Hot-rolled strip steel pickling uncoiler and steel production line

Abstract

This utility model provides a hot-rolled strip pickling and uncoiling device and a steel production line, relating to the technical field of steel production. It includes a first uncoiling processing assembly, a second uncoiling processing assembly, a scale-breaking machine, and a corner-cutting shear arranged sequentially along the strip's travel direction. The first and second uncoiling processing assemblies each include a coiler, a clamping straightener, and a head-cutting shear arranged sequentially. The two coilers are arranged in parallel and symmetrically. The output strip end of the head-cutting shear in the first uncoiling processing assembly is connected to the coiler in the second uncoiling processing assembly via a transport channel. The head-cutting shear in the second uncoiling processing assembly is connected to the scale-breaking machine via the transport channel. The corner-cutting shear is fixed to the discharge side of the scale-breaking machine and is used to cut the edges and corners of the scaled strip. This solves the technical problem of long downtime and reduced throughput during coil changing in the prior art, achieving the technical effect of eliminating downtime, improving equipment utilization, and shortening coil changing time.

Description

Technical Field

[0001] This utility model relates to the field of steel production equipment technology, and in particular to a hot-rolled strip pickling and uncoiling device and a steel production line. Background Technology

[0002] Pickling of hot-rolled strip steel is a crucial step in the steel production process that connects hot rolling with further processing. Its core function is to remove the iron oxide scale that forms on the surface of the strip steel during hot rolling and storage. Pickling improves the cleanliness and smoothness of the strip steel surface, providing a qualified substrate for subsequent deep processing steps such as cold rolling, galvanizing, and color coating.

[0003] In existing technologies, pickling production lines generally adopt single uncoiling, including a single set of uncoilers, a single straightener, and a single head cutter. After the uncoiler completes the uncoiling of a coil of strip steel, it is necessary to wait for the strip tail to completely detach from the main shaft of the uncoiler before stopping the machine to unload the steel coil, hoist the new coil onto the shaft and fix it, and then start the clamping straightener in sequence to straighten the strip head and cut the head flat to remove unqualified strip heads.

[0004] However, existing single-coil systems suffer from long downtime during coil changing, and auxiliary operations such as unloading, coiling, straightening, and cutting must be completed sequentially while the machine is stopped, resulting in a high proportion of ineffective production time and low equipment utilization. Furthermore, the long auxiliary operations limit the throughput per unit time, while idling energy consumption and equipment idle wear increase the production cost per ton of steel. Utility Model Content

[0005] The purpose of this utility model is to provide a hot-rolled strip pickling and uncoiling device and a steel production line to alleviate the technical problems of long downtime and reduced processing capacity during single uncoiling and coil changing in the prior art.

[0006] The hot-rolled strip pickling and uncoiling device provided by this utility model includes: a first uncoiling processing component, a second uncoiling processing component, a scale breaking machine and a corner cutting shear arranged sequentially along the strip's travel direction; The first uncoiling processing assembly and the second uncoiling processing assembly each include an uncoiler, a clamping straightener and a head-cutting flat shear arranged in sequence. The two uncoilers are arranged in parallel and symmetrically. The output strip end of the head-cutting flat shear in the first uncoiling processing assembly is connected to the uncoiler in the second uncoiling processing assembly through a transport channel. The head shear in the second uncoiling processing assembly is connected to the scale-breaking machine through the transport channel, and the corner shear is fixed to the discharge side of the scale-breaking machine to cut the edges and corners of the scaled strip.

[0007] Furthermore, each uncoiler is equipped with a coiling trolley on its feed side. The travel track of the coiling trolley extends along the axis of the uncoiler, and the bearing surface of the coiling trolley is matched with the center height of the main shaft of the uncoiler to transfer the steel coil to the uncoiler.

[0008] Furthermore, a ground roller saddle is provided between each coiling trolley and its corresponding uncoiler. The top of the ground roller saddle is provided with an arc-shaped support surface. One end of the ground roller saddle is connected to the discharge end of the coiling trolley, and the other end is aligned with the feed end of the uncoiler. It is used to support the steel coil to be coiled and assist in unpacking.

[0009] Furthermore, a vertical guide roller is fixed between the discharge end of the clamping straightener and the feed end of the cutting head flat shear. The center lines of the vertical guide roller and the center lines of the clamping straightener and the cutting head flat shear are collinear, which is used for transverse correction of the strip steel.

[0010] Furthermore, the discharge end of the uncoiler is connected to the feed end of the clamping straightener by a bent roller, which is used to improve the straightness of the strip head.

[0011] Furthermore, it also includes an intelligent control component, which is electrically connected to the first unwinding processing component and the second unwinding processing component via cables, respectively, for coordinating and controlling the alternating operation of the two sets of pre-processing channels.

[0012] Furthermore, it also includes a waste cart, which is positioned below the cutting head and is used to collect waste.

[0013] This utility model also provides a steel production line, including the above-mentioned hot-rolled strip pickling and uncoiling device.

[0014] Beneficial effects: The hot-rolled strip pickling and uncoiling device and steel production line provided by this utility model achieve synchronous or alternating operation of the two sets of components through the parallel and symmetrical operation of the double uncoilers in the first and second uncoiling processing components. When the second uncoiling processing component performs strip uncoiling, straightening and cutting, the first uncoiling processing component can simultaneously complete pre-preparation work such as coil preparation and coil loading, shortening the auxiliary time for coil changing. In addition, the cutting and flat shearing output end of the first uncoiling processing component is directly connected to the uncoiler of the second uncoiling processing component through the transport channel, forming a continuous transfer path of strip between the two components. After the tail of the previous coil of strip leaves the uncoiler, the new coil of strip can be put into production immediately. Compared with the single uncoiling layout, there is no need to stop and wait, shortening the downtime.

[0015] After the strip steel undergoes final pretreatment by the second uncoiling processing component, it can directly enter the scale-breaking machine to crush the iron oxide scale. Subsequently, the edges and corners are precisely processed by the corner cutting shear, eliminating the need for additional transfer processes and reducing the loss of strip steel during inter-process transportation and the waste of time. This achieves a dual improvement in production efficiency and processing quality. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of the hot-rolled strip pickling and uncoiling device provided in this embodiment of the utility model; Figure 2 A top view of the hot-rolled strip pickling and uncoiling device provided in an embodiment of this utility model.

[0018] Icons: 1-First uncoiling processing assembly; 2-Second uncoiling processing assembly; 3-Scale breaking machine; 4-Corner cutting shear; 5-Uncoiling machine; 6-Pinching straightener; 7-Head cutting flat shear; 8-Coil loading trolley; 9-Ground roller saddle; 10-Vertical guide roller; 11-Bend roller; 12-Waste trolley. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0021] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] like Figure 1 , Figure 2 As shown, the hot-rolled strip pickling and uncoiling device provided by this utility model includes: a first uncoiling processing component 1, a second uncoiling processing component 2, a scale breaking machine 3, and a corner cutting shear 4 arranged sequentially along the strip's travel direction; The first uncoiling processing assembly 1 and the second uncoiling processing assembly 2 respectively include an uncoiler 5, a clamping straightener 6 and a head-cutting flat shear 7 arranged in sequence. The two uncoilers 5 are arranged in parallel and symmetrically. The output strip end of the head-cutting flat shear 7 in the first uncoiling processing assembly 1 is connected to the uncoiler 5 in the second uncoiling processing assembly 2 through a transport channel. The head-cutting flat shear 7 in the second uncoiling processing assembly 2 is connected to the scale-breaking machine 3 through a transport channel. The corner-cutting shear 4 is fixed to the discharge side of the scale-breaking machine 3 and is used to cut the edges and corners of the scaled strip.

[0027] Specifically, along the strip's travel direction, the equipment units are arranged linearly in sequence: the first uncoiling processing assembly 1, the second uncoiling processing assembly 2, the scale-breaking machine 3, and the corner-cutting shear 4. The first uncoiling processing assembly 1 and the second uncoiling processing assembly 2 have identical structures, both arranged sequentially along the strip's travel path in the order of the uncoiler 5, the clamping straightener 6, and the head-cutting shear 7. The two uncoilers 5 are parallel and symmetrical, corresponding to the feeding start ends of the two processing assemblies respectively. The strip output end of the head-cutting shear 7 in the first uncoiling processing assembly 1 is connected to the feeding end of the uncoiler 5 in the second uncoiling processing assembly 2 via a transport channel, forming a transfer path for the strip between the two uncoiling processing assemblies. The strip output end of the head-cutting shear 7 in the second uncoiling processing assembly 2 is connected to the feeding end of the scale-breaking machine 3 via a transport channel. The corner-cutting shear 4 is fixed to the discharge side of the scale-breaking machine 3 by bolts, and the feeding center line of the corner-cutting shear 4 is collinear with the discharge center line of the scale-breaking machine 3.

[0028] Two parallel uncoilers 5, in conjunction with two independent uncoiling, straightening, and cutting processes, enable alternating coil preparation and continuous processing. When the second uncoiling component 2 is in the strip processing state, the first uncoiling component 1 can simultaneously complete the new coil feeding, uncoiling, and cutting pre-processing. The pre-processed strip is then transported through the transport channel, avoiding the downtime for coil changing required in the traditional single uncoiling layout, significantly improving equipment utilization. The dual straightener layout structure enables a dual-channel alternating operation mode in the uncoiling section. The pre-straightening process significantly shortens the strip tail-to-head connection time. Furthermore, after removing unqualified strip ends and correcting strip straightness, the strip provides a more stable base material for the scaler 3. The corner cutter 4 and the scaler 3 directly process the strip, achieving improved production efficiency, optimized processing quality, and reduced energy costs.

[0029] In the embodiments of this utility model, each uncoiler 5 is provided with an upper winding trolley 8 on the feeding side. The travel track of the upper winding trolley 8 extends along the axial direction of the uncoiler 5, and the bearing surface of the upper winding trolley 8 is matched with the center height of the main shaft of the uncoiler 5, which is used to transfer the steel coil to the uncoiler 5.

[0030] Each coiling trolley 8 and its corresponding uncoiler 5 are provided with a ground roller saddle 9. The top of the ground roller saddle 9 is provided with an arc-shaped support surface. One end of the ground roller saddle 9 is connected to the discharge end of the coiling trolley 8, and the other end is aligned with the feed end of the uncoiler 5. It is used to support the steel coil to be coiled and assist in the removal of packaging.

[0031] Specifically, the upper winding trolley 8 and the ground roller saddle 9 provide supporting assistance for the feeding process of the uncoiler 5. Each uncoiler 5 is equipped with one upper winding trolley 8 on its feeding side. The travel track of the upper winding trolley 8 extends along the axis of the uncoiler 5, and the height of its bearing surface matches the center height of the main shaft of the uncoiler 5 to realize the transfer of the steel coil to the uncoiler 5. At the same time, each upper winding trolley 8 is equipped with a ground roller saddle 9 between it and its corresponding uncoiler 5. The ground roller saddle 9 supports the steel coil, ensuring that the packaging material is removed smoothly and that the coil is accurately positioned to a reasonable working position, thereby improving work efficiency.

[0032] The efficiency and stability of the uncoiling and feeding process are improved by using the upper winding trolley 8 and the ground roller saddle 9. The track of the upper winding trolley 8 extending along the axis of the uncoiler 5 and the bearing surface height matching the main shaft ensure that the steel coil is smoothly transferred along the preset track, avoiding deviation and misalignment during the transfer process, and greatly reducing the positioning adjustment time when the steel coil is loaded onto the shaft; the ground roller saddle 9 facilitates the quick removal of steel coil packaging materials by operators, and achieves a seamless transition in steel coil transfer through docking with the upper winding trolley 8 and the uncoiler 5.

[0033] In an embodiment of this utility model, a vertical guide roller 10 is fixed between the discharge end of the clamping straightener 6 and the feed end of the cutting head flat shear 7. The center line of the vertical guide roller 10 is collinear with the center line of the clamping straightener 6 and the cutting head flat shear 7, and is used for transverse correction of the strip steel.

[0034] The discharge end of the uncoiler 5 is connected to the feed end of the clamping straightener 6 by a bent roller 11, which is used to improve the straightness of the belt head.

[0035] It also includes an intelligent control component, which is electrically connected to the first unwinding processing component 1 and the second unwinding processing component 2 via cables, and is used to coordinate and control the alternating operation of the two sets of pre-processing channels.

[0036] It also includes a waste cart 12, which is arranged below the cutting head flat shear 7 and is used to collect waste.

[0037] Specifically, a vertical guide roller 10 is fixedly connected between the discharge end of the clamping straightener 6 and the feed end of the head cutter 7, and the center line of the vertical guide roller 10 is collinear with the center lines of the clamping straightener 6 and the head cutter 7; the discharge end of the uncoiler 5 is connected to the feed end of the clamping straightener 6 through a bent roller 11; the intelligent control component is electrically connected to the first uncoiling processing component 1 and the second uncoiling processing component 2 through cables; and the waste trolley 12 is correspondingly arranged directly below the head cutter 7.

[0038] The vertical guide roller 10 is collinear with the center lines of the clamping straightener 6 and the cutting shear 7, effectively correcting the lateral deviation of the straightened strip and ensuring that the strip enters the cutting shear 7 stably and centrally. The bent roller 11 improves the straightness of the strip head after uncoiling, facilitating smooth strip passage. The intelligent control component coordinates the alternating operation of the two processing components through electrical connection, realizing parallel operation of coil preparation and production, minimizing coil change auxiliary time. The waste trolley 12 is directly arranged below the cutting shear 7, collecting shearing waste in real time, keeping the production site clean and facilitating centralized recycling of waste.

[0039] This utility model also provides a steel production line, including the above-mentioned hot-rolled strip pickling and uncoiling device, which constitutes a complete steel production process assembly line.

[0040] Based on the above embodiments, the specific working process of the hot-rolled strip pickling and uncoiling device provided by this utility model is as follows: The coil trolley 8 moves the steel coil along the axis track of the uncoiler 5 to the ground roller saddle 9 and removes the packaging. The steel coil is then sent to the main shaft of the uncoiler 5. At this time, the intelligent control component coordinates the two sets of uncoil processing components to work alternately. If the second uncoil processing component 2 is in production, the uncoiler 5 of the first uncoil processing component 1 completes the uncoiling simultaneously. After the strip is pre-bent by the bending roller 11 to improve its straightness, it enters the clamping straightener 6 for straightening. The straightened strip in the first uncoil processing component 1 is laterally corrected by the vertical guide roller 10, and the defective strip head is removed by the cutting head flat shear 7. It is then conveyed through the transport channel; continuous processing is achieved without stopping the machine to change coils.

[0041] Finally, the strip steel from the first uncoiling processing assembly 1 or the second uncoiling processing assembly 2 enters the scale breaking machine 3 to break the iron oxide scale, and then the corner cutting shear 4 cuts the edges and corners.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A pickling and uncoiling device for hot-rolled strip steel, characterized in that, include: The first uncoiling processing assembly (1), the second uncoiling processing assembly (2), the scale breaking machine (3), and the corner cutting shear (4) are arranged sequentially along the strip's travel direction. The first uncoiling processing assembly (1) and the second uncoiling processing assembly (2) respectively include an uncoiling machine (5), a clamping straightener (6) and a head-cutting flat shear (7) arranged in sequence. The two uncoiling machines (5) are arranged in parallel and symmetrically. The output strip end of the head-cutting flat shear (7) in the first uncoiling processing assembly (1) is connected to the uncoiling machine (5) in the second uncoiling processing assembly (2) through a transport channel. The head shear (7) in the second uncoiling processing assembly (2) is connected to the scale breaking machine (3) through the transport channel, and the corner shear (4) is fixed to the discharge side of the scale breaking machine (3) for cutting the edges and corners of the scaled strip.

2. The hot-rolled strip pickling and uncoiling apparatus according to claim 1, characterized in that, Each of the uncoilers (5) is provided with a coiling trolley (8) on the feeding side. The travel track of the coiling trolley (8) extends along the axis of the uncoiler (5), and the bearing surface of the coiling trolley (8) is matched with the center height of the main shaft of the uncoiler (5) to transfer the steel coil to the uncoiler (5).

3. The hot-rolled strip pickling and uncoiling apparatus according to claim 2, characterized in that, A ground roller saddle (9) is provided between each of the winding trolleys (8) and its corresponding uncoiler (5). The top of the ground roller saddle (9) is provided with an arc-shaped support surface. One end of the ground roller saddle (9) is connected to the discharge end of the winding trolley (8), and the other end is aligned with the feed end of the uncoiler (5). It is used to support the steel coil to be wound and assist in removing the packaging.

4. The hot-rolled strip pickling and uncoiling device according to claim 1, characterized in that, A vertical guide roller (10) is fixed between the discharge end of the clamping straightener (6) and the feed end of the cutting head flat shear (7). The center line of the vertical guide roller (10) is collinear with the center line of the clamping straightener (6) and the cutting head flat shear (7) for transverse correction of the strip.

5. The hot-rolled strip pickling and uncoiling apparatus according to claim 1, characterized in that, The discharge end of the uncoiler (5) is connected to the feed end of the clamping straightener (6) by a bent roller (11), which is used to improve the straightness of the belt head.

6. The hot-rolled strip pickling and uncoiling apparatus according to claim 1, characterized in that, It also includes an intelligent control component, which is electrically connected to the first unwinding processing component (1) and the second unwinding processing component (2) via cables, and is used to coordinate and control the alternating operation of the two sets of pre-processing channels.

7. The hot-rolled strip pickling and uncoiling apparatus according to claim 1, characterized in that, It also includes a waste cart (12), which is arranged below the cutting head shear (7) for collecting waste.

8. A steel production line, characterized in that, Includes the hot-rolled strip pickling and uncoiling apparatus as described in any one of claims 1-7.

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