JPH0360730B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a labeling device that peels off a label from a mount and affixes the label to an article to be affixed.

[Prior art]

2. Description of the Related Art Conventionally, many labeling devices have been proposed that automatically peel a label on which various data such as weight and price are printed from a backing paper and affix it to an article. One example is a method in which a label that has been peeled off from a backing paper is affixed by being blown with compressed air. This method has the disadvantage that if the backing paper and the label are not completely separated, the label may be attached at a different position when spraying, or the label may be incompletely attached. In order to solve this problem, a label adsorbent that adsorbs and peels labels from a mount using a vacuum has an inclined or arcuate label adsorption surface [Utility Application No. 55-159965 (Utility Model Application No. 57-86916). Public bulletin)
issue〕. Alternatively, when a label is adsorbed to a label adsorbent, the adsorption surface is moved in the direction of label spraying [Patent Application No. 104753/1986]
No. 59-13377], and a method in which the issued label is sprayed onto a suction surface using a sub-nozzle so that the label is completely peeled off from the mount depending on the shape of the suction surface has been proposed.

[Problem that the invention seeks to solve]

However, the labeling device incorporating the above solution has a complicated structure, and the elasticity of the label changes depending on the label conditions, especially changes in humidity, making it impossible to completely separate the backing paper and the label. There were flaws.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a label affixing device that has a simple structure, can completely separate a label from a mount, and can accurately affix a label to an article. be.

[Means for solving problems]

The present invention provides a label pasting device that includes a peeling section that peels off the label from the backing paper by bending the backing sheet on which the label is pasted at an acute angle with a peeling plate, and a peeling section that is located in front of the peeling section and temporarily removes the label that has been peeled off by the peeling section. The label is provided with a suction blowing section that sucks in air and blows compressed air at a predetermined timing to blow away the label. The tip of the hole is connected by a groove provided on the label contacting surface that extends to both ends of the label contacting surface.

The present invention is also characterized in that the upper surface of the peeling plate of the peeling portion has a surface shape other than a flat surface.

In addition, the label pasting device is equipped with a blower that applies the same principle to gas as a Wesco type pump, which has a suction port and a blowing port and performs suction and blowing at the same time, and a suction/blowing section that connects the suction and blowing ports of the blower. The present invention is characterized by comprising a rotary valve that connects the suction blowing section provided on the pipe to the suction port or the blowing port of the blower at a predetermined timing.

[Effect]

The label pasting device according to the present invention peels off the label from the backing paper by bending the backing paper at an acute angle with a release plate, and temporarily sucks the peeled label with the suction spraying section and sprays the label at a predetermined timing. Labels can be accurately affixed to article surfaces.

In addition, since the tip of the suction spray hole of the suction spray section is connected to the groove that runs through both ends of the label contact surface, air that provides suction to the label can flow through this groove, making it possible to connect it to the Wesco type pump. Even if a blower with a strong suction force is used, which applies the same principle to gases, the suction force can be alleviated.

In addition, the upper surface of the release plate of the release section may have a surface shape other than a flat surface, for example, a protruding circular arc surface.
Effectively works to separate labels and backing paper.

In addition, by connecting the suction blowing part and the suction inlet or air outlet of the blower, which applies the same principle to gases as the Wesco type pump, at a predetermined timing using a rotary valve, suction can be achieved with a single blower with a simple structure. and can be sprayed.

〔Example〕

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

1 to 7 are diagrams showing the structure of the label pasting device according to the present invention, in which FIG. 1 is a side sectional view of the label pasting section, FIG. Sectional view seen from the direction of arrow A in Fig. 2, No. 4
The figure shows the label contact surface of the suction spray part, Figure 5 is a view seen from the direction of arrow B in Figure 2, and Figure 6 is the view from the direction of arrow B in Figure 2.
FIG. 7, which is a view seen from the direction of arrow C in the figure, is a front sectional view showing the shape of the peeling plate of the peeling part.

As shown in FIG. 2, the overall structure of the labeling apparatus is such that a supply reel 2, a take-up reel 3, a printing section 4, a label peeling section 5, and a labeling section 6 are housed in an apparatus frame 1. Supply reel 2 has
A label strip with labels pasted at predetermined intervals is wound around a mount, and a printing section 4 prints various data such as the weight and price of the article on the labels of the label strip supplied from the supply reel 2. . Next, the printed label is peeled off from the mount by the label peeling section 5, and the peeled label is pasted onto the surface of the article by the label sticking section 6.

The label pasting section 6 has a suction spraying section 7 that sucks and holds the peeled label and sprays it at a predetermined timing. The suction spray section 7 includes a box-shaped main body 8.
A cylindrical suction air outlet 9 is provided at the top of the
The suction/air outlet 9 is connected to a blower, which will be described later, through a pipe 10. A suction/spraying body 11 is provided at the bottom of the main body 8 for sucking and spraying the label.

The structure of the suction blower 1 includes an inclined surface 11a that is cut at an angle of approximately 45 degrees on the label loading entrance side, and an inclined surface 11b that is gently sloped from the apex of the slope toward the unloading side.
It forms a label contact surface consisting of.
Further, the label contacting surface protrudes in an arc shape in the width direction (see FIG. 3), and a plurality of holes 12 for suction and spraying are formed that communicate from the label contacting surface into the main body 8. Air is sucked through the plurality of holes 12 to adsorb the label, and compressed air is sent to spray the label. At this time, the arcuate protrusion of the label contact surface effectively separates the label from the mount when the label is adsorbed. In addition, the label contact surface is connected to a hole 12 for suction spraying as shown in FIG.
A plurality of grooves 13 are provided that communicate with both ends. Such a plurality of grooves 13 allows the label to absorb excessively strong suction force from the blower by using air sucked in from the grooves 13. Further, the label contact surface of the suction spray body 11 is treated with Teflon to prevent adhesive from adhering to it.

On both sides of the upper rear end of the main body 8 of the suction spray section 7,
Members 14 and 15 bent into an L-shape are fixed, and adjustment screws 16 and 17 for adjusting the height of the suction/spray section are attached to the members 14 and 15.
is engaged.

A peeling assisting member 19 is provided at the rear end of the suction spraying section 7 to assist in separating the label from the backing paper. The peeling auxiliary member 19 is made of a plate-like member, and its tip serves as a pressing portion 19a that moves up and down between the rear end of the suction blower 11 and the tip of the peeling plate 20 of the label peeling unit 5. ing. Pressing part 1
The tip of 9a has an inclined shape rising from the center to both sides, and both ends are connected to the suction spray body 1 by guide members 21 made of a resin material with a low coefficient of friction.
1 and the peeling plate 20. A drive mechanism 22 that drives the peeling auxiliary member 19 up and down includes a drive rod 23 formed in a substantially L-shape;
A solenoid 25 that moves the drive rod 23 clockwise around the pivot shaft 24, and a spring 2 that biases the drive rod 23 counterclockwise around the pivot shaft 24.
It consists of 6. The solenoid 25 is attached to a mounting plate 28 fixed to the device frame 1 via an L-shaped member 27.
Fixed. There is a long hole 29 in the center of the drive rod 23.
is formed, and a pin 30 fixed to the center of the upper part of the peeling auxiliary member 19 is engaged with the elongated hole 29. When the solenoid 25 is energized, the drive rod 23 rotates clockwise around the pivot shaft 24 to lower the peeling auxiliary member 19, and when the solenoid 25 is deenergized, the drive rod 23 rotates counterclockwise around the pivot shaft 24 by the spring 26. Move and raise the peeling auxiliary member 19.

The label peeling unit 5 is composed of a peeling plate 20 whose tip is formed at an acute angle and a platen roller 31. The label and the backing paper are separated at the tip of the peeling plate 20, and the label comes into contact with the label of the suction blower 11. Sent to the surface. The upper surface of the peeling plate 20 is formed of two inclined surfaces rising from the center to the upper end, as shown in a front sectional view in FIG. By forming the upper surface of the peeling plate 20 in this manner, the center part of the label is peeled off faster than both sides of the label, so that the peelability between the label 32 and the mount 33 is improved. Further, the shape of the upper surface may be formed of a plurality of surfaces or may be a curved surface as long as it is not a flat surface. Note that the upper surface of the peeling plate 20 and the label contact surface of the suction spray body 11 are arranged so that the latter is slightly lower than the former. This delicate adjustment is made by adjusting the adjustment screws 16 and 17.

Next, the label peeling section 5 and the label pasting section 6
The operation will be explained based on FIGS. 8 to 12.
As shown in FIG. 8, the label band with labels 32 pasted at predetermined intervals on a mount 33 passes between the platen roller 31 and the printing section 4, reaches the tip of the peeling plate 20, and reaches the tip of the peeling plate 20, as shown in FIG. The mount 33 is directed from the tip of the peeling plate 20 to the take-up reel. The label 32 peeled off from the mount 33 at the tip of the peeling plate 20 is sucked by the suction blower 11 and advances along the label contact surface, as shown in FIG. The rear end of the label 32 is
When the tip of the peeling plate 20 is reached as shown in FIG. 10, this is detected by an appropriate means and the transport of the labeled mount is stopped. At this time, due to the shape of the contact surface of the suction blower 11, the rear end of the label is in a state where it wraps around the lower part of the peeling plate 20 and touches the mount, and the solenoid 25 is energized. solenoid 2
5, the peeling auxiliary member 19 is lowered via the drive rod 23, and as shown in FIG. lower in between. As a result, the label 32 is completely separated from the mount 33. With the label 32 completely separated from the mount, as shown in FIG. Then, the compressed air is blown onto the label 32, and the label 32 is blown and pasted onto the article.

13 and 14 are diagrams showing the air system of a blower that sucks air from the label pasting section 6 and sends compressed air to the label pasting section 6. FIG. FIG. 14 shows the feeding state, and FIG. 14 shows the suction state. 34 is a blower, and this blower 34 is equipped with a suction port 35 and a blowing port 36, and applies the same principle to gas as a Wesco type pump (regeneration pump), and performs suction and blowing at the same time, and reduces the static pressure. is a similar blower. 37 is a switching valve connected to the blower 34, and the switching valve 37 has four openings 38 to 4.
1, and a valve 43 that rotates around a shaft 42 inside.
It is of a structure with The valve 43 is adapted to be rotated by a switching device (not shown) consisting of a rotary solenoid. The switching device switches the opening 3 at one location by switching the valve 43.
8 as a common opening, and the other two openings 3
9 and 41 are made common to the common opening 38, respectively. The common opening 38 is connected to the pipe 1
0 through the suction discharge port 9 of the main body 8 of the suction spraying section 7
Connecting. Further, the opening 39 and the air outlet 36 of the blower 34 are connected via a pipe 44, and the opening 41 and the suction port 35 of the blower 34 are connected to each other through the pipe 44.
Connect via 5. The remaining openings 40 are open to the atmosphere.

When the valve 43 is set as shown in Fig. 13, the blower 3
4, compressed air is sent to the suction blowing section 7 through the blowing port 36 and the openings 39, 38 of the switching valve 37, and is discharged to the outside from a plurality of holes 12 provided in the suction blowing body 11. This compressed air causes the label 32 that was sucked to the label contact surface of the suction blower 11 to
is blown away. On the other hand, the opening 40 of the switching valve 37
From there, air is taken in to be sent to the blower 34 and sent to the suction port 35 of the blower 34 through an opening 40 and an opening 41.

When the valve 34 is switched as shown in FIG. 14, the suction port 35 of the blower 34 and the hole 12 of the suction spray body 11 of the suction spray unit 7 are connected through the suction port 35 and the openings 41 and 38 of the switching valve 37. , air is sucked through the holes 12. Due to this suction, the suction spray body 1
The label 32 that has reached the label contact surface of 1 is sucked. At this time, the compressed air sent from the air outlet 36 of the blower 34 is released into the atmosphere from the opening 40 of the switching valve 37.

The operation of the air system diagram shown in FIGS. 13 and 14 above will be explained in conjunction with the operation of the label pasting section shown in FIGS. 8 to 12. Set it to the suction state and perform the operation shown in Figure 11 in the first step.
Set the exhaust state as shown in Figure 3.

FIG. 15 is a diagram showing the configuration of another label pasting device according to the present invention. In the same figure, Figure 1~
Portions with the same reference numerals as in FIG. 12 indicate the same or equivalent portions. The suction spray section 7 is fixed to the device frame 1 by mounting members 51 and 52. The peeling auxiliary member 19 is made of a plate-like member and has a hole 53 shaped to fit into the suction blower 11 at the center of its tip, and the tip of the hole 53 presses the rear end of the label 32. This is the pressing part 19a. The solenoid 25 is fixed to the frame of the labeling part 6 by a mounting member 54, and when the solenoid 25 is energized, the peeling auxiliary member 19 moves clockwise around the pivot shaft 55, and the pressing part 19a is moved against the peeling plate. 20 and the rear end of the suction/spraying body 11 to completely separate the label 32 from the mount. Solenoid 25
When the excitation is released, the operating rod 25a is moved by a spring (not shown), and the peeling auxiliary member 19 is moved to the pivot shaft 5.
5 in the counterclockwise direction to raise the pressing part 19a. Note that the blower, suction, and exhaust air systems are the same as those shown in FIGS. 13 and 14. According to the above embodiment, for example, the weight of packaged articles supplied from an automatic packaging device or the like is measured using an automatic weighing device, and the packaged articles whose weight has been measured are sequentially transferred to a pusher conveyor or the like to the labeling section of the labeling device. In a system that automatically attaches a label with various data such as weight, price, etc. printed on the product, the label can be attached accurately to the label attachment position of the article, and the label condition, In particular, there is no possibility that the label will not be completely separated from the mount due to humidity or the like, and that the label will not be affixed in a misaligned position or that it will be impossible to affix the label.

Moreover, if the shape of the label contact surface is made as in the above embodiment, the effect is extremely large, but the peeling auxiliary member 1
If only the effect of 9 is desired, the shape of the label contacting surface may be made flat and positioned approximately on the same line as the upper surface of the peeling plate 20.

[Effects of the Invention] As explained above, according to the invention described in claim 1, the tips of the suction spray holes of the suction spray section are provided at both ends of the label contact surface. Since they are connected through a groove that runs through them, for example, even if you use a blower with strong suction force that applies the same principle as a Wesco pump to gas, the suction force can be alleviated because the air flows through this groove.
An excellent effect is obtained in that there are no problems such as deformation of the label, and the label can be blown off smoothly.

Furthermore, according to what is stated in claim 2, the upper surface of the release plate of the release section has a surface shape other than a flat surface, for example, a surface protruding in an arc shape, thereby effectively separating the label and the mount. It can be done accurately.

Moreover, according to what is stated in claim 3, the suction blowing part and the suction port or the blowing port of the blower, which applies the same principle to gas as the Wesco type pump, are connected at a predetermined timing by a rotary valve. By doing so, suction spraying can be performed with one blower having a simple structure.

[Brief explanation of drawings]

1 to 7 are diagrams showing the structure of the label pasting device according to the present invention, in which FIG. 1 is a side sectional view of the label pasting section, FIG. Sectional view seen from the direction of arrow A in Fig. 2, No. 4
The figure shows the label contact surface of the suction spray part, Figure 5 is a view seen from the direction of arrow B in Figure 2, and Figure 6 is the view from the direction of arrow B in Figure 2.
Viewed from the direction of arrow C in the figure, FIG. 7 is a front sectional view showing the shape of the peeling part peeling plate, FIGS. 8 to 12 are partial side sectional views showing the operation of the label pasting device, FIGS. FIG. 14 is a diagram showing the suction and blowing air systems, respectively, and FIG. 15 is a side sectional view showing the structure of another labeling device according to the present invention. In the figure, 1... device main body, 2... supply reel, 3
... Winding reel, 4 ... Printing section, 5 ... Label peeling section, 6 ... Label sticking section, 7 ... Suction blowing section, 11 ... Suction blowing body, 19 ... Peeling auxiliary member, 20 ... Peeling plate, 34...Blower, 37...
...Switching valve.

Claims (1)

[Scope of Claims] 1. A peeling section that peels off the label from the mount by bending the mount to which the label is attached at an acute angle with a peeling plate; and a suction blowing section that blows off the label by sucking compressed air at a predetermined timing, and the suction blowing section has a plurality of suction blowing holes that communicate with the inside from the label contact surface, and the suction blowing section A label pasting device characterized in that the tip of the hole is connected to the label contact surface by a groove extending to both ends of the label contact surface. 2. The labeling device according to claim 1, wherein the upper surface of the peeling plate of the peeling section has a surface shape other than a flat surface. 3. The label pasting device includes a blower that applies the same principle to gas as a Wesco type pump that has a suction port and a blowing port and performs suction and blowing at the same time, and the suction and blowing portion and the suction and blowing ports of the blower. Claim 1 or 2, further comprising a rotary valve that connects the suction blowing section provided on the pipe connecting the blower with a suction port or an air blowing port of the blower at a predetermined timing. Labeling device.