JP5767097B2 - Steel plate reversing device - Google Patents

Description

  The present invention relates to a steel plate reversing device, and more particularly to a steel plate reversing device capable of automatically reversing without generating wrinkles in a steel plate regardless of the size of the steel plate.

  Steel plates rolled with thick steel plate mills are then frequently turned upside down in order to perform finishing operations such as press straightening, surface polishing, sandblasting, ironing, and plate surface inspection. Yes. Such reversal work has been conventionally performed using a lifting magnet. However, this method has a problem in terms of work efficiency and safety because the steel plate falls and surface flaws occur during reversal, and also involves crane work.

  On the other hand, in recent years, due to the improvement of production efficiency and the enlargement of steel structures, the size of steel sheets to be rolled has been increased. For example, the steel sheet width exceeds 5 m, the length exceeds 15 m, and the thickness exceeds 200 mm. Steel plates with a weight exceeding 80 t have been manufactured. As a result, it has become more difficult to safely and efficiently perform the reversing operation of the steel sheet, which has been conventionally performed using a lifting magnet. In recent years, the demand for the surface quality of steel sheets has become more severe, especially for nuclear materials, and it has become an extremely important issue to prevent the occurrence of steel sheet defects due to reversing work. Furthermore, it is desirable that the reversing operation can be automated due to the recent demand for labor saving.

  Conventionally, inversion work of a steel plate, as in the case of inversion of a slab, many methods have been adopted in which the steel plate is sandwiched between two opposing arms and rotated by rotating the arm (for example, Patent Document 1, 2). However, this method has a problem in that when the steel plate is reversed, the impact of the steel plate moving from one arm to the other arm is large, surface flaws are generated, and noise is high.

  Thus, several techniques for solving this problem have been proposed. For example, in Patent Document 3, a vacuum-type or magnet-type adsorption machine is installed on a reversing base and a steel plate is fixed, one end of the reversing base is moved in the horizontal direction, and the other end is moved in the vertical direction. Thus, a technique for reversing the entire reversing base is disclosed. However, this technique has a problem that it is difficult to apply to a steel plate that has been enlarged as in recent years.

  Further, in Patent Document 4, a plurality of radial arms are provided on a horizontal rotating shaft on the same plane so as to project at predetermined intervals along the axial direction of the rotating shaft, and each arm is continuously connected by a span. In the large plate reversing device in which a pair of large plate mounting frames integrated with each other is attached by a drive unit so as to be rotatable in a substantially opposite direction from the vertical direction, the large plate side edge of the large plate is disposed at the center of rotation of the large plate. A reversing device that enables smooth transfer between large arms by providing a plurality of rotating wheels on the circumferential surface along the rotation locus at predetermined intervals in the axial direction of the rotating shaft is disclosed in Patent Document 5 as a horizontal A plurality of transfer side arms that are rotated around an axis parallel to the side edge while holding the metal plate at both side edges and held by the plate surface, and both sides that receive the raised metal plate from the transfer side arm Grip at the edge and hold it on the plate surface while A plurality of receiving-side arms that are rotated in the same direction as the above-mentioned rotation around a horizontal axis, and the distance between the passing-side arm and the receiving-side arm in a state where the metal plate is raised is By providing a shift mechanism that relatively moves the transfer-side arm and the receiving-side arm in a horizontal direction between a position that is equal to the thickness and a position that is larger than that, a plurality of sheets can be generated without generating surface flaws. An apparatus for reversing a metal plate is disclosed.

Japanese Utility Model Publication No. 50-060326 JP-A-60-213307 JP-A-53-122659 Japanese Unexamined Patent Publication No. 63-278608 JP-A-11-129014

However, in the technique of Patent Document 4, although the movement of the steel plate is smoothly performed on the rotating wheel, the arm supporting the steel plate is supported by the spring so as to be movable up and down. Therefore, improvement is demanded from the viewpoint of durability and maintainability of the spring.
Moreover, the technique of patent document 5 is for the purpose of adjusting the space | interval of the sending side arm in the state which stood up the metal plate, and the receiving side arm according to the plate | board thickness of a metal plate. Because it has a shift mechanism that moves in the horizontal direction, the equipment becomes large, and it is necessary to fix it with movable and fixed clamps so that it does not move by its own weight when the metal plate tilts. There were disadvantages in terms of equipment cost and work efficiency.
In particular, when the size of a steel plate becomes large and the plate thickness changes greatly from about 10 mm to about 200 mm as in recent years, it is extremely difficult to reverse all the plate thicknesses without causing surface flaws with one reversing device. There is a problem.

  The present invention has been made in view of the above-described problems of the prior art, and its purpose is to automatically and efficiently perform the reversing operation of the steel sheet without generating surface defects regardless of the steel sheet dimensions. An object of the present invention is to provide a steel plate reversing device capable of performing the above.

  The inventors have intensively studied to solve the above problems. As a result, in a steel plate reversing machine having a delivery side frame and a reception side frame (equivalent to the “delivery side arm” and “reception side arm” of the prior art), each arm is constituted by a main frame and a subframe, The inventor has completed the present invention by conceiving that the steel sheet can be transferred without causing surface defects regardless of the dimensions of the steel sheet by driving the subframe to deliver the steel sheet.

That is, according to the present invention, a delivery-side frame in which a steel plate placed horizontally on a frame is rotationally driven to a substantially vertical position around a fixed rotation axis to stand the steel plate is different from the delivery-side frame. In the steel sheet reversing apparatus having a receiving side frame that receives the steel plate raised by the passing side frame in a state of being driven to rotate substantially vertically around the rotation axis, and then returns to a horizontal state by being driven to rotate, the passing side frame and Each of the receiving side frames is composed of a main frame and a sub-frame with a stopper , and the sub-frame with a stopper of the passing side frame is driven to rotate around a horizontal rotation axis at the lower end of the main frame in the vertical state, horizontal axis of rotation stoppered subframe of the receiving-side frame in the main frame upper portion in the vertical state Rotatably driving the center is a steel sheet reversing apparatus for reversing passes received in the receiving side frame the steel sheet from the transfer side frame.

In the above reversing device of the present invention, the delivery side frame, the receiving side frame, and the sub-frames with stoppers thereof are driven by a cylinder.

  According to the present invention, since the reversing operation of the steel sheet can be automatically performed without generating wrinkles on the steel sheet surface regardless of the steel sheet dimensions (plate thickness, sheet width, sheet length), the steel sheet quality As well as improving the efficiency, it can greatly contribute to the improvement of work efficiency and safety.

It is a figure explaining the state before inversion mounted on the delivery side frame in which a steel plate is in a horizontal state. It is a figure explaining the state which rotated the drive side frame to the substantially vertical from the state of FIG. 1, and stood the steel plate. In the state of FIG. 2, it is a figure explaining the state which pressed the receiving side sub-frame against the lower end part of the standing steel plate. It is a figure explaining the state which made the delivery side frame vertical from the state of FIG. It is a figure explaining the state which pushed down the steel plate from the state of FIG. 4 to the receiving side frame from the delivery side frame. FIG. 6 is a diagram illustrating a state in which the receiving side frame is rotationally driven from the state of FIG. 5 to return to the horizontal state and the inversion of the steel plate is completed.

  The steel plate reversing device of the present invention is a rotation in which a steel plate placed in a horizontal state on a frame (corresponding to an “arm” of the conventional reversing device) is fixed in a horizontal direction by a cylinder or the like, similarly to the conventional steel plate reversing device. A transfer side frame in which the steel plate is erected by rotating to a substantially vertical state around an axis, and the transfer side frame in a state of being driven to rotate in a substantially vertical state around a rotation axis fixed in a horizontal direction by a cylinder or the like. After receiving the standing steel plate, it has a receiving side frame that is rotationally driven to return to a horizontal state. However, in the conventional steel plate reversing device, when the steel plate is reversed with the two arms, when the steel plate is moved from the delivery side frame to the receiving side frame, the portion other than the lower end of the steel plate is also received by the delivery side frame. There is a considerable amount of time that it does not contact the side frame, and during this time, the steel plate moves while being inclined by its own weight. However, since this inclination / movement speed depends on the movement history of the passing side frame so far, the movement due to its own weight tends to be abrupt, and in such a case, the steel plate is attached to the receiving side frame. There was a problem that wrinkles might occur on the surface of the steel sheet due to the impact received by the steel plate.

Therefore, in the steel plate reversing device of the present invention, each of the passing side frame and the receiving side frame is constituted by a main frame and a sub frame, and the sub frame of the passing side frame is in the horizontal direction at the lower end of the main frame in the vertical state. The sub-frame of the receiving side frame is driven to rotate about the horizontal axis of rotation at the upper end of the main frame in the vertical state by a cylinder or the like. As a result, the occurrence of wrinkles due to the movement of the steel plate from the delivery side frame to the reception side frame is prevented.
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

  FIG. 1 shows a state in which the steel plate 1 is placed in contact with the stopper 3 on the transfer side frame 2 in a horizontal state by the magnet lifting 19 or the like. Here, the transfer-side frame 2 is composed of a main frame 4 and a sub-frame 5 built in the main frame 4, and can be rotated by a cylinder 6 to a vertical state around a fixed rotation shaft 7 in the horizontal direction. . The sub frame 5 is rotatable by a cylinder 9 around a rotation shaft 8 provided on the rotation shaft 7 side of the main frame 4. Here, 10a is a cradle for supporting the delivery side frame 2 in a horizontal state.

  On the other hand, the receiving frame 11 is composed of a main frame 12 and a subframe 13 built in the main frame 12, as in the delivery frame 2, and is in a substantially vertical state around a fixed rotating shaft 15 in the horizontal direction by a cylinder 14. Can rotate up to. The sub frame 13 is rotatable by a cylinder 17 around a rotation shaft 16 provided on the opposite side of the rotation shaft 15 of the main frame 12. Here, 10b is a cradle for supporting the receiving frame 11 in the horizontal state.

  FIG. 2 shows a steel plate in a state where the receiving side frame 11 is raised from the passing side frame 2 at the same time as the passing side frame 2 is rotated by the cylinder 6 to the state immediately before the center of rotation about the rotating shaft 7. In order to receive 1, a state in which the cylinder 14 is rotated about the rotation axis 15 to the vertical excess is shown. The reason why the angle of the delivery side frame 2 is rotated just before the vertical and the angle of the receiving side frame 11 is rotated to exceed the vertical is as follows. This is to prevent falling down. Note that the rotation angle of the delivery side frame 2 and the receiving side frame 11 may be in a vertical state when the steel plate can be reliably prevented from overturning or when a device for that purpose is separately installed.

  Between the above-mentioned delivery side frame 2 and the receiving side frame 11, in order to be able to process a thick steel plate, it is set to 200 mm or more. Therefore, when a steel plate thinner than the interval is reversed, a large gap is generated between the steel plate 1 and the receiving frame 11. When the steel plate 1 is transferred to the receiving frame 11 while being transferred in this state, the lower end portion of the steel plate 1 is still on the transferring frame 2 side, so that the receiving frame 11 is returned to the horizontal state. At this time, the steel plate 1 drops or rapidly moves to the receiving frame 11 side, and the impact causes wrinkles on the surface of the steel plate, generates a large noise, and further causes a failure of the reversing device.

  Therefore, in the present invention, in order to smoothly transfer the steel plate 1 from the delivery side frame 2 to the reception side frame 11, first, as shown in FIG. The frame 13 is rotationally driven around a horizontal rotation shaft 16 on the upper end side of the main frame upper end portion 12, and the sub frame 13 is pressed against the lower end portion of the upstanding steel plate 1. At the same time, the stopper 18 installed on the subframe is brought into contact with the lower end of the steel plate 1. Thereby, the fall of the steel plate 1 at the time of returning the receiving side frame 11 mentioned above to a horizontal state can be eliminated. In addition, since the stopper 3 in the delivery side frame 2 and the stopper 18 in the receiving side frame 11 are provided with their positions shifted in the axial direction of the rotating shaft 7 or the like, the stopper 3 and the stopper 18 are simultaneously provided in the steel plate 1. It is possible to abut.

  In addition, after the delivery side frame 2 and the reception side frame 11 are brought into a vertical state as shown in FIG. 4, the sub-frame built in the delivery side frame 2 by the cylinder 9 or the like as shown in FIG. 5 is driven to rotate about the rotation shaft 8 and is pushed down to the receiving frame 11 side to transfer the steel plate 1. After the delivery is completed, the series of steel plate reversing operations is completed by rotating the receiving side frame 11 back to the horizontal state by the cylinder 14 or the like (see FIG. 6). The sub-frame 13 pressed against the steel plate 1 by the cylinder 17 may be housed in the main frame 12 by driving the cylinder when the steel plate has been delivered to the receiving frame 11. After the side frame 11 is returned to the horizontal state, the cylinder 17 may be driven and stored in the main frame 12.

  In the steel plate reversing machine according to the present invention, the transfer side frame 2 is composed of the main frame 3 and the sub frame 4, and the sub frame 4 is driven to rotate, so that the transfer side frame 2 side is shifted to the receiving side frame 11 side. Although the steel plate is transferred by pushing down the steel plate 1, the rotation angle of the transfer side frame 2 in FIG. 4 may be exceeded vertically, that is, the steel plate may be pushed down by being driven to rotate to the receiving side frame side. In this case, the subframe of the delivery side frame can be omitted.

  As described above, according to the steel plate reversing machine of the present invention, the steel plate can be smoothly and automatically reversed regardless of fluctuations in the thickness of the steel plate. In the above description, the example in which the cylinder is used as the drive system has been described. However, for example, hydraulic pressure, air pressure, or the like can be used for driving the cylinder. Of course, methods other than cylinders may be used.

  The technique of the present invention is not limited to a steel plate reversing device, and can be applied to all reversing devices.

1: Steel plate 2: Delivery side frame 3: Delivery side frame stopper 4: Main frame of delivery side frame 5: Subframe of delivery side frame 6: Delivery side frame driving cylinder 7: Rotating shaft of delivery side frame 8: Delivery Rotating shaft of side subframe 9: Cylinder for driving side subframe 10a, 10b: Frame support 11: Reception side frame 12: Main frame of reception side frame 13: Subframe of reception side frame 14: For reception side frame drive Cylinder 15: Rotating shaft of receiving side frame 16: Rotating shaft of receiving side subframe 17: Cylinder for driving receiving side subframe 18: Stopper of receiving side frame 19: Lifting magnet

Claims (2)

A steel plate placed in a horizontal state on the frame is rotated about to a substantially vertical position around a fixed rotation axis to raise the steel plate, and a fixed rotation axis that is different from the transfer side frame In a steel plate reversing apparatus having a receiving side frame that receives a steel plate raised by the passing side frame in a state of being rotated in a vertical direction and then returns to a horizontal state by being driven to rotate, the passing side frame and the receiving side frame are respectively main It is composed of a frame and a sub-frame with a stopper , and the sub-frame with a stopper of the delivery side frame is driven to rotate around a horizontal rotation axis at the lower end of the main frame in the vertical state, and has a stopper of the receiving-side frame The sub-frame is driven to rotate around a horizontal rotation axis at the upper end of the main frame in the vertical state, Steel sheet reversing apparatus for reversing passes received in the receiving side frame serial steel from the transfer side frame. The steel plate reversing device according to claim 1, wherein the delivery side frame, the receiving side frame, and the sub-frames with stoppers thereof are driven by a cylinder.

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