A server chassis flatness laser detection device

Abstract

The application relates to the technical field of flatness laser detection, and discloses a server case flatness laser detection device, which comprises an outer box and a laser detection head arranged in the outer box, entrances and exits are respectively arranged on the two sides of the outer box, a first conveying belt and a second conveying belt are respectively arranged through the entrances and the exits on the outer box, a flat conveying assembly is arranged in the outer box, the flat conveying assembly comprises a base fixed to the bottom of the outer box, a first magnetic separation plate fixed to the top of the base, a guide groove extending along the length direction of the outer box is arranged on the first magnetic separation plate, and a sliding block is arranged on the top of the first magnetic separation plate. The application has the advantages of improving the flatness of the server case during conveying, and solves the problems that the existing server case flatness detection device cannot guarantee the flatness of the server case during conveying and the influence of the abrasion of the conveying component on the movement stability of the server case is reduced.

Description

Technical Field

[0001] This invention relates to the field of flatness laser inspection technology, specifically to a server chassis flatness laser inspection device. Background Technology

[0002] With the development of digitalization and informatization, the flatness of server chassis needs to be strictly controlled within the tolerance range. Therefore, flatness inspection is required. The inspection process not only pursues high precision and faster speed, but also improves inspection efficiency and realizes the automation of loading and unloading processes to meet the needs of large-scale inspection.

[0003] A search revealed a Chinese utility model patent with publication number CN220455388U, which discloses an industrial automation intelligent inspection platform. The platform includes an inspection conveyor belt on a conveyor table, a feeding conveyor belt on one side of the conveyor table, and a discharging conveyor belt on the other side. Automatic loading and unloading are achieved through a "small drop structure conveyor belt". After reaching the middle, the conveyor belt is fixed by a reversing clamping mechanism and is used in conjunction with multiple inspection heads for inspection.

[0004] The aforementioned device relies on a conveyor belt to complete the loading and unloading process. The chassis is inspected by a detection head on the middle conveyor belt. However, laser flatness inspection has high requirements for the flatness of the chassis. Slight unevenness in the conveyor belt itself can affect the flatness of the chassis placement, thereby reducing the accuracy of laser flatness inspection. In addition, wear and tear on the conveyor components during long-term use can also affect the stability of the chassis movement. Summary of the Invention

[0005] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a server chassis flatness laser inspection device, which has the advantage of improving the flatness of the chassis during transportation. It solves the problem that existing chassis flatness inspection devices cannot guarantee the flatness of the chassis during transportation, while reducing the impact of wear on the transportation components on the stability of chassis movement.

[0006] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A server chassis flatness laser inspection device includes an outer casing and a laser inspection head disposed within the outer casing. The outer casing has an inlet and an outlet on its two sides. A first conveyor belt and a second conveyor belt, respectively penetrating the inlet and outlet, are mounted on the outer casing. A planar conveying assembly is disposed within the outer casing. The planar conveying assembly includes: The base is fixed to the bottom of the outer casing; The first magnetic shielding plate is fixed to the top of the base, and a guide groove extending along the length of the outer box is provided on the first magnetic shielding plate. A slider is slidably disposed on the top of the first magnetic shielding plate to support the chassis to be tested; The first electromagnet is located at the bottom of the slider and extends into the guide groove; A magnetic drive assembly is disposed on the outer periphery of the first magnetic shielding plate and arranged coaxially with the first magnetic shielding plate. When the magnetic drive assembly rotates circumferentially along the first magnetic shielding plate, the distance between the magnetic drive assembly and the first electromagnet passing through the guide groove changes with the position of the first electromagnet in the guide groove, so that the magnetic attraction between the magnetic drive assembly and the first electromagnet changes with the distance. When the magnetic drive assembly rotates to be opposite to the axis of the first magnetic shielding plate, the distance between it and the first electromagnet is the largest.

[0007] Furthermore, the magnetic drive assembly includes: The second electromagnet is a C-shaped electromagnet, with its C-shaped opening being fitted onto the outer periphery of the first magnetic shielding plate and slidingly engaging with the outer periphery. A circular ring is fixed to the bottom of the second electromagnet, and the circular ring is coaxially arranged with the first magnetic shielding plate. The driving component, fixed to the base, is used to drive the ring to rotate.

[0008] Furthermore, a second magnetic shielding plate is fixedly connected to the top of the slider, and an anti-slip plate is fixedly connected to the top of the second magnetic shielding plate. A push switch is embedded in the top of the anti-slip plate, and the push switch is electrically connected to both the first electromagnet and the second electromagnet.

[0009] Furthermore, the bottom of the slider is provided with a storage groove, and a cylinder is provided in the storage groove. The cylinder can slide along the height direction of the storage groove, and the first electromagnet is fixed to the bottom of the cylinder.

[0010] Furthermore, an arc-shaped guide plate is fixedly connected to the bottom of the first magnetic shielding plate. The arc-shaped guide plate is located at one end of the first magnetic shielding plate near the outlet. A rack is fixedly connected to the top of the arc-shaped guide plate. A rack segment is provided on the outer side of the cylinder. The rack meshes with the rack segment.

[0011] Furthermore, a base plate is fixedly connected to the lower part of the first magnetic shielding plate near the outlet end, and a limiting component for limiting the slider is provided on the top of the base plate.

[0012] Furthermore, the limiting component includes: The two bent plates are slidably connected to the top of the base plate; The first spring is fixed between the two bent plates; The reset component is mounted on the base plate. An arc-shaped limiting plate is fixed to the top of the base plate; The bending plate includes an inclined section, a long section, and a short section. The long section is fixed to one end of the inclined section near the central axis of the outer box, and the short section is fixed to the other end of the inclined section. The long section extends into the gap between two adjacent sliders.

[0013] Furthermore, the reset component includes: The skateboard slides to the top of the baseboard; The second spring is fixed between the slide plate and the base plate.

[0014] Furthermore, the base includes a fixing block fixed to the bottom of the outer casing and a plurality of support columns fixed to the top of the fixing block, wherein the first magnetic shielding plate is fixed to the top of the support columns.

[0015] Furthermore, a limiting frame is provided inside the outer casing, which extends along the length of the outer casing and is used to limit the lateral displacement of the casing on the slider when the slider slides along the guide groove.

[0016] (III) Beneficial Effects Compared with the prior art, the present invention provides a laser inspection device for the flatness of server chassis, which has the following advantages: 1. This server chassis flatness laser inspection equipment uses a set flat conveyor component to drive a slider to move on the first magnetic plate, replacing the use of a belt conveyor in the flatness inspection area. This eliminates the influence of slight unevenness on the belt surface on the flatness inspection, improves the flatness of the chassis during the conveying process, and avoids the decrease in movement stability caused by screw wear after long-term use compared to the screw drive method.

[0017] 2. This server chassis flatness laser inspection equipment utilizes a circumferentially moving second electromagnet and a linearly moving second electromagnet and slider. When the magnetic drive component rotates to a position perpendicular to the guide groove, the distance between the magnetic drive component and the first electromagnet is at its maximum, the magnetic attraction force is at its minimum, and the speed at which the first electromagnet, slider, and chassis move is at its slowest. At this time, when the clamping component fixes the chassis for inspection, the acceleration of the chassis from moving to rest is small, and the vibration amplitude is also small. The chassis is relatively stable at the moment of inspection. Therefore, the vibration generated by the chassis being fixed during transportation has little impact on the flatness inspection. Moreover, the small acceleration and vibration amplitude of the chassis when it is fixed during transportation improve the stability of the chassis at the moment of inspection from moving to being fixed.

[0018] 3. The server chassis flatness laser inspection equipment, through the setting of magnetic drive components and second magnetic shielding plates, and the structural design of the first electromagnet, second electromagnet, first magnetic shielding plate and second magnetic shielding plate, restricts the movement path of magnetic lines of force, which not only ensures the strength of the magnetic attraction to drive the chassis to move, but also avoids magnetizing the chassis, reducing the cost of re-demagnetizing the chassis after magnetization during the magnetic drive process.

[0019] 4. This server chassis flatness laser inspection equipment, through the setting of limit components, can push the remaining sliders to fill the gap and limit their shaking after the slider of the transport chassis leaves the initial position, so as to avoid the positional deviation of other sliders affecting the transport and inspection of the chassis. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 This is a cross-sectional view of the entire invention.

[0022] Figure 3 This is a perspective view of the planar conveying assembly and the limiting frame of the present invention.

[0023] Figure 4 This is a front view of the planar conveying assembly and the limiting frame of the present invention.

[0024] Figure 5 This is a schematic diagram of the planar conveying assembly of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the magnetic drive component of the present invention.

[0026] Figure 7 This is a schematic diagram of the slider and rack of the present invention.

[0027] Figure 8 This is a schematic diagram of the limiting component of the present invention.

[0028] In the diagram: 1. Outer casing; 2. Laser detection head; 3. First conveyor belt; 4. Second conveyor belt; 5. Planar conveyor assembly; 51. Base; 52. First magnetic shielding plate; 53. Slider; 54. First electromagnet; 55. Magnetic drive assembly; 551. Second electromagnet; 552. Ring; 553. Drive component; 6. Second magnetic shielding plate; 7. Anti-slip plate; 8. Press switch; 9. Cylinder; 10. Arc-shaped guide plate; 11. Rack; 12. Base plate; 13. Limiting assembly; 131. Bending plate; 132. First spring; 133. Reset assembly; 1331. Sliding plate; 1332. Second spring; 134. Arc-shaped limiting plate; 14. Limiting frame. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] Example 1: This embodiment provides a laser inspection device for the flatness of a server chassis, which has the following technical features.

[0034] Please see Figures 1-6A laser inspection device for server chassis flatness includes an outer casing 1 and a laser inspection head 2 disposed inside the outer casing 1. The outer casing 1 has an inlet and an outlet on its two sides. A first conveyor belt 3 and a second conveyor belt 4, respectively passing through the inlet and outlet, are installed on the outer casing 1. A flat conveying assembly 5 is disposed inside the outer casing 1. The flat conveying assembly 5 includes: a base 51 fixed to the bottom of the outer casing 1; a first magnetic shielding plate 52 fixed to the top of the base 51, the first magnetic shielding plate 52 having a guide groove extending along the length of the outer casing 1; a slider 53 slidably disposed on the top of the first magnetic shielding plate 52 for supporting the chassis to be inspected; and a first electromagnet 54 disposed on the slider. The bottom of block 53 extends into the guide groove; the magnetic drive assembly 55 is disposed on the outer periphery of the first magnetic shielding plate 52 and arranged coaxially with the first magnetic shielding plate 52; wherein, when the magnetic drive assembly 55 rotates along the circumference of the first magnetic shielding plate 52, the distance between the magnetic drive assembly 55 and the first electromagnet 54 passing through the guide groove changes with the position of the first electromagnet 54 in the guide groove, so that the magnetic attraction between the magnetic drive assembly 55 and the first electromagnet 54 changes with the change of distance. When the magnetic drive assembly 55 rotates to be opposite to the axis of the first magnetic shielding plate 52, the distance between it and the first electromagnet 54 is the largest, and the moving speed of the slider 53 is the slowest.

[0035] Working principle: Both the first magnetic shielding plate 52 and the second magnetic shielding plate 6 are made of soft magnetic materials with high magnetic permeability. The first magnetic shielding plate 52 is made of electrical pure iron, and the second magnetic shielding plate 6 is made of permalloy. The chassis to be inspected for flatness is placed on the first conveyor belt 3, which transports the chassis to the slider 53. The laser detection head 2 is positioned directly above the first magnetic shielding plate 52. When the slider 53 moves to the middle of the first magnetic shielding plate 52, it is fixed. At this time, the laser detection head 2 performs flatness inspection on the chassis. After the inspection is completed, the slider 53 drives the chassis to continue moving until it moves to the second conveyor belt 4, where it is carried out from the outlet. Due to the movement path of the magnetic drive component 55, the process of moving the slider 53 starts fast, slows down, and then speeds up again. The slider 53 moves the slowest when it is in the middle of the first magnetic shielding plate 52, which makes it easier to fix the slider 53 and the chassis. At the same time, it reduces the vibration amplitude caused by the chassis changing from a moving state to a stationary state. The slider 53 transports the chassis along the first magnetic shielding plate 52. Compared with belt transmission, it avoids the influence of the slight unevenness of the belt surface on the flatness of the chassis when it is placed. Moreover, the magnetic non-contact movement of the slider 53, compared with the motor and ball screw drive, also avoids the situation of decreased motion stability caused by friction after long-term use of the ball screw.

[0036] The specific process of the flat conveyor assembly 5 conveying the chassis in the detection area and the laser detection head 2 performing flatness detection on the chassis is as follows: The first conveyor belt 3 conveys the chassis to a slider 53 near the entrance on the first magnetic plate 52. The magnetic drive assembly 55 and the first electromagnet 54 are simultaneously energized to generate magnetic attraction. The magnetic drive assembly 55 rotates around the axis of the first magnetic plate 52. Due to the limiting effect of the first electromagnet 54 on the slider 53, the magnetic attraction between the magnetic drive assembly 55 and the first electromagnet 54 drives the first electromagnet 54, the slider 53 and the chassis to move along the guide groove. The slider 53 is moved on the first magnetic plate 52 by magnetic drive, which replaces the direct use of belt conveyor in the flatness detection area. This eliminates the influence of the slight unevenness of the belt surface on the flatness detection and improves the flatness of the chassis during the conveying process. Compared with the screw drive method, the screw wears down after long-term use, which leads to a decrease in accuracy. This method can avoid the situation where the movement stability decreases due to screw wear after long-term use.

[0037] As the magnetic drive assembly 55 moves circumferentially along the first magnetic shielding plate 52, the first electromagnet 54 and the slider 53 move linearly along the guide groove. The distance between the magnetic drive assembly 55 and the first electromagnet 54 first increases and then decreases. When the magnetic drive assembly 55 rotates to a position perpendicular to the guide groove, the distance between the magnetic drive assembly 55 and the first electromagnet 54 is at its maximum, the magnetic attraction is at its minimum, and the speed at which the first electromagnet 54, the slider 53, and the chassis move is at its slowest. At this time, when the clamping member fixes the chassis for testing, the acceleration of the chassis from moving to rest is small, and the vibration amplitude is also small. The chassis is relatively stable at the moment of testing. Therefore, the vibration generated by the chassis being fixed during transportation has little impact on the flatness detection. Moreover, the small acceleration and vibration amplitude of the chassis when it is fixed during transportation improve the stability of the chassis at the moment of testing when it moves from moving to being fixed.

[0038] Please see Figure 5 and Figure 6 The magnetic drive assembly 55 includes a second electromagnet 551, which is a C-shaped electromagnet with its C-shaped opening fitted onto the outer periphery of the first magnetic shielding plate 52 and slidingly engaging with the outer periphery; a ring 552, fixed to the bottom of the second electromagnet 551, which is coaxially arranged with the first magnetic shielding plate 52; a drive member 553, fixed to the base 51, used to drive the ring 552 to rotate; a second magnetic shielding plate 6 is fixedly connected to the top of the slider 53; an anti-slip plate 7 is fixedly connected to the top of the second magnetic shielding plate 6; a push switch 8 is embedded in the top of the anti-slip plate 7; and the push switch 8 is electrically connected to both the first electromagnet 54 and the second electromagnet 551.

[0039] In practical use, the chassis moves from the first conveyor belt 3 to one of the sliders 53. The chassis presses the push switch 8 on the slider 53, triggering the first electromagnet 54, the second electromagnet 551, and the drive unit 553 to be energized synchronously. The pole face of the second electromagnet 551, located below the first magnetic shielding plate 52, is also below the first electromagnet 54. The resulting magnetic attraction drives the first electromagnet 54 to move. At the same time, the C-shaped structure of the second electromagnet 551 causes the magnetic lines of force to start from the lower pole face, bypass the edge of the first magnetic shielding plate 52, and reach the upper pole face. This avoids the magnetic lines of force being "short-circuited" inside the magnetic shielding plate, ensuring the magnitude of the magnetic force driving the first electromagnet 54, the slider 53, and the chassis is maximized. The magnetic field lines are all confined within their own C-shaped structures, reducing the leakage of magnetic fields outwards at the source. The first electromagnet 54 is covered by the second magnetic shielding plate 6, providing a horizontal path with extremely low resistance for the upward magnetic field lines of the first electromagnet 54. The magnetic field lines of the first electromagnet 54, starting from the N pole, will preferentially enter the interior of the second magnetic shielding plate 6, and "detour" back to the S pole of the first electromagnet 54 from inside the plate. By utilizing the structural design of the first electromagnet 54, the second electromagnet 551, the first magnetic shielding plate 52, and the second magnetic shielding plate 6, the movement path of the magnetic field lines is restricted. This ensures the strength of the magnetic attraction that drives the chassis to move, while also avoiding the magnetization of the chassis, reducing the cost of remagnetizing and demagnetizing the chassis after the magnetic drive process.

[0040] The driving component 553 includes a motor fixed on the base 51 and a gear fixed on the output end of the motor. The inner ring 552 has a toothed groove that meshes with the gear. When the push switch 8 is pressed, the motor is simultaneously powered on. The motor drives the ring 552 to rotate through the meshing of the gear and the toothed groove, which in turn drives the second electromagnet 551 to rotate. Since the specific structure of the motor drive is a common means in the field, it will not be described in detail.

[0041] Please see Figure 6 The base 51 includes a fixing block fixed to the bottom of the outer casing 1 and a plurality of support columns fixed to the top of the fixing block, and the first magnetic shielding plate 52 is fixed to the top of the support columns.

[0042] In use, the gap between the support columns reduces the obstruction of the first electromagnet 54 and the second electromagnet 551, ensuring the strength of the magnetic force between the second electromagnet 551 and the first electromagnet 54.

[0043] Please see Figure 1 and Figure 3 The outer casing 1 is provided with a limiting frame 14, which extends along the length of the outer casing 1 and is used to limit the lateral displacement of the casing on the slider 53 when the slider 53 slides along the guide groove.

[0044] Working principle: The limit frame 14 is connected to a cylinder, and the fixed end of the cylinder is fixed to the outer casing 1. When the cylinder is not activated, the limit frame 14 restricts the movement range of the chassis within the outer casing 1, so that when the chassis is moved, it can only move along the length direction of the outer casing 1. When the chassis moves to the detection position in the middle of the first magnetic shielding plate 52, the cylinder pushes the limit frame 14 close to the chassis until it clamps and fixes the chassis from both sides, completing the clamping and fixing process of the chassis, which facilitates the flatness detection of the chassis.

[0045] Example 2: This embodiment provides a server chassis flatness laser inspection device, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0046] Please see Figure 7 The bottom of the slider 53 has a storage groove, and a cylinder 9 is provided in the storage groove. The cylinder 9 can slide along the height direction of the storage groove. The first electromagnet 54 is fixed to the bottom of the cylinder 9.

[0047] Working principle: The cylinder 9 places the first electromagnet 54 completely below the first magnetic shielding plate 52. On the one hand, this facilitates the alignment of one pole face of the second electromagnet 551, ensuring the magnitude of the magnetic attraction between the first electromagnet 54 and the second electromagnet 551. On the other hand, it helps the first magnetic shielding plate 52 and the second magnetic shielding plate 6 to prevent the first electromagnet 54 and the second electromagnet 551 from magnetizing the chassis.

[0048] Please see Figures 1-8 An arc-shaped guide plate 10 is fixedly connected to the bottom of the first magnetic shielding plate 52. The arc-shaped guide plate 10 is located at one end of the first magnetic shielding plate 52 near the outlet. A rack 11 is fixedly connected to the top of the arc-shaped guide plate 10. A rack segment is provided on the outer side of the cylinder 9. The rack 11 meshes with the rack segment.

[0049] In practical use, after the chassis completes the flatness detection at the axis of the first magnetic shielding plate 52, the second electromagnet 551 drives the first electromagnet 54, the slider 53 and the chassis to move towards the second conveyor belt 4. During this process, the cylinder 9 is limited by the rack 11 and rotates around its own axis until the cylinder 9 rotates 180°, which drives the slider 53 and the chassis to rotate 180° synchronously. Then the slider 53 continues to drive the chassis to move towards the second conveyor belt 4 until the slider 53 moves to the outer periphery of the first magnetic shielding plate 52. The chassis on the slider 53 contacts the second conveyor belt 4 and is transported to the outlet by the second conveyor belt 4. The limiting structure allows the slider 53 to rotate after moving the chassis and re-form a ring structure with other sliders 53, which facilitates the reuse of the slider 53.

[0050] When the slider 53 moves along the guide groove toward the outlet, the first electromagnet 54 at the bottom of the slider 53 slides along the upper surface of the arc-shaped guide plate 10 and is squeezed by the arc-shaped guide plate 10 and gradually enters the receiving groove at the bottom of the slider 53, so that the slider 53 is not blocked by the guide groove when it moves along the circumference of the first magnetic shielding plate 52.

[0051] Please see Figure 3 and Figure 8 A base plate 12 is fixedly connected to the lower part of the first magnetic shielding plate 52 near the outlet. The top of the base plate 12 is provided with a limiting component 13 for limiting the slider 53. The limiting component 13 includes a bending plate 131, both of which are slidably connected to the top of the base plate 12; a first spring 132, which is fixed between the two bending plates 131; a reset component 133, which is disposed on the base plate 12; and an arc-shaped limiting plate 134, which is fixed to the top of the base plate 12. The bending plate 131 includes an inclined section, a long plate section, and a short plate section. The long plate section is fixed at one end of the inclined section near the central axis of the outer box 1, and the short plate section is fixed at the other end of the inclined section. The long plate section extends into the gap between two adjacent sliders 53. The reset component 133 includes a sliding plate 1331, which is slidably connected to the top of the base plate 12; and a second spring 1332, which is fixed between the sliding plate 1331 and the base plate 12.

[0052] Working principle: When the slider 53 near the entrance is driven to move along the guide groove by the magnetic attraction between the first electromagnet 54 and the second electromagnet 551, a gap is created on the outer periphery of the first magnetic shielding plate 52. The other sliders 53, no longer restrained, are prone to wobbling. The first spring 132 pushes the two bent plates 131 away from each other. The longer section of the bent plate 131 pushes the sliders 53 on the outer periphery of the first magnetic shielding plate 52 to move circumferentially along the first magnetic shielding plate 52 until the gap created on the outer periphery after the slider 53 of the conveyor box is moved is filled. The end of the outer periphery of the first magnetic shielding plate 52 near the exit is filled by the bent plate 131 and the first spring 132 until the slider 53 of the conveyor box moves to the end of the first magnetic shielding plate 52 near the exit, pushing the bent plate 131 along the... The base plate 12 moves away from the first magnetic shielding plate 52. After the bending plate 131 pushes the slide plate 1331 to move, it stretches and deforms the second spring 1332. The sliders 53 are reassembled into a ring structure on the outer periphery of the first magnetic shielding plate 52 until the sliders 53 near the entrance are driven to move along the guide groove. The elastic force of the second spring 1332 pulls the slide plate 1331 and the bending plate 131 towards the first magnetic shielding plate 52. The bending plate 131 is gradually approached by the limit of the arc-shaped limiting plate 134 and extends back into the gap between the two sliders 53. After the sliders 53 of the transport chassis leave the initial position, it can push the remaining sliders 53 to fill the gap and limit their shaking, so as to avoid the positional displacement of other sliders 53 from affecting the transport and inspection of the chassis.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0054] 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 laser inspection device for the flatness of a server chassis, comprising an outer casing (1) and a laser inspection head (2) disposed within the outer casing (1), characterized in that, The outer casing (1) has an inlet and an outlet on each side. A first conveyor belt (3) and a second conveyor belt (4) are installed on the outer casing (1) and pass through the inlet and the outlet respectively. A planar conveyor assembly (5) is provided inside the outer casing (1). The planar conveyor assembly (5) includes: The base (51) is fixed to the bottom of the outer box (1); The first magnetic shielding plate (52) is fixed to the top of the base (51), and a guide groove extending along the length direction of the outer box (1) is provided on the first magnetic shielding plate (52). The slider (53) is slidably disposed on the top of the first magnetic shielding plate (52) and is used to support the chassis to be tested; The first electromagnet (54) is located at the bottom of the slider (53) and extends into the guide groove; A magnetic drive assembly (55) is disposed on the outer periphery of the first magnetic shielding plate (52) and arranged coaxially with the first magnetic shielding plate (52); When the magnetic drive assembly (55) rotates circumferentially along the first magnetic shielding plate (52), the distance between the magnetic drive assembly (55) and the first electromagnet (54) passing through the guide groove changes with the position of the first electromagnet (54) in the guide groove, so that the magnetic attraction between the magnetic drive assembly (55) and the first electromagnet (54) changes with the distance. When the magnetic drive assembly (55) rotates to be opposite to the axis of the first magnetic shielding plate (52), the distance between it and the first electromagnet (54) is the largest.

2. The server chassis flatness laser inspection equipment according to claim 1, characterized in that, The magnetic drive assembly (55) includes: The second electromagnet (551) is a C-shaped electromagnet, and its C-shaped opening is engaged with the outer periphery of the first magnetic shielding plate (52) and slides in cooperation with the outer periphery. A circular ring (552) is fixed to the bottom of the second electromagnet (551), and the circular ring (552) is coaxially arranged with the first magnetic shielding plate (52); The driving component (553) is fixed on the base (51) and is used to drive the ring (552) to rotate.

3. The server chassis flatness laser inspection equipment according to claim 2, characterized in that, The top of the slider (53) is fixedly connected to a second magnetic shielding plate (6), the top of the second magnetic shielding plate (6) is fixedly connected to an anti-slip plate (7), and the top of the anti-slip plate (7) is embedded with a push switch (8). The push switch (8) is electrically connected to both the first electromagnet (54) and the second electromagnet (551).

4. The server chassis flatness laser inspection equipment according to claim 1, characterized in that, The bottom of the slider (53) is provided with a storage groove, and a cylinder (9) is provided in the storage groove. The cylinder (9) can slide along the height direction of the storage groove, and the first electromagnet (54) is fixed to the bottom of the cylinder (9).

5. The server chassis flatness laser inspection equipment according to claim 4, characterized in that, An arc-shaped guide plate (10) is fixedly connected to the bottom of the first magnetic shielding plate (52). The arc-shaped guide plate (10) is located at one end of the first magnetic shielding plate (52) near the outlet. A rack (11) is fixedly connected to the top of the arc-shaped guide plate (10). A rack segment is provided on the outside of the cylinder (9). The rack (11) meshes with the rack segment.

6. The server chassis flatness laser inspection equipment according to claim 1, characterized in that, The first magnetic shielding plate (52) is fixedly connected to a base plate (12) at the lower end near the outlet. The top of the base plate (12) is provided with a limiting component (13) for limiting the slider (53).

7. The server chassis flatness laser inspection device according to claim 6, characterized in that, The limiting component (13) includes: Bending plate (131), both bending plates (131) are slidably connected to the top of the base plate (12); The first spring (132) is fixed between the two bent plates (131); The reset assembly (133) is mounted on the base plate (12); An arc-shaped limiting plate (134) is fixed to the top of the base plate (12); The bending plate (131) includes an inclined section, a long plate section and a short plate section. The long plate section is fixed to one end of the inclined section near the central axis of the outer box (1), and the short plate section is fixed to the other end of the inclined section. The long plate section extends into the gap between two adjacent sliders (53).

8. The server chassis flatness laser inspection device according to claim 7, characterized in that, The reset component (133) includes: The skateboard (1331) is slidably connected to the top of the base plate (12); The second spring (1332) is fixed between the slide plate (1331) and the base plate (12).

9. The server chassis flatness laser inspection equipment according to claim 1, characterized in that, The base (51) includes a fixing block fixed to the bottom of the outer box (1) and a plurality of support columns fixed to the top of the fixing block, wherein the first magnetic shielding plate (52) is fixed to the top of the support columns.

10. The server chassis flatness laser inspection equipment according to claim 1, characterized in that, The outer casing (1) is provided with a limiting frame (14), which extends along the length of the outer casing (1) and is used to limit the lateral displacement of the casing on the slider (53) when the slider (53) slides along the guide groove.

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