JPH0339893B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has at least one rotatably or swingably supported take-out member, and a receiving surface of the take-out member for taking out a label from a pile of labels and for taking it out. The stacking label relates to a station for labeling an object, such as a bottle, which can be applied onto the object to be labeled, and which is held by a retaining member that engages the edges thereof.

In known labeling stations of this kind, the removal member is removed from the front part of the stacked label by the adhesion of the adhesive on the receiving surface to which adhesive has been applied beforehand or by the suction action of a suction nozzle arranged on the receiving surface. The label is now removed. In this case, the holding force of the holding element, which is designed as a small hook and which slightly grips the edge of the stack label at its end face, must be eliminated.

In a labeling machine, it is necessary to remove a label from a stack of labels only if the removal member can apply the label onto an object. If one object in a row of consecutive objects to be labeled is missing, this is detected by the monitoring element of the control device and the label magazine containing the stacked labels is moved from the front position to the rear position. I am moved to. In this rearward position the ejection member no longer contacts the end face of the stack, so that the label is
I can't even take it out. To remove the next label, the label magazine must be moved to the forward position again. Because of this forward and backward movement, an interruption time is provided between the two removals. In the case of a labeling station having, for example, three take-off members on a rotating support and a capacity of applying 50,000 labels per hour, the time from the start of one take-out to the start of the next take-out is 1 second. It's only a fraction of that. Since part of this time is required for the actual removal, only the time between the end of one removal and the beginning of the next is left for advancing and retracting the label magazine. . This time varies depending on the model of labeling machine. In each case this time is short for the movement of the label magazine, so that large accelerating forces are exerted on stacked labels loosely inserted into the magazine. This acceleration force due to the inertia of the stack label due to its inertial mass results in the stack label moving around in the magazine. In this case, it is no longer guaranteed that the label can be cleanly removed by rolling the receiving surface of the removal member on the end face of the stacked label.

The basic problem of this invention is the complete removal of labels from stacks in the case of continuous rows of objects such as bottles, even under difficult labeling conditions such as fragile labels and/or high performance. and the provision of a labeling station as described at the outset, which guarantees the abort of removal in the event of omissions in the row of objects.

This problem is solved by the present invention as follows. That is, the labeling station of the present invention has at least one take-out member rotatably or swingably supported, and is a station for applying labels to objects such as bottles. retention that engages the edges of the stacked labels by adhesive action using an adhesive-bearing curved concave receiving surface of said ejection member that rolls over the front side of the stacked labels in the label magazine of the label magazine; In a labeling station from which one label of a stack of labels held by a member can be taken out, in addition to said holding member, the stack of labels is removed from a first position which allows the label to be taken out by a pick-up member. An additional holding member is provided on the front side and is movable and controllable at a second position for capturing the edge of the stacked label, and in the second position, the holding force of the additional holding member against the stacked label is applied to the removal member. A control device is provided for controlling the movement of the additional holding member, and the control device includes a monitoring member for monitoring a row of objects to which labels are attached, and a control device is provided for controlling the movement of the additional holding member. The structure is such that movement control of the additional holding member is performed only when it is confirmed that the object is missing.

In the labeling machine of the invention, labels can be held individually depending on instantaneous operating conditions, such as the presence or absence of one object in a row of objects, so that the label can be transferred onto objects. This label can be easily removed if it is possible to do so, but such removal is prevented if there is no object to attach the label to. Removal of the label by the removal member is prevented by an additional, additionally acting holding element which is also highly active even when the stacked label is stationary. The application of adhesive to the label during the use of an adhesive-coated removal member, which takes place in that case, at least does not interfere with the removal of the label upon subsequent contact of the removal member with the deposited label. The possibility created by the invention of being able to prevent the removal of labels even when the label magazine is stationary has the advantage that drive elements for advancing and retracting the label magazine can be dispensed with. The required mass for the controlled movement of the additional holding element is relatively low. The labeling station according to the invention can therefore be operated with higher performance than known ones. However, a controllable holding element has proven to be advantageous not only when the label magazine is stationary, but also when it is movable. This is because the retaining element prevents the stack from bowing back in the direction of the end face of the stack of labels during a backward movement of the label magazine.
If, according to the configuration of the invention, a slider with a brake is provided on the rear side of the stack, the label stack will not oscillate. The possibility of retracting the label magazine, in conjunction with the controllable holding element, is also utilized if successive omissions are identified in a row of objects. In this way, contact agent is prevented from being applied to the end face of the stacked label with each new contact of the removal member.

According to one aspect of the invention, the additional retaining member is an extrudable pin carried in the guide.
The tip of this pin still captures the edge of the stacked label from above to such an extent that in the retracted position it allows removal of the label. In this configuration, the holding member performs the function of a conventional small hook in the retracted position, and performs a new function in the forward position to prevent removal of the label.

It is also possible to provide other additional holding members in place of this dual-function holding member. This holding element is designed as a pivotable lever which only under control captures the edge of the stack label from above.

If the labeling station is provided with a removal member having a curved convex receiving surface, which rolls over the front label during removal of the label, the loading of the label is counteracted by the attempted holding member. It can be reduced in the following way when taking out the required amount. This means that the stacking front surface is reduced by being able to be pushed back beyond the nominal position for label removal by means of a displaceable pin or a rotatable lever, at least at the front edge of the rolling movement of the removal member. Ru. In this case, the holding element serves to ensure that the stack is compacted and the removal member still contacts the stacked label, thereby preventing any movement of the label itself. The very front edge, which is most heavily loaded, is thereby protected. In addition, if the rear edge side holding member and, in some cases, the upper and lower holding members can also be controlled,
The entire front side of the stack label will be pushed back to a position where the removal member no longer contacts the stack front side. The extraction force becomes zero there. In practice, this can be done either with a lever, as described above, or with a pin.
In this case, either the direction of delivery of the pin has a motion component in the direction of deposition, or the pin is of conical design.

Rolls on the front label when taking out the label,
If the labeling station is equipped with a take-off member with a curved convex receiving surface, controllable holding members are provided at the leading and trailing edges of the pile with respect to rolling movement, and the front and rear edges of the stack are provided with respect to the rolling movement. It is advantageous for the performance of the labeling station to be achieved if the holding element can be controlled independently of the rear holding element provided at the trailing edge. With a labeling station constructed in this way, a considerable amount of time can be spent controlling the holding elements. Therefore, the holding member disposed on the trailing edge is
If the trailing edge of the receiving surface of the removal element releases this holding element, control has already been achieved and the rolling process has not yet ended. This means that two extraction members can act along the stack label at the same time. One of the two ejection members takes out one label, and ejection by the next ejection member is prevented by a pre-controlled holding member. Such a case is particularly likely when a number of take-off members are closely arranged on the support and relatively long labels have to be handled.

However, the time spent controlling the removal element can also be increased by a particularly short rolling time of the removal element along the stack. Short rolling times are achieved, for example, by labeling stations in which the direction of rotation and oscillation of the removal member during rolling along the stacked label is opposite to the rotation of the support and the capture cylinder. With such a labeling station, a high performance can be achieved without having to place the take-off elements as close together as they are attached to the support, and, in addition, longer breaks between individual take-off operations can be achieved due to the controlled movements.

This long rest period is also important when combining a controllable holding member with an advancing and retracting magazine. It is also advantageous if the forward and backward loading of the magazine is combined with a controllable holding element. In such a case, the control device only controls the drive for the backward movement of the magazine after controlling the holding element.

The oscillation of the stacked labels in the magazine as a result of the forward and backward movement of the magazine can be avoided by a controllable tightening of the slider in the case of a slider supporting the stacked label from the rear side, which is pressurized in the direction of the open end face of the stacked label. This can be prevented if means, fasteners or similar devices are provided. These controls act on the magazine before it reaches the rear position for movement from the front position to the rear position, and before it moves from the rear position for movement from the rear position to the front position. Let it happen. In that case, the control device must release the clamping means, stops or the like only after a delay of at least the same amount of time as the time for movement of the magazine. That is, when the magazine is in the rear position,
If you need to insert a new label,
The clamping means or stop must be released and a new label placed into the magazine.

In particular, a slider serving as a stop is provided as a member to protect against movement. This stop captures a label in the magazine from behind with its face opposite the released end and moves with the label in the direction of the released end, in which case the stop is held in the magazine by means of a controllable detent. Can be stopped. Such a stop supports a stack of labels in the magazine. If the magazine is moved from the front position to the rear position and is suddenly stopped when it reaches the rear position,
The label cannot continue its motion based on its inertia. Conversely, the movement of the magazine from the rear position to the front position is transmitted directly to the label. In this case too, the label cannot remain in that position, but is immediately advanced.

Pressure on the label in the direction of the open front end of the magazine is carried out by means of a slider which captures the label from the rear on the side opposite the normally open front end. According to the configuration of the invention, the slider simultaneously becomes a stopper.

The detent can be stopped on a rail extending along and supported by the magazine. A friction type detent is suitable for the detent. Such a base stopper can fix the stopper steplessly in the longitudinal direction of the magazine. In order to easily switch the stopper in the magazine, the stopper is rotatable about an axis parallel to the longitudinal axis of the magazine and/or movable transversely to the longitudinal axis of the magazine. You can keep it. The stop can in particular be fastened to a detent. Transverse movement with respect to the longitudinal axis of the magazine is necessary on the upper side of the magazine, for example when magazines are stacked one on top of the other, and the lower magazine is not given sufficient free space. .

A piston-cylinder mechanism is suitable as the drive device for the magazine and the detent stop.

A diagram showing an example will be described in detail.

The labeling station shown in FIG. 1 consists of a rotating support 1 with three rotating or oscillating take-off members 2, 3, 4, a rotating adhesive roller 5, a label magazine 6 and a rotating capture cylinder 7. It is configured. The drive and geometry of such labeling stations are known (German Published Application No. 2435568, JP-A-58
−34332).

In such a labeling station, the take-out members 2, 3, 4 transfer their storage surfaces to various stations, namely an adhesive roller 5 where the take-out member is applied with adhesive, a magazine 6 where the take-out member takes out a single label, etc. The front side of the received stacked labels is rolled against each of the capture cylinders 7 from which the removed labels are provided by the removal member. When the labels are removed, the magazine 6 is in the forward controlled position shown. However, when the take-off member does not have to take out a label, the magazine 6 is controlled backwards, so that the receiving surfaces of the take-off members 2-4 cannot roll along the front of the stack. This prevents label removal.

The illustrated magazine 6 consists of two cases 8, 9 for the torso label and the chest label, arranged one above the other. These cases 8 and 9
Since the top and back are open, labels can be placed over the top or back. Case 8,
9 has label guides 10 and 11 with inwardly directed hooks on the front end surface. Said hook prevents the accumulation of labels. However, the label can be taken out only by the taking-out members 2 to 4. In order to feed the labels forward, a plate-like slider 12 is inserted between the labels in the cases 8 and 9, and this slider is in each case pushed forward by means of a tensioning means 14 guided via deflection rolls 13. It is pulled in the direction of the end face. The tension is provided by take-up rolls 15, 16 rotated by spiral springs.

The two cases 8 and 9 are slidably attached to the rail 19.
It is supported by one common support 17 which is supported above. The rails 19 are supported by brackets 20 on the machine frame. The bracket 20 furthermore supports a drive 21, which is designed as a piston-cylinder mechanism. The moving piston rod 22 of this drive is connected to the support 17. The drive device 21, which is a piston cylinder mechanism, can be operated in both directions and is provided with a valve 23 for controlling the drive device 21. By this drive device, the magazine 6,
The cases 8 and 9 can be guided on rails 19 and controlled forward and backward.

Each slider 12 of the two cases 8, 9 is resistant to bending, but is provided with a guide sleeve 24, 2 which is slidable transversely to the longitudinal axis of the magazine by means of an elongated hole.
5, and the guide sleeve itself is rotatably and slidably supported on tubular rails 26, 27. The sleeve 24 has a radial bore in which a stop member 28 is movably supported. When the stop member 28 is pressed in the direction of the guide rail 26, the stop member fixes the sleeve 24 onto the rail 26.

A piston-cylinder mechanism for pressurizing the stop member 28 is composed of a piston 29 that supports the stop member 28 from the end surface side, and a cylinder casing 30 connected to the sleeve 24. Supply conduit 3
1 can supply pressure fluid to the cylinder chamber 32. A pull rod 33 is connected to the piston 29, via which a spring 34 pulls the piston 29 and also the stop member 28 against the rail 2.
6 so that the sleeve 24 can easily slide over the rail 26 in the absence of pressurization of the piston 29.

The supply of pressure fluid via conduit 31 is controlled by control valve 35.
It is done through. A common supply conduit 36 is connected to the control valves 23, 35.

The labeling station does not allow the magazine to remain in the forward position unless a known monitoring element (German Application No. 2838158) signals the presence of a missing object in the row of objects to be labeled. Yes, the stop member 28 is exclusively the spring 34
Since the sleeve 24 is pulled back only by
can freely slide on the rail 26.
However, when the controller 50 is informed that one object is missing, the control valves 23, 35 are controlled.

The relationship between such a monitoring member and a control device is described in the seventh section.
To explain in detail based on the figures, the label magazine 6, the stop member 28, the holding members 41, 42, 45,
A control device 50 is provided for coordinating the 46 different movements. This control device uses a monitoring member 51 to scan the area of the individual feeding worm 52 for the presence or absence of missing objects, such as a row of bottles, and uses a sensing member 53 to scan the area of the individual supply worm 52 for the presence or absence of missing bottles in a feeding section. Scan each row of those bottles. Rotary table 55 from supply worm 52 to capture cylinder 7 via entry section 54
Since a certain number of bottles are fixed in the machine and the individual mechanical parts 52, 54, 55, 7, 1 are synchronized with each other, removal of the label must be prevented when a missing item is detected. You must decide in advance what time it will be. A control device 50 is also correspondingly connected to the machine and prevents the removal of the label at a precise point in time. The control device 50 controls the drive devices 56 and 57 of the holding members 45 and 46, the drive device 21 of the label magazine 6, and the stop member 28 in accordance with signals from the monitoring member 51 and the sensing member 53. If the control device 50 receives no signals from either the monitoring member 51 or the sensing member 53 and the magazine is in the forward ejection position, the stop member 28 is released. Since the holding members 45, 46 do not work, the label can be removed by means of the removal element.
However, when the monitoring member 51 confirms that there is a missing bottle in the row of bottles, the control device 50 controls the drive devices 56, 57.
control. However, this control does not work immediately, but by calculating the passage time of the bottle, so that the capture cylinder 7 does not reliably transfer the label when it hits the rotary table 55. When the detection member 53 confirms that a large number of bottles are missing, the drive device 5
6, 57, but also the drive 21 of the label magazine 6 and possibly also the stop member 2.
8 is also controlled. However, this only takes place after activation of the control holding members 45, 46 of the drive 21, so that the stacked labels are not swayed by the inertia within the magazine when the magazine 6 returns to its rear position.
The control of the stop member 28 takes place simultaneously or during the return movement of the magazine. For this purpose, the control valve 23,
35 is controlled. This means that the guide sleeve 2
4 and 25 have already attached the attached slider 12 to the rails 26 and 27 before the magazine 6 reaches the rear position.
It means to stop at the top. In this way, it is ensured that the labels in the magazine 6 do not deflect rearwardly due to inertia during movement when braking the magazine 6 in the rearward position. When the monitoring member 51 and the sensing member 53 confirm that there are no missing bottles in the row, the magazine 6 is controlled to the forward position again.
This forward control is performed before the next desired label is taken out. Furthermore, the control device 50 is configured such that the magazine 6 is advanced from the rear position to the front position only after the guide sleeves 24, 25 become actuated.

In the enlarged views of FIGS. 2 and 3 of the label magazine, only the lower label case is shown.
A small hook is formed at the end, and in addition to the guide 10, which serves as a holding element, two additional holding elements 41, 42 are provided on the front and rear edges of the pile, respectively. These retaining members are controllable to move from a retracted first position in which they capture the edge of the pile as far as the small hooks of the guide 10 to a second position shown in phantom. be. The pin-shaped holding members 41 and 42 are piston cylinder mechanisms 43 and 44.
is guided by and is advanced against the force of a spring incorporated in the control.

Instead of the forward-retracting pins as the additional holding members 41, 42, additional pivotable lever-type holding members 45, 46 can also be provided. These lever-type retaining members are connected via rods 47, 48 to drive devices 56, 57, such as piston-cylinder mechanisms.
can be connected to. In both embodiments, the forward-controlled holding members 41, 42 or the holding members 45, 46 rotated forward of the edge of the stacked label secure the front label, and the label is removed from the stacked label by the ejection force of the take-out member. It becomes impossible to take it out. These additional retaining members also serve to prevent the stacked labels from bowing forward during the rearward return movement of the label magazine. In the other operating position, namely the first position, these additional holding members exert only a weak holding force such that even sensitive labels can be easily removed from the stack.

In both embodiments, a front holding element 41, 45 arranged on the front edge of the stacked label and a rear holding element arranged on the rear edge with respect to the rolling movement of the receiving surfaces of the extraction elements 2, 3, 4 42 and 46 can be controlled separately, for example, as shown in FIG. It can be seen from FIG. 4 that the front holding member 45 pushes the leading edge of the stacked label with respect to its rolling movement back from the nominal position along the small hook of the guide 10. In that case, the label is pressed down at the leading edge,
To prevent movement of the label that occurs when the take-out member rolls. In this configuration, the leading edge of the stacked label is pushed back so far that the extraction member does not even touch the label in this area.

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of a labeling station of a labeling machine having a magazine that moves forward and backward for loading labels, FIG. 2 is an enlarged plan view of the magazine shown in FIG. 1, and FIG. 3 is a view similar to that shown in FIG. and an enlarged front view of the label magazine shown in FIG. 2, FIG. 4 is a plan view of the front part of the modified label magazine of FIGS. 1 to 3, and FIG. 6 is a view of the detent for the slider of the magazine of FIG. 5; FIG. 7 is a schematic plan view of a labeling machine having the labeling station shown in FIGS. 1 to 5; FIG. . Reference numerals in the figure: 2, 3, 4...Ejecting member, 6...Label magazine, 41, 42, 45, 46...Additional holding member.

Claims (1)

[Scope of Claims] 1. A station for labeling objects such as bottles, having at least one take-out member rotatably or swingably supported, the station being in one label magazine. is held by a retaining member that engages with the edge of the stacked label by the adhesion of the adhesive using the adhesive curved concave receiving surface of the take-out member that rolls on the front side of the stacked label. In the labeling station from which one of the stacked labels can be taken out, in addition to the holding member, the stacked An additional holding member 41, 42, 45, 46 is provided on the front side of the label and is movable and controllable in a second position for capturing the edge of the stacked label, and in said second position the additional holding member is deposited. The structure is such that the holding force for the label is greater than the ejecting force of the ejecting members 2, 3, and 4, and the additional holding member 4
A control device is provided to control the movement of objects 1, 42, 45, and 46, and the control device is activated only when a monitoring member that monitors the row of objects to which labels are pasted confirms that an object is missing in the row of objects. A labeling station characterized in that it is configured to control the movement of an additional holding member. 2. In the labeling station according to claim 1, the additional holding members 41, 42
is a slidable pin, and the tip of the pin is configured to capture the edge of the stacked label from above to such an extent that the label can still be taken out even in the pulled back position. pasting station. 3. In the labeling station according to claim 1, additional holding members 45, 46
Labeling station, characterized in that the levers are configured as rotatable levers, which levers are configured to capture the edge of the stacked label from above after a controlled movement. 4. In the labeling station according to any one of claims 1 to 3, the additional holding members 41, 42 are slidable pins or the additional holding members 45 are pivotable levers, 46
Labeling station, characterized in that the front side of the stacked labels can be pushed back beyond the nominal position for label removal, at least at the front edge with respect to the rolling movement of the removal members 2, 3, 4. 5. In the labeling station according to any one of claims 1 to 4, additional holding members 41, 42, 45, 46 whose movement can be controlled
are arranged at the front edge and the rear edge of the stacking label with respect to the rolling movement, and the front holding member 41,
A labeling station characterized in that 45 is configured to be controlled independently of rear holding members 42 and 46. 6. In the labeling station according to any one of claims 1 to 5, the label magazine storing the stacked labels can be moved forward and backward, and the control device can control the drive device of the label magazine as an additional drive device. A labeling station characterized in that the labeling station is configured such that it is controlled for reverse movement only after the movement of the holding members 41, 42, 45, 46 is controlled. 7. In the labeling station according to any one of claims 1 to 6, each of the take-out members 2, 3, and 4 supported eccentrically with respect to the center of the curved convex storage surface rotates. A labeling station arranged eccentrically on a support 1, characterized in that the direction of rotation or oscillation is opposite to the direction of rotation of the support 1 and the capture cylinder 7, at least during label removal.