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(11) | EP 2 390 091 A1 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Device for the quality control of the glueing of a strip of continuous labels |
| (57) It comprises feeding means, a central computer, a frame (1), a feeder and a continuous
label roll reel, and a pair of support cylinders, one first one (2) and a second one
(3) that guide the continuous label roll, characterized in that it comprises two supports,
one first one (4) and a second one (5), separated from each other, which define an
opening (11), which opening (11) defines a cavity (6), inside which detection means
(10) are provided, with said continuous label roll being arranged over supports (4,
5), with the glued part over opening (11), and suction or aspiration means for the
continuous label roll through said opening (11).
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[0001] Device for controlling the quality of the glueing of a continuous label roll of the type comprising feeding means, a central computer, a frame, a feeder and a continuous label roll reel, and a pair of support cylinders, a first one and a second one that guide the continuous label roll, characterized in that it comprises two supports, a first one and a second one, separated from each other, which define an opening, which opening defines a cavity, inside which detection means are provided, with said continuous label roll being arranged on the supports, with the glued part over the opening, and suction or aspiration means for the continuous label roll through said opening.
BRIEF DESCRIPTION OF THE INVENTION
[0002] This invention is an improvement in the sector related to glueing a continuous label roll, because it makes it possible to know, with a great degree of reliability, whether a continuous label roll is poorly glued, and it also offers the possibility of knowing the exact point where said defect is located, so that an operator can solve it.
[0003] One of the main drawbacks facing the manufacturers of continuous label roll glueing machines is that if a fault occurs in the glueing of the two ends, it is difficult to know where said error lies and, what is worse, it implies that large amounts of continuous label rolls must be withdrawn as they are poorly glued.
[0004] Some solutions have focused on placing a UV lamp, with the operator sitting in front to observe whether any defect occurs. This solution suffers from various drawbacks. On the one hand, there is the cost of keeping an operator only for this quality control operation, and on the other hand, the fact that after a certain period of time, with this type of light, the operator becomes very tired, and lastly that the winding/unwinding cannot be accelerated more than the speed at which the operator is able to view the roll as he checks it, since if the roll moves too fast, this may led to a reduction in the quality of the operator's fault detection.
[0005] There is also a UV light detection system, which has the advantage of guaranteeing that there is glue for the appropriate glueing, but on the contrary, it does not guarantee that the rolls are appropriately sealed.
[0006] Within this idea, the inventor has designed a new device, that is intended to be coupled to the winding/rewinding machines, which automatically detects possible faults or errors in the glueing, then warning the operator, through audible and/or visual means and stopping the winding/rewinding machine in another place so that the operator can take action on the particular part containing the fault or error.
[0007] So, the device comprises supports, on which the continuous label roll circulates. Said supports are separated from each other, defining an opening, inside which a cavity is defined in which the detection means are arranged. The device comprises suction or aspiration means which suck the roll through said cavity. The continuous label roll has one side wherein the area where the glueing has taken place can be seen, and this area is just above the opening.
[0008] When the winding/rewinding machine is started up and the continuous label roll is made to pass through the device, when the glueing is not correct, because it has not been glued properly, when sucking the roll, the part that is poorly glued will be drawn towards the inside of the cavity and the detection means will send said information to the central computer which will stop the winding/rewinding machine so that an operator, at a certain point, can observe the error and correct it.
[0009] An object of this invention is a device for controlling the quality of the glueing of a continuous label roll of the type comprising feeding means, a central computer, a frame, a feeder and a continuous label roll reel, and a pair of support cylinders, a first one and a second one that guides the continuous label roll, characterized in that it comprises two supports, a first one and a second one, separated from each other, that define an opening, which opening defines a cavity, inside which detection means are provided, with said continuous label roll being arranged on the supports, with the glued part over the opening, and suction or aspiration means for the continuous label roll through said opening.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] In order to facilitate the explanation, four sheets of drawings are attached which represent a practical embodiment, which is provided as a nonlimiting example of the scope of this invention:
- Figure 1 is a perspective view, with the rest of the winding/rewinding machine elements having been removed:
- Figure 2 is a perspective view, from the opposite side of that in Figure 1, of the object of this invention, without the frame,
- Figure 3 is a plan view of Figure 2, and
- Figure 4 is a detail of the area of the detection means.
PARTICULAR EMBODIMENT OF THIS INVENTION
[0011] So, Figure 1 shows a frame 1, some support cylinders, first cylinder 2 and a second cylinder 3, a first support 4, a second support 5 and a cavity 6.
[0012] Figure 2 shows cylinders 2, 3, supports 4, 5, cavity 6 with its opening 11 and adjustment means 7.
[0013] Figure 3 shows cylinders 2, 3, supports 4, 5, cavity 6 with its opening 11, inside which a flat steel bar 8 with a longitudinal hole 9 is arranged, and adjustment means 7.
[0014] Lastly, in Figure 4 flat steel bar 8 has been illustrated with its longitudinal hole 9 and a sensor 10.
[0015] So, in a particular embodiment, this device is a part of or an appendix to a winding/rewinding machine for continuous label rolls.
[0016] In order to clarify the claimed object, the winding/rewinding machine has not been shown since it is known, and the same applies to the continuous label roll and the aspiration or suction means.
[0017] This way, using a calibrator the part with the glued, overlapped ends of the roll is made to lie just above opening 11.
[0018] When the winding/rewinding machine is started, and consequently the device that is the object of this invention, the roll passes over supports 4,5 and the glued part over opening 11, with said roll being sucked by the suction or aspiration means, which suck it through cavity 6.
[0019] If the roll is faulty or has been poorly glued, one part of said roll will be attracted by the suction or aspiration force and the detection means 10, in this embodiment a sensor, will detect said part of the roll and will send information to a central computer which will be able to emit light and/or audible signals so that the operator is aware that the device has located a fault in the glueing. The central computer could also stop the roll subsequently, in a particular place, so that the operator can observe and repair the fault in the roll.
[0020] There is also the possibility of providing in said cavity 6 a flat steel bar 8 with a longitudinal hole 9, through which the suction or aspiration force is produced. This way, flat steel bar 8 helps to keep the roll firm even when it is being sucked or aspirated.
1. - Device for controlling the quality of the glueing of a continuous label roll of
the type comprising feeding means, a central computer, a frame (1), a feeder and a
continuous label roll reel, and a pair of support cylinders, one first one (2) and
a second one (3) that guide the continuous label roll, characterized in that it comprises two supports, one first one (4) and a second one (5), separated from
each other, which define an opening (11), which opening (11) defines a cavity (6),
inside which detection means (10) are provided, with said continuous label roll being
arranged over supports (4, 5), with the glued part over opening (11), and suction
or aspiration means for the continuous label roll through said opening (11).
2. - Device, according to claim 1, characterized in that detection means (10) are a sensor.
3. - Device, according to claim 1 or 2, characterized in that in said cavity (6) a flat steel bar (8) is provided with a longitudinal hole (9),
through which the suction or aspiration force is produced.
4. - Device, according to claim 1, characterized in that it comprises adjustment means (7) for the separation between supports (4, 5).
5. - Device, according to one of the preceding claims, characterized in that it comprises audible and/or light means when one part of the continuous label roll
is detected as incorrectly glued.
6. - Device, according to one of the preceding claims, characterized in that the device stops at the same instant or one moment after a part of the continuous
label roll is detected as incorrectly glued.