Non-contact steel coil width and position deviation measuring device

Abstract

The utility model relates to a non-contact steel coil width and position deviation measuring device, which comprises a PLC (Programmable Logic Controller) and a base, a movable sliding mechanism is arranged on the base; the moving sliding mechanism comprises a sliding rail and a sliding rail moving module. The sliding rail sliding mechanism comprises a sliding block, a connecting plate is arranged at the front end of the sliding block, and the back side of the upper half portion of the connecting plate is fixedly connected with the sliding block. A photoelectric detection element and a reflecting plate are arranged on the connecting plate; the photoelectric detection element is arranged on the back side of the reflecting plate; a transmission device is arranged on one side of the base; the transmission device comprises a motor and a belt; a first belt pulley is arranged below the motor, a second belt pulley is arranged on the other side of the base, and a belt is arranged between the first belt pulley and the second belt pulley; the back side of the lower half part of the connecting plate is fixed on the belt; a laser range finder is arranged on one side of the motor, and the laser range finder and the reflector are oppositely arranged; and the PLC is electrically connected with the photoelectric detection element, the motor and the laser range finder.

Description

Technical Field

[0001] The utility model belongs to the field of fully automated products and relates to a non-contact steel coil width and position deviation measuring device. Background Art

[0002] With the rapid development of the national economy, the steel market has an increasing demand for thin plates. Thin plates are generally divided into hot-rolled thin plates and cold-rolled thin plates. With the development of hot-rolling technology, the original cold-rolling users have carried out large-scale activities of replacing cold with hot to reduce production costs. Based on market demand, major steel mills are actively developing hot-rolled pickling products. Ansteel transformed a pickling unit in 2018, and its products are widely used in automobiles, home appliances, construction and other aspects. Ansteel's pickling plate unit is currently equipped with an entrance loading stepping beam, on which the hot-rolled steel coils are hoisted by a crane. Since the crane has no positioning function, the steel coils can only be roughly placed by visual means, resulting in a geometric center deviation in the position of the steel coil after loading, which will cause the uncoiling and loading to deviate from the center line and cause equipment scratches. Utility Model Content

[0003] In order to solve the problem that the position of the raw steel coil transported to the walking beam is rough and cannot be accurately positioned during the strip production process, resulting in the deviating center line of the unwinding and loading and the equipment scratching, the technical solution adopted by the utility model is: a non-contact steel coil width and position deviation measuring device, including: a PLC controller and a base;

[0004] A movable sliding mechanism is provided on the base;

[0005] The movable sliding mechanism comprises a slide rail and a slide rail moving module; the slide rail is fixed on the base;

[0006] The slide rail moving module comprises a slider and a connecting plate, and the slider is arranged on the slide rail;

[0007] The connecting plate is arranged at the front end of the sliding block, and the back side of the upper half of the connecting plate is fixedly connected to the sliding block;

[0008] The connecting plate is provided with a photoelectric detection element and a reflective plate;

[0009] The photoelectric detection element is arranged on the back side of the reflective plate;

[0010] A transmission device is provided on one side of the base;

[0011] The transmission device comprises a motor and a belt;

[0012] A first pulley is arranged below the motor, a second pulley is arranged on the other side of the base, a belt is arranged between the first pulley and the second pulley; the belt is arranged below the slide rail;

[0013] The back side of the lower half of the connecting plate is fixed to the belt;

[0014] A laser rangefinder is arranged on one side of the motor, and the laser rangefinder is arranged opposite to the reflector;

[0015] The PLC controller is electrically connected to the photoelectric detection element, the motor and the laser rangefinder.

[0016] Furthermore: the motor is a 24V DC motor.

[0017] Furthermore: a cable restraint box is arranged below the slide rail.

[0018] Furthermore: the PLC controller adopts Siemens S7 series PLC control system.

[0019] Furthermore: a connecting block is arranged between the sliding block and the connecting plate.

[0020] Furthermore: an outer frame is arranged outside the motor and the first pulley, and the laser rangefinder is arranged outside the outer frame.

[0021] The utility model provides a device for automatically measuring the width and position deviation of a steel coil. By measuring the actual width of the hot-rolled steel coil and comparing it with the nominal width of the steel coil tracked by the material, the wrong material is prevented from being loaded and causing mixed steel accidents. At the same time, by scanning the position values ​​of the edges of the steel coil on both sides and according to the geometric center position of the steel coil, the deviation of the actual position of the steel coil is calculated to provide data for the transverse trolley for adjusting the position.

[0022] The purpose of the present invention is to sense the width and position of the raw steel coil, and adjust the steel coil so that its geometric center position is aligned with the marking line, and confirm the steel coil by comparing the measured width with the nominal width. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0024] Figure 1 is a structural diagram of the device;

[0025] Figure 2 is a front view annotated diagram of the device;

[0026] Figure 3 is a working schematic diagram of the device;

[0027] Figure numerals: 1. base, 2. movable sliding mechanism, 3. slide rail, 4. slide rail moving module, 5. slider, 6. connecting plate, 7. photoelectric detection element, 8. reflector, 9. transmission device, 10. motor, 11. belt, 12. laser rangefinder, 13. cable restraint box, 14. outer frame. DETAILED DESCRIPTION

[0028] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1 , Figure 2 and Figure 3 A non-contact steel coil width and position deviation measuring device is shown, specifically comprising:

[0031] PLC controller and base 1;

[0032] The base 1 is provided with a moving sliding mechanism 2;

[0033] The movable sliding mechanism 2 includes a slide rail 3 and a slide rail moving module 4; the slide rail 3 is fixed on the base 1;

[0034] The slide rail moving module 4 includes a slider 5 and a connecting plate 6. The slider 5 is arranged on the slide rail 3 and can move on the slide rail 3.

[0035] The connecting plate 6 is arranged at the front end of the slider 5, and the back side of the upper half of the connecting plate 6 is fixedly connected to the slider 5;

[0036] The connecting plate 6 is provided with a photoelectric detection element 7 and a reflective plate 8;

[0037] The photoelectric detection element 7 is arranged on the back side of the reflective plate 8;

[0038] A transmission device 9 is provided on one side of the base 1;

[0039] The transmission device 9 includes a motor 10 and a belt 11;

[0040] A first pulley is provided below the motor 10, a second pulley is provided on the other side of the base 1, a belt 11 is provided between the first pulley and the second pulley; the belt is provided below the slide rail;

[0041] The back side of the lower half of the connecting plate 6 is fixed to the belt 11;

[0042] A laser rangefinder 12 is arranged on one side of the motor 10, and the laser rangefinder 12 is arranged opposite to the reflector 8; the laser rangefinder 12 detects the corresponding target reflector installed on the moving slide mechanism, and the moving slide mechanism can move by driving the toothed belt with a DC motor, the moving range is calibrated to 350-2050 mm, the effective distance is 1.7 meters, and the measurement accuracy is 0.1 mm.

[0043] The PLC controller is electrically connected to the photoelectric detection element 8 , the motor 10 and the laser rangefinder 12 .

[0044] The motor 10 is a 24V DC motor.

[0045] A cable restraint box 13 is arranged below the slide rail 3 .

[0046] A connecting block is provided between the sliding block 5 and the connecting plate 6 .

[0047] An outer frame 14 is disposed outside the motor 10 and the first pulley, and the laser rangefinder 12 is disposed outside the outer frame 14 .

[0048] The base 1 is made of an aluminum alloy bottom plate;

[0049] The bottom seat is provided with a sliding rail mechanism.

[0050] PLC controller: Siemens S7 series PLC control system is adopted, and the Profibus-DP communication of its ET200 substation is used to obtain the data of the laser rangefinder and transmit various control signals. The PLC program calculates the width of the steel coil, calculates the deviation between the geometric center position and the expected center standard line, calculates the limit position of the slide mechanism, and controls the operation of the transmission device.

[0051] The communication interface device is a main line PLC communication device, and the communication interface device is connected to the PLC controller;

[0052] The device control mode of the device is: the device is installed on the No. 3 coil position of the entrance walking beam, in front of the transverse trolley (No. 4 coil position of the walking beam) that can adjust the position of the steel coil. The measuring range is 350-2050mm, and the 1200mm position is aligned with the desired center standard line to ensure that the widest steel coil is within the measurable range. The device is 2340mm away from the axis of the steel coil to ensure that the geometric edge of the steel coil is within the detection range of the photoelectric detection element 7.

[0053] Its specific working modes are: manual and automatic operation modes.

[0054] In manual mode, when the walking beam is stopped, the operator presses the left and right movement buttons of the equipment at the ET200 operating console next to the machine. The command is sent to the main control PLC through the Profibus-DP network of the on-site ET200 substation. The PLC controls the output relay to control the forward and reverse rotation of the motor 10 of the movement mechanism to realize the left and right movement of the detection head.

[0055] In automatic mode, before each measurement starts, the equipment is in the initial position, that is, the slide rail moving module 4 is located on the side close to the laser rangefinder 12, and the value measured by the laser rangefinder at this time is 350mm. After the raw steel coil arrives at the No. 3 position to be detected in front of the equipment, the stepping beam returns to the initial position, and the device starts automatic measurement. The main control PLC sends a command to connect the relay of the DC motor in the ET200 substation, and the DC motor 10 runs, driving the moving slide mechanism 2 to move forward at a constant speed. The photoelectric detection element 7 on the moving slide mechanism 2 starts to detect, and the laser rangefinder 12 also starts to detect. When the light beam of the photoelectric detection element 7 shines on the steel coil, it can detect the reflected light reflected back by diffuse reflection, and its output signal changes from 0 to 1. The ET200 substation receives the signal and sends it to the main control PLC through the communication network, and the main control PLC detects a rising edge signal. At this moment, the PLC immediately records the value of the laser rangefinder 12 and allocates it for storage in a 32-bit internal memory named X.

[0056] The moving slide mechanism 2 does not stop but continues to move forward. During this period, the photoelectric detection element 7 can detect the steel coil all the time, so its output signal is always 1. When it moves over the other edge of the steel coil, the diffusely reflected light disappears, and the output signal of the photoelectric detection element 7 changes from 1 to 0. The ET200 substation receives the signal and sends it to the main control PLC through the communication network, and the main control PLC detects a falling edge signal. At this moment, the PLC immediately records the value of the laser rangefinder 12 and allocates it to be stored in another 32-bit internal memory named Y.

[0057] During the movement of the equipment, the PLC program constantly calculates whether the slide rail moving module 4 reaches the limit position. When the slide rail moving module 4 moves to the limit position, the PLC program controls the DC motor 10 to stop, and then reverses the motor 10 to drive the slide rail mechanism back to the initial position, and the measurement cycle ends.

[0058] Determined by calculation using the following formula:

[0059] Coil width = YX (mm)

[0060] Center position deviation = (1200-X)-(Y-1200) (mm)

[0061] The center position deviation is stored in a data block. It provides data for the positioning program of the traverse carriage on the walking beam.

[0062] Based on the actual width measured, the PLC system compares the steel coil width stored in the material tracking system. If the deviation is large, a steel coil error alarm is issued to prompt the operator to check and confirm to avoid mixed steel accidents.

[0063] The WinCC screen is used to display the steel coil width value and center position deviation, providing operators with a more intuitive operation interface. If the center position deviation is too large and exceeds the adjustment capacity, an alarm will be issued through the WinCC screen to prompt the operator to check.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A non-contact steel coil width and position deviation measuring device, characterized in that: include: PLC controller and base; A movable sliding mechanism is provided on the base; The movable sliding mechanism comprises a slide rail and a slide rail moving module; the slide rail is fixed on the base; The slide rail moving module comprises a slider and a connecting plate, and the slider is arranged on the slide rail; The connecting plate is arranged at the front end of the sliding block, and the back side of the upper half of the connecting plate is fixedly connected to the sliding block; The connecting plate is provided with a photoelectric detection element and a reflective plate; The photoelectric detection element is arranged on the back side of the reflective plate; A transmission device is provided on one side of the base; The transmission device comprises a motor and a belt; A first pulley is arranged below the motor, a second pulley is arranged on the other side of the base, a belt is arranged between the first pulley and the second pulley; the belt is arranged below the slide rail; The back side of the lower half of the connecting plate is fixed to the belt; A laser rangefinder is arranged on one side of the motor, and the laser rangefinder is arranged opposite to the reflector; The PLC controller is electrically connected to the photoelectric detection element, the motor and the laser rangefinder.

2. A non-contact steel coil width and position deviation measuring device according to claim 1, characterized in that: The motor is a 24V DC motor.

3. The non-contact steel coil width and position deviation measuring device according to claim 1, characterized in that: A cable restraint box is arranged below the slide rail.

4. The non-contact steel coil width and position deviation measuring device according to claim 1, characterized in that: The PLC controller adopts Siemens S7 series PLC control system.

5. The non-contact steel coil width and position deviation measuring device according to claim 1, characterized in that: A connecting block is arranged between the sliding block and the connecting plate.

6. The non-contact steel coil width and position deviation measuring device according to claim 1, characterized in that: An outer frame is arranged outside the motor and the first pulley, and the laser rangefinder is arranged outside the outer frame.

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