DE9001821U1 - Plastic filling nozzle - Google Patents

Description

Plastic filling nozzle

The innovation concerns a filling nozzle made of plastic with a flexible plastic bag, whereby the filling nozzle is "impossible to pass through" a corresponding opening ⁱⁿ a wall part of the dimensionally stable container for the plastic bag.

Filling nozzles of the above type have already proven their worth in practice. For example, liquid detergent is filled into plastic bags with the liquid plastic filling nozzles, with the entire ^plastic bag with contents and filling nozzle being inserted into a cuboid cardboard box ^. In this way, the filled box can be stacked in a manner that is convenient for storage and shipping. The filling nozzle has a corresponding cover cap to prevent the contents from running out. To empty the box, a cardboard tab must be pulled up at a point provided for this purpose, so that the filling nozzle can be lifted out of the opening created and pushed into an elongated hole that is open on one side and has a corresponding circumferential groove. This The torn cardboard flap is then pressed down again, so that the filling nozzle is prevented from slipping out of the open side of the slot. This packaging with the associated construction of the filling nozzle requires a lot of explanation for the consumer, so that incorrect use is not uncommon. In addition, the

Filling the plastic bag is difficult because if the plastic bag is already in the cardboard box before the filling process, it is difficult to keep the filling nozzle in the correct filling position. This problem is made even worse if the plastic bag is first filled and then the cardboard box is moved around the plastic bag.

Based on this situation, the innovation is based on the task of proposing a filling nozzle of the type described above, which is held securely in place by simple means.

This task is solved in accordance with the innovation in that the filling nozzle is inserted into a sufficiently large hole in the wall part and the part that protrudes on the outside is connected to an additional locking piece that rests on both the filling nozzle and the wall part mentioned, thus holding the filling nozzle in position. With this simple means, the filling nozzle can be held securely in a corresponding hole in the packaging, so that the still empty flexible plastic bag in the packaging can be filled without any problem.

The filling nozzle can of course be designed in such a way that it can carry a closure or a closure cap and

§ * can be sealed tightly. The construction is also

so variable that the locking piece can also serve as an authenticity safeguard.

Advantageous embodiments of the innovation can be found in subclaims 2 to 19.

_u The innovation will now be illustrated using various implementation examples that are

shown in the drawings.

Show it:

Figure 1 Longitudinal section through a filling nozzle

Figure 2 Longitudinal section through a filling nozzle with cover

cap

Figure 3 Longitudinal section through a filling nozzle with cover

cap and tamper evident

Figure &Igr; Longitudinal section through a filling nozzle with

piece and authenticity assurance

Figure ^a Detail X to Figure U

Figure 5 Longitudinal section through a filling nozzle

Figure 6 Longitudinal section through a filling spout with pouring

piece as tamper evident

Figure 6a Detail Y according to Figure 6

Figure 7 Top view of a filling nozzle with clamp-type

gem locking piece

Figure 8 Top view of a filling nozzle without locking piece

Figure 9 stackable container with inclined surface and filling

trim in perspective

Figure 1 shows a simple filling nozzle in longitudinal section with an unspecified filling opening and an external thread 48 for a sealing lid that may be used. The external thread i»8 ends at the bottom in an outlet groove, which is followed by a circumferential collar II. The diameter of this circumferential collar can be larger than the diameter of the external thread. The circumferential collar 11 is followed at the bottom by an unspecified outlet groove, which is followed by a centering seat 27. A wall part 8, for example made of corrugated cardboard of a cardboard box, has an opening with a diameter corresponding to the centering seat 27 and the filling nozzle 1 is guided through this opening until the centering seat 27 is centered in the aforementioned opening of the cardboard box 8. In this position, the cardboard box rests on the unspecified lower edge of the filling nozzle, which is connected to the flexible plastic bag. The opening of the cardboard box can be smaller in diameter than the diameter of the surrounding collar 11. The cardboard box is usually sufficiently

elastic to bridge such a diameter difference.
A ring collar 20 is used as the locking device IO, which is designed as a circular disk with a sufficiently large central opening and is curved like a disk spring. The opening 26 mentioned is in turn smaller in diameter than the surrounding collar 11. Various measures are possible so that the opening 26 can still be pushed over the surrounding collar 11. It is conceivable that the ring collar 20, which is made of a relatively elastic plastic, follows a corresponding widening of the opening 26 so that this opening 26 can be pushed over the ring collar 11, whereupon this opening 26 then contracts again. However, it is also conceivable that the ring collar 20 has a series of radial incisions distributed around the circumference of the opening 26 so that the opening 26 can widen.
However, it is also conceivable to design the circumferential collar as shown in Figure 8. There, a filling nozzle 7 is shown in plan view, which could correspond completely to the filling nozzle 1. In contrast to the filling nozzle 1, the filling nozzle 7 does not have a closed circumferential collar 11, but rather a circumferential collar 14, which is interrupted by incisions 19 running parallel to one another, so that only tongues 18 remain of a closed circumferential collar. These tongues 18 are then relatively flexible and can bend over when a ring collar 20 is slipped over, thereby assuming a smaller diameter. After the ring collar 20 has been completely slipped over

these tongues 18 can straighten up again and can thus serve as an abutment for a locking piece 10 designed as a ring collar 20. The incisions 19 are all sensibly arranged with their main direction parallel to one another and perpendicular to a longitudinal section plane of the filling nozzle, because this makes it possible to demold the mold in a mold that is only divided into two parts.

The ring collar 20, once it has gripped the surrounding collar 11 and is supported on it, rests with its outer area on the outer surface of a wall part 8 and thus always pulls the filling nozzle 1 outwards, or at least holds it in position. The wall part 8 is thus always clamped between the

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Ring collar 20 on the one hand and the inner collar 49 with the plastic bag 50 on the other hand. The ring collar ZO can have locking cams 51 distributed on the outer lower circumference, which can penetrate into the outer layer of a coarse corrugated cardboard as wall part 8, so that even increased pressure from the outside against the filling nozzle 1 cannot push it back, because up to a certain limit the ring collar 20 is prevented from flattening due to the locking cams 51 penetrated into the corrugated cardboard. At the same time, a certain range of the thickness of the wall part 8 can be controlled with the tension of the curved ping collar 20.

Figure 2 shows an embodiment similar to Figure 1. The filling nozzle 2 also has an external thread 48, which can also be designed as a bayonet closure, so that the filling nozzle 2 can be covered by a cap 52.

Instead of the circumferential collar 11 according to Figure 1, the filling nozzle 2 according to Figure 2 has an external thread 15, which is arranged and ends above a centering seat 27. A flat ring collar 21 is provided as the locking piece 10, the opening 26 of which is adapted to the external thread 15, so that the ring collar 21 can be screwed on like a threaded nut and thus brought into contact with the outside of a wall part 8. A centering seat 27 ensures the correct position here too. For the ( ) tightening process, the ring collar 21 can be screwed on like a grooved nut with

The wall part 8 can be provided with grooves 53 distributed around the circumference. This also means that the wall part 8 is pressed against the inner collar 49 of the filling nozzle 2 with the plastic bag 50 and held in place. The filling nozzle 2 is again held securely in its position. It is also conceivable to design the ring collar 21 to be as curved as the ring collar 20.

Another variant is shown in Figure 5, whose filling nozzle 5 is designed very similarly to the filling nozzle 1 according to Figure 1. The filling nozzle 5 also has a circumferential collar 13, the diameter of which, however, corresponds to the diameter of the external thread 54 of the

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filling nozzle 5. Below the circumferential collar 1 3 there is again a circumferential groove, which is again connected to a centering piece 27, which, however, is lower in height than the wall material 9 to be clamped, so that a certain thickness range of this wall material 9 can be controlled.
In the embodiment according to Figure 3, a flat ring collar 24 serves as the locking piece 10, the opening 26 of which is smaller in diameter than the diameter of the circumferential collar 13. The possibilities of nevertheless slipping the ring collar 24 over the circumferential collar 13, which has a larger diameter, have already been described above.

Figure 3 again shows a filling nozzle 3 with a closed circumferential collar 12. In the upper end area, an external thread 55 is provided for a cap 56. This cap 56 is connected to an annular collar 22 via a large number of tabs distributed in the circumferential direction at its lower end, the shape of which essentially corresponds to the annular collar 20. Here, too, the external diameter of the circumferential collar 12 is larger than the internal diameter of the opening 26 of the annular collar 22. If the cap 56 is now put on, the annular collar 22 can be guided over the circumferential collar 12 and snap into place behind it. The wall part 9 ^is now held by the annular collar 22 as was already described for Figure 1. At the same time, however, tamper evidence is now achieved. If the cap 56 is unscrewed or removed, the tabs 55 are destroyed and tear off the ring collar 22, which remains in its position. Since the outer diameter of the circumferential collar 12 can also be kept larger than the diameter of the opening in the wall part 9 and thus larger than the diameter of the centering seat 27, the circumferential collar 12 alone can prevent the filling nozzle 3 from slipping back into the cardboard container with sufficient security for a filling process. For later use and the emptying process, the filling nozzle 3 is held in an exact position by means of the ring collar 22.

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The embodiment according to Figure 4 also allows for tamper-evident protection. However, in this embodiment, unless special aids are to be used, the plastic bag 50 belonging to the filling nozzle k must first be filled, after which the cardboard packaging is built around the filled plastic bag. Finally, a pouring piece 32 is attached, which cannot be |

can no longer be removed. For this purpose, the filling nozzle has k %

at least one outer annular groove 16 into which an inner bead 28 can snap. This inner bead 28 is located on a bushing 30 which widens out considerably towards the bottom and thereby forms an annular collar 23 which can be curved in the same way as the annular collar 20 according to Figure 1. If this bushing 30 is now pushed onto the filling nozzle 4 from the outside, the inner bead 28 can snap into the outer annular groove 16. Ring-shaped flat surfaces 57 which lie against one another and are perpendicular to the central axis of the filling nozzle ensure that the connection is undetachable. At the same time, when this snaps in, at least the outer peripheral region of the annular collar 23 comes into contact with the surface of the wall part 9, so that the filling nozzle 4 is held in position again. k The bushing 30 is connected to the wall part 9 via an annularly formed intermediate piece 35 with '? a pouring piece 32 in one piece, whereby this pouring piece 32 is inserted into the opening of the filling nozzle 4 with an inner ring 58. The filling nozzle 4 has a conically widened area 36 in its outer area, which works together with a correspondingly conical area 39 of the inner ring 58. In the locked position, the two conical surfaces lie against one another in a sealing manner. The angle of inclination or cone angle of this cone is so small that it is below the self-locking. At the same time, however, the elasticity of the plastics used ensures that the inner bead 28 can also be pushed further into the next outer annular groove 17 of the filling nozzle 4 if a wall part 9 of very small thickness is used. The pouring piece 32, which is thus brought into position in a sealing and non-detachable manner, is closed in its pouring cross-section with a cover ring 3<i, which serves here as an authenticity seal. The cover 34 can, however, easily be removed by means of an eyelet 59, so that the pouring cross-section is free. Pouring can be done via the

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Pouring aid 60 makes pouring easier. At the same time, the pouring cross-section can be tightly closed again using a lid 61. The lid 61 can be molded onto the bushing 30 using a thin plastic band 62. Here, too, the filling nozzle 4 is held securely in position and at the same time an authenticity guarantee is created.

A variant of the design according to Figure 4 is shown in Figure 6. The embodiment according to Figure 6 shows a filling nozzle 6 which is guided through a corresponding opening in a wall part 9 in the manner already described several times, the filling nozzle 6 also having a correspondingly dimensioned centering seat 27. In the embodiment according to Figure 6, the filling nozzle 6 also has a first outer annular groove 16 and a second outer annular groove 17 at a short distance from one another. A bushing 31, which widens in its lower region so that it forms an annular collar 25, also encloses the outer peripheral surface of the filling nozzle 6 and has an inner bead 21 on its inside which can snap into the outer annular groove 16, as has already been described for Figure 4. In addition, however, the filling nozzle 6 has a ring-shaped nose 40 on its wall surrounding the inner opening, which can snap into a corresponding ring groove 41 in the area of the lower end of a pouring piece 33. The plane surfaces on the ring-shaped nose 40 and on the ring groove 41 come into contact with one another, so that the pouring piece, once inserted and snapped into place, cannot be pulled out again. In order to achieve more precise insertion without bending the front nose edge of the ring-shaped nose 40, slots 42 running longitudinally from bottom to top are provided in the lower area of the pouring piece 33, in which the ring groove 41 is provided, so that a large number of individual and thus somewhat softer tongues are created. This makes snapping into place easier without reducing the security of the snapping into place.

_a «tt · e· mi «&diams; * ·

- 14 -

In order to achieve the desired tightness, the filling nozzle 6 is again provided with a conically expanded region 37 in its outer opening region, which corresponds to a conical region 38 on the pouring piece 33. Here too, the cone angle or angle of inclination of each cone is the same and smaller than the self-locking angle. In order to ensure that the pouring piece 33 sits securely and straight and without jamming when inserted, the pouring piece 33 has a circumferential stop collar 43, which comes to rest with its lower flat surface on the outer flat front side 44 of the filling nozzle 6 exactly when the nose 40 is aligned with the annular groove 41. This ensures that the two sides of the pouring piece 35 on the one hand and the filling nozzle 6 on the other hand are in an unjammed position ^. ^rect position. The

The outer dimensions are such that in order to achieve the correct fit, the corresponding opening in the filling element 6 must be slightly widened and is therefore under tension. At the same time, this possibility of widening, i.e. the elastic behavior of the plastic, renders ineffective the existing over-determination, which would otherwise make a correct fit impossible.

The opening cross-section of the pouring piece 33 is again closed with a thin cover 34, which can also be torn out here via an eyelet 59. The then free opening of the pouring piece 33 can also be sealed with a cover 61, which is attached to the

Pouring piece 33 can be attached. This construction enables, on the one hand, the filling support 6 to be properly locked in the open state via the ring collar 25, so that the empty plastic bag can be inserted into the packaging and then filled. After filling, the pouring piece 33 can be inserted and permanently locked into place, so that a tight seal is created with an authenticity guarantee.

Figure 7 shows a plan view of a simple variant of a locking piece 10. According to Figure 7, a locking piece 10 is designed as a simple flat clamp W. A view in the direction of the arrow according to Figure

It *

7 could represent Figure 5. The legs 63 of the bracket 47

&bull;&ngr; also enclose an opening 26 (Figure 5) for the most part and

have an inlet opening between them at their front ends, through which, for example, the filling nozzle 5 can be pushed

&ogr; can- Here the bracket hl **> is set so that it is at the level of the

Circumferential groove under the circumferential* i.projection 13 and a thickness

iw, which is smaller than the width of this circumferential groove. After the

When pushed on, the clamp is in the position shown in Figure 7

% arrangement and thus has the same throw as, for example, the ring collar

;■ 21. The clamp 47 can be rotated so that the free

Tongue surface 6* can serve as a drip guard when pouring. The

■ ■ -. Clamp 47 can not only, like all other locking devices,

; pieces, made of a suitable plastic. Rather,

also a formation from a sufficiently thick and solid cardboard very

^tt be useful. Such a cardboard box, which is very easy to make,

Clamp 47 can advantageously be connected to the wall part 9 with a glue point 66 after it has been pushed into position and can thus fulfil its main function. This has particular advantages when disposing of the empty container. The glue point can be easily torn open so that the clamp 47 is in position on the one hand and can be removed again with a small tug on the other.

can be easily separated and disposed of separately

To facilitate this, the legs 63 should have an inner

' \ opening limitation as indicated by the dashed lines 67

shown in Fig. 7. This opening width corresponds to the diameter to be enclosed on the filling nozzle 5, so that the clamp 47 can be easily pushed on.

Figure 9 shows a cardboard box 65 with a flexible plastic bag arranged therein, which is connected to a filling nozzle 1, whereby this filling nozzle I is guided through a corresponding opening of a slanted wall part 9 and is secured in its position there with a locking piece IO of the type described here. &igr; Here, the slanted arrangement of the wall part 9 is particularly

advantageous because it allows the cardboard packaging to be filled despite the locked filling

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The nozzle remains stackable. In principle, however, such filling nozzles can of course be passed through any wall of the cardboard box and locked in place.

List of used revocation symbols

1 filling nozzle

2 filling nozzles

3 Filling nozzle U Filling nozzle

5 filling nozzles

6 Drain nozzles

7 Filling nozzle

8 Wall part

9 Wall part

10 Locking piece

11 all-round collar

12 all-round collar

13 all-round collar

15 external thread

16 outer ring groove

17 outer ring groove

18 tongues

19 incisions

20 ring collars

21 Ring collar

22 Ring collar

23 Ring collar 2&Iacgr; Ring collar

25 Ring collar

26 Opening

27 Centering seat

28 inner bead

29 inner bead

30 socket

31 socket

32 Pouring piece

33 Pouring piece

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34 Lid

35 Intermediate piece

36 conically extended area

37 conically extended area

38 conical area

39 conical area

40 ring-shaped nose

41 Ring groove

42 slots

43 Stop collar

44 outer front side

45 tabs

46 unused

47 Bracket

48 external thread

49 inner collar

50 plastic bags

51 locking cam

52 cap

53 grooves

54 external thread

55 external thread

56 cap

57 plan surfaces

58 Inner ring

59 Eyelet

60 Pouring aid

61 Lid

62 plastic ribbons

63 legs

64 Tongue surface

65 cardboard boxes

66 glue point

67 dashed line

Claims (21)

PATENT ATTORNEY MANFRED.:UeRMAW · '::": &igr;'."..'. ! .' · ■■·'· «TW*««i(t'«2i) ! 74 46 +■ 174 EUROPEAN PATENT ATTORNEY .:.·..' '..'.:.. ..·"·.' AUTHORIZED REPRESENTATIVE AT THE EUROPEAN PATENT OFFICE Fax (0?4 21) 178 B/ Düren - Josef-Schregel-Straße 19 ^{Teletfix ?42M17 ;üerman} felegiarr'ne: Lierpal"Ml Düren Postal check Cologne 3O&7 15-500 Attorney at law M. Llermann · Josef-Schregel-Straße 19 ■ D-5160 Düren (bank code 370 100 50) Deutsche Bank AG Dürpn R! 1 09 ^r >9 Registered mail (bank code 395 7oo 61) To the German Patent Office Zweibrucxenstr. 12 8000 Munich 2 Your characters Your message My characters Düren (516)/sc 13 February 1990 Utility model application Applicant: Sieger Plastic GmbH
Farbmühlenstr. 11
5160 Dueren Title: Plastic filling nozzle Protection claims I. Filling nozzle made of plastic with a flexible plastic bag!, wherein the filling nozzle can be guided through a corresponding opening in a wall part of a dimensionally stable receptacle for the plastic bag, characterized in that the filling nozzle (1-7) is inserted into a sufficiently large bore in the wall part (8,9) and the part projecting outwards is connected to an additional locking piece (10) which is supported both on the filling nozzle (1-7) and on the said wall part (8,9), and thereby the filling nozzle (1-7) in holds position. 2. Fastening according to claim 1, characterized in that the externally projecting part of the filling nozzle has an abutment for the locking piece j3 (10) at a distance from the | outer surface of the wall part, j 3. Device according to claim 2, characterized in that the abutment is designed as a circumferential collar (10-14). 4. Device according to one of claims 1 and 2, characterized in that the abutment is formed by an external thread (15) for the locking piece (10). 5. Device according to one of claims 1 and 2, characterized in that the abutment is formed by an outer annular groove (16, 17). 6. Device according to claim 3, characterized in that the circumferential collar (14) has a plurality of incisions (19) for forming tongues (18). 7. Device according to one of claims 1 to 6, characterized in that the locking piece (10) is designed as an annular collar (20-25) with a central, circular opening (26), this central opening (26) having a diameter smaller than the diameter of an abutment designed as a collar (11-14) or thread (15). 8. Device according to claim 8, characterized in that the ring collar (20, 22, 23, 25) is curved in the manner of a disc spring and consists of plastic. 9. Device according to one of claims 1-8, characterized in that the filling nozzle (1-7) has a centering seat (27) below the abutment at a distance from the latter, the diameter of which matches the diameter of the wall part (8, 9). 10. Device according to claim 9, characterized in that the &bull;the outer diameter of the centering seat (27) is smaller than the outer diameter of the circumferential collar (11,14) or the external thread (15). 11. Device according to one of claims 1 and 7-10, characterized in that the abutment is designed as an outer annular groove (16, 17) of the filling nozzle (4, 6). 12. Device according to claim 11, characterized in that an inner bead (28, 29) of a bushing (30, 31) engages in the outer annular groove (16 or 17), which bushing has a circumferential collar (23, 25) at its end closest to the wall part, which, when the inner bead (28, 29) is in the annular groove (16, 17), rests at least partially on the surface of the wall part (8, 9). 13. Device according to claim 12, characterized in that a pouring piece (32, 33) can be inserted into the opening of the filling nozzle (4, 6) in a sealing manner and, after use, can be permanently inserted, the inner cross section of the pouring piece (32, 33) being closed with a thin, tear-open cover (34). 14. Device according to claim 12 and 13, characterized in that the bushing (30) and the spout (32) are formed in one piece, the bushing (30) being connected to one another at its end facing away from the collar (23) to produce the one-piece design via an annularly formed intermediate piece (O3). 15. Device according to one of claims 12 to 14, characterized in that the opening of the filling nozzle (6) has an inwardly projecting annular nose (40), while the pouring piece (33) has an outer annular groove (41) corresponding thereto, for producing a non-detachable connection after the two parts (33) have been pushed together. 16. Device according to one of claims 12 to 15, characterized in that the pouring nozzle (3..S) has a conical section (36,37) widening outwards and that the pouring piece (32,33) has a conical region (38,39) converging thereto, the cone angle of the conical regions ^being equal to one another and smaller than a self-locking angle. 17. Device according to one of claims 12 to 16, characterized in that the pouring piece (33) has a plurality of slots (42) distributed around the circumference from its underside running in the longitudinal direction and extending at least into the outer annular groove (41), while above this annular groove (41) a stop collar (43) is provided for contact with the outer end face (44) of the filling nozzle (6). 18. Device according to one of claims 1 to 12, characterized in that the ring collar (22) is connected on its upper side via a plurality of tabs (45) to a cap (56) with a thread or bayonet closure, the connection being designed so weak that when the cap (46) is opened the tabs (45) tear off. 19. Device according to one of claims 1 to 6, characterized in that the locking piece is designed as a flat clamp (47) open on one side. &bull; ■ · · % 20. Device according to one of claims 1 to 19, characterized in &iacgr; characterized in that the locking piece consists of a sufficiently elastic I plastic. Jf 21. Device according to claim 19, characterized in that the H one-sided open clamp (ft7) made of a sufficiently thick and t solid cardboard and fixed in position by means of a glue point _e . with the wall part (9) of the dimensionally stable receiving container $ is connected.