JPH044212B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Technical Field of the Invention The present invention relates to a labeling device.

Technical Background of the Invention and Problems Therein Conventionally, as shown in FIG. is peeled off from the mount 1 and supported by the label holder 4 using rollers,
The movable body 6 having the ventilation pipe 5 which is constantly connected to the vacuum pump is moved from the home position shown in FIG. 1 to the label suction position on the label receiver 4 shown in FIG. The label 3 is pushed up to the movable body 6 by the plunger 8 of 7,
A label in which the movable body 6 is temporarily returned to the home position as shown in FIG. 1d, and then the movable body 6 is lowered as shown in FIG. 1e to attach the label 3 to the object 9. There is a pasting device.

However, since the ventilation pipe 5 is always connected to the vacuum pump, one side of the label 3 is sucked by the movable body 6 when the movable body 6 approaches the label receiver 4 as shown in FIG. 1b. Figure 1 d, e
As shown in FIG. 2, the label 3 is located off-centered both with respect to the movable body 6 and with respect to the object 9 to be pasted, and the state of pasting is not good.

Moreover, although the label 3 is pasted by the downward movement of the movable body 6, negative pressure is applied even during pasting, making it difficult to separate from the movable body 6, which has the disadvantage of causing poor pasting.

Purpose of the Invention The present invention has been made in view of the above points, and an object of the present invention is to provide a label pasting device that can prevent labels from being misaligned in the pasting position and can reliably paste labels.

Summary of the Invention This invention connects the ventilation path to a negative pressure generating section when a movable body having a ventilation passage reaches a fixed position above a label holder, thereby sucking the label to the fixed position of the movable body. The label is carried directly above the object to be affixed, and at the label affixing position, the ventilation path is blocked off from the negative pressure generation part to keep the label away from the movable object, thus ensuring that the label is in the correct position on the object to be affixed. In addition, by providing a compressed air supply section, the negative pressure generation section and the ventilation path are connected to the compressed air supply section after the negative pressure generation section is shut off, and the label can be applied more reliably using wind pressure. It is.

Embodiment of the Invention A first embodiment of the invention will be described with reference to FIGS. 2 and 3. Components that are the same as those described in FIG. 1 are designated by the same reference numerals, and description thereof will be omitted (the same applies hereinafter). The movable body 6 is provided with a pole 11 that holds a reed switch 10, and an arm 13 that holds a magnet 12 is attached to the pole 11 so as to be able to slide freely while being biased upward. Arm 1
Although not shown, 3 is held by a conveyance mechanism that moves along a path connecting a home position on the label receiver 4 and a position on the object 9 to be pasted. A vacuum pump 15, which is a negative pressure generator, is connected to port a of the switching valve 14, a port b is connected to the atmosphere, and a vent pipe 5, which is a ventilation path, is connected to port c.
It is connected to the.

In such a configuration, the movable body 6 is
As shown in the figure, when the label receiver 4 is located at the upper right home position, ports b and c are connected. When the movable body 6 reaches a fixed position on the label receiver 4 as shown in FIG. The switching ports a and c are connected by the excitation operation. As a result, the label 3 on the label receiver 4 is attracted to the movable body 6 by negative pressure, and at the same time, the plunger 8 of the solenoid 7 which is activated by the signal from the position sensor described above is activated.
is pressed against the movable body 6 by. Therefore, the label 3 is attracted to the movable body 6 in a fixed position. Next, the movable body 6 returns to the home position as shown in FIG. 3c, approaches the object 9 on the conveyor 16 as shown in FIG. 3d, and then returns to the home position as shown in FIG. 3b. As shown, the movable body 6 is attached to the object 9
come into contact with. At this time, the arm 13 further elastically descends to apply a pressing force, but the switching valve 14 is switched by a switching signal from the reed switch 10 facing the magnet 12, and ports b and c are connected. Therefore, the ventilation pipe 5 is connected to the atmosphere, the label 2 is easily separated from the movable body 6, and the label 2 is reliably affixed to the object 9 at a fixed position by the pressing force of the movable body 6.

Next, a second embodiment of the present invention will be explained based on FIGS. 4 and 5. In this embodiment, instead of the reed switch 10, a proximity sensor 17 using a photoelectric element is provided on the movable body 6. Arm 1
3 and the like are omitted, and the movable body 6 itself is directly held by the aforementioned transport mechanism. The proximity sensor 17 has a light emitting element that emits light downward and a light receiving element that receives reflected light from below.

Next, a switching valve 18 is connected to port b of the switching valve 14.
port c is connected. Port a of this switching 18 is connected to a compressor 19 which is a compressed air supply section.
, and port b of the switching valve 18 is connected to the atmosphere.

In such a configuration, in the state shown in FIG. 5a, the ports b and c of the switching valves 14 and 18 are connected, and the intake pipe 5 is communicated with the atmosphere. When the movable body 6 reaches the fixed position shown in FIG. is attracted to the movable body 6 by negative pressure and is pressed against the movable body 6 by the solenoid 7. Next, when the movable body 6 returns to the home position as shown in FIG. 5c and approaches the object 9 as shown in FIG. Upon receiving the reflected light, the proximity sensor 17 emits an H level signal, and as a result, the switching valve 14 returns to the state where ports b and c are connected, and the switching valve 18 connects the excited ports a and c. will switch to the connected state. This results in
The label 3 is released from the negative pressure and is instead firmly affixed to the object 9 by the wind pressure of the compressor 19. When returning from the state shown in FIG. 5b to the state shown in FIG. Return.

Effects of the Invention Since the present invention is configured as described above, when the movable body is moved to a fixed position on the label receiver, the ventilation path is communicated with the negative pressure generating section to suck the label to the fixed position of the movable body. When applying the label, it is possible to cut off the negative pressure generating part and the ventilation path so that the label can be applied in a state where it is easy to peel off from the movable body, and further,
By switching the ventilation path from the negative pressure generation section to the compressed air supply section and connecting it, the label can be attached using wind pressure while the movable body is separated from the object, and therefore the label can be attached to the object. This has the effect of preventing misalignment of the label and making it possible to reliably attach the label.

[Brief explanation of drawings]

Fig. 1 is a side view showing the conventional structure and its operation, Figs. 2 and 3 are related to the first embodiment of the present invention, and Fig. 2 shows the connection state between the ventilation pipe and the vacuum pump. FIG. 3 is a side view showing the structure and operation of the movable body, FIGS. 4 and 5 are related to the second embodiment of the present invention, and FIG. 4 is a diagram showing the ventilation pipe. Pipe diagram and side view showing the connection state of the vacuum pump and compressor, No. 5
The figure is a side view showing the structure and operation of the movable body. 2... Label peeling body, 3... Label, 4... Label receiver, 5... Ventilation pipe (air passage), 6... Movable body, 14... Switching valve, 15... Vacuum pump (negative pressure generation part) ), 18... switching valve, 19... compressor (compressed air supply section).

Claims (1)

[Scope of Claims] 1 A label removable body is provided with a label holder that supports the peeled label, and a movable device that moves between a home position and the label holder and moves up and down between the home position and the label pasting position. A ventilating passageway opening at the bottom is provided in the body, and a position detection means is provided for detecting when the movable body has reached a fixed position facing the label receiver, and when the movable body has reached the fixed position facing the label receiver. A signal from the position detection means connects the ventilation path to the negative pressure generation section, and presses the label against the movable body until the movable body approaches the label pasting position. A labeling device characterized by being provided with a switching valve that continues connection with the labeling device. 2. The label peeling body is provided with a label holder that supports the peeled labels, and the movable body that moves between the home position and the label holder and moves up and down between the home position and the label pasting position is provided with ventilation opening at the bottom. a position detecting means for detecting that the movable body has reached a fixed position facing the label receiver; Connecting the ventilation path to the negative pressure generation section by a signal, and pressing the label against the movable body to continue connecting the ventilation path and the negative pressure generation section until the movable body approaches the label affixing position. Provided with a switching valve,
A label pasting device characterized in that a compressed air supply unit is provided which is connected to the ventilation path for a certain period of time by a switching operation of the switching valve after the movable body approaches the label pasting position.