JPH0321791Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial field of application) This invention relates to a mold used when continuously pressing metal strips, and belongs to the industrial field of manufacturing, sales, and use of press machines.

(Prior Art) Conventionally, press forming was limited to short objects, and rolling was common for long objects.

(Problems to be solved by invention) Complicated equipment was required to roll long metal materials into wide strips (Special Publications No. 58-
No. 3761). Therefore, high-speed continuous pressing may be considered, but in this case, unless some innovation is made to the shape of the clamping surface of the upper or lower mold, not only will the pressing force increase significantly, but the desired cross-sectional shape will not be achieved. There was a problem that it was difficult to obtain a continuous metal strip.

(Means to solve the problem) However, this invention makes it possible to hold a metal strip with a relatively small pressing force by making one of the clamping surfaces of the upper mold or the lower mold flat and the other a convex surface. They succeeded in continuous molding.

That is, this invention is a mold used when forming a metal strip by machining and separating a lower mold and an upper mold from the top and bottom directions at high speed. The clamping surface of the mold is flat, and the clamping surface of the other mold has a central part parallel to the traveling direction of the metal strip that is high, a direction perpendicular to the traveling direction of the metal strip that has a central part that is high, and both sides The mold is constructed by gradually lowering the height in a planar manner and decreasing the degree of decline in the perpendicular direction in the direction parallel to the direction of travel of the metal strip, so that the metal material can be easily moved in the width direction by pressure processing. It is press-molded.

One of the molds mentioned above has a high central portion and low side portions, but a groove of a predetermined width may be provided in the central portion. In such a case, a product with a convex cross section can be press-molded. Regarding the lower mold and the upper mold described above, there are cases in which only the upper mold is brought into contact with each other, and cases in which both the lower mold and the upper mold are brought into contact and separated by linear reciprocating sliding.

(Function) According to this invention, either the lower mold or the upper mold has one of the clamping surfaces made flat and the center of the other clamping surface high, so that the clamping surface of the lower mold and the upper mold can be raised in the direction perpendicular to the direction of movement of the metal strip. Since the metal strip is gradually lowered in a planar shape and raised successively in a direction parallel to the direction of movement of the metal strip, the metal strip can be easily deformed by pressing force, and the mold clamping surface can be easily processed or modified. .

(Example 1) Next, an example of this invention will be described based on the drawings.

That is, in Figures 1 and 2, the thickness is 3.5 mm,
A copper strip 1 having a width of 50 mm is intermittently fed between a lower mold 2 and an upper mold 3. The upper surface of the lower mold 2 is a flat surface, and the lower surface of the upper mold 3 has a convex cross section perpendicular to the traveling direction of the copper strip 1.
The shape of the lower surface gradually changes from a convex surface to a flat surface in the direction of travel, and the left and right sides of the convex surface are inclined to form a flat surface.

Further, in the center of the lower surface of the upper mold 3, a groove 4 having a width of 27 mm and a depth of 1.5 mm is provided parallel to the direction of movement of the copper strip 1 (the entrance of the groove is deep).
When the copper strip 1 is pressurized at 600 to 800 cycles per minute by the upper mold 3 and the lower mold 2, the copper strip 1 first changes from the shape 1a in FIG. 3 at position A. It is molded as shown in 1b at position B in the figure, and
At the position 1c, it is formed into a product metal strip 7. Since the processing speed in the above embodiment is about 3 m/min, the copper strip 1 is
You will be hit with 800 cycles.

(Example 2) Next, FIGS. 4 and 5 will be explained.

In this embodiment, the lower mold 2 is the same as in the first embodiment, but the upper mold 5 has a different cross-sectional shape. The lower surface of the front end of the upper mold 5 (copper strip insertion side) has a cross section perpendicular to the traveling direction of the copper strip 1 (arrow 6) formed in a convex arc shape, and as it goes in the traveling direction of the copper strip 1, The shape of the lower surface gradually changes from a convex arc surface to a flat surface, and the left and right sides of the convex arc surface are inclined in a planar manner. The copper strip 1 is formed by the upper and lower molds 2 and 5.
If the pressure is applied at 600 to 800 cycles per minute, the copper strip will reach the 5th position at each position A, B, C, D, E, and F in Figure
The metal strips are processed into cross-sectional shapes 1a, 1b, 1c, 1d, 1e, and 1f in the figure, and a product metal strip 7 having a shape 1g is produced at the final G position. The processing speed in the above embodiment is about 3 m/min.

(Effect of the invention) That is, according to the mold of this invention, it is possible to easily spread the metal material in the width direction using a long metal material press machine. effective. Furthermore, since the final side of the clamping surface of the mold is flat, finishing of the clamping surface is easy and high precision can be maintained. Furthermore, the tensile strength of the metal strip can be increased due to repeated press working.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of this invention in use, FIG. 2 is an upward perspective view of the upper mold,
FIG. 3 is a cross-sectional view of the workpiece material at each point A, B, and C in FIG. 1, FIG. 4 is a perspective view of another embodiment in use, and FIG. It is a sectional view of the workpiece material at each point A, B, C, D, E, F, and G. 1... Copper strip material, 2... Lower mold, 3, 5...
... Upper mold, 7... Product metal strip.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. In a mold used when forming a metal strip by pressurizing and separating a lower mold and an upper mold from the vertical direction at high speed, either the lower mold or the upper mold The clamping surface of one of the molds is flat, and the clamping surface of the other mold is raised at the center parallel to the direction of travel of the metal strip, and the height increases as the distance from the center increases in the direction perpendicular to the direction of travel of the metal strip. Mold for forming a long metal strip 2, which is formed with a groove of a predetermined width in the center of the other mold. A mold for forming a long metal strip according to claim 1 of the patent registration claim.