JPS59174435A - Method of labelling soft vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for attaching labels to flexible containers.

When attaching a label to a soft container, the force of applying the label will cause the container to dent.

Therefore, there is a method of applying a label by supplying air into the container that can resist the external pressure acting on the container.

In other words, a nozzle that moves up and down is provided, the nozzle itself is inserted, air is forced into the container with the mouth closed, and the pressure of the air is used to attach a label to a container with a stable shape.

However, the above method has the following problems.

, B) Since the nozzle itself must be inserted to supply air into the container, it was necessary to align the centers of the containers accurately.

Therefore, when the centers do not match, air is not supplied into the container, making it difficult to attach the label.

Furthermore, the method of inserting the nozzle into the container has a complicated mechanism and is expensive.

・Gha> A crimped body such as a rubber plate is brought into direct contact with the mouth of the container to close the gap between the nozzle and the container. .

Therefore, if the pressure applied to the container is too strong, the container will collapse.
On the other hand, if it is weak, it will not be possible to supply enough air, making it difficult to adjust the optimal pressure bonding force.

This light was made to improve the above points, and the structure is affected by the misalignment of the center with the container in the cylinder. The purpose of this invention is to provide a method for attaching labels to flexible containers.

Next, an example will be described.

The present invention allows the pressurized disc with an air passage to be attached to the arm at the same time as labeling without inserting the container nozzle.
t. Even if the opening of the container and the pressure disc do not match, the pressure disc rotates to ensure close contact with the opening, and the pressing force to the container is applied via the elasticity of the spring, and the pressure disc is pressed into the container. The present invention relates to a method for attaching a label to a soft container by supplying air to maintain a predetermined internal pressure to attach a label. Each part of the apparatus according to the present invention will be described below.

Container transfer part As shown in Fig. 1, the center of the star wheel (1) is integrally fixed with a rotating shaft (11), and locking arms (12) are formed at equal intervals on the circumferential surface. It is a disk that accommodates the container (M) with this locking arm (12) and rotates in one direction to transfer the container (M).

That is, the container (M) sent from the screw drum (4) is guided by guides (13) and (14), and is configured so that it can be transported through the labeling section, which will be described later.

A rotating arm (2) is integrally installed above the star wheel (1) of the air supply unit so as to rotate at the same speed as the star wheel (1). (Fig. 2) The rotating arm (2) is connected to the locking arm (1) of the star wheel (1).
2) (four in the drawing), and a reciprocating arm (21) extending in a direction transverse to the rotating arm (2) is placed at the tip of each rotating arm (2) so that it can rotate freely. support

A roller (22) is installed on the upper surface of each reciprocating arm (21).

On the trajectory of the rough roller (22), the reciprocating arm (21)
A lower chord-shaped cam (23) protruding toward the surface of the reciprocating arm (21) is fixedly provided above the reciprocating arm (21).

In other words, the rotating arm (2) continues to rotate with the rotation of the star wheel (1), and when it comes into contact with the cam (23), the cam (
Each reciprocating arm (21) is pressed down by the peripheral surface of (23)
is configured so that it can independently reciprocate around the axis supported by the rotating arm (2). .

Therefore, the cam (23) is formed in such a shape that it can push down the reciprocating arm (21) in synchronization with the timing of label pasting over the section where the label work is performed. 7 An intermediate arm (24) is integrally connected to the tip of each reciprocating arm (21), and a spherical hole (
25).

The hole wall of the spherical hole (25) is not formed as a smooth surface, but
As shown in FIG. 4, the cross section is formed to protrude into a hemispherical shape.

A support shaft (3) of a pressurizing disk (33) for releasing air toward the mouth of the container (M) is provided in the spherical hole (25) so as to pass therethrough.

This support shaft (3) is configured to be able to move up and down with respect to the spherical hole (25) and swing freely.

As a result, the pressure disk (33) fixed to the lower end of the support shaft (3) can also be moved up and down and swing freely.

Note that the intermediate arm (24) simply connects the support shaft (3) to the container (M).
Since the purpose is simply to guide the reciprocating arm (21) directly above it, the support shaft (3) may be attached directly to the reciprocating arm (21).

In short, it is sufficient if the support shaft (3) can be installed on the extension of the reciprocating arm (21).

Inside the spindle (3), a supply channel (31) is opened continuously in the axial direction, and a crimp disk (33) is integrally provided below the spindle (3).
A spout (32) is formed on the lower end surface of the supply channel (31).
exposed and formed.

An elastic packing (34) is superimposed on the lower surface of the pressure bonding disk (33) in order to improve the adhesion with the opening of the container (M).

Further, a spring (5) is arranged between the Tf attachment disk (33) and the intermediate arm (24) so as to be attached to the nozzle (3), and the upper part of the nozzle (3) is supported by the elasticity of the spring (5). An annular slot 1 that prevents passage through the spherical hole (25)
Even if the container (N4) forming the hetsupa (35) is tilted to some extent, the nozzle (3) rotates and the spring (5)
) is configured so that the pressure bonding disk (33) is firmly brought into close contact with the mouth of the container (M) by the elasticity of the nozzle (3), and air can be supplied into the container (M) from the hose connected to the top of the nozzle (3). .

・Dec> The air supplied to the filling air container (M) is constantly blown out from the jet port (32), but the pressure is determined by pasting a label on the container (M). Use enough air to sufficiently resist the external pressure acting on the container (M) and prevent damage to the container (M).

Specifically, it! the material and shape of the container (N4). to determine the appropriate pumping force.

=7- (2) Label pasting: A ram (6) is rotatably installed near the star wheel (1) to the suction 1 for pasting labels using negative pressure.

The suction drum (6) is a cylindrical drum, and has suction holes on its circumferential surface that generate negative pressure.

A label boulder (7) for storing cut labels and a gluing drum (8) for gluing the labels are arranged close to the circumferential surface of the suction drum (6).

The suction drum (6) continues to rotate while generating negative pressure on its circumferential surface, and then approaches the label holder (7) to adsorb the label. On the way, the drum (11I) comes into contact with the drum (8>) to perform gluing. When it comes into contact with the container (N1), the negative pressure is cut off and the label is affixed to the container (M).

In addition to the above-mentioned method, the label can be pasted by any known pasting method, such as a method in which a roll-shaped label is pulled out and cut into predetermined dimensions and fed immediately before pasting.

Next, I will explain the operation.

<A> The supply container (M) of the container approaches the star wheel (1) where it continues to rotate while being guided by the screw drum (4).

The next instantaneous container (Nz+) is held by the locking arm (12), and as the star wheel (1) rotates, the suction drum (6)
Continue moving by pressing in the direction.

At this time, the crimp circle W (33) is located directly above the container (M) and continues to move as the star wheel (1) rotates.

<Port> Start supply of air The container (M) held by the locking arm (12) is moved to the suction drum (
6), the rollers (22) provided on the reciprocating arm (21) start contacting the cam (23) and push down the reciprocating arm (21).

As a result of the reciprocating arm (21) being pushed down, the intermediate arm (24) connected to the free end of the reciprocating arm (21) is lowered.

23- Together with the intermediate arm (24), the crimping disk (33) also descends and comes into contact with the mouth of the container (M).

At this time, the pressure bonding disk (33) contacts the mouth of the container (M) in parallel even if the nozzle (3) descends while tilting.

In addition, even if the container (M) is slightly tilted or the centers of the container (M) and nozzle (3) are slightly misaligned, the nozzle (3) can freely rotate to ensure verticality, so They contact in parallel without any gap between them. (Fig. 4) When the intermediate arm (24) is further pushed down, the container (M)
The pressing force with the mouth of the nozzle increases, and when a certain pressing force is reached, the nozzle (3) does not descend, but only the intermediate arm (24) moves down against the elasticity of the spring (5).

During this time, air is supplied into the container (M) from the outlet (32) until a predetermined internal pressure sufficient to withstand label attachment is reached.

Therefore, the unevenness that had previously appeared on the surface of the container (M) is eliminated by the supply of air, and the surface remains taut and stable.

Further, at this time, the pressing force to push down the container (M) becomes maximum when the intermediate arm (2'4) descends to the lowest position, and its value becomes equal to the elasticity of the spring (5).

The maximum pressing force on the TIIF device (M) can be determined by the spring (5), and the spring (5) can be replaced with a different spring (5) with a different elasticity, or the spring (5) can be replaced without replacing it.
5) Adjust the pressing force by installing a spring holder (not shown) that can be raised and lowered at one end to adjust the overall length.

<C> For label pasting, the m5 suction drum (6) attracts the label to its circumferential surface and continues to rotate.

On the way, the back side of the label is pasted and air is supplied to maintain a predetermined internal pressure and it starts to come into contact with the revolving container (M).

The moment the label comes into contact with the container (M), the negative pressure is cut off and the container (
It is pasted on the surface of M).

While the roller (22) is moving in contact with the cam (23), the crimp disk (33) does not separate from the mouth of the container (M) and maintains a predetermined internal pressure, so there are no wrinkles. Pasting of the label in close contact with the surface progresses.

The roller (22) ceases contact with the cam (23) at the same time that labeling is completed.

The reciprocating arm (21) is released from the contact of the cam (23).
) is raised by the force of a restoring spring or the like installed at the pivot point with the rotating arm (2).

As a result, the crimping disk (33) that was in close contact with the container (M) is separated, and the sealed opening is released, completing the labeling process.

The container (M) on which the label has been pasted is attached to the locking arm (12
) and sent to the next process equipment.

As described above, labels are affixed to the soft containers (M) one after another.

Since the present invention is as explained above, the following effects can be expected.

-12- Kui> Since the nozzle itself is not directly applied to the mouth of the container to supply air, the mouth of the container is simply held down with a freely swingable disk, so if the container is tilted. Even if the center of the nozzle and the container is distorted, the lower surface of the nozzle is tightly closed to the mouth of the container without leaking air, and air can be reliably supplied.

<Mouth> Since the downward movement of the reciprocating arm is not transmitted directly to the nozzle, but is transmitted through the spring, the pressure force against the container can be obtained from this spring.

Therefore, by adjusting the elasticity of this spring, an appropriate pressing force can be adjusted depending on the container.

<C> By configuring the pressure force to be adjustable, it is possible to attach a label to a soft container while preventing the container from deforming or breaking.

2) The structure and mechanism of the device for raising and lowering the crimping disk is simple, making it inexpensive and less likely to break down.

[Brief explanation of the drawing]

Figure 1: An explanatory diagram of the entire device according to the present invention. Figure 2: An explanatory diagram of the arrangement of the rotating arm. Figures 3 and 4: An explanatory diagram of the operating state.

Claims (1)

[Claims] Above the star wheel that transfers containers, a revolving arm that rotates together with the wheel is attached, and on the extension of each revolving arm, a spring ring with adjustable elasticity is attached to pressurize the star wheel. The disk is mounted so that it can be raised and lowered and swung freely, and the lower surface of the pressure disk is pressed against the mouth of the container using the elasticity of the spring, and air is supplied into the container from the air passage opened in the disk to maintain a predetermined internal pressure. How to attach labels to soft containers by maintaining them and attaching labels