RU43534U1 - MACHINE FOR DRAWING LABELS ON CAPACITY WITH CONTINUOUS POLYMER TAPE - Google Patents

Abstract

The utility model is intended for use when applying labels with a continuous polymer tape on a round and square container with a rounded shape. A utility model includes feeding a label tape 7 from a reel 6 onto the surface of a vacuum drum 14, applying glue to it, cutting it into separate labels, bringing containers 4 to the position of applying labels to them, pressing the label to the container and releasing containers 5 with the label attached. In the area located next to the position of the first contact of the tape 7 with the surface of the drum 14, it is subjected to heat treatment. For this, the paths of movement of the tape 7 in the said zone are shaped as a loop in the form of the letter “V” or “U” and heated in the zone of the loop top to a temperature of 75 ... 95 ° C, after which it is fed to the drum. The surface of the tape, which was located on the inside of the loop, should lie on the surface of the drum. A device for implementing the method includes means for enveloping a loop with a label tape and heating it in the region of the apex of this loop. They are optimally made in the form of at least three non-driven rollers. The first and third of them, behind the direction of movement of the label tape, are located one opposite the other, and the second roller is located outside the straight line that connects the centers of the axes of the first and third rollers, and is equipped with a device for controlled heating of its surface. After heat treatment of the tape made of a polymer material in a state where its provided said shape, due to the removal of residual stresses generated when the tape was wound on the bobbin and stored on the bobbin, the tape exhibits the property of adhering to the convex surface of the vacuum drum. This contributes to tight, without wrinkles and bending of the ends, the fit of the label to the container. 1 n.p., 2 s.p. f-ly, 4 ill. To the abstract - figure 2

Description

The utility model is intended for applying polymer labels to bottles and cans of water, drinks, beer, juices, etc., which have a round and square, with a rounding, shape.

Recently, the most widespread are machines in which the application of labels on containers is carried out using a vacuum drum, to which containers are fed by an input conveyor, or by the input part of the conveyor, and labels are obtained by cutting a continuous polymer tape, which is fed from the spool to the vacuum drum. Adhesive is applied to the back surface of the labels, after which the label is pressed against the surface of the container by rolling it between the surface of the drum and the surface of the auxiliary element.

One of the main problems in such machines is ensuring tight, without wrinkles and bending of the ends, adherence of the label to the surface of the vacuum drum with guaranteed elimination of the possibility of capturing part of the tape with the adhesive applied to other parts of the label and / or machine parts. In the case of wrinkles, the containers do not have a decent presentation, and the aforementioned grip makes it necessary to stop the machine, which is also undesirable. In this regard, numerous attempts have been made to eliminate the possibility of the mentioned negative phenomena.

A known machine for applying labels to a container, according to which the label tape, when it is fed to the vacuum drum, is forced to press against the surface of the drum using an air stream that is directed at a certain angle to the surface of the drum. To do this, the labeling machine is equipped with a nozzle (s) installed near the zone where the label tape meets the surface of the vacuum drum and connected to a compressed air source (US 4181555, class B 32 V 31/00, B 26 D 5/0, B 26 D 7 / 06, publ. 01/01/1980; US 5855710, class B 65 C 9/00, publ. 05/01/1999; US 5858168, class B 65 C 9/00, publ. 12.01.1999; WO 0000397, class B 65 C 9/00, publ. 06.01.2000).

The disadvantage of these machines is the need to equip the machine with additional sophisticated equipment, its maintenance, etc., with all subsequent negative phenomena.

Another way to solve this problem is the formation of protrusions on the surface of the vacuum drum, the distance between which should

correspond to the length of the label, since it is on these protrusions that the main and tail parts of the label should be located on which the adhesive is applied (GB 1595814, class B 65 C 9/04, B 65 C 3/16, B 65 C 9/26, publ. 08/19/1981; US 4181555, class B 32 V 31/00, B 26 D 5/0, B 26 D 7/06, publ. 01/01/1980; US 4500386, class B 32 B 31/00, publ. 02/19/1985, US 6066223, class B 65 CB 3/16, 65 C 904, publ. 05.23.2000).

The disadvantage of this machine is the complexity of the design of the drum.

Another way to solve the aforementioned problem is to use a pair of vacuum grippers installed in the drum that transports the label tape: with the help of one of these grippers, the position of the main edge of the tape is fixed, and with the help of the second, the tail edge. The grippers are installed with the possibility of movement inside the drum, in the direction of its center, for passing an installed stationary stationary knife (US 4632721, class B 65 C 9/02, B 65 C 9/18, publ. 12/30/1986).

A similar solution was used in a machine for applying labels to containers with continuous polymer tape US 5116452 (class B 32 V 31/00), publ. 05/26/1992), adopted as a prototype utility model.

The machine includes a drive vacuum drum and a device for feeding a label tape from a reel to the surface of a vacuum drum. Along the surface of the latter, devices are sequentially arranged for cutting the tape into individual labels and applying glue to their edges. After cutting the label tape, to eliminate defects when sticking labels and sticking parts of the label with glue to its other parts and / or machine parts, the labels separated from the tape are fixed using vacuum grippers, one of which fixes the main edge of the label and the second - the tail edge . Labeling of containers is carried out using compressed air, which is directed at a certain angle to the main edge of the label. Depending on several labels that are simultaneously transported by a vacuum drum, the machine may be equipped with an appropriate number of pairs of vacuum grippers. The containers are fed to the labeling position and removed from this position by means of a conveyor, which is outlined along an arc tangent to the vacuum drum. Rigid slats are installed along the output part of the conveyor, during which labels are pressed against them by containers. The machine is also equipped with devices for drive, synchronization, control and regulation.

The disadvantage of this solution is the complexity of the mentioned vacuum grippers, the need for devices for directing compressed air, and the need for servicing these complex devices.

The objective of the proposed utility model is to create a machine for applying labels to containers with a continuous polymer tape, in which ensuring a tight, without wrinkles and bending of the ends, adhering the label to the surface of the vacuum drum, and then to the surface of the container and eliminating the possibility of adhesion of part of the tape with adhesive to other parts of the label and / or machine parts would be implemented due to more simple than in the described prototypes, technological and constructive methods.

To solve the problem in a machine for applying labels to containers with a continuous polymer tape, which includes a drive vacuum drum, devices for feeding a continuous label tape from a bobbin to the surface of a vacuum drum, for applying glue to its surface, for cutting the label tape into individual labels, for supplying containers to the position of applying labels to them, for pressing the label to the container and for the removal of containers with a glued label and devices for drive, synchronization, control and regulation lamination, in accordance with the utility model, it is equipped with a device for heat treatment of the label tape, which includes means for bending in the said area with label tape loops in the form of the letter "V" or "U" and means for heating the label tape in the area of the top of this loop, moreover, the means for enveloping the label tape loop made with the possibility of filing on the surface of the vacuum drum that surface of the tape, which was placed on the inner side of the loop, and both of these tools are installed in the area, which rimykaet to the position of first contact with the tape surface of the vacuum drum.

It is advisable to loop around the label tape and heat it up in the form of at least three non-driven guide rollers, the first and third of which, in the direction of movement of the label tape, are placed opposite one another, and the second roller is located outside a straight line that connects the axes the first and third roller, and is equipped with a device for regulating the heating of its surface.

In particular, it seems optimal to place the said rollers on the vertices of an isosceles triangle, the equal sides of which connect the centers of the second and first, as well as the second and third, in the direction of movement of the label tape, rollers, and the angle between them is accepted within 5 ... 30 °.

After heat treatment of a tape made of a polymer material in a state where its predetermined shape is mentioned, due to the removal of residual stresses,

formed during winding of the tape on the reel and its storage on the reel, the tape exhibits the property of adhering to a convex surface, for example, a vacuum drum, to which it is sent immediately after heat treatment. In this case, it is necessary that the convexity given to the tape is turned away from the center of this convex surface (i.e., that the ends of the label lie on the surface of the vacuum drum). The mentioned effect is enhanced by the effect of pressing the tape to the surface of the drum under the influence of rarefaction. Due to the combined action of these effects, a tight fit of the tape to the drum surface, and then to the surface of the container, without wrinkles and bending of the ends, is achieved. From the above it seems obvious that the proposed technological measures are the most effective than in the prototype, and can be implemented using a simpler device than the one adopted for the prototype.

The utility model is explained by drawings, where:

figure 1 is a perspective view of a schematic illustration of a machine;

figure 2 - structural diagram of the machine;

figure 3 is a longitudinal section of a roller equipped with a device for regulated heating of its surface.

The machine includes a frame (see figures 1 and 2), on which a conveyor is installed with input 2 and output 3 parts, for feeding containers - bottles, cans, etc. 4 and the removal, respectively, of containers 5 with glued labels, a reel 6 with a continuous polymer label tape 7, and devices: 8 - for applying the date on the labels, 9 - for adjusting the position of the date stamp on the label, 10 - optical label sensor on the tape 7 , 11 - for heat treatment of the label tape, 12 - for pulling the label tape and guide rollers 13.

Along the perimeter of the vacuum drum 14, to which the label tape 6 is fed, are located: a glue transfer roller 15 for applying strips of glue from the glue bath 16, 17 for applying tape 7 to the tape, and a rolling plate 18 for pressing the label to the container 4.

The device 11 for heat treatment of the label tape consists of three non-driven rollers 19, 20 and 21, which are located in close proximity to the position of the first contact of the tape 7 with the drum 14. The first and third rollers, 19 and 21, respectively, are conventional guide rollers. The second roller, 20, is made in the form of a sleeve 23 mounted on bearings 22 (see FIG. 3), inside which a thermoelectric heating element 24 is installed. The roller 20 is also equipped with a temperature relay connected to the element 24 (not shown conditionally).

It was established that the optimum temperature for heating the outer surface of the sleeve 23 is a temperature of 75 ... 95 ° C, and the temperature of the tape b in the place of its first contact with the surface of the drum is 40 ... 55 ° C.

The axes of the rollers 19 and 21 are installed at a distance of 10 ... 25 cm from one another, and the roller 20 is symmetrically relative to them, with the formation of a triangle, the vertices of which are located on the axes of rotation of the rollers. It is advisable to take the angle α with the vertex on the axis of the roller 20 within 5 ... 30 ° (see, Fig. 2). With a small angle a, the trajectory of the tape 6 during its passage through the rollers can be characterized as the letter "U", and when it is enlarged, by the letter "V".

The tape 6 should enter the device 10 so that the surface “A” of the tape lies on the surface of the drum 13, which is located on the inner side of the loop, or, in other words, which contacts the bushings of the rollers 19 ... 21.

A device for driving, synchronizing, controlling and regulating all mechanisms and other devices is not conventionally shown.

In the process, the label tape 7 moves from the bobbin b to the vacuum drum 14. Due to the heat treatment in the device 11, it lies on the surface of the drum 14 with the formation of a bulge directed from the center of the drum, the presence of which during further movement of the tape contributes to the tight fit of the tape to the surface of the drum, number, when passing the tape 7 through the zone of application of glue on it and its cutting. Due to this, wrinkles are not formed in the tape, and after cutting the tape, the ends of the label are not bent and the possibility of sticking part of the label with the adhesive applied to other parts of the label and / or machine parts is excluded.

After cutting the tape 7 into labels 25, the latter on the surface of the drum 14 are sent to the area of their application to the containers 4. After that, the run-in of the containers 5 with the labels applied on them between the rolling plate 18 and the surface of the drum 14, they are removed from the machine by the output part 3 of the conveyor.

Tests have proven the reliable operation of the machine on bottles of different sizes and shapes, including square, with rounded ribs.

Claims (3)

1. A machine for applying labels to a container with a continuous polymer tape, which includes a drive vacuum drum, a device for feeding a label tape from a bobbin to the surface of a vacuum drum, for applying glue to its surface, for cutting a label tape into individual labels, for bringing containers to the position of applying labels to them, pressing the label to the container and retracting containers with a glued label and devices for drive, synchronization, control and regulation, which differs in that it is equipped It is provided with a device for heat treatment of a label tape, which includes a means for bending a loop in a said area with a label tape and means for heating a label tape in a region of the apex of the loop, and a means for bending a loop with a tape for making the surface of the vacuum drum that surface of the tape, which was located on the inside of the loop, and both of these tools are installed in the area that is adjacent to the position of the first contact of the tape with the surface of the vacuum bar bana. 2. The machine according to claim 1, characterized in that the means for enveloping a loop with a label tape and heating it in the region of the apex of this loop are made in the form of at least three non-driven directional rollers, the first and third of which, in the direction of movement of the label tapes are placed one opposite the other, and the second roller is located outside a straight line that connects the centers of the axes of the first and third rollers, and is equipped with a device for controlled heating of its surface. 3. The machine according to claim 2, characterized in that the said rollers are located at the vertices of an isosceles triangle, the equal sides of which connect the axes of the second and first, second and third, in the direction of movement of the label tape, rollers, and the angle between them is accepted within 5 - 30 °.