WO2022037487A1

WO2022037487A1 - Plate flatness online detection device

Info

Publication number: WO2022037487A1
Application number: PCT/CN2021/112456
Authority: WO
Inventors: 张红伟; 梁涛; 孔德文; 赵旭; 李玲玉; 卢保强; 吕品
Original assignee: 泰安华鲁锻压机床有限公司
Priority date: 2020-08-21
Filing date: 2021-08-13
Publication date: 2022-02-24
Also published as: CN112161591B; CN112161591A

Abstract

A plate flatness online detection device, comprising a detection device (1) and a detection platform (2) disposed below the detection device (1). The detection device (1) comprises a frame (3); the frame (3) is provided with several laser rangefinders (4) in the lateral and longitudinal directions, separately; the detection platform (2) comprises a base (5); the upper part of the base (5) is provided with several recesses (6); rollers (7) are respectively correspondingly provided above the recesses (6); the rollers (7) are mounted on a lifting/lowering frame (8); several groups of centering push plates (9) are separately provided on both sides of the base (5). On-line detection can be performed on a plate leveled by a plate leveler, the detection mode is non-contact detection, and the detection result is more accurate; no additional hoisting operation is required in the detection process, the degree of automation is high, and the detection result can be automatically fed back to a leveler control system.

Description

A kind of plate flatness on-line detection device

(1) Technical field

The invention relates to a detection device, in particular to an on-line detection device for plate flatness.

(2) Background technology

After the sheet is leveled by the parallel roller sheet leveling machine, it is necessary to test the flatness of the entire sheet length and width of the sheet to evaluate the sheet leveling effect and determine whether the sheet leveling effect meets the requirements for use. Determine the next processing program. The traditional sheet metal leveling machine adopts offline manual inspection, that is, the sheet is placed flat on a special inspection platform, the flat ruler is placed on the sheet, and the feeler gauge is used to measure the gap between the flat ruler and the sheet to determine the leveling effect of the sheet. In this way, it is necessary to hoist and move the plate many times during the inspection, and the inspection process is complicated; and the inspection method is contact inspection, and the result is easily affected by the weight of the ruler.

(3) Contents of the invention

In order to make up for the deficiencies of the prior art, the present invention provides an on-line plate flatness detection device for non-contact detection, simple detection process, high degree of automation, and timely feedback of detection results.

The present invention is achieved through the following technical solutions:

An on-line detection device for plate flatness, comprising a detection device and a detection platform placed under the detection device, characterized in that: the detection device comprises a frame body, and the frame body is respectively arranged with a number of laser rangefinders in the lateral and longitudinal directions, and the detection The platform includes a base, the upper part of the base is provided with a number of grooves, the grooves are respectively provided with rollers, the rollers are installed on the lifting frame body, and the two sides of the base are respectively provided with several sets of centering push plates.

The laser range finder is installed on the seat plate, the seat plate is installed on the sliding block, the sliding block is installed on the linear guide rail, and the linear guide rail is installed on the frame body.

The four corners of the frame body are respectively installed on the detection lifts, the two groups of detection lifts parallel to the longitudinal direction of the frame body are respectively connected through the detection transmission shaft, and each group of detection lifts is respectively connected with the detection lift motor through the detection coupling.

The detection lift is installed on the fixed seat.

The four corners of the lifting frame body are respectively installed on the platform lifter, and the two groups of platform lifters parallel to the longitudinal direction of the lifting frame body are respectively connected through the platform drive shaft, and each group of platform lifters is respectively connected with the platform lifting motor through the platform coupling.

A limiting device for lifting the upper and lower limits of the frame body is installed on the base.

The centering push plate is driven by a centering lift, and the centering lift is connected with the centering motor through a centering coupling.

Both ends of the roller are mounted on bearing seats, and the bearing seats are mounted on the lifting frame body.

The rotations of the rollers are respectively driven by deceleration motors.

The platform lifting motor is installed on the installation platform of the base.

The beneficial effects of the invention are as follows: the on-line detection of the plate leveled by the plate leveler can be realized, the detection method is non-contact detection, and the detection result is more accurate; the detection process does not require additional lifting action, the degree of automation is high, and the detection The results can be automatically fed back to the leveler control system.

(4) Description of drawings

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

Accompanying drawing 1 is the front view structure schematic diagram of the present invention;

Accompanying drawing 2 is the side view structure schematic diagram of the present invention;

Accompanying drawing 3 is the top view structure schematic diagram of the present invention;

4 is a schematic diagram of the front view structure of the detection device of the present invention;

5 is a schematic side view of the structure of the detection device of the present invention;

6 is a schematic top view structure diagram of the detection device of the present invention;

7 is a schematic diagram of the installation structure of the laser rangefinder of the present invention;

8 is a schematic diagram of the front view structure of the detection platform of the present invention;

Accompanying drawing 9 is the side view structure schematic diagram of the detection platform of the present invention;

10 is a schematic top view structure diagram of the detection platform of the present invention;

In the figure, 1 detection device, 2 detection platform, 3 frame, 4 laser distance meter, 5 base, 6 groove, 7 roller, 8 lift frame, 9 centering push plate, 10 seat plate, 11 slider , 12 linear guide rails, 13 detection lifts, 14 detection drive shafts, 15 detection couplings, 16 detection lift motors, 17 fixed seats, 18 platform lifts, 19 platform drive shafts, 20 platform couplings, 21 platform lift motors, 22 Limiting device, 23 centering lifts, 24 centering couplings, 25 centering motors, 26 bearing seats, 27 gear motors, 28 mounting platforms.

(5) Specific implementation methods

The accompanying drawing is a specific embodiment of the present invention. This embodiment includes a detection device 1 and a detection platform 2 placed under the detection device 1 . The detection device 1 includes a frame body 3 . The frame body 3 is arranged with a plurality of laser rangefinders 4 in the horizontal and vertical directions respectively, and the detection platform 2 includes a base 5 . The upper part of the base 5 is provided with a number of grooves 6, and the top of the grooves 6 are respectively provided with rollers 7, the rollers 7 are installed on the lifting frame body 8, and several sets of centering push plates 9 are respectively provided on both sides of the base 5. The laser range finder 4 is installed on the seat plate 10 , the seat plate 10 is installed on the slider 11 , the slider 11 is installed on the linear guide rail 12 , and the linear guide rail 12 is installed on the frame body 3 . The four corners of the frame body 3 are respectively installed on the detection lifts 13 , and the two sets of detection lifts 13 parallel to the longitudinal direction of the frame body 3 are respectively connected by the detection transmission shaft 14 , and each set of detection lifts 13 is respectively connected through the detection coupling 15 and the detection lift motor 16 . connected. The detection lift 13 is mounted on the fixing base 17 . The four corners of the lifting frame body 8 are respectively installed on the platform lifter 18, and the two groups of platform lifters 18 parallel to the longitudinal direction of the lifting frame body 8 are respectively connected by the platform drive shaft 19, and each group of platform lifters 18 is respectively connected to the platform through the platform coupling 20. The motor 21 is connected. The base 5 is provided with a limiting device 22 for the vertical lifting limit of the lifting frame body 8 . The centering push plate 9 is driven by the centering lift 23 , and the centering lift 23 is connected with the centering motor 25 through the centering coupling 24 . Both ends of the roller 7 are mounted on the bearing seat 26 , and the bearing seat 26 is mounted on the lifting frame body 8 . The rotation of the rollers 7 is driven by the deceleration motors 27 respectively. The platform lifting motor 21 is mounted on the mounting platform 28 of the base 5 .

The on-line detection device for plate flatness of the present invention is adopted. The detection device 1 is a frame-type structure and is installed on the equipment foundation independently from the detection platform 2. Several laser rangefinders 4 are installed on the frame of the detection device 1. Above the detection platform 2 , by reasonably arranging the laser range finder 4 in the horizontal and vertical directions, the purpose of flatness detection of the plate on the detection platform 2 is realized from above the plate.

In order to facilitate the detection of the board, the height of the detection device 1 can be adjusted. There are four fixed bases 17, which are fixed on the foundation. Four detection lifts 13 are installed on the fixed base 17. Two of the detection lifts 13 are connected to the detection lift motor 16 through the detection coupling 15, and the detection lift motor 16 directly Drive, the detection lift motor 16 is fixed on the fixed seat 17; the other two detection lifts 13 are respectively connected with the first two detection lifts 13 through the detection transmission shaft 14, and follow the first two detection lifts 13 synchronously lift, and the top of the four detection lifts 13 Connected to the bottom surface of the frame body 3, the two detection lift motors 16 act synchronously to ensure that the four detection lifters 13 are raised and lowered synchronously, and the frame body 3 is controlled to rise and fall smoothly. The position of the laser rangefinder 4 on the detection device 1 can be adjusted horizontally. The frame body 3 is I-shaped, and the linear guide rails 12 are installed horizontally in the horizontal and vertical directions of the I-shaped frame body 3 . The seat plate 10, the laser distance meter 4 is installed on the seat plate 10, the laser distance meter 4 detects the distance from the board surface downward, and the laser distance meter 4 can follow the slider 11 to move horizontally in order to adjust to a suitable detection position; The plurality of laser rangefinders 4 are arranged in a T-shape to realize the flatness detection of the horizontal and vertical directions of the board, and the longitudinal direction refers to the direction in which the board moves.

The detection platform 2 is placed under the detection device 1, and can realize three functions of plate conveying, plate centering and providing a detection platform. By controlling the lifting and lowering of the roller 7 on the detection platform 2, the conversion between the plate conveying function and the detection platform function is realized. When conveying the plate, the height of the bus bar on the roller 7 is higher than the working surface of the detection platform 2. When the plate detection and alignment are required, the roller 7 is lowered into the groove 6 of the base 5, and the height of the bus bar on the roller 7 is lower than the detection platform. 2 working surfaces. The base 5 is fixed on the foundation, and the upper surface of the base 5 is a machining plane, so as to ensure that the upper surface of the base 5 can meet the flatness and roughness requirements of the detection plane application. The upper part of the base 5 is designed with grooves 6. The number of the grooves 6 is the same as the number of the rollers 7 according to the plate conveying requirements. The grooves 6 are used to provide space for the rollers 7 to rise and fall. There are four platform elevators 18 in total, which are installed on the installation platform 28 at the lower part of the base 5. Two platform elevators 18 are connected to the platform elevator motor 21 through the platform coupling 20, and are directly driven by the platform elevator motor 21, and the platform elevator motor 21 is fixed. to the installation platform 28; the other two platform elevators 18 are respectively connected with the first two platform elevators 18 through the platform drive shaft 19, and follow the first two platform elevators 18 to lift synchronously, and the top of the four platform elevators 18 are connected to the bottom surface of the lifting frame body 8 , The two platform lift motors 21 act synchronously to ensure that the platform lifts 18 rise and fall synchronously, and control the lift frame body 8 to rise and fall smoothly. The roller 7 is installed on the lifting frame body 8 through the bearing seat 26, and follows the lifting frame body 8 to rise and fall. The roller 7 can rotate around its own axis. , the torque of the roller rotation is provided by the deceleration motor 27 . The limit device 22 is composed of two proximity switches and a proximity switch sensing plate, and is used to sense the upper and lower limit positions of the lifting frame body 8 . The centering lifts 23 are horizontally installed on the vertical plates on both sides of the upper part of the base 5 , and each centering lift 23 is driven by a separate centering motor 25 . The centering push plate 9 is connected to the head screw rod of the centering lift 23, and is used to push the plate to move to a suitable detection position.

The present invention is arranged on the discharge side of the sheet metal forming equipment. In the initial state, the height of the bus bar on the roller 7 is the same as that of the bus bar on the conveying roller table. The horizontal position of the instrument 4 is adjusted to the appropriate detection position; 2. The sheet is output from the discharge port of the sheet metal forming equipment, and is transported to the detection platform 2 through the conveying roller table. The roller 7 of the inspection platform 2 rotates synchronously with the roller of the conveying roller table. , transport the sheet to a suitable detection position; 3. The roller 7 on the detection platform 2 stops rotating, the platform lifting motor 21 on the detection platform 2 operates, and the roller 7 falls below the upper surface of the base 5; 4. Centering The elevator 23 moves to push the plate to a suitable detection position; 5. The elevator 13 moves to adjust the detection height of the detection device 1; 6. The laser distance meter 4 works to detect the horizontal and vertical flatness of the plate; 7. According to the detection 8. According to the testing requirements, the roller 7 is raised, moves the plate to change its position, and then falls down for secondary detection; 9. After the detection operation is over, The test results are fed back to the numerical control system; 10. The roller 7 is raised to the conveying height. According to the test results, the numerical control system determines that the plate is qualified for inspection, and then the plate is conveyed to the next process. If the plate is unqualified, the plate is conveyed to the previous process. , perform a second correction.

Claims

An on-line detection device for plate flatness, comprising a detection device (1) and a detection platform (2) placed below the detection device (1), characterized in that the detection device (1) comprises a frame body (3), the frame The body (3) is respectively arranged with a plurality of laser rangefinders (4) in the lateral and longitudinal directions, the detection platform (2) includes a base (5), and a plurality of grooves (6) are formed on the upper part of the base (5), and the grooves (6) There are corresponding rollers (7) on the top, the rollers (7) are installed on the lifting frame body (8), and several sets of centering push plates (9) are respectively provided on both sides of the base (5); the frame body (3) The four corners are respectively installed on the detection lifts (13), the two sets of detection lifts (13) parallel to the longitudinal direction of the frame body (3) are respectively connected through the detection transmission shaft (14), and each set of detection lifts (13) is respectively connected through the detection coupling The device (15) is connected with the detection lift motor (16); the four corners of the lift frame body (8) are respectively mounted on the platform lifter (18), and the two groups of platform lifters (18) parallel to the longitudinal direction of the lift frame body (8) are respectively Connected by the platform drive shaft (19), each group of platform lifters (18) is respectively connected with the platform lift motor (21) through the platform coupling (20); the centering push plate (9) is driven by the centering lift (23) , the centering elevator (23) is connected with the centering motor (25) through the centering coupling (24); by controlling the lifting and lowering of the roller (7) on the detection platform (2), the plate conveying function and the detection platform are realized. Function conversion; when conveying the plate, the height of the busbar on the roller (7) is higher than the working surface of the detection platform (2). 6), the height of the busbar on the roller (7) is lower than the working surface of the detection platform (2);

The detection process is as follows: 1. Adjust the horizontal position of the laser range finder (4) to a suitable detection position according to the detection requirements of this batch of plates; 2. The plates are output from the discharge port of the plate forming equipment and transported to the Before the detection platform (2), the roller (7) of the detection platform (2) rotates synchronously with the conveying roller table roller to transport the sheet material to a suitable detection position; 3. The roller (7) on the detection platform (2) ) to stop the rotation, check the movement of the platform lifting motor (21) on the platform (2), and the roller (7) drops below the upper surface of the base (5); 4. The centering lift (23) acts to push the plate to a suitable 5. Detect the movement of the elevator (13), and adjust the detection height of the detection device (1); 6. The laser range finder (4) works to detect the horizontal and vertical flatness of the plate; 7. According to the testing requirements, if any The middle elevator (23) needs to be actuated to push the plate to change the position for secondary inspection; 8. According to the inspection requirements, the roller (7) is raised, moves the plate to change the position and then falls down for the second inspection; 9. After the inspection is completed, The test results are fed back to the numerical control system; 10. The roller (7) is raised to the conveying height. According to the test results, the numerical control system determines that the plate is qualified for inspection, and then the plate is conveyed to the next process. If the plate is unqualified, the plate is conveyed to the front One process, secondary correction.
The on-line detection device for plate flatness according to claim 1, wherein the laser range finder (4) is mounted on the seat plate (10), and the seat plate (10) is mounted on the slider (11), The slider (11) is mounted on the linear guide rail (12), and the linear guide rail (12) is mounted on the frame body (3).
The on-line detection device for plate flatness according to claim 1, wherein the detection elevator (13) is installed on the fixed seat (17).
The on-line detection device for plate flatness according to claim 1, characterized in that: a limiting device (22) for lifting the upper and lower limits of the frame body (8) is installed on the base (5).
The on-line detection device for plate flatness according to claim 1, wherein both ends of the roller (7) are mounted on the bearing seat (26), and the bearing seat (26) is mounted on the lifting frame body (8). .
The on-line detection device for plate flatness according to claim 1, characterized in that the rotation of the rollers (7) is driven by a deceleration motor (27) respectively.
The on-line detection device for plate flatness according to claim 1, wherein the platform lift motor (21) is installed on the installation platform (28) of the base (5).