JP2005022658A - Label attaching apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a label attaching apparatus which improves accuracy in attaching a label. <P>SOLUTION: The label attaching apparatus comprises a suction head 12 having a suction surface 15 onto which the label is sucked. The label is blown off toward an article to be labelled to be attached on the article. The suction head 12 has a hollow part 13 in which a recess 20 is formed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a label affixing device, and more particularly to a label head affixing device that affixes a label to an adherend by blowing air with air.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a label sticking device for sticking a label to an adherend that is transported by a transport means such as a conveyor, there is a label sticking device that causes a label to fly toward the adherend to be stuck.
For example, after printing on the printing surface of the label with a label printer, the label sticking device is made to peel the label from the mount with a peeling plate, and temporarily hold the peeled label with a suction head arranged in the label sticking device. Yes.
[0003]
FIG. 6 is a cross-sectional view illustrating a suction head of a conventional label sticking apparatus.
The suction head 30 disposed in the label sticking device 5 includes a suction head main body 30a and a suction plate 30b. The suction head main body 30a forms a hollow portion 13 having a hollow inside, and a plurality of holes 18 communicating with the hollow portion 13 are formed in the suction plate 30b.
Further, a hose 16 for supplying positive or negative pressure of air is connected to a joint 17, and this joint 17 is provided at a substantially central portion on the side of the symmetry plane where the suction plate 30b is disposed. A communication hole 19 that communicates in a substantially circular shape that connects the hollow portion 13 and the joint 17 is formed.
[0004]
In the suction head 30 configured in this manner, a label (not shown) is fed out from the left side in the drawing and a negative pressure is generated in the hollow portion 13, so that a suction force is applied to the plurality of hole portions 18. The label is fed out while adsorbing the label (not shown).
In addition, when a label is affixed to an adherend (not shown), it is switched from negative pressure to positive pressure by a solenoid valve (not shown), and air blows out from each hole 18 toward the label. The label is skipped toward the body and the label is attached to the adherend. (For example, Patent Document 1)
[0005]
[Patent Document 1]
JP 2002-46723 A
[Problems to be solved by the invention]
However, when the label adsorbed by the adsorption head is blown toward the adherend, the timing of blowing air from each hole of the adsorption head is early when the hole close to the communication hole provided with the joint, Also, the farther from the communication hole, the later the timing of the air blowing, the more the label will fly unstably. .
[0007]
In addition, there is a problem that when the label flies without being stabilized, when the label sticks to the adherend, air enters the inside of the label and a part of the label sticks incompletely or wrinkles occur. .
[0008]
The present invention has been considered in view of the above problems, and an object of the present invention is to provide a label sticking device that can improve the precision of a sticking position so as to stick a label to a predetermined sticking position of an adherend.
[0009]
It is another object of the present invention to provide a label sticking device that prevents air from entering the inside of the label and attaches the label to prevent wrinkles.
[0010]
[Means for Solving the Problems]
Since the present invention focuses on the timing of blowing air to the label, a suction part having a suction surface for sucking the label and a plurality of holes communicating with the hollow part are formed on the suction surface. In the label sticking apparatus for sticking the label to the adherend, the sticking head for sticking the label to the adherend by blowing the label toward the adherend by blowing air and sucking and holding the formed and fed label on the suction surface Is characterized in that a communication hole for supplying air to the hollow portion is formed, and a hollow portion is formed at a position facing the communication hole.
[0011]
In the label sticking device, the recess is formed on the bottom surface in the hollow portion.
[0012]
In the label sticking device, the recess has a circular shape.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the part same as the past, and description is abbreviate | omitted.
FIG. 1 is a schematic configuration diagram of an entire label sticking apparatus including a label printer, FIG. 2 is a cross-sectional view illustrating a suction head of the label sticking apparatus, and FIG. 3 is a perspective view from the suction face side of the suction plate. 4 is a cross-sectional view for explaining the flow of air in the suction head, and FIG. 5 is a plan view showing a part of the label continuum.
[0014]
The label sticking device 5 includes a label printer 1 that feeds a label 27 onto a suction surface 15 of a suction head 12 to be described later, and is disposed on the side of a conveying means of a conveyor 24 that conveys an adherend 23.
The label continuum 25 loaded in the label printer 1 is temporarily attached to a strip-like mount 26 (hereinafter referred to as “mount” as appropriate) so that a plurality of labels 27 can be peeled at predetermined intervals. Each label 27 is coated with a pressure-sensitive adhesive on one surface, and the surface coated with the pressure-sensitive adhesive is temporarily attached to a surface on which a strip-like mount 26 is coated with a release agent such as silicone. (See Figure 5)
Further, the other surface of the label 27 has a printing surface and has a thermosensitive coloring layer that develops color when heated.
[0015]
The label printer 1 includes a paper supply unit 2, a printing unit 3, a peeling unit 4, and a mount winding unit 6.
The paper supply unit 2 is provided with a supply shaft 7 that rotatably holds a roll-shaped continuous label body 25, and is fed out toward the printing unit 3.
The printing unit 3 includes a thermal head 8 and a platen roller 9, and the thermal head 8 is provided so as to be able to contact with and separate from the platen roller 9.
Further, the platen roller 9 is provided so as to be driven in forward and reverse rotation by driving a stepping motor (not shown).
In addition, while the label continuous body 25 is nipped and transported by the thermal head 8 and the platen roller 9, the heat generation is performed by applying selective heat generation from a heating element (not shown) of the thermal head 8 to the printing surface of the label 27. Thus, desired printing such as characters and barcodes can be performed.
[0016]
The peeling unit 4 is provided with a peeling plate 10 for turning the mount 26 at an acute angle, the label 27 printed by the printing unit 3 is turned at the tip of the peeling plate 10, and the rigidity of the label 27 is changed from the mount 26. The label 27 is peeled off.
The peeled label 27 is fed to the suction surface 15 of the suction head 12 of the label sticking device 5 to be described later, and the mount 26 turned at the tip of the release plate 10 is transferred to the mount take-up unit 6.
The mount take-up unit 6 has a take-up shaft 11 for taking up the mount 26 and rotationally drives the take-up shaft 11 by a stepping motor (not shown) or the like, whereby the label 27 is peeled off. The peeled backing sheet 26 is wound up.
[0017]
The label sticking device 5 is mainly provided with a suction head 12.
The suction head 12 is provided with a support member (not shown), and is arranged at a position where the label 27 peeled from the peeling plate 10 can be sucked to the suction surface 15 of the suction head 12.
The suction head 12 includes a suction head main body 12 a and a suction plate 12 b having a suction surface 15, and a hollow portion 13 is formed in the suction head 12. The suction surface 15 is provided on the lower surface side of the suction head 12. (See Figure 1)
Further, the suction plate 12b is formed with a plurality of holes 18 communicating with the suction surface 15 and the hollow portion 13, so that the label 27 can be sucked (negative pressure) and sprayed (positive pressure) by air described later. 15.
[0018]
A communication hole 19 that communicates with the hose 16 via a joint 17 is formed in the top plate 14 on the symmetry plane side where the suction plate 12 a of the suction head 12 is provided. The hose 16 is connected via an electromagnetic valve D to an air source E that sends compressed air.
In addition, the communication hole 19 is formed in the top plate 14 at the substantially central portion of the hollow portion forming a substantially rectangular parallelepiped, and the communication hole 19 has a substantially circular shape, and the diameter A of the communication hole 19 on the hollow portion side. have.
The electromagnetic valve D switches the air so that air from the air source E is sent (positive pressure) or sucked (negative pressure) to the suction head 12 via the hose 16.
[0019]
A depression 20 is formed in the suction plate 12b on the bottom surface side of the hollow portion 13, and is formed at a position facing the communication hole 19 formed in the top plate 14. Moreover, the hollow part 20 forms the side wall cut in the substantially perpendicular | vertical shape.
The hollow portion 20 has a substantially circular shape, and has a diameter B of the hollow portion 20 which is the diameter thereof. The diameter A of the communication hole 19 and the diameter B of the hollow portion 20 are equal to each other or A <B. Have the relationship.
In the present embodiment, the diameter A of the communication hole 19 is A = 8 mm, and the diameter B of the recess 20 is 12 mm.
Further, when the depth C1 of the recess 20 is the thickness C2 of the suction plate 12b,
C1 is ½ C2 or more and 2/3 C2 or less.
In addition, it is desirable that the center of the diameter of the communication hole 19 and the center of the diameter of the recessed portion 20 are in a straight line. Further, the side wall 21 has such a depth that the air from the communication hole 19 is blown to the recess 20 and the air rises. A preferable thickness of the suction plate 12b is 5 mm.
[0020]
With such a structure of the suction head 12, when a positive pressure of air is generated from the communication hole 19 to the hollow portion 13 through the hose 16, the air blown from the communication hole 19 is directly blown to the hollow portion 20.
The air blown to the dent 20 rises along the side wall 21 of the dent 20 and hits the top plate 14, and flows into each hole 18. It will blow out evenly. Therefore, the label 27 adsorbed by the suction of the air to the suction plate 12b can be very straightly blown by substantially uniform air blowing. (See Figure 4)
[0021]
Operation | movement of the label sticking apparatus 5 provided with the label printer 1 comprised in this way is demonstrated.
The label continuum 25 fed from the supply shaft 7 is transferred to the printing unit 3 via the paper sensor 21 and the guide roller 22.
In the paper sensor 21, a transmission type sensor is arranged in the transfer path of the label continuum 25 so as to detect the transmission amount of the part 26 of the label continuum 25 and the part where the base 26 and the label 27 overlap. Yes, based on the detected transmission amount, control is performed by sending a signal to a control unit (not shown) so that the printing start reference position for printing on the label 27 and the leading edge of the label 27 are stopped at the leading edge position of the peeling plate 10. It is like that.
Note that a detection mark (not shown) may be printed on the opposite surface of the mount 26 on which the label 27 is temporarily attached, and a reflective sensor may be disposed as a paper sensor.
[0022]
The label continuum 25 transferred to the printing unit 3 performs desired printing on the label 27, the printed label 27 is transferred to the peeling unit 4, and the mount 26 is turned by the peeling plate 10, and the label 27 is moved forward. It is drawn out and held by suction on the suction surface 15 of the suction head 12. At this time, control is performed so that the tip of the label 27 next to the printed label 27 stops at the tip of the peeling plate 10.
Further, since air flows from the hollow portion 13 toward the hose 16, air suction action (negative pressure) is generated in each hole portion 18 of the suction plate 12 b, so that the printing surface of the label 27 is printed. Can be adsorbed on the adsorption surface 12b.
[0023]
Next, when the adherend 23 is conveyed to the application position by the conveyor 24, an object detection sensor (not shown) detects the adherend 23 and sends a signal to a control unit (not shown).
Based on this signal, the electromagnetic valve D is switched, and the air flow is switched from negative pressure to blowing (positive pressure). As a result, air is blown out from each hole 18 of the suction plate 12b, the label 27 is blown straight toward the adherend 23 (in the direction of arrow F), and the label 27 is stuck at the sticking position of the adherend 23. .
The object detection sensor is provided with a transmission sensor on the side edge of the conveyor 24 so that a signal is transmitted when the adherend 23 passes the object detection sensor.
[0024]
Thus, when the air is switched from negative pressure to blowing (positive pressure), the air is sent out from the communication hole 19 toward the hollow portion 13 of the hollow portion 13. The air is once blown to the recessed portion 20, and the air that has risen flows into each hole 18 through the top plate 14, so that the air is blown almost uniformly from each hole 18 to the label 27. Since air is blown onto the label 27 substantially uniformly, the label 27 can be stably blown straight.
Therefore, the label 27 can be attached to the attaching position of the label 27 of the adherend 23 with high accuracy and can be attached neatly.
[0025]
Although the label sticking device of the present invention has been described as a label sticking device provided with a label printer, the label printer may be provided as necessary.
Moreover, although the example of the label continuous body in which the label is temporarily attached to the mount has been described, it may be a strip-shaped label without the mount, and in this case, a cutting part is provided instead of the peeling part, and if necessary A feed roller may be provided between the cutting part and the adsorbent.
[0026]
Although the hollow part demonstrated by this Embodiment demonstrated in the example formed in the substantially circular shape, elliptical shape may be sufficient and it can change variously. Further, the example in which the side wall is cut and formed in a vertical shape has been described, but the side wall may be formed to be inclined.
Moreover, although the example which affixes a label on the upper surface of a to-be-adhered body demonstrated, it is applicable even when a label is affixed on the side surface or bottom face of a to-be-adhered body.
Furthermore, although the suction head has been described as an example of the suction head main body and the suction plate, a suction head in which the suction head main body and the suction plate are integrally formed may be used.
[0027]
【The invention's effect】
As described above in detail, according to the present invention, the label can be skipped very straight, and the accuracy of the attaching position of the adherend can be improved.
In addition, air can be prevented from entering the inside of the label to prevent wrinkles and the label can be affixed neatly.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an entire label sticking apparatus including a label printer according to the present invention.
FIG. 2 is a cross-sectional view illustrating a suction head of the label sticking device.
FIG. 3 is a perspective view from the suction surface side of the suction plate.
FIG. 4 is a cross-sectional view illustrating the air flow of the suction head.
FIG. 5 is a plan view showing a part of a label continuum.
FIG. 6 is a cross-sectional view illustrating an adsorbent of a conventional label sticking device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Label printer 2 Paper supply part 3 Printing part 4 Peeling part 5 Label sticking apparatus 10 Peeling plate 12 Adsorption head (this invention)
12a Suction head main body 12b Suction plate 13 Hollow portion 14 Top plate 15 Suction surface 18 Hole portion 19 Communication hole 20 Recessed portion 21 Side wall 23 Adhered body 25 Label continuous body 26 Band-shaped mount 27 Label 30 Suction head (conventional)
A Diameter of communication hole B Diameter of recess D Electromagnetic valve E Air source

Claims (3)

A suction head having a suction surface for sucking a label and a plurality of holes communicating with the hollow portion are formed in the suction surface, and a fed label is sucked and held on the suction surface. In the label affixing device for flying the label toward the adherend by blowing air and attaching the label to the adherend,
The adhering head is provided with a communication hole for supplying air to the hollow portion, and a depression is formed at a position facing the communication hole. The label attaching device according to claim 1, wherein the hollow portion is formed on a bottom surface in the hollow portion. The label attaching device according to claim 1, wherein the hollow portion has a circular shape.

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