CN215725731U - Pipe outer diameter detection device - Google Patents
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- CN215725731U CN215725731U CN202121803068.5U CN202121803068U CN215725731U CN 215725731 U CN215725731 U CN 215725731U CN 202121803068 U CN202121803068 U CN 202121803068U CN 215725731 U CN215725731 U CN 215725731U
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Abstract
The utility model relates to the technical field of pipe online measurement, in particular to a pipe outer diameter detection device. A pipe outer diameter detection device comprises a first light source emitting a first parallel light beam, a second light source emitting a second parallel light beam, a first reflection assembly used for reflecting the first parallel light beam, and a camera used for sensing the second parallel light beam and the first parallel light beam reflected by the first reflection assembly, wherein the first parallel light beam is parallel to the second parallel light beam; the tube to be measured is located between the first parallel light beam and the second parallel light beam, and the section of the tube shields part of the first parallel light beam and part of the second parallel light beam. The utility model has simple structure, and realizes the measurement of the outer diameter of the large-diameter pipe on the basis of low cost by utilizing the reflection principle.
Description
Technical Field
The utility model relates to the technical field of pipe online measurement, in particular to a pipe outer diameter detection device.
Background
The pipe diameter is a key index for measuring the quality of the pipe in the production process, the outer diameter of the pipe is measured, the diameter of a product can be monitored, the production of an out-of-tolerance product is avoided, the defect of abnormal size generated on the surface of the pipe is monitored, and the defects such as abrasion, inclusion and the like can be monitored. The most common diameter measurement mode is a caliper measurement mode, and the method can only be used for sampling inspection in a production line and is easy to cause large material loss and economic loss. The Chinese patent application, publication number is: CN110595369B, which discloses a pipe diameter measuring device based on machine vision, the device mainly comprises a vertical support and a chassis which are vertically connected, the support is horizontally connected with an upper cross rod and a lower cross rod, the ends of the two cross rods on the same side are respectively provided with a camera, and the two cameras are positioned right above the central line of the pipe to be measured; the two cross rods are respectively installed with the vertical support in an adjustable mode through the clamping devices, and the vertical distance between the camera and the pipe and the extension length of the camera in the horizontal direction are continuously adjusted through the clamping devices. This device utilizes the camera can carry out on-line pipe diameter measurement to tubular product, avoids examining to the hourglass of tubular product diameter to a certain extent, but this kind of measuring device is when measuring the great tubular product of external diameter, and in the picture that tubular product obtained was shot to general camera, the size that each pixel corresponds also can increase rapidly, and this makes the synchronous increase of measuring error, if the higher camera of performance, then increased measurement cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pipe outer diameter detection device for solving the problems of low precision and high measurement cost in the outer diameter measurement of a pipe with a larger diameter in the prior art.
In order to solve the technical problems, the utility model adopts the technical scheme that: a pipe outer diameter detection device comprises a first light source emitting a first parallel light beam, a second light source emitting a second parallel light beam, a first reflection assembly used for reflecting the first parallel light beam, and a camera used for sensing the second parallel light beam and the first parallel light beam reflected by the first reflection assembly, wherein the first parallel light beam is parallel to the second parallel light beam; the tube to be measured is located between the first parallel light beam and the second parallel light beam, and the section of the tube shields part of the first parallel light beam and part of the second parallel light beam.
In the technical scheme, when the device is used, the device is placed in a closed dark environment, because the cross section of the tube shields the first parallel light beam and the second parallel light beam which are parallel to each other, namely two ends of a certain tube diameter in the tube are respectively positioned in the first parallel light beam and the second parallel light beam, one part of the second parallel light beam emitted by the second light source is shielded by the tube, the other unshielded part of the second parallel light beam irradiates into the camera, one part of the first parallel light beam emitted by the first light source is shielded by the tube, the other part of the first parallel light beam irradiates into the camera through reflection of the first reflection assembly, and in the camera, the part of the tube is black due to shielding light, and the part which exceeds the tube up and down is white due to light passing through. Therefore, after the picture is subjected to pixel analysis, the outer diameter of the pipe in a certain direction is measured. The technical scheme has a simple structure, utilizes the reflection principle, realizes the measurement of the outer diameter of the large-diameter pipe on the basis of low cost, and simultaneously improves the measurement precision of the outer diameter of the pipe.
Preferably, the first reflection assembly includes a first plane mirror and a second plane mirror, and the first parallel light beam is sequentially reflected to the camera through the first plane mirror and the second plane mirror.
Preferably, the device further comprises a second reflecting assembly for reflecting the second parallel light beams, and the camera is used for sensing the second parallel light beams reflected by the second reflecting assembly.
Preferably, the second reflection assembly includes a third plane mirror and a fourth plane mirror, and the second parallel light beams are sequentially reflected to the camera through the third plane mirror and the fourth plane mirror.
Preferably, the first light source and the second light source are arranged on the same side of the tube, and the camera is arranged on the opposite side of the tube.
Preferably, the device further comprises a third light source emitting a third parallel light beam, a fourth light source emitting a fourth parallel light beam, a third reflection assembly for reflecting the third parallel light beam, and a fourth reflection assembly for reflecting the fourth parallel light beam, wherein the third parallel light beam is parallel to the fourth parallel light beam, a part of the third parallel light beam and a part of the fourth parallel light beam are blocked by the cross section of the pipe, and the camera is further used for sensing the third parallel light beam and the fourth parallel light beam reflected by the third reflection assembly and the fourth reflection assembly.
Preferably, the third light source and the fourth light source are located on the same side of the tubing, and the camera is located on an adjacent side of the tubing.
Preferably, the third reflection assembly includes a fifth plane mirror, a sixth plane mirror, and a seventh plane mirror, and the third parallel light beam is reflected onto the camera through the fifth plane mirror, the sixth plane mirror, and the seventh plane mirror in sequence.
Preferably, the fourth reflection assembly includes an eighth plane mirror, a ninth plane mirror, and a tenth plane mirror, and the fourth parallel light beam is reflected onto the camera through the eighth plane mirror, the ninth plane mirror, and the tenth plane mirror in sequence.
Preferably, the lighting device further comprises a controller, and the first light source, the second light source, the third light source and the fourth light source are all electrically connected with the controller.
Compared with the prior art, the utility model has the following beneficial effects:
in the utility model, in the technical scheme, when the device is used, the device is placed in a closed dark environment, because the cross section of the tube shields the first parallel light beam and the second parallel light beam which are parallel to each other, namely two ends of a certain tube diameter in the tube are respectively positioned in the first parallel light beam and the second parallel light beam, one part of the second parallel light beam emitted by the second light source is shielded by the tube, the other unshielded part is irradiated into the camera, one part of the first parallel light beam emitted by the first light source is shielded by the tube, the other part is reflected and irradiated into the camera through the first reflecting assembly, in the camera, the part of the tube is black because the light is shielded, and the part which is higher than the tube up and down is white because the light passes through. Therefore, after the picture is subjected to pixel analysis, the outer diameter of the pipe in a certain direction is measured. The technical scheme has a simple structure, utilizes the reflection principle, realizes the measurement of the outer diameter of the large-diameter pipe on the basis of low cost, and simultaneously improves the measurement precision of the outer diameter of the pipe.
Drawings
FIG. 1 is a schematic structural view of an embodiment 1 of the apparatus for measuring the outer diameter of a pipe according to the present invention;
FIG. 2 is a schematic structural view of an embodiment 2 of the apparatus for measuring the outer diameter of a pipe according to the present invention;
FIG. 3 is a schematic structural view of an embodiment 3 of the apparatus for detecting the outer diameter of a pipe material according to the present invention.
In the drawings: 1. a first light source; 2. a second light source; 3. a third light source; 4. a fourth light source; 5. a camera; 6. a pipe; 11. a first parallel beam; 21. a second parallel beam; 31. a third parallel beam; 41. a fourth parallel beam; 111. a first plane mirror; 112. a second plane mirror; 211. a third planar mirror; 212. a fourth plane mirror; 311. a fifth plane mirror; 312. a sixth plane mirror; 313. a seventh plane mirror; 411. an eighth plane mirror; 412 a ninth plane mirror; 413. a tenth plane mirror.
Detailed Description
The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "long", "short", etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the drawings, it is only for convenience of description and simplicity of description, but does 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 therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The technical scheme of the utility model is further described in detail by the following specific embodiments in combination with the attached drawings:
example 1
As shown in fig. 1, a pipe outer diameter detection device includes a first light source 1 emitting a first parallel light beam 11, a second light source 2 emitting a second parallel light beam 21, a first reflection assembly for reflecting the first parallel light beam 11, and a camera 5 for sensing the second parallel light beam 21 and the first parallel light beam 11 reflected by the first reflection assembly, wherein the first parallel light beam 11 is parallel to the second parallel light beam 21; the pipe 6 to be measured is located between the first parallel light beam 11 and the second parallel light beam 21, and the cross section of the pipe 6 shields a part of the first parallel light beam 11 and a part of the second parallel light beam 21. In the embodiment, when in use, the apparatus is placed in a closed dark environment, because the cross section of the tube 6 shields the first parallel light beam 11 and the second parallel light beam 21 which are parallel to each other, that is, two ends of a certain tube diameter in the tube 6 are respectively located in the first parallel light beam 11 and the second parallel light beam 21, a part of the second parallel light beam 21 emitted by the second light source 2 is shielded by the tube 6, the other unshielded part is irradiated into the camera 5, a part of the first parallel light beam 11 emitted by the first light source 1 is shielded by the tube 6, and the other part is reflected by the first reflection assembly and irradiated into the camera 5, and in the camera 5, the part of the tube 6 is black because the light is shielded, and the part which exceeds the tube 6 up and down is white because the light passes through. Therefore, after the picture is subjected to pixel analysis, the outer diameter of the pipe 6 in a certain direction is measured. The embodiment has a simple structure, realizes the measurement of the outer diameter of the large-diameter pipe 6 on the basis of low cost by utilizing the reflection principle, and simultaneously improves the measurement precision of the outer diameter of the pipe 6.
The first reflection assembly includes a first plane mirror 111 and a second plane mirror 112, and the first parallel light beam 11 is sequentially reflected to the camera 5 through the first plane mirror 111 and the second plane mirror 112. In this embodiment, the first light source 1 and the second light source are located on the left side of the tube 6, the camera 5 is located on the right side of the tube 6, the first parallel light beam 11 and the second parallel light beam 21 are both parallel to the X axis, wherein the top end of the tube 6 is located in the first parallel light beam 11, the bottom end of the tube 6 is located in the second parallel light beam 21, the included angles between the first plane mirror 111 and the Y axis and the second plane mirror 112 are both 45 °, the second plane mirror 112 is located right below the first plane mirror 111, and the second parallel light beam 21 and the first parallel light beam 11 reflected by the first plane mirror 111 and the second plane mirror 112 are both small in area and are perpendicularly incident into the camera 5, so that the receiving and processing of the camera 5 are facilitated.
The first light source 1 and the second light source 2 are disposed on the same side of the tube 6, and the camera 5 is disposed on the opposite side of the tube 6. In the embodiment, the number of plane mirrors in the first reflecting assembly can be reduced, and the installation difficulty of the reflecting assembly is reduced
In addition, the device also comprises an alarm, and the camera 5 is in signal connection with the alarm. In this embodiment, when the outer diameter of the pipe 6 detected by the camera 5 exceeds the range required by the qualified product, the alarm will give an alarm to inform the inspector to sort out the unqualified pipe 6.
The working principle is as follows:
in the utility model, when in use, the equipment is placed in a closed dark environment, because the cross section of the tube 6 shields the mutually parallel parts of the first parallel light beam 11 and the second parallel light beam 21, namely two ends of a certain tube diameter in the tube 6 are respectively positioned in the first parallel light beam 11 and the second parallel light beam 21, one part of the second parallel light beam 21 emitted by the second light source 2 is shielded by the tube 6, the other part which is not shielded is irradiated into the camera 5, one part of the first parallel light beam 11 emitted by the first light source 1 is shielded by the tube 6, the other part is reflected by the first reflecting assembly and irradiated into the camera 5, and in the camera 5, the part of the tube 6 is black because the light is shielded, and the part which exceeds the tube 6 up and down is white because the light passes through. Therefore, after the picture is subjected to pixel analysis, the outer diameter of the pipe 6 in a certain direction is measured. The embodiment has a simple structure, realizes the measurement of the outer diameter of the large-diameter pipe 6 on the basis of low cost by utilizing the reflection principle, and simultaneously improves the measurement precision of the outer diameter of the pipe 6.
Example 2
As shown in fig. 2, the difference from embodiment 1 is that the pipe outer diameter detection apparatus in this embodiment further includes a second reflection assembly for reflecting a second parallel light beam 21, and the camera 5 is configured to sense the second parallel light beam 21 reflected by the second reflection assembly. In the present invention, this allows the camera 5 to better receive the first parallel light beam 11 and the second parallel light beam 21.
The second reflection assembly includes a third plane mirror 211 and a fourth plane mirror 212, and the second parallel light beam 21 is sequentially reflected to the camera 5 through the third plane mirror 211 and the fourth plane mirror 212. In this embodiment, the included angles between the third flat mirror 211 and the fourth flat mirror 212 and the Y axis are both 45 °, the third flat mirror 211 is located right below the fourth flat mirror 212, and the second parallel light beam 21 is reflected sequentially by the third flat mirror 211 and the fourth flat mirror 212 and then vertically incident into the camera 5.
Example 3
As shown in fig. 3, the difference between the present embodiment and the present embodiments 1 and 2 is that the tube outer diameter detection apparatus in the present embodiment further includes a third light source 3 emitting a third parallel light beam 31, a fourth light source 4 emitting a fourth parallel light beam 41, a third reflection assembly for reflecting the third parallel light beam 31, and a fourth reflection assembly for reflecting the fourth parallel light beam 41, the third parallel light beam 31 is parallel to the fourth parallel light beam 41, a cross section of the tube 6 blocks a portion of the third parallel light beam 31 and a portion of the fourth parallel light beam 41, and the camera 5 is further configured to sense the third parallel light beam 31 and the fourth parallel light beam 41 reflected by the third reflection assembly and the fourth reflection assembly. In the embodiment, the pipe diameters of the partially-unqualified pipes 6 have deviation, and the third light source 3 and the fourth light source 4 are used for calculating the outer diameter of the other pipe 6, so that the accuracy of the device for measuring the outer diameter can be improved.
Wherein the third light source 3 and the fourth light source 4 are located on the same side of the tube, and the camera 5 is located on the adjacent side of the tube 6. In the present embodiment, the third light source 3 and the fourth light source 4 are located at the lower side of the tube 6, and the third parallel light beam 31 and the fourth parallel light beam 41 are both parallel to the Y axis, wherein the left end of the tube 6 is located in the third parallel light beam 31, and the right end of the tube 6 is located in the fourth parallel light beam 41, so that the third light source 3 and the fourth light source 4 are convenient to install and debug.
The third reflection assembly includes a fifth plane mirror 311, a sixth plane mirror 312, and a seventh plane mirror 313, and the third parallel light beam 31 is sequentially reflected to the camera 5 by the fifth plane mirror 311, the sixth plane mirror 312, and the seventh plane mirror 313. In this embodiment, the fifth plane mirror 311 is located directly above the third light source 3 and higher than the top end of the tube 6, the sixth plane mirror 312 and the seventh plane mirror 313 are located on the right side of the tube 6, the sixth plane mirror 312 is located directly to the right of the fifth plane mirror 311, the seventh plane mirror 313 is located directly below the sixth plane mirror 312, the included angles between the fifth plane mirror 311, the sixth plane mirror 312 and the seventh plane mirror 313 and the Y axis are 45 °, and the third parallel light beam 31 is reflected by the fifth plane mirror 311, the sixth plane mirror 312 and the seventh plane mirror 313 in sequence and is vertically incident on the camera 5.
The fourth reflective assembly includes an eighth plane mirror 411, a ninth plane mirror 412, and a tenth plane mirror 413, and the fourth parallel light beam 41 is sequentially reflected by the eighth plane mirror 411, the ninth plane mirror 412, and the tenth plane mirror 413 to the camera 5. In this embodiment, the eight plane mirror, the ninth plane mirror 412, and the tenth plane mirror 413 are all located on the right side of the tube 6, the eighth plane mirror 411 is located directly above the fourth light source 4, the eighth plane mirror 411 is higher than the top end of the tube 6, the ninth plane mirror 412 is located directly to the right of the eighth plane mirror 411, the tenth plane mirror 413 is located directly below the ninth plane mirror 412, and the fourth parallel light beam 41 is reflected by the eighth plane mirror 411, the ninth plane mirror 412, and the tenth plane mirror 413 in sequence and is incident vertically into the camera 5.
In addition, the LED illumination device also comprises a controller, and the first light source 1, the second light source 2, the third light source 3 and the fourth light source 4 are all electrically connected with the controller. In this embodiment, the controller first lights the first light source 1 and the second light source 2, and then lights the third light source 3 and the fourth light source 4 after the first light source 1 and the second light source 2 are turned off, so as to avoid the mutual interference between the light sources.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and 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 (10)
1. The utility model provides a tubular product external diameter detection device which characterized in that: the device comprises a first light source (1) emitting a first parallel light beam (11), a second light source (2) emitting a second parallel light beam (21), a first reflection assembly for reflecting the first parallel light beam (11), and a camera (5) for sensing the second parallel light beam (21) and the first parallel light beam (11) reflected by the first reflection assembly, wherein the first parallel light beam (11) is parallel to the second parallel light beam (21); the pipe (6) to be measured is located between the first parallel light beam (11) and the second parallel light beam (21), and the section of the pipe (6) shields a part of the first parallel light beam (11) and a part of the second parallel light beam (21).
2. The pipe outer diameter detection device according to claim 1, characterized in that: the first reflection assembly comprises a first plane mirror (111) and a second plane mirror (112), and the first parallel light beam (11) is sequentially reflected to the camera (5) through the first plane mirror (111) and the second plane mirror (112).
3. The pipe outer diameter detection device according to claim 1, characterized in that: and a second reflecting assembly for reflecting the second parallel light beam (21), the camera (5) being adapted to sense the second parallel light beam (21) reflected by the second reflecting assembly.
4. The pipe outer diameter detection device according to claim 3, characterized in that: the second reflection assembly comprises a third plane mirror (211) and a fourth plane mirror (212), and the second parallel light beams (21) are sequentially reflected to the camera (5) through the third plane mirror (211) and the fourth plane mirror (212).
5. The pipe outer diameter detection device according to claim 1, characterized in that: the first light source (1) and the second light source (2) are arranged on the same side of the tube (6), and the camera (5) is positioned on the opposite side of the tube (6).
6. The pipe outer diameter detection device according to claim 1, characterized in that: the light source device further comprises a third light source (3) emitting a third parallel light beam (31), a fourth light source (4) emitting a fourth parallel light beam (41), a third reflection assembly for reflecting the third parallel light beam (31) and a fourth reflection assembly for reflecting the fourth parallel light beam (41), wherein the third parallel light beam (31) is parallel to the fourth parallel light beam (41), the section of the tube (6) shields a part of the third parallel light beam (31) and a part of the fourth parallel light beam (41), and the camera (5) is further used for sensing the third parallel light beam (31) and the fourth parallel light beam (41) reflected by the third reflection assembly and the fourth reflection assembly.
7. The pipe outer diameter detection device according to claim 6, characterized in that: the third light source (3) and the fourth light source (4) are located on the same side of the tubing (6), and the camera (5) is located on an adjacent side of the tubing (6).
8. The pipe outer diameter detection device according to claim 6, characterized in that: the third reflection assembly comprises a fifth plane mirror (311), a sixth plane mirror (312) and a seventh plane mirror (313), and the third parallel light beam (31) is reflected to the camera (5) through the fifth plane mirror (311), the sixth plane mirror (312) and the seventh plane mirror (313) in sequence.
9. The pipe outer diameter detection device according to claim 6, characterized in that: the fourth reflection assembly comprises an eighth plane mirror (411), a ninth plane mirror (412) and a tenth plane mirror (413), and the fourth parallel light beam (41) is sequentially reflected to the camera (5) through the eighth plane mirror (411), the ninth plane mirror (412) and the tenth plane mirror (413).
10. The pipe outer diameter detection device according to claim 6, characterized in that: the LED lamp also comprises a controller, wherein the first light source (1), the second light source (2), the third light source (3) and the fourth light source (4) are electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803068.5U CN215725731U (en) | 2021-08-03 | 2021-08-03 | Pipe outer diameter detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121803068.5U CN215725731U (en) | 2021-08-03 | 2021-08-03 | Pipe outer diameter detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215725731U true CN215725731U (en) | 2022-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121803068.5U Active CN215725731U (en) | 2021-08-03 | 2021-08-03 | Pipe outer diameter detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215725731U (en) |
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2021
- 2021-08-03 CN CN202121803068.5U patent/CN215725731U/en active Active
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Address after: 528000 No. 11, east side of dengdong Road, Longjiang community, Longjiang Town, Shunde District, Foshan City, Guangdong Province (residence declaration) Patentee after: Guangdong Kaihong Intelligent Equipment Co.,Ltd. Address before: 528000 No. 11, east side of dengdong Road, Longjiang community, Longjiang Town, Shunde District, Foshan City, Guangdong Province (residence declaration) Patentee before: Guangdong Banhao Intelligent Equipment Co.,Ltd. |