阅读说明：本技术 轧机的带钢压尾装置及带钢冷轧系统 (Strip steel tail pressing device of rolling mill and strip steel cold rolling system ) 是由 米楠 于 2019-11-28 设计创作，主要内容包括：本发明提供了一种轧机的带钢压尾装置及带钢冷轧系统,该轧机的带钢压尾装置包括辊子框架体、安装于辊子框架体的上辊子并排机构、下辊子并排机构和压紧驱动机构；上辊子并排机构包括第一上辊子和第二上辊子,第一上辊子和第二上辊子之间设有上辊缝；下辊子并排机构包括第一下辊子和第二下辊子,第一下辊子和第二下辊子之间设有下辊缝；并且沿料流方向,第一上辊子、第一下辊子、第二上辊子和第二下辊子依次分布；压紧驱动机构用于驱动上辊子并排机构和下辊子并排机构相对靠近或者远离。通过本发明,缓解了轧制过程中,在带钢甩尾后,轧制设备对带钢所提供的后张力的稳定性较差的技术问题。(The invention provides a strip steel tail pressing device of a rolling mill and a strip steel cold rolling system, wherein the strip steel tail pressing device of the rolling mill comprises a roller frame body, an upper roller side-by-side mechanism, a lower roller side-by-side mechanism and a pressing driving mechanism, wherein the upper roller side-by-side mechanism, the lower roller side-by-side mechanism and the pressing driving mechanism are arranged on the roller frame body; the upper roller side-by-side mechanism comprises a first upper roller and a second upper roller, and an upper roller gap is formed between the first upper roller and the second upper roller; the lower roller side-by-side mechanism comprises a first lower roller and a second lower roller, and a lower roller gap is formed between the first lower roller and the second lower roller; the first upper roller, the first lower roller, the second upper roller and the second lower roller are distributed in sequence along the material flow direction; the pressing driving mechanism is used for driving the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or far away from each other. The invention solves the technical problem that the rolling equipment has poor stability of the post tension provided by the strip steel after the strip steel is flapped in the rolling process.)

1. A strip steel tail pressing device of a rolling mill is characterized by comprising: the roller frame body, an upper roller side-by-side mechanism, a lower roller side-by-side mechanism and a pressing driving mechanism are arranged on the roller frame body; the upper roller side-by-side mechanism comprises a first upper roller and a second upper roller, and an upper roller gap is formed between the first upper roller and the second upper roller; the lower roller side-by-side mechanism comprises a first lower roller and a second lower roller, and a lower roller gap is formed between the first lower roller and the second lower roller; and the first upper roller, the first lower roller, the second upper roller and the second lower roller are distributed in sequence along the material flow direction;

the pressing driving mechanism is used for driving the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or far away from each other.

2. The strip tailing press of a rolling mill of claim 1, wherein the axis of the first upper roll, the axis of the second upper roll, the axis of the first lower roll, and the axis of the second lower roll are all perpendicular to the flow direction.

3. The strip steel tailing pressing device of the rolling mill as claimed in claim 2, wherein a limiting jackscrew for abutting against the lower roller side-by-side mechanism is connected to the lower side of the upper roller side-by-side mechanism, and/or a limiting jackscrew for abutting against the upper roller side-by-side mechanism is connected to the upper side of the lower roller side-by-side mechanism.

4. The strip tailing press of a rolling mill of claim 1, wherein the upper roller side-by-side mechanism includes an upper bearing housing for mounting the first upper roller and the second upper roller, and the lower roller side-by-side mechanism includes a lower bearing housing for mounting the first lower roller and the second lower roller, the upper bearing housing and the lower bearing housing being mounted to the roller frame body.

5. The strip steel tailing device of a rolling mill according to claim 4, wherein the lower bearing seat is fixedly provided to the roller frame body;

the pressing driving mechanism comprises a tail pressing hydraulic cylinder arranged on the roller frame body, and the tail pressing hydraulic cylinder is connected with the upper bearing seat to drive the upper roller side-by-side mechanism to move up and down.

6. The strip tailing press of a rolling mill of claim 4, wherein a locking plate is detachably attached to the roller frame body, the locking plate abutting against the upper bearing housing and the lower bearing housing, respectively, to define an axial position of the upper bearing housing and an axial position of the lower bearing housing.

7. The strip steel tailing device of a rolling mill according to claim 6, wherein the lower roll side-by-side mechanism is provided with roll changing rollers;

the belted steel of rolling mill is pressed the tail device including locating roll change gyro wheel below roll change crossbeam frame and with the jacking pneumatic cylinder that roll change crossbeam frame is connected, be equipped with on the roll change crossbeam frame and follow the glide plane of the axis direction extension of first bottom roll, and, the jacking pneumatic cylinder can drive roll change crossbeam frame rebound extremely the glide plane with roll change gyro wheel butt.

8. The strip tailing press of a rolling mill as claimed in claim 7, wherein an end portion of said roll changing cross beam is provided with an ejector pin for pushing said lower rolls side by side mechanism to move along said sliding surface.

9. The strip steel tailing pressing device of the rolling mill as claimed in claim 7, wherein a convex structure is arranged at the top of the lower bearing seat; the strip steel tail pressing device of the rolling mill comprises a roll changing lock frame, and the roll changing lock frame can be matched with the protruding structure in a locking mode so as to be connected with the lower bearing seat.

10. The strip tailing press for a rolling mill of claim 1, comprising a traverse device connected to the roller frame body for driving the roller frame body to move in an axial direction of the first lower roller.

11. The strip tailing press for a rolling mill of claim 10, wherein the traverse device comprises a base, a traverse slide mounted to the base, and a traverse hydraulic cylinder, the roller frame body being mounted to the traverse slide, the traverse hydraulic cylinder being drivingly connected to the roller frame body.

12. The strip tailing press of a rolling mill of claim 11, comprising a roll changing stand, wherein the traverse device can drive the roller frame body to move to be connected with the roll changing stand, and wherein the upper roller side-by-side mechanism and the lower roller side-by-side mechanism can move to the roll changing stand.

13. The strip steel tailing pressing device of the rolling mill according to claim 12, wherein the strip steel tailing pressing device of the rolling mill comprises a drag chain, a drag chain frame and a cross beam, and the drag chain frame is fixedly arranged; a first end of the cross beam is fixed to the roller frame body, and a second end of the cross beam extends to the outer side of the roller frame body near the roll changing table; the first end of the drag chain is connected to the drag chain frame, and the second end of the drag chain is connected to the cross beam.

14. A cold strip rolling system, comprising: a reversible rolling mill and a strip tailing device of a rolling mill according to any one of claims 1 to 13, which is arranged on the feed side of the reversible rolling mill.

Technical Field

The invention relates to the technical field of cold rolling production lines, in particular to a strip steel tail pressing device of a rolling mill and a strip steel cold rolling system.

Background

At present, reversible rolling refers to a rolling process in which a strip steel is repeatedly subjected to multi-pass rolling deformation on a rolling mill to finally obtain the thickness of a finished product. And the steel coil is conveyed to an uncoiler by steel coil conveying equipment, the uncoiler uncoils the steel coil in the first pass, and the strip head of the strip steel passes through a rolling mill and enters a rear coiler to be coiled. The front and rear tension of the strip steel in the rolling process is provided by an uncoiler, a rolling mill and a rear coiler. And at the end of the first pass rolling, after uncoiling, the strip steel with the tail flicked is separated from the coiling machine and moves to a front coiling machine at the inlet side of the rolling mill, and after the strip tail is clamped by a coiling block jaw of the front coiling machine, the strip steel is repeatedly rolled for multiple times between the front coiling machine, the rear coiling machine and the rolling mill.

In the first pass of rolling process, the strip steel is uncoiled and flapped and the strip tail reaches a section before a front coiling machine, and the strip tail is in a free tension-free state. For the subsequent rolling, a back tension is applied to the strip tail of the strip.

The steel strip pressing plate device is generally adopted to provide back tension for the steel plate after the uncoiling and the tail flicking of the uncoiler, and comprises an upper pressing plate and a lower pressing plate, the upper pressing plate is pressed down by a hydraulic cylinder during working, certain friction force is generated between the steel plate and a hardwood, so that the back tension is generated between the steel plate after the uncoiling and the tail flicking and a rolling mill, and the rolling of the first pass of a single stand is stabilized.

In order to provide larger back tension and reduce the damage to the surface of the strip steel, the upper and lower press plates in the strip steel press plate device are made of hard wood. However, compared with steel, the hardwood has softer texture, and friction causes rapid wear of the hardwood, so that the friction surface condition is deteriorated, the friction coefficient between the hardwood and the hard surface is unstable, and the stability of the back tension is reduced; hardwood also suffers from chip shedding during operation. Therefore, the strip steel pressing plate device made of hardwood materials has poor stability of the back tension applied to strip steel, easily influences the quality of a rolling section, reduces the yield and needs to frequently replace hardwood plates.

Disclosure of Invention

The invention aims to provide a strip steel tail pressing device of a rolling mill and a strip steel cold rolling system, which are used for relieving the technical problem that the stability of the rolling equipment on the post tension provided by strip steel is poor after the strip steel swings in the rolling process.

The above object of the present invention can be achieved by the following technical solutions:

the invention provides a strip steel tail pressing device of a rolling mill, which comprises: the roller frame body, an upper roller side-by-side mechanism, a lower roller side-by-side mechanism and a pressing driving mechanism are arranged on the roller frame body; the upper roller side-by-side mechanism comprises a first upper roller and a second upper roller, and an upper roller gap is formed between the first upper roller and the second upper roller; the lower roller side-by-side mechanism comprises a first lower roller and a second lower roller, and a lower roller gap is formed between the first lower roller and the second lower roller; and the first upper roller, the first lower roller, the second upper roller and the second lower roller are distributed in sequence along the material flow direction; the pressing driving mechanism is used for driving the upper roller side-by-side mechanism and the lower roller side-by-side mechanism to be relatively close to or far away from each other.

In a preferred embodiment, the axis of the first upper roller, the axis of the second upper roller, the axis of the first lower roller, and the axis of the second lower roller are all perpendicular to the flow direction.

In a preferred embodiment, a limiting jackscrew used for being abutted against the lower roller side-by-side mechanism is connected to the lower side of the upper roller side-by-side mechanism, and/or a limiting jackscrew used for being abutted against the upper roller side-by-side mechanism is connected to the upper side of the lower roller side-by-side mechanism.

In a preferred embodiment, the upper roller side-by-side mechanism includes an upper bearing housing for mounting the first upper roller and the second upper roller, and the lower roller side-by-side mechanism includes a lower bearing housing for mounting the first lower roller and the second lower roller, both the upper bearing housing and the lower bearing housing being mounted to the roller frame body.

In a preferred embodiment, the lower bearing housing is fixedly mounted to the roller frame body; the pressing driving mechanism comprises a tail pressing hydraulic cylinder arranged on the roller frame body, and the tail pressing hydraulic cylinder is connected with the upper bearing seat to drive the upper roller side-by-side mechanism to move up and down.

In a preferred embodiment, a locking plate is detachably attached to the roller frame body, and the locking plate abuts against the upper bearing housing and the lower bearing housing, respectively, to define an axial position of the upper bearing housing and an axial position of the lower bearing housing.

In a preferred embodiment, the lower roller side-by-side mechanism is provided with a roller changing roller; the belted steel of rolling mill is pressed the tail device including locating roll change gyro wheel below roll change crossbeam frame and with the jacking pneumatic cylinder that roll change crossbeam frame is connected, be equipped with on the roll change crossbeam frame and follow the glide plane of the axis direction extension of first bottom roll, and, the jacking pneumatic cylinder can drive roll change crossbeam frame rebound extremely the glide plane with roll change gyro wheel butt.

In a preferred embodiment, an end of the roll changing cross beam is provided with an ejection jackscrew for pushing the lower roll side-by-side mechanism to move along the sliding surface.

In a preferred embodiment, a raised structure is arranged on the top of the lower bearing seat; the strip steel tail pressing device of the rolling mill comprises a roll changing lock frame, and the roll changing lock frame can be matched with the protruding structure in a locking mode so as to be connected with the lower bearing seat.

In a preferred embodiment, the strip tailing press of the rolling mill comprises a traverse device connected to the roller frame body for driving the roller frame body to move in the axial direction of the first lower roller.

In a preferred embodiment, the traverse device comprises a base, a traverse slide rail mounted on the base, and a traverse hydraulic cylinder, the roller frame body is mounted on the traverse slide rail, and the traverse hydraulic cylinder is in transmission connection with the roller frame body.

In a preferred embodiment, the strip tailing press of the rolling mill comprises a roll changing stand, the traverse device can drive the roll frame body to move to be connected with the roll changing stand, and the upper roll side-by-side mechanism and the lower roll side-by-side mechanism can move to the roll changing stand.

In a preferred embodiment, the strip steel tail pressing device of the rolling mill comprises a drag chain, a drag chain frame and a cross beam, wherein the drag chain frame is fixedly arranged; a first end of the cross beam is fixed to the roller frame body, and a second end of the cross beam extends to the outer side of the roller frame body near the roll changing table; the first end of the drag chain is connected to the drag chain frame, and the second end of the drag chain is connected to the cross beam.

The invention provides a strip steel cold rolling system, which comprises: the strip steel tail pressing device of the rolling mill is arranged on the feeding side of the reversible rolling mill.

The invention has the characteristics and advantages that:

after the strip steel is uncoiled and flapped, the strip tail of the strip steel moves to a position between an upper roller side-by-side mechanism and a lower roller side-by-side mechanism in a strip steel tail pressing device of the rolling mill, a pressing driving mechanism drives an upper roller side-by-side mechanism and a lower roller side-by-side mechanism to be relatively close to each other, the first upper roller and the second upper roller are abutted to the upper surface of the strip steel, and the first lower roller and the second lower roller are abutted to the lower surface of the strip steel.

Because an upper roll gap is arranged between the first upper roll and the second upper roll, a lower roll gap is arranged between the first lower roll and the second lower roll, and the first upper roll, the first lower roll, the second upper roll and the second lower roll are distributed in sequence along the material flow direction, the strip steel can be elastically deformed under the action of pressing force, and the first upper roll, the first lower roll, the second upper roll and the second lower roll apply relatively stable back tension to the strip steel.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is an axonometric view of a strip steel tailing device of a rolling mill provided by the invention at a rolling tailing position;

FIG. 2 is an axonometric view of a strip steel tail pressing device of a rolling mill provided by the invention at a maintenance position;

FIG. 3 is a front view of a strip tailing press of the rolling mill shown in FIG. 2;

FIG. 4 is a side view of a strip tailing press of the rolling mill shown in FIG. 2;

FIG. 5 is a schematic view of the rollers in the strip tailing press of the rolling mill provided by the present invention;

FIG. 6 is a side view of the upper roller side-by-side mechanism in the tail rolling apparatus of the rolling mill according to the present invention;

FIG. 7 is a front elevational view of the upper roller side by side mechanism shown in FIG. 6;

FIG. 8 is a side view of the lower roll side-by-side mechanism in the strip tail rolling apparatus of the rolling mill provided by the present invention;

FIG. 9 is a front view of the lower roller side by side mechanism shown in FIG. 8;

FIG. 10 is a schematic structural diagram of a roll-changing beam frame in a strip steel tail pressing device of a rolling mill provided by the invention;

FIG. 11 is an isometric view from a first perspective of a roll change cage in a strip tail rolling apparatus of a rolling mill provided in accordance with the present invention;

FIG. 12 is an isometric view from a second perspective of a roll change cage in a strip tail rolling apparatus of a rolling mill provided in accordance with the present invention;

FIG. 13 is a schematic diagram of a cold strip rolling system of a rolling mill provided by the present invention.

The reference numbers illustrate:

10. a roller frame body; 11. a frame body; 12. a sliding seat; 13. a supporting seat; 14. a locking plate; 100. a direction of flow;

110. an upper roller side-by-side mechanism; 111. a first upper roller; 112. a second upper roller; 113. an upper bearing seat; 114. a coupling shaft; 115. a pin shaft; 116. feeding a roll gap;

120. a lower roller side-by-side mechanism; 121. a first lower roller; 122. a second lower roller; 123. a lower bearing seat; 124. limiting jackscrews; 125. roller changing rollers; 126. a lower roll gap; 127. a groove structure;

130. a pressing drive mechanism; 131. a tail pressing hydraulic cylinder;

140. a roll changing cross beam frame; 141. a sliding surface; 142. ejecting a jackscrew;

150. a jacking hydraulic cylinder;

160. roll changing and frame locking; 161. a protrusion; 162. a protruding edge part; 163. a boss;

20. a traversing device; 21. a base; 22. a hydraulic cylinder is transversely moved; 23. transversely moving the sliding rail;

30. a roll changing rack;

401. a cross beam; 402. a drag chain; 403. a drag chain frame;

1. an uncoiler; 2. a front coiler; 3. a strip steel tail pressing device; 4. a reversible mill; 5. and a rear coiling machine.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.