AOI camera capable of rapidly adjusting focal length

Abstract

The utility model discloses an AOI camera capable of quickly adjusting focal length, and relates to the technical field of AOI camera structures, which comprises a camera body, a fixed cylinder fixedly arranged on the bottom surface of the camera body, an outer cylinder body connected with the bottom of a rotating cylinder and communicated with the rotating cylinder, and a step surface formed between the top surface of the outer cylinder body and the inner wall of the rotating cylinder, an inner cylinder is in threaded connection with the interior of the outer cylinder, the upper end of the inner cylinder extends into the rotating cylinder, an annular limiting plate is fixedly arranged at the extending end, the lower end of the inner cylinder extends downwards to the outside of the outer cylinder, and a lens is fixedly arranged at the extending end; a driving assembly used for driving the rotary drum to rotate around the axis of the rotary drum is further arranged between the fixed drum and the rotary drum. The screen detection device has the beneficial effects that the working intensity of workers is greatly reduced, and the detection efficiency of different types of screens is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of AOI camera structure, especially a kind of AOI camera of fast focus adjustment. BACKGROUND

[0002] The AOI camera used in production workshop is to detect whether there is scratch or bad point on the surface of screen, wherein, screen includes mobile phone screen, monitor screen, computer display screen etc., since the size of different kinds of screen is different, thus, worker needs to frequently adjust the focal length of lens of AOI camera, that is, to frequently change the vertical spacing between lens and the screen to be detected.

[0003] The method that worker detects whether there is scratch or bad point on different kinds of screen by using AOI camera in workshop is as follows:

[0004] S1, worker places mobile phone screen directly below the lens of AOI camera, lens shoots the top surface of mobile phone screen to detect whether there is scratch or bad point on mobile phone screen;

[0005] S2, when detecting monitor screen, worker places monitor screen directly below the lens of AOI camera, and then adjusts the height of lens to make lens move upwards, when lens moves upwards to set height, the adjustment of focal length of lens is completed; after adjusting the focal length of lens, worker continues to detect whether there is scratch or bad point on monitor screen by using AOI camera;

[0006] S3, repeat the operation steps of step S2 to detect whether there is scratch or bad point on computer display screen, and then complete the detection of different kinds of screen.

[0007] However, although the existing AOI camera can realize the detection of scratch or bad point of different kinds of screen, in actual operation, it still embodies the following technical defects:

[0008] Among them, from step S1~S3, after replacing a screen to be detected each time, manual rotation of lens is needed to adjust the focal length of lens, and then the focal length is adapted to the screen to be detected; each time frequent adjustment of focal length of lens not only increases the working strength of worker, but also needs a long time to complete the detection of different kinds of screen, thereby reducing the detection efficiency of screen.

[0009] Therefore, a kind of AOI camera of fast focus adjustment is needed, which greatly reduces the working strength of worker and greatly improves the detection efficiency of different kinds of screen. Utility model content

[0010] The utility model discloses a purpose at overcoming prior art's shortcoming, provide a greatly reduce worker's work intensity, greatly improve the detection efficiency of different kinds screen of fast adjustable focal length's AOI camera.

[0011] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0012] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0013] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0014] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0015] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0016] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0017] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0018] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end,

[0019] The utility model discloses a purpose to realize through following technical scheme: a fast adjustable focal length's AOI camera, it includes camera body, the fixed cylinder of fixedly established on the bottom surface of camera body, the rotating installation of fixed cylinder in, the bottom of rotary drum is connected with the outer cylinder body of intercommunication, and the top surface of outer cylinder body and the inner wall of rotary drum form the step surface between, the inner cylinder body of screw connection has in the outer cylinder body, and the upper end of inner cylinder body extends in rotary drum, and the fixed establishment of annular limit board is on the extension end, and annular limit board and step surface are opposite and stand, and the lower end of inner cylinder body extends to the outside of outer cylinder body, and the fixed establishment of lens is on the extension end, ATTACHMENT DESCRIPTION

[0020] Figure 1 For the structure schematic diagram of the utility model,

[0021] Figure 2 ForFigure 1 a schematic view of the sectional structure of the camera body;

[0022] Figure 3 a schematic view of the connection of the clamp, the connecting plate and the L plate;

[0023] Figure 4 a schematic view of the sectional structure of the camera body; Figure 3 a front view of the camera body;

[0024] Figure 5 a schematic view of the structure of the rotating cylinder and the outer cylinder body;

[0025] Figure 6 a schematic view of the structure of the inner cylinder body;

[0026] Figure 7 a schematic view of the annular limiting plate on the inner cylinder body abutting against the step surface;

[0027] Figure 8 a schematic view of the structure of the rotating cylinder and the outer cylinder body;

[0028] in the drawings:

[0029] 1 - camera body, 2 - fixed cylinder, 3 - rotating cylinder, 4 - outer cylinder body, 5 - step surface, 6 - inner cylinder body, 7 - annular limiting plate, 8 - lens, 9 - guide seat, 10 - rod;

[0030] 11 - driving assembly, 12 - driven gear, 13 - clamp, 14 - connecting plate, 15 - L plate, 16 - driving motor, 17 - driving gear;

[0031] 18 - external thread, 19 - limiting ring. DETAILED DESCRIPTION

[0032] The utility model will be further described in connection with the drawings, and the protection scope of the utility model is not limited to the following:

[0033] As Figures 1-6As shown, a kind of AOI camera of fast adjustable focal length, it includes camera body 1, fixedly set on the bottom surface of camera body 1 Fixed cylinder 2, rotatingly installed with rotating cylinder 3 in the fixed cylinder 2, the bottom of rotating cylinder 3 is connected with the outer cylinder body 4 communicated with it, the top surface of outer cylinder body 4 and the inner wall of rotating cylinder 3 form step surface 5, the inner cylinder body 6 is screw connected in the outer cylinder body 4, the upper end of inner cylinder body 6 extends in rotating cylinder 3, and annular limiting plate 7 is fixed on the extending end, annular limiting plate 7 is opposite and stands up with step surface 5, the lower end of inner cylinder body 6 extends to the outside of outer cylinder body 4, and lens 8 is fixed on the extending end;Fixed cylinder 2, rotating cylinder 3, outer cylinder body 4 and inner cylinder body 6 are coaxially arranged.The outer cylindrical surface of the inner cylinder body 6 is fixed with a limiting ring 19.The inner wall of the outer cylinder body 4 is provided with an internal thread in the axial direction, and the outer wall of the inner cylinder body 6 is provided with an external thread 18 in the axial direction.The external thread of the inner cylinder body 6 is screw connected with the internal thread of the outer cylinder body 4.

[0034] The inner wall of the fixed cylinder 2 is fixed with two guide seats 9, and the vertical rod 10 is slidably penetrated in the two guide seats 9, and the two rod 10 are fixed on the top surface of the inner cylinder body 6;Two guide seats 9 are symmetrically arranged about the axis of fixed cylinder 2.

[0035] The driving assembly 11 for driving rotating cylinder 3 to rotate around its own axis is further arranged between fixed cylinder 2 and rotating cylinder 3, and the driving assembly 11 includes driven gear 12, clamp 13, connecting plate 14, L plate 15, driving motor 16, output shaft, driving gear 17, driven gear 12, and the diameter of driving gear 17 is greater than the diameter of driving gear 17.

[0036] The worker in the workshop uses the AOI camera to detect whether there is scratch or bad point on different kinds of screen, which is:

[0037] S1, the worker places the mobile phone screen directly below the lens 8 of the AOI camera, and the lens 8 shoots the top surface of the mobile phone screen to detect whether there is scratch or bad point on the mobile phone screen;

[0038] S2, when the monitor screen is to be detected, the worker places the monitor screen directly below the lens 8 of the AOI camera, and then controls the driving motor 16 of the driving assembly 11 to start, the driving motor 16 drives the driving gear 17 to rotate, the driving gear 17 drives the driven gear 12 to rotate, the driven gear 12 drives the rotating drum 3 to rotate, the rotating drum 3 drives the outer cylinder body 4 to rotate, under the thread cooperation of the inner thread of the outer cylinder body 4 and the outer thread 18 of the inner cylinder body 6, the inner cylinder body 6 moves linearly downward, the inner cylinder body 6 drives the lens 8 to move linearly downward, when the annular limiting plate 7 on the inner cylinder body 6 abuts against the stepped surface 5, as shown in Figure 7 , the worker turns off the driving motor 16, thereby completing the adjustment of the focal length of the lens 8; after adjusting the focal length of the lens 8, the worker continues to detect whether there are scratches or bad points on the monitor screen through the AOI camera;

[0039] S3, when the computer display screen is to be detected, the worker places the computer display screen directly below the lens 8 of the AOI camera, and then controls the driving motor 16 of the driving assembly 11 to start, the driving motor 16 drives the driving gear 17 to rotate in the opposite direction, the driving gear 17 drives the driven gear 12 to rotate in the opposite direction, the driven gear 12 drives the rotating drum 3 to rotate in the opposite direction, the rotating drum 3 drives the outer cylinder body 4 to rotate in the opposite direction, under the thread cooperation, the inner cylinder body 6 moves linearly upward, the inner cylinder body 6 drives the lens 8 to move linearly upward, when the limiting ring 19 abuts against the bottom surface of the rotating drum 3, the worker turns off the driving motor 16, thereby completing the adjustment of the focal length of the lens 8 again; after adjusting the focal length of the lens 8, the worker continues to detect whether there are scratches or bad points on the computer display screen through the AOI camera, thereby completing the detection of different types of screens.

[0040] It can be known from steps S2-S3 that the worker only needs to control the driving motor 16 of the driving assembly 11 to reverse, so as to lower or raise the height of the lens 8, thereby quickly completing the adjustment of the focal length of the lens 8. It can be known that, compared with the existing AOI camera, the worker does not need to manually rotate the lens 8 frequently to complete the adjustment of the focal length of the lens 8, but realizes automatic and rapid adjustment of the focal length of the lens 8, therefore, the AOI camera not only greatly reduces the working strength of the worker, but also realizes the detection of different types of screens in a short time, thereby greatly improving the detection efficiency of the screen.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. An AOI camera with fast adjustable focus, characterized in that: It includes camera body (1), fixed cylinder (2) fixed on the bottom surface of camera body (1), rotatingly installed with rotating cylinder (3) in fixed cylinder (2), the bottom of rotating cylinder (3) is connected with outer cylinder (4) communicated with it, the top surface of outer cylinder (4) and the inner wall of rotating cylinder (3) form step surface (5), the inner wall of outer cylinder (4) is screwed with inner cylinder (6), the upper end of inner cylinder (6) extends in rotating cylinder (3), and the extending end is fixed with annular limiting plate (7), annular limiting plate (7) is opposite to step surface (5) up and down, the lower end of inner cylinder (6) extends downward outside outer cylinder (4), and the extending end is fixed with lens (8); The inner wall of fixed cylinder (2) is fixed with two guide seats (9), two guide seats (9) are slidably penetrated with vertically arranged rod (10), two rod (10) are fixed on the top surface of inner cylinder (6); The drive assembly (11) for driving rotating cylinder (3) to rotate around its own axis is further arranged between fixed cylinder (2) and rotating cylinder (3), drive assembly (11) includes driven gear (12) sleeved on the outside of rotating cylinder (3), clamp (13) sleeved on the outside of fixed cylinder (2), connecting plate (14) fixed on the left end of clamp (13), L plate (15) fixed on the bottom surface of connecting plate (14), drive motor (16) fixed on the bottom surface of L plate (15), the output shaft of drive motor (16) penetrates L plate (15) upward, and the extending end is connected with driving gear (17), driving gear (17) is engaged with driven gear (12). 2.The AOI camera with fast adjustable focal length according to claim 1, wherein: The inner wall of outer cylinder (4) is provided with internal thread along the axial direction, and the outer wall of inner cylinder (6) is provided with external thread (18) along the axial direction, and the external thread of inner cylinder (6) is threadedly connected with the internal thread of outer cylinder (4).

3. The AOI camera with fast adjustable focal length of claim 1, wherein: The outer cylindrical surface of the inner cylinder (6) is fixed with a limiting ring (19).

4. The AOI camera with fast adjustable focal length of claim 1, wherein: The fixed cylinder (2), rotating cylinder (3), outer cylinder (4) and inner cylinder (6) are coaxially arranged.

5. The AOI camera with fast adjustable focal length of claim 1, wherein: The diameter of the driven gear (12) is greater than the diameter of the driving gear (17).

6. The AOI camera with fast adjustable focal length of claim 1, wherein: Two guide seats (9) are symmetrically arranged about the axis of fixed cylinder (2).

Images