JP3391051B2 - Cutting machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting machine for cutting a material such as a sheet-shaped iron material or paper (hereinafter referred to as a sheet material) with a rotary blade, and in particular, this sheet material is provided with a mark indicating a cutting length. Regarding things.

[0002]

2. Description of the Related Art FIG. 4 is a system diagram showing a conventional example of this type of cutting machine. In FIG. 4, the cutting machine feeds a sheet material 4 with a mark indicating a cutting length, a roll driving motor 5 for rotating the roll 2, and a roll 2 connected to the roll 2 in proportion to the rotation amount of the roll 2. A roll encoder 6 that outputs a detection signal of the number of pulses, a mark sensor 1 that detects a mark on a sheet material 4, a rotary blade 3 that cuts the sheet material 4 sent by a roll 2, and a rotary blade 3 that rotates the rotary blade 3. A rotary blade drive motor 13, a rotary blade encoder 14 that is connected to the rotary blade 3, outputs a detection signal of a pulse number proportional to the rotation amount of the rotary blade 3, and a mark sensor 1.
Input signal, the detection signal of the roll encoder 6, and the reference pulse train of the oscillator 21, and the roll control circuit 23 that controls the rotation amount of the roll drive motor 5, and the detection signal of the rotary blade encoder 14 and the oscillator 21. The reference pulse train of 1 is input, and the control circuit 24 for the rotary blade controls the amount of rotation of the drive motor 13 for the rotary blade, and the setter 22 of the oscillator 21. The roll control circuit 23 receives the detection signal of the roll encoder 6, the counter 11 to which the reference pulse train of the oscillator 21 is input, the output signals of the counters 10 and 11 and the detection signal of the mark sensor 1. Is input and outputs a drive signal to the roll drive motor 5 via the D / A converter 8 and the driver 7, and a setter 12 for the calculator 9.
It consists of Further, the rotary blade control circuit 24 is a counter 1 to which the detection signal of the rotary blade encoder 14 is input.
8 and a counter 19 to which the reference pulse train of the oscillator 21 is input, and output signals of the counters 18 and 19 are input to output a drive signal to the rotary blade drive motor 13 via the D / A converter 16 and the driver 15. The calculator 17 and the setting device 20 of the calculator 17 are included.

The operation of this cutting machine is as follows. Figure 4
In, feeding of the sheet 4 which is input by the setter 22
The oscillator 21 outputs a reference pulse train having a predetermined pulse frequency in accordance with the amount of charge. This reference pulse train is counted by the counters 11 and 19 of the roll control circuit 23 and the rotary blade control circuit 24, respectively, and the calculators 9 and 17 are the cutting length and the counter 11 or previously input by the setter 12 or 20, respectively. Based on the output signal of 19, the roll drive motor 5 and the rotary blade drive motor 13 are rotated by a predetermined rotation amount . Sheet 4 is fed by the feed amount corresponding to the amount of rotation of the roll driving motor 5, the rotary blade 3 to cut the sheet 4 fed by the cutting edges per revolution. Here, the computing unit 9 measures the mark interval of the sheet material 4 from the number of pulses of the detection signal of the roll encoder 6 to one mark of the sheet material 4 detected by the mark sensor 1 and the next mark. When the marks are displaced and the mark interval is different from the preset cutting length, the roll control circuit 23 controls the rotation amount of the roll drive motor 5 to change the feed amount of the sheet material 4, Correct the cutting position.

[0004]

In the above-mentioned cutting machine, when the marks on the sheet material are misaligned and the mark interval is different from the preset cutting length, the amount of rotation of the roll drive motor is correspondingly increased. Is controlled to change the feed amount of the sheet material 4 to correct the cutting position. However, since the position of the mark sensor that detects the mark and the position of the rotary blade that cuts the sheet material are different, However, there is a problem in that the cutting position of the sheet material causes an error due to the movement of the sheet material.

An object of the present invention is to correct an error in the cutting position of the sheet material caused by the difference between the position of the mark sensor for detecting the mark on the sheet material and the position of the rotary blade for cutting the sheet material.

[0006]

In order to achieve the above-mentioned object, the present invention provides a roll for feeding a sheet material having a mark indicating a cutting length, a roll drive motor for rotating the roll, and the roll. Between the roll encoder that detects the amount of rotation of the sheet material, a mark sensor that detects the mark of the sheet material, a rotary blade that cuts the fed sheet material, and between the mark of the sheet material from the amount of rotation of the roll.
It has an arithmetic unit for measuring the distance, and a measuring unit for the arithmetic unit.
If the break interval is different from the preset cutting length,
For cutting machines that control the rotation amount of the tool to correct the cutting position.
Then , the sheet material is cut at a position where the mark of the sheet material detected by the mark sensor from the distance between the previously registered mark sensor and the rotary blade is fed out by a length corresponding to this distance. And a roll control circuit for controlling the rotation amount of the roll drive motor. Alternatively, a roll that sends out a sheet material with a mark indicating the cutting length, a roll drive motor that rotates this roll, a roll encoder that detects the rotation amount of this roll, and a mark that detects the mark of the sheet material. A sensor and a rotary blade that cuts the fed sheet material,
Distance between marks on the sheet material from the amount of rotation of the roll
Has a computing unit for measuring the
If the gap is different from the preset cutting length, roll
For cutting machines that control the amount of rotation of the machine to correct the cutting position.
Then, the number of cut sheet materials within this distance is calculated from the pre-registered cutting length and the distance between the mark sensor and the rotary blade, and the mark of the sheet material detected by the mark sensor is determined by this number. And a roll control circuit for controlling the amount of rotation of the roll drive motor so that the sheet material is cut when it is fed by a length corresponding to.

[0007]

In the cutting machine according to the present invention, the sheet material mark detected by the mark sensor from the distance between the mark sensor and the rotary blade registered in advance is fed out by the length corresponding to this distance. A roll control circuit that controls the rotation amount of the roll drive motor so that the material is cut, or a cutting within a distance between the pre-registered cutting length and the mark sensor and the rotary blade. The rotation amount of the roll drive motor is calculated so that the number of sheet materials is calculated and the sheet material is detected when the mark of the sheet material detected by the mark sensor is sent out by the length corresponding to this number. Since a roll control circuit for controlling the roll is provided, it is said that the mark detected by the mark sensor is sent out by a length corresponding to the distance between the mark sensor and the cutting machine. Since the rotary blade at a filtration cuts the sheet material, the sheet material even if shifted to mark the position of the sheet material is properly cut according to the position of the mark. The latter device calculates the number of cutting sheet materials within this distance from the pre-registered cutting length and the distance between the mark sensor and the rotary blade. The arithmetic processing is simplified.

[0008]

1 is a system diagram showing an embodiment of a cutting machine of the present invention. The system diagram of FIG. 1 is the same as the system diagram of FIG. 4, but the roll control circuit 23 has a higher function.
That is, the distance between the mark sensor 1 and the rotary blade 3 indicated by L in FIG. 2 is input in advance by the setting device 12 to the calculator 9 of the roll control circuit 23.
By controlling the rotation amount of the roll driving motor 5 so that the rotary blade 3 cuts the sheet material 4 when the mark detected in step S has been fed out by a length corresponding to this distance L.
Correct the feed amount of. That is, even if there is a distance L between the mark sensor 1 and the rotary blade 3, the sheet material 4 is cut when the detected mark is fed out by a length corresponding to this distance L. Even if there is misalignment, it will be cut correctly according to the position of the mark.

FIG. 3 is a model diagram showing a different method of this cutting position correction control. The above-mentioned correction control of the cutting position is a roll drive so that the mark is cut when the mark is fed by the distance L between the mark sensor 1 and the rotary blade 3, that is, when the sheet material 4 is fed by the length L. Although the amount of rotation of the motor is corrected, if this calculation is performed during operation of the device, there are many calculation items and the processing of the calculator 9 becomes complicated. Therefore, the arithmetic processing of the arithmetic unit 9 is simplified by calculating the distance L / cutting length in advance by the arithmetic unit 9 of the roll control circuit 23 before the operation. As shown in FIG. 3, for example, when the distance L / cutting length = 3, there are three cutting sheet materials between the mark sensor 1 and the rotary blade, and the fourth cutting sheet material is sent out. In accordance with the above, the feed amount of the sheet material and the rotation amount of the roll drive motor are controlled so that this mark comes to the cutting position. As described above, since the distance L / cutting length is calculated in advance, the arithmetic processing of the arithmetic unit 9 is simplified.

In the above description, the distance L / cutting length =
Although it is an integer of 3, it is of course possible to control in the same manner even with a fraction such as 2.5.

[0011]

Since the cutting machine of the present invention cuts correctly according to the position of the mark indicating the cutting length, the sheet material can be cut with high accuracy.

[Brief description of drawings]

FIG. 1 is a system diagram showing an embodiment of a cutting machine of the present invention.

FIG. 2 is a model diagram for explaining an example of the control method of the cutting machine of the present invention shown in FIG.

FIG. 3 is a model diagram for explaining a different example of the control method of the cutting machine of the present invention shown in FIG.

FIG. 4 is a system diagram showing an example of a conventional cutting machine.

[Explanation of symbols]

1 mark sensor Two rolls 3 rotary blades 4 sheet materials Drive motor for 5 rolls 6 roll encoder 23 Roll control circuit

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Claims (2)

(57) [Claims] 1. A roll for sending out a sheet material having a mark indicating a cut length, a roll drive motor for rotating the roll, a roll encoder for detecting the amount of rotation of the roll, and a mark for the sheet material. Between the mark sensor for detecting the mark, the rotary blade for cutting the fed sheet material, and the mark of the sheet material from the rotation amount of the roll.
It has an arithmetic unit for measuring the distance, and a measuring unit for the arithmetic unit.
If the break interval is different from the preset cutting length,
For cutting machines that control the rotation amount of the tool to correct the cutting position.
In addition , the sheet material is cut when the mark of the sheet material detected by the mark sensor from the distance between the mark sensor and the rotary blade registered in advance is fed out by a length corresponding to this distance. A cutting machine comprising a roll control circuit for controlling the amount of rotation of the roll drive motor. 2. A roll for feeding a sheet material having a mark indicating a cut length, a roll drive motor for rotating the roll, a roll encoder for detecting a rotation amount of the roll, and a mark for the sheet material. Between the mark sensor for detecting the mark, the rotary blade for cutting the fed sheet material, and the mark of the sheet material from the rotation amount of the roll.
It has an arithmetic unit for measuring the distance, and a measuring unit for the arithmetic unit.
If the break interval is different from the preset cutting length,
For cutting machines that control the rotation amount of the tool to correct the cutting position.
Then, the number of cut sheet materials within this distance is calculated from the pre-registered cutting length and the distance between the mark sensor and the rotary blade, and the mark of the sheet material detected by the mark sensor is this number. And a roll control circuit for controlling the amount of rotation of the roll drive motor so that the sheet material is cut when the sheet is fed by a length corresponding to the cutting machine.