Positioning and limiting device for cutting plastic lens

Abstract

The utility model relates to plastic lens cutting technical field discloses a kind of positioning limiting device for plastic lens cutting, including bottom plate, lens seat, the top of the lens seat is equipped with multiple lens placing grooves, fixed mounting is positioned in the four corners of the lens seat Column, and the column is fixedly connected with bottom plate, the top of the bottom plate is fixedly installed with adsorption limiting component, the top of the lens seat is provided with positioning component, first by positioning component to the lens placed in lens placing groove is positioned, ensure that adsorption limiting component does not appear position deviation when adsorbing and limiting lens, ensure that the position of lens does not change in cutting process, and because adsorption limiting component is located at the bottom of lens, so in cutting process, adsorption limiting component can always maintain the adsorption and limit of lens, can effectively avoid that lens occurs position deviation in cutting process.

Description

Technical Field

[0001] This utility model relates to the field of plastic lens cutting technology, specifically a positioning and limiting device for cutting plastic lenses. Background Technology

[0002] Plastic lenses are widely used in eyeglasses, optical instruments, and other fields due to their advantages such as light weight and high impact resistance. During the processing of plastic lenses, the cutting step requires precise positioning and limiting of the lens to ensure dimensional accuracy.

[0003] Existing positioning methods often use rigid clamps to directly hold the edge of the lens, which can easily lead to scratches on the surface of the plastic lens and edge deformation. In addition, traditional devices have fixed positioning positions and cannot be adapted to plastic lenses of different sizes, resulting in poor versatility. Utility Model Content

[0004] The purpose of this invention is to provide a positioning and limiting device for cutting plastic lenses, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a positioning and limiting device for cutting plastic lenses, comprising a base plate and a lens holder, wherein the top of the lens holder is provided with multiple lens placement slots, and a column is fixedly installed at the four corners of the lens holder and the column is fixedly connected to the base plate, an adsorption limiting component is fixedly installed on the top of the base plate, and a positioning component is provided above the lens holder. The positioning component includes a second mounting plate, on which a center positioning component and an edge positioning component are provided. Multiple center positioning components and edge positioning components are provided, and the center positioning components correspond one-to-one with the lens placement slots. The edge positioning components are located at the four directions of the center positioning components. The center positioning components are pressed against the center of the lens, and the edge positioning components are blocked at the four edges of the lens. The top of the base plate is provided with a downward rotating component, and the movable end of the downward rotating component is fixedly connected to the second mounting plate.

[0006] Furthermore, the adsorption limiting component includes a mounting frame 1, an air chamber is fixedly installed at the bottom of the mounting frame 1, a connecting pipe is connected to the top of the air chamber, the connecting pipe passes through the mounting frame 1, a suction cup is connected to the top of the connecting pipe, multiple connecting pipes are provided, and each corresponds to a lens placement slot, a ventilation pipe is connected to the front and back of the air chamber, a solenoid valve is provided at the connection between the ventilation pipe and the air chamber, and the ventilation pipe is connected to the workshop negative pressure pipeline.

[0007] Furthermore, the center positioning component includes a fixed cylinder, which is fixedly connected to the mounting plate. A spring is fixedly installed on the top inner wall of the fixed cylinder, and a sliding piece is fixedly installed on the bottom end of the spring. The sliding piece is slidably disposed inside the fixed cylinder, and a sliding rod is fixedly installed on the bottom end of the sliding piece. The bottom end of the sliding rod extends out of the fixed cylinder, and the bottom end of the sliding rod is provided with an integrally formed round head, which presses against the lens.

[0008] Furthermore, the edge positioning component includes a tapered head, the top of which is fixedly mounted with a threaded rod, the top of which passes through the bottom of the mounting plate two, and the outer wall of the threaded rod is threaded with a nut.

[0009] Furthermore, the top of the lens holder is provided with a clearance groove, and the clearance groove corresponds one-to-one with the conical head.

[0010] Furthermore, the downward rotating component includes a cylinder, which is fixedly installed on the top of the base plate. A lifting plate is fixedly installed on the telescopic end of the cylinder. A motor is fixedly installed on the top of the lifting plate. A rotating shaft is fixedly installed on the output end of the motor. A connecting plate is fixedly installed on the top of the rotating shaft. A connecting rod is fixedly installed on the bottom front end of the connecting plate. A connecting frame is fixedly installed on the bottom end of the connecting rod. The four corners of the connecting frame are fixedly connected to the four corners of the mounting plate.

[0011] Furthermore, a guide ring is fixedly installed on the inner wall of the lifting plate, and a guide rod is inserted inside the guide ring. The bottom end of the guide rod is fixedly connected to the top of the base plate.

[0012] Furthermore, an installation component is fixedly installed on the bottom of the base plate. The installation component includes a U-shaped plate, which is fixedly installed on the bottom of the base plate. The top and bottom of the U-shaped plate are provided with installation holes. An integrally formed extension plate is provided on the side of the U-shaped plate, and rollers are provided on the extension plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. First, the positioning component positions the lens placed in the lens placement slot to ensure that the adsorption limiting component does not shift position when adsorbing and limiting the lens, and to ensure that the position of the lens does not change during the cutting process. Since the adsorption limiting component is located at the bottom of the lens, it can maintain adsorption and limiting of the lens during the cutting process, effectively preventing the lens from shifting position during the cutting process. 2. As the center positioning component moves down, the round head inside the center positioning component extends into the center of the lens, pressing the lens down. At the same time, the conical head pushes the lens from the side, aligning the center of the lens with the center of the lens placement slot, until the round head firmly presses the lens against the suction cup. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Structural diagram of the rear view; Figure 3 This utility model Figure 1 A structural diagram of the right side view; Figure 4 This is a structural schematic diagram of the front sectional view of the positioning component and the adsorption limiting component of this utility model; Figure 5 This is a schematic diagram of the exploded view of the lens holder and adsorption limiting component of this utility model; Figure 6 This is a schematic diagram of the structure of the downward rotating component of this utility model; Figure 7 This is a schematic diagram of the installation component of this utility model.

[0015] In the diagram: 1. Base plate; 2. Lens holder; 201. Lens placement slot; 3. Adsorption limiting component; 301. Mounting bracket one; 302. Air chamber; 303. Connecting pipe; 304. Suction cup; 305. Air exchange pipe; 4. Positioning component; 401. Mounting plate two; 402. Center positioning component; 403. Edge positioning component; 4021. Fixing cylinder; 4022. Spring; 4023. Sliding plate; 4024. 5. Sliding rod; 4025. Round head; 4031. Tapered head; 4032. Threaded rod; 5. Pressing rotating component; 501. Cylinder; 502. Lifting plate; 503. Motor; 504. Rotating shaft; 505. Connecting plate; 506. Connecting rod; 507. Connecting frame; 6. Guide ring; 7. Guide rod; 8. Mounting component; 801. U-shaped plate; 802. Mounting hole; 803. Extension plate; 804. Roller. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0017] Please see Figures 1-7This utility model provides a technical solution: a positioning and limiting device for cutting plastic lenses, including a base plate 1 and a lens holder 2. The top of the lens holder 2 is provided with multiple lens placement slots 201. Columns are fixedly installed at the four corners of the lens holder 2 and are fixedly connected to the base plate 1. An adsorption and limiting component 3 is fixedly installed on the top of the base plate 1. A positioning component 4 is provided above the lens holder 2. First, the positioning component 4 positions the lens placed in the lens placement slot 201 to ensure that the adsorption and limiting component 3 does not shift position when adsorbing and limiting the lens, ensuring that the position of the lens does not change during the cutting process. Because the adsorption and limiting component 3 is located at the bottom of the lens, it can maintain adsorption and limiting of the lens during the cutting process, effectively preventing the lens from shifting position during the cutting process. The positioning component 4 includes a mounting plate 401, on which a center positioning component 402 and an edge positioning component 403 are provided. Multiple center positioning components 402 and edge positioning components 403 are provided. The center positioning components 402 correspond one-to-one with the lens placement slot 201. The edge positioning components 403 are located at the four directions of the center positioning components 402. The center positioning components 402 press against the center of the lens, and the edge positioning components 403 block the four edges of the lens. The center positioning components 402 abut against the center of the lens for center positioning, and the edge positioning components 403 located on the four sides of the center positioning components 402 limit the four edges of the lens for lateral positioning. The top of the base plate 1 is provided with a pressing and rotating component 5. The movable end of the pressing and rotating component 5 is fixedly connected to the mounting plate 401. During positioning, the pressing and rotating component 5 drives the positioning component 4 to press down. After positioning is completed, the pressing and rotating component 5 lifts the positioning component 4 and then rotates the positioning component 4 to make the positioning component 4 and the lens holder 2 misaligned, so as to avoid the positioning component 4 blocking the cutting structure from cutting the lens. The adsorption limiting component 3 includes a mounting bracket 301. An air chamber 302 is fixedly mounted at the bottom of the mounting bracket 301. A connecting pipe 303 is connected to the top of the air chamber 302, passing through the mounting bracket 301. A suction cup 304 is connected to the top of the connecting pipe 303. Multiple connecting pipes 303 are provided, each corresponding to a lens placement slot 201. Air exchange pipes 305 are connected to both the front and back of the air chamber 302. A solenoid valve is installed at the connection point between the air exchange pipe 305 and the air chamber 302. 05 Connect to the negative pressure pipeline in the workshop. After the positioning component 4 positions the lens, the lens is pressed tightly onto the suction cup 304. At this time, by opening the solenoid valve at the exhaust port, the air chamber 302 is drawn into negative pressure, which in turn creates negative pressure at the suction cup 304, thus ensuring stable adsorption. After adsorption is completed, the solenoid valve is closed. After cutting is completed, the solenoid valve at the air inlet is opened, which makes the negative pressure state in the air chamber 302 disappear, thus reducing the adsorption of the lens by the suction cup 304, and the lens can be removed. The center positioning assembly 402 includes a fixed cylinder 4021, which is fixedly connected to the mounting plate 401. A spring 4022 is fixedly installed on the inner top wall of the fixed cylinder 4021, and a sliding plate 4023 is fixedly installed on the bottom end of the spring 4022. The sliding plate 4023 is slidably disposed inside the fixed cylinder 4021, and a sliding rod 4024 is fixedly installed on the bottom end of the sliding plate 4023. The bottom end of the sliding rod 4024 extends out of the fixed cylinder 4021, and the bottom of the sliding rod 4024... The end is provided with an integrally formed round head 4025, which presses on the lens. When the mounting plate 401 moves down, it can drive the entire center positioning component 402 to move down, so that the round head 4025 at the bottom of the center positioning component 402 extends into the center of the lens, and then presses the lens down. The spring 4022, the sliding plate 4023, and the sliding rod 4024 are used to elastically connect the round head 4025 to the fixed cylinder 4021 to control the degree of downward pressure and avoid damage to the lens. The edge positioning component 403 includes a conical head 4031, with a threaded rod 4032 fixedly installed at the top of the conical head 4031. The top of the threaded rod 4032 passes through the bottom of the mounting plate 401, and a nut is threaded onto the outer wall of the threaded rod 4032. The threaded rod 4032 is used to connect the mounting plate 401 and the conical head 4031, and also facilitates the replacement of the conical head 4031. The corresponding conical head 4031 can be selected according to the size of the lens. The conical end of the conical head 4031 is used to press against the side of the lens to position the lens on all four sides. The top of the lens holder 2 is provided with a clearance groove, and the clearance groove corresponds one-to-one with the conical head 4031, with the clearance conical head 4031 abutting against the lens holder 2; The downward rotating component 5 includes a cylinder 501, which is fixedly installed on the top of the base plate 1. A lifting plate 502 is fixedly installed on the telescopic end of the cylinder 501. A motor 503 is fixedly installed on the top of the lifting plate 502. A rotating shaft 504 is fixedly installed on the output end of the motor 503. A connecting plate 505 is fixedly installed on the top of the rotating shaft 504. A connecting rod 506 is fixedly installed on the bottom front end of the connecting plate 505. A connecting frame 507 is fixedly installed on the bottom end of the connecting rod 506. The four corners of the connecting frame 507 are fixedly connected to the four corners of the mounting plate 401. The cylinder 501 drives the lifting plate 502 to rise and fall, which in turn drives the motor 503 on the lifting plate 502 to rise and fall. The rise and fall of the motor 503 drives the structure connected to the motor 503 to rise and fall, which in turn drives the mounting plate 401 to rise and fall. The motor 503 drives the rotating shaft 504 to rotate, which in turn drives the structure connected to the rotating shaft 504 to rotate, and then drives the mounting plate 401 to rotate, so that the positioning component 4 is misaligned with the lens holder 2. A guide ring 6 is fixedly installed on the inner wall of the lifting plate 502. A guide rod 7 is inserted inside the guide ring 6. The bottom end of the guide rod 7 is fixedly connected to the top of the base plate 1. The guide ring 6 and the guide rod 7 are set to guide the lifting plate 502 so that the lifting plate 502 can only be raised and lowered vertically, and to prevent the lifting plate 502 from rotating when subjected to torque. A mounting component 8 is fixedly installed on the bottom of the base plate 1. The mounting component 8 includes a U-shaped plate 801, which is fixedly installed on the bottom of the base plate 1. Mounting holes 802 are provided on the top and bottom of the U-shaped plate 801. An integrally formed extension plate 803 is provided on the side of the U-shaped plate 801. Rollers 804 are provided on the extension plate 803. The U-shaped plate 801 is used to connect the base plate 1 to the guide rail or worktable. The rollers 804 can effectively avoid the friction force when the base plate 1 slides along the guide rail.

[0018] Working principle: In use, place the lenses one by one into the lens placement slot 201. Then, select the corresponding edge positioning component 403 according to the shape of the lens. Then, pass the threaded rod 4032 through the mounting plate 401 and fix it with a nut. After fixing, turn on the motor 503 to drive the rotating shaft 504 to rotate, which in turn drives the structure connected to the rotating shaft 504 to rotate, and then drives the mounting plate 401 to rotate, so that the positioning component 4 is vertically aligned with the lens seat 2. Turn on the cylinder 501 to drive the lifting plate 502 to descend, which in turn drives the motor 503 on the lifting plate 502 to descend. The descent of the motor 503 drives the structure connected to the motor 503 to descend, which in turn drives the mounting plate 401 to descend. The descent of the mounting plate 401 drives the center positioning component 402 and the edge positioning component 403 to descend. As the center positioning component 402 moves down... The round head 4025 inside the center positioning component 402 extends into the center of the lens, pressing the lens down. At the same time, the conical head 4031 pushes the lens from the side, aligning the center of the lens with the center of the lens placement slot 201, until the round head 4025 presses the lens firmly against the suction cup 304. At this point, the solenoid valve at the exhaust port is opened, creating a negative pressure inside the air chamber 302, which in turn creates a negative pressure at the suction cup 304, ensuring stable adsorption. The cylinder 501 is activated, causing the lifting plate 502 to move upward, separating the positioning component 4 from the lens holder 2. The motor 503 is activated, causing the rotating shaft 504 to reverse, causing the positioning component 4 to be misaligned from the lens holder 2, allowing for cutting. After cutting, the solenoid valve at the air inlet is opened, causing the negative pressure in the air chamber 302 to disappear, which reduces the adsorption of the lens by the suction cup 304, allowing the lens to be removed.

[0019] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A positioning and limiting device for cutting plastic lenses, comprising a base plate (1) and a lens holder (2), characterized in that: The top of the lens holder (2) is provided with multiple lens placement slots (201). A column is fixedly installed at the four corners of the lens holder (2), and the column is fixedly connected to the base plate (1). An adsorption limiting component (3) is fixedly installed on the top of the base plate (1). A positioning component (4) is provided above the lens holder (2). The positioning component (4) includes a mounting plate two (401), on which a center positioning component (402) and an edge positioning component (403) are provided. Multiple center positioning components (402) and edge positioning components (403) are provided. The center positioning component (402) corresponds one-to-one with the lens placement slot (201). The edge positioning components (403) are located at the four directions of the center positioning component (402). The center positioning component (402) is pressed against the center of the lens, and the edge positioning components (403) are blocked at the four edges of the lens. The bottom plate (1) is provided with a pressing rotating component (5) at its top, and the movable end of the pressing rotating component (5) is fixedly connected to the mounting plate (401).

2. The positioning and limiting device for cutting plastic lenses according to claim 1, characterized in that: The adsorption limiting component (3) includes a mounting frame (301), an air chamber (302) is fixedly installed at the bottom of the mounting frame (301), a connecting pipe (303) is connected to the top of the air chamber (302), the connecting pipe (303) passes through the mounting frame (301), a suction cup (304) is connected to the top of the connecting pipe (303), multiple connecting pipes (303) are provided, and each corresponds to a lens placement slot (201). The front and back of the air chamber (302) are connected to a ventilation pipe (305), a solenoid valve is provided at the connection between the ventilation pipe (305) and the air chamber (302), and the ventilation pipe (305) is connected to the workshop negative pressure pipeline.

3. The positioning and limiting device for cutting plastic lenses according to claim 1, characterized in that: The center positioning component (402) includes a fixed cylinder (4021), which is fixedly connected to the mounting plate (401). A spring (4022) is fixedly installed on the top inner wall of the fixed cylinder (4021). A sliding piece (4023) is fixedly installed at the bottom end of the spring (4022). The sliding piece (4023) is slidably disposed inside the fixed cylinder (4021). A sliding rod (4024) is fixedly installed at the bottom end of the sliding piece (4023). The bottom end of the sliding rod (4024) extends out from inside the fixed cylinder (4021), and the bottom end of the sliding rod (4024) is provided with an integrally formed round head (4025), which presses against the lens.

4. The positioning and limiting device for cutting plastic lenses according to claim 3, characterized in that: The edge positioning component (403) includes a conical head (4031), the top of which is fixedly mounted with a threaded rod (4032). The top of the threaded rod (4032) passes through the bottom of the mounting plate (401), and a nut is threaded onto the outer wall of the threaded rod (4032).

5. The positioning and limiting device for cutting plastic lenses according to claim 4, characterized in that: The top of the lens holder (2) is provided with a clearance groove, and the clearance groove corresponds one-to-one with the conical head (4031).

6. The positioning and limiting device for cutting plastic lenses according to claim 1, characterized in that: The pressing and rotating component (5) includes a cylinder (501), which is fixedly installed on the top of the base plate (1). A lifting plate (502) is fixedly installed on the telescopic end of the cylinder (501). A motor (503) is fixedly installed on the top of the lifting plate (502). A rotating shaft (504) is fixedly installed on the output end of the motor (503). A connecting plate (505) is fixedly installed on the top of the rotating shaft (504). A connecting rod (506) is fixedly installed at the bottom front end of the connecting plate (505). A connecting frame (507) is fixedly installed at the bottom end of the connecting rod (506). The four corners of the connecting frame (507) are fixedly connected to the four corners of the mounting plate (401).

7. The positioning and limiting device for cutting plastic lenses according to claim 6, characterized in that: A guide ring (6) is fixedly installed on the inner wall of the lifting plate (502), and a guide rod (7) is inserted inside the guide ring (6). The bottom end of the guide rod (7) is fixedly connected to the top of the base plate (1).

8. The positioning and limiting device for cutting plastic lenses according to claim 1, characterized in that: The bottom of the base plate (1) is fixedly installed with an installation component (8). The installation component (8) includes a U-shaped plate (801). The U-shaped plate (801) is fixedly installed at the bottom of the base plate (1). The top and bottom of the U-shaped plate (801) are provided with installation holes (802). An integrally formed extension plate (803) is provided on the side of the U-shaped plate (801). A roller (804) is provided on the extension plate (803).

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