JPH03256831A - Cutting of corrugated cardboard case - Google Patents

Abstract

PURPOSE:To permit a case to be opened accurately along the cut-off plane without impairing its contents by a method wherein the corner of the bent part of a corrugated cardboard case is cut off by moving a blade along the ridge of the corner. CONSTITUTION:The edge 11 of a blade 10 is penetrated through the corner part 3 of the glue application area 2 of a corrugated cardboard case 1, so that the corner part 3 can be cut off along a cutting plane A. The blade 10 can be maintained at a predetermined angle to the corner part 3 by using a suitable jig or guide to permit the corner part to be cut off desirably. The angle is not restricted, although it is preferably from about 4 to 5 deg..

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] This invention relates to a method of cutting a cardboard box with a knife.

[Prior Art] The demand for cardboard boxes has increased significantly in recent years due to their advantages such as being light and strong, convenient to fold, assemble, open, etc., and reducing packaging and transportation costs. It is widely used for packaging and transporting various products. Like this,
In order to take out a cardboard box packed with a plurality of products, it is necessary to manually open the cardboard box and take out the required quantity or all of the products inside.

In order to remove a product from a cardboard box, it is necessary to open the cardboard box filled with the product without damaging the product.To do this, it is necessary to use a knife such as a cutter to cut the cardboard box, taking into consideration the thickness of the cardboard. Cutting the joints of boxes or any surface of cardboard; Cutting using a guide that extends the edge of a knife by the thickness of the cardboard; Inflating a cardboard box by some means and cutting it with a knife; Cardboard boxes. There are methods such as peeling off the joints by hand.

[Problems to be solved by the invention] However, although such conventional methods can achieve the intended purpose, they require skill and are time-consuming.
Depending on individual differences, there is a risk of damaging the product, especially when cutting a cardboard box with a knife, and when all of these tasks are done manually, it is time consuming and troublesome.
There are problems such as being troublesome.

Therefore, an object of the present invention is to solve the above-mentioned problems in the prior art by using the cutting edge of a cutter to cut around the folding edge formed inside the corner of the folded part of a cardboard box or the corner of a folding board. To provide a method for cutting a cardboard box by which a bent part of the cardboard box can be cut continuously and in a short time by inserting a knife so as to penetrate the cardboard box without damaging the product.

[Means for Solving the Problems] According to the present invention, a method for cutting a cardboard box includes applying a knife at a required angle to the folded portion of the cardboard box or around the corner ridgeline of the folding plate. Insert the blade so that it penetrates at least the corner of the folded part of the cardboard box, and move the knife relatively along the ridgeline of the folded part of the cardboard box to cut the corner of the folded part of the cardboard box. Consists of cutting.

[Function] Accordingly, the present invention uses the method configured as described above to apply the cutter to the folded part of the cardboard box or the corner of the folding plate. The bent part of the corner of the cardboard box can be cut using a knife by inserting the cutter into the vicinity of the folding groove inside the corner of the box.

Other objects, advantages and features of the present invention will become apparent from the detailed description below, taken in conjunction with the accompanying drawings.

[Example] FIG. 1 of the drawings schematically shows a cardboard box to which the cardboard box cutting method of the present invention is applied. This type of cardboard box is used as a general cardboard box, and the double-sided cardboard box is made by cutting sheets of double-sided cardboard, making creases, and joining them with flat joining lines, which are the seams. Packing is completed by putting the contents in the bag, closing the inner and outer fins, and sealing it with duct tape or fasteners. In particular, the cutting method of the present invention is applied to the corners of the joining flat line of the corrugated part of such a corrugated box, and the corners of folding board parts such as the outer fin or inner fin.

For example, first, in the joining flat line, that is, the seam part 2 of the corrugated cardboard box 1 as shown in FIG. 1 and FIG. 1A,
An appropriate blade 10 such as a cutter is positioned along the cutting surface A at an angle of about 45° to the corner 3 of the bent seam part 2 of the cardboard box 1, and the cutting edge 11 of the knife 10 is placed at the seam part 2. The cutting edge 11 penetrates the corner 3 of the sloping part 2 so that the corner 3 of the sizing part 2 can be cut off along the cutting surface A. To install the cutter 10, use an appropriate jig or guide so that the cutter 10 is placed at the corner 3 of the sloping part 2 of the cardboard box l.
It is preferable that the knife 10 be maintained at a predetermined angle with respect to the cutter 10, and by sliding a jig or guide that supports the cutter 10 at a predetermined angle along the corner 3 of the corrugated part 2 of the cardboard box 1. The angle of the cutter 10 relative to the corner 3 of the cardboard box 1 is preferably about 45°, but it is limited to this angle so that the corner 3 can be cut suitably as shown in FIG. 1A. It can be installed in the range of about 30' to 60 degrees. Furthermore, it will be understood that the cutting can be performed when the cutting edge 11 of the cutting tool 10 reaches halfway to the vicinity of the inner folding arm 7 without penetrating the corner as shown in the figure.

Next, when cutting the outer fin of the cardboard box 1, that is, the corner 5 of the folding board 4, as shown in FIGS. 2 and 2A, The cutting is done in the same manner as No. 3.

That is, on the folding plate 4 which is the outer fin of the cardboard box 1, the cutter 10 is positioned along the cutting plane B at a predetermined angle, for example, about 45°, with respect to the corner 5 of the folding plate 4 of the cardboard box 1. The cutting edge 11 of the cutting tool 10 is pierced through the corner 5 of the folding plate 4 so that the cutting edge 11 of the cutting tool 10 can cut off the corner 5 of the folding plate 4 along the cutting surface B. A knife 10 maintained at an angle of
is slid along the corner 5 of the folding board 4 of the cardboard box 1, thereby cutting the corner 5 as shown in FIG. 2A.

In the same way, if the 5° corner of the folding plate 4' on the opposite side of the cardboard box 1 is also cut, and the three sides of the top surface of the cardboard box 1 are cut, the cardboard box 1 will be cut as shown in FIG. By opening the top surface using a vacuum, for example, and cutting the remaining side along the fold line 8 with a knife 10 in the usual manner, the cardboard box 1 can be opened without damaging the contents.

[Effects of the Invention] As described above, according to the method for cutting a cardboard box of the present invention, a single knife-shaped blade installed at a predetermined angle with respect to the edge of the cardboard box or the corner of the folded board is used to cut the cardboard box. It is possible to cut the folded part of the box and the three corners of the folding board such as the outer fin or inner fin, and to open one side of the cardboard box by cutting the corner of the remaining side as usual. Therefore, cutting can be performed with reliable and smooth operation without damaging the contents inside the cardboard box, and the corners of the cardboard box can be continuously shortened manually or automatically as necessary. It is possible to produce effects such as being able to cut reliably on time.

[Brief explanation of drawings]

1 and 1A, FIG. 2, FIG. 2A, and FIG. 3 are a schematic view and a partial sectional view of a cardboard box in the method of cutting a cardboard box of the present invention. In the figure, 1: Cardboard box, 2: Norishiro part, 3.5.5
; corner, 4.4゛ double folding plate, 7. Fold-in groove, 8
: Crease, 10: Knife, 11: Cutting edge.

Claims (1)

[Claims] Place a knife at the required angle around the folded part of the folded part of the cardboard box or the corner ridgeline of the folding plate, insert the knife so that it penetrates at least the corner of the folded part of the cardboard box, and bend the cardboard box. 1. A method for cutting a cardboard box, comprising cutting a corner of a folded portion of the cardboard box by relatively moving a knife along a ridgeline of the corner of the cardboard box.