Glass bottle neck appearance detection device
By combining the lighting source and imaging lens group with a rotating worktable detection device, the accuracy and efficiency issues of glass bottle bottleneck shape detection are solved, and high-precision three-dimensional modeling and automated detection are achieved, which is suitable for the shape detection of liquor glass bottles.
Patent Information
- Application Number
- CN202422662861.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-09-12
- Estimated Expiration
- 2034-11-01
AI Technical Summary
In the existing technology, the detection of the shape of the bottleneck of the glass bottle has problems with low measurement precision, accuracy and efficiency. In particular, it is difficult to achieve high-precision and efficient measurement in the detection of the shape of the liquor glass bottle.
The detection device consists of an illumination light source, a rotating worktable, an imaging lens group and an imaging camera. It outputs an illumination beam to form an image and performs image processing. Combined with the rotation of the rotating worktable, multiple images are collected and stitched together to achieve three-dimensional modeling and accurately detect the shape of the glass bottle bottleneck.
It realizes precise detection of the shape of glass bottle bottlenecks, improves measurement accuracy and efficiency, can automatically and quickly obtain parameters such as bottleneck height, diameter, and slot, supports 3D modeling, and is suitable for the research and development of technologies such as virtual bottle caps.
Smart Images
Figure CN223332351U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of glass bottle bottleneck shape detection, in particular to a glass bottle bottleneck shape detection device. Background Art
[0002] In the liquor industry, bottle neck shape inspection is a crucial step in bottle shape testing. Currently, caliper measurement is widely used for this purpose. However, due to the specific characteristics of liquor bottles, measurement accuracy, precision, and efficiency of the neck region present significant challenges. Utility Model Content
[0003] In order to overcome the defects of the prior art, the utility model provides a device for detecting the shape of the bottleneck of a glass bottle, which can accurately detect the shape of the bottleneck of a glass bottle.
[0004] The purpose of this utility model is achieved through the following technical solutions:
[0005] A device for detecting the shape of a glass bottle bottleneck comprises an illumination light source for outputting an illumination beam, a rotating worktable for placing the glass bottle to be tested, an imaging camera provided with an imaging lens assembly, and a host computer electrically connected to the imaging camera. The illumination beam output by the illumination light source propagates toward the imaging lens assembly, and the bottleneck of the glass bottle to be tested is located on the propagation path of the illumination beam.
[0006] The beneficial effects of adopting the above technical solution are as follows: after the glass bottle to be tested is placed on the rotating workbench, the illumination light source outputs an illumination beam, so that the image of the glass bottle bottleneck is imaged on the imaging camera after passing through the imaging lens group. The camera image results collected by the imaging camera can be handed over to the host computer for processing. The host computer can use the single camera image to extract the outer contour of the glass bottle bottleneck, so as to facilitate the provision of measurement results such as bottleneck height, bottle mouth diameter, card slot diameter, card slot length and chamfer. At the same time, the rotating workbench rotates, and multiple images of the glass bottle bottleneck can be continuously collected for splicing, thereby facilitating the acquisition of three-dimensional modeling of the glass bottle bottleneck to be tested, which is conducive to the precise detection of the shape of the glass bottle bottleneck.
[0007] In one embodiment, the illumination light source is a planar white light source.
[0008] The beneficial effect of adopting the above technical solution is that the lighting source can output a white parallel light beam.
[0009] In one embodiment, the rotary table is a rotary jaw.
[0010] The beneficial effect of adopting the above technical solution is that the rotary worktable can clamp the glass bottle to prevent the glass bottle from moving relative to the rotary worktable during the detection process or the rotation process, thereby facilitating improved detection accuracy.
[0011] In one embodiment, the imaging lens assembly is a bi-telecentric lens.
[0012] In one embodiment, the magnification of the imaging lens assembly is M≥p / 5d, where p is the detection accuracy and d is the camera pixel size.
[0013] The beneficial effect of adopting the above technical solution is that the arrangement is such that the effective detection image area occupies at least 5 pixels on the imaging camera.
[0014] In one embodiment, the axis of the emitting end of the illumination light source coincides with the axis of the receiving end of the imaging lens assembly, and the emitting end of the illumination light source faces the receiving end of the imaging lens assembly.
[0015] The beneficial effect of adopting the above technical solution is: such an arrangement ensures that the illumination light beam output by the illumination light source is transmitted toward the imaging lens assembly.
[0016] In one embodiment, the illumination light source and the imaging lens assembly are both arranged horizontally, and the rotating workbench is arranged vertically.
[0017] In one embodiment, the device for detecting the shape of a glass bottle neck includes a horizontally arranged linear module, and the upper end of a slider of the linear module is fixedly connected to a rotating workbench.
[0018] The beneficial effects of adopting the above technical solution are as follows: the linear module can move the rotary worktable out of the detection area between the illumination light source and the imaging lens group, so as to facilitate the placement of the glass bottle to be tested on the rotary worktable outside the detection area, and the glass bottle to be tested can be moved to the detection area after being placed; at the same time, the linear module can also adjust the horizontal position of the glass bottle to be tested to ensure that the bottleneck of the glass bottle is located in the propagation path of the illumination light beam.
[0019] In one embodiment, the moving direction of the slider on the linear module is perpendicular to the propagation direction of the illumination light beam.
[0020] In one embodiment, the device for detecting the shape of a glass bottle neck includes a controller electrically connected to an illumination light source, a rotary table, a linear module, and an imaging camera.
[0021] The beneficial effect of adopting the above technical solution is that such an arrangement facilitates the operation of components such as the lighting source, the rotary workbench, the linear module and the imaging camera.
[0022] The beneficial effects of the present invention are:
[0023] After the glass bottle to be tested is placed on the rotating workbench, the illumination light source outputs an illumination beam so that the image of the glass bottle bottleneck is formed on the imaging camera after passing through the imaging lens group. The camera image results collected by the imaging camera can be handed over to the host computer for processing. The host computer can use the single camera image to extract the outer contour of the glass bottle bottleneck to facilitate the measurement results of the bottleneck height, bottle mouth diameter, card slot diameter, card slot length and chamfer. At the same time, the rotating workbench rotates and can continuously collect multiple images of the glass bottle bottleneck for splicing, thereby facilitating the acquisition of three-dimensional modeling of the glass bottle bottleneck to be tested, which is conducive to the precise detection of the shape of the glass bottle bottleneck. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The present invention will be described in more detail below based on embodiments with reference to the accompanying drawings.
[0025] in:
[0026] Figure 1 Shows the principle diagram of the utility model;
[0027] Figure 2 Shows a schematic structural diagram of the utility model;
[0028] In the drawings, like reference numerals are used for like parts, but the drawings are not necessarily true to scale.
[0029] Reference numerals:
[0030] 1-light source, 2-rotating workbench, 3-imaging lens group, 4-imaging camera, 5-host computer, 6-linear module, 7-glass bottle to be tested. DETAILED DESCRIPTION
[0031] The present invention will be further described below with reference to the accompanying drawings.
[0032] The utility model provides a device for detecting the shape of the bottleneck of a glass bottle. Figure 1 and Figure 2 As shown, it includes an illumination light source 1 for outputting an illumination beam, a rotating worktable 2 for placing a glass bottle 7 to be tested, an imaging camera 4 provided with an imaging lens group 3, and a host computer 5 electrically connected to the imaging camera 4; wherein, the illumination beam output by the illumination light source 1 propagates toward the imaging lens group 3, and the bottleneck of the glass bottle 7 to be tested is located on the propagation path of the illumination beam.
[0033] It can be understood that after the glass bottle 7 to be tested is placed on the rotating workbench 2, the lighting light source 1 outputs an illumination beam so that the image of the glass bottle neck is imaged on the imaging camera 4 after passing through the imaging lens group 3. The camera image result acquired by the imaging camera 4 can be handed over to the host computer 5 for processing. The host computer 5 can use the single image of the camera to run the glass bottle neck analysis algorithm to extract the outer contour of the glass bottle neck, so as to facilitate the provision of measurement results such as the bottleneck height, bottle mouth diameter, card slot diameter, card slot length and chamfer. At the same time, the rotating workbench 2 rotates and can continuously acquire multiple images of the glass bottle neck for splicing, thereby facilitating the acquisition of three-dimensional modeling of the bottleneck of the glass bottle 7 to be tested, which is conducive to the precise detection of the shape of the glass bottle neck.
[0034] It should be noted that both the illumination light source 1 and the imaging camera 4 can be mounted on a mounting bracket with adjustable height and angle to facilitate adjustment of the height and angle of the illumination light source 1 and the imaging camera 4, thereby ensuring that the illumination light beam output by the illumination light source 1 propagates toward the imaging lens group 3, and that the bottleneck of the glass bottle 7 to be tested is located on the propagation path of the illumination light beam; in addition, the illumination light source 1 and the imaging camera 4 are respectively located on both sides of the rotating workbench 2.
[0035] It should also be noted that the bottle bottleneck analysis algorithm includes the following steps:
[0036] The technical indicators of the imaging lens group 3 and the imaging camera 4 are fixed, and the glass bottle neck shape detection device is calibrated using a cubic calibration object of known size; wherein the calibration quantity is the spatial size corresponding to each pixel;
[0037] Collecting the bottle neck image and performing binarization processing on the bottle neck image to obtain the outer contour image of the bottle neck;
[0038] Using the calibration results, the bottleneck height, bottle mouth diameter, slot diameter, slot length and chamfer are extracted from the bottleneck outer contour image.
[0039] Multiple bottleneck contour images are collected and three-dimensional contours are constructed through Radon transform.
[0040] It should also be noted that the cube calibration object is measured by a vernier caliper, and the measurement accuracy must reach ±0.02mm.
[0041] In one embodiment, the illumination light source 1 is a planar white light source capable of outputting a white parallel light beam.
[0042] In one embodiment, the rotary table 2 is a rotary clamp.
[0043] It is understandable that the rotary table 2 can clamp the glass bottle to prevent the glass bottle from moving relative to the rotary table 2 during the detection process or the rotation process, thereby facilitating improved detection accuracy.
[0044] In one embodiment, the imaging lens assembly 3 is a bi-telecentric lens, and the magnification of the imaging lens assembly 3 is M≥p / 5d, where p is the detection accuracy and d is the camera pixel size.
[0045] It is understandable that, with such an arrangement, the image area for effective detection can occupy at least 5 pixels on the imaging camera 4 .
[0046] In one embodiment, the axis of the emitting end on the illumination light source 1 coincides with the axis of the receiving end on the imaging lens assembly 3, and the emitting end of the illumination light source 1 faces the receiving end of the imaging lens assembly 3 to ensure that the illumination light beam output by the illumination light source 1 is transmitted toward the imaging lens assembly 3.
[0047] In one embodiment, the illumination light source 1 and the imaging lens assembly 3 are both arranged horizontally, and the rotating workbench 2 is arranged vertically.
[0048] In one embodiment, the glass bottle neck shape detection device includes a horizontally arranged linear module 6, the upper end of the slider of the linear module 6 is fixedly connected to the rotating workbench 2, and the moving direction of the slider on the linear module 6 is perpendicular to the propagation direction of the illumination light beam.
[0049] It is understandable that the linear module 6 can move the rotary worktable 2 out of the detection area between the illumination light source 1 and the imaging lens group 3 to facilitate the placement of the glass bottle 7 to be tested on the rotary worktable 2 outside the detection area, and after the glass bottle 7 to be tested is placed, the glass bottle 7 to be tested can be moved to the detection area; at the same time, the linear module 6 can also adjust the horizontal position of the glass bottle 7 to ensure that the bottleneck of the glass bottle is located in the propagation path of the illumination light beam.
[0050] In one embodiment, the device for detecting the shape of a glass bottle neck includes a controller electrically connected to the illumination light source 1, the rotary table 2, the linear module 6 and the imaging camera 4; wherein the controller can be a PCB board equipped with a C51 single chip microcomputer.
[0051] It is understandable that such an arrangement can facilitate the operation of components such as the lighting source 1 , the rotary workbench 2 , the linear module 6 and the imaging camera 4 .
[0052] In summary, the present invention realizes high-definition imaging of the bottleneck contour through planar illumination light combined with a double telecentric lens, that is, optical imaging means are used to perform non-contact precision detection of the bottleneck of the glass bottle, so as to obtain the detection results of the bottleneck height, bottle mouth diameter, card slot diameter, card slot length and chamfer at one time, and simultaneously complete the three-dimensional modeling of the bottleneck, thereby facilitating the research and development of technologies such as virtual bottle caps; in addition, the present invention has the advantages of high degree of automation, high detection accuracy and high detection efficiency.
[0053] In the description of the present invention, it should be understood that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0054] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely illustrative of the principles and applications of the present invention. It should be understood that many modifications may be made to the illustrative embodiments, and that other arrangements may be devised, without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in ways other than those described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be employed in conjunction with other described embodiments.
Claims
1. A device for detecting the shape of a glass bottle neck, characterized in that: The invention comprises an illumination light source (1) for outputting an illumination light beam, a rotating worktable (2) for placing a glass bottle (7) to be tested, an imaging camera (4) provided with an imaging lens group (3), and a host computer (5) electrically connected to the imaging camera (4); wherein the illumination light beam output by the illumination light source (1) propagates toward the imaging lens group (3), and the bottleneck of the glass bottle (7) to be tested is located on the propagation path of the illumination light beam.
2. A device for detecting the shape of a glass bottle neck according to claim 1, characterized in that: The illumination light source (1) is a planar white light source.
3. The device for detecting the shape of a glass bottle neck according to claim 1, characterized in that: The rotary workbench (2) is a rotary clamp.
4. A device for detecting the shape of a glass bottle neck according to claim 1, characterized in that: The imaging lens group (3) is a double telecentric lens.
5. The device for detecting the shape of a glass bottle neck according to claim 4, characterized in that: The magnification of the imaging lens group (3) is M≥p / 5d, wherein p is the detection accuracy and d is the camera pixel size.
6. The device for detecting the shape of a glass bottle neck according to claim 1, characterized in that: The axis of the emitting end of the illumination light source (1) coincides with the axis of the receiving end of the imaging lens assembly (3), and the emitting end of the illumination light source (1) faces the receiving end of the imaging lens assembly (3).
7. A device for detecting the shape of a glass bottle neck according to claim 6, characterized in that: The illumination light source (1) and the imaging lens group (3) are both arranged horizontally, and the rotating workbench (2) is arranged vertically.
8. The device for detecting the shape of a glass bottle neck according to claim 7, characterized in that: It comprises a horizontally arranged linear module (6), wherein the upper end of a slider of the linear module (6) is fixedly connected to the rotary workbench (2).
9. The device for detecting the shape of a glass bottle neck according to claim 8, characterized in that: The moving direction of the slider on the linear module (6) is perpendicular to the propagation direction of the illumination light beam.
10. The device for detecting the shape of a glass bottle neck according to claim 9, characterized in that: It comprises a controller, wherein the controller is electrically connected to the illumination light source (1), the rotary workbench (2), the linear module (6) and the imaging camera (4).