Glasses lens primary and secondary frame grabbing device

Abstract

The utility model provides a spectacle lens primary-secondary frame grabbing device which comprises a fixing frame installed at the driving end of a mechanical arm. The fixing frame is provided with a first clamping hook which is driven by a first air cylinder to linearly move to be close to or away from the sub-frame and used for being connected with a clamping hole in the sub-frame in a clamped mode. And the second clamping hook is hinged to the fixing frame, is driven by a second air cylinder to rotate, and is clamped with or separated from the cross rod on the mother frame. The auxiliary frame and main frame linkage grabbing and separating device has the advantages that linkage grabbing and separating operation of an auxiliary frame and a main frame can be completed through a single set of device, cost is reduced, the time for switching two sets of tools is saved, and therefore production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of spectacle lens production equipment, and in particular to spectacle lens transfer, specifically a spectacle lens and frame gripping device. Background Technology

[0002] In the field of automated eyeglass lens production, the batch transfer of lenses between different workstations is a key step in achieving efficient production. Current technologies typically employ a nested frame-and-subframe structure for lens transfer: the subframe carries multiple lenses, while the parent frame acts as the carrier for the subframes, enabling batch transport. In this process, a robotic arm must use gripping fixtures to perform the coordinated transfer and separation of the parent and subframes. However, existing technologies suffer from the following technical bottlenecks:

[0003] 1. Traditional processes use two independent robotic arms to assemble the sub-frame fixture and the mother frame fixture respectively, and complete the nested transfer of the sub-frame and mother frame through collaborative operation. Although this solution can ensure transfer efficiency, it requires the configuration of two complete fixture systems and control modules, which significantly increases the equipment investment cost. In addition, the workspace coordination of the two robotic arms is complicated, the site utilization rate is low, and it is not suitable for small and medium-sized production lines.

[0004] 2. To reduce costs, some improvement plans employ a single robotic arm to switch between sub-frame and mother-frame tooling via a quick-change device. However, practice shows that the tooling assembly and disassembly process requires multiple steps, such as aligning positioning pins and locking hydraulic / pneumatic joints, with each switch taking 30-60 seconds. Frequent switching not only disrupts production cycles but also increases the risk of wear and tear on the mechanical structure, resulting in insufficient long-term operational stability.

[0005] Therefore, how to overcome the above-mentioned defects has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] To address the technical problems in the background art, this utility model discloses a lens and frame gripping device.

[0007] This utility model provides a lens and frame gripping device, including a fixing frame, which is installed on the drive end of a robotic arm;

[0008] The mounting bracket is equipped with:

[0009] The first hook is driven by the first cylinder to move linearly, moving closer to or away from the sub-frame, and is used to engage the locking hole on the sub-frame.

[0010] The second hook is hinged to the fixed frame and rotated by the second cylinder to engage or disengage from the crossbar on the mother frame.

[0011] The beneficial effects of this utility model are: a single device can complete the linkage gripping and separation operation of the mother and child frames, which not only reduces costs, but also saves the time of switching between two sets of tooling, thereby improving production efficiency.

[0012] Traditionally, the first gripper is driven by a single cylinder, which is not only costly but also has low synchronization. Therefore, a further improvement is made by using a finger cylinder as the first cylinder and symmetrically mounting the first hooks on the outside of the driving end of the first cylinder.

[0013] The main frame is usually equipped with multiple sub-frames, so multiple first claws are also required. To improve the synchronicity of the movement of the first claws, a further design is to set multiple first hooks on the same side of the fixed frame and fix them on the same mounting plate; the mounting plate is fixedly connected to the drive end of the first cylinder through a connecting rod.

[0014] To improve the stability of the first hook-connector frame, the design is further as follows: the first hook is L-shaped and consists of a horizontal part and a vertical part; one end of the horizontal part is fixedly connected to the mounting plate; the lower end of the vertical part is fixedly connected to the other end of the horizontal part.

[0015] To ensure that the second hook can stably engage or disengage from the mother frame, the design further includes: the second hook consists of an arc-shaped hook and a rod connected to one end of the hook; the rod is hinged to the fixing frame, with the hook on one side of the hinge point and the other side hinged to the drive end of the second cylinder.

[0016] The structure of the subframe directly affects the positional stability of the lens. Based on this, a further improvement is made: the subframe is equipped with multiple limiting grooves, and the lens is snapped into the limiting grooves.

[0017] The structure of the limiting groove directly affects the resistance of the eyeglass lens snap-fit ​​and the molding cost of the limiting groove. Based on this, a further improvement is made: the limiting groove consists of two first snap-fit ​​grooves and one second snap-fit ​​groove; the openings of the first snap-fit ​​grooves are opposite each other; the second snap-fit ​​groove is located below the first snap-fit ​​grooves, with its opening facing upwards; in vertical projection, the first snap-fit ​​grooves are symmetrically arranged relative to the second snap-fit ​​groove. Its specific structure is as follows: the subframe includes two parallel, spaced-apart connecting plates, with snap-fit ​​holes set on the connecting plates; end plates are connected between the upper ends of the connecting plates, and multiple middle plates are set between the end plates; first snap-fit ​​grooves are set on the side of the end plates facing the middle plates and on both sides of the middle plates in the horizontal direction; a bottom plate is connected between the bottom ends of the connecting plates, and a second snap-fit ​​groove is set on the upper side of the bottom plate.

[0018] The beneficial effects of this utility model are: a single device can complete the linkage gripping and separation operation of the mother and child frames, which not only reduces costs, but also saves the time of switching between two sets of tooling, thereby improving production efficiency. 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 schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0022] Figure 3 This is a schematic diagram of the assembly structure of the sub-frame and the mother frame;

[0023] Figure 4 This is a structural diagram of the sub-frame;

[0024] In the diagram: 1. Fixing frame; 2. First hook; 3. First cylinder; 4. Subframe; 5. Clip hole; 6. Second hook; 7. Second cylinder; 8. Crossbar; 9. Mounting plate; 10. Connecting rod; 11. Mother frame; 21. Horizontal part; 22. Vertical part; 41. First slot; 42. Second slot; 43. Connecting plate; 44. End plate; 45. Middle plate; 46. Bottom plate; 61. Hook; 62. Rod. 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 and Figure 2 As shown, this utility model discloses a lens and frame gripping device, including a fixed frame 1, the upper end of which is fixedly connected to the drive end of a robotic arm.

[0027] The mounting bracket 1 is equipped with a first hook 2 and a second hook 6. The first hook 2 is used to engage the sub-frame 4, and the second hook 6 is used to engage the mother frame 11.

[0028] like Figure 4As shown, subframe 4 includes two parallel, spaced-apart connecting plates 43. Each connecting plate 43 has a locking hole 5 for engaging the first hook 2. End plates 44 are connected between the connecting plates 43 and on both sides near the top. Multiple spaced-apart middle plates 45 are arranged between the end plates 44. The end plates 44 and middle plates 45 are horizontally arranged and at the same height. First locking slots 41 are provided on the side of the end plate 44 facing the middle plate 45 and on both sides of the middle plate 45 in the horizontal direction. A vertically arranged bottom plate 46 is connected between the bottoms of the connecting plates 43. A second locking slot 42 is provided on the upper side of the bottom plate 46. In vertical projection, the bottom plate 46 is located at the center of two adjacent middle plates 45, or at the center of adjacent end plates 44 and middle plates 45. The two opposing first locking slots 41 and the corresponding second locking slots 42 form a limiting groove, in which the spectacle lens is engaged, achieving a limiting position. This design not only reduces the contact area between the limiting groove and the lens, thereby reducing the resistance of the lens insertion into the limiting groove, but also reduces the material consumption of the plate and lowers the cost.

[0029] like Figure 3 As shown, the mother frame 11 is a rectangular structure assembled from round steel bars, and has multiple cavities, each containing a sub-frame 4. Horizontally arranged crossbars 8 protrude upwards at both ends of the mother frame 11 along its length, for engaging the second hooks 6.

[0030] The specific installation structure of the first hook 2 is as follows: A first cylinder 3 (finger cylinder) is installed on the lower end face of the fixing frame 1. Symmetrically arranged, vertically arranged mounting plates 9 are provided on both sides of the long side of the fixing frame 1. Multiple first hooks 2 are installed on the mounting plates 9. The first hook 2 is L-shaped, consisting of a horizontal part 21 and a vertical part 22; one end of the horizontal part 21 is fixedly connected to the mounting plate 9; the lower end of the vertical part 22 is fixedly connected to the other end of the horizontal part 21. With this arrangement, the first cylinder 3 drives the first hook 2 to move linearly, and the first hooks 2 on both sides of the fixing frame 1 move in opposite directions, moving closer to or further away from the sub-frame 4. The structure of the first hook 2 improves the structural stability of engaging the sub-frame 4. Moreover, since the first cylinder 3 is a finger cylinder, one first cylinder 3 can drive two first hooks 2 simultaneously, reducing costs and improving the synchronization of the first hooks 2.

[0031] The specific installation structure of the second hook 6 is as follows: a second cylinder 7 is installed at the lower end of the fixing frame 1, and two symmetrically arranged second cylinders 7 are provided at both ends of the fixing frame 1 along its length. The driving direction of the second cylinders 7 is perpendicular to the driving direction of the first cylinder 3. The second hook 6 consists of an arc-shaped hook part 61 and a rod part 62 connected to one end of the hook part 61; the opening of the hook part 61 points towards the crossbar 8. The rod part 62 is hinged to the fixing frame 1; the driving end of the second cylinder 7 is connected to the rod part 62, and its connection point is located on one side of the hinge point, away from the hook part 61. With this configuration, the second cylinder 7 drives the second hook 6 to rotate, engaging or disengaging from the crossbar 8.

[0032] Compared with the existing technology, the advantage of this embodiment is that a single device can complete the linkage gripping and separation operation of the mother and child frames 11, which not only reduces costs but also saves the time of switching between two sets of tooling, thereby improving production efficiency.

[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 lens and frame gripping device, characterized in that, Includes a mounting frame (1), which is installed on the drive end of the robotic arm; The fixing frame (1) is provided with: The first hook (2) is driven by the first cylinder (3) to move linearly, moving closer to or away from the sub-frame (4), and is used to engage with the card hole (5) on the sub-frame (4); The second hook (6) is hinged to the fixed frame (1) and rotated by the second cylinder (7) to engage or disengage from the crossbar (8) on the mother frame (11).

2. The spectacle lens and frame gripping device according to claim 1, characterized in that: The first cylinder (3) is a finger cylinder, and the first hook (2) is symmetrically installed on the outside of the drive end of the first cylinder (3).

3. The spectacle lens and frame gripping device according to claim 2, characterized in that: The first hook (2) on the same side of the fixing frame (1) is provided in multiple ways and is fixedly installed on the same mounting plate (9); The mounting plate (9) is fixedly connected to the drive end of the first cylinder (3) via a connecting rod (10).

4. The spectacle lens and frame gripping device according to claim 3, characterized in that: The first hook (2) is L-shaped and consists of a horizontal part (21) and a vertical part (22); One end of the horizontal part (21) is fixedly connected to the mounting plate (9); The lower end of the vertical part (22) is fixedly connected to the other end of the horizontal part (21).

5. The spectacle lens and frame gripping device according to claim 1, characterized in that: The second hook (6) is composed of an arc-shaped hook portion (61) and a rod portion (62) connected to one end of the hook portion (61); The rod (62) is hinged to the fixing frame (1), with the hook (61) on one side of the hinge point and the drive end of the second cylinder (7) on the other side.

6. The spectacle lens and frame gripping device according to claim 1, characterized in that: The subframe (4) is provided with multiple limiting grooves, and the eyeglass lens is snapped into the limiting grooves.

7. The spectacle lens and frame gripping device according to claim 6, characterized in that: The limiting groove is composed of two first slots (41) and one second slot (42); The slots of the first card slot (41) are opposite each other; The second card slot (42) is located below the first card slot (41), with its opening facing upwards; In the vertical projection, the first slot (41) is arranged symmetrically with respect to the second slot (42).

8. The spectacle lens and frame gripping device according to claim 7, characterized in that: The subframe (4) includes two parallel and spaced connecting plates (43), and the card hole (5) is provided on the connecting plate (43); The upper ends of the connecting plates (43) are connected by end plates (44), and multiple middle plates (45) are arranged between the end plates (44); The end plate (44) is provided with a first slot (41) on one side facing the middle plate (45) and on both sides of the middle plate (45) in the horizontal direction; A bottom plate (46) is connected between the bottoms of the connecting plates (43), and a second slot (42) is provided on the upper side of the bottom plate (46).

9. The spectacle lens and frame gripping device according to claim 1, characterized in that: The first hook (2) is located on the left and right sides of the fixing frame (1); The second hook (6) is located on the front and rear sides of the fixing frame (1).

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