Cleaning and detecting all-in-one machine for JEDEC tray

Abstract

The application relates to the technical field of carrier cleaning and detection, in particular to a cleaning and detection all-in-one machine for a JEDEC tray, which comprises a rack, a conveying track and a workbench are arranged in the rack, the workbench is located at the head end of the conveying track, a material bin and a feeding mechanism are arranged on the workbench, and the feeding mechanism is located below the material bin; a dust removal device, a camera and a measuring mechanism for detecting the levelness are sequentially arranged on the conveying track along the conveying direction. The application can realize synchronous cleaning and detection of the JEDEC standard tray, efficiently complete the levelness measurement under the condition of ensuring the detection accuracy, and improve the integration and automation level of the tray cleaning and detection.

Description

Technical Field

[0001] This application relates to the field of vehicle cleaning and inspection technology, and in particular to an integrated cleaning and inspection machine for JEDEC pallets. Background Technology

[0002] With the rapid development of the semiconductor packaging and testing industry, JEDEC standard trays, as standardized carriers for carrying, transporting, and storing chips and integrated circuit devices, are widely used in various automated production and testing processes. To ensure the stability and cleanliness of chips during handling, testing, and packaging, the surface flatness and cleanliness of the tray have a direct impact. The presence of dust, particles, or warping on the surface can lead to inaccurate chip positioning, automated placement failures, and even errors in electrical performance testing.

[0003] In existing technologies, the surface of the pallet is typically cleaned by blowing or electrostatic dust removal using independent dust removal equipment, followed by separate inspection stations to test cleanliness and levelness. These devices are often structurally segmented, with the pallet moving between multiple stations, requiring separate data collection and comparison, resulting in low equipment integration. Furthermore, some inspection systems can only test cleanliness on one side of the pallet, or perform levelness measurements directly when the pallet's position is unstable, leading to insufficient accuracy. In addition, traditional manual or semi-automated inspection methods are inefficient in mass production environments, failing to meet the automation and high consistency requirements of modern semiconductor production lines.

[0004] Therefore, how to achieve simultaneous cleaning and inspection of JEDEC standard pallets during automated conveying, and efficiently complete levelness measurement while ensuring inspection accuracy, is a current challenge. Utility Model Content

[0005] To achieve simultaneous cleaning and inspection of JEDEC standard pallets, and to efficiently measure levelness while ensuring inspection accuracy, thereby improving the integration and automation of pallet cleaning and inspection, this application provides an integrated cleaning and inspection machine for JEDEC pallets. This application provides the following technical solution: A cleaning and inspection integrated machine for JEDEC pallets includes a frame, a conveyor rail and a worktable inside the frame, the worktable being located at the beginning of the conveyor rail, a hopper and a feeding mechanism being provided on the worktable, the feeding mechanism being located below the hopper; a dust removal device, a camera and a measuring mechanism for detecting levelness are sequentially arranged along the conveying direction on the conveyor rail.

[0006] In one specific implementation, a gantry frame is provided on both sides of the hopper on the workbench. Each gantry frame is provided with a limiting plate and a first cylinder at its top. The piston rod of the first cylinder is connected to the limiting plate. The limiting plate is located in the hopper and abuts against the bottom surface of the bottommost pallet in the hopper.

[0007] In one specific implementation scheme, the feeding mechanism includes a motor, a lead screw, and a receiving plate. The motor is installed at the bottom of the workbench, the bottom end of the lead screw is connected to the output end of the motor, the top end of the lead screw is connected to the receiving plate, the lead screw is inserted into the workbench, and the receiving plate is located in the conveying track and can move vertically within the conveying track.

[0008] In one specific implementation, the workbench is provided with a track, and the gantry is slidably mounted on the track.

[0009] In one specific implementation, the dust removal device is sleeved on the outside of the conveying track, and the conveying track is installed inside the dust removal device. When the pallet moves along the conveying track and passes through the dust removal device, the dust removal device is used to remove dust from the top and bottom surfaces of the pallet.

[0010] In one specific implementation, a first mounting frame and a second mounting frame are arranged adjacent to each other on the conveying track, the camera is mounted on the first mounting frame, and a supplementary light is rotatably mounted on the second mounting frame.

[0011] In one specific implementation, the measuring mechanism includes a second cylinder and a top plate. The second cylinder is installed at the bottom end of the conveying track, and the piston rod of the second cylinder is connected to the top plate. The top plate is located within the conveying track and can move vertically within the conveying track. Fixing frames are provided at the four corners of the top plate on the conveying track, and a laser displacement device is provided at the top of each fixing frame.

[0012] In summary, the beneficial effects of this application include at least the following: 1) The feeding mechanism, driven by a motor and lead screw for vertical lifting, works in conjunction with the first cylinder and limit plate on the gantry frame to release and precisely position pallets one by one in the hopper. Specifically, the lead screw drive provides smooth and controllable lifting motion, enabling the receiving plate to achieve high-precision vertical displacement, thus ensuring the stability of the pallets during removal and unloading. The limit plate, driven by the first cylinder, provides temporary support and limiting protection during pallet transfer: when the receiving plate rises to the bottom of the hopper, the limit plate extends outward to ensure smooth contact between the bottom pallet and the receiving plate, achieving single-layer separation; subsequently, the receiving plate moves down by the thickness of one pallet, and the limit plate extends back into the hopper to limit and support the upper pallet, preventing it from sliding down and achieving inter-layer isolation. Through this dual control action of first supporting and then limiting, the process of lowering pallets layer by layer in the hopper is ensured to be continuous, controllable, and without jamming.

[0013] 2) By using a second cylinder to drive the top plate upwards, the pallet can be separated from the conveyor track, placing it in an independent measurement space and eliminating interference from track errors. Laser displacement sensors symmetrically arranged at the four corners of the top plate can collect height data from each of the four corners of the pallet. By comparing the relative height differences between the measurement points, the tilt and warpage of the pallet's surface can be accurately calculated. Compared to single-point or dual-point detection, this multi-point measurement method can comprehensively reflect the overall flatness of the pallet, improving the accuracy and stability of levelness measurement.

[0014] By integrating a feeding mechanism, dust removal device, camera, and measuring mechanism sequentially within an integrated frame, a continuous workflow is formed that automatically completes pallet conveying, cleaning, inspection, and sorting. The feeding mechanism ensures precise and stable layer-by-layer release and loading of pallets from the hopper, guaranteeing that the pallets enter the conveyor track in a stable posture. The dust removal device employs a through-type arrangement, with the conveyor track passing through its interior, allowing simultaneous dust removal of both the top and bottom surfaces of the pallets as they pass through, achieving double-sided synchronous cleaning. After the dust removal station, the camera optically scans the pallet surface to automatically detect cleanliness. Finally, at the measuring station, the measuring mechanism detects the pallet's levelness, achieving high-precision levelness measurement independent of conveyor track errors. This system enables double-sided synchronous cleaning and high-precision levelness detection of JEDEC standard pallets during automated conveying, effectively improving the integration, accuracy, and production efficiency of pallet inspection operations.

[0015] 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, the preferred embodiments of this application are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1This is a schematic diagram of the overall structure of the cleaning and testing machine for JEDEC trays in this embodiment.

[0017] Figure 2 This is a schematic diagram of the feeding mechanism in this embodiment.

[0018] Figure 3 This is a schematic diagram of the testing mechanism in this embodiment.

[0019] Figure 4 This is a schematic diagram of the measuring mechanism in this embodiment.

[0020] Reference numerals: 1. Frame; 11. Workbench; 111. Track; 12. Gantry; 121. First cylinder; 122. Limiting plate; 2. Conveying track; 3. Hopper; 4. Feeding mechanism; 41. Motor; 42. Lead screw; 43. Receiving plate; 5. Dust removal device; 6. Testing mechanism; 61. Camera; 62. Fill light; 63. First mounting frame; 64. Second mounting frame; 7. Measuring mechanism; 71. Second cylinder; 72. Top plate; 73. Laser displacement device; 74. Fixing frame. Detailed Implementation

[0021] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0023] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0024] 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.

[0025] This application discloses an integrated cleaning and inspection machine for JEDEC trays.

[0026] Reference Figure 1 and Figure 2 A cleaning and inspection integrated machine for JEDEC pallets includes a frame 1, within which a conveyor rail 2 and a worktable 11 are provided. The worktable 11 is located at the beginning of the conveyor rail 2, and a hopper 3 and a feeding mechanism 4 are provided on the worktable 11, with the feeding mechanism 4 located below the hopper 3. Figure 3 and Figure 4 The conveyor track 2 is provided with a dust removal device 5, a testing mechanism 6, and a measuring mechanism 7 for detecting levelness along the conveying direction. In this application, the conveyor track 2 is a conveyor belt.

[0027] Reference Figure 2On the workbench 11, rails 111 are fixedly installed on both sides of the hopper 3. A gantry frame 12 is slidably mounted on each rail 111. Each gantry frame 12 has a limiting plate 122 and a first cylinder 121 at its top. The piston rod of the first cylinder 121 is connected to the limiting plate 122. The limiting plate 122 is located in the hopper 3 and abuts against the bottom surface of the bottommost pallet in the hopper 3. The feeding mechanism 4 includes a motor 41, a lead screw 42, and a receiving plate 43. The motor 41 is installed at the bottom of the workbench 11. The lead screw 42 is vertically arranged. The bottom end of the lead screw 42 is connected to the output end of the motor 41, and the top end of the lead screw 42 is connected to the receiving plate 43. The lead screw 42 is inserted into the workbench 11. The receiving plate 43 is located in the conveying rail 2 and can move vertically within the conveying rail 2. In implementation, motor 41 is started, and motor 41 drives the receiving plate 43 to rise directly below the hopper 3 via lead screw 42. Then, the first cylinder 121 is started, driving the limiting plate 122 to move outward, so that the last pallet in the hopper 3 contacts the receiving plate 43. Then, motor 41 is controlled to drive the receiving plate 43 to descend by the height of one pallet. The first cylinder 121 is started again, driving the limiting plate 122 to move inward, so that the limiting plate 122 limits the last pallet in the hopper 3 at this time. Finally, motor 41 is controlled to drive the receiving plate 43 to descend until the pallet lands on the conveyor track 2, thus completing the loading operation. This loading mechanism 4, through the vertical lifting drive of motor 41 and lead screw 42 and the coordinated control of the first cylinder 121 and limiting plate 122 on the gantry frame 12, realizes the release and precise positioning of pallets in the hopper 3 one by one. Specifically, the lead screw 42 transmission structure provides smooth and controllable lifting motion, enabling the receiving plate 43 to achieve high-precision vertical displacement, thereby ensuring the stability of the pallet's posture during the removal and unloading process. The limiting plate 122, driven by the first cylinder 121, serves as temporary support and limiting protection during pallet transfer: when the receiving plate 43 rises to the bottom of the hopper 3, the limiting plate 122 extends outward to ensure smooth contact between the bottom pallet and the receiving plate 43, achieving single-layer separation; subsequently, the receiving plate 43 descends by the thickness of one pallet, and the limiting plate 122 extends again into the hopper 3 to limit and support the upper pallet, preventing it from sliding down and achieving inter-layer isolation. Through this dual control action of first supporting and then limiting, the process of pallets being lowered layer by layer in the hopper 3 can be ensured to be continuous, controllable, and without jamming.

[0028] Reference Figure 3 The dust removal device 5 is mounted on the outside of the conveyor track 2, which runs through the interior of the dust removal device 5. When the pallet moves along the conveyor track 2 and passes through the dust removal device 5, the dust removal device 5 is used to remove dust from the top and bottom surfaces of the pallet. It should be noted that the dust removal device 5 is an existing device, therefore its mechanism will not be described in detail.

[0029] Reference Figure 4The conveyor track 2 has a first mounting frame 63 and a second mounting frame 64 arranged adjacent to each other on both its upper and lower sides. Taking the upper side as an example, the testing mechanism 6 includes a camera 61 and a supplementary light 62. The camera 61 is fixedly mounted on the top of the first mounting frame 63, and the supplementary light 62 is rotatably mounted on the second mounting frame 64. After the tray has undergone dust removal, it is scanned under the combined processing of the supplementary light 62 and the camera 61, thereby completing the cleanliness detection operation.

[0030] Reference Figure 4 The measuring mechanism 7 includes a second cylinder 71 and a top plate 72. The second cylinder 71 is installed at the bottom of the conveying track 2, and its piston rod is connected to the top plate 72. The top plate 72 is located within the conveying track 2 and can move vertically within it. Fixtures 74 are installed at the four corners of the top plate 72 on the conveying track 2, and each fixture 74 has a laser displacement device 73 at its top. Since the conveying track 2 itself is not perfectly level, direct levelness measurement on the conveying track 2 is susceptible to track height errors and vibrations. By setting the second cylinder 71 to drive the top plate 72 to rise, the pallet can be separated from the conveying track 2, placing it in an independent measuring space, thereby eliminating interference from track errors. The laser displacement devices 73, symmetrically arranged at the four corners of the top plate 72, can collect height data from the four corners of the pallet. By comparing the relative height differences of each measurement point, the tilt and warpage of the pallet plane can be accurately calculated. Compared to single-point or dual-point detection, this multi-point measurement method can comprehensively reflect the overall planarity of the pallet, improving the accuracy and stability of levelness measurement.

[0031] In summary, by sequentially integrating a feeding mechanism 4, a dust removal device 5, a camera 61, and a measuring mechanism 7 within the integrated frame 1, a continuous workflow capable of automatically completing pallet conveying, cleaning, inspection, and sorting is formed. Specifically, the feeding mechanism 4 achieves precise, layer-by-layer release and stable feeding of pallets in the hopper 3, ensuring that the pallets enter the conveyor track 2 in a stable posture. The dust removal device 5 adopts a through-type arrangement, with the conveyor track 2 passing through its interior, allowing simultaneous dust removal of both the top and bottom surfaces of the pallets as they pass through, achieving double-sided synchronous cleaning. After the dust removal station, the camera 61 optically scans the pallet surface to automatically detect cleanliness. Finally, at the measuring station, the measuring mechanism 7 detects the pallet's levelness, achieving high-precision levelness measurement independent of the error of the conveyor track 2. This achieves double-sided synchronous cleaning and high-precision levelness detection of JEDEC standard pallets during automated conveying, effectively improving the integration, accuracy, and production efficiency of pallet inspection operations.

[0032] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cleaning and inspection integrated machine for JEDEC pallets, characterized in that, The device includes a frame, within which a conveying track and a worktable are provided. The worktable is located at the beginning of the conveying track, and a hopper and a feeding mechanism are provided on the worktable. The feeding mechanism is located below the hopper. Along the conveying direction, a dust removal device, a camera, and a measuring mechanism for detecting levelness are sequentially arranged on the conveying track.

2. The integrated cleaning and inspection machine for JEDEC trays according to claim 1, characterized in that, The workbench is equipped with gantry frames on both sides of the hopper. Each gantry frame is equipped with a limiting plate and a first cylinder at its top. The piston rod of the first cylinder is connected to the limiting plate. The limiting plate is located in the hopper and abuts against the bottom surface of the bottommost tray in the hopper.

3. The integrated cleaning and inspection machine for JEDEC trays according to claim 2, characterized in that, The feeding mechanism includes a motor, a lead screw, and a receiving plate. The motor is installed at the bottom of the workbench. The bottom end of the lead screw is connected to the output end of the motor, and the top end of the lead screw is connected to the receiving plate. The lead screw passes through the workbench, and the receiving plate is located in the conveying track and can move vertically within the conveying track.

4. The integrated cleaning and inspection machine for JEDEC trays according to claim 2, characterized in that, The workbench is equipped with a track, and the gantry frame is slidably mounted on the track.

5. The integrated cleaning and inspection machine for JEDEC trays according to claim 1, characterized in that, The dust removal device is sleeved on the outside of the conveying track, and the conveying track is installed inside the dust removal device. When the pallet moves along the conveying track and passes through the dust removal device, the dust removal device is used to remove dust from the top and bottom surfaces of the pallet.

6. The integrated cleaning and inspection machine for JEDEC trays according to claim 1, characterized in that, A first mounting frame and a second mounting frame are arranged adjacent to each other on the conveying track. The camera is mounted on the first mounting frame, and a supplementary light is rotatably mounted on the second mounting frame.

7. The integrated cleaning and inspection machine for JEDEC trays according to claim 1, characterized in that, The measuring mechanism includes a second cylinder and a top plate. The second cylinder is installed at the bottom end of the conveying track, and the piston rod of the second cylinder is connected to the top plate. The top plate is located inside the conveying track and can move vertically inside the conveying track. Fixed frames are provided at the four corners of the top plate on the conveying track, and a laser displacement device is provided at the top of each fixed frame.

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