JPS5890030A - Label extractor - 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 allows one label to be removed from a magazine in which the labels are stacked.
This invention relates to a label take-out device that takes out labels one by one.

Conventional general label take-out devices are equipped with a pickup roller that adsorbs labels using vacuum force or the adhesive force of glue, and a label magazine that stores a large number of labels in a stack. In order to smoothly perform the suction and take-out operation, the pickup roller is oscillated in synchronization with the rotation of the pickup roller. However, in this type of label take-out device, the label magazine oscillates, which not only makes it cumbersome to replenish labels into the label magazine, but also makes automatic replenishment difficult. Because the magazine was oscillated, there was a certain limit to how high the speed could be increased.

For this reason, label retrieval devices using the above-mentioned label magazine as a fixed magazine have been proposed in an effort to improve the above-mentioned drawbacks, but on the other hand, conventional devices generally have complicated configurations and are expensive. Ta.

In view of these points, the present invention provides a label take-out device that is extremely simple and inexpensive even when using a fixed magazine, by simply making the pickup roller movable and providing a drive means such as a cam for reciprocating the pick-up roller. It provides:

The invention will now be described with reference to an illustrative embodiment. In FIG. 1, containers (not shown) are conveyed by a conveyor (1) and are synchronized to an applicator drum (3) by a timing screw (2). On the other hand, the fixed magazine (4
) is multiplied within! The stored labels (L) are taken out one by one from the fixed magazine (4) by a pickup roller (5) and delivered to the pasting drum (3) via the intermediate drum (6). And this pasting drum (
Glue is applied to the back side of the label delivered to 3) by a gluing roller (7) during conveyance, and then at the contact point between the conveyor (1) and the pasting drum (3),
The label is wrapped around the surface of the container that has been conveyed in synchronization with the pasting drum (3) by the adhesive force of the glue. The container with the label wrapped around it is conveyed while being rolled between the guide (8) and a pad (9) such as a sponge, and this movement allows the label to be completely affixed to the outer periphery of the container. .

However, in Fig. 2, the intermediate drum (6) is fixed to a vertical rotating shaft (11) supported by a fixed frame (10), and this fixed frame (iu7) has a rotating shaft (1 piece). A swing frame (12) rotatable around the center is supported.

A second rotating shaft (13) disposed parallel to the rotating shaft (11) is supported on the swing frame (12), and the pickup roller (5) is mounted on the second rotating shaft (13). At the same time, both rotating shafts (11) and (13) are interlocked with each other by gears (14) and (15) respectively attached. Gear (14) attached to the above rotating shaft (11)
is meshed with a main gear (not shown) that is integrated with the pasting drum (3), and is linked to a drive source (not shown) via this main gear. Therefore, the above-mentioned sticking drum (3), intermediate drum (6), and pickup roller (5) can rotate in synchronization with each other, and the pickup roller (5) responds to the swinging of the swinging frame (12). intermediate drum (
6) can be swung around.

As shown in FIG. 1, the swing frame (12) has two protrusions Mo (12a), (12b) li [thio P], and a cam follower (16) is provided at the tip of one of the protrusions (12a). At the same time, the tip of the other protrusion (12b) and the fixed frame (
A bullet (17) is loaded between it and the bullet (17).
) is used to rotate the swing frame (12) counterclockwise in FIG. 1, so that the cam follower (16) is always in elastic contact with the outer circumferential cam surface of the cam (18). As shown in FIG. 2, this cam (18) is fixed to a third rotating shaft (19) supported by a fixed frame (10), and a gear (2 ) to the above gear (14)
By meshing with them, it is possible to rotate in synchronization with them.

Further, suction holes (5a) and (6a) for suctioning the label (L) are opened in the pickup roller (5) and the intermediate drum (6), respectively, and each suction hole (5a)
, (6a) are connected to a negative pressure source (not shown) via vacuum passages (21°) and (22), respectively. At this time,
An arc-shaped passage is provided in the control plates (23) and (24) provided in the middle of each vacuum passage (21) and (22) and fixed to the swing frame (12) and fixed frame (lO), respectively. The suction holes (5a) and (6a) of the pick-up roller (5) and the intermediate drum (6) absorb the negative pressure only within a predetermined rotation range of the roller and the drum (58 (6)). It is now possible to communicate with the source.

When asked about the operation of the above configuration, focusing on Figures 3(a) to (e), in Figure 3+8), the cam follower (
16) is in elastic contact with the large diameter portion (18a) of the cam Cl8), the pickup roller (5) is stored in a stack in the fixed magazine (4) and held by the engagement claw (4a). It is located slightly away from the label (L) in the front row.

From this state, as shown in FIG. 3(b), when the cam follower (16) rolls into the recess (18b) of the cam (18), the swing frame (12) moves accordingly. The pickup roller (5) rotates counterclockwise, and the outer peripheral surface of the pickup roller (5) comes close to the − side surface of the label (L) in the front row.

At the same time, the suction hole (5) of the pickup roller (5)
In a), the swing frame (12) is rotated at a higher rotation speed by being rocked counterclockwise than the rotation speed at which the swing frame (12) was rotated when it was stationary. and rapidly come to face the label (L) from the front. And the suction hole (5a) faces the label (L)!
Then, it is communicated with a negative pressure source through the passage of the control plate (23), and the negative side surface of the label (L) is adsorbed.

Next, as the cam follower (16) is removed from the recess (+8b) of the cam (18), the swing frame (12) is rotated clockwise as shown in FIG. 3(e). When the pickup roller (5) is moved, the pickup roller (5) is swung in the direction away from the engaging claw (4a) of the fixed magazine (4) while adsorbing the label (L), and the part of the label and the engaging claw are moved. (4a)
cancel the bond with At this time, when the swinging frame (12) is rotated clockwise with the gear (14) of the intermediate roller (6) fixed, the suction hole (5a) of the label (L) will open the gear (15). As can be understood from the fact that the pickup roller (5) is rotated clockwise through the swing frame (12), there is a clockwise rotation due to the rotation of the swing frame (12) and a counterclockwise rotation due to the gear (14). At the same time, label (L)
is maintained facing the paper surface. As a result, the negative side portion of the label (L) can be smoothly pulled out from the engaging claw (4a).

When the cam follower (16) is removed from the recess (18b), the label (L) is completely pulled out from the fixed magazine (4) by the counterclockwise rotation of the pickup roller (5), and the label (L) is completely pulled out from the intermediate drum (6). will be delivered to.

At this time, the suction hole (5a) on the pickup roller (5) side
The communication between the intermediate drum (6) and the negative pressure source is cut off, and the suction hole (6a) of the intermediate drum (6) and the negative pressure source are communicated with each other, so that the label (L) can be delivered smoothly. Thereafter, the label (L) will be affixed to the container via the affixing drum (3) as described above.

In the above embodiment, the pickup roller (5) is made swingable around the center of rotation of the intermediate drum (6), and the swing moves the pickup roller (6) to the adsorption position (third position) where the label (L) is adsorbed. The position shown in FIG. 3(b)) and the label delivery position to the intermediate drum (6) which is distant from this suction position (positions shown in FIGS. 3(a) and (e)) are approximate. Alternatively, a linear reciprocating movement between the suction position and the label delivery position may be used, and in this case, a cylinder device, a solenoid, or the like can be used as the driving means. In addition, if necessary, the above intermediate drum (
6) may be omitted and the label (L) may be delivered directly from the pickup roller (5) to the sticking drum (3), and the adhesive force of the glue may be used in addition to the vacuum pressure as the suction force. I can do it.

As described above, in the present invention, with a simple configuration in which the pickup roller is movable and a driving means for moving the pick-up roller is provided, it is possible to obtain the effect that labels can be smoothly taken out from a fixed magazine.

[Brief explanation of drawings]

Fig. 1 is a plan view showing one embodiment of the present invention, and Fig. 2 is a plan view showing an embodiment of the present invention.
FIG. 3 is a cross-sectional view taken along the line ■-■ in the figure, and is a schematic diagram for questioning the operation of the above embodiment, and FIGS. 3(a) to 3(e) show different states, respectively. (3)...Adhesive drum (4)...Fixed magazine (5
)...Pickup roller (6)...Intermediate drum (1)
2)...Swinging frame (!4), (15)...Gear (
16)...Cam follower (18)...Cam (18b)
...Concavity (L)...Label patent applicant Shibuya Kogyo Co., Ltd.

Claims (1)

[Claims] A fixed magazine that stores labels in a stack, a pickup roller that sucks and takes out labels from this fixed magazine,
It is equipped with a drum that rotates in synchronization with this pickup roller and receives the label taken out by the pickup roller,
The pickup roller is provided to be movable between a suction position for sucking labels in a fixed magazine and a label delivery position to the drive base located away from this suction position, and the pickup roller is used to transfer labels to and from the suction position. A label takeout device characterized by being provided with a drive means for moving the label to and from a position.