JP2008018980A - Labeling apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a labeling apparatus which applies a label neatly without wrinkles to an undeformed item to be labeled as well as a deformed item to be labeled. <P>SOLUTION: This labeling apparatus includes at least a label supply means, a transporting means for the item to be labeled and a negative pressure suction type application drum 30 disposed between the supply means and the transporting means. While a label L supplied from the supply means is adsorbed and transported on the peripheral face of the drum 30, the label L is applied to the outer peripheral face of the item 40 to be attached which is transported synchronously with the supply of the label L by a transporting means for the item 40. The outer peripheral face of the drum 30 is formed as a protruded peripheral face 33 having a convex cross-section. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a label sticking device that can stick a label cleanly even when an adherend such as various containers is bent or warped.

2. Description of the Related Art A syringe that is a disposable syringe in which a chemical solution is sealed in a syringe cylinder is known.
Syringe cylinders were initially made of glass, but plastic resins account for the majority of demands for lower manufacturing costs and ensuring safety.
Moreover, in order to grasp | ascertain the injection amount of a chemical | medical solution, the display label which described the liquid quantity scale, the chemical | medical solution name, etc. on the transparent film is affixed on the outer peripheral surface of a syringe cylinder.

An apparatus for attaching a display label to a syringe cylinder is disclosed in Patent Document 1.
This apparatus is equipped with a display label attaching mechanism that peels off from the feed separator and attaches a display label, and attaches a display label with a liquid volume scale to the outer peripheral surface of the syringe cylinder.
Patent Document 1 does not describe details of the display label attaching mechanism.

  Conventionally known label applicators have an adhering drum that rotates in one direction around a rotation axis. After delivering the display label to the peripheral surface of the adhering drum, it synchronizes with the start end of the display label that has undergone an adhesive treatment. It sticks so that it may wind around the outer peripheral surface of the to-be-adhered thing (syringe cylinder) supplied.

JP 2002-95746 A

The above-described conventional label sticking apparatus has the following problems.
(1) In the conventionally known sticking drum, the outer periphery of the portion that adsorbs the display label has the same diameter along the axial direction of the rotation shaft.
Therefore, if the axial center of the cylindrical syringe cylinder is a straight line and the outer peripheral surface is a perfect circle, both the peripheral surfaces of the application drum and the syringe cylinder are in continuous contact with each other, and the display label can be applied neatly.
However, since the syringe cylinder is made of resin, if a deformed syringe cylinder such as bent or warped is mixed in, the gap between the flat peripheral surface of the sticking drum and the concave peripheral surface of the syringe cylinder Since it leaves | separates, the separation location of a display label will be affixed, leaving a clearance gap between syringe cylinders.
If a gap is formed between the syringe cylinder and the display label, the display label is wrinkled and the aesthetic appearance after application is impaired.
In particular, there is a problem that the display label is more likely to be wrinkled due to the slight deformation of the syringe cylinder, as the display label is bonded to the entire back surface.
(2) If wrinkles remain on the display label after sticking, the commercial value as a syringe is lost.
(3) In order to eliminate the inconvenience described above, there is a method of removing and sorting only the defective syringe deformed before applying the display label. However, not only is the burden of the sorting cost imposed, but the removed syringe also has a chemical solution. Since it is filled, not only a syringe but also an expensive chemical solution is wasted, resulting in a large economic loss.
(4) Not only an example of a syringe, but also a label sticking device that can stick a display label cleanly so as not to wrinkle even when deformed adherends are mixed in undeformed adherends. Suggestion is desired.

The present invention has been made in view of the above points. The object of the present invention is not only an adherend that is not deformed, but also a label sticker that can be attached cleanly so that the label does not wrinkle even if the adherend is deformed. To provide an apparatus.

The first invention of the present application comprises at least a label supply means, an adherend conveying means, and a negative pressure suction type sticking drum disposed between the two means, and the label supplied from the label supply means A label affixing device for adhering a label to an outer peripheral surface of an adherend conveyed in synchronization with supply of a label by an adherend conveying means while adsorbing and transferring to the peripheral surface of the affixing drum, Provided is a label sticking device characterized in that the outer peripheral surface is formed as a protruding peripheral surface having a mountain-shaped cross section.
According to a second aspect of the present invention, there is provided the label sticking apparatus according to the first aspect, wherein a central portion of the projecting circumferential surface of the sticking drum is formed substantially parallel to the rotation axis of the sticking drum.
According to a third aspect of the present invention, in the first or second aspect of the present invention, the conveying means for the adherend has a plurality of rotating plates, a belt that rotates around the rotating plates in one direction, and a predetermined interval between the belts. A plurality of idling rollers forming a pair, and an adherend is rotatably mounted on the plurality of idling rollers forming a pair, and is configured to be transportable toward a sticking drum. A labeling device is provided.
4th invention of this application provides the label sticking apparatus characterized by the above-mentioned 1st invention, wherein the adherend is a syringe provided with a syringe cylinder.
According to a fifth aspect of the present invention, there is provided the label sticking device according to the first aspect, wherein the adherend has an outer peripheral surface formed non-parallel to the axis.

By forming the outer peripheral surface of the application drum as a projecting peripheral surface with a mountain-shaped cross section, not only the non-deformed adherend but also the label is wrinkled so that it does not wrinkle even if deformed adherends are mixed. can do.
In particular, when the adherend is a syringe provided with a syringe cylinder, not only a syringe but also an expensive chemical solution is not wasted, and economical loss can be avoided.

  Embodiments of the present invention will be described below with reference to the drawings.

(1) Outline of Label Affixing Device FIG. 1 shows a side model diagram of the label affixing device according to the present invention.
The label sticking apparatus includes at least a label supply means 10, a transport means 20 for an adherend 40, and a sticking drum 30 disposed between the means 10 and 20.
Hereinafter, each part will be described in detail.

(2) Adherent As shown in FIG. 3, in the present invention, the syringe cylinder 41 in which the adherend 40 is previously filled with a chemical solution and sealed, a piston rod 42 for extruding the chemical solution, and a cap for sealing the tip of the syringe cylinder 41 The case where it is a well-known syringe provided with 43 is demonstrated as an example. A rubber piston plug may be used instead of the piston rod 42 for sealing the chemical solution.
The adherend 40 to be affixed with the display label L is not limited to a syringe, and has a cylindrical shape with a uniform diameter as a whole and is easily bent or warped, or the center of rotation of the adherend 40. Including those whose outer peripheral surface is formed non-parallel to the (axis).

(3) Label supply means The label supply means 10 has a large number of display labels L or display label sheets, and a label supply unit that supplies these labels L in units of sheets and is supplied in units of sheets. A drum or a guide for conveying the display label L or the display label sheet to the peripheral surface of the sticking drum 30 is provided.
The display label L includes a known roll label, a single wafer label, and a tag label, and the material thereof includes paper and a resin film (such as a heat-shrinkable film and a transparent film).
In this example, a liquid level scale, a chemical name, etc. are attached to the rectangular transparent film constituting the display label L in advance.
Further, the entire length of the display label L may be either the entire circumference of the adherend 40 (attached all around) or the circumference of the adherend 40 or less (partially attached).

(4) Conveying means for the adherend As shown in FIG. 1, the conveying means 20 for conveying the adherend 40 toward the sticking drum 30 includes a plurality of rotating plates 21, 21 such as sprockets, and the rotating plates 21, A belt 22 such as a chain spanning the belt 21 and a plurality of idling rollers 23 forming a pair provided on the belt 22 at a predetermined interval.

When one of the rotating plates 21 and 21 is driven to rotate, the belt 22 rotates in one direction.
The plurality of idling rollers 23 forming a pair are rollers for rotatably supporting the lower half of the peripheral surface of the adherend 40, and the adherend 40 is continuously supplied from the right side of the drawing as the belt 22 rotates. And can be conveyed toward the peripheral surface of the sticking drum 30.
As shown in FIG. 2, a plurality of belts 22 may be arranged side by side to support the peripheral surface of the adherend 40 in order to maintain and convey a stable posture of the horizontally placed adherend 40.

In addition, although this example demonstrates the case where the display label L is affixed in the middle of conveying the adherend 40 horizontally, while arrange | positioning the rotating shaft 31 of the sticking drum 30 vertically, and attaching the adherend 40 vertically You may make it affix the display label L, conveying in a state. As a means for transporting the adherend 40 in the vertical state, a known transport mechanism such as a belt conveyor or a screw conveyor can be employed.

(5) Sticking drum The sticking drum 30 is a negative pressure suction type rotating drum that rotates in one direction about a horizontally oriented rotating shaft 31.

  The peripheral surface which adsorbs the display label of the conventional sticking drum has the same diameter along the axial direction of the rotating shaft.

On the other hand, in the present invention, as shown in FIGS. 2 and 4 in an enlarged manner, the peripheral surface of the sticking drum 30 is covered with a hard resin such as silicon rubber, and has a convex cross section inclined from the central portion toward both ends. It is formed as a projecting peripheral surface 33 having a (cross-sectional mountain shape).
In other words, the projecting peripheral surface 33 of the sticking drum 30 has a diameter that changes along the axial direction of the rotating shaft 31 (not shown), and has a gradient of the inclination angle θ with respect to the parallel line of the rotating shaft 31. .

The protruding peripheral surface 33 is formed on the peripheral surface of the sticking drum 30 because the peripheral surface of the sticking drum 30 adheres to the adherend when the display label L adsorbed on the protruding peripheral surface 33 is applied as shown in FIG. This is to avoid contact with 40.
The inclination angle θ of the projecting peripheral surface 33 is appropriately selected in consideration of the expected bending or warping amount of the adherend 40.

  Although the central portion of the projecting circumferential surface 33 may be formed to be sharp like a ridgeline, as shown in FIG. 4, the constant width of the central portion of the projecting circumferential surface 33 is substantially parallel to the parallel line of the rotation axis. When formed as a surface, the suction area increases and the posture of the display label L during conveyance is stabilized.

  As illustrated in FIGS. 1 and 2, a fixed distribution board 50 is disposed on one side of the sticking drum 30, and an arc-shaped negative pressure groove 51 is formed on the opposite surface of the fixed distribution board 50. Has been.

Through the negative pressure groove 51 of the distribution board 50 and the air passage 32 formed in the main body of the sticking drum 30, the section of the sticking drum 30 extends from the position of the label supply means 10 to the section where the display label L is stuck to the adherend 40. Negative pressure is generated on the outer peripheral surface.
One end of each air passage 32 formed in the main body of the sticking drum 30 is formed at a position passing directly above the negative pressure groove 51, and the other end of each air passage 32 is formed at the center of the outer peripheral surface of the sticking drum 30. The ventilation hole 34 is formed by being exposed.
In this example, the case where the vent hole 34 is formed over the entire surface of the protruding peripheral surface 33 of the sticking drum 30 will be described. However, the vent hole 34 may be formed only at the center of the outer peripheral surface of the protruding peripheral surface 33. is there.

Reference numeral 52 in FIG. 1 denotes an air injection hole, which functions to forcibly separate the display label L from the peripheral surface of the sticking drum 30 by injecting air from the vent 34 on the peripheral surface of the sticking drum 30 to the outside. To do.

(6) Affixing method In FIG. 1, the label supply means 10 starts supplying the display label L toward the affixing drum 30 in units of one sheet.

The display label L supplied from the label supply means 10 is conveyed by being adsorbed on the projecting peripheral surface 33 having a convex cross-section (cross-sectional chevron) of the negative pressure suction type sticking drum 30.
In addition, adhesiveness is provided to the back surface of the display label L that is attracted to the sticking drum 30 and being conveyed.

  As a means for imparting adhesiveness to the back surface of the display label L, the display label L that has been subjected to a bonding process in advance is supplied to the sticking drum 30 or is attracted to the sticking drum 30 and is being transported. In the case of a heat-sensitive adhesive, it is heated to impart adhesiveness.

  On the other hand, the adherend 40 is mounted laterally on the plurality of idle rollers 23 constituting the conveying means 20 for the adherend 40, and sequentially conveyed toward the sticking drum 30.

Since the adherend 40 is supplied synchronously by the conveying means 20 of the adherend 40 in accordance with the supply timing of the display label L by the sticking drum 30, the display label L and the outer peripheral surface of the syringe cylinder 41 in order from the tip thereof. Wrapped in contact.
That is, as shown in an enlarged view in FIG. 2, the syringe cylinder 41 of the adherend 40 receives rotation of the sticking drum 30 and rotates on the plurality of idle rollers 23, and displays a label on the peripheral surface of the syringe cylinder 41 while rotating. L will be affixed.
When the sticking drum 30 reaches the sticking position where it meets the adherend 40, the negative pressure generated on the peripheral surface is cut off, and at the same time, the display label L is forcibly separated by switching to the release of air. The display label L does not remain on the peripheral surface of the sticking drum 30 under the influence of the above.

Here, the sticking state of the display label L will be described in detail.
Conventionally, the entire surface of the display label is adsorbed by the outer peripheral surface of the uniform diameter along the axial direction of the pasting drum, and the entire surface of the display label is pressed against the outer peripheral surface of the adherend by the outer peripheral surface of the uniform diameter of the pasting drum. The display label L was affixed.

  On the other hand, in the present invention, the display label L is pasted while pressing the display label L adsorbed on the projecting circumferential surface 33 having a convex cross section of the pasting drum 30 against the outer circumferential surface of the syringe cylinder 41. That is, the display label L is affixed while pressing the central portion of the protruding peripheral surface 33 against the outer peripheral surface of the syringe cylinder 41.

  Therefore, in the case of a regular product in which the axis of the syringe cylinder 41 is not bent and its outer peripheral surface is formed parallel to the axis of the syringe cylinder 41, the central portion of the display label L is continuously pressed. Then, the entire surface of the display label L can be attached to the outer peripheral surface of the adherend 40 so that it can be attached in a clean state without wrinkles.

Even if the axis of the syringe cylinder 41 is bent or the outer peripheral surface thereof is not parallel to the axis of the syringe cylinder 41, both ends of the protruding peripheral surface 33 are brought into contact with the outer peripheral surface of the syringe cylinder 41. 5 and 6, the entire surface of the display label L can be attached to the outer peripheral surface of the syringe cylinder 41 so that it can be attached in a clean state without wrinkles.
5 and 6 show the deformation of the outer peripheral surface of the syringe cylinder 41 of the adherend 40 for the sake of convenience in order to help understand the label sticking principle, and the actual deformation amount is small.

FIG. 5 shows a case where the outer peripheral surface of the syringe cylinder 41 is depressed, and FIG. 6 shows a case where the outer peripheral surface of the syringe cylinder 41 is swollen.
In any case, only the central part of the projecting peripheral surface 33 of the sticking drum 30 is in contact with the outer peripheral surface of the syringe cylinder 41, and the inclined peripheral surface excluding the central part of the projecting peripheral surface 33 is the syringe cylinder. No contact with the outer peripheral surface of 41.

Therefore, the sticking drum 30 can adhere the display label L to the outer peripheral surface of the syringe cylinder 41 without any gap without being affected by the deformation of the outer peripheral surface of the syringe cylinder 41.
As a result, even if the syringe cylinder 41 whose outer peripheral surface is deformed is mixed, the display label L can be attached to the peripheral surface of the syringe cylinder 41 without any gap.
Even if the entire surface of the back surface of the display label L is bonded, it is possible to eliminate the formation of wrinkles on the display label L due to the slight deformation of the syringe cylinder 41.

As described above, the label sticking apparatus according to the present invention is capable of sticking neatly by preventing the display label L from being wrinkled even if the syringe cylinder 41 whose outer peripheral surface is deformed is mixed.
Therefore, when the adherend 40 is a syringe containing an expensive chemical solution, not only the syringe but also the expensive chemical solution is not wasted, and economic loss can be eliminated.

Side view of the labeling device according to the invention Sectional view of II-II in FIG. Illustration of adherend (syringe) Cross section of the peripheral surface of the sticking drum Model diagram of the principle of labeling on the syringe cylinder when the outer peripheral surface is recessed Model diagram of the principle of labeling on the syringe cylinder when the outer peripheral surface is swollen

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Label supply means 20 ... Adhering material conveying means 30 ... Sticking drum 31 ... Rotating shaft 40 ... Adhering material (syringe)
41 ... Syringe tube

Claims (5)

At least a label supply means, an adherend conveying means, and a negative pressure suction type sticking drum disposed between the two means, and the label supplied from the label supply means is adsorbed to the peripheral surface of the sticking drum. A label affixing device for affixing a label on the outer peripheral surface of the adherend conveyed in synchronization with the supply of the label by the adherend conveying means,
The outer peripheral surface of the sticking drum is formed as a protruding peripheral surface having a cross-sectional mountain shape,
Labeling device.   The label affixing device according to claim 1, wherein a central portion of the projecting circumferential surface of the affixing drum is formed substantially parallel to a rotation axis of the affixing drum.   3. A method according to claim 1, wherein said adherend conveying means comprises a plurality of rotating plates, a belt rotating in one direction spanned around these rotating plates, and a pair of belts provided at predetermined intervals. A label affixing device comprising a plurality of idling rollers, wherein an adherend is rotatably mounted on the pair of idling rollers and can be conveyed toward an affixing drum.   The label affixing device according to claim 1, wherein the adherend is a syringe having a syringe cylinder. The label affixing device according to claim 1, wherein the adherend has an outer peripheral surface formed non-parallel to the axis.

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