CN217845246U

CN217845246U - Levelness adjusting device of vision system

Info

Publication number: CN217845246U
Application number: CN202222041301.1U
Authority: CN
Inventors: 武海龙; 庄玉龙; 何难
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2022-08-04
Filing date: 2022-08-04
Publication date: 2022-11-18
Anticipated expiration: 2032-08-04

Abstract

The utility model belongs to the technical field of visual inspection, and discloses a levelness adjusting device of a visual system, which comprises a detection component, a camera component and an adjusting component, wherein the detection component comprises a horizontally placed correction profiling piece, the correction profiling piece comprises a first detection surface and a second detection surface which are parallel to each other and are arranged at intervals, and the first detection surface and the second detection surface are respectively provided with a first detection mark and a second detection mark; the camera assembly comprises a lens body and a camera, and the camera is used for photographing the first detection mark and the second detection mark to form a contrast picture; the adjusting component comprises an adjusting plate and a leveling mechanism, the adjusting plate is detachably connected to the lens body, and the leveling mechanism adjusts the adjusting plate so that the center point of the first detection mark in the contrast picture coincides with the center point of the second detection mark. The utility model discloses a vision system levelness adjusting device carries out the levelness adjustment to the camera lens based on the contrast picture, and the adjustment precision is high, and adjusting method is simple, does benefit to and promotes product processingquality, reduces the processing cost.

Description

Levelness adjusting device of vision system

Technical Field

The utility model relates to a visual detection technical field especially relates to vision system levelness adjusting device.

Background

The vision system is a machine vision product (i.e. an image pickup device, usually a CCD) which converts a picked-up object into an image signal, transmits the image signal to a special image processing system, and converts the image signal into a digital signal according to information such as pixel distribution, brightness, color and the like; the image processing system performs various calculations on these signals to extract the features of the target, and then controls the operation of the on-site equipment according to the result of the discrimination. On the existing mechanical automatic processing production line, a vision system is often used for detecting products in the processing process. In order to ensure the correctness of the detection result, the lens of the camera needs to be parallel to the workpiece, so that the influence on the pixel distribution and the accuracy of information such as brightness, color and the like is avoided; therefore, for the detection requirement of an automatic production line for horizontally arranging workpieces, the lens of the camera needs to be leveled, so that the levelness meets the detection precision requirement.

The existing vision system usually ensures the levelness through the processing precision and the assembly precision of relevant parts of the vision system, so that the processing cost is correspondingly increased, the adjustment method is complex, but the adjustment precision is insufficient, the levelness still cannot meet the use requirement, and the processing quality of a product is further influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a vision system levelness adjusting device adjusts the levelness of camera lens based on the contrast picture, and the adjustment accuracy is high, and the control method is simple, does benefit to and promotes product processingquality, reduces the processing cost.

To achieve the purpose, the utility model adopts the following technical proposal:

a vision system levelness adjustment apparatus comprising:

the detection assembly comprises a horizontally placed correction profile, the correction profile comprises a first detection surface and a second detection surface which are parallel to each other and arranged at intervals, and a first detection mark and a second detection mark are respectively arranged on the first detection surface and the second detection surface;

the camera assembly comprises a lens body and a camera connected to the lens body, the lens body can correspond to the correction profile, and the camera is configured to photograph the first detection mark and the second detection mark to form a contrast picture;

the adjusting assembly comprises an adjusting plate and a leveling mechanism, the adjusting plate is detachably connected to the lens body, and the leveling mechanism is configured to adjust the adjusting plate to enable the central point of the first detection mark and the central point of the second detection mark in the contrast picture to coincide.

As a preferred structure of the utility model, correct the profiling piece and be transparent tetragonal body, first detection sign with the second detect the sign set up respectively in two relative surfaces on the tetragonal body.

As a preferred structure of the utility model, first detection mark includes the reference circle, the second detects the mark including the contrast circle, the reference circle with the contrast circle is concentric, just first detection mark set up in correct being close to on the profile one side of camera subassembly, the second detect mark set up in correct keeping away from on the profile one side of camera subassembly.

As a preferred structure of the utility model, the adjusting part still includes gimbal mechanism, gimbal mechanism includes stand and mounting panel, the mounting panel can dismantle connect in stand and level set up, the regulating plate is connected the mounting panel.

As a preferred structure of the utility model, leveling mechanism includes:

one end of the adjusting stud is connected with the adjusting plate in a threaded manner;

adjust the swivel nut, adjust swivel nut threaded connection in the mounting panel, and the cover is located adjust the double-screw bolt and keep away from the one end of regulating plate, the tip butt of adjusting the swivel nut the regulating plate.

As a preferred structure of the present invention, the leveling mechanism further includes:

the locking nut is in threaded connection with the adjusting threaded sleeve and can abut against one side of the mounting plate;

and the locking gasket is sleeved on the adjusting stud and can abut against one side of the adjusting threaded sleeve.

As the utility model discloses a preferred structure, leveling mechanism is provided with the multiunit, multiunit leveling mechanism encircles camera lens body interval evenly distributed.

As a preferred structure of the utility model, the adjusting part still includes connecting bolt, the regulating plate is provided with the connecting hole, connecting bolt passes the connecting hole is in order to connect the regulating plate with the camera lens body.

As the utility model discloses a preferred structure, the mounting panel is provided with dodges the hole, the mounting panel laminating is connected the regulating plate, dodge the hole and be configured as dodging connecting bolt.

As a preferred structure of the present invention, the camera module further includes a light source, the light source is connected to the support mechanism and is disposed below the lens body.

The utility model has the advantages that:

the camera of the vision system levelness adjusting device provided by the utility model is used for taking a picture of the first detection mark and the second detection mark to form a contrast picture, and because the first detection surface and the second detection surface are spaced, when the lens body and the camera are parallel to the correction profile, the centers of the first detection mark and the second detection mark in the contrast picture are superposed, and the levelness of the camera component is not required to be adjusted at the moment; if the centers of the first detection mark and the second detection mark in the comparison picture do not coincide, this indicates that the levelness of the camera assembly needs to be adjusted. The levelness of the adjusting plate is adjusted by the leveling mechanism, so that the adjusting plate drives the camera assembly to adjust until the central point of the first detection mark coincides with the central point of the second detection mark. The levelness adjusting process of the camera assembly is simple, the operation is easy, the levelness adjusting requirement of the camera assembly can be met without requiring the processing precision of the detection assembly, the camera assembly and the adjusting assembly, the processing quality of products is improved, and the processing cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a levelness adjusting device for a vision system according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an orthopedic cam provided in an embodiment of the present invention;

fig. 3 is a first schematic diagram of a comparative picture provided by an embodiment of the present invention;

fig. 4 is a second schematic diagram of a comparative picture provided by an embodiment of the present invention;

fig. 5 is a cross-sectional view of a leveling mechanism connecting adjusting plate and a mounting plate according to an embodiment of the present invention;

fig. 6 is an exploded view of a structure of an adjusting plate connected to a lens body according to an embodiment of the present invention.

In the figure:

1. a detection component; 11. straightening the cam; 111. a first detection surface; 1111. a first detection flag; 112. a second detection surface; 1121. a second detection flag;

2. a camera assembly; 21. a lens body; 22. a camera; 23. a light source element;

3. an adjustment assembly; 31. an adjusting plate; 311. connecting holes; 32. a leveling mechanism; 321. adjusting the stud; 322. adjusting a threaded sleeve; 323. locking the nut; 324. a locking washer; 33. a support mechanism; 331. a column; 332. mounting a plate; 3321. avoiding holes; 34. and connecting the bolts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1-6, an embodiment of the present invention provides a device for adjusting the levelness of a vision system, which includes a detection component 1, a camera component 2 and an adjustment component 3. The detection assembly 1 comprises a horizontally placed correction profile 11, the correction profile 11 comprises a first detection surface 111 and a second detection surface 112 which are parallel to each other and are arranged at intervals, and a first detection mark 1111 and a second detection mark 1121 are respectively arranged on the first detection surface 111 and the second detection surface 112. The correction cam 11 is placed on a stage (not shown) for carrying a workpiece, and it is necessary to ensure that the correction cam 11 is located within the range of object distances of the camera assembly 2, and that both the first detection surface 111 and the second detection surface 112 can be photographed. The camera assembly 2 includes a lens body 21 and a camera 22 connected to the lens body 21, the lens body 21 can correspond to the correction cam 11, and the camera 22 is configured to photograph the first detection mark 1111 and the second detection mark 1121 to form a contrast picture. Because the first detection surface 111 and the second detection surface 112 have a distance therebetween, when the lens body 21 and the camera 22 are parallel to the correction cam 11, as shown in fig. 3, the centers of the first detection mark 1111 and the second detection mark 1121 in the comparison picture coincide with each other, that is, the connecting line of the center point of the first detection mark 1111 and the center point of the second detection mark 1121 is perpendicular to the horizontal plane, and at this time, the levelness of the camera assembly 2 does not need to be adjusted; as shown in fig. 4, if the centers of the first detection flag 1111 and the second detection flag 1121 in the comparison picture do not coincide with each other, that is, the connection line between the center point of the first detection flag 1111 and the center point of the second detection flag 1121 is inclined to the horizontal plane, this indicates that the levelness of the camera assembly 2 needs to be adjusted.

The adjustment assembly 3 includes an adjustment plate 31 detachably attached to the lens body 21, and a leveling mechanism 32 configured to adjust a level of the adjustment plate 31 such that a center point of the first detection flag 1111 and a center point of the second detection flag 1121 coincide. The levelness of the adjusting plate 31 is adjusted by the leveling mechanism 32, so that the adjusting plate 31 drives the camera assembly 2 to adjust until the central point of the first detection mark 1111 coincides with the central point of the second detection mark 1121. The levelness adjusting process of the camera component 2 is simple, the operation is easy, the requirements on the processing precision of the detection component 1, the camera component 2 and the adjusting component 3 are not needed, the levelness adjusting requirement of the camera component 2 can be met based on a contrast picture, the processing quality of a product is favorably improved, and the processing cost is reduced.

Preferably, the orthotic profile 11 is a transparent cube, as shown in figure 2; the correction profile 11 can be made of transparent acrylic materials and has enough rigidity, is not easy to deform, and ensures the precision of a detection reference. The first detection mark 1111 and the second detection mark 1121 are respectively disposed on two opposite surfaces of the cube, so that the camera 22 can photograph to form a contrast image for comparison. Specifically, the first detection mark 1111 in the present embodiment includes a reference circle, and the second detection mark 1121 includes a comparison circle, where the reference circle and the comparison circle are concentric and have different diameters, so that it is easy to observe whether the reference circle and the comparison circle are concentric. The first detection mark 1111 is disposed on the side of the rectification profile 11 close to the camera module 2, and the second detection mark 1121 is disposed on the side of the rectification profile 11 away from the camera module 2. In other embodiments, the first detection flag 1111 and the second detection flag 1121 may be configured to have a shape such as a quadrangle, and the levelness determination may be performed by observing whether the centers of the quadrangle and other shapes overlap, which is not limited to this embodiment.

Preferably, the adjusting assembly 3 further includes a bracket mechanism 33, as shown in fig. 1, the bracket mechanism 33 includes a column 331 and a mounting plate 332, the mounting plate 332 is detachably connected to the column 331 and is horizontally disposed, and the adjusting plate 31 is connected to the mounting plate 332. The upright 331 supports the camera module 2 and the adjusting module 3, and the adjusting plate 31 is attached to the mounting plate 332, so that the levelness of the adjusting plate 31 can be adjusted by using the mounting plate 332 as a reference.

Preferably, the leveling mechanism 32 includes an adjusting stud 321 and an adjusting screw 322, as shown in fig. 5; one end of the adjusting stud 321 is screwed to the adjusting plate 31; the inner hole of the adjusting screw sleeve 322 is connected to one end of the adjusting stud 321 far away from the adjusting plate 31, the outer shaft diameter of the adjusting screw sleeve 322 is in threaded connection with the mounting plate 332, and the end of the adjusting screw sleeve 322 abuts against the adjusting plate 31. When the adjusting plate 31 is required to be downwards leveled, the adjusting screw sleeve 322 is screwed, the end part of the adjusting screw sleeve 322 abuts against the adjusting plate 31, and the adjusting plate 31 is pushed downwards; if the downward distance of the adjusting plate 31 is too large, and the adjusting plate 31 needs to be upwards leveled, the adjusting stud 321 is screwed, so that the adjusting stud 321 drives the adjusting plate 31 to upwards move, the adjusting structure is simple, and the operation is convenient.

Further, as shown in fig. 5, the leveling mechanism 32 further includes a lock nut 323 and a lock washer 324; the locking nut 323 is in threaded connection with the adjusting threaded sleeve 322 and can abut against one side of the mounting plate 332 to prevent looseness of the adjusting threaded sleeve 322 and avoid error rotation of the adjusting threaded sleeve 322. The locking washer 324 is sleeved on the adjusting stud 321 and can abut against one side of the adjusting stud 322; the locking washer 324 can limit the adjusting screw sleeve 322 and prevent the adjusting screw sleeve 322 and the adjusting stud 321 from following.

Specifically, as shown in fig. 1, the leveling mechanisms 32 are provided in a plurality of sets, and the leveling mechanisms 32 are uniformly distributed around the lens body 21 at intervals. In this embodiment, the leveling mechanisms 32 are provided with 4 groups, and the 4 groups of leveling mechanisms 32 are uniformly distributed around the lens body 21 at intervals and adjust the adjusting plate 31 from four directions respectively, so as to meet the levelness requirement of the adjusting plate 31, and the adjusting precision is high. In other embodiments, other sets of leveling mechanisms 32 can be provided, and the present embodiment is not limited thereto.

Preferably, the adjusting assembly 3 further includes a connecting bolt 34, as shown in fig. 1 and 6, the adjusting plate 31 is provided with a connecting hole 311, and the connecting bolt 34 passes through the connecting hole 311 to connect the adjusting plate 31 and the lens body 21, so as to realize quick assembly and disassembly of the adjusting plate 31 and the lens body 21. More specifically, the mounting plate 332 is provided with an avoiding hole 3321, as shown in fig. 1, the mounting plate 332 is attached to the connection adjusting plate 31, and the avoiding hole 3321 is used for avoiding the connection bolt 34.

Preferably, the camera assembly 2 further includes a light source 23, and the light source 23 is connected to the holder mechanism 33 and disposed below the lens body 21. The light source element 23 is capable of distinguishing the target information from the background information of the orthotic contour 11 to obtain a high quality, high contrast image.

The utility model discloses visual system levelness adjusting device's application method as follows:

1. the correction contour piece 11 is horizontally placed right below the light source piece 23 and is positioned in the object distance range of the camera component 2;

2. the camera 22 takes a picture of the correction profile 11 to form a contrast picture, checks whether the centers of the first detection mark 1111 and the second detection mark 1121 are overlapped, and adjusts the levelness of the adjusting plate 31 by using the leveling mechanism 32 according to the contrast result of the contrast picture;

3. the camera 22 is used again to photograph the correction profile 11 to form a contrast picture, the contrast picture is checked and compared, and if the centers of the first detection mark 1111 and the second detection mark 1121 are overlapped, the levelness adjustment is completed; if the centers of the first detection flag 1111 and the second detection flag 1121 do not coincide, repeating the step 2 and the step 3 until the centers of the first detection flag 1111 and the second detection flag 1121 coincide, and completing the levelness adjustment.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement or improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A vision system levelness adjustment apparatus, comprising:

the detection assembly (1) comprises a horizontally placed correction profile (11), the correction profile (11) comprises a first detection surface (111) and a second detection surface (112) which are parallel to each other and are arranged at intervals, and a first detection mark (1111) and a second detection mark (1121) are respectively arranged on the first detection surface (111) and the second detection surface (112);

a camera assembly (2) comprising a lens body (21) and a camera (22) connected to the lens body (21), the lens body (21) being able to correspond to the correction cam (11), the camera (22) being configured to take a picture of the first detection marking (1111) and the second detection marking (1121) to form a contrast picture;

an adjustment assembly (3) comprising an adjustment plate (31) and a leveling mechanism (32), the adjustment plate (31) being detachably connected to the lens body (21), the leveling mechanism (32) being configured to adjust the adjustment plate (31) to coincide a center point of the first detection mark (1111) and a center point of the second detection mark (1121) in the contrast picture.

2. The device for adjusting the levelness of a visual system according to claim 1, wherein said corrective cam (11) is a transparent cube, and said first detection mark (1111) and said second detection mark (1121) are respectively provided on two opposite surfaces of said cube.

3. A visual system levelness adjustment device according to any one of claims 1 or 2, wherein said first detection mark (1111) comprises a reference circle, said second detection mark (1121) comprises a reference circle, said reference circle and said reference circle being concentric, and said first detection mark (1111) is provided on the side of said rectifying cam (11) close to said camera assembly (2), and said second detection mark (1121) is provided on the side of said rectifying cam (11) away from said camera assembly (2).

4. The device for adjusting levelness of a visual system according to claim 1, wherein said adjusting assembly (3) further comprises a bracket mechanism (33), said bracket mechanism (33) comprises a vertical post (331) and a mounting plate (332), said mounting plate (332) is detachably connected to said vertical post (331) and horizontally disposed, and said adjusting plate (31) is connected to said mounting plate (332).

5. The vision system levelness adjustment device of claim 4, wherein said leveling mechanism (32) comprises:

an adjusting stud (321), one end of the adjusting stud (321) is connected to the adjusting plate (31) in a threaded mode;

adjust swivel nut (322), adjust swivel nut (322) threaded connection in mounting panel (332), and the cover is located adjust double-screw bolt (321) and keep away from the one end of regulating plate (31), the tip butt of adjusting swivel nut (322) regulating plate (31).

6. The vision system levelness adjustment device of claim 5, wherein said leveling mechanism (32) further comprises:

the locking nut (323) is in threaded connection with the adjusting threaded sleeve (322) and can abut against one side of the mounting plate (332);

and the locking washer (324) is sleeved on the adjusting stud (321), and can abut against one side of the adjusting screw sleeve (322).

7. The device for adjusting levelness of a vision system according to claim 1, wherein said leveling mechanisms (32) are provided in a plurality of sets, said plurality of sets of leveling mechanisms (32) being evenly spaced around said lens body (21).

8. The device for adjusting levelness of a vision system according to claim 4, wherein said adjusting assembly (3) further comprises a connecting bolt (34), said adjusting plate (31) being provided with a connecting hole (311), said connecting bolt (34) passing through said connecting hole (311) to connect said adjusting plate (31) and said lens body (21).

9. The apparatus for adjusting levelness of a vision system according to claim 8, wherein said mounting plate (332) is provided with an avoiding hole (3321), said mounting plate (332) is attached to said adjusting plate (31), said avoiding hole (3321) is configured to avoid said connecting bolt (34).

10. The device for adjusting levelness of a visual system according to claim 4, wherein said camera assembly (2) further comprises a light source member (23), said light source member (23) being connected to said holder mechanism (33) and being disposed below said lens body (21).