Anti-winding guide device for hot-rolled narrow strip steel

Abstract

The utility model provides a kind of hot-rolled narrow strip steel anti-winding guide and guard device, it includes pedestal, guide and guard plate, pre-tight spring and limit seat, the pedestal has the near machine end close to rolling mill exit and the far machine end away from rolling mill exit;The guide and guard plate is located above the pedestal, one end articulates the near machine end, and the facing surface of the guide and guard plate and the pedestal has gap;The pre-tight spring is located at the far machine end, and its top end is connected with the guide and guard plate;The limit seat is located at the far machine end, when the guide and guard plate touches the top end of the limit seat, the pre-tight spring is in tensile state.The utility model changes the rigid structure of traditional guide and guard plate into passive lifting hinged type buffer structure, which can effectively solve the problem of steel stacking and roll winding caused by hot-rolled narrow strip steel head lifting, ensure production safety, production efficiency and equipment safety;In addition, through the cooperation of guide slide bar, position detector and other devices, the head lifting frequency and degree of the rolled piece can be obtained to evaluate and optimize the rolling process.

Description

Technical Field

[0001] This utility model relates to the field of steel rolling equipment technology, and in particular to a hot-rolled narrow strip steel anti-tangling guide device. Background Technology

[0002] Guide plates are devices installed before and after the roll pass during the rolling process of profile steel to help the rolled workpiece enter or exit the roll pass accurately and stably in a predetermined direction and state.

[0003] In the production of hot-rolled narrow strip steel, especially when rolling thin-gauge steel (such as steel with a thickness of less than 2.5 mm), high hardness, or high alloy content, the head of the strip rolled from the mill is prone to "upward curling" or "downward curling" due to factors such as temperature, speed, and plasticity. However, most current guide plates are fixed rigid structures. When the strip suddenly exhibits such abnormal head shape, it cannot pass smoothly through the gap between the guide plate and the base, and subsequently accumulates between the mill exit and the guide plate. In severe cases, roll entanglement accidents can occur. Once these accidents happen, the machine must be stopped immediately for handling. Workers need to use an oxygen gun to burn off and remove the entangled steel strip, which not only causes production interruption and generates scrap, but may also damage expensive rolls and guide devices, and even pose safety hazards. Utility Model Content

[0004] The purpose of this invention is to provide a hot-rolled narrow strip steel anti-tangling guide device to solve the problems mentioned above.

[0005] The technical solution adopted in this utility model is: a hot-rolled narrow strip steel anti-entanglement guide device, which includes:

[0006] A base having a near-mill end close to the mill exit and a far-mill end away from the mill exit;

[0007] A guide plate is disposed above the base, one end of which is hinged to the near end, and the opposing surfaces of the guide plate and the base have a gap.

[0008] A preload spring is provided at the remote end, and its top end is connected to the guide plate;

[0009] A limiting seat is provided at the remote end. When the guide plate contacts the top of the limiting seat, the preload spring is in a stretched state.

[0010] Preferably, the gap between the guide plate and the near-machine end is greater than the gap between the guide plate and the far-machine end.

[0011] Preferably, the guide plate has a first mounting seat and a connecting ear plate on its wide side end. The opposite ends of the first mounting seat and the connecting ear plate are respectively fixedly connected to the near end and the guide plate, and the near ends are connected by a hinge shaft.

[0012] Preferably, the guide plate has a second mounting seat on its wide side end, the bottom end of the second mounting seat is fixedly connected to the remote end, and the side end is provided with an arc-shaped guide groove, the axis of the arc-shaped guide groove being parallel to the hinge axis; the guide plate is movably connected to the arc-shaped guide groove through a guide slide rod.

[0013] Preferably, the arc-shaped groove is provided with a plurality of position detectors, each of which has a different height, for detecting the position information of the guide slide rod.

[0014] Preferably, the top of the remote end is provided with a vertical threaded groove, and the bottom of the limiting seat is provided with a height adjustment screw, which is threaded to the vertical threaded groove.

[0015] Preferably, the surface of the guide plate facing the base is curved.

[0016] The beneficial effects of this invention are as follows: This device replaces the traditional rigid structure with a fixed guide plate with a passively lifting hinged buffer structure, which effectively solves the problems of steel piling and roll wrapping caused by the curling of hot-rolled narrow strip steel, ensuring production safety, production efficiency, and equipment safety. Furthermore, the frequency and degree of curling of the rolled piece can be obtained through the cooperation of guide slides, position detectors, etc., to evaluate and optimize the rolling process. Attached Figure Description

[0017] Figure 1 This is a front view of an embodiment of the present utility model;

[0018] Figure 2 This is a side view of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of the arc-shaped guide groove in an embodiment of this utility model.

[0020] In the picture:

[0021] 1. Base; 1-1. Near-machine end; 1-2. Far-machine end; 1-3. Vertical threaded groove;

[0022] 2. Guide plate;

[0023] 3. Preload spring;

[0024] 4. Limiting seat;

[0025] 5. First mounting base;

[0026] 6. Connect the ear plates;

[0027] 7. Hinge shaft;

[0028] 8. Second mounting base; 8-1. Arc-shaped guide groove;

[0029] 9. Guide slide bar;

[0030] 10. Position detector;

[0031] 11. Adjust the height of the screw. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0033] In the description of the embodiments of this utility model, it should be understood that the terms "top," "bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, it should be noted that unless otherwise expressly specified and limited, the terms "set" and "connected" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this utility model through specific circumstances.

[0034] Reference Appendix Figure 1-3 This utility model provides a hot-rolled narrow strip steel anti-tangling guide device, which includes a base 1, a guide plate 2, a preload spring 3, and a limiting seat 4. All of the above structural components are located on the mill exit side. The base 1 has a near-mill end 1-1 close to the mill exit and a far-mill end 1-2 far from the mill exit. The guide plate 2 is located above the base 1, with one end hinged to the near-mill end 1-1, and there is a gap between the facing surfaces of the guide plate 2 and the base 1. The preload spring 3 is located at the far-mill end 1-2, and its top end is connected to the guide plate 2. The limiting seat 4 is located at the far-mill end 1-2. When the guide plate 2 touches the top end of the limiting seat 4, the preload spring 3 is in a stretched state.

[0035] In the above-mentioned device, the gap between the opposing surfaces of the guide plate 2 and the base 1 serves as the conveying channel for the rolled piece output by the mill. When the rolled piece is in normal condition, the guide plate 2 is pressed against the top of the limiting seat 4 by its own weight and the pre-tensioning action of the pre-tensioning spring 3. When the rolled piece tilts upwards, the head of the rolled piece will impact the guide plate 2. When the impact force overcomes the self-weight of the guide plate 2 and the pre-tensioning force of the pre-tensioning spring 3, the end of the guide plate 2 away from the mill outlet will rotate upwards, making the gap between the guide plate 2 and the far end 1-2 of the mill larger, providing a larger conveying channel for the tilted rolled piece. After the head of the rolled piece is successfully output, the guide plate 2 loses the external impact and, under the pull of its own weight and the pre-tensioning spring 3, gradually falls and approaches and touches the limiting seat 4, returning to the normal working position.

[0036] By adopting the above technical solution, the rigid structure of the traditional guide plate 2 is changed to a hinged buffer structure that can be passively lifted, which can effectively solve the problems of steel piling and roll wrapping caused by the curling of hot-rolled narrow strip steel, and ensure production safety, production efficiency and equipment safety.

[0037] The aforementioned preload spring can be a heavy-duty disc spring or a cylindrical helical spring, which has the advantage of being able to withstand high temperatures and having stable force-displacement characteristics. Although components such as the preload spring and the limiting seat are located between the guide plate and the base, they should be placed as close as possible to the edge of the guide plate and the base in the width direction. Generally speaking, the width of the guide plate is much larger than the width of the rolled piece, and the rolled piece generally does not experience excessive lateral displacement. Therefore, by properly configuring the position of the preload spring and the limiting seat, contact between the rolled piece and the preload spring and the limiting seat can be avoided.

[0038] Since the strip closer to the mill exit has slightly less stability in position and state, this embodiment makes the following configuration optimization: the gap between the guide plate 2 and the near end 1-1 is greater than the gap between the guide plate 2 and the far end 1-2, so that the strip with more fluctuations or tilting can smoothly enter the space between the guide plate 2 and the base 1, and be gradually and smoothly discharged. When the strip tilting is severe, after entering the space between the guide plate 2 and the base 1, it can be gradually impacted from the bottom surface of the guide plate 2 to facilitate the rotation and lifting of the guide plate 2.

[0039] Furthermore, the surface of the guide plate 2 facing the base 1 is configured as a curved surface to reduce friction with the strip steel.

[0040] Reference Appendix Figure 2 The guide plate 2 has a first mounting base 5 and a connecting ear plate 6 on its wide side. The opposite ends of the first mounting base 5 and the connecting ear plate 6 are fixedly connected to the near end 1-1 and the guide plate 2, respectively, and the near ends are connected by a hinge shaft 7. The hinge shaft 7 serves as a rotation support point for the guide plate 2, providing stable support and a certain degree of rotational freedom for the guide plate 2.

[0041] The guide plate 2 has a second mounting seat 8 on its wide side end. The bottom end of the second mounting seat 8 is fixedly connected to the remote end 1-2, and the side end has an arc-shaped guide groove 8-1. The axis of the arc-shaped guide groove 8-1 is parallel to the hinge shaft 7. The guide plate 2 is movably connected to the arc-shaped guide groove 8-1 through a guide slide rod 9. When the upturned steel strip impacts the guide plate 2, causing the guide plate 2 to rotate and rise, the guide slide rod 9 and the arc-shaped guide groove 8-1 can restrict the rotation and rising direction and path of the guide plate 2, which is beneficial to the stability and flexibility of the device structure and the smoothness of the guide plate 2's subsequent reset.

[0042] Furthermore, the arc-shaped groove is equipped with several position detectors 10, each at a different height, to detect the position information of the guide slide rod 9. In actual production, each position detector 10 is connected to the rolling mill's industrial control system to detect and record the number of times the guide slide rod 9 passes through the position detectors 10 at different heights. This maps the frequency and amplitude of the rotation and lifting of the guide plate 2, thereby displaying the frequency and extent of abnormalities occurring at the head of the rolled piece. This allows operators to adjust the rolling process in a timely manner based on the above information, preventing larger production accidents from occurring.

[0043] The aforementioned position detector 10 can employ existing devices, such as through-beam photoelectric switches. The transmitting and receiving ends of each through-beam photoelectric switch are respectively set on the two side walls of the arc-shaped guide groove 8-1. When the guide slide rod 9 passes through this location, the through-beam photoelectric switch generates a sensing signal, thereby detecting and recording the position information of the guide slide rod 9.

[0044] In this embodiment, the limiting seat 4 is responsible for controlling the distance between the guide plate 2 and the base 1, and for preventing the guide plate 2 from falling excessively due to its own weight, thus preventing the preload spring 3 from being over-compressed. Based on the actual effect of its use, the structure of this embodiment has been optimized as follows: the top of the remote end 1-2 of the base 1 is provided with a vertical threaded groove, and the bottom end of the limiting seat 4 is provided with a height adjustment screw 11, which is threaded into the vertical threaded groove. By screwing the height adjustment screw 11 into or out of the vertical threaded groove, the top height of the limiting seat 4 can be changed, thereby changing the distance between the facing surfaces of the guide plate 2 and the base 1 to adapt to the guiding output requirements of rolled pieces of different thicknesses.

[0045] Compared with existing technologies, this invention has at least the following advantages: This device replaces the traditional rigid structure of the fixed guide plate 2 with a passively liftable hinged buffer structure, effectively solving the problems of steel piling and roll wrapping caused by the curling of hot-rolled narrow strip steel, ensuring production safety, production efficiency, and equipment safety. Furthermore, the frequency and degree of curling of the rolled piece can be obtained through the cooperation of the guide slide rod 9, position detector 10, etc., for the purpose of evaluating and optimizing the rolling process.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hot-rolled narrow strip steel anti-tangling guide device, characterized in that, include: A base having a near-mill end close to the mill exit and a far-mill end away from the mill exit; A guide plate is disposed above the base, one end of which is hinged to the near end, and the opposing surfaces of the guide plate and the base have a gap. A preload spring is provided at the remote end, and its top end is connected to the guide plate; A limiting seat is provided at the remote end. When the guide plate touches the top of the limiting seat, the preload spring is in a stretched state.

2. The anti-tangling guide device for hot-rolled narrow strip steel according to claim 1, characterized in that, The gap between the guide plate and the near-machine end is greater than the gap between the guide plate and the far-machine end.

3. The anti-tangling guide device for hot-rolled narrow strip steel according to claim 1 or 2, characterized in that, The guide plate has a first mounting base and a connecting ear plate on its wide side. The opposite ends of the first mounting base and the connecting ear plate are respectively fixedly connected to the near end and the guide plate, and the near ends are connected by a hinge shaft.

4. The anti-tangling guide device for hot-rolled narrow strip steel according to claim 3, characterized in that, The guide plate has a second mounting seat on its wide side end. The bottom end of the second mounting seat is fixedly connected to the remote end. The side end has an arc-shaped guide groove, the axis of which is parallel to the hinge axis. The guide plate is movably connected to the arc-shaped guide groove via a guide slide rod.

5. The anti-tangling guide device for hot-rolled narrow strip steel according to claim 4, characterized in that, The arc-shaped guide groove is equipped with several position detectors, each with a different height, to detect the position information of the guide slide rod.

6. The anti-tangling guide device for hot-rolled narrow strip steel according to any one of claims 1-2 and 4-5, characterized in that, The top of the remote end is provided with a vertical threaded groove, and the bottom of the limiting seat is provided with a height adjustment screw, which is threaded to the vertical threaded groove.

7. The anti-tangling guide device for hot-rolled narrow strip steel according to claim 6, characterized in that, The surface of the guide plate facing the base is curved.

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