JP4445208B2 - Label peeling device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a label peeling apparatus for peeling a label affixed to a sheet from the sheet.
[0002]
[Prior art]
Conventionally, a label that can be peeled off is affixed to a sheet of paper or the like on which confidential information is written, thereby ensuring that the information is not visible from the outside while ensuring the confidentiality of the information. A technique for transmitting the information to the information transmission destination by peeling the label from the sheet at the transmission destination is used.
[0003]
In such a technique, for example, after confidential information such as an account number or a personal identification number is written on a postcard, a label as described above is attached to the area where this information is written, and the information is sent to a predetermined destination. Used in cases. In this case, when the label is attached to the postcard, the information described in the area where the label is attached is not visible from the outside, thereby ensuring the confidentiality of the information. Thereafter, when the label is peeled off from the postcard at the postcard destination, the information described in the area where the label is attached becomes visible and the information is transmitted to the postcard destination.
[0004]
Here, in the postcard destination, it is necessary to peel off the label from the postcard in order to make it possible to visually recognize the information described in the area where the label is affixed, but this is done manually. It is common.
[0005]
However, when the labels are manually peeled off from the postcard, when the number of postcards increases, the work becomes complicated accordingly. Depending on the number of postcards, the work time becomes enormous.
[0006]
Therefore, a technique has been considered in which heat is applied to the postcard with the label as described above attached to the postcard, whereby the label is easily peeled off from the postcard by reducing or eliminating the adhesive strength of the label ( For example, see Patent Documents 1 and 2.)
[0007]
Also, a method is used in which a roll or block coated with an adhesive material is brought into contact with the label, whereby the label is attached to the roll or block side and the label is peeled off from the postcard.
[0008]
In addition, a method is used in which a tip of the label is picked using a clamp having a small nail, and thereby the label is peeled off from the postcard.
[0009]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-95096 [Patent Document 2]
Japanese Patent Laid-Open No. 7-325544
[Problems to be solved by the invention]
However, the conventional techniques as described above have the following problems.
[0011]
(1) When the label is attached to the postcard, heat is applied to the postcard so that the label can be easily removed from the postcard by weakening or eliminating the adhesive strength of the label. It is effective for labels whose strength is weakened or disappeared, but for other labels, the postcard cannot be easily peeled off even when applied.
[0012]
(2) A roll or block coated with an adhesive material is brought into contact with the label, whereby the label is affixed to the roll or block side and the label is peeled off from the postcard. When the adhesive strength of the adhesive material is weak, the label cannot be stably peeled off from the postcard. Moreover, it becomes necessary to manage the adhesive material applied to the rolls and blocks.
[0013]
(3) In the case where the end of the label is picked using a clamp having a small nail and the label is peeled off from the postcard, the label cannot be peeled off stably from the postcard when the label is thin. .
[0014]
The present invention has been made in view of the problems of the conventional techniques as described above, and the adhesive force is weakened by applying heat to a label attached to a sheet such as paper so as to be peelable. It aims at providing the label peeling apparatus which can peel from a sheet | seat at high speed stably without limiting to the label which turns or loses.
[0015]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides:
A label peeling device for peeling off a label affixed to a sheet from the sheet,
Sheet conveying means and label collecting means arranged opposite to each other;
A sheet supply means for supplying the sheet with the label affixed between a sheet conveying means and the label collection means in a direction in which the label faces the label collection means;
The sheet conveying means sucks the sheet supplied from the sheet supply means,
The label collecting means includes
In the state where the sheet supplied from the sheet supply means is being sucked by the sheet conveying means, the label is affixed to the sheet supply means at the leading end side in the sheet supply direction by sucking the label attached to the sheet. First peeling means for peeling in order from,
A second peeling means for recovering the label peeled from the sheet by the first peeling means;
The interval between the regions of the sheet conveying means and the label collecting means that are closest to each other is wider than the thickness of the sheet, and narrower than the sum of the thickness of the label and the thickness of the sheet,
The label collecting unit includes a pressure detection unit that detects a pressure in an area closest to the sheet conveyance unit, and the conveyance of the sheet in the sheet conveyance unit when the pressure is detected by the pressure detection unit. The label is sucked by the first peeling means while rotating in the direction.
[0016]
The second peeling means includes a suction source different from the first peeling means, and collects the label by sucking the label sucked by the first peeling means. Features.
[0018]
Further, the sheet conveying means has a curved shape such that the downstream side in the sheet conveying direction is away from the label collecting means relative to the region closest to the label collecting means.
[0019]
(Function)
In the present invention configured as described above, the sheet transporting means and the label collecting means are most preferably arranged so that the label-attached side is the label collecting means side so that the label-attached sheet is attached to the label collecting means side. When supplied to an adjacent area, the sheet is sucked by the sheet conveying means, and the label is sucked by the label collecting means. In the label collecting means, first, the first peeling means sucks the leading end portion in the transport direction of the label affixed to the sheet, and thereby peels off the leading end portion in the transport direction of the label affixed to the sheet. Thereafter, the sheet is sucked and conveyed by the sheet conveying means, and the label is peeled from the sheet by the second peeling means of the label collecting means and conveyed.
[0020]
In this way, in the first peeling means, after the leading end portion in the transport direction of the label affixed to the sheet is sucked, the leading end portion in the transport direction of the label is peeled from the sheet, and then, by the second peeling means, Since the label is peeled from the sheet, the label attached to the sheet is surely peeled from the sheet.
[0021]
As a result, labels that are attached to a sheet such as paper so that they can be peeled off are not limited to labels whose adhesive strength weakens or disappears by applying heat, but can be peeled off from the sheet stably at high speed. Can do.
[0022]
In the second peeling means, if the label is peeled from the sheet by sucking the label sucked by the first peeling means by a suction source different from the first peeling means, the first peeling means The label in which the leading end portion in the transport direction is peeled from the sheet can be reliably peeled from the sheet.
[0023]
In addition, the distance between the areas closest to each other between the sheet conveying means and the label collecting means is larger than the sheet thickness and smaller than the sum of the label thickness and the sheet thickness, and the label collecting means The pressure detecting means for detecting the pressure in the area closest to the sheet conveying means is provided, and when the pressure is detected by the pressure detecting means, the label collecting means rotates in the sheet conveying direction in the sheet conveying means, When the first peeling means sucks the label, when the area where the sheet label is affixed reaches the area where the sheet conveying means and the label collecting means are closest, the sheet and label The pressure is detected by the pressure detection unit depending on the thickness, the label collection unit rotates in the sheet conveyance direction, and the suction operation in the first peeling unit is performed. It becomes door.
[0024]
As a result, the rotation operation in the label collecting means and the suction operation in the first peeling means are performed only in the area where the sheet label is affixed, and the label collecting means in the area where the sheet label is not affixed. It is possible to prevent the sheet from being sucked.
[0025]
Further, if the sheet conveying means has a curved shape such that the downstream side in the sheet conveying direction is away from the label collecting means relative to the region closest to the label collecting means, the label is easily peeled from the sheet.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0027]
1A and 1B show an embodiment of a label peeling apparatus according to the present invention, in which FIG. 1A is a diagram showing a configuration, and FIG. 1B is a diagram of rollers 10a and 10b shown in FIG. is there.
[0028]
This embodiment, as shown in FIG. 1, disposed opposite to each other and having different diameters from each other, the roller 10c is a sheet feeding means for conveying the sheet 1 to rotate while sandwiching the sheet 1 to which the label 2 is attached , 10d and a roller 10a, which is a sheet conveying means that rotates while sucking the sheet 1 conveyed between the rollers 10c, 10d, and a label 2 that is provided opposite to the roller 10a and is affixed to the sheet 1 And a roller 10b which is a label collecting means for collecting the label by rotating in the conveying direction of the sheet 1 in the roller 10a, that is, rotating in the opposite direction to the roller 10a. The roller 10a and the roller 10b Is wider than the thickness of the sheet 1 in the region closest to each other, and the distance between the label 2 and the sheet 1 It is narrower than the sum of Sato. Further, the outer diameter of the roller 10c is larger than the outer diameter of the roller 10d.
[0029]
The roller 10a is provided with a plurality of holes 15a on the surface on which the sheet 1 is sucked, and further, the holes 15a are formed by a predetermined distance from the region facing the roller 10b toward the downstream side in the conveyance direction of the sheet 1. An air intake portion 11a for sucking air from the outside is provided, and an exhaust portion 12a for discharging air from the inside through the hole 15a is provided in other regions.
[0030]
The roller 10b is provided with a plurality of holes 15b on the surface to which the label 2 is sucked, and further, the sheet sucked by the roller 10a by sucking air from the outside of the roller 10b through the holes 15. A suction portion 13 as a first peeling means for peeling the front end portion of the label 2 affixed to 1 from the sheet 1, and a predetermined direction from the region where the intake portion 13 is provided toward the downstream of the label 2 in the transport direction. By sucking air from the outside of the roller 10b through the hole 15b by a suction source different from the suction part 13 by a distance, the label 2 having one end peeled from the sheet 1 at the suction part 13 is peeled off from the sheet 1. And an air exhaust part 12b for exhausting air from the inside through a hole 15b in the other region. Further, a pressure sensor 14 which is a pressure detection means for detecting a pressure on a surface where the label 2 is sucked in the area is provided in the area closest to the roller 10a.
[0031]
Below, operation | movement of the label peeling apparatus comprised as mentioned above is demonstrated.
[0032]
2 is a diagram illustrating a configuration of a sheet from which a label is peeled by the label peeling device illustrated in FIG. 1, and FIG. 3 is a diagram for explaining an operation of the label peeling device illustrated in FIG. It is.
[0033]
As shown in FIG. 2, the sheet 1 applied in this embodiment is configured by attaching a label 2 configured to be peelable to a part thereof.
[0034]
First, when the sheet 1 to which the label 2 is attached is supplied between the rollers 10c and 10d so that the surface to which the label 2 is attached is on the roller 10c side, the label 10 is rotated by the rotation of the rollers 10c and 10d. The sheet 1 with 2 attached is conveyed while being sandwiched between the rollers 10c and 10d. At this time, since the outer diameter of the roller 10c is larger than the outer diameter of the roller 10d, when the sheet 1 with the label 2 attached is sandwiched between the rollers 10c and 10d, the pressure is applied according to Hertz's law. However, it comes to bend to the side where the label 2 is not affixed (FIG. 3A).
[0035]
When the sheet 1 conveyed while being sandwiched between the roller 10c and the roller 10d is supplied to an area where the roller 10a and the roller 10b are closest to each other (FIG. 3B), the sheet 1 The air is sucked by the roller 10a through the hole 15a provided in the roller 10a by the suction operation, and is conveyed with the rotation of the roller 10a in this state. In this state, the intake operation in the intake portion 11a provided in the roller 10a is performed, but the intake operation in the intake portions 11b and 13 provided in the roller 10b is not performed. Further, the roller 10b is not rotating, and stops so that one row of the holes 15b provided in the roller 10b, which is perpendicular to the rotation direction of the roller 10b, is arranged on the intake portion 13. Yes.
[0036]
When the sheet 1 is sucked and conveyed by the roller 10a and the area where the label 2 is attached reaches the area where the roller 10a and the roller 10b are closest to each other (FIG. 3C), the sheet 1 is provided on the roller 10b. The pressure sensor 14 detects the pressing by the label 2. Here, the distance between the roller 10a and the roller 10b is wider than the thickness of the sheet 1 and narrower than the sum of the thickness of the label 2 and the thickness of the sheet 1 in the region closest to each other. When only the sheet 1 is interposed between the roller 10a and the roller 10b, no pressure is detected by the pressure sensor 14, and when the sheet 1 and the label 2 are interposed between the roller 10a and the roller 10b. The pressure is detected by the pressure sensor 14. Therefore, when the area where the label 2 is attached reaches the area where the roller 10a and the roller 10b are closest to each other, the pressure sensor 14 provided on the roller 10b detects the pressure applied by the label 2.
[0037]
When the pressure sensor 14 detects the pressing by the label 2, the roller 10b starts to rotate at the same speed as the roller 10a, and the intake operation in the intake portions 11b and 13 is performed. The label 2 is sucked by the roller 10b through the hole 15a provided on the roller 10b and installed on the suction portion 13 in the stop state of the roller 10b by the suction operation, and thereby the label stuck on the sheet 1 2 is peeled off from the sheet 1 in the conveyance direction. Thereafter, the label 2 from which the leading end in the conveyance direction is peeled off from the sheet 1 by the suction operation in the suction unit 13 is sucked by the roller 10b through the hole 15a provided in the roller 10b by the suction operation in the suction unit 11b. Thus, the label 2 attached to the sheet 1 is peeled from the sheet 1 (FIG. 3D). At this time, since the sheet 1 is already curved by being sandwiched between the roller 10c and the roller 10d, the label 2 is easily peeled from the sheet 1.
[0038]
Here, the air intake unit 13 is provided so as to suck air from the outside through the hole 15b in an area where the roller 10b and the roller 10a are closest to each other by an air intake source different from the air intake unit 11b. If the width w of the intake portion 13 in the transport direction of the label 2 is configured to be narrower than the pitch t of the holes 15b, the intake portion 13 sucks air from the outside only through one row of holes 15b. Therefore, when the holes 15b in one row are blocked by the label 2, all the suction force by the air intake portion 13 is applied to the holes 15b in the row, so that the label 2 is securely attached to the roller 10b. To be able to suck. Further, as shown in FIG. 2, since the width of the label 2 is narrower than that of the seat 1, the label 15 is formed in the hole 15b of the row in which air is sucked from the outside in the intake portion 13. 2, there is a region where only the sheet 1 is opposed, but the sheet 1 is already sucked and conveyed by the roller 10 a at the front end in the conveying direction, and therefore is sucked through the hole 15 b by the intake portion 13. Even if there is a region to be removed, the roller 10b is not attracted.
[0039]
Thereafter, the sheet 1 from which the label 2 has been peeled is conveyed by the rotation of the roller 10a while being sucked by the roller 10a, and the label 2 which has been peeled off from the sheet 1 is information that has been sucked by the roller 10b. It is conveyed by the rotation of the roller 10b (FIG. 3E).
[0040]
When the sheet 1 conveyed in a state of being sucked by the roller 10a reaches a region where air is exhausted from the inside through the hole 15a by the exhaust part 12a, the air is exhausted through the hole 15a by the exhaust part 12a. Detach from the roller 10a. Similarly, when the label 2 conveyed while being sucked by the roller 10b reaches a region where air is exhausted from the inside through the hole 15b by the exhaust part 12b, the air through the hole 15b by the exhaust part 12b. Is released from the roller 10b (FIG. 3 (f)).
[0041]
In the present embodiment, the distance between the roller 10a and the roller 10b is wider than the thickness of the sheet 1 and smaller than the sum of the thickness of the label 2 and the thickness of the sheet 1 in the region closest to each other. The pressure sensor 14 detects the pressure, and it is determined that the area where the label 2 of the sheet 1 is attached has reached the area where the roller 10a and the roller 10b are closest to each other. However, the present invention is not limited to this. For example, a detection means for detecting the label 2 is provided, or the area where the label 2 of the sheet 1 is attached is the roller 10a and the roller 10b. The area where the label 2 of the sheet 1 is affixed is determined by calculating the timing at which the sheet reaches the closest area. There is also conceivable to adopt a configuration in which the intake air in the intake section 11b, 13 upon reaching the area where the nearest place.
[0042]
Further, the sheet conveying unit that sucks and conveys the sheet 1 is not limited to the roller 10a as in the present embodiment, but may be a belt that sucks and conveys the sheet 1 or the like. In that case, similarly to the roller 10a, the label 2 can be easily peeled from the sheet 1 if the sheet 1 has a curved shape such that the downstream side in the conveyance direction of the sheet 1 is away from the roller 10b than the region closest to the roller 10b. be able to.
[0043]
Further, in this embodiment, after the leading end in the transport direction of the label 2 is peeled off from the sheet 1 by the suction portion 13, the label 2 is sucked from the sheet 1 to the roller 10b by the suction portion 11b. Although it is peeled off, a separator that separates the label 2 from which the leading end in the conveying direction is peeled off by the air suction part 13 from the sheet 1 is provided as a second peeling means without providing the air suction part 11b between the rollers 10a and 10b. It is also possible to peel off the label 2 from the sheet 1 by using this separator.
[0044]
In this embodiment, the sheet 1 is bent by being sandwiched between the rollers 10c and 10d before the sheet 1 is supplied between the rollers 10a and 10b from which the label 2 is peeled from the sheet 1. Thus, the label 2 is easily peeled off from the sheet 1 by the rollers 10a and 10b. However, even when the sheet 1 is not sandwiched between the rollers 10c and 10d, the effect of the present invention is achieved. Can get.
[0045]
Further, if the heating unit is provided on the upstream side in the conveyance direction of the sheet 1 from the region where the roller 10a and the roller 10b are closest to each other, and the heating unit 1 heats the sheet 1 with the label 2 attached thereto, the label 2 The label 2 can be easily peeled off from the sheet 1 when an adhesive whose heating is weakened or disappears by heating as an adhesive means for attaching the film to the sheet 1 is used.
[0046]
In addition, the sheet 1 to which the label 2 is attached is not limited to a single piece but may be a continuous one.
[0047]
【The invention's effect】
As described above, in the present invention, in the label peeling apparatus that peels a label affixed to a sheet from the sheet so as to be peelable, the sheet conveying means for conveying the sheet while sucking the sheet and the sheet conveying means are provided facing the sheet conveying means. The label affixed to the sheet is peeled off from the sheet, and the label recovery means for recovering the label peeled off from the sheet is collected, and the sheet is sucked at least in an area closest to the label recovery means in the sheet conveying means, In addition, the label collecting unit sucks the leading end portion of the label in the transport direction of the label affixed to the sheet sucked by the sheet transport unit, thereby separating the portion from the sheet, And a second peeling means for peeling the label from which the front end portion of the sheet is peeled from the sheet by the peeling means. Because the label is attached to the sheet such as paper so that it can be peeled off, it is not limited to the label whose adhesive strength weakens or disappears when heat is applied. can do.
[0048]
In the second peeling means, the label is peeled from the sheet by sucking the label sucked by the first peeling means by a suction source different from the first peeling means. The label from which the leading end portion in the conveying direction is peeled off from the sheet can be reliably peeled off from the sheet by the first peeling means.
[0049]
In addition, the distance between the areas closest to each other between the sheet conveying means and the label collecting means is larger than the sheet thickness and smaller than the sum of the label thickness and the sheet thickness, and the label collecting means A pressure detecting means for detecting a pressure in a region closest to the sheet conveying means, and when the pressure detecting means detects the pressure, the label collecting means rotates in the sheet conveying direction in the sheet conveying means, and In the configuration in which the label is sucked by the first peeling means, the rotation operation in the label collecting means and the suction action in the first peeling means are performed only in the region where the label of the sheet is attached, Thereby, it is possible to prevent the sheet from being sucked by the label collecting means in the area where the sheet label is not attached.
[0050]
Further, in the case where the sheet conveying unit is configured to have a curved shape such that the downstream side in the sheet conveying direction is away from the label collecting unit than the region closest to the label collecting unit, the label can be easily peeled from the sheet. Can do.
[Brief description of the drawings]
FIG. 1 shows an embodiment of a label peeling apparatus according to the present invention, where (a) is a diagram showing a configuration, and (b) is a diagram of rollers 10a and 10b shown in (a) as seen from the direction of arrow A. is there.
FIG. 2 is a diagram illustrating a configuration of a sheet from which a label is peeled by the label peeling apparatus shown in FIG.
FIG. 3 is a diagram for explaining the operation of the label peeling apparatus shown in FIG. 1;
[Explanation of symbols]
1 Sheet 2 Labels 10a to 10d Rollers 11a, 11b, 13 Intake portions 12a, 12b Exhaust portion 14 Pressure sensors 15a, 15b Holes

Claims (3)

A label peeling device for peeling off a label affixed to a sheet from the sheet,
Sheet conveying means and label collecting means arranged opposite to each other;
A sheet supply means for supplying the sheet with the label affixed between a sheet conveying means and the label collection means in a direction in which the label faces the label collection means;
The sheet conveying means sucks the sheet supplied from the sheet supply means,
The label collecting means includes
In the state where the sheet supplied from the sheet supply means is being sucked by the sheet conveying means, the label is affixed to the sheet supply means at the leading end side in the sheet supply direction by sucking the label attached to the sheet. First peeling means for peeling in order from,
A second peeling means for recovering the label peeled from the sheet by the first peeling means;
The interval between the regions of the sheet conveying means and the label collecting means that are closest to each other is wider than the thickness of the sheet, and narrower than the sum of the thickness of the label and the thickness of the sheet,
The label collecting unit includes a pressure detection unit that detects a pressure in an area closest to the sheet conveyance unit, and the conveyance of the sheet in the sheet conveyance unit when the pressure is detected by the pressure detection unit. A label peeling device that rotates in the direction and sucks the label by the first peeling means. In the label peeling apparatus of Claim 1,
The second peeling means includes a suction source different from the first peeling means, and collects the label by sucking the label sucked by the first peeling means. Label peeling device. In the label peeling apparatus according to claim 1 or 2 ,
The label peeling apparatus according to claim 1, wherein the sheet conveying unit has a curved shape such that a downstream side in the sheet conveying direction is separated from the label collecting unit with respect to an area closest to the label collecting unit.

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