JPH0313926B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a technique used to continuously manufacture a perforated metal plate in which a large number of holes are formed over the entire surface of the metal plate.

[Prior art] Conventionally, when making a large number of holes on the entire surface of a metal plate,
This was done by punching with a press etc.
There were disadvantages in that punching waste was produced, resulting in material loss due to the punching waste, and burrs were formed when punching was performed.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned points, and an object of the present invention is to create a hole that can be reliably drilled without material loss and that does not produce burrs. The present invention provides a method for manufacturing a metal plate.

[Means for Solving the Problems] The method for producing a perforated metal plate of the present invention involves continuously feeding a metal plate 1, making holes 4 with a perforation roller 3 having a large number of protrusions 2, and then It is characterized in that the burr 6 with holes 4 made therein is folded back using a jig 5, and then rolled by a rolling roller 7 so that the burr 6 bites into the metal plate 1 to have a uniform thickness over the entire surface.

[Function] When punching holes 4 in metal plate 1, a portion that would normally be punching waste is formed as a barb 6, and this barb 6 is folded back to a portion other than the hole 4, and the barb 6 is rolled into the metal plate 1. The perforated metal plate 8 can be produced without punching waste and without material loss.

[Example] Reference numeral 3 is a perforation roller, and a large number of sawtooth projections 2 are arranged in rows in the circumferential direction and the width direction on the outer periphery.
In other words, as shown in Figure 1, there are serrated protrusions 2 on the outer periphery.
A plurality of rows are provided along the entire circumference in the circumferential direction at appropriate intervals in the width direction. A receiving roller 11 such as a rubber roller is arranged above the perforating roller 3 and parallel to the perforating roller 3.
The perforating roller 3 and the receiving roller 11 are brought into contact with each other. The shafts at both ends of the punching roller 3 and the receiving roller 11 are rotatably supported by bearing plates 12, respectively. A catching jig 5 is disposed in front of this receiving roller 11 (with the direction of movement of the metal plate 1 as the front), and this catching jig 5 has a diamond-shaped cross section and has an acute angle at the lower end. It is pointed. A cradle 13 is placed below the catching jig 5 through a gap of the thickness of the metal plate 1.
are arranged, and both ends of the pedestal 13 are held together, and both ends of the jig 5 are connected by a connecting plate 14. In front of this pulling jig 13 is a pair of rolling rollers 7.
are arranged one above the other, and the shafts at both ends of the rolling roller 7 are rotatably supported by bearing plates 15.

In manufacturing the perforated metal plate 8, a metal plate 1 such as a steel plate, an aluminum plate, a copper plate, etc. is continuously fed from before the perforation roller 3, and the metal plate 1 is passed between the perforation roller 3 and the receiving roller 11. Supply between.
Then, the rotating hole punching roller 3 and receiving roller 11
As shown in FIG. 2, the metal plate 1 is
A large number of holes 4 are made in the longitudinal direction and the width direction, and the return 6 for making holes 4 in each hole 4 is the third hole.
Formed as shown in the figure. When making a hole 4 in the metal plate 1, the metal plate 1 passes between the hole-making roller 3 and the receiving roller 11 as shown in FIG. is elastically recessed to smoothly open the hole 4 and form the burr 6. The metal plate 1 with holes 4 drilled therein is continuously fed as it is to the pulling jig 1.
3 and the pedestal 13, and the barb 6 hits the tip which is the lower end of the pulling jig 5, and the barb 6 is folded back as shown in FIG. Next, this metal plate 1 is fed between a pair of rolling rollers 7 and rolled. Then, as shown in FIG. 6, the metal plate 1 is rolled thin and stretched, and the burrs 6 bite into the metal plate 1 integrally, forming a perforated metal plate 8 without burrs. This perforated metal plate 8 has a band-like shape as a whole, and has holes 4 formed therethrough extending vertically over the entire surface, and is used, for example, as a core material of a resin-coated metal plate 9 as shown in FIG. . Resin coated metal plate 9
, the entire surface of both surfaces of the perforated metal plate 8 is coated with a synthetic resin 10 such as polyvinyl chloride using an extrusion molding machine or the like. When this resin-coated metal plate 9 is formed, the synthetic resins 10 on both sides are connected together through the holes 4 of the perforated metal plate 1, and the synthetic resins 10 on both sides firmly adhere to both sides of the perforated metal plate 8. A resin-coated metal plate 9 is obtained in which the synthetic resin 10 does not peel off. The resin-coated metal plate 9 thus formed has a band-like shape. This resin-coated metal plate 9 can be cut to an appropriate length and used as a building board, bent into a gutter shape and used as a rain gutter, or used for various other purposes.

[Effects of the Invention] As described above, the present invention makes holes in a metal plate using a perforation roller, folds back the holes after the holes are made with a pulling jig, and rolls the holes with a rolling roller to form a metal plate. Since the hole is drilled to make the thickness uniform over the entire surface, it is not only possible to ensure that the hole is drilled, but also to allow the burrs created by drilling to bite into the metal plate and expand the metal plate by the amount of material for this burr. It is a material that can be rolled, and it is possible to eliminate material loss by effectively utilizing the punching scraps that come out, and it is also easy to handle in the next process because it does not produce burrs, and when it is further rolled. The holes allow for uniform rolling by correcting variations in elongation.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an apparatus for implementing the method of the present invention;
Figure 2 is a cross-sectional view showing the state in which a hole is made in the same metal plate with the hole-making roller, Figure 3 is a cross-sectional view showing the state in which the hole is made with the same hole-making roller in the above, and Figure 4 is a cross-sectional view showing the state in which the hole is made with the same hole-making roller as above. FIG. 5a is a cross-sectional view showing the state of turning back and rolling the same as above, FIG. 5b is a cross-sectional view of the state of turning back, and FIG. The figure is a cross-sectional view showing the perforated metal plate obtained as above, and FIG. is a hole punching roller, 4 is a hole, 5 is a pulling jig, 6 is a return,
7 is a rolling roller.

Claims (1)

[Claims] 1. Continuously feed a metal plate to make holes with a perforation roller having a large number of protrusions, then fold back the holes after making holes with a pulling jig, then roll with a rolling roller to make the holes into metal. A method for producing a perforated metal plate, characterized by making the thickness uniform over the entire surface by biting into the plate.