JPS6340740B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to the structure of a labeling machine that supplies a plurality of roll labelers. In contrast to leaf-type labeling machines that use single labels that have already been cut, there are continuous-type labeling machines that pull out uncut, rolled labels, cut them just before gluing, and affix them to containers. Although this type of labeling machine (roll labeler) that uses roll labels has many advantages, it has the disadvantage that the equipment must be stopped in order to replenish 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 provides a multi-roll supply type labeling machine that uses roll labels and is capable of continuous processing with high efficiency without stopping time for replenishing roll labels. The purpose is to 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. This second suction drum 5' and the first suction drum 5
They are spaced apart from each other by at least the length of one label after cutting, and are spaced apart by the interval at which the labels are fed to the pasting drum 6. If the distance between the two drums is less than the length of one label, the labels will overlap each other on the pasting drum when switching from the second device to the first device. <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, the operation will be explained. <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. a signal that the second suction drum 5' starts rotating;
or either the second supply device or the second supply device;
The first signal indicates that all the supply devices have started operating.
Input to the suction drum 5 of the supply device. As a result, the clutch of the suction roller 5 of the first supply device is disengaged and the operation is stopped. 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. A signal for stopping the suction drum 5' of the second supply device is input to the suction drum 5 of the first supply device. That signal causes the clutch of the suction drum 5 of the first feeder to engage, but does not start rotating at that moment, but rather that the last label from the second feeder is connected to the suction drum 5 of the first feeder. After passing through step 5, the first supply device is configured to start driving. Since the timing of label supply from both supply devices is the same, the next label supplied from the first supply device is separated by a predetermined interval from the last label from the second supply device, It is pasted to the next container at the exact location. Therefore, switching from the second supply device to the first supply device is performed smoothly and without missing a single sheet. The above switching signal system can be summarized as follows.

[Table] <C> Supplying the tape roll Since the supply device that has finished supplying tape has stopped operating, place a new tape roll 8 on the roll table 1, cut off its tip at the correct position, and place it between each roller. Leave the first sheet on the verge of cutting with the cutter 4. 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, there are two sets of supply devices each consisting of roll pulling, cutting, and suction devices, and when the end of the tape in the first device is detected, the operation of the second supply device is started. a plurality of tape feed devices configured to detect an end of the tape at the second feed device to stop the feed operation of the second feed device and to start operation of the first feed device; This is a roll-feed labeling machine. 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. Furthermore, in that case, the apparatus of the present invention is configured to first turn on and off the first supply device and then turn off and on the second supply device by detecting the tail end of the tape. As a result, clear operations can be performed with a simpler configuration than providing separate and independent signal systems for each of the first and second supply devices.

[Brief explanation of drawings]

Figure 1: Overall layout, Figures 2 to 5: An explanatory diagram of an embodiment of the tape end holding device, Figure 6: An explanatory diagram of the signal system 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 roll pull-out, a cutting, and a suction device are provided for one pasting drum; The rolls for supplying the tape to the pasting drum of the combination supply device are positioned so as to be spaced apart from each other by the label supply interval, and at the same time the end of the tape is detected in the first feeding device located on the downstream side of the rotation of the pasting drum, the tape is pasted. starting the operation of the second feeding device, located upstream of the rotation of the drum, and simultaneously stopping the operation of the first feeding device, while the second feeding device, located upstream of the rotation of the pasting drum; At the same time as the end of the tape is detected in the device, the feeding operation of the second feeding device is stopped, and after the last label fed from the second feeding device has passed through the feeding section of the first feeding device, the feeding operation of the second feeding device is stopped. A multi-roll feeding labeling machine configured to initiate operation of a feeding device.