Belt coiler with 2 times wrap angle in cold skinning mill

Abstract

The application discloses a belt coiler with two times of wrapping angles in a cold skinning unit, which comprises two symmetrical rotatingly installed lower embracing arms installed on a rack, a coiling roller connected to the other ends of the two lower embracing arms, a guide plate fixedly connected to the two lower embracing arms, the guide plate being located on the side of the coiling roller away from the lower embracing arms and the installation end of the rack, a small guide plate rotatably installed on the two lower embracing arms, the small guide plate being located on the side of the guide plate away from the coiling roller, a plurality of pressing rollers rotatably installed on the side of the small guide plate close to the coiling roller, and a swing driving device for the two lower embracing arms and the small guide plate fixedly installed on the rack. The application can meet the coiling of the strip in two directions and realize two times of wrapping angles.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical equipment technology and relates to a belt winding aid with two wrap angles in a cold leveling unit. Background Technology

[0002] To increase the tension at the leveling mill exit and correspondingly reduce the winding tension, S-rolls (also known as tension rolls) are installed at the exit of the cold rolling leveling mill. Generally, with a thickness of 0.8mm as the boundary, strips thicker than 0.8mm do not pass through the S-roll and directly enter the coiler from the leveling mill exit via the upper roller of the S-roll. Strips thinner than 0.8mm must pass through the S-roll to enter the coiler. This results in two angles when the strip head enters the coiler, requiring the belt winding aid to meet the wrap angle requirements twice.

[0003] Currently, the main structure of a belt winding aid consists of a winding belt, a set of winding rollers, an upper swing guide plate, an upper swing guide plate hydraulic cylinder, a lower clamping arm, a lower clamping arm swing hydraulic cylinder, and a frame. When the strip enters the coiler after passing through the S-roller, the upper guide plate of the winding aid needs to swing downwards to form a beak with the lower clamping arm, guiding the strip into the coiler for winding. When the strip enters the coiler without passing through the S-roller, the upper swing guide plate opens, and the lower clamping arm needs a larger wrap angle to guide the strip head into the coiler, requiring the lower clamping arm swing hydraulic cylinder to extend a second time.

[0004] The existing belt winding aids have the following problems: 1) When the belt enters the winding machine through the S-roller, the upper guide plate of the winding aid needs to swing downwards, which is a relatively complex structure with low reliability. 2) When the belt enters the winding machine without passing through the S-roller, the lower clamping arm needs a larger wrap angle to guide the belt head into the winding machine, and the lower clamping arm swing hydraulic cylinder needs to extend twice, which is difficult to control and implement. Summary of the Invention

[0005] The purpose of this invention is to provide a belt winding aid with two wrap angles in a cold leveling unit, which can meet the belt winding needs in two incoming material directions and achieve two wrap angles.

[0006] The technical solution adopted in this invention is a belt winding aid with two wrap angles in a cold leveling unit. It includes two lower clamping arms that are symmetrically rotated and mounted on the frame. The other ends of the two lower clamping arms are connected to a winding aid roller. A guide plate is also fixedly connected to the two lower clamping arms. The guide plate is located on the side of the winding aid roller away from the mounting end of the lower clamping arms and the frame. A small guide plate is also rotatably mounted on the two lower clamping arms. The small guide plate is located on the side of the guide plate away from the winding aid roller. Multiple pressure rollers are also evenly rotated and mounted on the side of the small guide plate close to the winding aid roller. A swing drive device for the two lower clamping arms and the small guide plate is also fixed on the frame.

[0007] The invention is further characterized in that,

[0008] The frame is equipped with a lower arm swing shaft, and two lower arms are rotatably mounted at both ends of the lower arm swing shaft. The swing drive device for the lower arms is a lower arm hydraulic cylinder fixed at the position corresponding to the two lower arms on the frame. The extended end of the lower arm hydraulic cylinder is connected to the corresponding lower arm.

[0009] When the lower clamping arm hydraulic cylinder extends, it drives the lower clamping arm to swing on the lower clamping arm swing shaft, thereby driving the auxiliary winding roller and guide plate to swing together with the lower clamping arm, so that the auxiliary winding roller comes into contact with the drum of the cold leveling unit.

[0010] The lower arm is equipped with a small guide plate swing shaft, and the two ends of the small guide plate are respectively rotatably mounted on the small guide plate swing shaft on the corresponding side.

[0011] The swing drive device for the small guide plate is a small guide plate hydraulic cylinder installed on the frame at the positions corresponding to both ends of the small guide plate. The extended ends of the two small guide plate hydraulic cylinders are connected to the corresponding ends of the small guide plate.

[0012] When the hydraulic cylinder of the small guide plate extends, it drives the small guide plate and the pressure roller to swing around the swing axis of the small guide plate, so that the pressure roller moves closer to the drum of the cold leveling unit.

[0013] The beneficial effects of this invention are:

[0014] This invention can meet the requirements of strip winding in two incoming directions, achieve two wrapping angles, and is convenient, safe, fast and easy to operate.

[0015] This invention enables both assisted winding of the strip via the S-roller and assisted winding without the S-roller, depending on the direction of the incoming strip. It is a new type of assisted winding machine with two wrap angles, which solves the problems of complex structure and difficult control in the prior art, improves assisted winding efficiency, and increases the productivity of the leveling machine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the belt winding aid with two wrap angles in the cold leveling unit of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the belt winding aid with two wrap angles in the cold leveling unit of the present invention as the strip passes through the S roller;

[0018] Figure 3 This is a schematic diagram of the structure of the belt winding aid with two wrap angles in the cold leveling unit of the present invention, in which the strip does not pass through the S roller.

[0019] In the diagram: 1. Lower arm hydraulic cylinder, 2. Lower arm, 3. Assist roll, 4. Guide plate, 5. Small guide plate hydraulic cylinder, 6. Small guide plate, 7. Pressure roller, 8. Lower belt guide plate, 9. Upper belt guide plate, 10. S-roller, 11. Roller drum, 12. Assist roller frame, 13. Lower arm swing shaft, 14. Small guide plate swing shaft. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] In cold leveling units, belt winding aids with two wrap angles, such as... Figure 1-3 As shown, the device includes two lower clamping arms 2 that are symmetrically rotated and mounted on the frame 12. The other ends of the two lower clamping arms 2 are connected to a winding roller 3. A guide plate 4 is also fixedly connected to the two lower clamping arms 2. The guide plate 4 is located on the side of the winding roller 3 away from the mounting ends of the lower clamping arms 2 and the frame 12. A small guide plate 6 is also rotatably mounted on the two lower clamping arms 2. The small guide plate 6 is located on the side of the guide plate 4 away from the winding roller 3. Multiple pressure rollers 7 are also evenly rotated and mounted on the side of the small guide plate 6 near the winding roller 3. A swing drive device for the two lower clamping arms 2 and the small guide plate 6 is also fixed on the frame 12.

[0023] Example 2

[0024] Based on Embodiment 1, a lower arm swing shaft 13 is installed on the frame 12. Two lower arms 2 are rotatably installed at both ends of the lower arm swing shaft 13. The swing drive device for the lower arms 2 is a lower arm hydraulic cylinder 1 fixed on the frame 12 corresponding to the positions of the two lower arms 2. The extended end of the lower arm hydraulic cylinder 1 is connected to the corresponding lower arm 2. When the lower arm hydraulic cylinder 1 extends, it drives the lower arms 2 to swing on the lower arm swing shaft 13, thereby driving the auxiliary winding roller 3 and the guide plate 4 to swing together with the lower arms 2, so that the auxiliary winding roller 3 touches the roll 11 of the cold leveling unit.

[0025] A small guide plate swing shaft 14 is installed on the lower arm 2. The two ends of the small guide plate 6 are respectively rotatably installed on the small guide plate swing shaft 14 on the corresponding side. The swing drive device of the small guide plate 6 is a small guide plate hydraulic cylinder 5 set on the frame 12 at the positions corresponding to the two ends of the small guide plate 6. The extended ends of the two small guide plate hydraulic cylinders 5 are connected to the corresponding end of the small guide plate 6. When the small guide plate hydraulic cylinder 5 extends, it drives the small guide plate 6 and the pressure roller 7 to swing around the small guide plate swing shaft 14, so that the pressure roller 7 moves closer to the roll 11 of the cold leveling unit.

[0026] Example 3

[0027] Based on Embodiment 2, the extended end of the small guide plate hydraulic cylinder 5 and the corresponding end of the small guide plate 6 are hinged, and the connection between the extended end of the lower arm hydraulic cylinder 1 and the lower arm 2 is hinged.

[0028] The working principle of the belt winding aid with two wrap angles in the cold leveling unit in this embodiment is as follows:

[0029] like Figure 1As shown, when the strip passes through the S roller 10, the upper guide plate 9 of the cold leveling unit retracts, and the lower guide plate 8 swings up to guide the strip head into the drum 11. At this time, the lower clamping arm hydraulic cylinder 1 extends, causing the lower clamping arm 2 to rotate around the lower clamping arm swing shaft 13. The auxiliary winding roller 3 and guide plate 4 installed on the lower clamping arm press against the drum 11, so that the thin strip steel can be smoothly wound on the drum. This allows the belt winding aid to meet the requirement that the strip steel can be smoothly wound on the drum and coiled when it passes through the S roller, thus realizing the winding aid function. At this time, the small guide plate hydraulic cylinder 5 is in the retracted state, and the small guide plate 6 and pressure roller 7 move away from the auxiliary winding roller 3.

[0030] like Figure 2 As shown, when the strip does not pass through the S roller 10, the lower guide plate 8 of the cold leveling unit swings down, and the upper guide plate 9 extends to guide the strip into the drum 11. At this time, the lower clamping arm hydraulic cylinder 1 extends, causing the lower clamping arm 2 to rotate around the lower clamping arm swing shaft 13. The auxiliary winding roller 3 and guide plate 4 installed on the lower clamping arm 2 press against the drum 11. At the same time, the small guide plate hydraulic cylinder 5 installed on the lower clamping arm 2 extends, driving the small guide plate 6 and pressure roller 7 installed on the lower clamping arm 2 to rotate around the small guide plate swing shaft 14. The small guide plate 6 and pressure roller 7 press against the drum 11, realizing the smooth winding of the thick strip steel onto the drum. This allows the belt winding aid to meet the requirement that the strip steel can be smoothly wound onto the drum and coiled into a coil when the material does not pass through the S roller, thus realizing the winding aid function.

[0031] This invention adds a swingable guide plate and pressure roller to the lower arm of the belt winding aid. When the strip enters the drum through the S roller, the winding aid function can be achieved solely by the lower arm; when the strip enters the drum without passing through the S roller, the lower arm first swings and presses against the drum, and then the small swing arm and pressure roller press against the drum, achieving a double wrap angle for winding aid.

Claims

1. A belt winder with two wrap angles in a cold leveling unit, characterized in that, The device includes two lower clamping arms (2) mounted symmetrically and rotating on the frame (12). The other ends of the two lower clamping arms (2) are connected to a winding roller (3). A guide plate (4) is also fixedly connected to the two lower clamping arms (2). The guide plate (4) is located on the side of the winding roller (3) away from the mounting end of the lower clamping arms (2) and the frame (12). A small guide plate (6) is also rotatably mounted on the two lower clamping arms (2). The small guide plate (6) is located on the side of the guide plate (4) away from the winding roller (3). Multiple pressure rollers (7) are also evenly rotatably mounted on the side of the small guide plate (6) close to the winding roller (3). A swing drive device for the two lower clamping arms (2) and the small guide plate (6) is also fixed on the frame (12). The frame (12) is equipped with a lower arm swing shaft (13), and two lower arms (2) are rotatably mounted at both ends of the lower arm swing shaft (13). The swing drive device of the lower arm (2) is a lower arm hydraulic cylinder (1) fixed on the frame (12) at the position corresponding to the two lower arms (2). The extended end of the lower arm hydraulic cylinder (1) is connected to the corresponding lower arm (2). The swing drive device of the small guide plate (6) is a small guide plate hydraulic cylinder (5) set on the frame (12) at the positions corresponding to both ends of the small guide plate (6), and the extended ends of the two small guide plate hydraulic cylinders (5) are connected to one end of the small guide plate (6).

2. The belt winding aid with two wrap angles in a cold leveling unit according to claim 1, characterized in that, When the lower arm hydraulic cylinder (1) extends, it drives the lower arm (2) to swing on the lower arm swing shaft (13), thereby driving the auxiliary winding roller (3) and guide plate (4) to swing together with the lower arm (2) so that the auxiliary winding roller (3) rests on the drum (11) of the upper cold leveling unit.

3. The belt winding aid with two wrap angles in a cold leveling unit according to claim 2, characterized in that, The lower arm (2) is equipped with a small guide plate swing shaft (14), and the two ends of the small guide plate (6) are respectively rotatably mounted on the small guide plate swing shaft (14) on the corresponding side.

4. The belt winding aid with two wrap angles in a cold leveling unit according to claim 3, characterized in that, When the small guide plate hydraulic cylinder (5) extends, it drives the small guide plate (6) and the pressure roller (7) to swing around the small guide plate swing axis (14), so that the pressure roller (7) moves against the roll (11) of the cold leveling unit.

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