Product double-sided image capturing and detecting device

Abstract

The utility model discloses a product double-sided image capturing detection device, and belongs to the technical field of product detection equipment. Comprising a positioning material carrying table arranged on a horizontal workbench, a transparent image taking plate, a pressing plate capable of being vertically pressed on the transparent image taking plate, and a multi-axis transferring mechanism capable of transferring products between the positioning material carrying table and the transparent image taking plate, and a visual detection module corresponding to the transparent image taking plate is arranged below the horizontal workbench. The multi-axis load mechanism comprises a first transfer unit and a second transfer unit, the first transfer unit comprises a first suction cup clamp capable of adsorbing products and driving the products to move horizontally and lift vertically, and the second transfer unit comprises a second suction cup clamp capable of adsorbing the products and driving the products to move horizontally, lift vertically and turn over. According to the product double-face image capturing detection device, the front face and the back face of a product can be located on a fixed horizontal datum plane by flattening the product, and the detection precision of the visual detection module is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of product testing equipment, specifically relating to a product double-sided image acquisition and testing device. Background Technology

[0002] In the manufacturing process of some products, in order to ensure the surface quality of the product, it is often necessary to inspect both the front and back of the product. This involves taking pictures of both the front and back of the product using visual inspection technology, processing and analyzing the key features of the product surface images, and then determining whether the features of the product surface meet the standards.

[0003] However, current product inspection imaging equipment on the market has certain drawbacks. Specifically, products are prone to warping or unevenness on the inspection table due to uneven placement or their own structural characteristics. This can lead to blurred or distorted images acquired by visual inspection technology, thus affecting inspection accuracy. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a product double-sided image inspection device that can flatten the product so that the front and back sides of the product are located on a fixed horizontal reference plane, thereby improving the inspection accuracy of the vision inspection module.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a product double-sided image acquisition and inspection device, including a positioning material carrier stage and a transparent image acquisition plate set on a horizontal worktable, a pressure plate that can be vertically pressed down on the transparent image acquisition plate, and a multi-axis transfer mechanism that can transfer products between the positioning material carrier stage and the transparent image acquisition plate, and a vision inspection module corresponding to the transparent image acquisition plate is set below the horizontal worktable;

[0006] The multi-axis loading mechanism includes a first transfer unit and a second transfer unit. The first transfer unit includes a first suction cup clamp capable of adsorbing the product and driving the product to move horizontally and rise vertically. The second transfer unit includes a second suction cup clamp capable of adsorbing the product and driving the product to move horizontally, rise vertically, and flip.

[0007] Optionally, the positioning loading platform is connected to the horizontal worktable via a positioning mounting plate. The positioning loading platform is slidably connected to the positioning mounting plate via a linear guide rail. A rack is provided on the positioning loading platform along its sliding direction. A servo motor that is driven and connected to the rack is provided on the positioning mounting plate.

[0008] Optionally, the positioning platform is provided with a contoured positioning groove for movably embedding the product, and the positioning platform is provided with a plurality of L-shaped positioning blocks, which surround the contoured positioning groove.

[0009] Optionally, the positioning platform and / or the positioning mounting plate are provided with a positioning switch electrically connected to the servo motor.

[0010] Optionally, a vertical plate is provided on the horizontal worktable, the pressure plate is slidably connected to the vertical plate via a linear guide rail, and a servo slide is provided on the vertical plate to drive the pressure plate to rise and fall vertically relative to the transparent image-taking plate.

[0011] Optionally, the pressure plate is provided with a pressure sensor that is electrically connected to the servo slide.

[0012] Optionally, the first transfer unit includes a first transfer plate slidably connected to the first gantry along a first direction, and a first mounting base for mounting the first suction cup clamp is slidably connected to the first transfer plate along a second direction.

[0013] The first transfer plate and the first gantry are slidably connected by linear guide rails, and the first transfer plate and the first mounting base are slidably connected by linear guide rails. The first gantry is provided with a first drive module that can drive the first transfer plate to reciprocate along a first direction, and the first transfer plate is provided with a second drive module that can drive the first mounting base to reciprocate along a second direction.

[0014] Optionally, the second transfer unit includes a second transfer plate slidably connected to the second gantry along the first direction, a second mounting base slidably connected to the second transfer plate along the second direction, a rotary cylinder being provided on the second mounting base, a second suction cup clamp being connected to the output end of the rotary cylinder, and the rotary cylinder being able to drive the second suction cup clamp to rotate along a rotation axis perpendicular to the first and second directions;

[0015] The second transfer plate and the second gantry are slidably connected by linear guide rails, and the second transfer plate and the second mounting base are slidably connected by linear guide rails. The second gantry is provided with a third drive module that can drive the second transfer plate to reciprocate along the second direction, and the second transfer plate is provided with a fourth drive module that can drive the second mounting base to reciprocate along the second direction.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: Through the cooperation of the first transfer unit and the second transfer unit, the front and back sides of the product that need to be photographed are respectively attached to the transparent image acquisition plate, which effectively improves efficiency. At the same time, the pressure plate can press down on the product placed on the transparent image acquisition plate, so that the front or back side of the product is tightly attached to the transparent image acquisition plate, thereby effectively avoiding the product from having unclear images acquired by the visual inspection module due to various external factors. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the structure of the double-sided image detection device for products in a preferred embodiment of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the pressure plate, the vertical plate, and the servo slide in a preferred embodiment of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the first transfer unit in a preferred embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the second transfer unit in a preferred embodiment of the present invention;

[0022] Figure 5 This is a top view of the structure of the positioning loading platform and the positioning mounting plate when they are combined and installed in a preferred embodiment of this utility model.

[0023] Figure 6 This is a bottom view of the preferred embodiment of the present invention when the positioning loading platform and the positioning mounting plate are assembled.

[0024] The components include: 1. Horizontal worktable; 2. Positioning loading platform; 201. Contour positioning groove; 202. L-shaped positioning block; 3. Transparent image acquisition plate; 4. Pressure plate; 5. First suction cup clamp; 6. Second suction cup clamp; 7. Positioning mounting plate; 8. Rack; 9. Servo motor; 10. Positioning switch; 11. Vertical plate; 12. Servo slide; 13. First gantry frame; 14. First transfer plate; 15. First mounting base; 16. Second gantry frame; 17. Second transfer plate; 18. Second mounting base; 19. Rotary cylinder. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] It should be noted that if directional indicators (such as up, down, bottom, top, etc.) are involved in this embodiment, these directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. Unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances. Example 1

[0027] like Figures 1-6 As shown, a product double-sided image acquisition and inspection device includes a positioning loading platform 2 and a transparent image acquisition plate 3 mounted on a horizontal worktable 1, a pressure plate 4 capable of vertically pressing down on the transparent image acquisition plate 3, and a multi-axis transfer mechanism capable of transferring products between the positioning loading platform 2 and the transparent image acquisition plate 3. A vision inspection module (not shown in the figure) corresponding to the transparent image acquisition plate 3 is provided below the horizontal worktable 1. The multi-axis transfer mechanism includes a first transfer unit and a second transfer unit. The first transfer unit includes a first suction cup clamp 5 capable of adsorbing the product and driving the product to move horizontally and move vertically. The second transfer unit includes a second suction cup clamp 6 capable of adsorbing the product and driving the product to move horizontally, move vertically, and flip.

[0028] Specifically, the product can be placed in a fixed position on the positioning platform 2 by an operator or robot. The first suction cup clamp 5 and the second suction cup clamp 6 each have multiple vacuum nozzles connected to a negative pressure air source. When the first suction cup clamp 5 on the first transfer unit moves horizontally and vertically, the vacuum nozzles on the first suction cup clamp 5 can adsorb the product on the positioning platform 2 when the negative pressure air source is connected. Simultaneously, the first suction cup clamp 5 on the first transfer unit can again move horizontally and vertically to place the adsorbed product flat in a fixed position on the transparent imaging plate 3. At the same time, the first suction cup clamp 5 can move to another position after the negative pressure air source is disconnected, awaiting the next step. Meanwhile, the pressure plate 4 can press vertically down on the product placed on the transparent imaging plate 3, applying pressure to ensure that the image-capturing side of the product is tightly fitted to the transparent imaging plate 3, thus ensuring that the image-capturing side of the product is on the same reference plane. Because the transparent image acquisition plate 3 is made of a transparent material that does not interfere with light propagation or image acquisition, the visual inspection module can photograph the product surface through the transparent image acquisition plate 3 to complete the first image acquisition operation. This process ensures that the product image acquired by the visual inspection module is clearer and more accurate, improving the reliability of the inspection results. Subsequently, the first transfer unit can use a vacuum nozzle connected to a negative pressure air source, in conjunction with the horizontal movement and vertical lifting of the first suction cup clamp 5, to transfer and lift the product that has completed the first image acquisition operation to a certain height after the pressure plate 4 is removed from the transparent image acquisition plate 3. This allows the second suction cup clamp 6 on the second transfer unit to move below the first suction cup clamp 5, and also allows the vacuum nozzle on the second suction cup clamp 6 to flip to face the surface of the product where the first image acquisition operation was completed. Subsequently, the first and second transfer units cooperate to disconnect the negative pressure air source connected to the vacuum nozzle on the first suction cup 5 after the vacuum nozzle on the second suction cup 6 has adhered to the product. Simultaneously, the product can move horizontally, rise and fall vertically, and flip along with the second suction cup 6, so that the side of the product not being imaged rests flat in a fixed position on the transparent image acquisition plate 3. Afterward, the second suction cup 6 can move to another position after the negative pressure air source is disconnected, awaiting the next step. The pressure plate 4 can then press vertically down again onto the surface of the product placed on the transparent image acquisition plate 3, applying pressure to ensure the side of the product not being imaged is tightly adhered to the transparent image acquisition plate 3 for a second image acquisition by the vision inspection module. After the second image acquisition is completed, the pressure plate 4 is raised and reset, and the first transfer unit can transfer the imaged product via the first suction cup 5 to the positioning loading platform 2 for easy handling by operators or robots. By repeating this process, the cooperation between the first and second transfer units enables the visual inspection module to efficiently and clearly capture images of both the front and back of the product.

[0029] It should be noted that the pressure plate 4 mentioned above can be a POM board from the prior art, which has a smooth and seamless surface when bonded to the product, and applies uniform pressure to the product. Meanwhile, the visual inspection module mentioned above is prior art. Furthermore, unlike the above embodiments, in this technical solution, existing scanning imaging technology can also be used to acquire images of the product when it is attached to the transparent imaging plate 3.

[0030] Furthermore, such as Figure 1 , Figure 5 , Figure 6 As shown, the positioning loading platform 2 is connected to the horizontal worktable 1 via a positioning mounting plate 7. The positioning loading platform 2 is slidably connected to the positioning mounting plate 7 via a linear guide rail, and a rack 8 is provided on the positioning loading platform 2 along its sliding direction. A servo motor 9, which is driven and connected to the rack 8, is provided on the positioning mounting plate 7. Specifically, the output end of the servo motor 9 is provided with a gear or gear set that meshes with the rack 8. By rotating the servo motor 9 forward or backward, the positioning loading platform 2 can be driven to move from the working range of the first transfer unit and the second transfer unit to outside the working range, facilitating material handling by operators or robots and improving operational safety.

[0031] The above, such as Figure 5 As shown, the positioning platform 2 is provided with a contoured positioning groove 201 for movably embedding products, and the positioning platform 2 is provided with multiple L-shaped positioning blocks 202. The multiple L-shaped positioning blocks 202 surround the contoured positioning groove 201. The contoured positioning groove 201 and the L-shaped positioning blocks 202 cooperate with each other to position the product on the positioning platform 2, ensuring the uniqueness of the product's position when loading and unloading.

[0032] Furthermore, such as Figure 6 As shown, the positioning loading platform 2 and / or the positioning mounting plate 7 are provided with a positioning switch 10 electrically connected to the servo motor 9. The positioning switch 10 is existing technology and can ensure that the positioning loading platform 2 stops moving when it moves to a predetermined position within the working range of the first transfer unit and the second transfer unit, so that the first suction cup clamp 5 can pick up and put down the product in a fixed position.

[0033] In this embodiment, a vertical plate 11 is provided on the horizontal worktable 1. The pressure plate 4 is slidably connected to the vertical plate 11 via a linear guide rail. A servo slide 12 is provided on the vertical plate 11, capable of driving the pressure plate 4 to vertically rise and fall relative to the transparent image acquisition plate 3. The servo slide 12 is existing technology and can precisely control the distance between the pressure plate 4 and the transparent image acquisition plate 3. Furthermore, to avoid excessive pressure exerted by the pressure plate 4 on the transparent image acquisition plate, a pressure sensor (not shown in the figure) electrically connected to the servo slide 12 is provided on the pressure plate 4. The pressure sensor is existing technology and can monitor the pressure value exerted by the pressure plate 4 on the transparent image acquisition plate 3 (product) in real time. The pressure sensor and the servo slide 12 cooperate to maintain the pressure exerted by the pressure plate 4 on the product within a certain range, thereby improving the image acquisition quality of the visual inspection module. Example 2

[0034] like Figures 1-4 As shown, based on Embodiment 1, the first transfer unit includes a first transfer plate 14 slidably connected to the first gantry 13 along a first direction, and a first mounting base 15 for mounting the first suction cup clamp 5 is slidably connected to the first transfer plate 14 along a second direction. The first transfer plate 14 and the first gantry 13, as well as the first transfer plate 14 and the first mounting base 15, are slidably connected by linear guide rails. The first gantry 13 is provided with a first drive module capable of driving the first transfer plate 14 to reciprocate along the first direction, and the first transfer plate 14 is provided with a second drive module capable of driving the first mounting base 15 to reciprocate along the second direction.

[0035] The second transfer unit includes a second transfer plate 17 slidably connected to the second gantry 16 along a first direction. A second mounting base 18 is slidably connected to the second transfer plate 17 along a second direction. A rotary cylinder 19 is provided on the second mounting base 18. A second suction cup clamp 6 is connected to the output end of the rotary cylinder 19, and the rotary cylinder 19 can drive the second suction cup clamp 6 to rotate along a rotation axis perpendicular to the first and second directions. The second transfer plate 17 and the second gantry 16, as well as the second transfer plate 17 and the second mounting base 18, are slidably connected by linear guide rails. The second gantry 16 is provided with a third drive module that can drive the second transfer plate 17 to reciprocate along the second direction, and the second transfer plate 17 is provided with a fourth drive module that can drive the second mounting base 18 to reciprocate along the second direction.

[0036] It should be noted that the first drive module, second drive module, third drive module and fourth drive module mentioned above are all existing drive devices that can provide linear motion, such as linear motors, servo cylinders, synchronous belt modules, gear and rack transmission mechanisms, pneumatic or hydraulic transmission mechanisms or one or more, to ensure the movement accuracy of the first suction cup clamp 5 and the second suction cup clamp 6. Meanwhile, the first direction mentioned above corresponds to the Y-axis direction (including the positive and negative directions) in the spatial rectangular coordinate system, and the arrangement of the positioning platform 2 and the transparent image acquisition plate 3 corresponds to the first direction. That is, when the first suction cup clamp 5 and the second suction cup clamp 6 reciprocate in the first direction, they can move from above the positioning platform 2 to above the transparent image acquisition plate 3 or from above the transparent image acquisition plate 3 to above the positioning platform 2. The second direction corresponds to the Z-axis direction (including the positive and negative directions) in the spatial rectangular coordinate system. The first direction and the second direction are perpendicular to each other, and the rotation axis of the output end of the rotary cylinder 19 corresponds to the X-axis direction in the spatial rectangular coordinate system. That is, the rotary cylinder 19 can drive the second suction cup clamp 6 to rotate around any straight line parallel to the X-axis direction. Meanwhile, in this technical solution, in order to avoid the air pipes connected to the vacuum nozzles from getting tangled together when the rotary cylinder 19 rotates, a pneumatic rotary joint can be provided on the second mounting base 18. The input end of the pneumatic rotary joint is connected to a negative pressure air source through an air pipe, and the output end of the pneumatic rotary joint is connected to one or more vacuum nozzles through an air pipe. The rotation axis of the pneumatic rotary joint coincides with the rotation axis of the rotary cylinder 19.

[0037] Working Principle: The product can be placed on the positioning platform 2 by an operator or robot, and the product can move with the positioning platform 2 to a position convenient for the first suction cup clamp 5 to pick up and put down. Then, through the first transfer unit, the product can be placed flat on the transparent image plate 3. The product placed on the transparent image plate 3 is pressed down by the pressure plate 4, so that one side of the product can be attached to the transparent image plate 3, so that the vision inspection module can clearly obtain an image of the product surface. Then, through the cooperation of the first transfer unit and the second transfer unit, the product can be adsorbed and transferred on the transparent image plate 3. At the same time, the product can be flipped so that it is placed flat on the transparent image plate 3 again, and the other side of the product can be attached to the transparent image plate 3 by the pressure plate 4, so that the vision inspection module can clearly obtain an image of the other side of the product surface. Finally, the product placed on the transparent image plate 3 can be transferred back to the positioning platform 2 by the first transfer unit, so that the operator or robot can pick it up. This process is repeated, which can efficiently and clearly inspect the product.

[0038] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A product double-side image capturing detection device, characterized in that: The device comprises a positioning loading table (2) and a transparent imaging plate (3) arranged on a horizontal workbench (1), a pressing plate (4) capable of vertically pressing on the transparent imaging plate (3), and a multi-axis loading mechanism capable of loading products between the positioning loading table (2) and the transparent imaging plate (3); a visual detection module corresponding to the transparent imaging plate (3) is arranged below the horizontal workbench (1); The multi-axis loading mechanism comprises a first loading unit and a second loading unit; the first loading unit comprises a first suction clamp (5) capable of adsorbing and driving a product to move horizontally and vertically; and the second loading unit comprises a second suction clamp (6) capable of adsorbing and driving a product to move horizontally, vertically and overturn.

2. The product double-side image capturing detection device according to claim 1, wherein: The positioning loading table (2) is connected to the horizontal workbench (1) through a positioning mounting plate (7); the positioning loading table (2) is slidably connected to the positioning mounting plate (7) through a linear guide rail; and a rack (8) is arranged on the positioning loading table (2) along the sliding direction thereof; and a servo motor (9) is arranged on the positioning mounting plate (7) and is drivingly connected to the rack (8).

3. The product double-side image capturing detection device according to claim 2, wherein: A profiling positioning groove (201) for movably embedding a product is arranged on the positioning loading table (2); and a plurality of L-shaped positioning blocks (202) are arranged on the positioning loading table (2) and surround the profiling positioning groove (201).

4. The product double-side image capturing detection device according to claim 2, wherein: A positioning switch (10) is arranged on the positioning loading table (2) and / or the positioning mounting plate (7) and is electrically connected to the servo motor (9).

5. The product double-side image capturing detection device according to claim 1, wherein: A vertical plate (11) is arranged on the horizontal workbench (1); the pressing plate (4) is slidably connected to the vertical plate (11) through a linear guide rail; and a servo sliding table (12) is arranged on the vertical plate (11) and is capable of driving the pressing plate (4) to vertically move relative to the transparent imaging plate (3).

6. The product double-side image capturing detection device according to claim 5, wherein: A pressure sensor is arranged on the pressing plate (4) and is electrically connected to the servo sliding table (12).

7. The product double-side image capturing detection device according to claim 1, wherein: The first loading unit comprises a first loading plate (14) slidably connected to a first gantry (13) along a first direction; and a first mounting seat (15) for mounting the first suction clamp (5) is slidably connected to the first loading plate (14) along a second direction; The first loading plate (14) and the first gantry (13) and the first loading plate (14) and the first mounting seat (15) are slidably connected through linear guide rails; a first driving module capable of driving the first loading plate (14) to reciprocally move along the first direction is arranged on the first gantry (13); and a second driving module capable of driving the first mounting seat (15) to reciprocally move along the second direction is arranged on the first loading plate (14).

8. The product double-side image capturing detection device according to claim 1, wherein: The second transfer unit comprises a second transfer plate (17) connected to a second gantry (16) in a sliding manner along a first direction, a second mounting seat (18) connected to the second transfer plate (17) in a sliding manner along a second direction, a rotary air cylinder (19) arranged on the second mounting seat (18), and a second suction disc clamp (6) connected to an output end of the rotary air cylinder (19) and capable of being driven by the rotary air cylinder (19) to rotate along an axis of rotation perpendicular to the first direction and the second direction; The second transfer plate (17) and the second gantry (16) are connected in a sliding manner through a linear guide rail, the second transfer plate (17) and the second mounting seat (18) are connected in a sliding manner through a linear guide rail, a third driving module capable of driving the second transfer plate (17) to move back and forth along the second direction is arranged on the second gantry (16), and a fourth driving module capable of driving the second mounting seat (18) to move back and forth along the second direction is arranged on the second transfer plate (17).

Images