An anti-tangling guide plate and a cold continuous rolling mill

Abstract

This invention relates to the field of metallurgical rolling equipment technology, specifically to an anti-tangling guide plate and a cold continuous rolling mill, particularly applicable to the warm rolling of high-grade silicon steel. It includes a guide plate body, a shovel head body, a sealing isolation component, a flow guiding structure, and a gap fine-tuning mechanism. The shovel head body is connected to the lower end of the guide plate body. The sealing isolation component is located on the shovel head body, sealing the gap between the shovel head body and the work roll. The flow guiding structure is located on the guide plate body and the shovel head body, guiding the cooling emulsion to be directionally discharged to the outside of the strip. The gap fine-tuning mechanism is assembled on the guide plate body, driving the guide plate body to move and precisely controlling the gap between the guide plate body and the work roll. This invention achieves full-process isolation from receiving the cooling emulsion and sealing the gap to directional drainage, maintaining the strip within the warm rolling process temperature window of 100℃ to 200℃ under the complex conditions of six-stand six-roll cold continuous rolling, effectively improving the rolling performance of high-grade silicon steel and reducing strip breakage defects.

Description

Technical Field

[0001] This invention relates to the field of metallurgical rolling equipment technology, specifically to an anti-winding guide plate and a cold continuous rolling mill, which is particularly applicable to the warm rolling of high-grade silicon steel. Background Technology

[0002] High-grade silicon steel is an indispensable core soft magnetic material in the fields of new energy vehicles and power transmission and transformation. Non-oriented silicon steel is mainly used in the manufacture of drive motors for new energy vehicles, while oriented silicon steel is widely used as the core of power transformers. With the rapid development of China's new energy industry, the market demand for high-grade silicon steel continues to rise. High-grade silicon steel is characterized by its thinness, hardness, and brittleness, making it highly susceptible to strip breakage during rolling. To improve its rolling performance and avoid strip breakage, the industry generally adopts a warm rolling process, requiring the strip to maintain a process temperature of 100℃~200℃ within the rolling range. This necessitates strictly preventing the cooling emulsion from directly contacting the strip to ensure stable warm rolling conditions.

[0003] The six-stand, six-roll cold continuous rolling mill is the mainstream equipment for the large-scale production of high-grade silicon steel at present. The mill adopts a small-diameter work roll configuration and integrates the work roll shifting function, which can effectively ensure the shape and dimensional accuracy of the strip while meeting the rolling load. Existing single-stand six-roll mills typically equip anti-winding guides on the inlet and outlet sides of the work rolls. However, when applied to a six-stand six-roll cold continuous rolling mill, significant shortcomings remain: the roll structure and cooling system layout of this mill are complex, the volume of cooling emulsion sprayed is large and the flow direction is complex, but the internal operating space of a six-roll mill is small, making it difficult to compactly integrate conventional roll cooling, strip lubrication, and emulsion barrier devices. This results in the cooling emulsion easily leaking from the gap between the guide and the work roll to the strip surface. Moreover, the process requires the gap between the anti-winding guide shovel and the work roll to be controlled within 5mm. Insufficient gap adjustment precision can easily lead to seal failure at the junction of the guide and the roll, causing the cooling emulsion to leak and contact the strip, disrupting the predetermined warm rolling temperature field, and failing to meet the process requirements for warm rolling of high-grade silicon steel. Summary of the Invention

[0004] The present invention addresses the problem that cooling emulsion leaks from the gap between the anti-winding guide plate and the work roll to the surface of the strip, disrupting the temperature field of the warm rolling process and failing to meet the requirements of the warm rolling process for high-grade silicon steel.

[0005] To address the above problems, the present invention provides an anti-tangling guide plate and a cold continuous rolling mill.

[0006] On one hand, the present invention provides an anti-tangling guide plate, comprising: The guide plate body is a curved slope structure with a steep upper part and a gentle lower part; The shovel head body is connected to the lower end of the guide plate body, and the front end of the shovel head body has an integrally extended guide lip. A sealing isolation element is provided on the shovel head body and is used to seal the gap between the shovel head body and the working roller; A flow guiding structure is provided on the guide plate body and the shovel head body to guide the cooling emulsion to be directionally discharged to the outside of the strip steel; the flow guiding structure includes a flow guiding cavity, which extends along both sides of the guide plate body to both sides of the shovel head body to form a continuous drainage channel from top to bottom. A gap adjustment mechanism is mounted on the guide plate body and is used to drive the guide plate body to move and precisely adjust the gap between the guide plate body and the work roller.

[0007] Preferably, the sealing isolation component includes a sealing rubber plate and a second blowing nozzle assembly; the sealing rubber plate is disposed on the shovel head body, and its edge is raised upward to fit the outer peripheral surface of the work roller; the second blowing nozzle assembly is disposed between the sealing rubber plate and the guide lip, and is used to spray airflow toward the gap between the guide lip and the work roller to form an air curtain to block the cooling emulsion from dripping onto the strip steel.

[0008] Preferably, the guide plate body is provided with a horizontal reinforcing plate and a vertical reinforcing plate, and liquid passage holes are provided on the horizontal reinforcing plate and the vertical reinforcing plate. The liquid passage holes are used to allow the cooling emulsion flowing down the guide plate body to pass through and flow into the guide cavities on both sides, and then be discharged through the lower end of the guide cavities.

[0009] Preferably, the flow guiding structure further includes a first liquid guiding groove and a second liquid guiding groove extending along the axial direction of the working roller; the first liquid guiding groove is opened on the side of the shovel head body near the guide plate body, and is used to introduce the cooling emulsion into the flow guiding cavity; the second liquid guiding groove is opened on the guide lip, and is used to receive and discharge residual cooling emulsion.

[0010] Preferably, it further includes a guide plate driving mechanism, which includes a cylinder assembly and a slide rail assembly; the driving end of the cylinder assembly is hinged to the upper end of the guide plate body, the slide rail assembly is disposed on both sides of the guide plate body, and the guide plate body is equipped with a roller assembly that slides with the slide rail assembly; the extension and retraction of the cylinder assembly can drive the guide plate body to move along the slide rail assembly, thereby realizing the large stroke position adjustment of the shovel head body relative to the working roller.

[0011] Preferably, the gap fine-tuning mechanism includes a hydraulic motor with an encoder, a drive shaft, and a pair of screw jacks; the drive shaft is arranged along the axial direction of the work roller, and the screw jacks are symmetrically mounted at both ends of the drive shaft; the hydraulic motor drives the drive shaft to synchronously drive the pair of screw jacks to operate, converting rotational motion into linear displacement; the output ends of the pair of screw jacks abut against the lower end of the guide plate body, and high-precision fine-tuning of the gap between the shovel head body and the work roller is achieved through synchronous extension and retraction.

[0012] Preferably, the system further includes a roller body spray cooling assembly, which includes an emulsion spray pipe and multiple inlet pipes. The emulsion spray pipe is arranged parallel to the axial direction of the work roller, and the multiple inlet pipes are connected to the guide plate body through a pipe bracket. The emulsion spray pipe is equipped with nozzle assemblies facing the work roller for spraying and cooling the work roller.

[0013] Preferably, an air purging beam is provided below the emulsion spray pipe, and a first spray nozzle assembly is configured on the air purging beam. The first spray nozzle assembly blows air toward the gap between the work roll and the intermediate roll to prevent the cooling emulsion under different external working conditions from flowing into each other.

[0014] Preferably, the bottom of the shovel head body is provided with an emulsion nozzle assembly, which includes multiple sets of nozzles arranged along the axial direction of the work roll for spraying lubricating emulsion onto the strip surface to achieve rolling lubrication.

[0015] On the other hand, the present invention also provides a cold continuous rolling mill unit, including multiple sets of six-roll mill stands, wherein the above-mentioned anti-tangling guide plate is installed on the inlet side and / or outlet side of each mill stand.

[0016] The beneficial effects of this invention are: This invention provides an anti-tangling guide plate. During warm rolling, a large amount of cooling emulsion generated from cooling the work rolls flows downwards through the guide plate body. The guide plate body employs a curved slope structure with a steeper top and gentler bottom, orderly guiding the emulsion into the guiding cavity and preventing splashing onto the strip surface due to excessive flow velocity. Simultaneously, the guide lip of the guide plate body, close to the work roll surface, forms a physical barrier, intercepting the cooling emulsion on one side of the work roll. For a small amount of residual cooling emulsion attempting to seep in through the gap between the shovel head body and the work roll, a sealing isolator effectively seals this gap, completely cutting off the path of leakage into the strip. The intercepted cooling emulsion enters the guiding structure and flows downwards through the guiding cavity along both sides of the guide plate body, forming a continuous, directional drainage channel. This guides the cooling emulsion to the outside of both sides of the strip, ensuring that the cooling emulsion does not contact the strip surface throughout the entire process. The stable realization of the aforementioned sealing, blocking, and drainage functions relies on the high-precision gap adjustment support provided by the gap fine-tuning mechanism. The gap fine-tuning mechanism of this invention can precisely control the assembly gap between the shovel head body and the working roller, keeping the gap stably controlled within the allowable range of the process, so that the sealing rubber plate of the sealing isolation component always maintains uniform contact with the outer periphery of the working roller; it can prevent excessive gap from causing sealing gaps and leakage of cooling emulsion, and it can also avoid excessive gap from causing the shovel head body to rub against and wear the working roller.

[0017] In summary, the anti-winding guide plate of this invention, while realizing the function of anti-winding rolls in steel rolling, constructs a complete process from receiving cooling emulsion and sealing gaps to directional drainage. Under the complex operating conditions of a six-stand, six-roll cold continuous rolling mill, it can reliably maintain the strip steel within the warm rolling process temperature window of 100℃ to 200℃, ensuring the stable execution of the warm rolling process for high-grade silicon steel, thereby effectively improving the rolling performance of silicon steel and reducing strip breakage defects. The advantages of the cold rolling mill unit of the present invention compared with the prior art are the same as those of the anti-winding guide plate described above, and will not be repeated here. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an anti-tangling guide plate according to an embodiment of the present invention; Figure 2 For this Figure 1 A magnified view of a portion of the image; Figure 3 This is a schematic diagram of the working state of the shovel head body in one embodiment of the present invention; Figure 4 This is a schematic diagram of the shovel head body in one embodiment of the present invention; Figure 5 This is another axial side view of the shovel head body in one embodiment of the present invention; Figure 6 This is a schematic diagram of an anti-tangling guide plate according to another embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the guide plate body and the flow guiding cavity in one embodiment of the present invention; Figure 8 This is a schematic diagram of the gap fine-tuning mechanism in one embodiment of the present invention; Figure 9 This is a schematic diagram showing the fixed installation of liquid inlet pipe I, liquid inlet pipe II, air inlet pipe I, and air inlet pipe II on the guide plate body in one embodiment of the present invention; Figure 10 This is a schematic diagram of the structure of liquid inlet pipe I, liquid inlet pipe II, air inlet pipe I and air inlet pipe II in one embodiment of the present invention.

[0019] Wherein: 1-Guide plate body; 11-Transverse reinforcing plate; 12-Vertical reinforcing plate; 2-Scrap head body; 21-Guide lip; 3-Sealing isolation component; 31-Sealing rubber plate; 32-Second blowing nozzle assembly; 321-Air inlet pipe I; 4-Flow guiding structure; 41-Flow guiding cavity; 42-First liquid guiding groove; 43-Second liquid guiding groove; 5-Guide plate drive mechanism; 51-Cylinder assembly; 52-Slide rail assembly; 53-Roller assembly; 6-Gap fine adjustment mechanism; 60-Output end; 61-Hydraulic motor; 62-Drive shaft; 63-Screw jack; 7-Roller body spray cooling assembly; 71-Emulsion spray pipe; 72-Liquid inlet pipe I; 8-Air blowing beam; 81-First spray nozzle assembly; 811-Air inlet pipe II; 9-Emulsion nozzle assembly; 91-Liquid inlet pipe II; 01-Working roller. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0021] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0022] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0023] To address the problems existing in the aforementioned related technologies, the present invention provides an anti-tangling guide plate and a cold continuous rolling mill, which will be described in detail below with reference to specific embodiments.

[0024] See Figure 1 , Figure 2 and Figure 3 As shown, in one aspect, an embodiment of the present invention provides an anti-tangling guide plate, including a guide plate body 1, a shovel head body 2, a sealing isolation component 3, a flow guiding structure 4, and a gap fine adjustment mechanism 6. The guide plate body 1 has a curved slope structure with a steep upper part and a gentle lower part. The shovel head body 2 is connected to the lower end of the guide plate body 1, and a guide lip 21 is integrally extended from the front end of the shovel head body 2. The sealing isolation component 3 is disposed on the shovel head body 2 and is used to seal the gap between the shovel head body 2 and the working roller 01. The flow guiding structure 4 is disposed on the guide plate body 1 and the shovel head body 2 and is used to guide the cooling emulsion to be directionally discharged to the outside of the strip steel. The flow guiding structure 4 includes a flow guiding cavity 41, which extends along both sides of the guide plate body 1 to both sides of the shovel head body 2, forming a continuous drainage channel that runs from top to bottom. The gap fine adjustment mechanism 6 is assembled on the guide plate body 1 and is used to drive the guide plate body 1 to move and precisely adjust the gap between the guide plate body 1 and the working roller 01.

[0025] It should be noted that if strip breakage occurs during the rolling process, the guide lip 21 extending integrally from the front end of the shovel head body 2 is close to the surface of the work roll 01, which can promptly guide the broken strip away from the work roll 01, preventing the strip from wrapping around the roll and causing equipment damage, thus achieving the basic anti-winding roll protection function.

[0026] Under normal warm rolling conditions, a large amount of cooling emulsion generated during the cooling of the work roll 01 flows from top to bottom, washing over the guide plate body 1. The guide plate body 1 adopts a curved slope structure with a steep upper section and a gentle lower section. The steep upper section accelerates the reception of the cooling emulsion and guides it to flow downwards quickly, preventing the liquid from accumulating and overflowing on the surface of the guide plate body 1. The gentle lower section smoothly transitions, orderly guiding the cooling emulsion into the guide cavity 41, preventing the liquid from splashing onto the strip surface due to excessive flow velocity.

[0027] The guide lip 21, close to the surface of the work roll 01, forms a physical barrier, intercepting the cooling emulsion on one side of the work roll 01. For any residual cooling emulsion attempting to seep through the gap between the shovel head body 2 and the work roll 01, the sealing isolator 3 effectively seals the gap, completely cutting off the path of leakage of the cooling emulsion into the strip. The intercepted cooling emulsion enters the guide structure 4, and is discharged from top to bottom along both sides of the guide plate body 1 through the guide cavity 41, forming a continuous and directional drainage channel that guides the emulsion to the outside of both sides of the strip, ensuring that the cooling emulsion does not contact the surface of the strip throughout the entire process.

[0028] The stable realization of the above-mentioned sealing and drainage functions relies on the high-precision gap adjustment support provided by the gap fine adjustment mechanism 6. The gap fine adjustment mechanism 6 can precisely control the assembly gap between the shovel head body 2 and the working roller 01, and stably control the gap within the allowable range of the process, so that the sealing rubber plate 31 of the sealing isolation component 3 always maintains uniform contact with the outer periphery of the working roller 01; it can prevent the gap from being too large, causing sealing gaps and emulsion leakage, and it can also avoid the gap from being too small, causing the shovel head body 2 to rub against and wear the working roller 01.

[0029] In summary, the anti-winding guide plate of the present invention, while realizing the function of anti-winding roll in steel rolling, constructs a complete process from receiving cooling emulsion, sealing gaps to directional drainage. Under the complex working conditions of a six-stand, six-roll cold continuous rolling mill, it can reliably maintain the strip steel within the warm rolling process temperature window of 100℃ to 200℃, ensuring the stable execution of the warm rolling process for high-grade silicon steel, thereby effectively improving the rolling performance of silicon steel and reducing strip breakage defects.

[0030] See Figure 4 and Figure 5 As shown, in one embodiment of the present invention, the sealing isolation member 3 includes a sealing rubber plate 31 and a second blowing nozzle assembly 32; the sealing rubber plate 31 is disposed on the shovel head body 2, and its edge is raised upward to fit the outer peripheral surface of the work roller 01; the second blowing nozzle assembly 32 is disposed between the sealing rubber plate 31 and the guide lip 21, and is used to spray airflow toward the gap between the guide lip 21 and the work roller 01 to form an air curtain to block the cooling emulsion from dripping onto the strip steel.

[0031] Specifically, the sealing rubber plate 31 is assembled to the shovel head body 2 using a double-clamp clamping and fixing structure. The two clamps abut against the upper and lower sides of the sealing rubber plate 31 respectively, and the sealing rubber plate 31 is completely clamped between the two clamps. The two clamps are then fastened to the mounting groove of the shovel head body 2 by locking bolts. The sealing rubber plate 31 is made of elastic rubber, with its top bent upwards and protruding outwards after assembly. It can flexibly conform to the outer arc of the working roll 01 and compensate for the assembly gap between the shovel head body 2 and the working roll 01 by its own elasticity, forming a solid sealing barrier that directly prevents most of the cooling emulsion from seeping into the inner side of the roll gap. The air inlet pipe I 321 of the second blowing nozzle assembly 32 is fixedly installed on the guide plate body 1 by a pipe bracket. The second blowing nozzle assembly 32 is embedded in the middle groove between the guide lip 21 and the sealing rubber plate 31. During the warm rolling operation, high-pressure air is continuously sprayed obliquely from the second blowing nozzle assembly 32 towards the roll gap, forming a complete axial air curtain on the outside of the sealing rubber plate 31. A small amount of cooling emulsion droplets that pass through the sealing rubber plate 31 and are not completely intercepted will be blown back to the side of the roll body by the high-pressure airflow and will not drip down to the strip below.

[0032] The guide lip 21 is arranged below the second blow-off nozzle assembly 32 and at the front end of the shovel head body 2. A second liquid guide groove 43 is provided on the guide lip 21 along the axial direction of the working roller 01. The residual cooling emulsion that is not completely blown away by the air curtain formed by the second blow-off nozzle assembly 32 and falls onto the guide lip 21 will directly flow into the second liquid guide groove 43, flow along the axial direction of the groove to both ends of the shovel head body 1 and then be discharged outward.

[0033] See Figure 6 and Figure 7 As shown, in one embodiment of the present invention, the guide plate body 1 is provided with a horizontal reinforcing plate 11 and a vertical reinforcing plate 12, and liquid passage holes are provided on the horizontal reinforcing plate 11 and the vertical reinforcing plate 12. The liquid passage holes are used to allow the cooling emulsion flowing down along the guide plate body 1 to pass through and flow into the guide cavities 41 on both sides, and then be discharged through the lower end of the guide cavity 41.

[0034] It should be noted that the flow rate of the cooling emulsion sprayed on the roll body during the warm rolling of high-grade silicon steel is relatively large. The guide plate body 1 adopts a slope structure with a steep top and a gentle bottom to receive the falling cooling emulsion. The addition of staggered transverse reinforcing plates 11 and vertical reinforcing plates 12 can significantly improve the structural rigidity of the guide plate body 1, adapt to the assembly stress in the narrow space of the six-roll mill, avoid deformation and warping caused by long-term emulsion scouring and airflow impact, and ensure the stability of the assembly reference of the sealing and guiding structure. The horizontal reinforcing plates 11 and vertical reinforcing plates 12 are staggered to form a grid-like support frame. Through-holes in the plates prevent obstruction of the emulsion flow from top to bottom on the slope. Emulsion flowing along the slope of the guide plate body 1 can continuously flow downwards through the through-holes, preventing the formation of dead zones on the reinforcing plate surface. Through-holes in the grid-like support frame also guide the emulsion flow, causing it to collect in the guide cavities 41 on both sides of the guide plate body 1 before being discharged outwards. The discharge outlets are located on both sides of the strip steel, preventing dripping onto the strip. Therefore, this structure simultaneously provides structural reinforcement and full-area flow guidance, solving the problems of easy deformation and sealing failure of the guide plate body 1 under high-flow emulsion conditions, while ensuring complete collection and directional discharge of the emulsion, reducing the risk of emulsion accumulation and leakage in the roll gap area from upstream.

[0035] In one embodiment of the present invention, the flow guiding structure 4 further includes a first liquid guiding groove 42 and a second liquid guiding groove 43 extending axially along the working roller 01; the first liquid guiding groove 42 is opened on the side of the shovel head body 2 near the guide plate body 1, and is used to guide the cooling emulsion into the flow guiding cavity 41; the second liquid guiding groove 43 is opened on the guide lip 21, and is used to receive and discharge residual cooling emulsion.

[0036] It should be noted that the first liquid guiding groove 42 is arranged at the connection position between the shovel head body 2 and the guide plate body 1. It receives most of the cooling emulsion flowing down from the slope and liquid passage of the guide plate body 1. The groove runs through the entire length of the working roller 01, which can smoothly guide most of the cooling emulsion to the two side guide cavities 41 for concentrated discharge, eliminate the dead corner of liquid accumulation at the connection between the guide plate body 1 and the shovel head body 2, and prevent a large amount of cooling emulsion from overflowing into the roller gap.

[0037] The second liquid guide groove 43 is located on the bottom guide lip 21 and serves as a bottom liquid collection channel. It is specifically designed to collect the small amount of residual cooling emulsion that falls onto the guide lip 21 after being intercepted by the sealing rubber plate 31 and the second blow-off nozzle assembly 32. The residual liquid flows axially along the second liquid guide groove 43 to both ends of the shovel head body 2 and is finally discharged from both sides of the strip. This prevents the trace amount of cooling emulsion from accumulating on the guide lip 21 and dripping onto the surface of the strip, further ensuring the stable temperature field required for warm rolling.

[0038] In one embodiment of the present invention, a guide plate driving mechanism 5 is further included. The guide plate driving mechanism 5 includes a cylinder assembly 51 and a slide rail assembly 52. ​​The driving end of the cylinder assembly 51 is hinged to the upper end of the guide plate body 1. The slide rail assembly 52 is disposed on both sides of the guide plate body 1. The guide plate body 1 is equipped with a roller assembly 53 that slides with the slide rail assembly 52. ​​The extension and retraction of the cylinder assembly 51 can drive the guide plate body 1 to move along the slide rail assembly 52, thereby realizing the large stroke position adjustment of the shovel head body 2 relative to the working roller 01.

[0039] It should be noted that, in this embodiment, by setting the guide plate drive mechanism 5, a large-stroke rapid position adjustment of the shovel head body 2 relative to the working roller 01 is achieved, which meets the process requirements of the anti-tangling guide plate retracting as a whole and providing sufficient operating space during roller changing operations.

[0040] Specifically, when the work roll 01 needs to be replaced, the cylinder assembly 51 extends or retracts, driving the guide plate body 1 to move along the slide rail assembly 52, causing the shovel head body 2 to quickly move away from the work roll 01, completing a large-stroke retraction in one go and freeing up the space required for roll replacement. After the roll replacement is completed, the cylinder assembly 51 reverses and drives the guide plate body 1 back to the working position. During the rolling process, the gap adjustment mechanism 6, based on the positioning of the guide plate drive mechanism 5, precisely adjusts the gap between the shovel head body 2 and the work roll 01 to ensure that the sealing isolation component 3 maintains the optimal sealing posture.

[0041] Thus, the coordinated operation of the guide plate drive mechanism 5 and the gap fine adjustment mechanism 6 ensures both the ease of roll changing and maintenance and the sealing accuracy of gap control during rolling, providing a reliable guarantee for the stable operation of the anti-tangling guide plate in the six-stand six-roll cold continuous rolling mill.

[0042] See Figure 8 As shown, in one embodiment of the present invention, the gap fine adjustment mechanism 6 includes a hydraulic motor 61 with an encoder, a drive shaft 62, and a pair of screw jacks 63; the drive shaft 62 is arranged axially along the working roller 01, and the screw jacks 63 are symmetrically mounted at both ends of the drive shaft 62; the hydraulic motor 61 drives the drive shaft 62 to synchronously drive the pair of screw jacks 63 to operate, converting the rotational motion into linear displacement; the output end 60 of the pair of screw jacks 63 abuts against the lower end of the guide plate body 1, and realizes high-precision fine adjustment of the gap between the shovel head body 2 and the working roller 01 through synchronous extension and retraction.

[0043] It should be noted that in this embodiment, the hydraulic motor 61 serves as the drive source, and its built-in encoder can provide real-time feedback of the rotational position signal, forming a closed-loop control. The hydraulic motor 61 drives the transmission shaft 62 to rotate. The transmission shaft 62 is arranged along the axial direction of the working roller 01, and its two ends synchronously drive a pair of screw jacks 63 to operate. The screw jacks 63 convert rotational motion into linear displacement, and their output end 60 abuts against the lower end of the guide plate body 1. Through synchronous extension and retraction, they drive the guide plate body 1 to make a slight movement along the slide rail direction of the slide rail assembly 52, thereby causing the shovel head body 2 to produce a precise positional change relative to the working roller 01. The pair of screw jacks 63 are symmetrically assembled at both ends of the transmission shaft 62, ensuring that the left and right sides of the guide plate body 1 rise and fall synchronously, and avoiding uneven lateral deviation in the gap between the shovel head body 2 and the working roller 01.

[0044] Under the above-mentioned structural action, the gap fine adjustment mechanism 6 can stably control the gap between the shovel head body 2 and the working roller 01 within a high-precision range of less than 5mm, so that the sealing rubber plate 31 always maintains the best contact state with the outer peripheral surface of the working roller 01, and the physical sealing and air curtain sealing effects of the sealing isolation component 3 can be fully utilized, ensuring reliable isolation between the cooling emulsion and the strip steel.

[0045] In one embodiment of the present invention, a roller body spray cooling assembly 7 is further included. The roller body spray cooling assembly 7 includes an emulsion spray pipe 71 and a plurality of liquid inlet pipes 72. The emulsion spray pipe 71 is arranged parallel to the axial direction of the work roller 01. The plurality of liquid inlet pipes 72 are connected to the guide plate body 1 through pipe supports. The emulsion spray pipe 71 is equipped with nozzle assemblies facing the work roller 01 for spraying and cooling the work roller 01.

[0046] It should be noted that in this embodiment, the emulsion spray pipe 71 is arranged parallel to the axial direction of the work roll 01, and the liquid inlet pipe I 72 of the roll body spray cooling assembly 7 is fixedly installed on the guide plate body 1 through the pipe bracket, so that the entire spray cooling assembly and the anti-winding guide plate are integrated into one unit, making full use of the limited space between the guide plate body 1 and the work roll 01 without occupying additional space inside the rolling mill. The nozzle assembly on the emulsion spray pipe 71 sprays cooling emulsion towards the roll body of the work roll 01, directly and continuously cooling the work roll 01, ensuring the stable operation of the roll under high-temperature rolling conditions.

[0047] Furthermore, after the emulsion sprayed onto the surface of the work roll 01 has cooled, it flows downwards along the surface of the work roll 01 under the action of gravity, falling onto the steep-top, gently-bottomed bend of the guide plate body 1. The guide plate body 1 receives the emulsion and guides it into the guide cavity 41, then through the guide structure 4 to discharge it to both sides of the strip. During this process, the sealing isolation element 3 on the shovel head body 2 effectively seals the gap between the shovel head body 2 and the work roll 01, preventing the emulsion from leaking onto the strip surface. The dual objectives of cooling the work roll and maintaining the strip temperature are achieved simultaneously, providing crucial support for the stable production of high-grade silicon steel within the 100℃~200℃ warm rolling process temperature window.

[0048] See Figure 9 and Figure 10 As shown, in one embodiment of the present invention, an air blowing beam 8 is provided below the emulsion spray pipe 71, and a first spray nozzle assembly 81 is arranged on the air blowing beam 8. The first spray nozzle assembly 81 blows air toward the gap between the working roller 01 and the intermediate roller to prevent the cooling emulsion under different external working conditions from flowing into each other.

[0049] Furthermore, the air inlet pipe II 811 of the first spray nozzle assembly 81 is fixed to the guide plate body 1 via a pipe bracket. The work roll 01 and the intermediate roll typically require spraying different concentrations or flow rates of cooling emulsion to meet their respective cooling needs. If the roll gap area between the two rolls lacks effective isolation, the cooling emulsion coming from above the work roll 01 or from the intermediate roll direction can easily flow along the roll gap to the area where the shovel head body 2 is located, increasing the sealing pressure of the sealing isolation component 3, and even breaking through the sealing barrier and dripping onto the strip surface. In this embodiment, the air blowing beam 8 is located below the emulsion spray pipe 71, and the first spray nozzle assembly 81 configured on it continuously sprays high-pressure airflow towards the roll gap between the work roll 01 and the intermediate roll, forming a dynamic air curtain at the roll gap inlet. This air curtain can disperse or block the heterogeneous emulsion from the intermediate roll direction outside the roll gap, preventing it from entering the sealed area between the work roll 01 and the shovel head body 2. Meanwhile, the air blowing beam 8 and the first air spray nozzle assembly 81 reduce the total amount and uncertainty of emulsion reaching the sealing isolation component 3 from the source, reduce the sealing load, and enable the physical seal of the sealing rubber plate 31 and the air curtain seal of the second blowing nozzle assembly 32 to focus on blocking the emulsion used for cooling the work roller 01, resulting in a more stable and reliable sealing effect.

[0050] In one embodiment of the present invention, an emulsion nozzle assembly 9 is provided at the bottom of the shovel head body. The emulsion nozzle assembly 9 includes multiple sets of nozzles arranged axially along the work roll 01 for spraying lubricating emulsion onto the strip surface to achieve rolling lubrication.

[0051] It should be noted that the inlet pipe II 91 of the emulsion nozzle assembly 9 is fixedly installed on the guide plate body by the pipe bracket. In this embodiment, by providing the emulsion nozzle assembly 9 at the bottom of the shovel head body 2, close-range directional lubrication of the strip steel is achieved, which solves the problem of the small internal space of the six-roll mill and the difficulty in arranging an independent strip steel lubrication device. At the same time, the emulsion isolation system formed by the flow guiding structure 4 and the sealing isolation component 3 ensures that the lubricating emulsion and the cooling emulsion go their own way and do not interfere with each other, so as to maintain the stability of the strip steel warm rolling temperature under the premise of ensuring rolling lubrication.

[0052] Specifically, the emulsion nozzle assembly 9 is located below the sealing isolator 3 and the guide structure 4. The lubricating emulsion sprayed from it acts directly on the strip steel and will not mix with the cooling emulsion flowing down from above. The large amount of cooling emulsion generated by the cooling of the upper work roll 01 is received by the guide plate body 1 and guided to both sides of the strip steel through the guide cavity 41 for discharge; any residual cooling emulsion attempting to leak is also blocked above the shovel head body 2 by the sealing isolator 3. Thus, the cooling emulsion and the lubricating emulsion are completely isolated in space, which not only meets the process requirements of strip steel rolling lubrication, but also does not affect the effective discharge and blocking of the cooling emulsion. This provides an integrated solution for cooling, lubrication and isolation for the stable production of high-grade silicon steel within the temperature window of 100℃~200℃ warm rolling process.

[0053] On the other hand, the present invention also provides a cold continuous rolling mill unit, including multiple sets of six-roll mill stands, each mill stand having the aforementioned anti-tangling guide plate installed on its inlet side and / or outlet side.

[0054] It should be noted that this cold rolling mill is specifically designed for the warm rolling production of high-grade silicon steel. The six-high mill structure with multiple stands connected in series is matched to the requirements of continuous rolling of thin-gauge silicon steel in multiple passes. The aforementioned anti-winding guide plates are installed at the inlet and outlet of the work rolls of each stand, which can simultaneously achieve multiple functions on the entire rolling production line, including preventing strip breakage and roll wrapping, blocking and guiding the emulsion in layers, and high-precision control of the small gap between the roll heads. See the above for details.

[0055] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. An anti-tangling guide plate, characterized in that, include: The guide plate body (1) is a curved slope structure with a steep upper part and a gentle lower part. The shovel head body (2) is connected to the lower end of the guide plate body (1), and the front end of the shovel head body (2) is integrally extended with a guide lip (21). A sealing isolation element (3) is provided on the shovel head body (2) and is used to seal the gap between the shovel head body (2) and the working roller (01); A flow guiding structure (4) is provided on the guide plate body (1) and the shovel head body (2) for guiding the cooling emulsion to be directed outwards to the outside of the strip steel; the flow guiding structure (4) includes a flow guiding cavity (41) which extends along both sides of the guide plate body (1) to both sides of the shovel head body (2) to form a continuous drainage channel that runs from top to bottom; A gap adjustment mechanism (6) is mounted on the guide plate body (1) to drive the guide plate body (1) to move and precisely adjust the gap between the guide plate body (1) and the working roller (01).

2. The anti-tangling guide plate according to claim 1, characterized in that, The sealing isolation component (3) includes a sealing rubber plate (31) and a second blowing nozzle assembly (32); the sealing rubber plate (31) is disposed on the shovel head body (2), and its edge is raised upward to fit the outer peripheral surface of the working roller (01); the second blowing nozzle assembly (32) is disposed between the sealing rubber plate (31) and the guide lip (21) to spray airflow toward the gap between the guide lip (21) and the working roller (01) to form an air curtain to block the cooling emulsion from dripping onto the strip steel.

3. The anti-tangling guide plate according to claim 2, characterized in that, The guide plate body (1) is provided with a horizontal reinforcing plate (11) and a vertical reinforcing plate (12), and liquid passage holes are provided on the horizontal reinforcing plate (11) and the vertical reinforcing plate (12). The liquid passage holes are used to allow the cooling emulsion flowing down along the guide plate body (1) to pass through and flow into the guide cavity (41) on both sides, and then be discharged through the lower end of the guide cavity (41).

4. The anti-tangling guide plate according to claim 3, characterized in that, The flow guiding structure (4) further includes a first liquid guiding groove (42) and a second liquid guiding groove (43) extending along the axial direction of the working roller (01); the first liquid guiding groove (42) is opened on the side of the shovel head body (2) near the guide plate body (1) for introducing the cooling emulsion into the flow guiding cavity (41), and the second liquid guiding groove (43) is opened on the guide lip (21) for receiving and discharging residual cooling emulsion.

5. The anti-tangling guide plate according to claim 1, characterized in that, It also includes a guide plate drive mechanism (5), which includes a cylinder assembly (51) and a slide rail assembly (52); the drive end of the cylinder assembly (51) is hinged to the upper end of the guide plate body (1), the slide rail assembly (52) is located on both sides of the guide plate body (1), and the guide plate body (1) is equipped with a roller assembly (53) that slides with the slide rail assembly (52); the cylinder assembly (51) can extend and retract to drive the guide plate body (1) to move along the slide rail assembly (52), thereby realizing the large stroke position adjustment of the shovel head body (2) relative to the working roller (01).

6. The anti-tangling guide plate according to claim 1, characterized in that, The gap fine adjustment mechanism (6) includes a hydraulic motor (61) with an encoder, a drive shaft (62), and a pair of screw jacks (63); the drive shaft (62) is arranged axially along the working roller (01), and the screw jacks (63) are symmetrically mounted at both ends of the drive shaft (62); the hydraulic motor (61) drives the drive shaft (62) to synchronously drive the pair of screw jacks (63) to operate, converting the rotational motion into linear displacement; the output end (60) of the pair of screw jacks (63) abuts against the lower end of the guide plate body (1), and high-precision fine adjustment of the gap between the shovel head body (2) and the working roller (01) is achieved through synchronous extension and retraction.

7. The anti-tangling guide plate according to claim 1, characterized in that, It also includes a roller body spray cooling assembly (7), which includes an emulsion spray pipe (71) and multiple inlet pipes (72). The emulsion spray pipe (71) is arranged parallel to the axial direction of the work roller (01). The multiple inlet pipes (72) are connected to the guide plate body (1) through pipe supports. The emulsion spray pipe (71) is equipped with a nozzle assembly facing the work roller (01) for spraying and cooling the work roller (01).

8. The anti-tangling guide plate according to claim 7, characterized in that, An air purging beam (8) is provided below the emulsion spray pipe (71), and a first spray nozzle assembly (81) is arranged on the air purging beam (8). The first spray nozzle assembly (81) blows air toward the gap between the working roller (01) and the intermediate roller to prevent the cooling emulsion under different external working conditions from flowing into each other.

9. The anti-tangling guide plate according to claim 1, characterized in that, The bottom of the shovel head body (2) is provided with an emulsion nozzle assembly (9), which includes multiple sets of nozzles arranged axially along the work roll (01) for spraying lubricating emulsion onto the strip surface to achieve rolling lubrication.

10. A cold continuous rolling mill, characterized in that, It includes multiple sets of six-roll mill stands, each of which is equipped with an anti-tangling guide plate as described in any one of claims 1 to 9 on its inlet and / or outlet sides.

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