DEVICE FOR, AND METHOD OF, APPLYING, DRYING AND ACTIVATING HOT GLUE ON A PACKAGING MACHINE

Abstract

The invention relates to a device for, and method of, applying, drying and activating hot glue on the packaging machine itself. In the case of the basic option, the device works as follows: two assemblies (1) for applying and drying glue are positioned on the plates (3) of machine (M). Assemblies (1) are made up of consoles (11) mounted in a way that enables them to slide and move, their front end on the lever (32) and their rear end on the shaft (31) attached between two plates (3). The lever (32) is attached, by way of levers (33), between the plates (3). One device (12) for applying hot glue is attached to the consoles (11), just above the lever (32), while a number of fans (13) are fastened along the console (11), above the device (12), as well as on the opposite side. The heater (4) is horizontally attached to the carrier (42) and positioned in the opening (43) on the plate (41). The strip heater (7) is made up of an endless strip (71) and vertical heaters (72). In the case of the basic option, the method of applying, drying and activating hot glue on the packaging machine itself consists of the following: paper (5) from the roll (51) is introduced under the consoles (11). The devices (12) apply hot glue to the top side of the paper in a continuous strip (61) and a discontinuous strip (62). Strips of glue (61, 62) are dried by fans (13) and further transported through the machine (M), together with the paper (5). Once the product is packaged, packages reach a horizontal heater (4) which activates the glue (61, 62) on the bottom side of the package, after which product packages pass between vertical heaters (72) which activate the glue on the sides of packages.

Claims

1. A device for applying, cooling and activating hot glue on a packaging machine, characterized by: opposing plates (3) defining a structure of the packaging machine (M); a shaft (36) extending between and operatively connected to the plates (3) of the machine (M); a first linear guide (34) and a second linear guide (32) extending between and operatively connected to the plates (3) of the machine (M), the second linear (32) guide being disposed between the shaft (36) and the first linear guide (34); two assemblies (1,2,2′) adapted and configured for applying and cooling the glue applied to a web (5) passing between the plates (3) of the machine (M), the two assemblies (1,2,2′) being positioned between the plates (3) of the machine (M), each assembly (1,2,2′) comprising a holder (11,21,22), the holder (11,21,22) of each assembly (1,2,2′) having a front end and an opposite back end, the back end of the holder of each assembly being slidably mounted on the shaft (36), the front end of the holder of each assembly being selectively mountable relative to the first and second linear guides (32,34), wherein in a first configuration of the device, the front end of the holder (11) of the first assembly (1) is removably attached and slidably mounted to the first linear guide (34) and the front end of the holder (11) of the second assembly (1) is removably attached and slidably mounted to the first linear guide (34), and wherein a second configuration of the device, the front end of the holder (21) of the first assembly (2) is removably attached and slidably mounted to the first linear guide (34) and the front end of the holder (22) of the second assembly (2′) is removably attached and slidably mounted to the second linear guide (32), each holder having at least one device (12) adapted and configured for applying hot glue to the web material (5) passing between the plates (3) of the machine (M), each holder (11,21,22) having at least one fan (13) arranged along the holder (11,21,22) in a direction of travel of the web material (5) passing through the machine, the at least one fan (13) of each holder being adapted and configured to direct air onto the web material (5) after application of the hot glue from the at least one glue application device (12) to cool the glue; and at least one heater (4,7,72) adapted and configured to activate the glue applied to the web by the least one glue application device.

2. The device according to claim 1, characterized by the fact that the shaft (36) is attached to the plates (3) via respective connection plates (37, 38); the first linear guideway (34) is attached to the plates (3) via respective connection plates (35); and the second linear guideway (36) is attached to the plates (3) via respective connection plates (33).

3. The device according to claim 1, characterized by the fact that the at least one heaters (4,7,72) is connected to a heater controller (82) by use of connections (821); the at least one fan (13) and the glue application device (12) are interconnected by connections (834) to each other through a fan and glue application controller (84), the at least one fan (13) and the at least one glue application device (12) are connected to a device controller (83), connections (831, 832) the heater controller (82) and the device controller (83) are connected to a subprocessor (81) by way of respective connections (811,813), and the subprocessor is an integral part of a processor (8) of the machine (M).

4. The device, according to claim 1, characterized by the fact that the at least one glue application device (12) is adapted and configured to apply hot glue to the web material (5) passing through the machine in at least one of a continuous strip (61) and in a discontinuous strip (62).

5. The device according to claim 1, characterized by the fact that in the second configuration of the device, the at least one glue application device (12) of the holder (21) of the first assembly (2) is removably attached and slidably mounted to the first linear guide (34) is adapted and configured to apply hot glue to the web material (5) passing through the machine in a continuous strip (61); and the at least one glue application device (12) of the holder (22) of the second assembly (2′) is adapted and configured to apply hot glue to an opposite side of the web material passing though the machine in at least one of a continuous (61) and a discontinuous strip (62).

6. The device according to claim 5 wherein the web material (5) passing through the machine (M) overwraps a product to form a package (P), and a first heater (4) of the at least one heater activates glue applied to the web on a bottom side of the package (P) and a second heater (7,71) of the at least one heater actives the glue applied to the web on at least one side of the package (P).

7. The device according to claim 1, wherein in the first configuration, the holders (11) of each assembly (1) are positioned on a first side of the web material (5) passing through the machine (M), and wherein in the second configuration, the holder (21) of the first assembly (2) is positioned on the first side of the web material (5) passing through the machine (M) and the holder (22) of the second assembly (2′) is positioned on a second side of the web material (5) passing through the machine (M), the second side of the web material being opposite the first side of the web material.

8. The device according to claim 1, wherein in the first configuration of the device, the shaft (36) is spaced from the first linear guide (34) a first distance, and in the second configuration of the device, the shaft (36) is spaced from the first linear guide (34) a second distance, the second distance is greater than the first distance.

9. The device according to claim 1, wherein in the second configuration of the device, the shaft (36) is spaced from the first linear guide (34) a first distance, and the shaft (36) is spaced from the second linear guide (32) a second distance, the second distance is less than the first distance.

10. The device according to claim 1, each holder (11,21,22) of the assemblies (1,2,2′) has a surface that faces the web material (5), wherein in the first configuration of the device, the web facing surface of the holder (11) of each assembly (1) is oriented in the same direction toward the web material, and in the second configuration of the device, the web facing surface of the holder (21) of the first assembly (2) removably attached and slidably mounted to the first linear guide (34) is oriented to the web in a first configuration, and the web facing surface of the holder (22) of the second assembly (2′) removably attached and slidably mounted to the second linear guide (32) is oriented to the web in a second configuration, the second configuration opposed the first configuration with the web material therebetween.

11. A method of using a device for applying, cooling and activating hot glue on a packaging machine, wherein the device has opposing plates (3) defining a structure of the packaging machine (M), a shaft (36) extending between and operatively connected to the plates (3) of the machine (M), a first linear guide (34) and a second linear guide (32) extending between and operatively connected to the plates (3) of the machine (M), the second linear (32) guide being disposed between the shaft (36) and the first linear guide (34), two assemblies (1,2,2′) adapted and configured for applying and cooling the glue applied to a web material (5) passing between the plates (3) of the machine (M), the two assemblies (1,2,2′) being positioned between the plates (3) of the machine (M), each assembly (1,2,2′) comprising a holder (11,21,22), the holder (11,21,22) of each assembly (1,2,2′) having a front end and an opposite back end, the back end of the holder of each assembly being slidably mounted on the shaft (36), the front end of the holder of each assembly being selectively mountable relative to the first and second linear guides (32,34), the method comprising: arranging the device in one of a first configuration and a second configuration based upon a location of glue to be applied to a web passing through the machine; wherein the step of arranging the device in the first configuration includes removably attaching and slidably mounting the front end of the holder (11) of the first assembly (1) to the first linear guide (34) and removably attaching and slidably mounting the front end of the holder (11) of the second assembly (1) to the first linear guide (34) so that a glue application device (12) arranged on each holder (11) applies hot glue to a same side of a web passing through the machine and at least one fan (13) on each holder (11) cools the glue applied to the web passing through the machine; and wherein the step of arranging the device in the second configuration includes removably attaching and slidably mounting the front end of the holders (21) of the first assembly (2) to the first linear guide (34) and removably attaching and slidably mounting the front end of the holder (21) of the second assembly (2′) to the second linear guide (32) so that a glue application device (12) arranged on the holder (21) of the first assembly (2) applies hot glue to one side of a web passing through the machine and at least one fan (13) on the holder (21) of the first assembly (2) cools the glue applied to the one side of the web material passing through the machine, and the glue application device (12) arranged on the holder (22) of the second assembly (2′) applies hot glue to an opposite side of the web passing through the machine and at least one fan (13) on the holder (11) of the second assembly (2′) cools the glue applied to the opposite side of the web passing through the machine; and wherein in both the first and second configuration of the device, at least one heater (4,7,72) is adapted and configured to activate the glue applied to the web by the least one glue application device.

12. The method of claim 11 wherein in at least one of the first and second configuration of the device, the at least one glue application device (12) is adapted and configured to apply hot glue to the web material (5) passing through the machine in at least one of a continuous strip (61) and in a discontinuous strip (62).

13. The method of claim 12 wherein in the second configuration of the device, the at least one glue application device (12) of the holder (21) of the first assembly (2) removably attached and slidably mounted to the first linear guide (34) is adapted and configured to apply hot glue to the web (5) passing through the machine in a continuous strip (61), and the at least one glue application device (12) of the holder (22) of the second assembly (2′) is adapted and configured to apply hot glue to an opposite side of the web passing though the machine in at least one of a continuous (61) and a discontinuous strip (62).

14. The method of claim 11 further comprising configuring the machine such that the web (5) passes through the machine (M) and overwraps a product to form a package (P), and a first heater (4) of the at least one heater activates glue applied to the web on a bottom side of the package (P) and a second heater (7,71) of the at least one heater actives the glue applied to the web on at least one side of the package (P).

15. The method of claim 11, wherein in the first configuration, the holders (11) of each assembly (1) are positioned on a first side of the web (5) passing through the machine (M), and wherein in the second configuration, the holder (21) of one assembly (2) is positioned on the first side of the web (5) passing through the machine (M) and the holder (22) of the other assembly (2′) is positioned on a second side of the web (5) passing through the machine (M), the second side of the web being opposite the first side of the web.

Description

A BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The invention is explained in detail with the aid of the following accompanying drawings:

[0012] FIG. 1 shows the axonometric appearance of the packaging machine with the device for applying, drying and activating hot glue;

[0013] FIG. 2 shows detail “A” from FIG. 1;

[0014] FIG. 3 shows details of the connection of the device for applying and drying glue from FIG. 1, the basic option;

[0015] FIG. 4 shows the details of the connection of the device for applying and drying glue, from FIG. 1, Option 1;

[0016] FIG. 5 shows the flow of paper and the applied glue, from the device shown in FIG. 3;

[0017] FIG. 6 shows the flow of paper and the applied glue, from the device shown in FIG. 4;

[0018] FIG. 7 shows the cross section of the device, basic option;

[0019] FIG. 8 shows the cross section of the device, Option 1;

[0020] FIG. 9 shows a detail of the vertical strip heater;

[0021] FIG. 10 shows a detail of a plate with a slot and a horizontal heater,

[0022] FIG. 11 shows a block diagram of the device automation, according to the patent, and

[0023] FIG. 12 schematically shows the activation of glue with the help of the heater.

DETAILED DESCRIPTION OF THE INVENTION

[0024] In the case of the Basic Option of the present invention, the device for, and method of, applying, drying and activating hot glue on the packaging machine itself are implemented by placing two assemblies 1 for applying glue on plates 3 at the mouth of the packaging machine M, where packaging paper 5 is introduced into it (FIGS. 1, 2). Assemblies 1 are made up of concoles 11, in the shape of the Latin letter “U”, which are mounted in a way that enable them to slide—front end on lever 32, and rear end on shaft 31. Shaft 31 is attached between two plates 3. The lever 32 is attached, via levers 33, between the plates 3. Plates 3 are standard, are known from the Prior Art, and are used to fasten other elements to the mouth of the machine, e.g. rollers for guiding paper 5, which unwounds from roll 51. On the consoles 11, one device 12 for applying hot glue is attached just above lever 32. A number of fans 13 for drying the glue (FIG. 3) are attached along console 11, above device 12 and on the opposite side. According to the present invention, the device also comprises heater 4, which is horizontally attached to the support 42 and placed in the opening 43 on plate 41. This heater contact-activates the dried glue on the underside of the package of products. This construction of plate 41 and heater 4 is known from the Prior Art and is used for welding packages in foil; however, within the scope of the present invention it is applied for the first time also for packaging goods in paper. According to the present invention, the device also comprises a vertical strip heater 7, made up of the endless strip 71 and vertical heaters 72. Its function consists in thermally activating the dried glue on the vertical sides of the product package. This construction of the vertical strip heater 7 is also known from the Prior Art, and is used for welding packages in foil; however, within the scope of the present invention it is applied for the first time also for packaging goods in paper. According to the present invention, the control part of machine M is designed as follows: heaters 4, 72 are connected to the controller 82 by connections 821. Fans 13 and glue applicators 1, 22 are interconnected by connections 834 also with their controller 84. Controller 84 is connected to controller 83 via connections 831, 832. Controller 82 is connected, via connection 811, with subprocessor 81, with which controller 83 is also connected via connection 813. According to the present invention, subprocessor 81 is an integral part of processor 8 of machine M. Subprocessor 81, in correlation with controllers 82, 83, can independently guide and control the process, but must be correlated and controlled by processor 8, because the operation of the entire machine M is complex and requires coordination of a large number of individual operations.

[0025] In the case of the basic option, the method of applying, drying and activating the hot glue on the packaging machine is performed by introducing the paper 5 from roll 51 using a standard system of rollers (not the subject of the invention) under consoles 11 (FIG. 5). Devices 12 apply hot glue to the top side of the paper in a continuous strip 61, or in a discontinuous strip 62. Strips of glue 61, 62 are dried by fans 13 and further transported, together with paper 5, through machine M as dry glue. Once the product is packaged (not the subject of the invention), the packages reach the horizontal heater 4 which activates the glue 61, 62 on the underside of the package. Product packages then pass between the vertical heaters 72, which activate the glue on the sides of the packages, thus completing the packaging process.

[0026] In the case of Option 1 of the present invention, the device for, and the method of, applying, drying and activating hot glue on the packaging machine itself are implemented in the following manner: at the mouth of the machine M, where packaging paper 5 is introduced, assemblies 2, 2 for applying and drying glue are placed on plates 3 (FIG. 4). Assemblies 2, 2 are made up of consoles 21 22, in the shape of the Cyrillic letter “P” [“Π” ]. Console 21 is slidably mounted on shaft 36, which is attached to plate 3 using levers 37, 38. On the other, bottom end, console 21 is slidably mounted on lever 34 which is, using lever 35, attached to plate 3. Device 12 for applying hot glue is attached on console 21, immediately above lever 34, while a number of fans 13 for drying the glue are attached along console 21, above device 12, on the opposite side (FIG. 4). Console 22 is slidably mounted on shaft 36, while on the other end it is slidably mounted on lever 32, which is attached to plate 3 via lever 33. Device 12 for applying hot glue is positioned on console 22, on the inner side, just above lever 32, while a number of fans 13 are placed above it, along console 22. In the case of this option, heaters 4, 72 are positioned the same way as in the basic option, and are performing the same function. The control part is also implemented the same way as in the basic option.

[0027] In Option 1, the method of applying, drying and activating hot glue on the packaging machine itself is implemented by introducing paper 5 from roll 51 using a standard system of rollers (not the subject of the invention) below console 21 and above console 22. The device applies hot glue to the top side of paper 5 from console 21 in a continuous strip 61, while device 12 applies glue to the bottom side of paper 5 in a continuous/discontinuous strip 61 from console 22 (FIG. 6). Strips of glue 61, 61 are dried by fans 13 and are transported, together with paper 5, as dry glue, through machine M. Once the product is packaged (not the subject of the invention), the packages reach horizontal heater 4 which activates glue 61, 62 on the underside of the packages. Thereupon, product packages pass between the vertical heaters 72, which activate the glue on the sides of the packages, thus completing the packaging process.

[0028] The advantage of the above described solution is reflected in the fact that it is possible to unify all the packaging combinations in one machine, with only a short time required for changing the operating mode. So far, none of the manufacturers has attempted to construct a single machine that would be able to perform packaging in foil or paper by way of full wrapping or bending. It is especially important that this invention makes is possible to package facial tissues or rolls of toilet paper in foil or paper using the same machine, without any special technical interventions.

INDUSTRIAL OR OTHER APPLICATION OF THE INVENTION

[0029] Using the invention at hand, the device for, and method of, applying, drying and activating hot glue on the packaging machine itself are implemented on standard machines for packaging products in foil, which are not able to package product in paper without special changes made to them. These changes require several hours of preparation and technical adjustment, which brings with it work delays. Also, the existing machines require the use of special paper with a full surface coating of glue, which is uneconomical, or the application of hot glue immediately prior to packaging, making the machine very dirty. In any case, existing machines require either significant modifications of a technical nature or the purchase of special machines only for the foregoing purpose.

[0030] Using the invention at hand, the device for, and method of, applying, drying and activating hot glue on a packaging machine is a machine that is universal for all necessary operations, in which changes to the operating mode are made by software adjustment and feeding of the appropriate material, i.e. paper or foil.