JP3723523B2 - Steel strip winding device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a steel strip winding device capable of winding a steel strip in a coil shape with various inner diameters.
[0002]
[Prior art]
Hot dip steel strips, cold-rolled annealed steel strips, pickled steel strips, and the like are wound and shipped in a coil shape with a winding inner diameter according to user needs. A belt wrapper composed of a belt, a roll, a tip guide, a fork, a main body frame that supports and drives each member, a hydraulic cylinder, and the like is used for a device that winds the steel strip.
The usual belt wrapper is designed on the assumption that the steel strip is wound with a constant winding diameter. For example, in order to respond to user needs with different winding inner diameters such as 508 mm, 610 mm, and 762 mm, steel with different winding diameters is used. When the band is to be taken up, the tip guide position is greatly different as the winding diameter is changed. As a result, the tip guide is greatly separated from the steel strip entry position to be wound, and the inner diameter side winding is loosened, which is likely to cause winding deviation.
[0003]
[Problems to be solved by the invention]
Although loosening of the inner diameter side winding can be prevented by changing the angle of the tip guide by adjusting the length of the fork, manual adjustment of adjusting screws and shims on the machine side is required for adjusting the fork length. Since the work is on the machine side, the working environment is bad and difficult to adjust.
There is also a method of preventing loosening of the inner diameter side winding by winding the steel strip with an inner diameter smaller than the target winding diameter at the initial winding and increasing the winding inner diameter with the elastic force of the steel strip after 1 to 1.5 windings. It has been adopted. However, it is inevitable that the winding diameter after elastic restoration varies depending on the thickness and strength of the steel strip, and it is difficult to adjust the winding diameter to the target winding diameter.
Whichever method is used, the top of the steel strip that has been caught may hit the steel strip to be wound. The steel strip to be wound is pushed out in the radial direction of the take-up reel by the collision of the steel strip top, and as a result, winding looseness and misalignment occur.
[0004]
[Means for Solving the Problems]
The present invention has been devised to solve such a problem, and the position at which the steel strip top is pressed against the take-up reel can be adjusted according to the target winding diameter, so that the occurrence occurs on the inner diameter side. An object of the present invention is to provide a steel strip winding device capable of preventing the loose winding and winding the steel strip with various winding diameters.
[0005]
In order to achieve the object, the steel strip winding device of the present invention has a main frame formed with a recess for accommodating the take-up reel, and a first frame pivotally supported by the main frame so as to be swingable by the first hydraulic cylinder. A subframe is pivotally supported by the main frame so as to be swingable by the second hydraulic cylinder, and is pivoted to the first subframe so as to be swingable by the third hydraulic cylinder. A fork that is supported, a roller that is provided on the main frame and fork, and a belt that circulates along the circumferential surface of the take-up reel. A tip guide is attached to the tip of the link that extends from the pivot side of the fork. The first guide according to the increase in the target winding diameter so that the distance from the guide facing position where the tip guide faces the circumferential surface of the take-up reel to the take-up start position is maintained substantially constant. Characterized in that to stretch the pressure cylinder.
[0006]
Embodiment
In the steel strip winding device according to the present invention, a first subframe 20 and a second subframe 30 are pivotally attached to a main frame 10 (FIG. 1).
The main frame 10 is disposed so as to be swingable around the fulcrum 11. A recess 12 surrounding the take-up reel R is formed in the main frame 10, and a plurality of rollers 13 that determine the orbit of the belt 40 are rotatably provided. The rollers 13 are arranged in a zigzag manner, and several rollers 13 can be moved in the take-up reel R direction by a belt tension adjusting cylinder 14. A predetermined tension is applied to the belt 40 by moving the roller 13 in the take-up reel R direction.
[0007]
The first subframe 20 is pivotally supported on the main frame 10 by a pivot 21 and is connected to the main frame 10 via a first hydraulic cylinder 22 on the opposite side of the pivot 21. When the hydraulic cylinder 22 is expanded and contracted, the first subframe 20 swings around the pivot 21. At this time, the main frame 10 maintains a fixed position.
A fork 50 is pivotally supported on the first subframe 20 by a pivot 23 at the tip of the first subframe 20. The fork 50 swings about the pivot 23 when the third hydraulic cylinder 24 provided on the side surface of the first subframe 20 is expanded and contracted. The fork 50 is also rotatably provided with rollers 51 and 52 that determine the orbit of the belt 40. The proximal roller 51 is concentric with the pivot 23, and the distal roller 52 is disposed at a position in contact with the circumferential surface of the take-up reel R.
[0008]
A distal end guide 53 is provided further to the distal end side than the proximal end side roller 51. The distal end guide 53 is connected to the proximal end side of the fork 50 via a link 54. Even when take-up reels R having different diameters are arranged in the recess 12 of the main frame 10, the circumferential direction of the take-up reel R can be adjusted by adjusting the movement and swinging of the forks 50 by expanding and contracting the hydraulic cylinders 22 and 24. The tip 53a of the tip guide 53 can be positioned at a predetermined position along the line.
In addition, when a joint is provided in the middle of the link 54 and the movement trajectory of the joint is restricted, the link 54 can be turned so that the tip 53a maintains a fixed position regardless of the movement and swinging of the fork 50.
[0009]
The second sub frame 30 pivotally supported by the pivot 31 of the main frame 10 is connected to the main frame 10 via the second hydraulic cylinder 32. When the hydraulic cylinder 32 is expanded and contracted, the second subframe 30 swings around the pivot 31. A plurality of reduction rollers 33 that press the steel strip S (FIG. 2) wound around the take-up reel R against the peripheral surface of the take-up reel R are rotatably provided at the tip of the second subframe 30 on the opposite side of the pivot 31. It has been. The arms 34 of the second subframe 30 may be either linear (FIG. 1) or arched (FIGS. 2 to 4).
[0010]
The belt 40 is a circular orbit that contacts the steel strip S wound around the take-up reel R (the roller 15 at the front end of the main frame 10 → the roller 13 for applying tension → the proximal roller 51 of the fork 50 → the front end of the fork 50). The side roller 52 → the peripheral surface of the take-up reel R → the roller 15) is moved.
When the steel strip S is taken up on the take-up reel R by using the steel strip winding device, the hydraulic cylinder 22 is expanded and contracted according to the target winding diameter, and the tip of the tip guide 53 from the winding start position P of the steel strip S. The distance 53a to the guide facing position Q facing the peripheral surface of the take-up reel R is maintained substantially constant.
[0011]
When the steel strip S is wound around the take-up reel R with a small target winding diameter (for example, 508 mm), the hydraulic cylinder 22 is contracted and the hydraulic cylinder 24 is extended (FIG. 2). As the hydraulic cylinder 24 extends, the fork 50 swings in the direction of the take-up reel R about the pivot 23, and a guide facing position Q is set in the vicinity of the take-up start position P. Further, the leading end side roller 52 contacts the circumferential surface of the take-up reel R.
Next, the hydraulic cylinder 32 is extended, the reduction roller 33 is brought close to the peripheral surface of the take-up reel R, and then the belt 40 is moved along the orbit. The gap between the circumferential surface of the take-up reel R and the reduction roller 33 is preferably set to about half the plate thickness of the steel strip S to be taken up.
[0012]
The steel strip S fed to the take-up reel R comes into contact with the circumferential surface of the take-up reel R at the take-up start position P, and is wound in a state of being sandwiched between the circumferential surface of the take-up reel R and the belt 40. It is wound around a reel R. Since the steel strip S is pressed against the circumferential surface of the take-up reel R by the reduction roller 33 via the belt 40, the steel strip S is taken up with a winding diameter suitable for the take-up reel R.
The belt 40 is separated from the peripheral surface of the take-up reel R by the front end side roller 52, but the front end 53 a of the front end guide 53 is located on the winding start position P side of the front end side roller 52. Is guided by the tip guide 53. Therefore, elastic recovery of the top of the steel strip S in the tangential direction of the take-up reel R is suppressed, and the steel strip S is sent in the take-up start position P direction. Since the second steel strip S overlaps with the top, the top does not collide with the steel strip S to be wound, and the steel strip S is wound with a predetermined target winding diameter.
After the winding is completed, the hydraulic cylinder 24 is contracted, and the fork 50 is swung in a direction away from the winding reel R. As a result, the recess 12 of the main frame 10 is opened, and the coil wound around the take-up reel R is taken out.
[0013]
When winding the steel strip S with an intermediate target winding diameter (for example, 610 mm), the first hydraulic cylinder 22 is extended, and the pivot 23 is moved to the feeding side of the steel strip S (FIG. 3). Next, the fork 50 is swung toward the take-up reel R by extending the hydraulic cylinder 24, so that the tip 53 a of the tip guide 53 is opposed to the peripheral surface of the take-up reel R.
Since the pivot 23 moves in the feeding direction of the steel strip S, the distance from the guide facing position Q to the winding start position P is substantially equal when the steel strip S is wound with a small target winding diameter. . Therefore, the steel strip S can be taken up on the take-up reel R under the same conditions.
[0014]
When winding the steel strip S with a larger target winding diameter (for example, 762 mm), the first hydraulic cylinder 22 is further extended (FIG. 4). Next, the fork 50 is swung toward the take-up reel R by extending the hydraulic cylinder 24, so that the tip 53 a of the tip guide 53 is opposed to the peripheral surface of the take-up reel R. In this case as well, the distance from the guide facing position Q to the winding start position P can be set similarly, and winding under the same conditions becomes possible.
[0015]
The increase in the length of the hydraulic cylinder 24 according to the target winding diameter (the movement distance of the pivot 23) is 103 mm at a target winding diameter of 610 mm based on the target winding diameter of 508 mm in the specification designed by the present inventors. It is set to 241.5 mm with a winding diameter of 762 mm. Thus, by adjusting the expansion / contraction length of the hydraulic cylinder 24, the distance from the guide facing position Q to the winding start position P is maintained in the range of 50 to 65 mm even when the target winding diameter is changed. As a result, the winding operation is stabilized, and the steel strip S can be wound around the winding reel R without loosening or misalignment.
[0016]
If the steel strip S is to be wound up with the target winding diameter of 762 mm while the steel strip S is wound around the take-up reel R with the target winding diameter of 508 mm without extending the hydraulic cylinder 24, the guide facing position The distance from Q to the winding start position P becomes as large as 230 mm. As the distance increases, the top of the steel strip S fed from the guide facing position Q in the direction of the winding start position P is easily elastically restored in the tangential direction of the winding reel R. As a result, the top comes into contact with the steel strip S to be wound, and troubles such as loose winding and misalignment tend to occur.
[0017]
【The invention's effect】
As described above, the steel strip winding device of the present invention moves the fork in the steel strip feeding direction in accordance with the target winding diameter, thereby reducing the distance from the guide facing position to the winding start position. It is almost constant. Therefore, even when the target winding diameter is changed, the steel strip can be wound around the take-up reel under stable conditions, and a steel strip coil free from winding looseness or misalignment can be obtained.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a steel strip winding device according to the present invention. FIG. 2 is an explanatory diagram of a state in which a steel strip is wound on a take-up reel with a small target winding diameter. Explanatory drawing of the state where the steel strip is being wound on the take-up reel with an attachment diameter [FIG. 4] Explanatory drawing of the state where the steel strip is being taken up on the take-up reel with a large target winding diameter [Explanation of symbols]
10: main frame 13: roller 14: belt tension adjusting cylinder 20: first subframe 21, 23, 25: pivot 22: first hydraulic cylinder 24: third hydraulic cylinder 31: reduction roller 32: second hydraulic cylinder 40 : Belt 50: Fork 52: Front roller 53: Front guide R: Winding reel S: Steel strip P: Winding start position Q: Guide facing position

Claims (1)

A main frame formed with a recess for accommodating the take-up reel, a first sub-frame pivotally supported by the main frame so as to be swingable by the first hydraulic cylinder, and a main frame pivotable by the second hydraulic cylinder. A second sub-frame that is rotatably supported by a reduction roller, a fork pivotally supported by the first sub-frame so as to be swingable by a third hydraulic cylinder, and a roller provided on the main frame and the fork. It has a belt that circulates along the circumferential surface of the take-up reel, and a tip guide is attached to the tip of the link extending from the pivot side of the fork. From the guide facing position where the tip guide faces the circumferential surface of the take-up reel Winding the steel strip by extending the first hydraulic cylinder as the target winding diameter increases so that the distance to the winding start position is maintained substantially constant Location.

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