Guiding system for descaling of multi-specification blanks

Abstract

The invention discloses a guide system for descaling multi-specification blanks. The guide system comprises a box body, and two guide plates for guiding the blanks are arranged in the box body; the outer side of each guide plate is provided with two guide rods, and the two guide rods are horizontally arranged in a spaced mode and are perpendicular to the corresponding side walls of the box body; the side wall of the box body is provided with a via hole for the guide rod to pass through, and the via hole is provided with a guide cylinder matched with the guide rod to guide the guide rod; a driving mechanism is arranged between the two guide rods of each guide plate to drive the guide plate to move horizontally, so that the distance between the two guide plates is adjusted to adapt to blanks of different specifications; the device further comprises a control unit and two first displacement sensors. The two first displacement sensors are used for monitoring the displacement of the two guide plates correspondingly. And the driving mechanism and the two first displacement sensors are connected with the control unit. The distance between the two guide plates can be automatically adjusted, it is guaranteed that blanks of various specifications can enter the descaling collecting pipe in the center during descaling, and the descaling effect is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical engineering technology, and relates to billet descaling, and particularly to a guiding system for descaling multi-specification billets. Background Technology

[0002] In section steel, bar and wire rod and some narrow strip hot rolling production lines, the cross section of the billet exiting the furnace is generally a regular rectangle. In order to improve the surface quality of the finished steel, protect the rolling equipment and meet the rolling process requirements of the rolling line, it is usually necessary to set up a descaling box on the descaling roller table after the furnace to carry out high-pressure water descaling to remove the iron oxide scale on the surface of the billet.

[0003] To ensure effective descaling, fixed billet guide plates are usually installed in the center on both sides of the inside of the descaling box between the inlet of the descaling box and the descaling manifold. The distance between the two guide plates is slightly wider than the width of the billet (30mm-40mm on each side) to ensure that the billet passes through the descaling manifold as centrally as possible.

[0004] However, some rolling lines have a variety of finished product specifications, which correspond to various sizes of billets. The width of these billets can vary by tens of millimeters, and sometimes even by hundreds of millimeters. Sometimes the largest billet and the smallest billet differ significantly in width. As a result, the fixed guide device made according to the size of the largest billet is too wide for the small billet, and cannot ensure that the small billet passes through the center of the descaling box, thus affecting the descaling effect. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the existing technology, the purpose of this invention is to provide a guide system for descaling multi-specification billets. This invention can automatically adjust the distance between the two guide plates to ensure that billets of various specifications can enter the descaling manifold in the center during descaling, thus ensuring the descaling effect.

[0006] The technical solution of this invention is implemented as follows:

[0007] A multi-specification billet descaling guiding system includes a box body, inside which are provided two guide plates for guiding the billet, the two guide plates being arranged opposite each other to form a guiding channel; each guide plate has two guide rods on its outer side, the two guide rods being arranged horizontally at intervals and perpendicular to the corresponding side wall of the box body; the side wall of the box body has a through hole for the guide rods to pass through, and a guide cylinder adapted to the guide rod is provided on the through hole to guide the guide rod.

[0008] A drive mechanism is provided between the two guide rods of each guide plate to drive the guide plate to move horizontally, thereby adjusting the distance between the two guide plates to accommodate billets of different specifications.

[0009] It also includes a control unit and two first displacement sensors, which are used to monitor the displacement of the two guide plates respectively; the drive mechanism and the two first displacement sensors are connected to the control unit, so that the control unit can control the drive mechanism to adjust the horizontal displacement of the guide plates.

[0010] Furthermore, the driving mechanism includes a first hydraulic cylinder, which is disposed on the outside of the housing. A through hole is provided on the side wall of the housing for the piston rod to pass through. The piston rod of the first hydraulic cylinder passes horizontally through the through hole and is connected to the guide plate. The first hydraulic cylinder is connected to the control unit.

[0011] Furthermore, a connecting seat is provided on the outer side of the guide plate, and a first connecting hole is provided on the connecting seat. A corresponding second connecting hole is provided on the piston rod of the first hydraulic cylinder, so as to facilitate the connection between the piston rod and the connecting seat by means of a pin, thereby realizing the connection between the first hydraulic cylinder and the guide plate.

[0012] Furthermore, a locking mechanism is provided on the outer side wall of the box corresponding to each guide tube to enhance the stability of the guide plate.

[0013] Furthermore, the locking mechanism consists of a second hydraulic cylinder and a pin. A corresponding first insertion hole is provided on the guide cylinder, and multiple second insertion holes are provided along the length of the guide rod. All the second insertion holes are spaced apart, and each second insertion hole is arranged radially along the guide rod, so that the pin can pass through the first insertion hole and the corresponding second insertion hole in sequence, thereby realizing the position locking of the guide plate to adapt to different specifications of blanks.

[0014] Furthermore, each locking mechanism is equipped with a second displacement sensor to monitor the pin position. Both the second displacement sensor and the second hydraulic cylinder are connected to the control unit, which facilitates the control of the second hydraulic cylinder to adjust the pin position.

[0015] Furthermore, each guide plate consists of a straight segment and inclined segments at both ends of the straight segment. The inclined segments extend outward in a direction away from the other guide plate to form a flared structure at both ends of the guide plate, so as to guide the billet into the box and pass through the descaling manifold in the center.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This invention, through a closed-loop control system integrating a control unit, displacement sensor, and drive mechanism, can automatically and accurately adjust the spacing between two guide plates according to different billet specifications, ensuring that billets of various widths can pass through the descaling manifold in the center, guaranteeing the descaling effect, effectively solving the process problem that traditional fixed guide devices cannot adapt to multi-specification production, and significantly improving the surface quality of steel and the adaptability of the production line to diversified products.

[0018] 2. The symmetrical guide structure of the guide rod and guide cylinder, along with a mechanically lockable locking mechanism, provides double stability for the moving parts. After precise positioning, the guide plate can be rigidly locked by a pin, effectively resisting the impact load when the billet passes through, preventing the guide plate from shifting, and avoiding the transmission of impact force to the hydraulic drive unit. This significantly improves the system's operational stability, extends the service life of key actuators, and reduces equipment maintenance costs.

[0019] 3. This invention can automatically adjust the distance between the two guide plates. The operator only needs to select the billet specification in the control room, and the system can automatically complete the entire adjustment and locking process, which greatly shortens the specification switching time and makes continuous production of multiple specifications possible. This not only significantly improves production efficiency and equipment utilization, but also reduces the risk of operators working in high temperature and high pressure environments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 yes Figure 1 AA cross-section view.

[0022] Figure 3 yes Figure 1 BB cross section

[0023] Wherein: 01-box body; 1-guide rod; 2-guide cylinder; 3-guide plate; 4-first hydraulic cylinder; 5-connecting seat; 6-pin; 7-second hydraulic cylinder; 8-second insertion hole. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] In the metallurgical industry, to ensure the descaling effect, fixed billet guide plates are usually installed in the center on both sides of the inside of the descaling box between the inlet of the descaling box and the descaling manifold. The distance between the two guide plates is slightly wider than the width of the billet (30mm-40mm on one side) to ensure that the billet passes through the descaling manifold as centrally as possible.

[0026] However, some rolling lines have a variety of finished product specifications, which correspond to various sizes of billets. The width of these billets can vary by tens of millimeters, and sometimes even by hundreds of millimeters. Sometimes the largest billet and the smallest billet differ significantly in width. As a result, the fixed guide device made according to the size of the largest billet is too wide for the small billet, and cannot ensure that the small billet passes through the center of the descaling box, thus affecting the descaling effect.

[0027] Based on this, the present invention provides a guiding system for descaling multi-specification billets, see [link to relevant documentation]. Figure 1 , Figure 2 and Figure 3 The system includes a housing 01, inside which are two guide plates 3 for guiding the billet. The two guide plates 3 are located above the conveyor rollers and are arranged opposite each other to form a guide channel. Two guide rods 1 are respectively provided on the outer side of each guide plate 3. The two guide rods 1 are horizontally spaced apart and perpendicular to the corresponding side wall of the housing 01. The side wall of the housing 01 has a through hole for the guide rods 1 to pass through, and a guide cylinder 2 adapted to the guide rod 1 is provided in the through hole to guide the guide rod 1. To prevent corrosion of the guide rod 1, the guide rod 1 is made of stainless steel, and its outer diameter is slightly smaller than the inner diameter of the guide cylinder 2, so that the guide rod 1 can slide freely within the guide cylinder 2.

[0028] A drive mechanism is provided between the two guide rods 1 of each guide plate 3 to drive the guide plate 3 to move horizontally, thereby adjusting the distance between the two guide plates 3 to accommodate blanks of different specifications.

[0029] It also includes a control unit and two first displacement sensors, which are used to monitor the displacement of the two guide plates 3 respectively; the drive mechanism and the two first displacement sensors are connected to the control unit, so that the control unit can control the drive mechanism to adjust the horizontal displacement of the guide plate 3 according to the displacement of the guide plate monitored by the first displacement sensors.

[0030] Figure 1 The arrow in the diagram indicates the direction of billet movement. This allows for automatic adjustment of the spacing between the two guide plates based on the width of the billet to be descaled, ensuring that billets of various sizes can pass centered through the descaling manifold and guaranteeing effective descaling.

[0031] Two or more guide rods can be installed on the outer side of each guide plate. Two guide rods can provide effective guidance.

[0032] In a specific implementation, the driving mechanism includes a first hydraulic cylinder 4, which is located on the outside of the housing 01. A through hole is provided on the side wall of the housing 01 for the piston rod to pass through. The piston rod of the first hydraulic cylinder 4 passes horizontally through the through hole and is connected to the guide plate 3. The first hydraulic cylinder 4 is connected to the control unit for control by the control unit.

[0033] The first hydraulic cylinder is positioned on the outside of the housing, with the piston rod horizontally inserted into the housing and connected to the guide plate. This isolates the second hydraulic cylinder from the high-temperature, high-pressure water environment inside the housing, improving the reliability and service life of the second hydraulic cylinder.

[0034] In specific implementation, a connecting seat 5 is provided on the outer side of the guide plate 3. The connecting seat 5 is fixedly connected to the guide plate 3. The connecting seat 5 is provided with a first connecting hole, and the piston rod of the first hydraulic cylinder 4 is provided with a corresponding second connecting hole, so as to facilitate the connection between the piston rod and the connecting seat 5 by using the pin 6, thereby realizing the connection between the first hydraulic cylinder 4 and the guide plate 3.

[0035] In practice, a locking mechanism is provided on the outer side wall of the box 01 corresponding to each guide tube 2 to enhance the stability of the guide plate 3.

[0036] In specific implementation, the locking mechanism consists of a second hydraulic cylinder 7 and a pin. The pin is set on the piston rod of the second hydraulic cylinder 7 and is coaxially arranged with the second hydraulic cylinder 7. A corresponding first insertion hole is provided on the guide cylinder 2, and multiple second insertion holes 8 are provided along the length direction of the guide rod 1. All the second insertion holes 8 are spaced apart, and each second insertion hole 8 is arranged radially along the guide rod 1, so that the pin can pass through the first insertion hole and the corresponding second insertion hole 8 in sequence, thereby realizing the position locking of the guide plate 3 to adapt to different specifications of blanks.

[0037] Although the first hydraulic cylinder provides a certain degree of stability once it has extended to its designated position, the billet may still collide with the guide plate during the guide plate's movement, causing the guide plate to shift and affecting the guiding effect. Therefore, a locking mechanism is installed here to lock the guide plate's position, ensuring the guiding effect and thus guaranteeing the descaling process.

[0038] The spacing of the second insertion hole is set. The spacing here does not necessarily have to be uniform. The number of second insertion holes and the distance between two adjacent second insertion holes are set according to the specifications of the billet corresponding to the rolling line. If the rolling line has two specifications of billet, two second insertion holes are set; if there are three specifications of billet, three second insertion holes are set, and so on.

[0039] The second hydraulic cylinder can be positioned directly above the guide cylinder or on the side of the guide cylinder, as long as the pin corresponds to the first insertion hole, and the orientation of the second insertion hole corresponds to that of the first insertion hole. In this embodiment, as shown... Figure 2 As shown, the second hydraulic cylinder is located above the guide cylinder and has three second insertion holes. When the guide plate reaches the preset position, the first insertion hole and the corresponding second insertion hole coincide. The second hydraulic cylinder drives the pin to insert into the first insertion hole and the second insertion hole in sequence to lock the guide plate position. After locking, even if the guide plate is hit by the billet, it will not cause impact to the hydraulic cylinder and cause the guide plate to shift.

[0040] In practice, each locking mechanism is equipped with a second displacement sensor to monitor the position of the pin. Both the second displacement sensor and the second hydraulic cylinder are connected to the control unit, which facilitates the control of the second hydraulic cylinder to adjust the position of the pin.

[0041] In practice, each guide plate 3 consists of a straight section and inclined sections at both ends of the straight section. The inclined sections extend outward in a direction away from the other guide plate 3 to form a flared structure at both ends of the guide plate 3, so as to guide the billet into the box 01 and pass through the descaling manifold in the center.

[0042] Production personnel, having prior knowledge of the billet width (e.g., D1), press the corresponding button on the control panel in the control room. This activates the first hydraulic cylinder of the two guide plates. When the first hydraulic cylinder reaches the predetermined position, the distance between the two guide plates is D2. (D2-D1) / 2 is the distance between one guide plate and the side of the billet, typically set to 30-40mm to ensure smooth passage. After the guide plates are in place, the control unit activates the second hydraulic cylinder, inserting a pin into the φ1 hole corresponding to position D1 to lock the guide plates. This completes the guide plate adjustment to ensure billet D1 passes through the descaling box. When billet D1 enters the descaling box, even if its initial position is not centered, the guide plate inlet is flared, guiding the billet between the guide plates. After being guided, it enters the descaling manifold for descaling and exits. If the subsequent billet specifications remain unchanged, the guide plates maintain this state. If the subsequent billet specifications change, after billet D1 leaves, the second hydraulic cylinder is first controlled to retract the pin, releasing the guide plate lock, and then readjusting according to the billet specifications. Similarly, before billet D3 or billet D5 enters the descaling box, the same operation is performed to adjust the guide plate to the corresponding position D4 or D6 via the first hydraulic cylinder, and finally lock it via the second hydraulic cylinder to complete the adjustment.

[0043] Finally, it should be noted that the above embodiments of the present invention are merely illustrative examples and not intended to limit the implementation of the invention. Those skilled in the art can make other variations and modifications based on the above description. It is impossible to exhaustively list all possible implementations here. All obvious variations or modifications derived from the technical solutions of this invention are still within the scope of protection of this invention.

Claims

1. A guiding system for descaling multi-specification billets, comprising a housing, wherein the housing contains two guide plates for guiding the billets, the two guide plates being arranged opposite to each other to form a guiding channel; characterized in that, Two guide rods are provided on the outer side of each guide plate. The two guide rods are horizontally spaced apart and perpendicular to the corresponding side wall of the box. The side wall of the box is provided with a through hole for the guide rod to pass through, and a guide cylinder adapted to the guide rod is provided in the through hole to guide the guide rod. A drive mechanism is provided between the two guide rods of each guide plate to drive the guide plate to move horizontally, thereby adjusting the distance between the two guide plates to accommodate billets of different specifications; It also includes a control unit and two first displacement sensors, which are used to monitor the displacement of the two guide plates respectively; The drive mechanism and two first displacement sensors are connected to the control unit, which allows the control unit to control the drive mechanism to adjust the horizontal displacement of the guide plate.

2. The guiding system for descaling multi-specification billets according to claim 1, characterized in that, The drive mechanism includes a first hydraulic cylinder, which is located on the outside of the housing. A through hole is provided on the side wall of the housing for the piston rod to pass through. The piston rod of the first hydraulic cylinder passes horizontally through the through hole and is connected to the guide plate. The first hydraulic cylinder is connected to the control unit.

3. The guiding system for descaling multi-specification billets according to claim 2, characterized in that, A connecting seat is provided on the outer side of the guide plate, and a first connecting hole is provided on the connecting seat. A corresponding second connecting hole is provided on the piston rod of the first hydraulic cylinder, so as to facilitate the connection between the piston rod and the connecting seat by using a pin, thereby realizing the connection between the first hydraulic cylinder and the guide plate.

4. A guiding system for descaling multi-specification billets according to claim 1, 2, or 3, characterized in that, A locking mechanism is provided on the outer side wall of the box corresponding to each guide tube to enhance the stability of the guide plate.

5. A guiding system for descaling multi-specification billets according to claim 4, characterized in that, The locking mechanism consists of a second hydraulic cylinder and a pin. A corresponding first insertion hole is provided on the guide cylinder, and multiple second insertion holes are provided along the length of the guide rod. All the second insertion holes are spaced apart, and each second insertion hole is arranged radially along the guide rod, so that the pin can pass through the first insertion hole and the corresponding second insertion hole in sequence, thereby realizing the position locking of the guide plate to adapt to different specifications of blanks.

6. A guiding system for descaling multi-specification billets according to claim 5, characterized in that, Each locking mechanism is equipped with a second displacement sensor to monitor the pin position. Both the second displacement sensor and the second hydraulic cylinder are connected to the control unit, which facilitates the control of the second hydraulic cylinder to adjust the pin position.

7. A guiding system for descaling multi-specification billets according to claim 1, characterized in that, Each guide plate consists of a straight section and inclined sections at both ends of the straight section. The inclined sections extend outward in a direction away from the other guide plate to form a flared structure at both ends of the guide plate, so as to guide the billet into the box and pass through the descaling manifold in the center.

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