Three-dimensional calibration plate applied to industrial vision robot

Abstract

The utility model belongs to the technical field of calibration plates, and provides a three-dimensional calibration plate applied to an industrial vision robot. On the basis of the large-size calibration plate, the tracks are arranged on the left side and the right side of the large-size calibration plate, the light supplementing mechanism and the locking mechanism are installed through the tracks, the light supplementing mechanism achieves light supplementing on the left side and the right side of the large-size calibration plate through cooperation of the LED lamp beads and the diffuse reflection plate, and the light supplementing mechanism is used in cooperation with an external lighting lamp. Sufficient brightness of the two sides of the large-size calibration plate is ensured; meanwhile, based on the structural arrangement of the track, the sliding block and the locking mechanism, the relative position of the light supplementing mechanism in the longitudinal direction can be adjusted according to the light supplementing requirement, and light supplementing is more flexible.

Description

Technical Field

[0001] The utility model belongs to the technical field of calibration plates, and specifically relates to a three-dimensional calibration plate applied to an industrial visual robot. Background Art

[0002] Three-dimensional calibration plates, namely calibration plates, are mainly used in machine vision, image measurement, photogrammetry, three-dimensional reconstruction and other applications to correct lens distortion, determine the conversion relationship between physical size and pixels, etc. When using the calibration plate in actual operation, if the brightness of the calibration plate is insufficient, it is easy to cause the calibration plate imaging to be overexposed, which will cause the extraction of feature contours to be offset, affecting the accuracy, focal length and clarity of the center of the circle extraction. In view of the above problems, the prior art mainly uses an external lighting lamp to illuminate the calibration plate to ensure that the brightness of the calibration plate is sufficient. However, for large-sized calibration plates, such as calibration plates with a length of 5m to 10m, the height of such calibration plates is generally 1 to 2m, which results in the use of auxiliary lighting lamps to illuminate. The brightness of the edges on both sides of the calibration plate will be significantly attenuated compared to the brightness of the center and the upper and lower ends of the calibration plate, thereby affecting the visual camera calibration effect. Utility Model Content

[0003] The purpose of the utility model is to provide a three-dimensional calibration plate applied to an industrial vision robot to solve the technical problems existing in the prior art.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A three-dimensional calibration plate applied to an industrial vision robot comprises a calibration plate, tracks arranged on both sides of the calibration plate and arranged in a longitudinal direction, a fill light mechanism arranged on the track and movable along the track, and a locking mechanism arranged on the fill light mechanism; the fill light mechanism comprises a slider located at a rear end and matched with the track, and a fill light box located at a front end and integrally formed with the slider, the fill light box is hollow inside and one end of which faces the calibration plate, and a fill light window is arranged at the end, a plurality of LED lamp beads are arranged on the inner side of one end of the fill light box and around the fill light window, and a diffuse reflection plate used in combination with the LED lamp beads is arranged on the inner wall of the other end of the fill light box.

[0006] Furthermore, one end surface of the sliding block is provided with a sliding groove matching the track.

[0007] Furthermore, the track and the calibration plate are in an integrated structure, and limit blocks are provided at both upper and lower ends thereof.

[0008] Furthermore, the locking mechanism includes a locking handle arranged on the slider, a locking rod rotatably connected to the middle part of the locking handle, and a spring sleeved on the locking rod; the end of the locking rod extends into the slider and a pressure block for pressing the track is arranged at the end, and the lower end of the spring is connected to the pressure block.

[0009] Furthermore, a through hole for the locking rod to pass through is provided on the other end surface of the slider, a cavity connected to the through hole and the slide groove is provided in the slider, the pressure block and the spring are located in the cavity, and the upper end of the spring abuts against the upper end of the cavity.

[0010] Furthermore, friction stripes are arranged on the bottom of the pressing block.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The utility model is based on a large-size calibration plate, and tracks are arranged on the left and right sides of the large-size calibration plate, and a fill light mechanism and a locking mechanism are installed through the tracks, wherein the fill light mechanism adopts the cooperation of LED lamp beads and diffuse reflection plates to realize fill light on the left and right sides of the large-size calibration plate, and is used in conjunction with an external lighting lamp to ensure sufficient brightness on both sides of the large-size calibration plate; at the same time, based on the structural arrangement of the track, the slider and the locking mechanism, the relative position of the fill light mechanism in the longitudinal direction can be adjusted according to the need for fill light, and the fill light is realized more flexibly. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model.

[0014] Figure 2 for Figure 1 Enlarged schematic diagram of part A in the middle.

[0015] Figure 3 It is a schematic diagram of the inner side of the left end surface of the fill light box in the embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the outer side of the left end surface of the fill light box in the embodiment of the utility model.

[0017] Figure 5 It is a schematic diagram of the inner side of the right end surface of the fill light box in the embodiment of the utility model.

[0018] Figure 6 It is a structural schematic diagram of the locking mechanism in the utility model in the unlocked state.

[0019] Figure 7 It is a structural schematic diagram of the locking state of the locking mechanism in the utility model.

[0020] Figure 8It is a side view of the marking plate in the utility model.

[0021] Among them, the names corresponding to the figure numbers are as follows: 1-spring, 2-friction stripes, 3-calibration plate, 4-track, 5-fill light mechanism, 6-slider, 7-fill light box, 8-fill light window, 9-LED lamp bead, 10-diffuse reflection plate, 11-slide groove, 12-limit block, 13-lock handle, 14-lock rod, 15-pressing block, 16-through hole, 17-cavity. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to have a clearer understanding and knowledge of the present invention, the present invention is further described in detail in conjunction with the following embodiments. It should be noted that the specific embodiments described below are only used to explain the present invention and facilitate understanding. The technical solutions provided by the present invention are not limited to the technical solutions provided by the following embodiments, and the technical solutions provided by the embodiments should not limit the protection scope of the present invention.

[0023] Example

[0024] like Figures 1 to 8 As shown, this embodiment provides a three-dimensional calibration plate for industrial vision robots, which is mainly suitable for large-size calibration plates, such as calibration plates with a length of 5 to 10 meters and a height of 1 to 2 meters. The calibration plate can be used in conjunction with a support frame when used, and the calibration plate can be installed on the support frame.

[0025] In this embodiment, tracks are provided on both sides of the calibration plate. Preferably, the track and the calibration plate are integrally structured and arranged along the length direction (i.e., longitudinal direction) of the mounting frame. The track protrudes outward relative to the calibration plate, and limit blocks are provided at both upper and lower ends thereof. The limit blocks and the track are integrally structured.

[0026] Based on the structure of the track, a fill light mechanism that can move along the track is arranged on the track; the fill light mechanism includes a slider located at the rear end and matched with the track, and a fill light box located at the front end and integrated with the slider, the fill light box is hollow inside and one end of which faces the calibration plate, and a fill light window is arranged at the end, a number of LED lamp beads are arranged on the inner side of one end of the fill light box and around the fill light window, and a diffuse reflection plate used in conjunction with the LED lamp beads is arranged on the inner wall of the other end of the fill light box. Taking the fill light mechanism on the right as the description reference, a slide groove matching the track is opened on the left end face of the slider. During assembly, the track is embedded in the slide groove of the slider, and the limit block limits the up and down movement of the slider; the end of the fill light box facing the calibration plate is the left end, and the other end is the right end opposite to the left end. The fill light window adopts a rectangular through hole structure, which is arranged at the left end of the fill light box and faces the calibration plate so that the fill light can be injected into the side of the calibration plate. The diffuse reflection plate is arranged on the inner wall of the right end of the fill light box. The LED lamp bead is connected to an external power supply, and the light it emits is irradiated on the diffuse reflection plate and then emitted through the fill light window.

[0027] A locking mechanism is provided on the slider of the fill light mechanism, which is used to lock the slider after the slider completes sliding. In this embodiment, the locking mechanism includes a locking handle arranged on the slider, a locking rod rotatably connected to the middle part of the locking handle, and a spring sleeved on the locking rod; the end of the locking rod extends into the slider and a pressure block for pressing the track is provided at the end, and the lower end of the spring is connected to the pressure block. Based on the above structure, the connection structure of the locking mechanism and the slider is as follows: a through hole for the locking rod to pass through is provided on the other end face of the slider, and a cavity connected to the through hole and the slide groove is provided in the slider, the pressure block and the spring are located in the cavity, and the upper end of the spring abuts against the upper end of the cavity. In a further preferred embodiment, friction stripes are also provided at the bottom of the pressure block to make the pressure block press the track better. The working principle of the locking mechanism is as follows: in the unlocked state, the locking handle rotates upward relative to the locking rod, and the locking handle is perpendicular to the slider, with one end facing upward and the other end facing downward, the locking rod and the pressure block move upward and compress the spring, the pressure block is separated from the slide slot, and the pressure block does not press the track. At this time, the slider of the fill light mechanism can slide freely relative to the track; in the locked state, the locking handle rotates downward relative to the locking rod, and the locking handle is parallel to the slider, with one end located on the left and the other end located on the right. Under the action of the restoring force of the spring, the locking rod and the pressure block move downward, and the bottom of the pressure block extends into the slide slot and presses the track. At this time, the slider of the fill light mechanism is locked relative to the track and cannot move.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A three-dimensional calibration plate for an industrial vision robot, characterized in that: The invention comprises a calibration plate (3), tracks (4) arranged on both sides of the calibration plate (3) and arranged in the longitudinal direction, a fill light mechanism (5) arranged on the track (4) and movable along the track (4), and a locking mechanism arranged on the fill light mechanism (5); the fill light mechanism (5) comprises a slider (6) located at the rear end and matched with the track (4), and a fill light box (7) located at the front end and integrally formed with the slider (6); the fill light box (7) is hollow inside and one end of the fill light box faces the calibration plate (3), and a fill light window (8) is arranged at the end; a plurality of LED lamp beads (9) are arranged on the inner side of one end of the fill light box (7) and around the fill light window (8); and a diffuse reflection plate (10) used in combination with the LED lamp beads (9) is arranged on the inner wall of the other end of the fill light box (7).

2. The three-dimensional calibration plate for industrial vision robots according to claim 1, characterized in that: One end surface of the sliding block (6) is provided with a sliding groove (11) matching the track (4).

3. The three-dimensional calibration plate for industrial vision robots according to claim 2, characterized in that: The track (4) and the calibration plate (3) are in an integrated structure, and limit blocks (12) are provided at both upper and lower ends thereof.

4. The three-dimensional calibration plate for industrial vision robots according to claim 3, characterized in that: The locking mechanism comprises a locking handle (13) arranged on the slider (6), a locking rod (14) rotatably connected to the middle part of the locking handle (13), and a spring (1) sleeved on the locking rod (14); the end of the locking rod (14) extends into the slider (6) and a pressing block (15) for pressing the track (4) is arranged at the end, and the lower end of the spring (1) is connected to the pressing block (15).

5. The three-dimensional calibration plate for industrial vision robots according to claim 4, characterized in that: A through hole (16) for the locking rod (14) to pass through is provided on the other end surface of the slider (6), a cavity (17) communicating with the through hole (16) and the slide groove (11) is provided inside the slider (6), the pressure block (15) and the spring (1) are located in the cavity (17), and the upper end of the spring (1) abuts against the upper end of the cavity (17).

6. The three-dimensional calibration plate for industrial vision robots according to claim 5, characterized in that: Friction stripes (2) are also provided at the bottom of the pressing block (15).

Images