Flatness inspection equipment

Abstract

A plurality of floating assemblies are arranged on a bearing plate at intervals, each floating assembly comprises a floating block, the floating blocks are arranged on the bearing plate in a sliding and penetrating mode, the two ends of each floating block protrude out of the bearing plate respectively, meanwhile, a plurality of detection assemblies are installed below the bearing plate, each detection assembly comprises a displacement sensor, and the displacement sensors are arranged on the bearing plate. The displacement sensor directly faces the floating block and is used for detecting the height of the floating block. Thus, after a product is placed on the bearing plate, the product is pressed on the floating blocks to enable the floating blocks to move downwards, the height of the floating blocks is detected through the high-precision displacement sensor, the detected height data of the floating blocks are compared with preset data through the controller, and whether the flatness of the product is qualified or not can be rapidly judged. According to the mode of feeding back the flatness of the product through point type detection, the detection precision and the detection efficiency can be greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of flatness inspection technology, and in particular to a flatness inspection device with improved detection accuracy and efficiency. Background Technology

[0002] With the development of smart devices (such as mobile phones, tablets, and laptops), people have placed higher demands on the overall appearance and smoothness of these devices. To improve product accuracy, manufacturers need to inspect the flatness of products during the production process. However, ordinary measuring tools have poor inspection effects, low flatness accuracy, and low testing efficiency. Therefore, three-dimensional measuring instruments have been introduced to achieve inspection through coordinate methods. While this improves inspection accuracy, it requires measuring multiple points, resulting in low efficiency. Furthermore, when directly inspecting products, the TP (Thermoplastic Elastomer) or glass on the product surface can affect the accuracy of displacement sensors, thus impacting the overall inspection accuracy.

[0003] Therefore, it is necessary to provide a flatness inspection device with high detection accuracy and efficiency, which can avoid the influence of TP or glass on the product on the accuracy of displacement sensors, in order to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a flatness inspection device with high detection accuracy and efficiency, which can avoid the influence of TP or glass on the product on the accuracy of the displacement sensor.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: A flatness inspection device is provided, comprising a controller, a base, multiple floating components, and multiple detection components; wherein, the base includes a support plate for supporting the product; multiple floating components are spaced apart and mounted on the support plate, each floating component including a floating block, the floating block slidingly passing through the support plate with both ends protruding from the support plate; multiple detection components are respectively installed below each floating component, each detection component including a displacement sensor, the displacement sensor being positioned directly opposite the floating block for detecting the height of the floating block; the controller is electrically connected to each displacement sensor for acquiring the detection data from each displacement sensor and determining whether the flatness of the product is qualified.

[0006] Preferably, multiple floating components are evenly arranged along the edge of the support plate to detect multiple points at the edge of the product, thereby improving detection accuracy.

[0007] Preferably, multiple floating components are evenly arranged along the edge of the support plate and also evenly arranged in the middle of the support plate to detect the edge position and multiple points in the middle of the product, thereby further improving the detection accuracy.

[0008] Preferably, the upper end of the floating block protrudes from the support plate by a height of 3mm to 5mm.

[0009] Preferably, each of the floating components further includes an elastic element connected to the floating block. The elastic element maintains the upper end of the floating block protruding above the support plate and drives the floating block to move upwards and reset above the support plate. The elastic element ensures that the floating block always protrudes above the support plate in its initial state, and provides a buffering effect when the floating block is pressed down by the product. After the product is removed, the elastic element can drive the floating block to automatically reset for the next product inspection, thus improving inspection efficiency.

[0010] Preferably, the floating block has a protruding abutment portion that intersects with its sliding direction. The elastic member abuts against the abutment portion, causing the upper end of the floating block to protrude above the support plate. When the elastic member drives the floating block to move upwards towards the support plate, the abutment portion abuts against the support plate to prevent the floating block from detaching from the support plate.

[0011] Preferably, each of the floating components further includes a fixing block, which is fixed below the support plate. The floating block slides through the fixing block and its lower end protrudes below the fixing block. The elastic element abuts between the fixing block and the support plate. The fixing block facilitates the installation of the floating block and the elastic element.

[0012] Preferably, the base further includes a mounting plate fixed below the support plate, a fixing block fixed to the mounting plate and located below it, a floating block slidably passing through the mounting plate, and an elastic element abutting between the fixing block and the mounting plate. The mounting plate facilitates the installation of both the support plate and the floating assembly.

[0013] Preferably, each of the detection components further includes a mounting block, which is fixed inside the base and located below the support plate. The displacement sensor is fixed to the mounting block and faces the floating block. The mounting block makes it easier to install and align the displacement sensor.

[0014] Preferably, the base further includes a limiting block, which is installed at the edge of the support plate and surrounds each of the floating blocks, and the limiting block is used to limit the position of the product.

[0015] Preferably, the limiting block includes two limiting sides arranged at an included angle, and the limiting block is installed at at least one apex position of the bearing plate.

[0016] Preferably, the flatness inspection device further includes a first sensor and a second sensor, the first sensor and the second sensor being respectively installed on the support plate and / or the base and both being electrically connected to the controller, and respectively used to detect whether a product is placed on the support plate and whether the product is placed upside down.

[0017] Preferably, the support plate has a first groove recessed in the middle and a second groove recessed at the edge of the support plate. The first sensor is housed in the first groove and the second sensor is housed in the second groove.

[0018] Preferably, the flatness inspection equipment further includes a display screen and an alarm. The display screen is mounted on the base and angled to the support plate. The display screen is electrically connected to the controller and is used to display the test data and test results of the product. The alarm is mounted on the base and electrically connected to the controller and is used to alert the user regarding the test results of the product.

[0019] Preferably, the alarm is at least one of a buzzer, an indicator light, and a vibrator.

[0020] Preferably, the base also includes an inclined plate, which is installed on one side of the support plate and extends upward at an angle. The display screen and the alarm are respectively installed on the inclined plate, so as to facilitate viewing by the user.

[0021] Preferably, the flatness inspection device further includes a barcode scanner, which is mounted on the base and protrudes above the support plate for scanning the product to be inspected.

[0022] Compared with existing technologies, the flatness inspection device of this invention features multiple floating components on a support plate. Each floating component includes a floating block that slides through the support plate with both ends protruding from it. A displacement sensor is positioned below each floating block. When a product is placed on the support plate, it is pressed against the floating blocks, causing them to move downwards. The height of the floating blocks is then detected by high-precision displacement sensors. The controller compares the detected height data with preset data to quickly determine if the product's flatness is acceptable. This application uses point-based detection to provide feedback on the product's flatness, significantly improving both detection accuracy and efficiency. Furthermore, it avoids the influence of TP (plate material) or glass on the product on the displacement sensor's accuracy, further enhancing detection precision. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the flatness inspection device of this utility model.

[0024] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0025] Figure 3 yes Figure 1 A structural diagram from another angle.

[0026] Figure 4 yes Figure 3 Enlarged diagram of part B.

[0027] Figure 5 yes Figure 1 A schematic diagram of the internal structure.

[0028] Figure 6 yes Figure 5 A schematic diagram of the floating component.

[0029] Figure 7 yes Figure 5 A schematic diagram of the detection component.

[0030] Figure 8 yes Figure 1 A sectional view.

[0031] Figure 9 yes Figure 8 Enlarged schematic diagram of part C.

[0032] Figure 10 yes Figure 9 A further enlarged schematic diagram of the floating component. Detailed Implementation

[0033] Embodiments of the present invention will now be described with reference to the accompanying drawings, in which similar element reference numerals represent similar elements. It should be noted that the directional descriptions involved in the present invention, such as up, down, left, right, front, and back, indicating directions or positional relationships, are based on the directions or positional relationships shown in the drawings and are only for the convenience of describing the technical solutions of this application or / 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, and therefore should not be construed as a limitation of this application. The terms "first," "second," etc., described are only used to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0034] Combination Figures 1-10As shown, the flatness inspection device 100 provided by this utility model is particularly suitable for inspecting the flatness of electronic devices. The electronic devices can be various handheld devices (e.g., mobile phones, tablets, etc.), computing devices (e.g., laptops, etc.), vehicle-mounted devices (e.g., vehicle displays, etc.), wearable devices (e.g., smartwatches, etc.), and various forms of user equipment (UE), mobile station (MS), terminal device, etc., which are not specifically limited in this application.

[0035] Continue to combine Figures 1-10 As shown, in one embodiment of this utility model, the provided flatness inspection device 100 includes a controller (not shown), a base 110, multiple floating components 120, and multiple detection components 130. The base 110 has a hollow structure, and a support plate 111 is provided on the top of the base 110 for supporting the product. The multiple floating components 120 are arranged at least along the edge of the support plate 111, and each floating component 120 includes a floating block 121, which slides through the support plate 111, with its two ends protruding above and below the support plate 111, respectively. The multiple detection components 130 are respectively installed below each floating component 120, and each detection component 130 includes a displacement sensor 131, which is positioned directly opposite the floating block 121 and used to detect the height of the floating block 121. The controller is electrically connected to each displacement sensor 131 to acquire the detection data of all displacement sensors 131 and compare the acquired detection data with preset data to determine whether the flatness of the product is qualified.

[0036] Combination Figure 1 , Figure 3As shown, in one embodiment, multiple floating components 120 are evenly arranged along the edge of the support plate 111. In another embodiment, in addition to being evenly arranged along the edge of the support plate 111, multiple floating components 120 are also evenly arranged in the middle of the support plate 111. The specific number of floating components 120 is not limited. For example, in one embodiment, three floating components 120 are arranged at each end of the length direction of the support plate 111, and the three floating components 120 are spaced apart along the width direction of the support plate 111. In addition, two floating components 120 are arranged in the middle of the support plate 111, and the two floating components 120 are respectively close to the two sides of the width direction of the support plate 111. Therefore, a total of eight floating components 120 are arranged. Of course, the number and specific arrangement of floating components 120 are not limited to this embodiment, and can be flexibly arranged according to the size, shape, etc. of the product to be tested.

[0037] The following is combined Figure 3-4 , Figure 6 , Figure 8-10 As shown, in one embodiment of this utility model, each floating component 120 further includes an elastic element 122. The elastic element 122 is connected to the floating block 121 and is used to ensure that the upper end of the floating block 121 always protrudes above the support plate 111, and also to drive the floating block 121 to move upward and reset above the support plate 111. Specifically, under the elastic force of the elastic element 122, when the floating block 121 is in its initial position, its upper end always protrudes above the support plate 111, ensuring that the floating block 121 can be held down after the product is placed on the support plate 111. When the product is placed on the support plate 111, it is held down by the upper end of the floating block 121 and moves downward along the support plate 111. During this process, the elastic element 122 deforms, and the elastic force has a certain buffering effect on the downward movement of the floating block 121. When the product is removed, the elastic element 122 restores its deformation and drives the floating block 121 to move upward along the support plate 111, so that the floating block 121 automatically resets and its upper end protrudes above the support plate 111 again, so as to carry out the inspection of the next product, thereby improving the inspection efficiency.

[0038] See Figure 4 As shown, in this embodiment, under the elastic force of the elastic member 122, the upper end of the floating block 121 always protrudes from the support plate 111 by a height of 3mm to 5mm, that is, the height from the top of the floating block 121 to the plane of the support plate 111 is 3mm to 5mm. Of course, this height can be flexibly set according to the specific product to be tested.

[0039] Combination Figure 8-10As shown, in one specific embodiment, the elastic element 122 is installed below the support plate 111 and abuts against the floating block 121. The elastic force generated by the elastic element 122 always tends to drive the floating block 121 to move upwards towards the support plate 111. More specifically, the floating block 121 has a rod-shaped structure, and the floating block 121 has a protruding abutment portion 1221 that intersects with its sliding direction. That is, the floating block 121 has an abutment portion 1221 that protrudes radially. The elastic element 122 is sleeved on the floating block 121, and the upper end of the elastic element 122 abuts against the abutment portion 1221. Thus, when the product presses down on the floating block 121 and causes it to move downward along the support plate 111, the elastic member 122 is deformed by the abutment part 1221. When the elastic member 122 returns to its original shape, it pushes against the abutment part 1221 and drives the floating block 121 to move upward toward the support plate 111. At the same time, the abutment part 1221 abuts against the support plate 111 to prevent the floating block 121 from moving upward and detaching from the support plate 111.

[0040] Combination Figure 3-4 , Figure 6 , Figure 8-10 As shown, in one embodiment of this utility model, each floating component 120 further includes a fixing block 123. The fixing block 123 is fixed below the support plate 111, and the floating block 121 slides through the fixing block 123, with the lower end of the floating block 121 protruding below the fixing block 123. Figure 9-10 As shown. The lower end of the elastic element 122 abuts against the fixed block 123. The fixed block 123 makes the installation of the floating block 121 and the elastic element 122 more convenient. Furthermore, during the downward movement of the floating block 121, the elastic element 122 is pressed between the abutting part 1221 and the fixed block 123, causing it to deform. When the product is removed, the elastic element 122 returns to its original shape and drives the floating block 121 to move upward and reset.

[0041] In one specific embodiment, the fixing block 123 has a groove 1231 in the middle. After the fixing block 123 is fixed below the support plate 111, an installation space is formed between the groove 1231 and the support plate 111. The elastic member 122 is accommodated in the groove 1231 and abuts against the bottom of the groove 1231. The groove 1231 makes the installation of the elastic member 122 more convenient and stable.

[0042] The following is combined Figure 1 , Figure 3 , Figure 5 , Figure 8-10As shown, in one embodiment of this utility model, the base 110 further includes a mounting plate 112, a side plate 113, and a bottom plate 114. The side plate 113 is vertically mounted on the edge of the bottom plate 114, and the mounting plate 112 is fixed to the top of the side plate 113. The bottom plate 114, the side plate 113, and the mounting plate 112 together form the hollow structure. The supporting plate 111 is fixed above the mounting plate 112, and the fixing block 123 of the floating component 120 is fixed below the mounting plate 112, thus facilitating the installation of both the supporting plate 111 and the floating component 120. Furthermore, each detection component 130 is respectively mounted on the bottom plate 114 and housed within the hollow structure, thereby providing dust protection and other protection for the displacement sensor 131, improving detection accuracy and extending the service life of the flatness inspection device 100.

[0043] The following is combined Figure 3-4 , Figure 8-10 As shown, in one specific embodiment, a first through hole 1111 is formed through the support plate 111, the inner diameter of which is slightly larger than the outer diameter of the floating block 121. Correspondingly, a second through hole 1121 is formed through the mounting plate 112, the inner diameter of which is larger than the outer diameter of the floating block 121, and a radially extending blocking portion 1122 is provided within the second through hole 1121. Figure 10 As shown. After the floating component 120 is installed, the fixing block 123 is fixed below the mounting plate 112 corresponding to the second through hole 1121. The floating block 121 slides through the second through hole 1121 and the first through hole 1111, and under the elastic force of the elastic member 122, the abutting part 1221 on the floating block 121 abuts against the blocking part 1122. Figure 9-10 As shown, this achieves the limitation of floating block 121.

[0044] Understandably, it is also feasible to omit the blocking part 1122 and allow the abutting part 1221 to directly abut against the lower surface of the mounting plate 112.

[0045] The following is combined Figure 5 , Figure 7-9As shown, in one embodiment of this utility model, multiple detection components 130 are respectively fixed on the base plate 114 of the base 110 and face each floating component 120. Specifically, each detection component 130 also includes a mounting block 132, which is preferably L-shaped, but not limited thereto. The lower end of the mounting block 132 is fixed to the base plate 114 of the base 110, and the displacement sensor 131 is fixed to the side of the mounting block 132, with the detection end 1311 of the displacement sensor 131 facing the floating block 121. The mounting block 132 makes the installation and alignment of the displacement sensor 131 more convenient. Specifically, the center line P of the detection end 1311 of the displacement sensor 131 and the center line P of the floating block 121 are on the same straight line, such as... Figure 8-9 As shown. In this way, when the floating block 121 moves up and down in the vertical direction, the detection end 1311 of the displacement sensor 131 can accurately detect the height of the floating block 121, thereby accurately detecting the flatness of the product.

[0046] The following is combined Figure 1 , Figure 3 , Figure 8 As shown, in one embodiment of this utility model, the base 110 further includes a limiting block 115. The limiting block 115 is installed at the edge of the support plate 111 and surrounds each floating block 121. The limiting block 115 is used to limit the product. In a specific embodiment, the limiting block 115 includes two limiting sides arranged at an included angle, specifically in an L-shape. The limiting block 115 is installed at the top corner of the support plate 111. For example, limiting blocks 115 are installed at the four top corners of the support plate 111, and the four limiting blocks 115 limit the product, ensuring accurate positioning of the product after placement. Of course, it is not limited to installing limiting blocks 115 at all four top corners of the support plate 111; installation at only some top corners is also feasible. Moreover, the limiting block 115 can also be of other shapes and installed at other positions on the support plate 111, as long as it can limit the product.

[0047] The following is combined Figure 1-3 As shown, in one embodiment of this utility model, the flatness inspection device 100 further includes a first sensor 140 and a second sensor 150. The first sensor 140 and the second sensor 150 are respectively mounted on the support plate 111 and / or the limiting block 115, and are both electrically connected to the controller, respectively used to detect whether a product is placed on the support plate 111 and whether the product is placed upside down. The types of the first sensor 140 and the second sensor 150 are not limited in this application.

[0048] In one specific embodiment, a first groove 1112 is recessed in the center of the support plate 111, and a second groove 1113 is recessed at the edge of the support plate 111, specifically located at a apex corner of the support plate 111. A first sensor 140 is housed in the first groove 1112 to detect whether a product is placed on the support plate 111, and a second sensor 150 is housed in the second groove 1113 to detect whether the product is placed upside down. By housing the first sensor 140 and the second sensor 150 in the grooves respectively, after the product is placed on the support plate 111, it is possible to avoid pressing on the first sensor 140 and the second sensor 150, thereby reducing the risk of damage to the first sensor 140 and the second sensor 150.

[0049] Understandably, the first sensor 140 and the second sensor 150 are not limited to being mounted on the carrier plate 111. It is feasible to mount them on the limit block 115 or other positions on the base 110, as long as the product placed on the carrier plate 111 can be detected.

[0050] The following is combined Figure 1 , Figure 3 , Figure 5 As shown, in one embodiment of this utility model, the flatness inspection device 100 further includes a display screen 160 and an alarm 170. The display screen 160 is mounted on the base 110 and the support plate 111 is set at a certain angle. The display screen 160 is electrically connected to the controller and is used to display the test data and results of the products, for example, displaying the test data of each product and whether it passes the comparison by the controller. The alarm 170 is mounted on the base 110 and electrically connected to the controller. The alarm 170 outputs an alarm signal when the test data of the product is either passable or failable. For example, one alarm signal is output when the flatness of the product passes the test, and another alarm signal is output when the flatness of the product fails the test.

[0051] Combination Figure 8 As shown, in one embodiment, the base 110 further includes an inclined plate 116, which is installed at the rear end of the base 110 and tilted backward, thus forming an angle with the support plate 111. A display screen 160 and an alarm 170 are respectively installed on the inclined plate 116, thereby facilitating the user's viewing of detection data and results.

[0052] In this invention, the alarm 170 can be at least one of a buzzer, an indicator light, and a vibrator. For example, a buzzer and an indicator light can be respectively installed on the inclined plate 116. When the product's test data is unqualified, the controller controls the buzzer to sound an alarm, and simultaneously controls the indicator light indicating the unqualified status to illuminate; conversely, when the product's test data is qualified, the controller controls the indicator light indicating the qualified status to illuminate. Understandably, the alarm 170 can also use other indicators.

[0053] The following is combined Figure 1 , Figure 3 , Figure 5 , Figure 8 As shown, in one embodiment of this utility model, the flatness inspection device 100 further includes a barcode scanner 180. The barcode scanner 180 is mounted on the base 110 via a bracket and protrudes above the support plate 111, and is used to scan the product to be inspected. The specific model of the barcode scanner 180 is not limited here.

[0054] The following is combined Figures 1-10 The detection principle and process of the flatness inspection device 100 of this utility model are explained as shown.

[0055] First, place the product under the scanner 180 and scan the process code on the product. After scanning, place the product on the carrier plate 111. At this time, the first sensor 140 and the second sensor 150 will detect the product to confirm that it is placed in place and not upside down.

[0056] After the product is placed on the support plate 111, it presses against the floating blocks 121 of the eight floating components 120, causing all eight floating blocks 121 to move downwards. During this process, the abutting portion 1221 of the floating block 121 compresses the elastic element 122, causing it to deform. Then, the displacement sensor 131 of each detection component 130 detects the height of each floating block 121 and sends the detected height to the controller. The controller acquires the detection data from all the displacement sensors 131 and compares the acquired detection data with preset data to determine whether the detection data is within the preset data range. If it is, the flatness of the product is qualified; otherwise, the flatness of the product is unqualified.

[0057] Next, the controller sends the detection data from each displacement sensor 131 to the display screen 160 for display, and also sends the detection result of whether the product's flatness is qualified to the display screen 160 for display. Additionally, when the product's test data is qualified, the controller controls the indicator light to illuminate. When the product's test data is unqualified, the controller controls the buzzer to sound an alarm, and simultaneously controls the indicator light to illuminate.

[0058] After the product inspection is completed and the product is removed, the top of the floating block 121 loses pressure. At this time, the elastic element 122 restores its deformation and pushes the abutment part 1221, thereby driving the floating block 121 to move upward and reset above the support plate 111. When the abutment part 1221 abuts against the blocking part 1122 on the mounting plate 112, the floating block 121 returns to its initial position to wait for the inspection of the next product.

[0059] In summary, the flatness inspection device 100 of this utility model has multiple floating components 120 arranged on a support plate 111. Each floating component 120 includes a floating block 121, which slides through the support plate 111 and protrudes from both ends of the support plate 111. A displacement sensor 131 is correspondingly arranged below the floating block 121. Thus, when a product is placed on the support plate 111, it is pressed against the floating blocks 121, causing the floating blocks 121 to move downwards. The height of the floating blocks 121 is then detected by the high-precision displacement sensor 131. The controller compares the detected height data of the floating blocks 121 with preset data to quickly determine whether the flatness of the product is qualified. This application uses point-based detection to provide feedback on the flatness of the product, which not only greatly improves the detection accuracy and efficiency but also avoids the influence of TP or glass on the product on the accuracy of the displacement sensor 131, further improving the detection accuracy.

[0060] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent changes made in accordance with the scope of the present utility model application are still within the scope of the present utility model.

Claims

1. A flatness inspection apparatus characterized by comprising: include: The base includes a support plate for supporting the product; Multiple floating components are installed at intervals on the support plate. Each floating component includes a floating block that slides through the support plate and has its two ends protruding from the support plate. Multiple detection components are respectively installed below each of the floating components. Each detection component includes a displacement sensor, which is positioned facing the floating block and is used to detect the height of the floating block. The controller is electrically connected to each of the displacement sensors and is used to acquire the detection data of each displacement sensor and determine whether the flatness of the product is qualified.

2. The flatness inspection apparatus of claim 1, wherein Each of the floating components further includes an elastic element connected to the floating block for maintaining the upper end of the floating block protruding above the support plate and for driving the floating block to move upward and reset above the support plate.

3. The flatness inspection apparatus of claim 2, wherein The floating block has a protruding abutment portion that intersects with its sliding direction. The elastic member abuts against the abutment portion, causing the upper end of the floating block to protrude above the support plate. When the elastic member drives the floating block to move upwards towards the support plate, the abutment portion abuts against the support plate to prevent the floating block from detaching.

4. The flatness inspection apparatus of claim 2, wherein Each of the floating components further includes a fixing block, which is fixed below the support plate. The floating block slides through the fixing block and its lower end protrudes below the fixing block. The elastic element abuts between the fixing block and the support plate.

5. The flatness inspection apparatus of claim 1, wherein Each of the aforementioned detection components further includes a mounting block, which is fixed within the base and located below the support plate, and the displacement sensor is fixed to the mounting block and faces the floating block.

6. The flatness inspection apparatus according to any one of claims 1 to 5, wherein The base also includes a limiting block, which is installed at the edge of the support plate and surrounds each of the floating blocks. The limiting block is used to limit the position of the product.

7. The flatness inspection apparatus according to any one of claims 1 to 5, wherein It also includes a first sensor and a second sensor, which are respectively mounted on the carrier plate and / or the base and are both electrically connected to the controller, and are used to detect whether a product is placed on the carrier plate and whether the product is placed upside down.

8. The flatness inspection apparatus of claim 7, wherein The bearing plate has a first groove recessed in the middle and a second groove recessed at the edge. The first sensor is housed in the first groove and the second sensor is housed in the second groove.

9. The flatness inspection apparatus according to any one of claims 1 to 5, wherein Also includes: A display screen is mounted on the base and angled to the support plate. The display screen is electrically connected to the controller and is used to display the product's test data and test results. An alarm, installed on the base and electrically connected to the controller, is used to alert the user regarding the detection results of the product.

10. The flatness inspection apparatus according to any one of claims 1 to 5, wherein It also includes a barcode scanner, which is mounted on the base and protrudes above the support plate, and is used to scan the product to be inspected.

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