JPH0451419B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a labeling machine for pasting a label on the outer surface of a container.

[Conventional technology]

2. Description of the Related Art A labeling machine that presses and adheres a label held by a label holding member provided on the outer periphery of a rotating body to the outer surface of a container being conveyed by a conveyor has been generally known.

If the shape of the container to which the label is pasted by the above-mentioned label pasting machine is a rounded flat shape such as a detergent container, the label is transferred from the label holding member to the container that is conveyed in the same direction. In some cases, the tip of the label, that is, the portion adhered to the front side in the direction of travel of the container, did not reach the container reliably.

Conventionally, when feeding containers, methods such as changing the orientation of the container using a screw or guide, or making the center part of the label holding member an elastic body to increase the amount of interference between the holding member and the container have been taken. It had been taken.

[Problem that the invention seeks to solve]

However, even if the above methods are used,
If the container has a large roundness, the tip of the label cannot be reliably adhered to the container, resulting in the tip of the label being turned over or broken during the next wiping process.

The present invention has been made to eliminate the above-mentioned drawbacks, and provides a labeling machine that can reliably adhere labels to any deformed container.

[Means for solving problems]

In order to achieve the above object, in the present invention,
A label pasting machine comprising a rotating body and a label holding member provided on the outer peripheral surface of the rotating body, the label being held by the label holding member and having glue attached thereto is brought into contact with and adhered to a conveyed container. The label holding member is supported by a fulcrum shaft disposed parallel to the axis of the rotating body on the rear side in the rotating direction of the rotating body, and the label holding member is conveyed in the same direction as the rotating direction. When it comes into contact with a container,
The label holding member has a swinging biasing means that swings outward in the radial direction to adhere the tip of the held label to the container, and a vacuum plate is provided on the surface of the label holding member and is movable back and forth at each corner thereof. It is characterized by being able to support a bullet.

[Effect]

In the labeling machine according to the present invention, by swinging the label holding member when pressing the label onto the container, the tip of the label is reliably adhered to the container.
Subsequently, the vacuum plate elastically supported on the surface of the label holding member follows the surface shape of the container well and can reliably adhere the entire label.

〔Example〕

The present invention will be explained below with reference to illustrated embodiments. FIG. 2 is a plan view of a labeling machine according to an embodiment of the present invention. In the figure, 2 is a label magazine that accommodates a large number of labels, 4 is a delivery roller that picks up and takes out labels one by one from the label magazine, and 6 is a label holding member provided at equal intervals on the outer peripheral surface of the delivery roller 4. 8 is a gumming unit that applies glue to the back of the label held by the label holding member; 10 supports the back of the container when attaching the label to the container; This is a pressure roller, which is conveyed by a conveyor 12, and after pasting labels on containers positioned at predetermined intervals by a screw 14, the labels are pressed by a downstream wiping roller 16 and an afterpad 18 to securely adhere the labels. It's becoming like that.

Note that, on the opposite side of the conveyor 12, a device having the same configuration is arranged for attaching a label to the back surface of the same container, and this device is indicated by the same reference numeral with a suffix a attached thereto.

Next, the structure of the rotating drum 6 will be explained in detail with reference to FIGS. 1 to 4. Fig. 1 is a plan view with a part of the rotating drum in section, Fig. 3 is a longitudinal sectional view,
FIG. 4 is a longitudinal sectional view of the label holding member. A rotating disk 24 is fixed to the upper part of a vertical shaft 22 rotatably supported by a base 20, and on this disk 24,
Six label holding members 26 are provided at equal intervals in the circumferential direction. A gear 28 is fixed below the base 20 of the vertical shaft 22.
The driving force is transmitted through the rotating disk 24.
And the label holding member 26 rotates integrally with the vertical shaft 22.

The label holding member 26 extends through a holder 30 having a substantially U-shaped cross section and a cylindrical portion 30b that is connected to the side of the holder 30 (the rear side in the rotational direction of the drum 6) via an arm 30a. A fulcrum shaft 32 fixed on the rotating disk 24 and swingably supporting the holder 30
, a vacuum plate support 34 consisting of a columnar section 34a fitted into a recess 30c of the holder 30 and a plate section 34b on the front surface thereof; a cam follower 36 mounted on the columnar section 34a and engaged with a cam to be described later; Recess 30c of holder 30
A horizontal shaft 37 that penetrates the columnar part 34a of the vacuum plate support 34 fitted inside and is supported by the holder 30, and is supported by four springs 38 on the front surface of the plate part 34b of the support 34 at the top, bottom, left and right. It is equipped with a vacuum plate 40.
Front surface 40 of these six vacuum plates 40
a occupy a portion of the same circular arc centered on the vertical axis 22.

A cam plate 44 is disposed above the rotating drum 6 via a column 42 fixed on the base 20. On the lower surface of this cam plate 44,
A substantially arc-shaped grooved cam 44a is formed, and the cam follower 36 on the vacuum plate support 34 fits into this grooved cam 44a, and moves within the grooved cam 44a as the rotating drum 6 rotates. do. The grooved cam 44a has a locus that bulges radially outward at a position facing the conveyor 12, and when the label holding member 26 passes through this portion of the grooved cam 44a, the holder 30, vacuum plate support 34 and vacuum plate 40
are integrally swung outward in the radial direction about the fulcrum shaft 32.

On the base 20 around the vertical axis 22 is a cylinder 4
6 is fixed, and a second
A cylindrical body 48 is arranged, and two upper and lower discs 50,5
It is fixed by 2. A slide block 54 is provided on the lower surface of the rotating disk 24 of the rotating drum 6.
is fixed, and when the rotating drum 6 rotates,
A slide block 54 slides on a disk 50 above both cylinders 46,48. Slide block 54
Vacuum passages that can communicate with each other are formed in the upper disk 50, and these vacuum passages are connected to the vacuum chamber 5 between the two cylinder bodies 46 and 48.
6 to a vacuum source, and is also connected to the vacuum plate 40 via a passage 58 and the like.

The operation of the labeling machine having the above configuration will be explained. Before one of the containers conveyed on the conveyor 12 at predetermined intervals reaches the front of the rotating drum 6, the label holding member 26 corresponding to this container is
The label taken out by the delivery roller 4 from the label magazine 2 is adsorbed and received by a vacuum plate 40 connected to a vacuum source, and the back side of the held label is coated with glue by the gumming unit 8. is added.

As the rotary drum 6 rotates, the cam follower 36 moves while being guided by the arc-shaped portion of the grooved cam 44a, and immediately before the label holding member 26 reaches the front of the corresponding container on the conveyor 12, the cam follower 36 moves along the grooved cam 44.
is moved radially outward along the expansion part of a.
Since the rear side in the rotational direction of the drum 6 is supported by the fulcrum shaft 32 and is swingable, the label holding member 26 swings the front side in the rotational direction outward (to the position shown by the imaginary line in FIG. 1). . As a result, the tip of the label adsorbed to the vacuum plate 40 is pushed out toward the container and is reliably adhered to the container. Thereafter, as the container is advanced by the conveyor 12, the drum 6 rotates and the entire label is adhered to the container. However, in the configuration in which the label holding member 26 is made swingable in the radial direction, it is possible to reliably adhere the tip of the label to the container, and the entire label is then adhered by the vacuum plate 40.
This is done by having the label supported by four springs 38 so that it can move back and forth, and making the label approximately follow the surface shape of the container.

With the above configuration, the leading edge of the label can be delivered reliably, and the entire label can then be properly bonded, thereby eliminating the possibility that the label will turn over, fold, etc. in the next wiping process. Therefore, there is no need to provide an auxiliary mechanism to prevent the label from turning over, folding, etc. during wiping.

In addition, in the above embodiment, the vacuum plate 4
0 and its support body 34 are supported by the holder 30 by the horizontal shaft 37, it is also possible to rotate the vacuum plate 40 back and forth,
For a flat container with a tapered label attachment surface, the tip of the label can be reliably adhered by swinging the vacuum plate 40 in the radial direction and also rotating it back and forth.
In this case, the back and forth rotation of the vacuum plate 40 may be performed by the cam 44a, or another cam may be provided.

〔Effect of the invention〕

As described above, according to the present invention, the tip of the label can be reliably adhered to the container, and the entire label can be adhered well following the container surface shape. This can prevent the tip of the label from turning over or folding.

[Brief explanation of the drawing]

1 to 4 show a labeling machine according to an embodiment of the present invention, in which FIG. 1 is a plan view with a part of the rotating drum in cross section, FIG. 2 is a plan view showing the whole, FIG. 3 is a longitudinal sectional view, and FIG. 4 is a longitudinal sectional view of the label holding member. 6... Rotating body (rotating drum), 26... Label holding member, 32... Fulcrum shaft.

Claims (1)

[Claims] 1 A label pasting system comprising a rotating body and a label holding member provided on the outer peripheral surface of the rotating body, in which a label held by the label holding member and glued thereon is brought into contact with and adhered to a container being transported. In the machine, the label holding member is supported by a fulcrum shaft arranged parallel to the axis of the rotating body on the rear side in the rotating direction of the rotating body, and the label holding member is conveyed in the same direction as the rotating direction. a rocking biasing means that swings radially outward to adhere the tip of the held label to the container when it comes into contact with the container;
A labeling machine characterized in that a vacuum plate is elastically supported on the surface of the label holding member at each corner thereof so as to be movable back and forth.