An online detection device for color difference and glossiness of steel strip

Abstract

The present invention discloses an online detection device for color difference and glossiness of steel strip, comprising a frame, a linear module, an instrument group, and a calibration box, wherein: the frame comprises two archways, two crossbeams, and two supporting beams, the two archways are arranged opposite to each other, the two crossbeams and the two supporting beams are arranged horizontally between the two archways, and the two supporting beams are located between the two crossbeams; there are two linear modules, and the two linear modules are arranged horizontally on the two supporting beams respectively; there are two instrument groups, and the two instrument groups are connected to the slides of the two linear modules respectively, and the instrument group comprises a main machine and a gloss meter and a colorimeter arranged on the front and rear sides thereof respectively; the calibration box is arranged horizontally at one end of the frame through a bottom-mounted bracket, and it is located in the middle of the two instrument groups. After the device is applied to the steel strip color coating production line, the glossiness and color difference values ​​of the upper and lower surfaces of the steel strip can be detected online synchronously, and the detection data can be fed back in real time to adjust the color coating production process and ensure the performance of the product coating.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical industry equipment, and in particular to an online detection device for color difference and glossiness of a steel strip. Background Art

[0002] In the plate and strip continuous rolling color coating production line, it is usually necessary to test the quality of the strip surface coating before the product is formed to ensure the final qualified rate of the product. The conventional detection method is to set up a coating detection area at the exit section of the color coating production line, and judge the quality of the product coating by comparing the sample and the verification plate with the detection instrument after manual sampling, that is, off-line detection. However, there is a time difference in off-line detection, and the detection data cannot be fed back to the production line in time, and thus the production line cannot modify the production parameters and control the process flow according to the product detection results. Summary of the invention

[0003] The purpose of the present invention is to provide an online detection device for color difference and glossiness of strip steel in response to the existing technical status. After the device is applied to the strip steel color coating production line, the glossiness and color difference values ​​of the upper and lower surfaces of the strip steel can be detected online and synchronously, and the detection data can be fed back in real time to regulate the color coating production process and ensure the performance of the product coating.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] An online detection device for color difference and glossiness of a steel strip, comprising a frame, a linear module, an instrument group, and a calibration box;

[0006] The frame comprises two archways, two cross beams and two supporting beams, the two archways are arranged opposite to each other, the two cross beams and the two supporting beams are arranged horizontally between the two archways, and the two supporting beams are located between the two cross beams;

[0007] There are two groups of linear modules, and the two linear modules are horizontally arranged on two supporting beams respectively;

[0008] There are two instrument groups, and the two instrument groups are respectively connected to the slides of the two linear modules. The instrument group includes a main machine and a gloss meter and a colorimeter respectively arranged on the front and rear sides thereof;

[0009] The verification box is horizontally arranged at one end of the frame through a bottom-mounted bracket, and is located in the middle of the two instrument groups. A gloss meter verification plate is horizontally arranged at the front side of the verification box. The upper and lower surfaces of the gloss meter verification plate are both verification surfaces, and correspond to the positions of the gloss meters in the two instrument groups in the front-to-back direction. The top and bottom surfaces of the verification box are both provided with long strip openings distributed along the left-right direction, and the two openings respectively correspond to the positions of the colorimeter in the two instrument groups in the front-to-back direction. A colorimeter verification plate and a sample storage mechanism are arranged in parallel in the left-to-right direction in the verification box. The upper and lower surfaces of the colorimeter verification plate are both verification surfaces, and correspond to the positions of the openings arranged on the verification box in the front-to-back direction. The sample storage mechanism comprises a moving frame slidably arranged in the verification box along the front-to-back direction, X long strip sample storage modules are distributed in the moving frame along the front-to-back direction, and Y product samples are distributed in the sample storage module along the left-to-right direction, and X≥2, Y≥1, and the upper and lower surfaces of the product samples are both control surfaces.

[0010] Furthermore, a first movable dustproof protection mechanism is provided on the side of the archway close to the calibration box corresponding to the gloss meter calibration plate through a side-mounted bracket, the first movable dustproof protection mechanism includes a guide rod, a reset spring and a first dust cover arranged on the guide rod, one end of the guide rod is fixed to the side-mounted bracket through a mounting seat, and the other end is provided with a first limit piece, a guide groove is provided in the middle of the guide rod, the reset spring is passed through the guide rod, the first dust cover is a U-shaped structure, and a balancing block is provided on its front side, and a force-bearing plate is provided on its upper outer side and lower outer side, a through hole is provided on the balancing block that matches the guide rod, and a guide pin whose front end extends into the through hole is provided on the balancing block, the balancing block provided on the first dust cover is passed through the guide rod through the through hole, and the reset spring is located between the mounting seat and the balancing block and is always in a compressed state, the guide pin provided on the balancing block is inserted into the guide groove provided on the guide rod, and the gloss meter calibration plate provided on the front side of the calibration box is in the first dust cover.

[0011] Furthermore, the fixing seat includes a C-shaped rail and a pipe clamp assembled on the C-shaped rail, the guide rod is inserted into the pipe clamp of the fixing seat, and is axially locked by the second limiting member and the third limiting member.

[0012] Furthermore, a second movable dust protection mechanism is provided in the verification box, and the second movable dust protection mechanism includes a second dust cover slidably arranged along the front-to-back direction, and the width of the second dust cover is greater than the width of the opening set on the top surface of the verification box, and the length is greater than the length of the opening set on the top surface of the verification box.

[0013] Furthermore, the movable frame is slidably set in the verification box along the front and rear directions through slide rails. Two rod cylinders are also provided in the verification box. The driving ends of the two rod cylinders are connected to the movable frame, thereby driving the movable frame to automatically slide in the verification box. The two sides of the second dust cover are slidably set in the verification box through rodless cylinders.

[0014] Furthermore, the top surface of the calibration box and the first dust cover and the second dust cover are all made of transparent PC material, which is conducive to observing the gloss meter calibration plate, the colorimeter calibration plate and the product sample.

[0015] Furthermore, the top surface of the verification box includes a front fixed cover and a rear fixed cover assembled along the front-to-back direction, and the rear edge of the front fixed cover and the front edge of the rear fixed cover are respectively provided with U-shaped grooves. After the front fixed cover and the rear fixed cover are assembled, the U-shaped grooves of the two constitute the opening on the top cover of the verification box.

[0016] Furthermore, the gloss meter is arranged on the front side of the main machine through a lifting electric cylinder, so that the distance between the gloss meters in the two instrument groups is adjustable.

[0017] Furthermore, the colorimeter is arranged on the rear side of the main machine through an adjustment mechanism, the adjustment mechanism includes a lifting platform and a rotating table, the lifting platform is connected to the main machine, the rotating table is connected to the lifting platform, and the colorimeter is connected to the rotating table, so that the distance between the gloss meters in the two instrument groups and their respective inclination angles are adjustable.

[0018] Furthermore, anti-collision buffers are provided on the inner side surface of the arch at positions corresponding to the positions of the two instrument groups in the front-rear direction, so as to prevent damage to the instruments due to operating errors.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention can synchronously detect the glossiness and color difference of the upper and lower surfaces of the strip online, and provide real-time feedback of the detection data to adjust the color coating production process and ensure the performance of the product coating. At the same time, the product sample adopts a modular design and can be quickly switched according to demand;

[0021] 2. The present invention designs a first movable dust protection mechanism for the glossiness calibration plate, and designs a second movable dust protection mechanism for the color difference calibration plate and the color difference standard plate, so as to protect the smoothness of the glossiness calibration plate, the color difference calibration plate and the color difference standard plate, and avoid affecting the accuracy of calibration and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The structure diagram of the online detection device for color difference and glossiness of steel strip according to the present invention (front view);

[0023] Figure 2 It is a structural schematic diagram of the online detection device for color difference and glossiness of steel strip according to the present invention (side view, cross section);

[0024] Figure 3 It is a schematic diagram of the structure of the verification box of the present invention (top view, without top surface);

[0025] Figure 4 It is a structural schematic diagram of the mobile frame of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the verification box of the present invention (side view, cross section);

[0027] Figure 6 for Figure 5 A magnified schematic diagram of the middle area A;

[0028] Figure 7 It is a schematic structural diagram of the first movable dust protection device of the present invention;

[0029] Figure 8 It is a structural schematic diagram of the mounting seat of the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the first dust cover of the present invention (front view);

[0031] Fig.10 It is a structural schematic diagram of the first dust cover of the present invention (side view);

[0032] Fig.11 It is a structural schematic diagram of the guide rod of the present invention.

[0033] Notes:

[0034] 1. Archway, 1-1. Anti-collision buffer, 2. Crossbeam, 3. Support beam, 4. Linear module, 5. Instrument group, 5-1. Main machine, 5-2. Lifting electric cylinder, 5-3. Gloss meter, 5-4. Colorimeter, 5-5. Rotating table, 5-6. Lifting table, 6. Verification box, 6-1. Opening, 6-2. Glossiness verification plate, 6-3. Colorimeter verification plate, 6-4. Moving frame, 6-5. Slide rail, 6-6. Cylinder with rod, 6-7. Second dust cover, 6-8. Rodless cylinder , 6-9, sample storage module, 6-10, product sample, 6-11, rear fixed cover, 6-12, front fixed cover, 7, bottom bracket, 8, drag chain, 9, outer cover, 10, side bracket, 11, C-rail, 12, pipe clamp, 13, guide rod, 13-1, guide groove, 14, second limit piece, 15, third limit piece, 16, reset spring, 17, first dust cover, 18, force plate, 19, guide pin, 20, balance block, 20-1, through hole, 21, copper sleeve. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] Embodiment 1:

[0037] See also Figure 1-5 As shown, an online detection device for color difference and glossiness of a steel strip includes a frame, a linear module 4, an instrument group 5, and a calibration box 6.

[0038] The frame includes two archways 1 , two cross beams 2 and two supporting beams 3 . The two archways 1 are arranged opposite to each other. The two cross beams 2 and the two supporting beams 3 are horizontally arranged between the two archways 1 , and the two supporting beams 3 are located between the two cross beams 2 .

[0039] There are two groups of linear modules 4, and the two linear modules 4 are respectively arranged horizontally on the two support beams 3. The linear modules 4 include guide rails, slides and motors.

[0040] Necessarily, an outer cover 9 is provided between the upper cross beam 2 and the upper supporting beam 3 and between the lower cross beam 2 and the lower supporting beam 3, and the outer cover 9 plays the role of aesthetics, dust prevention, etc. For the convenience of installation and maintenance, the outer cover 9 is divided into several sections along the left and right directions.

[0041] In this embodiment, the outer cover 9 is divided into three sections.

[0042] It should be noted that Figure 1 In the figure, the outer cover 9 adopts the perspective drawing method commonly used in mechanical drawing.

[0043] The instrument group 5 is divided into two groups, and the two instrument groups 5 are respectively connected to the slides of the two linear modules 4, that is, the instrument group 5 can move in the left and right directions, that is, move horizontally. The instrument group 5 includes a main unit 5-1 and a gloss meter 5-3 and a colorimeter 5-4 respectively arranged on the front and rear sides thereof.

[0044] Among them: the gloss meter 5-3 is arranged on the front side of the main machine 5-1 through the lifting electric cylinder 5-2, that is, the gloss meter 5-3 can move in the up and down directions, so that the distance between the gloss meters 5-3 in the two instrument groups 5 is adjustable. The main reason is that the sensing distance of the gloss meter 5-3 is constant and has high precision, and it needs to be accurately positioned by the lifting electric cylinder 5-2 to fine-tune the vibration deviation generated by the device;

[0045] The colorimeter 5-4 is arranged on the rear side of the main unit 5-1 through an adjustment mechanism. The adjustment mechanism includes a lifting platform 5-6 and a rotating platform 5-5. The lifting platform 5-6 is connected to the main unit 5-1, the rotating platform 5-5 is connected to the lifting platform 5-6, and the colorimeter 5-4 is connected to the rotating platform 5-5. That is to say, the colorimeter 5-4 can move in the up and down directions and rotate, so that the distance between the colorimeter 5-4 in the two instrument groups 5 and their respective inclination angles are adjustable.

[0046] In order to limit the transverse position of the instrument group 5 along the linear module 4, each linear module 4 is provided with a left limit position sensor, a right limit position sensor and a zero position sensor.

[0047] The calibration box 6 is horizontally arranged at one end of the frame through a bottom mounting bracket 7 and is located in the middle of the two instrument groups 5 .

[0048] In this embodiment, the verification box 6 is horizontally arranged at one end of the lower crossbeam 2 in the frame through the bottom mounting bracket 7.

[0049] The specific structure of the verification box 6 is as follows:

[0050] A gloss meter calibration plate 6-2 is horizontally arranged at the front side of the calibration box 6, and both the upper and lower surfaces of the gloss meter calibration plate 6-2 are calibration surfaces, and the positions of the gloss meters 5-3 in the two instrument groups 5 in the front-to-back direction correspond to each other;

[0051] The top and bottom surfaces of the calibration box 6 are both provided with long strip openings 6-1 distributed along the left-right direction, and the two openings 6-1 correspond to the positions of the colorimeter 5-4 in the two instrument groups 5 in the front-back direction respectively;

[0052] A colorimeter calibration plate 6-3 and a sample storage mechanism are arranged in parallel along the left-right direction in the calibration box 6. The upper and lower surfaces of the colorimeter calibration plate 6-3 are both calibration surfaces, and the position of the colorimeter calibration plate 6-3 corresponds to the opening 6-1 provided on the calibration box 6 in the front-to-back direction. The sample storage mechanism includes a moving frame 6-4 slidably arranged in the calibration box 6 along the front-to-back direction. X long strip sample storage modules 6-9 are distributed along the front-to-back direction in the moving frame 6-4. Y product samples 6-10 are distributed along the left-to-right direction in the sample storage module 6-9, and X≥2, Y≥1. The upper and lower surfaces of the product sample 6-10 are both control surfaces.

[0053] In this embodiment, the moving frame 6-4 is slidably arranged in the verification box 6 along the front-rear direction through the slide rail 6-5. Two rod cylinders 6-6 are also provided in the verification box 6. The driving ends of the two rod cylinders 6-6 are connected to the moving frame 6-4, thereby driving the moving frame 6-4 to slide automatically in the verification box 6; X is 3, Y is 7, that is, there are a total of 21 product samples 6-10.

[0054] Preferably, anti-collision buffers 1-1 are provided on the inner side surface of the arch 1 at positions corresponding to the two instrument groups 5 in the front-rear direction, so as to prevent damage to the instruments due to operating errors by means of the anti-collision buffers 1-1.

[0055] In the above technical solution, the cables of the upper instrument group 5 are arranged and routed through the drag chain 8 between the upper crossbeam 2 and the upper supporting beam 3, and the cables of the lower instrument group 5 are arranged and routed through the drag chain 8 between the lower crossbeam 2 and the lower supporting beam 3. Devices such as the power box are all arranged on or in the archway 1, and an inspection port is reserved on the archway 1.

[0056] In specific implementation, the device is applied to the strip color coating production line. The front, back, left and right sides of the frame are the exit side, the entrance side, the operation side and the transmission side respectively. That is to say, the strip passes through the frame from back to front on the right side of the frame. The initial position of the instrument group 5 and the layout position of the verification box 6 are both located on the left side of the frame.

[0057] During the process of the strip running through the frame, the two instrument groups 5 move horizontally and perform the following steps:

[0058] First, align the gloss meter 5-3 with the gloss test plate 6-2 for initial calibration, and align the colorimeter 5-4 with the colorimeter 6-3 for initial calibration;

[0059] Then, the colorimeter 5-4 is aligned with the selected product sample 6-10 to identify the reference color;

[0060] Finally, the gloss meter 5-3 in the two instrument groups 5 respectively continuously collects the glossiness of the upper and lower surfaces of the strip and outputs feedback results (including multiple sets of data), and the colorimeter 5-4 in the two instrument groups 5 respectively continuously collects the color difference values ​​of the upper and lower surfaces of the strip and outputs feedback results (including multiple sets of data).

[0061] After the device has been running for a period of time and has been tested many times, if the readings of the instrument group 5 are deviated, the gloss meter 5-3 and / or the colorimeter 5-4 need to be calibrated again. At this time, the two instrument groups 5 are moved horizontally so that the gloss meter 5-3 is aligned with the gloss calibration plate 6-2 for calibration and / or the colorimeter 5-4 is aligned with the colorimeter 5-4 for calibration.

[0062] When a product sample 6-10 is selected according to production requirements, the movable frame 6-4 moves until the sample storage module 6-9 containing the required product sample 6-10 is directly opposite to the opening 6-1 in the front-to-back direction, and the two instrument groups 5 move horizontally so that the colorimeter 5-4 selects the reference color for the selected product sample 6-10.

[0063] Embodiment 2:

[0064] See also Figure 1 , 6 As shown in Figure 10, on the basis of Example 1, a first movable dust protection mechanism is provided on the side of the arch 1 close to the calibration box 6 corresponding to the gloss meter calibration plate 6-2 through a side-mounted bracket 10.

[0065] The first movable dust protection mechanism includes a guide rod 13 , a return spring 16 and a first dust cover 17 arranged on the guide rod 13 .

[0066] One end of the guide rod 13 is fixed on the side mounting bracket 10 through a mounting seat, and the other end is provided with a first limiter 22 . A guide groove 13 - 1 is provided in the middle of the guide rod 13 .

[0067] The return spring 16 is passed through the guide rod 13 .

[0068] The first dust cover 17 is a U-shaped structure, and a balance block 20 is provided on its front side, and force plates 18 are provided on its upper outer side and lower outer side. The balance block 20 is used to set the first dust cover 17 on the guide rod 13, and the force plate 18 is used to bear the impact of the gloss meter 5-3 on the first dust cover 17.

[0069] The balancing block 20 is provided with a through hole 20-1 adapted to the guide rod 13, and the balancing block 20 is also provided with a guide pin 19 whose front end extends into the through hole 20-1. The guide pin 19 is threadedly connected to the balancing block 20 to adjust the amount of extension.

[0070] In this embodiment, the guide pins 19 are divided into two groups, which are arranged on the upper and lower sides of the balance block 20.

[0071] The balancing block 20 provided on the first dust cover 17 is passed through the through hole 20 - 1 on the guide rod 13 , and the return spring 16 is located between the mounting seat and the balancing block 20 and is always in a compressed state, the guide pin 19 provided on the balancing block 20 is inserted into the guide groove 13 - 1 provided on the guide rod 13 , and the gloss meter calibration plate 6 - 2 provided on the front side of the calibration box 6 is in the first dust cover 17 .

[0072] Preferably, in order to reduce friction and facilitate the sliding of the balancing weight 20 on the guide rod 13 , a copper sleeve 21 is embedded in the through hole 20 - 1 provided on the balancing weight 20 .

[0073] Preferably, a plurality of reinforcing plates are provided between the load-bearing plate 18 and the first dust cover 17 to increase the structural strength of the load-bearing plate 18 .

[0074] The fixing seat comprises a C-shaped rail 11 and a pipe clamp 12 assembled on the C-shaped rail 11 . The guide rod 13 passes through the pipe clamp 12 of the fixing seat and is axially locked by a second limiting member 14 and a third limiting member 15 .

[0075] Preferably, there are two sets of fixing seats, so as to enhance the stability of the first movable dust protection mechanism on the side-mounted bracket 10.

[0076] According to the above technical solution, the height of the guide rod 13 can be adjusted by adjusting the position of the tube clamp 12 on the C-rail 11, so as to adapt to the position adjustment of the gloss meter calibration plate 6-2.

[0077] The first limiting member 22 and the second limiting member 14 are both double nuts threadedly connected to the guide rod 13. On the one hand, the double nuts have a limiting effect, and on the other hand, the double nuts have a retreat-stopping effect. In addition, the third limiting member 15 can be a single nut.

[0078] It is necessary to add gaskets when assembling double nuts or single nuts.

[0079] See also Figure 3-5 As shown, on the basis of Example 1, a second movable dust protection mechanism is provided in the verification box 6, and the second movable dust protection mechanism includes a second dust cover 6-7 slidably arranged along the front-to-back direction, and the width of the second dust cover 6-7 is greater than the width of the opening 6-1 set on the top surface of the verification box 6, and the length is greater than the length of the opening 6-1 set on the top surface of the verification box 6.

[0080] In this embodiment, both sides of the second dust cover 6-7 are slidably arranged in the calibration box 6 by the rodless cylinder 6-8. The purpose of using the rodless cylinder 6-8 is to optimize the space and simplify the structure on the basis of slidingly arranging the moving frame 6-4.

[0081] Specifically, the working process of the first dust cover 17 is as follows: when the gloss meter 5-3 in the instrument group 5 needs to be calibrated, the instrument group 5 moves to where the gloss meter 5-3 is facing the gloss verification plate 6-2, and the gloss meter 5-3 will hit the force plate 18 and move the first dust cover 17 away from the gloss verification plate 6-2. After the calibration is completed, the instrument group 5 moves to the right, and the return spring 16 pushes the first dust cover 17 to face the gloss verification plate 6-2 to protect the gloss verification plate 6-2 from dust.

[0082] Specifically, the working process of the second dust cover 6-7 is as follows: when the colorimeter 5-4 in the instrument group 5 needs to be calibrated or the reference color needs to be identified, the second dust cover 6-7 moves forward or backward to open the opening 6-1 on the top surface of the verification box 6. After the calibration or reference color identification is completed, the second dust cover 6-7 moves to cover the opening 6-1 on the top surface of the verification box 6.

[0083] It should be noted that the opening 6 - 1 provided on the bottom surface of the verification box 6 faces downward, so there is no need to design a dustproof structure.

[0084] In Example 1-2, the top surface of the calibration box 6 and the first dust cover 17 and the second dust cover 6-7 are all made of transparent PC material, which is convenient for observing the gloss meter calibration plate 6-2, the colorimeter calibration plate 6-3 and the product sample 6-10.

[0085] In the above technical solution, due to the transparent PC material, the top surface strength of the verification box 6 is limited. If it is bent downward, it will affect the movement of the second dust cover 6-7 and even the moving frame 6-4. For this reason, the following design is made:

[0086] The top surface of the verification box 6 includes a front fixed cover 6-12 and a rear fixed cover 6-11 which are assembled along the front-to-back direction. The rear edge of the front fixed cover 6-12 and the front edge of the rear fixed cover 6-11 are respectively provided with U-shaped grooves. After the front fixed cover 6-12 and the rear fixed cover 6-11 are assembled, the U-shaped grooves of the two constitute the opening 6-1 provided on the top surface of the verification box 6.

[0087] In general, the present invention can synchronously detect the gloss and color difference values ​​of the upper and lower surfaces of the strip online, and provide real-time feedback of the detection data to regulate the color coating production process and ensure the performance of the product coating. At the same time, the product sample 6-10 adopts a modular design and can be quickly switched according to needs; the present invention designs a first movable dustproof protection mechanism for the glossiness calibration plate 6-2, and designs a second movable dustproof protection mechanism for the color difference calibration plate 6-3 and the color difference standard plate (all product samples 6-10), thereby protecting the finish of the glossiness calibration plate 6-2, the color difference calibration plate 6-3 and the color difference standard plate, and avoiding affecting the accuracy of calibration and detection.

[0088] Of course, the above are only preferred embodiments of the present invention, and are not intended to limit the scope of use of the present invention. Therefore, any equivalent changes made to the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An online detection device for color difference and glossiness of steel strip, characterized by: Including rack, linear module, instrument set, calibration box; The frame comprises two archways, two cross beams and two supporting beams, the two archways are arranged opposite to each other, the two cross beams and the two supporting beams are arranged horizontally between the two archways, and the two supporting beams are located between the two cross beams; There are two groups of linear modules, and the two linear modules are horizontally arranged on two supporting beams respectively; There are two instrument groups, and the two instrument groups are respectively connected to the slides of the two linear modules. The instrument group includes a main machine and a gloss meter and a colorimeter respectively arranged on the front and rear sides thereof; The verification box is horizontally arranged at one end of the frame through a bottom-mounted bracket, and is located in the middle of the two instrument groups. A gloss meter verification plate is horizontally arranged at the front side of the verification box. The upper and lower surfaces of the gloss meter verification plate are both verification surfaces, and correspond to the positions of the gloss meters in the two instrument groups in the front-to-back direction. The top and bottom surfaces of the verification box are both provided with long strip openings distributed along the left-right direction, and the two openings respectively correspond to the positions of the colorimeter in the two instrument groups in the front-to-back direction. A colorimeter verification plate and a sample storage mechanism are arranged in parallel along the left-to-right direction in the verification box. The upper and lower surfaces of the colorimeter verification plate are both verification surfaces, and correspond to the positions of the openings arranged on the verification box in the front-to-back direction. The sample storage mechanism comprises a moving frame slidably arranged in the verification box along the front-to-back direction, X long strip sample storage modules are distributed in the moving frame along the front-to-back direction, and Y product samples are distributed in the sample storage module along the left-to-right direction, and X≥2, Y≥1, and the upper and lower surfaces of the product samples are both control surfaces; A first movable dustproof protection mechanism is provided on the side of the archway close to the calibration box corresponding to the gloss meter calibration plate through a side-mounted bracket. The first movable dustproof protection mechanism includes a guide rod, a reset spring and a first dust cover arranged on the guide rod. One end of the guide rod is fixed to the side-mounted bracket through a mounting seat, and the other end is provided with a first limit piece. A guide groove is provided in the middle of the guide rod. The reset spring is penetrated on the guide rod. The first dust cover is a U-shaped structure, and a balance block is provided on its front side, and a force-bearing plate is provided on its upper outer side and lower outer side. A through hole matching the guide rod is provided on the balance block, and a guide pin whose front end extends into the through hole is also provided on the balance block. The balance block arranged on the first dust cover is penetrated on the guide rod through the through hole, and the reset spring is located between the mounting seat and the balance block and is always in a compressed state. The guide pin arranged on the balance block is inserted into the guide groove arranged on the guide rod, and the gloss meter calibration plate arranged on the front side of the calibration box is in the first dust cover.

2. The on-line detection device for color difference and glossiness of steel strip according to claim 1, characterized in that: The mounting seat comprises a C-shaped rail and a pipe clamp assembled on the C-shaped rail. The guide rod is inserted into the pipe clamp of the mounting seat and is axially locked by a second limiting member and a third limiting member.

3. The on-line detection device for color difference and glossiness of steel strip according to claim 2, characterized in that: The verification box is provided with a second movable dust protection mechanism, which includes a second dust cover slidably arranged along the front-back direction, and the width of the second dust cover is greater than the width of the opening set on the top surface of the verification box, and the length of the second dust cover is greater than the length of the opening set on the top surface of the verification box.

4. The on-line detection device for color difference and glossiness of steel strip according to claim 3, characterized in that: The movable frame is slidably arranged in the verification box along the front-rear direction by means of slide rails. Two rod cylinders are also arranged in the verification box. The driving ends of the two rod cylinders are connected to the movable frame, thereby driving the movable frame to slide automatically in the verification box. Both sides of the second dust cover are slidably arranged in the verification box by means of rodless cylinders.

5. The on-line detection device for color difference and glossiness of steel strip according to claim 4, characterized in that: The top surface of the calibration box and the first dust cover and the second dust cover are all made of transparent PC material, which is conducive to observing the gloss meter calibration plate, the colorimeter calibration plate and the product sample.

6. The on-line detection device for color difference and glossiness of steel strip according to claim 5, characterized in that: The top surface of the verification box includes a front fixed cover and a rear fixed cover which are assembled along the front and rear directions. The rear edge of the front fixed cover and the front edge of the rear fixed cover are respectively provided with U-shaped grooves. After the front fixed cover and the rear fixed cover are assembled, the U-shaped grooves of the two constitute the opening on the top surface of the verification box.

7. The on-line detection device for color difference and glossiness of steel strip according to claim 1, characterized in that: The gloss meter is arranged at the front side of the main machine through a lifting electric cylinder, so that the distance between the gloss meters in the two instrument groups can be adjusted.

8. The on-line detection device for color difference and glossiness of steel strip according to claim 1, characterized in that: The colorimeter is arranged at the rear side of the main machine through an adjustment mechanism, the adjustment mechanism includes a lifting platform and a rotating platform, the lifting platform is connected to the main machine, the rotating platform is connected to the lifting platform, and the colorimeter is connected to the rotating platform, so that the distance between the gloss meters in the two instrument groups and their respective inclination angles are adjustable.

9. The on-line detection device for color difference and glossiness of steel strip according to any one of claims 1 to 8, characterized in that: Anti-collision buffers are provided on the inner side surface of the memorial arch at positions corresponding to the positions of the two instrument groups in the front-rear direction, so as to prevent the instrument groups from being damaged due to operating errors.

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