Fixing frame grabbing device with spectacle lens elastic clamps

Abstract

The utility model provides a fixed frame gripping device with a spectacle lens elastic clamp, which is used for gripping a fixed frame, the fixed frame is provided with a horizontally arranged cross rod and a vertically arranged vertical rod, and the upper end of the vertical rod is fixedly connected with the lower end of the cross rod; the upper end of the grabbing plate is fixedly connected with the driving end of a manipulator; a first pneumatic finger and a second pneumatic finger are arranged on the grabbing plate; the driving end of the first pneumatic finger is provided with a first clamping block and a second clamping block. When the first clamping block and the second clamping block are closed, a U-shaped limiting groove with an upward opening is formed, and the transverse rod is inserted into the limiting groove. The driving end of the second pneumatic finger oppositely clamps the vertical rod; the clamping direction of the driving end of the first pneumatic finger is perpendicular to the clamping direction of the driving end of the second pneumatic finger. Under the common limiting effect of the first pneumatic finger and the second pneumatic finger, the movable space of the fixing frame in the horizontal direction is eliminated, the position of the fixing frame is kept stable, and displacement is avoided.

Description

Technical Field

[0001] This utility model relates to the technical field of spectacle lens transfer devices, specifically a fixed frame gripping device with an elastic clip for spectacle lenses. Background Technology

[0002] In the field of eyeglass lens manufacturing, in order to achieve mass production of eyeglass lenses, the lenses are usually first clamped onto a fixed frame, and then a robotic arm is used to grasp the fixed frame to carry out subsequent processing operations.

[0003] Since spectacle lenses typically require a coating to enhance their performance, the fixing points must be located on the side of the lens to avoid damage to the coating during the fixing process. Currently, there are reinforced spring clips for automotive lenses, such as the one disclosed in Chinese patent CN202922454U. These spring clips ensure that the coating on the lens surface is not obstructed when fixing the lens, thus effectively protecting the integrity of the coating.

[0004] However, these spring clips suffer from low strength when gripping eyeglass lenses. Due to insufficient gripping strength, extremely high stability is required for the fixing frame during the transfer process. It is crucial to ensure that the fixing frame does not shift at all during the entire transfer; otherwise, it may affect the processing quality of the eyeglass lenses or even cause damage. Therefore, improving the stability of the fixing frame during the transfer process has become a pressing technical problem to be solved in the mass production of eyeglass lenses. Utility Model Content

[0005] To address the technical problems in the background art, this utility model discloses a fixed frame gripping device with an elastic clip for eyeglass lenses.

[0006] This utility model provides a fixed frame gripping device with an elastic clip for eyeglass lenses, used to grip a fixed frame. The fixed frame is provided with a horizontally arranged crossbar and a vertically arranged vertical bar, the upper end of the vertical bar being fixedly connected to the lower end of the crossbar; it includes a gripping plate, the upper end of which is fixedly connected to the drive end of a robotic arm.

[0007] The gripper is equipped with a first pneumatic finger and a second pneumatic finger;

[0008] The first pneumatic finger is equipped with a first clamping block and a second clamping block at its drive end.

[0009] When the first and second clamping blocks are closed, they form a U-shaped, upward-opening limiting groove, and the crossbar is inserted into the limiting groove.

[0010] The driving end of the second pneumatic finger clamps the vertical rod;

[0011] The gripping direction of the first pneumatic finger drive end is perpendicular to the gripping direction of the second pneumatic finger drive end.

[0012] The beneficial effects of the above settings are: 1. Under the combined restriction of the first and second pneumatic fingers, the fixed frame eliminates the space for horizontal movement, keeping its position stable and preventing it from shifting; 2. The setting of the limiting groove also provides support for the fixed frame, further improving the transfer stability of the fixed frame.

[0013] Due to positional errors, the robotic arm may slip when it grasps the fixed frame, causing a vertical relative displacement between the fixed frame and the gripping plate. After this displacement ends, the gripping device will collide with the fixed frame, causing the lens to fall off. Based on this, a further improvement is made: the driving end of the second pneumatic finger abuts against the lower end of the crossbar.

[0014] If the movement of the first pneumatic finger drive end is rotation, it is easy for the limiting groove to be difficult to accurately engage the crossbar. Based on this, a further improvement is made: the first pneumatic finger is a thin pneumatic finger, and its drive end moves linearly in the opposite direction.

[0015] If the crossbar is supported only at the joint of the first and second clamping blocks, instability can easily occur. Therefore, a further improvement is made: a support block protruding towards the second clamping block is provided at the lower end of the first clamping block; the support block extends to the lower end of the second clamping block. With this configuration, only the first clamping block supports the crossbar, resulting in higher stability compared to when both the first and second clamping blocks support the crossbar simultaneously.

[0016] The first clamping block extends below the second clamping block, requiring an increase in the height of the first clamping block, which leads to increased material usage and higher costs. Therefore, a further improvement is made: a notch is provided at the lower end of the second clamping block near the first clamping block; a support block engages with the notch; a limiting groove is formed between the first clamping block, the second clamping block, and the support block. Specifically, the notch forms a vertically connected vertical end face and a horizontal end face; the vertical end face is arranged vertically, and the horizontal end face is arranged horizontally; the length of the support block is greater than the length of the horizontal end face.

[0017] The positions of the first and second pneumatic fingers directly affect the uniformity of force on the fixed frame, thus affecting the stability of the fixed frame transfer process. Based on this, a further improvement is made: two symmetrically arranged first pneumatic fingers and one second pneumatic finger are provided on each of the opposite sides of the fixed frame; the second pneumatic finger is located in the middle of its two adjacent first pneumatic fingers.

[0018] If the vertical and horizontal bars of the pneumatic gripper are connected, the three stress points on one side of the fixed frame will be on the same straight line, affecting the stability of the fixed frame. Therefore, a further improvement is made: two spaced, parallel horizontal bars are provided on each opposite side of the fixed frame; the vertical bars are connected to the horizontal bars at the edges; and the first pneumatic finger grips the inner horizontal bar. With this arrangement, the three stress points on one side of the fixed frame form a triangle, resulting in greater stability after the robotic arm grips the fixed frame. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a structural schematic diagram of the present invention, in which a spectacle lens is mounted on the fixed frame;

[0021] Figure 2 This is a structural schematic diagram of the hidden gripping plate of this utility model, wherein a spectacle lens is mounted on the fixing frame;

[0022] Figure 3 This is a structural schematic diagram of the hidden gripping plate of this utility model, in which the fixing frame is not fitted with eyeglass lenses;

[0023] Figure 4 This is a schematic diagram of the structure of the first pneumatic finger;

[0024] In the diagram: 1. Fixed frame; 2. First pneumatic finger; 3. Second pneumatic finger; 4. First clamping block; 5. Second clamping block; 6. Limiting groove; 7. Support block; 8. Notch; 9. Gripping plate; 81. Vertical end face; 82. Horizontal end face; 11. Horizontal bar; 12. Vertical bar. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0026] like Figure 1-3 As shown, this utility model discloses a fixed frame gripping device with an elastic clip for eyeglass lenses, used to grip a fixed frame 1. Two horizontally arranged crossbars 11 are provided at opposite ends of the upper end of the fixed frame 1, and the lower end of the outer crossbar 11 is connected to a vertically arranged vertical bar 12.

[0027] This embodiment includes a horizontally arranged gripping plate 9, the upper end of which is fixedly connected to the drive end of a robotic arm. Four first pneumatic fingers 2 and two second pneumatic fingers 3 are mounted on the upper end of the gripping plate 9. The positions of the first pneumatic fingers 2 form a rectangle, with two symmetrically arranged at one end near the fixed frame 1 with a crossbar 11, and the remaining two symmetrically arranged at the other end near the fixed frame 1 with a crossbar 11. The second pneumatic fingers 3 are also respectively arranged at both ends of the fixed frame 1 with a crossbar 11. For the first pneumatic fingers 2 and the second pneumatic fingers 3 located at the ends of the fixed frame 1 with a crossbar 11, the second pneumatic fingers 3 are located at the center position between the first pneumatic fingers 2.

[0028] The first pneumatic finger 2 is a thin pneumatic finger, and its driving end moves linearly in the opposite direction. For example... Figure 4 As shown, the driving end of the first pneumatic finger 2 is respectively equipped with a first clamping block 4 and a second clamping block 5. A support block 7 protruding towards the second clamping block 5 is provided at the lower end of the first clamping block 4. A notch 8 is provided at the lower end of the second clamping block 5 on the side closest to the first clamping block 4; the notch 8 forms a vertically connected vertical end face 81 and a horizontal end face 82; the vertical end face 81 is vertically arranged, and the horizontal end face 82 is horizontally arranged; the length of the support block 7 is greater than the length of the horizontal end face 82. When the first pneumatic finger 2 retracts, the support block 7 engages within the notch 8, and the outer end of the support block 7 abuts against the vertical end face 81. The notch 8 allows the height of the first clamping block 4 to be designed to be the same as that of the second clamping block 5, thus reducing material usage and lowering costs. The first clamping block 4, the second clamping block 5, and the support block 7 form a U-shaped, upward-opening limiting groove 6, with an internal crossbar 11 passing through and engaging within the limiting groove 6. Furthermore, the linear movement of the drive end of the first pneumatic finger 2 allows the limiting groove 6 to accurately engage with the crossbar 11.

[0029] The driving end of the second pneumatic finger 3 rotates in the opposite direction to clamp or release the vertical rod 12. Since the clamping point of the second pneumatic finger 3 on one side and the clamping point of the first pneumatic finger 2 form a triangle in the vertical projection, the position of the fixed frame 1 is more stable after clamping and fixing.

[0030] The first pneumatic finger 2 provides lateral restraint to the fixed frame 1 in the horizontal direction, and the second pneumatic finger 3 provides longitudinal restraint to the fixed frame 1 in the horizontal direction. The lateral and longitudinal directions are perpendicular, thus restricting the fixed frame 1 in the horizontal direction and preventing it from shifting. The support block 7 supports the fixed frame 1, allowing for stable transfer. Furthermore, the structural design of the support block 7 ensures that the fixed frame 1 is supported only by the support block 7, preventing issues arising from simultaneous support by the first clamping block 4 and the second clamping block 5, which could lead to synchronicity errors and difficulty in gripping the fixed frame 1.

[0031] When the second pneumatic finger 3 clamps the vertical bar 12, its driving end also abuts against the lower end of the horizontal bar 11 connected to the vertical bar 12. This can prevent the relative vertical displacement from occurring at the moment the gripping plate 9 grips the fixed frame 1. After this movement ends, an impact will occur between the gripping plate 9 and the fixed frame 1, causing the lens to fall off.

[0032] The advantages of this embodiment are: 1. Under the combined restriction of the first pneumatic finger 2 and the second pneumatic finger 3, the fixed frame 1 eliminates the space in which the fixed frame 1 can move in the horizontal direction, so that its position remains stable and will not move; 2. The setting of the limiting groove 6 also provides support for the fixed frame 1, further improving the transfer stability of the fixed frame 1.

[0033] 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 fixed frame gripping device with elastic clips of eyeglass lenses, for gripping a fixed frame (1) provided with a horizontally arranged crossbar (11) and a vertically arranged vertical bar (12), the upper end of the vertical bar (12) being fixedly connected with the lower end of the crossbar (11); characterized in that: Includes a gripping plate (9), the upper end of which is fixedly connected to the drive end of the robotic arm; The gripping plate (9) is provided with a first pneumatic finger (2) and a second pneumatic finger (3); The first pneumatic finger (2) is equipped with a first clamping block (4) and a second clamping block (5) at its driving end. When the first clamping block (4) and the second clamping block (5) are closed, they form a U-shaped, upward-opening limiting groove (6), and the crossbar (11) is inserted into the limiting groove (6). The driving end of the second pneumatic finger (3) clamps the vertical rod (12); The gripping direction of the driving end of the first pneumatic finger (2) is perpendicular to the gripping direction of the driving end of the second pneumatic finger (3).

2. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 1, characterized in that: The driving end of the second pneumatic finger (3) abuts against the lower end of the crossbar (11).

3. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 1, characterized in that: The first pneumatic finger (2) is a thin pneumatic finger, and its driving end moves linearly in the opposite direction.

4. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 3, characterized in that: The lower end of the first clamping block (4) is provided with a support block (7) that protrudes toward the second clamping block (5); The support block (7) extends to the lower end of the second clamping block (5).

5. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 4, characterized in that: The second clamping block (5) has a notch (8) at its lower end on the side near the first clamping block (4); The support block (7) is engaged with the notch (8); The first clamping block (4), the second clamping block (5), and the support block (7) form a limiting groove (6).

6. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 5, characterized in that: The notch (8) forms a vertically connected vertical end face (81) and a horizontal end face (82); The vertical end face (81) is arranged vertically, and the horizontal end face (82) is arranged horizontally; The length of the support block (7) is greater than the length of the transverse end face (82).

7. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 1, characterized in that: The fixed frame (1) has two symmetrically arranged first pneumatic fingers (2) and a second pneumatic finger (3) on each of its opposite sides; The second pneumatic finger (3) is located in the middle of its two adjacent first pneumatic fingers (2).

8. The fixed frame gripping device with elastic clips of spectacle lenses according to claim 7, characterized in that: Two horizontal bars (11) are provided on each side of the fixed frame (1) at intervals and arranged side by side; The vertical rod (12) is connected to the horizontal rod (11) at the edge; The first pneumatic finger (2) clamps the crossbar (11) on the inside.

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