Lens moving mechanism and coupling device

Abstract

The utility model belongs to the field of optical devices, and particularly relates to a lens moving mechanism and a coupling device. Comprising a lens pickup assembly; the three-dimensional force sensor is connected with the lens fixing mechanism; and the moving assembly is connected with the lens pickup assembly through the three-dimensional force sensor, and the moving assembly can drive the lens fixing mechanism to move. The utility model provides a lens moving mechanism, and aims to solve the problem that a detection mechanism of a lens moving mechanism in the prior art is complex in structure.

Description

Lens moving mechanism and coupling device Technical Field

[0001] This utility model belongs to the field of optical devices, specifically relating to a lens moving mechanism and coupling device. Background Technology

[0002] A lens is an optical component used in optical devices. Lenses are typically mounted on a PCB board using adhesive bonding. When mounting a lens, a lens moving mechanism is needed to accurately place the lens from the outside onto the coupling position on the PCB board.

[0003] Lens moving mechanisms typically include a lens fixing assembly, a detection assembly, and a moving assembly. The lens fixing assembly is used to fix the lens in place, and the moving assembly is used to drive the lens to move. The detection assembly is used to detect whether the lens is in contact with the PCB board. Once the lens is in contact with the PCB board, the moving assembly will stop driving the lens downwards to avoid collision and damage to the lens.

[0004] In the prior art, the detection assembly includes a first sensing part, a second sensing part, and a return spring. When the lens is not in contact with the PCB board, the first and second sensing parts are in contact; when the lens is in contact with the PCB board, the first and second sensing parts separate. The return spring is used to drive the first and second sensing parts to contact each other after the lens coupling installation is completed. For a prior art detection assembly, please refer to the applicant's earlier application, application number 202211053358.1, entitled "A Coupling System and Lens Assembly Method".

[0005] However, as can be seen from the above introduction, the detection components used in the existing technology require many parts, have a relatively complex structure, and are not convenient to maintain. Summary of the Invention

[0006] This utility model provides a lens moving mechanism, the purpose of which is to solve the problem of complex structure of the detection component in the existing lens moving mechanism.

[0007] To achieve the above objectives, this utility model provides a lens moving mechanism, including...

[0008] Lens pickup assembly;

[0009] A three-dimensional force sensor, which is connected to the lens pickup assembly;

[0010] A movable component, connected to the lens pickup component via the three-dimensional force sensor, wherein the movable component can drive the lens pickup component to move; and

[0011] A controller, which is signal-connected to the three-dimensional force sensor and the moving component.

[0012] In this solution, the lens pickup component is used to pick up the lens, and then the moving component moves the picked-up lens to the coupling position. The lens pickup component is connected to the moving component through a three-dimensional force sensor. When the lens picked up by the lens pickup component comes into contact with the PCB board, the three-dimensional force sensor accurately detects this and feeds the signal back to the controller. The controller then controls the moving component to stop moving the lens pickup component downwards, thus preventing the lens from colliding and being damaged by the PCB board.

[0013] Preferably, in order to pick up the lens, the lens picking assembly of this solution includes a suction unit, the suction unit includes a suction nozzle, and the suction nozzle can adsorb the lens through negative pressure.

[0014] This solution uses a suction nozzle to adsorb the lens through negative pressure. The nozzle can pick up the lens from the lens container and also fix the lens in place during movement to prevent it from falling.

[0015] Preferably, for nozzle mounting, the lens pickup assembly of this solution includes a connecting component and a negative pressure source. The nozzle and the negative pressure source are respectively mounted at both ends of the connecting component, and the connecting component has an internal airflow channel. Both ends of the airflow channel are connected to the nozzle and the negative pressure source, respectively. This solution uses the connecting component as the mounting base for the nozzle, ensuring stable nozzle mounting. Through the connection between the negative pressure source and the connecting component, the negative pressure source provides suction force, ensuring that the nozzle can effectively adhere and fix the lens.

[0016] Preferably, to further secure the lens, the lens pickup assembly of this solution further includes a clamping unit. The clamping unit includes a first clamping arm, a second clamping arm, and a clamping cylinder. The first and second clamping arms are arranged opposite to each other, and the suction nozzle is positioned between the first and second clamping arms. The first and second clamping arms are connected to the clamping cylinder, which can drive the first and second clamping arms to move closer together, thereby clamping and securing the lens. In this solution, after the suction nozzle has attracted and secured the lens, the first and second clamping arms then clamp and secure the lens. Therefore, the lens is simultaneously constrained by negative pressure and clamping force, resulting in more stable lens fixation and preventing the lens from falling during movement.

[0017] Preferably, since the top space often houses multiple devices, interference should be minimized. In this design, both the first and second clamping arms include a clamping portion and a connecting portion. The connecting portion is used to connect with the clamping cylinder, and the clamping portion and connecting portion are arranged in a V-shape. In this design, the clamping portion is used to contact the lens, while the connecting portion is used for connection and fixation. Therefore, when the clamping portion and connecting portion are arranged in a V-shape, the space above the clamping portion is left open, avoiding interference between the clamping arm and other devices.

[0018] Preferably, to secure the suction unit and the clamping unit, the lens pickup assembly of this solution includes a frame, on which the suction unit and the clamping unit are mounted. This solution mounts both the suction unit and the clamping unit onto the frame, which serves as the mounting base for both. Furthermore, once mounted on the frame, the suction unit and the clamping unit are in a fixed position, preventing interference between them.

[0019] Preferably, the three-dimensional force sensor described in this solution is connected to the frame.

[0020] Preferably, to achieve lens fixation, the moving component in this solution includes a tilt displacement stage and a coupling platform. The tilt displacement stage is mounted on the coupling platform and connected to the three-dimensional force sensor. This solution arranges the tilt displacement stage and the coupling platform to cooperate with each other, allowing the lens to be precisely moved to the coupling position.

[0021] Preferably, the solution further includes a controller, which is signal-connected to the three-dimensional force sensor and the moving component.

[0022] This solution establishes a signal connection between the controller, a 3D force sensor, and a moving component. When the 3D force sensor detects contact between the lens and the PCB board, it sends a signal back to the controller. The controller then controls the moving component to stop moving the lens downwards, preventing the lens from colliding with and damaging the PCB board.

[0023] The second aspect of this utility model discloses a coupling device, including the aforementioned lens moving mechanism. By incorporating a lens moving mechanism with a three-dimensional force sensor into the coupling device, damage to the lens and the PCB board from collisions is avoided.

[0024] The beneficial effects of this invention are as follows: In this solution, the lens pickup assembly is used to pick up the lens, and then the moving assembly moves the picked-up lens to the coupling position. The lens pickup assembly is connected to the moving assembly through a three-dimensional force sensor. When the lens picked up by the lens pickup assembly contacts the PCB board, the three-dimensional force sensor accurately detects this and feeds the signal back to the controller. The controller then controls the moving assembly to stop moving the lens pickup assembly downwards, thus preventing the lens from colliding and being damaged by the PCB board. Attached Figure Description

[0025] Figure 1 is a schematic diagram of the lens moving mechanism.

[0026] Figure 2 is a schematic diagram of the lens pickup assembly and the three-dimensional force sensor.

[0027] Figure 3 is a schematic diagram of the absorption unit.

[0028] Figure 4 is a schematic diagram of the clamping unit.

[0029] Figure 5 is a schematic diagram of the first clamping arm.

[0030] The reference numerals in the accompanying drawings include: lens pickup assembly 1, suction unit 11, suction nozzle 111, connecting component 112, clamping unit 12, first clamping arm 121, first clamping surface 121a, second clamping arm 122, second clamping surface 122a, clamping cylinder 123, three-dimensional force sensor 2, moving assembly 3, tilt displacement stage 31, and coupling platform 32. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0032] In this disclosure, unless otherwise stated, directional terms such as "inner" and "outer" are defined based on the contours of the corresponding components. Terms such as "first" and "second" used in this disclosure are for distinguishing one element from another and do not imply sequence or importance.

[0033] Example 1

[0034] As shown in Figure 1, a lens moving mechanism includes a lens picking component 1, a three-dimensional force sensor 2, a moving component 3, and a controller.

[0035] In this embodiment, the lens pickup assembly 1 is used to remove the lens from the lens container and to keep the lens stable during movement. As shown in Figure 2, the lens pickup assembly 1 includes a suction unit 11, a clamping unit 12, and a frame. The suction unit 11 and the clamping unit 12 can be connected to the frame by welding or by fasteners. The frame is a metal frame.

[0036] As shown in Figure 3, the suction unit 11 in this embodiment specifically includes a suction nozzle 111, a connecting component 112, and a negative pressure source. The connecting component 112 is made of metal and has an internal airflow channel. The connecting component 112 can be U-shaped, V-shaped, or arc-shaped, etc., and is used to change the air supply direction of the nozzle. The nozzle and the negative pressure source are respectively installed at both ends of the connecting component 112, and the nozzle is connected to the airflow channel inside the connecting component 112. The negative pressure source can be a vacuum pump (not shown in the figure), and is connected to the airflow channel.

[0037] For example, in one application scenario: when a lens needs to be picked up from its container, the air nozzle contacts the lens, and then the negative pressure source activates, creating a negative pressure at the nozzle opening. The air nozzle uses this negative pressure to adhere and fix the lens, thus achieving lens pickup.

[0038] As shown in Figure 4, the clamping unit 12 of this embodiment includes a first clamping arm 121, a second clamping arm 122, and a clamping cylinder 123. The first clamping arm 121 and the second clamping arm 122 are respectively disposed on both sides of the air nozzle, and the air nozzle is accommodated between the first clamping arm 121 and the second clamping arm 122. The first clamping arm 121 and the second clamping arm 122 are connected to the clamping cylinder 123. When the clamping cylinder 123 is working, it drives the first clamping arm 121 and the second clamping arm 122 to move closer to each other and further away from each other. When the first clamping arm 121 and the second clamping arm 122 move closer to each other, they clamp and fix the lens; when they move further away from each other, they release the lens.

[0039] As shown in Figure 5, the first clamping arm 121 and the second clamping arm 122 in this embodiment have the same structure. Both the first clamping arm 121 and the second clamping arm 122 include a clamping portion and a connecting portion, and the clamping portion and the connecting portion are preferably arranged in a V-shape. The clamping portions of the first clamping arm 121 and the second clamping arm 122 are both L-shaped to avoid interference with the nozzle 111. The clamping portion of the first clamping arm 121 is provided with a first clamping surface 121a, and the clamping portion of the second clamping arm 122 is provided with a second clamping surface 122a. The first clamping surface 121a and the second clamping surface 122a are parallel to each other, and both the first clamping surface 121a and the second clamping surface 122a are parallel to the air nozzle. The first clamping surface 121a and the second clamping surface 122a extend to the bottom of the air nozzle.

[0040] Taking one application scenario as an example: After the air nozzle attracts the lens, the clamping power is activated, causing the first clamping arm 121 and the second clamping arm 122 to move closer together. The first clamping arm 121 and the second clamping arm 122 work together to clamp and fix the lens. The air nozzle fixes the lens through negative pressure adsorption, and the first clamping arm 121 and the second clamping arm 122 work together to clamp and fix the lens. The lens is simultaneously subjected to negative pressure adsorption force and clamping fixing force, making the lens more stable.

[0041] In this embodiment, the three-dimensional force sensor 2 is mounted on the frame using fasteners, and then the three-dimensional force sensor 2 is connected to the moving component 3.

[0042] As shown in Figure 1, the moving component 3 in this embodiment includes a tilt displacement stage 31 and a coupling platform 32. The tilt displacement stage 31 is connected to the three-dimensional force sensor 2 and is mounted on the coupling platform 32. The tilt displacement stage 31 and the coupling platform 32 cooperate to move the lens precisely to the coupling position on the PCB board.

[0043] In this embodiment, the tilt displacement stage 31 and coupling platform 32 in the three-dimensional force sensor 2 and the moving component 3 are all connected to the controller via signals. The controller can be a PLC control module, a microcontroller control module, or an industrial control computer control module, as is available in the prior art.

[0044] The lens pickup assembly 1 in this embodiment can also be connected to the controller via a signal, or the lens pickup assembly 1 can be manually operated by an operator.

[0045] The following describes the entire movement process of the lens moving mechanism: When a lens needs to be picked up, the controller controls the moving component 3 to work, and the moving component 3 moves the lens picking component 1 to directly above the lens container; then the lens picking component 1 works to pick up the lens from the lens container; then the controller controls the moving component 3 to work, and the moving component 3 moves the lens picking component 1 to the PLB board; then the controller controls the moving component 3 to work, and the moving component 3 moves the lens picking component 1 downward until the lens moves onto the PCB board, the lens contacts the PCB board, and the three-dimensional force sensor 2 detects the pressure; then the controller controls the moving component 3 to stop working, and the lens stops at the coupling position; finally, the controller controls the lens picking component 1 to release the lens, and the lens is mounted on the coupling position on the PCB board.

[0046] Example 2

[0047] This embodiment provides a coupling device, including the lens moving mechanism, PCB board fixing device, glue application device, and fixing device as described in Embodiment 1.

[0048] In this embodiment, the PCB board fixing device is used to fix the PCB board in a horizontal position. The lens moving mechanism moves the lens from the lens container to the coupling position on the PCB board. The glue dispensing device is used to release glue onto the coupling position on the PCB board. The fixing device is used to fix the lens, ensuring that the lens is fixed at the coupling position.

[0049] The PCB board fixing device, glue application device, and fixing device in this embodiment can all be the PCB board fixing device, glue application device, and fixing device in existing coupling devices.

[0050] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A lens moving mechanism, characterized in that: It includes a lens pickup assembly; a three-dimensional force sensor connected to the lens pickup assembly; and a moving assembly connected to the lens pickup assembly via the three-dimensional force sensor, the moving assembly being able to drive the lens pickup assembly to move.

2. The lens moving mechanism according to claim 1, characterized in that: The lens pickup assembly includes a suction unit, which includes a suction nozzle that can adsorb the lens through negative pressure.

3. The lens moving mechanism according to claim 2, characterized in that: The lens pickup assembly includes a connecting component and a negative pressure source. The suction nozzle and the negative pressure source are respectively installed at both ends of the connecting component, and the connecting component has an internal airflow channel. The two ends of the airflow channel are respectively connected to the suction nozzle and the negative pressure source.

4. The lens moving mechanism according to claim 2, characterized in that: The lens pickup assembly further includes a clamping unit, which includes a first clamping arm, a second clamping arm, and a clamping cylinder. The first clamping arm and the second clamping arm are arranged opposite to each other, and the suction nozzle is disposed between the first clamping arm and the second clamping arm. The first clamping arm and the second clamping arm are connected to the clamping cylinder, which can drive the first clamping arm and the second clamping arm to move closer together to achieve lens clamping and fixing.

5. The lens moving mechanism according to claim 4, characterized in that: Both the first and second clamping arms include a clamping portion and a connecting portion, the connecting portion being used to connect with the clamping cylinder, and the clamping portion and the connecting portion being distributed in a V-shape.

6. The lens moving mechanism according to claim 4, characterized in that: The lens pickup assembly includes a frame, and the pickup unit and clamping unit are mounted on the frame.

7. The lens moving mechanism according to claim 6, characterized in that: The three-dimensional force sensor is connected to the frame.

8. The lens moving mechanism according to claim 1, characterized in that: The moving component includes a tilt displacement stage and a coupling platform. The tilt displacement stage is mounted on the coupling platform and is connected to the three-dimensional force sensor.

9. The lens moving mechanism according to claim 1, characterized in that: It also includes a controller that is signal-connected to the three-dimensional force sensor and the moving component.

10. A coupling device, characterized in that: Includes the lens moving mechanism as described in any one of claims 1 to 9.

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