JPH085033B2 - Continuous tag cutting device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a continuous tag cutting device including a continuous tag and the like, and more particularly to a device for cutting a continuous tag with a rotary cutter including a fixed blade and a rotary blade.

(Prior Art) Conventionally, Japanese Patent Application Laid-Open No. 56-166084 is known as an example of this type of continuous bill cutting device.

In this conventional technique, the driving force of a DC motor is transmitted to a rotary blade via a gear mechanism to rotate the blade, and the web existing between the rotary blade and the fixed force is cut, and the rotary blade is moved to the initial position. The positioning is performed by detecting notches of a plurality of control boards provided on the rotary shaft to which the rotary blades are attached with a plurality of detectors.

(Problems to be Solved by the Invention) However, according to the above-mentioned conventional example, since the driving force of the DC motor is transmitted to the rotary blade via the gear mechanism, there is a problem that noise in the gear mechanism is large. It was

Also, since the timing of positioning the rotary blade at the initial position is determined by the output signals from the multiple detectors that detect the notches in the multiple control panels, it is possible to accurately adjust the mounting position of each control panel and each detector. However, the assembly process and the adjustment process are complicated. Further, according to the above-mentioned conventional example, the stopping of the rotary blade at the initial position is performed by stopping the driving force of the DC motor rotating in one direction and then performing the inertial rotation of the rotary blade. Due to attributes such as sheath and rigidity, the inertia of the rotary blade changes after cutting the continuous bill, and it is difficult to stop the rotary blade at the initial position accurately for continuous bills with various attributes. Since it is necessary to separately provide a member for positioning for stopping at a position, the number of parts increases, the production cost increases, and noise is generated due to a collision between the engaging portion of the rotation control member and the positioning member.

The present invention has been made in view of the above circumstances, and transmits the driving force of a DC motor to a rotary blade via a belt means, and has a predetermined inertia with a single detector to perform forward rotation and reverse rotation. Repetitive detection of the detected part of the rotary member reduces noise, has a simple structure, simple assembly and adjustment processes, and automatically and reliably stops the rotary blade at the initial position. An object of the present invention is to provide a continuous tag cutting device capable of performing the above.

(Means for Solving the Problem) In order to solve the above-mentioned problems, the present invention provides a rotary cutter for cutting a continuous bill by a fixed blade and a rotary blade, and a direct current for rotationally driving the rotary blade via belt means. A motor, a rotary member that has a predetermined inertia and rotates in conjunction with the rotary blade and that has a detected portion at a predetermined position, and detects the detected portion of the rotary member when the rotary blade is in the initial position. And a single detector that outputs a detection signal,
Switching means for alternately outputting a normal rotation signal and a reverse rotation signal according to a detection signal from this detector, and output of the forward rotation signal and the reverse rotation signal from the switching means while the detection signal is being output from the detector. Prohibiting means for prohibiting, and motor driving means for stopping the rotating blade from rotating to the initial position after rotating the blade once for normal rotation and reverse rotation based on the forward rotation signal and the reverse rotation signal output from the switching means. And the inertia of the rotary blade and the rotary member is reduced by repeating forward and reverse rotations of the DC motor, and the rotary blade is stopped at the initial position.

(Operation) According to the present invention, the rotating blade is rotationally driven by the DC motor via the belt means, and the switching means rotates the DC motor forward every time the single detector detects the detected portion of the rotating member. The signal and the reverse signal are output alternately. As a result, the DC motor repeats forward rotation and reverse rotation, and the inertia of the rotating member gradually decreases due to this repetition, and the forward rotation and reverse rotation of the rotary blade stop when the detector detects the detected portion of the rotating member. Then, the rotary blade stops at the initial position.

Embodiments Embodiments of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, reference numeral 1 is a continuous label composed of continuous tags, etc. The continuous label 1 has desired information printed by a tag printer (not shown) and a pulse motor PM.
It is configured to be appropriately transferred by a pair of transfer rollers 2 and 3 which are rotationally driven by. The continuous label 1 transferred by the transfer rollers 2 and 3 is guided between the fixed blade 6 and the rotary blade 7 by the guide members 4 and 5. The rotary blade 7 is connected to the DC motor M by a belt 8 so that the rotary blade 7 can be appropriately rotated by the DC motor M. Then, the rotary shaft 7a of the rotary blade 7 has a detected portion 9a.
The rotary member 9 having a through hole is fixed. A transmission type photoelectric detector 10 is disposed near the outer periphery of the rotary member 9, and the detector 10 detects the above-mentioned detected object when the rotary blade 7 is in the initial position as shown by the chain line in FIG. It is arranged at such a position as to detect the portion 9a.

The single leaf tag 1a cut by the rotary cutter composed of the fixed blade 6 and the rotary blade 7 has a pair of delivery rollers.
By being sent out by 11, 12, they are sequentially stacked in the stacker 13. The delivery roller 11 is connected to the DC motor M by a belt 14 and is configured to be rotationally driven simultaneously with the rotary blade 7.

Next, a drive control circuit of the DC motor M that rotationally drives the rotary blade 7 will be described with reference to FIG.

The DC motor M is rotationally driven by a DC power supply V, and the positive terminals of this power supply are connected to the emitters of the transistors Tr1 and Tr3 and the collectors of the light receiving transistors PTr2 and PTr3, respectively. The collector of the transistor Tr1 is connected to the base of the transistor Tr3 via the resistor R6, and the collector of the transistor Tr3 is connected to the transistor T via the resistor R4.
Connected to the base of r1. The emitter of the light receiving transistor PTr2 is connected to the base of the transistor 2 via the resistor R3, and the emitter of the light receiving transistor PTr3 is connected to the base of the transistor Tr4 via the resistor R5. The collectors of the transistors Tr2 and Tr4 are connected to the collectors of the transistors Tr3 and Tr1, respectively, and the emitters of the transistors Tr2 and Tr4 are both connected to the negative terminal of the power supply V. The DC motor M is connected to the collector of the transistor Tr1 and the collector of the transistor Tr3.

Therefore, when the base of the light receiving transistor PTr2 is irradiated with light, the light receiving transistor PTr2 is turned on and the transistor Tr2 is also turned on. When the transistor Tr2 is turned on, a base current flows through the transistor Tr1 and the transistor Tr1 is also turned on. As a result, the transistor Tr
1, a current flows in the direction of arrow A through the DC motor M and the transistor Tr2, and the DC motor M rotates normally. When the base of the light receiving transistor PTr3 is irradiated with light, the light receiving transistor PTr3 is turned on and the transistor Tr4 is turned on. When the transistor Tr4 is turned on, a base current flows through the transistor Tr3, and the transistor Tr3 is also turned on. As a result, a current flows in the direction of arrow B through the transistor Tr3, the DC motor M, and the transistor Tr4, and the DC motor M rotates in the reverse direction. The light receiving transistor PTr2 for rotating the DC motor M in the forward direction constitutes a photoelectric relay PC2 by being combined with the light emitting diode PD2, and the light receiving transistor PTr3 for rotating the DC motor M in the reverse direction is
It is combined with the light emitting diode PD3 to form a photoelectric relay PC3.

Next, a circuit for driving the light emitting diodes PD2 and PD3 will be described.

The DC motor M is a disconnection command signal input from an external device (not shown) such as a tag printer or an electronic calculator.
CS, power-on signal PO of disconnecting device, or key signal KS output by operating an initial position setting key (not shown)
And so on. The terminal for inputting the disconnection command signal CS is the input terminal of the inverter Iv1 and the first input terminal of the NAND gate circuit G1, and the terminal for inputting the power-on signal PO is the second input terminal of the NAND gate circuit G1 and the first input terminal of the NAND gate circuit G2. The two input terminals and the terminal for inputting the key signal KS are respectively connected to the third input terminal of the NAND gate circuit G1 and the first input terminal of the NAND gate circuit G2.

The output terminal of the inverter Iv1 is a flip-flop circuit FF1.
The flip-flop circuit FF1 is set by the input of the disconnection command signal CS. The output terminal of the NAND gate circuit G1 is connected to the input terminal of the monostable circuit MM, the reset terminal of the flip-flop circuit FF2, and the first input terminal of the OR gate circuit G8, respectively. The output terminal of the OR gate circuit G8 is connected to the reset terminal of the flip-flop circuit FF3. The output terminal of the NAND gate circuit G2 is connected to the first input terminal of the OR gate circuit G3, and the output terminal of the OR gate circuit G3 is connected to the reset terminal of the flip-flop circuit FF1. In addition, the flip-flop circuit FF
The D input terminal of 3 is connected to the power supply, and the non-inverting output terminal is connected to the second input terminal of the OR gate circuit G3.
The D input terminal of the flip-flop circuit FF1 is grounded, and the inverting output terminal of the monostable circuit MM is input to the clock input terminal.

Therefore, when any of the disconnection command signal CS, the power-on signal PO and the key signal KS is input, the monostable circuit MM is triggered and the flip-flop circuits FF2 and FF3 are reset. Further, the flip-flop circuit FF1 has a disconnection command signal C
It is set when S is input, when the power-on signal PO is input, when the key signal KS is input, when the flip-flop circuit FF3 changes to the set state, or the inverted output of the monostable circuit MM is “ It is reset when it changes to H "level. The non-inverting output terminal of the monostable circuit MM that regulates the cutting operation time is connected to the second input terminals of the NAND gate circuits G5 and G6. The inverting output terminal of the flip-flop circuit FF1, which is set by the output signal of the inverter Iv1 and reset by the output signal of the OR gate circuit G3, has the first input terminal of the NAND gate circuit G4 and the AND gate circuit G7 and the second input of the OR gate circuit G8. It is connected to the terminal. The output terminal of the NAND gate circuit G4 is connected to the non-inverting output terminal of the clock-up circuit FF2 of the flip-flop circuit FF2, and the inverting output terminal of the flip-flop circuit FF2 itself is connected to the first input terminal of the flip-flop circuit FF2. It is connected to the first input terminal of the NAND gate circuit G5. In this way, since the inverting output terminal of the flip-flop circuit FF2 is connected to the D input terminal, the output signal is inverted when the output signal of the NAND gate circuit G4 rises.

The detector 10 described above is a light emitting diode PD that constantly emits light.
1 and a light receiving transistor PTr1 which is turned on when receiving light from the light emitting diode PD1. The emitter of this light receiving transistor PTr1 is installed, the collector is connected to the power supply through the resistor R1, and the inverter Iv2
It is connected to the input terminal of. The output terminal of the inverter Iv2 is connected to the input terminal of the inverter Iv3, the second input terminal of the NAND gate circuit G4, and the clock input terminal of the flip-flop circuit FF3, respectively. The output terminal of the inverter Iv3 is connected to the third input terminals of the NAND gate circuits G5 and G6, and the output terminal of the NAND gate circuit G5 is connected to the second input terminal of the AND gate circuit G7.

The output terminal of the AND gate circuit G7 is connected to the cathode of the light emitting diode PD2, and the anode of the light emitting diode PD2 is connected to the power supply via the resistor R2. The light emitting diode PD2 constitutes a photocoupler PC2 together with the above-mentioned light receiving transistor PTr2, and when the output of the AND gate circuit G7 becomes "L" level, it emits light to turn on the light receiving transistor PTr2. . The output terminal of the NAND gate circuit G6 is connected to the cathode of the light emitting diode PD3, and the anode of the light emitting diode PD3 is connected to the resistor R3.
Connected to the power supply via. This light emitting diode PD
The photocoupler PC3, together with the above-mentioned light receiving transistor PTr3, constitutes a photocoupler PC3, which emits light to turn on the light receiving transistor PTr3 when the output of the NAND gate circuit G6 becomes "L" level.

Next, the disconnection control operation will be described in detail with reference to the timing chart of FIG.

First, when the power is turned on, a power-on signal PO is output by, for example, a differentiating circuit (not shown). This power-on signal PO is supplied to the monostable circuit through the NAND gate circuit G1.
It triggers the MM, resets the flip-flop circuits FF2 and FF3, and resets the flip-flop circuit FF1 through the NAND gate circuit G2 and the OR gate circuit G3. In this state, the rotary blade 7 as shown by the chain line in FIG.
Is in the initial position, the detector 10 detects the non-detection portion 9a of the rotating member 9, so that the light receiving transistor PTr1 is turned on. Therefore, the outputs of the NAND gate circuits G5 and G6 are both at the “H” level, and the output from the inverting output terminal of the flip-flop circuit FF1 is also at the “H” level, so that both the light emitting diodes PD2 and PD3 do not emit light and the DC motor M does not rotate.

On the other hand, when the rotary blade 7 is not in the initial position as shown by the solid line in FIG. 1 when the power is turned on, the detector 10 does not detect the detected portion 9a of the rotary member 9 and thus the light receiving transistor PTr1. Is off. In this state, the output of the inverter Iv3 and the output from the inverting output terminal of the flip-flop circuit FF2 become "H" level, and the output from the non-inverting output terminal of the monostable circuit becomes "H" level for the time t. Output of NAND gate circuit G5 is "L"
Level. As a result, the output of the AND gate circuit G7 becomes "L" level, and the light emitting diode PD2 emits light.

The light-emitting transistor PD2 emits light, and thus the light-receiving transistor P
Tr2 is turned on, and as a result, the DC motor M is normally rotated as described above.

With the forward rotation of the DC motor M, the rotary blade 7 and the rotary member 9 rotate in the direction indicated by the arrow in FIG. Then, when the detector 10 detects the detected portion 9a of the rotating member 9, the light receiving transistor PTr1 is turned on, and as a result, the output of the NAND gate circuit G5 becomes "H" level and the light emission of the light emitting diode PD2 is stopped. Although power supply to the DC motor M is stopped by stopping the light emission of the light emitting diode PD2, the rotary blade 7 and the rotary member 9 are rotated by inertia, and the detected portion 9a passes the position of the detector 10. As a result, the light receiving transistor PTr1 is turned off again when the detected portion 9a passes the detector 10. When the light receiving transistor PTr1 is turned off, the output of the NAND gate G4 becomes "H" level, the flip-flop circuit FF2 is inverted, and the output of the inverter Iv3 becomes "H" level. As a result, the output of the NAND gate circuit G6 becomes "L" level, and the light emitting diode PD3 emits light. The light emitting transistor PDr3 is turned on by the light emission of the light emitting diode PD3, and the DC motor M is reversed.

In this way, the detector 10 detects the detected portion 9a of the rotating member 9.
Every time the signal is detected, the flip-flop circuit FF2 is inverted at the end of the detection signal, and the DC motor M repeats normal rotation and inversion. By repeating this, the inertia of the rotary blade 7 and the rotary member 9 is gradually reduced, and in the state where the detector 10 detects the detected portion 9a of the rotary member 9, the normal and reverse rotations of the rotary blade 7 are stopped and the rotary blade 7 is stopped. Stops at the initial position. When the rotary blade 7 does not stop at the initial position within the time t from the generation of the power-on signal PO due to various physical loads, the signal from the non-inverting output terminal of the monostable circuit MM ends. Since the gates of the NAND gate circuits G5 and G6 are closed, neither of the light emitting diodes PD2 and PD3 emits light and the DC motor M is stopped.

When the rotary blade 7 is not at the initial position, the initial position setting key is operated to position the rotary blade 7 at the initial position. The key signal KS output by this operation is input to the NAND gate circuits G1 and G2 similarly to the power-on signal PO, and the direct-current motor M repeats forward and reverse rotations in the same manner as when the power-on signal PO is output. Thus, the rotary blade 7 stops at the initial position.

Next, a cutting operation for cutting the continuous hole 1 on which desired information is printed by a tag printer or the like will be described.

First, the rotary blade 7 is stopped at the initial position as shown by the chain line in FIG. 1, and in this state, the detector 10 detects the detected portion 9a of the rotary member 9. The continuous hole 1 on which desired information is printed is appropriately transferred by the transfer rollers 2 and 3 which are rotationally driven by the pulse motor PM, and stops when the position to be cut reaches the cutting position C.

When the transfer of the continuous label 1 is completed, the tag printing machine outputs the disconnection command signal CS, which is input to the NAND gate circuit G1 and the inverter Iv1. This disconnection command signal CS sets the monostable circuit MM through the NAND gate circuit G1, and
The flip-flop circuits FF2 and FF3 are reset, and the flip-flop circuit FF1 is set through the inverter Iv1. In the initial state, since the detector 10 detects the detected portion 9a of the rotating member 9, the output signals of the NAND gate circuits G5 and G6 are at "H" level, and the flip-flop circuit
The signal from the inverting output terminal of FF1 is input to the AND gate circuit G7. Therefore, the output of the AND gate circuit G7 becomes "L" level and the output of the NAND gate circuit G6 becomes "H" level, so that the light emitting diode PD2 emits light.
The DC motor M rotates normally. The rotary blade 7, which rotates together with the normal rotation of the DC motor M, cooperates with the fixed blade 6 to cut the portion of the continuous bill 1 to be cut, and then returns to the initial position. Also,
Since the delivery rollers 11 and 12 are rotationally driven as the DC motor M rotates, the cut single-leaf sheets 1a are sequentially stacked in the stacker 13 by these delivery rollers 11 and 12.

When the rotary blade 7 returns to the initial position and the detector 10 detects the detected portion 9a of the rotary member 9, the light receiving transistor PTr1 is turned on. As a result, the flip-flop circuit FF3 is set, and the flip-flop circuit FF1 is reset by the signal from the non-inverting output terminal of the flip-flop circuit FF3. Then, as the flip-flop circuit FF1 is reset, the flip-flop circuit FF3 returns to the reset state again. Further, the output of the NAND gate circuit G5 becomes "H" level, and the light emission of the light emitting diode PD2 is stopped.

By stopping the light emission of the light emitting diode PD2, the DC motor M
However, the rotary blade 7 and the rotary member 9 rotate due to inertia, and the detected portion 9a passes the position of the detector 10. Therefore, the light receiving transistor PTr1 is turned off again, and at this time, the flip-flop circuit FF2 is inverted through the inverter Iv2 and the NAND gate circuit G4, and the output of the inverter Iv3 becomes the “H” level. As a result, the output of the NAND gate circuit G6 becomes "L" level, and the light emitting diode PD3 emits light. Due to the light emission of the light emitting diode PD3, the light receiving transistor PTr3 is turned on and the DC motor M is reversed.

In this way, every time the detector 10 detects the detected portion 9a of the rotating member 9, the flip-flop rotation FF2 is inverted at the end of the detection signal, and the DC motor M repeats normal rotation and reverse rotation. By repeating this, the rotary blade 7 and the rotary member 9
When the detector 10 detects the detected portion 9a of the rotating member 9, the normal rotation and the reverse rotation of the rotary blade 7 are stopped and the rotary blade 7 stands still at the initial position.

Further, in the above cutting operation, when the continuous bill 1 cannot be completely cut and the rotary blade 7 is stopped in contact with the continuous bill 1, the inverted output of the monostable circuit MM is reached after the lapse of time t. The signal from the terminal changes to "H" level and the flip-flop circuit FF1 is reset. As a result, the output of the AND gate circuit G7 'becomes "H" level and the light emission of the light emitting diode PD2 stops, so that the DC motor M stops.

As described above, the continuous bill 1 is appropriately transferred by the transfer rollers 2 and 3, and the continuous bill 1 is cut into an appropriate length by the rotary cutter including the fixed blade 6 and the rotary blade 7, and the cut single-leaf card. 1a is sequentially stacked in the stacker 13 by the delivery rollers 11 and 12.

(Advantages of the Invention) As described above, the continuous bill cutting device according to the present invention transmits the driving force of the DC motor through the belt means, and therefore, the noise is lower than that of the conventional gear mechanism. Less is.

In addition, since a single detector detects the detected part of a rotating member that has a predetermined inertia and repeats forward and reverse rotations, it is possible to detect a plurality of cutouts in a plurality of control panels as in the past. The assembly process and adjustment process are simpler than those detected by a device. Further, by repeating the forward and reverse rotations of the DC motor to gradually reduce the inertia of the fixed blade and the rotating member, the rotary blade is automatically stopped at the initial position. Accurate even if the continuous bill has various attributes, compared to the structure in which the driving of the rotating DC motor is stopped and the rotary blade is stopped at the initial position by the inertial rotation of the rotary blade in one direction. In addition, the rotary blade can be surely automatically stopped at the initial position, and a member for forcibly stopping the rotary blade such as the positioning member and the engaging portion at the initial position is not required, which reduces the number of parts. Assembling process can be simplified and production cost can be reduced.Furthermore, there is no collision between the engaging part of the rotation control member and the positioning member for forcibly stopping the rotary blade to the initial position, and there is less noise. Have .

[Brief description of drawings]

Each drawing shows an embodiment of the present invention. FIG. 1 is a partially cutaway side view showing an example in which the device according to the present invention is applied to a tag printer, and FIG. 2 shows a drive control circuit of the cutting device. 3 and FIG. 3 are timing charts showing the operation of the drive control circuit shown in FIG. In the drawing 1 ... Continuous bill, 6 ... Fixed blade 7 ... Rotating blade, 9 ... Rotating member 9a ... Detected part, 10 ... Detector M ... DC motor, MM ... Monostable circuit FF1〜 FF3 …… Flip-flop circuit G1 to G8 …… Gate circuit Iv1 to Iv6 …… Inverter PD1 to PD3 …… Light emitting diode PTr1 to PTr3 …… Light receiving transistor Tr1 to Tr4 …… Transistor

Claims (1)

[Claims] 1. A rotary cutter for cutting a continuous bill by a fixed blade and a rotary blade, a DC motor for rotationally driving the rotary blade via belt means, and a rotary blade having a predetermined inertia and interlocking with the rotary blade. And a rotating member having a detected portion at a predetermined position, a single detector that detects the detected portion of the rotating member and outputs a detection signal when the rotary blade is at the initial position, and from this detector Switching means for alternately outputting the forward rotation signal and the reverse rotation signal after the detection signal disappears after the detection signal is output, and the forward rotation signal output from the switching means after rotating the rotary blade once and It is characterized by comprising motor drive means for reducing the inertia of the rotary blade and the rotary member to automatically stop at the initial position by repeating the forward rotation and the reverse rotation of the DC motor based on the reverse rotation signal. Cutting device of continuous bill to be.