VERTICAL PACKAGING MACHINE WITH TWO OPPOSITE FORMING TUBES

Abstract: The invention relates to a packaging machine made up of two vertical packaging groups (1 and 2) set on the opposite sides (3 and 4) of a central structure (5) equipped with a horizontal bilateral station (6) that carries out the transversal sealings of both resulting packets (15 and 16). Compared with the utilization of two different packaging machines, this structure allows smaller overall dimensions, cheapness and an easier way of realization and use, even making two packets with different features simultaneously.

Description: VERTICAL PACKAGING MACHINE WITH TWO OPPOSITE FORMING TUBES TECHNICAL FIELD This invention relates to the manufacturing field of packaging machines generally included in the International Classification B65B. BACKGROUND ART There are well-known packaging machines with only one forming tube made up of one vertical packaging group set on the frontal face of a supporting structure. Said structure is equiped with a horizontal station that performs the trasversal sealing of the packets through a thermosealing pincer. In this packaging machines, the film comes from a roll, wrapps itself up in the forming tube and is welded longitudinally. This continuous tube of flexible material is pushed down by adherent belts and is filled upwards with the conditioning product to obtain finished packets by using a thermosealing pincer. It is also known the possibility to put side by side two vertical packaging machines. Some examples of these configurations are described and illustrated in the following patents: FR Patent 2,250,676 US Patent 4,081,943 DE Patent 2,703,455. Said configurations are made up of two different vertical packaging groups that are not set on the opposite sides of a central construction, but they are put side by side on the same wall of the supporting structure. It must be pointed out that each forming group is served by its own sealing trasversal station. It is clear that the problem of the unification of two trasversal sealing stations has not yet been dealt with. This invention proposes a valid and simple answer to said problem. DESCRIPTION The invention is now detailly described with reference to the drawing enclosed as a not-blinding example. In the enclosed drawing the figure 1 shows a schematic form of realization of the invention. In this figure the particulars are marked as follows: 1) first packaging vertical group on the left side 2) second packaging vertical group on the right side 3) left side of the central structure 4) right side of the central structure 5) central structure 6) bilateral horizontal station for the trasversal thermosealings 7) first thermosealing pincer on the left side 8) second thermosealing pincer on the right side 9) connection rod between the inside jaws of the first and of the second pincer 10) connection rod between the outside jaws of the first end of the second pincer 11) kinematic motions of the translation of the connectin rods 12) central shaft for the rotation of the kinetatic motions 13) ribbon of the packaging flexible material 14) roll of the packaging material 15) finished packet on the left side 16) finished packet on the right side 17) vertical driving belts 18) devices for the longitudinal sealing 19) vertical forming tubes 20) crossbar supporting two forming tubes Examining figure 1 in details you can see that the station 6 is able to perform the trasversal sealing on both sides 3 and 4 of the central structure 5. The connection rods 9 and 10 cross the central structure 5, come out from both sides 3 and 4 and link the inside and the outside jaws of the pincers 7 and 8. You must also note that the central shaft 12 is unique. Through the kinematic motions 11 the rotation of this shaft makes the translation of the rods 9 and 10 in order to open and close both pincers 7 and 8. It is evident the advantage obtained through the bilateral station 6 of this configuration. Compared with the utilization of two conventional stations, this original solution lets have smaller overall dimensions, cheapness and an easier way of realization and use, even making two packets with different features simultaneously. This invention of course is susceptible of several changes of achievement, both concerning the proportions and the technological choices of the manufacturing material. The kinematic motions of the trasversal sealing pincers can be obtained using electricpneumatic devices. The rods 9 and 10 instead of linking both inside and outside jaws, can link alternatively one inside jaw with one outside jaw. In the area of this invention will be comprised all the vertical packaging machines with two opposite forming tubes made up of two vertical packaging groups set on the opposite sides of a central structure equiped with one bilateral station that performs the trasversal sealings of both resulting packets, as substantially described, illustrated and afterwards claimed.

Claims: CLAIMS 1) Vertical packaging machine with two opposite forming tubes, characterized by the fact that it is made up of two different vertical packaging groups 1 and 2 , which are set on the opposite sides 3 and 4 of a central structure 5 that is equiped with a horizontal bilateral station 6 that carries out the trasversal sealings of both resulting packets 15 and 16. 2) Vertical packaging machine with two opposite forming tubes, as in claim 1) characterized by the fact that the bilateral station 6 is provided with sealing pincers 7 and 8 which are set one on the side 3 and the other one on the side 4 and are each other connected by the connection rods 9 and 10. 3) Vertical packaging machine with two opposite forming tubes, as in the previous claims characterized by the fact that the motion of each connection rod 9 and 10 influences both the processes of trasversal sealing that are carried out on the side 3 and on the side 4. 4) Vertical packaging machine with two opposite forming tubes, as in the previous claims characterized by the fact that the motions of the connection rods 9 and 10 come from kinematic motions 11 made by only one central shaft 12. 5) Vertical packaging machine with two opposite forming tubes, as in claim 1 characterized by the fact that both vertical packaging groups 1 and 2 can be fed with flexible material 13 coming from only one roll 14.

Inventors: RAPPARINI GINO, RAPPARINI, GINO
Applicants: ICA SPA, ICA S.P.A.
Application year: 1992
Main classification: B65B9
IPC codes: B29C65, B65B9, B65B51