Double-clamp switching-free clamping device of lens feeding machine

Abstract

The utility model provides a double-clamp switching-free clamping device of a lens feeding machine. The double-clamp switching-free clamping device of the lens feeding machine comprises a fixing frame fixedly connected with the driving end of a mechanical arm. The fixing frame is provided with a suction cup and a clamping jaw which are driven by an air cylinder. When the piston rod of the cylinder ascends, the suckers are far away from the spectacle lenses, and the clamping jaws on the two sides of the lens frame draw close to each other while ascending to clamp the lens frame; when the piston rod of the air cylinder descends, the suction cups approach and suck the spectacle lenses, and the clamping jaws on the two sides of the lens frame expand and get away from the lens frame while descending. The suction cup and the clamping jaw are integrated on the same fixing frame and are uniformly driven by the air cylinder, so that simultaneous clamping and releasing of the spectacle lens and the lens frame are achieved, clamp switching in a traditional mode is not needed, the operation time is remarkably shortened, and therefore the overall production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of lens processing equipment, specifically a dual-clamp lens loading machine clamping device that does not require switching. Background Technology

[0002] In the production and processing of eyeglass lenses, batch processing technology is commonly used. After one processing step is completed, multiple eyeglass lenses are placed in a lens frame, and then these lens frames containing the eyeglass lenses are stacked one on top of the other to save space and facilitate overall transportation to the next processing station.

[0003] The robotic arm at the next workstation typically requires two independent grippers: one for gripping the lenses and the other for gripping the frames. In practice, these two grippers need to be switched according to different operational requirements to ensure both the safe and efficient removal of the lenses and the reliable handling of the frames. However, the gripper switching process not only increases the complexity of the operation, but more importantly, the time required for switching directly leads to a decrease in overall production efficiency, becoming a key factor restricting the acceleration of the production process. Utility Model Content

[0004] To address the technical problems in the background art, this utility model discloses a dual-clamp lens loading machine clamping device that does not require switching.

[0005] This utility model provides a dual-clamp lens loading machine clamping device for clamping lens frames and spectacle lenses inside the lens frames, including a fixing frame fixedly connected to the drive end of a robot arm;

[0006] The mounting bracket is equipped with a suction cup and gripper driven by a cylinder;

[0007] When the piston rod of the cylinder rises, the suction cup moves away from the lens, and the grippers on both sides of the lens frame rise and move closer together to grip the lens frame.

[0008] As the piston rod of the cylinder descends, the suction cup approaches and adheres to the lens, while the grippers on both sides of the lens frame open as they descend, moving away from the lens frame.

[0009] The beneficial effects of the above-mentioned design are as follows: 1. By integrating the suction cup and gripper onto the same fixed frame and driving them uniformly with a cylinder, this application achieves simultaneous gripping and releasing of the lens and lens frame, eliminating the need for clamp switching in traditional methods, significantly shortening operation time, and thus improving overall production efficiency; 2. Due to the adoption of a dual-clamp, switch-free design, operators do not need to frequently change clamps between the lens and lens frame, thereby simplifying the operation process, reducing operational complexity, and also reducing operational errors that may be caused by improper clamp switching; 3. When the suction cup adsorbs the lens, the gripper can be lowered first to grip the lens frame, and then released again without moving the lens frame. This allows for correction of the lens frame's position, enabling the suction cup to accurately adsorb the lens.

[0010] The specific structure of the cylinder-driven suction cup and gripper is as follows: a lifting frame is fixedly connected to the cylinder piston rod below the fixed frame; the suction cup is installed on the lifting frame; the gripper is arranged in an L-shape with an incline, and the openings formed by the grippers on both sides of the lens frame are opposite each other; the lower end of the gripper is used to grip the lens frame; the upper end of the gripper is hinged to both ends of the lifting frame; the corner of the gripper is hinged to both ends of the fixed frame through a connecting rod.

[0011] The lifting stability of the lifting frame directly affects the stability of the gripper holding the lens frame. Based on this, further improvements are made by installing vertically arranged guide rods on the lifting frame and installing guide sleeves that connect to the guide rods on the fixed frame.

[0012] The contact area between the gripper and the lens frame directly affects the stability of the gripper in holding the lens frame. Based on this, a further improvement is made by: providing a hinged clamping block at the lower end of the gripper; when the gripper holds the lens frame, the inner side of the clamping block is in contact with the outer side of the lens frame.

[0013] When gripping a lens frame, the clamping block usually needs to be manually rotated, which is too cumbersome. Therefore, a further improvement is made: when the clamping block detaches from the lens frame, it is tilted; in vertical projection, the outer edge of the lens frame is located inside the hinge point of the clamping block. With this design, before the gripper grasps the lens frame, the upper edge of the outer side of the lens frame will first contact the lower end face of the clamping block; as the gripper continues to descend, it will automatically rotate to a state of contact with the outer side of the lens frame, thus clamping the lens frame, due to the obstruction of the upper edge of the outer side of the lens frame.

[0014] To ensure that the clamping block remains stably tilted, a further design feature is that a spring connects the opening and closing end of the clamping block to the gripper; when the spring is free, the clamping block is tilted.

[0015] To prevent the spring from colliding with the lens frame, a further design feature is that the spring is located on the outside of the gripper.

[0016] The connection position between the connecting rod and the gripper directly affects the uniformity of force on the gripper and the stability of the gripper in grasping the lens frame. Based on this, a further improvement is made: a through groove is opened at the center of the gripper along its length, and one end of the connecting rod is inserted into the through groove.

[0017] The beneficial effects of this utility model are:

[0018] This utility model discloses a dual-clamp lens loading machine clamping device that eliminates the need for switching. By synchronously driving the suction cup and gripper with a cylinder, the suction cup and gripper alternately adsorb lenses and grasp lens frames, achieving the following advantages: 1. By integrating the suction cup and gripper onto the same fixed frame and driving them uniformly with a cylinder, this application achieves simultaneous gripping and releasing of lenses and lens frames, eliminating the need for clamp switching as in traditional methods, significantly shortening operation time and improving overall production efficiency; 2. Due to the dual-clamp, switch-free design, operators do not need to frequently change clamps between lenses and lens frames, simplifying the operation process, reducing operational complexity, and minimizing operational errors caused by improper clamp switching; 3. When the suction cup adsorbs the lens, the gripper can be lowered to grasp the lens frame first, and then released again without moving the lens frame. This allows for correction of the lens frame's position, ensuring the suction cup accurately adsorbs the lens.

[0019] This utility model discloses a dual-clamp lens loading machine clamping device that does not require switching. By setting a hinged clamping block at the lower end of the clamping jaws, the contact area between the clamping jaws and the lens frame is increased, making the clamping jaws grip the lens frame more stably.

[0020] This utility model discloses a dual-clamp lens loading machine clamping device that does not require switching. By setting the position of the clamping blocks, the clamping blocks can automatically rotate to fit against the outer side of the lens frame when the grippers grab the lens frame, resulting in higher gripping quality and effect. Attached Figure Description

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

[0022] Figure 1 This is a schematic diagram of the structure of this utility model, in which the gripper is in a closed gripping state of the lens frame;

[0023] Figure 2 This is a structural schematic diagram from another perspective of the present invention, in which the gripper is in a closed gripping state of the lens frame;

[0024] Figure 3 This is the front view of the present invention, in which the gripper is in a closed gripping state of the lens frame;

[0025] Figure 4is a schematic structural view of the present utility model, where the clamping jaws are in an open state and away from the lens frame;

[0026] Figure 5 is the front view of the present utility model, where the clamping jaws are in an open state and away from the lens frame;

[0027] Figure 6 is the front view of the present utility model, where the clamping block is just in contact with the lens frame;

[0028] In the figure: 1, fixed frame; 2, cylinder; 3, suction cup; 4, clamping jaw; 5, lens frame; 6, lifting frame; 7, connecting rod; 8, guide rod; 9, guide sleeve; 10, clamping block; 11, spring; 12, through slot. Detailed implementation manners

[0029] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only showing the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0030] As Figure 1 shown, the present utility model discloses a clamping device for a lens loading machine with double clamps without switching, including a fixed frame 1 and a lifting frame 6. At the top of the fixed frame 1, there is a connecting seat in a "U" shape with an opening facing downwards, and the connecting seat is fixedly connected to the driving end of the manipulator.

[0031] [[ID=2^]]Inside the connecting seat, there is a cylinder 2 fixedly connected to the fixed frame 1, and its driving end faces downwards. The lifting frame 6 is located below the fixed frame 1, and its upper end is fixedly connected to the driving end of the cylinder 2. A vertically arranged guide rod 8 is installed on the lifting frame 6; a guide sleeve 9 sleeving the guide rod 8 is installed on the fixed frame 1. The guide rod 8 and the guide sleeve 9 are used for guiding the lifting of the lifting frame 6 to improve the stability of its lifting.

[0032] A plurality of suction cups 3 are installed on the lifting frame 6 for adsorbing the spectacle lenses on the lens frame 5. Clamping jaws 4 are hinged at both ends of the lifting frame 6. The clamping jaws 4 are arranged in an inclined L shape, and the openings formed by the clamping jaws 4 on both sides of the lens frame 5 are opposite; the lower ends of the clamping jaws 4 are used for clamping the lens frame 5; the upper ends of the clamping jaws 4 are hinged to both ends of the lifting frame 6; the corners of the clamping jaws 4 are hinged to both ends of the fixed frame 1 through connecting rods 7.

[0033] With the above settings, when the piston rod of the cylinder 2 rises, as Figure 1-3 shown, the suction cups 3 are away from the spectacle lenses, and while the clamping jaws 4 on both sides of the lens frame 5 rise, they approach each other to clamp the lens frame 5; as Figure 4 and Figure 5 shown, when the piston rod of the cylinder 2 descends, the suction cups 3 approach and adsorb the spectacle lenses, and while the clamping jaws 4 on both sides of the lens frame 5 descend, they open and are away from the lens frame 5.

[0034] The lower end of the gripper 4 is provided with a hinged clamping block 10; when the gripper 4 grips the lens frame 5, the inner side of the clamping block 10 is in contact with the outer side of the lens frame 5. When the clamping block 10 is detached from the lens frame 5, it is in an inclined state; for example... Figure 6 As shown in the vertical projection, the outer edge of the lens frame 5 is located inside the hinge point of the clamping block 10. With this configuration, before the gripper 4 clamps the lens frame 5, the upper edge of the outer side of the lens frame 5 will first contact the lower end face of the clamping block 10; as the gripper 4 continues to descend, the gripper 4 will automatically rotate to a state of contact with the outer side of the lens frame 5 under the obstruction of the upper edge of the outer side of the lens frame 5, and clamp the lens frame 5.

[0035] A spring 11 is connected between the opening and closing end of the clamping block 10 and the gripper 4. When the spring 11 is in a free state, the clamping block 10 is tilted, which keeps the position of the clamping block 10 stable and eliminates the need for manual rotation of the clamping block 10. The spring 11 is located on the outside of the gripper 4 to prevent the spring 11 from colliding with the lens frame 5.

[0036] A through slot 12 is provided at the center of the gripper 4 along its length, and one end of the connecting rod 7 is inserted into the through slot 12. With this arrangement, the gripper 4 is subjected to balanced force, making its opening and closing more stable.

[0037] Compared with the prior art, the advantages of this embodiment are: 1. This application integrates the suction cup 3 and the gripper 4 on the same fixed frame 1 and is uniformly driven by the cylinder 2, realizing the simultaneous gripping and release of the lens and the lens frame 5 without the need for clamp switching in the traditional method, which significantly shortens the operation time and improves the overall production efficiency; 2. Due to the adoption of the dual clamp switching-free design, the operator does not need to frequently change the clamp between the lens and the lens frame 5, which simplifies the operation process, reduces the operation complexity, and also reduces the operation errors that may be caused by improper clamp switching; 3. When the suction cup 3 adsorbs the lens, the gripper 4 can be lowered first to grip the lens frame 5, and then released again without moving the lens frame 5. In this way, the position of the lens frame 5 can be corrected, so that the suction cup 3 can accurately adsorb the lens.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A double-gripper switch-free lens loading machine gripping device for gripping a spectacle frame (5) and an ophthalmic lens within said spectacle frame (5), characterized in that: The fixed frame (1) is fixedly connected with the driving end of the manipulator; The fixed frame (1) is provided with a suction cup (3) and a clamping jaw (4) driven by a gas cylinder (2); When the piston rod of the gas cylinder (2) rises, the suction cup (3) moves away from the spectacle lens, and the clamping jaws (4) on both sides of the lens frame (5) move close to each other while rising to clamp the lens frame (5); When the piston rod of the gas cylinder (2) descends, the suction cup (3) moves close to and adsorbs the spectacle lens, and the clamping jaws (4) on both sides of the lens frame (5) open while descending to move away from the lens frame (5).

2. The dual gripper changeless lens loading machine gripper device of claim 1, wherein: The fixed frame (1) is provided below with a lifting frame (6) fixedly connected with the piston rod of the gas cylinder (2); The suction cup (3) is installed on the lifting frame (6); The clamping jaws (4) are L-shaped and arranged obliquely, and the openings formed by the clamping jaws (4) on both sides of the lens frame (5) are opposite; The lower end of the clamping jaw (4) is used to clamp the lens frame (5); The upper end of the clamping jaw (4) is hinged to both ends of the lifting frame (6); The corners of the clamping jaw (4) are hinged to both ends of the fixed frame (1) through connecting rods (7).

3. The dual gripper changeless lens loading machine gripper device of claim 2, wherein: A vertically arranged guide rod (8) is installed on the lifting frame (6); A guide sleeve (9) sleeving the guide rod (8) is installed on the fixed frame (1).

4. The dual gripper changeless lens loading machine gripper device of claim 2, wherein: The lower end of the clamping jaw (4) is provided with a hinged clamping block (10); When the clamping jaw (4) clamps the lens frame (5), the inner side surface of the clamping block (10) is fitted with the outer side surface of the lens frame (5).

5. The dual gripper changeless lens loading machine gripper device of claim 4, wherein: When the clamping block (10) is separated from the lens frame (5), it is in an inclined state; In the vertical projection, the outer side edge of the lens frame (5) is located inside the hinge point of the clamping block (10).

6. The dual gripper changeless lens loading machine gripper device of claim 5, wherein: A spring (11) is connected between the opening end of the clamping block (10) and the clamping jaw (4); In the free state of the spring (11), the clamping block (10) is in an inclined state.

7. The dual gripper changeless lens loading machine gripper device of claim 6, wherein: The spring (11) is located outside the clamping jaw (4).

8. The dual gripper changeless lens loading machine gripper device of claim 2, wherein: A through groove (12) is formed in the center position of the clamping jaw (4) along its length direction, and one end of the connecting rod (7) is inserted into the through groove (12).

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