Plate thickness online measuring device

Abstract

The utility model relates to the technical field of plate thickness automatic measurement, in particular to a plate thickness on-line measuring device, which comprises a base and a thickness measuring mechanism, the thickness measuring mechanism is connected with the base, the thickness measuring mechanism comprises a first thickness measuring instrument and a second thickness measuring instrument, and the first thickness measuring instrument is connected with the second thickness measuring instrument. The first thickness measuring instrument and the second thickness measuring instrument are installed at the two ends of the thickness measuring mechanism respectively, and the detection end of the first thickness measuring instrument and the detection end of the second thickness measuring instrument are located on the same vertical line or horizontal line. And a space for accommodating a plate is formed between the detection end of the first thickness measuring instrument and the detection end of the second thickness measuring instrument. According to the utility model, real-time measurement of the thickness of the plate can be effectively realized on line.

Description

Technical Field

[0001] This utility model relates to the technical field of automated measurement of plate thickness, and more specifically, to an online plate thickness measurement device. Background Technology

[0002] Sheet metal, as a crucial basic material, is widely used in construction, machinery manufacturing, transportation, and other fields. Sheet thickness, as a key quality indicator, directly affects product strength, processing accuracy, and performance. Traditional thickness measurement mainly relies on manual sampling using contact measuring tools such as calipers and micrometers, which has significant limitations: First, manual measurement is inefficient and cannot meet the real-time monitoring needs of continuous high-speed operations in modern production lines; second, sampling inspection is prone to missed quality checks, especially in edge areas or areas with localized thickness fluctuations, making comprehensive coverage difficult; third, human operation easily introduces reading errors and cannot achieve automatic recording and traceability of measurement data. Although non-contact measuring devices based on lasers and ultrasound have emerged in recent years, problems remain, including high equipment costs, poor environmental adaptability, and insufficient measurement accuracy for sheets with complex surface treatments. Especially in high-temperature and dusty industrial environments, the stability and reliability of existing automated equipment still need improvement. The industry is committed to developing automated sheet metal thickness measurement equipment that combines high precision, high efficiency, and strong environmental adaptability to achieve end-to-end quality control and reduce the risk of quality loss.

[0003] Existing technology discloses a rapid multi-point measurement system and method for acrylic sheet thickness. The measuring device designed in this technical solution requires the sheet to be placed and fixed on a workbench for measurement. However, in factory production, there is a need for real-time monitoring of sheet thickness to promptly detect and shut down the machine to address any thickness discrepancies when changes occur. The existing measurement method requires removing the sheet for measurement, but the sheet on the production line experiences slight shaking when fed into the measuring device. Furthermore, since the production line requires measurement before feeding, the sheet cannot be fixed on the workbench. Therefore, the existing technology cannot meet the need for continuous real-time measurement of sheet thickness changes on the production line. Utility Model Content

[0004] The purpose of this invention is to overcome the limitations of existing sheet metal thickness measuring devices, which cannot continuously measure the thickness changes of sheet metal in real time on the production line, and to provide an online sheet metal thickness measuring device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A plate thickness online measuring device is provided, including a base and a thickness measuring mechanism. The thickness measuring mechanism is connected to the base and includes a first thickness measuring instrument and a second thickness measuring instrument. The first thickness measuring instrument and the second thickness measuring instrument are respectively installed at both ends of the thickness measuring mechanism. The detection end of the first thickness measuring instrument and the detection end of the second thickness measuring instrument are located on the same vertical or horizontal line, and a space for accommodating the plate is formed between the detection ends of the first thickness measuring instrument and the second thickness measuring instrument.

[0007] In the operation of the above scheme, two sets of thickness measuring mechanisms are set up, one on each side of the production line pushing the sheet material. Both the first and second thickness measuring instruments are laser rangefinders. The engineer measures a fixed distance between the two measuring instruments on the base and then begins the measurement. The sheet material pushing system of the production line pushes the sheet material into the measuring device. The sheet material enters the measuring space between the first and second thickness measuring instruments. The first and second thickness measuring instruments simultaneously emit lasers at the same point in the vertical or horizontal direction of the sheet material on both sides and receive the reflected lasers. Thus, the first and second measuring instruments can respectively measure the straight-line distance to that point on the sheet material. According to the calculation, the fixed distance minus the distance measured by the two measuring instruments gives the thickness of that point on the sheet material. Throughout the testing process, the laser reacts quickly and can continuously measure various points of the sheet material moving on the production line. Even if the sheet material on the line shakes slightly when it is fed into the measuring device, it does not affect the accuracy of the measurement, and can effectively achieve real-time measurement of the sheet material thickness online.

[0008] Furthermore, the thickness measuring mechanism also includes a frame, which includes a connecting arm, a first mounting arm, and a second mounting arm. The two ends of the connecting arm are fixedly connected to the first mounting arm and the second mounting arm, respectively. The first mounting arm is located at the end of the connecting arm closer to the base, and the second mounting arm is located at the end of the connecting arm away from the base. The first thickness measuring instrument is mounted on the first mounting arm, and the second thickness measuring instrument is mounted on the second mounting arm. The frame of the thickness measuring mechanism is U-shaped, and the first thickness measuring instrument and the second thickness measuring instrument are respectively installed at the ends of the first mounting arm and the second mounting arm. The plate is placed in the U-shaped space between the first mounting arm and the second mounting arm during measurement.

[0009] Furthermore, it also includes a linear drive mechanism, which is mounted on the base and drives the thickness measuring mechanism to move along a first direction. The linear drive mechanism can drive the thickness measuring mechanism to slide, enabling the thickness measuring mechanism to measure the thickness of different positions on the board along a direction perpendicular to the feeding motion of the board. The two mutually perpendicular motion directions move simultaneously, turning one-dimensional measurement into two-dimensional measurement, measuring the change in planar thickness of a certain area of ​​the board, and obtaining the flatness of the board. The first direction is the direction in which the thickness measuring mechanism moves towards the center of the board.

[0010] Furthermore, the linear drive mechanism includes a cylinder, the fixed end of which is fixedly connected to the base, and the movable end of which is fixedly connected to the first mounting arm; the driving form of the linear drive mechanism is a piston cylinder drive mechanism, or it can be a slide module.

[0011] Furthermore, a slider is provided on the first mounting arm, and the linear drive mechanism also includes a guide rail, which is mounted on the base, and the slider is slidably connected to the guide rail; the cooperation between the slider and the guide rail can reduce the shaking of the thickness measuring mechanism during linear movement and avoid fluctuations in non-linear movement.

[0012] Furthermore, the side of the guide rail is also provided with electromagnetic limit blocks; several electromagnetic limit blocks can be provided on the side of the guide rail, set at different lengths of the guide rail. When energized, the electromagnet is attracted, the block retracts and disengages from the path of the slider. When de-energized, the spring pushes the block to pop out and insert into the guide rail path of the slider to block the slider. The setting of the electromagnetic limit blocks can block the thickness measuring device at the test position according to the actual test needs.

[0013] Furthermore, the connecting arm also includes a first rotating seat, a second rotating seat, a lead screw, and a sliding guide rod. One end of the first rotating seat is fixedly connected to the first mounting arm, and the other end is rotatably connected to one end of the lead screw. The other end of the lead screw is threadedly connected to one end of the second rotating seat, and the other end of the second rotating seat is fixedly connected to the second mounting arm. Both ends of the sliding guide rod are fixedly connected to the first mounting arm and the second mounting arm, respectively. The sliding guide rod is a sliding connection between the guide rod and the sleeve. The guide rod is fixedly connected to the first mounting arm, and the sleeve is fixedly connected to the second mounting arm. The guide rod is inserted into the sleeve to achieve a sliding connection. The sliding guide rod can prevent the second mounting arm from rotating with the lead screw when the lead screw rotates, thus avoiding transmission failure. The telescopic design of the connecting arm can precisely control the height of the space formed between the detection ends of the first thickness measuring instrument and the second thickness measuring instrument to accommodate the plate, so as to adapt to plates of different thicknesses.

[0014] Furthermore, reinforcing ribs are provided at the connection points between the connecting arm and the first mounting arm and the second mounting arm; the first mounting arm and the second mounting arm are relatively long and have low rigidity, which may cause slight bending. The reinforcing ribs can effectively improve rigidity and reduce bending.

[0015] Furthermore, it also includes an alarm device installed on the connecting arm, which is electrically connected to the first thickness measuring instrument and the second thickness measuring instrument; the alarm device is used to alert the engineer when the thickness measurement is unqualified, so as to stop production in time and check the location of the problem.

[0016] Furthermore, it also includes a heat dissipation and cooling device. Both the first thickness measuring instrument and the second thickness measuring instrument are equipped with a heat dissipation and cooling device. Both the first thickness measuring instrument and the second thickness measuring instrument are laser ranging systems. The generation, emission and reception of lasers will cause the equipment to generate a lot of heat. If the equipment overheats, it will be damaged. Therefore, a heat dissipation and cooling device is set up to cool it down.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The first thickness measuring instrument and the second thickness measuring instrument are respectively installed at both ends of the thickness measuring mechanism. The sheet material is fed into the space between the two measuring instruments. The measuring instruments can continuously measure various points of the sheet material moving on the production line. Even if the sheet material on the line shakes slightly when it is fed into the measuring device, it will not affect the accuracy of the measurement. It can effectively realize real-time measurement of the sheet material thickness on the line.

[0019] 2. The linear drive mechanism is mounted on the base, and the thickness measuring mechanism can measure the thickness of the plate at different locations, transforming the one-dimensional measurement method into a two-dimensional measurement method. While the plate moves forward and is fed, the measuring instrument moves in a direction perpendicular to the plate's movement to measure the change in planar thickness of a specific area of ​​the plate. Attached Figure Description

[0020] Figure 1 A schematic diagram of a plate thickness online measurement device;

[0021] Figure 2 This is a schematic diagram of the structure of a thickness measuring mechanism of a plate thickness online measuring device after it moves along a first direction;

[0022] Figure 3 This is a schematic diagram of a retractable connecting arm for the frame.

[0023] In the attached diagram: 100, base; 200, thickness measuring mechanism; 210, first thickness measuring instrument; 220, second thickness measuring instrument; 230, frame; 231, connecting arm; 2311, first rotating seat; 2312, lead screw; 2313, second rotating seat; 2314, sliding guide rod; 232, first mounting arm; 233, second mounting arm; 234, slider; 235, reinforcing rib; 300, linear drive mechanism; 310, cylinder; 320, guide rail; 330, electromagnetic limit stop; 400, alarm device; 500, heat dissipation and cooling device. Detailed Implementation

[0024] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only, representing schematic diagrams rather than actual physical objects, and should not be construed as limiting the scope of this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0025] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0026] Example 1

[0027] This embodiment is a first embodiment of a plate thickness online measurement device, such as... Figure 1 As shown, the device includes a base 100 and a thickness measuring mechanism 200. The thickness measuring mechanism 200 is connected to the base 100. The thickness measuring mechanism 200 includes a first thickness measuring instrument 210 and a second thickness measuring instrument 220. The first thickness measuring instrument 210 and the second thickness measuring instrument 220 are respectively installed at both ends of the thickness measuring mechanism 200. The detection end of the first thickness measuring instrument 210 and the detection end of the second thickness measuring instrument 220 are located on the same vertical or horizontal line. A space for accommodating the plate is formed between the detection end of the first thickness measuring instrument 210 and the detection end of the second thickness measuring instrument 220.

[0028] Specifically, the thickness measuring mechanism 200 also includes a frame 230, which includes a connecting arm 231, a first mounting arm 232, and a second mounting arm 233. The two ends of the connecting arm 231 are fixedly connected to the first mounting arm 232 and the second mounting arm 233, respectively. The first mounting arm 232 is located at the end of the connecting arm 231 closer to the base 100, and the second mounting arm 233 is located at the end of the connecting arm 231 away from the base 100. The first thickness measuring instrument 210 is mounted on the first mounting arm 232, and the second thickness measuring instrument 220 is mounted on the second mounting arm 233. The frame 230 of the thickness measuring mechanism 200 is U-shaped. The first thickness measuring instrument 210 and the second thickness measuring instrument 220 are respectively set at the ends of the first mounting arm 232 and the second mounting arm 233. The plate is placed in the U-shaped space between the first mounting arm 232 and the second mounting arm 233 during measurement.

[0029] Specifically, a reinforcing rib 235 is provided at the connection between the connecting arm 231 and the first mounting arm 232 and the second mounting arm 233. The first mounting arm 232 and the second mounting arm 233 are relatively long and have low rigidity, which may cause slight bending. The reinforcing rib 235 can effectively improve rigidity and reduce bending.

[0030] Specifically, it also includes an alarm device 400 installed on the connecting arm 231. The alarm device 400 is electrically connected to the first thickness measuring instrument 210 and the second thickness measuring instrument 220. The alarm device 400 is used to alert the engineer when the thickness measurement is unqualified, so as to stop production in time and check the location of the problem.

[0031] Specifically, it also includes a heat dissipation and cooling device 500. Both the first thickness measuring instrument 210 and the second thickness measuring instrument 220 are equipped with heat dissipation and cooling devices 500. Both the first thickness measuring instrument 210 and the second thickness measuring instrument 220 are laser ranging systems. The generation, emission and reception of lasers will cause the equipment to generate a lot of heat. If the equipment is overheated, it will be damaged. Therefore, the heat dissipation and cooling device 500 is set to cool it down.

[0032] The working principle of the online plate thickness measurement device in this embodiment is as follows:

[0033] A thickness measuring device is placed on each side of the sheet material being pushed along the production line. A fixed distance is set between the first thickness measuring instrument 210 and the second thickness measuring instrument 220. The sheet material pushing system of the production line pushes the sheet material into the thickness measuring mechanism 200. The sheet material enters the measuring space between the first thickness measuring instrument 210 and the second thickness measuring instrument 220. The first thickness measuring instrument 210 and the second thickness measuring instrument 220 simultaneously emit lasers and receive reflected lasers at the same point in the vertical or horizontal direction of the sheet material on both sides. Thus, the first measuring instrument and the second measuring instrument can respectively measure the straight-line distance to that point on the sheet material. After calculation by a connected computer, the thickness of that point on the sheet material is obtained by subtracting the distance measured by the two measuring instruments from the fixed distance. The sheet material is continuously fed forward, and the first thickness measuring instrument 210 and the second thickness measuring instrument 220 continuously measure the thickness of various points along a straight line. A heat dissipation and cooling device 500 is used to cool the measuring instruments to ensure that the measuring instruments can work continuously and stably. When the thickness does not meet the standard, the alarm device 400 alarms to prompt the engineer to check.

[0034] The beneficial effects of this embodiment are: the first thickness measuring instrument 210 and the second thickness measuring instrument 220 can continuously measure each point on a straight line of the sheet material moving on the production line. Even if the sheet material on the line shakes slightly when it is fed into the measuring device, it will not affect the accuracy of the measurement. It can effectively realize real-time measurement of the sheet material thickness on the line.

[0035] Example 2

[0036] This embodiment is a second embodiment of a plate thickness online measurement device, such as... Figures 1 to 2 As shown, the difference from Embodiment 1 is that it also includes a linear drive mechanism 300, which is mounted on the base 100. The linear drive mechanism 300 drives the thickness measuring mechanism 200 to move along the first direction. The linear drive mechanism 300 can drive the thickness measuring mechanism 200 to slide, so that the thickness measuring mechanism 200 can measure the thickness of different positions of the board along the feeding direction perpendicular to the board. The two mutually perpendicular movement directions move simultaneously, so that the one-dimensional measurement becomes a two-dimensional measurement, measuring the change in planar thickness of a certain area of ​​the board and obtaining the flatness of the board. The first direction is the direction in which the thickness measuring mechanism 200 moves towards the center of the board.

[0037] Specifically, the linear drive mechanism 300 includes a cylinder 310, the fixed end of which is fixedly connected to the base 100, and the movable end of which is fixedly connected to the first mounting arm 232; the drive form of the linear drive mechanism 300 is a piston cylinder 310 drive mechanism, or it can be a slide module.

[0038] Specifically, a slider 234 is provided on the first mounting arm 232, and the linear drive mechanism 300 also includes a guide rail 320, which is mounted on the base 100. The slider 234 is slidably connected to the guide rail 320. The cooperation between the slider 234 and the guide rail 320 can reduce the shaking of the thickness measuring mechanism 200 during linear movement and avoid fluctuations in non-linear movement.

[0039] The working principle of the online plate thickness measurement device in this embodiment is as follows:

[0040] As the sheet metal moves forward on the production line, the cylinder 310 of the linear drive mechanism 300 can drive the frame 230 of the thickness measuring mechanism 200 to move along the first direction and then along the opposite direction. By moving back and forth in the two directions, the first thickness measuring instrument 210 and the second thickness measuring instrument 220 can measure the thickness change of the sheet metal plane. After computer processing, the flatness of the sheet metal can also be obtained.

[0041] The beneficial effects of this embodiment are: with the linear drive mechanism 300, the thickness measuring mechanism 200 can measure the thickness at more points on the plate, thus upgrading the one-dimensional measurement system to a two-dimensional measurement system.

[0042] Example 3

[0043] This embodiment is a third embodiment of a plate thickness online measurement device, such as... Figures 2 to 3 As shown, the difference from Embodiment 2 is that an electromagnetic limit block 330 is also provided on the side of the guide rail 320. Several electromagnetic limit blocks 330 can be provided on the side of the guide rail 320, and are set at different lengths of the guide rail 320. When energized, the electromagnet is attracted, the block retracts and disengages from the path of the slider 234. When de-energized, the spring pushes the block to pop out and insert into the path of the slider 234 on the guide rail 320 to block the slider 234. The setting of the electromagnetic limit block 330 can block the thickness measuring device at the test position according to the actual test needs.

[0044] Specifically, the connecting arm 231 also includes a first rotating seat 2311, a second rotating seat 2313, a lead screw 2312, and a sliding guide rod 2314. One end of the first rotating seat 2311 is fixedly connected to the first mounting arm 232, and the other end is rotatably connected to one end of the lead screw 2312. The other end of the lead screw 2312 is threadedly connected to one end of the second rotating seat 2313, and the other end of the second rotating seat 2313 is fixedly connected to the second mounting arm 233. Both ends of the sliding guide rod 2314 are fixedly connected to the first mounting arm 232 and the second mounting arm 233, respectively. The sliding guide rod 231... Form 4 is a sliding connection between the guide rod and the sleeve. The guide rod is fixedly connected to the first mounting arm 232, and the sleeve is fixedly connected to the second mounting arm 233. The guide rod is inserted into the sleeve to achieve a sliding connection. The setting of the sliding guide rod 2314 can prevent the second mounting arm 233 from rotating with the lead screw 2312 when the lead screw 2312 rotates, which would cause transmission failure. The telescopic design of the connecting arm 231 can accurately control the height of the space formed between the detection end of the first thickness measuring instrument 210 and the detection end of the second thickness measuring instrument 220 to accommodate the plate, so as to adapt to plates of different thicknesses.

[0045] The working principle of the online plate thickness measurement device in this embodiment is as follows:

[0046] The lead screw rotates within the first rotating seat 2311, and the threaded transmission drives the second rotating seat 2313 to rise or fall. Simultaneously, under the guidance of the sliding guide rod 2314, the second mounting arm 233 will rise or fall with the second rotating seat 2313 to adjust the height of the connecting arm 231 to meet the needs of different actual situations. At the same time, the electromagnetic limit block 330 can limit the slider 234, so that the frame 230 can only move within the limit range of the electromagnetic limit block 330, thereby adjusting the measurement range of the first thickness measuring instrument 210 and the second thickness measuring instrument 220 to meet the needs of different actual situations.

[0047] The beneficial effects of this embodiment are: through the telescopic design of the connecting arm 231 and the setting of the electromagnetic limit block 330, the thickness measuring mechanism 200 can be flexibly adapted to various actual situations, thereby improving the flexibility of the equipment.

[0048] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0049] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A plate thickness online measuring device, characterized in that, The device includes a base (100) and a thickness measuring mechanism (200), the thickness measuring mechanism (200) being connected to the base (100). The thickness measuring mechanism (200) includes a first thickness measuring instrument (210) and a second thickness measuring instrument (220), the first thickness measuring instrument (210) and the second thickness measuring instrument (220) being respectively installed at both ends of the thickness measuring mechanism (200). The detection end of the first thickness measuring instrument (210) and the detection end of the second thickness measuring instrument (220) are located on the same vertical or horizontal line, and a space for accommodating the plate is formed between the detection end of the first thickness measuring instrument (210) and the detection end of the second thickness measuring instrument (220). The thickness measuring mechanism (200) further includes a frame (230), which includes a connecting arm (231), a first mounting arm (232), and a second mounting arm (233). The two ends of the connecting arm (231) are fixedly connected to the first mounting arm (232) and the second mounting arm (233), respectively. The first mounting arm (232) is located at the end of the connecting arm (231) closer to the base (100), and the second mounting arm (233) is located at the end of the connecting arm (231) away from the base (100). The first thickness measuring instrument (210) is mounted on the first mounting arm (232), and the second thickness measuring instrument (220) is mounted on the second mounting arm (233). The connecting arm (231) further includes a first rotating seat (2311), a second rotating seat (2313), a lead screw (2312), and a sliding guide rod (2314). One end of the first rotating seat (2311) is fixedly connected to the first mounting arm (232), and the other end is rotatably connected to one end of the lead screw (2312). The other end of the lead screw (2312) is threadedly connected to one end of the second rotating seat (2313). The other end of the second rotating seat (2313) is fixedly connected to the second mounting arm (233). Both ends of the sliding guide rod (2314) are fixedly connected to the first mounting arm (232) and the second mounting arm (233), respectively.

2. The online plate thickness measuring device according to claim 1, characterized in that, It also includes a linear drive mechanism (300) mounted on the base (100), which drives the thickness measuring mechanism (200) to move along a first direction.

3. The online plate thickness measuring device according to claim 2, characterized in that, The linear drive mechanism (300) includes a cylinder (310), the fixed end of which is fixedly connected to the base (100), and the movable end of which is fixedly connected to the first mounting arm (232).

4. The online plate thickness measuring device according to claim 3, characterized in that, The first mounting arm (232) is provided with a slider (234), and the linear drive mechanism (300) further includes a guide rail (320), which is mounted on the base (100), and the slider (234) is slidably connected to the guide rail (320).

5. The online plate thickness measuring device according to claim 4, characterized in that, The side of the guide rail (320) is also provided with an electromagnetic limit stop (330).

6. The online plate thickness measuring device according to claim 2, characterized in that, The connecting arm (231) is further provided with a reinforcing rib (235) at the connection between it and the first mounting arm (232) and the second mounting arm (233).

7. The online plate thickness measuring device according to claim 1, characterized in that, It also includes an alarm device (400) installed on the connecting arm (231), the alarm device (400) being electrically connected to the first thickness measuring instrument (210) and the second thickness measuring instrument (220).

8. The online plate thickness measuring device according to claim 1, characterized in that, It also includes a heat dissipation and cooling device (500), which is installed on both the first thickness measuring instrument (210) and the second thickness measuring instrument (220).

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