JPH0688361B2 - Sheet cutting device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sheet cutting device that cuts a sheet into a desired shape.

[Prior Art] Cardboard for making samples of paper boxes, cardboard boxes, etc.
BACKGROUND ART A sheet of corrugated paper or the like is set in a sheet cutting device, cut out into a developed shape, and assembled. Usually, this sheet cutting device is equipped with a flat table and a cutting head that moves in the XY direction on this table and cuts the sheet, and the sheet placed on the table is based on the separately prepared cutting data. It is designed to be cut. The size of a sheet that can be cut by such an apparatus is usually restricted to the size of a table, and in order to cut a large size paper, it is necessary to use a table having a size corresponding to the size.

[Problems to be solved by the invention] However, in order to cut a large size paper, simply increase the size of the table of the cutting device,
Not only does it require a large installation space for mounting the device itself, but also the bending of the ball screw for driving the cutting device occurs, which reduces accuracy, and this is a problem. If it is attempted to obtain the same accuracy as a small device, the device becomes complicated and expensive.

[Means for Solving Problems] The present invention has been made to solve the above problems, and has a table on which a sheet to be cut is placed and a cutter blade, and the table has XY directions. A cutting head that moves to the cutting position and drives the head based on the cutting data to cut the sheet, and a storage unit that stores the cutting data; and an arbitrary cutting data stored therein. And the window setting means for setting the window, coordinate conversion is performed so that the cutting data in the set window falls within the cutting possible area of the cutting device, and a line connecting the intersection of the cutting data and the window frame is newly added. Means to generate as cutting data and the new A sheet cutting apparatus characterized by comprising a means for cutting the sheet based on the cutting data in the window, including the data that allowed occurred.

[Operation] With the configuration as described above, the cutting data is divided into two or more at an appropriate position, the sheet is cut into each part, and the sheets can be stuck together. Divided cutting of graphic data becomes possible.

[Examples] Hereinafter, the present invention will be described in detail with reference to Examples shown in the drawings.

1 and 2 are a plan view and a side view of a cutting device according to the present invention.

Reference numeral 1 denotes a table on which a sheet to be cut is placed, and a rubber sheet 2 is arranged on the surface thereof so as not to be damaged even if a cutter blade described later comes into contact therewith. The rubber sheet 2 is formed with grid-like reference lines 14 for alignment at regular intervals (for example, 10 cm), and small holes (not shown) for allowing the placed sheet to be adsorbed and fixed. Is provided.

Y-axis rails 11 and 11 are provided on one opposite side edge of the table 1.
Is installed, and one X-axis rail 12 is installed on the Y-axis rails 11, 11. The cutting head 3 is attached to the X-axis rail 12. The X-axis rail can be moved on the Y-axis rail by the Y-axis motor.
Can be moved along the X-axis by driving the X-axis motor, and consequently the head 3 can move on the table in the XY directions. Reference numeral 13 is an operation key for instructing the start and end of the operation and inputting a numerical value.

The cutting head 3 has a cutter blade 4, a drawing pen 5,
And, a squeezing blade 6 for shaping the folding line is attached, and each of them is selectively operable.

Next, a data processing circuit of the cutting device according to the present invention will be described with reference to FIG. FIG. 3 is a block diagram of the processing circuit, in which the CPU 22 performs arithmetic processing of data based on the program stored in the ROM 23 to control the operation. RAM24 stores data for arithmetic processing, and these CPU22, ROM23, RAM24
Is connected to the bus line 21 together with the operation keys 13 described above. The above-mentioned X-axis motor and Y-axis motor 26 are connected to the bus line 21 via the motor driver 27, and are attached coaxially with the X-axis motor 25 and the Y-axis motor 26 to position the cutting head. X-axis encoder 28, Y
The pulse signal from the shaft encoder 29 is input to the counters 30 and 31, and the signal from this counter is input to the bus line 21 as coordinate information.

Next, the sheet cutting operation based on the program stored in the ROM shown as a flow chart in FIG. 8 using the apparatus having the above-mentioned configuration will be described.

FIG. 4 is an explanatory diagram of figures to be cut out from the sheet.
This figure I is a developed view of the cardboard box, the length in the Y-axis direction is about 300 cm, the solid line 50 is a cutting line, and the alternate long and short dash line 51 is a muscle pushing line. Rather than cutting such a figure with a large machine having a table of about 300 cm on a side, it is cut with a machine having a table with a size of half or less. In this example, 2
Divide and cut into A and B figures. The dividing line is preferably a fold line of the box.

The cutting data created by a separate CAD system or the like corresponding to the figure to be cut out is read into a predetermined area of the RAM 24 from online or from a floppy disk or the like. For this data, consider a coordinate system corresponding to the cutting device as shown in FIG. First, in order to target only the figure A, four points P ₁ (X ₁ , Y ₁ ), P ₂ (X ₁ , Y ₂ ), P ₃ (X ₂ ,
Y ₂ ), P ₄ (X ₂ , Y ₁ ) to set the window frame,
Window processing is performed to identify the cutting target area. Here, one side P ₂ P ₃ of the frame divides the figure I. As a concrete method of inputting, a known method such as displaying cutting data on a display and determining a window range with a cursor for the displayed figure, or a method of directly inputting coordinate values from operation keys Can be adopted. Also, regarding window processing
Since the CRT display and the plotter degree are known, further description will be omitted.

Next, the intersection of the cutting data of the figure I and the window frame is detected, and a new cutting line connecting the intersections is generated. As a result, the figure A as shown in FIG.
Independent cutting data for After that, set the size of the paper corresponding to the windows P ₁ , P ₂ , P ₃ , P ₄ on the table, output the cutting data in the window including the newly generated cutting line, and set the cutting head. The figure A is cut out by driving.

Next, it is determined whether or not there is cutting data remaining outside the window. This judgment may be an instruction from an operator, or a program may check the presence or absence of remaining data.

If there is remaining data, set a new window to include that data. In this embodiment, as shown in FIG. 6, it is set so as to include the B graphic. That is, P ₅ (X ₃ , Y ₃ ) and P ₆ (X ₃ ,
Input Y ₄ ), P ₇ (X ₄ , Y ₄ ), and P ₈ (X ₄ , Y ₃ ), and perform window processing. And for the figure in this window,
The origin is moved so that the coordinates enter the cutting possible area of the cutting device, and the coordinates are converted. After that, a new cutting line that connects the intersection of the cutting data and the window frame is generated. As a result, independent cutting data of the figure B as shown in FIG. 7 is created. By outputting this data and driving the cutting head, the figure B can be cut. According to this embodiment, a part of the figure A is connected to the figure B, but a part of the figure A is used as a margin for bonding the figure B to the figure A and integrating them. In the subsequent step, a part of the figure A is cut into an appropriate shape to make a glue margin.

After the cutting of the figure B is completed, it is confirmed whether or not the uncut data remains, and if not, the operation is ended.

The above is a description based on an embodiment of the present invention, and the present invention is not limited to this embodiment.

For example, in this embodiment, the figure of I to be cut out was cut into two, and the cutting was performed. You may give a process.

Further, the portion used as a margin for pasting may be attached to any of the divided figures. In this embodiment, the window may be set such that the A figure includes a part of the B figure and the B figure does not include the A figure.

[Effects of the Invention] According to the present invention as described above, even in the case of cutting a graphic of a large size, this is divided at appropriate positions, cut, and then bonded in a subsequent process to reduce the size of the device. A cutting device can be used for this purpose. Therefore, it does not take up an installation space and is inexpensive and enables highly accurate cutting.

[Brief description of drawings]

FIG. 1 is a plan view of a sheet cutting saw, FIG. 2 is a side view thereof, FIG. 3 is a block diagram thereof, FIGS. 4 to 7 are explanatory views of figures to be cut, and FIG. 8 is a flowchart of processing. Is.

Claims (1)

[Claims] 1. A table on which a sheet to be cut is placed, a cutting head having a cutter blade and moving in the XY directions on the table, and the head is driven based on cutting data to cut the sheet. In the sheet cutting apparatus for storing, cutting means for storing cutting data, window setting means for setting an arbitrary window with respect to the stored cutting data, and cutting data in the set window are stored in the cutting apparatus. A means for generating a line connecting the intersections of the cutting data and the window frame as new cutting data while performing coordinate conversion so as to enter the cutting possible area, and cutting data in the window including the newly generated data. Based on sea Sheet cutting apparatus characterized by comprising a means for cutting the.