JPS63290625A - Roller extrusion method - Google Patents

Abstract

PURPOSE:To form an extrusion part on a plate stock and to save the manufacturing cost of a die, die changing time, etc., by extruding one part on the surface of a plate stock in pressurizing direction by pressing with the outer peripheral face of a roller and moving one part of the plate stock and the roller. CONSTITUTION:A roller 14 and rollers 15a, 15a for blank holder are located at the upper part of a receiving jig 21 and a plate stock 20 is mounted on the upper face of the receiving jig 21. One part of the surface of the plate stock 20 located above a recessed groove 22 is pressed by the roller 14 with constraining the surface of the plate stock 20 located at both sides of the part A to be pressed by the rollers 15a, 15a for blank holder and extruded up to the specified depth. A pressurizing shaft 17 is then moved in the specified amt., the rollers 15a, 15a for blank holder are rotated with constraining the plate stock 20 and moved with extruding the plate stock 20 downwards. The extrusion part 26 extending in the moving direction of the roller 14 is thus formed on the plate stock 20. The depth of the extrusion part 26 is freely varied by varying the extrusion amt. and the length of the extrusion part 26 is freely varied by changing the moving distance of the roller 14.

Description

Detailed Description of the Invention "Field of Industrial Application" This invention is applicable to floors, girders, internal structural members of transformer materials of various shell structural members such as ships and marine structures, and flooring panels such as bulkheads and decks. This invention relates to a roller extrusion method for extruding materials using rollers.

``Prior Art'' As is well known, in order to increase the strength of plate materials used for bulkheads, decks, etc. of ships, a portion of the plate l is recessed in the thickness direction, as shown in Figure 4. A plate material 1 with extruded portions 2 formed by pressing into a groove shape is provided.

In order to form such an extruded part 2 on the plate material 1, conventionally, the plate material l is pressed using a mold having a convex part and a mold having a concave part that engages with the convex part. This is done by extruding a part of the plate l in the thickness direction.

``Problems to be Solved by the Invention'' By the way, in the above-mentioned conventional plate processing method, the extrusion depth of the plate is shown as dimension d in Fig. 4), and the extrusion length is shown as dimension Q in Fig. 4). In order to change the extrusion size, a new pair of molds having four protrusions and four parts corresponding to the extrusion size is required. Therefore, there have been problems in that these molds are expensive to manufacture and that it takes a lot of time to replace the molds.

"Object of the invention" This invention was made in view of the above problems,
To provide a roller extrusion processing method that does not require changing the mold even if the extrusion size of a plate material is changed, and can therefore save mold manufacturing costs, mold replacement time, etc.

"Means for Solving the Problems" The roller extrusion processing method of the present invention applies pressure on a plate material by the outer peripheral surface of a roller rotatably supported around an axis. By moving one of them, the pressurized portion of the plate material is pushed out in the pressing direction of the roller, thereby forming an extruded portion extending in the moving direction on the plate material.

"Example" Hereinafter, a first example of the roller extrusion method of the present invention will be described with reference to FIGS. 1 and 2.

1 and 2 show a roller extrusion processing device used in this embodiment, and in these figures, reference numeral 10 indicates a roller holding portion.

This roller holding part 10 has a substantially U-shaped cross section with an open lower end in the figure, and bearings 12 and 1 are provided on opposing walls.
2 is fixed. This bearing 12°12 has a rotating shaft 1
3 is rotatably supported, and a disk-shaped roller 14 is fixed to the center of this rotating shaft 13 with a part of it protruding downward in the figure from the lower end of the roller holding part 10. .

Further, shafts 15.15 are formed at the lower end of the wall portion of the roller holding portion 10, and extend from the wall portion in the left-right direction in FIG. , 15a are attached so as to sandwich the roller 14 and to be rotatable in the same direction as the roller 14.

Furthermore, a support part 16 in the form of a dowel is fixed to the center of the upper surface of the roller holding part 10, and this support part 16 is attached to a pressurizing shaft 17.

This pressure shaft 17 is movable vertically and horizontally in FIG. 1, and by moving this pressure shaft 17 vertically and horizontally, the roller 14 is It can be moved vertically and horizontally.

Further, on the table 19 located below the roller holding section 10, a jig 21 is fixed as a receiver for holding the plate material 20, and the jig 21 has a first A groove 22 extending in the left-right direction in the figure (direction perpendicular to the plane of the paper in FIG. 2) is formed.

Next, a method of extruding the plate material 20 using the roller extrusion processing device described above will be explained.

First, the roller 14 and the wrinkle pressing roller 15a.

15a is placed above the jig 21 via the roller holder 10 and the pressure shaft 17, and the receiver is placed on the upper surface of the jig 2I.
Place 0. Next, by lowering the pressure shaft 17, the roller 14 and the wrinkle pressing rollers 15a, 15a are lowered.

Then, while the surface of the plate material 20 located on both sides of the pressurized portion is restrained by the wrinkle pressing rollers 15a and I5a, the part of the surface of the plate material 20 located above the groove 22 is restrained by the outer peripheral surface of the roller 14. is pressurized to push out the pressurized portion A downward in the figure to a predetermined depth. Furthermore, in this pressurized state, the pressurizing shaft 17 is moved to the right in FIG. 1 by a predetermined distance.

Then, the wrinkle pressing rollers 15a and I5a rotate clockwise while restraining the plate material 20, and the roller 14 rotates clockwise and moves to the right while pushing the plate material 20 downward with its outer peripheral surface. In this way, the extruded portion 26 extending in the moving direction of the roller 14 is formed on the plate material 20.

According to the above-mentioned roller extrusion processing method, a part of the surface of the plate material 20 is pressed by the outer peripheral surface of the roller 14, and this pressed portion A is pushed out in the pressing direction to move the roller 14. Since the extruded portion 26 extending in the moving direction of the roller 14 is formed, the pressurized portion A
The extrusion depth of the extrusion section 26 can be freely changed by changing the extrusion amount of the roller I =
By changing the moving distance of the extruder 1, the extrusion length of the extrusion section 26 can be freely changed. Therefore, there is no need to change the mold every time the extrusion size such as the extrusion depth and extrusion length of the extrusion section 26 is changed, unlike in the past, thereby saving mold manufacturing costs, mold replacement time, etc. Be able to do it.

Moreover, if the direction of pressure applied to the plate material 20 by the roller 14 is changed,
The extrusion direction of the extrusion part 26 can be freely changed,
Therefore, it is possible to form an extruded portion having a complicated shape such as a curved surface.

Furthermore, it is possible to control the amount of movement of the roller 14 in the vertical and horizontal directions in FIG. 1 by NC control.

Next, a second embodiment of the roller extrusion method of the present invention will be described with reference to FIG.

FIG. 3 shows a roller extrusion processing device used in this embodiment. This roller extrusion processing device is different from the roller extrusion processing device shown in FIGS. 1 and 2 in that the roller 14 is fixed. This is because the extruded portion 26 is formed in the plate material 20 by moving the plate material 20.

That is, the pressure shaft 17 is movable only in the vertical direction, and therefore the roller 14 is movable in the vertical direction, but is not movable in the horizontal direction. Further, a slide groove 30 is formed in the center of the table 19 and extends in a direction perpendicular to the plane of the paper in the figure, and the bone is inserted into the jig 2.
A sliding portion 31 is formed in the center of the lower surface of 1. The sliding portion 31 is slidably fitted into the sliding groove 30.

To perform extrusion processing using the roller extrusion processing device, a part of the surface of the plate material 20 is pressurized by the outer peripheral surface of the roller 14, and the pressed portion A is pushed out downward in the figure to a predetermined depth. In this pressurized state, the receiver moves the jig 21 by a predetermined amount along the slide groove 30 to move the plate 20, thereby forming an extrusion part 26 on the plate 20 that extends in the direction of movement of the plate 20. Form.

According to the roller extrusion method described above, the same effects as in the first embodiment can be obtained.

"Effects of the Invention" As explained above, according to the roller extrusion processing method of the present invention, a part of the surface of the plate material is pressed by the outer peripheral surface of the roller, and this pressed part is extruded in the pressing direction. By moving either the roller or the plate material, an extruded part extending in the above-mentioned movement direction is formed on the plate material, so that the extrusion depth of the extruded part can be changed by changing the amount of extrusion of the pressurized part. The extrusion length of the extrusion section can be freely changed by changing the moving distance.

Therefore, unlike conventional methods, there is no need to change the mold every time the extrusion size such as the extrusion depth and extrusion length of the extrusion section is changed, which saves mold production costs and mold replacement time. .

Further, by changing the direction in which the roller presses the plate material, the extrusion direction of the extrusion part can be freely changed, and therefore, it is possible to form an extrusion part having a complicated shape such as a curved surface.

Further, it is possible to control the extrusion depth of the extrusion section, the movement type of the roller 14 in the extrusion length direction, and the movement type of the plate material in the extrusion length direction by NC control.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the roller extrusion processing method of the present invention. 1 and 2 show the roller extrusion processing device used in the first embodiment, FIG. 1 is a sectional view, and FIG. 2 is a cross-sectional view in FIG.
(2) Linear cross-sectional view Figure 3 is a cross-sectional view of the roller extrusion processing device used in the second embodiment, and Figure 4 is a perspective view of a plate material processed by a conventional processing method. 14...Roller, 20...Plate material, 26...
...Extrusion section. LII Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] By applying pressure on the plate material with the outer peripheral surface of a roller supported rotatably around an axis and moving either this roller or the plate material, the pressed portion of the plate material is pressed by the roller. A roller extrusion processing method characterized by forming an extruded portion extending in the moving direction on the plate material by extruding in the pressing direction.