Apparatus for filling and sealing bags for containing banknotes

Abstract

Apparatus for filling and sealing bags for containing banknotes, comprising a substantially parallelepiped container (10) having side walls (11), a bottom (12) and an upper cover (13) having an opening (14) adapted to allow the entry of a bag (15) into the container, the bag comprising a flexible plastic film and banknotes (17) intended to be introduced into the bag. The apparatus further comprises a pair of sealing strips (21a, 21b) arranged at the upper end of the container (10) and a control and movement system for controlling the strips and moving them between their respective open and closed positions. The control and movement system of the sealing strips (21a, 21b) comprises a motor (26) for driving a shaft (27) adapted to rotate at least one drive pulley (28) arranged below and corresponding to the vertical edges of the container (10), a kinematic connection for closing the sealing strips connecting the drive pulley (28) with the sealing strips (21a, 21b) comprising a combination of cables and tension springs (29, 29', 30, 30', 31, 31'), and a kinematic connection for opening the sealing strips connecting the sealing strips (21a, 21b) with respective fixed anchor points (34, 34') of the container (10) comprising a combination of cables and tension springs (33, 33', 35, 35').

Description

Technical Field

[0001] The present invention relates to an apparatus for introducing banknotes or other paper-based valuables into a disposable packaging bag, the packaging bag being adapted to be sealed after filling.

[0002] This device is intended for use in machines that receive and store banknotes, such as those commonly found in banks, supermarkets, shopping malls, or similar places. Background Technology

[0003] In the prior art, banknotes are typically introduced into these machines through an inlet port, their authenticity and integrity are checked, and then they are inserted into boxes or plastic bags that are removably housed within the machine itself.

[0004] If using plastic bags, they are best to be disposable, meaning that once the bag is full, it should be sealed at the edge of its opening with a suitable sealing flap so that it cannot be reused once opened.

[0005] Such equipment is disclosed, for example, in the same applicant’s applications WO2014 / 181288, WO2014 / 181286 and WO2014 / 181290.

[0006] For example, in application WO2014 / 181288, banknotes are first temporarily placed in an upper container, then removed from below the upper container by a pressure element through an opening at the bottom to contact a plastic film designed to form a receiving bag, and introduced (through a corresponding opening) into a lower container, where the banknotes are arranged in an orderly stack within the bag. Once the bag reaches the desired fill level, it is sealed at the top by a specific sealing strip arranged near the aforementioned inlet opening of the lower container.

[0007] One of the main problems with these types of machines is related to the size of the sealing blades and their drive mechanism, which obviously also needs to ensure maximum operational reliability. Summary of the Invention

[0008] The overall objective of this invention is to overcome the aforementioned disadvantages by providing a device for filling and sealing bags for holding banknotes, wherein sealing blades arranged in the upper portion of the container of the filling bag and their kinematic drive mechanisms occupy as little space as possible, and also ensure a high level of operational reliability in terms of the sealing quality of the bag and the prevention of accidental spillage of banknotes in the step immediately preceding the sealing.

[0009] In view of this purpose, according to the present invention, an apparatus for filling and sealing a bag for containing banknotes is conceived, the apparatus comprising a generally parallelepiped-shaped container having side walls, a bottom, and a top cover having an opening adapted to allow a bag to enter the container, the bag comprising a flexible plastic film and banknotes intended to be introduced into the bag, the apparatus further comprising a plate disposed within the container for supporting banknotes inserted into the bag and capable of vertical movement by a controlled lowering and raising device, a first sealing strip and a second sealing strip disposed at the upper end of the container, located below the opening of the top cover, and movable toward or away from each other between an open position and a closed position, wherein in the open position, the first and second sealing strips are away from each other to allow banknotes to be introduced into the container through the opening, and in the closed position, the first and second sealing strips are in contact with each other to seal the upper portion of the bag inserted therein. The device further includes a pressure element capable of vertically moving, according to a command, between a raised position located outside the container and a lowered position for at least partial insertion into the container through an upper opening, to accompany and push down banknotes already present in the bag resting on the plate, accompanied by new banknotes to be introduced into the container. The device also includes a control and movement system for controlling and moving a sealing strip between corresponding open and closed positions. The control and movement system for the sealing strip comprises: a motor for driving a shaft adapted to rotatably rotate at least one drive pulley located below a vertical edge of a parallelepiped-shaped container; a kinematic connection for closing the sealing strip, comprising a combination of cables and tension springs connecting the drive pulleys to the sealing strip; and a kinematic connection for opening the sealing strip, comprising a combination of cables and tension springs connecting the sealing strip to corresponding fixed anchor points on the container. Attached Figure Description

[0010] To better illustrate the innovative principles of this invention and its advantages over the prior art, a possible exemplary embodiment applying these principles will be described below with the aid of the accompanying drawings.

[0011] In the attached diagram:

[0012] Figure 1 A perspective view of the device according to the invention is shown, wherein the banknote support plate is in a fully raised position, i.e., suitable for receiving the first banknote to be introduced into the bag.

[0013] Figure 2 It shows the relationship with Figure 1 A similar view, but in which the banknote support plate is in a lower position, the position where the banknote support plate would be when the bag contains a certain number of banknotes.

[0014] Figure 3 It shows the relationship with Figure 2 A similar view shows the sealing strip being brought to the closed position, where it will seal the bag.

[0015] Figure 4 It shows that according to Figure 2 The front view of the device shows a stack of banknotes in a bag placed on a plate, and a pressure element is inserted into the device and positioned to press down the stack of banknotes.

[0016] Figure 5 , 7 Figures 9, 11, and 13 illustrate the different steps in the filling and closing process of the bag using 3D diagrams.

[0017] Figure 6 , 8 10, 12, and 14 correspond to respectively Figure 5 , 7 The front view of the steps shown in 9, 11, and 13 illustrates the equipment used for filling and sealing the bags.

[0018] Figure 15-16 Enlarged views of the kinematic motion mechanism of the upper part of the device and the sealing strip are shown in the open and closed states, respectively. Detailed Implementation

[0019] In the accompanying drawings, certain parts of the machine are sometimes removed to allow view of the internal components. In particular, one or more container sidewalls are typically omitted, and... Figure 5-14 In the middle, the top cover is shown as a dashed line to make those parts that would otherwise be obscured by it visible.

[0020] Furthermore, for the same reason, and to simplify the design, the bag is only in Figure 4 and Figure 10 , 12 The side views of 14 and 14 are fully shown, and these views show the device when the seal is closed or immediately before the seal is closed.

[0021] This device is intended to be included in well-known machines for storing banknotes (not shown in the accompanying drawings), which are commonly found in banks, supermarkets, shopping malls, or similar places. For simplicity, banknotes are mentioned here, but the device according to the invention can similarly be used to manage and process other sheet-like paper documents.

[0022] from Figure 1-4As can be seen, the device for filling and sealing the bag for holding banknotes basically includes a container 10 that is generally parallelepiped in shape, having side walls 11, a bottom 12 and a top cover 13, the top cover having an opening 14 that is adapted to allow banknotes from the storage area inside the machine that manages and stores banknotes (not shown in the figure because they are known machines themselves) to pass through, or directly from the machine's entrance port, after the authenticity and integrity of the received banknotes have been properly verified.

[0023] The device according to the invention is arranged to receive a bag 15 made of flexible plastic film (as described above, the bag is only shown in the side view for clarity of the diagram) into a container 10 through its upper opening 14.

[0024] Bag 15 can be secured to the machine in known ways, such as by mounting the bag around the top cover and side walls of container 10 itself, or by wrapping or suspending the bag from a possible upper container (which is used to temporarily hold banknotes). Therefore, in the accompanying drawings, the upper end of bag 15 is indicated by an indeterminate dashed line.

[0025] A plate 16 is arranged inside the container 10 to support banknotes 17 inserted into the pouch 15. The plate is vertically movable along a suitable vertical guide 18 by a controlled lowering and raising device (preferably a compression spring 19 shown in the illustrated embodiment).

[0026] The device according to the invention also includes a pressure element 20, which can be raised to a position outside the container 10 (e.g., by means of a suitable control device of a known type (not shown)). Figure 5-8 (as shown) and the lowered position (at least partially inserted into the container 10 through the upper opening 14) Figure 4 and 9 The device moves vertically between the two (as shown in -12) to accompany the banknotes to be introduced into the container, and pushes down a stack of banknotes already present in the bag 15 resting on the plate 16 under the counteracting action of the spring 19.

[0027] Preferably, the pressure element 20 is made with a small thickness so that the two sealing strips are in a "near-closed" position (in Figure 11-12 When visible in the image, it can still be fitted between two sealing strips, which will be described in more detail below.

[0028] Advantageously, the pressure element 20 can therefore be considered as a substantially flat element, i.e., its dimension in the direction of movement toward / away from the sealing strip is much smaller than the other two dimensions (length and height). For example, the thickness of the pressure element 20 can preferably be between 5 mm and 20 mm.

[0029] As previously described, the device according to the invention further includes a pair of sealing strips 21a, 21b, which are arranged at the upper end of the container 10, below the opening 14 of the cover 13.

[0030] The sealing strips 21a and 21b advantageously extend through the entire length of the opening 14 and the banknote support plate 16, so that when the sealing strips come into contact with each other, they can seal the bag over the entire width of the bag at the upper portion of the bag that is inserted between the sealing strips themselves.

[0031] For ease of description, these two sealing strips will also be referred to below as "the first strip" 21a (referring to the strip on the right side of the machine when viewed in the attached diagram) and "the second strip" 21b (referring to the opposite strip on the left side of the machine).

[0032] The movement of the sealing strips 21a and 21b toward / away from each other is achieved by corresponding horizontal groove-shaped guides 22a and 22b located in the upper part of the container 10, corresponding to the ends of the sealing strips themselves and oriented in the direction of movement of the ends of the sealing strips; as Figure 5-14 As clearly shown, the sealing strip has first pins 23a, 23b extending from each end to slide into the aforementioned grooved guides 22a, 22b. Advantageously, further pins 24a, 24b are provided at each end of the sealing strip, which slidably insert into the corresponding grooved guides 22a, 22b to cooperate with the associated pins 23a, 23b to prevent undesirable rotation of the sealing strip and maintain their predetermined mutual alignment.

[0033] exist Figure 15-16 The enlarged view shown above displays the aforementioned components in more detail.

[0034] The groove-shaped guides 22a and 22b are preferably formed as openings in the thickness of the sheet 25, which are arranged at each of the upper ends of the container 10 and extend parallel to the direction of movement of the sealing strip, so as to at least allow the pins 23a and 23b to extend from the respective guides toward the end of the container 10.

[0035] Advantageously, the ends of the slots 22a and 22b closest to the lateral side of the container 10 are bent downwards to allow the resting strip (fully open strip) to tilt in the vertical direction, while remaining essentially housed along the side wall of the container itself without unnecessarily occupying space on the upper horizontal plane of the container, thereby allowing for a reduction in the overall width of the machine.

[0036] According to the invention, the apparatus for filling and sealing bags has systems 21a, 21b for controlling and moving the sealing strip, including a drive motor 26, which is advantageously arranged at the bottom of one side of the machine, such as... Figure 5 ,7 As shown in Figures 9, 11, and 13, the drive motor is adapted to rotate shaft 27, at the ends of which (corresponding to the two ends of the container) are fitted corresponding drive pulleys 28, as can be clearly seen in the above figures.

[0037] The kinematic mechanisms for moving the sealing strips 21a, 21b between their respective open and closed positions will now be described in more detail, with reference to [reference needed]. Figure 5 , 7 The mechanisms visible in the prominent portions of 9, 11, and 13 at the vertical edges of container 10 are understood to be similar or equivalent mechanisms preferably present at the other three vertical edges of container 10 to distribute stress as evenly as possible, thereby allowing the sealing strip to move smoothly and uniformly without the risk of jamming or misalignment. However, mechanisms present at the other edges are also acceptable. Figure 5 , 7 9, 11, 13 and Figure 6 , 8 Partially visible in 10, 12, and 14.

[0038] An actuation cable 29 is wound around the drive pulley 28, which extends upward along the edge of the container 10 until it connects to the lower end of the tension spring 30, which in turn connects to another cable 31 at the upper end. This other cable reaches the first upper return pulley 32 and continues to extend in an almost horizontal direction until it is anchored to the end pin of the second sealing strip 21b (i.e., the sealing strip arranged on the opposite side of the machine relative to the side where the motor 26, drive shaft 27 and drive pulley 28 are located).

[0039] The kinematic connection formed by the spring 30 and the cable 31 is for controlling the closing of the sealing strip (especially the second strip 21b), therefore, the spring 30 and the cable 31 will be referred to here as the "closing spring" and the "closing cable" respectively.

[0040] At the same edge of container 10, another tension spring 33 is arranged, its lower end anchored to a fixing pin 34 on the frame of container 10, and its upper end connected to a cable 35 that reaches a second upper return pulley 36 and then anchors itself to the end pin 23a of the first sealing strip 21a (i.e., the sealing strip arranged on the side of the machine where the motor 26, drive shaft 27 and drive pulley 28 are located).

[0041] The kinematic connection formed by the spring 33 and the cable 35 is for controlling the opening of the sealing strip (especially the first strip 21a), so the spring 33 and the cable 35 will be referred to here as the "opening spring" and the "opening cable" respectively.

[0042] In order for the sealing strip to function properly when opening and closing, the closing spring 30 will have a larger elastic constant than the opening spring 33. In other words, in the aforementioned kinematic mechanism, the closing spring 30 must apply a greater force than the opening spring 33.

[0043] Advantageously, the springs 30, 33 (and the corresponding cables 31 and 35) are separated from each other by a separator 37 extending vertically along the edge of the container 10 to avoid mutual interference between the parts.

[0044] As shown in the figure, the opening spring 33 and the opening cable 35 act directly on the first sealing strip 21a (i.e., the strip arranged on the same side of the container 10 where the actuating element is located), while the closing spring 30 and the closing cable 31 act on the second sealing strip 21b (i.e., the strip arranged on the opposite side of the container 10).

[0045] To achieve good synchronization of movement of the two sealing strips, similar opening springs 33' and opening cables 35' are advantageously provided at opposite edges of the container 10 (i.e., on one side of the second sealing strip 21b) and anchored to the corresponding end pins 23b of the second sealing strip 21b, while further closing springs 30' and closing cables 31' are provided at the same opposite edges of the container 10 and anchored to the corresponding end pins 23a of the first sealing strip 21a.

[0046] In order for the closing spring 30' to move along the opposite edge of the container 10 as the actuation cable 29 described above does, the drive pulley 28 is connected to the lower end of the closing spring 30' via a corresponding auxiliary actuation cable 29' which extends horizontally from the corresponding drive pulley 28 located below the bottom 12 of the container 10 until a third lower return pulley 38 located at the bottom of the opposite edge, from which the third lower return pulley bends upward until it reaches the closing spring 30'.

[0047] The corresponding upper return pulleys 32' and 36', the pin 34' for anchoring the opening spring 33', and the separator 37' between the opening spring and the closing spring are naturally present at the aforementioned opposite edges of the container 10.

[0048] exist Figure 6 , 8 The aforementioned kinematic elements can be clearly seen in 10, 12, and 14.

[0049] This allows the sealing strip to achieve complete actuation symmetry.

[0050] According to the invention, the device for filling and sealing bags is further provided with sensors to detect certain positions that the sealing strip may appear during machine operation, particularly a "strip open" sensor 39 suitable for cooperation with a slider 41 capable of moving integrally with the sealing strip. Figure 11 and 13 (visible in the middle) and "almost closed bar" sensor 40 (in Figure 5 , 7 (See in 9 and 11).

[0051] According to the preferred embodiment shown in the accompanying drawings, position sensors 39 and 40 are arranged vertically spaced apart on one side of container 10 (e.g., the side where motor 26, drive shaft 27, and drive pulley 28 are located), and slider 41 includes a horizontal sheet constrained to open cable 35 for vertical movement between two positions according to the movement of bar 21a: wherein the sheet covers lower sensor 39, so that lower sensor can send an "open bar" signal (corresponding to...) to control unit. Figure 5 , 7 The position of (as shown in case 9); and wherein the sheet covers the upper sensor 40, so that the upper sensor can send a "nearly closed bar" signal (corresponding to) to the control unit. Figure 11 The location shown in the figure.

[0052] A portion of the machine's operating cycle will now be briefly described to illustrate the operation of the apparatus for filling and sealing bags according to the present invention.

[0053] exist Figure 5 and Figure 6 In the case shown, some banknotes 17 have been introduced into the container 10 through the upper opening 14 and stacked on the board 16 in the plastic bag (as mentioned above, for clarity of the diagram, the bag 15 is generally omitted in the perspective view, only in the final stage involving closing the bag). Figure 10 , 12 (As shown in 14). The sealing strips 21a and 21b are open (and therefore, the "open strip" sensor 39 remains covered by the slider 41 in its lowest position), the plate 16 is pushed upwards by the spring 19, while the banknote 17 is pressed against the lower surface of the cover 13. It should be noted that from... Figure 1-3 As can be clearly seen, the opening 14 in the cover 13 is shaped to be narrower than the narrowest banknote intended to be stored in the machine, so that once the banknote is inserted into the bag supported by the plate 16, it cannot overflow from the container 10 despite the pressure applied by the spring 19. One or more new banknotes 17 are arranged above the cover 13, ready to be subsequently introduced into the bag by the pressure element 20.

[0054] exist Figure 7 and Figure 8 In the illustrated case, pressure element 20 is lowered until it contacts the further banknotes 17 present above cover 13, and as the pressure element is further lowered, it begins to deform the further banknotes, pushing them through opening 14 into the bag and into container 10. Sealing strips 21a and 21b remain open, in contact with... Figure 5 and Figure 6 The same position. This operation of introducing new banknotes through opening 14 can be repeated until the bag is considered to have reached the desired maximum filling level.

[0055] exist Figure 9 and Figure 10 In the case shown, the last banknote has been introduced into bag 15, and the further lowering of pressure element 20 causes the plate 16 on which the bag is placed to be further lowered. In this way, banknote 17 is held at a position at a certain distance from the lower surface of cover 13 by pressure element 20 inserted into container 10 through opening 14 (in particular, far enough away from the operating area of ​​sealing strips 21a, 21b).

[0056] At this time, motor 26 can control the rotation of shaft 27 and drive pulley 28, thereby causing actuation cable 29 and auxiliary cable 29' to pull down closing springs 30, 30'. Since the elastic constant of the closing spring is greater than that of the opening springs 33, 33', the corresponding closing cables 31, 31' can move sealing strips 21b and 21a to the closed position respectively. At the same time, the movement of the two sealing strips 21a, 21b causes the corresponding opening springs 33, 33' to extend upward through opening cables 35, 35'.

[0057] Figure 11 and 12 The diagram shows the situation immediately preceding the sealing strip reaching the "nearly closed" position, which occurs when slider 41 covers the "nearly closed" strip sensor 40 and the strip is almost in contact with the side of pressure element 20. When the sealing strip is in the "nearly closed" position, pressure element 20 can be pulled out of the container by moving upwards, but the small gap between the two sealing strips 21a, 21b (which substantially corresponds to the extremely thin thickness of pressure element 20) does not allow banknotes to accidentally spill out of the bag and incorrectly position themselves between the sealing strips.

[0058] Figure 13 and 14 The final step is shown, in which the pressure element is fully pulled out of the container, and the banknotes inside bag 15 are pressed against the sealing strip by spring plate 16. At this point, sealing strips 21a and 21b can be fully closed and heated, thereby sealing bag 15. At the end of this process, the sealing strips are reopened, and the closed bag is ready to be removed from container 10.

[0059] It is now clear that the device according to the invention for filling and sealing bags containing banknotes achieves its intended purpose by minimizing the space required for the sealing strip and its control kinematic mechanism. Furthermore, such a thin pressure element allows it to be pulled out of the container 10 with the sealing strip in a nearly fully closed position, thereby preventing any banknotes from spilling out when the pressure element is removed and accidentally becoming lodged between the sealing strips during the bag-sealing process.

[0060] Obviously, the above description of embodiments applying the innovative principles of this invention is given by way of illustrative example of such innovative principles, and therefore should not be considered as a limitation on the scope of the patent claimed herein.

[0061] For example, the kinematic chain comprising springs and cables described herein can be made in different configurations, although kinematically equivalent to the configuration illustrated.

[0062] In particular, because, as can be seen, the springs 30, 30' used for closing the kinematic connection of the sealing strip must provide a greater elastic force than the springs 33, 33' used for opening the kinematic connection to ensure proper operation of the system and sufficient closing force for the sealing strip, the aforementioned springs 30, 30' used for closing the kinematic connection of the sealing strip can also be conceived to have an infinite elastic constant, and therefore, for example, can be replaced by cables or equivalent components. Therefore, the entire kinematic connection of the sealing strip may comprise a single actuating cable, which still falls within the scope of the invention claimed.

Claims

1. An apparatus for filling and sealing a bag for containing banknotes, the apparatus comprising a generally parallelepiped container (10) having sidewalls (11), a bottom (12), and a top cover (13) having an opening (14) adapted to allow a bag (15) to enter the container, the bag comprising a flexible plastic film and banknotes (17) intended to be introduced into the bag, the apparatus further comprising a plate (16) disposed within the container (10) for supporting the banknotes (17) inserted into the bag (15) and capable of vertical movement by a controlled lowering and lifting device (19), a first sealing strip and a second sealing strip (21a, 21b) disposed at the upper end of the container (10), below the opening (14) of the top cover (13), and movable toward or away from each other between an open position and a closed position, wherein in the open position, the first sealing strip and the second sealing strip (21a, 21b) 21a, 21b) are spaced apart to allow banknotes to be introduced into the container (10) through the opening (14). In the closed position, the first and second sealing strips (21a, 21b) are in contact with each other to seal the upper portion of the bag (15) inserted therebetween. The device also includes a pressure element (20) capable of vertically moving, according to instructions, between a raised position located outside the container (10) and a lowered position for at least partially inserting the banknotes into the container (10) through the upper opening (14), to accompany and push down banknotes already present in the bag (15) resting on the plate (16) as new banknotes are to be introduced into the container. The device also includes a control and movement system for controlling and moving the first and second sealing strips (21a, 21b) between corresponding open and closed positions. The control and movement system for the first and second sealing strips (21a, 21b) includes: a motor (26) for driving a shaft (27) adapted to rotate at least one drive pulley (28) arranged below corresponding to the vertical edge of the parallelepiped container (10); a kinematic connection for closing the first and second sealing strips, including a combination of cables and tension springs (29, 29', 30, 30', 31, 31'); and a kinematic connection for opening the first and second sealing strips, including a combination of cables and tension springs (33, 33', 35, 35').

2. The device according to claim 1, characterized in that, In the upper portion of the container (10), grooved guides (22a, 22b) oriented along the movement direction of the first and second sealing strips are provided at both ends of the container. The first and second sealing strips (21a, 21b) have corresponding first pins (23a, 23b) protruding from each end to slide into the corresponding grooved guides (22a, 22b). The kinematic connection for closing the first and second sealing strips includes: a first sequence of cables and tension springs (29, 30, 31) connecting a drive pulley (28) to one of the protruding pins (23b) of the second sealing strip (21b), the second sealing strip being arranged on the opposite side of the container (10) relative to the vertical edge where the drive pulley (28) is located; and a second sequence of cables and tension springs (29', 30', 31'). Cables and tension springs connect one of the protruding pins (23a) of the drive pulley (28) and the first sealing strip (21a), which is arranged on one side of the vertical edge of the container (10) where the drive pulley (28) is located, and wherein the kinematic connection for opening the first and second sealing strips comprises: a first sequence of cables and tension springs (33, 35) for opening the kinematic connection of the first and second sealing strips, the first sequence of cables and tension springs for opening the kinematic connection of the first and second sealing strips connecting the protruding pin (23a) of the first sealing strip (21a) to a corresponding fixed anchor point (34); and a second sequence of cables and tension springs (33', 35') for opening the kinematic connection of the first and second sealing strips connecting the protruding pin (23b) of the second sealing strip (21b) to a corresponding fixed anchor point (34').

3. The device according to claim 2, characterized in that, The first sequence of cables and tension springs for closing the kinematic connection between the first and second sealing strips includes a first actuation cable (29) extending upward from a drive pulley (28) along the aforementioned vertical edge of the container (10) where the drive pulley is located, until it connects to the lower end of a tension spring (30), which in turn connects to another cable (31) at its upper end, which reaches a first upper return pulley (32) to continue extending in a nearly horizontal direction until it is anchored to the protruding pin (23b) of the second sealing strip (21b), and wherein the second sequence of cables and tension springs for closing the kinematic connection between the first and second sealing strips... The cable and tension spring include an auxiliary actuation cable (29') extending from a drive pulley (28) below the bottom (12) of the container (10) to a lower return pulley (38) placed at the bottom of the vertical edge of the container (10) opposite the side where the drive pulley (28) is located, and bending upward from the lower return pulley until it connects to the lower end of a tension spring (30'), which in turn connects to another cable (31') at its upper end, which reaches its own corresponding upper return pulley (32') to continue extending in a nearly horizontal direction until it is anchored to the protruding pin (23a) of the first sealing strip (21a).

4. The device according to claim 2, characterized in that, The first sequence of cables and tension springs for opening the kinematic connection between the first and second sealing strips includes a tension spring (33) corresponding to the vertical edge of the container (10) where the drive pulley (28) is located, the lower end of the tension spring being anchored to the fixed anchor point (34) and connected at the upper end to a cable (35) reaching a second upper return pulley (36) to subsequently anchor itself to the protruding pin (23a) of the first sealing strip (21a), and wherein the second sequence of cables and tension springs for opening the kinematic connection between the first and second sealing strips includes a tension spring (33') at the opposite edge of the container (10), the lower end of the tension spring being anchored to a corresponding fixed anchor point (34') and connected at the upper end to a cable (35'), the cable reaching its own corresponding upper return pulley (36') to subsequently anchor itself to the protruding pin (23b) of the second sealing strip (21b).

5. The device according to claim 1, characterized in that, The shaft (27) driven by the motor (26) has drive pulleys (28) at both ends, and corresponding kinematic connections for closing the first and second sealing strips and corresponding kinematic connections for opening the first and second sealing strips are associated with each pulley (28).

6. The device according to claim 2, characterized in that, The cables and tension springs (29, 30, 31, 29', 30', 31') for closing the kinematic connection of the first and second sealing strips are separated from the cables and tension springs (33, 35, 33', 35') for opening the kinematic connection of the first and second sealing strips located at the same vertical edge of the container (10) by separators (37, 37').

7. The device according to claim 2, characterized in that, Further pins (24a, 24b) are present at each end of the first and second sealing strips (21a, 21b), which are slidably inserted into the corresponding slotted guides (22a, 22b).

8. The device according to claim 7, characterized in that, The grooved guides (22a, 22b) are formed as openings extending parallel to the direction of movement of the first and second sealing strips (21a, 21b) on the thickness of the sheet (25) at each of the upper ends of the container (10), and at least the first pin (23a, 23b) extends from the corresponding grooved guides (22a, 22b) toward the end of the container (10).

9. The device according to claim 2, characterized in that, The ends of the grooved guides (22a, 22b) closest to the lateral side of the container (10) are bent downward so as to allow the first and second sealing strips (21a, 21b) to be arranged at an angle when in the fully open position.

10. The device according to claim 1, characterized in that, In the approach / removal direction of the first and second sealing strips (21a, 21b), the thickness of the pressure element (20) is between 5 mm and 20 mm, which is sufficient to determine the position of the "almost closed strip" of the first and second sealing strips (21a, 21b) when the pressure element (20) is partially inserted into the container (10) through the opening (14).

11. The device according to claim 1, characterized in that, The controlled lowering and raising device (19) for the plate (16) includes a compression spring.

12. The device according to claim 1, characterized in that, The device includes position sensors (39, 40) for detecting the positions of the first and second sealing strips (21a, 21b).

13. The device according to claim 12, characterized in that, The position sensors (39, 40) are arranged vertically spaced on one of the sides of the container (10) and can cooperate with the slider (41), wherein the slider can move integrally with the first and second sealing strips.

14. The device according to claim 1, characterized in that, The tension springs (30, 30') used for closing the kinematic connection between the first and second sealing strips (21a, 21b) have a greater elastic force than the tension springs (33, 33') used for opening the kinematic connection between the first and second sealing strips.

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