Precise optical lens positioning device

Abstract

The utility model discloses a precise optical lens positioning device which comprises a positioning table installed on machining equipment, a placing table is fixed to the top of the positioning table, an annular base is fixed to the top of the positioning table, the placing table is located on the inner side of the annular base, the outer wall of the annular base is rotationally connected with an annular plate, and a clamping assembly is installed in the annular plate. By designing the clamping assembly, when the device is used for positioning, an annular plate is slowly poked by hand to rotate, so that an arc groove rotates, a pulley is pressed, the pulley rolls while driving a sliding plate to move towards the central position of an annular seat, and finally, six clamping plates are synchronously attached to the outer wall of an optical lens. In this way, when the optical lens is fixed, stress is more uniform, so that the optical lens is more stable and is not prone to damage, the displacement amplitude is smaller through compression driving of the arc grooves during clamping operation, compared with a screw, the clamping precision is higher, adjustment is easier, and collision damage caused by excessive force is not prone to being caused.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens positioning, in particular to a precision optical lens positioning device. Background Art

[0002] Optical lens, also called camera lens or photographic lens, is an essential component in the optical imaging system. Its function is optical imaging and directly affects the quality of imaging, which in turn affects the implementation and effectiveness of the algorithm.

[0003] The applicant has found that during the assembly process of existing optical lenses, a precise positioning device is required to fix the position, thereby maintaining the stability of the optical lens. At the same time, during the clamping process, the force needs to be kept uniform to avoid damage to the workpiece. However, most of the current clamping devices use a bidirectional screw in combination with two arc-shaped clamping plates for clamping. For example, patent number CN221455740U discloses a lens assembly and positioning device for optical instrument manufacturing. Although this clamping method is universal, the optical lens is only subjected to forces in two directions during clamping. Excessive local pressure can easily lead to damage to the item or unstable clamping. At the same time, the displacement of the clamping plate is driven by rotating the screw, making the operation more difficult. It is easy for the clamp to be too tight or the force to be insufficient, and it is also easy for a collision to occur.

[0004] Therefore, the applicant proposes a precision optical lens positioning device to solve the problem. Utility Model Content

[0005] The utility model provides a precise optical lens positioning device, which solves the above-mentioned background problems.

[0006] In order to solve the above technical problems, the utility model provides a precision optical lens positioning device, including a positioning table installed on a processing equipment, a placing table fixed on the top of the positioning table, an annular seat fixed on the top of the positioning table, and the placing table is located on the inner side of the annular seat, the outer wall of the annular seat is rotatably connected to an annular plate, a clamping assembly is installed inside the annular plate, the clamping assembly includes a row of slides annularly installed in the slideway of the annular seat, the slide passes through the annular seat and a pulley is installed at the outer end, the pulley rolls in the arc groove inside the annular plate, a clamping plate is fixed at the inner end of the slide, the clamping plate is connected to the inner wall of the annular seat by a spring, and a positioning assembly is installed on the top of the positioning table for fixing the annular plate.

[0007] Preferably, the splint has an arc-shaped appearance, and a porous foam pad is bonded to the clamping surface of the splint.

[0008] Preferably, a row of ball grooves are provided on the inner side and bottom of the annular plate, and rolling steel balls are installed in the grooves, and the steel balls roll in the grooves on the top of the positioning platform and the side wall of the annular seat respectively.

[0009] Preferably, the positioning assembly includes a vertical plate fixed on the top of the positioning platform, a square rod passes through the sliding hole of the vertical plate, an arc-shaped tooth plate is fixed at one end of the square rod, and the arc-shaped tooth plate can engage with the tooth block on one side of the annular plate, one end of the square rod is integrally connected to the square plate, and the square plate and the vertical plate are connected by spring 2.

[0010] Preferably, a toggle rod is installed on the top of the annular plate at the end away from the vertical plate, and an anti-slip rubber sleeve is bonded to the outer wall of the toggle rod.

[0011] Preferably, the placing platform is located below the clamping plate, and a hemispherical anti-slip protrusion is provided on the surface of the placing platform.

[0012] Preferably, a row of dust guide holes is provided in a ring shape on the top of the positioning platform, and the dust guide holes are located between the annular seat and the placement platform.

[0013] Compared with related technologies, the precision optical lens positioning device provided by the present invention has the following beneficial effects:

[0014] 1. The utility model designs a clamping assembly. When the device is positioned, the annular plate is slowly rotated by hand to rotate the arc groove, and then the pulley is pressed, so that the pulley rolls while driving the slide plate to move toward the center position of the annular seat, and finally the six clamping plates are synchronously fitted to the outer wall of the optical lens. In this way, the optical lens is more evenly stressed when fixed, thereby being more stable and less prone to damage. In addition, the displacement amplitude driven by the pressure of the arc groove is smaller during the clamping operation. Compared with the screw, the clamping accuracy is higher and easier to adjust, and it is less likely to cause collision damage caused by excessive force, thereby achieving a precise positioning effect.

[0015] 2. The utility model is designed with a positioning assembly and a toggle lever. When fixing the optical lens, you can first pull the square rod with one hand to slide it on the vertical plate, and the arc-shaped tooth plate will disengage from the tooth block. At this time, the other hand pinches the toggle lever to drive the annular plate to rotate for positioning. After the positioning is completed, slowly release the force, and the spring 2 drives the arc-shaped tooth plate to return to its original position and re-engage the tooth blocks in other positions to fix it. In this way, the additional fixing structure compensates for the problem that the traditional screw drive is easy to loosen, because some vibration is inevitable during processing, and the operation is convenient and is carried out simultaneously with the clamping operation, which further improves the stability of the positioning device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the utility model Figure Two The annular seat and the annular plate are in a cross-sectional state;

[0018] Figure 3 This is a schematic diagram of the overall top view of the structure of the utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the positioning component of the present utility model;

[0020] Figure 5 This is a schematic diagram of the cutaway three-dimensional structure of the annular seat of the present invention;

[0021] Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning platform of the utility model;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the annular seat of the present utility model.

[0023] Numbers in the figure: 1. Positioning platform; 11. Dust guide hole; 2. Annular seat; 3. Placing platform; 4. Annular plate; 41. Tooth block; 42. Toggle rod; 43. Arc groove; 44. Steel ball; 5. Clamping assembly; 51. Slide plate; 52. Clamping plate; 53. Spring 1; 54. Pulley; 6. Positioning assembly; 61. Vertical plate; 62. Square rod; 63. Arc tooth plate; 64. Spring 2. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] Depend on Figures 1-7 The utility model provides a precision optical lens positioning device, including a positioning table 1 installed on a processing equipment, a placing table 3 is fixed on the top of the positioning table 1, a ring seat 2 is fixed on the top of the positioning table 1, and the placing table 3 is located on the inner side of the ring seat 2, the outer wall of the ring seat 2 is rotatably connected to the ring plate 4, a clamping assembly 5 is installed inside the ring plate 4, the clamping assembly 5 includes a row of slides 51 annularly installed in the slideway of the ring seat 2, the slide 51 passes through the ring seat 2 and a pulley 54 is installed at the outer end, the pulley 54 rolls in the arc groove 43 on the inner side of the ring plate 4, a clamping plate 52 is fixed at the inner end of the slide 51, the clamping plate 52 is connected to the inner wall of the ring seat 2 with a spring 53, and a positioning assembly 6 is installed on the top of the positioning table 1 for fixing the ring plate 4.

[0026] By designing the clamping assembly 5, when the device is processed, the positioning table 1 is installed on the processing table as required, and then the optical lens is placed at the center of the placement table 3. The six slides 51 evenly distributed in an annular shape pass through the sliding opening of the annular seat 2 and are slidably connected. At this time, the annular plate 4 is slowly rotated by hand to rotate the arc groove 43. Since the arc surface of the arc groove 43 extends toward the inner wall of the annular plate 4, the contact surface of the arc groove 43 and the pulley 54 will also extend toward the inner wall of the annular plate 4, which will then press the pulley 54, causing the pulley 54 to roll while driving the slide 51 to move toward the center of the annular seat 2. , and finally the six clamps 52 are synchronously fitted to the outer wall of the optical lens, and then the annular plate 4 can be fixed in position through the positioning component 6. In this way, the optical lens is subjected to more uniform force when fixed, thereby being more stable and not prone to damage. In addition, the displacement amplitude driven by the pressure of the arc groove 43 is smaller during the clamping operation. Compared with the screw, the clamping accuracy is higher and easier to adjust, and it is not easy to cause collision damage caused by excessive force. After the processing is completed, the spring 1 53 can drive the clamp 52 to automatically reset. It should be noted that the slide 51 is square in design, so it will not rotate in the sliding mouth of the annular seat 2.

[0027] The clamping plate 52 has an arc-shaped appearance, and a porous foam pad 55 is bonded to the clamping surface of the clamping plate 52 .

[0028] Furthermore, when the six clamps 52 clamp the optical lens, their edges are close to each other and roughly merge into an annular plate, so that the clamping is more stable. At the same time, the porous foam pad 55 uses its own elasticity to further improve the clamping effect and avoid direct contact causing wear to the equipment.

[0029] A row of ball grooves are provided on the inner side and bottom of the annular plate 4 , and rolling steel balls 44 are installed in the grooves. The steel balls 44 roll in the grooves on the top of the positioning platform 1 and the side wall of the annular seat 2 respectively.

[0030] Furthermore, the rotational connection achieved by the inner steel ball 44 of the annular plate 4 and the groove on the side wall of the annular seat 2 is very stable, and the bottom steel ball 44 rolls on the top of the positioning platform 1 to provide additional support force for the annular plate 4, reducing the support of the inner steel ball 44, which is very practical.

[0031] Depend on Figures 1-4 It is given that the positioning assembly 6 includes a vertical plate 61 fixed on the top of the positioning platform 1, and a square rod 62 passes through the sliding hole of the vertical plate 61. An arc-shaped tooth plate 63 is fixed at one end of the square rod 62, and the arc-shaped tooth plate 63 can engage with the tooth block 41 on one side of the annular plate 4. One end of the square rod 62 is integrally connected with the square plate, and the square plate and the vertical plate 61 are connected by a spring 2 64. A toggle rod 42 is installed at the top of the annular plate 4 at the end away from the vertical plate 61, and the outer wall of the toggle rod 42 is bonded with a non-slip rubber sleeve.

[0032] By designing the positioning assembly 6 and the toggle rod 42, in the initial state, the arcuate tooth plate 63 engages the tooth block 41 to fix the annular plate 4. Then, when fixing the optical lens, first pull the square rod 62 with one hand to slide on the vertical plate 61, and the arcuate tooth plate 63 disengages the tooth block 41. At this time, the other hand pinches the toggle rod 42 to drive the annular plate 4 to rotate for positioning. After the positioning is completed, slowly release the force, and the spring 2 64 drives the arcuate tooth plate 63 to reset and re-engage the tooth block 41 at other positions to form a fixation. In this way, the additional fixing structure compensates for the problem that the traditional screw drive is easy to loosen, because some vibration is inevitable during processing, and the operation is convenient and is carried out simultaneously with the clamping operation, which further improves the stability of the positioning device. It should be noted that the tooth block 41 can adopt a high-density annular arrangement distribution design, so that it can be better applied to optical lenses of different sizes.

[0033] Depend on Figure 3 and Figure 7 It is shown that the placement platform 3 is located below the splint 52, and the surface of the placement platform 3 is provided with hemispherical anti-slip protrusions, and a row of dust guide holes 11 are provided in a ring shape on the top of the positioning platform 1, and the dust guide holes 11 are located between the annular seat 2 and the placement platform 3.

[0034] In the auxiliary optimization design of the positioning structure, the anti-slip protrusion makes it difficult for the optical lens to slide on the surface of the placement table 3, and the dust guide hole 11 can discharge the dust in the gap between the annular seat 2 and the placement table 3 after processing is completed, which is very practical. It should be noted that the anti-slip protrusion can also be designed as an anti-slip strip and other related structures. These are all existing conventional designs, designed according to different types of optical lenses, and are not limited here.

[0035] Working principle: The positioning table 1 is installed on the processing table as required, and then the optical lens is placed at the center of the placement table 3. At this time, one hand pulls the square rod 62 to slide on the vertical plate 61, and the arc tooth plate 63 disengages the tooth block 41, and the other hand pinches the toggle rod 42 to drive the annular plate 4 to rotate for positioning, so that the arc groove 43 rotates, and then presses the pulley 54, so that the pulley 54 rolls while driving the slide plate 51 to move toward the center position of the annular seat 2, and finally makes the six splints 52 synchronously fit the outer wall of the optical lens. After the positioning is completed, slowly release the force, and the spring 2 64 drives the arc tooth plate 63 to reset and re-engage the tooth blocks 41 in other positions to form a fixed position, and finally the processing operation can be carried out.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision optical lens positioning device, comprising a positioning table (1) mounted on a processing device, a placement table (3) fixed on the top of the positioning table (1), characterized in that: An annular seat (2) is fixed on the top of the positioning platform (1), and the placement platform (3) is located inside the annular seat (2). An annular plate (4) is rotatably connected to the outer wall of the annular seat (2), and a clamping assembly (5) is installed inside the annular plate (4); The clamping assembly (5) includes a row of slide plates (51) annularly mounted in a slideway of the annular seat (2), the slide plates (51) passing through the annular seat (2) and having a pulley (54) mounted on the outer end thereof, the pulley (54) rolling in an inner arc groove (43) of the annular plate (4), a clamping plate (52) fixed to the inner end of the slide plate (51), and a spring (53) connecting the clamping plate (52) and the inner wall of the annular seat (2); A positioning assembly (6) is installed on the top of the positioning platform (1) for fixing the annular plate (4).

2. A precision optical lens positioning device according to claim 1, characterized in that: The clamping plate (52) has an arc-shaped appearance, and a porous foam pad (55) is bonded to the clamping surface of the clamping plate (52).

3. The precision optical lens positioning device according to claim 1, characterized in that: A row of ball grooves are provided on the inner side and bottom of the annular plate (4), and rolling steel balls (44) are installed in the grooves. The steel balls (44) roll in the grooves on the top of the positioning platform (1) and the side wall of the annular seat (2).

4. The precision optical lens positioning device according to claim 1, characterized in that: The positioning assembly (6) includes a vertical plate (61) fixed on the top of the positioning platform (1), a square rod (62) passing through the sliding hole of the vertical plate (61), an arc-shaped tooth plate (63) fixed at one end of the square rod (62), and the arc-shaped tooth plate (63) can be engaged with the tooth block (41) on one side of the annular plate (4), one end of the square rod (62) is integrally connected to the square plate, and the square plate and the vertical plate (61) are connected by a second spring (64).

5. The precision optical lens positioning device according to claim 4, characterized in that: A toggle rod (42) is installed on the top of the annular plate (4) at the end away from the vertical plate (61), and an anti-slip rubber sleeve is bonded to the outer wall of the toggle rod (42).

6. The precision optical lens positioning device according to claim 1, characterized in that: The placing platform (3) is located below the clamping plate (52), and a hemispherical anti-slip protrusion is provided on the surface of the placing platform (3).

7. The precision optical lens positioning device according to claim 1, characterized in that: A row of dust guide holes (11) is provided in an annular shape on the top of the positioning platform (1), and the dust guide holes (11) are located between the annular seat (2) and the placement platform (3).

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