Ingot casting surface quality detection device

Abstract

The utility model belongs to the technical field of cast ingot surface flatness detection, and discloses a cast ingot surface quality detection device which comprises a support frame, a laser range finder, a support plate, a baffle plate, a limiting shaft, a positive and negative tooth screw rod, a first sliding block, a second sliding block, a motor, a rotating shaft, a vertical rod, a strip steel plate, an adjusting frame, a pin shaft and a fixed seat. According to the cast ingot surface quality detection device, the relative positions of the laser range finders can be flexibly adjusted according to requirements, so that the laser range finders can be uniformly distributed right above the cast ingot to be detected all the time, the applicability is higher, the detection result is more accurate, the fault frequency and the cost of spare parts are greatly reduced, batch quality accidents are avoided, and the production efficiency is improved. And the production efficiency of the ingot milling machine is effectively improved, and a relatively ideal effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ingot surface flatness detection, and particularly relates to an ingot surface quality detection device. Background Art

[0002] Ingot milling is the first process in a hot rolling production line, used to remove scale from the surfaces of aluminum ingots. Currently, ingot milling machines operate due to the uneven surface of the incoming ingots, resulting in significant thickness variations. This excessive thickness variation and excessive milling speed can easily lead to severe damage to the milling cutter, increasing cutter wear and tear, and reducing production efficiency.

[0003] Currently, hot rolling mills rely on multiple suppliers of ingots, offering a wide variety of alloys, specifications, and varying quality. Milling, as the first critical step in hot rolling, requires guaranteed milling surface quality and product output to ensure sufficient milled ingots are loaded into multiple hot rolling furnaces and ensure continuous hot rolling production. Ingot curvature to varying degrees, such as excessive thickness on large surfaces, can cause excessive feed rates, leading to cutter jamming or damage during milling. Localized depressions on large surfaces can result in insufficient feed rates, leaving scale or casting defects unmilled, posing quality risks. Therefore, inspecting the ingot surface quality before milling and adjusting milling parameters promptly can effectively mitigate these issues. Previously used photoelectric detection switches have significant drawbacks: 1. They are susceptible to significant light interference. The operating principle of photoelectric switches relies on the transmission and reception of light. Therefore, strong ambient light or light at specific angles can cause the switch to malfunction or inaccurately measure distance. 2. Susceptible to contamination. The lens of a photoelectric switch is easily contaminated by dust and oil. Once the lens is contaminated, it will not only scatter the light beam but also block part of the light, thus affecting the accuracy and stability of the distance measurement. 3. Relatively slow response speed. Compared with some other types of sensors, the response speed of photoelectric switches is relatively slow, which may affect the performance of some systems or equipment that require fast response.

[0004] A Chinese patent discloses an online scanning device for ingot surface flatness (Announcement No. CN207649564U). The device comprises a laser rangefinder, a control cable, an industrial computer, and a human-machine interface. The laser rangefinder is connected to the industrial computer via the control cable, and the human-machine interface is electrically connected to the industrial computer. The laser rangefinder's laser head is vertically downward and fixedly mounted on a milling machine measuring frame, which is located on the milling machine's worktable. A guide roller is provided on the milling machine's worktable to guide the ingot under the laser rangefinder. Using a laser rangefinder as an ingot surface data acquisition element offers advantages over photoelectric detection switches, such as high measurement accuracy, strong resistance to contamination, interference, vibration, and impact, and fast response speed, making it suitable for the complex production environment of milling machines. However, the laser rangefinder in this scanning device is fixed in position and cannot be flexibly adjusted according to the ingot size. If the ingot to be inspected is too small, the fixed laser rangefinder cannot be evenly distributed directly above the ingot, resulting in inaccurate detection results. If multiple laser rangefinders are arranged above the ingot to enhance the accuracy of ingot surface detection, the cost will be too high and resources will be seriously wasted.

[0005] Therefore, there is an urgent need for an ingot surface quality detection device that is low in cost and can flexibly adjust the relative position of the laser rangefinder according to demand. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the utility model provides an ingot surface quality detection device, which aims to solve the problems of low applicability and poor detection effect of the existing ingot surface detection devices.

[0007] To achieve the above purpose, the utility model is arranged as follows:

[0008] A device for detecting the surface quality of an ingot, comprising a support frame and a laser rangefinder arranged above a milling machine, wherein the milling machine is used to transport the ingot, wherein both ends of the support frame are fixedly connected to a support plate, two baffles are provided on the lower side of the support frame, two limit shafts and a forward and reverse thread screw are provided between the two baffles, the forward and reverse thread screw is rotatably connected to the baffle, a first slider and a second slider are respectively threadedly connected at both ends of the forward and reverse thread screw, the first slider and the second slider are both slidably connected to the limit shaft, the first slider and the second slider are symmetrically arranged at the intersection of the forward and reverse thread screw, the first slider is located at the forward thread section of the forward and reverse thread screw, and the second slider is located at the reverse thread section of the forward and reverse thread screw, a motor is provided on the support plate, an output end of the motor is fixedly connected to a rotating shaft, an end of the rotating shaft away from the motor passes through the baffle and is fixedly connected to the forward and reverse thread screw, a vertical rod is provided at the lower end of the first slider and the second slider, a spacing adjustment mechanism is provided at the lower end of the two vertical rods, and the laser rangefinder is installed on the spacing adjustment mechanism, and the laser rangefinder faces the milling machine;

[0009] The ingot surface quality detection device is also equipped with a computer, a switch and a PLC controller. The milling machine, the motor and the laser rangefinder are all electrically connected to the PLC controller, and the PLC controller is electrically connected to the computer through the switch.

[0010] Furthermore, the spacing adjustment mechanism includes a plurality of long steel plates that cross each other and are connected by hinges to form an adjustment frame that can be telescopically folded. The adjustment frame is arranged horizontally, and the two ends of the adjustment frame are fixedly connected to the corresponding vertical rods respectively. The laser rangefinders are respectively installed at the central intersection of the long steel plates.

[0011] This structural design allows the relative distance between the two vertical rods to be adjusted by a motor, thereby controlling the degree of telescoping and folding of the adjustment frame. Since the laser rangefinder is installed at the central intersection of the long steel plates, the distribution position of the laser rangefinder can be adjusted according to the ingot to be measured, so that the laser rangefinder can always be evenly distributed directly above the ingot to be measured, which has stronger applicability and more accurate detection results.

[0012] Furthermore, the long steel plates are hinged by pins.

[0013] Furthermore, the pins at the central intersections of the long steel plates are fixedly connected to fixed seats, and the laser rangefinder is installed on the fixed seats.

[0014] Furthermore, the surface of the limiting shaft is provided with scale lines.

[0015] This structural design allows the relative position of the slider to be directly observed through the scale line and compared with the set target position to further determine the accuracy of the motor drive.

[0016] Beneficial effects:

[0017] The utility model discloses an ingot surface quality detection device, which is provided with a support frame, a laser rangefinder, a support plate, a baffle, a limit shaft, a positive and negative thread screw, a first slider, a second slider, a motor, a rotating shaft, a vertical rod, a long steel plate, an adjustment frame, a pin shaft and a fixing seat. The relative position of the laser rangefinder can be flexibly adjusted according to needs, so that the laser rangefinder can always be evenly distributed above the ingot to be measured, the applicability is stronger, and the detection result is more accurate.

[0018] This invention accurately detects the surface quality of ingots, effectively resolving quality issues such as ingot milling machine jamming or cutter damage caused by excessively thick ingot surfaces, or unremoved scale or casting defects caused by localized depressions on the ingot surfaces. This significantly reduces failure frequency and spare parts costs, avoids batch quality incidents, and effectively improves the production efficiency of ingot milling machines, achieving relatively ideal results. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of an ingot surface quality detection device according to the present invention;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 is a side view of the adjustment frame;

[0022] Figure 4 This is a system diagram of an ingot surface quality detection device of the utility model;

[0023] The reference numerals in the figure are as follows: milling machine 1, support frame 2, laser rangefinder 3, ingot 4, support plate 5, baffle 6, limit shaft 7, forward and reverse thread screw 8, first slider 9, second slider 10, motor 11, rotating shaft 12, vertical rod 13, switch 14, PLC controller 15, long steel plate 16, adjusting frame 17, pin shaft 18, and fixing seat 19. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and are only schematic diagrams, not actual drawings. They should not be understood as limiting the present invention. In order to better illustrate the embodiments of the present invention, some parts in the figures may be omitted, enlarged or reduced, and do not represent the dimensions of the actual product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the figures.

[0025] The same or similar numbers in the figures of the embodiments of the present invention correspond to the same or similar parts. In the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", "front", "back", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the figures. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the figures are only used for illustrative purposes and cannot be understood as limitations on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] like Figure 1-4As shown, the utility model discloses an ingot surface quality detection device, comprising a support frame 2 and a laser rangefinder 3 arranged above a milling machine 1, the milling machine 1 being used to convey an ingot 4, support plates 5 being fixedly connected to the left and right ends of the support frame 2, two baffles 6 being fixedly connected to the lower side of the support frame 2, two limit shafts 7 and a forward and reverse threaded screw 8 being arranged between the two baffles 6, and the forward and reverse threaded screw 8 being located between the two limit shafts 7. The forward and reverse threaded screw 8 is rotatably connected to the baffle 6, and a first slider 9 and a second slider 10 are respectively threadedly connected to the left and right ends of the forward and reverse threaded screw 8, the first slider 9 and the second slider 10 are both slidably connected to the limit shaft 7, the first slider 9 and the second slider 10 are symmetrically arranged at the interface of the forward and reverse threaded screw 8, the first slider 9 is located at the forward thread section of the forward and reverse threaded screw 8, and the second slider 10 is located at the reverse thread section of the forward and reverse threaded screw 8. A motor 11 is installed on the upper part of the right support plate 5, and the output end of the motor 11 is fixedly connected to the rotating shaft 12. The left end of the rotating shaft 12 passes through the baffle 6 and is fixedly connected to the forward and reverse threaded screw 8. The lower ends of the first slider 9 and the second slider 10 are fixedly connected to the vertical rod 13. A spacing adjustment mechanism is provided between the two vertical rods 13. The laser rangefinder 3 is installed on the spacing adjustment mechanism, and the laser rangefinder 3 is facing the milling machine 1.

[0027] The ingot surface quality detection device is also equipped with a computer, a switch 14 and a PLC controller 15. The milling machine 1, the motor 11 and the laser rangefinder 3 are all electrically connected to the PLC controller 15, and the PLC controller 15 is electrically connected to the computer through the switch 14.

[0028] As a preferred embodiment of this embodiment, the spacing adjustment mechanism includes a plurality of long steel plates 16 that cross each other and are connected by hinges to form an adjustment frame 17 that can be telescopically folded. The adjustment frame 17 is horizontally arranged, and the two ends of the adjustment frame 17 are respectively fixedly connected to the corresponding vertical rods 13. In this embodiment, the number of laser rangefinders 3 is 7, and the 7 laser rangefinders 3 are evenly spaced and installed at the center intersection of the long steel plates 16.

[0029] The laser rangefinder 3 has a measuring range of 100 mm to 400 mm, a repeatability of 75 μm, a measuring frequency of ≤1.33 kHz, uses a red laser as a light source, requires a measuring error of ≤0.1 mm, and has a 4 to 20 mA analog signal output.

[0030] As a preferred embodiment of the present invention, the long steel plates 16 are hinged by pins 18 , and the pins 18 at the central intersections of the long steel plates 16 are fixedly connected to the fixing seats 19 , and the laser rangefinder 3 is mounted on the fixing seats 19 .

[0031] As a preference of this embodiment, scale lines are provided on the surface of the limiting shaft 7 .

[0032] Laser rangefinder 3 measures the distance to the surface of ingot 4 with high accuracy and strong resistance to interference, vibration, and shock, making it suitable for the complex production environment of milling machine 1. Data collection utilizes an S7-1200 CPU and an SM1231 AI4*16-bit analog input module, collecting analog signals and inputting them into the PLC control. The PLC transmits data to the computer via Ethernet. On the client computer, data is processed using PL / SQL Developer database software and ProfilerCurveModule (Profilometer Curve Display) to create a surface profile curve that directly reflects the surface quality of ingot 4. This curve uses the ingot 4 thickness baseline as a reference value. Deviations are calculated for each sampled value from laser rangefinder 3 to determine the surface quality of ingot 4.

[0033] The operation process of the surface quality detection device of the ingot 4 of the utility model is as follows:

[0034] First, place the ingot 4 to be tested on the milling machine 1. Then, according to the input data of the ingot 4 to be tested, adjust the relative position of the laser rangefinder 3 so that the laser rangefinder 3 can always be evenly distributed directly above the ingot 4 to be tested, which makes it more applicable and the test results more accurate. Start the motor 11. The motor 11 drives the forward and reverse screws 8 to rotate synchronously through the rotating shaft 12. Due to the limiting effect of the two limiting shafts 7, the first slider 9 and the second slider 10 move closer or farther away from each other until the first slider 9 and the second slider 10 move to the target position. The first slider 9 and the second slider 10 drive the adjustment frame 17 to fold or extend through the vertical rod 13. During the folding and extending process of the adjustment frame 17, the laser rangefinder 3 moves closer or farther away from each other until the laser rangefinder 3 is evenly distributed directly above the ingot 4 to be tested. During the movement, the laser rangefinder 3 is always evenly distributed, and the position of the laser rangefinder 3 in the middle remains unchanged.

[0035] The operator can adjust the milling parameters in time according to the surface profile curve of the ingot 4 fed back by the laser rangefinder 3 in actual measurement.

[0036] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and such modifications or equivalent substitutions shall be encompassed by the claims of the present invention. The techniques, shapes, and structural portions not described in detail in the present invention are well known.

Claims

1. An ingot surface quality detection device, characterized in that: The invention comprises a support frame (2) and a laser rangefinder (3) arranged above a milling machine (1), wherein the milling machine (1) is used to convey an ingot (4), and both ends of the support frame (2) are fixedly connected with a support plate (5), and two baffles (6) are provided on the lower side of the support frame (2), and two limiting shafts (7) and a positive and negative threaded screw (8) are provided between the two baffles (6), and the positive and negative threaded screw (8) is rotatably connected to the baffle (6), and both ends of the positive and negative threaded screw (8) are respectively threadedly connected with a first slider (9) and a second slider (10), and the first slider (9) and the second slider (10) are both slidably connected to the limit shaft (7), and the first slider (9) and the second slider (10) are rotatably connected to the positive and negative threaded screw (8). The interface is symmetrically arranged, the first slider (9) is located in the forward thread section of the forward and reverse thread screw (8), the second slider (10) is located in the reverse thread section of the forward and reverse thread screw (8), the support plate (5) is provided with a motor (11), the output end of the motor (11) is fixedly connected to a rotating shaft (12), the end of the rotating shaft (12) away from the motor (11) passes through the baffle (6) and is fixedly connected to the forward and reverse thread screw (8), the lower ends of the first slider (9) and the second slider (10) are both provided with vertical rods (13), the lower ends of the two vertical rods (13) are provided with a spacing adjustment mechanism, the laser rangefinder (3) is installed on the spacing adjustment mechanism, and the laser rangefinder (3) faces the milling machine (1); The ingot surface quality detection device is also equipped with a computer, a switch (14) and a PLC controller (15); the milling machine (1), the motor (11) and the laser rangefinder (3) are all electrically connected to the PLC controller (15); and the PLC controller (15) is electrically connected to the computer via the switch (14).

2. The ingot surface quality detection device according to claim 1, characterized in that: The spacing adjustment mechanism comprises a plurality of long steel plates (16) that cross each other and are connected via hinges to form an adjustment frame (17) that can be telescopically folded. The adjustment frame (17) is arranged horizontally, and both ends of the adjustment frame (17) are fixedly connected to corresponding vertical rods (13). The laser rangefinders (3) are respectively installed at the central intersections of the long steel plates (16).

3. The ingot surface quality detection device according to claim 2, characterized in that: The long steel plate (16) is hinged via a pin (18).

4. The ingot surface quality detection device according to claim 3, characterized in that: The pins (18) at the central intersections of the long steel plates (16) are fixedly connected to a fixing seat (19), and the laser rangefinder (3) is mounted on the fixing seat (19).

5. The ingot surface quality detection device according to claim 1, characterized in that: The surface of the limiting shaft (7) is provided with scale lines.

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