A magnesium oxide coating flatness detection device

Abstract

The present application relates to a kind of magnesium oxide coating flatness detection device, including detection shell, support frame and limiting structure;The cavity is opened in the detection shell, and the cavity is used for the movement space of flatness detection;The support frame and limiting structure are in cavity, and the detection instrument is telescopically installed on the support frame.The magnesium oxide coating flatness detection device is contacted with the side of plate by cylinder, wedge ring groove, linkage frame and linkage rod first, and with the continuous effect of circular channel, tooth, magnetic attraction block, cross iron block and passive gear, arc arm is subsequently rotated, ensure that U frame when rotating, arc arm does not cause influence to surface detection;The magnesium oxide coating flatness detection device is in the central state after surface detection, can be more accurate detection by detection instrument, in this process, the pressure block is not contacted with plate, further improve the accuracy of detection effect drawing and improve detection resolution.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of flatness detection, and particularly relates to a magnesium oxide coating flatness detection device. BACKGROUND

[0002] With the rapid development of modern industrial manufacturing technology, magnesium oxide coating is widely applied to the fields of electronics, building, aerospace, etc. due to its excellent high-temperature resistance, corrosion resistance and insulation performance. However, the flatness of the magnesium oxide coating directly affects its performance and use effect, so accurate detection of the flatness of the coating becomes a key link in the production process.

[0003] At present, the plates coated with magnesium oxide coating are detected by artificial clamping and fixing. Since the plates have two sides, the artificial needs to constantly switch and then fix, which leads to complicated operation. Moreover, a large number of plates need to be detected, which seriously delays the working hours. In the detection process, the clamping block will affect the projection after detection. After that, the technical workers need to carry out the operation, and then the uneven position can be obtained. The magnesium oxide coating flatness detection of a plate occupies a lot of time, and the omission phenomenon occurs in the operation process. The overall detection accuracy cannot be improved.

[0004] Therefore, the magnesium oxide coating flatness detection device is provided. SUMMARY

[0005] This section aims to summarize some aspects of the embodiments of the application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, abstract and title. Such simplifications or omissions cannot be used to limit the scope of the application.

[0006] In view of the following technical problems in the prior art: at present, the plates coated with magnesium oxide coating are detected by artificial clamping and fixing. Since the plates have two sides, the artificial needs to constantly switch and then fix, which leads to complicated operation. Moreover, a large number of plates need to be detected, which seriously delays the working hours. In the detection process, the clamping block will affect the projection after detection. After that, the technical workers need to carry out the operation, and then the uneven position can be obtained. The magnesium oxide coating flatness detection of a plate occupies a lot of time, and the omission phenomenon occurs in the operation process. The overall detection accuracy cannot be improved.

[0007] To solve the above technical problems, the application provides the following technical scheme: a magnesium oxide coating flatness detection device, comprising a detection shell, a supporting frame and a limiting structure.

[0008] The detection housing has a cavity, which serves as the movement space for flatness detection.

[0009] The support frame and limiting structure are located in the cavity. A detector is telescopically mounted on the support frame. The detector's movement structure on the support frame is an X and Y axis movement mechanism. The moving detector is used to measure the distance of the magnesium oxide coating at various points on the plate. A support arm is installed in the cavity.

[0010] A support mechanism is mounted on one side of the support arm. The support mechanism includes a support housing, a slide rail, and a movable cavity. The support housing is mounted on one side of the support arm. The slide rail and the movable cavity are milled on the support housing. The movable cavity and the slide rail are connected.

[0011] One end of the support mechanism is movably connected to a limiting structure, which includes a U-frame, a pressing block, a telescopic cavity, and a circular channel. The U-frame is movably connected to one side of the support shell, and the circular channel and the telescopic cavity are opened in the U-frame and communicate with each other.

[0012] The inner edge surface of the U-frame has a convex groove, which communicates with the telescopic cavity. A linkage rod slides in the convex groove, and a pressing block is provided at the part of the linkage rod that extends out of the U-frame.

[0013] A cylinder is slidably connected in the slide rail. A wedge-shaped annular groove is milled at one end of the cylinder facing the limiting structure. The wedge-shaped annular groove contacts part B of the linkage frame. When the cylinder slides, it presses part A of the linkage frame through the wedge-shaped annular groove, and the linkage frame can perform telescopic movement.

[0014] As a preferred technical solution for a magnesium oxide coating flatness testing device, a sealing plate is provided outside the testing shell. The opening and closing of the sealing plate serves to block the flatness testing during the cavity process, preventing external factors from affecting the testing results. A display is also installed on the testing shell to display the effect diagram of the testing results, facilitating better analysis of the flatness of the magnesium oxide coating.

[0015] As a preferred technical solution for a magnesium oxide coating flatness testing device, the supporting shell is further milled with a circular cavity one, and a circular cavity two is formed along the inner edge of the circular cavity one. A cross groove is formed on the upper wall of the circular cavity two, and a cross iron block is telescopically installed in the cross groove. The top of the cross iron block is magnetic, and a thin spring is arranged between the two protruding parts of the cross iron block and the inner edge of the cross groove. When the cross iron block is not attracted, the thin spring performs a reset operation for the cross iron block.

[0016] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the limit disc is installed in the second circular cavity, the limit disc rotates in the second circular cavity, the outer contour of the limit disc is milled to limit the groove, the cross iron block is embeddedly connected with the limit groove, when the cross iron block is embedded in the limit groove, the rotation state of the limit disc can be limited, the position of the plate to be detected is not changed by arc arm, so that the accuracy of detection result is improved.

[0017] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the passive gear is arranged in the first circular cavity, the passive gear is connected with the limit disc, when the passive gear is driven to rotate by the guide part, the limit disc moves with the passive gear at this moment, the arc arm is installed on the side of the limit disc deviating from the passive gear, and the arc arm supports the bottom of the plate.

[0018] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the linkage frame is slidably arranged in the telescopic cavity, two slope edges A and B are formed in the linkage frame, the back of the U frame is fixedly connected with the driven gear, the driven gear is movably arranged in the movable cavity, the movable cavity is movably connected with the driving gear, the driving gear is engaged with the driven gear to drive, the input shaft of the driving gear is controlled by the separate driving motor in the support arm, the driving gear drives the driven gear to rotate, and the driven gear drives the U frame to turn over.

[0019] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the linkage rod is milled with an inclined surface at one end in the U frame, the inclined edge of the linkage rod is in contact with the B part of the linkage frame, the linkage frame can drive the linkage rod to extend, the reset spring can conveniently reset the pressing block, the protruding part of the linkage rod is the protruding part, and the reset spring is arranged between the protruding part and the convex groove.

[0020] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the end of the cylinder is the guide part, the bottom of the guide part is provided with teeth and magnetic attraction block, when the cylinder slides to lift the linkage frame, the guide part moves to the position of the passive gear, and the passive gear is driven to rotate with the continuous movement, when the teeth move to the position of the cross iron block, the cross iron block can be attracted, the magnetic attraction force of the magnetic attraction block is greater than the elastic force of the thin spring in this process, the cross iron block cancels the limit of the limit groove, then the guide part moves to the position of the passive gear, and the arc arm can be smoothly rotated.

[0021] As a kind of preferred technical scheme of magnesium oxide coating flatness detection device, the straight channel is reserved in the cylinder, and the helical groove is milled in the inner edge of the straight channel.

[0022] As a preferred technical scheme of the magnesium oxide coating flatness detection device, one side of the support arm is provided with a linkage column, the linkage column rotates on the support arm, the linkage column is in a straight channel, the surface of the linkage column is provided with a spiral protrusion, the spiral protrusion is in a spiral groove, and the linkage column is driven by another motor in the support arm. The cooperation of the spiral protrusion and the spiral groove can drive the cylinder to slide.

[0023] The beneficial effects of the present application are:

[0024] 1、The magnesium oxide coating flatness detection device cooperates the limiting disc, the cross iron block and the thin spring, ensures that the to-be-detected plate does not drive the arc arm to deflect during placement, effectively maintains the stability of the plate position, ensures that the plate is always in a horizontal state during detection, enhances the stability and consistency of detection, and significantly improves the accuracy of distance measurement of each point of the detector magnesium oxide coating;

[0025] 2、The magnesium oxide coating flatness detection device cooperates the cylinder, the wedge-shaped ring groove, the linkage frame and the linkage rod, so that the pressing block first touches the side edge of the plate, and then the arc arm rotates under the continuous action of the circular channel, the teeth, the magnetic attraction block, the cross iron block and the passive gear, so that the arc arm does not affect the surface detection when the U-shaped frame rotates;

[0026] 3、After surface detection, the plate is in a centered state, which can facilitate more accurate detection of the detector, and the pressing block does not touch the plate in this process, further improving the accuracy of the detection effect and improving the detection resolution.

[0027] Other features and advantages of the present application will be described in the following description, and some will become apparent from the description, or will be understood by those skilled in the art. The purpose and other advantages of the present application can be achieved and obtained by the structure specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor. Among them:

[0029] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0030] Figure 2 It is a schematic diagram of the overall structure of the present application. Figure 1 Partial cutaway schematic view.

[0031] Figure 3 Supporting mechanism and limiting structure of the present application.

[0032] Figure 4 Supporting shell of the present application.

[0033] Figure 5 Wedge-shaped ring groove and linkage frame of the present application.

[0034] Figure 6 Cylindrical section of the present application.

[0035] Figure 7 Arc arm of the present application.

[0036] Figure 8 Cross-shaped iron block of the present application. Figure 7 Another view.

[0037] Figure 9 Linkage rod of the present application.

[0038] Figure 10 Linkage frame of the present application.

[0039] Figure 11 Cross-shaped iron block of the present application.

[0040] Reference signs:

[0041] 100, detection shell; 101, cavity; 102, partition; 103, display; 200, support frame; 201, detector; 202, support arm; 300, supporting mechanism; 301, supporting shell; 302, slide; 303, movable cavity; 304, round cavity I; 305, round cavity II; 306, cross-shaped groove; 307, cross-shaped iron block; 308, thin spring; 309, limiting disc; 310, limiting groove; 311, driven gear; 312, arc arm; 400, limiting structure; 401, U-shaped frame; 402, pressure block; 403, telescopic cavity; 404, linkage frame; 405, driven gear; 406, driving gear; 407, convex groove; 408, linkage rod; 409, protruding part; 410, return spring; 411, round channel; 500, cylindrical; 500a, guide part; 500b, tooth; 500c, magnetic block; 501, wedge-shaped ring groove; 502, straight channel; 503, spiral groove; 600, linkage column; 601, spiral protrusion. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0043] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details set forth in this description. In other instances, well-known methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application.

[0044] Second, the "one embodiment" or "an embodiment" referred to herein as including a particular feature, structure, or characteristic under discussion can include, where applicable, every combination of features, structures, or characteristics and that specific embodiment, even if that combination is not recited specifically in the background or summary.

[0045] Third, the DETAILED DESCRIPTION section illustrates embodiments of the application with reference to the accompanying drawings, wherein like reference numerals indicate identical or functionally similar elements throughout the several views. The drawings described are intended to be illustrative, and not restrictive. Although the drawings represent embodiments of one or more applications, the drawings are not necessarily to scale. Furthermore, elements that have the same function or are similar in structure are designated with the same reference numerals for illustrative purposes.

[0046] Embodiments, with reference to Figure 1 and 2 A magnesium oxide coating flatness detection device, comprising a detection shell 100, a support frame 200 and a limiting structure 400;

[0047] A cavity 101 is formed on the detection shell 100, wherein the cavity 101 is used for the movement space of flatness detection; a sealing plate 102 is arranged outside the detection shell 100, wherein the opening and closing of the sealing plate 102 blocks the cavity 101 during flatness detection, avoiding external factors affecting the detection results; a display 103 is also installed on the detection shell 100, wherein the display 103 is used to display the effect picture of the detection results, which is convenient for better analyzing the flatness of the magnesium oxide coating.

[0048] With reference to Figure 2 The support frame 200 and the limiting structure 400 are in the cavity 101, and a detection instrument 201 is telescopically installed on the support frame 200, wherein the movement structure of the detection instrument 201 on the support frame 200 is an X, Y axis movement mechanism, and the moving detection instrument 201 is used to measure the distance of the magnesium oxide coating on each point on the plate; a support arm 202 is installed in the cavity 101.

[0049] With reference to Figure 3 , 4, 5, 6, 7, 8 and 11, one side of the support arm 202 is equipped with a support mechanism 300, the support mechanism 300 comprises a support shell 301, a slide 302 and a movable cavity 303, the support shell 301 is equipped on one side of the support arm 202, the slide 302 and the movable cavity 303 are milled on the support shell 301, and the movable cavity 303 and the slide 302 are communicated; a circular cavity one 304 is also milled on the support shell 301, a circular cavity two 305 is formed on the inner edge of the circular cavity one 304, a cross groove 306 is formed on the upper wall of the circular cavity two 305, and a cross iron block 307 is telescopically installed in the cross groove 306, wherein the top end of the cross iron block 307 is magnetic, and the two side protruding parts of the cross iron block 307 are provided with a thin spring 308 between the inner edge of the cross groove 306, wherein the thin spring 308 resets the cross iron block 307 when the cross iron block 307 is not attracted; a limiting disc 309 is installed in the circular cavity two 305, the limiting disc 309 rotates in the circular cavity two 305, a limiting groove 310 is milled on the outer contour of the limiting disc 309, the cross iron block 307 and the limiting groove 310 are embeddedly connected, and when the cross iron block 307 is embedded into the limiting groove 310, the rotation state of the limiting disc 309 can be limited, so that the position of the to-be-detected plate cannot be changed by the arc arm 312, thereby improving the accuracy of the detection result; a driven gear 311 is arranged in the circular cavity one 304, the driven gear 311 is connected with the limiting disc 309, when the driven gear 311 is driven to rotate by the guide part 500a, the limiting disc 309 moves together with the driven gear 311 at this moment, and an arc arm 312 is installed on the side of the limiting disc 309 deviating from the driven gear 311, wherein the arc arm 312 supports and levels the bottom of the plate.

[0050] With reference to Figure 3 , 4 , 5, 9 and 10, one end of the support mechanism 300 is movably connected with a limiting structure 400, the limiting structure 400 comprises a U frame 401, a pressing block 402, a telescopic cavity 403 and a circular channel 411, the U frame 401 is movably connected on one side of the support shell 301, the circular channel 411 and the telescopic cavity 403 are formed in the U frame 401, and the circular channel 411 and the telescopic cavity 403 are communicated; a linkage frame 404 is slidably arranged in the telescopic cavity 403, two slope edges A and B are formed on the linkage frame 404, a driven gear 405 is fixedly connected to the back of the U frame 401, the driven gear 405 moves in the movable cavity 303, a driving gear 406 is movably connected in the movable cavity 303, the driving gear 406 is in meshing transmission with the driven gear 405, the input shaft of the driving gear 406 is controlled by a separate driving motor in the support arm 202, the driving gear 406 drives the driven gear 405 to rotate, and the driven gear 405 drives the U frame 401 to flip;

[0051] The inner edge surface of the U-shaped frame 401 is reserved with a convex groove 407 which communicates with the telescopic cavity 403, and the convex groove 407 is slidably provided with a linkage rod 408, and the part of the linkage rod 408 extending out of the U-shaped frame 401 is provided with a pressing block 402; the end of the linkage rod 408 in the U-shaped frame 401 is milled with an inclined surface, the inclined edge of the linkage rod 408 is in contact with the B part of the linkage frame 404, the linkage frame 404 can drive the linkage rod 408 to extend out, and the reset spring 410 can conveniently reset the pressing block 402; the protruding part of the linkage rod 408 is a protruding part 409, and the reset spring 410 is arranged between the protruding part 409 and the inner edge of the convex groove 407.

[0052] With reference to Figure 5 , 6 , 8 and 11, the slide 302 is slidably connected with a cylinder 500, the end of the cylinder 500 towards the limiting structure 400 is milled with a wedge-shaped ring groove 501, the wedge-shaped ring groove 501 is in contact with the B part of the linkage frame 404, and when the cylinder 500 slides, the A part of the linkage frame 404 is pressed by the wedge-shaped ring groove 501, so that the linkage frame 404 can be telescoped; the end of the cylinder 500 is a guide part 500a, the bottom of the guide part 500a is provided with a tooth 500b and a magnetic block 500c, when the cylinder 500 slides to lift the linkage frame 404, the guide part 500a moves to the position of the driven gear 311, and with continuous movement, the driven gear 311 can be driven to rotate, when the tooth 500b moves to the position of the cross-shaped iron block 307, the cross-shaped iron block 307 can be attracted, and in this process, the magnetic attraction of the magnetic block 500c is greater than the elastic force of the thin spring 308, so that the cross-shaped iron block 307 cancels the limitation of the limiting groove 310, and then the guide part 500a moves to the position of the driven gear 311, which can smoothly drive the arc arm 312 to rotate; the cylinder 500 is reserved with a straight channel 502, and the inner edge of the straight channel 502 is milled with a spiral groove 503.

[0053] With reference to Figure 6 , the linkage column 600 is mounted on one side of the support arm 202, and the linkage column 600 rotates on the support arm 202, the linkage column 600 is in the straight channel 502, the surface of the linkage column 600 is provided with a spiral protrusion 601, the spiral protrusion 601 is in the spiral groove 503, and the linkage column 600 is driven by another motor in the support arm 202, and the cooperation of the spiral protrusion 601 and the spiral groove 503 can drive the cylinder 500 to slide.

[0054] By the present embodiment can be realized: the sealing plate 102 is opened, the need to detect the plate into the limiting structure 400, by four arc arm 312 support and leveling operation, this process fine spring 308 is the role of the cross iron block 307 in the limiting slot 310, can avoid the plate driven arc arm 312 deflection, thereby improving the accuracy of detection, by the detector 201 on the surface of the plate magnesium oxide coating ranging from this to carry on the flatness detection, and by the display 103 feedback, when the detection is completed, the control linkage column 600 for rotation, under the cooperation of the spiral convex 601 and spiral groove 503, so that the cylindrical 500 will along the slide 302 sliding movement, in this process, first, the wedge ring groove 501 will the A part of the linkage frame 404 continuous extrusion, so that the linkage frame 404, up and down telescopic movement, under the action of the B part of the linkage frame 404 and the inclined position of the linkage rod 408, so that the linkage rod 408 outward movement, at this moment, the surface of the paste block 402 exists a pair of opposite friction scale, guarantee U frame 401 before or after rotation, can be better between the friction effect of the plate, because the linkage frame 404 is U-shaped as a whole, can let more direction of the paste block 402 synchronous close to the plate, at this time the plate is limited, with the continuous rotation of the linkage column 600, the cylindrical 500 continues to move, because the depth of the circular channel 411 is greater than the edge line position of the telescopic cavity 403, at this moment, the cylindrical 500 and linkage frame 404 touch, with the continuous movement also will not drive effect to the linkage frame 404, and can avoid the paste block 402 back, guarantee the stability effect, when the surface of the cylindrical 500 and linkage frame 404 touch, the position of the magnetic block 500c moves to the corresponding position of the cross iron block 307, the cross iron block 307 is attracted, at this moment, the limiting disc 309 is not limited, followed by the gear 500b driven passive gear 311 rotation, at this moment, the arc arm 312 is driven to rotate, because the plate is defined by the paste block 402 at this moment, therefore, the arc arm 312 rotation is not affected, and stop control linkage column 600, then control the driving gear 406 to drive the driven gear 405 to rotate, U frame 401 with the driven gear 405 rotation, at this moment, the arc arm 312 is in the dislocation with U frame 401 without affecting, after the U frame 401 is turned over, the reverse control linkage column 600, at this time, the arc arm 312 moves to the position below the plate and supports, and the magnetic block 500c and the cross iron block 307 dislocation, at this moment, the state of the arc arm 312 is limited, then the paste block 402 away from the side of the plate, the plate can be in the center state, can better detect, and the paste block 402 does not touch the plate, the effect is better in detection, and the moving detector 201 is used to measure the distance of the magnesium oxide coating on each point on the plate.

[0055] It is to be understood that the detailed description and specific examples described above are intended for purposes of illustration only and are not intended to limit the scope of the technology claimed. Those skilled in the art will realize that the various modifications to the embodiments described above can be made that will be apparent to those skilled in the art, and it is intended to claim all such modifications as fall within the scope of the claims. Thus, the scope of the technology claimed should be determined by the appended claims and their legal equivalents rather than by the description of the embodiments above.

[0056] It should be noted that the above examples are merely used to illustrate the technical solutions of the present application, rather than limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the present application, and all such modifications and equivalents should be included in the scope of the claims of the present application.

Claims

1. A magnesium oxide coating flatness detection device, characterized by: The utility model provides a detection device for the detection of the detection device, including detection shell, support frame and limiting structure, The detection shell is provided with a cavity, The support frame and the limiting structure are in the cavity, the support frame is telescopically installed with a detector, One side of the support arm is equipped with a support mechanism, the support mechanism includes a support shell, a slide and a movable cavity, the support shell is assembled on one side of the support arm, the slide and the movable cavity are milled on the support shell, and the movable cavity and the slide are communicated; One end of the support mechanism is movably connected with a limiting structure, the limiting structure includes a U-shaped frame, a pressing block, an expansion cavity and a circular channel, the U-shaped frame is movably connected on one side of the support shell, the circular channel and the expansion cavity are formed in the U-shaped frame, and the circular channel and the expansion cavity are communicated; The inner surface of the U-shaped frame is reserved with a convex groove, the convex groove is communicated with the expansion cavity, a linkage rod is slidably arranged in the convex groove, and the pressing block is arranged on the part of the linkage rod extending out of the U-shaped frame; The expansion cavity is slidably provided with a linkage frame, and two slope edges are formed in the linkage frame, which are A part and B part respectively; The slide is slidably connected with a cylinder, the end of the cylinder towards the limiting structure is milled with a wedge-shaped ring groove, and the wedge-shaped ring groove is in contact with the B part of the linkage frame; The support shell is further milled with a circular cavity one, the inner surface of the circular cavity one is provided with a circular cavity two, the upper wall of the circular cavity two is provided with a cross groove, the cross groove is telescopically installed with a cross iron block, and the two protruding parts of the cross iron block are provided with a thin spring between the inner surface of the cross groove. The circular cavity two is provided with a limiting disc, the limiting disc rotates in the circular cavity two, the outer contour of the limiting disc is milled with a limiting groove, and the cross iron block is embeddedly connected with the limiting groove. The circular cavity one is provided with a driven gear, the driven gear is connected with the limiting disc, and the side of the limiting disc deviating from the driven gear is provided with an arc arm. The end of the cylinder is a guide part, and the bottom of the guide part is provided with teeth and a magnetic block.

2. The magnesium oxide coating flatness detection device of claim 1, wherein: The detection shell is provided with a partition plate, and the detection shell is further provided with a display.

3. The magnesium oxide coating flatness detection device of claim 1, wherein: The back of the U-shaped frame is fixedly connected with a driven gear, the driven gear moves in the movable cavity, the movable cavity is further movably connected with a driving gear, and the driving gear is meshed and transmitted with the driven gear.

4. The magnesium oxide coating flatness detection device of claim 1, wherein: The end of the linkage rod in the U-shaped frame is milled with an inclined surface, one side of the linkage rod is provided with a protruding part, and the protruding part is provided with a return spring between the inner surface of the convex groove.

5. The magnesium oxide coating flatness detection device of claim 1, wherein: The cylinder is provided with a straight channel, and the inner surface of the straight channel is milled with a spiral groove.

6. The magnesium oxide coating flatness detection device of claim 1, wherein: One side of the support arm is provided with a linkage column, the linkage column rotates on the support arm, the linkage column is in the straight channel, the surface of the linkage column is provided with a spiral protrusion, and the spiral protrusion is in the spiral groove.

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