Positioning mechanism of optical lens

Abstract

The utility model relates to a positioning mechanism of an optical lens, and aims to solve the problems that the contact area between a positioning device and the optical lens is relatively small, the positioning stability of the optical lens is relatively poor, and the positioning precision is relatively high due to the fact that the sizes of the optical lenses are different and the radians of the arc-shaped edges are also different in the prior art. The positioning device comprises a bottom plate, adjusting grooves are formed in the two sides of the top of the bottom plate, two adjusting blocks are slidably connected into each adjusting groove, and an inverted-U-shaped frame is fixedly connected between the tops of the two adjusting blocks on the same side; wherein a first two-way screw rod is rotatably connected between two sides of an inner cavity of one adjusting groove, and the two adjusting blocks close to one side of the first two-way screw rod are arranged on the outer side of the first two-way screw rod in a threaded and sleeved mode. And the contact area of the fixing band and the outer arc of the optical lens is increased, so that the positioning stability of the optical lens is improved.

Description

Technical Field

[0001] The utility model relates to the field of optical lens processing, in particular to a positioning mechanism for an optical lens. Background Art

[0002] Optical lenses are made by mixing high-purity oxides of silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, barium, etc. according to a specific formula, melting them at high temperature in a platinum crucible, stirring them evenly with ultrasound to remove bubbles, and then slowly cooling them over a long period of time to form lenses. The finished lenses need to be processed, so a positioning device is required.

[0003] Since the sizes of optical lenses are different and the curvature of the curved edges is also different, the contact area between the positioning device and the optical lens is small, resulting in poor stability in positioning the optical lens and a limited scope of application of the positioning device. Therefore, a new technical solution needs to be designed to solve this problem. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a positioning mechanism for an optical lens to solve the current technical problem that due to the different sizes of optical lenses and the different curvatures of the curved edges, the contact area between the positioning device and the optical lens is small, resulting in poor stability in positioning the optical lens, resulting in a limited scope of application of the positioning device.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: design a positioning mechanism for an optical lens, comprising a bottom plate, both sides of the top of the bottom plate are provided with adjustment grooves, two adjustment blocks are slidably connected in the two adjustment grooves, an inverted U-shaped frame is fixedly connected between the tops of the two adjustment blocks on the same side, a first bidirectional screw is rotatably connected between the two sides of the inner cavity of one of the adjustment grooves, and the two adjustment blocks close to one side of the first bidirectional screw are threadedly sleeved on the outside of the first bidirectional screw, a first servo motor is installed at one end of the bottom plate, and the driving end of the first servo motor is connected to the first bidirectional screw;

[0006] A slide groove is provided at the top of the inner cavity of the inverted U-shaped frame, and second bidirectional screw rods are rotatably connected to both sides of the inner cavity of the slide groove. Adjustment rods are slidably connected to both sides of the inner cavity of the slide groove, and the two adjustment rods are threadedly sleeved on the outside of the second bidirectional screw rod. A second servo motor is installed on one side of the inverted U-shaped frame, and the driving end of the second servo motor is connected to the second bidirectional screw rod. A fixing belt is provided between the outer ends of the two adjustment rods.

[0007] Preferably, one end of the fixing belt passes through the adjusting rod, and a limiting groove is provided on the adjusting rod near the end through which the fixing belt passes, and a third bidirectional screw rod is rotatably connected between the two sides of the inner cavity of the limiting groove, and two limiting blocks are slidably connected in the limiting groove, and the two limiting blocks are threadedly sleeved on the outer side of the third bidirectional screw rod, and a splint is fixedly connected to the two limiting blocks.

[0008] Preferably, one end of the third bidirectional screw is rotated to pass through the adjusting rod and is placed outside the adjusting rod, and a hand wheel is fixedly connected to the third bidirectional screw outside the adjusting rod.

[0009] Preferably, the length dimension of the clamping plate is greater than the width dimension of the fixing belt.

[0010] Preferably, the bottom of the adjusting rod and the bottom of the fixing belt are both arranged to fit the surface of the bottom plate.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model places the optical lens to be positioned on the bottom plate through the combination of structures such as the bottom plate, the inverted U-shaped frame, the adjustment groove, the adjustment block, the first bidirectional lead screw, the first servo motor, the adjustment rod, the fixing belt, the slide groove, the second bidirectional lead screw and the second servo motor, and then starts the first servo motor to drive the first bidirectional lead screw to rotate, and cooperates with the adjustment block to guide and move in the adjustment groove, thereby driving the two inverted U-shaped frames to approach each other, thereby driving the fixing belts to move and limit on both sides of the optical lens, so that the fixing belts can fit on the arc of the outer side of the optical lens, and then starts the second servo motor to drive the second bidirectional lead screw to rotate, and cooperates with the adjustment rod to guide and move in the slide groove, thereby driving the two adjustment rods to approach the optical lens, thereby increasing the contact area between the fixing belt and the outer arc of the optical lens, thereby improving the stability of the optical lens positioning, and the two fixing belts move synchronously, so that the optical lens can be positioned in the center.

[0013] 2. The utility model combines a third bidirectional screw, a splint, a limit groove, a limit block and a splint. The distance between the two splints is increased by turning the third bidirectional screw, and then the fixing belt is pulled to adjust the length of the fixing belt between the two adjustment rods. When the length is adjusted to a suitable length, the third bidirectional screw is turned to drive the splint to clamp the fixing belt, thereby adjusting the length of the fixing belt according to the size of the optical lens to improve the applicability of the optical lens positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the side structure of the inverted U-shaped frame and the adjusting rod connected to the utility model;

[0016] Figure 3 This is a schematic diagram of the bottom surface structure of the inverted U-shaped frame and the adjusting rod connected to the utility model;

[0017] Figure 4 It is an enlarged view of point A of the utility model;

[0018] In the figure: 1, bottom plate; 11, adjustment slot; 12, first bidirectional screw; 13, adjustment block; 14, first servo motor; 2, inverted U-shaped frame; 21, second servo motor; 22, adjustment rod; 23, slide slot; 24, second bidirectional screw; 3, fixing belt; 4, hand wheel; 41, clamping plate; 42, limit slot; 43, third bidirectional screw; 44, limit block. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Embodiment 1: A positioning mechanism for an optical lens, see Figures 1 to 4 , comprising a bottom plate 1, both sides of the top of the bottom plate 1 are provided with adjustment slots 11, two adjustment blocks 13 are slidably connected in the two adjustment slots 11, an inverted U-shaped frame 2 is fixedly connected between the tops of the two adjustment blocks 13 on the same side, a first bidirectional screw rod 12 is rotatably connected between the two sides of the inner cavity of one of the adjustment slots 11, and the two adjustment blocks 13 close to one side of the first bidirectional screw rod 12 are both threadedly sleeved on the outer side of the first bidirectional screw rod 12, a first servo motor 14 is installed at one end of the bottom plate 1, and the driving end of the first servo motor 14 is connected to the first bidirectional screw rod 12;

[0021] A slide groove 23 is provided at the top of the inner cavity of the inverted U-shaped frame 2, and second bidirectional screw rods 24 are rotatably connected to both sides of the inner cavity of the slide groove 23, and adjusting rods 22 are slidably connected to both sides of the inner cavity of the slide groove 23, and the two adjusting rods 22 are threadedly sleeved on the outside of the second bidirectional screw rod 24, and a second servo motor 21 is installed on one side of the inverted U-shaped frame 2, and the driving end of the second servo motor 21 is connected to the second bidirectional screw rod 24, and a fixing belt 3 is provided between the outer ends of the two adjusting rods 22. When working, the optical lens to be positioned is placed on the bottom plate 1, and then the first servo motor 14 is started to drive the first bidirectional screw rod 24 to rotate. The rod 12 rotates and cooperates with the adjustment block 13 to guide and move in the adjustment groove 11, thereby driving the two inverted U-shaped frames 2 to approach each other, thereby driving the fixing belt 3 to move and limit on both sides of the optical lens, so that the fixing belt 3 can fit on the arc on the outside of the optical lens, and then start the second servo motor 21 to drive the second bidirectional screw 24 to rotate, and cooperate with the adjustment rod 22 to guide and move in the slide groove 23, thereby driving the two adjustment rods 22 to approach the optical lens, thereby increasing the contact area between the fixing belt 3 and the arc on the outside of the optical lens, thereby improving the stability of the optical lens positioning, and the two fixing belts 3 move synchronously, so that the optical lens can be positioned in the center.

[0022] For details, see Figure 2 and Figure 4 One end of the fixing belt 3 passes through the adjusting rod 22, and the adjusting rod 22 is provided with a limiting groove 42 near the end through which the fixing belt 3 passes, and a third bidirectional screw rod 43 is rotatably connected between the two sides of the inner cavity of the limiting groove 42, and two limiting blocks 44 are slidably connected in the limiting groove 42, and the two limiting blocks 44 are threadedly sleeved on the outer sides of the third bidirectional screw rod 43, and the two limiting blocks 44 are fixedly connected with a clamping plate 41, and the distance between the two clamping plates 41 is increased by twisting the third bidirectional screw rod 43, and then the fixing belt 3 is pulled to adjust the length of the fixing belt 3 between the two adjusting rods 22, and when it is adjusted to a suitable length, the third bidirectional screw rod 43 is twisted to drive the clamping plate 41 to clamp the fixing belt 3, so that the length of the fixing belt 3 can be adjusted according to the size of the optical lens to improve the applicability of optical lens positioning.

[0023] For further information, see Figure 2 One end of the third bidirectional screw rod 43 rotates through the adjusting rod 22 and is placed on the outside of the adjusting rod 22. A handwheel 4 is fixedly connected to the third bidirectional screw rod 43 on the outside of the adjusting rod 22. Through the setting of the handwheel 4, it is convenient for personnel to hold and twist the third bidirectional screw rod 43 to rotate and adjust the length of the fixing belt 3.

[0024] It is worth noting that see Figure 4 The length of the splint 41 is greater than the width of the fixing belt 3, so as to ensure the firmness of the shoe cover and the fixing belt 3 by the splint 41.

[0025] It is worth noting that see Figure 1 The bottom of the adjusting rod 22 and the bottom of the fixing belt 3 are both arranged to fit the surface of the bottom plate 1, so as to avoid a gap between the fixing belt 3 and the bottom plate 1 affecting the positioning effect of the optical lens.

[0026] In addition, the components designed in the present invention are all universal standard parts or components known to technical personnel in the field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in the field, and there is no need to elaborate. The content protected by the present invention does not involve improvements to internal structures and methods.

[0027] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A positioning mechanism for an optical lens, comprising a base plate (1), characterized in that: Both sides of the top of the bottom plate (1) are provided with adjustment grooves (11), and two adjustment blocks (13) are slidably connected in the two adjustment grooves (11). An inverted U-shaped frame (2) is fixedly connected between the tops of the two adjustment blocks (13) on the same side. A first bidirectional screw rod (12) is rotatably connected between the two sides of the inner cavity of one of the adjustment grooves (11), and the two adjustment blocks (13) close to the first bidirectional screw rod (12) are both threadedly sleeved on the outer side of the first bidirectional screw rod (12). A first servo motor (14) is installed at one end of the bottom plate (1), and the driving end of the first servo motor (14) is connected to the first bidirectional screw rod (12); A slide groove (23) is provided at the top of the inner cavity of the inverted U-shaped frame (2), and second bidirectional screw rods (24) are rotatably connected to both sides of the inner cavity of the slide groove (23). Adjustment rods (22) are slidably connected to both sides of the inner cavity of the slide groove (23), and the two adjustment rods (22) are threadedly sleeved on the outer sides of the second bidirectional screw rod (24). A second servo motor (21) is installed on one side of the inverted U-shaped frame (2), and the driving end of the second servo motor (21) is connected to the second bidirectional screw rod (24). A fixing belt (3) is provided between the outer ends of the two adjustment rods (22).

2. The positioning mechanism of an optical lens as claimed in claim 1, characterized in that: One end of the fixing belt (3) passes through the adjusting rod (22), and a limiting groove (42) is provided near the end of the adjusting rod (22) through which the fixing belt (3) passes. A third bidirectional screw rod (43) is rotatably connected between the two sides of the inner cavity of the limiting groove (42), and two limiting blocks (44) are slidably connected in the limiting groove (42), and the two limiting blocks (44) are both threadedly sleeved on the outer side of the third bidirectional screw rod (43), and the two limiting blocks (44) are fixedly connected with a clamping plate (41).

3. The positioning mechanism of an optical lens as claimed in claim 2, characterized in that: One end of the third bidirectional screw rod (43) is rotated to penetrate the adjustment rod (22) and is placed outside the adjustment rod (22); a hand wheel (4) is fixedly connected to the third bidirectional screw rod (43) outside the adjustment rod (22).

4. The positioning mechanism of an optical lens as claimed in claim 2, characterized in that: The length dimension of the clamping plate (41) is greater than the width dimension of the fixing belt (3).

5. The positioning mechanism of an optical lens as claimed in claim 1, characterized in that: The bottom of the adjusting rod (22) and the bottom of the fixing belt (3) are both arranged to fit the surface of the bottom plate (1).

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