Aluminum plate strip hot rolling stub bar upwarp detection device

Abstract

The utility model discloses an aluminum plate strip hot rolling stub bar upwarp detection device which comprises two working roll baffles which are symmetrically arranged relative to an upper working roll, protection devices are arranged on the two working roll baffles at the same height, each protection device comprises a protection cover, a laser distance measuring sensor is arranged in each protection cover, and the laser distance measuring sensors are arranged on the working roll baffles. A detection part of the laser distance measuring sensor penetrates through and is exposed at the lower end of the protective cover, and air outlet holes which are uniformly distributed are formed in the bottom of the protective cover and are used for blowing away oil mist on the lower side of the laser distance measuring sensor. According to the aluminum plate strip hot rolling stub bar upwarp detection device, the height of a strip at a rolling discharge port can be detected, so that whether the strip is upwarped or upwarped or not is detected, timely shutdown treatment is facilitated, manual observation is not needed, the detection precision is high, operation is easy, use is convenient, and the production efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of nonferrous metal processing, in particular to a device for detecting the warping of a hot-rolled material head of an aluminum plate strip. Background Art

[0002] The impact of aluminum slab buckle warping on rolling: From the perspective of protecting equipment and rolling stability, the ideal rolling state is when the head and tail of the aluminum slab are slightly warped. However, due to the combined effect of complex rolling factors, the head and tail of the aluminum slab are often warped downward or too much upward, which poses a greater threat to equipment safety and production stability. The impact of large warping or downward warping of aluminum slabs on production is as follows: When the aluminum slab is warped downward and running at high speed, it is easy to hit the roller and skirt, damage the roller bearing or break the roller, and cause accidents such as hitting the skirt and piling; when the aluminum slab is warped upward, the temperature drop of the upward part of the billet is the largest due to water erosion, forming serious black spots, which reduces the plasticity of the black spots, and is easy to form cracks after rolling, reducing the surface quality; at the same time, the deformation resistance of the black board increases, and there is a risk of overload and shutdown of the rolling mill.

[0003] At present, the phenomenon of abnormal upwarping and downwarping of the material head often occurs in the production process of aluminum plate and strip hot rolling mill. However, due to the poor working conditions, high temperature and serious influence of emulsion on site, there are no corresponding detection components, and the technicians can only observe it with their naked eyes, which has low accuracy and greatly reduces production efficiency. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a device for detecting the warping of the hot-rolled material head of an aluminum plate and strip, which can detect the height of the strip at the rolling outlet, thereby detecting whether the strip is warped up or down, and facilitating timely shutdown processing. No manual observation is required, the detection accuracy is high, the operation is simple, and it is easy to use. It can improve production efficiency and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for detecting the warping of hot-rolled aluminum strip, comprising two working roll baffles symmetrically arranged about an upper working roll, protective devices are provided at the same height of the two working roll baffles, and the protective devices include a protective cover, a laser ranging sensor is provided inside the protective cover, and the detection part of the laser ranging sensor passes through and is exposed at the lower end of the protective cover, and evenly distributed air outlet holes are opened at the bottom of the protective cover to blow away the oil mist on the lower side of the laser ranging sensor.

[0006] As a preferred technical solution of the utility model, the air outlet at the bottom of the protective cover is arranged obliquely so that the air discharged from the air outlet blows toward the lower side of the detection part of the laser ranging sensor.

[0007] As a preferred technical solution of the utility model, a ventilation duct is provided on the top of the protective cover, and an air inlet of the ventilation duct is connected to an air compressor.

[0008] As a preferred technical solution of the utility model, a cable protection conduit is provided on the top of the protective cover, and the cable of the laser ranging sensor is inserted into the cable protection conduit.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The device for detecting the warping of the hot-rolled aluminum plate and strip in the example of the utility model can detect the height of the strip at the rolling outlet, thereby detecting whether the strip is warped up or down, which is convenient for timely shutdown processing. No manual observation is required, the detection accuracy is high, the operation is simple, and it is easy to use, which can improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] Figure 2 It is a structural schematic diagram of the protection device in the utility model;

[0013] Figure 3 for Figure 2 Front view of .

[0014] In the figure: 1 working roll baffle, 2 protective cover, 21 air outlet, 3 laser distance sensor, 31 cable protection pipe, 4 ventilation pipe, 5 air compressor. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-3, the present utility model provides a technical solution: a detection device for the warping of the hot-rolled stock head of an aluminum strip, which includes two working roll baffles 1 symmetrically arranged with respect to the upper working roll. Protection devices are provided at the same height of the two working roll baffles 1, and the protection device includes a protective cover 2. A laser distance sensor 3 is provided inside the protective cover 2, and the detection part of the laser distance sensor 3 penetrates and is exposed at the lower end of the protective cover 2. The bottom of the protective cover 2 is provided with uniformly distributed air outlet holes 21 for blowing away the oil mist under the laser distance sensor 3. The height between the laser distance sensor 3 and the bottom of the upper working roll is L1; the height between the laser distance sensor 3 and the strip at the outlet side of the rolling mill is L2; when the strip does not warp up or down, the upper surface of the strip is flat, and at this time L1 = L2; when the strip warps down, the height between the laser distance sensor 3 and the strip increases, and at this time L1 < L2, that is, L2 / L1 > 1; when the strip warps up, the height between the laser distance sensor 3 and the strip decreases, and at this time L2 < L1, that is, L2 / L1 < 1.

[0017] Further, the air outlet holes 21 at the bottom of the protective cover 2 are inclined so that the air discharged from the air outlet holes 21 blows to the lower side of the detection part of the laser distance sensor 3. An air ventilation pipe 4 is provided at the top of the protective cover 2, and the air inlet of the air ventilation pipe 4 is connected to an air compressor 5. The air compressor 5 conveys compressed air into the protective cover 2 through the air ventilation pipe 4 and then discharges it through the air outlet holes 21, so as to blow away the oil mist under the laser distance sensor 3 and prevent the oil mist from adhering to the bottom of the laser distance sensor 3, thereby avoiding affecting the detection effect of the laser distance sensor 3.

[0018] Further, a cable protection pipe 31 is provided at the top of the protective cover 2, and the cable of the laser distance sensor 3 is inserted into the cable protection pipe 31, which can protect the cable of the laser distance sensor 3.

[0019] The laser distance sensor 3, air compressor 5, etc. used in the present utility model are all common electronic components or devices in the prior art, and their working methods and circuit structures are all well-known technologies, which will not be elaborated here. The laser distance sensor amplifies and processes the detected signal through a signal amplifier, then performs data acquisition through a PLC programmable controller, and finally processes and displays the result.

[0020] When in use:

[0021] The height between the laser distance sensor 3 and the bottom of the upper working roll is L1;

[0022] The height between the laser distance sensor 3 and the strip at the outlet side of the rolling mill is L2;

[0023] When the strip does not warp up or down, the upper surface of the strip is flat, and at this time L1 = L2;

[0024] When the strip warps downward, the height between the laser distance sensor 3 and the strip increases. At this time, L1 < L2, that is, L2 / L1 > 1;

[0025] When the strip warps upward, the height between the laser distance sensor 3 and the strip decreases. At this time, L2 < L1, that is, L2 / L1 < 1.

[0026] The utility model can detect the height of the strip at the rolling discharge port, so as to detect whether the strip warps upward or downward, which is convenient for timely shutdown processing. It does not require manual observation, has high detection accuracy, is simple to operate and convenient to use, and can improve production efficiency.

[0027] The parts not disclosed in the utility model are all prior arts, and their specific structures, materials and working principles will not be elaborated. Although the embodiments of the utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the warping of hot-rolled aluminum strip, comprising two working roll baffles (1) symmetrically arranged about an upper working roll, characterized in that: A protective device is provided at the same height of the two working roll baffles (1), and the protective device comprises a protective cover (2), a laser distance sensor (3) is provided inside the protective cover (2), and a detection portion of the laser distance sensor (3) penetrates and is exposed at the lower end of the protective cover (2), and evenly distributed air outlet holes (21) are provided at the bottom of the protective cover (2) for blowing away oil mist on the lower side of the laser distance sensor (3).

2. The device for detecting the warping of the hot-rolled aluminum strip according to claim 1 is characterized in that: The air outlet hole (21) at the bottom of the protective cover (2) is arranged at an angle so that the air discharged from the air outlet hole (21) is blown toward the lower side of the detection part of the laser distance measuring sensor (3).

3. The device for detecting the warping of the hot-rolled aluminum strip according to claim 1 is characterized in that: A ventilation duct (4) is provided on the top of the protective cover (2), and an air inlet of the ventilation duct (4) is connected to an air compressor (5).

4. The device for detecting the warping of hot-rolled aluminum strip according to claim 1, characterized in that: A cable protection conduit (31) is provided on the top of the protective cover (2), and the cable of the laser distance measuring sensor (3) is inserted into the cable protection conduit (31).

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