Rolling guide between finisher outlet and scrap box inlet

Abstract

The application belongs to the technical field of high-speed wire production, and particularly relates to a scratch-preventing rolling guide between the outlet of a finishing mill and the inlet of a scrap box. The guide roller assembly is opposite to the roll gap between the upper roller and the lower roller of the finishing mill, and comprises two guide rollers arranged in an upper-lower mode and forming a guide cavity therebetween. The roller surface of the lower guide roller is used for rolling connection with the rolled piece, and the bottom wall of the upper guide roller is higher than the top surface of the rolled piece. The upper guide roller is used for limiting the rolled piece when the rolled piece shakes. The sliding connection between the rolled piece and the guide tube is changed into rolling connection with the guide roller, so that the surface scratch of the rolled piece is greatly reduced, and the quality of the rolled piece is improved. The lower guide roller is in contact with the rolled piece, and provides stable support for the rolled piece. When the rolled piece shakes greatly, the upper guide roller can limit the rolled piece. In the high-speed rolling process, the wear of the surface of the rolled piece is significantly reduced.

Description

Technical Field

[0001] This application belongs to the field of high-speed wire rod production technology, and in particular relates to a scratch-resistant rolling guide used between the exit of a finishing mill and the inlet of a scrap box. Background Technology

[0002] In high-speed wire rod production, a scrap box device is typically installed at the exit of the finishing mill. Its function is to collect the rolled pieces in the scrap box (4) when steel pile-up occurs, thus protecting the equipment. Existing technologies such as... Figure 1 As shown, the scrap box device is fixed at the inlet of the finishing mill roll box. A bell-shaped guide pipe 6 is typically installed on it via a guide seat as a guide. The bottom wall of the guide pipe 6 supports the rolled piece. The bell-shaped guide pipe 6 is mainly used for guiding and positioning, ensuring that the rolled steel (rolled piece) runs accurately in the set direction and position, ensuring its smooth entry into subsequent equipment, preventing deviation and twisting, and guaranteeing product dimensional accuracy and quality stability. The bell-shaped guide pipe has a simple structure and facilitates scrap removal, making it widely used in modern high-speed wire rod mills. However, in actual use, during steel stacking and rolling, the tail end vibrates significantly, easily causing intermittent scratches, resulting in poor product surface quality. This is detrimental to the production of high-standard rolled pieces and affects the economic benefits of steel enterprises. Summary of the Invention

[0003] To address the aforementioned problems in the prior art, this application provides a scratch-resistant rolling guide between the finishing mill exit and the scrap box inlet, which can reduce surface scratches on the rolled piece caused by vibration before entering the scrap box.

[0004] To achieve the above objectives, the technical solution provided in this application is as follows:

[0005] This application provides an anti-scratch rolling guide between the exit of a finishing mill and the inlet of a scrap box, including a guide roller assembly opposite to the roll gap between the upper and lower rolls of the finishing mill. The guide roller assembly includes two guide rollers arranged vertically and forming a guide cavity between them. The guide cavity is used to guide the rolled piece at the exit of the finishing mill into the scrap box. The roller surface of the lower guide roller is used to roll and connect with the rolled piece. The bottom wall of the upper guide roller is higher than the top surface of the rolled piece. The upper guide roller is used to limit the rolling piece when it vibrates.

[0006] Optionally, the guide cavity has a circular cross-section, and the guide roller has an arc-shaped groove. The arc-shaped grooves between the upper guide roller and the lower guide roller combine to form the guide cavity.

[0007] Optionally, it also includes a guide seat, and a guide tube is provided between the roll gap and the guide cavity. The guide tube is fixed on the guide seat by a base plate. The center of the guide tube is opposite to the center of the roll gap, and the top wall of the lower guide roller is higher than the inner bottom wall of the guide tube.

[0008] Optionally, the guide tube is funnel-shaped, with its diameter on the side facing the roll gap being larger than that on the side facing the guide cavity.

[0009] Optionally, a pin is fixedly connected to the guide seat, and the guide roller is rotatably connected to the pin through a bearing.

[0010] Optionally, it also includes support plates disposed on both sides of the guide roller, with pins connected to the support plates, and both upper and lower guide rollers rotatably connected to the support plates, and the support plate facing the guide seat is connected to the guide seat.

[0011] Optionally, one end of the pin is secured to the side of the support plate away from the guide roller by a pin cap, and the other end of the pin passes through the two support plates and is connected to a nut by an external thread.

[0012] Optionally, a bearing sleeve is fitted on the pin between the guide roller and the support plate. The bearing sleeve can be pressed and the bearing fixed by rotating the nut along the external thread.

[0013] Optionally, the pin has a lubricating oil chamber, which is connected to the inside of the bearing through a through hole. One side of the pin is open for adding lubricating oil into the lubricating oil chamber.

[0014] Optionally, the pin is connected to a metal tube via an internal thread on the side wall of its opening, and the end of the metal tube away from the pin is connected to a lubricating oil line, which is connected to the metal tube via a quick-connect coupling.

[0015] Optionally, the bearing consists of two connected half-sealed bearings, with the unsealed sides of the two half-sealed bearings connected to the lubricating oil chamber.

[0016] Compared with the prior art, this application has at least the following beneficial effects:

[0017] This application significantly reduces surface scratches on the rolled piece and improves its quality by changing the sliding connection between the rolled piece and the guide tube to a rolling connection between the rolled piece and the guide roller. The lower guide roller contacts the rolled piece, providing stable support and positioning. When the rolled piece vibrates significantly, the upper guide roller can limit its movement, thus significantly reducing surface wear during high-speed rolling.

[0018] By continuously adding lubricating oil to the bearing through the lubrication chamber on the pin, continuous lubrication can be achieved, ensuring the flexible rotation of the inner and outer rings of the bearing and preventing damage caused by slippage between the workpiece and the guide roller due to the bearing's inability to rotate flexibly. This application extends the distance between the high-temperature workpiece on the guide roller and the lubrication oil lines and quick-change connectors by installing a metal pipe between the pin and the plastic lubrication lines, thus preventing damage to the rubber components within the quick-change structure due to heat. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a diagram of the guide structure between the finishing mill exit and the scrap box in the existing technology;

[0021] Figure 2 This is a schematic diagram of the structure of an anti-scratch rolling guide between the exit of a finishing mill and the inlet of a scrap box in an embodiment of this application;

[0022] Figure 3 This is a cross-sectional view of the guide roller structure;

[0023] Figure 4 This is a schematic diagram illustrating the usage of an anti-scratch rolling guide between the exit of a finishing mill and the inlet of a scrap box, as described in this application embodiment.

[0024] Figure 5 This is a schematic diagram of the metal tube structure between the bearing and the quick-change structure in an embodiment of this application;

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Upper roll; 2. Lower roll; 3. Guide roll assembly; 31. Guide roll; 4. Scrap box; 5. Guide seat; 6. Guide tube; 61. Base plate; 7. Pin; 71. Pin cap; 8. Support plate; 9. Nut; 10. Bearing sleeve; 11. Lubricating oil chamber; 12. Lubricating oil system; 13. Bearing; 14. Metal tube; 15. Quick-change coupling. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.

[0028] Example 1

[0029] like Figure 2-4As shown, a scratch-resistant rolling guide between the exit of a finishing mill and the inlet of a scrap box 4 includes a guide roller assembly 3 that is opposite to the roll gap between the upper roll 1 and the lower roll 2 of the finishing mill. The guide roller assembly 3 includes two guide rollers 31, which are arranged vertically and form a guide cavity between them. The guide cavity is used to guide the rolled piece at the exit of the finishing mill into the scrap box 4. The rolled piece is in rolling contact with the roller surface of the lower guide roller 31. The bottom wall of the upper guide roller 31 is higher than the top surface of the rolled piece. The upper guide roller 31 is used to limit the rolled piece when it vibrates.

[0030] After exiting the roll gap, the rolled piece enters the guide cavity horizontally. The lower guide roller 31 contacts the rolled piece, providing stable support and positioning. When the rolled piece vibrates significantly, the upper guide roller 31 can limit its movement, preventing vibration and swaying caused by unevenness inside the guide tube 6. This application significantly reduces surface scratches on the rolled piece and improves its quality by changing the sliding connection between the rolled piece and the guide tube 6 to a rolling connection with the guide roller 31. Furthermore, it significantly reduces surface wear during high-speed rolling.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that the cross-section of the guide cavity is circular, and an arc-shaped groove is provided on the guide roller 31. The arc-shaped groove between the upper guide roller 31 and the lower guide roller 31 forms a guide cavity, which facilitates the guidance of the rolled workpiece.

[0033] The anti-scratch rolling guide between the finishing mill exit and the scrap box 4 inlet also includes a guide seat 5. A guide pipe 6 is provided between the roll gap and the guide cavity. The guide pipe 6 is fixed to the guide seat 5 by a base plate 61. The guide pipe 6 is trumpet-shaped, and its center is opposite to the center of the roll gap. The diameter of the guide pipe 6 facing the roll gap is larger than that facing the guide cavity. The top wall of the lower guide roller 31 is higher than the inner bottom wall of the guide pipe 6. In this embodiment, the trumpet-shaped guide pipe 6 is mainly used to guide the rolled workpiece and at the same time prevent the rolled workpiece from being scratched due to vibration when exiting the finishing mill.

[0034] A pin 7 is fixedly connected to the guide seat 5, and the guide roller 31 is rotatably connected to the pin 7 through the bearing 13.

[0035] This embodiment also includes support plates 8 disposed on both sides of the guide roller 31. Pins 7 are connected to the support plates 8, and both the upper and lower guide rollers 31 are rotatably connected to the support plates 8. The support plate 8 facing the guide seat 5 is connected to the guide seat 5. The support plates 8 can be used to fix the upper and lower pins 7.

[0036] One end of the pin 7 is engaged with the side of the support plate 8 away from the guide roller 31 by a pin cap 71. The other end of the pin 7 passes through two support plates 8 and is connected to a nut 9 by an external thread. To facilitate installation and fix the bearing 13, a bearing sleeve 10 is fitted on the pin 7 between the guide roller 31 and the support plate 8. The pin 7 passes through one support plate 8, the guide roller 31, the bearing sleeve 10, and the other support plate 8 in sequence and is adjacent to the nut 9. The nut 9 can be rotated along the external thread to press the bearing sleeve 10 and fix the bearing 13.

[0037] A lubricating oil chamber 11 is provided inside the pin 7. The lubricating oil chamber 11 is connected to the inside of the bearing 13 through a through hole. One side of the pin 7 is open, and the opening is connected to the lubricating oil system 12 through an internal thread. Lubricating oil can be added to the lubricating oil chamber 11 through the opening. In this embodiment, the bearing 13 consists of two connected half-sealed bearings (bearing 13 is prior art, and its specific structure is not shown). The side of the two half-sealed bearings that is close to each other is not sealed. The unsealed side of the two half-sealed bearings is connected to the lubricating oil chamber 11, which facilitates the addition of lubricating oil and increases the service life of the anti-scuff rolling guide in this embodiment.

[0038] The pin 7 is connected to a metal tube 14 via an internal thread on its side wall at the opening. In this embodiment, the metal tube is a rigid copper tube. The end of the metal tube 14 away from the pin 7 is connected to a lubricating oil pipeline, which is connected to the metal tube via a quick-connect coupling 15. Lubricating oil is continuously added to the bearing through the lubricating oil chamber on the pin 7, ensuring continuous lubrication and guaranteeing the flexible rotation of the inner and outer rings of the bearing 13. This prevents damage caused by the workpiece sliding between the workpiece and the guide roller 31 due to the bearing 13's inability to rotate flexibly. By placing the metal tube 14 between the pin 7 and the plastic lubricating oil pipeline, this application increases the distance between the high-temperature workpiece on the guide roller 31 and the lubricating oil pipeline and quick-connect coupling 15, preventing the rubber components inside the quick-connect coupling 15 from being damaged by heat.

[0039] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A scratch-resistant rolling guide between the exit of a finishing mill and the inlet of a scrap box, characterized in that, The assembly includes a guide roll assembly that is opposite to the roll gap between the upper and lower rolls of the finishing mill. The guide roll assembly includes two guide rolls arranged vertically with a guide cavity between them. The guide cavity is used to guide the rolled piece at the exit of the finishing mill into the scrap box. The roller surface of the lower guide roll is used to roll and connect with the rolled piece. The bottom wall of the upper guide roll is higher than the top surface of the rolled piece. The upper guide roll is used to limit the rolled piece when it vibrates.

2. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 1, characterized in that, The guide cavity has a circular cross-section, and the guide roller has an arc-shaped groove. The arc-shaped groove between the upper guide roller and the lower guide roller is combined to form the guide cavity.

3. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 1, characterized in that, It also includes a guide seat, and a guide tube is provided between the roller gap and the guide cavity. The guide tube is fixed on the guide seat by a base plate. The center of the guide tube is opposite to the center of the roller gap, and the top wall of the lower guide roller is higher than the inner bottom wall of the guide tube.

4. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 3, characterized in that, The guide tube is trumpet-shaped, and the diameter of the guide tube facing the roll gap is larger than that facing the guide cavity.

5. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 3, characterized in that, A pin is fixedly connected to the guide seat, and the guide roller is rotatably connected to the pin through a bearing.

6. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 5, characterized in that, It also includes support plates set on both sides of the guide roller, with pins connected to the support plates. Both the upper and lower guide rollers are rotatably connected to the support plates, and the support plate facing the guide seat is connected to the guide seat.

7. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 6, characterized in that, One end of the pin is secured to the side of the support plate away from the guide roller by a pin cap, and the other end of the pin passes through the two support plates and is connected to a nut by an external thread.

8. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 7, characterized in that, A bearing sleeve is fitted on the pin between the guide roller and the support plate. The bearing sleeve can be pressed and the bearing can be fixed by rotating the nut along the external thread.

9. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet as described in claim 5, characterized in that, The pin has a lubricating oil chamber, which is connected to the inside of the bearing through a through hole. One side of the pin is open for adding lubricating oil to the lubricating oil chamber.

10. The anti-scratch rolling guide between the finishing mill outlet and the scrap box inlet according to claim 9, characterized in that, The pin is connected to a metal tube via an internal thread on the side wall of its opening. The end of the metal tube away from the pin is connected to a lubricating oil line, which is connected to the metal tube via a quick-connect coupling.

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