JPS5911056Y2 - Intermittent label feeder - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an intermittent feeding device for labels.

The labels are affixed at predetermined intervals on a semi-permeable release liner that extends between the supply reel and the take-up reel.

Conventionally, for this label feeding, a photoelectric device that receives light from a light emitting diode or the like is provided with the release liner interposed therebetween, and after the release liner starts to be conveyed, it is detected that the brightness of only the release liner has been reached, for example. Then, conveyance of the release liner is completed.

However, if one label is missing on the way, the next label can only be obtained by instructing the start of conveyance several times, making it difficult to operate and reducing work efficiency. ing.

Therefore, the present invention provides an intermittent label feeding device that can improve the above-mentioned operability, and the present invention provides an intermittent label feeding device that can improve the above-mentioned operability. The system is configured so that the conveyance ends when a dark state is reached when the label is present, and the conveyance is started so that the motor for feeding the peel-off line does not rotate continuously even if the peel-off liner runs out. The device is characterized in that it is provided with a timer circuit that starts timing at the same time.

An embodiment of the present invention will be described below based on the drawings.

Figure 1 shows the structure of the intermittent label feeding device, where 1 is a release mount stretched between a supply reel 2 and a take-up reel 3, and 4 is a release mount pasted on the release mount 1 at predetermined intervals. 5 is an induction motor that takes up the label 4 and conveys it to the reel 3 side [in the direction of arrow A]; 6 is a switch that instructs to start conveying the label 4; 7 is an R-S flip-flop set by the output of the switch 6; 8; is a relay that controls the power supply circuit of the motor 5 on and off, and the winding 8a is the relay that controls the power supply circuit of the motor 5.
When the output Q of the flip-flop 7 is inverted to logic level "H", it is excited via the driver 9, and the a contact 8
b is connected in series to a closed circuit consisting of a motor 5 and an AC power source 10.

Reference numeral 11 denotes a timer circuit which starts counting at the timing when the output Q of the R-S flip-flop 7 is inverted to the logic level "H" and detects the elapse of a specified time T, and is composed of a monostable multivibrator or the like.

Reference numeral 12 denotes a light receiver located in the movement path of the release liner 1 to which the label 4 is attached. placed on the route.

14 is an amplifier for amplifying the signal corresponding to the brightness of the output of the light receiver 12; 15 is a differential circuit connected to the output of the amplifier 14;
A pulse P is output by detecting the timing at which the state changes from the state where only the peeling mount 1 and the label 4 are present.

16 is an OR gate, the output of the differentiating circuit 14 and the time-up output of the timer circuit 11 are connected to the input side, and the RS flip-flop 7 is reset by the preceding one of the output of the differentiating circuit 15 or the timer circuit 11. .

In addition, when the RS flip-flop 7 is reset, the clock of the timer circuit 11 is reset by the output of the OR gate 16.

FIG. 2 shows the structure of a label issuing machine attached to a charge scale or the like, and is a specific example of the intermittent label feeding device shown in FIG.

17 is a control circuit for the motor 5 shown in FIG. 1, 18 is a turning roller, and 19 is a peeling table whose tip is finished at an acute angle.
9 between the supply reel 2 and the take-up reel 3.

20a and 20b are tension rollers disposed on the movement path of the peeling paper 1 between the peeling table 19 and the take-up reel 3, and the roller 20a is intermittently driven in the direction of arrow B by the motor 5. .

21a and 21b are a type wheel section and a type hammer section which constitute the line printer 21, and print predetermined items on the label 4.

Since the structure is as described above, when the switch 6 (Fig. 3a) as a label issuing switch is operated, the flip-flop 7 (Fig. 3b) is set, and a
The contact point 8b enters the make state, and the motor 5 starts rotating.

When the motor 5 starts rotating and the tension pulley 20a rotates, the release mount 1 starts moving.

As the release liner 1 moves, the output of the light receiver 12 [FIG. 3C] first changes from "dark" to "bright", and then, when the subsequent label 4 arrives, it reverses from "bright" to "dark". .

At timing t1 when the output of the photoreceiver 12 changes from "dark" to "bright", the output of the differentiating circuit 15 [Fig. 3 d] receives a pulse P.
is generated, and the pulse P acts on the reset terminal of the flip-flop 7 via the OR gate 16 to instruct the end of the transfer, and the timer circuit 11 is in the middle of timing [Fig. 3e]
Reset.

By resetting the flip-flop 7, the power to the motor 5 is turned off, and the feeding of the release liner 1 is completed.

Therefore, even if only one label is missing on the way, it will be reliably transported and automatically stopped until the next label arrives in front of the light receiver 12.

The label that has been printed is adjusted so that it is held with a portion remaining on the peeling table 19 as shown in FIG. 2 at the end of label feeding.

3a to 3e are cases in which a pulse P is generated at the output of the differentiating circuit 15 within the specified time T of the timer circuit 11. If the pulse P is not generated in the output of the differentiating circuit 15 due to a breakage or the like, the time-up of the timer circuit 11 is detected and the motor 5 is actively prevented from overheating due to continuous operation.

4a-e are waveform diagrams when the pulse P is not generated within the specified time T of the timer circuit 11, and FIGS. 3a-e, respectively.
It corresponds to e.

In the above embodiment, the light receiver 12 is the turning roller 1
8 and the line printer 21, but between the line printer 21 and the peeling table 19, or between the supply reel 2
and the turning roller 19.

As explained above, according to the present invention, the following effects can be obtained.

(1) Even if one label is missing on the way, the arrival of the next label is detected and the machine reliably stops, improving operability.

(2) Even though the system is designed to detect the arrival of the next label and stop, if the timing starts at the start of transportation and the arrival of the next label is not detected for a predetermined period of time, the timer circuit Since the conveyance is stopped, it is possible to actively prevent the drive source that feeds the label intermittently from operating continuously, and it is possible to prevent the drive source from overheating.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a structural diagram of an intermittent label feeding device, Fig. 2 is a structural diagram of a label printing machine equipped with an intermittent label feeding device, and Fig. 3 a-e and Figure 4a
-e is an explanatory diagram of the operation of FIGS. 1 and 2. 1... Release mount, 2... Supply reel,
3... Take-up reel, 4... Label, 5... Induction motor, 7... R-S flip-flop, 8... Relay 11...
・Timer circuit, 12...Receiver, 15...
...Differential circuit, 16...OR gate, T...
... Specified time of the timer circuit 11.

Claims (1)

[Scope of utility model registration request] This is a device that intermittently feeds labels pasted at predetermined intervals on a release liner stretched between a supply reel and a take-up reel, and is set by a conveyance start signal and then a conveyance completion signal is input. a motor control means for controlling a power source to transport the release liner until the label is transported; a charging means disposed in the movement path of the label to detect the arrival of the label; An intermittent label feeding device characterized in that a timer means for starting time measurement at the start of label conveyance is provided, and a signal which precedes either the output of the charging means or the output of the timer means is supplied to the motor control means as the conveyance completion signal.