Bottle-shaped workpiece detection device and detection line

Abstract

The utility model relates to the technical field of machine vision detection, and discloses a bottle-shaped workpiece detection device and a detection line, and the device comprises a conveyor belt which is used for intermittently conveying bottle-shaped workpieces; the protective barrel is provided with a material passing groove for the bottle-shaped workpiece to penetrate through, and the inner barrel surface of the protective barrel is a diffuse reflection surface; the infrared light source is used for illuminating the bottle-shaped workpieces which are positioned on the conveyor belt and in the protective cylinder; the infrared light source and the first detection camera are mounted on the two opposite sides of the conveying belt; a lens of the first detection camera directly faces the infrared light source, and the first detection camera is used for photographing the bottle-shaped workpiece illuminated by the infrared light source so as to detect defects on the inner wall of the bottle-shaped workpiece. The bottle-shaped workpiece detection device and the detection line can detect the defects on the inner wall of the bottle-shaped workpiece.

Description

Technical Field

[0001] The utility model relates to the technical field of machine vision detection, in particular to a bottle-shaped workpiece detection device and a detection line. Background Art

[0002] Current visual inspection devices consist of a light source and a detection camera. The light source illuminates the workpiece surface, and the detection camera then takes a picture of the illuminated workpiece to detect surface defects. However, when inspecting bottle-shaped workpieces, existing visual inspection devices cannot detect defects on the inner wall of the bottle. They can only detect defects on the outer surface of the bottle, which does not meet the actual production inspection needs.

[0003] In view of this, it is necessary to design a bottle-shaped workpiece inspection device and an inspection line to detect defects on the inner wall of the bottle-shaped workpiece.

[0004] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Utility Model Content

[0005] The utility model provides a bottle-shaped workpiece detection device and a detection line for detecting defects on the inner wall of the bottle-shaped workpiece.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A bottle-shaped workpiece detection device, comprising:

[0008] Conveyor belt, used for intermittent conveying of bottle-shaped workpieces;

[0009] The protective cylinder is provided with a material passing chute for the bottle-shaped workpiece to pass through, and the inner cylinder surface of the protective cylinder is a diffuse reflection surface;

[0010] an infrared light source, for illuminating the bottle-shaped workpiece located on the conveyor belt and in the protective cylinder;

[0011] A first inspection camera, the infrared light source and the first inspection camera are installed on opposite sides of the conveyor belt; the lens of the first inspection camera is facing the infrared light source, and is used to take pictures of the bottle-shaped workpiece illuminated by the infrared light source to detect defects on the inner wall of the bottle-shaped workpiece.

[0012] Optionally, a ring-shaped light source is further provided at the top of the protective tube to illuminate the bottle cap portion of the bottle-shaped workpiece;

[0013] A second detection camera is further provided on the top of the protection tube, and a lens of the second detection camera is facing the bottle cap portion of the bottle-shaped workpiece in the protection tube.

[0014] Optionally, the first detection camera is located outside the protective tube, and the protective tube is provided with a detection hole, and the first detection camera faces the detection hole.

[0015] Optionally, the infrared light source includes a first circuit board, infrared lamp beads arrayed on the first circuit board, and a diffusion plate installed on the light-emitting side of the infrared lamp beads;

[0016] The diffusion plate is located in the protective tube, and the first circuit board and the infrared lamp beads are both located outside the protective tube; the infrared light source also includes a heat dissipation device for cooling the first circuit board.

[0017] Optionally, the annular light source includes a plurality of second circuit boards and white light beads arrayed on the second circuit boards, and the center line of the second circuit board is directly opposite to the bottle cap portion;

[0018] The center lines of all the second circuit boards intersect at a set point, and the set point is located on the center line of the protective tube.

[0019] Optionally, the conveying surface of the conveyor belt is a diffuse reflection surface.

[0020] Optionally, the bottle-shaped workpiece detection device further includes a third detection camera;

[0021] The third detection camera and the first detection camera are located on the same side of the conveyor belt, and the third detection camera is located directly below the first detection camera;

[0022] The highest point of the third detection camera is not higher than the bottom surface of the protective tube. The third detection camera takes pictures of the bottle-shaped workpiece through the bottom tube opening of the protective tube, and the conveyor belt is located between the infrared light source and the third detection camera.

[0023] Optionally, a light-blocking tooth portion extends from a side of the conveyor belt close to the infrared light source, and the light-blocking tooth portion extends horizontally in a direction close to the infrared light source;

[0024] When the bottle-shaped workpiece is photographed and inspected, the light-blocking teeth block the light that is directed toward the lens of the third inspection camera.

[0025] Optionally, the bottle-shaped workpiece detection device further includes an appearance detection device;

[0026] The surface inspection device includes a surface inspection camera for photographing the outer peripheral surface of the bottle-shaped workpiece and a peripheral illumination light source for illuminating the outer peripheral surface of the bottle-shaped workpiece; the surface inspection camera and the first inspection camera are arranged on the same side of the conveyor belt;

[0027] The appearance detection device and the protective tube are sequentially spaced apart along the conveying direction of the conveyor belt, and the appearance detection camera is electrically connected to the first detection camera.

[0028] A detection line comprises the bottle-shaped workpiece detection device as described in any one of the above items.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The utility model provides a bottle-shaped workpiece detection device, in which an infrared light source irradiates the bottle-shaped workpiece on a conveyor belt on one side, and a first detection camera photographs the bottle-shaped workpiece on the other side. Under the strong penetrating irradiation of infrared light, the first detection camera can photograph and obtain an image related to the inner wall of the bottle of the workpiece; in addition, the light scattered by the inner cylinder surface of the protective cylinder can avoid the formation of bright spots on the surface of the workpiece, so that the first detection camera can take clearer and more accurate images, and can more accurately detect whether there are defects on the inner wall of the bottle of the workpiece.

[0031] The present invention has other features and advantages, which will be apparent from the accompanying drawings and subsequent detailed descriptions incorporated herein, or will be described in detail in the accompanying drawings and subsequent detailed descriptions incorporated herein, which together serve to explain the specific principles of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 It is a top view schematic diagram of a bottle-shaped workpiece detection device provided by an embodiment of the present utility model;

[0034] Figure 2 This is a schematic cross-sectional view of a bottle-shaped workpiece detection device provided by an embodiment of the present utility model;

[0035] Figure 3 This is a schematic diagram of the three-dimensional structure of a silicon wafer inspection line provided by an embodiment of the present utility model;

[0036] Figure 4 This is a schematic cross-sectional view of another bottle-shaped workpiece detection device provided by an embodiment of the present utility model;

[0037] Figure 5This is a top view schematic diagram of a conveyor belt provided by an embodiment of the present utility model when conveying a bottle-shaped workpiece.

[0038] Figure numerals: 1. Conveyor belt; 101. Light-blocking tooth portion; 2. Protective tube; 201. Diffuse reflection surface; 202. Detection hole; 3. Infrared light source; 31. First circuit board; 32. Infrared lamp beads; 33. Diffuser plate; 34. Heat dissipation device; 4. First detection camera; 5. Ring light source; 51. Second circuit board; 52. White light lamp beads; 6. Second detection camera; 7. Third detection camera; 100. Bottle-shaped workpiece. DETAILED DESCRIPTION

[0039] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0040] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0041] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0043] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0044] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0045] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0046] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0047] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] Example 1

[0049] In light of the aforementioned deficiencies in existing visual inspection devices, the applicant, drawing upon years of extensive practical experience and expertise in the design and manufacture of such products, combined with applied theory, has actively engaged in research and innovation, hoping to develop a technology that addresses these deficiencies and thereby enhance the practicality of bottle-shaped workpiece inspection devices. Through continuous research and design, as well as repeated prototype production and refinement, the applicant has ultimately developed the present utility model, which possesses substantial practical value.

[0050] Please refer to Figures 1 to 3 The present invention provides a bottle-shaped workpiece detection device, comprising:

[0051] The conveyor belt 1 is used to intermittently transport bottle-shaped workpieces 100. The protective cylinder 2 is provided with a material chute 21 for the bottle-shaped workpieces 100 to pass through, and the inner cylinder surface 201 of the protective cylinder 2 is a diffusely reflective surface. The infrared light source 3 is used to illuminate the bottle-shaped workpieces 100 located on the conveyor belt 1 and in the protective cylinder 2. The first inspection camera 4 is mounted on opposite sides of the conveyor belt 1. The lens of the first inspection camera 4 faces the infrared light source 3 and is used to photograph the bottle-shaped workpieces 100 illuminated by the infrared light source 3 to detect defects on the inner wall of the bottle-shaped workpiece 100. Defects on the inner wall of the bottle include impurities, dirt, surface scratches, etc.

[0052] Specifically, the detection steps are as follows:

[0053] ① The conveyor belt 1 drives the bottle-shaped workpiece 100 to the set detection position in the protective cylinder 2;

[0054] ② The infrared light source 3 emits light to the right from the left side of the bottle-shaped workpiece 100, illuminating the bottle-shaped workpiece 100;

[0055] ③ The first inspection camera 4 takes a picture of the bottle-shaped workpiece 100 illuminated by infrared light on the right side of the bottle-shaped workpiece 100, and the bottle-shaped workpiece 100 blocks the infrared light directly hitting the first inspection camera 4, so that the first inspection camera 4 can take pictures to detect defects on the inner wall of the bottle-shaped workpiece 100.

[0056] It should be noted that infrared light can penetrate the workpiece well, allowing defects on the inner wall of the bottle-shaped workpiece 100 to be displayed, thereby enabling the first inspection camera 4 to take a picture and identify the displayed defects. It should also be noted that the bottle-shaped workpiece 100 is a light-transmitting workpiece, such as a plastic bottle or glass bottle, and cannot be an opaque workpiece.

[0057] It should also be noted that the inner surface 201 of the protective tube 2 is a diffuse reflection surface, thereby preventing the light emitted by the infrared light source 3 from forming bright photoelectricity on the surface of the bottle-shaped workpiece 100 after reflection, thereby making it impossible to detect defects on the inner wall of the bottle.

[0058] Optionally, a ring light source 5 is also provided at the top of the protective tube 2 to illuminate the bottle cap portion of the bottle-shaped workpiece 100; a second detection camera 6 is also provided at the top of the protective tube 2, and the lens of the second detection camera 6 is facing the bottle cap portion of the bottle-shaped workpiece 100 in the protective tube 2.

[0059] Specifically, the bottle-shaped workpiece inspection device in this embodiment can simultaneously inspect defects of the bottle cap and the inner wall of the bottle-shaped workpiece 100 in one inspection station.

[0060] Optionally, the first detection camera 4 is located outside the protective tube 2, and the protective tube 2 is provided with a detection hole 202, and the first detection camera 4 is facing the detection hole 202. The first detection camera 4 takes pictures through the detection hole 202, which can better reduce the influence of stray light and improve the accuracy of detection.

[0061] Optionally, the infrared light source 3 includes a first circuit board 31, infrared lamp beads 32 arrayed on the first circuit board 31, and a diffuser plate 33 mounted on the light-emitting side of the infrared lamp beads 32. The diffuser plate 33 is located within the protective tube 2, and both the first circuit board 31 and the infrared lamp beads 32 are located outside the protective tube 2. The infrared light source 3 also includes a heat sink 34 for cooling the first circuit board 31. The location of both the first circuit board 31 and the infrared lamp beads 32 outside the protective tube 2 effectively improves heat dissipation and prevents overheating of the infrared lamp beads 32. Furthermore, the provision of the heat sink 34 better controls the temperature of the infrared lamp beads 32. Preferably, the heat sink 34 is a water-cooled device.

[0062] Optionally, the annular light source 5 includes several second circuit boards 51 and white light lamp beads 52 arrayed on the second circuit boards, and the center line of the second circuit board 51 is facing the bottle cap portion; the center lines of all the second circuit boards 51 intersect at a set point, and the set point is on the center line of the protective tube 2, so that the light can be better focused on the bottle cap portion and the bottle cap portion can be better illuminated.

[0063] Optionally, the conveying surface of the conveyor belt 1 is a diffuse reflection surface, which can avoid the formation of light spots on the bottle-shaped workpiece 100 due to reflection.

[0064] Optionally, the bottle-shaped workpiece inspection device further includes a third inspection camera 7 ; the third inspection camera 7 and the first inspection camera 4 are located on the same side of the conveyor belt 1 , and the third inspection camera 7 is located directly below the first inspection camera 4 ; the highest point of the third inspection camera 7 is no higher than the protective tube 2 , and the third inspection camera 7 photographs the bottle-shaped workpiece 100 through the bottom opening of the protective tube 2 , with the conveyor belt 1 located between the infrared light source 3 and the third inspection camera 7 . Specifically, the third inspection camera 7 photographs the bottle-shaped workpiece 100 at different angles to obtain inspection images. By comparing the inspection images obtained by the first inspection camera 4 with the inspection images obtained by the third inspection camera 7 , it can more accurately determine whether the missing item is a defect on the inner wall of the bottle, further improving inspection accuracy.

[0065] Optionally, a light-blocking tooth portion 101 extends from the side of the conveyor belt 1 near the infrared light source 3, and the light-blocking tooth portion 101 extends horizontally in the direction close to the infrared light source 3; when the bottle-shaped workpiece 100 is photographed and inspected, the light-blocking tooth portion 101 blocks the light directly directed toward the lens of the third inspection camera 7, thereby improving the accuracy of the inspection. The light-blocking tooth portion 101 is directly arranged on the main body of the conveyor belt 1, which also sets a limit on the placement position of the bottle-shaped workpiece 100, that is, the bottle-shaped workpiece 100 and the light-blocking tooth portion 101 need to be arranged side by side. The light-blocking tooth portion 101 blocks light, preventing infrared light from directly reaching the third inspection camera 7, which improves the imaging effect of the third inspection camera 7.

[0066] Optionally, the bottle-shaped workpiece inspection device further includes a surface inspection device; the surface inspection device includes a surface inspection camera 8 for photographing the outer circumference of the bottle-shaped workpiece and a peripheral illumination light source for illuminating the outer circumference of the bottle-shaped workpiece; the surface inspection camera 8 and the first inspection camera 4 are disposed on the same side of the conveyor belt 1; the surface inspection device and the protective tube 2 are sequentially spaced apart along the conveying direction of the conveyor belt 1, and the surface inspection camera 8 is electrically connected to the first inspection camera 4. It should be noted that defects on the outer circumference of the bottle-shaped workpiece 100 are first inspected, followed by defects on the inner wall of the bottle-shaped workpiece 100. In this way, surface defects of the bottle-shaped workpiece 100 can be determined based on the inspection image obtained by the first inspection camera 4, while the remaining defects are defects on the inner wall or body of the bottle, thereby improving the inspection accuracy of the bottle-shaped workpiece 100.

[0067] Example 2

[0068] A detection line includes the bottle-shaped workpiece detection device as described in the first embodiment.

[0069] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concepts of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A bottle-shaped workpiece detection device, characterized in that: include: A conveyor belt (1) for intermittently conveying bottle-shaped workpieces (100); The protective cylinder (2) is provided with a material passage chute (21) for the bottle-shaped workpiece (100) to pass through, and the inner cylinder surface (201) of the protective cylinder (2) is a diffuse reflection surface; an infrared light source (3) for illuminating the bottle-shaped workpiece (100) located on the conveyor belt (1) and in the protective cylinder (2); A first detection camera (4), the infrared light source (3) and the first detection camera (4) are installed on opposite sides of the conveyor belt (1); the lens of the first detection camera (4) is facing the infrared light source (3), and is used to take pictures of the bottle-shaped workpiece (100) illuminated by the infrared light source (3) to detect defects on the inner wall of the bottle-shaped workpiece (100).

2. The bottle-shaped workpiece detection device according to claim 1, characterized in that: The top end of the protective tube (2) is also provided with an annular light source (5) to illuminate the bottle cap portion of the bottle-shaped workpiece (100); A second detection camera (6) is also provided on the top of the protective tube (2), and the lens of the second detection camera (6) faces the bottle cap portion of the bottle-shaped workpiece (100) in the protective tube (2).

3. The bottle-shaped workpiece detection device according to claim 1, characterized in that: The first detection camera (4) is located outside the protective tube (2), and the protective tube (2) is provided with a detection hole (202), and the first detection camera (4) faces the detection hole (202).

4. The bottle-shaped workpiece detection device according to claim 1, characterized in that: The infrared light source (3) comprises a first circuit board (31), infrared lamp beads (32) arrayed on the first circuit board (31), and a diffusion plate (33) mounted on the light-emitting side of the infrared lamp beads (32); The diffusion plate (33) is located in the protective tube (2), and the first circuit board (31) and the infrared lamp beads (32) are both located outside the protective tube (2); the infrared light source (3) also includes a heat dissipation device (34) for cooling the first circuit board (31).

5. The bottle-shaped workpiece detection device according to claim 2, characterized in that: The annular light source (5) comprises a plurality of second circuit boards (51) and white light beads (52) arranged in an array on the second circuit boards, and the center line of the second circuit board (51) faces the bottle cap portion; The center lines of all the second circuit boards (51) intersect at a set point, and the set point is located on the center line of the protective tube (2).

6. The bottle-shaped workpiece detection device according to claim 1, characterized in that: The conveying surface of the conveyor belt (1) is a diffuse reflection surface.

7. The bottle-shaped workpiece detection device according to claim 1, characterized in that: Also includes a third detection camera (7); The third detection camera (7) and the first detection camera (4) are located on the same side of the conveyor belt (1), and the third detection camera (7) is located directly below the first detection camera (4); The highest point of the third detection camera (7) is not higher than the bottom surface of the protective tube (2); the third detection camera (7) takes a picture of the bottle-shaped workpiece (100) through the bottom opening of the protective tube (2); and the conveyor belt (1) is located between the infrared light source (3) and the third detection camera (7).

8. The bottle-shaped workpiece detection device according to claim 7, characterized in that: A light-blocking tooth portion (101) extends from a side of the conveyor belt (1) close to the infrared light source (3), and the light-blocking tooth portion (101) extends horizontally in a direction close to the infrared light source (3); When the bottle-shaped workpiece (100) is photographed and inspected, the light-blocking tooth portion (101) blocks light that is directed toward the lens of the third inspection camera (7).

9. The bottle-shaped workpiece detection device according to claim 8, characterized in that: Also includes an appearance detection device; The surface inspection device comprises a surface inspection camera (8) for photographing the outer peripheral surface of the bottle-shaped workpiece and a peripheral illumination light source for illuminating the outer peripheral surface of the bottle-shaped workpiece; the surface inspection camera (8) and the first inspection camera (4) are arranged on the same side of the conveyor belt (1); The appearance detection device and the protective tube (2) are sequentially spaced along the conveying direction of the conveyor belt (1), and the appearance detection camera (8) is electrically connected to the first detection camera (4).

10. A detection line, characterized in that: The invention comprises the bottle-shaped workpiece detection device according to any one of claims 1 to 9.

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