JPH064982Y2 - Cold roll stand for thin plate molding - Google Patents

Description

[Detailed Description of the Invention] Industrial field of use The present invention relates to an improvement of a roll stand of a cold roll forming machine used for forming a thin plate, and a bearing box of a forming roll shaft serves as a roll stand to simplify the structure. The present invention relates to a cold roll stand for forming a thin plate, which can be made compact and lightweight, can be easily provided at low cost, can support a plurality of roll shafts in one stand, and can be easily unitized in a forming line configuration.

BACKGROUND ART A cold roll forming machine can form a wide variety of shapes from a strip material such as a steel plate by selecting a forming roll, and is widely used as a machine processing machine indispensable for all industrial production today.

As a minimum unit of this cold roll forming machine, there is a roll stand that pivotally supports a pair of upper and lower forming roll shafts, but conventionally, in order to allow relative adjustment of the upper and lower forming roll shafts, namely, A substantially U-shaped roll stand is used to allow the bearing box of the forming roll shaft to move up and down within the slide frame.

Referring to FIG. 4, the bearing boxes (7) and (8) mounted on the ends of the roll shafts (5) and (6) form a substantially U-shape of a pair of rectangular roll stands (1). The bearing box (7) of the lower roll shaft (5) is fixed to the lower limit of the slide frame (2), and the bearing box (8) of the upper roll shaft (6) is a removable roll stand. It is fixed to the tip of the screw shaft (4) that can be screwed forward and backward by inserting the head (3) of (1), and the upper and lower forming roll shafts (5) and (6) are relatively positioned between the shafts. The distance is adjustable.

The conventional roll stand adopts the above configuration not only when the material to be molded is thick but also when it is a thin plate.

However, since such a structure is composed of a slide frame in the vertical direction and a bearing box that fits in the slide frame and slides vertically, the number of parts is generally large, and high processing accuracy is required, which is inevitably expensive. In particular, a cold roll stand for forming a thin plate, which has a simple structure and is inexpensive, has been earnestly desired because a roll stand for forming a thin wall, which has an extremely small axial distance correction, is the same.

SUMMARY OF THE INVENTION In view of the current situation, the present invention aims at a forming roll stand that can be easily reduced in size and weight and can be provided at a low cost. Furthermore, a plurality of roll shafts can be pivotally supported on the stand, and a forming line configuration can be unitized. Aiming at a cold roll stand for forming a thin plate which is easy.

Configuration and effect of the invention This invention is a cold roll stand for thin-walled plates in which the upper and lower forming roll shafts are axially supported so that the axial distance between them can be relatively adjusted and a plurality of stages are arranged in the forming line direction. A lower bearing box for accommodating bearings is not installable in the forming line direction, and has a configuration in which at least one lower forming roll shaft is pivotally supported. An upper forming roll is formed on the flat upper surface of the lower bearing box. A cold roll stand for thin-walled plates, wherein an upper bearing box for supporting a shaft bearing is hinged at one end in the line direction and the other end is mounted so as to be height-adjustable via a spring.

In this invention, one end of the bearing box of the upper roll shaft is pivotally supported on the upper end surface of the lower bearing box that houses the bearing of the lower forming roll shaft, for example, by a hinge, and the other end is screwed by, for example, a spring. The upper and lower bearing boxes may have a hinged configuration and a vertically movable configuration.
In addition to the configuration of the embodiment, any known configuration can be used.

In this invention, the bearing box of the upper and lower forming rolls serves as a stand, so that the structure is simple, the number of parts is extremely small, and it is easy to reduce the size and weight. It can be provided at low cost.

Further, the roll stand according to the present invention can be applied not only to the case where both ends of a normal roll shaft are fixed, but also to a so-called cantilever structure, and any method of driving the roll shaft can be adopted.

Also, the axial distance between the upper and lower forming roll shafts is adjusted by the opening angle of the upper bearing box that is hinged to the lower bearing box. Not only is it necessary to make adjustments at each stand, which is complicated, but the adjustment cost is small and it requires a considerable amount of skill, but in the configuration of the present invention, a spring is interposed in the mechanism for adjusting the distance between the vertical roll axes. Since the rolling force can be set by the spring force, it can follow the changes in the plate thickness of the molding material.
The change in the forming load direction is small, and no adjustment is required to change the plate thickness, and there is an advantage that the influence on the forming accuracy can be almost ignored.

Disclosure of the Invention Based on the Drawings FIG. 1 is a partially cutaway front view of a roll stand according to this invention, and FIG. 2 is a vertical side view of the same. FIG. 3 is a front view showing another embodiment of the roll stand according to the present invention.

The forming roll stand shown in FIGS. 1 and 2 is a roll stand that pivotally supports a pair of upper and lower forming roll shafts.

The roll stand according to the present invention comprises a pair of upper and lower bearing boxes that support both ends of the forming roll shaft.

The lower bearing box (10) is formed of a rectangular plate, a flange (11) for fixing to a base or the like is provided on the lower end surface portion, the upper end surface is a flat surface, and the downstream side of the molding line, A hinge portion (12) is provided at the left end in the figure, and a bearing (13) for fixing the lower forming roll shaft (40) is fitted near the upper center of the main surface.

The upper bearing box (20) is a deformed plate whose lower end surface is a flat surface, and has a bearing (2) that locks the upper forming roll shaft (41) at the center of the main surface.
1) is fitted, and one of the lower ends is pivotally supported by the hinge portion (12) of the lower bearing box (10) by a pin.

Further, at the end of the upper bearing box (20) opposite to the hinge part (12), a vertical hole (22) provided with a spring seat (23) is provided on the upper side.
Is drilled, and further, a screw hole (14) is provided on the upper end surface of the lower bearing box (10) relative to the hole (22), and the spring (24) is provided in the hole (22). Insert the adjusting bolt (25) through the screw and screw it into the screw hole (14), and by moving the adjusting bolt (25) forward and backward, the height of the upper bearing box (20) centering on the hinge (12) will be increased. Adjustment, that is, the distance between the upper and lower roll axes can be adjusted.

As described above, since the upper and lower bearing boxes (10) and (20) of the upper and lower forming roll shafts serve as a stand, the structure is simple, the number of parts is extremely small, and it is easy to reduce the size and weight. It can be provided at a very low cost, with few required parts.

In addition, the distance between the upper and lower forming roll shafts is determined by the lower bearing box (10).
Adjust with the opening angle of the upper bearing box (20) that is hinged to
The adjustment range is thin for thin plates, and since a spring is interposed in the mechanism for adjusting the distance between the upper and lower roll axes, the rolling force can be set by the spring force, and the changes in the plate thickness of the forming material can be followed. Therefore, it is not necessary to adjust the thickness of the molding material.

The cold roll stand according to the present invention shown in FIG. 3 is capable of forming several stages of roll stands into one unit in the case of a cold roll forming machine having several tens of stages.

That is, a plurality of lower bearing boxes having the same structure as that of FIG. 1 described above are connected to form a long plate-shaped lower bearing box (30), and a bearing (31) for the lower forming roll shaft (40) is formed. A plurality of them are arranged in the longitudinal direction, and a hinge portion (3
2) are provided at the required intervals, and each has an upper bearing box (20).
Is attached to a butterfly.

The function and effect of this unitized roll stand are the same as those of the roll stand shown in FIG. Moreover, since a common bearing box is used as a stand, it is possible to further reduce the size and weight. Especially, cold forming of a thin plate requires a multi-stage roll stand. It can be handled and is extremely convenient for installation and roll change.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a roll stand according to the present invention, and FIG. 2 is a longitudinal side view of the same. FIG. 3 is a front view showing another embodiment of the roll stand according to the present invention. FIG. 4 is a front explanatory view of a conventional cold roll stand. 10,30 …… Lower bearing box, 11 …… Flange part, 12,32 …… Hinge part, 13,21,31 …… Bearing, 14 …… Screw part, 21 …… Upper bearing box, 22 …… Hole part , 23 …… Spring seat, 24 …… Spring, 25…
… Adjustment bolts, 40,41 …… Roll axis.

Claims (1)

[Scope of utility model registration request] 1. A cold roll stand for thin-walled plates, in which upper and lower forming roll shafts are axially supported so that the distance between them can be adjusted relatively, and a plurality of stages are arranged in the forming line direction. The lower bearing box that can be installed in the direction of the forming line is configured to support at least one lower forming roll shaft, and the upper surface of the lower bearing box, which is a flat surface, has a bearing for the upper forming roll shaft. A cold roll stand for thin-walled plate forming, wherein an upper bearing box that axially supports a hinge is attached at one end in a line direction thereof, and the other end is mounted so that height can be adjusted via a spring.