A notebook cover shell appearance deformation monitoring device and method

Abstract

The present application relates to a kind of notebook cover shell appearance deformation monitoring device and method, belong to visual inspection technical field.A kind of notebook cover shell appearance deformation monitoring device, including the detection table of visual detector being installed, the tooling being installed on the detection table, further include: leveling structure, installation in the tooling;Down structure, installation on the detection table;By the down structure, notebook shell in tooling is moved down, notebook shell is extruded the leveling structure under, the curved surface of notebook shell is extruded into plane;The present application is by down structure and leveling structure cooperation, notebook shell is in the same tooling sequentially in free state and flat state, two indexes respectively evaluate shell deformation quality and stamping precision, comprehensive determination, improve the precision of detection.

Description

Technical Field

[0001] This invention relates to the field of visual inspection technology, and in particular to a device and method for monitoring the appearance deformation of a notebook cover shell. Background Technology

[0002] Laptop cover shells are mostly made of thin metal sheet stamping. After stamping, appearance and size inspection are required to determine whether the laptop cover shell is qualified.

[0003] Existing laptop cover shell deformation monitoring devices typically place the stamped laptop shell into a fixture during inspection. The visual inspection instrument performs a comprehensive visual inspection of the laptop shell by moving relative to the fixture.

[0004] During the stamping of heat dissipation holes in thin metal sheets, plastic deformation and residual stress occur near the heat dissipation holes. The area around the heat dissipation holes is prone to local warping, which manifests as a slight arch. Since the heat dissipation holes are located on the warped surface, their spatial position deviates from the theoretical plane position. If the shell in this state is directly image-measured, the imaging position of the heat dissipation holes will be offset, resulting in errors in the detection results such as hole diameter and hole spacing, which cannot truly reflect the stamping processing error. Summary of the Invention

[0005] Based on this, it is necessary to provide a device for monitoring the deformation of a laptop cover shell, which addresses the aforementioned technical problems. The device includes a testing platform equipped with a visual inspection instrument, and tooling is mounted on the testing platform. The device also includes: A leveling structure is installed within the tooling. A downward pressure structure is installed on the testing platform; The pressing structure causes the laptop casing inside the tooling to move downward, which in turn presses the leveling structure below, compressing the curved surface of the laptop casing into a flat surface.

[0006] Preferably, the leveling structure includes multiple sets of metal wires, which are equally spaced within the fixture and located below the heat dissipation holes of the laptop casing.

[0007] Preferably, multiple sets of arc-shaped plates are symmetrically installed inside the tooling, with the arc-shaped protrusions of the arc-shaped plates facing the notebook housing. A torsion spring is installed on the arc-shaped plate, and a connecting rod is fixedly connected to the rotating end of the torsion spring. A mounting bracket is fixedly connected to the connecting rod, and multiple sets of metal wires are installed on the mounting bracket, with the metal wires higher than the top of the arc-shaped plates.

[0008] Preferably, one end of the arc-shaped plate is fixedly connected to the tooling, and the rotation direction of the torsion spring is towards the fixed end of the arc-shaped plate.

[0009] Preferably, the metal wire is suspended, the arc-shaped plate is inclined, and the end of the arc-shaped plate near the metal wire is a fixed end.

[0010] Preferably, the pressing structure includes multiple sets of telescopic cylinders and a pressure frame. The size of the pressure frame matches the size of the heat dissipation hole and is used to cover the outer ring of the heat dissipation hole. The telescopic cylinder is mounted on the testing platform, and the pressure frame is detachably mounted on the telescopic end of the telescopic cylinder.

[0011] Preferably, the tooling is provided with a slag discharge port at the heat dissipation hole of the laptop shell, and multiple sets of slag guide plates are installed at equal intervals inside the slag discharge port.

[0012] Preferably, the torsion spring will be positioned between the two sets of slag guide plates after it moves down.

[0013] Preferably, the slag guide plate is inclined, and a baffle plate is provided on the slag guide plate, with the baffle plate extending upwards out of the slag discharge port.

[0014] A method for monitoring the appearance deformation of a laptop cover shell, used in a laptop cover shell appearance deformation monitoring device, mainly includes the following operating steps: The stamped notebook casing is placed in the tooling and supported by the leveling structure. The tooling restricts the lateral movement of the casing. The first and second moving components are activated, and the vision inspection instrument performs the first inspection on the heat dissipation hole area of ​​the laptop shell, collects the surface morphology of the heat dissipation hole area in the free state, and obtains the warping curvature as an indicator for judging shell warping deformation and stamping springback. The pressure frame is installed on the telescopic end of the telescopic cylinder. The telescopic cylinder drives the pressure frame to move downward. The pressure frame presses against the housing and drives the housing to move downward. The connecting strip in the heat dissipation hole area squeezes the metal wire. The metal wire gradually tightens from a natural hanging state, flattening the arc surface of the heat dissipation hole area. After pressing down to the preset position and flattening the housing, the visual inspection instrument performs a second inspection on the heat dissipation holes in the flattened state to obtain punching dimensions such as hole diameter and hole spacing. The warpage curvature from the first test and the punching dimensions from the second test are combined to comprehensively evaluate the shell's data.

[0015] This invention utilizes a combination of a pressing structure and a leveling structure to sequentially place the laptop casing in a free state and a flattened state within the same fixture, thereby completing surface and planar inspections. The first inspection captures the surface morphology in the free state, obtaining the warpage curvature of the heat dissipation hole area as an indicator for judging casing warpage deformation, stamping springback, and residual stress levels. The second inspection, conducted in the flattened state, acquires punching dimensions such as hole diameter and hole spacing, eliminating the interference of warpage deformation on dimensional measurements. These two indicators respectively evaluate the casing deformation quality and stamping processing accuracy, providing a comprehensive judgment and improving the accuracy of the inspection.

[0016] The pressure frame area is larger than the heat dissipation hole area and avoids the heat dissipation hole itself. The pressure is applied to the solid part around the hole without blocking or squeezing the hole opening. Multiple sets of equally spaced metal lines provide reverse support to the metal connecting strip below the heat dissipation hole, so that the originally curved connecting strip gradually straightens and flattens the heat dissipation hole area to fit the theoretical plane. This significantly reduces the measurement error of hole diameter and hole spacing, and makes the test results truly reflect the stamping processing error.

[0017] When pressed down, the metal wire moves laterally as the curved plate deforms, and the connecting strip close to the heat dissipation hole moves and pulls the burr, causing the burr to separate from the connecting strip; after the curved plate reaches the deformation limit, the torsion spring continues to rotate, and the metal wire continues to move, expanding the burr removal area and providing more accurate data for dimensional inspection.

[0018] When the metal wire moves in the opposite direction, it comes into contact with the elastic plate and is slightly tightened again, improving the tightness of the fit with the heat dissipation holes and connecting strips; after the plate deforms, it springs back and vibrates, causing the burrs adhering to the slag discharge port and slag guide plate to fall off; after the metal wire separates from the plate, it generates a brief and rapid reciprocating vibration, which not only improves the burr removal ability, but also plays a polishing role, further improving the accuracy of subsequent visual inspection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure in this invention; Figure 2 This is a schematic diagram of the tooling and pressing structure in this invention; Figure 3 For the present invention Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a schematic diagram of the tooling structure in this invention; Figure 5 For the present invention Figure 4 Enlarged schematic diagram of part B; Figure 6 For the present invention Figure 4 An enlarged schematic diagram of section C; Figure 7 This is a cross-sectional view of the tooling in this invention. Figure 1 ; Figure 8 For the present invention Figure 6 An enlarged schematic diagram of section D in the middle; Figure 9 This is a cross-sectional view of the tooling in this invention. Figure 2 ; Figure 10 For the present invention Figure 9 An enlarged schematic diagram of section E in the middle; Figure 11 This is a schematic diagram of the arc-shaped plate after deformation in this invention; Figure 12 For the present invention Figure 11 Enlarged schematic diagram of section F in the middle.

[0020] In the diagram: 1. Vision inspection instrument; 2. Tooling; 201. Slag discharge port; 202. Slag guide plate; 203. Paddle plate; 301. Telescopic cylinder; 302. Pressure frame; 4. Arc plate; 501. Torsion spring; 502. Connecting rod; 503. Mounting bracket; 6. Metal wire. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0022] Example: Refer to Figure 1 A device for monitoring the appearance deformation of a laptop cover shell includes a testing platform. The testing platform is equipped with a first moving component that moves left and right and a second moving component that moves back and forth. Both the first and second moving components are driven by a motor to rotate a lead screw. A moving seat is installed on the lead screw. The rotation of the lead screw drives the moving seat to move. A fixture 2 for placing the laptop shell is installed on the moving seat of the first moving component. A vision inspection instrument 1 is installed on the moving seat of the second moving component. By placing the stamped laptop shell into the fixture 2, the first and second moving components on the testing platform are then activated to perform a comprehensive visual inspection of the laptop shell in the fixture 2. However, during the punching of heat dissipation holes in thin metal sheets, plastic deformation occurs near the heat dissipation holes, generating residual stress. At this time, the heat dissipation hole area is prone to local warping deformation. This warping deformation will cause the heat dissipation hole area to be slightly arched or concave. This elastic warping will interfere with the detection of punching hole dimensions. Since the heat dissipation hole is located on the warped surface, its spatial position deviates from the theoretical plane position. If the shell in this state is directly image measured, the imaging position of the heat dissipation hole will be offset, resulting in errors in the detection results such as the hole diameter and hole spacing. This cannot truly reflect the stamping processing error, which can easily lead to misjudgment and affect subsequent drilling processing and final assembly.

[0023] To address the impact of warping deformation on visual inspection in existing inspection processes, the following implementation methods can be adopted, such as... Figures 2-5As shown, a pressing structure is installed on the testing table, and a leveling structure is installed inside the fixture 2. The pressing structure includes multiple sets of telescopic cylinders 301 and a pressure frame 302. The pressure frame 302 is larger than the heat dissipation hole and avoids the heat dissipation hole itself. The telescopic cylinder 301 is installed on the testing table, and the pressure frame 302 is detachably installed on the telescopic end of the telescopic cylinder 301. The leveling structure includes multiple sets of metal wires 6. The multiple sets of metal wires 6 are equally spaced inside the fixture 2 and are located below the heat dissipation hole of the laptop shell. The laptop casing is placed in fixture 2, which is the same size as the laptop casing. The laptop casing will not move laterally. At this time, the metal wire 6 below acts as a bottom support. The laptop casing heat dissipation hole area is inspected for the first time by visual inspection instrument 1 in conjunction with the first and second moving components. The curved shape of the heat dissipation hole area in the laptop casing in the free state is collected, and the warping curvature of the heat dissipation hole area is obtained as an indicator for judging the warping deformation, stamping springback and residual stress level of the casing.

[0024] After the first inspection, the pressure frame 302 is installed on the telescopic end of the telescopic cylinder 301. The extension of the telescopic end of the telescopic cylinder 301 drives the pressure frame 302 to move downward. The downward movement of the pressure frame 302 causes the laptop casing to move downward. The metal connecting strip near the heat dissipation hole squeezes the multiple sets of metal wires 6 below. The metal wires 6 exert a counter-supporting effect on the metal connecting strip near the heat dissipation hole, causing the connecting strip to gradually become straight from its original curved shape. After reaching the preset movement limit, the telescopic end of the telescopic cylinder 301 stops extending. At this time, the heat dissipation hole area is flattened. Then, the vision inspection instrument 1 performs a second inspection on the heat dissipation hole in the flattened state to obtain punching dimensions such as hole diameter and hole spacing, eliminating measurement errors caused by warping. The inspection results accurately reflect the stamping processing error.

[0025] By combining the pressing and leveling structures, the laptop casing is placed in both a free state and a flattened state within the same fixture 2, allowing for sequential surface and planar inspections. The first inspection captures the surface morphology of the laptop casing in its free state, obtaining the warpage curvature of the heat dissipation hole area, which serves as an indicator for judging the laptop casing's warpage deformation, stamping springback, and residual stress level. The second inspection flattens the laptop casing and then measures the punching dimensions, eliminating the interference of warpage deformation on dimensional measurements. This ensures that the hole diameter and hole spacing accurately reflect stamping processing errors. These two indicators evaluate the laptop casing's deformation quality and stamping processing accuracy, respectively, providing a comprehensive assessment and avoiding omissions and misjudgments that can occur with a single inspection method.

[0026] In a preferred embodiment, such as Figure 5 , Figure 7 , Figure 8 , Figure 9 and Figure 10As shown, multiple sets of arc-shaped plates 4 are symmetrically installed inside the fixture 2. The arc-shaped protrusions of the arc-shaped plates 4 face the laptop casing. Torsion springs 501 are installed on the arc-shaped plates 4. The torque of the torsion springs 501 is greater than the elasticity of the arc-shaped plates 4. A connecting rod 502 is fixedly connected to the rotating end of the torsion springs 501. A mounting bracket 503 is fixedly connected to the connecting rod 502. Multiple sets of metal wires 6 are installed on the mounting bracket 503, and the metal wires 6 are higher than the top of the arc-shaped plates 4. When the laptop casing is moved downward by the pressing structure to squeeze the leveling structure below, the metal wires 6 on the mounting bracket 503 transmit the force to the arc-shaped plates 4. As a result, the curved plate 4 deforms, and the symmetrically arranged multiple sets of curved plates 4 move away from the center. At this time, the metal line 6 moves laterally. Since the heat dissipation holes are prone to leaving burrs after stamping, the burrs face the lower side of the shell, that is, the side facing the metal line 6. The metal line 6 is in close contact with the connecting strip at the heat dissipation hole of the laptop shell. The movement of the metal line 6 can pull the burrs in some areas, causing the burrs to separate from the connecting strip at the heat dissipation hole. At this time, when performing visual inspection, the size data of this area can be detected first to determine the size of the heat dissipation hole and obtain more accurate data.

[0027] After the pressure reaches the deformation limit of the arc plate 4, the torsion spring 501 rotates, which in turn causes the metal wire 6 to continue moving, expanding the burr removal area, increasing the range of accurate data sources, further improving the accuracy of the data, and providing more data support for the size of the heat dissipation holes in the laptop casing.

[0028] In a preferred embodiment, such as Figure 5 As shown, one end of the arc plate 4 is fixedly connected to the fixture 2. By fixing one end of the arc plate 4, the arc plate 4 can only move in one direction after being squeezed, thereby causing the metal wire 6 to move in one direction to remove burrs at the heat dissipation holes and the connection parts, reducing the interference of burrs on visual inspection. When the arc plate 4 is squeezed to the limit, the torsion spring 501 rotates accordingly. Since the rotation direction of the torsion spring 501 is towards the side where the fixed end of the arc plate 4 is located, the metal wire 6 will move in the opposite direction, thereby performing a second removal on the previously removed area, further reducing burrs in the area, and avoiding the situation where some burrs are skewed by the metal wire 6 and do not fall off, providing a less interfered environment for subsequent visual inspection and improving the accuracy of visual inspection.

[0029] In a preferred embodiment, such as Figure 5 , Figure 7 and Figure 8As shown, the arc plate 4 is inclined, and the end of the arc plate 4 near the metal wire 6 is a fixed end. When the metal wire 6 is in a suspended state, it can better fit with the area where the arc-shaped heat dissipation hole appears, which is convenient for cleaning burrs. This avoids the situation where the metal wire 6 is in a taut state and can only remove burrs from the heat dissipation hole and connecting strip in the middle area, thus improving the effect of burr removal. At this time, the metal wire 6 mainly plays the role of cleaning burrs and it is difficult to squeeze the arc-shaped heat dissipation hole into a flat surface.

[0030] The tilting of the arc plate 4 can move the two mounting brackets 503 away from each other, thereby gradually restoring the suspended metal wire 6 to a taut state. This not only improves the burr removal effect but also ensures that the arc surface at the heat dissipation hole is flattened, facilitating subsequent planar visual inspection.

[0031] In a preferred embodiment, such as Figure 6 , Figure 11 and Figure 12 As shown, fixture 2 has a slag discharge port 201 at the heat dissipation holes of the laptop casing. Multiple sets of guide plates 202 are installed at equal intervals inside the slag discharge port 201. The guide plates 202 are a different color from the laptop casing to reduce interference with visual inspection. After the torsion spring 501 moves downwards, it will be positioned between two sets of guide plates 202, preventing damage to the torsion spring 501 and the arc-shaped plate 4 caused by compression. The guide plates 202 are inclined, and a baffle plate 203 is provided on the guide plate 202. The baffle plate 203 extends upwards from the slag discharge port 201. The slag discharge port 201 and the guide plates 202 work together to guide burrs, preventing burrs from accumulating inside fixture 2 and causing reflections that affect subsequent optical inspection. When the torsion spring 501 is compressed, causing the metal wire 6 to move in the opposite direction, the metal wire 6 is in a taut state. The metal wire 6 is in a state of contact with the deflector plate 203. The deflector plate 203 has a certain elasticity and toughness, which can slightly tighten the metal wire 6 a second time, further improving the tightness of the fit between the metal wire 6 and the heat dissipation holes and connecting strips, and improving the burr removal effect. At the same time, when the metal wire 6 moves in the opposite direction, it drives the deflector plate 203 to move. After moving a certain distance, the deflector plate 203 deforms and separates from the metal wire 6. Then, under its own elasticity, it returns to its initial state and generates reciprocating vibration. This reciprocating vibration can cause the burrs adhering to the slag discharge port 201 and the slag guide plate 202 to fall off. At the same time, after the metal wire 6 separates from the deflector plate 203, it will also undergo a brief and rapid reciprocating vibration. This reciprocating vibration can improve the burr removal ability and facilitate subsequent visual inspection.

[0032] A method for monitoring the appearance deformation of a laptop cover shell, used in a laptop cover shell appearance deformation monitoring device, mainly includes the following operating steps: Step 1: Place the stamped laptop casing into fixture 2. The inner contour dimensions of fixture 2 match those of the laptop casing, thus limiting the circumferential movement of the casing and preventing lateral movement or swaying during subsequent inspection and pressing.

[0033] Multiple sets of metal wires 6, located within the fixture 2 and below the heat dissipation hole area, contact the lower surface of the housing, providing bottom support and stabilization for the housing; the multiple sets of metal wires 6 are arranged at equal intervals, and their installation height is higher than the top of the arc plate 4.

[0034] A detection coordinate system is established using the positioning reference plane of tooling 2 to complete the focusing, calibration, and scanning path planning of the vision inspection instrument 1.

[0035] Step 2: Drive the tooling 2 and the vision inspection instrument 1 to move relative to each other left and right and back and forth through the first moving component and the second moving component respectively, so that the field of view of the vision inspection instrument 1 completely covers the heat dissipation hole area.

[0036] Three-dimensional surface topography data of the heat dissipation hole area were collected in the free state of the shell, and the warping curvature of the heat dissipation hole area, as well as the amount and direction of the arched or concave warping, were obtained by fitting.

[0037] The warping curvature was recorded as an indicator of the degree of warping deformation of the notebook casing, the amount of springback during stamping, and the level of residual stress, and was used as the original benchmark for subsequent comparison with the flattened state data.

[0038] Step 3: Detachably install the pressure frame 302 onto the telescopic end of the telescopic cylinder 301; the frame opening of the pressure frame 302 is larger than the heat dissipation hole area and avoids the heat dissipation hole itself, so that it presses against the non-detection area around the heat dissipation hole.

[0039] The telescopic cylinder 301 extends, driving the pressure frame 302 to move down and press against the notebook housing, causing the housing to move down as a whole; the metal connecting strip near the heat dissipation hole squeezes the multiple sets of metal wires 6 below, and the metal wires 6 exert a counter-supporting effect on the connecting strip, so that the connecting strip gradually straightens from its original curved state, and the heat dissipation hole area is gradually flattened.

[0040] During the pressing process, the metal wire 6 transmits the pressure to the arc plate 4 through the mounting bracket 503 and the connecting rod 502. The arc plate 4 deforms under the force and causes the symmetrically arranged mounting brackets 503 to move away from each other, and the metal wire 6 moves laterally accordingly. Because the punching burrs face the lower side of the housing and are in contact with the metal wire 6, the lateral movement of the metal wire 6 exerts a pulling effect on the burrs, causing the burrs to separate from the connecting strip at the heat dissipation hole.

[0041] After the arc plate 4 is deformed to its limit, the torsion spring 501 rotates under the drive of the connecting rod 502, causing the metal wire 6 to continue moving and expanding the burr removal area. Since one end of the arc plate 4 is fixed in the tooling 2 and the end near the metal wire 6 is the fixed end, the metal wire 6 first moves in one direction to clean, and then moves in the opposite direction under the torque of the torsion spring 501 to remove the cleaned area a second time, thus avoiding some burrs being only moved to the side without falling off.

[0042] The curved plate 4 is tilted, and as it continues to deform, the distance between the two mounting brackets 503 increases, and the metal wire 6 gradually returns to a taut state from a hanging state. While improving the burr removal effect, it presses the curved surface of the heat dissipation hole area into a flat plane.

[0043] The burrs that have been removed are guided out and collected through the slag discharge port 201 and the inclined slag guide plate 202, so as to avoid the burrs accumulating in the tooling 2 and causing reflection that would interfere with subsequent optical inspection. The slag guide plate 202 is a different color from the laptop shell, which further reduces the interference with visual inspection. After the torsion spring 501 moves down, it is located between the two adjacent sets of slag guide plates 202, so as to avoid the torsion spring 501 and the arc plate 4 being squeezed and damaged during the pressing process.

[0044] The metal wire 6 moves in the opposite direction until it contacts the lever 203. The lever 203 applies a slight tension to the metal wire 6 a second time, improving the tightness of the fit between the metal wire 6 and the heat dissipation hole and the connecting strip. The metal wire 6 continues to move, causing the lever 203 to deform. After the two separate, the lever 203 resets under its own elasticity and generates reciprocating vibration, causing the burrs attached to the slag discharge port 201 and the slag guide plate 202 to fall off. After the metal wire 6 detaches from the lever 203, it also generates a brief and rapid reciprocating vibration, further improving the burr removal ability.

[0045] Step 4: The telescopic cylinder 301 drives the pressure frame 302 to press down to the preset movement limit and then stops extending, keeping the heat dissipation hole area flat.

[0046] The vision inspection instrument 1 performs a second inspection on the heat dissipation holes in the flattened state, prioritizing the acquisition of image data of the area where the burr cleaning was completed in step three, and obtaining the hole diameter, hole spacing, hole position deviation, roundness and other punching size parameters of the heat dissipation holes.

[0047] By comparing the second test data with the theoretical model, the punching size error after eliminating the interference of warping deformation is obtained. This error truly reflects the stamping process error.

[0048] Step 5: Correlate the warpage curvature obtained in Step 2 with the punching dimensions obtained in Step 4: Use the warpage curvature to evaluate the deformation quality, stamping springback, and residual stress level of the notebook shell, and use the punching dimension error to evaluate the stamping processing accuracy. The two indicators do not interfere with each other and are evaluated separately.

[0049] The judgment results and the data from both tests are stored and uploaded to form a traceable test record, which is used for batch quality statistics and feedforward correction of process parameters to avoid missed judgments and misjudgments caused by a single test method.

[0050] Step 6: The telescopic cylinder 301 retracts, and the pressure frame 302 moves upward and detaches from the notebook casing; the arc plate 4 and the torsion spring 501 reset under their own elasticity and torsion, and the metal wire 6 returns to its suspended state.

Claims

1. A device for monitoring the appearance deformation of a notebook cover shell, comprising a testing platform equipped with a visual inspection instrument (1), wherein a fixture (2) is mounted on the testing platform, characterized in that, Also includes: The leveling structure is installed inside the tooling (2); A downward pressure structure is installed on the testing platform; The pressing structure causes the notebook casing inside the tooling (2) to move downward, causing the notebook casing to press against the leveling structure below, thus pressing the curved surface of the notebook casing into a flat surface.

2. The notebook cover shell appearance deformation monitoring device according to claim 1, characterized in that, The leveling structure includes multiple sets of metal wires (6), which are equally spaced within the fixture (2) and located below the heat dissipation holes of the laptop casing.

3. The device for monitoring the appearance deformation of a notebook cover shell according to claim 2, characterized in that, Multiple sets of arc plates (4) are symmetrically installed inside the tooling (2). The arc protrusions of the arc plates (4) face the notebook casing. A torsion spring (501) is installed on the arc plate (4). A connecting rod (502) is fixedly connected to the rotating end of the torsion spring (501). A mounting bracket (503) is fixedly connected to the connecting rod (502). Multiple sets of metal wires (6) are installed on the mounting bracket (503), and the metal wires (6) are higher than the top of the arc plate (4).

4. The notebook cover shell appearance deformation monitoring device according to claim 3, characterized in that, One end of the arc plate (4) is fixedly connected to the tooling (2), and the rotation direction of the torsion spring (501) is toward the fixed end of the arc plate (4).

5. The notebook cover shell appearance deformation monitoring device according to claim 4, characterized in that, The metal wire (6) is suspended, the arc plate (4) is inclined, and the end of the arc plate (4) near the metal wire (6) is a fixed end.

6. The notebook cover shell appearance deformation monitoring device according to claim 5, characterized in that, The pressing structure includes multiple sets of telescopic cylinders (301) and a pressure frame (302). The size of the pressure frame (302) matches the size of the heat dissipation hole and is used to cover the outer ring of the heat dissipation hole. The telescopic cylinder (301) is installed on the testing platform, and the pressure frame (302) is detachably installed on the telescopic end of the telescopic cylinder (301).

7. The device for monitoring the appearance deformation of a notebook cover shell according to claim 1, characterized in that, The tooling (2) has a slag discharge port (201) at the heat dissipation hole of the laptop shell, and multiple sets of slag guide plates (202) are installed at equal intervals in the slag discharge port (201).

8. The notebook cover shell appearance deformation monitoring device according to claim 6, characterized in that, After the torsion spring (501) moves down, it will be located between the two sets of guide plates (202).

9. A device for monitoring the appearance deformation of a notebook computer cover shell according to claim 8, characterized in that, The slag guide plate (202) is inclined, and a baffle plate (203) is provided on the slag guide plate (202), which extends upward out of the slag discharge port (201).

10. A method for monitoring the appearance deformation of a laptop cover shell, used in the laptop cover shell appearance deformation monitoring device as described in claim 6, characterized in that, The main operating steps include the following: The stamped notebook casing is placed in the tooling (2) and supported by the leveling structure. The tooling (2) restricts the lateral movement of the casing. The visual inspection instrument (1) performs the first inspection on the heat dissipation hole area of ​​the laptop shell, collects the surface morphology of the heat dissipation hole area in a free state, and obtains the warping curvature; The pressure frame (302) is installed on the telescopic end of the telescopic cylinder (301). The telescopic cylinder (301) drives the pressure frame (302) to move downward. The pressure frame (302) presses against the notebook housing and drives the notebook housing to move downward. The connecting strip in the heat dissipation hole area of ​​the notebook housing squeezes the metal wire (6). The metal wire (6) flattens the arc surface of the heat dissipation hole area. The pressure frame (302) is pressed down to a preset position, and the vision inspection instrument (1) performs a second inspection on the heat dissipation holes in the flattened state to obtain the punching dimensions such as hole diameter and hole spacing; The data information of the notebook casing is comprehensively evaluated by combining the warpage curvature from the first test and the punching size from the second test.

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