JP2004203470A - Labelling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a labelling apparatus having a suction head which sucks a label with a plurality of suction openings to stick the label on an article, wherein a vacuum degree between the label stuck on the article and the suction face of the suction head is reduced. <P>SOLUTION: In the labelling apparatus having the suction head 10 which sucks the label L with a plurality of the suction openings 12 to stick the label L on the article W, a slit 14 is provided on the suction face 11 of the suction head 10. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
FIELD OF THE INVENTION
The present invention relates to a label sticking apparatus for sticking a label to an article, and more particularly to a label sticking apparatus in which a suction head is provided with a groove.
[0002]
[Prior art]
Conventionally, a plurality of protrusions formed by an elastic member and closely attached to the surface of the object to be suctioned are provided at a portion between the suction port of the suction head and the V-ring, and a passage for communicating suction air is preferably provided. 2. Description of the Related Art There is known an adsorption head that applies suction force evenly to an object to be suctioned over the entire surface of the suction head while securing the suction head, thereby improving the suction force and preventing excessive load, and quickly adsorbing the object to be suctioned. (For example, refer to Patent Document 1.)
Further, a label that is temporarily attached to a long mount at a predetermined interval is peeled off from the mount, and the peeled label is sucked by a suction head having a plurality of suction ports, and then the label is pressed and attached to a predetermined position of an article. Pasting devices are known.
[Patent Document 1]
JP-A-6-315883 (pages 2-4, FIG. 1-3)
[0003]
The suction head disclosed in Patent Document 1 is preferably used for directly adsorbing a hard object to be adsorbed such as a silicon wafer and abutting the object to be rotated against a rotating polishing member to polish the object. It is not suitable for a label sticking apparatus that peels off a label from a mount and moves to a suction head while sucking the label with the suction head.
In addition, in the conventional label sticking apparatus, the label is peeled off from the backing sheet, sucked by the suction head, and then the suction head is lowered by advancing the piston rod of the cylinder, which is the sticking member, so that the label is sucked by cardboard or wrapped articles. Pressing the head and attaching the label.When applying this label, after pressing the suction head on the article, shut off the suction pressure from the suction port of the suction head, and move the piston rod of the cylinder to the original position. The suction head is separated from the article by retreating, but if the timing to shut off the suction pressure from the suction port of the suction head is shifted, the space between the label attached to the article and the suction surface of the suction head is in a vacuum. When the piston rod retreats, the suction head lifts up the article with the label attached.If the weight of the article is heavy, the attached label is broken. That further or labeling machine is notification of the can without errors retraction of the piston rod to the upper apparatus, lines had problems such as stopping.
The timing of shutting off the suction pressure from the suction port of the suction head is performed by a timer device or the like.In recent years, the time for pressing the suction head against the article has been shortened, and there has been a tendency to improve the conveying speed of the conveyor. There is a problem that it is not easy to adjust the timing for the conveyed articles.
Further, as a method of avoiding a vacuum state between the label attached to the article and the suction surface of the suction head, it is conceivable to weaken the suction pressure of the suction head. In this case, when the label is peeled off from the backing paper and transferred to the suction head while sucking the label with the suction head, when the label falls from the suction head or when the suction head is lowered by the advance of the piston rod, the label is There may be a problem such as swinging and not being attached to a regular position of the article.
[0004]
[Problems to be solved by the invention]
The present invention has been made in view of the above problems, and in a label sticking apparatus having a suction head for sucking a label through a plurality of suction ports and sticking the label to an article, the label and the suction head attached to the article are attached. It is an object to alleviate a vacuum state between the suction surface and the suction surface.
[0005]
Another object of the present invention is to make it easier to shut off the suction pressure from the suction port of the suction head.
[0006]
Still another object is to surely attach a label to an article without weakening the suction power of the suction head.
[0007]
[Means for Solving the Problems]
That is, the present invention provides a label sticking apparatus having a suction head for sucking a label by a plurality of suction ports and sticking the label to an article, wherein a groove is provided on a suction surface of the suction head. Device.
[0008]
A label sticking apparatus characterized in that one or a plurality of grooves are provided on a suction surface of the suction head in a direction along the conveying direction of the article or in a direction perpendicular to the conveying direction of the article.
The label sticking apparatus is characterized in that the suction head includes a roller unit that abuts and presses the label on the article, and has a tilting unit that tilts the suction head downstream in the transport direction.
[0010]
A label sticking apparatus, wherein a suction force for sucking the label by the suction head is weaker than a sticking force of the label to be stuck to the article.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings. Note that the same parts in the drawings are denoted by the same reference numerals and described.
FIG. 1 is a perspective view for explaining a main part of a sticking section of a label sticking apparatus showing an embodiment of the present invention.
L is a label, and the front face F of the label L displays the contents related to the article, and the back face R of the label L is coated with an adhesive.
The sticking unit 1 sucks the fed label L and sticks the label L to an article, an inclining unit 20 (inclination means) for inclining the suction head 10 to press the label L on the article, The suction head 10 and the inclined unit 20 are configured to move up and down from a label supply position to a label sticking position.
[0012]
The suction head 10 has a suction surface 11 in close contact with the front surface F of the fed label L, a plurality of suction ports 12 for sucking the label L by suction pressure, and a detection sensor for detecting whether or not the label L is on the suction surface 11. 13, a groove L for alleviating a vacuum state generated when the suction pressure of the suction port 12 is cut off because the label L and the suction surface 11 of the suction head 10 come into close contact with each other by the suction pressure of the suction port 12, and air for sucking air from the suction port 12. It is composed of a nozzle 15 and an elastic member 16.
Since the suction surface 11 is a flat surface and the label L is suctioned by the plurality of suction ports 12, the label L can be suctioned evenly.
When the surface F of the label L is sucked to the suction surface 11 by the plurality of suction ports 12, the groove 14 suctions the entire surface where the surface F of the label L and the suction surface 11 are in close contact with each other by the suction pressure of the suction port 12. By setting the force to a portion where the surface F of the label L and the suction surface 11 are in close contact with each other, the label L can be reliably sucked without changing the suction pressure of the suction port 12 and the suction pressure of the suction port 12 is shut off. In this case, the groove 14 allows the surface F of the label L and the suction surface 11 to flow air in close contact with each other at an early stage, and a vacuum state generated when the surface F of the label L and the suction surface 11 are in close contact can be relaxed. In FIG. 1, four grooves 14 are provided along the label transport direction.
Further, the suction head 10 is provided with a pressing roller 17 for pressing the label L against the article via fixing plates 18, 18. The pressing roller 17 is rotatably held by the fixing plate 18 from both sides. It is supported by.
[0013]
The inclined portion 20 supports an inclination cylinder 23 having a piston rod 22 for inclining the suction head 10 via an engagement portion 21, and supports the inclination cylinder 23 and is connected to the suction head 10 via a shaft 24. And a support holder 25.
The lifting unit 30 includes a suction head 10 and a lifting cylinder 32 having a piston rod 31 for moving the inclined unit 20 up and down from a label suction position to a label sticking position. The piston rod 31 is fixed to the support holder 25. .
[0014]
Next, the sticking operation according to the embodiment of the present invention will be described.
FIG. 2 is an explanatory diagram for explaining a sticking operation of the label sticking apparatus according to the embodiment of the present invention.
FIG. 2A shows a state in which the label L is fed out from the direction of the arrow A and is sucked by the suction head 10.
In the above, by transporting the article W upstream of the conveyor C, whether or not the article W has passed a predetermined position is detected by an article detection sensor (not shown), and when the passage of the article W is detected, the label sticking apparatus of the present invention performs the label suction operation. At the start, the label L is fed out in the direction of the arrow A, and when the label L is detected on the suction surface 11 by the detection sensor 13, the air is sucked from the suction port 12 by the air nozzle 15 and the front end of the label L is sucked. I do. Thereafter, the label L is continuously fed out, and one label L is sucked by the suction head 10.
FIG. 2B shows that the piston L of the cylinder 32 for lifting and lowering moves the suction head 10 and the inclined portion 20 from the label suction position to attach the label L to the article W in accordance with the completion of the suction of the label L. It shows a state where it has dropped to the sticking position.
FIG. 2C shows a state in which the leading end of the label L sucked by the suction head 10 to the article W is pressed by the pressing roller 17 and attached.
In the above description, the suction head 10 and the inclined portion 20 are lowered by the piston rod 31 of the lifting / lowering cylinder 32, and the shaft 24 is suctioned to the fulcrum via the engaging portion 21 by the advance of the piston rod 22 of the tilting cylinder 23. The head 10 is tilted, and as a result, the pressing roller 17 at the end of the suction head 10 presses the label L against the article W.
At this time, since the article W is being conveyed by the conveyor C, and the conveyor C conveys the article W without stopping, the label L attached to the article W has an adhesive force on the rear surface R of the label L by the adhesive. Are sequentially attached to the article W by the pressing roller 17 that rotates. Further, at this time, the surface F of the label L and the suction surface 11 of the suction head 10 are partially brought into close contact with each other by the suction port 12 due to the groove portion 14, and the sticking force of the label L stuck to the article W is higher than the sticking force of the label L. Since the suction force between the surface F of the suction head 10 and the suction surface 11 of the suction head 10 can be weakened, and the label L is suctioned by the suction surface 11 of the suction head 10 to the end of the label L by the plurality of suction ports 12, the article The label L can be reliably attached to W.
Further, in the above, since the label L can be affixed to the article W without stopping the conveyance of the conveyor C, there is an effect that the conveyance efficiency can be improved.
Furthermore, in the conventional label sticking apparatus, when the detection sensor 13 detects that the leading end of the label L is stuck to the article W and the label L has disappeared from the suction surface 11, completion of the end sticking of the label L is determined by a timer or the like. Assuming that the suction pressure from the suction port 12 is cut off, the space between the label L affixed to the article W and the suction surface 11 of the suction head 10 is in a vacuum state. As a result, the suction pressure from the suction port 12 is reduced. However, in the present invention, the vacuum state between the label L and the suction surface 11 of the suction head 10 is relaxed by the groove 14 of the suction head 10 in the present invention. Can be easily set, such as until the article W passes through the attaching section 1.
In FIG. 2D, the label L is completely attached to the article W, the piston rod 22 of the tilting cylinder 23 is returned to the original position, and the piston rod 31 of the lifting / lowering cylinder 32 is attached to the label from the label attaching position. This shows the state returned to the position.
[0015]
FIG. 3 is an explanatory diagram for explaining a groove portion of another suction head according to the embodiment of the present invention.
The suction head 40 has a suction surface 41 in close contact with the front surface F of the fed label L, a plurality of suction ports 42 for sucking the label L by suction pressure, and a detection sensor for detecting whether or not the label L is on the suction surface 41. 43, the label L and the suction surface 41 of the suction head 40 are in close contact with each other by the suction pressure of the suction port 42, and the groove portion 44 reduces the vacuum generated when the suction pressure of the suction port 42 is cut off.
When the surface F of the label L is sucked on the suction surface 41 by the plurality of suction ports 42, the groove 44 sucks the entire surface where the surface F of the label L and the suction surface 41 are in close contact by the suction pressure of the suction port 42. By setting the force at a portion where the front surface F of the label L and the suction surface 41 are in close contact with each other, the label L can be reliably sucked without changing the suction pressure of the suction port 42, and the suction pressure of the suction port 42 is shut off. In this case, the groove portion 44 allows air to flow to the surface where the surface F of the label L and the suction surface 41 are in close contact with each other at an early stage, and the vacuum state generated when the surface F of the label L and the suction surface 41 are in close contact can be relaxed. In FIG. 3, four curved grooves 44 are provided.
[0016]
Although the groove portion of the suction head of the present embodiment has been described as having a U-shaped concave shape, the present invention is not limited to this, and the same effect can be obtained as a U-shaped or V-shaped groove. .
In addition, the size, number, shape, and depth of the grooves of the suction head may be changed according to the size of the label to be sucked, the base material, the adhesive force of the adhesive on the back surface of the label L, and the weight of the article to be stuck. It can respond to flexible adsorption and sticking.
Furthermore, the present invention provides a labeling device with a printing section, prints the contents of the article on the label surface and affixes the label to the article, or provides a cutter section for cutting a label without a mount, and cuts a label without a mount. The present invention can also be applied to a label sticking apparatus configured to stick a label to an article.
Furthermore, in the present embodiment, the suction head and the inclined portion can be moved up and down. However, the present invention is not limited to this, and the passage of articles conveyed by the conveyor without the need for the elevating portion is detected upstream of the conveyor. However, by adopting a configuration in which the inclined portion is operated, the time until the label is attached to the article is shortened, and the conveying force of the conveyor can be improved.
[0017]
【The invention's effect】
As described above, according to the present invention, in a label sticking apparatus having a suction head for sucking a label by a plurality of suction ports and sticking the label to an article, a configuration is provided in which a groove is provided on a suction surface of the suction head. In addition, the vacuum state between the label attached to the article and the suction surface of the suction head can be relaxed, and the timing for cutting off the suction pressure from the suction port of the suction head can be facilitated.
Furthermore, by making the attraction force for adsorbing the label by the attraction head weaker than the attraction force of the label to be attached to the article, the label can be reliably attached to the article without weakening the attraction force of the attraction head.
[Brief description of the drawings]
FIG. 1 is a perspective view for explaining a main part of a sticking section of a label sticking apparatus according to an embodiment of the present invention.
FIG. 2 is an explanatory diagram for explaining an attaching operation of the label attaching device according to the embodiment of the present invention.
FIG. 3 is an explanatory diagram for explaining a groove portion of another suction head showing an embodiment of the present invention.
[Explanation of symbols]
L Label F Label front surface R Label back surface 1 Attachment section 10 Suction head 11 Suction surface 12 Suction port 13 Detection sensor 14 Groove section 15 Air nozzle 16 Elastic member 17 Press roller 18 Fixed plate 20 Incline section 21 Engaging section 22 Piston rod 23 For inclination Cylinder 24 Shaft 25 Support holder 30 Elevating part 31 Piston rod 32 Elevating cylinder C Conveyor W Article 40 Suction head 41 Suction surface 42 Suction port 43 Detection sensor 44 Groove

Claims (4)

In a label sticking apparatus having a suction head for sucking a label by a plurality of suction ports and sticking the label to an article,
A label sticking device, wherein a groove is provided on a suction surface of the suction head. 2. The label sticking apparatus according to claim 1, wherein one or a plurality of grooves are provided on a suction surface of the suction head in a direction along a conveying direction of the article or in a direction perpendicular to the conveying direction of the article. . The suction head includes a roller unit that abuts and presses the label on the article,
3. The label sticking apparatus according to claim 1, further comprising a tilting unit that tilts the suction head downstream in the transport direction. The label sticking apparatus according to claim 1, 2 or 3, wherein a suction force for sucking the label by the suction head is made weaker than a sticking force of the label to be stuck to the article.

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