Measuring device for measuring and marking during rolling of aluminum plate by hot roughing mill

Abstract

The utility model discloses a measuring device for measuring and marking when an aluminum plate is rolled by a hot roughing mill, and relates to the technical field of intelligent manufacturing and industrial automation. According to the utility model, the problems of high labor intensity and low precision and efficiency of a plate production process due to the fact that a rolled plate is measured manually in an existing aluminum hot rolling process are solved. A robot tail end connecting flange is installed at the top end of a measuring base body, a width measuring module is installed at the bottom end of the measuring base body, a temperature measuring module is installed on the right side base wall of the measuring base body, a thickness measuring module is installed on the left side base wall of the measuring base body, and a linear module is vertically arranged on the left side base wall of the measuring base body. A vertically-arranged grating measuring assembly is arranged on one side of the linear module, a lower clamping arm is installed at the bottom of the grating measuring assembly, an upper clamping arm is arranged above the lower clamping arm, and the upper clamping arm is connected with a connecting block of the linear module. The device is used for marking the cutting head part in the plate frying process and measuring the thickness, the width and the temperature of the rolled plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to intelligent manufacturing and industrial automation technical field, concretely relates to a kind of measuring device for measuring and marking when being applied to hot rough rolling mill rolling aluminum plate. BACKGROUND

[0002] 3950 hot rough rolling mill is the main key production equipment of Northeast Light Alloy Co., Ltd., and the rolling process is also the leading process of plate mill. In the aluminum plate production process, the accurate measurement of plate thickness, width and temperature is the key to quality control. Since the completion of the construction of the equipment and its put into production, the aluminum hot rolling process has been in the condition of manual measurement of plate specifications and manual marking, and the use of thickness gauge has been tried for measurement. Due to the large difference in alloy composition of the plate, the measurement accuracy of the thickness gauge is unstable, and manual measurement of width and temperature is still needed, so the above problems caused by manual measurement have not been solved, which greatly affects the rolling process rhythm, and the rolling plate can only be measured manually, which cannot meet the requirements of modern production line for high precision and high efficiency. In addition, manual measurement and marking data need to be manually entered into the MES system, which not only increases the labor intensity, but also increases the risk of inconsistent data. Therefore, an automatic solution is needed to improve the accuracy and efficiency of the plate production process. SUMMARY

[0003] The utility model aims at solving the problems of large labor intensity, low accuracy and efficiency of plate production process in the existing aluminum hot rolling process by manual measurement of rolling plate, and provides a kind of measuring device for measuring and marking when being applied to hot rough rolling mill rolling aluminum plate.

[0004] The technical scheme of the utility model is:

[0005] A kind of measuring device for measuring and marking when being applied to hot rough rolling mill rolling aluminum plate, it includes robot end connection flange 1, measuring base body 2, thickness measurement module 3, width measurement module 4 and temperature measurement module 5, measuring base body 2 is cuboid cover structure, measuring base body 2 top end is equipped with robot end connection flange 1, measuring base body 2 bottom end is equipped with width measurement module 4, temperature measurement module 5 is installed on the right side base wall of measuring base body 2, thickness measurement module 3 is installed on the left side base wall of measuring base body 2, thickness measurement module 3 includes linear module 301, upper clamping arm 302, lower clamping arm 303 and grating measurement assembly, linear module 301 is vertically arranged on the left side base wall of measuring base body 2, linear module 301 side is equipped with vertically arranged grating measurement assembly, grating measurement assembly bottom is equipped with lower clamping arm 303, upper clamping arm 302 is equipped with above lower clamping arm 303, and upper clamping arm 302 is connected with the connecting block of linear module 301.

[0006] Further, the upper clamping arm 302 and the lower clamping arm 303 are arranged in sequence from top to bottom in the vertical direction, and the end lower surface of the upper measuring contact 304 and the end upper surface of the lower measuring contact 305 are both flat surfaces.

[0007] Further, the thickness measuring module 3 further comprises an upper measuring contact 304, a lower measuring contact 305, an upper contact fixing bolt and a lower contact fixing bolt, both the upper measuring contact 304 and the lower measuring contact 305 are cylindrical structures; the end lower surface of the upper clamping arm 302 is processed with an upper contact mounting hole, the top end of the upper measuring contact 304 is inserted into the upper contact mounting hole from bottom to top, the front end surface of the upper measuring contact 304 is processed with an upper through slot which is in communication with the upper contact mounting hole, and the side surface of the upper measuring contact 304 is processed with an upper contact fixing threaded hole which is perpendicular to the upper through slot in the horizontal direction, and the upper contact fixing bolt is threadedly connected in the upper contact fixing threaded hole; the end upper surface of the lower clamping arm 303 is processed with a lower contact mounting hole, the bottom end of the lower measuring contact 305 is inserted into the lower contact mounting hole from top to bottom, the front end surface of the lower measuring contact 305 is processed with a lower through slot which is in communication with the lower contact mounting hole, and the side surface of the lower measuring contact 305 is processed with a lower contact fixing threaded hole which is perpendicular to the lower through slot in the horizontal direction, and the lower contact fixing bolt is threadedly connected in the lower contact fixing threaded hole.

[0008] Further, the upper measuring contact 304 and the lower measuring contact 305 are coaxially arranged in sequence from top to bottom.

[0009] Further, the grating measuring assembly comprises a grating ruler 306, a grating fixed plate 307 and a grating cursor 308, the grating ruler 306 is vertically arranged on the side of the linear module 301, the front end surface of the grating fixed plate 307 is processed with a wire slot in the vertical direction, the grating ruler 306 is inserted into the wire slot of the grating fixed plate 307, the grating fixed plate 307 is installed on the left base wall of the measuring base body 2, the grating cursor 308 is arranged in front of the grating ruler 306, and the grating cursor 308 is installed on the upper clamping arm 302.

[0010] Further, the linear module 301 comprises a servo motor 3011, a motor base 3012, a ball screw pair 3013, an upper support 3014, a lower support 3015, a connecting block 3016, two linear sliding rails 3017 and four sliding blocks 3018, the ball screw pair 3013 is vertically arranged on the front side of the measuring base body 2, the shaft of the ball screw pair 3013 is rotatably installed on the upper support 3014 and the lower support 3015 through two bearings at the upper and lower ends respectively, the upper support 3014 and the lower support 3015 are both installed on the front side of the base wall of the measuring base body 2, the ball screw pair 3013 is provided with two linear sliding rails 3017 arranged vertically and symmetrically at the left and right sides respectively, each linear sliding rail 3017 is slidably installed with two sliding blocks 3018, the bottom end of the connecting block 3016 is connected with the four sliding blocks 3018 through a plurality of connecting pieces, and the load nut in the ball screw pair 3013 is connected with the connecting block 3016.

[0011] Further, the width measuring module 4 is a laser range finder, and the bottom base wall of the measuring base body 2 is processed with a detection port, and the top end of the laser range finder is inserted into the detection port from bottom to top.

[0012] Further, the temperature measuring module 5 comprises a cylinder 501, a cylinder mounting plate 502, a spring buffer assembly and a straight surface thermocouple 503, the cylinder 501 is vertically arranged on the side of the measuring base body 2, the cylinder 501 is installed on the cylinder mounting plate 502, the cylinder mounting plate 502 is installed on the right side of the base wall of the measuring base body 2, the piston rod end of the cylinder 501 is installed with the spring buffer assembly, and the bottom of the spring buffer assembly is installed with the straight surface thermocouple 503.

[0013] Further, the spring buffer assembly comprises a thermocouple connecting piece, a sleeve 504, a compression spring 505, a spring supporting pad 506 and a mandrel 507, the thermocouple connecting piece is installed at the end of the piston rod of the cylinder 501, the sleeve 504 is vertically installed on the thermocouple connecting piece, the mandrel 507 is slidably inserted into the center hole of the sleeve 504 from bottom to top at the top end, the spring supporting pad 506 is installed at the lower end of the mandrel 507, the compression spring 505 is sleeved on the lower part of the mandrel 507, the top end of the compression spring 505 is connected with the sleeve 504, the bottom end of the compression spring 505 is connected with the thermocouple connecting piece, and the bottom of the thermocouple connecting piece is installed with the straight surface thermocouple 503.

[0014] Further, the thermocouple connecting piece comprises a thermocouple bracket 508 and a temperature measuring pressing block 509, a semicylindrical groove arranged vertically is processed on the front end face of the thermocouple bracket 508, the temperature measuring pressing block 509 is arranged in front of the thermocouple bracket 508, a semicylindrical groove arranged vertically is processed on the rear end face of the temperature measuring pressing block 509, the thermocouple bracket 508 is detachably connected with the thermocouple bracket 508 through a plurality of connecting pieces, and the sleeve 504 is vertically inserted into the circular through hole formed after the assembly of the thermocouple bracket 508 and the temperature measuring pressing block 509.

[0015] The utility model discloses a measuring device for hot rough rolling mill, which is used for measuring and marking when rolling aluminum plate.

[0016] 1、The measuring device can realize head cutting part marking during plate explosion process, thickness, width and temperature measurement after plate rolling, effectively reduces manual input during rolling process, greatly improves rolling production rhythm speed, avoids uncertainty error caused by manual operation and potential safety hazard caused by operation process.

[0017] 2、The thickness measurement module is designed in the measuring device.

[0018] 3、The width measurement module is designed in the measuring device.

[0019] 4、The temperature measurement module is designed in the measuring device.

[0020] 5、The clamping type measuring mechanism, dynamic laser range finder and distributed temperature sensing module in the measuring device are strictly calibrated and debugged.

[0021] 6、The utility model realizes full automatic operation in front end measurement and marking process, replaces manual operation, reduces labor intensity and human error, improves production efficiency, reduces operation time of single plate through measurement and marking automatic process. DRAWINGS

[0022] Figure 1 It is a measuring device front view applied to hot rough rolling mill when rolling aluminum plate.

[0023] Figure 2 It is a measuring device left view applied to hot rough rolling mill when rolling aluminum plate.

[0024] Figure 3It is right view of the measuring device for measuring and marking when the hot rough rolling mill rolls aluminum plate;

[0025] Figure 4 It is plan view of the measuring device for measuring and marking when the hot rough rolling mill rolls aluminum plate;

[0026] Figure 5 It is bottom view of the measuring device for measuring and marking when the hot rough rolling mill rolls aluminum plate;

[0027] Figure 6 It is front view of temperature measuring module 5 in the measuring device for measuring and marking when the hot rough rolling mill rolls aluminum plate;

[0028] Figure 7 It is Figure 6 Sectional view at A-A;

[0029] Figure 8 It is side view of temperature measuring module 5 in the measuring device for measuring and marking when the hot rough rolling mill rolls aluminum plate.

[0030] In the figure: 1, robot end flange; 2, measurement base; 3, thickness measurement module; 301, linear module; 3011, servo motor; 3012, motor base; 3013, ball screw pair; 3014, upper support; 3015, lower support; 3016, connecting block; 3017, linear slide rail; 3018, sliding block; 302, upper clamping arm; 303, lower clamping arm; 304, upper measurement contact; 305, lower measurement contact; 306, grating ruler; 307, grating fixed plate; 308, grating cursor; 4, width measurement module; 5, temperature measurement module; 501, air cylinder; 502, air cylinder mounting plate; 503, straight surface thermocouple; 504, sleeve; 505, compression spring; 506, spring support pad; 507, mandrel; 508, thermocouple support; 509, temperature measurement block. DETAILED DESCRIPTION

[0031] Specific implementation one: combine Figures 1 to 8The embodiment is explained, and the measuring device for measuring and marking when the aluminum plate is rolled by the hot rough rolling mill comprises a robot end connecting flange 1, a measuring base body 2, a thickness measuring module 3, a width measuring module 4 and a temperature measuring module 5, the measuring base body 2 is a cuboid cover structure, the robot end connecting flange 1 is installed at the top end of the measuring base body 2, the width measuring module 4 is installed at the bottom end of the measuring base body 2, the temperature measuring module 5 is installed on the right base wall of the measuring base body 2, the thickness measuring module 3 is installed on the left base wall of the measuring base body 2, the thickness measuring module 3 comprises a linear module 301, an upper clamping arm 302, a lower clamping arm 303 and a grating measuring assembly, the linear module 301 is vertically arranged on the left base wall of the measuring base body 2, the linear module 301 is provided with the vertically arranged grating measuring assembly on one side, the lower clamping arm 303 is installed at the bottom of the grating measuring assembly, and the upper clamping arm 302 is arranged above the lower clamping arm 303 and connected with the connecting block of the linear module 301.

[0032] The measuring device disclosed by the utility model takes 6-axis ABB robot as an executing mechanism, takes Siemens 1200 programmable logic controller (PLC) as a control core, combines high-precision grating ruler, laser range finder, servo motor, large constant camera and other components, and realizes automatic operation of the measuring unit. The rolling speed of the rolling process is effectively improved, and the operation stability of the equipment is increased.

[0033] Specific implementation method two: in combination Figures 1 to 8 The embodiment is explained, and the upper clamping arm 302 and the lower clamping arm 303 of the embodiment are arranged in sequence in the vertical direction from top to bottom, and the end surface of the upper measuring contact 304 and the end surface of the lower measuring contact 305 are both planes. In this way, the thickness measuring module 3 is a double-layer mechanical measuring mechanism, adopts a mechanical clamping type measuring structure, realizes multi-point thickness measurement, eliminates single-point measurement errors caused by unstable thickness sensors due to uneven plate and high environmental temperature, and improves the comprehensiveness and accuracy of measurement. The other components and connection relationships are the same as those in the first specific embodiment.

[0034] Specific implementation method three: in combination Figures 1 to 8This embodiment describes a thickness measurement module 3 that further includes an upper measuring contact 304, a lower measuring contact 305, an upper contact fixing bolt, and a lower contact fixing bolt. Both the upper measuring contact 304 and the lower measuring contact 305 are cylindrical structures. An upper contact mounting hole is machined on the lower surface of the upper clamping arm 302. The top of the upper measuring contact 304 is inserted into the upper contact mounting hole from bottom to top. An upper through groove communicating with the upper contact mounting hole is machined on the front face of the upper measuring contact 304. A horizontal groove is machined on the side surface of the upper measuring contact 304. An upper contact fixing threaded hole perpendicularly communicating with the upper through slot is provided, and an upper contact fixing bolt is threadedly connected to the upper contact fixing threaded hole. A lower contact mounting hole is machined on the upper surface of the lower clamping arm 303. The bottom end of the lower measuring contact 305 is inserted into the lower contact mounting hole from top to bottom. A lower through slot communicating with the lower contact mounting hole is machined on the front face of the lower measuring contact 305. A lower contact fixing threaded hole perpendicularly communicating with the lower through slot is machined on the side of the lower measuring contact 305 along the horizontal direction, and a lower contact fixing bolt is threadedly connected to the lower contact fixing threaded hole. This configuration, using a cylindrical measuring contact, effectively improves the accuracy of thickness measurement. Other components and connections are the same as in specific embodiments one or two.

[0035] Specific implementation method four: Combination Figures 1 to 8 This embodiment describes an upper measuring contact 304 and a lower measuring contact 305 arranged coaxially. Other components and connections are the same as in specific embodiments one, two, or three.

[0036] Specific Implementation Method Five: Combining Figures 1 to 8 This embodiment describes an optical grating measurement assembly including an optical grating ruler 306, an optical grating fixing plate 307, and an optical grating vernier 308. The optical grating ruler 306 is vertically mounted on the side of the linear module 301. A groove is formed on the front surface of the optical grating fixing plate 307 along the vertical direction, and the optical grating ruler 306 is inserted into the groove. The optical grating fixing plate 307 is mounted on the left side wall of the measuring base 2. The optical grating vernier 308 is positioned directly in front of the optical grating ruler 306 and is mounted on the upper clamping arm 302. With this configuration, during thickness measurement, the connecting block of the linear module 301 drives the upper clamping arm 302 to move up and down. The upper clamping arm 302 is fixedly connected to the optical grating vernier 308, thereby achieving accurate thickness measurement through the movement of the optical grating vernier 308 in front of the optical grating ruler 306. Other components and connections are the same as in specific embodiments one, two, three, or four.

[0037] Specific Implementation Method Six: Combination Figures 1 to 8In this embodiment, the linear module 301 comprises a servo motor 3011, a motor base 3012, a ball screw pair 3013, an upper support 3014, a lower support 3015, a connecting block 3016, two linear sliding rails 3017, and four sliding blocks 3018. The ball screw pair 3013 is vertically arranged on the front side of the measurement base 2. The shaft of the ball screw pair 3013 is rotatably installed on the upper support 3014 and the lower support 3015 through two bearings at the upper and lower ends, respectively. The upper support 3014 and the lower support 3015 are both installed on the front side of the base wall of the measurement base 2. The ball screw pair 3013 is provided with two linear sliding rails 3017 arranged vertically and symmetrically on the left and right sides. Two sliding blocks 3018 are slidably installed on each linear sliding rail 3017. The connecting block 3016 is connected to the four sliding blocks 3018 through a plurality of connecting pieces. The load nut of the ball screw pair 3013 is connected to the connecting block 3016. The other components and connection relationships are the same as those in Embodiments 1, 2, 3, 4, or 5.

[0038] Embodiment Seven: Combination Figures 1 to 8 In this embodiment, the width measurement module 4 is a laser range finder. A detection port is processed on the bottom base wall of the measurement base 2. The laser range finder is inserted into the detection port from bottom to top. In this way, the width measurement module 4 is a dynamic laser range finder, which has a dynamic edge searching function and can adjust the measurement range and angle in real time during the measurement of the width of the plate, thereby adapting to plates with different widths and edge shapes. The other components and connection relationships are the same as those in Embodiments 1, 2, 3, 4, 5, or 6.

[0039] Embodiment Eight: Combination Figures 1 to 8 In this embodiment, the temperature measurement module 5 comprises a cylinder 501, a cylinder mounting plate 502, a spring buffer assembly, and a straight surface thermocouple 503. The cylinder 501 is vertically arranged on the side of the measurement base 2. The cylinder 501 is installed on the cylinder mounting plate 502. The cylinder mounting plate 502 is installed on the right side base wall of the measurement base 2. The piston rod end of the cylinder 501 is provided with a spring buffer assembly. The bottom of the spring buffer assembly is provided with a straight surface thermocouple 503. In this way, the temperature measurement module 5 is an embedded temperature sensing module. The contact type thermocouple is installed at the bottom of the measurement base 2, which can quickly and stably obtain the temperature of multiple measurement positions. The other components and connection relationships are the same as those in Embodiments 1, 2, 3, 4, 5, 6, or 7.

[0040] Embodiment Nine: Combination Figures 1 to 8This embodiment describes a spring buffer assembly comprising a thermocouple connector, a sleeve 504, a compression spring 505, a spring support 506, and a spindle 507. The thermocouple connector is mounted on the piston rod end of the cylinder 501. The sleeve 504 is vertically mounted on the thermocouple connector. The top end of the spindle 507 is slidably inserted into the center hole of the sleeve 504 from bottom to top. The spring support 506 is mounted on the lower end of the spindle 507. The compression spring 505 is sleeved on the lower part of the spindle 507. The top end of the compression spring 505 is connected to the sleeve 504, and the bottom end of the compression spring 505 is connected to the thermocouple connector. A straight-surface thermocouple 503 is mounted on the bottom of the thermocouple connector. With this configuration, since the aluminum plate has relatively low hardness, the spring buffer assembly between the piston rod end of the cylinder 501 and the straight-surface thermocouple 503 can buffer the impact force of the straight-surface thermocouple 503 on the surface of the aluminum plate, preventing damage to the aluminum plate during measurement. Other components and connections are the same as in specific implementation methods one, two, three, four, five, six, seven, or eight.

[0041] Specific Implementation Method Ten: Combining Figures 1 to 8 This embodiment describes a thermocouple connector comprising a thermocouple bracket 508 and a temperature-sensing pressure block 509. The front end face of the thermocouple bracket 508 has a vertically arranged semi-cylindrical groove. The temperature-sensing pressure block 509 is located directly in front of the thermocouple bracket 508, and its rear end face has a vertically arranged semi-cylindrical groove. The thermocouple bracket 508 is detachably connected to the thermocouple bracket 508 via multiple connectors. A sleeve 504 is vertically inserted into the circular through-hole formed after the thermocouple bracket 508 and the temperature-sensing pressure block 509 are assembled. Other components and connections are the same as in embodiments one, two, three, four, five, six, seven, eight, or nine.

[0042] Detailed Implementation Method Eleven: Combining Figures 1 to 8 This embodiment further includes a marking component 6, which is disposed on the rear side of the measuring substrate 2. The marking component 6 includes a marking machine bracket 601 and a marking head 602. The marking machine bracket 601 is mounted on the rear wall of the measuring substrate 2, and the marking head 602 is mounted on the marking machine bracket 601, with the marking head 602 arranged vertically downwards. Other components and connections are the same as in embodiments one, two, three, four, five, six, seven, eight, nine, or ten.

[0043] Working principle

[0044] Combination ​ This invention describes the working principle of a measuring device for measuring and marking aluminum plates during hot rolling mill rolling, as described in this utility model:

[0045] In the thickness measurement, the measuring device robot end flange 1 of the utility model connects with the robot execution end, and when the thickness measurement is started, the robot automatically moves to the both sides of the plate, and the servo motor 3011 drives the bearing nut in the ball screw pair 3013 and the connecting block 3016 installed thereon to drive the upper clamping arm 302 to move up and down, realizing the multi-point thickness measurement of the plate.

[0046] In the width measurement, the robot uses a dynamic laser range finder to find the edge, accurately positioning the left and right edges of the plate. The laser range finder adjusts the angle in real time during the measurement process to adapt to different edge shapes of the plate, improving the accuracy of the width data.

[0047] In the temperature measurement, the robot uses a thermocouple to measure the temperature data on the surface of the plate. This multi-point distributed temperature measurement method can effectively obtain the heat distribution of the plate and provide detailed temperature information for subsequent processes.

[0048] The above examples are only used to illustrate the technical solutions of the utility model, but not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for some technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A measuring device for measuring and marking when rolling aluminium sheets in a hot roughing mill, characterized in that: It includes robot end connecting flange (1), measurement base body (2), thickness measurement module (3), width measurement module (4) and temperature measurement module (5), the measurement base body (2) is cuboid cover structure, the measurement base body (2) top end is installed with robot end connecting flange (1), the measurement base body (2) bottom end is installed with width measurement module (4), the measurement base body (2) right side base wall is installed with temperature measurement module (5), the measurement base body (2) left side base wall is installed with thickness measurement module (3), thickness measurement module (3) includes linear module (301), upper clamping arm (302), lower clamping arm (303) and grating measurement assembly, linear module (301) is vertically arranged on the left side base wall of measurement base body (2), one side of linear module (301) is provided with vertically arranged grating measurement assembly, grating measurement assembly bottom is installed with lower clamping arm (303), lower clamping arm (303) is provided with upper clamping arm (302) above, and upper clamping arm (302) is connected with the connecting block of linear module (301).

2. The measuring device for measuring and marking when rolling aluminum plates in a hot rough rolling mill according to claim 1, characterized in that: Upper clamping arm (302) and lower clamping arm (303) are arranged in sequence in vertical direction from top to bottom, and the end surface of upper measuring contact (304) and the end surface of lower measuring contact (305) are both planes.

3. The measuring device for measuring and marking according to claim 2, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: Thickness measurement module (3) further includes upper measuring contact (304), lower measuring contact (305), upper contact fixing bolt and lower contact fixing bolt, and the upper measuring contact (304) and the lower measuring contact (305) are both cylindrical structures; the end surface of the upper clamping arm (302) is processed with an upper contact mounting hole, the upper measuring contact (304) is inserted into the upper contact mounting hole from bottom to top, the front end surface of the upper measuring contact (304) is processed with an upper through slot in communication with the upper contact mounting hole, the side surface of the upper measuring contact (304) is processed with an upper contact fixing threaded hole vertically penetrating the upper through slot in the horizontal direction, and the upper contact fixing threaded hole is screwed with the upper contact fixing bolt; the upper surface of the end of the lower clamping arm (303) is processed with a lower contact mounting hole, the bottom end of the lower measuring contact (305) is inserted into the lower contact mounting hole from top to bottom, the front end surface of the lower measuring contact (305) is processed with a lower through slot in communication with the lower contact mounting hole, the side surface of the lower measuring contact (305) is processed with a lower contact fixing threaded hole vertically penetrating the lower through slot in the horizontal direction, and the lower contact fixing threaded hole is screwed with the lower contact fixing bolt.

4. The measuring device for measuring and marking according to claim 3, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: The upper measuring contact (304) and the lower measuring contact (305) are coaxially arranged.

5. The measuring device for measuring and marking when rolling aluminum plates in a hot rough rolling mill according to claim 1 or 4, characterized in that: The grating measurement assembly includes a grating ruler (306), a grating fixed plate (307) and a grating cursor (308), the grating ruler (306) is vertically arranged on the side of the linear module (301), the front end surface of the grating fixed plate (307) is provided with a wire slot in the vertical direction, the grating ruler (306) is inserted into the wire slot of the grating fixed plate (307), the grating fixed plate (307) is installed on the left side base wall of the measurement base body (2), and the grating cursor (308) is installed on the upper clamping arm (302).

6. The measuring device for measuring and marking according to claim 5, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: The linear module (301) comprises a servo motor (3011), a motor base (3012), a ball screw pair (3013), an upper support (3014), a lower support (3015), a connecting block (3016), two linear slide rails (3017) and four sliding blocks (3018), the ball screw pair (3013) is vertically arranged on the front side of the measuring base body (2), the upper and lower ends of the screw rod in the ball screw pair (3013) are rotatably installed on the upper support (3014) and the lower support (3015) through two bearings respectively, the upper support (3014) and the lower support (3015) are both installed on the front side base wall of the measuring base body (2), the left and right sides of the ball screw pair (3013) are respectively provided with two linear slide rails (3017) arranged vertically in symmetry, two sliding blocks (3018) are slidably installed on each linear slide rail (3017), the bottom end of the connecting block (3016) is connected with the four sliding blocks (3018) through a plurality of connecting pieces, and the load nut in the ball screw pair (3013) is connected with the connecting block (3016).

7. The measuring device for measuring and marking when rolling aluminum plates in a hot rough rolling mill according to claim 1 or 6, characterized in that: The width measuring module (4) is a laser range finder, and the bottom base wall of the measuring base body (2) is processed with a detection port, and the top end of the laser range finder is inserted into the detection port from bottom to top.

8. The measuring device for measuring and marking according to claim 7, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: The temperature measuring module (5) comprises a cylinder (501), a cylinder mounting plate (502), a spring buffer assembly and a straight surface thermocouple (503), the cylinder (501) is vertically arranged on the side of the measuring base body (2), the cylinder (501) is installed on the cylinder mounting plate (502), the cylinder mounting plate (502) is installed on the right side base wall of the measuring base body (2), the piston rod end of the cylinder (501) is provided with the spring buffer assembly, and the bottom of the spring buffer assembly is provided with the straight surface thermocouple (503).

9. The measuring device for measuring and marking according to claim 8, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: The spring buffer assembly comprises a thermocouple connecting piece, a sleeve (504), a compression spring (505), a spring supporting pad (506) and a mandrel (507), the thermocouple connecting piece is installed on the piston rod end of the cylinder (501), the sleeve (504) is vertically installed on the thermocouple connecting piece, the mandrel (507) is slidably inserted into the center hole of the sleeve (504) from bottom to top, the spring supporting pad (506) is installed at the lower end of the mandrel (507), the compression spring (505) is sleeved on the lower part of the mandrel (507), the top end of the compression spring (505) is connected with the sleeve (504), the bottom end of the compression spring (505) is connected with the thermocouple connecting piece, and the bottom of the thermocouple connecting piece is provided with the straight surface thermocouple (503).

10. The measuring device for measuring and marking according to claim 9, applied to the hot rough rolling mill for rolling aluminum plate, characterized in that: The thermocouple connecting piece comprises a thermocouple support (508) and a temperature measuring pressing block (509), a semicylindrical groove arranged vertically is processed on the front end face of the thermocouple support (508), the temperature measuring pressing block (509) is arranged in front of the thermocouple support (508), a semicylindrical groove arranged vertically is processed on the rear end face of the temperature measuring pressing block (509), the thermocouple support (508) is detachably connected with the thermocouple support (508) through a plurality of connecting pieces, and the sleeve (504) is vertically inserted into the circular through hole formed after the thermocouple support (508) and the temperature measuring pressing block (509) are assembled.

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