Double-station visual inspection device

Abstract

The utility model relates to the field of visual inspection, and discloses a double-station visual inspection device, which comprises a four-side reflecting prism which is provided with a first ridge line, a second ridge line, a third ridge line and a fourth ridge line which are reversely and sequentially arranged clockwise, and four ridge surfaces of the four-side reflecting prism are fully reflecting surfaces; the first detection camera and the second detection camera are arranged on the two opposite sides of the four-side reflecting prism, the lens center line of the first detection camera penetrates through the first ridge line and is perpendicular to the first ridge line, and the lens center line of the second detection camera penetrates through the second ridge line and is perpendicular to the second ridge line; one side of the second ridge line is provided with a first detection station used for placing a workpiece, and one side of the fourth ridge line is provided with a second detection station used for placing a workpiece. According to the double-station visual detection device, the detection efficiency and the detection accuracy can be further improved.

Description

Technical Field

[0001] The utility model relates to the field of vision detection, in particular to a double-station vision detection device. Background Art

[0002] The current vision detection device includes a detection camera and a supplementary light source. The supplementary light source illuminates the top surface of the workpiece, and then the detection camera is inclined relative to the workpiece and takes a picture of the top surface of the workpiece to detect whether there are defects on the top surface of the workpiece. The vision detection device can only take pictures and detect one workpiece at a time, and the photographing angle is fixed, resulting in possible difficulty in detecting defects on the top surface of the workpiece.

[0003] In view of this, it is necessary to design a double-station vision detection device to further improve the detection efficiency and accuracy.

[0004] The above information is given as background information only to assist in understanding the present disclosure, and does not determine or admit whether any of the above content can be used as the prior art relative to the present disclosure. Summary of the Utility Model

[0005] The utility model provides a double-station vision detection device to further improve the detection efficiency and accuracy.

[0006] To achieve the above object, the utility model provides the following technical solutions:

[0007] A double-station vision detection device includes:

[0008] A four-sided reflecting prism having a first ridge line, a second ridge line, a third ridge line, and a fourth ridge line arranged in a clockwise direction in sequence, and all four ridge faces of the four-sided reflecting prism are total reflection faces;

[0009] A first detection camera and a second detection camera are arranged on opposite sides of the four-sided reflecting prism. The lens center line of the first detection camera passes through the first ridge line and is perpendicular to the first ridge line. The lens center line of the second detection camera passes through the second ridge line and is perpendicular to the second ridge line. A first detection station for placing a workpiece is provided on one side of the second ridge line, and a second detection station for placing a workpiece is provided on one side of the fourth ridge line;

[0010] One of the ridge faces can reflect the image of the workpiece on the first detection station to the first detection camera, and the other ridge face can reflect the image of the workpiece on the first detection station to the second detection camera; the third ridge face can reflect the image of the workpiece on the second detection station to the first detection camera, and the fourth ridge face can reflect the image of the workpiece on the second detection station to the second detection camera.

[0011] Optionally, telecentric lenses are provided at one end of the first detection camera close to the four-sided reflecting prism and one end of the second detection camera close to the four-sided reflecting prism.

[0012] Optionally, the double-station vision detection device is further provided with a first annular supplementary light source, which is arranged between the first detection camera and the four-sided reflecting prism, and the first annular supplementary light source is used to emit light from two prism surfaces close to the first detection camera;

[0013] The center line of the first annular supplementary light source coincides with the center line of the lens of the first detection camera.

[0014] Optionally, the first annular supplementary light source includes an annular circuit board and LED lamp beads mounted on the annular circuit board.

[0015] Optionally, the double-station vision detection device is further provided with a second annular supplementary light source, which is arranged between the second detection camera and the four-sided reflecting prism, and the second annular supplementary light source is used to emit light from two prism surfaces close to the second detection camera;

[0016] The center line of the second annular supplementary light source coincides with the center line of the lens of the second detection camera.

[0017] Optionally, a coaxial light source is further arranged between the first detection camera and the telecentric lens;

[0018] The coaxial light source includes a beam splitter located between the first detection camera and the telecentric lens, and a point light source arranged on one side of the beam splitter; the beam splitter is inclined 45° relative to the center line of the telecentric lens, and the light emitted by the point light source is reflected by the beam splitter and then shoots towards the four-sided reflecting prism along the telecentric lens.

[0019] Optionally, in a direction perpendicular to the extending direction of the four-sided reflecting prism, the cross-section of the four-sided reflecting prism is a square.

[0020] Optionally, negative pressure adsorption platforms for fixing workpieces are provided at both the first detection station and the second detection station;

[0021] The negative pressure adsorption platforms are symmetrically arranged with respect to a set central symmetry plane, and both the second ridge line and the fourth ridge line are located in the set central symmetry plane.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The double-station vision inspection device provided by the present utility model is provided with a four-sided reflecting prism. The first inspection camera can inspect the workpiece on the first inspection station through one prism surface, and the second inspection camera can inspect the workpiece on the first inspection station through another prism surface, so that the top surface of the workpiece can be photographed and inspected from two directions, and the defects on the top surface of the workpiece can be detected more accurately. In addition, the first inspection camera can simultaneously inspect the workpiece on the second inspection station through the third prism surface, and the second inspection camera can simultaneously inspect the workpiece on the second inspection station through the fourth prism surface. The double-station vision inspection device of this embodiment can simultaneously inspect two workpieces, and can photograph and inspect the same workpiece from two angles, effectively improving the inspection efficiency and the accuracy of inspection.

[0024] The present utility model has other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent detailed description, or will be described in detail in the accompanying drawings incorporated herein and the subsequent detailed description. These accompanying drawings and detailed description are used together to explain the specific principles of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0026] Figure 1 It is a schematic installation structure diagram of the double-station vision inspection device provided by the embodiment of the present utility model.

[0027] Reference numerals: 1, four-sided reflecting prism; 11, first ridge line; 12, second ridge line; 13, third ridge line; 14, fourth ridge line; 101, first inspection station; 102, second inspection station; 2, first inspection camera; 3, second inspection camera; 4, first annular supplementary light source; 5, second annular supplementary light source; 6, coaxial light source; 61, beam splitter; 62, point light source; 100, negative pressure adsorption table. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] To describe in detail the possible application scenarios, technical principles, specific implementable solutions, achievable purposes and effects, etc. of the present application, the following will be described in detail in conjunction with the specific examples listed and the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, so they are only examples and cannot be used to limit the protection scope of the present application.

[0029] References to "embodiments" in this document mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The term "embodiment" appearing at various positions in the specification does not necessarily refer to the same embodiment, nor is it particularly limited to its independence or relevance to other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in each embodiment can be combined in any manner to form corresponding implementable technical solutions.

[0030] Unless otherwise defined, the meanings of the technical terms used herein are the same as those commonly understood by those skilled in the technical field to which this application belongs; the use of the relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0031] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: there is A, there is B, and there is both A and B at the same time. In addition, the character " / " in this document generally represents an "or" logical relationship between the associated objects before and after.

[0032] In this application, terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantitative, primary-secondary, or sequential relationship between these entities or operations.

[0033] Without further limitation, in this application, the expressions "including", "comprising", "having", or other similar expressions used in a statement are intended to cover non-exclusive inclusion. These expressions do not exclude the possibility that there may be additional elements in the process, method, or product including the stated elements, so that a 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 a process, method, or product.

[0034] Similar to the understanding in the "Examination Guidelines", in this application, expressions such as "greater than", "less than", "exceeding", etc. are understood not to include the number itself; expressions such as "above", "below", "within", etc. are understood to include the number itself. In addition, in the description of the embodiments of this application, the meaning of "multiple" is two or more (including two), and similar expressions related to "many", such as "multiple groups", "multiple times", etc., are understood in the same way, unless otherwise specifically defined.

[0035] In the description of the embodiments of the present application, the spatially related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "perpendicular", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the specific embodiment or the drawings. It is only for the convenience of describing the specific embodiments of the present application or for the reader's understanding, rather than indicating or implying 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 construed as a limitation to the embodiments of the present application.

[0036] Unless otherwise clearly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "coupled", "fixed", "set", etc. should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two components or the interaction relationship between two components. For those skilled in the art to which the present application pertains, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0037] In view of the defects existing in the above-mentioned existing vision detection devices, the applicant, based on years of rich practical experience and professional knowledge in the design and manufacture of such products, and in cooperation with the application of theory, actively conducts research and innovation, hoping to create a technology that can solve the defects in the existing technology, making the vision detection device more practical. After continuous research, design, and repeated sample making and improvement, the present utility model with practical value has finally been created.

[0038] Please refer to Figure 1 , an embodiment of the present utility model provides a double-station vision detection device, including: a four-sided reflecting prism 1, having a first ridge line 11, a second ridge line 12, a third ridge line 13, and a fourth ridge line 14 arranged in a clockwise direction in sequence, and all four ridge faces of the four-sided reflecting prism 1 are total reflection faces; the four-sided reflecting prism 1 can be a square or a parallelogram.

[0039] The first detection camera 2 and the second detection camera 3 are arranged on opposite sides of the four-sided reflection prism 1. The center line of the lens of the first detection camera 2 passes through the first ridge line 11 and is perpendicular to the first ridge line 11. The center line of the lens of the second detection camera 3 passes through the second ridge line 12 and is perpendicular to the second ridge line. On one side of the second ridge line 12, there is a first detection station 101 for placing workpieces, and on one side of the fourth ridge line, there is a second detection station 102 for placing workpieces; one prism surface can reflect the image of the workpiece on the first detection station 101 to the first detection camera 2, and the other prism surface can reflect the image of the workpiece on the first detection station 101 to the second detection camera 3; the third prism surface can reflect the image of the workpiece on the second detection station 102 to the first detection camera 2, and the fourth prism surface can reflect the image of the workpiece on the second detection station 102 to the second detection camera 3. As Figure 1 shown, the dotted lines are the paths of the light rays. From the direction of the dotted lines, it can be seen that the first detection camera 2 can simultaneously detect the upper and lower workpieces, and the second detection camera 3 can simultaneously detect the upper and lower workpieces. In addition, as Figure 1 shown, the first detection camera 2 is equivalent to taking a picture of the workpiece on the top first detection station 102 by tilting to the right, and the second detection camera 3 is equivalent to taking a picture of the workpiece on the first detection station 102 by tilting to the left, which can more easily detect the defects of the workpiece and improve the accuracy of the detection results.

[0040] Optionally, both the end of the first detection camera 2 close to the four-sided reflection prism 1 and the end of the second detection camera 3 close to the four-sided reflection prism 1 are provided with telecentric lenses. The telecentric lens can keep the magnification of the obtained image unchanged within a certain object distance range, and the image distortion degree is lower, further improving the accuracy of the detection.

[0041] Optionally, the double-station vision detection device is further provided with a first annular supplementary light source 4. The first annular supplementary light source 4 is arranged between the first detection camera 2 and the four-sided reflection prism 1, and the first annular supplementary light source 4 is used to emit light rays from two prism surfaces close to the first detection camera 2; the center line of the first annular supplementary light source 4 coincides with the center line of the lens of the first detection camera 2. The light rays of the first annular supplementary light source 4 are projected onto one prism surface and reflected towards the first detection station 101, thereby illuminating the workpiece on the first detection station 101; the light rays of the first annular supplementary light source are projected onto the other prism surface and reflected towards the second detection station 102, thereby illuminating the workpiece on the second detection station 102.

[0042] Optionally, the first annular supplementary light source 4 includes an annular circuit board and LED lamp beads installed on the annular circuit board. The LED lamp beads are arranged in an annular array, further improving the illumination effect on the workpiece.

[0043] Optionally, the double-station vision detection device is further provided with a second annular supplementary light source 5. The second annular supplementary light source 5 is arranged between the second detection camera 3 and the four-sided reflection prism 1, and the second annular supplementary light source 5 is used to emit light from two prism faces close to the second detection camera 3; the center line of the second annular supplementary light source 5 coincides with the center line of the lens of the second detection camera 3.

[0044] Specifically, the light emitted by the first annular supplementary light source 4 is irradiated obliquely to the right on the workpiece at the first detection station 101, and the light emitted by the second annular supplementary light source 5 is irradiated obliquely to the left on the workpiece at the first detection station 101, so that the workpiece is illuminated more fully. Similarly, the light emitted by the first annular supplementary light source 4 is irradiated obliquely to the left on the workpiece at the second detection station 102, and the light emitted by the second annular supplementary light source 5 is irradiated obliquely to the right on the workpiece at the second detection station 102, so that the workpiece is illuminated more fully, that is, the illumination effect on the workpiece can also be significantly improved.

[0045] Optionally, a coaxial light source 6 is further arranged between the first detection camera 2 and the telecentric lens; the coaxial light source 6 includes a beam splitter 61 located between the first detection camera 2 and the telecentric lens, and a point light source 62 arranged on one side of the beam splitter 61; the beam splitter 61 is inclined 45° relative to the center line of the telecentric lens, and the light emitted by the point light source 62 is reflected by the beam splitter 61 and then irradiates along the telecentric lens to the four-sided reflection prism 1. The coaxial light source 6 can further supplement light and further improve the illumination effect on the workpiece.

[0046] In a specific embodiment, in the direction perpendicular to the extension direction of the four-sided reflection prism 1, the cross section of the four-sided reflection prism 1 is a square.

[0047] Optionally, a negative pressure adsorption table 100 for fixing the workpiece is arranged at both the first detection station 101 and the second detection station 102; the negative pressure adsorption tables 100 are symmetrically arranged with respect to the set central symmetry plane, and both the second ridge line 12 and the fourth ridge line 14 are located in the set central symmetry plane. The negative pressure adsorption table 100 adsorbs and fixes the workpiece under negative pressure, which can effectively fix the workpiece and prevent the workpiece from falling.

[0048] Finally, it should be noted that although the above embodiments have been described in the text and drawings of the specification of the present application, the patent protection scope of the present application cannot be limited thereby. Any technical solutions obtained by equivalent structure or equivalent process substitution or modification based on the essential concept of the present application and using the content recorded in the text and drawings of the specification of the present application, as well as the technical solutions of the above embodiments directly or indirectly implemented in other related technical fields, are all included in the patent protection scope of the present application.

Claims

1. A double-station vision inspection device, characterized in that, Including: A four-sided reflecting prism (1) having a first edge line (11), a second edge line (12), a third edge line (13), and a fourth edge line (14) arranged in a clockwise reverse order, and all four prism faces of the four-sided reflecting prism (1) are total reflection faces; A first detection camera (2) and a second detection camera (3) are arranged on opposite sides of the four-sided reflecting prism (1). The center line of the lens of the first detection camera (2) passes through the first edge line (11) and is perpendicular to the first edge line (11). The center line of the lens of the second detection camera (3) passes through the second edge line (12) and is perpendicular to the second edge line. And a first detection station (101) for placing a workpiece is provided on one side of the second edge line (12), and a second detection station (102) for placing a workpiece is provided on one side of the fourth edge line; One of the prism faces can reflect the image of the workpiece on the first detection station (101) to the first detection camera (2), and another prism face can reflect the image of the workpiece on the first detection station (101) to the second detection camera (3); the third prism face can reflect the image of the workpiece on the second detection station (102) to the first detection camera (2), and the fourth prism face can reflect the image of the workpiece on the second detection station (102) to the second detection camera (3).

2. The double-station vision inspection device according to claim 1, wherein Telecentric lenses are provided at one end of the first detection camera (2) close to the four-sided reflecting prism (1) and at one end of the second detection camera (3) close to the four-sided reflecting prism (1).

3. The double-station vision inspection device according to claim 1, characterized in that, A first annular supplementary light source (4) is also provided. The first annular supplementary light source (4) is arranged between the first detection camera (2) and the four-sided reflecting prism (1), and the first annular supplementary light source (4) is used to emit light from two prism faces close to the first detection camera (2); The center line of the first annular supplementary light source (4) coincides with the center line of the lens of the first detection camera (2).

4. The double-station vision inspection device according to claim 3, wherein, The first annular supplementary light source (4) includes an annular circuit board and LED lamp beads mounted on the annular circuit board.

5. The double-station vision inspection device according to claim 1, wherein, A second annular supplementary light source (5) is also provided. The second annular supplementary light source (5) is arranged between the second detection camera (3) and the four-sided reflecting prism (1), and the second annular supplementary light source (5) is used to emit light from two prism faces close to the second detection camera (3); The center line of the second annular supplementary light source (5) coincides with the center line of the lens of the second detection camera (3).

6. The double-station vision inspection device according to claim 2, wherein A coaxial light source (6) is also provided between the first detection camera (2) and the telecentric lens; The coaxial light source (6) includes a beam splitter (61) located between the first detection camera (2) and the telecentric lens, and a point light source (62) provided on one side of the beam splitter (61); the beam splitter (61) is inclined 45° relative to the center line of the telecentric lens, and the light emitted by the point light source (62) is reflected by the beam splitter (61) and then shoots along the telecentric lens towards the four-sided reflecting prism (1).

7. The double-station vision inspection device according to claim 1, wherein In a direction perpendicular to the extension direction of the four-sided reflecting prism (1), the cross-section of the four-sided reflecting prism (1) is square.

8. The double-station vision inspection device according to claim 1, wherein Both the first inspection station (101) and the second inspection station (102) are provided with a negative pressure adsorption table (100) for fixing workpieces. The negative pressure adsorption table (100) is symmetrically arranged with respect to a set central symmetry plane, and both the second ridge line (12) and the fourth ridge line (14) are located in the set central symmetry plane.

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