JPH0285134A - Label attaching apparatus - Google Patents

Abstract

PURPOSE:To permit a label to be attached to the outer peripheral surface of a work without drawing air therein by providing at least one pressure transferring roller whose outer peripheral part is freely rotatable along a predetermined path and a sheetlike covering material to which springs give a tension and which is bendable with an adequate expansibility. CONSTITUTION:A chuck 10 is provided above a stopper 4 which permits a work 3 to be detachably attached thereto by its opening and closing action and is vertically movable and a bracket 5 is provided with two arms 11 rotatably movable along a predetermined path in conjunction with the chuck 10. Each of the two arms 11 is provided at its end with a pressure transferring roller 9 whose peripheral part is freely rotatable and with a spring hook 12 on the side face thereof. Each end of a sheetlike covering material 13 is engaged with one end of an extension spring 14 and the other end thereof is engaged with the spring hook 12 in such manner that the covering material 13 encloses the pressure transferring rollers 9, the extension springs 14 giving a tension to the covering material 13 all the time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an apparatus for attaching a label to the outer periphery of a columnar workpiece.

2. Description of the Related Art Conventionally, this type of labeling apparatus has had a configuration as shown in FIG.

That is, the work 3, which has been sent by the production conveyor 1 and has the label 2 pasted on the upper surface of its outer periphery, is positioned and stopped by the stopper 4.

! a There is a bracket 6 on the top of the conveyor 1 as shown in Figure 4.
The slide bearing 6 and the guide shaft γ installed on the roller make it possible to slide the two compaction rollers 9, which are always exerted a force in the center direction by the compression spring 8. It is equipped with a chuck 10 that can move up and down. Attach the label/L/2 to the workpiece 3 from the top of the conveyor 1 to the chuck 1.
Lower 0 and chuck workpiece 3 (IL)
. In this state, the chuck 1o is raised and passed between the two compacting rollers 9 from below (b) (0). At this time, the workpiece 3 and rolling pressure 0 caused by the elasticity of the compression spring 8
- Due to the contact pressure with the rubber 9, the label (r)v2 was brought into close contact with the outer circumference of the r)-ri 3 and one wrap was applied.

Problems to be Solved by the Invention However, in such a conventional configuration, since the label and the compaction roller are in direct contact, the force for pasting the label on the workpiece is dependent on the elasticity (pressure force) of the compression spring provided on the guide shaft. ) and still chucked work 3
When passing between two compaction rollers, if the moving speed of the chuck is set north of a certain limit, the I impact force when the workpiece 3 and compaction roller 9 come into contact increases, and the rollers / (land). This results in a gap between the roller and the workpiece.At this time, the force to stick the label on the label decreases, the workpiece and the label do not stick together, and air gets caught between the label and the workpiece (lifting). There was a problem that this occurred.

The present invention is intended to solve these problems and aims to attach a label to the outer periphery of a workpiece without causing air to become trapped.

Means for Solving the Problem In order to solve this problem, the present invention provides one or more compaction rollers whose outer periphery freely rotates and moves on a fixed trajectory, and a tension roller using a spring. A workpiece with a label pasted on a part of the outer periphery is inserted into the foreskin material, a sheet-shaped foreskin material is provided with four bends, and has a certain degree of extensibility. The label is affixed to the outer circumference of the work uniformly and closely by squeezing the outer circumference of the work with the wrapping material through the interlocking enclosing motion of the materials.

Function: With this structure, the foreskin is interposed between the label and the rolling roller, and the foreskin is not pushed out by the pressure of the rolling roller/d workpiece.
It moves on a fixed trajectory in conjunction with the vertical movement of the chuck. Furthermore, since the compacting roller does not directly contact the outer circumferential portion of the workpiece, even if the driving speed of the chuck is increased, the phenomenon that the compacting roller separates from the workpiece as in the prior art cannot occur.

As a result, the label can be attached tightly to the outer periphery of the workpiece without trapping air.

Embodiment FIG. 1 shows a schematic diagram of a labeling apparatus according to an embodiment of the invention.

In Fig. 1, reference numeral 1 denotes a shell conveyor, and a stopper 4 for positioning a workpiece 3 is attached to the transport conveyor 1.A stopper 4 is attached to the top of the stopper 4 to allow the workpiece 3 to be attached and detached by opening and closing operations. .

A chuck 10 that moves up and down is provided, and the bracket 5 is provided with two arms 11 that can rotate in a fixed trajectory in conjunction with the chuck 1o. Each of the two arms 11 has a rolling pressure roller 9 attached to its tip end that rotates freely on its outer periphery, and a spring hook 12 is attached to the side surface of the arm 11. One end of a tension spring 14 is connected to both ends of the sheet-like foreskin material 13, and the other end of the tension spring 14 is connected to the spring hook 12 so that the foreskin material 13 wraps around the two compaction rollers 9. Tension is always applied to the foreskin material 13 by the tension spring 14.

Next, the labeling operation in a practical example will be explained with reference to FIG.

First, a workpiece 3 with a label 2 pasted on a part of its outer periphery in advance.
is sent by the conveyor 1 and positioned by the stopper 4 (a). Chuck 1 from the top of this work 3
0, chucks the front and rear ends of the workpiece 3, and in this state raises the chuck 1°, inserting the workpiece 3 into the foreskin material 137) hung on the two arms 11 that are fully open. (b). The lifting of the chuck 1o is stopped at a position where the workpiece 3 is higher than the intraocular pressure roller 9. Then, as the two-wooden arm 11 moves to the lower part of the workpiece 3 through a rotating movement, the label material 13 wraps the workpiece 3 and attaches the label to the outer circumference of the workpiece 3 in close contact with it.

Foreskin material 13 that is in direct contact with Labe/L/2.

Since the tensile force is constantly applied by the pull + J' spring 14, the foreskin material 13, label 2, and workpiece 3 are always kept in close contact with each other, and the workpiece 3 and label 2
No air is trapped between the two.

As a result, even if the moving speed of the chuck, so-called label pasting speed, is increased, the label can be pasted closely to the workpiece without trapping air.

Effects of the Invention As described above, according to the present invention, it is possible to increase the speed of attaching a label to a workpiece, and there is no air entrapment, so that efficient label attaching can be achieved.

[Brief explanation of drawings]

Figure 1 is a diagram of a labeling device according to an embodiment of the present invention, and Figure 2 (!L) (b) (C) □ shows the operation of labeling a workpiece according to an embodiment of the present invention. Explanatory diagram,
Fig. 3 is a schematic diagram of a conventional D label pasting device, and Fig. 4 a (
&) (b) (C) d is an explanatory diagram showing the operation of label pasting by a conventional label pasting device. 1... Conveyor, 2... Label,
3... Work S 4... Strike, Pa, 5.
...Bracket, 6...Slide bearing, -r
,,, ,... Guide shaft, 8... Compression spring, 9... Compaction roller, 10... Chuck, 11... Arm, 12... ... Spring hook, 13 ... Sheet-like foreskin material, 14 ...
...Retraction spring. −~ ri ψ? S = meeting; ; Fig. 3 1-One-layer Hario Kosogi A2--Rahe'le 3--Rolla cow-9, Suk/Soba'-5-11 GerakezuL) f---Arm 1z, - 1 (418・ke)

Claims (1)

[Claims] It is equipped with one or more compaction rollers whose outer periphery freely rotates and moves on a fixed trajectory, and a sheet-like wrapper material that is tensioned by a spring and has a bendable and moderate extensibility. A workpiece with a label formed on one side attached to a part of the outer circumference is wrapped while being sequentially squeezed by the interlocking enclosing action of the compacting roller and the sheet-like wrapping material, and the label is evenly applied to the outer circumference of the workpiece. A label pasting device that features pasting.