JPS643491Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a flake cutter for cutting metal plates such as aluminum plates and aluminum alloy plates (hereinafter simply referred to as aluminum plates) into strips.

For example, conventional aluminum flakes are
-As described in Publication No. 157763, aluminum flakes with a width of 1 mm, a length of 1.4 mm, and a thickness of 25 μm are made using a rapid solidification method, but the aluminum flakes made by this rapid solidification method are relatively thin. However, there is a drawback that the accuracy of the thickness is not very good.

In addition, since conventional circular cutters only have cutting blades on the periphery, there is a drawback that thin, strip-shaped aluminum flakes cut by the cutter may adhere between the cutter blades. .

In view of the above-mentioned drawbacks that existed when making conventional aluminum flakes, this idea was developed by increasing the thickness of the flakes to produce flakes with a nearly constant thickness, and by preventing the cut flakes from sticking to the cutter. The purpose is to peel off smoothly.

Next, an embodiment of the flake cutter of this invention will be described.

Example 1 As shown in FIGS. 2 and 3, a circular cutter with a width of 3 mm is provided with alternating cutting blades 2 and peeling protrusions 3 lower in height than the cutting blades 2 on the periphery of the cutter. A blade 4 is made, and the cutter 4 adjacent to this cutter blade 4 is provided so that the cutting blade 2 of one cutter blade 4 and the peeling protrusion 3 of the other cutter blade 4 match, and 24 cutters are made. This is a cutter 1 for flakes in which a blade 4 is fixed to a shaft 5.

This cutter 1 for flakes has a large number of cutter blades 4 fixed adjacent to each other, so that cutting blades 2 having a width of approximately 3 mm and peeling protrusions 3 are alternately provided on the surface of the cutter 1 in the rotational direction. At the same time, cutting blades 2 having a width of about 3 mm and peeling protrusions 3 are alternately provided on the axial surface of the cutter 1.

When making flakes using the flake cutter 1 of Example 1, for example, the aluminum plate with a thickness of 0.8 mm is gradually fed at a predetermined speed and the cutter 1 is rotated at a predetermined number of revolutions to cut the aluminum plate. As a result, the cutter has the peeling protrusions 3 of the cutting blade 2 alternately in the rotational direction and the axial direction, so that the aluminum plate is alternately cut and not cut, and the aluminum plate is cut to a length of 3 mm and a width of 3 mm. 0.8mm
(almost the same thickness as an aluminum plate), approximately 50μ thick
Aluminum flakes having a substantially constant thickness are cut with the cutting blade 2, and then the cut flakes are smoothly peeled off from the cutter 1 by the peeling protrusion 3 without adhering to the cutter 1, and fall below the cutter 1. You can make it.

Embodiment 2 As shown in FIG. 4, cutting blades 12 with a width of about 3 mm and peeling protrusions 13 having a height lower than the cutting blades are alternately provided on the surface in the rotational direction of a cylindrical cutter. This cutter 11 for flakes is molded in one piece and has cutting blades 12 having a width of about 3 mm and peeling protrusions 13 alternately provided on the axial surface thereof, and has shafts 15 at both ends.

By using the flake cutter 11 of Example 2 and making flakes in substantially the same manner as in Example 1, flakes having an approximately constant thickness of 3 mm in length, 0.8 mm in width, and 50 μm in thickness were made using the cutting blade 12. , and then the cut flakes are removed from the cutter 1 without adhering to the cutter 11 by the peeling protrusion 13.
It can be made by peeling off more smoothly than in 1 and dropping it below the cutter 11.

One example of the use of flakes made with this flake cutter, such as aluminum flakes, is to add a thermoplastic synthetic resin to the aluminum flakes, heat and knead them, and then form a plate into a plate and use it as an electromagnetic shielding plate.

The cutter for flakes of this invention has thin cutting blades and stripping protrusions that are thin and lower in height than the cutting blades alternately on the surface in the rotational direction of the cutter, and also has narrow cutting blades on the surface in the axial direction of the cutter. The structure is such that the cutting blade and peeling protrusions that are thin and have a lower height than the cutting blade are provided alternately, so the cutting blade cuts flakes with an almost constant shape and thickness, and then the cut flakes are used for peeling. It can be made by peeling off smoothly from the cutter and falling below the cutter without sticking to the cutter due to the protrusion.

[Brief explanation of the drawing]

FIG. 1 is a front view of one embodiment of the present invention, FIG. 2 is a front view of a cutter blade, FIG. 3 is a side view of the same, and FIG. 4 is a front view of another embodiment of the present invention. 1 and 11 are cutters, 2 and 12 are cutting blades, and 3 and 13 are peeling projections.

Claims (1)

[Scope of utility model registration request] The surface of the cutter in the rotational direction is alternately provided with thin cutting blades and peeling protrusions that are thin and have a height lower than the cutting blade. A flake cutter characterized by alternately providing peeling protrusions that are lower in height than the cutting blade.