Fully automatic three-in-one detection device
By designing a fully automated three-in-one testing device, utilizing upper and lower testing cameras and a specific air intake slot structure, the problem of low efficiency in display screen product testing equipment is solved, achieving efficient multi-item testing and stable adsorption, and reducing the testing failure rate and structural cost.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN KADAYANG AUTOMATION CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-06-09
AI Technical Summary
Existing display screen product testing equipment is inefficient and has a high failure rate, especially due to problems caused by unstable transportation.
Design a fully automated three-in-one inspection device, including a feeding platform, a loading robot, a calibration camera, an inspection platform, an upper inspection camera, a lower inspection camera, a unloading robot, a throwing buffer platform, and an unloading platform. The upper and lower inspection cameras simultaneously inspect the upper and lower surfaces of the product, and the specific suction holes and groove structure stably adsorb the product to achieve efficient inspection.
It enables efficient testing of multiple items for display screen products, reduces the failure rate of testing and improves the overall testing efficiency, while reducing the number of suction holes and lowering structural costs.
Smart Images

Figure CN224341455U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing equipment for display screen products, and in particular to a fully automatic three-in-one testing equipment. Background Technology
[0002] Display screen products are manufactured into many semi-finished products, such as COG (Chip on Glass) products, FOG (FPC on Glass) products, and COF (Chip on Film) products. The production process typically involves automated optical inspection (AOI), which is further divided into sub-items such as misalignment detection, conductive particle quantity and size detection, and crack / fragment detection. Current technology uses specific equipment to inspect each sub-item one by one, resulting in low efficiency. Furthermore, existing inspection equipment suffers from inspection failures due to unstable transport and placement, further impacting overall efficiency.
[0003] Therefore, it is necessary to provide a fully automated three-in-one testing device to solve the above-mentioned technical problems. Utility Model Content
[0004] This invention provides a fully automatic three-in-one testing device to solve the problem of low efficiency in existing display screen product testing equipment.
[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a fully automatic three-in-one testing device, which includes: a feeding platform, a feeding robot, a calibration camera, a testing platform, an upper testing camera, a lower testing camera, a discharging robot, a throwing buffer platform, and a discharging platform;
[0006] The detection platform is located between the feeding platform and the discharge buffer platform, the discharge platform is located on the side of the discharge buffer platform away from the feeding platform, the upper detection camera is located above the detection platform, the lower detection camera is located below the detection platform, the calibration camera is located between the feeding platform and the detection platform, the loading robot is movable above the feeding platform and the detection platform, and the unloading robot is movable above the detection platform and the discharge platform.
[0007] The detection platform includes a platform plate and an extension plate connected to one end of the platform plate. The top surfaces of the platform plate and the extension plate are coplanar. A through hole is provided between the platform plate and the extension plate. The shooting path of the lower detection camera passes through the through hole to take pictures of the product. A first suction hole and a first suction groove communicating with the first suction hole are provided on the top surface of the platform plate near the end of the extension plate. A second suction hole and a second suction groove communicating with the second suction hole are provided at the middle position of the top surface of the platform plate. The axial direction of the first suction hole and the second suction hole is perpendicular to the platform plate. The extension direction of the first suction groove and the second suction groove is parallel to the top surface of the platform plate.
[0008] In this utility model, a plurality of first air intake holes are arranged in a straight line on the top surface of the platform plate, and the first air intake groove is T-shaped.
[0009] In this utility model, a plurality of first air intake holes are arranged in a straight line on the top surface of the platform plate, and the first air intake groove is triangular.
[0010] The adjacent first air intake slots are oriented in opposite directions.
[0011] In this invention, the second air intake groove is an annular structure.
[0012] In this invention, the material throwing buffer platform is perpendicular to the conveying direction in the width direction, and the width of the material throwing buffer platform is greater than twice the product width.
[0013] In this invention, the fully automatic three-in-one testing equipment includes two testing platforms, which are arranged side by side along the conveying direction of the feeding platform.
[0014] The fully automatic three-in-one testing equipment includes a crossbeam located above the testing platform. A testing translation drive mechanism and a linear conveying drive mechanism are respectively arranged on two opposite sides of the crossbeam. The upper testing camera is connected to the output end of the testing translation drive mechanism. The loading robot and the unloading robot are both connected to different output ends of the linear conveying drive mechanism.
[0015] The conveying trajectories of the feeding platform and the discharging platform are collinear. The direction in which the upper detection camera is moved by the detection translation drive mechanism is parallel to the conveying trajectory of the feeding platform. The direction in which the loading robot and the unloading robot are moved by the linear conveying drive mechanism is parallel to the conveying trajectory of the feeding platform.
[0016] The fully automatic three-in-one inspection equipment also includes an XZ moving module. The lower inspection camera is connected to the output end of the XZ moving module. The XZ moving module has the ability to move parallel to the conveying trajectory of the feeding platform and to move perpendicular to the feeding platform.
[0017] The output end of the detection translation drive mechanism and the upper detection camera are connected by a connecting component. The connecting component includes a first connecting rod, a second connecting rod, and a fine-tuning slide connected between the first connecting rod and the second connecting rod. The end of the first connecting rod away from the fine-tuning slide is connected to the output end of the detection translation drive mechanism, and the end of the second connecting rod away from the fine-tuning slide is connected to the upper detection camera.
[0018] In addition, the loading robot includes a lifting drive, a lifting frame, a motor, a connecting frame, and suction cup components. The lifting drive is fixedly connected to the output end of the linear conveying drive mechanism. The lifting frame is connected to the output end of the lifting drive. The lifting frame is slidably arranged in a direction perpendicular to the feeding platform. The motor is fixedly mounted on the lifting frame. The rotation axis of the motor's output shaft is perpendicular to the feeding platform. The connecting frame is fixedly connected to the output shaft of the motor. Multiple suction cup components are provided at the bottom of the connecting frame.
[0019] In this invention, X-axis positioning strips and Y-axis positioning strips are slidably arranged on adjacent sides of the end of the feeding platform near the detection platform.
[0020] Compared with the prior art, the advantages of this utility model are as follows: the fully automatic three-in-one inspection equipment of this utility model can simultaneously take pictures and inspect the top and bottom surfaces of the product by setting up an upper inspection camera and a lower inspection camera, and can simultaneously perform three items of inspection: particle detection, fragment crack and misalignment detection, which is more efficient.
[0021] Meanwhile, by setting a first suction hole and a first suction groove communicating with the first suction hole at one end of the top surface of the platform plate near the extension plate, and setting a second suction hole and a second suction groove communicating with the second suction hole at the middle position of the top surface of the platform plate, the axial directions of the first and second suction holes are perpendicular to the platform plate, and the extension directions of the first and second suction grooves are parallel to the top surface of the platform plate. The first and second suction grooves form a large area for adsorption of the product, which can adsorb the product very stably. At the same time, fewer suction holes can be set, resulting in lower structural costs. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments are briefly introduced below. The drawings described below are only the corresponding drawings of some embodiments of this utility model.
[0023] Figure 1 This is a schematic diagram of a preferred embodiment of the fully automatic three-in-one testing equipment of this utility model.
[0024] Figure 2 This is a schematic diagram of the testing platform of the fully automatic three-in-one testing equipment of this utility model.
[0025] Figure 3 This is a schematic diagram of one of the implementation structures of the first air intake groove in this utility model.
[0026] Figure 4 This is a schematic diagram of the second embodiment of the first air intake groove in this utility model.
[0027] Figure 5 This is a schematic diagram of the structure of the second air intake groove in this utility model.
[0028] Figure 6 This is a schematic diagram of the loading robot in this utility model.
[0029] Figure 7 This is a schematic diagram of the upper detection camera in this utility model.
[0030] Figure 8 This is a schematic diagram of the structure of the lower detection camera in this utility model. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0032] The directional terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "inner", "outer", "side", "top" and "bottom", are only for reference to the orientation of the accompanying drawings. The directional terms used are for the purpose of explaining and understanding this utility model, and are not intended to limit this utility model.
[0033] The terms "first" and "second" in this utility model are used for descriptive purposes only and should not be construed as indicating or implying relative importance, nor as a restriction on the order of events.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, a connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Current technologies involve testing each sub-item of a display screen product using specialized equipment, which is inefficient. Furthermore, existing testing equipment is prone to failure due to unstable transport and placement, further impacting overall efficiency.
[0036] The following is a preferred embodiment of a fully automatic three-in-one testing device provided by this utility model that can solve the above technical problems.
[0037] Please refer to Figure 1 and Figure 2 In the diagram, units with similar structures are represented by the same labels.
[0038] This embodiment provides a fully automated three-in-one inspection device capable of inspecting the bonding areas of COG products, FOG products, and COF products. The fully automated three-in-one inspection device of this embodiment includes: an infeed platform 11, a loading robot 12, a calibration camera 13, an inspection platform 14, an upper inspection camera 15, a lower inspection camera 16, an unloading robot 17, a discharge buffer platform 18, and an outfeed platform 19. The upper inspection camera 15 can be used to detect product fragments and cracks, and misalignment of circuit connections, such as misalignment between chip and ITO circuit connections, FPC flexible circuit and ITO circuit connections, and COF flexible circuit and ITO circuit connections. The lower inspection camera 16 can be used to detect particles and connection misalignment of the product; during particle detection, it can also detect foreign objects and ITO corrosion.
[0039] It should be noted that particle detection mainly involves detecting particle bursts, particle quantity, and particle indentation to determine if the pressure is too high, too low, or too low. The particle size distribution and uniformity of conductive particles affect anisotropic conductivity. Generally, conductive particles must have good particle size uniformity and sphericity to ensure consistent contact area between the electrode and the conductive particles, maintaining the same conductivity resistance, and preventing open circuits caused by parts of the electrode not contacting the conductive particles.
[0040] In this embodiment, the detection platform 14 is positioned between the infeed platform 11 and the discharge buffer platform 18, while the discharge platform 19 is positioned on the side of the discharge buffer platform 18 away from the infeed platform 11. An upper detection camera 15 is positioned above the detection platform 14 to photograph and detect the top surface of the product on the detection platform 14, and a lower detection camera 16 is positioned below the detection platform 14 to photograph and detect the bottom surface of the product on the detection platform 14. A calibration camera 13 is positioned between the infeed platform 11 and the detection platform 14. A loading robot 12 is movably positioned above the infeed platform 11 and the detection platform 14. After the loading robot 12 picks up a product from the infeed platform 11, it takes a picture from the calibration camera 13 and adjusts the product's orientation based on the information captured by the calibration camera 13. A unloading robot 17 is movably positioned above the detection platform 14 and the discharge platform 19.
[0041] In this embodiment, the upper detection camera 15 can be an area scan camera, and the lower detection camera 16 can be a line scan camera.
[0042] Please refer to Figure 2 In this embodiment, the detection platform 14 includes a platform plate 141 and an extension plate 142 connected to one end of the platform plate 141. The top surfaces of the platform plate 141 and the extension plate 142 are coplanar. A through hole is provided between the platform plate 141 and the extension plate 142. The shooting path of the lower detection camera 16 passes through the through hole to take pictures of the product.
[0043] A first suction hole 145 and a first suction groove 143 communicating with the first suction hole 145 are provided on the top surface of the platform plate 141 near the end of the extension plate 142. A second suction hole 144 and a second suction groove 146 communicating with the second suction hole 144 are provided at the middle position of the top surface of the platform plate 141. The axial direction of the first suction hole 145 and the second suction hole 144 is perpendicular to the platform plate 141, and the extension direction of the first suction groove 143 and the second suction groove 146 is parallel to the top surface of the platform plate 141. The first suction groove 143 and the second suction groove 146 form a large area of adsorption for the product, which can adsorb the product very stably. The loading robot 12 can stably transport and place the product on the platform plate 141, and the loading robot 12 will not cause the product to move when it moves away from the platform plate 141. The position of the product relative to the platform plate 141 is very stable. In addition, this can connect the suction groove with fewer suction holes, resulting in lower structural cost.
[0044] Please refer to Figure 2 and Figure 3 Optionally, multiple first air intake holes 145 are arranged in a straight line on the top surface of the platform plate 141, and the first air intake groove 143 can be T-shaped.
[0045] Please refer to Figure 4Optionally, multiple first air intake holes 145 are arranged in a straight line on the top surface of the platform plate 141, and the first air intake groove 143 can be triangular.
[0046] Among them, such as Figure 2 The orientation of adjacent first suction slots 143 can be set to be the same. For example... Figure 3 The orientation of adjacent first air intake slots 143 can be set opposite.
[0047] In this embodiment, the second suction groove 146 has a ring-shaped structure. For example... Figure 5 The second air intake groove 146 is a square ring structure. However, it is conceivable that the second air intake groove 146 could also be a circular ring structure or other polygonal ring structures.
[0048] In this embodiment, the throwing buffer platform 18 is perpendicular to the conveying direction in its width direction. The width of the throwing buffer platform 18 is greater than twice the width of the product. Thus, the throwing buffer platform 18 can be divided into two conveying areas, one for conveying defective products and the other for conveying qualified products. This way, when the downstream process equipment of the discharge platform 19 malfunctions and cannot receive products, some qualified products can be output through the throwing buffer platform 18 first. These qualified products can then be manually processed, improving the overall efficiency of the equipment.
[0049] The fully automatic three-in-one testing equipment in this embodiment includes two testing platforms 14, which are arranged side by side along the conveying direction of the feeding platform 11 to improve testing efficiency.
[0050] Please refer to Figure 6 and Figure 7 The fully automatic three-in-one inspection device of this embodiment includes a crossbeam 1A located above the inspection platform 14. A detection translation drive mechanism 151 and a linear conveying drive mechanism 121 are respectively arranged on opposite sides of the crossbeam 1A. The upper inspection camera 15 is connected to the output end of the detection translation drive mechanism 151, and the loading robot 12 and unloading robot 17 are both connected to different output ends of the linear conveying drive mechanism 121.
[0051] The conveying trajectories of the infeed platform 11 and the discharge platform 19 are collinear. The detection translation drive mechanism 151 drives the upper detection camera 15 to move in a direction parallel to the conveying trajectory of the infeed platform 11, enabling the upper detection camera 15 to move above different detection platforms 14 for image detection. The linear conveying drive mechanism 121 drives the loading robot 12 and the unloading robot 17 to move in a direction parallel to the conveying trajectory of the infeed platform 11, enabling the loading robot 12 to pick up products from the infeed platform 11 and transport them to the detection platform 14, and the unloading robot 17 to pick up products from the detection platform 14 and transport them to the throwing buffer platform 18 or the discharge platform 19.
[0052] Please refer to Figure 8 The fully automatic three-in-one inspection device in this embodiment also includes an XZ moving module 161. The lower inspection camera 16 is connected to the output end of the XZ moving module 161. The XZ moving module 161 has the ability to move parallel to the conveying trajectory of the feeding platform 11 and to move perpendicular to the feeding platform 11. This allows the lower inspection camera 16 to move under different inspection platforms 14 for photographic inspection and to adjust the shooting distance between the lower inspection camera 16 and the inspection platform 14.
[0053] Please refer to Figure 7 The output end of the detection translation drive mechanism 151 and the upper detection camera 15 are connected by a connecting assembly. The connecting assembly includes a first connecting rod 152, a second connecting rod 153, and a fine-tuning slide 154 connecting the first connecting rod 152 and the second connecting rod 153. The end of the first connecting rod 152 away from the fine-tuning slide 154 is connected to the output end of the detection translation drive mechanism 151, and the end of the second connecting rod 153 away from the fine-tuning slide 154 is connected to the upper detection camera 15. By rotating the fine-tuning screw of the fine-tuning slide 154, the shooting distance between the upper detection camera 15 and the detection platform 14 can be adjusted.
[0054] Please refer to Figure 6 The loading robot 12 in this embodiment includes a lifting drive 122, a lifting frame 123, a motor 124, a connecting frame 125, and a suction cup component 126.
[0055] The lifting drive component 122 is fixedly connected to the output end of the linear conveyor drive mechanism 121. The lifting frame 123 is connected to the output end of the lifting drive component 122. The lifting frame 123 is slidably arranged in a direction perpendicular to the feeding platform 11. The motor 124 is fixedly mounted on the lifting frame 123. The rotation axis of the output shaft of the motor 124 is perpendicular to the feeding platform 11. The connecting frame 125 is fixedly connected to the output shaft of the motor 124. Multiple suction cup components 126 are provided at the bottom of the connecting frame 125. After the suction cup components 126 pick up the product and it is photographed by the calibration camera 13, the loading robot 12 rotates and adjusts the position of the product according to the photographic information of the calibration camera 13 to achieve the purpose of photographic calibration.
[0056] In this embodiment, X-direction positioning strips 111 and Y-direction positioning strips 112 are slidably arranged on the adjacent sides of the end of the feeding platform 11 near the detection platform 14. By moving the X-direction positioning strips 111 and Y-direction positioning strips 112 and contacting the product, the product is initially positioned at the end of the feeding platform 11.
[0057] The working principle of this utility model is as follows: When inspecting the display screen product, the product moves with the feeding platform 11 until it contacts the X-direction positioning bar 111 and the Y-direction positioning bar 112 to form an initial positioning. Then, the loading robot 12 picks up the initially positioned product and takes a picture above the calibration camera 13. The loading robot 12 rotates and adjusts the orientation of the product according to the picture information taken by the calibration camera 13.
[0058] Then, the loading robot 12 places the product on the platform plate 141. The first suction hole 145, the first suction groove 143, the second suction hole 144, and the second suction groove 146 can stably adsorb the product on the platform plate 141. Then the loading robot 12 cancels the suction force and leaves.
[0059] Then, the upper detection camera 15 and the lower detection camera 16 move to the upper and lower positions of the detection platform 14 to take pictures of the top and bottom surfaces of the product on the detection platform 14. The processor completes the detection and analysis of items such as particles, connection misalignment, fragments and cracks based on the picture information.
[0060] After the photo inspection is completed, the unloading robot 17 grabs the product from the inspection platform 14 and transports it to the throwing buffer platform 18 or the unloading platform 19.
[0061] This completes the testing process of the display screen product by the fully automated three-in-one testing equipment of this preferred embodiment.
[0062] The fully automatic three-in-one inspection equipment of this preferred embodiment can simultaneously photograph and inspect the top and bottom surfaces of the product by setting up an upper inspection camera and a lower inspection camera. It can simultaneously perform inspections of three items: particles, fragments, cracks, and misalignment, making it more efficient.
[0063] Meanwhile, by setting a first suction hole and a first suction groove communicating with the first suction hole at one end of the top surface of the platform plate near the extension plate, and setting a second suction hole and a second suction groove communicating with the second suction hole at the middle position of the top surface of the platform plate, the axial directions of the first and second suction holes are perpendicular to the platform plate, and the extension directions of the first and second suction grooves are parallel to the top surface of the platform plate. The first and second suction grooves form a large area for adsorption of the product, which can adsorb the product very stably. At the same time, fewer suction holes can be set, resulting in lower structural costs.
[0064] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.
Claims
1. A fully automatic three-in-one testing device, characterized in that, include: The system includes a feeding platform, a loading robot, a calibration camera, a detection platform, an upper detection camera, a lower detection camera, a unloading robot, a throwing buffer platform, and an unloading platform. The detection platform is located between the feeding platform and the discharge buffer platform, the discharge platform is located on the side of the discharge buffer platform away from the feeding platform, the upper detection camera is located above the detection platform, the lower detection camera is located below the detection platform, the calibration camera is located between the feeding platform and the detection platform, the loading robot is movable above the feeding platform and the detection platform, and the unloading robot is movable above the detection platform and the discharge platform. The detection platform includes a platform plate and an extension plate connected to one end of the platform plate. The top surfaces of the platform plate and the extension plate are coplanar. A through hole is provided between the platform plate and the extension plate. The shooting path of the lower detection camera passes through the through hole to take pictures of the product. A first suction hole and a first suction groove communicating with the first suction hole are provided on the top surface of the platform plate near the end of the extension plate. A second suction hole and a second suction groove communicating with the second suction hole are provided at the middle position of the top surface of the platform plate. The axial direction of the first suction hole and the second suction hole is perpendicular to the platform plate. The extension direction of the first suction groove and the second suction groove is parallel to the top surface of the platform plate.
2. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The platform plate has multiple first air intake holes arranged in a straight line on its top surface, and the first air intake groove is T-shaped.
3. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The platform plate has multiple first air intake holes arranged in a straight line on its top surface, and the first air intake groove is triangular.
4. The fully automatic three-in-one testing equipment according to claim 2 or 3, characterized in that, The adjacent first air intake slots are oriented in opposite directions.
5. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The second air intake groove has a ring structure.
6. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The material throwing buffer platform is perpendicular to the conveying direction in the width direction, and the width of the material throwing buffer platform is greater than twice the product width.
7. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The fully automatic three-in-one testing equipment includes two testing platforms, which are arranged side by side along the conveying direction of the feeding platform; The fully automatic three-in-one testing equipment includes a crossbeam located above the testing platform. A testing translation drive mechanism and a linear conveying drive mechanism are respectively arranged on two opposite sides of the crossbeam. The upper testing camera is connected to the output end of the testing translation drive mechanism. The loading robot and the unloading robot are both connected to different output ends of the linear conveying drive mechanism. The conveying trajectories of the feeding platform and the discharging platform are collinear. The direction in which the upper detection camera is moved by the detection translation drive mechanism is parallel to the conveying trajectory of the feeding platform. The direction in which the loading robot and the unloading robot are moved by the linear conveying drive mechanism is parallel to the conveying trajectory of the feeding platform. The fully automatic three-in-one inspection equipment also includes an XZ moving module. The lower inspection camera is connected to the output end of the XZ moving module. The XZ moving module has the ability to move parallel to the conveying trajectory of the feeding platform and to move perpendicular to the feeding platform.
8. The fully automatic three-in-one testing equipment according to claim 7, characterized in that, The output end of the detection translation drive mechanism and the upper detection camera are connected by a connecting component. The connecting component includes a first connecting rod, a second connecting rod, and a fine-tuning slide connected between the first connecting rod and the second connecting rod. The end of the first connecting rod away from the fine-tuning slide is connected to the output end of the detection translation drive mechanism, and the end of the second connecting rod away from the fine-tuning slide is connected to the upper detection camera.
9. The fully automatic three-in-one testing equipment according to claim 7, characterized in that, The loading robot includes a lifting drive, a lifting frame, a motor, a connecting frame, and suction cup components. The lifting drive is fixedly connected to the output end of the linear conveying drive mechanism. The lifting frame is connected to the output end of the lifting drive and is slidably arranged in a direction perpendicular to the feeding platform. The motor is fixedly mounted on the lifting frame, and the rotation axis of the motor's output shaft is perpendicular to the feeding platform. The connecting frame is fixedly connected to the output shaft of the motor, and multiple suction cup components are provided at the bottom of the connecting frame.
10. The fully automatic three-in-one testing equipment according to claim 1, characterized in that, The feeding platform has X-axis positioning strips and Y-axis positioning strips slidably arranged on the adjacent sides of one end of the feeding platform near the detection platform.