Automatic focusing multi-lens device

Abstract

The utility model relates to the technical field of measuring equipment, and discloses an automatic focusing multi-lens device. The device comprises a supporting plate and a Z-axis driving mechanism installed on the supporting plate. The Z-axis driving mechanism comprises a driving motor and a transmission assembly which are arranged on the two side faces of the supporting plate. The measuring mechanism comprises a first mounting rack, a second mounting rack and a plurality of lens modules; the first mounting frame is provided with at least two lens modules, first adjusting structures are respectively arranged on two side surfaces, close to the first mounting frame, of the second mounting frame, and a second adjusting mechanism is arranged on the side surface, far away from the first mounting frame, of the second mounting frame; the driving ends of the first adjusting mechanism and the second adjusting mechanism are respectively provided with a lens module. According to the automatic focusing multi-lens device, the to-be-detected workpiece can be quickly and accurately detected in multiple directions without moving and focusing the lens module above the to-be-detected workpiece for multiple times, and the measurement efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to an automatic focusing multi-lens device. Background Art

[0002] Visual measurement equipment is used in electronics, packaging, logistics, precision assembly, semiconductor manufacturing, 3C product production, scientific research and education, as well as military and aerospace fields to perform image recognition, visual positioning, dimension measurement, defect detection and other tasks; it improves production efficiency and product quality, reduces labor costs and human errors, and plays an important role in industrial automation and intelligent manufacturing.

[0003] The existing Chinese utility model patent with announcement number CN212674746U records a glass photograph visual inspection device, including a base plate, at least two columns are provided on the base plate, the columns are slidably connected to the base plate, a second guide rail is provided between the two columns, the second guide rail is slidably connected to the columns, a support frame is provided on the second guide rail, the support frame is slidably connected to the second guide rail, an industrial camera is provided on the support frame, a light source is provided on one side of the industrial camera, the position of the column can be adjusted to achieve the front and rear position of the industrial camera and the light source, the support frame can be adjusted to adjust the left and right position of the industrial camera and the light source, and the second guide rail can be adjusted to slide up and down to move the industrial camera and the light source up and down. By adjusting different positions, detailed inspection of each position of the glass photograph can be performed.

[0004] In the above-mentioned glass photo visual inspection device, when measuring multiple positions of the same workpiece, the industrial camera needs to be moved and focused multiple times to complete accurate measurement of the workpiece, resulting in low measurement efficiency.

[0005] Therefore, there is an urgent need for an auto-focus multi-lens device to solve the above problems. Utility Model Content

[0006] Based on the above, the purpose of the present invention is to provide an autofocus multi-lens device to solve the problem of low measurement efficiency caused by the need for the industrial camera to move and focus multiple times when measuring multiple positions of the same workpiece in the background technology.

[0007] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0008] The utility model provides an autofocus multi-lens device, comprising a support plate and a Z-axis drive mechanism mounted on the support plate, wherein the Z-axis drive mechanism comprises a drive motor and a transmission assembly respectively arranged on two sides of the support plate;

[0009] The measuring mechanism includes a first mounting frame, a second mounting frame, and a plurality of lens modules; the first mounting frame is mounted on the transmission assembly, and the second mounting frame is mounted on an end of the first mounting frame away from the transmission assembly;

[0010] The first mounting frame is provided with at least two lens modules, the second mounting frame is provided with first adjustment mechanisms on two sides close to the first mounting frame, and the second mounting frame is provided with a second adjustment mechanism on a side away from the first mounting frame; the driving ends of the first adjustment mechanism and the second adjustment mechanism are respectively provided with lens modules;

[0011] The Z-axis driving mechanism drives the measuring mechanism to move up and down, and the first adjusting mechanism and the second adjusting mechanism respectively drive the corresponding lens modules to move up and down.

[0012] As an optional technical solution for an autofocus multi-lens device, the first adjustment mechanism includes a servo motor, a coupling and a first screw rod, the first screw rod is rotatably connected to the output end of the servo motor through the coupling, and the second adjustment mechanism has the same structure as the first adjustment mechanism.

[0013] As an optional technical solution for an autofocus multi-lens device, the second mounting frame is provided with an upper bracket and a lower bracket, the servo motor is mounted on the upper bracket, and the end of the first screw away from the coupling is rotatably connected to the lower bracket.

[0014] As an optional technical solution for an autofocus multi-lens device, the second mounting frame is equipped with a first slide rail and a first slider matching the first slide rail, the first slider is connected to a first drive seat, the first drive seat is provided with a first thread rolling bearing, and the first drive seat is threadedly connected to the first screw rod through the first thread rolling bearing.

[0015] As an optional technical solution for an auto-focus multi-lens device, a mounting seat is provided on a side of the first driving seat away from the second mounting frame, and the lens module is mounted on the mounting seat.

[0016] As an optional technical solution for an autofocus multi-lens device, the transmission assembly includes a second screw, a second drive seat and a driven wheel installed on the top of the second screw, and the second drive seat is provided with a second threaded bearing. The second drive seat is threadedly connected to the second screw through the second threaded bearing.

[0017] As an optional technical solution for an auto-focus multi-lens device, a driving wheel is provided at the output end of the driving motor, and a driving belt is connected between the driving wheel and the driven wheel.

[0018] As an optional technical solution for an autofocus multi-lens device, the support plate is located on the left and right sides of the second screw rod and is respectively provided with a second slide rail and a second slider matching the second slide rail, and the two ends of the second drive seat are respectively connected to the two second sliders.

[0019] As an optional technical solution for an autofocus multi-lens device, a support seat is installed at the bottom end of the support plate, and the support plate is located on the left and right sides of the drive motor and is respectively equipped with support reinforcements connected to the support plate and the support seat.

[0020] The beneficial effects of the utility model are:

[0021] The utility model provides an autofocus multi-lens device, which comprises a support plate and a Z-axis driving mechanism mounted on the support plate, the Z-axis driving mechanism comprising a driving motor and a transmission assembly respectively arranged on two side surfaces of the support plate; a measuring mechanism comprising a first mounting frame, a second mounting frame and a plurality of lens modules; the first mounting frame is mounted on the transmission assembly, and the second mounting frame is mounted on an end of the first mounting frame away from the transmission assembly; the first mounting frame is provided with at least two lens modules, the second mounting frame is respectively provided with first adjustment mechanisms on two side surfaces close to the first mounting frame, and the second adjustment mechanism is provided on a side surface of the second mounting frame away from the first mounting frame; the lens modules are respectively mounted on the driving ends of the first adjustment mechanism and the second adjustment mechanism.

[0022] Under the above structure, the autofocus multi-lens device drives the measuring mechanism to move up and down through the Z-axis drive mechanism, and the first adjustment mechanism and the second adjustment mechanism respectively drive the corresponding lens modules to move up and down to realize that the multiple lens modules automatically adjust the focal lengths of the spacing at different positions of the workpiece to be inspected. There is no need for the lens module to move and focus multiple times above the workpiece to be inspected, and the workpiece to be inspected can be quickly and accurately inspected in all directions, thereby improving the measurement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the auto-focus multi-lens device in an embodiment of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of the measuring mechanism in an embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the first adjustment mechanism and the second adjustment mechanism in an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the Z-axis drive module in an embodiment of the present utility model;

[0027] Figure 5Schematic diagram of the structure of the Z-axis drive module in another perspective in an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Support plate; 10. Support seat; 11. Support reinforcement;

[0030] 2. Z-axis drive mechanism; 20. Drive motor; 201. Driving pulley; 202. Drive belt; 21. Transmission assembly; 210. Second screw rod; 211. Second drive seat; 212. Second rolling bearing; 213. Driven pulley; 22. Second slide rail; 23. Second slider; 24. Limit sensor; 25. Limit sensor plate;

[0031] 3. Measuring mechanism; 30. First mounting frame; 31. Second mounting frame; 32. First slide rail; 320. First slider; 321. First drive seat; 322. First rolling bearing; 323. Mounting seat; 33. Lens module; 34. First adjustment mechanism; 340. Servo motor; 341. Coupling; 342. First screw rod; 343. Upper bracket; 344. Lower bracket; 35. Second adjustment mechanism. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0033] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0036] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] like Figure 1-5 As shown, the utility model provides an autofocus multi-lens device, which includes a support plate 1 and a Z-axis drive mechanism 2 installed on the support plate 1, the Z-axis drive mechanism 2 includes a drive motor 20 and a transmission assembly 21 respectively arranged on both sides of the support plate 1; a measuring mechanism 3, including a first mounting frame 30, a second mounting frame 31 and a plurality of lens modules 33; the first mounting frame 30 is installed on the transmission assembly 21, and the second mounting frame 31 is installed at one end of the first mounting frame 30 away from the transmission assembly 21; the first mounting frame 30 is provided with at least two lens modules 33, the second mounting frame 31 is respectively provided with a first adjustment mechanism on the two sides close to the first mounting frame 30, and the second adjustment mechanism 35 is provided on the side of the second mounting frame 31 away from the first mounting frame 30; the driving ends of the first adjustment mechanism 34 and the second adjustment mechanism 35 are respectively installed with the lens modules 33; wherein, the Z-axis drive mechanism 2 drives the measuring mechanism 3 to move up and down, and the first adjustment mechanism 34 and the second adjustment mechanism 35 respectively drive the corresponding lens modules 33 to move up and down.

[0038] The utility model provides an automatic focusing multi-lens device, which drives the measuring mechanism 3 to move up and down by the Z-axis driving mechanism 2 and drives the corresponding lens modules 33 to move up and down by the first adjusting mechanism 34 and the second adjusting mechanism 35 respectively, so that the focal lengths of the multiple lens modules 33 are automatically adjusted according to the spacing at different positions of the workpiece to be inspected. Without the need for the lens module 33 to move and focus multiple times above the workpiece to be inspected, the workpiece to be inspected can be quickly and accurately inspected in multiple directions, thereby improving the measurement efficiency.

[0039] Specifically, such as Figure 2 and Figure 3 As shown, a connecting seat for mounting a lens module 33 is installed at the bottom of the first mounting frame 30, and the two ends of the connecting seat extend to the two sides of the first mounting frame 30 respectively, and the lens modules 33 are installed at both ends of the connecting seat; there are two first adjustment mechanisms 34, which are respectively installed on the left and right side surfaces of the second mounting frame 31, and the driving end of each first adjustment mechanism 34 is respectively installed with a lens module 33; the second adjustment mechanism 35 is installed on the front end surface of the second mounting frame 31, and the driving end of the second adjustment mechanism 35 is equipped with a connecting seat, and the two ends of the connecting seat extend to the two sides of the second adjustment mechanism 35 respectively, and the lens modules 33 are respectively installed at both ends of the connecting seat; under the above structure, the Z-axis drive module drives the entire measuring mechanism 3 to move up and down, and the first adjustment mechanism 34 and the second adjustment mechanism 35 respectively drive their corresponding lens modules 33 to move up and down. Through the layout setting of multiple lenses and the independent lifting and lowering between the multiple lenses, precise focusing and shooting detection of the workpiece to be inspected in multiple directions and angles are achieved, so that the automatic focus multi-lens device improves the efficiency and accuracy of workpiece measurement.

[0040] In this embodiment, if Figure 3 As shown, two first adjustment mechanisms 34 are installed on the left and right sides of the second mounting frame 31 along the Z-axis direction, including a servo motor 340, a coupling 341 and a first screw rod 342. The upper and lower ends of the side of the second mounting frame 31 are respectively equipped with an upper bracket 343 and a lower bracket 344. The servo motor 340 is installed on the upper bracket 343, and the first screw rod 342 is rotatably connected to the output end of the servo motor 340 through the coupling 341. The end of the first screw rod 342 away from the coupling 341 is rotatably connected to the lower bracket 344.

[0041] Furthermore, the second mounting frame 31 is provided with a first slide rail 32 parallel to the first adjustment mechanism 34, and the first slide rail 32 is provided with a first slider 320 matching it, and the first slider 320 is connected to the first driving seat 321, and the first driving seat 321 is installed with a first threaded bearing 322, and the first driving seat 321 is threadedly connected to the first screw rod 342 through the first threaded bearing 322. The arrangement of the first slide rail 32 and the first slider 320 enables the first adjustment mechanism 34 to stably drive the lens module 33 to move up and down; the side of the first driving seat 321 away from the second mounting frame 31 is provided with a mounting seat 323, and the lens module 33 is installed on the mounting seat 323; that is, the servo motor 340 drives the first driving seat 321 to move up and down by driving the screw rod to rotate, and then drives the lens module 33 to move up and down, so that the lens module 33 installed on the first driving seat 321 can automatically focus and shoot the workpiece to be inspected. The second adjustment mechanism 35 is installed on the front end surface of the second mounting bracket 31 along the Z-axis direction, and the second adjustment mechanism 35 has the same structure as the first adjustment mechanism 34 .

[0042] In this embodiment, if Figure 4 and Figure 5 As shown, the driving motor 20 and the transmission assembly 21 are respectively installed on the front and rear surfaces of the support plate 1 along the Z-axis direction. The output end of the driving motor 20 is installed with a driving wheel 201 and is arranged upward. The transmission assembly 21 includes a second screw rod 210, a second driving seat 211 and a driven wheel 213 installed at the top of the second screw rod 210. A driving belt 202 is set between the driving wheel 201 and the driven wheel 213 for rotational connection; a second rolling bearing 212 is provided on the second driving seat 211, and the second driving seat 211 is threadedly connected to the second screw rod 210 through the second rolling bearing 212; the support plate 1 is respectively provided with a second screw rod 210 on the left and right sides. The slide rail 22 is provided with a second slider 23 matching the second slide rail 22, and the two ends of the second drive seat 211 are respectively connected to the two second sliders 23, and the first mounting bracket 30 is installed on the second drive seat 211; that is, the drive motor 20 drives the second drive seat 211 to move up and down and then drives the entire measuring mechanism 3 to move up and down, so that the two lens modules 33 installed on the first mounting bracket 30 can automatically adjust the focus and shoot the workpiece to be inspected through the Z-axis drive module. On the other hand, the Z-axis drive module drives the measuring mechanism 3 to move up and down to facilitate the removal and placement of the workpiece to be inspected located below the lens module 3, thereby increasing the applicability of the device.

[0043] Further, such as Figure 5As shown, a support base 10 is installed at the bottom end of the support plate 1, and the support base 10 is used to be installed and connected with the measuring equipment; the support plate 1 is located on the left and right sides of the drive motor 20 and is respectively equipped with support reinforcements 11 connected to the support plate 1 and the support base 10. The setting of the support reinforcement 11 makes the rigidity and stability of the autofocus multi-lens device better; most of the driving sources in the prior art are directly or indirectly connected to the industrial camera, so that the vibration generated by the driving source is directly transmitted to the industrial camera, thereby affecting its measurement efficiency and accuracy; the driving motor 20 and the transmission assembly 21 in this embodiment are independently arranged on the front and rear sides of the support plate 1. The structure can avoid the vibration generated by the driving motor 20 when it is working being transmitted to the detection assembly and affecting the measurement efficiency and accuracy of the detection assembly on the workpiece; the stability of the device is improved.

[0044] Specifically, such as Figure 5 As shown, two limit sensors 24 are installed at the upper and lower positions on one side of the support plate 1, and a matching limit sensing plate 25 is provided on one side of the second drive seat 211. The setting of the limit sensor 24 and the limit sensing plate 25 ensures the movement stroke of the measuring mechanism 3 in the Z-axis direction, prevents excessive movement and separation from the second slide rail 22, and increases the stability and service life of the device.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. An autofocus multi-lens device, comprising a support plate and a Z-axis drive mechanism mounted on the support plate, characterized in that: The Z-axis drive mechanism includes a drive motor and a transmission assembly respectively arranged on two sides of the support plate; The measuring mechanism includes a first mounting frame, a second mounting frame, and a plurality of lens modules; the first mounting frame is mounted on the transmission assembly, and the second mounting frame is mounted on an end of the first mounting frame away from the transmission assembly; The first mounting frame is provided with at least two lens modules, the second mounting frame is provided with first adjustment mechanisms on two sides close to the first mounting frame, and the second mounting frame is provided with a second adjustment mechanism on a side away from the first mounting frame; the driving ends of the first adjustment mechanism and the second adjustment mechanism are respectively provided with lens modules; The Z-axis driving mechanism drives the measuring mechanism to move up and down, and the first adjusting mechanism and the second adjusting mechanism respectively drive the corresponding lens modules to move up and down.

2. The auto-focus multi-lens device according to claim 1, wherein: The first adjusting mechanism includes a servo motor, a coupling and a first screw rod. The first screw rod is rotatably connected to the output end of the servo motor through the coupling. The second adjusting mechanism has the same structure as the first adjusting mechanism.

3. The auto-focus multi-lens device according to claim 2, wherein: An upper bracket and a lower bracket are mounted on the second mounting frame, the servo motor is mounted on the upper bracket, and one end of the first screw rod away from the coupling is rotatably connected to the lower bracket.

4. The auto-focus multi-lens device according to claim 2, wherein: The second mounting frame is equipped with a first slide rail and a first slider matching the first slide rail, the first slider is connected to a first driving seat, the first driving seat is provided with a first thread rolling bearing, and the first driving seat is threadedly connected to the first screw rod through the first thread rolling bearing.

5. The auto-focus multi-lens device according to claim 4, wherein: A mounting seat is provided on the side of the first driving seat away from the second mounting frame, and the lens module is mounted on the mounting seat.

6. The auto-focus multi-lens device according to claim 1, wherein: The transmission assembly includes a second screw rod, a second drive seat and a driven wheel installed on the top end of the second screw rod. The second drive seat is provided with a second thread rolling bearing. The second drive seat is threadedly connected to the second screw rod through the second thread rolling bearing.

7. The auto-focus multi-lens device according to claim 6, wherein: The output end of the driving motor is provided with a driving wheel, and a driving belt is connected between the driving wheel and the driven wheel.

8. The auto-focus multi-lens device according to claim 6, wherein: The support plate is located on the left and right sides of the second screw rod and is respectively provided with a second slide rail and a second slider matching the second slide rail. Both ends of the second drive seat are respectively connected to the two second sliders.

9. The auto-focus multi-lens device according to claim 1, wherein: A support seat is installed at the bottom end of the support plate, and the support plate is located on the left and right sides of the drive motor and is respectively equipped with support reinforcements connected to the support plate and the support seat.

Images