Memory strip appearance comprehensive detection device and detection process

Abstract

The application discloses a kind of memory appearance comprehensive detection equipment and detection process, including workbench, workpiece detection mechanism is installed on the workbench, workpiece detection mechanism includes three workpiece clamping assemblies that are arranged side by side along the length direction, three workpiece clamping assemblies form three visual detection stations, visual detection station is symmetrically provided with visual detection piece on both sides, visual detection piece includes X-axis sliding rail installed on workbench, X-axis sliding rail is installed with installation box, 2D camera and 3D camera are installed on installation box, the lens of 2D camera and the lens of 3D camera are arranged towards visual detection station, two groups of installation box can move along the length direction of visual detection station;In the work, by the side-by-side arrangement of the three visual detection stations set along the length direction of X-axis sliding rail, visual detection station is vertically installed memory, the two sides of memory are synchronously visually detected by the two groups of 2D camera and 3D camera on both sides.

Description

Technical Field

[0001] This invention belongs to the field of memory module testing technology, specifically a comprehensive memory module appearance testing device and testing process. Background Technology

[0002] With the rapid iteration of electronic information technology towards high integration, high speed, and miniaturization, memory modules, as core storage components of electronic terminals such as computers, servers, and industrial control equipment, directly determine the operational stability, data transmission efficiency, and lifespan of these devices based on their appearance quality. Appearance defects in memory modules are mainly concentrated in key areas such as the PCB substrate, memory chips, gold fingers, solder joints, and markings. These defects not only affect product appearance consistency but can also lead to poor contact, signal abnormalities, and even equipment malfunctions. Therefore, appearance inspection is an indispensable quality control step in the memory module production process. To overcome the pain points of manual inspection, camera-based visual inspection technology, with its advantages of automation, high precision, and strong repeatability, is gradually being applied to the field of memory module appearance inspection, becoming an important direction for industry technological upgrading. The core principle of camera vision inspection is to capture images of the memory module's appearance using an industrial camera, transmit the image signals to an image processing system, and automatically judge the appearance defects of the memory module through processes such as image preprocessing, feature extraction, and defect identification. Essentially, it uses machine vision to replace the human eye, achieving accurate identification and efficient screening of minute defects. Currently, visual inspection typically involves placing the memory module horizontally, moving the camera above it to take a picture, comparing the images, and then flipping the memory module to perform visual inspection on the other side. However, this method has the following drawbacks: Because visual inspection of memory modules requires visual inspection of both sides, but it is not easy to perform visual inspection of both sides of the memory module simultaneously, the inspection efficiency is low. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a comprehensive inspection device and inspection process for the appearance of memory modules, which effectively solves the problems mentioned in the background art above.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a comprehensive inspection device for the appearance of memory modules, comprising a workbench on which a workpiece inspection mechanism is mounted; The workpiece inspection mechanism includes three workpiece clamping assemblies arranged side by side along the length direction. The three workpiece clamping assemblies form three vision inspection stations, and vision inspection components are symmetrically arranged on both sides of the vision inspection stations. The visual inspection component includes an X-axis slide rail mounted on the worktable, a mounting box mounted on the X-axis slide rail, and a 2D camera and a 3D camera mounted on the mounting box. The lenses of the 2D camera and the 3D camera are set towards the visual inspection station. The two sets of mounting boxes can move along the length of the visual inspection station, so that the two sets of 2D cameras and the two sets of 3D cameras can simultaneously perform visual inspection on both sides of the memory module.

[0005] Preferably, the workpiece clamping assembly includes a U-shaped frame fixedly installed on the worktable, and a flipping component is provided inside the U-shaped frame. The flipping component is used to clamp and flip the memory module, so that the memory module is flipped from a horizontal state to a vertical state, so as to perform surface appearance inspection. The flipping component includes a support platform located inside the U-shaped frame. Two clamping plates are symmetrically arranged on one side of the support platform, and a memory module clamping cavity is formed between the support platform and the two clamping plates. A support detection component is arranged inside the memory module clamping cavity, and a pressure guarantee component is arranged at the top of the clamping plates.

[0006] Preferably, the support platform has symmetrically installed rotating shafts at both ends, which are rotatably connected to the U-shaped frame. A driven gear is coaxially installed at one end of the rotating shaft, and a driving gear is meshed with one side of the driven gear. The driving gear is fixedly connected to the output shaft of the first motor, and the first motor is installed on the U-shaped frame.

[0007] Preferably, a sliding frame is installed on the side of each of the two clamping plates that is far from each other. The two sliding frames are respectively sleeved on the outside of the two rotating shafts. A guide box is fixedly installed on the side of the support platform that is far from the clamping plates. The ends of the two sliding frames are slidably installed inside the guide box. A first double-ended screw is rotatably installed inside the guide box. The two sliding frames are threadedly connected to the first double-ended screw with oppositely oriented threaded grooves. One end of the first double-ended screw is fixedly connected to the output shaft of the second motor. The second motor is fixedly installed on the guide box.

[0008] Preferably, the support detection component includes a support plate disposed between the support platform and two clamping plates, and pressure sensors are arranged in a row along the length direction of the support plate. The memory module is placed on the support plate, and the bending degree of the memory module is detected by the pressure value of the row of pressure sensors.

[0009] Preferably, a sliding base is provided below the support plate. The sliding base is fixedly installed on the inner bottom wall of the U-shaped frame. Two sliding blocks are symmetrically slidably installed inside the sliding base. A connecting rod is hinged to the top of the sliding block. The two connecting rods are arranged in a figure-eight shape. The top of the connecting rod is hinged to the bottom wall of the support plate. A second double-ended screw is rotatably installed inside the sliding base. The two sliding blocks are threadedly connected to two threaded grooves with opposite directions on the second double-ended screw. One end of the second double-ended screw is fixedly connected to the output shaft of the third motor. The third motor is installed on the sliding base.

[0010] Preferably, the pressure guarantee component includes a mounting base fixedly installed on the top of the clamping plate, a rotating rod rotatably mounted on the mounting base, one end of the rotating rod being fixedly connected to the output shaft of the fourth motor, the fourth motor being mounted on the mounting base, and pressure blocks being installed on the sides of the two rotating rods that are far apart from each other.

[0011] Preferably, the top of the workbench is equipped with a qualified product conveyor belt and a non-qualified product conveyor belt. Both the qualified product conveyor belt and the non-qualified product conveyor belt are located on the side of the workpiece inspection mechanism away from the feeding conveyor belt. The qualified product conveyor belt is used to discharge qualified products, and the non-qualified product conveyor belt is used to discharge non-qualified products. A workpiece moving mechanism is provided above the workbench.

[0012] Preferably, the workpiece moving mechanism includes a gantry frame mounted on the workbench, three Y-axis slide rails mounted on the gantry frame, the three Y-axis slide rails being located above three vision inspection stations respectively, a lifting slide block being slidably mounted on the Y-axis slide rails, a lifting cylinder being mounted on the lifting slide block, and a suction cup picker being mounted on the output end of the lifting cylinder.

[0013] Preferably, a testing process method for a comprehensive appearance testing device for memory modules is as follows: S1. Transport and loading: Three loading conveyor belts correspond one-to-one with three vision inspection stations. The memory modules are loaded and transported through the loading conveyor belts, and the memory modules are picked up by the suction cup picker and placed onto the support plate on the vision inspection station. S2. Bending detection and flipping: The bending of the memory module is detected by pressure sensors set in the array, and after clamping, the support platform is rotated to flip the memory module to a vertical position. S3, Visual Inspection: Drive two sets of 2D and 3D cameras to move along the X-axis slide rail and simultaneously perform visual inspection on both sides of the memory module; S4. Unloading: After the inspection is completed, the memory modules are rotated back to the horizontal position. Then, according to the inspection results, the unqualified memory modules are moved to the unqualified product conveyor belt for unloading and unloading through the workpiece moving mechanism, and the qualified memory modules are moved to the qualified product conveyor belt for unloading and unloading through the workpiece moving mechanism.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1) In operation, three visual inspection stations are set up side by side along the X-axis slide rail. The memory modules are installed vertically at each visual inspection station. The memory modules are simultaneously visually inspected on both sides by two sets of 2D and 3D cameras on both sides. The memory modules at the three visual inspection stations are inspected sequentially by moving the station, which further improves the memory module inspection effect. 2) During operation, a support plate is set between the support platform and the two clamping plates. Before clamping, the memory stick is placed on the support plate in a horizontal transport state before clamping. Finally, it is flipped to improve the vertical clamping stability of the memory stick and avoid clamping it directly on the vertical mechanism after the memory stick is picked up in a horizontal state, which would cause clamping tilt and improve the visual inspection effect. 3) During operation, pressure sensors are arrayed along the length of the support plate. The memory module is placed on the support plate, and the bending degree of the memory module is detected by the pressure applied by each pressure sensor. When the pressure of each pressure sensor is different, it indicates that the memory module is bent, which makes it difficult to detect the bending of the memory module by visual inspection. 4) During operation, a pressure guarantee component is set on the top of the clamping plate. By rotating the rotating rod, the pressure block is pressed on the memory module, which facilitates the pressure sensor to generate pressure and detect the curvature. When performing visual inspection, the two pressure blocks are moved to the two rotating rods on opposite sides to avoid visual obstruction to the side of the memory module and facilitate visual inspection. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0016] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a comprehensive appearance inspection device for memory modules according to the present invention; Figure 2 This is a schematic diagram of the workpiece inspection mechanism of the present invention; Figure 3 This is a schematic diagram of the workpiece clamping assembly structure of the present invention; Figure 4 This is a schematic diagram of the supporting detection component structure of the present invention; Figure 5 This is a schematic diagram of the flipping component structure of the present invention; Figure 6 This is a schematic diagram of the clamping plate structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Workbench; 2. Workpiece inspection mechanism; 201. Workpiece clamping assembly; 2011. U-shaped frame; 2012. Tilting component; 20121. Support platform; 20122. Clamping plate; 20123. Rotating shaft; 20124. Driven gear; 20125. Driving gear; 20126. First motor; 20127. Sliding frame; 20128. Guide box; 20129. First double-ended screw; 201210. Second motor; 2013. Support inspection component; 20131. Support plate; 20132. Pressure sensor; 20133. Sliding base; 20134. Sliding block; 201 35. Connecting rod; 20136. Second double-ended screw; 20137. Third motor; 2014. Pressure guarantee component; 20141. Mounting base; 20142. Rotating rod; 20143. Pressure block; 20144. Fourth motor; 202. Vision inspection component; 2021. X-axis slide rail; 2022. Mounting housing; 2023. 2D camera; 2024. 3D camera; 3. Feeding conveyor belt; 4. Qualified product conveyor belt; 5. Unqualified product conveyor belt; 6. Workpiece moving mechanism; 601. Gantry frame; 602. Y-axis slide rail; 603. Lifting slide; 604. Lifting cylinder; 605. Suction cup picker. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example 1, by Figure 1-7 The present invention relates to a comprehensive inspection device for the appearance of memory modules, including a workbench 1, on which a workpiece inspection mechanism 2 is installed.

[0020] The workpiece inspection mechanism 2 includes three workpiece clamping assemblies 201 arranged side by side along the length direction. The three workpiece clamping assemblies 201 form three vision inspection stations. Vision inspection components 202 are symmetrically arranged on both sides of the vision inspection stations. The visual inspection unit 202 includes an X-axis slide rail 2021 mounted on the worktable 1. A mounting housing 2022 is mounted on the X-axis slide rail 2021, and a 2D camera 2023 and a 3D camera 2024 are mounted on the mounting housing 2022. The lenses of the 2D camera 2023 and the 3D camera 2024 are positioned facing the visual inspection station. The two sets of mounting housings 2022 can move along the length of the visual inspection station, allowing the two sets of 2D cameras 2023 and 3D cameras 2024 to simultaneously perform visual inspection on both sides of the memory module. The three visual inspection stations are arranged side-by-side along the length of the X-axis slide rail 2021, with the memory module vertically mounted at each station. Synchronous visual inspection of both sides of the memory module is performed by the two sets of 2D cameras 2023 and 3D cameras 2024 on each side, and the memory modules at the three visual inspection stations are inspected sequentially by moving the cameras, further improving the memory module inspection effect.

[0021] The workpiece clamping assembly 201 includes a U-shaped frame 2011 fixedly installed on the worktable 1. A flipping component 2012 is provided inside the U-shaped frame 2011. The flipping component 2012 is used to clamp and flip the memory module, so that the memory module is flipped from a horizontal state to a vertical state for surface appearance inspection. The flipping component 2012 includes a support platform 20121 located inside the U-shaped frame 2011. Two clamping plates 20122 are symmetrically arranged on one side of the support platform 20121, forming a memory module clamping cavity between the support platform 20121 and the two clamping plates 20122. A support detection component 2013 is arranged inside the memory module clamping cavity. A pressure guarantee component 2014 is arranged at the top of the clamping plates 20122. Rotary shafts 20123 are symmetrically installed at both ends of the support platform 20121. The rotating shafts 20123 are rotatably connected to the U-shaped frame 2011. A driven gear 20124 is coaxially installed at one end of the rotating shaft 20123. A driving gear 20125 is meshed with one side of the driven gear 20124. The driving gear 20125 is fixedly connected to the output shaft of the first motor 20126. Motor 20126 is mounted on U-shaped frame 2011. Sliding brackets 20127 are mounted on the opposite sides of the two clamping plates 20122. The two sliding brackets 20127 are respectively sleeved on the outside of the two rotating shafts 20123. A guide box 20128 is fixedly mounted on the side of the support platform 20121 away from the clamping plate 20122. The ends of the two sliding brackets 20127 are slidably mounted inside the guide box 20128. A first double-ended screw 20129 is rotatably mounted inside the guide box 20128. The two sliding brackets 20127 are threadedly connected to the first double-ended screw 20129 with threaded grooves in opposite directions. One end of the first double-ended screw 20129 is fixedly connected to the output shaft of the second motor 201210. The second motor 201210 is fixedly mounted on the guide box 20128. The support detection component 2013 includes a support plate 20131 disposed between the support platform 20121 and the two clamping plates 20122. The support plate 20131 is positioned between the support platform 20121 and the two clamping plates 20122. Before clamping, the memory module is placed on the support plate 20131 in a horizontal transport position before clamping. Finally, it is flipped over to improve the vertical clamping stability of the memory module and prevent tilting caused by directly clamping the memory module on the vertical mechanism after it has been removed horizontally. To improve visual inspection, pressure sensors 20132 are arranged in a row along the length of the support plate 20131. Memory modules are placed on the support plate 20131, and the bending degree of the memory modules is detected by the pressure values ​​applied to the rows of pressure sensors 20132. A sliding base 20133 is located below the support plate 20131 and is fixedly installed on the inner bottom wall of the U-shaped frame 2011. The sliding base 20133 slides symmetrically inside. Two sliding blocks 20134 are installed, and connecting rods 20135 are hinged to the top of the sliding blocks 20134. The two connecting rods 20135 are arranged in a figure-eight shape, and the top of the connecting rods 20135 is hinged to the bottom wall of the support plate 20131. A second double-ended screw 20136 is rotatably installed inside the sliding base 20133. The two sliding blocks 20134 are respectively threaded to two threaded grooves with opposite directions on the second double-ended screw 20136. One end of the second double-ended screw 20136 is connected to the first The output shaft of the three motors 20137 is fixedly connected. The third motor 20137 is mounted on the sliding base 20133. Pressure sensors 20132 are arrayed along the length direction on the support plate 20131. The memory module is placed on the support plate 20131. The bending degree of the memory module is detected by the pressure of each pressure sensor 20132. When the pressure of each pressure sensor 20132 is different, it indicates that the memory module is bent, which makes up for the deficiency that the bending of the memory module is not easy to detect by appearance inspection. The pressure guarantee component 2014 includes a mounting base 20141 fixedly installed on the top of the clamping plate 20122. A rotating rod 20142 is rotatably mounted on the mounting base 20141. One end of the rotating rod 20142 is fixedly connected to the output shaft of the fourth motor 20144. The fourth motor 20144 is mounted on the mounting base 20141. Pressure blocks 20143 are installed on the sides of the two rotating rods 20142 that are far apart from each other. The pressure guarantee component 2014 is provided on the top of the clamping plate 20122. By rotating the rotating rod 20142, the pressure blocks 20143 are pressed on the memory module, which facilitates the generation of pressure on the pressure sensor 20132 and the detection of bending. During visual inspection, the two pressure blocks 20143 are moved to the side of the two rotating rods 20142 that are far apart from each other, so as to avoid visual obstruction to the side of the memory module and facilitate visual inspection.

[0022] The top of the workbench 1 is equipped with a qualified product conveyor belt 4 and a non-qualified product conveyor belt 5. Both the qualified product conveyor belt 4 and the non-qualified product conveyor belt 5 are located on the side of the workpiece inspection mechanism 2 away from the feeding conveyor belt 3. The qualified product conveyor belt 4 is used to discharge qualified products, and the non-qualified product conveyor belt 5 is used to discharge non-qualified products. A workpiece moving mechanism 6 is set above the workbench 1.

[0023] The workpiece moving mechanism 6 includes a gantry frame 601 mounted on the worktable 1. Three Y-axis slide rails 602 are mounted on the gantry frame 601. The three Y-axis slide rails 602 are located above three vision inspection stations respectively. A lifting slide 603 is slidably mounted on the Y-axis slide rails 602. A lifting cylinder 604 is mounted on the lifting slide 603. A suction cup picker 605 is mounted on the output end of the lifting cylinder 604.

[0024] Working principle: During operation, the memory modules that need to be tested are first placed flat on each feeding conveyor belt 3 and moved toward the workpiece testing mechanism 2. The end of the feeding conveyor belt 3 is equipped with a material blocking plate to prevent the memory modules conveyed on the feeding conveyor belt 3 from falling off at the end. Then, the suction cup picker 605 is moved above the feeding conveyor belt 3, and the output end of the hoisting cylinder 604 is driven to move downward, so that the suction cup picker 605 performs negative pressure adsorption and fixation on the memory stick. Then it moves upward and moves along the Y-axis slide rail 602 to the support plate 20131, and the memory stick is placed directly on the support plate 20131. Then, a clamping operation is performed. The second motor 201210 is turned on, driving the first double-headed screw 20129 to rotate. Since the two sliding brackets 20127 are threadedly connected to the two oppositely opened threaded grooves of the first double-headed screw 20129, the two clamping plates 20122 are driven to move closer to each other, so that the two clamping plates 20122 position the two ends of the memory module. Then, the two fourth motors 20144 are controlled to drive the rotating rod 20142 to rotate, which in turn drives the two pressure blocks 20143 to rotate toward the memory module, so that they press against the two ends of the memory module to generate downward pressure. Pressure sensors 20132 are arrayed along the length direction on the support plate 20131. The bending degree of the memory module is detected by the pressure sensed by the array of multiple pressure sensors 20132. If the pressure sensed by multiple pressure sensors 20132 is the same, it means that the memory module is flat. If the pressure sensed by multiple pressure sensors 20132 is different, it means that the memory module is bent and is a defective product. After the memory module is clamped by the two clamping plates 20122, the third motor 20137 is turned on to drive the second double-ended screw 20136 to rotate. Since the two sliding blocks 20134 are threadedly connected to the two threaded grooves with opposite directions on the second double-ended screw 20136, the two sliding blocks 20134 are driven to move away from each other, thereby driving the support plate 20131 to move downward, so that the memory module is separated from the support plate 20131. Then, the first motor 20126 is turned on, driving the drive gear 20125 to rotate. Since the drive gear 20125 is meshed with the driven gear 20124, it drives the support platform 20121 to rotate, thereby flipping the memory module from a horizontal state to a vertical state. When the memory module is in a vertical state at all three vision inspection stations, the two mounting boxes 2022 are then driven to move along the two X-axis slide rails 2021. When they move to the position corresponding to each vision inspection station, they stop. The two sets of 2D cameras 2023 and 3D cameras 2024 on both sides perform synchronous vision inspection on both sides of the memory module, improving inspection efficiency. After the 2D camera 2023 transmits the captured images to the computer, the captured images are compared with qualified memory module surface images through image analysis and database comparison. The 3D camera 2024 captures images to form three-dimensional images. By comparing the two-dimensional images with the three-dimensional images, a comprehensive inspection of the memory module appearance is achieved. After the inspection is completed, the support platform 20121 is rotated to readjust the memory module to a horizontal position. After determining whether the corresponding memory module is qualified, the memory module is picked up by the suction cup picker 605. Qualified memory modules are placed on the qualified product conveyor belt 4 for unloading, and unqualified memory modules are placed on the unqualified product conveyor belt 5 for unloading, thus distinguishing between qualified and unqualified memory modules.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A comprehensive inspection device for the appearance of memory modules, comprising a workbench (1), characterized in that: The workbench (1) is equipped with a workpiece inspection mechanism (2); The workpiece inspection mechanism (2) includes three workpiece clamping assemblies (201) arranged side by side along the length direction. The three workpiece clamping assemblies (201) form three vision inspection stations. Vision inspection components (202) are symmetrically arranged on both sides of the vision inspection stations. The visual inspection component (202) includes an X-axis slide rail (2021) mounted on a worktable (1), an installation housing (2022) mounted on the X-axis slide rail (2021), a 2D camera (2023) and a 3D camera (2024) mounted on the installation housing (2022), the lenses of the 2D camera (2023) and the 3D camera (2024) facing the visual inspection station, and the two sets of installation housings (2022) can move along the length of the visual inspection station so that the two sets of 2D cameras (2023) and the two sets of 3D cameras (2024) can simultaneously perform appearance inspection on both sides of the memory module.

2. The memory module appearance comprehensive inspection device according to claim 1, characterized in that: The workpiece clamping assembly (201) includes a U-shaped frame (2011) fixedly installed on the worktable (1). A flipping component (2012) is provided inside the U-shaped frame (2011). The flipping component (2012) is used to clamp and flip the memory module so that the memory module is flipped from a horizontal state to a vertical state for surface appearance inspection. The flipping component (2012) includes a support platform (20121) located inside the U-shaped frame (2011). Two clamping plates (20122) are symmetrically arranged on one side of the support platform (20121). A memory module clamping cavity is formed between the support platform (20121) and the two clamping plates (20122). A support detection component (2013) is provided inside the memory module clamping cavity. A pressure guarantee component (2014) is provided at the top of the clamping plate (20122).

3. The memory module appearance comprehensive inspection device according to claim 2, characterized in that: The support platform (20121) has symmetrically installed rotating shafts (20123) at both ends. The rotating shafts (20123) are rotatably connected to the U-shaped frame (2011). A driven gear (20124) is coaxially installed at one end of the rotating shaft (20123). A driving gear (20125) is meshed with one side of the driven gear (20124). The driving gear (20125) is fixedly connected to the output shaft of the first motor (20126). The first motor (20126) is installed on the U-shaped frame (2011).

4. The memory module appearance comprehensive inspection device according to claim 2, characterized in that: Sliding brackets (20127) are installed on the side of the two clamping plates (20122) that are far apart from each other. The two sliding brackets (20127) are respectively sleeved on the outside of the two rotating shafts (20123). A guide box (20128) is fixedly installed on the side of the support platform (20121) that is far away from the clamping plates (20122). The ends of the two sliding brackets (20127) are slidably installed inside the guide box (20128). A first double-ended screw (20129) is rotatably installed inside the guide box (20128). The two sliding brackets (20127) are respectively threaded to the first double-ended screw (20129) with oppositely oriented threaded grooves. One end of the first double-ended screw (20129) is fixedly connected to the output shaft of the second motor (201210). The second motor (201210) is fixedly installed on the guide box (20128).

5. The memory module appearance comprehensive inspection device according to claim 2, characterized in that: The support detection component (2013) includes a support plate (20131) disposed between the support platform (20121) and two clamping plates (20122). Pressure sensors (20132) are arranged in a row along the length of the support plate (20131). The memory module is placed on the support plate (20131), and the bending degree of the memory module is detected by the pressure value of the row of pressure sensors (20132).

6. The memory module appearance comprehensive inspection device according to claim 5, characterized in that: A sliding base (20133) is provided below the support plate (20131). The sliding base (20133) is fixedly installed on the inner bottom wall of the U-shaped frame (2011). Two sliding blocks (20134) are symmetrically slidably installed inside the sliding base (20133). A connecting rod (20135) is hinged to the top of the sliding block (20134). The two connecting rods (20135) are arranged in a figure-eight shape. The top of the connecting rod (20135) is connected to the support plate (20131). The bottom wall of the plate (20131) is hinged, and a second double-ended screw (20136) is rotatably installed inside the sliding base (20133). Two sliding blocks (20134) are respectively threaded to two threaded grooves with opposite directions on the second double-ended screw (20136). One end of the second double-ended screw (20136) is fixedly connected to the output shaft of the third motor (20137), and the third motor (20137) is installed on the sliding base (20133).

7. The memory module appearance comprehensive inspection device according to claim 2, characterized in that: The pressure guarantee component (2014) includes a mounting base (20141) fixedly installed on the top of the clamping plate (20122). A rotating rod (20142) is rotatably installed on the mounting base (20141). One end of the rotating rod (20142) is fixedly connected to the output shaft of the fourth motor (20144). The fourth motor (20144) is installed on the mounting base (20141). Pressure blocks (20143) are installed on the sides of the two rotating rods (20142) that are far apart from each other.

8. The memory module appearance comprehensive inspection device according to claim 8, characterized in that: The top of the workbench (1) is equipped with a qualified product conveyor belt (4) and a non-qualified product conveyor belt (5). Both the qualified product conveyor belt (4) and the non-qualified product conveyor belt (5) are located on the side of the workpiece inspection mechanism (2) away from the feeding conveyor belt (3). The qualified product conveyor belt (4) is used to discharge qualified products, and the non-qualified product conveyor belt (5) is used to discharge non-qualified products. A workpiece moving mechanism (6) is provided above the workbench (1).

9. A comprehensive inspection device for the appearance of memory modules according to claim 1, characterized in that: The workpiece moving mechanism (6) includes a gantry (601) mounted on the workbench (1), three Y-axis slide rails (602) mounted on the gantry (601), the three Y-axis slide rails (602) being located above three vision inspection stations respectively, a lifting slide (603) being slidably mounted on the Y-axis slide rail (602), a lifting cylinder (604) being mounted on the lifting slide (603), and a suction cup picker (605) being mounted on the output end of the lifting cylinder (604).

10. The inspection process method of a comprehensive appearance inspection device for memory modules according to claim 1, characterized in that, The testing process is as follows: S1, Transport and loading: Three loading conveyor belts (3) correspond one-to-one with three vision inspection stations. The memory modules are loaded and transported through the loading conveyor belts (3), and the memory modules are picked up by the suction cup picker (605) and placed on the support plate (20131) on the vision inspection station. S2, Bending detection and flipping: The bending of the memory module is detected by the pressure sensor (20132) set in the array, and after clamping, the support platform (20121) is rotated to flip the memory module to a vertical position; S3, Visual Inspection: Drive two sets of 2D cameras (2023) and 3D cameras (2024) to move along the X-axis slide rail (2021) to simultaneously perform visual inspection on both sides of the memory module; S4. Unloading: After the inspection is completed, the memory module is rotated back to the horizontal state. Then, according to the inspection results, the unqualified memory module is moved to the unqualified product conveyor belt (5) by the workpiece moving mechanism (6) for unloading and unloading. The qualified memory module is moved to the qualified product conveyor belt (4) by the workpiece moving mechanism (6) for unloading and unloading.

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