Clamp for optical lens

Abstract

The utility model provides a fixture for optical lenses, which comprises a base plate, two fork arms are symmetrically arranged on the base plate, a moving mechanism is fixedly mounted on the fork arms, the moving mechanism is in driving connection with a moving table, a support plate and a servo motor are fixedly mounted on the moving table, and a first roll shaft and a second roll shaft are movably mounted on the support plate. A conveying belt is fixedly connected between the first roller shaft and the second roller shaft, and the servo motor is in driving connection with the first roller shaft through a belt. During operation, the moving mechanism is started, the moving tables get close to each other, the two conveying belts clamp the stacked lenses, when the lenses need to be separated one by one, the servo motor is started, the conveying belts move, the stacked lenses move downwards by one lens body position, the bottommost stacked lenses are released, and lens separation is started. The working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of lens processing technology, and specifically relates to a clamp for optical lenses. Background Technology

[0002] Optical lenses are made from a specific formula of high-purity oxides of silicon, boron, sodium, potassium, zinc, lead, magnesium, calcium, and barium. The manufacturing process involves melting the mixture at high temperature in a platinum crucible and then homogenizing it using ultrasound to remove air bubbles; followed by a long, precisely controlled, slow cooling process. The resulting glass preform, after cooling and solidification, needs to be held in place using specialized clamps during subsequent optical processing. However, existing clamping devices cannot separate multiple optical lenses individually, requiring manual separation, which is very time-consuming and labor-intensive.

[0003] Chinese utility model patent CN222430540U discloses a field of optical lens processing technology, specifically an optical lens clamp, including a main board. Sliding sleeves are fitted at both ends of the main board. A side plate is welded to one side of each sliding sleeve. A clamping assembly is provided on one side of each side plate. The clamping assembly includes a cylinder mounted on one side of the side plate via a mounting bracket. The output shaft of the cylinder, located on the other side of the side plate, is fixed to a clamping ring by bolts. A pressure-fixing assembly is provided on the top of the main board, including a structural frame welded to the top of the main board. Moving the sliding sleeves moves the side plates, facilitating adjustment of the spacing between the clamping rings, thereby clamping optical lenses of different diameters. Rotating the adjusting screw causes a rubber pressure plate at its bottom to press against the stacked optical lenses, pressing them tightly when the clamping rings clamp them. However, it cannot separate the lenses individually. Utility Model Content

[0004] The purpose of this invention is to provide a clamp for optical lenses to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a clamp for optical lenses, comprising a base plate, the base plate having two forked arms symmetrically arranged, a moving mechanism fixedly mounted on the forked arms, a moving platform driven by the moving mechanism, a support plate and a servo motor fixedly mounted on the moving platform, a first roller and a second roller movably mounted on the support plate, a conveyor belt fixedly connected between the first roller and the second roller, and the servo motor being driven by the belt to connect to the first roller.

[0006] Preferably, both the first roller and the second roller are provided with gear structures, and the conveyor belt is provided with chain teeth, and the gear structures are meshed with the chain teeth.

[0007] Preferably, the conveyor belt is made of polyvinyl chloride and has anti-slip ribs.

[0008] Preferably, the substrate is provided with reinforcing ribs and mounting ears.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] The substrate of this invention is symmetrically provided with two fork arms. The fork arms are fixedly mounted with a moving mechanism for driving the moving platform to move. The moving platform is fixedly mounted with a support plate and a servo motor. The support plate is movably mounted with a first roller and a second roller. A conveyor belt is fixedly connected between the first roller and the second roller. The servo motor drives the first roller via a belt, thereby driving the conveyor belt to move. During operation, the moving mechanism is activated to bring the moving platforms closer together, causing the two conveyor belts to clamp the stacked lenses. When it is necessary to separate the lenses one by one, the servo motor is activated to move the conveyor belt, causing the stacked lenses to move down one lens position, releasing the bottom lens of the stack, and starting the lens separation process, thus improving work efficiency. Attached Figure Description

[0011] Figure 1 This is a structural view of the present invention.

[0012] Figure 2 This is an exploded structural view of the mobile platform of this utility model.

[0013] Figure 3 This is a cross-sectional structural view of the conveyor belt of this utility model.

[0014] The diagram is labeled as follows: 1. Base plate; 2. Fork arm; 3. Moving mechanism; 4. Moving table; 5. Support plate; 6. Servo motor; 7. First roller shaft; 8. Second roller shaft; 9. Conveyor belt; 10. Belt; 11. Gear structure; 12. Chain tooth; 13. Anti-slip rib; 14. Reinforcing rib; 15. Assembly ear. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Example 1:

[0017] like Figures 1-3As shown, the present invention provides a clamp for optical lenses, comprising a base plate 1. The base plate 1 has two symmetrically arranged fork arms 2. A moving mechanism 3 is fixedly mounted on each fork arm 2. The moving mechanism 3 is driven and connected to a moving stage 4. A support plate 5 and a servo motor 6 are fixedly mounted on the moving stage 4. A first roller shaft 7 and a second roller shaft 8 are movably mounted on the support plate 5. A conveyor belt 9 is fixedly connected between the first roller shaft 7 and the second roller shaft 8. The servo motor 6 is driven and connected to the first roller shaft 7 via a belt 10. Both the first roller shaft 7 and the second roller shaft 8 are provided with gear structures 11. The conveyor belt 9 is provided with chain teeth 12, and the gear structures 11 and chain teeth 12 are meshed together. The conveyor belt 9 is made of polyvinyl chloride and has anti-slip ribs 13. The base plate 1 is provided with reinforcing ribs 14 and mounting ears 15.

[0018] Through the above technical solution, the substrate 1 of this utility model is symmetrically provided with two fork arms 2. The fork arms 2 are fixedly installed with a moving mechanism 3 for driving the moving platform 4 to move. The moving platform 4 is fixedly installed with a support plate 5 and a servo motor 6. The support plate 5 is movably installed with a first roller shaft 7 and a second roller shaft 8. A conveyor belt 9 is fixedly connected between the first roller shaft 7 and the second roller shaft 8. The servo motor 6 drives the first roller shaft 7 through a belt 10, thereby driving the conveyor belt 9 to move. During operation, the moving mechanism 3 is activated to bring the moving platforms 4 closer together, so that the two conveyor belts 9 clamp the stacked lenses. When it is necessary to separate the lenses one by one, the servo motor 6 is activated to move the conveyor belt 9, so that the stacked lenses move down one lens position, releasing the bottom lens of the stack, and starting the lens separation, thus improving work efficiency.

[0019] Example 2:

[0020] like Figures 1-3 As shown, in this embodiment, the substrate 1 is symmetrically provided with two fork arms 2. A moving mechanism 3 is fixedly mounted on each fork arm 2. The moving mechanism 3 is driven and connected to a moving platform 4. A support plate 5 and a servo motor 6 are fixedly mounted on the moving platform 4. A first roller 7 and a second roller 8 are movably mounted on the support plate 5. A conveyor belt 9 is fixedly connected between the first roller 7 and the second roller 8. The servo motor 6 is driven and connected to the first roller 7 via a belt 10. The working principle of this fixture is that the moving mechanism 3 drives the moving platform 4 to move closer together, causing the two conveyor belts 9 to clamp the stacked lenses. When it is necessary to separate the lenses one by one, the servo motor 6 is activated to drive the conveyor belt 9 to move, causing the stacked lenses to move downwards by one lens position, releasing the bottom lens of the stack, thus achieving automatic lens separation.

[0021] In practical implementation, the base plate 1 serves as the supporting structure for the entire fixture, and its symmetrically arranged fork arms 2 provide the mounting base for the moving mechanism 3. The moving mechanism 3 can adopt a structure of linear guide rail and lead screw. The lead screw is driven by a motor to rotate, which in turn drives the moving table 4 to move along the linear guide rail. The moving direction of the moving table 4 is perpendicular to the stacking direction of the lenses, allowing the two moving tables 4 to move closer or further apart, thereby clamping or releasing the lenses. The support plate 5 fixedly installed on the moving table 4 provides the mounting position for the rollers. The first roller 7 and the second roller 8 are arranged in parallel, and the conveyor belt 9 is sleeved on the two rollers to form a closed-loop transmission structure. The servo motor 6 drives the first roller 7 to rotate through the belt 10, which in turn drives the conveyor belt 9 to move.

[0022] When stacked lenses need to be clamped, the moving mechanism 3 drives the two moving platforms 4 to move closer together, so that the conveyor belts 9 on both sides contact the lenses and apply appropriate clamping force. At this time, the conveyor belts 9 are stationary, and the lenses are firmly clamped between the two conveyor belts 9. When it is necessary to separate the lenses, the servo motor 6 starts, driving the first roller shaft 7 to rotate via the belt 10, which in turn drives the conveyor belts 9 to move. The direction of movement of the conveyor belts 9 is consistent with the stacking direction of the lenses, so that the stacked lenses move downward under the drive of the conveyor belts 9. Since the movement speed of the conveyor belts 9 is precisely controlled, each time only the lenses are moved a distance of one lens thickness, thereby releasing the bottom lens from the stack.

[0023] The conveyor belt 9 of the clamp can be made of a material with a certain degree of elasticity and friction, such as rubber or polyurethane, to ensure that the clamping force on the lens is moderate, which can firmly clamp the lens without damaging the lens surface. The speed and direction of the servo motor 6 can be precisely adjusted by the control system to adapt to the separation requirements of lenses of different thicknesses. The moving distance of the moving mechanism 3 can also be set by the control system to ensure that the conveyor belt 9 can effectively clamp lenses of different diameters.

[0024] In practical applications, this fixture can be used in conjunction with automated production lines to achieve automatic loading and separation of optical lenses. By installing the fixture in an appropriate position and cooperating with a lens conveying device, continuous separation and conveying of lenses can be achieved. The control system can precisely control the moving distance of the moving mechanism 3 and the operating parameters of the servo motor 6 according to production needs, ensuring the accuracy and reliability of lens separation. The structural design of this fixture allows it to adapt to the processing requirements of optical lenses of different specifications while maintaining high working efficiency, exhibiting good versatility and practicality.

[0025] Example 3:

[0026] like Figures 1-3As shown, in this embodiment, both the first roller shaft 7 and the second roller shaft 8 are equipped with gear structures 11, and the conveyor belt 9 is equipped with chain teeth 12. The gear structures 11 and chain teeth 12 are meshed together. The working principle of this embodiment is as follows: When the servo motor 6 drives the first roller shaft 7 to rotate via the belt 10, the gear structure 11 on the first roller shaft 7 meshes with the chain teeth 12 of the conveyor belt 9, thus precisely driving the conveyor belt 9 to move. At the same time, the gear structure 11 on the second roller shaft 8 also maintains meshing with the chain teeth 12 of the conveyor belt 9, ensuring that the movement of the conveyor belt 9 between the two roller shafts is smooth and synchronous. Compared with traditional friction transmission, this gear and chain tooth meshing method has higher transmission accuracy and reliability.

[0027] In practice, the servo motor 6 precisely controls the rotation angle of the first roller shaft 7, thereby accurately controlling the movement distance of the conveyor belt 9. Since there is no slippage in the meshing transmission between the gears and chain teeth 12, the displacement of the conveyor belt 9 maintains a strict correspondence with the output of the servo motor 6. When a lens needs to be released, the servo motor 6 only needs to rotate a specific angle according to a preset program to move the conveyor belt 9 precisely a distance equal to the thickness of one lens, ensuring that only the bottommost lens is released each time.

[0028] In this embodiment, the meshing design of the gear structure 11 and the chain teeth 12 also has good load-bearing capacity. Even when clamping a large number of lenses, the meshing of the gear and chain teeth 12 can still maintain stable transmission performance, and the transmission accuracy will not be affected by the increase in load. At the same time, this meshing method also avoids the problem of belt 10 slippage or wear that may occur in traditional friction transmission, thus improving the service life of the equipment.

[0029] In practical applications, the servo motor 6, through a control system, can achieve precise programmed control of the movement of the conveyor belt 9. Operators can pre-set the rotation parameters of the servo motor 6 according to the requirements of lenses with different thicknesses, ensuring that the distance the conveyor belt 9 moves each time is precisely matched to the lens thickness. This precise control ensures the reliability of the lens separation process and completely eliminates the need for manual intervention.

[0030] During the lens separation process, the smoothness of the conveyor belt 9's movement is crucial. This embodiment, through the meshing design of gears and chain teeth 12, completely eliminates any jumping or fluctuations during the movement of the conveyor belt 9, ensuring that the lens is not subjected to additional vibration or impact when released, thereby guaranteeing the processing quality of the lens.

[0031] Example 4:

[0032] like Figures 1-3As shown, the conveyor belt 9 in this embodiment is made of polyvinyl chloride (PVC), which has good flexibility and wear resistance, and can adapt to the working requirements of long-term continuous operation. The PVC conveyor belt 9 has anti-slip ribs 13 on its surface, which are evenly distributed along the length of the conveyor belt 9, forming regular raised textures. When the conveyor belt 9 clamps stacked optical lenses, the anti-slip ribs 13 make frictional contact with the lens surface, effectively preventing the lenses from sliding or shifting during transport.

[0033] The working principle of the anti-slip rib 13 lies in its special surface structure design. When the conveyor belt 9 clamps the lens, the raised part of the anti-slip rib 13 forms multi-point contact with the lens surface, increasing the coefficient of friction of the contact surface.

[0034] In the actual operation, when the servo motor 6 drives the first roller shaft 7 to rotate, it drives the PVC conveyor belt 9 to start operating. The anti-slip ribs 13 on the surface of the conveyor belt 9 generate sufficient static friction with the lens surface, ensuring that the lens can move synchronously with the conveyor belt 9 without slipping. This design is particularly suitable for optical lenses with smooth surfaces, because ordinary smooth conveyor belts 9 are unlikely to generate sufficient friction on the lens. The presence of the anti-slip ribs 13 ensures a stable clamping effect even in high humidity or in the presence of trace amounts of lubricant.

[0035] Another important function of the anti-slip ribs 13 is to prevent relative displacement between stacked lenses. When multiple lenses are stacked together and clamped, the anti-slip ribs 13 can generate friction with the contact surfaces of multiple lenses simultaneously, keeping the relative positions of the lenses fixed. This characteristic is crucial for subsequent lens-by-lens separation operations, because only by ensuring that the upper lens does not slide arbitrarily can the separation of only the bottom lens be accurately controlled each time.

[0036] In practical applications, when the moving mechanism 3 drives the two conveyor belts 9 to approach each other and clamp the lens stack, the PVC conveyor belts 9 will undergo appropriate elastic deformation to ensure full contact with the lens surface. At this time, the raised part of the anti-slip rib 13 first contacts the lens, forming an initial positioning reference. As the clamping force increases, the conveyor belts 9 deform further, and the contact area between the anti-slip rib 13 and the lens gradually increases, eventually forming a stable multi-point contact state. This gradual contact method avoids sudden impact forces and protects the surface of the delicate optical lenses.

[0037] During the lens separation stage, when the servo motor 6 drives the conveyor belt 9, the friction between the anti-slip ribs 13 and the lenses causes the entire lens stack to move downwards. When the bottom lens is released from the clamping area, the continuous friction of the anti-slip ribs 13 on the upper lenses ensures that only the bottom lens is released, while the upper lenses remain clamped.

[0038] Example 5:

[0039] like Figures 1-3 As shown, the substrate 1 in this embodiment is provided with reinforcing ribs 14 and mounting ears 15. The reinforcing ribs 14 are evenly distributed along the length of the substrate 1, forming a longitudinal rib structure, and are integrally formed with the substrate 1. The cross-sectional shape of the reinforcing ribs 14 is trapezoidal, with its top width being smaller than its bottom width. This design can effectively disperse the stress concentration phenomenon of the substrate 1 when carrying lenses. When the conveyor belt 9 clamps the stacked optical lenses, the weight of the lenses is transferred to the substrate 1 through the moving mechanism 3. The reinforcing ribs 14 significantly improve the bending stiffness of the substrate 1 by increasing the cross-sectional moment of inertia of the substrate 1, preventing the substrate 1 from deforming due to excessive weight of the stacked lenses.

[0040] Mounting ears 15 are symmetrically arranged at both ends of the base plate 1. Each mounting ear 15 has a set of mounting holes, which are countersunk holes to ensure the flatness of the mounting surface when tightening screws. The mounting ears 15 are welded to the side wall of the base plate 1. This structure allows the fixture to be quickly installed onto the end effector of a robot or the moving mechanism 3 of an automated production line via the mounting ears 15. During installation, the operator only needs to align the mounting holes of the mounting ears 15 with the threaded holes of the external equipment and tighten them with standard fasteners to complete the assembly, without the need for additional machining of the adapter structure.

[0041] When the fixture is used in an automated lens processing system, the robot arm moves the entire fixture to the lens stacking station by gripping the assembly lug 15. At this time, the reinforcing rib 14 can resist the inertial torque generated by the robot arm's accelerated movement, preventing the substrate 1 from twisting and vibrating. During the lens separation process, the clamping force applied to the lens by the conveyor belt 9 will generate a reverse force acting on the substrate 1. The reinforcing rib 14, through its rib structure, evenly transmits this force to the entire substrate 1, ensuring that the fixture maintains structural stability during dynamic operation.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0043] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A jig for optical lenses comprising a base plate provided with two prongs symmetrically, characterized in that, The fork arm is fixedly mounted with a moving mechanism, the moving mechanism is driven to connect to a moving platform, the moving platform is fixedly mounted with a support plate and a servo motor, the support plate is movably mounted with a first roller and a second roller, a conveyor belt is fixedly connected between the first roller and the second roller, and the servo motor is driven to connect to the first roller via the belt.

2. A clamp for optical lenses according to claim 1, characterized in that, Both the first roller and the second roller are equipped with gear structures, and the conveyor belt is equipped with chain teeth. The gear structures are meshed with the chain teeth.

3. The optical lens holder of claim 1, wherein, The conveyor belt is made of polyvinyl chloride and has anti-slip ribs.

4. The optical lens holder of claim 1, wherein, The substrate is provided with reinforcing ribs and mounting ears.

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