Lens transportation mechanism

Abstract

The utility model relates to a kind of lens transport mechanism, comprising: moving mechanism, the fixed seat is installed in the moving mechanism output end, the moving mechanism is used to drive fixed seat linear motion, drive mechanism is installed in the inboard of fixed seat;Mounting seat, the receiving block for placing lens body is equipped on the mounting seat, the drive mechanism output end is connected with the mounting seat through the fixed seat, the drive mechanism is used to drive the mounting seat rotation;In the utility model, by the fixed seat and drive mechanism being set, cooperation mounting seat and receiving block, lens body can be better received and placed, and cooperate drive mechanism better drive lens body to rotate and adjust angle when detecting, so that it can better cooperate detection mechanism to carry out more comprehensive detection on the film layer on lens body, prevent the problem that only local film layer adhesion strength is detected.

Description

Technical Field

[0001] This utility model relates to the field of lens processing technology, specifically to a lens transport mechanism. Background Technology

[0002] In the lens manufacturing process, in order to improve the brightness and color saturation of the lens image and reduce glare caused by reflection, the lens must be coated. After the coating is completed, the lens needs to be transported by a transportation agency to the testing station to test the adhesion of the coating.

[0003] During testing, the testing agency moves a pencil back and forth on the film layer according to the linear trajectory specified in the standard to test the adhesion of the film layer. However, in actual operation, it was found that because the existing lens transport mechanism includes a mounting base for placing the lens and a moving mechanism for moving the mounting base linearly, after the lens moves to the testing station, only a local position of the film layer can be detected linearly, and it is not possible to make multi-angle adjustments to conduct a more comprehensive test of the film layer. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a lens transport mechanism to solve the technical problem that existing lens transport mechanisms cannot adjust the transported lenses at multiple angles, thus affecting the test results.

[0005] This utility model discloses a lens transport mechanism, comprising: a moving mechanism, the output end of which is mounted on a fixed base, the moving mechanism being used to drive the fixed base to perform linear movement, and a driving mechanism being mounted inside the fixed base; and a mounting base, the mounting base having a storage block for placing the lens body, the output end of which passes through the fixed base and is connected to the mounting base, and the driving mechanism being used to drive the mounting base to rotate.

[0006] As a further improvement of this utility model, the fixed base includes a base plate connected to the output end of the moving mechanism, side plates disposed on both sides of the upper surface of the base plate, and a top plate located between the tops of the two side plates. The driving mechanism is installed between the two side plates near the top plate.

[0007] As a further improvement of this utility model, the top of the mounting base is provided with a first slot for placing the storage block, the storage block is interference-fitted with the first slot, the top surface of the storage block is provided with a second slot for placing the lens body, the size of the second slot is adapted to the size of the lens body, and an air suction hole is provided vertically through the center of the bottom wall of the second slot.

[0008] As a further improvement of this utility model, a mounting cavity is provided through one side of the mounting base. The through direction of the mounting cavity is perpendicular to the moving direction of the moving mechanism. An air suction mechanism is installed at the bottom of the inner wall of the mounting cavity. The air suction end of the air suction mechanism is connected to one end of the connecting pipe, and the other end of the connecting pipe passes through the bottom wall of the first slot and is connected to the air suction hole.

[0009] As a further improvement of this utility model, a connector is provided at the connection between the connecting pipe and the air intake hole. The connector includes a first cylinder and a second cylinder. The diameter of the first cylinder is larger than that of the second cylinder. The diameter of the second cylinder matches the inner diameter of the air intake hole. The outer peripheral wall of the second cylinder is interference-fitted with the inner peripheral wall of the air intake hole.

[0010] As a further improvement of this utility model, the first cylinder and the second cylinder are combined into a T-shaped structure, the inner cavity of the first cylinder and the inner cavity of the second cylinder are connected, and the end of the first cylinder away from the second cylinder is sealed and connected to the connecting pipe.

[0011] As a further improvement of this utility model, a bearing is provided at the middle of the bottom end of the mounting base. The output shaft of the drive mechanism passes through the top plate and protrudes from the upper surface of the top plate to connect with the bearing at the bottom of the mounting base. The end of the output shaft of the drive mechanism away from the drive mechanism passes through the bearing and is inserted into the mounting base. A fixing screw is threaded along the vertical direction at the bottom of the inner wall of the mounting cavity. The fixing screw passes through the mounting base and is connected to the output shaft of the drive mechanism.

[0012] As a further improvement of this utility model, the width of the base plate is greater than the distance between the two side plates, and the two sides of the base plate corresponding to the two side plates protrude from the outer peripheral walls of the two side plates.

[0013] As a further improvement of this utility model, a photoelectric switch is fixedly installed on the outer side of any of the side plates near the mounting base, and a sensing sheet is provided on one side of the mounting base at a position corresponding to the photoelectric switch.

[0014] As a further improvement of this utility model, the sensing sheet is arranged in an L-shape, with one side connected and fixed to the mounting base, and the other side extending into the sensing area of ​​the photoelectric switch. Each rotation of the mounting base will cause the sensing sheet to pass through the sensing area of ​​the photoelectric switch once.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] In this invention, the fixed base and driving mechanism, together with the mounting base and storage block, can better store and place the lens body, and the driving mechanism can better drive the lens body to rotate and adjust the angle during testing. This allows for a more comprehensive testing of the coating on the lens body by the testing mechanism, preventing the problem of only testing the adhesion strength of a local coating. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 2 This is a front sectional view of the mounting base and storage block of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall front view of the present invention;

[0021] Figure 4 This is a top view of the overall structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the overall side view structure of this utility model;

[0023] Figure 6 This utility model Figure 3 A magnified structural diagram at point A.

[0024] In the diagram: 1. Moving mechanism; 2. Fixed base; 21. Base plate; 22. Side plate; 23. Top plate; 3. Drive mechanism; 31. Bearing; 32. Fixing screw; 4. Mounting base; 41. Mounting cavity; 42. First slot; 5. Storage block; 51. Lens body; 52. Second slot; 53. Air intake hole; 6. Photoelectric switch; 61. Sensing plate; 7. Air intake mechanism; 71. Connecting pipe; 72. Connector; 721. First cylinder; 722. Second cylinder. Detailed Implementation

[0025] The following illustrations will reveal several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details should not be used to limit the present invention. That is, in some embodiments of the present invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in a simple schematic manner in the illustrations.

[0026] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of this technology, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0028] Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0029] Please see Figure 1-6 The present invention discloses a lens transport mechanism, comprising: a moving mechanism 1, a fixed base 2 installed at the output end of the moving mechanism 1, the moving mechanism 1 being used to drive the fixed base 2 to make linear movements, and a driving mechanism 3 installed inside the fixed base 2; and a mounting base 4, on which a storage block 5 for placing a lens body 51 is provided, the output end of the driving mechanism 3 passing through the fixed base 2 and connected to the mounting base 4, and the driving mechanism 3 being used to drive the mounting base 4 to rotate.

[0030] In specific implementations, the moving mechanism 1 can be a linear motion device such as a servo motor-driven lead screw slide, a cylinder-driven linear module, a gear and rack transmission mechanism, or a hydraulic push rod, whose function is to provide stable and controllable linear displacement. The fixed base 2, as the output end connector of the moving mechanism 1, can be a rigid structure made of cast aluminum alloy or welded steel plate, used as the mounting base for supporting the drive mechanism 3. In this embodiment, the drive mechanism 3 can be specifically defined as a stepper motor, servo motor, or rotary cylinder, etc. The storage block 5, as the supporting component of the lens body 51, can be an ABS plastic part with rubber padding or a silicone molded part.

[0031] The output end of the moving mechanism 1 is typically rigidly connected to the fixed base 2 by bolts or secured with a quick-release clip structure to ensure no relative displacement during power transmission. The design of the drive mechanism 3 being built into the fixed base 2 means that its housing can be interference-fitted with the inner cavity of the fixed base 2 via a flange. The mounting base 4 and the storage block 5 are preferably detachably connected, such as by a magnetic structure or threaded fasteners, to facilitate quick loading and unloading of the lens.

[0032] Through the coordinated operation of the moving mechanism 1 and the rotary drive mechanism 3, a composite motion of linear displacement and angle adjustment is achieved during lens transportation, solving the problem of the single function of traditional lens handling devices. The modular design of the storage block 5 and the mounting base 4 allows for quick replacement of the lens loading unit, adapting to the transportation needs of lenses of different specifications.

[0033] Please see Figure 2 and Figure 6 In this embodiment, the fixed base 2 includes a base plate 21 connected to the output end of the moving mechanism 1, side plates 22 disposed on both sides of the upper surface of the base plate 21, and a top plate 23 located between the tops of the two side plates 22. The driving mechanism 3 is installed between the two side plates 22 near the top plate 23, and the driving mechanism 3 is connected and fixed to the opposite surfaces of the two side plates 22.

[0034] The width of the base plate 21 is greater than the distance between the two side plates 22, and the corresponding sides of the base plate 21 and the two side plates 22 protrude from the outer peripheral walls of the two side plates 22.

[0035] The design of the base plate 21 being wider than the area between the two side plates 22 effectively increases the support area, resulting in better stability when moving on the moving mechanism 1. In practice, the base plate 21 can extend 10-50mm beyond the outer wall of the side plates 22 to form an installation edge. The distance between the side plates 22 is usually determined according to the external dimensions of the drive mechanism 3. The protrusion of the outer peripheral wall must ensure that at least three evenly distributed mounting holes are left on each side of the base plate 21 to facilitate docking with moving mechanisms 1 of different specifications.

[0036] The top of the mounting base 4 has a first slot 42 for placing the storage block 5. The storage block 5 is interference-fitted with the first slot 42. The top surface of the storage block 5 has a second slot 52 for placing the lens body 51. The size of the second slot 52 is adapted to the size of the lens body 51. An air intake hole 53 is vertically opened in the center of the bottom wall of the second slot 52.

[0037] A mounting cavity 41 is provided through one side of the mounting base 4. The through direction of the mounting cavity 41 is perpendicular to the moving direction of the moving mechanism 1. An air suction mechanism 7 is installed at the bottom of the inner wall of the mounting cavity 41. The air suction end of the air suction mechanism 7 is connected to one end of the connecting pipe 71. The other end of the connecting pipe 71 passes through the bottom wall of the first slot 42 and is connected to the air suction hole 53.

[0038] The first slot 42 serves as the positioning structure for the storage block 5, and its cross-section can be designed as a T-shaped slot, dovetail slot, or rectangular slot. The outline of the second slot 52 can be processed into a circular, rectangular, or irregular cavity according to the shape of the lens body 51, and its depth is usually 1 / 3 to 1 / 2 of the lens thickness. The diameter of the suction hole 53 is preferably 1-3mm, and a rubber buffer ring can be set at the opening to prevent scratching the lens. The mounting cavity 41 serves as the housing space for the suction mechanism 7, and its size needs to be 5-10mm larger than the outer shell of the suction mechanism 7 to allow for heat dissipation. The specific implementation of the through-hole direction can be a horizontal through hole or an oblique through hole. The suction mechanism 7 can be a negative pressure generating device such as a miniature vacuum generator, venturi tube, or miniature vacuum pump, and its suction flow rate needs to be adapted to the lens adsorption requirements.

[0039] The characteristic that the through direction of the mounting cavity 41 is perpendicular to the moving direction of the moving mechanism 1 needs to be explained in conjunction with the coordinate system. When the moving mechanism 1 moves linearly along the X-axis, the axis of the mounting cavity 41 should be parallel to the Y-axis. The other end of the connecting pipe 71 passes through the bottom wall of the first slot 42 and connects to the suction hole 53. This should be understood as the connecting pipe 71 passing through the mounting base 4 body and the bottom of the first slot 42 in sequence and then directly connecting to the lower port of the suction hole 53 to form a sealed negative pressure channel. O-ring sealant or thread sealant can be used to prevent leakage.

[0040] Through the synergistic design of graded slots and negative pressure adsorption, the lens is adsorbed and fixed during high-speed transportation. The mechanical positioning of the first slot 42 ensures that the storage block 5 does not shift, the surface positioning of the second slot 52 ensures that the lens does not tilt, and the negative pressure adsorption of the air hole 53 prevents the lens from jumping.

[0041] A connector 72 is provided at the connection between the connecting pipe 71 and the suction port 53. The connector 72 includes a first cylinder 721 and a second cylinder 722. The diameter of the first cylinder 721 is larger than that of the second cylinder 722. The diameter of the second cylinder 722 matches the inner diameter of the suction port 53. The outer peripheral wall of the second cylinder 722 is interference-fitted with the inner peripheral wall of the suction port 53.

[0042] The first cylinder 721 and the second cylinder 722 are combined to form a T-shaped structure. The inner cavity of the first cylinder 721 and the inner cavity of the second cylinder 722 are connected. The end of the first cylinder 721 away from the second cylinder 722 is sealed and connected to the connecting pipe 71.

[0043] The first cylinder 721 serves as the airflow distribution chamber, typically with a diameter ranging from 8-15mm. It can be made of brass or stainless steel, and its inner wall needs to be polished to reduce airflow resistance. The second cylinder 722 serves as the insertion-type connector. It is recommended that the outer diameter of the second cylinder 722 be fitted with the inner diameter of the suction port 53 using an H7 / s6 grade transition fit. In actual machining, the outer diameter of the second cylinder 722 can be 0.01-0.03mm larger than the inner diameter of the suction port 53 to create a moderate interference fit. The T-shaped structure can be implemented using two processes: integral casting and separate welding. Integral casting can be achieved using ZL102 aluminum alloy, while separate welding is recommended to use silver brazing to ensure airtightness. The standard implementation for sealing and connecting is to machine an internal thread at the end of the first cylinder 721, which mates with the external thread of the connecting pipe 71, and then wrap it with PTFE tape to achieve a seal.

[0044] The T-shaped connector 72 structure enables fastener-free installation through the interference fit of the second cylinder 722, improving assembly and disassembly efficiency. The expanded diameter structure of the first cylinder 721 forms a natural gas flow buffer chamber, which significantly improves the stable adsorption of precision optical lenses.

[0045] Please see Figure 2 and Figure 6 It should be noted that a bearing 31 is provided at the bottom center of the mounting base 4. The output shaft of the drive mechanism 3 passes through the top plate 23 and protrudes from the upper surface of the top plate 23 and is connected to the bearing 31 at the bottom of the mounting base 4. The end of the output shaft of the drive mechanism 3 away from the drive mechanism 3 passes through the bearing 31 and is inserted into the mounting base. A fixing screw 32 is threaded along the vertical direction at the bottom of the inner wall of the mounting cavity 41. The fixing screw 32 passes through the mounting base 4 and is connected to the output shaft of the drive mechanism 3.

[0046] The bearing 31 is preferably a deep groove ball bearing 31 or an angular contact bearing 31. The output shaft of the drive mechanism 3 can be specifically implemented as the keyway shaft of a servo motor, the optical shaft of a stepper motor, or the piston rod of a cylinder. Its length protruding from the upper surface of the top plate 23 is recommended to be controlled within the range of 10-30mm. The mounting base refers to the bushing structure formed inside the mounting base 4. The fixing screw 32 adopts fine thread, and the material should preferably be 12.9 grade alloy steel. The engagement length at the threaded connection is not less than 1.5 times the screw diameter.

[0047] The composite connection between the bearing 31 and the screw is fixed. The radial constraint formed by the fixed screw 32 can counteract the centrifugal deformation during high-speed operation, making the connection between the mounting base 4 and the output shaft of the drive mechanism 3 more stable.

[0048] Please see Figure 2 and Figure 6 Specifically, a photoelectric switch 6 is fixedly installed on the outer side of any side plate 22 near the mounting base 4, and a sensing sheet 61 is provided on one side of the mounting base 4 at a position corresponding to the photoelectric switch 6;

[0049] The sensing element 61 is arranged in an L-shape, with one side connected and fixed to the mounting base 4, and the other side extending into the sensing area of ​​the photoelectric switch 6. Each rotation of the mounting base 4 will cause the sensing element 61 to pass through the sensing area of ​​the photoelectric switch 6 once.

[0050] The photoelectric switch 6 can employ through-beam, reflective, or slot-type photoelectric sensors. For specific implementation, a U-slot photoelectric switch 6 is recommended, with a sensing distance of 5-20mm selected based on the installation spacing. The L-shaped structure of the sensing element 61 includes a vertical fixed arm and a horizontal sensing arm. The fixed arm thickness is recommended to be 2-3mm, connected to the mounting base 4 via M3 screws. The horizontal sensing arm thickness is 1-1.5mm, and its end can be machined into a triangle or semi-circle to optimize the trigger signal. The sensing area refers to the effective detection area of ​​the infrared beam within the U-slot of the photoelectric switch 6. Its width is typically 1.2-1.5 times the beam diameter. During installation, it is necessary to ensure that the horizontal arm of the sensing element 61 extends to a depth of at least 2 / 3 of the sensing area width.

[0051] Compared to traditional proximity switch solutions, the combination of the L-shaped sensing element 61 and the photoelectric switch 6 offers three advantages. First, the non-contact detection method extends the service life of the components. Second, by changing the length of the horizontal arm of the sensing element 61 or the installation angle of the photoelectric switch 6, it can flexibly adapt to detection requirements at different speeds. Third, the system's self-calibration function, triggered once per revolution, solves the problem of accumulated errors and effectively improves positioning repeatability.

[0052] When the lens body 51 needs to be transported to the testing station for testing, the lens body 51 is first placed in the second slot 52 by the external suction cup robotic arm. The suction mechanism 7 is then activated, and the suction of the suction mechanism 7 and the connecting tube 71 generates an adsorption force in the suction hole 53, thereby adsorbing and fixing the lens body 51 in the second slot 52, making it more stable during movement. Then, the moving mechanism 1 is activated, and the mounting base 4 and the storage block 5 on the fixed base 2, together with the lens body 51, are moved to the testing station. When the testing pencil at the testing station makes a linear stroke on the film layer on the outer surface of the lens body 51, the drive mechanism 3 is activated. The drive mechanism 3 drives the mounting base 4, the storage block 5, and the lens to rotate, so that the linearly moving testing pencil can sequentially stroke the film layer on the upper surface of the lens body 51 as the lens rotates, thereby making the testing range larger and the testing effect better.

[0053] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A lens transport mechanism, characterized in that, include: A moving mechanism (1) is provided with a fixed base (2) installed at its output end. The moving mechanism (1) is used to drive the fixed base (2) to make linear movements. A driving mechanism (3) is installed on the inner side of the fixed base (2). Mounting base (4), the mounting base (4) is provided with a storage block (5) for placing the lens body (51), the output end of the driving mechanism (3) passes through the fixed base (2) and is connected to the mounting base (4), the driving mechanism (3) is used to drive the mounting base (4) to rotate.

2. The lens transport mechanism according to claim 1, characterized in that: The fixed base (2) includes a base plate (21) connected to the output end of the moving mechanism (1), side plates (22) on both sides of the upper surface of the base plate (21), and a top plate (23) located between the tops of the two side plates (22). The driving mechanism (3) is installed between the two side plates (22) near the top plate (23).

3. The lens transport mechanism according to claim 2, characterized in that: The mounting base (4) has a first slot (42) for placing the storage block (5) at the top. The storage block (5) is press-fitted with the first slot (42). The top surface of the storage block (5) has a second slot (52) for placing the lens body (51). The size of the second slot (52) is adapted to the size of the lens body (51). An air intake hole (53) is vertically opened at the center of the bottom wall of the second slot (52).

4. The lens transport mechanism according to claim 3, characterized in that: The mounting base (4) has a through-hole (41) on one side. The through-hole (41) is perpendicular to the moving direction of the moving mechanism (1). An air suction mechanism (7) is installed at the bottom of the inner wall of the mounting cavity (41). The air suction end of the air suction mechanism (7) is connected to one end of the connecting pipe (71). The other end of the connecting pipe (71) passes through the bottom wall of the first slot (42) and is connected to the air suction hole (53).

5. The lens transport mechanism according to claim 4, characterized in that: The connection between the connecting pipe (71) and the air intake hole (53) is provided with a connector (72). The connector (72) includes a first cylinder (721) and a second cylinder (722). The diameter of the first cylinder (721) is larger than that of the second cylinder (722). The diameter of the second cylinder (722) matches the inner diameter of the air intake hole (53). The outer peripheral wall of the second cylinder (722) is interference-fitted with the inner peripheral wall of the air intake hole (53).

6. The lens transport mechanism according to claim 5, characterized in that: The first cylinder (721) and the second cylinder (722) are combined to form a T-shaped structure. The inner cavity of the first cylinder (721) and the inner cavity of the second cylinder (722) are connected. The end of the first cylinder (721) away from the second cylinder (722) is sealed and connected to the connecting pipe (71).

7. The lens transport mechanism according to claim 4, characterized in that: The mounting base (4) has a bearing (31) at the bottom center. The output shaft of the drive mechanism (3) passes through the top plate (23) and protrudes from the upper surface of the top plate (23) to connect with the bearing (31) at the bottom of the mounting base (4). The end of the output shaft of the drive mechanism (3) away from the drive mechanism (3) passes through the bearing (31) and is inserted into the mounting base. The bottom of the inner wall of the mounting cavity (41) is threaded with a fixing screw (32) in the vertical direction. The fixing screw (32) passes through the mounting base (4) and is connected to the output shaft of the drive mechanism (3).

8. The lens transport mechanism according to claim 2, characterized in that: The width of the base plate (21) is greater than the distance between the two side plates (22), and the two sides of the base plate (21) and the two side plates (22) respectively protrude from the outer peripheral wall of the two side plates (22).

9. The lens transport mechanism according to claim 2, characterized in that: A photoelectric switch (6) is fixedly installed on the outer side of any of the side plates (22) near the mounting base (4), and a sensing sheet (61) is provided on one side of the mounting base (4) at a position corresponding to the photoelectric switch (6).

10. The lens transport mechanism according to claim 9, characterized in that: The sensing element (61) is arranged in an L-shape, with one side connected and fixed to the mounting base (4), and the other side extending into the sensing area of ​​the photoelectric switch (6). The mounting base (4) rotates once, causing the sensing element (61) to pass through the sensing area of ​​the photoelectric switch (6) once.

Images