JPS581635A - Labelling machine - 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 apparatus of the present invention continuously feeds a roll label (1), separates the labels one by one, holds them on a drum (9), and separates them into containers ( 10) Labels are attached to each sheet one by one.

This roll label (1) is made by printing a label pattern continuously at equal intervals on a strip of paper, and further printing a position detection mark (12) at a fixed position relative to the pattern, or by printing a mount (14 This is a label obtained by winding up a roll of labels (11) pasted at regular intervals on top of the label (11).

Next, the functions of each part of this device will be explained in detail.

(1) Label feeding mechanism section This mechanism guides the rotatable disc (4) on which the roll label (1) is set, the guide roller (42), and the roll label (1) that guides the rolled label (1). It consists of a tension arm (41) that controls the tension that changes as the roll label (1) is pulled out.
) is set on the disk (4), and this is a mechanism unit that feeds out the roll label (1) in accordance with the feeding of the label feeding mechanism unit. An example is shown in FIG.

(2) Label feeding mechanism section This mechanism has a roller (21) assembled to the driven shaft (22) of the differential gear mechanism (2), and the roll label (1) is attached to the roller (21) using a pressure roller (24). Either the roller (21) is crimped, or a negative pressure suction mechanism is provided on the roller (21) to suck and send out the roll label (1), and the driven shaft (22) is connected to the rotation of the driving shaft (23) of the differential gear mechanism (2). ) A gear (26) that drives a gear (25) attached to a part of the differential gear mechanism (2) that can change the rotation speed of the gear (26), and a stepping motor (3) that rotates the gear (26).
).

FIG. 2 shows a negative pressure valve (28) with a groove for suppressing the effect of negative pressure, which is incorporated under the roller (21).

FIG. 3 shows an example of the structure of the label feeding mechanism section.

In addition, it is comprised of a phototube (13) that detects the position detection mark (12) of the label pattern on the roll label (1) and a control section that periodically generates pulses.

This label feeding mechanism uses a phototube (13) to detect position detection marks (12) printed at equal intervals on a roll label (1), and corrects the delay in the passing timing by rotating a stepping motor (3). It is a mechanism.

(3) Label separation mechanism section This mechanism cuts or punches the roll label (1) fed by the label feeding mechanism at regular intervals, and also separates the label (11) from the backing paper if the roll label (1) is a pressure-sensitive type.
This is a device that separates roll-shaped labels into individual sheets.

The cutting mechanism consists of a rotating blade and a fixed blade. Once per cycle, the rotating rotating blade and fixed blade cut the roll label (1
) to cut. FIG. 4 shows the cutting mechanism of the label (11).

The punching mechanism is composed of a set of rotary die cutters and punches out the roll label (1) once per cycle.

The peeling mechanism uses a guide (81) to bend the backing paper of a pressure-sensitive roll label (1) into a V-shape while feeding the backing paper (14).
) and hold the label (11) on the drum (9).

FIG. 5 shows an example of a peeling mechanism.

(4) Label pasting mechanism section This mechanism consists of a cylindrical drum (9) that attracts the label (11) with negative pressure and rotates.

In the case of the adhesive type roll label (1), as shown in Fig. 1, the adhesive mechanism (5) is installed in the label passage part on the outer periphery of the drum, and the label (11) separated from the roll label (1) is
) is attracted and held by the drum (9) by negative pressure, and the drum (9)
It is carried to the gluing part by the rotation of the gluing mechanism (
5) is glued.

(5) Container conveyance mechanism section This mechanism separates the conveyor (6) carrying the containers (10) and the containers (10) that are continuously sent on the conveyor at regular intervals and sends them in front of the drum (9). It consists of a spiral screw guide (61) and a finishing part (63) for pressing and finishing the label (11) onto the container (10) after pasting.

In addition, a limit switch (62) is attached to the spiral screw guide (61) to detect the passage of containers (10) and operate the label feeding mechanism to remove the number of containers (10) that have passed. It functions to send out the label (11).

The present invention is a labeling machine constructed as described above.Next, the function of the label feeding mechanism, which is a feature of this labeling machine, will be explained in detail. Figure 3 shows its structure.

This mechanism feeds the roll label (1) to the separation mechanism once per cycle to separate one label (11).
), but the roll label (1) must be separated in a state that matches the label pattern. However, in the case of the adhesive type, there is a slight pitch error in the spacing between the images on the label that occurs during printing, and in the case of the pressure-sensitive type, there is a slight pitch error in the spacing between each label on the mount (14). .

Therefore, if the roll label (1) is always fed into the separation mechanism at a constant feed rate, the pitch error will gradually accumulate. Therefore, in the case of the adhesive type, the cutting position and the position of the stamping board with respect to the design of the label gradually change, making it impossible to obtain labels (11) with the same design. In addition, in the case of pressure-sensitive type roll labels (1), the timing of peeling off from the mount and the drum (
9) The timing of adsorption to 9) will be incorrect and trouble will occur. Therefore, the label feeding mechanism must have a feeding amount correction mechanism that has the function of feeding the label while adjusting the feeding amount in accordance with the pitch of the image on the label.

The labeling machine of the present invention incorporates a mechanism that continuously feeds the roll label (1) and adjusts the amount of feed by adjusting the amount of rotation of the stepping motor (3) in accordance with the delay in the design.

Next, the operation of the stepping motor (3) will be explained. FIG. 6 shows the pulse generator (7).

This is a disk (72) with several holes that rotate at regular intervals.
It consists of a phototube (71) that passes light through the hole and detects it, and emits a pulse like P1 in FIG. 7 at regular intervals. The roll label (1) is set so that the position detection mark (12) of the picture on the roll label (1) passes in front of the phototube (13) and is detected within the pulse transmission time. Further, the outer periphery of the roller (21) of the feeding mechanism is set to a diameter such that the amount of feeding in one cycle is slightly less than the length of one label. The stepping motor (3) starts stepping by a signal from the pulse generator (7).

This stepping of the stepping motor (3) causes the gear (26) to rotate the gear (25) in a direction in which the rotation of the driven shaft (22) increases. Therefore, the driven shaft (22)
The rotation speed of the label increases slightly relative to the drive from the driving shaft (23), and the amount of feed of the roll label (1) increases. Next, the photocell (
13) detects the position detection mark (12), the stepping motor (3) is stopped by the signal. Therefore, if the passage of the position detection mark (12) is delayed, the stepping amount increases and the speed increase amount also increases. Therefore, by increasing the speed of the roller (21), the delay in passing the position detection mark (12) is corrected by the next cycle.

Figure 7 shows a pulse timing chart, P1 is a pulse sent from a pulse oscillator, and P2 is a photocell (13
), P3 indicates the pulse signal sent to the stepping motor (3).

Repeat the above operation for each cycle and roll label (1
) to correct the feed amount.

The features of this mechanism are that it combines continuous feed with an intermittent correction mechanism that accurately determines the amount of correction, and that the correction mechanism is equipped with a stepping motor (3) that has a fast response speed and an accurate amount of rotation. By combining the two, it is possible to correct the feed amount more quickly and accurately than with conventional label feeding mechanisms, and when cutting the roll label (1), it is possible to greatly improve the accuracy of the cutting position relative to the label pattern. Therefore, the labeling machine that is composed of the label feeding section, label feeding mechanism section, label separating mechanism section, label pasting mechanism section, and container transport mechanism section described above is a labeling machine that is equipped with a high-speed and highly accurate label correction mechanism. .

[Brief explanation of the drawing]

FIG. 1 is a plan view of the labeling machine of the present invention, and FIG. 2 is a perspective view of a roller unit that feeds out a roll label by negative pressure. FIG. 3 is a sectional view of the label feeding mechanism. FIG. 4 is a perspective view of the label cutting mechanism. FIG. 5 is a perspective view of the label peeling mechanism. FIG. 6 is a perspective view of the pulse generator. FIG. 7 is a timing chart of pulse signals. 1 is a roll label, 2 is a differential gear mechanism, 21 is a roller, 22 is a driven shaft, 23 is a driving shaft, 24 is a pressure roller,
3 is a stepping motor, 5 is a gluing mechanism, 6 is a conveyor, 63 is a finishing section, 61 is a screw guide, 62 is a limit switch, 7 is a pulse transmitter 8 is a cutting mechanism, 9 is a drum, 10 is a container 11 is a label , 12 is a position detection mark, 13 is a phototube, 14 is a mount

Claims (1)

[Claims] A roller (21) is attached to the label feeding unit that feeds out the roll label (1) and the driven shaft (22) of the differential gear mechanism (2).
Assemble the roll label (1) to the roller (21).
is crimped or adsorbed with negative pressure and sent out along with the rotation of the roller (21), and is further attached to the driving shaft (
A label consisting of a stepping motor (3) attached to apply rotation to a part of a differential gear mechanism (2) that is capable of changing the rotational speed of a driven shaft (22) with respect to the rotation of 23). A feeding mechanism section, a separating mechanism section that separates the roll label (1) one by one, and a separating mechanism section that separates the rolled label (1) into sheets.
A labeling machine comprising a label sticking mechanism section that holds and rotates a container (1) on a drum (9), and a transport mechanism section that transports a container (10) and feeds it in synchronization with the sticking mechanism section.