JPS6362363B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for cutting the end face of a plate, and more specifically, an object of the present invention is to provide a method for accurately and continuously cutting the end face of plywood or the like having a thickness of 15 mm or less.

Conventionally, when cutting the end face of a plate material, as shown in FIG.
Generally, the end face of the plate material 1 is cut with the cutter knife 3 while the plate material 1 is being transported, but if the plate material 1 is made of plywood or the like with a thickness of 15 mm or less, the end surface 5 of the plate material 1 may be cut due to the external stress of the cutter knife. It had the disadvantage that it was open at the top and bottom and vibrated along with it, making it impossible to accurately cut the machined surface.

The present invention has been made to solve such conventional drawbacks, and when cutting the end face of a plate using a cutter knife, the end face of the plate in the part cut by the cutter knife is complemented with the shape of the cutting edge of the cutter knife. This invention relates to a method for cutting the end face of a plate material by continuously cutting a cutter knife using a pair of upper and lower press rolls that do not contact the knife or a press bar so as to sandwich a cutter knife.

The present invention will be explained in more detail below with reference to the drawings. FIG. 2 is a schematic diagram showing a cutting device according to the present invention.

In the figure, 1 is a plate material 2 is a transport belt, 3 is a cutter knife, 4 is a press roll or a press bar,
Reference numeral 5 indicates the tapered portion of the presser roll or presser bar, and 7 indicates the height of the tapered portion of the presser roll or presser bar.

In the present invention, while the plate material 1 is conveyed by a pair of upper and lower transfer belts 2 on the left and right sides of the plate material 1, the end surface 5 of the plate material is continuously cut by a cutter knife 3 installed at a predetermined position on the end surface 5 of the plate material. Furthermore, a presser roll or presser bar 4 is installed adjacent to the transfer belt 2.

In the present invention, the presser roll or presser bar 4
It is necessary to press the upper and lower surfaces of the plate material 1 so that the taper portion height 7 of the presser roll or presser bar 4 protrudes from the end surface 5 of the plate material 1 toward the cutter knife side. This is because if the plate material is cut while protruding from the presser roll or presser bar 4, the upper and lower surfaces of the plate material will vibrate due to the external stress of the cutter knife during cutting. First of all, it is impossible.

These drawbacks are not a problem as long as the material is strong enough to suppress the external stress of the cutter knife, but they cannot be avoided in the case of wooden boards such as plywood with a thickness of about 15 mm or less. Therefore, when joints such as finger joints and scarf joints are used, unevenness occurs at the joints between the plates.

However, in the present invention, if the upper and lower surfaces of the plate material 1 are pressed too strongly, the conveyance of the plate material 1 will not be smooth, and the cutting surface 5 will curve inward, making it impossible to perform accurate cutting. Therefore, it is preferable that the presser roll or presser bar 4 be a presser roll that rotates as the plate material 1 is conveyed.

Note that a taper 6 is provided on the side surface of the presser roll or presser bar 4, and this taper 6 has a shape that complements the shape of the cutting edge of the cutter knife 3.

As described above, the present invention has the above-described configuration, so that the presser roll or presser bar 4 presses very close to the plate material even during cutting, so that the end surface 5 of the thin plate or plywood may open up and down during cutting or vibrate. Since there is no bending, cutting can be performed with accurate dimensions, and it is particularly effective for processing thin plywood finger joints and scarf joints.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a conventional cutting device, and FIG. 2 is a schematic diagram showing a cutting device according to the present invention. 1...Plate material, 2...Transfer belt, 3...Cutter knife, 4...Press roll or presser bar, 5...End face of plate material, 6...Taper of presser roll or presser bar, 7...Press roll or presser bar Taper height of the presser bar.

Claims (1)

[Claims] 1. When cutting the end face of a plate using a cutter knife, use a pair of upper and lower press rolls or a press bar whose shape complements the shape of the cutter knife's cutting edge but does not make contact with the knife. A method for cutting the end face of a plate material, characterized in that cutting is performed continuously by arranging a cutter knife so as to sandwich the cutter knife.