuracy of the positioning box's position. When the rear end of the positioning box abuts against the groove on the upper end of the housing, the threaded holes of the first and second horizontal blocks are at the same horizontal line. The positioning box is fixed by rotating bolts. The shape and size of the positioning box closely match the shape of the optical lens. After the optical lens is placed in the positioning box, it can effectively limit the translation of the optical lens. By limiting the horizontal movement of the optical lens, it ensures that the position of the optical lens relative to the processing equipment remains consistent during the processing, meeting the requirements of high-precision processing.

[0013] The optical lens reveals the fit between the structure and the housing. The output shaft of the servo motor rotates, causing the connecting rod to rotate clockwise. The connecting rod rotates, causing the cylinder to rotate. The cylinder rotates, causing the horizontal plate to slide upwards on the two vertical rods. The sliding of the horizontal plate compresses the spring. The movement of the horizontal plate causes the rectangular frame to move upwards, which in turn causes the optical lens to move upwards until it moves outside the positioning box. The servo motor is then turned off, and the operator removes the optical lens. The servo motor is then turned on again, causing the connecting rod to rotate counterclockwise. Because the spring is compressed, it always has a restoring force that keeps the horizontal plate in contact with the cylinder. Therefore, the connecting rod rotates counterclockwise... The rotation of the needle causes the horizontal plate to move downwards back to its original position. This structure can lift the optical lens from the positioning box. Compared with the traditional method of manually pulling out the optical lens, this method greatly reduces the difficulty of removing the optical lens. In the traditional method, the operator needs to use a lot of force to pinch the edge of the lens and overcome the friction between the optical lens and the positioning box to remove it. In this process, uneven force can easily cause the optical lens to break or be scratched. However, this optical lens removal structure can lift the optical lens, avoiding damage to the optical lens due to improper force, and improving the success rate and integrity rate of optical lens removal. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A front sectional view;

[0016] Figure 3 for Figure 2 Enlarged view of section A;

[0017] Figure 4 for Figure 2Top sectional view of the middle shell;

[0018] Figure 5 A 3D view of the servo motor, connecting rod, and cylinder;

[0019] Figure 6 This is a partial 3D view of the shell.

[0020] In the diagram: 1. Base, 2. Support leg, 3. Housing, 4. Optical lens removal structure, 401. Servo motor, 402. Connecting rod, 403. Cylinder, 404. Horizontal plate, 405. Vertical rod, 406. Spring, 407. Rectangular frame, 5. Positioning box disassembly structure, 501. Vertical block, 502. First horizontal block, 503. Second horizontal block, 504. Bolt, 505. Protrusion, 6. Positioning box. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] See attached document Figure 1-6 In this embodiment, a high-precision production positioning fixture for optical lenses includes a base 1 and support legs 2. Multiple support legs 2 are fixedly connected to the four corners of the lower end of the base 1. The lower ends of the support legs 2 are in contact with the ground. A housing 3 is fixedly connected to the upper end of the base 1. An optical lens removal structure 4 is provided inside the housing 3. A positioning box disassembly structure 5 is provided above the optical lens removal structure 4. The output shaft of the servo motor 401 is rotatably connected to the housing 3 through a bearing. The output shaft of the servo motor 401 rotates inside the housing 3 through the bearing.

[0023] Both ends of the vertical rod 405 are fixedly connected to the housing 3. The outer wall of the rectangular frame 407 is slidably connected to the housing 3. The rectangular frame 407 slides inside the housing 3. The upper end of the rectangular frame 407 extends into the interior of the positioning box 6. The rectangular frame 407 slides in the positioning box 505. The end of the second horizontal block 503 is fixedly connected to the positioning box 6. The movement of the positioning box 6 drives the second horizontal block 503 to move. The lower end of the positioning box 6 is slidably connected to the groove machined on the upper end of the housing 3. The positioning box 6 slides in the groove machined on the housing 3.

[0024] See attached document Figure 1 , Figure 4 and Figure 5 The optical lens removal structure 4 includes a servo motor 401. The outer wall of the servo motor 401 is fixedly connected to the rear end of the housing 3. The output shaft of the servo motor 401 is fixedly connected to a connecting rod 402. The rotation of the output shaft of the servo motor 401 drives the connecting rod 402 to rotate. The end of the connecting rod 402 is fixedly connected to a cylinder 403. The rotation of the connecting rod 402 drives the cylinder 403 to rotate. The outer wall of the cylinder 403 abuts against the horizontal plate 404. The rotation of the cylinder 403 drives the horizontal plate 404 to move.

[0025] The inner walls on both sides of the horizontal plate 404 are slidably connected to the vertical rod 405. The horizontal plate 404 slides on the vertical rod 405. The upper side of the vertical rod 405 is sleeved with the spring 406. The two ends of the spring 406 are fixedly connected to the housing 3 and the horizontal plate 404 respectively. The model of the spring 406 is selected according to actual needs, and only needs to meet the working requirements are selected. A rectangular frame 407 is fixedly connected to the upper end of the horizontal plate 404. The movement of the horizontal plate 404 drives the rectangular frame 407 to move.

[0026] See attached document Figure 1 , Figure 2 and Figure 3 The positioning box disassembly structure 5 includes a vertical block 501. The lower end of the vertical block 501 is fixedly connected to the housing 3. Two first horizontal blocks 502 are fixedly connected to the inner side of the vertical block 501. The inner walls of the left and right sides of the first horizontal blocks 502 are slidably connected to the protrusions 505. The protrusions 505 slide within the first horizontal blocks 503. The end of the protrusions 505 is fixedly connected to the second horizontal blocks 503. The movement of the second horizontal blocks 503 causes the protrusions 505 to move. The inner walls of the first horizontal blocks 502 and the second horizontal blocks 503 are threadedly connected to bolts 504. The bolts 504 fix the first horizontal blocks 502 and the second horizontal blocks 503 together.

[0027] Working principle:

[0028] Positioning operation of optical lenses:

[0029] Selection of positioning box:

[0030] In the field of optical lens manufacturing, there are many types of optical lenses with significant differences in shape, such as rectangular optical lenses and circular optical lenses. Therefore, a positioning box 6 that is matched with the optical lens that needs to be positioned is selected. The shape and size of the positioning box 6 are closely matched with the shape of the optical lens. After the optical lens is placed in the positioning box 6, it can effectively restrict the translation of the optical lens. The operator holds the positioning box 6 and slides the lower end of the positioning box 6 into the groove machined on the upper end of the housing 3 (e.g., Figure 6 The sliding of the positioning box 6 causes the two second horizontal blocks 503 to move. The movement of the two second horizontal blocks 503 causes multiple protrusions 505 to slide inside the first horizontal block 502. The sliding of the protrusions 505 inside the first horizontal block 502 further improves the stability of the sliding and the accuracy of the positioning box 6. When the rear end of the positioning box 6 abuts against the groove at the upper end of the housing 3 (e.g. Figure 1 At this time, the threaded holes of the first horizontal block 502 and the second horizontal block 503 are on the same horizontal line, and the positioning box 6 is fixed by rotating the bolt 504.

[0031] Positioning of the optical lens:

[0032] The operator places the optical lens on the rectangular frame 407 inside the positioning box 6. The shape and size of the positioning box 6 are closely matched with the shape of the optical lens. After the optical lens is placed in the positioning box 6, the translation of the optical lens can be effectively restricted. By restricting the horizontal movement of the optical lens, it is ensured that the position of the optical lens relative to the processing equipment remains consistent during the processing, thus meeting the requirements of high-precision processing and completing the positioning of the optical lens.

[0033] Removal of the optical lens:

[0034] After the optical lens is positioned and processed, the operator connects the external power supply to the servo motor 401 and starts the servo motor 401. The output shaft of the servo motor 401 rotates, driving the connecting rod 402 to rotate clockwise (e.g., Figure 4 The connecting rod 402 rotates, causing the cylinder 403 to rotate. The rotation of the cylinder 403 causes the horizontal plate 404 to slide upward on the two vertical rods 405 (e.g., Figure 2 The sliding of the horizontal plate 404 compresses the spring 406. The movement of the horizontal plate 404 causes the rectangular frame 407 to move upwards, which in turn moves the optical lens upwards until it moves outside the positioning box 6. The servo motor 401 is then turned off. The operator removes the optical lens and restarts the servo motor 401. The rotation of the servo motor 401 causes the connecting rod 402 to rotate counterclockwise. Because the spring 406 is compressed, it always has a restoring force, keeping the horizontal plate 404 in contact with the cylinder 403. Therefore, the counterclockwise rotation of the connecting rod 404 causes the horizontal plate 404 to move downwards back to its original position. The servo motor 401 is then turned off. The high-precision production positioning fixture for optical lenses completes the processing. This structure can lift the optical lens from the positioning box 6. Compared with the traditional method of manually pulling out the optical lens, this method greatly reduces the difficulty of removing the optical lens. In the traditional method, the operator needs to use a lot of force to pinch the edge of the lens and overcome the friction between the optical lens and the positioning box 6 to remove it. In this process, uneven force can easily cause the optical lens to break or be scratched. However, the optical lens removal structure 4 can lift the optical lens, avoiding damage to the optical lens due to improper force, and improving the success rate and integrity rate of optical lens removal.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A high-precision positioning fixture for optical lens production, comprising a base (1) and support legs (2), wherein multiple support legs (2) are fixedly connected to the four corners of the lower end of the base (1), characterized in that: The lower end of the support leg (2) is in contact with the ground, and the upper end of the base (1) is fixedly connected to the housing (3). The housing (3) is provided with an optical lens removal structure (4), and the optical lens removal structure (4) is provided with a positioning box disassembly structure (5) above it.

2. The high-precision positioning fixture for optical lens production according to claim 1, characterized in that: The optical lens removal structure (4) includes a servo motor (401). The outer wall of the servo motor (401) is fixedly connected to the rear end of the housing (3). The output shaft of the servo motor (401) is fixedly connected to a connecting rod (402). The end of the connecting rod (402) is fixedly connected to a cylinder (403). The outer wall of the cylinder (403) abuts against a horizontal plate (404). The inner walls on both sides of the horizontal plate (404) are slidably connected to a vertical rod (405). The upper side of the vertical rod (405) is sleeved with a spring (406). The two ends of the spring (406) are fixedly connected to the housing (3) and the horizontal plate (404) respectively. A rectangular frame (407) is fixedly connected to the upper end of the horizontal plate (404).

3. The high-precision positioning fixture for optical lens production according to claim 2, characterized in that: The output shaft of the servo motor (401) is rotatably connected to the housing (3) via a bearing, and both the upper and lower ends of the vertical rod (405) are fixedly connected to the housing (3).

4. The high-precision positioning fixture for optical lens production according to claim 1, characterized in that: The positioning box disassembly structure (5) includes a vertical block (501), the lower end of which is fixedly connected to the housing (3). Two first horizontal blocks (502) are fixedly connected to the inner side of the vertical block (501). The inner walls of the left and right sides of the first horizontal blocks (502) are slidably connected to the protrusions (505). The end of the protrusions (505) is fixedly connected to the second horizontal block (503). The inner walls of the first horizontal blocks (502) and the second horizontal blocks (503) are threadedly connected to bolts (504).

5. The high-precision positioning fixture for optical lens production according to claim 2, characterized in that: The outer wall of the rectangular frame (407) is slidably connected to the housing (3), and the upper end of the rectangular frame (407) extends into the interior of the positioning box (6).

6. The high-precision positioning fixture for optical lens production according to claim 4, characterized in that: The end of the second horizontal block (503) is fixedly connected to the positioning box (6), and the lower end of the positioning box (6) is slidably connected to the groove machined on the upper end of the housing (3).

Images