JPS6257410B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in an apparatus for rolling irregularly shaped strips or plates having a flat plate shape on one surface and a convex portion on the other surface.

Conventionally, it was the first rolling machine for irregular cross-section strips and plates.
As shown in the figure, a rolling roll 1 having a protrusion 4 for rolling formed on its outer periphery and driven by a drive device (not shown) is brought into pressure contact with a workpiece 5 on a flat plate, as indicated by arrows 2 and 2A. It has been proposed that rolling is performed by alternately reciprocating in the directions and rolling in the directions of arrows 3 and 3A mechanically synchronized with this reciprocating movement. In this device, the protrusion 4 is the third
As shown in FIG. 1, they are formed on the outer periphery of the rolling roll 1 over approximately 3/4 of the circumference of the roll 1 so that the size and shape gradually change in the circumferential direction from zero to the maximum. Since two protrusions 4 are formed on the outer periphery of the roll 1, while being rolled and driven on the workpiece 5, as shown in FIG. A convex portion 20 is formed on the surface, and the other surface is rolled into a flat plate shape.

After the roll 1 makes one reciprocation, the workpiece 5 is intermittently sent in the direction of the arrow 6 by a predetermined amount. Figure 2 shows the state in which the workpiece 5 is being rolled by the rolls 1, and the initial E-A cross-section of the process is shown in Figure 4A, and the intermediate Rollo-Ro cross-section is shown in Fig. 4A. It is shown in Figure 4B.

In such a conventional device, the mechanism is complicated and expensive due to the necessity of reciprocating the roll 1 and the entire attached device, and there is a limit to increasing the processing speed due to intermittent rolling.

The purpose of the present invention is to eliminate the above-mentioned drawbacks,
It is an object of the present invention to provide a rolling device for irregular cross-section strips and plates, which can improve rolling efficiency and downsize the device.

The apparatus of the present invention uses a processing die with a groove and a pair of processing heads having a plurality of small diameter rolls or small balls attached radially to the end face, and rotates this processing head to create a gap between the processing die and the processing die. The machine is characterized in that both side edges of the workpiece passing through the machine are rolled in the width direction while being pressed onto a processing die, thereby making it possible to process the workpiece into an irregular cross-section.

Hereinafter, the rolling apparatus according to the present invention will be described with reference to the drawings from FIG. 5 onwards, and parts that are the same as those of the conventional apparatus are designated by the same reference numerals.

In FIG. 5, a workpiece 5 wound around a reel 7 is continuously fed out, finish-rolled by a finishing roll 8, and wound onto a take-up reel 10, but the workpiece 5 is not finish-rolled. A material having been previously rolled by a pair of processing heads 12 and a processing die 13 constituting the irregular cross section rolling device 11 and having a rectangular cross section shown in FIG. It is molded into the irregular cross section shown in FIG. 6B [the Ro-Ro cross section in FIG. 5].

As shown in FIGS. 7 to 9, each of the pair of processing heads 12 has a plurality of small-diameter rolls 15 evenly arranged radially on its horizontal end face perpendicular to its own axis. Each small diameter roll 15 is held so that it can rotate freely. As shown in FIGS. 7 and 8, each machining head 12 faces the same direction, and the center of its rotation axis is aligned with the groove 2 of the construction die 13.
They are arranged in parallel at intervals so as to be located on the lines 25 on both sides of the workpiece 5 after rolling and forming, respectively, in the direction shown by the arrow 14 via the motor 9 and the reducer 21, respectively. It is designed to be able to be rotated.

A machining die 13 cooperating with each machining head 12 is connected to the machining head 12 as shown in FIGS.
A groove 22 of a predetermined width with a depth equal to or slightly larger than the thickness of the workpiece 5 is continuous in the direction of movement of the workpiece 5 on the surface opposite to the end face on which the small diameter roll 15 is disposed. However, the groove 2
The starting end sides of the flat portions 19 defining the slopes 1 and 2 are respectively inclined surfaces 1
8, and the distance between each processing head 12 and the plane on which the small diameter roll 15 revolves gradually decreases in the direction of movement of the workpiece 5.

It is preferable that the distance between the plane on which the small diameter roll 15 of the processing head 12 revolves and the flat part 19 of the processing die 13 can be changed as appropriate depending on the thickness of the thin part of the irregular cross-section material.

In the above configuration, as shown in FIGS. 7 to 9, the workpiece 5 is introduced between the processing head 12 and the processing die 13, and is continuously advanced in the direction of the arrow 6. , each processing head 12
Rolling is performed by driving the rollers to rotate in the direction of the arrow 14 and pressing the small-diameter rolls 15 on the end surfaces of the rollers into pressure contact with the side edges of the workpiece 5, respectively. That is, while the workpiece 5 advances, both side edges of the workpiece 5 are
The small-diameter rolls 15 revolving each receive an inward force and a force directed toward the processing die 13 at a portion 24 indicated by dotted diagonal lines in FIG. Because there is no such thing, it hardly deforms. A portion 23 indicated by solid diagonal lines receives a force directed outward and a force directed toward the processing die 13. At this time, both side edges of the workpiece 5 have grooves 2, respectively.
2, the plurality of small-diameter rolls 1 that each revolve in that part
5, it is gradually stretched outward to become thinner and processed to a predetermined thickness at the plane portion 19. At this time, the center part of the workpiece 5 is subjected to its own rigidity and the pressing force of the processing head 12, so it hardly deforms.
The material is accommodated in the groove 22 of the processing die 13 without changing its thickness. Therefore, while the workpiece 5 moves in the direction of the arrow 6, the convex strip 20 is formed in the center, and both side edges are processed to be thin. During this time, the thin-walled part between the convex part 20 and the outer edge 25 is stretched in the width direction of the material by the outward rolling pressure, so even if there is a difference in elongation between it and the unprocessed part in the center. Almost no ripples occur.

FIG. 10 and FIG. 11 show another embodiment, and the difference from the above embodiment is that in the above embodiment, the processing die 13 is flat and its position is fixed; In the example, processing die 1
6 is constructed of a rotatable roll-shaped member, and a groove 22 is formed on the outer periphery to guide the unrolled portion of the workpiece 5.
is provided in an endless manner.

In the case of this device as well, the workpiece 5 is introduced between the processing head 12 and the processing die 16, and rolling processing of both side edges is performed between the two. In this case, since the processing die 16 is rotatable, the frictional force between the processing die 16 and the workpiece 5 can be greatly reduced.

In the above embodiments, the small diameter roll 15 is used as the spreading pressure member, but the small diameter roll 1
5, a plurality of small balls can be used.

When replacing it with a small ball, the rolling direction of the small ball automatically changes to the direction determined by the relative relationship with the workpiece 5 and the processing head 12 during rolling.
The resistance force (tensile force) applied to the workpiece 5 is greatly reduced.

Furthermore, although the above embodiments have shown the case where the cross section is bilaterally symmetrical, it may be an asymmetrical cross section. In this case, it can be easily implemented by adjusting the tension in the advancing direction during rolling, attaching a material guide, etc.

According to the rolling apparatus typified by the embodiments described above, there is no need to reciprocate the processing part, so
The material can be continuously fed and processed, and together with the ease of increasing the rotation speed of the processing head, high-speed processing is possible. Furthermore, since the processing is localized, the rolling processing section can be consolidated into small blocks, reducing power consumption and the like, and making the structure more compact.

As described above, the rolling apparatus of the present invention has effects such as being able to improve rolling efficiency and downsizing the apparatus.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a conventional irregular cross-section strip and plate during processing using processing rolls in a rolling machine, Fig. 2 is a plan view of the workpiece during the processing of Fig. 4 is a sectional view of each part of FIG. 2, FIG. 5 is an overall equipment layout diagram showing one embodiment of the rolling apparatus according to the present invention, and FIG. 6 is a diagram of the material in FIG. 5. 7 is a plan view of the processing head shown in FIG. 5, FIG. 8 is a side view showing a part of FIG. 7 in section, and FIG. 9 is a front view of FIG. 7.
FIG. 10 is a front view of the same part as FIG. 9 showing another embodiment of the rolling apparatus according to the present invention, and FIG.
FIG. 2 is a side view showing a part of FIG. 0 in cross section. 5: Workpiece material, 12: Processing head, 13 and 1
6: Processing die, 15: Small diameter roll, 18: Inclined surface, 19: Plane part, 20: Convex part, 22: Groove, 2
5: Lateral edge.

Claims (1)

[Scope of Claims] 1. A rolling device for irregular cross-section strips or plates having a flat plate shape on one surface and a convex portion on the other surface, wherein the end surfaces perpendicular to the own axis face the same direction. a pair of machining heads that are arranged in parallel in a direction across the path of the workpiece and each rotatably driven in the direction of movement of the workpiece around the axis; a processing die having a groove on an opposing surface for accommodating the center portion of the workpiece and forming the convex portion, and each end surface of the processing head has a plurality of rotatable dies arranged radially within the plane thereof. The processing die has a small-diameter roll or small ball, and the groove-defining portion of the processing die has a plane whose distance from the plane on which the small-diameter roll or small ball of the processing head revolves gradually decreases in the direction of movement of the workpiece. By advancing the workpiece between the processing head and the processing die, a small diameter roll or a small ball that revolves in contact with the workpiece is pressed onto the processing die to press the workpiece on that side. A rolling device for irregular cross-section strips and plates, characterized in that the edges can be rolled outward. 2. The rolling device according to item 1, wherein the processing die is in the form of a rotatable roll with an endless groove on the outer periphery.