JPH0323416B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic label pasting method and apparatus for peeling off a label issued by a printer and making it possible to paste a label on an irregularly shaped object. be.

(Conventional technology) In most conventional labeling techniques, a label issued by a printer is peeled in parallel from a backing paper using a peeling device, and then the label is handled by a vacuum suction pad-type hand and then pressed and pasted onto the object to be labeled. As shown in Japanese Unexamined Patent Publication No. 59-51039, some drums have small holes on the outer periphery of the drum to hold the label under suction, and then apply pressure to an appropriate location on the object.

(Problems to be Solved by the Invention) However, when the aspect ratio of the label becomes large, the method of peeling the label parallel from the backing paper is difficult due to the relationship between label stiffness, adhesive strength of glue, peeling speed, and changes in outside temperature. , it becomes difficult to stably peel off the label, and it also becomes difficult to handle the label.

Further, if the positional relationship between the label peeling point and the object to be labeled cannot be stably ensured, or if the shape of the surface to which the label is applied is uncertain, the function as a label application device will not be satisfactory.

The above-mentioned problem becomes particularly noticeable when a long and narrow label (width 25 mm x length 230 mm) is attached to an irregularly shaped binding band (width 32 mm) of a wire coil when performing wire distribution management.

The outer diameter and external shape of the wire rod coil after rolling and winding are determined by the customer's needs and are not constant, and the position and shape of the binding band may also be convex or twisted.

When automatically attaching long and thin labels to such cable ties, an important technical issue is how to systematize the series of operations from peeling to handling, detecting the position of the object to be labeled, and attaching the labels. The current situation is that conventional techniques are not satisfactory.

In addition, the above-mentioned Japanese Patent Application Laid-Open Publication No. 59-51039 discloses that the center axis of the drum (the outer peripheral surface of the drum)
No consideration has been given to the difficulties when the label is not parallel to the label and the issue of attaching a long and narrow label without wrinkles or sagging in the middle.

(Means for Solving the Problems) In view of the above-mentioned problems, the present invention provides a roller-type label pasting method and an apparatus therefor that makes it possible to easily carry out a series of operations from label peeling to pasting. It is something.

The details will be explained below based on the diagram.

FIG. 3 shows an example of work using the method and apparatus of the present invention, in which wire coils 15, 15
is placed on the conveyor 16 and transported,
A label is attached to a binding band 17, and a label attaching device 20 of the present invention is attached to the tip of an arm 19 of a robot 18 for use.

21 is a label printer, 1 is a roller, 5 is a compressed air hose group, and 7 is a roller fixing fitting. The arm 19 can rotate and move up and down using the point of connection with the robot 18 as a fulcrum.

Next, the labeling device 20 of the present invention will be described in detail. FIG. 1a is a front view of the labeling apparatus of the present invention, and FIG. 1b is a side view.

In Figures 1a and b, 1 is made hollow by a roller, and suction holes 2a and 2b are provided on the outer periphery, and suction holes 2
Connect the hose 5a to a, and connect the hose 5b to the suction hole 2b.
are connected so that each can be independently sucked from the outside.
Compressed air blow-off holes 3a and 3b are also provided, to which a hose 5c is connected so that they can be blown out at the same time. Suction holes 2a, 2b Blowout holes 3a, 3b
One or more are provided in the width direction of the roller.

The hoses 5a, 5b, 5c are connected to the roller 1 by communicating through the rotary joint 6.
The structure should be such that the hose does not twist even when the hose rotates. The roller 1 is rotatably held by a roller mounting bracket 4, and a rotational force is applied to the roller 1 by a drive motor 8 via a pulley 9. Further, the roller mounting fitting 4 is movably connected to the fixing fitting 7 by a shaft 11, and shock absorption is achieved by a spring 10. Reference numeral 12 is a limit switch for detecting contact with the surface to be applied, and reference numeral 26 is a limit switch for stroke end.

Next, FIG. 5 is a perspective view showing the shape of the roller 1. The patent of this roller 1 is that a circular curved surface portion 13 as shown in FIG. 6B is provided on a part of the flat outer peripheral surface as shown in FIG. 6A. The suction holes 2a and 2b are provided in pairs at substantially equal distances on the left and right sides in the circumferential direction of the roller 1 from this curved surface portion 13 as a base point. The distance through the curved surface 13 of the suction holes 2a and 2b is set to be shorter than the length of the label to be handled. The length of the curved surface 13 provided on the roller in the circumferential direction is suitably 3% to 15% of the circumferential length of the roller.

Further, the compressed air blowing hole 3a is set between the curved surface 13 and the suction hole 2a, and the blowing hole 3b is set between the curved surface 13 and the suction hole 2b. The reason why the curved surface 13 is provided on a part of the circumferential direction of the roller 1 is to prevent labeling when the labeling surface and the outer circumferential surface of the roller 1 are not parallel to each other, such as the binding band of the wire coil to which the label is attached. This is to ensure that this is done correctly.

Moreover, if the curved surface 13 is provided around the entire circumference of the roller 1,
When peeling and suctioning the label and holding it on roller 1,
Because a flat label does not follow the curved surface of the roller, and reliable retention is impaired, it should be part of the circumferential direction of the roller. Furthermore, if the surface of the roller 1 is provided with a rubber lining, this will help prevent slippage between the label and the roller.

Next, the label peeling and pasting operations will be explained.

First, in the peeling operation, as shown in FIG. 2a, the roller 1 is rotated so that the suction hole 2a is positioned at the end of the label 23 on the mount 22 printed by the printer. In this state, after the end of the label 23 is suctioned, the roller 1 is rotated and moved to the right in the figure to peel it off.

At this time, the suction hole 2b and the blowout holes 3a, 3b are not operated and are kept in a closed state. When the suction hole 2b is aligned with the end of the label 23, the suction hole 2b is operated to suck the label 23, and the peeling is completely completed.

Next, in the pasting operation, as shown in FIGS. 2b and 2c, the position of the curved surface 13 of the roller 1 is controlled by the drive motor 8 so that it is positioned on the label pasting surface 24 of a binding band of a wire coil or the like. Next, the label pasting surface 24
While in contact with the compressed air outlet 3a,
Blowouts are performed simultaneously from 3b. At this time, suction hole 2
a, 2b after the blowing holes 3a, 3b start blowing,
The suction action is stopped after a delay of several seconds.

By doing so, the label 23 is sequentially pasted on both the left and right sides centering on the curved surface 13 of the roller 1, and it is possible to completely prevent the label from sagging or wrinkled in the lengthwise direction. Particularly if the label has a bar code printed on it, wrinkles or sagging should not occur, which is very effective.

Further, in this pasting operation, the curved surface 13 provided on the roller 1 brings about the following excellent effects.

FIG. 4 shows the difference in label pasting work depending on the presence or absence of the roller 1 and the curved surface 13. As shown in the figure, when the label pasting surface 24 is at an angle with respect to the central axis 25 of the roller 1, As shown in Figure 4b, when the roller 1 does not have a curved surface, the label 23
It becomes difficult to contact the central position of the head. However, as shown in FIG. 4a, having a curved surface 13 enables contact at the central position.

When peeling off the label on the backing paper by suction,
The quality of the label (thickness, stiffness, surface texture) and the adhesive strength of the glue have a major influence, and at least enough suction power is required to overcome the adhesive strength. Furthermore, if there is no problem with pasting, it is also possible to adsorb with weak suction pressure by leaving the end of the label without adhesive.

Furthermore, when applying the label, if a roller is rotated in contact with the object to which the label is applied, it becomes very difficult to follow the surface of an irregular shape, which causes wrinkles in the label. As mentioned above, this has a great negative impact on reader reading performance, such as in the case of barcode printed labels, which have recently been developed in the logistics industry.

The present invention has the great feature that it can be applied without wrinkles by tracing the surface of the label from the center to the edges with a jet of compressed air, just as when applying a label by hand.

(Effects of the Invention) As explained above, the present invention can reliably and easily peel off a long, difficult-to-handle label from a mount and attach it to an object, and also allows the outer peripheral surface of the roller to Labels can be reliably affixed even when the surface of the object to be affixed is not parallel, which is industrially useful.

[Brief explanation of the drawing]

Figures 1 a and b are front and side views of the device of the present invention, Figures 2 a, b, and c are explanatory diagrams of the label peeling and pasting operations of the present invention, and Figure 3 is an operation using the device of the present invention. FIG. 4 is an explanatory diagram of another operation of the present invention, FIG. 5 is a perspective view of the roller of the present invention, FIG. Figure B is a sectional view taken along the line BB in Figure 5. 1: Roller, 2a, 2b: Suction hole, 3a, 3
b: Blowout hole, 4: Mounting bracket, 5, 5a, 5b,
5c: Hose, 6: Rotary joint, 7:
Fixing bracket, 8: Drive motor, 9: Pulley, 1
0: Spring, 11: Shaft, 12: Contact detection limit switch, 13: Stroke end limit switch, 15: Wire coil, 16: Conveyor, 17: Cable band, 18: Robot,
19: arm, 20: label pasting device, 21: printer device, 22: mount, 23: label, 2
4: label pasting surface, 25: roller center axis.

Claims (1)

[Claims] 1. The top of a circular curved surface formed on a part of the outer peripheral surface of a flat roller is brought into contact with the center of the length of the label on the backing paper, and the label is peeled off from the backing paper and adsorbed by suction force. and a step of positionally controlling the top of the curved surface to bring it into contact with the labeling surface, blowing out compressed air from both sides of the top of the curved surface in the circumferential direction, and releasing the suction force to affix the label. Features automatic label pasting method. 2. A hollow circular flat roller is rotatably mounted on a mounting bracket, a part of the outer circumferential surface of the flat roller is a circular curved surface, and a pair of suction rollers are placed at approximately the same distance on the left and right in the circumferential direction of the roller from the top of the curved surface as a base point. A hole is provided, a hose is attached to each suction hole, the length of the suction hole passing through the curved surface of the roller is set slightly shorter than the length of the label, and between the curved surface and each suction hole, An automatic label pasting device characterized by being equipped with a blow-out hole.