Sensor for detecting position of steel belt

Abstract

The invention relates to the technical field of steel belt detection sensors, and provides a sensor for detecting the position of a steel belt, which comprises a light source emitter arranged on a frame body, located below the steel belt and used for emitting light; the first adjusting frame is detachably arranged on the frame body; the second adjusting frame is rotationally arranged on the first adjusting frame; the third adjusting frame is rotationally arranged on the second adjusting frame; the second adjusting frame and the third adjusting frame rotate in different directions; the fourth adjusting frame is rotationally arranged on the third adjusting frame, and the rotating direction of the fourth adjusting frame is different from the rotating directions of the third adjusting frame and the second adjusting frame; and the detection piece is arranged on the fourth adjusting frame, is located above the steel belt and is used for detecting light which is emitted by the light source emitter and is not blocked by the steel belt. According to the technical scheme, the problem that the installation efficiency is affected due to the fact that the position of the sensor device is difficult to adjust when the installation position of the sensor device has a certain inclination angle in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steel strip detection sensors, and in particular to a sensor for detecting the position of a steel strip. Background Art

[0002] In modern industrial production, the processing and transportation of steel strips require precise position detection to ensure the smooth progress of the production process and the stability of product quality. Accurate detection of the position of steel strips is of great significance for realizing automated production, improving production efficiency, reducing scrap rate and ensuring production safety.

[0003] Traditional methods of detecting the position of steel strips have many limitations. For example, some contact detection devices may scratch or damage the surface of the steel strip, affecting the quality of the steel strip. Detection methods based on ordinary light sources are often interfered by ambient light, and detection accuracy and stability are difficult to guarantee. In addition, existing detection equipment may not be able to capture position information in a timely and accurate manner when dealing with high-speed steel strips, resulting in production deviations.

[0004] With the continuous improvement of industrial automation, the demand for accurate, fast and stable detection of steel strip position is becoming more and more urgent. As a new detection technology, linear light source sensor has the advantages of high precision, non-contact measurement and strong anti-interference ability, and has gradually become a research hotspot in the field of steel strip position detection. However, the linear light source sensors on the market still have some problems in practical applications, such as complex installation and debugging, insufficient adaptability to complex working conditions, etc., which need further improvement and optimization.

[0005] In the prior art, the Chinese invention patent with publication number CN108240833A is an adjustable laser sensor fixing mechanism, which realizes the change of different positions of the laser sensor by setting up components such as a slidable first bracket and a second bracket and a fixing frame and a groove. However, although this solution can realize the change of the position of the laser sensor, it cannot realize the adjustment of its angle. If the installation position itself has a certain inclination angle, this angle cannot be adjusted by its own adjustment. Summary of the invention

[0006] The present invention provides a sensor for detecting the position of a steel strip, which solves the problem in the related art that when the installation position of the sensor device itself has a certain inclination angle, its own position is difficult to adjust, which affects the installation efficiency.

[0007] The technical solution of the present invention is as follows: A sensor for detecting the position of a steel belt, used for detecting the conveying position of the steel belt during the conveying process, comprising: Frame; A light source emitter is arranged on the frame, the light source emitter is located below the steel belt, and the light source emitter is used to emit light; A first adjustment frame, detachably arranged on the frame body; a second adjustment frame, rotatably disposed on the first adjustment frame; a third adjustment frame, rotatably arranged on the second adjustment frame; the second adjustment frame and the third adjustment frame have different rotation directions; A fourth adjustment frame, rotatably arranged on the third adjustment frame, wherein the rotation direction of the fourth adjustment frame is different from the rotation directions of the third adjustment frame and the second adjustment frame; A detection member is arranged on the fourth adjustment frame, the detection member is located above the steel belt, and the detection member is used to detect the light emitted by the light source emitter and not blocked by the steel belt.

[0008] As a further technical solution, the light source emitter includes: The shell has a protective space, the top of the protective space has an opening, and the shell has a first slide groove and a second slide groove; A circuit board is slidably disposed in the first slide groove; A reflector, which is U-shaped and slidably disposed in the second slide groove, and the reflector is located above the circuit board; There are a plurality of LED lamps arranged in an array on the reflective plate, and the reflective plate is used to reflect the light emitted by the plurality of LED lamps.

[0009] As a further technical solution, the opening has a third slide groove, and a protective plate is slidably arranged in the third slide groove. After the protective plate slides, the opening is opened or closed. The protective plate is made of a light-transmitting material and is used to protect the reflective plate in the outer shell.

[0010] As a further technical solution, it also includes: A light diffuser is slidably arranged on the reflector. The light diffuser is located above the plurality of LED lamps and is used for refracting light emitted by the plurality of LED lamps.

[0011] As a further technical solution, the housing has a plurality of screw holes at both ends, and further comprises: There are two sealing heads, which are detachably arranged at both ends of the shell, and the two sealing heads have a plurality of through holes, the through holes correspond to the positions of the screw holes, and the sealing heads are used to close the protection space; The first mounting bolt is detachably arranged on the screw hole, and the first mounting bolt passes through the through hole and is threadably matched with the screw hole.

[0012] As a further technical solution, it also includes: A mounting plate, arranged on the end cover, the mounting plate having a mounting groove; A second mounting bolt is detachably disposed in the mounting groove, and the second mounting bolt is used to fix the head on the frame.

[0013] As a further technical solution, the first adjustment frame has a damping hole and a locking hole connected to the damping hole, and further comprises: A damping rod is arranged at one end of the second adjustment frame, and the damping rod is rotatably arranged in the damping hole; A limiting bolt is arranged in the locking hole. After the limiting bolt is rotated, it abuts against or cancels the abutment with the damping rod. After the limiting bolt abuts against the damping rod, it is used to limit the second adjustment frame from rotating along the first adjustment frame.

[0014] As a further technical solution, the axis of the damping hole is perpendicular to the axis of the locking hole.

[0015] As a further technical solution, the second adjustment frame, the third adjustment frame and the fourth adjustment frame rotate along the X-axis, Y-axis and Z-axis directions respectively.

[0016] As a further technical solution, the rotation and locking forms of the third adjustment frame and the fourth adjustment frame are the same as the rotation and locking forms of the second adjustment frame.

[0017] The beneficial effects of the present invention are: In the present invention, the steel belt is continuously conveyed forward through the frame, and the frame provides a stable support structure for the entire detection device, ensuring stability and reliability during the detection process. The light source emitter is located below the steel belt and emits a light source toward the steel belt. This layout can effectively prevent the light source from being disturbed by the outside world and ensure the stability and consistency of the emitted light. The detachable design of the first adjustment frame facilitates the installation, maintenance and replacement of the equipment and improves the operability of the equipment. The multi-stage rotation setting of the second, third and fourth adjustment frames enables the detection member to be flexibly adjusted in multiple directions. If the installation position of the detection member has a certain inclination, the detection member can be stably directed toward the light source emitter when rotating different adjustment frames to adapt to different steel belt positions and detection requirements, greatly improving the adaptability and accuracy of the detection. There is a rotation damping between different adjustment frames, which can ensure the stability of the position after rotation. Through the rotation adjustment in different directions, the detection member can be accurately positioned to the optimal detection position, so as to more accurately detect the light emitted by the light source emitter and not blocked by the steel belt, and improve the detection accuracy. This multi-degree-of-freedom adjustment structure can cope with the position changes and fluctuations during the conveying process of the steel belt, and ensure continuous, stable and accurate detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0019] Figure 1 It is a front view of the present invention; Figure 2 is a side view of the present invention; Figure 3 It is a schematic diagram of the structure of the first adjustment frame, the second adjustment frame and the third adjustment frame in the present invention; Figure 4 A schematic structural diagram of the first adjustment frame, the second adjustment frame and the third adjustment frame in the present invention from another perspective; Figure 5 It is a schematic diagram of the structure of the first adjustment frame and the second adjustment frame in the present invention; Figure 6 It is a structural schematic diagram of the first adjustment frame and the second adjustment frame in the present invention from another perspective; Figure 7 It is a structural schematic diagram of the light source emitter in the present invention; Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point B in the middle; Fig. 9 It is a schematic diagram of the structure inside the light source emitter of the present invention; Fig.10 For the present invention Fig. 9 A partial enlarged schematic diagram of point C in the middle; Fig.11 It is a partial exploded view of the internal parts of the present invention; Fig.12 It is a cross-sectional view of the internal structure of the light source emitter of the present invention.

[0020] In the figure: 110, steel belt, 210, frame, 310, light source transmitter, 4100, first adjustment frame, 4200, second adjustment frame, 4300, third adjustment frame, 4400, fourth adjustment frame, 4500, detection member, 311, shell, 312, protection space, 313, opening, 314, first slide groove, 315, second slide groove, 3141, circuit board, 3151, reflector, 3152, LED lamp, 316, third slide groove, 3161, protective plate, 3153, uniform light plate, 410, screw hole, 420, head, 430, through hole, 440, first mounting bolt, 450, mounting plate, 451, mounting groove, 460, second mounting bolt, 510, damping hole, 520, locking hole, 530, damping rod, 540, limit bolt. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, they can also be understood as further technical solutions without creative work. In some figures, components with the same structure or function are only schematically illustrated, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0022] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] Reference Figure 1 to Figure 12 , which is the first embodiment of the present invention, proposes a linear light source sensor for detecting the position of the steel belt 110, which is used to detect the conveying position of the steel belt 110 during the conveying process, including: a light source emitter 310 is set on the frame 210, the light source emitter 310 is located below the steel belt 110, and the light source emitter 310 is used to emit light; a first adjustment frame 4100 is detachably set on the frame 210; a second adjustment frame 4200 is rotatably set on the first adjustment frame 4100; a third adjustment frame 4300 is rotatably set on On the second adjustment frame 4200; the second adjustment frame 4200 has a different rotation direction from the third adjustment frame 4300; the fourth adjustment frame 4400 is rotatably set on the third adjustment frame 4300, and the rotation direction of the fourth adjustment frame 4400 is different from the rotation directions of the third adjustment frame 4300 and the second adjustment frame 4200; the detection member 4500 is set on the fourth adjustment frame 4400, and the detection member 4500 is located above the steel belt 110, and the detection member 4500 is used to detect the light emitted by the light source emitter 310 and not blocked by the steel belt 110.

[0025] In this embodiment, the steel belt 110 is continuously transported forward through the frame 210, and the frame 210 provides a stable support structure for the entire detection device, ensuring stability and reliability during the detection process. The light source emitter 310 is located below the steel belt 110 and emits a light source toward the steel belt 110. This layout can effectively prevent the light source from being disturbed by the outside world and ensure the stability and consistency of the emitted light. The detachable design of the first adjustment frame 4100 facilitates the installation, maintenance and replacement of the equipment and improves the operability of the equipment. The multi-stage rotation setting of the second, third and fourth adjustment frames 4400 enables the detection member 4500 to be flexibly adjusted in multiple directions. If the installation position of the detection member 4500 has a certain inclination, the detection member 4500 can be stably directed toward the light source emitter 310 by rotating different adjustment frames to adapt to different steel belt 110 positions and detection requirements, greatly improving the adaptability and accuracy of the detection. There is rotation damping between different adjustment frames to ensure the stability of the position after rotation. By adjusting the rotation in different directions, the detection member 4500 can be accurately positioned at the optimal detection position, so as to more accurately detect the light emitted by the light source emitter 310 and not blocked by the steel belt 110, thereby improving the detection accuracy. This multi-degree-of-freedom adjustment structure can cope with the position changes and fluctuations of the steel belt 110 during the transportation process, ensuring continuous, stable and accurate detection.

[0026] As a further technical solution, the light source emitter 310 includes: a shell 311 having a protective space 312, a top of the protective space 312 having an opening 313, and the shell 311 having a first slide groove 314 and a second slide groove 315; a circuit board 3141 is slidably set in the first slide groove 314; a reflector 3151 is U-shaped and slidably set in the second slide groove 315, and the reflector 3151 is located above the circuit board 3141; there are a plurality of LED lamps 3152, which are arranged in an array on the reflector 3151, and the reflector 3151 is used to reflect light emitted by a plurality of LED lamps 3152.

[0027] In this embodiment, the protective space 312 of the housing 311 can provide effective protection for the internal circuit board 3141, the reflector 3151 and the LED lamp 3152, reduce the damage to them by external factors, and extend the service life of the light source transmitter 310. The circuit board 3141 slidably arranged in the first slide groove 314 is convenient for installation, disassembly and maintenance, which improves the maintainability of the equipment. The U-shaped reflector 3151 is slidably arranged in the second slide groove 315, which is convenient for adjusting the position of the reflector 3151 and optimizing the reflective effect. A plurality of LED lamps 3152 arranged in an array can provide sufficient and uniform light sources to ensure the accuracy and stability of detection. The reflector 3151 can reflect and gather the light emitted by the LED lamp 3152, enhance the intensity and directionality of the light, and improve the sensitivity and accuracy of the detection. This adjustable structural design enables the light source transmitter 310 to be flexibly configured according to different detection environments and requirements, and adapt to various complex detection conditions. The LED lamp 3152 is under the unified control of the circuit board 3141 and can emit high-frequency light. The detection component 4500 can detect specific high-frequency light, further avoiding the influence of natural light on the sensor and improving the accuracy of detection.

[0028] As a further technical solution, a linear light source sensor for detecting the position of the steel belt 110 is characterized in that a third slide groove 316 is also provided on the outer shell 311, and further includes: a protective plate 3161 is slidably arranged in the third slide groove 316, the protective plate 3161 is made of a light-transmitting material, the protective plate 3161 is located above the reflective plate 3151, and the protective plate 3161 opens or closes the opening 313 after sliding, and the protective plate 3161 is used to protect the reflective plate 3151 in the outer shell 311.

[0029] In this embodiment, the protective plate 3161 slidingly arranged in the third slide groove 316 is easy to operate and convenient for maintenance and adjustment of the internal structure. The protective plate 3161 is made of a light-transmitting material, which protects the internal reflector 3151 without affecting the emission and transmission of light, thereby ensuring the normal realization of the detection function. The protective plate 3161 can effectively block external dust, impurities and possible collisions, reduce the risk of contamination and damage to the reflector 3151, and improve the reliability and stability of the light source emitter 310. The sliding protective plate 3161 is compact in design, does not occupy additional space, and can be tightly combined with the housing 311 in the closed state to provide good sealing performance. The existence of the protective plate 3161 prolongs the service life of the reflector 3151 and reduces the problem of reduced light source quality and reduced detection accuracy caused by damage to the reflector 3151. The sliding design makes the sensor maintenance more convenient. Even if the sensor fails, it can be repaired or replaced more conveniently, making the use of the sensor more convenient.

[0030] As a further technical solution, it also includes: a light homogenizing plate 3153 is slidably set on the reflector 3151, the light homogenizing plate 3153 is located above the plurality of LED lamps 3152, and the light homogenizing plate 3153 is used to refract light emitted by the plurality of LED lamps 3152.

[0031] In this embodiment, the light homogenizing plate 3153 is slidably arranged on the reflector 3151 for easy installation and disassembly. The light homogenizing plate 3153 located above the plurality of LED lamps 3152 can refract and evenly distribute the light emitted by the LED lamps 3152, making the emitted light more uniform and soft, reducing the local concentration and intensity difference of the light. Uniform light can improve the accuracy and stability of detection and avoid detection errors caused by uneven light. The slidable light homogenizing plate 3153 can adjust the distance and angle with the LED lamp 3152 according to actual needs, further optimize the light homogenizing effect, and adapt to different detection scenarios and requirements. The setting of the light homogenizing plate 3153 helps to reduce the scattering and waste of light, improve the utilization efficiency of the light source, and enhance the overall performance of the sensor.

[0032] As a further technical solution, the two ends of the outer shell 311 have a plurality of screw holes 410, and also include: two end caps 420, which are detachably arranged at the two ends of the outer shell 311, and the two end caps 420 have a plurality of through holes 430, and the positions of the through holes 430 correspond to the positions of the screw holes 410, and the end caps 420 are used to close the protective space 312; the first mounting bolt 440 is detachably arranged on the screw hole 410, and the first mounting bolt 440 passes through the through hole 430 and is threadedly matched with the screw hole 410.

[0033] In this embodiment, the screw holes 410 at both ends of the housing 311 provide reliable connection points for the installation of the end cap 420, ensuring that the end cap 420 can be firmly installed at both ends of the housing 311. The end cap 420 is detachable, which is convenient for installing, repairing and replacing the components inside the protective space 312, and improves the convenience of maintenance. The two end caps 420 can effectively seal the protective space 312, prevent dust, water vapor and other impurities from entering, protect the internal circuit board 3141, reflector 3151 and LED lamp 3152 and other components from the external environment, and extend their service life. The through hole 430 corresponds to the position of the screw hole 410, and cooperates with the first mounting bolt 440, so that the installation and disassembly of the end cap 420 is simple and quick, while ensuring the stability and sealing of the connection. The detachable end cap 420 and the first mounting bolt 440 are simple in structure and low in cost, but can effectively guarantee the normal operation and maintenance requirements of the light source emitter 310.

[0034] As a further technical solution, it also includes: a mounting plate 450 is arranged on the head 420, and a mounting groove 451 is provided on the mounting plate 450; a second mounting bolt 460 is detachably arranged in the mounting groove 451, and the second mounting bolt 460 is used to fix the head 420 on the frame 210.

[0035] In this embodiment, the mounting plate 450 is disposed on the end cap 420, providing an additional mounting and fixing point for the end cap 420, thereby increasing the stability and reliability of the installation of the end cap 420. The design of the mounting groove 451 allows the position of the second mounting bolt 460 to be adjusted according to actual needs, thereby increasing the flexibility of the installation. The second mounting bolt 460 is detachably disposed in the mounting groove 451, which facilitates the installation and disassembly of the end cap 420 and the maintenance and replacement of the light source emitter 310. The end cap 420 is fixed to the frame 210 by the second mounting bolt 460, thereby ensuring the position stability of the light source emitter 310 during the detection process, and preventing displacement due to vibration or other external forces, thereby ensuring the accuracy of the detection results. This mounting structure is simple and easy to operate, and can quickly complete the fixing of the end cap 420, thereby improving the assembly efficiency of the equipment.

[0036] As a further technical solution, the first adjustment frame 4100 has a damping hole 510 and a locking hole 520 connected to the damping hole 510, and also includes: a damping rod 530 is arranged on the second adjustment frame 4200, and the damping rod 530 is rotatably arranged in the damping hole 510; a limiting bolt 540 is arranged in the locking hole 520, and the limiting bolt 540 abuts against or cancels the abutment with the damping rod 530 after rotation, and the limiting bolt 540 is used to limit the second adjustment frame 4200 from rotating along the first adjustment frame 4100.

[0037] In this embodiment, the cooperation of the damping hole 510 and the damping rod 530 provides a certain damping for the rotation of the second adjustment frame 4200 relative to the first adjustment frame 4100, making the rotation process more stable and controllable, and avoiding sudden large-scale rotation causing detection position deviation. The limit bolt 540 in the locking hole 520 can abut against the damping rod 530 when necessary to limit the rotation of the second adjustment frame 4200, thereby fixing the position of the second adjustment frame 4200, ensuring that the detection member 4500 can remain stable after being adjusted to a suitable position, and improving the accuracy and reliability of the detection. This damping and limiting design allows the rotation angle and position to be accurately controlled when adjusting the position of the detection member 4500, and can be effectively locked after the adjustment is completed, to meet different steel belt 110 position detection requirements. The structure is simple and easy to operate. The rotation of the second adjustment frame 4200 can be limited by rotating the limit bolt 540, which improves the convenience and efficiency of the device. It helps to reduce the accidental rotation of the second adjustment frame 4200 caused by vibration or external force interference, and ensures the stability and continuity of the detection.

[0038] As a further technical solution, the axis of the damping hole 510 is perpendicular to the axis of the locking hole 520 .

[0039] In this embodiment, the design that the axis of the damping hole 510 is perpendicular to the axis of the locking hole 520 enables the limit bolt 540 to apply abutment force from a direction perpendicular to the damping rod 530, thereby more effectively limiting the rotation of the damping rod 530 and enhancing the stability and reliability of the limit. This vertical layout can make the structure more compact and save space, while reducing the mutual interference between components and improving the working efficiency of the entire adjustment mechanism. It is convenient for processing and manufacturing, reduces production costs, and also facilitates later maintenance and repair. The vertical axis design makes it more convenient to operate the limit bolt 540, and it can more intuitively judge whether the limit bolt 540 has effectively abutted against the damping rod 530, thereby ensuring that the second adjustment frame 4200 is accurately locked. It is conducive to improving the accuracy and stability of the entire sensor, so that the position of the detection member 4500 can be more accurately and reliably maintained when detecting the position of the steel belt 110.

[0040] As a further technical solution, the second adjustment frame 4200 , the third adjustment frame 4300 , and the fourth adjustment frame 4400 rotate along the X-axis, Y-axis, and Z-axis directions respectively.

[0041] In this embodiment, the second adjustment frame 4200, the third adjustment frame 4300 and the fourth adjustment frame 4400 rotate along the X, Y and Z axis directions respectively, realizing the full range adjustment of the detection member 4500 in three-dimensional space, and being able to more flexibly and accurately locate the position of the detection member 4500 to adapt to the steel belt 110 of different shapes, positions and angles, and ensure the accuracy and comprehensiveness of the detection. The rotation adjustment along different axis directions increases the adaptability of the detection, can cope with various complex steel belt 110 conveying conditions and installation environments, and improves the versatility of the sensor under different working conditions. This multi-axis adjustment method enables the detection member 4500 to quickly find the best detection angle and position, reduces the detection error, and improves the detection efficiency. It is helpful to compensate in time through the rotation of the adjustment frame when there is a slight change or deviation in the position of the steel belt 110, so as to maintain a stable and reliable detection effect.

[0042] As a further technical solution, the rotation and locking forms of the third adjustment frame 4300 and the fourth adjustment frame 4400 are the same as the rotation and locking forms of the second adjustment frame 4200 .

[0043] In this embodiment, the third adjustment frame 4300 and the fourth adjustment frame 4400 adopt the same rotation and locking form as the second adjustment frame 4200, which ensures the consistency and standardization of the entire adjustment system and facilitates operation and maintenance. The same rotation and locking form reduces the types and complexity of parts, reduces production costs and inventory management difficulties. During use, the operator only needs to be familiar with one adjustment and locking method to operate all adjustment frames, which improves work efficiency and convenience of operation.

[0044] 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 preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A sensor for detecting the position of a steel strip, used for detecting the conveying position of a steel strip (110) during conveying, characterized in that: include: Frame (210); a light source emitter (310), arranged on the frame (210), the light source emitter (310) being located below the steel strip (110), and the light source emitter (310) being used to emit light; A first adjustment frame (4100) detachably arranged on the frame body (210); A second adjustment frame (4200) is rotatably disposed on the first adjustment frame (4100); A third adjustment frame (4300) is rotatably arranged on the second adjustment frame (4200); the second adjustment frame (4200) and the third adjustment frame (4300) have different rotation directions; a fourth adjustment frame (4400) rotatably arranged on the third adjustment frame (4300), the rotation direction of the fourth adjustment frame (4400) being different from the rotation directions of the third adjustment frame (4300) and the second adjustment frame (4200); A detection member (4500) is arranged on the fourth adjustment frame (4400), the detection member (4500) is located above the steel belt (110), and the detection member (4500) is used to detect light emitted by the light source emitter (310) and not blocked by the steel belt (110).

2. A sensor for detecting the position of a steel strip according to claim 1, characterized in that: The light source emitter (310) comprises: The outer shell (311) has a protective space (312), the top of the protective space (312) has an opening (313), and the inner part of the outer shell (311) has a first slide groove (314) and a second slide groove (315); A circuit board (3141) is slidably disposed in the first sliding groove (314); A reflector (3151) is U-shaped and is slidably disposed in the second slide groove (315); the reflector (3151) is located above the circuit board (3141); There are a plurality of LED lamps (3152) arranged in an array on the reflective plate (3151); the reflective plate (3151) is used to reflect light emitted by the plurality of LED lamps (3152).

3. A sensor for detecting the position of a steel strip according to claim 2, characterized in that: The opening (313) is provided with a third sliding groove (316), and a protective plate (3161) is slidably arranged in the third sliding groove (316). The protective plate (3161) opens or closes the opening (313) after sliding. The protective plate (3161) is made of a light-transmitting material, and is used to protect the reflective plate (3151) in the housing (311).

4. A sensor for detecting the position of a steel strip according to claim 2, characterized in that: Also includes: A light homogenizing plate (3153) is slidably arranged on the reflective plate (3151); the light homogenizing plate (3153) is located above the plurality of LED lamps (3152); the light homogenizing plate (3153) is used to refract light emitted by the plurality of LED lamps (3152).

5. A sensor for detecting the position of a steel strip according to claim 2, characterized in that: The housing (311) has a plurality of screw holes (410) at both ends and further comprises: There are two sealing heads (420) which are detachably arranged at two ends of the shell (311); the two sealing heads (420) have a plurality of through holes (430); the positions of the through holes (430) and the screw holes (410) correspond; the sealing heads (420) are used to seal the protection space (312); A first mounting bolt (440) is detachably arranged on the screw hole (410); the first mounting bolt (440) passes through the through hole (430) and is threadably engaged with the screw hole (410).

6. A sensor for detecting the position of a steel strip according to claim 5, characterized in that: Also includes: A mounting plate (450) disposed on the sealing head (420), wherein the mounting plate (450) has a mounting groove (451); A second mounting bolt (460) is detachably disposed in the mounting groove (451), and the second mounting bolt (460) is used to fix the sealing head (420) on the frame (210).

7. A sensor for detecting the position of a steel strip according to claim 1, characterized in that: The first adjustment frame (4100) has a damping hole (510) and a locking hole (520) connected to the damping hole (510), and further comprises: A damping rod (530) is arranged at one end of the second adjustment frame (4200), and the damping rod (530) is rotatably arranged in the damping hole (510); A limiting bolt (540) is disposed in the locking hole (520); after the limiting bolt (540) is rotated, it abuts against or cancels the abutment with the damping rod (530); after the limiting bolt (540) abuts against the damping rod (530), it is used to limit the second adjustment frame (4200) from rotating along the first adjustment frame (4100).

8. The sensor for detecting the position of a steel strip according to claim 7, characterized in that: The axis of the damping hole (510) is perpendicular to the axis of the locking hole (520).

9. A sensor for detecting the position of a steel strip according to claim 1, characterized in that: The second adjustment frame (4200), the third adjustment frame (4300) and the fourth adjustment frame (4400) rotate in the directions of the X, Y and Z axes respectively.

10. A sensor for detecting the position of a steel strip according to claim 8, characterized in that: The rotation and locking forms of the third adjustment frame (4300) and the fourth adjustment frame (4400) are the same as the rotation and locking forms of the second adjustment frame (4200).

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