JP2002046723A - Label adhering device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an accuracy in a label adhering position at a label adhering device. SOLUTION: This invention relates to a label adhering device having many nozzles 31a for sucking the upper surface of a label with a negative pressure and blowing compressed air against the sucked label so as to blow off the adsorbed label and adhere it to a lower commodity. A nozzle selecting plate 30 is arranged at either an upstream side or a downstream side of the nozzle 31a in such a way that it can be replaced. This invention is characterized in that the nozzle selecting plate 30 closes a certain nozzle 31a of the aforesaid many nozzles 31a and then releases the remaining nozzles 31a through a predetermined through-pass hole 30a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a labeling apparatus, and more particularly to a labeling head.

[0002]

2. Description of the Related Art Labels are attached to products wrapped in so-called stretch films. In many cases, such labels are issued from a label issuing unit and automatically attached by an attaching device. As such a label sticking device,
A suction spray type and a press type are known. The former suction spray type suctions the upper surface of the label by negative pressure,
The label is adhered by blowing compressed air to the adsorbed label and blowing it toward a commodity below (for example, see Japanese Patent Application Laid-Open No.
No. 4635). In the latter pressing type, the label is stuck by lowering the sticking head that has absorbed the upper surface of the label to the surface of the product and pressing the label onto the product (Japanese Patent Application Laid-Open No.
24052).

[0003]

In the suction spraying type, since the adsorbed label is blown off by compressed air, the accuracy of the sticking position is lower than that of the pressing type. The accuracy is further reduced.

That is, when the size or the shape of the label changes, the label is blown to the side by air blown out from the outlet that does not adsorb the label, or
Decreases the accuracy of the attachment position. Note that Japanese Patent Application Laid-Open No. 5-463
No. 5 discloses a structure in which the position of the blowing nozzle can be changed by sliding, but in this structure, X-
The position of the blowing nozzle can be changed only in one of the Y directions, and therefore, the accuracy of the sticking position cannot be improved.

[0005] Immediately before adsorbing a label,
The end of the label sticks to the peeling bar of the label. When the label is blown off, the sticking causes the posture of the label to be disturbed, so that the accuracy of the sticking position is reduced.

[0006] Accordingly, a main object of the present invention is to improve the accuracy of a label sticking position in a label sticking apparatus.

[0007]

In order to achieve the above object, the label sticking apparatus of the first invention has a number of nozzles for sucking the upper surface of the label by negative pressure and blowing compressed air to the sucked label. In the label sticking apparatus that blows off the adsorbed label and sticks it to a product below, a nozzle selection plate is replaceably provided at an upstream end or a downstream end of the nozzle, and the nozzle selection plate is one of the plurality of nozzles. It is characterized in that the nozzles of the section are closed and the remaining nozzles are opened through predetermined through holes.

In the first aspect of the present invention, when the size or shape of the label to be attached is changed, the label is replaced with a nozzle selection plate having a through hole having the size and shape of the label. Therefore, since air can be blown from the nozzle according to labels of various sizes and shapes,
There is no possibility that air will blow out from the outlet that does not adsorb the label.

On the other hand, the label sticking apparatus of the second invention has a sticking head for sucking the upper surface of the label being issued from the label issuing section by negative pressure and blowing compressed air to the sucked label, and In a label sticking apparatus for sticking a label, a transfer means for transferring the label in a label issuing direction from the label issuing unit is provided in the sticking head.

In the second aspect of the present invention, when the label is issued, the transfer means slightly transfers the label from the label issuing section in the label issuing direction while the sticking head draws the label upward. As a result, the rear end of the label stuck to the peeling bar is separated from the peeling bar.

The scope of the first and second inventions is limited to a label sticking and spraying type label sticking apparatus, but the idea of the present invention can be applied to a pressing type.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. 1 to 5 show a first embodiment. As shown in FIG. 1, a label application device (label printer) 5 that issues a label L according to the content of the product M is disposed above the transport path of the packed product M. Has been established. The label issuing unit 5 issues labels L having various sizes and shapes as shown in FIGS. 5B, 5D, and 5F, for example. It should be noted that information on the product such as the name and price of the product is printed on these labels.

Label issuing section: As shown in FIG. 1, the label issuing section 5 has a printing unit 50 including a print head. The printing unit 50 performs printing on the label L on the surface of the printing roller 51 below. A crescent-shaped peeling shaft 52 is provided in front of the printing roller 51. The label L is peeled off from the base B by the peeling shaft 52 and is supplied below the bonding head 1.

The label sticking apparatus shown in FIG. 1 has an air source E, a pipe 10 and the sticking head 1,
The sticking head 1 is provided downstream of the label issuing unit 5 in the flow direction of the product M. As will be described later, the label sticking device sticks the upper surface of the label L issued from the label issuing unit 5 with the sticking head 1 and then blows off the sucked label L at a predetermined timing to stick the label L to the commodity M below. I do.

Configuration of Labeling Apparatus: Next, the configuration of the present labeling apparatus will be described. The pipe 10 is
One end is an air source E for sending and sucking compressed air.
It is connected to the. As shown in FIG. 2, the attaching head 1 has a fixing part 2 to which the other end of the pipe 10 is fixed, a nozzle selection plate 30 and a nozzle block 31.

The fixing portion 2 is composed of an air supply block 20, a dispersion plate 21, a chamber block 22, and a pressing plate 23 in this order from the top, and they are fastened to each other using block assembly screws 24. The nozzle block 31 includes:
3 through a support fitting 11 fixed to the fixing portion 2.
As shown in FIG. The nozzle block 31 is fixed to the fixed part 2 by the rotary shaft 15 and the fixing tools (patch locks) 12 and 13 when in use, while fixing the fixing tools 12 and 13 when replacing the nozzle selection plate 30. By releasing, the open state shown by the two-dot chain line can be obtained.

The nozzle selection plate 30 is interposed between the fixing portion 2 and the nozzle block 31 and is fixed to the chamber block 22 by a selection plate fixing screw 32. The nozzle selection plate 30 can be replaced by opening the nozzle block 31 and then removing the selection plate fixing screw 32.

Next, the flow path of the air A in the label sticking apparatus will be described in order from the upper part to the lower part. The pipe 10 is provided with an air supply block 20.
Is communicated with the air passage 20a. The air passage 20a is formed to extend downward in a mortar shape.
As shown in FIG. 4A, a round head screw 21b is screwed around the center of the dispersion plate 21, and the round head screw 21b
Are provided with a plurality of first dispersion holes 21a.
The first dispersion hole 21a is provided inside the outer periphery of the lower end of the air passage 20a. A chamber 22a is provided in the chamber block 22 shown in FIG. As shown in FIG. 4B, the holding plate 23 is provided with a plurality of second dispersion holes 23a.

The nozzle selection plate 30 is shown in FIG.
It is made of a rubber plate as shown in (c) and (e), and a plurality of types are prepared in advance, or prepared as needed each time.
Each nozzle selection plate 30 is formed with a through hole 30a having a size and shape corresponding to the label L to be stuck. As shown in FIG. 4C, the nozzle block 31
Is provided with a large number of nozzles 31a. The nozzle selection plate 30 closes some of the nozzles 31a among the nozzles 31a, and opens the remaining nozzles 31a toward the chamber 22a through the through holes 30a.

Next, the flow of air will be described. When sucking the label, when the air source E shown in FIG.
Is introduced into the chamber 22a through the second dispersion hole 23a through the nozzle 31a opened through the through hole 30a, and is then sucked from the pipe 10 through the first dispersion hole 21a and the air passage 20a. Thereby, the nozzle 31
A negative pressure is generated below “a”, and the label L can be attracted to the nozzle block 31. When applying the label, the air source E is connected to the air passage 20 through the pipe 10.
The air A introduced into a is dispersed by the head of the round head screw 21b and the first dispersion hole 21a, and then introduced into the chamber 22a to expand. The chamber 22a
The air A introduced into the inside passes through the second dispersion hole 23a and is sent out only from the nozzle 31a opened through the through hole 30a. Thus, the sucked label L is blown downward.

As shown in FIG. 2, the first dispersion holes 21a, the second dispersion holes 23a, and the nozzles 31a are arranged so that the wind pressure when blowing compressed air is uniform. The size is smaller in the order of the two dispersion holes 23a and the nozzle block 31, and the number is larger.

Replacement method: First, prior to attaching the label L, the nozzle selection plate 30 is replaced and attached according to the label L to be issued. After the fixing by the fixtures 12 and 13 shown in FIG. 3 is released and the nozzle block 31 is opened as shown by a two-dot chain line, the selection plate fixing screw 32 is removed and the nozzle selection plate 30 is removed. After the removal, the nozzle selection plate 30 corresponding to the label L to be issued is replaced with the selection plate fixing screw 3.
2 and is fixed to the lower part of the holding plate 23. After that, the nozzle block 31 is fixed using the fixtures 12 and 13.

Sticking operation: When the air source E starts sucking, the nozzle 31a passes through the aforementioned through hole 30a and the like.
The air A below is sucked. A label L is issued from the label issuing unit 5 shown in FIG.
When the label L is supplied below, the upper surface of the label L is suction-held on the lower surface of the nozzle block 31 by the suction force.

After the suction, when the commodity M is transported to a predetermined position, the air source E starts to send out the air A. The air A passes through the above-described through hole 30a and the like,
The label L blown out from a and sucked and held on the lower surface of the nozzle block 31 is blown off toward the commodity M below.

In the above configuration, the nozzle selection plate 30 shown in FIG. 3 is adjusted to the shape and size of the label L, so that the nozzle selection plate 30
Is attached, the air A from the nozzle 31a can be blown only to the portion of the label L and blown downward. That is, the air A does not blow out from the portion without the label L. Therefore, it is possible to prevent the label L from being blown to the side, and the accuracy of the position where the label L is attached is significantly improved. Further, since there is no need to provide a mechanism for sliding the position of the nozzle, the attaching head becomes compact.

Further, since the nozzle selection plate 30 has a very simple structure in which only a hole is formed in the rubber plate, the nozzle selection plate 30 can be easily prepared by the user using the label sticking apparatus, and can be stored and managed. Extremely easy.

Further, since the dispersing plate 21 is provided, the pressure of the air A introduced from the chamber 22a to the nozzle 31a becomes uniform, so that the pressure of the air A is evenly applied to the entire label L. Is further improved. Further, since the nozzle block 31 is set to be detachable, sanitary properties can be improved by removing and washing the nozzle block 31.

Next, a second embodiment will be described.
FIG. 6A shows the second embodiment. As shown in FIG. 6A, an impeller 34 and a feed roller (transfer means) 35 are provided in the attaching head 1A. The impeller 3
4 is provided in the air flow path, while the attaching head 1
A suction hole 36 communicating with the air flow path is formed on the side of the label printer 5 on the side of the label printer 5. The impeller 34 and the feed roller 35 are linked to each other by a transmission member such as a gear (not shown). Other configurations are the first
This is the same as the embodiment, and the same or corresponding portions are denoted by the same reference characters, and detailed description and illustration thereof will be omitted.

When sucking the label L, when the air source starts sucking the air A, the air A below the nozzle block 31 is sucked and the air A is sucked from the suction hole 36. The impeller 34 is rotated by the air A sucked from the suction hole 36, and the feed roller 35 is driven to rotate clockwise through the transmission member. When the label L is issued, the nozzle block 31 draws the label L upward, and the feed roller 35
Is slightly transported in the label X issuing direction X.

As described above, the label L issued from the label issuing unit 5 is transported in the label issuing direction X by the feed roller 35 of the sticking head 1, so that the peeling shaft 5 of the label issuing unit 5 is moved.
2, the rear end of the label L can be separated. Therefore, the label L is blown downward in a horizontal posture without sticking to the peeling shaft 52.
The accuracy of the attachment position is improved and stabilized. Further, since the feed roller 35 is rotated by the flow of the air A from the air source E via the impeller 34, the structure of the apparatus is not so complicated.

In addition, an impeller is provided coaxially with the feed roller 35, and an air supply blowout nozzle is separately provided below the peeling shaft 52. When the label L is attracted, air is blown from the air blowout nozzle. , The feed roller 35 may be rotated.

FIG. 6B shows a third embodiment. FIG.
As shown in (b), the attaching head 1B has a nozzle block (transfer means) 31A movably provided with respect to the attaching head 1B main body. The nozzle block 3
1A includes, for example, the driving device 38 and the parallel movement mechanism 3
7 is provided so as to be movable obliquely downward in the issuing direction X of the label L. When the label L is issued, the nozzle block 31A draws the label L upward, then moves slightly in the label L issuing direction X, and moves from the label printer 5 obliquely downward in the label L issuing direction X. Is transported slightly. The attaching head 1B and the nozzle block 31
The gap with A and the moving distance of the nozzle block 31A are:
It is shown large for ease of explanation.

As described above, the preferred embodiments have been described with reference to the drawings. However, those skilled in the art can easily envisage various changes and modifications within the obvious scope by referring to the present specification. Would. For example, a nozzle selection plate may be provided at the lower end of the nozzle. The nozzle selection plate may be a metal plate or a resin plate other than the rubber plate. Further, the nozzle selection plate can be formed of a thick plate. Further, it is not necessary to fix the nozzle selection plate with the screw 32. In this case, a guide for positioning the nozzle selection plate is provided in the nozzle block,
The periphery of the nozzle selection plate may be positioned by this guide. Alternatively, a screw with a hexagonal hole may be screwed into the nozzle block from above, and a positioning hole corresponding to the head of the screw may be formed in the holding plate 23 and the nozzle selection plate to position the nozzle selection plate. Alternatively, the label may be blown off by blowing compressed air from an air source, and the label may be sucked by the suction force of a fan provided in the sticking head. Further, the sticking head may be formed of a porous material. Accordingly, such changes and modifications are to be construed as being within the scope of the invention as defined by the appended claims.

[0034]

As described above, according to the first aspect of the present invention, by appropriately replacing the nozzle selection plate, for labels having any shape and size, air can be blown from the nozzles only to the label portions. Can be blown downward, and air can be prevented from being blown out from a part without a label. Therefore, the accuracy of the label affixing position is significantly improved and stabilized. Further, since the nozzle selection plate has an extremely simple structure in which only a hole is formed in the plate, the nozzle selection plate can be easily prepared by the user using the label sticking apparatus, and storage and management are extremely easy.

Furthermore, if the pressure of the air introduced from the chamber to the nozzle is made uniform by providing a dispersion plate, the pressure of the air is evenly applied to the entire label, so that the accuracy of the sticking position is further improved.

If the nozzle is formed in a replaceable nozzle block, the dirt on the nozzle can be easily cleaned, and the sanitary property can be improved.

On the other hand, according to the second aspect of the present invention, since the label issued from the label issuing section is transported in the label issuing direction by the transporting means of the sticking head, the rear end of the label can be separated from the label peeling rod. it can. Therefore, the label is blown downward in a horizontal posture, so that the accuracy of the label attaching position is improved and the label is stabilized.

If the transfer means is formed by a roller and the roller is rotated by the flow of air from an air source for adsorbing the label, the structure of the apparatus does not become much more complicated.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing a label sticking apparatus according to a first embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a sticking head of the label sticking apparatus.

FIG. 3 is a longitudinal sectional view showing the pasting head.

FIG. 4 is a plan view showing a dispersion plate, a holding plate, and a nozzle block.

FIG. 5 is a plan view showing a nozzle selection plate and a label.

FIG. 6A is a schematic side sectional view showing a sticking head of a label sticking apparatus according to a second embodiment of the present invention, and FIG. 6B is a schematic side sectional view showing a sticking head according to the third embodiment; is there.

[Explanation of symbols]

 1, 1A, 1B: Pasting head 21: Dispersion plate 22: Chamber block 22a: Chamber 30: Nozzle selection plate 30a: Through hole 31: Nozzle block 31a: Nozzle 31A: Nozzle block (transfer means) 35: Feed roller (Transfer means) ) A: Air E: Air source L: Label M: Product

Claims (7)

[Claims] 1. A label sticking apparatus having a number of nozzles for sucking the upper surface of a label by a negative pressure and blowing compressed air to the sucked label, wherein the label is blown off and stuck to a product below. A nozzle selection plate is replaceably provided at an upstream end or a downstream end, and the nozzle selection plate closes some of the multiple nozzles and opens the remaining nozzles through predetermined through holes. The formed label sticking device. 2. A label sticking apparatus for sucking the upper surface of a label by a negative pressure and blowing compressed air to the sucked label to stick the label to a product below, wherein a number of nozzles for sucking the label communicate with the nozzles. A nozzle selection plate is exchangeably interposed between the nozzles, and the nozzle selection plate closes some of the plurality of nozzles and connects the remaining nozzles to the chamber through predetermined through holes. Labeling device formed to open toward 3. A label sticking apparatus for sucking the upper surface of a label by a negative pressure and blowing compressed air on the sucked label to stick the label to a lower product, wherein a nozzle block having a number of nozzles for sucking the label is formed. A chamber block that forms a chamber communicating with the nozzle; a chamber block that is exchangeably inserted between the two blocks to close a part of the plurality of nozzles and to pass through a predetermined through-hole. And a nozzle selection plate for opening the remaining nozzles toward the chamber. 4. The label sticking according to claim 2, wherein a dispersion plate for dispersing compressed air introduced into the chamber from an air source and introducing the compressed air into the chamber is provided at an upper end of the chamber. apparatus. 5. A label sticking apparatus, comprising: a sticking head for sucking the upper surface of a label being issued from a label issuing unit by negative pressure and blowing compressed air to the sucked label, and sticking a label to a product below. A label sticking apparatus, wherein a transfer unit for transferring the label in a label issuing direction from a label issuing unit is provided in the sticking head. 6. The label sticking apparatus according to claim 5, wherein said transfer means is constituted by a feed roller. 7. The label sticking apparatus according to claim 6, wherein the feed roller is driven to rotate by an air flow from an air source that sucks the label.