JPH0710806Y2 - Rolling plate pressing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field and Outline of the Invention] The present invention relates to a pressing device for manufacturing an annular plate body which is required to have flatness, and particularly, has a diameter of 300 to 1000 mm. The present invention relates to a rolling pressing device used in a step of producing flatness when manufacturing a large annular plate body.

[Prior art and its problems] Usually, small-diameter annular plate members such as washers that require flatness are manufactured by punching a steel plate with a press machine. According to this method, sufficient flatness is achieved at the time of completion of punching. It will be finished. Therefore, it can be easily manufactured and mass-produced. However, in the case of a large-diameter annular plate body having a diameter exceeding 300 mm, when the above method is adopted, scrap is extremely large and it is uneconomical. Therefore, the large-diameter annular plate body is manufactured by the following method.

First, a steel strip top plate material is bent to manufacture a coiled body. Next, the coiled body is cut at one location in the radial direction of the coil diameter to take out one roll, and the ends of this one roll are butt-welded to each other to manufacture an annular plate body (B). The annular plate body (B) has a flat surface which is twisted, a welded portion has a raised portion, and a butt portion is stepped in some cases, so that the flatness is not obtained. .
Therefore, the flatness of the annular plate (B) is obtained in the next step. In this final finishing process, a rolling pressing device as shown in FIG. 5 is used. As shown in the figure, this device comprises a mounting table (2) that rotates in conjunction with a motor and a roller supporting frame (5) that moves up and down by a cylinder. The roller supporting frame (5) is mounted on the mounting table (5). Two pressing rollers (4) and (4) are provided above the roller supporting frame (5) and rotatably supported on the lower surface of the roller supporting frame (5).
They are arranged radially at 90-degree intervals. The annular plate body (B) is placed at a predetermined position on the mounting table (2) described above, and the roller support frame (5) is lowered to place the annular plate body (B) on the mounting table (2) and the pressing roller (4). ), (4),
In this state, the mounting table (2) is rotated. Then,
The pressure rollers (4) and (4) roll on the annular plate (B), and the annular plates (B) are pressed over the entire circumference by the pressure rollers (4) and (4).
Similarly, if the back surface is also pressed over the entire circumference, the raised portion of the butted portion of the annular plate body (B) is smoothed, and the stepped portion and the strained portion caused by welding are shaped, resulting in a flat surface. The finished annular plate is completed.

However, this conventional rolling pressing device has a problem that it is difficult to obtain flatness if the annular plate (B) has a relatively small diameter.

This is because the pressing roller (4) and the mounting table (2) clamp the annular plate body (B), and the generatrix of the pressing roller (4) and the upper surface of the annular plate body (B), the mounting table (2). This is because the upper surface of the above and the lower surface of the annular plate body (B) are not in contact with each other over the entire area.

That is, since the coiled body is manufactured by bending a strip-shaped plate material, the coiled body tends to be pulled on the outer side and compressed on the inner side. It is a wedge type with a small thickness. In particular, in the case where the diameter is small, this is remarkable, and in the case where the generatrix of the pressing roller (4) and the upper surface of the mounting table (2) are parallel to each other, as in the above-described conventional rolling pressing device, these are
As shown in FIG. 6, only the vicinity of the inner peripheral portion having a large thickness is brought into contact with each other, so that the ridges and stepped portions on the outer peripheral side remain unsmoothed and flatness cannot be obtained. is there.

[Technical Problem] The present invention is directed to such an “annular plate (B) which is an object to be modified.
A mounting table (2) for mounting the rollers, a roller support frame (5) provided above the mounting table (2), and the rollers arranged radially on the lower surface of the roller support frame (5) A pressing roller (4) supported at both ends by a supporting frame (5),
(4), the mounting table (2) and the roller supporting frame (5) are provided so as to be able to come into contact with and separate from each other and relatively rotate, and the annular plate (B) is provided by the pressing rollers (4) and (4). ) Is pressed, a rolling plate pressing device for an annular plate body of a type in which the pressing rollers (4), (4) and the mounting table (2) are relatively rotated. In order to obtain flatness in (B) as well, in a state where the annular plate body (B) is pinched by the roller support frame (5) and the mounting table (2), the generatrix of the pressing roller (4) and the annular shape. The technical problem is to make the upper surface of the plate (B), the upper surface of the mounting table (2) and the lower surface thereof contact each other in the radial direction.

[Technical Means] The technical means of the book taken to solve the above-mentioned technical problem is that "the central end of each pressing roller (4) is supported by the same supporting portion, and the pressing roller (4 ),
(4) The both-ends support portions are vertically swingable support portions, and the above-mentioned center-side support portion can be adjusted in height ”.

[Operation] The above technical means operates as follows.

The annular plate body (B), which is the object to be corrected, is placed on the placing table (2), and the placing table (2) and the roller support frame (5) located above are brought close to each other to press the pressing roller (4). , (4) and the mounting table (2) clamp the annular plate (B). Since the annular plate (B) has a wedge-shaped cross-section with a small thickness on the outer peripheral side, in the pinched state, the generatrix of the pressing roller (4), the upper surface of the annular plate (B), and the mounting table ( The upper surface of 2) and the lower surface thereof are only partially in contact with each other, as in the above-described conventional one.

Both ends of the pressing roller (4) are vertically swingable supporting parts, and the central end of each pressing roller is supported by the same supporting part. When the height of the pressing roller (4) is adjusted, the axis of each pressing roller (4) is integrally inclined. That is, the generatrix lines of the pressing rollers (4) are inclined at the same angle, and accordingly, the annular plate body (B) is pressed by the pressing roller (4) and elastically deformed, and the annular plate body (B) is The bus bar of the pressing roller (4) and the upper surface of the mounting table (2) are pressed against each other in a state of being in contact with each other in the radial direction.

Therefore, when the mounting table (2) and the roller support frame (5) are rotated relative to each other in the pinched state, the pressing roller (4),
By (4), the entire area of the annular plate body (B) is pressed uniformly.

[Effect] Since the book has the above-described structure, it has the following unique effect.

The annular plate (B) is pressed by the generatrix of the pressing roller (4) and the upper surface of the mounting table (2) in a state of being in contact with the entire area in the radial direction, and in this state, the mounting table (B When 2) and the roller support frame (5) are relatively rotated,
Since the entire area of the annular plate body (B) is uniformly pressed by the pressing rollers (4), (4), even the annular plate body (B) having a relatively small diameter can surely obtain the flatness. Becomes

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the rolling pressing device of this embodiment has four guide posts (11) upright at the four corners of the base (1).
An upper frame (10) is fixedly disposed on the lower side, and a roller support frame (5) having pressure rollers (4) and (4) on the lower surface side is attached to the guide post (11) so as to be vertically movable. The base (1) is rotatably mounted with a mounting table (2) that rotates in conjunction with the motor (7). A hydraulic cylinder (6) is arranged on the upper frame (10), and the roller support frame (5) is attached to the tip of the output shaft of the hydraulic cylinder (6). That is, in this embodiment, when the roller support frame (5) is moved up and down, it comes in contact with and separates from the mounting table (2), and by rotating the mounting table (2), the roller supporting frame (5) and 5) rotates relative to each other.

As shown in FIG. 3, the pressing roller (4) is configured by rotatably mounting a rotary shaft (41) on a taper roll (40), and both ends of the rotary shaft (41). Through a spherical bearing (90) by means of a bearing support (8) provided at the center of the lower surface of the roller support frame (5) so as to be able to move up and down, and a bearing support (9) fixedly arranged outside this. I have you support it. That is, the pressure rollers (4) and (4) are supported in the spherical pair state by the bearing supports (8) and (9).

In the rolling pressing device of this embodiment, as shown in FIG.
The three pressing rollers (4), (4) are arranged radially at intervals of 120 degrees so that the large diameter side is located outside. Therefore, when the roller support frame (5) is lowered and the pressing plates (4) and (4) press the annular plate (B) mounted on the mounting table (2), three-point contact is made. The pressing roller of (1) will surely come into contact with the annular plate (B). That is, this product does not require the manufacturing precision of the pressure rollers (4), (4) and the mounting portion thereof, as compared with the above-described conventional example.

Further, since the taper roll (40) is adopted as the pressing roller (4) and the outer side of this taper roll (40) is positioned on the large diameter side, the outer peripheral side of the contact portion with the annular plate body (B) is located. The moving distance is larger than that on the inner circumference side. Therefore, the amount of sliding near the inner peripheral surface of the annular plate (B) is smaller than that of the conventional device described above, and the pressing force by the pressing rollers (4) and (4) is smaller than that of the annular plate (B). Will be effective.

As shown in FIG. 3, the above-mentioned bearing support (8) has a mounting base portion (80) formed in a circular shape and a screw portion (84) formed on the outer periphery thereof, while the roller A screw portion (54) is formed on the inner peripheral surface of an annular support (51) rotatably attached to the annular protrusion (50) on the lower surface of the support frame (5). Via the screw part (84),
The bearing support (8) and the annular support (51) are in a screw pair state. Then, as shown in FIGS. 3 and 4,
The mounting base (80) has through-holes (8
Guide pins (52) and (52) protruding from the roller support frame (5) are inserted into 1) and (81), and a guide shaft (82) protruding above the mounting base portion (80). The bearing support (8) by inserting the bearing support (8) into the guide hole (53) provided in the roller support frame (5).
On the other hand, they are arranged in a paired state in which they are formed in the vertical direction.
Further, as shown in FIGS. 3 and 4, a through hole (83) is formed in the middle of the guide pins (52) and (52), and the through hole (83) is formed in the through hole (83). A loosely inserted fixing bolt (59) is screwed into the roller support frame (5).

Therefore, when the bearing support (8) is adjusted up and down, first, the fixing bolt (59) is loosened, and in this state, the annular support (51) is utilized by using the locking hole (58) formed therein. Rotate. Since the bearing support (8) is in a pair of threads with the annular support (51) and is in a pair of up and down with the roller support (5), the bearing support (8) has the above annular shape. As the support body (51) is rotated, the support body (51) moves up and down. When the fixing bolt (59) is tightened after the above adjustment, the screw portion (84) of the bearing support (8) and the annular support (5) are tightened.
The threaded portion (54) of 1) is locked, and the roller support body (5) and the bearing support body (8) are prevented from moving up and down.

Since the rotating shaft (41) of the pressing roller (4) is supported by the bearing supports (8) and (9) in a spherical pair state, the bearing supports (8) and (9) are adjusted during the above adjustment. The mutual distance between the bearings will change, but since the adjustment amount is small, it can be absorbed by the slip between the rotary shaft (41) and the spherical bearing (90). Therefore, the bearing supports (8) and (9) are not adversely affected.

In this embodiment, the roller support frame (5) is a roller support frame (5) that moves up and down by the cylinder (6), and the mounting table (2) is rotated.
A structure may be adopted in which the mounting table (2) can be moved up and down and the roller support frame (5) equipped with the pressure rollers (4) and (4) is rotated.

[Brief description of drawings]

FIG. 1 is an explanatory view of a rolling pressing device according to an embodiment of the present invention, and FIG.
1 is a view taken along the line AA of FIG. 1, FIG. 3 is an explanatory view of the pressure roller portion and the bearing support of FIG. 1, and FIG. 4 is a line C- of FIG.
A view from the direction of arrow C, FIG. 5 is an explanatory view of a rolling pressing device of a conventional example, and FIG. 6 is an explanatory view of a pressed state of an annular plate body (B) by a rolling pressing device of a conventional example. (B) …… Annular plate (2) …… Mounting table (4) …… Pressing roller (5) …… Roller support frame

Claims (2)

[Scope of utility model registration request] 1. A mounting table (2) for mounting an annular plate (B), which is an object to be corrected, a roller support frame (5) provided above the mounting table (2), The roller support frame (5) is provided with pressing rollers (4), (4) radially arranged on the lower surface of the roller support frame (5) and supported at both ends by the roller support frame (5). (5) is provided so as to be able to come into contact with and separate from and relative to the pressure roller (4) and (4) while the annular plate body (B) is being pressed by the pressure rollers (4) and (4). In a rolling pressing device for an annular plate body of a type in which the table (2) is relatively rotated,
The central end of each pressing roller (4) is supported by the same supporting portion, and the supporting portions at both ends of the pressing rollers (4), (4) are vertically swingable supporting portions and are described above. A rolling pressing device for an annular plate body, in which the height of a central support portion can be adjusted. 2. The rolling pressing device for an annular plate according to claim 1, wherein the pressing rollers (4), (4) are tapered rollers having a diameter increasing from the inside to the outside.