Visual light source automatic adjusting device and visual identification system

Abstract

The utility model provides a visual light source automatic adjusting device and a visual identification system, and the visual light source automatic adjusting device comprises a base which is used for installing a visual collection module with a visual collection axis; the linear moving mechanism comprises a moving seat and a first driver, and the moving seat is movably arranged on the base along the visual acquisition axis; the two light supplementing modules are rotatably arranged on the movable base and symmetrically distributed on the two sides of the visual collection axis, and the projection light rays of the two light supplementing modules intersect on the visual collection axis to form a focusing area; the angle adjusting mechanism comprises a linkage assembly and a second driver, and the linkage assembly converts output of the second driver into symmetrical reverse rotation of the two light supplementing modules; wherein the position of the focus region on the visual acquisition axis is adjusted by at least one of the linear movement mechanism and the angle adjustment mechanism. According to the visual light source automatic adjusting device, the light source can be automatically adjusted, the adjustment is easier, and the stability is better.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of visual identification, and more particularly relates to a visual light source automatic adjusting device and a visual identification system. BACKGROUND

[0002] In the field of intelligent production equipment, an industrial camera is often used to take a visual photograph of a product to obtain a product position coordinate. However, when the product is changed, the visual camera needs to be refocused due to the difference in product size (for example, the height size). Since the camera can be automatically focused through a software system, the corresponding light source often needs to be manually adjusted to adjust the locking position of the light source to adjust the angle or relative height of the light source, so that the position of the light source on the product is exactly near the focal length, thereby improving the visual imaging effect of the industrial camera photographing. This manual adjustment of the light source angle position is time-consuming and laborious, and has poor stability. CONTENT OF THE UTILITY MODEL

[0003] The embodiment of the application provides a visual light source automatic adjusting device which can automatically adjust the light source, is more relaxed to adjust, and has better stability.

[0004] The technical scheme adopted by the embodiment of the application is as follows: a visual light source automatic adjusting device is provided, which comprises:

[0005] a base for mounting a visual acquisition module, the visual acquisition module having a visual acquisition axis facing a measured object;

[0006] a linear movement mechanism comprising a movement seat and a first driver, the movement seat being movably arranged on the base along the visual acquisition axis and being driven by the first driver;

[0007] two light supplement modules rotatably arranged on the movement seat and symmetrically distributed on both sides of the visual acquisition axis, the projection light rays of the two light supplement modules intersecting on the visual acquisition axis to form a focusing area; and

[0008] an angle adjusting mechanism comprising a linkage assembly and a second driver, the second driver driving the linkage assembly, the linkage assembly being connected to the two light supplement modules and converting the output of the second driver into symmetrical and reverse rotation of the two light supplement modules.

[0009] At least one of the linear movement mechanism and the angle adjusting mechanism is used to adjust the two light supplement modules to change the position of the focusing area on the visual acquisition axis.

[0010] Further, the linkage assembly comprises a gear set, the gear set comprises two first gears, one of the first gears is connected to one of the light compensation modules, the two first gears are synchronously and reversely rotated by the gear set driven by the second driver.

[0011] Further, the gear set further comprises a driving gear and a transition gear, the transition gear is engaged with the driving gear, one of the first gears is engaged with the transition gear, the other of the first gears is engaged with the driving gear, the second driver drives the driving gear to rotate.

[0012] Further, the moving seat comprises a first plate body, a second plate body and a plurality of struts, the first plate body and the second plate body are oppositely arranged, the plurality of struts are arranged between the first plate body and the second plate body, the light compensation modules are arranged on a side of the first plate body away from the second plate body, the gear set is arranged between the first plate body and the second plate body, the first gears are rotationally connected to the first plate body, the second driver is arranged on a side of the second plate body away from the first plate body.

[0013] Further, the linear moving mechanism further comprises a rack and a second gear, one end of the rack is connected to the moving seat and is arranged parallel to the visual acquisition axis, the second gear is engaged with the rack, the first driver is arranged on the base and is connected to drive the second gear to rotate.

[0014] Further, the linear moving mechanism further comprises a limiting wheel, the limiting wheel is rotationally arranged on the base, a wheel surface of the limiting wheel is in rolling fit with a side surface of the rack, a rotation axis of the limiting wheel is perpendicular to an extension direction of the rack.

[0015] Further, the angle adjusting mechanism further comprises an angle indicating assembly, the angle indicating assembly comprises a protractor and an angle pointer, the protractor is arc-shaped and is arranged on the moving seat, a center of the arc-shaped protractor is located on a rotation axis of the light compensation modules, the angle pointer is arranged on the light compensation modules.

[0016] Further, the base has a through opening, the moving seat is located in the opening, two sides of the moving seat are in sliding connection with the base.

[0017] Further, the visual light source automatic adjusting device further comprises a linear scale, the linear scale is arranged on one end of the base on which the visual acquisition module is mounted, a length direction of the linear scale is parallel to the visual acquisition axis.

[0018] The embodiment of the present application also provides a visual identification system, comprising a visual acquisition module and the visual light source automatic adjustment device according to any one of the above, wherein the visual acquisition module is installed on the base and has a visual acquisition axis towards the measured object.

[0019] The visual light source automatic adjustment device provided by the embodiment of the present application has the beneficial effects that in the embodiment of the present application, the base fixes the visual acquisition module, the visual acquisition axis of which points to the measured object, thereby providing a reference for the system; the moving seat of the linear movement mechanism is installed on the base along the axis and is driven by the first driver, and the linear displacement of the moving seat can be used to accurately adjust the front and back positions of the light compensation module along the axis, thereby adapting to different product height requirements. The two light compensation modules are symmetrically distributed on the two sides of the axis, the second driver of the angle adjustment mechanism drives the linkage assembly, so that the two light compensation modules are synchronously and symmetrically rotated in reverse, thereby dynamically adjusting the intersection angle of the projected light, and accurately controlling the position of the focusing area on the axis. The linear movement and the angle adjustment can be used independently or jointly, the camera automatic focusing position can be quickly matched, manual intervention is not required, the debugging efficiency during product change is significantly improved, the light source is always focused near the imaging focus point, the imaging stability and reliability are greatly improved, and the quality fluctuation caused by human error is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0021] Figure 1 The three-dimensional structure schematic diagram of the visual light source automatic adjustment device provided by the embodiment of the present application is shown in the figure.

[0022] Figure 2 The exploded view of the visual light source automatic adjustment device provided by the embodiment of the present application is shown in the figure.

[0023] Figure 3 The assembly structure diagram of the light compensation module and the angle adjustment mechanism provided by the embodiment of the present application is shown in the figure.

[0024] Figure 4 The exploded view of the light compensation module and the angle adjustment mechanism provided by the embodiment of the present application is shown in the figure.

[0025] Figure 5 The motion schematic diagram of the linkage assembly provided by the embodiment of the present application is shown in the figure.

[0026] Figure 6 The structure schematic diagram of the linear movement mechanism provided by the embodiment of the present application is shown in the figure.

[0027] Figure 7 The front and back contrast diagrams of the visual light source automatic adjusting device provided by the embodiment of the present application adjust the position of the focusing area.

[0028] In the drawings, various reference signs refer to:

[0029] 1, base; 11, opening;

[0030] 2, linear movement mechanism; 21, moving seat; 211, first plate body; 212, second plate body; 213, support column; 22, first driver; 23, rack; 24, second gear; 25, limit wheel;

[0031] 3, light supplement module; 31, focusing area;

[0032] 4, angle adjusting mechanism; 41, linkage assembly; 411, driving gear; 412, transition gear; 413, first gear; 42, second driver; 43, angle indicating assembly; 431, protractor; 432, angle pointer;

[0033] 5, linear scale;

[0034] 6, visual acquisition module; 61, visual acquisition axis. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0036] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0037] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0038] In addition, the terms "first", "second", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Thus, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0039] Referring to Figure 1 , the visual light source automatic adjustment device provided by the embodiment of the present application will be described. The visual light source automatic adjustment device provided by the embodiment of the present application comprises a base 1, a linear movement mechanism 2, two light supplement modules 3 and an angle adjustment mechanism 4.

[0040] Referring to Figure 1 and Figure 2 , the base 1 is used for mounting a visual acquisition module 6, and the visual acquisition module 6 has a visual acquisition axis 61 facing the measured object.

[0041] The base 1 can be a metal frame structure, and the visual acquisition module 6 (such as an industrial camera and a lens assembly) is fixed on the base 1 by bolts. The visual acquisition module 6 is a component capable of image acquisition or data acquisition of the measured object, and has a visual acquisition axis 61 facing the measured object. The axis is the main direction of information acquisition of the visual acquisition module 6. For example, in some industrial detection scenes, the visual acquisition module 6 can be an industrial camera, which is used to shoot workpieces or products to identify the positions of the workpieces or products, and then to grasp and unload the workpieces.

[0042] The visual acquisition axis 61 can be set in an up-down direction, a left-right direction, a front-rear direction or an inclined direction according to different requirements, and can be horizontal or not. In the embodiment, the visual acquisition axis 61 is set in an up-down direction.

[0043] Referring to Figure 1 and Figure 2 , the linear movement mechanism 2 comprises a moving seat 21 and a first driver 22, and the moving seat 21 is movably arranged on the base 1 along the visual acquisition axis 61 and is driven by the first driver 22.

[0044] The moving seat 21 is a component that can move along the direction of the visual acquisition axis 61. The moving seat 21 is arranged on the base 1 and can move on the base 1. The moving seat 21 and the base 1 can be connected by a slide rail, and the length direction of the slide rail is parallel to the visual acquisition axis 61.

[0045] The first driver 22 is a device for powering the movement of the moving seat 21. When it is necessary to adjust the distance between the visual acquisition module 6 and the measured object, the moving seat 21 can be driven by the first driver 22 to realize the movement of the moving seat 21 and other components (such as the subsequent light supplement module 3, etc.) installed on the moving seat 21 along the direction of the visual acquisition axis 61.

[0046] Specifically, the first driver 22 can be a linear motor, which drives the moving seat 21 to move forward and backward along the visual acquisition axis 61 through the operation of the motor. Alternatively, the first driver 22 is a screw nut mechanism, and the nut is connected with the moving seat 21. Alternatively, the first driver 22 is a gear and rack 23 mechanism, and the rack 23 is connected with the moving seat 21.

[0047] Referring to Figure 1 and Figure 2 , the two light supplement modules 3 are rotatably arranged on the moving seat 21 and symmetrically distributed on both sides of the visual acquisition axis 61, and the projected light rays of the two light supplement modules 3 intersect on the visual acquisition axis 61 to form a focusing area 31.

[0048] The light supplement module 3 is a component capable of emitting light for supplementing illumination. The light supplement module 3 can include a plurality of LED lamp beads arranged in a specific shape, such as a circle or a square, to achieve uniform light projection. The number of LED lamp beads in each light supplement module 3 can be determined according to actual needs. For example, in some scenes with higher requirements for illumination intensity, each light supplement module 3 can contain 50 high-brightness LED lamp beads.

[0049] The two light supplement modules 3 are respectively installed on both sides of the moving seat 21 and connected with the moving seat 21 through a rotating shaft to ensure the stability of the light supplement module 3 during rotation. The connecting part of the light supplement module 3 and the moving seat 21 is designed with a bearing to reduce the friction during rotation, so that the light supplement module 3 can rotate flexibly.

[0050] Referring to Figure 1 , Figure 2 and Figure 7 , the two light supplement modules 3 are symmetrically distributed on both sides of the visual acquisition axis 61, and when they are turned on, the light emitted by each of them intersects on the visual acquisition axis 61, and the intersection area is the focusing area 31. In the focusing area 31, the light intensity is enhanced and the distribution is more uniform, which can effectively improve the illumination effect of the surface of the measured object and provide clearer image acquisition conditions for the visual acquisition module 6.

[0051] The angle adjusting mechanism 4 includes a linkage assembly 41 and a second driver 42, the second driver 42 drives the linkage assembly 41, the linkage assembly 41 connects the two light supplement modules 3 and converts the output of the second driver 42 into the symmetric and reverse rotation of the two light supplement modules 3.

[0052] The linkage assembly 41 transmits the power of the second driver 42 and converts it into the rotating action of the two light compensation modules 3, so as to realize the symmetrical reverse rotation of the two light compensation modules 3, thereby changing the position of the focusing area 31 on the visual acquisition axis 61, and further adapting to different sizes of the measured object.

[0053] For example, in some embodiments, the linkage assembly 41 comprises two gears of the same specification, the two gears are connected with the rotating shafts of the two light compensation modules 3 respectively, the two gears are engaged with each other, and one of the gears is connected with the output shaft of the second driver 42. When the second driver 42 works, the output shaft drives the gear connected therewith to rotate, and through the engagement between the gears, the other gear is driven to rotate reversely, thereby realizing the symmetrical reverse rotation of the two light compensation modules 3, and further accurately controlling the rotating angle of the two light compensation modules 3.

[0054] The position of the focusing area 31 on the visual acquisition axis 61 is changed by adjusting the two light compensation modules 3 through at least one of the linear movement mechanism 2 and the angle adjustment mechanism 4.

[0055] That is, in the actual working process, when the position of the focusing area 31 on the visual acquisition axis 61 needs to be adjusted, at least one of the linear movement mechanism 2 and the angle adjustment mechanism 4 can be used to achieve the adjustment.

[0056] When only the linear movement mechanism 2 is used, the first driver 22 controls the movement of the movement seat 21 along the visual acquisition axis 61, thereby driving the two light compensation modules 3 to move as a whole, so that the position of the focusing area 31 on the axis changes.

[0057] When only the angle adjustment mechanism 4 is used, the second driver 42 drives the linkage assembly 41 to rotate the two light compensation modules 3, changes the angle of light projection, and further adjusts the position of the focusing area 31 on the visual acquisition axis 61.

[0058] Of course, the linear movement mechanism 2 and the angle adjustment mechanism 4 can also be used simultaneously, and the actions of the two mechanisms are combined to realize more flexible and accurate adjustment of the position of the focusing area 31. For example, the linear movement mechanism 2 is used to roughly move the focusing area 31 to the vicinity of the target position, and then the angle adjustment mechanism 4 is used for fine adjustment, so as to realize more accurate and flexible control of the position of the focusing area 31, ensure that the focusing area 31 can accurately cover the part of the measured object that needs to be acquired, provide the best lighting conditions for the visual acquisition module 6, and thereby improve the quality and accuracy of visual acquisition.

[0059] In summary, the visual light source automatic adjusting device of the embodiment of the application realizes effective adjustment of the position of the focusing area 31 through the cooperation of the linear movement mechanism 2 and the angle adjusting mechanism 4, and meets the light illumination requirements of visual collection in different scenes.

[0060] Further, the linkage assembly 41 comprises a gear set, the gear set comprises two first gears 413, one first gear 413 is connected to one light supplement module 3, and the two first gears 413 are synchronously and reversely rotated by the gear set driven by the second driver 42.

[0061] Referring to Figure 3 , Figure 4 and Figure 5 , the linkage assembly 41 adopts a gear set mechanical structure. The gear set is a transmission component composed of multiple gears meshing with each other, which plays a role of transmitting power and changing the direction of movement in the whole device, and can transmit the power of the second driver 42 to the light supplement module 3 and make the light supplement module 3 move in a specific way.

[0062] The gear set comprises two first gears 413, and each first gear 413 is connected to one light supplement module 3. The first gear 413 and the light supplement module 3 can be connected through a shaft, that is, the first gear 413 is installed on the rotating shaft of the light supplement module 3, so that the rotation of the first gear 413 can drive the rotation of the light supplement module 3.

[0063] The second driver 42 (such as a servo motor) provides a power source, and the output shaft of the second driver 42 is connected to a certain gear in the gear set (this gear is not necessarily the first gear 413, but can be other intermediate gears). When the second driver 42 starts, the output shaft thereof rotates to drive the rotation of the gear connected thereto. Since the gears in the gear set are meshed with each other, the power is transmitted between the gears in sequence. In this process, the two first gears 413 connected to the light supplement module 3 will synchronously and reversely rotate due to the transmission of the gear set. That is, when the first gear 413 rotates clockwise by a certain angle, the other first gear 413 will simultaneously rotate counterclockwise by the same angle under the action of the gear set. This synchronous and reverse rotation can ensure that the two light supplement modules 3 change the angle in a symmetrical manner, and further make the focusing area 31 formed by the intersection of the light rays projected by the two light supplement modules 3 move or change the position on the visual collection axis 61 in the expected manner, meeting the requirements of the device for adjusting the visual light source.

[0064] For example, in actual work, when the second driver 42 receives an instruction from the control system to increase the distance between the focusing area 31 and the visual acquisition module 6, the second driver 42 drives the gear set so that the two first gears 413 connected with the light compensation module 3 rotate synchronously in the opposite direction, and the two light compensation modules 3 rotate outward, thereby changing the light projection angle and moving the focusing area 31 away from the visual acquisition module 6.

[0065] With reference to Figure 3 , Figure 4 and Figure 5 , the gear set further comprises a driving gear 411 and a transition gear 412, the transition gear 412 is engaged with the driving gear 411, one of the first gears 413 is engaged with the transition gear 412, and the other first gear 413 is engaged with the driving gear 411, and the second driver 42 drives the driving gear 411 to rotate.

[0066] The driving gear 411 is the power starting point of the entire gear transmission system, and the driving gear 411 is connected with the second driver 42. The power output by the second driver 42 (such as a stepper motor) is first transmitted to the driving gear 411 to drive it to rotate.

[0067] The transition gear 412 plays a role of intermediate transmission and changing the transmission direction in the gear set. The transition gear 412 is engaged with the driving gear 411, receives the power transmitted by the driving gear 411, and continues to transmit the power to the subsequent gears.

[0068] One of the first gears 413 is engaged with the transition gear 412, and the other first gear 413 is engaged with the driving gear 411. Through this connection mode, the two first gears 413 can transmit the power received from the gear set to the corresponding light compensation module 3, thereby driving the light compensation module 3 to rotate.

[0069] When it is necessary to adjust the angle of the light compensation module 3, the second driver 42 starts to work. The output shaft of the second driver 42 drives the driving gear 411 to rotate, providing power input for the entire gear set. Since the driving gear 411 is engaged with the transition gear 412, the rotation of the driving gear 411 will drive the transition gear 412 to rotate through the force between the teeth. In this process, the rotation directions of the driving gear 411 and the transition gear 412 are opposite, which is a basic characteristic of gear engagement transmission. For example, if the driving gear 411 rotates clockwise, the transition gear 412 rotates counterclockwise.

[0070] The first gear 413 meshing with the transition gear 412 (counterclockwise rotation) will rotate under the driving of the transition gear 412. Since the transition gear 412 rotates in the opposite direction of the driving gear 411 (clockwise rotation), the rotation direction of this first gear 413 is the same as that of the driving gear 411, that is, this first gear 413 also rotates clockwise.

[0071] Another first gear 413 directly meshing with the driving gear 411 will rotate under the driving of the driving gear 411, and its rotation direction is opposite to that of the driving gear 411, so this first gear 413 rotates counterclockwise, which is opposite to the rotation direction of the previous first gear 413.

[0072] Through the above gear transmission structure, the two first gears 413 will realize synchronous reverse rotation. Since each first gear 413 is connected with a light supplementing module 3, the two light supplementing modules 3 will also rotate in opposite directions. In this way, the symmetrical reverse rotation of the two light supplementing modules 3 is realized, so as to adjust the angle of the light projected by the two light supplementing modules 3 and change the position of the focusing area 31 on the visual acquisition axis 61.

[0073] Referring to Figure 3 and Figure 4 The moving seat 21 includes a first plate body 211, a second plate body 212, and a plurality of struts 213. The first plate body 211 and the second plate body 212 are oppositely spaced apart, and the plurality of struts 213 are arranged between the first plate body 211 and the second plate body 212. The light supplementing module 3 is arranged on the side of the first plate body 211 away from the second plate body 212. The gear set is arranged between the first plate body 211 and the second plate body 212. The first gear 413 is rotationally connected with the first plate body 211. The second driver 42 is arranged on the side of the second plate body 212 away from the first plate body 211.

[0074] The first plate body 211 and the second plate body 212 can be made of metal (such as aluminum alloy) or high-strength plastic, which has certain strength and stability and can provide stable support for the components installed thereon. They are relatively parallel and maintain a certain distance, and this interval space provides space for the installation and movement of other components.

[0075] A plurality of support columns 213 are arranged between the first plate body 211 and the second plate body 212, which serve to connect and fix the first plate body 211 and the second plate body 212, and ensure the relative position stability therebetween. For example, the support columns 213 can be cylindrical metal rods, which are fixed to the first plate body 211 and the second plate body 212 by welding or screwing. The number of the support columns 213 can be determined according to actual needs, for example, 3-4, which are evenly distributed at the edges or specific positions of the plate bodies, so as to ensure the stability and balance of the entire moving seat 21 structure.

[0076] The light supplement module 3 is mounted on the side of the first plate body 211 away from the second plate body 212, which enables the light supplement module 3 to directly project light to the measured object, avoiding the shielding of the light by the second plate body 212 and other components. The rotating shaft of the light supplement module 3 is rotationally connected with the first plate body 211.

[0077] The gear set is arranged in the spacing space between the first plate body 211 and the second plate body 212, so as to protect the gear set from being interfered and damaged by the external environment, and facilitate the connection and transmission of the gear set with other components. The first gear 413 in the gear set is rotationally connected with the first plate body 211, which can adopt a bearing. The bearing is mounted on the first plate body 211, and the shaft of the first gear 413 is mounted in the bearing, so as to realize the flexible rotation of the first gear 413.

[0078] The second driver 42 is mounted on the side of the second plate body 212 away from the first plate body 211, which can be fixed to the second plate body 212 by screwing, and the output shaft thereof penetrates through the second plate body 212 and is connected with the driving gear 411 in the gear set. When the second driver 42 works, it can drive the driving gear 411 to rotate, and further drive the entire gear set to move.

[0079] Referring to Figure 2 and Figure 6 , the linear moving mechanism 2 further comprises a rack 23 and a second gear 24. One end of the rack 23 is connected with the moving seat 21 and is arranged parallel to the visual acquisition axis 61. The second gear 24 is engaged with the rack 23. The first driver 22 is arranged on the base 1 and is connected to drive the second gear 24 to rotate.

[0080] The rack 23 is a strip-shaped component with a series of equidistant teeth, which can be made of metal materials (such as carbon steel, stainless steel) to ensure its strength and wear resistance. The extension direction of the rack 23 is consistent with the central direction of the visual acquisition module 6 for acquiring the measured object. In this way, when the rack 23 moves, it can drive the moving seat 21 to move along the visual acquisition axis 61.

[0081] The teeth of the second gear 24 are adapted to the teeth of the rack 23, and can be in meshing transmission with the rack 23. The first driver 22 is generally an electric motor (such as a stepper motor or a servo motor), which is installed on the base 1. The first driver 22 is used to provide power for the rotation of the second gear 24, and the output shaft of the first driver 22 is connected to the second gear 24. When the first driver 22 is started, it can drive the second gear 24 to rotate.

[0082] When it is necessary to move the moving seat 21, the control system sends a command to the first driver 22, and the first driver 22 starts to work. The output shaft of the first driver 22 drives the second gear 24 connected thereto to rotate, and the rotational power of the first driver 22 is transmitted to the second gear 24. Since the second gear 24 is in meshing transmission with the rack 23, according to the principle of gear and rack transmission, the rotation of the second gear 24 will be converted into the linear motion of the rack 23. For example, when the second gear 24 rotates clockwise, it will push the rack 23 to move downward along the visual acquisition axis 61; when the second gear 24 rotates counterclockwise, it will pull the rack 23 to move upward along the visual acquisition axis 61.

[0083] Since one end of the rack 23 is connected to the moving seat 21 (for example, connected to the second plate body 212), the linear motion of the rack 23 will drive the moving seat 21 to move along the visual acquisition axis 61, thereby achieving the position adjustment of the moving seat 21 on the visual acquisition axis 61 through the control of the first driver 22, changing the position of the light supplement module 3 installed on the moving seat 21, and finally achieving the adjustment of the position of the focusing area 31 on the visual acquisition axis 61.

[0084] Referring to Figure 2 and Figure 6 , the linear movement mechanism 2 further comprises a limiting wheel 25, which is rotatably arranged on the base 1. The wheel surface of the limiting wheel 25 is in rolling fit with the side surface of the rack 23, and the rotation axis of the limiting wheel 25 is perpendicular to the extension direction of the rack 23.

[0085] The base 1 provides support for the entire linear movement mechanism 2. The limiting wheel 25 is connected to the base 1 by a bearing or a shaft sleeve, etc., so as to ensure that it can rotate flexibly and reduce the friction when the base 1 contacts the rack 23, making the movement of the rack 23 more smooth.

[0086] The limiting wheel 25 is closely attached to the side surface of the rack 23, and when the rack 23 moves, the limiting wheel 25 will roll with the movement of the rack 23. At the same time, the rotation axis of the limiting wheel 25 is perpendicular to the extension direction of the rack 23. This arrangement ensures that the limiting wheel 25 can effectively limit the lateral movement of the rack 23.

[0087] When the rack 23 moves linearly along the vision collection axis 61, it may deviate laterally due to the force during transmission. The presence of the limiting wheel 25 can effectively prevent this lateral deviation. When the rack 23 has a tendency to deviate to one side, the limiting wheel 25 will exert a counteracting force on the rack 23, limiting the rack 23 to the correct movement path, ensuring that the rack 23 always moves parallel to the vision collection axis 61, thereby ensuring that the moving seat 21 and the light supplement module 3 mounted thereon can accurately move along the vision collection axis 61.

[0088] In addition, the rolling fit of the limiting wheel 25 and the rack 23 can reduce the friction and wear between them. Compared with sliding friction, rolling friction has less resistance, which can reduce energy loss and prolong the service life of the rack 23 and the limiting wheel 25. In addition, the limiting wheel 25 can also act as a buffer and shock absorber, reducing the vibration of the rack 23 during movement, making the operation of the entire linear movement mechanism 2 more stable and quiet.

[0089] Referring to Figure 3 and Figure 4 , the angle adjustment mechanism 4 further comprises an angle indication assembly 43, which comprises a protractor 431 and an angle pointer 432. The protractor 431 is arc-shaped and is provided on the moving seat 21, and the center of the arc of the protractor 431 is located on the rotation axis of the light supplement module 3. The angle pointer 432 is provided on the light supplement module 3.

[0090] The protractor 431 is arc-shaped and can be made of plastic, metal or glass, etc. Its surface is marked with angle scales for accurate angle measurement. These scales can range from 0° to 360°, or 0° to ±35°, or appropriate ranges can be set according to actual needs. The protractor 431 is installed on the moving seat 21 to provide a fixed reference standard for subsequent indication of the rotation angle of the light supplement module 3. The angle pointer 432 is an elongated component installed on the light supplement module 3 and rotates with the light supplement module 3.

[0091] The center of the arc of the protractor 431 is located on the rotation axis of the light supplement module 3. This is a key setting requirement. Only when this condition is met, the angle pointer 432 can accurately point to the corresponding angle scale on the protractor 431 when it rotates with the light supplement module 3, thereby correctly reflecting the rotation angle of the light supplement module 3. For example, when the light supplement module 3 rotates around its rotation axis, the angle pointer 432 will move along the arc edge of the protractor 431 and point to the corresponding scale, because the center of the arc of the protractor 431 coincides with the rotation axis of the light supplement module 3.

[0092] When the second driver 42 drives the linkage assembly 41 to rotate the light supplement module 3, the angle pointer 432 installed on the light supplement module 3 will rotate accordingly. Since the protractor 431 is fixed on the moving seat 21 and the center of the circle coincides with the rotation axis of the light supplement module 3, the angle pointer 432 will indicate the current rotation angle of the light supplement module 3 on the scale of the protractor 431 during rotation. The operator can intuitively understand the rotation of the light supplement module 3 by observing the scale indicated by the angle pointer 432, and then accurately control the rotation angle of the light supplement module 3 according to the actual needs, so as to achieve the purpose of adjusting the position of the focusing area 31.

[0093] With reference to Figure 1 and Figure 2 , the base 1 has a through opening 11, and the moving seat 21 is located in the opening 11 and is in sliding connection with the base 1 on both sides.

[0094] The opening 11 on the base 1 is through, and the shape and size of the opening 11 are generally matched with the moving seat 21, and are generally rectangular or other regular shapes, so as to ensure that the moving seat 21 can move smoothly in the opening 11. The size of the opening 11 needs to be determined according to the size of the moving seat 21 and the stroke of the moving seat 21, so as to ensure that the moving seat 21 has enough space to move, and cannot be too large to cause instability of the structure.

[0095] The moving seat 21 is located in the opening 11 of the base 1 and is in sliding connection with the base 1 on both sides, for example, by using a slide rail and a slide block structure. The slide rails are installed on the inner walls of the base 1 on both sides of the opening 11, and the slide blocks are installed on the corresponding positions of the moving seat 21 on both sides, and the slide blocks and the slide rails cooperate with each other, so that the moving seat 21 can slide along the slide rails in the opening 11.

[0096] When it is necessary to adjust the position of the focusing area 31 on the visual acquisition axis 61, the first driver 22 drives the second gear 24 in the linear moving mechanism 2 to rotate. Since the second gear 24 is in engagement with the rack 23, the rack 23 will move linearly under the drive of the second gear 24, and the rack 23 is connected with the moving seat 21, so as to drive the moving seat 21 to slide in the opening 11 of the base 1 along the visual acquisition axis 61. The sliding of the moving seat 21 will further drive the light supplement module 3 installed thereon to move, so as to change the position of the light projected by the light supplement module 3, and finally realize the adjustment of the position of the focusing area 31.

[0097] With reference to Figure 1 and Figure 2 , the visual light source automatic adjustment device further comprises a linear scale 5, which is arranged at one end of the base 1 where the visual acquisition module 6 is installed, and the length direction of the linear scale 5 is parallel to the visual acquisition axis 61.

[0098] The base 1 serves as a basic supporting component of the entire device, and provides a stable mounting platform for the visual acquisition module 6 and the linear scale 5. The length direction of the linear scale 5 is parallel to the visual acquisition axis 61, so that the scale direction of the linear scale 5 is consistent with the acquisition direction of the visual acquisition module 6, and the position information related to visual acquisition can be accurately reflected. The linear scale 5 is generally made of metal or plastic material, and has clear and accurate scale marks on the surface. The scale interval is determined according to the actual measurement accuracy requirement, such as 1mm, 0.5mm, etc.

[0099] The main function of the linear scale 5 is to provide scale indication for adjusting the mounting position of the visual acquisition module 6. During the use of the device, when the mounting position of the visual acquisition module 6 needs to be adjusted, the operator can refer to the scale on the linear scale 5. For example, when the visual acquisition module 6 moves on the base 1 along the visual acquisition axis 61, the position of the visual acquisition module 6 relative to the linear scale 5 will change, and the operator can accurately determine the moving distance and current position of the visual acquisition module 6 by observing the relative position of the visual acquisition module 6 and the scale of the linear scale 5.

[0100] For example, in the scene of industrial production, product model change often occurs. Different types of products may have different requirements for the mounting position of the visual acquisition module 6. With the linear scale 5, when the product model is changed, the operator can quickly and accurately adjust the visual acquisition module 6 to the appropriate position according to the detection requirements of the new product by referring to the scale on the linear scale 5, without the need for repeated measurement and trial, greatly improving the installation and debugging efficiency and reducing the debugging time.

[0101] Referring to Figure 1 and Figure 2 , the embodiment of the present application also provides a visual identification system, which comprises a visual acquisition module 6 and the visual light source automatic adjustment device according to any one of the above embodiments, and the visual acquisition module 6 is mounted on the base 1 and has a visual acquisition axis 61 facing the measured object.

[0102] The visual identification system of the embodiment of the present application has the beneficial effects brought by the visual light source automatic adjustment device in any one of the above embodiments, and the details are not repeated here.

[0103] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A visual light source automatic adjusting device, characterized by, The application relates to a visual acquisition device, comprising: a base for mounting a visual acquisition module, the visual acquisition module having a visual acquisition axis towards a measured object; a linear movement mechanism comprising a movement base and a first driver, the movement base being movably arranged on the base along the visual acquisition axis and being driven by the first driver; two light supplement modules rotatably arranged on the movement base and symmetrically distributed on both sides of the visual acquisition axis, the light rays projected by the two light supplement modules intersecting on the visual acquisition axis to form a focusing area; and an angle adjustment mechanism comprising a linkage assembly and a second driver, the second driver driving the linkage assembly, the linkage assembly connecting the two light supplement modules and converting the output of the second driver into symmetrically opposite rotation of the two light supplement modules; wherein the position of the focusing area on the visual acquisition axis is adjusted by at least one of the linear movement mechanism and the angle adjustment mechanism. The linkage assembly comprises a gear set, the gear set comprising two first gears, one first gear corresponding to one light supplement module, and the two first gears being synchronously and oppositely rotated by the gear set driven by the second driver.

2. The visual light source automatic adjustment apparatus according to claim 1, wherein The gear set further comprises a driving gear and a transition gear, the transition gear being engaged with the driving gear, one first gear being engaged with the transition gear, and the other first gear being engaged with the driving gear, the second driver driving the driving gear to rotate.

3. The visual light source automatic adjustment apparatus according to claim 2, wherein The movement base comprises a first plate body, a second plate body and a plurality of struts, the first plate body and the second plate body being oppositely arranged, the plurality of struts being arranged between the first plate body and the second plate body, the light supplement modules being arranged on one side of the first plate body away from the second plate body, the gear set being arranged between the first plate body and the second plate body, the first gears being rotatably connected with the first plate body, and the second driver being arranged on one side of the second plate body away from the first plate body.

4. The visual light source automatic adjustment apparatus according to claim 2, wherein The linear movement mechanism further comprises a rack and a second gear, one end of the rack being connected with the movement base and being arranged parallel to the visual acquisition axis, the second gear being engaged with the rack, and the first driver being arranged on the base and being connected to drive the second gear to rotate.

5. The visual light source automatic adjustment apparatus according to claim 1, wherein The linear movement mechanism further comprises a limiting wheel, the limiting wheel being rotatably arranged on the base, the wheel surface of the limiting wheel being in rolling contact with the side surface of the rack, and the rotation axis of the limiting wheel being perpendicular to the extension direction of the rack.

6. The visual light source automatic adjustment apparatus according to claim 5, wherein The angle adjustment mechanism further comprises an angle indication assembly, the angle indication assembly comprising a protractor and an angle pointer, the protractor being arranged in an arc shape on the movement base, the center of the arc shape of the protractor being located on the rotation axis of the light supplement modules, and the angle pointer being arranged on the light supplement modules.

7. The visual light source automatic adjustment apparatus according to claim 1, wherein The base has a through opening, the movement base being located in the opening, and the two sides of the movement base being slidably connected with the base.

8. The visual light source automatic adjustment apparatus according to claim 1, wherein ​ 9. The visual light source automatic adjustment apparatus according to claim 1, wherein The visual light source automatic adjusting device further comprises a linear scale, which is arranged at one end of the base where the visual acquisition module is mounted, and the length direction of the linear scale is parallel to the visual acquisition axis.

10. A visual recognition system, characterized by A visual acquisition device comprising a visual acquisition module and a visual light source automatic adjusting device according to any one of claims 1 to 9, wherein the visual acquisition module is mounted on the base and has a visual acquisition axis directed towards the object to be measured.

Images