Steckel mill

Abstract

The steckel mill comprises a coiling furnace, a pinch roll device and a rolling mill, the pinch roll device is arranged between the coiling furnace and the rolling mill, the pinch roll device comprises an upper pinch roll and a lower pinch roll, and the upper pinch roll and the lower pinch roll are symmetrically arranged at an inlet of the rolling mill; a coiling block is arranged in the coiling furnace, and a steel plate on the coiling block is guided into the rolling mill by the pinch roll device; and a loop roller device is arranged between the coiling furnace and the pinch roller device and is used for applying an acting force to the steel plate, so that the tension of the steel plate is stable. The loop roll device is additionally arranged between the pinch roll device and the coiling furnace, and the loop roll device is pressed on the steel plate through the hydraulic cylinder with certain force, so that the tension of the steel plate between the pinch roll device and the coiling block is stable, and the phenomenon that the surface of the steel plate is damaged due to slipping is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of metallurgical machinery, and in particular to a Steckel rolling mill. Background Art

[0002] The pinch roller device of the Steckel mill currently on the market is generally located between the coiling furnace door and the rolling mill, and is symmetrically arranged at the entrance or exit of the rolling mill. Its main function is to guide the steel plate to smoothly enter the roll gap of the rolling mill working roll or guide the steel plate into the coiling furnace. The pinch roller device contains an upper pinch roller and a lower pinch roller. The upper pinch roller is driven by a hydraulic cylinder and can swing, and the lower pinch roller is fixed. The upper and lower pinch rollers are active rollers driven by a motor. When using this Steckel mill, when the steel plate is coiled and uncoiled, the tension between the pinch roller and the drum is unstable, which is prone to slippage and damage to the surface of the steel plate. Summary of the invention

[0003] The present invention provides a Steckel rolling mill, aiming to solve the above-mentioned problems existing in the background technology.

[0004] The technical solution provided by the present invention is as follows:

[0005] A Steckel mill, comprising a coiling furnace, a pinch roller device and a rolling mill, wherein the pinch roller device is arranged between the coiling furnace and the rolling mill, the pinch roller device comprises an upper pinch roller and a lower pinch roller, and the upper pinch roller and the lower pinch roller are symmetrically arranged at the entrance of the rolling mill;

[0006] A coiler is provided in the coiling furnace, and the steel plate on the coiler is guided by the pinch roller device into the rolling mill;

[0007] A looper roller device is arranged between the coiling furnace and the pinch roller device, and the looper roller device is used to apply a force to the steel plate so that the tension of the steel plate is stable.

[0008] Furthermore, the looper roller device includes a roller body and a rotating shaft, the roller body is mounted on the rotating shaft, the rotating shaft is mounted on the pinch roller bracket of the pinch roller device, a swing arm is mounted at one end of the rotating shaft, a transmission shaft is mounted at one end of the roller body close to the swing arm, the transmission shaft is connected to a driving motor, and the roller body moves synchronously with the rotating shaft.

[0009] Furthermore, the roller body and the rotating shaft are both hollow welded structures with an internally cooled roller core installed inside. A first rotating joint is installed at the other end of the roller body, and a second rotating joint is installed at the other end of the rotating shaft. Cooling water cools the roller body and the rotating shaft through the first rotating joint and the second rotating joint.

[0010] Furthermore, the roller body is mounted on the rotating shaft through a bearing and a bearing seat;

[0011] The rotating shaft is mounted on the pinch roller bracket via a bearing and a bearing seat;

[0012] The swing arm is driven by a hydraulic cylinder.

[0013] Furthermore, the outer layer of the roller body is provided with a surfacing layer;

[0014] The roller body is arranged parallel to the winding drum.

[0015] Furthermore, the rolling mill is a four-roll rolling mill, and two first rollers and two second rollers are arranged inside the four-roll rolling mill. The two first rollers are located in the middle of the four-roll rolling mill and are symmetrically arranged up and down, and the two second rollers are respectively located on both sides of the two first rollers.

[0016] Further, there is a first gap between the upper pinch roller and the lower pinch roller;

[0017] There is a second gap between the two first rollers;

[0018] The first gap and the second gap have the same spacing.

[0019] Furthermore, the coiling furnace is also provided with a furnace door.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention provides a furnace coil rolling mill, in which a set of looper roller devices is additionally arranged between a pinch roller device and a coiling furnace, the looper roller device is pressed on a steel plate with a certain force by a hydraulic cylinder, so that the tension of the steel plate between the pinch roller device and the coiling drum can be stabilized; the working temperature in the coiling furnace is about 1000°C, the looper roller device is relatively close to the furnace door, and deformation will occur due to long-term heat exposure, affecting the normal operation of the equipment, water cooling inside the roller body and the rotating shaft can reduce the deformation of the equipment caused by heat radiation; the surfacing layer on the roller surface can increase the wear resistance of the roller and extend the service life; the transmission device is arranged to enable the looper roller device to keep rotating when not working, evenly heat, and reduce deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a Steckel mill in an embodiment of the present invention;

[0023] Figure 2 Schematic diagram of the structure of the looper roller device in the embodiment of the present invention.

[0024] The reference numerals are as follows:

[0025] 1-coiler, 2-upper pinch roller, 3-lower pinch roller, 4-four-roller mill, 401-first roller, 402-second roller, 5-loop roller device, 501-roller body, 502-rotating shaft, 503-transmission shaft, 504-first rotary joint, 505-second rotary joint, 506-surfacing layer, 507-inner cooling roller core, 508-drive motor, 509-motor bracket, 510-swing arm, 511-hydraulic cylinder, 6-reel, 7-furnace door, 8-steel plate, 9-pinch roller bracket. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the embodiments described below are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the detailed description of the embodiments of the present application provided below in conjunction with the accompanying drawings is intended to represent only selected embodiments of the present application, and is not intended to limit the scope of protection claimed in the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0028] It should be understood that in the description of the embodiments of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0030] Figure 1 is a schematic diagram of the structure of a Steckel mill in an embodiment of the present invention, Figure 2 Schematic diagram of the structure of the looper roller device in the embodiment of the present invention.

[0031] See also Figure 1The present invention provides a furnace coil rolling mill, including a coiling furnace 1, a pinch roller device and a rolling mill, wherein the pinch roller device is arranged between the coiling furnace 1 and the rolling mill, and the pinch roller device includes an upper pinch roller 2 and a lower pinch roller 3, and the upper pinch roller 2 and the lower pinch roller 3 are symmetrically arranged at the entrance of the rolling mill.

[0032] A reel 6 is arranged in the coiling furnace 1, and a steel plate 8 on the reel 6 is guided into the rolling mill by a pinch roller device.

[0033] A looper roller device 5 is provided between the coiling furnace 1 and the pinch roller device. The looper roller device 5 is used to apply a force to the steel plate 8 so that the tension of the steel plate 8 is stable.

[0034] Specifically, the tension of the steel plate 8 between the pinch roller device and the coiling furnace 1 of the conventional Steckel mill is unstable, and slipping is easy to occur, which will cause surface damage to the steel plate 8. The present invention stabilizes the tension of the steel plate 8 by adding a set of looper roller devices between the pinch roller device and the coiling furnace 1.

[0035] Optionally, the looper roller device 5 includes a roller body 501 and a rotating shaft 502, the roller body 501 is mounted on the rotating shaft 502, the rotating shaft 502 is mounted on the pinch roller bracket 9 of the pinch roller device, a swing arm 510 is mounted at one end of the rotating shaft 502, a transmission shaft 503 is mounted at one end of the roller body 501 close to the swing arm 510, the transmission shaft 503 is connected to a drive motor 508, the drive motor 508 is mounted on the rotating shaft 502 through a motor bracket 509, and the roller body 501 and the rotating shaft 502 move synchronously.

[0036] Optionally, the roller body 501 and the rotating shaft 502 are both hollow welded structures with an internally cooled roller core 507 installed inside. A first rotating joint 504 is installed at the other end of the roller body 501, and a second rotating joint 505 is installed at the other end of the rotating shaft 502. Cooling water cools the roller body 501 and the rotating shaft 502 through the first rotating joint 504 and the second rotating joint 505.

[0037] Specifically, the working temperature in the coiling furnace 1 is about 1000°C, and the looper roller device is relatively close to the furnace door 7. Long-term heat exposure will cause deformation, affecting the normal operation of the equipment. Water cooling inside the roller body 501 and the rotating shaft 502 can reduce equipment deformation caused by heat radiation.

[0038] Optionally, the roller body 501 is mounted on the rotating shaft 502 through bearings and bearing seats, the rotating shaft 502 is mounted on the pinch roller bracket 9 through bearings and bearing seats, and the swing arm 510 is driven by a hydraulic cylinder 511. The outer layer of the roller body 501 is provided with a surfacing layer 506.

[0039] Specifically, Figure 2As shown, the roller body 501 is installed on the rotating shaft 502 through bearings and bearing seats, and the rotating shaft 502 is installed on the pinch roller bracket 9 through bearings and bearing seats. A swing arm 510 is installed at one end of the rotating shaft 502, and the hydraulic cylinder 511 swings the looper roller device by pushing the swing arm 510. The roller body 501 is a hollow welded structure, with an internally cooled roller core 507 installed inside, and a first rotary joint 504 installed at one end. Cooling water enters the internally cooled roller core 507 and the gap between the internally cooled roller core 507 and the roller body 501 through the first rotary joint 504, and then flows out from the first rotary joint 504 to perform water circulation cooling on the roller body 501. The roller surface is surfacing with a wear-resistant hardened layer to form a surfacing layer 506 to enhance its wear resistance. The other end of the roller body 501 is equipped with a transmission shaft 503 and a drive motor 508, and the drive motor 508 is installed on the rotating shaft 502 through a motor bracket 509, and swings synchronously with the rotating shaft 502. The rotating shaft 502 is also a hollow welded structure, and a second rotating joint 505 is installed at the other end. Cooling water circulates through the second rotating joint 505 to cool the rotating shaft 502 and the bearing seat.

[0040] It can be understood that in order to enable the roller body 501 to apply a stable force to the steel plate 8 to stabilize the tension of the steel plate 8, the roller body 501 is arranged parallel to the reel 6, that is, the roller body 501 applies a stable force along the width direction of the steel plate 8.

[0041] Optionally, the rolling mill is a four-roll rolling mill 4, and two first rolling rollers 401 and two second rolling rollers 402 are arranged inside the four-roll rolling mill 4. The two first rolling rollers 401 are located in the middle of the four-roll rolling mill 4 and are symmetrically arranged up and down, and the two second rolling rollers 402 are respectively located on both sides of the two first rolling rollers 401.

[0042] Optionally, there is a first gap between the upper pinch roller 2 and the lower pinch roller 3, and there is a second gap between the two first rollers 401, and the first gap is consistent with the second gap.

[0043] The present invention provides a furnace coil rolling mill, in which a set of looper roller devices is additionally arranged between a pinch roller device and a coiling furnace, the looper roller device is pressed on a steel plate with a certain force by a hydraulic cylinder, so that the tension of the steel plate between the pinch roller device and the coiling drum can be stabilized; the working temperature in the coiling furnace is about 1000°C, the looper roller device is relatively close to the furnace door, and deformation will occur due to long-term heat exposure, affecting the normal operation of the equipment, water cooling inside the roller body and the rotating shaft can reduce the deformation of the equipment caused by heat radiation; the surfacing layer on the roller surface can increase the wear resistance of the roller and extend the service life; the transmission device is arranged to enable the looper roller device to keep rotating when not working, evenly heat, and reduce deformation.

[0044] The above is only the best specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application shall be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A Steckel mill, characterized in that: It comprises a coiling furnace, a pinch roller device and a rolling mill, wherein the pinch roller device is arranged between the coiling furnace and the rolling mill, and the pinch roller device comprises an upper pinch roller and a lower pinch roller, and the upper pinch roller and the lower pinch roller are symmetrically arranged at the entrance of the rolling mill respectively; A coiler is provided in the coiling furnace, and the steel plate on the coiler is guided by the pinch roller device into the rolling mill; A looper roller device is arranged between the coiling furnace and the pinch roller device, and the looper roller device is used to apply a force to the steel plate so that the tension of the steel plate is stable.

2. The Steckel mill according to claim 1, characterized in that: The looping roller device includes a roller body and a rotating shaft, wherein the roller body is mounted on the rotating shaft, and the rotating shaft is mounted on a pinch roller bracket of the pinch roller device. A swing arm is mounted at one end of the rotating shaft, and a transmission shaft is mounted at one end of the roller body close to the swing arm. The transmission shaft is connected to a driving motor, and the roller body moves synchronously with the rotating shaft.

3. The Steckel mill according to claim 2, characterized in that: The roller body and the rotating shaft are both hollow welded structures with an internally cooled roller core installed inside. A first rotating joint is installed at the other end of the roller body, and a second rotating joint is installed at the other end of the rotating shaft. Cooling water cools the roller body and the rotating shaft through the first rotating joint and the second rotating joint.

4. The Steckel mill according to claim 2, characterized in that: The roller body is mounted on the rotating shaft through a bearing and a bearing seat; The rotating shaft is mounted on the pinch roller bracket via a bearing and a bearing seat; The swing arm is driven by a hydraulic cylinder.

5. The Steckel mill according to any one of claims 2 to 4, characterized in that: The outer layer of the roller body is provided with a surfacing layer; The roller body is arranged parallel to the winding drum.

6. The Steckel mill according to claim 5, characterized in that: The rolling mill is a four-roll rolling mill, and two first rollers and two second rollers are arranged inside the four-roll rolling mill. The two first rollers are located in the middle of the four-roll rolling mill and are symmetrically arranged up and down, and the two second rollers are respectively located on both sides of the two first rollers.

7. The Steckel mill according to claim 6, characterized in that: There is a first gap between the upper pinch roller and the lower pinch roller; There is a second gap between the two first rollers; The first gap and the second gap have the same spacing.

8. The Steckel mill according to claim 6 or 7, characterized in that: The coiling furnace is also provided with a furnace door.

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