JPH07290148A - Opening/closing structure of straightening part of leveling device - Google Patents

Abstract

PURPOSE:To easily and frequently execute a work of maintenance, etc., by moving a connecting plate in parallel with the axial direction of rod with an opening/closing device so as to open/close. CONSTITUTION:In a leveling device 1, by utilizing a toggle mechanism T and actuating a manual lever 2, a moving part 5 of a straightening part 4, in which a leveling roll 3 is arranged, is vertically moved in parallel to be opened/closed. A rod 7 is vertically fixed to the moving part 5 at four corners of a top plate 6. By inserting the rod 7 in the base plate of fixed part 8, the moving part 5 is supported free to move vertically. At the rear face side of fixed part 8, a connecting plate 10 connecting a part of the rod 7 each other at least is moved in parallel with the axial direction of rod 7 by a toggle mechanism T to open/close the leveling roll 3 of straightening part. By this method, automatically opening/closing is easily executed by a motor, actuator, etc., further, manual operation for opening/closing is easily done.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an opening / closing structure of a straightening portion which is a portion provided with a leveling roll in a leveling device for straightening a bending tendency of a metal plate such as a rolled coil or a punched product. is there.

[0002]

2. Description of the Related Art There is a so-called leveling device as a device for correcting a bending tendency of a metal plate. This leveling device removes the distortion of the metal plate by passing the metal plate to be corrected between a plurality of rows of leveling rolls provided facing each other. For example, it is used when removing a coil to be sent to a press machine or a metal molded product after press working.

In a conventional leveling device, a straightening section provided with leveling rolls is divided into a fixed section and a movable section each having a plurality of rows of leveling rolls so that cleaning and maintenance inspection of the leveling rolls can be performed. The structure is such that they can be opened and closed by connecting them with a hinge. In this case, in order to prevent the movable part from separating from the fixed part during the operation of the leveling device, a lock device for fixing the movable part and the fixed part is provided.

[0004]

However, in the conventional opening and closing structure by the hinge of the correction portion, the movable portion has a considerable weight because a plurality of leveling rolls are provided, and in order to open it completely. Must be rotated by 90 ° or more. Moreover, the lock device must be released when the movable part is opened, and cleaning by opening the movable part has been a very troublesome task. This is a major factor in neglecting cleaning work,
The metal plate to be straightened was easily scratched, resulting in a decrease in quality and a marked loss of commercial value.

[0005]

Therefore, the present inventor has achieved the present invention as a result of earnest research in view of the above-mentioned problems, and is characterized by arranging the correction parts facing each other. In the apparatus for straightening the bending behavior of a metal plate by passing it between a plurality of rows of leveling rolls, the straightening section is composed of a fixed section and a movable section each having a plurality of rows of leveling rolls. A structure in which the leveling roll is exposed by supporting the movable portion with respect to the fixed portion so that the movable portion has a plurality of rods provided upright, and at least a part of the rod is slid on the fixed portion. In addition to being movably supported, a connecting plate that connects at least a part of the rods on the back surface side of the fixing portion is moved in parallel in the axial direction of the rod by an opening / closing device to open and close.

As used herein, the term "metal plate" means a plate-shaped metal that is distorted by rolling, pressing, cutting, etc., such as a rolled coil or a punched product. Say. A leveling device removes such distortion of the metal plate, and has a structure in which the metal plate is corrected by passing the metal plate between a plurality of rows of leveling rolls arranged facing each other.

"Correcting portion" means a portion of the leveling device provided with a leveling roll. A plurality of leveling rolls are arranged so that the peripheral surfaces thereof are adjacent to each other, and the plurality of rows of leveling rolls are arranged in two stages (2
Columns). Generally, four pinch rolls are vertically arranged on both sides of the leveling roll, and the pinch roll is used for introducing and leading the metal plate. Further, the leveling rolls are usually individually and forcibly rotated by chains or gears, but the structure may be such that the metal plate is fed only by driving the pinch rollers without forcibly driving these.

The metal plate to be straightened is passed between a plurality of rows of leveling rolls facing each other to remove the bending habit.
In this method, the intervals of the metal plates of the leveling rolls facing each other in multiple rows are narrow, the intervals of the lead parts are wide, and at the initial stage, tension and compression are alternately repeated on the front and back of the metal plate. By doing so, it is gradually corrected into a flat plate shape. The straightening unit is usually provided with an adjusting device for changing the intervals between the plurality of rows of leveling rolls according to the thickness and material of the metal plate.

The plurality of rows of leveling rolls are separately provided in the movable part and the fixed part. By opening the movable part, the individual leveling rolls are exposed to perform maintenance and the like. The movable portion and the fixed portion include not only the portion provided with the leveling roll but also the one that supports the leveling roll so as to be openable and closable and the whole that supports the leveling roll in a fixed state.

In the present invention, the movable portion is moved in parallel to open and close. In this structure, a plurality of rods are provided in the movable part, and the rods are slidably supported by the fixed part so as to be moved in parallel. The rod functions as a guide for moving the movable part in parallel, and is also used as an actuating body for opening and closing the movable part. In this case, one rod may have both a function as a guide and a function as an actuating body, or one rod may have either one of the functions. As a guide for moving the movable portion in parallel, a rail or the like may be separately provided in addition to the rod.

The term "connecting plate" refers to a member for connecting some or all of the rods provided in the movable part on the back surface side of the fixed part. The movable part is opened and closed by sliding the connecting plate in the axial direction of the rod by the opening and closing device. As the opening / closing device, a toggle mechanism, a screw mechanism, or the like is driven manually or by a motor, a cylinder, or the like. Also,
The connecting plate may be directly operated by a cylinder operated by hydraulic pressure or air pressure. In this case, when the movable part is closed by the opening / closing device, without using the lock mechanism described above,
A mechanism that can prevent the movable portion from separating from the fixed portion during the leveling work is preferable.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

1 (a) and 1 (b) show an embodiment of a leveling device 1 using an opening / closing structure according to the present invention, in which a leveling roll is operated by using a toggle mechanism T and operating a manual lever 2. The movable part 5 of the correction part 4 provided with 3 is moved up and down in parallel to open and close. A rod 7 is vertically fixed to the movable portion 5 at four corners of a top plate 6, and the rod 7 is slidably inserted into a base plate 9 of a fixed portion 8 so as to be vertically movable. It Each rod 7 has a connecting plate 1 on the rear surface side of the fixing portion 8.
0 is connected, and the movable plate 5 is opened and closed by moving the connecting plate 10 up and down by the toggle mechanism T.

The link A11 of the toggle mechanism T is rotatably provided on the machine base 13 on the rear surface side of the fixed portion 8.
The link B12 rotatably connected to the rotatably mounted on the operating plate 14 fixed to the connecting plate 10. The link B12 is provided with a manual lever 2, and the manual lever 2 is rotated up and down to operate the toggle mechanism T. Operating plate 14
Is provided with a guide rod 15 at its lower end, and the guide rod 15 is slidably inserted into a guide hole 16 provided in the machine base 13 so that the operating plate 1 when the toggle mechanism T operates.
4 blurring is prevented. In this example, each rod 7 is attached to the movable portion 5 so as to be adjustable by the adjusting screw 17, so that the distance between the leveling rolls 3 of the movable portion 5 and the fixed portion 8 can be adjusted. Further, in order to keep the movable part 5 in an open state, a hook 20 for locking the manual lever 2 in a raised position is provided on the machine base 13. The hook 20 is provided on the machine base 13 in a swinging state, and when the manual lever 2 is rotated to this position, the manual lever 2 is automatically hooked and locked.

In the leveling device 1 shown in the present example, as a locking mechanism for the movable part 5 during the leveling work, a lowering stopper 18 is provided on the rod 7 and a detent stopper 19 for the link B is provided on the operating plate 14 as shown in the figure. It is provided. That is, the lowering stopper 18 is provided at the position where it comes into contact with the fixed portion 8 immediately before the link A and the link B, which are the bottom dead center of the toggle mechanism T, are aligned, and the detent stopper 19 is provided.
Is provided at a position where the link B abuts slightly below the bottom dead center. As a result, when the lowering stopper 18 comes into contact with the fixed portion 8 and the movable portion 5 is closed, the manual lever 2 is further pushed down so that the link B comes into contact with the detent stopper 19, so that the movable portion 5 is securely held. You will be locked in.

When the toggle mechanism T is used, as shown in FIG. 2, the movable portion 5 may be lifted and opened when the link is extended contrary to the previous embodiment. If provided in this manner, there is an advantage that the movable portion 5 can be lightly lifted and opened by utilizing the feature of the toggle mechanism T which is a booster mechanism. However, in this case, it is necessary to separately provide a lock device (not shown) to hold the movable portion 5 in the closed state.

The movable part 5 is opened and closed manually by the manual lever 2, and as shown in FIGS. 3A and 3B, the toggle mechanism T is operated by the air cylinder 21 instead of the manual lever 2. Good. In this case, in the embodiment shown in FIG. 2 as well, the air cylinder 21 can be operated instead of the manual lever 2. Further, as shown in FIG. 4 (a), the air cylinder 2 is not used without using the toggle mechanism T.
The movable plate 5 may be opened and closed by directly operating the operating plate 14 at 1. When the air cylinder 21 is directly moved in this way, the movable plate 5 may be opened by pushing up the connecting plate 10 as shown in FIG.

[0018]

As described above, in the opening / closing structure of the correction portion in the leveling device according to the present invention, the movable portion is provided with a plurality of rods, and at least a part of the rods is slidably supported by the fixed portion. At least a part of the movable part is connected by a connecting plate on the back side of the fixed part, and the connecting plate is translated in the axial direction of the rod by a driving device to open and close the movable part. Becomes extremely easy,
It becomes possible to easily and frequently perform work such as maintenance. Further, since the opening and closing stroke is short because it is opened and closed by the parallel movement, automatic opening and closing by a motor, an actuator, etc. is simple, and the opening and closing operation can be performed easily even manually, which is a very useful effect in practical use.

[Brief description of drawings]

1A and 1B show an embodiment of a leveling device using an opening / closing structure according to the present invention, where FIG. 1A is a front view showing a state in which a movable portion is opened, and FIG. 1B is a state in which the movable portion is closed. It is a front view shown.

FIG. 2 is a front view showing another example of the leveling device using the opening / closing structure according to the present invention.

3A and 3B show still another example of the leveling device using the opening / closing structure according to the present invention, FIG. 3A is a front view showing a state in which a movable portion is opened, and FIG. 3B is a state in which the movable portion is closed. FIG.

4 (a) and 4 (b) are front views showing still another example of the leveling device using the opening / closing structure according to the present invention.

[Explanation of symbols]

 T Toggle mechanism 1 Leveling device 2 Manual lever 3 Leveling roll 4 Correcting part 5 Moving part 6 Top plate 7 Rod 8 Fixed part 9 Main plate 10 Connecting plate 11 Link A 12 Link B 13 Machine base 14 Actuating plate 15 Guide rod 16 Guide hole 17 Adjustment screw 18 Lowering stopper 19 Detent stopper 20 Hook 21 Air cylinder

Claims (2)

[Claims] 1. An apparatus for straightening a bending behavior of a metal plate by passing between a plurality of rows of leveling rolls arranged opposite to each other in a straightening section, wherein each straightening section has a plurality of rows of leveling rolls. And a movable part. The movable part has a structure in which the movable part is openably and closably supported with respect to the fixed part to expose the leveling roll, and the movable part has a plurality of upright rods. At least a part of the rod is slidably supported by the fixing portion, and a connecting plate that connects at least a part of the rod on the back surface side of the fixing portion is parallel to the axial direction of the rod by an opening / closing device. An opening / closing structure of a correction unit in a leveling device, which is moved and opened / closed. 2. The opening / closing device is a toggle mechanism.
The opening / closing structure of the correction unit in the leveling device described.