CN114390172A - Device for automatically adjusting angle of auxiliary light source of line scanning camera according to thickness of artificial board - Google Patents

Device for automatically adjusting angle of auxiliary light source of line scanning camera according to thickness of artificial board Download PDF

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Publication number
CN114390172A
CN114390172A CN202111656417.XA CN202111656417A CN114390172A CN 114390172 A CN114390172 A CN 114390172A CN 202111656417 A CN202111656417 A CN 202111656417A CN 114390172 A CN114390172 A CN 114390172A
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China
Prior art keywords
light source
auxiliary light
artificial board
angle
thickness
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CN202111656417.XA
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CN114390172B (en
Inventor
苏世宁
王筱东
韦光亮
苏家仪
关宇晟
苏明
张玉国
申智辉
韦潇依
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Guangxi Talentcloud Information Technology Co ltd
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Guangxi Talentcloud Information Technology Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • G03B15/02—Illuminating scene
    • G03B15/03—Combinations of cameras with lighting apparatus; Flash units

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a device for automatically adjusting the angle of an auxiliary light source of a line scanning camera according to the thickness of an artificial board, which comprises an artificial board inspection production line conveying belt, a line scanning camera, a supporting device, an intermediate piece and an auxiliary light source adjusting mechanism, wherein the artificial board inspection production line conveying belt is arranged on the artificial board; the supporting device is used for connecting the intermediate piece; the intermediate piece can move up and down along the supporting device; the middle piece is used for naturally falling to a position where a certain height is kept between the middle piece and the upper surface of a conveying belt of a board inspection production line along the supporting device when the bottom of the middle piece is not contacted with the artificial board; after contacting the artificial board, the bottom of the intermediate piece can slide or roll on the upper surface of the artificial board inspection line, and the intermediate piece is enabled to rise in proportion to the thickness of the artificial board; the auxiliary light source adjusting mechanism comprises an auxiliary light source fixing rotating shaft and an auxiliary light source angle adjusting shaft. The auxiliary light source angle adjusting shaft is driven by the up-and-down movement of the intermediate piece to automatically adjust the angle of the auxiliary light source, so that the area illuminated by the auxiliary light source is always positioned in the scanning area of the line scanning camera.

Description

Device for automatically adjusting angle of auxiliary light source of line scanning camera according to thickness of artificial board
Technical Field
The invention relates to the technical field of artificial board surface defect scanning, in particular to a device for automatically adjusting the angle of an auxiliary light source of a line scanning camera according to the thickness of an artificial board.
Background
The surface defect of the artificial board is one of important indexes for judging the quality of the artificial board, and the method for collecting the surface defect of the artificial board generally comprises the steps of shooting the surface of the artificial board line by a high-speed line scanning camera when the artificial board horizontally moves on a production line, splicing the pictures shot line by line into a large picture, and transmitting the large picture to automatic identification software. Because the line scan camera has a very high shooting speed, an auxiliary light source with high brightness, no stroboflash, no chromatic aberration, and excellent uniformity and consistency is required to illuminate the shooting area, so that the line scan camera can perform scanning shooting. The auxiliary light source of the line scan camera has great influence on the imaging quality of the line scan camera.
In the field of artificial board surface defect scanning, an auxiliary light source of a line scanning camera is generally obliquely installed, and a certain angle is formed between the light source angle and the artificial board, so that more defects can be collected. The traditional auxiliary light source is installed in a fixed angle mode, so that the lighting areas of the auxiliary light source are different for artificial boards with different thicknesses, and the auxiliary light source has the characteristic of high light concentration in order to achieve high brightness, and the lighting areas are limited. If the fixed angle is adjusted, the auxiliary light source can illuminate the scanning area of the artificial board with a specific thickness, and for the artificial boards with other thicknesses, the illuminated area and the scanning area of the line scanning camera are not completely overlapped, so that the picture is darkened, and the defects of the artificial boards are difficult to identify.
On the artificial board inspection production line, artificial boards with different thicknesses can be continuously detected, and the production line is stopped to adjust the light source angle, so that the production line efficiency is extremely low.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device for automatically adjusting the angle of an auxiliary light source of a line scanning camera according to the thickness of an artificial board.
In order to solve the technical problem, the device for automatically adjusting the angle of the auxiliary light source of the line scanning camera according to the thickness of the artificial board comprises an artificial board inspection production line conveying belt, a line scanning camera, a supporting device, an intermediate piece and an auxiliary light source adjusting mechanism;
the artificial board inspection production line conveyor belt is used for conveying artificial boards with different thicknesses;
the line scanning camera is fixedly arranged above the conveying belt of the artificial board inspection production line, and a scanning area is arranged on the conveying belt of the artificial board inspection production line along the rear part of the conveying direction of the artificial board;
the supporting device is used for connecting the intermediate piece; the intermediate piece can move up and down along the supporting device;
the middle piece is used for naturally falling to a position where a certain height is kept between the middle piece and the upper surface of a conveying belt of a board inspection production line along the supporting device when the bottom of the middle piece is not contacted with the artificial board; after contacting the artificial board, the bottom of the intermediate piece can slide or roll on the upper surface of the artificial board inspection line, and the intermediate piece is enabled to rise in proportion to the thickness of the artificial board;
the auxiliary light source adjusting mechanism comprises an auxiliary light source fixing rotating shaft and an auxiliary light source angle adjusting shaft; the auxiliary light source fixing rotating shaft is fixedly connected with the tail part of the auxiliary light source; the auxiliary light source angle adjusting shaft is connected with the side surface of the auxiliary light source and contacts the intermediate piece; the auxiliary light source angle adjusting shaft is fixed and can move up and down along with the middle piece and drive the auxiliary light source to rotate for a certain angle around the fixed rotating shaft, so that an area illuminated by the auxiliary light source is always located in a scanning area of the line scanning camera.
Particularly, the supporting devices are two supporting columns arranged on one side of a conveying belt of the artificial board inspection production line; the support column is provided with a vertical guide rail; the top in the vertical guide rail is connected with a damper; the damper is connected with the intermediate piece.
In particular, the damper is connected to the intermediate piece by means of a connecting slider.
In particular, the intermediate member comprises a cross bar and a vertical bar; the cross rod is connected with the supporting device and contacts the auxiliary light source angle adjusting shaft; more than two vertical rods are arranged; the vertical rod is perpendicular to the cross rod and is fixedly connected with the cross rod; the tail end of the vertical rod is connected with a small wheel; the small wheels can contact the artificial board and can roll on an artificial board inspection line.
Particularly, the radius of the small wheel is larger than the maximum thickness of the artificial board, and the position of the lowest end of the small wheel away from the upper surface of the artificial board inspection production line conveyor belt is slightly smaller than the position of the upper plate surface of the artificial board with the minimum thickness away from the upper surface of the artificial board inspection production line conveyor belt.
Particularly, the middle part of the cross rod is provided with a cross rod bending part; and the bent part of the cross bar is fixedly provided with an auxiliary light source angle adjusting shaft.
In particular, the device also comprises a torsion spring hanger; the torsion spring hanger is arranged on the same side with the supporting device and connected with the intermediate piece.
Particularly, the auxiliary light source angle adjusting shaft is adjusted to a position with a horizontal distance lg from the center point of the auxiliary light source fixed rotating shaft; wherein lg = (Δ h tan (θ))/(Δ h (tan (θ)/tan (β) -1)); the distance between the light source fixed rotating shaft and the upper surface of the thickest artificial board is h, and the thickness difference of the thickest artificial board is delta h; when the thickness of the artificial plate is the maximum, the included angle between the light ray emitting direction and the vertical direction is theta; calculating an included angle beta (angle BAD) between the light emitting direction and the vertical direction when the thickness of the artificial board is minimum if the light source width is w; tan (β) = (h × tan (θ) -w)/(h + Δ h).
A method for automatically adjusting the angle of an auxiliary light source of a line scanning camera according to the thickness of an artificial board by using the device comprises the following steps:
(1) the artificial board moves forwards on the artificial board inspection production line conveyor belt and contacts the bottom of the intermediate piece;
(2) the intermediate piece is lifted, so that the intermediate piece moves upwards along the supporting device;
(3) the auxiliary light source angle adjusting shaft in contact with the intermediate piece also moves upwards to drive the auxiliary light source to rotate around the auxiliary light source fixing rotating shaft, so that the angle of the auxiliary light source is adjusted; according to different thicknesses of the artificial boards, the lifted distance of the intermediate piece is different, the angles of the auxiliary light sources are also different, and the positions illuminated by the auxiliary light sources after the angles of the auxiliary light sources are adjusted are always positioned in the shooting area of the line scanning camera;
(4) the artificial board continues to move forwards until the angle of the auxiliary light source is basically stable;
(5) the artificial board enters a shooting area of the line scanning camera, and the line scanning camera starts shooting;
(6) the artificial board leaves the shooting area of the line scan camera, and the line scan camera stops shooting;
(7) the intermediate piece is suspended, and naturally falls to a certain height from the upper surface of the conveying belt of the artificial board inspection production line along the supporting device;
(8) and (4) the next artificial board arrives, and the process is restarted from the step (1).
Compared with the prior art, the invention has the beneficial effects that:
the invention utilizes the power of the artificial board inspection line, the middleware is raised to a certain height in proportion to the thickness of the artificial board according to the thickness of different artificial boards, and the auxiliary light source angle adjusting shaft is driven to automatically adjust the angle of the auxiliary light source, so that the area illuminated by the auxiliary light source is always positioned in the scanning area of the line scanning camera, and the imaging quality is improved. The invention uses mechanical structure, the structure is simple and reliable; the power is provided by the movement of the artificial board, and an additional power source is not required to be added; the light source angle adjusting shaft can be adjusted according to the relative installation positions of the line scanning camera and the light source, and the application range is wide.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a side view of a structure according to a first embodiment of the present invention;
FIG. 2 is a top view of a structure according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of an optical path of an auxiliary light source according to a first embodiment of the present invention;
FIG. 4 is a top view of a second embodiment of the present invention;
fig. 5 is a structural side view of a second embodiment of the present invention.
In the figure, 1. a support column; 2. the auxiliary light source fixes the rotating shaft; 3. an auxiliary light source; 4. an auxiliary light source angle adjusting shaft; 5. a cross bar; 6. a vertical rod; 7. a small wheel; 8. artificial boards; 9. a conveying belt of a production line for checking the artificial boards; 10. a line scan camera; 11. a torsion spring hanger; 12. connecting the sliding block; 13. a crossbar bending portion.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
It is to be understood that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the generic and descriptive sense only and not for purposes of limitation, as the term is used in the generic and descriptive sense, and not for purposes of limitation, unless otherwise specified or implied, and the specific reference to a device or element is intended to be a reference to a particular element, structure, or component. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific cases,
example one
As shown in fig. 1 and fig. 2, the apparatus for automatically adjusting the angle of the auxiliary light source of the line scanning camera according to the thickness of the artificial board of the embodiment includes a conveying belt 9 of an artificial board inspection line, a line scanning camera 10, a supporting device, an intermediate member, and an auxiliary light source adjusting mechanism.
The artificial board inspection production line conveying belt 9 is used for conveying artificial boards 8 with different thicknesses.
And the line scanning camera 10 is fixedly arranged above the artificial board inspection production line conveying belt 9, and a scanning area is arranged on the artificial board inspection production line conveying belt 9 and at the rear part of the artificial board 8 in the conveying direction.
And the supporting device is used for connecting the intermediate piece. The intermediate piece can be moved up and down along the support means. The supporting device is two supporting columns 1 arranged on one side of a conveying belt 9 of the artificial board inspection production line. Vertical guide rails are arranged on the supporting columns 1. The top in the vertical guide rail is connected with a damper. The damper is connected with the intermediate piece. The damper is connected to the intermediate piece by a connecting slider 12.
The intermediate piece is used for naturally falling to a position with the upper surface of a conveying belt 9 of an artificial board inspection production line along the supporting device to keep a certain height when the bottom of the intermediate piece is not contacted with the artificial board 8; after contacting the artificial board 8, the bottom of the middle piece can slide or roll on the upper surface of the artificial board inspection line, and the middle piece is enabled to rise in proportion to the thickness of the artificial board 8. The intermediate piece comprises a cross bar 5 and a vertical bar 6. The cross bar 5 is connected with the supporting device and contacts the auxiliary light source angle adjusting shaft 4. The vertical rods 6 of the present embodiment are four. The vertical rod 6 is vertically connected with the cross rod 5 and fixedly connected with the cross rod 5. The end of the vertical rod 6 is connected with a small wheel 7. The small wheels 7 can contact the artificial board 8 and can roll on the artificial board inspection line. The radius of the small wheel 7 is larger than the maximum thickness of the artificial board 8, and the position of the lowest end of the small wheel 7 away from the upper surface of the artificial board inspection production line conveying belt 9 is slightly smaller than the position of the upper plate surface of the artificial board 8 with the minimum thickness away from the upper surface of the artificial board inspection production line conveying belt 9. The cross bar 5 is provided at its middle with a cross bar bending portion 13. The beam bending portion 13 fixedly mounts the auxiliary light source angle adjusting shaft 4. Since the auxiliary light source 3 must illuminate the entire board, the vertical bar 6 is in contact with the surface of the artificial board 8, and the cross bar 5 cannot block the view of the line scan camera 10, the position in contact with the light source is a curved position to allow the line scan camera 10 to work better.
The auxiliary light source adjusting mechanism comprises an auxiliary light source fixing rotating shaft 2 and an auxiliary light source angle adjusting shaft 4. The auxiliary light source fixing rotating shaft 2 is fixedly connected with the tail part of the auxiliary light source 3. The auxiliary light source angle adjusting shaft 4 is connected to a side surface of the auxiliary light source 3, and the auxiliary light source angle adjusting shaft 4 contacts the intermediate member. The auxiliary light source angle adjusting shaft 4 is fixed and can move up and down along with the middle piece and drive the auxiliary light source 3 to rotate for a certain angle around the fixed rotating shaft, so that the area illuminated by the auxiliary light source 3 is always positioned in the scanning area of the line scanning camera 10.
The method for automatically adjusting the angle of the auxiliary light source of the line scanning camera according to the thickness of the artificial board by using the device comprises the following steps:
(1) the artificial board 8 moves forwards on the artificial board inspection production line conveying belt 9 and contacts the first vertical rod 6, and the small wheel 7 on the first vertical rod 6 contacts the upper surface of the artificial board 8 and rolls on the artificial board 8, so that the artificial board 8 can be prevented from being damaged.
(2) The first vertical bar 6 is lifted up so that one end of the cross bar 5 moves up along the supporting means.
(3) The auxiliary light source angle adjusting shaft 4 contacted with the cross rod 5 also moves upwards to drive the auxiliary light source 3 to rotate around the auxiliary light source fixing rotating shaft 2, so that the angle of the auxiliary light source 3 is adjusted; according to the difference of the thickness of the artificial board 8, the distance for lifting the middle piece is different, and the angle of the auxiliary light source 3 is also different, but the position illuminated by the auxiliary light source 3 after the angle of the auxiliary light source 3 is adjusted is always positioned in the shooting area of the line scanning camera 10.
(4) The artificial board 8 continues to move forwards, and the angle of the auxiliary light source 3 is basically stable after the second vertical rod 6 contacts the artificial board 8 and is lifted upwards along with the contact of the second vertical rod 6 on the artificial board 8; even if the artificial board 8 contacts the third vertical rod 6 and the fourth vertical rod 6, the artificial board 8 only slightly contacts the third vertical rod 6 or the fourth vertical rod 6 because the four vertical rods 6 are at the same height, and the stability of the angle of the light source is not affected.
(5) The artificial board 8 enters the shooting area of the line scan camera 10, and the line scan camera 10 starts shooting.
(6) The artificial board 8 leaves the shooting area of the line scan camera 10 and the line scan camera 10 stops shooting.
(7) The vertical rod 6 is suspended, and the vertical rod 6 naturally falls along the supporting device to a certain height from the upper surface of the artificial board inspection production line conveyor belt 9;
(8) and (4) restarting from the step (1) when the next artificial board 8 arrives.
As shown in fig. 3, the derivation process of calculating the installation position of the auxiliary light source angle adjustment axis according to the installation height of the auxiliary light source fixed rotation axis and the data such as the maximum thickness difference of the artificial board.
The point A is an auxiliary light source fixed rotating shaft, the point G is an auxiliary light source angle adjusting shaft, the point BD is the upper surface of the thinnest artificial board, the point EC is the upper surface of the thickest artificial board, the point ED is the difference between the maximum thickness and the minimum thickness of the artificial board, and the points B, C are respectively the middle positions where light rays emitted by the auxiliary light source contact the artificial board. To ensure that the auxiliary light source always falls on the line sweep camera's capture area, the horizontal distance of B, C cannot be greater than the auxiliary light source width.
The position of the auxiliary light source angle adjusting shaft G is located at the position where the distance of HG is equal to the distance of ED (namely the maximum thickness difference of the artificial board) when the thickness of the artificial board is minimum, namely the position where the maximum height of the auxiliary light source lifted is equal to the maximum thickness difference of the board.
The fixed known quantities are: the distance h = l between the auxiliary light source fixed rotating shaft and the upper surface of the thickest artificial boardAEMaximum artificial board thickness difference Δ h = lEDWhen the thickness of the artificial plate is the maximum, an included angle theta = & lt CAD between the light ray emitting direction and the vertical direction, and the width of the auxiliary light source is w.
Then, when the thickness of the artificial board is minimum, the included angle beta (angle BAD) between the light ray emitting direction and the vertical direction can be calculated:
wherein: tan (β) = (h × tan (θ) -w)/(h + Δ h);
then, it can be calculated that, when the thickness of the plate is minimum, the horizontal distance between the angle adjustment shaft of the auxiliary light source and the central point of the fixed rotating shaft is:
lg = (Δh *Δh * tan(θ))/( Δh *(tan(θ)/tan(β) -1))；
namely, in the specific implementation, the thickness of the plate is minimized, the angle adjusting shaft of the auxiliary light source is adjusted to the position with the horizontal distance lg from the central point of the fixed rotating shaft,
example two
As shown in fig. 4 and 5, the structure and the angle adjustment method of the present embodiment are the same, the only difference is that the present embodiment further includes a torsion spring hanger 11. The torsion spring hanger 11 is arranged on the same side as the supporting device and is connected with the cross rod 5. The arrangement of the torsion spring hanger 11 can offset the gravity of the cross rod 5, the vertical rod 6 and the auxiliary light source 3, so that the auxiliary light source adjusting mechanism can better adjust the irradiation angle of the auxiliary light source 3.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes or modifications may be made by the patentees within the scope of the appended claims, and within the scope of the invention, as long as they do not exceed the scope of the invention described in the claims. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts of the present invention. It should be noted that there are no specific structures but a few objective structures due to the limited character expressions, and that those skilled in the art may make various improvements, decorations or changes without departing from the principle of the invention or may combine the above technical features in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.

Claims (9)

1. The utility model provides a device of camera auxiliary light source angle is swept to automatic adjustment line according to wood-based plate thickness which characterized in that: the artificial board inspection production line comprises an artificial board inspection production line conveying belt, a line scanning camera, a supporting device, an intermediate piece and an auxiliary light source adjusting mechanism;
the artificial board inspection production line conveyor belt is used for conveying artificial boards with different thicknesses;
the line scanning camera is fixedly arranged above the conveying belt of the artificial board inspection production line, and a scanning area is arranged on the conveying belt of the artificial board inspection production line along the rear part of the conveying direction of the artificial board;
the supporting device is used for connecting the intermediate piece; the intermediate piece can move up and down along the supporting device;
the middle piece is used for naturally falling to a position where a certain height is kept between the middle piece and the upper surface of a conveying belt of a board inspection production line along the supporting device when the bottom of the middle piece is not contacted with the artificial board; after contacting the artificial board, the bottom of the intermediate piece can slide or roll on the upper surface of the artificial board inspection line, and the intermediate piece is enabled to rise in proportion to the thickness of the artificial board;
the auxiliary light source adjusting mechanism comprises an auxiliary light source fixing rotating shaft and an auxiliary light source angle adjusting shaft; the auxiliary light source fixing rotating shaft is fixedly connected with the tail part of the auxiliary light source; the auxiliary light source angle adjusting shaft is connected with the side surface of the auxiliary light source and contacts the intermediate piece; the auxiliary light source angle adjusting shaft is fixed and can move up and down along with the middle piece and drive the auxiliary light source to rotate for a certain angle around the fixed rotating shaft, so that an area illuminated by the auxiliary light source is always located in a scanning area of the line scanning camera.
2. The apparatus of claim 1, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the supporting devices are two supporting columns arranged on one side of a conveyor belt of the artificial board inspection production line; the support column is provided with a vertical guide rail; the top in the vertical guide rail is connected with a damper; the damper is connected with the intermediate piece.
3. The apparatus of claim 2, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the damper is connected with the intermediate piece through the connecting sliding block.
4. The apparatus of claim 1, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the middle piece comprises a cross rod and a vertical rod; the cross rod is connected with the supporting device and contacts the auxiliary light source angle adjusting shaft; more than two vertical rods are arranged; the vertical rod is perpendicular to the cross rod and is fixedly connected with the cross rod; the tail end of the vertical rod is connected with a small wheel; the small wheels can contact the artificial board and can roll on an artificial board inspection line.
5. The apparatus of claim 4, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the radius of the small wheel is larger than the maximum thickness of the artificial board, and the position of the lowest end of the small wheel, away from the upper surface of the artificial board inspection line conveyor belt, is slightly smaller than the position of the upper surface of the artificial board with the minimum thickness, away from the artificial board inspection line conveyor belt.
6. The apparatus of claim 4, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the middle part of the cross rod is provided with a cross rod bending part; and the bent part of the cross bar is fixedly provided with an auxiliary light source angle adjusting shaft.
7. The apparatus of claim 1, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the device also comprises a torsion spring hanger; the torsion spring hanger is arranged on the same side with the supporting device and connected with the intermediate piece.
8. The apparatus of claim 1, wherein the angle of the auxiliary light source of the line scan camera is automatically adjusted according to the thickness of the artificial board, and the apparatus further comprises: the auxiliary light source angle adjusting shaft is adjusted to a position which is horizontally away from the central point of the auxiliary light source fixed rotating shaft by lg; wherein lg = (Δ h tan (θ))/(Δ h (tan (θ)/tan (β) -1)); the distance between the light source fixed rotating shaft and the upper surface of the thickest artificial board is h, and the thickness difference of the thickest artificial board is delta h; when the thickness of the artificial plate is the maximum, the included angle between the light ray emitting direction and the vertical direction is theta; calculating an included angle beta (angle BAD) between the light emitting direction and the vertical direction when the thickness of the artificial board is minimum if the light source width is w; tan (β) = (h × tan (θ) -w)/(h + Δ h).
9. A method for automatically adjusting the angle of an auxiliary light source of a line scan camera according to the thickness of an artificial board by using the device of any of claims 1 to 7, comprising the following steps:
(1) the artificial board moves forwards on the artificial board inspection production line conveyor belt and contacts the bottom of the intermediate piece;
(2) the intermediate piece is lifted, so that the intermediate piece moves upwards along the supporting device;
(3) the auxiliary light source angle adjusting shaft in contact with the intermediate piece also moves upwards to drive the auxiliary light source to rotate around the auxiliary light source fixing rotating shaft, so that the angle of the auxiliary light source is adjusted; according to different thicknesses of the artificial boards, the lifted distance of the intermediate piece is different, the angles of the auxiliary light sources are also different, and the positions illuminated by the auxiliary light sources after the angles of the auxiliary light sources are adjusted are always positioned in the shooting area of the line scanning camera;
(4) the artificial board continues to move forwards until the angle of the auxiliary light source is basically stable;
(5) the artificial board enters a shooting area of the line scanning camera, and the line scanning camera starts shooting;
(6) the artificial board leaves the shooting area of the line scan camera, and the line scan camera stops shooting;
(7) the intermediate piece is suspended, and naturally falls to a certain height from the upper surface of the conveying belt of the artificial board inspection production line along the supporting device;
(8) and (4) the next artificial board arrives, and the process is restarted from the step (1).
CN202111656417.XA 2021-12-31 2021-12-31 Device for automatically adjusting angle of auxiliary light source of line scanning camera according to thickness of artificial board Active CN114390172B (en)

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