Product inspection device

Abstract

This application relates to the field of machine vision inspection technology and discloses a product inspection device. The device includes: a first conveyor line, a flipping mechanism, a second conveyor line, a first inspection component, and a second inspection component. The first inspection component is used to photograph and inspect the top surface and surrounding surfaces of products on the first conveyor line. The second conveyor line is located at the output end of the first conveyor line, and the flipping mechanism is located between the first and second conveyor lines. The flipping mechanism has a base plate rotatably mounted along a horizontal axis, and the base plate has negative pressure holes. The base plate receives products inspected by the first inspection component and also rotates the products adsorbed and fixed on it by 180° before placing them on the second conveyor line with their bottom surfaces facing upwards. The second inspection component is located on the second conveyor line and is used to photograph and inspect the bottom surface of the product from above. Through this method, this application can effectively reduce manufacturing costs.

Description

Technical Field

[0001] This application relates to the field of machine vision inspection technology, specifically to a product inspection device. Background Technology

[0002] For visual inspection of all six sides of a product, the most complex is the bottom surface photo inspection. To enable the bottom surface of a product to be photographed, existing product inspection devices usually use a robotic arm to grasp and flip the product. The robotic arm then turns the bottom surface of the product to face another direction, and cameras positioned in the corresponding directions take photos of the bottom surface of the product for inspection.

[0003] Because robotic arms are complex and expensive, this approach undoubtedly leads to high costs for product testing equipment. Utility Model Content

[0004] In view of the above problems, this application provides a product testing device that can effectively reduce manufacturing costs.

[0005] This application provides a product testing device, including: a first conveyor line, a flipping mechanism, a second conveyor line, a first testing component, and a second testing component; the first conveyor line is used to convey products, the first testing component is disposed at the first conveyor line, and the first testing component is used to photograph and test the top surface and surrounding surfaces of the products on the first conveyor line; the second conveyor line is disposed at the output end of the first conveyor line, and the flipping mechanism is disposed between the first conveyor line and the second conveyor line; the flipping mechanism has a base plate that is rotatably disposed along a horizontal axis, and the base plate is provided with negative pressure holes, the base plate is used to receive products that have been tested by the first testing component, and to adsorb and fix the products through the negative pressure holes, the base plate is also used to rotate the adsorbed and fixed products on it by 180° and place the products on the second conveyor line so that the bottom surface of the products faces upward; the second testing component is disposed at the second conveyor line, and the second testing component is used to photograph and test the bottom surface of the products from above.

[0006] In one optional embodiment, a first conveyor line is used to convey products along a first horizontal direction, and a first inspection station and a second inspection station are sequentially arranged along the first horizontal direction on the first conveyor line; the product inspection device further includes an angle adjustment mechanism, which is located above the first conveyor line and is rotatable along a vertical axis; the angle adjustment mechanism is used to dock with the top of the product at the first inspection station and drive the product to rotate 90°; the first inspection component includes a first camera, a second camera, a third camera, a fourth camera, and a fifth camera; the first camera and the second camera are respectively located on opposite sides of the first inspection station along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction; the third camera is located above the first inspection station, and the first, second, and third cameras all face the first inspection station; the fourth camera and the fifth camera are respectively located on opposite sides of the second inspection station along the second horizontal direction, and both the fourth and fifth cameras face the second inspection station.

[0007] In one optional embodiment, the first conveyor line has a first conveying section and a second conveying section sequentially along a first horizontal direction. A first inspection station is disposed on the first conveying section, and a second inspection station is disposed on the second conveying section. The product inspection device further includes a translation mechanism and a transfer mechanism. The translation mechanism is moved along the first horizontal direction and disposed between the first inspection station and the flipping mechanism. An angle adjustment mechanism and a transfer mechanism are spaced apart on the translation mechanism along the first horizontal direction. The angle adjustment mechanism and the transfer mechanism are used to synchronously dock with the products on the first inspection station and the products on the second inspection station, respectively. The translation mechanism is used to move along the first horizontal direction toward the flipping mechanism so that the transfer mechanism transfers the product originally located at the second inspection station to the flipping mechanism, and the angle adjustment mechanism transfers the product originally located at the first inspection station to the second conveying section.

[0008] In one alternative embodiment, a fixed support is provided on one side of the second conveying section along the second horizontal direction. The translation mechanism includes a sliding seat and a lifting support. The sliding seat is slidably connected to the fixed support along the first horizontal direction, and the lifting support is lifted and lowered connected to the sliding seat. An angle adjustment mechanism and a transfer mechanism are connected to the lifting support at intervals. The lifting support is used to drive the angle adjustment mechanism and the transfer mechanism to lift and lower synchronously, so that the angle adjustment mechanism and the transfer mechanism can be synchronously docked with the products on the first inspection station and the products on the second inspection station, respectively.

[0009] In one alternative embodiment, a first stop is provided at the junction of the first conveying section and the second conveying section, and a second stop is provided at the end of the second conveying section; a first inspection station is formed in the area on the first conveying section at the front end of the first stop, and a second inspection station is formed in the area on the second conveying section at the front end of the second stop.

[0010] In one optional embodiment, the first detection component includes multiple mounting and adjusting mechanisms and multiple cameras. The multiple mounting and adjusting mechanisms are positioned at different locations on the first conveyor line, and the multiple cameras are correspondingly mounted on the multiple mounting and adjusting mechanisms. The multiple cameras are used to take pictures of the top surface and surrounding surfaces of the products on the first conveyor line. The mounting and adjusting mechanism includes a fixed base, a column, and a first slider. The fixed base is fixedly mounted relative to the first conveyor line. The column is mounted on the fixed base and extends vertically. The first slider is lifted and connected to the column, and the camera is fixed to the first slider. The first slider is provided with a first locking member, which is used to limit the connection with the column after the first slider is lifted and lowered to a predetermined height, so as to fix the first slider.

[0011] In one alternative embodiment, the installation adjustment mechanism further includes a second slider, which is vertically connected to the column and has a light source fixed on it. The second slider is provided with a second locking member, which is used to limit the connection with the column after the second slider is raised to a predetermined height, so as to fix the second slider.

[0012] In one alternative embodiment, a first conveyor line is used to convey products along a first horizontal direction, and a column is slidably connected to a fixed seat along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction; a third locking member is provided on the column, the third locking member being used to limit the connection with the fixed seat after the column slides to a predetermined position, so as to fix the column.

[0013] In one alternative embodiment, a third inspection station is provided on the second conveyor line, and a second inspection component is used to photograph and inspect the bottom surface of the product at the third inspection station. The second conveyor line has an OK output end and an NG output end. The OK output end is opposite to the third inspection station along the conveying direction of the second conveyor line, and the NG output end is offset from the third inspection station along the conveying direction of the second conveyor line. A rejection mechanism is provided between the second inspection component and the OK output end. The rejection mechanism is used to push the unqualified products to a position on the second conveyor line opposite to the NG output end, so that the second conveyor line conveys qualified products to the OK output end and unqualified products to the NG output end.

[0014] In one alternative embodiment, a material separation partition is provided between the rejecting mechanism and the OK output end, and the area on the second conveyor line opposite to the OK output end and the NG output end is separated by the material separation partition.

[0015] In the product testing device provided in this application embodiment, a first detection component is first set at the first conveyor line to take pictures of the top surface and all four sides of the products conveyed in batches on the first conveyor line. Then, a second conveyor line is set at the output end of the first conveyor line, and a flipping mechanism is set between the first and second conveyor lines. This allows the products to be transferred from the first conveyor line to the second conveyor line while being placed on the second conveyor line with their bottom surface facing up. Then, the second detection component at the second conveyor line takes pictures from above, which can easily complete the six-sided testing of the products.

[0016] Meanwhile, to simplify the structure of the flipping mechanism and reduce its manufacturing cost, a rotatable base plate is used to receive products output from the first conveyor line. Furthermore, to ensure the products are reliably fixed to the base plate and facilitate smooth flipping, negative pressure holes are created on the base plate. These holes firmly adhere the products to the base plate, preventing them from falling when the base plate flips the product. This simplification of the flipping mechanism results in a simpler overall structure for the product detection device, lower installation difficulty, and lower manufacturing costs.

[0017] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0018] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0019] Figure 1 A perspective view of the product testing device provided in the embodiments of this application;

[0020] Figure 2 A perspective view of the flipping mechanism in the product testing device provided in the embodiments of this application;

[0021] Figure 3 A side view of the product testing device provided in an embodiment of this application;

[0022] Figure 4 A top view of the product testing apparatus provided in the embodiments of this application;

[0023] Figure 5 A perspective view of the camera portion in the product testing device provided in the embodiments of this application;

[0024] Figure 6 A perspective view of the camera portion in the product testing device provided in an embodiment of this application;

[0025] Figure 7 This is a perspective view of the translation mechanism, angle adjustment mechanism, and transfer mechanism in the product testing device provided in the embodiments of this application.

[0026] The reference numerals in the detailed embodiments are as follows:

[0027] 100. Product testing equipment;

[0028] 110. First conveyor line; 1101. Guide component; 111. First inspection station; 112. Second inspection station; 113. First conveyor section; 114. Second conveyor section; 115. First stop component; 116. Second stop component;

[0029] 120. Second conveyor line; 121. Third inspection station; 122. OK output end; 123. NG output end; 124. Scrap rejection mechanism; 125. Material distribution partition;

[0030] 130. Tilting mechanism; 131. Base plate; 132. Negative pressure hole;

[0031] 140. First detection component; 1401. Mounting and adjustment mechanism; 1402. Camera; 141. First camera; 142. Second camera; 143. Third camera; 144. Fourth camera; 145. Fifth camera; 146. Mounting base; 147. Column; 1471. Third locking element; 148. First slider; 1481. First locking element; 149. Second slider; 1491. Second locking element; 1492. Light source; 1493. Shooting window;

[0032] 150. Second detection component; 151. Sixth camera;

[0033] 160. Angle adjustment mechanism;

[0034] 170. Translation mechanism; 171. Sliding seat; 172. Lifting bracket;

[0035] 180. Transfer agency;

[0036] 190. Fixed bracket. Detailed Implementation

[0037] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0039] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0040] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0041] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0042] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0043] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0045] To improve the efficiency of product inspection, this application first considers using a conveyor line to achieve batch inspection of products. Secondly, in order to achieve inspection of all six sides of the product, this application replaces the traditional robotic arm with a novel flipping mechanism to simplify the structure, facilitate deployment, and reduce costs.

[0046] Please refer to the details. Figure 1 The figure shows a perspective view of the product testing device provided in the embodiment of this application. As shown in the figure, the product testing device 100 includes: a first conveyor line 110, a second conveyor line 120, a flipping mechanism 130, a first testing component 140, and a second testing component 150.

[0047] The first conveyor line 110 and the second conveyor line 120 can be belt conveyors, roller conveyors, etc., both used to convey products. The products can be plastic bottles for packaging liquids such as laundry detergent and dish soap, or other types of products; specific details are not limited here. Figure 1 As shown, a guide 1101 can be provided at the input end of the first conveyor line 110. The guide 1101 is used to guide the input product to a designated position on the first conveyor line 110 so that the product can be photographed and inspected at the required angle. The designated position can be the center position on the first conveyor line 110, or it can be a position offset to one side. The specific position can be set according to the shooting position requirements.

[0048] The first detection component 140 is used to photograph and detect the top surface and four sides of the product on the first conveyor line 110. Specifically, the first detection component 140 may include multiple cameras, each of which is respectively arranged around the product's shooting position and on the top of the product on the first conveyor line 110, thereby realizing the photograph and detection of the top surface and four sides of the product. Of course, the first detection component 140 may also include only a single camera, and this single camera, through connection with a moving mechanism and a rotating mechanism, can move, lift, and rotate relative to the product's shooting position on the first conveyor line 110, thereby moving to different positions to achieve photographing and imaging of the top surface and four sides of the same product. In addition to the above two methods, other numbers of cameras can be set, and at least some of the cameras can be movably set, or a turntable or other mechanism can be configured to rotate the product to achieve photographing and imaging of the top surface and four sides of the product.

[0049] After the first detection component 140 performs photo inspection, only the bottom surface of the product remains to be inspected. Therefore, the second conveyor line 120, the flipping mechanism 130, and the second detection component 150 mainly serve to perform photo inspection of the bottom surface of the product.

[0050] like Figure 1 As shown, the second conveyor line 120 is located at the output end of the first conveyor line 110, and the flipping mechanism 130 is located between the first conveyor line 110 and the second conveyor line 120. Please refer to further details. Figure 2 The figure shows the three-dimensional structure of the flipping mechanism 130. As shown in the figure, the flipping mechanism 130 has a horizontal axis ( Figure 1 and Figure 2 (The dotted line in the image indicates a rotating base plate 131. The base plate 131 has negative pressure holes 132. To achieve automated testing, the base plate 131 can be automatically flipped by connecting to a motor shaft. The inside of the negative pressure holes 132 is connected to a negative pressure pipeline, which provides negative pressure adsorption force to the negative pressure holes 132. Furthermore, to further enhance the ability to adsorb and fix the product, the negative pressure holes 132 can be... Figure 2 Multiple intervals are set as shown to adsorb at different positions on the bottom surface of the product, ensuring the reliability of product adsorption and fixation.

[0051] The base plate 131 is used to receive products that have undergone five-sided inspection by the first inspection component 140. Specifically, the base plate 131 can be positioned adjacent to the output end of the first conveyor line 110, and the height of the base plate 131 is slightly lower than the height of the first conveyor line 110, so that the first conveyor line 110 can directly convey the products onto the base plate 131. Of course, in order to ensure the reliability of product transfer, a transfer mechanism in the form of a suction cup or a chuck can also be used to transfer the products from the first conveyor line 110 to the base plate 131.

[0052] The bottom surface of the product reaching the base plate 131 covers the negative pressure hole 132, allowing the negative pressure hole 132 to adsorb and fix the product onto the base plate 131. After the product is adsorbed and fixed onto the base plate 131 through the negative pressure hole 132, the base plate 131 rotates, causing the product on it to flip 180°. The product is then sent above the second conveyor line 120. At this point, the adsorption of the product by the negative pressure hole 132 is released, allowing the product to be smoothly placed on the second conveyor line 120 with its bottom surface facing up.

[0053] Considering the product's height, to ensure that the product can more smoothly achieve a bottom-up position when the base plate 131 is flipped to place it on the second conveyor line 120, such as... Figure 3 As shown in the side structure of the product testing device, the height of the second conveyor line 120 can be set lower than that of the base plate 131.

[0054] It should be noted that, in Figure 1 In the specific embodiment shown, the first conveyor line 110 and the second conveyor line 120 are arranged collinearly, the flipping mechanism 130 is disposed between them, and the rotation axis of the base plate 131 is perpendicular to the conveying directions of the first conveyor line 110 and the second conveyor line 120. In other embodiments, if it is desired to reduce the overall length occupied by the product inspection device 100, the second conveyor line 120 may also be arranged perpendicular to the first conveyor line 110, at an acute angle, or at an obtuse angle, and the rotation axis of the base plate 131 may be parallel to or at an angle to the conveying direction of the first conveyor line 110.

[0055] Finally, since the products arriving at the second conveyor line 120 are in a bottom-up state, the second detection component 150 takes pictures of the bottom of the products from above to complete the detection of all six sides of the products.

[0056] In summary, the product inspection device 100 provided in this application embodiment firstly sets a first inspection component 140 at the first conveyor line 110 to take pictures of the top surface and surrounding surfaces of the batch of products conveyed on the first conveyor line 110. Secondly, a second conveyor line 120 is arranged at the output end of the first conveyor line 110, and a flipping mechanism 130 is arranged between the first conveyor line 110 and the second conveyor line 120. This allows the products to be transferred from the first conveyor line 110 to the second conveyor line 120 while being placed on the second conveyor line 120 with their bottom surface facing up. Then, the second inspection component 150 at the second conveyor line 120 takes pictures from above, thus easily completing the six-sided inspection of the products.

[0057] Meanwhile, to simplify the structure of the flipping mechanism 130 and reduce its manufacturing cost, a rotatable base plate 131 is used to receive the products output from the first conveyor line 110. Furthermore, to ensure the products are reliably fixed to the base plate 131 and facilitate smooth flipping, negative pressure holes 132 are provided on the base plate 131. These holes firmly adhere the products to the base plate 131, preventing them from falling when the base plate 131 flips the products. This simplification of the flipping mechanism 130 results in a simpler overall structure for the product detection device 100, lower installation difficulty, and lower manufacturing costs.

[0058] To facilitate the deployment of the cameras in the first detection component 140, this application further proposes an implementation method, which can be found in the following description. Figure 1 and Figure 3 and combined Figure 4 The product testing device shown in the top view has a first conveyor line 110 for conveying products along a first horizontal direction (the direction shown by the X-axis in the figure). A first testing station 111 and a second testing station 112 are sequentially arranged on the first conveyor line 110 along the first horizontal direction.

[0059] The product testing device 100 also includes an angle adjustment mechanism 160. Figure 4 Angle adjustment mechanism 160 (not shown due to obstruction) is located above the first conveyor line 110 and is rotatable along the vertical axis. Angle adjustment mechanism 160 is used to dock with the top of the product on the first inspection station 111 and rotate the product by 90°. Specifically, angle adjustment mechanism 160 can be a suction cup driven by a motor, which adsorbs the top surface of the product and rotates it 90° along the vertical axis, thus swapping the front and back sides (sides along the X-axis) with the left and right sides (sides along the Y-axis), with the original front and back sides facing left and right respectively. Alternatively, angle adjustment mechanism 160 can also employ rotating hooks, grippers, or other structures; specific details are not limited here.

[0060] After the front and back sides and left and right sides of the product are swapped using the angle adjustment mechanism 160, the deployment of multiple cameras in the first detection component 140 becomes more convenient. Specifically, for example... Figure 1 , Figure 3 and Figure 4 As shown, the first detection component 140 may include a first camera 141, a second camera 142, a third camera 143, a fourth camera 144, and a fifth camera 145.

[0061] The first camera 141 and the second camera 142 are respectively positioned on opposite sides of the first inspection station 111 along the second horizontal direction (as shown by the Y-axis in the figure), and the third camera 143 is positioned above the first inspection station 111. All three cameras (141, 142, and 143) face the first inspection station 111. After the product arrives at the first inspection station 111, the first camera 141 and the second camera 142 are responsible for photographing and inspecting the left and right sides of the product, while the third camera 143 is responsible for photographing and inspecting the top surface of the product.

[0062] The fourth camera 144 and the fifth camera 145 are respectively located on opposite sides of the second inspection station 112 along the Y-axis, and both the fourth camera 144 and the fifth camera 145 face the second inspection station 112. After the product has passed the inspection at the first inspection station 111, its left and right sides and top surface have been inspected. After the inspection is completed, the angle adjustment mechanism 160 mentioned above will rotate the product 90° along the vertical axis. This means that when the product arrives at the second inspection station 112, its original front and back sides are now facing left and right respectively. Therefore, the fourth camera 144 and the fifth camera 145 located on opposite sides of the second inspection station 112 along the Y-axis can take pictures of the original front and back sides of the product, and finally realize the inspection of the five sides of the product except for the bottom surface.

[0063] To avoid the angle adjustment mechanism 160 affecting the photographic detection of the top surface of the product due to being within the field of view of the third camera 143, a translation or lifting mechanism can be set to drive the angle adjustment mechanism 160 to change position so that the angle adjustment mechanism 160 can move out of the field of view of the third camera 143 when the third camera 143 is working.

[0064] Considering that placing cameras on both the front and rear sides to inspect the product's front and rear would obstruct the product's transport path, a mechanism capable of translation or lifting would be needed to address this obstruction. This would allow the cameras to clear space for product transport when not in operation, increasing both the complexity and cost of camera deployment and impacting product transport and inspection efficiency. Therefore, in this embodiment, in addition to deploying the first camera 141, second camera 142, and third camera 143 on the sides and above the first inspection station 111 to inspect the left, right, and top sides, an angle adjustment mechanism 160 is used to rotate the product, allowing the front and rear sides to be switched to the left and right sides. Furthermore, a fourth camera 144 and a fifth camera 145 are placed on both sides of the second inspection station 112 to inspect the front and rear sides of the product. This arrangement ensures that all cameras do not obstruct the product's transport path, improving the efficiency of batch product transport and inspection.

[0065] The design of the second detection component 150 is similar to that of the third camera 143, such as... Figure 1 As shown, a third inspection station 121 is provided on the second conveyor line 120. The second inspection component 150 may include a sixth camera 151, which is positioned above and facing the third inspection station 121. After the flipping mechanism 130 places the product with its bottom surface facing up onto the second conveyor line 120, the second conveyor line 120 transports it to the third inspection station 121 so that the bottom surface of the product can be photographed and imaged by the sixth camera 151.

[0066] To ensure compatibility with quality inspection of different types of products, this application further incorporates an adjustable camera design; please refer to the details below. Figure 1 and combined Figure 5 and Figure 6 , Figure 5 and Figure 6 The camera assembly structure is shown from two perspectives, as shown in the figure. The first detection component 140 may include multiple mounting and adjusting mechanisms 1401 and multiple cameras 1402. It should be noted that the camera 1402 mentioned here can be any one of the first camera 141, second camera 142, third camera 143, fourth camera 144, and fifth camera 145 mentioned above. The multiple mounting and adjusting mechanisms 1401 are arranged at different positions on the first conveyor line 110, and the multiple cameras 1402 are correspondingly arranged on the multiple mounting and adjusting mechanisms 1401. The multiple cameras 1402 are used to take pictures and detect the top surface and the surrounding area of ​​the product on the first conveyor line 110.

[0067] The mounting and adjusting mechanism 1401 includes a fixed base 146, a column 147, and a first slider 148. The fixed base 146 is fixedly disposed relative to the first conveyor line 110. Specifically, the fixed base 146 can be directly fixed to the support structure of the first conveyor line 110, or it can be fixed to the bottom surface, wall surface, or ceiling near the first conveyor line 110. The column 147 is disposed on the fixed base 146 and extends vertically (in the direction shown by the Z-axis in the figure). The first slider 148 is jacked up and down connected to the column 147, and the camera 1402 is fixed to the first slider 148. The first slider 148 is provided with a first locking member 1481. After the first slider 148 is raised and lowered to a predetermined height, the first locking member 1481 is adjusted to form a limiting connection with the column 147 to fix the first slider 148, thereby keeping the camera 1402 on the first slider 148 at the current height.

[0068] Specifically, a guide rail can be provided on the column 147, and the first slider 148 moves up and down by sliding with the guide rail. The first locking member 1481 can be a screw, which is screwed into the first slider 148 and its inner end abuts against the column 147 to lock and fix the first slider 148. When it is necessary to adjust the height of the first slider 148, the screw is loosened to separate it from the column 147. Of course, the first locking member 1481 can also be a pin, which is inserted into the first slider 148 and engages with the column 147 internally to lock the first slider 148. After at least part of the pin is pulled out to separate it from the column 147, the height of the first slider 148 can be adjusted.

[0069] In this embodiment, the first slider 148 is vertically connected to the column 147, and the camera 1402 is fixed to the first slider 148. This allows the height of the camera 1402 to be adjusted by sliding the first slider 148 up and down. After the height of the camera 1402 is adjusted to the correct position, the first locking member 1481 on the first slider 148 is connected to the column 147 to limit the camera 1402 at the current height. This enables the product inspection device 100 to perform quality inspection on products of different heights.

[0070] Please continue reading. Figure 5 and Figure 6 The installation and adjustment mechanism 1401 may further include a second slider 149, which is also vertically connected to the column 147. A second locking member 1491 is provided on the second slider 149. The second locking member 1491 is used to limit the connection between the second slider 149 and the column 147 after the second slider 149 has been raised to a predetermined height, thereby fixing the second slider 149. A light source 1492 is provided on the second slider 149. The arrangement of the second slider 149 and the second locking member 1491 can be the same as the arrangement of the first slider 148 and the first locking member 1481 described above, and will not be elaborated further here.

[0071] Light source 1492 can be Figure 5 and Figure 6 The surface light source shown is located in front of the camera 1402, and a shooting window 1493 is provided in the center of the light source 1492. The camera 1402 takes pictures of the surface of the product illuminated by the light source 1492 through the shooting window 1493. It is understood that in some other embodiments, depending on the product type and detection requirements, the light source 1492 may also be a point light source, a line light source, a ring light source, etc., and the positions of the light source 1492 and the camera 1402 may also be adjusted accordingly.

[0072] By connecting the second slider 149, which is equipped with a light source 1492, to the column 147, the height of the light source 1492 can be adjusted according to the different products being inspected, so as to ensure the imaging quality of the camera 1402 when shooting different types or shapes of products.

[0073] For products of different sizes, in order to adjust the distance between the camera 1402 and the product (equivalent to the object surface) online to ensure image clarity, such as... Figure 5 and Figure 6 As shown, based on the first conveyor line 110 conveying products along the X-axis, the column 147 can be slidably connected to the fixed seat 146 along the Y-axis. The specific sliding assembly method can be the same as the sliding engagement method between the first slider 148 and the column 147 mentioned above. The column 147 is provided with a third locking member 1471. The third locking member 1471 is used to limit the connection with the fixed seat 146 after the column 147 slides to the predetermined position, so as to fix the column 147 in the current position. The third locking member 1471 can be implemented in the same way as the first locking member 1481 mentioned above.

[0074] With the column 147 slidably connected to the fixed base 146 along the Y-axis, the distance between the camera 1402 and the products on the first conveyor line 110 can be adjusted by sliding the column 147, thereby achieving clear imaging when shooting products of different sizes and ensuring accurate and reliable detection results.

[0075] To further improve detection efficiency, such as Figure 1 , Figure 3 and Figure 4 As shown, the first conveyor line 110 may have a first conveyor section 113 and a second conveyor section 114 in sequence along the direction shown by the X-axis. The first inspection station 111 is set on the first conveyor section 113 and the second inspection station 112 is set on the second conveyor section 114.

[0076] The product testing device 100 also includes a translation mechanism 170 and a transfer mechanism 180. The translation mechanism 170 is moved and disposed between the first testing station 111 and the flipping mechanism 130 along the X-axis direction. The angle adjustment mechanism 160 and the transfer mechanism 180 are spaced apart on the translation mechanism 170 along the X-axis direction.

[0077] During the inspection process, the angle adjustment mechanism 160 and the transfer mechanism 180 simultaneously dock with the products on the first inspection station 111 and the second inspection station 112, respectively. That is, while the angle adjustment mechanism 160 docks with the inspected products on the first inspection station 111, the transfer mechanism 180 docks with the inspected products on the second inspection station 112. The transfer mechanism 180 can use the same suction cup, hook, or gripper as the angle adjustment mechanism 160. The difference is that the transfer mechanism 180 does not need to be rotatable. In addition, the transfer mechanism 180 can dock with the top surface of the product or the side surface of the product.

[0078] After the angle adjustment mechanism 160 completes docking with the product at the first inspection station 111, and the transfer mechanism 180 completes docking with the product at the second inspection station 112, the translation mechanism 170 moves towards the flipping mechanism 130 along the X-axis, so that the transfer mechanism 180 transfers the product originally at the second inspection station 112 to the flipping mechanism 130. The angle adjustment mechanism 160 rotates the product originally at the first inspection station 111 by 90° along the vertical axis and transfers it to the second conveying section 114. After the transfer is completed, the transfer mechanism 180 and the angle adjustment mechanism 160 release the product to the corresponding position and reset it to prepare for the next transfer. The product transferred to the second conveying section 114 will be transported by the second conveying section 114 to the second inspection station 112 for front and rear inspection.

[0079] In this embodiment, a translation mechanism 170 is provided between the first inspection station 111 and the flipping mechanism 130, and the angle adjustment mechanism 160 and the transfer mechanism 180 are spaced apart on the translation mechanism 170, so that the angle adjustment mechanism 160 and the transfer mechanism 180 can simultaneously dock with the products on the first inspection station 111 and the products on the second inspection station 112. After docking, the translation mechanism 170 is used to transfer the products docked by the angle adjustment mechanism 160 and the products docked by the transfer mechanism 180 to the rear simultaneously, thereby maximizing the product transfer efficiency.

[0080] Regarding the specific installation arrangement between the translation mechanism 170, the transfer mechanism 180, and the angle adjustment mechanism 160, this application proposes an implementation method, which can be found again in detail. Figure 1 and further combine Figure 7 The assembly structure of the translation mechanism 170, the transfer mechanism 180 and the angle adjustment mechanism 160 shown is such that a fixed bracket 190 can be provided on one side of the second conveying section 114 along the Y-axis. The translation mechanism 170 includes a sliding seat 171 and a lifting bracket 172. The sliding seat 171 is slidably connected to the fixed bracket 190 along the X-axis, and the lifting bracket 172 is vertically connected to the sliding seat 171.

[0081] Specifically, the sliding seat 171 and the fixed bracket 190, as well as the lifting bracket 172 and the sliding seat 171, can be slidably engaged by guide rails. In addition, a motor can be used as the driving component, and a lead screw module, gear rack, belt pulley, etc. can be used as the transmission component to realize the automated drive control of the sliding seat 171 and the lifting bracket 172. Of course, a linear drive mechanism such as a hydraulic cylinder or a pneumatic cylinder can also be used to drive the sliding or lifting of the sliding seat 171 or the lifting bracket 172 by pushing and pulling.

[0082] Angle adjustment mechanism 160 and transfer mechanism 180 are connected at intervals to lifting bracket 172 so that lifting bracket 172 drives angle adjustment mechanism 160 and transfer mechanism 180 to rise and fall synchronously. Specifically, lifting bracket 172 drives angle adjustment mechanism 160 and transfer mechanism 180 to fall synchronously to contact the product and dock with the product. After docking, lifting bracket 172 rises, and angle adjustment mechanism 160 and transfer mechanism 180 pick up the products of the first inspection station 111 and the second inspection station 112 respectively. Then, sliding seat 171 moves towards flipping mechanism 130. After moving into position, lifting bracket 172 falls again, and transfer mechanism 180 smoothly places the product on flipping mechanism 130. At the same time, angle adjustment mechanism 160 smoothly places the product on second conveying section 114. Finally, lifting bracket 172 rises, and sliding seat 171 moves towards first inspection station 111 to reset.

[0083] To improve image quality and thus ensure the accuracy of detection results, such as Figure 1 As shown, a first stop 115 is provided at the junction of the first conveying section 113 and the second conveying section 114, and a second stop 116 is provided at the end of the second conveying section 114. The first stop 115 and the second stop 116 are respectively used to block the products on the first conveying section 113 and the second conveying section 114 so that the products can be stationary at their front ends. Accordingly, the front end of the first stop 115 forms a first inspection station 111, and the front end of the second stop 116 forms a second inspection station 112.

[0084] By setting the first stop 115 and the second stop 116, the products conveyed on the first conveyor line 110 can be stationary at the first inspection station 111 and the second inspection station 112. The first inspection component 140 then photographs and inspects the stationary products to improve image quality and ensure the accuracy of the inspection results. Simultaneously, in conjunction with the lifting and lowering movement of the aforementioned lifting bracket 172, the products can smoothly pass over the first stop 115 and the second stop 116 and be transferred backward. Furthermore, the stationary nature of the products increases the success rate of docking with the angle adjustment mechanism 160 and the transfer mechanism 180 on the lifting bracket 172, ensuring that the product inspection operation proceeds smoothly.

[0085] Please combine again Figure 1 and Figure 4 In some embodiments, a third inspection station 121 is provided on the second conveyor line 120, and the second inspection component 150 is used to photograph and inspect the bottom surface of the product facing upwards on the third inspection station 121. The second conveyor line 120 has an OK output terminal 122 and an NG output terminal 123. The OK output terminal 122 is opposite to the third inspection station 121 along the conveying direction of the second conveyor line 120 (the direction shown by the X-axis in the figure), and the NG output terminal 123 is offset from the third inspection station 121 along the direction shown by the X-axis.

[0086] A rejection mechanism 124 is provided between the second detection component 150 and the OK output terminal 122. The rejection mechanism 124 can be a cylinder, hydraulic cylinder, electric push rod, etc. The rejection mechanism 124 is used to push the unqualified products to the position on the second conveyor line 120 opposite to the NG output terminal 123, and not push qualified products, so that the second conveyor line 120 conveys qualified products to the OK output terminal 122 and unqualified products to the NG output terminal 123, thereby realizing the automated separation of qualified and unqualified products for subsequent differentiated processing.

[0087] To avoid situations where the rejection mechanism 124 fails to push the material properly, thus making it impossible to accurately distinguish between qualified and unqualified products, such as... Figure 1 and Figure 4 As shown in the figure, this application further provides a material distribution partition 125 between the rejection mechanism 124 and the OK output end 122. The difference between the second conveyor line 120 and the OK output end 122 and the NG output end 123 is separated by the material distribution partition 125. This allows products with slight deviations in position due to improper pushing or other factors to be blocked by the material distribution partition 125 and accurately guided to the corresponding output end position during the backward conveying process of the second conveyor line 120. This ensures that the products are accurately conveyed to the OK output end 122 or the NG output end 123, guaranteeing accurate material distribution.

[0088] by Figure 1 The following is a brief description of the testing process of the product testing device 100, using the example provided as an illustration.

[0089] First, batches of products are continuously fed into the first conveyor line 110. After entering the first conveyor line 110, the products are first guided by the guide member 1101, and then conveyed to the first inspection station 111, where they are stopped by the first stop member 115.

[0090] After the product comes to a stop, the first camera 141, the second camera 142 and the third camera 143 simultaneously take pictures of the left and right sides and the top surface of the product on the first inspection station 111.

[0091] After the inspection is completed, the translation mechanism 170 drives the angle adjustment mechanism 160 above it to descend and then ascend. The angle adjustment mechanism 160 contacts the top surface of the product to lift it up. Then, the angle adjustment mechanism 160 rotates along the vertical axis so that the original front and back sides of the product face left and right respectively. At the same time, the translation mechanism 170 moves forward so that the product crosses the first stop 115 and reaches above the second conveying section 114. Then, the translation mechanism 170 drives the angle adjustment mechanism 160 to descend and the angle adjustment mechanism 160 places the product on the second conveying section 114. Next, the translation mechanism 170 drives the angle adjustment mechanism 160 to reset.

[0092] During the process of the translation mechanism 170 and the angle adjustment mechanism 160 transferring the product of the first inspection station 111 to the second conveying section 114, the next product will be conveyed to the first inspection station 111 by the first conveying section 113, and the first camera 141, the second camera 142 and the third camera 143 will perform the same photographic inspection on the next product.

[0093] The product placed on the second conveyor section 114 is conveyed by the second conveyor section 114 to the second inspection station 112, and comes to rest under the obstruction of the second stop 116. The fourth camera 144 and the fifth camera 145 simultaneously take pictures of the front and back sides of the product on the second inspection station 112.

[0094] After the products at the first inspection station 111 and the second inspection station 112 have been inspected, the translation mechanism 170 drives the angle adjustment mechanism 160 and the transfer mechanism 180 to descend and then ascend simultaneously. The angle adjustment mechanism 160 docks with the product at the first inspection station 111 to lift it, and the transfer mechanism 180 docks with the product at the second inspection station 112 to lift it. Then the translation mechanism 170 moves forward, while the angle adjustment mechanism 160 drives the product to rotate. After that, the translation mechanism 170 descends, the transfer mechanism 180 places the product on the flipping mechanism 130, and the angle adjustment mechanism 160 places the product on the second conveying section 114. Then the translation mechanism 170 resets.

[0095] During the resetting of the translation mechanism 170 and the next product transfer operation, the flipping mechanism 130 drives the product to flip 180° and places it on the second conveyor line 120 before resetting, preparing for the arrival of the next product.

[0096] In this cycle, the entire assembly consisting of the angle adjustment mechanism 160, the translation mechanism 170, and the transfer mechanism 180 operates according to a predetermined rhythm. The transfer of the product from the second inspection station 112 to the flipping mechanism 130 and from the first inspection station 111 to the second conveying section 114 are synchronized. The flipping mechanism 130 flips back and forth according to a rhythm staggered from this rhythm. That is, the movement of the flipping mechanism 130 and the movement of the entire assembly consisting of the angle adjustment mechanism 160, the translation mechanism 170, and the transfer mechanism 180 form a predetermined time difference, ensuring that the product can be accurately placed onto the flipping mechanism 130 by the transfer mechanism 180. The flipping mechanism 130 and the entire assembly consisting of the angle adjustment mechanism 160, the translation mechanism 170, and the transfer mechanism 180 operate according to a specific rhythm, making the product transfer efficient and orderly.

[0097] The product flipped by the flipping mechanism 130 and placed on the second conveyor line 120 will be conveyed by the second conveyor line 120 to the third inspection station 121, where the second inspection component 150 will take a picture of the top surface of the product for inspection. After the inspection is completed, the second conveyor line 120 will continue to convey the product. During the conveying process, if the product passes the inspection, it will be directly conveyed to the OK output end 122. If the product fails the inspection, the rejection mechanism 124 will push the product to the position opposite to the NG output end 123, and the product will finally be conveyed to the NG output end.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way.

Claims

1. A product inspection apparatus, characterized by, include: A first conveyor line, a flipping mechanism, a second conveyor line, a first detection assembly, and a second detection assembly; The first conveyor line is used to transport products. The first detection component is located at the first conveyor line and is used to take pictures of the top surface and surrounding area of ​​the products on the first conveyor line. The second conveyor line is located at the output end of the first conveyor line, and the flipping mechanism is located between the first conveyor line and the second conveyor line; The flipping mechanism has a base plate that is rotatably arranged along a horizontal axis. The base plate is provided with negative pressure holes. The base plate is used to receive the product detected by the first detection component and to adsorb and fix the product through the negative pressure holes. The base plate is also used to drive the adsorbed and fixed product on it to flip 180° and place the product on the second conveyor line so that the bottom surface of the product faces upward. The second detection component is located at the second conveyor line and is used to take pictures of the bottom surface of the product from above.

2. The product inspection apparatus of claim 1, wherein The first conveyor line is used to convey the product along a first horizontal direction, and a first inspection station and a second inspection station are sequentially arranged along the first horizontal direction on the first conveyor line; The product testing device also includes an angle adjustment mechanism, which is located above the first conveyor line and can rotate along a vertical axis. The angle adjustment mechanism is used to dock with the top of the product at the first inspection station and drive the product to rotate 90°. The first detection component includes a first camera, a second camera, a third camera, a fourth camera, and a fifth camera; The first camera and the second camera are respectively disposed on opposite sides of the first detection station along the second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction, and the third camera is disposed above the first detection station, with the first camera, the second camera and the third camera all facing the first detection station; The fourth camera and the fifth camera are respectively located on opposite sides of the second detection station along the second horizontal direction, and both the fourth camera and the fifth camera face the second detection station.

3. The product inspection apparatus of claim 2, wherein The first conveyor line has a first conveying section and a second conveying section in sequence along the first horizontal direction, the first inspection station is set on the first conveying section, and the second inspection station is set on the second conveying section; The product testing device further includes a translation mechanism and a transfer mechanism. The translation mechanism is moved along the first horizontal direction and is disposed between the first testing station and the flipping mechanism. The angle adjustment mechanism and the transfer mechanism are disposed at intervals on the translation mechanism along the first horizontal direction. The angle adjustment mechanism and the transfer mechanism are used to synchronously dock with the product on the first inspection station and the product on the second inspection station, respectively. The translation mechanism is used to move along the first horizontal direction toward the flipping mechanism so that the transfer mechanism transfers the product originally located at the second inspection station to the flipping mechanism, and the angle adjustment mechanism transfers the product originally located at the first inspection station to the second conveying section.

4. The product inspection apparatus of claim 3, wherein The second conveying section is provided with a fixed support on one side along the second horizontal direction. The translation mechanism includes a sliding seat and a lifting support. The sliding seat is slidably connected to the fixed support along the first horizontal direction. The lifting support is lifted and lowered connected to the sliding seat. The angle adjustment mechanism and the transfer mechanism are connected to the lifting support at intervals. The lifting support is used to drive the angle adjustment mechanism and the transfer mechanism to lift and lower synchronously, so that the angle adjustment mechanism and the transfer mechanism can be synchronously docked with the product on the first inspection station and the product on the second inspection station, respectively.

5. The product testing device according to claim 4, characterized in that, A first stop is provided at the junction of the first conveying section and the second conveying section, and a second stop is provided at the end of the second conveying section; The first inspection station is formed in the area at the front end of the first stop on the first conveying section, and the second inspection station is formed in the area at the front end of the second stop on the second conveying section.

6. The product inspection apparatus according to any one of claims 1 to 5, characterized by, The first detection component includes multiple installation and adjustment mechanisms and multiple cameras. The multiple installation and adjustment mechanisms are arranged at different positions on the first conveyor line, and the multiple cameras are arranged one-to-one on the multiple installation and adjustment mechanisms. The multiple cameras are used to take pictures and detect the top surface and the surrounding area of ​​the product on the first conveyor line respectively. The installation and adjustment mechanism includes a fixed base, a column, and a first slider. The fixed base is fixedly disposed relative to the first conveyor line. The column is disposed on the fixed base and extends in the vertical direction. The first slider is lifted and connected to the column. The camera is fixed to the first slider. The first slider is provided with a first locking member, which is used to limit the connection with the column after the first slider is raised and lowered to a predetermined height, so as to fix the first slider.

7. The product inspection apparatus of claim 6, wherein The installation and adjustment mechanism also includes a second slider, which is connected to the column for lifting and lowering, and a light source is fixed on the second slider; The second slider is provided with a second locking member, which is used to limit the connection with the column after the second slider is raised and lowered to a predetermined height, so as to fix the second slider.

8. The product inspection apparatus of claim 6, wherein The first conveyor line is used to convey the product along a first horizontal direction, and the column is slidably connected to the fixed base along a second horizontal direction, the second horizontal direction being perpendicular to the first horizontal direction; The column is provided with a third locking member, which is used to limit the connection with the fixed seat after the column slides to a predetermined position, so as to fix the column.

9. The product inspection apparatus of any of claims 1-5, wherein, The second conveyor line is provided with a third inspection station, and the second inspection component is used to take pictures of the bottom surface of the product at the third inspection station. The second conveyor line has an OK output end and an NG output end. The OK output end is opposite to the third detection station along the conveying direction of the second conveyor line, and the NG output end is offset from the third detection station along the conveying direction of the second conveyor line. A rejection mechanism is provided between the second detection component and the OK output terminal. The rejection mechanism is used to push the defective products to a position on the second conveyor line opposite to the NG output terminal, so that the second conveyor line conveys the qualified products to the OK output terminal and the defective products to the NG output terminal.

10. The product inspection apparatus of claim 9, wherein A material separating plate is provided between the waste rejection mechanism and the OK output end, and the area on the second conveyor line opposite to the OK output end and the NG output end is separated by the material separating plate.

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