JPH0519152Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a caulking cutter blade for forming a caulking piece by notching the contacting vertical portion of two steel plates of a deck plate.

<Prior art> For example, when forming a caulking piece 3 by cutting out the vertical portion 2 of a deck plate 1 where two steel plates are in contact, a part of which is shown in FIG. As shown in FIGS. 11 to 11, a pointed cutter blade 5 is provided protruding from the outer peripheral surface of the cutting roll 4,
A caulking piece 7 is formed by the cutter blade 5 on a part of the vertical portion 2 of the deck plate 1 passing between the and the receiving roll 6, and this caulking piece 7 is attached to a bending bar 8 and a pair of bending rolls 9. , 10 were bent and the vertical portion 2 was caulked.

<Problem to be solved by the invention> However, when the deck plate 1 is simply notched with the pointed cutter blade 5 shown in FIG.
Since a large initial cut piece 11 is formed around the caulking piece 7 and the area around the caulking piece 7 is greatly damaged, the strength of the deck plate 1 is weakened and rust is more likely to occur.

The present invention relates to a completely new technique developed in view of these conventional problems.

<Means for Solving the Problems> The present invention has a linear cutting edge part a protruding from the front side of the most extreme top, and a rectangular cutting blade part b connected to the rear side of the top part, and this cutting blade part b. A triangular cut-down blade c with a gentle slope on the rear side and a square piece upright part d provided vertically are connected, and the tip blade part a of the top part has a vertical or steep slope on the front side. This is a cutter blade for caulking a deck plate characterized by having a triangular leading edge part e arranged in series.

<Function> As described above, in the present invention, since the linear tip blade is provided protrudingly at the top of the tip, this tip blade first bites into the deck plate and cuts it, and then the tip of the tip of the tip cuts the deck plate. Since the rectangular incision blade part is connected to the
This cutting blade part cuts open the part cut by the tip blade part, and a triangular cutting blade with a gentle slope is provided on the rear side of the top part, so that this part The slit section of the deck plate is cut in the flow direction to form a triangular caulking piece, and the cutting blade has a rectangular vertical standing section connected to it, so that the above-mentioned The caulking piece formed as shown in the figure can be curved outward and erected, and furthermore, the front side of the cutter blade is provided with a substantially triangular leading edge part having a vertical or steep slope at the tip end part of the top part. Therefore, by using this leading edge part, it is possible to form a small minimum initial cut piece continuously connected to the caulking piece.

<Example> To specifically explain one embodiment of the cutter blade according to the present invention with reference to the drawings, in FIGS. 1 to 5, 12 is the cutter blade according to the present invention, and the cutting roll 13 is removably attached to the outer surface of the

The structure of this cutter blade 12 is particularly clear in FIG. A triangular cut-down blade c with a gentle slope and a square piece upright part d provided perpendicularly are successively provided on the rear side of the blade part b, and a vertical or It is constructed by consecutively providing triangular leading edge portions e with steep inclinations.

The cutter blade 12 thus constructed is configured to be detachably attached to four pits provided on the circumference of the cutting roll 13.

To explain the operation of the cutter blade 12 according to the present invention, as shown in FIG. 3 to FIG. The tip part a of the cutter blade 12 first hits the vertical part 2.
The incision blade part b deeply enters the vertical part 2, and then, as the cutting roll 13 rotates, the cutting blade c cuts down the vertical part 2 in the flow direction of the deck plate 1 to form the caulking piece 14, Subsequently, the caulking piece 14 can be curved outward by the square piece upright portion d. On the other hand, when forming the caulking piece 14 as described above, the part continuous to the caulking piece 14 of the vertical part 2 is formed by the leading edge part e continuous to the front side of the tip edge part a at the top of the cutter blade 12. A small initial cut piece 15 is formed by cutting down.

The cutter blade 12 in the present invention is as described above,
The upright angle of the leading edge part e is an acute angle close to vertical, whereas the cutting blade c is formed with a gentle slope, so the length of cutting down the vertical part 2 is the same for both. Therefore, as shown in FIGS. 6 and 7, the initial cut piece 15 formed by the leading edge part e is an extremely smaller cut piece than the caulking piece 14 formed by the cutting edge c.

<Effects of the invention> Since the cutter blade according to the invention has the structure as described above, it can smoothly cut the vertical part of the deck plate to form a caulking piece, and has the structure and function as described above. Therefore, the cut around the caulking piece can be made as small as possible, thereby making the initial cut piece smaller, without impairing the strength of the deck plate, and reducing the occurrence of rust. It has features such as being able to reduce vibration and noise generated during caulking work.

[Brief explanation of the drawing]

1 and 2 are perspective explanatory views of the cutter blade according to the present invention, FIGS. 3 to 7 are explanatory views for use, and FIG. 8 is a perspective view showing the caulking part of the deck plate.
FIGS. 9 to 11 are explanatory diagrams showing conventional examples. 1 is the deck plate, 2 is the vertical part, 3, 7, 1
4 is a caulking piece, 4, 13 is a cut roll, 5,
12 is a cutter blade, 9 and 10 are folding rolls, 1
1 and 15 are initial cut pieces.

Claims (1)

[Scope of utility model registration request] A triangular shape having a linear cutting edge part a protruding from the front side of the most extreme top, and a rectangular cutting blade part b connected to the rear side of the top part, each having a gentle slope on the rear side of the cutting blade parts b. A cutting-down blade c and a vertically provided square piece upright part d are successively provided, and a triangular leading blade part e having a vertical or steep slope is provided in series on the front side of the tip part a of the top part. A cutter blade for crimping the deck plate.