JPS5929490B2 - Labeler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a labeler for attaching a label to the outer periphery of a container, and more specifically to a high-speed labeler suitable for attaching large-sized labels.

The labeler transfers the labels stored in the label hopper one by one to the suction drum and stamps the front side, and then transfers the labels to the gluing drum and applies glue to the back side.
Attach to the outer periphery of bottles, etc.

Conventional labelers transfer labels from the label hopper to the suction drum by moving the label hopper toward and away from the suction drum in a reciprocating motion. There is a drawback that the reciprocating movement of the head becomes unsmooth, resulting in a mistake in taking out the label.

In particular, it was considered impossible to increase the speed of a large label, such as a silk label with a length of 250 mm, because the inertia of the label hopper was extremely large.

Other capabilities such as printing, gluing, and label attaching have sufficient speed margins, so the slow speed at which labels are removed from the label hopper increases the speed of the labeler, especially those that use large-sized labels. is inhibiting.

An object of the present invention is to provide a high-speed labeler that is capable of taking out labels from a label hopper at high speed regardless of the size of the label shape.

In order to achieve the above object, the gist of the present invention is as follows:
The label hopper is fixed, and a take-out device and a crimping device with low inertia are installed between the label hopper and the suction drum, and the adsorbent of the take-out device rotates between the side grooves of the label hopper and the suction drum to label the labels. The label is pulled out from the hopper and the roll of the pressure bonding device rotates to press the label against the suction drum, thereby transferring the label from the label hopper to the suction drum at high speed.

The suction and rotation of the take-out device and the rotation of the crimping device are linked to the rotation shaft of the suction drum via a cam mechanism or the like.

The apparatus of the present invention will be explained based on embodiments shown in the drawings.

As shown in Fig. 1, a suction drum 2 is mounted on the top surface of the frame 1 of the labeler, a drum 3 and a rotary magazine 4 are attached to the frame 1 of the labeler.
are lined up and supported for rotation.

Two label hoppers 5, 5' are arranged on the upper surface of the frame 1 at right angles to the suction drum 2, and each label hopper 5, 5'
A take-out device 6, 6' and a pressure bonding device 7 are provided between the suction drum 2 and the suction drum 2.
, 7' as well as valves 8, 8' for controlling the suction action of the extraction device 6, 6'.

A printing device 9 is arranged next to the label hopper 5' around the suction drum 2.

For gluing, a gluing device 10 is disposed on the upper surface of the frame 1 for the drum 3.

Star wheels 11.11 on both sides of rotary magazine 4
' is pivotally supported, and a guide plate 12 is attached to the upper surface.

The inlet of the guide plate 12 is connected to the feed screw 13 and the outlet to the finishing device 14.

The conveyor 15 has a feed screw 13 and a finishing device 14
It passes under the underside and carries in and out workpieces such as bottles.

As shown in FIGS. 2 and 3, a rotating shaft 20 of the suction drum 2 is supported by a bracket 21 fixed to the frame 1, and a drum 22 is detachably fixed to the rotating shaft 20.

Two annular grooves 23 are provided on the side periphery of the drum 22, and a rubber tip 24 is fitted on the outer periphery.

The ring 25 that comes into contact with the bottom surface of the drum 22 is attached to the bracket 2.
1 and its ring 25 as shown by the broken line in FIG.
Two rows of grooves 26 arranged in an arc shape are provided.

One groove 26 corresponds to the arc length from the label hopper 5 of the suction drum 2 to the contact point with the gluing drum 3, and the other groove corresponds to the arc length from the label hopper 5' to the contact point.

A large number of vertical holes 27 are erected at equal arc intervals from the annular lower surface of the drum 22 in contact with the ring 25.

Three suction holes 28 opening from each vertical hole 27 to the outer periphery are provided in the middle and both sides of the annular groove 23.

The groove 26 of the ring 25 is connected to the port 2 provided in the bracket 21.
9 to a pipe 30 leading to a negative pressure source (not shown).

The rotation shaft 31 of the take-out devices 6, 6' is supported by a bracket 32 fixed to the frame 1.

A holder 33 is fixed to a rotating shaft 31, and a pin 34 is set on the holder.

An adsorbent 35 having two fingers 36 is fixed to a pin 34.

When the rotating shaft 31 is at the reference angular position, the fingers 36 are in contact with the labels in the label hoppers 5, 5', and when the rotating shaft 31 is rotated by a predetermined angle from the reference position, the fingers 36 are in contact with the suction drum. The tip part is inserted into the groove 23 of No. 2.

A vertical hole 37 is provided at the base of the suction body 35, and the finger 3 is inserted through the hole.
A suction hole 38 is opened on the surface in contact with the label No. 6.

The vertical hole 37 is connected to a pipe 39 that passes through the valve 8 and leads to a source of negative pressure.

A rotating shaft 40 of the crimping devices 7, 7' is supported by a bracket 41 fixed to the frame 1, and a holder 42 is fixed to the rotating shaft 40.

Place the en 43 on the holder 42 and attach the arbor 4 to the pin.
4 is swingably attached via a lever 45.

Three rolls 46 corresponding to the middle and both sides of the groove 23 on the outer periphery of the vacuum drum 2 are rotatably fitted into the arbor 44.

A spring 47 is interposed between the pin 43 and the arbor 44, and when the rotation shaft 40 rotates by a predetermined angle from a reference angular position, each roll 46 elastically presses the rubber tip 24 on the outer periphery of the suction drum 2.

As shown in FIG. 4, a cam 51 is fixed to the rotating shaft 20,
A follower 52 is provided which engages the cam.

The follower 52 opens and closes the valve 8, which controls the suction action of the extraction device 6.

Similarly, a cam 53 whose phase is slightly behind that of the cam 51 is fixed to the rotating shaft 20, and a follower 54 that engages with the cam 53 is fixed to the rotating shaft 31 of the extraction device 6.

A stopper 55 and a return spring 56 of the follower 54 are fixed to the frame 1, and the follower 54, that is, the rotation shaft 31, rotated by a predetermined angle by the cam 53 immediately returns to its original position.

Similarly, a cam 57 whose phase is delayed from that of the cam 53 is fixed to the rotating shaft 20, and the force of the cam 57 is applied to the follower 58 that engages with the cam 57.
is fixed to the rotating shaft 40 of the crimping device T.

The stopper 59 and return spring 60 of the follower 58 are attached to the frame 1, and the rotation range and return of the disengagement shaft 40 are set in the same manner as the rotation shaft 31.

Cams 51, 53 and 57 are the respective horowanis 52 and 54
．． 58 is moved twice per revolution.

Also, although not shown, cams 51°53.57 and 90'
Three cams with delayed phases are fixed to the rotating shaft 20, and the opening and closing of the valve 8' and the rotation of the take-out device 61 and the crimping device 7' are controlled by
As with the valve 8, the take-out device 6, and the crimping device 7, only the phases are shifted by 90°.

Although not shown, a transmission device is provided to rotate the rotating shaft 20 of the suction drum 2 in conjunction with the drum 3 and rotary magazine 4, so that adjacent ones rotate in opposite directions at the same circumferential speed. let

Next, the labeling method of the labeler of the present invention will be explained.

A large number of labels 16, 16' are packed in the label hoppers 5, 5' in advance, and a negative pressure source such as the suction drum 2 is activated to apply suction to the suction holes 28 and the like.

Then, when the labeler is activated, the workpieces, e.g. bottles, enter the inlet of the guide plate 12 along the feed screw 13 on the conveyor 15.

From there, it is fed into the seat of the rotary magazine 4 by the star wheel 11 and rotates together with the rotary magazine 4.

On the other hand, as the rotating shaft 20 rotates, the cam 51 and follower 5
2 engages to open the valve 8.

As a result, the suction hole 38 of the take-out device 6 performs a suction action, and one end of the label 16 on the front side in the label hopper 5 is attracted to the finger 36 in contact with the back side, leaving a margin at the edge.

Then, the cam 53 and the follower 54 engage, and the ejecting device 6
Since the rotating shaft 31 rotates by a predetermined angle, the finger 36 that has attracted the label 16 moves its tip into the annular groove 2 of the suction drum 2.
3 and take out the label 16 from the label hopper 5.

Subsequently, the cam 57 and the follower 58 are engaged, and the crimping device 7
The rotation shaft 40 of the finger 36 is rotated by a predetermined angle, and the roll 46
The margin of the edge of one end of the label 16 pulled out is elastically pressed onto the side peripheral surface of the suction drum 2.

As a result, as the suction drum 2 rotates, the label 16 receives the suction action of the suction holes 2B on its side peripheral surface and is attached with its surface facing outward.

At the same time, the finger 36' of the take-out device 6' and the roll 46' of the pressure bonding device γ', which are 90 degrees apart from each other, pull out the label 16' from the label hopper 5' and attach it to the side peripheral surface of the suction drum 2.

In FIG. 2, the finger 36 and roll 46 are shown in solid lines before rotation, and the chain lines after rotation are shown, and the fingers 36' and roll 46' are shown in solid lines after rotation.

Since such an action is performed twice per rotation of the rotating shaft 20, four labels are supplied around the suction drum 2. After each label is stamped by the printing device 9 on its surface, it is not pasted. It is inverted and transferred to the drum 3, where the gluing is done by the device 10.
Glue is applied to the back side facing outward.

Then, the label is transferred to the bottle at the contact point between the drum 3 and the rotary magazine 4, and is pasted around the bottle using glue on the back side.

The labeled bottles are placed on a conveyor 15 along a guide plate 12 by means of a star wheel 11'.

The bottles are conveyed out by a conveyor 15 while being subjected to the finishing action of a finishing device 14.

In the labeler of the present invention, the label hopper with large inertia is fixed without moving, and the drawing of the label from the label hopper and delivery to the suction drum is performed by simple rotation of the take-out device and the crimping device, which have small inertia. Compared to the complicated swinging and reciprocating motion of conventional label hoppers with large inertia, the label withdrawal speed can be significantly increased regardless of the shape and size of the label.

Furthermore, as shown in the example, if two label hoppers are used and four labels are fed per rotation of the suction drum, large labels with a length of 250 mm can be easily fed at a high speed of more than 300 sheets per minute. can.

Before rotation, the fingers of the suction body are in contact with the labels placed face down in the label hopper, and after rotation, they enter the grooves on the side circumferential surface of the suction drum and stop suction.

Furthermore, since the finger returns after the rear end of the label that has been pulled out has passed, the label can be taken out smoothly by the adsorbent and does not cause any trouble to the label.

The roll that presses the label against the suction drum rotates on its own axis and is divided so as not to apply pressure to the annular groove, so that the label is placed along the suction drum in the correct orientation.

The labeler of the embodiment has two label hoppers, but depending on conditions, the number of label hoppers can be one or three or more.

The number of fingers of the suction body of the take-out device and the number of annular grooves of the suction drum are not limited to two, and it is also possible to provide - or three or more.

As described above, the labeler of the present invention can deliver labels from the label hopper to the suction drum at high speed regardless of the size of the label shape, so it has excellent high-speed performance.

Furthermore, it is no exaggeration to say that the labeler of the present invention has made it possible for the first time to increase the speed of attaching large labels.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a labeler according to an embodiment of the present invention, FIG. 2 is a top view of essential parts of the labeler in FIG. 1, and FIG.
- A cross-sectional view taken along line A, line B-B, and line C-C, and FIG. 4 is a schematic diagram functionally showing the engaged state of the cam.

Claims (1)

[Scope of Claims] 1. A take-out device and a crimping device are disposed between one or more label hoppers fixed to a frame and a rotatably supported suction drum, and the take-out device and the crimping device are connected to the suction drum. A device that rotates intermittently in conjunction with the drum is provided, an adsorption body that reciprocates between the label hopper and the circumferential annular groove on the suction drum side by the take-out device and its rotation; A roll that elastically presses the circumferential surface of the suction drum side by movement is pivotally mounted, and a rotation shaft of the take-out device bearing on the frame is engaged with the rotation shaft of the suction drum by a cam so that the rotation shaft can be rotated to a predetermined angle and returned to the original position. A suction body having fingers that can enter the circumferential annular groove on the side of the suction drum is attached to the rotating shaft, and a suction hole provided in the finger is connected to a negative pressure source via a valve that is linked to the rotation of the suction drum. When the suction body is on the label hopper side, the finger is brought into close contact with one end of the label so that a margin remains at the edge of the front label in the label hopper, and the suction body is thereby When moving to the drum side, the finger pulls out one end of the front label and applies the margin portion to the side peripheral surface of the suction drum, and the crimping device roll presses the margin portion against the side surface of the suction drum, The labeler 0 is characterized in that the suction drum rotates to pull out the front label from the hopper. 2 The rotation shaft of the suction drum and the cam are engaged so that the rotation shaft of the crimping device bearing on the frame can be rotated to a predetermined angle and returned to the original position. a swing shaft is fixed to the rotation shaft, a roll shaft is swingably mounted, a spring is interposed between the swing shaft and the roll, and the roll shaft is pressurized in one direction; 2. The labeler according to claim 1, wherein a plurality of rolls are fitted onto the roll shaft so as to contact a portion other than the annular groove on the side surface of the suction drum. 3. The labeler according to claim 1 or 2, characterized in that a plurality of annular grooves are provided on the side circumferential surface of the suction drum, and the same number of fingers as the annular grooves are provided on the suction body.