JPS6317699B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a labeling machine.

In contrast to labeling machines that use a single label that has already been cut, there is a labeling machine that pulls out an uncut rolled label, cuts it immediately before gluing it, and attaches it to a container.

Although this type of labeling machine (roll labeler) using roll labels has advantages, it has the disadvantage that the machine must be stopped for replenishment of labels after one roll has been consumed.

On the other hand, recent roll labelers aim to increase speed, and devices that can process 600 to 1000 sheets per minute have been developed, but when cutting and pasting at that high speed, one roll is consumed in about 10 to 15 minutes. As a result, the proportion of time wasted for exchanging rolls will greatly affect processing efficiency, potentially rendering high-speed processing meaningless.

The present invention was made to improve these points, and an object of the present invention is to provide a roll labeler that uses roll labels and can perform continuous processing with high efficiency without stopping time for replenishing roll labels. do.

Next, an example will be described.

<A> In FIG. 1, 1 is a roll stand, 2 is a tension roller, 3 is a pull-out roller, 4 is a cutter, 5 is a suction drum, 6 is a pasting drum, and 7 is a gluing drum.

Then, the tape roll 8 on the roll stand 1 that is pulled out between the two pull-out rollers 3 is cut into one label size with the cutter 4, and pasted one by one onto the container 10 on the conveyor 9 with the suction drum 5. The structure for attaching it is known.

<B> Configuration of second set In the present invention, a second set of tape supply units is further provided, that is, a device for supplying cut labels to the pasting drum 6 is provided in parallel with the first set of tape supply units.

For this purpose, a second roll stand 1', a second tension roller 2', a second pull-out roller 3', a second cutter 4', and a second suction drum 5' are installed.

In the embodiment, the second suction drum 5' is the first suction drum 5'.
It is installed upstream of the rotation of the pasting drum 6 rather than the suction drum 5.

<C> End Holding Device Furthermore, each roll supply section of the present invention is provided with an end holding device 11, respectively.

In the current device, when the entire tape roll 8 is used and the end of the tape T comes off the roll table 1, there is nothing to support the end _T1 , so it sags and falls to the floor, making further processing impossible. becomes. (FIG. 2) For this purpose, the present invention provides an end holding device 11, which can be constituted by a suction device having a slit 11a close to the width of the tape T, for example. (Fig. 3) Also, a flange 1 having a diameter larger than that of the tension roller 2 or other roller 11b is concentric with the lower part of the tension roller 2 or another roller 11b.
1c may be provided in a protruding manner, and the upper surface of this flange portion 11c may be aligned with the lower surface through which the tape passes. (4th
(Figure) Alternatively, a receiving groove 11d may be provided in the tape T passage path so that the tape T always passes through this groove 11d. (FIG. 5) <D> End Detection Device Furthermore, each roll supply section of the present invention is provided with an end detection device 12, respectively.

This detection device 12 is provided closer to the roll stand 1 than the end holding device 11, and detects the end of drawing out the tape roll 8.

For this purpose, for example, a phototube is used to detect the presence of the tape T by the light beam reflected on the back surface of the tape T while the tape T is passing, and as soon as the tape T stops passing, the reflected light disappears and a signal is output. Configure it like this.

The tape T end passing signal initiates the operation of the suction drums 5, 5' of the other set of roll feeders.

It is also possible to use a method in which a phototube checks the end display displayed at the end of the tape T and outputs a signal.

Furthermore, a similar operation can be performed by a signal in which a tension pulley or the like is pressed against the tape and the pressing force is suddenly released when the end of the tape T is reached, thereby changing the position of the pulley.

Next, I will explain the operation.

<A> First supply device→Second supply device When the tape roll 8 on the roll stand 1 of the first supply device is completely pulled out, the end of the tape T held by the end holding device 11 is detected by the end detection device 12. pass in front of

The detection signal from the end detection device 12 is input to the suction drum 5' of the second supply device, and, for example, an electromagnetic clutch is engaged and rotation begins immediately.

At the same time, the pull-out roller 3', cutter 4', etc. of the second supply device also start operating, and the cut labels are transported to the suction drum 5' and the pasting drum 6.

Suction drums 5, 5' of the first and second feeding devices
A phototube 13 for detecting the pasting drum is installed between them. Then, this phototube 13 detects the first label supplied from the second supply device,
The clutch of the suction roller 5 of the first supply device is disengaged and the operation is stopped.

That is, the configuration is such that the operation of the first supply device is stopped after confirming the presence of the first label supplied to the label pasting drum 6 from the second supply device. (Upper row of FIG. 6) By performing such confirmation, it is possible to prevent the occurrence of missing labels.

Therefore, the switching from the first feeding device to the second feeding device is performed smoothly and without missing a single sheet.

<B> Second supply device → first supply device When the end detection device 12' of the second supply device detects the end of the tape T, the input is input to the suction drum 5' of the second supply device, and the clutch is disengaged to stop the operation. .

Then, the supply to the pasting drum 6 is stopped and the pasting drum detection phototube 13 checks for the absence of a label.

That is, the configuration is such that, after the supply from the second supply device onto the pasting drum is completed and the absence of a label on the pasting drum is confirmed, driving of the first supply device is started. (FIG. 6, lower part) By adopting such a configuration, it is possible to prevent double supply of labels from occurring.

If this phototube 13 is adopted, for example, as a phototube 13 that blinks a predetermined number of times per rotation in synchronization with the rotation of the pasting drum 6, it can be checked because there is no reflected light when no label is present.

The detection signal from the phototube 13 connects the clutch of the suction drum 5 of the first supply device, and the suction drum 5 and other parts start rotating.

Therefore, switching from the second supply device to the first supply device is performed smoothly and without missing a single sheet.

<C> Supply of tape roll Since the supply device that has completed the tape operation has stopped, a new tape roll 8 is placed on the roll stand 1, its tip is cut off at the correct position, and the tape is passed between each roller to cutter 4. Leave the first sheet on the verge of cutting.

In the present invention, as described above, a roll of tape is pulled out and single labels cut with a cutter are fed one by one to a pasting drum by a suction drum.
In a device for pasting onto containers using a pasting drum, two sets of supply devices each consisting of a roll drawing, cutting, and suction device are provided, and the end of the tape in the first device is detected to start the operation of the second device; The first device is configured to start operating upon detecting the end of label supply from the second device to the pasting drum.

Therefore, in contrast to conventional equipment that operates at high speed for labeling but requires a large amount of downtime to replace the rolled label tape, this new system can operate continuously for hours without any downtime. This is possible and can greatly improve efficiency.

Also, because the tape is pulled out with relatively strong force and at high speed, it may sometimes break, but even in that case, other sets of supply devices that are on standby will work immediately.
After all, switching is possible without missing a single sheet.

[Brief explanation of the drawing]

FIG. 1: Overall layout, FIGS. 2 to 5: An explanatory diagram of an embodiment of the tape end holding device, and FIG. 6: An explanatory diagram of the switching state of the first and second supply devices. 1: Roll stand, 2: Tension roller, 3: Pull-out roller, 4: Cutter, 5: Suction drum, 1
1: Termination holding device, 12: Termination detection device.

Claims (1)

[Claims] 1. A single label obtained by pulling out a roll of tape and cutting it with a cutter is cut into a single label by a suction drum.
In a device that supplies sheets one by one to a pasting drum and sticks them onto a container using the pasting drum, two sets of supply devices each consisting of a roll stand, a device for pulling out rolls, a cutting device, and a suction device are provided for one pasting drum. A detection means for detecting the end of the tape in the first supply apparatus, and a control means for starting the operation of the second supply apparatus in response to a signal from the detection means, are used to supply labels one by one from the second supply apparatus. a detection means for supplying the label to the pasting drum, and being located between the first supply device and the second supply device, and detecting the state of supply of the label from the second supply device to the pasting drum; stopping means for stopping the operation of the first supplying device after detecting the first label supplied to the pasting drum from the second supplying device; a detection means for detecting; a stop means for stopping the operation of the second supply device according to a signal from the detection means; and a second supply device located between the first supply device and the second supply device. a control means for detecting the absence of a label by the detection means for detecting the supply state of the label from the pasting drum to the pasting drum, and for starting the operation of the first supply device by the detection means; A labeling machine.