EP1309512A1

EP1309512A1 - Device for stopping a bottle against applied torque

Info

Publication number: EP1309512A1
Application number: EP01971782A
Authority: EP
Inventors: Hans HÖSS
Original assignee: Tetra Laval Holdings and Finance SA
Current assignee: Tetra Laval Holdings and Finance SA
Priority date: 2000-08-18
Filing date: 2001-07-25
Publication date: 2003-05-14
Also published as: CA2423525A1; DE10040374B4; WO2002016251A1; DE10040374A1; AU2001291682A1; US6898920B2; US20030173258A1

Abstract

The invention relates to a device for holding a pouring neck of a bottle in the axial direction, said neck comprising a radially projecting ring, and for stopping said neck against torque applied thereto, in one of two rotating directions during rotation about the axis of the pouring neck. Said device comprises a carrier (1) which is open on one side, partially encompasses the pouring neck, and has a U-shaped opening (2) with a curved bottom (3), the central axis thereof being perpendicular to the carrier (1). The device further comprises a projecting engagement element (9) for stopping against rotational movement. The aim of the invention is to improve one such device in such a way that the pouring neck to be stopped can be introduced with greater ease into the carrier and removed - even when a plurality of pouring necks are being simultaneously loaded and unloaded - and to produce a preferably hard-wearing device simply and economically. In order to achieve this, the projecting, stopping engagement element (9) is arranged in a staggered manner in relation to the bottom, in the direction of the central axis in the region of the curved bottom (3) of the carrier (1) on the extended arc (3a) of the bottom (3) in the region of the open side thereof (3). A counter support (3a) is provided on the other side, approximately on the extended arc (3a), opposite the engagement element (9).

Description

DEVICE FOR ARRETING A BOTTLE AGAINST AN APPLIED TORQUE

The invention relates to a device for holding a round body having at least one radial projection in the axial direction and for locking the same against a torque applied to the body in one of two directions of rotation when rotating about the axis of the body, with a one-sided open part of the body encompassing support with a U-shaped opening with an arcuate base, the center axis of which is perpendicular to the support, and with a projecting engaging part for locking against rotational movements.

There are already devices for holding and transporting plastic bottles, in which the bottle neck is made in one piece with the main body from plastic. The bottle or The pouring neck of known containers has a thread on the outside, onto which a corresponding sealing cap can be screwed. A neck ring extends radially from the surface of the pouring neck and is often used to hold the plastic bottle. The neck ring can rest on rails and the bottle can be moved forward by gripping devices, conveyor belts, etc.

After filling such plastic bottles with product, screw caps are usually automatically screwed onto the pouring neck provided with an external thread. If the contents of the bottle are liquid, a torque of such magnitude must be applied during the last screwing on that a liquid seal is created with the screw cap. The pouring neck or the bottle must then be locked against rotation.

For this locking, there is already a device for holding plastic bottles to the main body with the aid of holding jaws, which consist of two angle pieces, which can move relative to one another in such a way that an opening movement occurs and vice versa also a closing movement with corresponding pressure on the surface of the main body can be achieved. In the known device, a large number of movable and controllable holding jaws are to be attached, and not only their construction, but also their control and operation are associated with considerable effort and wear.

Another known locking device similar to the device described above for holding and locking pouring necks on plastic bottles also has a U-shaped one Opening with an arched base, but there are 90 ° apart

Tips, spikes or pins are arranged on the carrier surface so that they protrude perpendicularly from the surface of the carrier in the direction of the central axis. The neck ring of a bottle pouring neck can be pressed onto this spike-like spike from above, so that they dig into the neck ring from below and lock the neck ring against torques. However, this can only be achieved with great axial pressure, because otherwise the neck ring will turn over the pointed projections, even if there are scratch marks. It has also been found that attaching such spikes or pens is difficult during the manufacturing process. Furthermore, these pins wear heavily during operation. The manufacturing effort increases if you make these pins or spikes from hard metal. But even then there is a lot of wear.

However, it is particularly difficult to insert and even more difficult to remove bottles with screw caps, because the neck ring of the respective pouring neck only has to be loosened in the transverse direction from the tips of the spikes, so to speak. The holding edges of the pins have been pressed into the neck ring, so that the bottle would have to be lifted in the axial direction. Under these conditions, removing a plastic bottle with a screw cap that is automatically screwed on is difficult and cumbersome to ensure.

The invention is therefore based on the object to improve a device of the type mentioned for holding and locking round bodies so that the body to be locked can be more easily inserted and removed from the carrier, even if a plurality of bodies at the same time is loaded and unloaded, the device being easy to manufacture without great effort and preferably less wear and tear.

This problem is solved according to the invention in that the projecting, retaining engaging part in the direction of the central axis at the level of the arcuate base of the carrier on the elongated arc of the base is offset to this in the region of the open side of the base and on the other side a counter support is provided on the elongated arch opposite the engaging part.

The holding of a round body in the direction of its axis is achieved relatively simply in that the round body has a radial projection. For example, in the case of the plastic bottle, its pouring neck has a neck ring. Locking against movement in the direction of rotation (when rotating the body about its axis) is more difficult. According to the invention, the locking is particularly thorough because it only targets one of two directions of rotation. The "cylindrical body", which is generally cylindrical on its outer surface, can be inserted into the carrier, which is open on one side, rotating in one direction and is locked under hooking or clawing against further rotation in this direction when the round body has the arcuate base In the opposite direction of rotation, however, the locking effect can be released simply by rotating in the opposite direction and then the round body can be unscrewed, provided there is only a small transverse sliding movement.

In this way you can lock plastic pipes and cut threads in their outer surfaces. Coils can also be inserted into the device according to the invention and locked there, it being possible, in particular, to produce coils by locking the winding core (for example for electrical coils) and winding up wires. This results in a wide variety of possible uses for the device according to the invention with the features described.

It is common to all devices that the projecting, locking engaging part does not project in the direction of the central axis of the arch, that is to say perpendicular to the at least partially plane support, as in the known device; but radially towards the central area of the arch. The function of such a radially projecting engaging part then presupposes that the engaging part is located essentially in the area of the carrier and does not protrude far from it either vertically upwards or downwards. If one looks at the arch of this arched base of the carrier, then this arch has a central axis that is perpendicular to the carrier. In the area of the beam, this central axis intersects the beam plane. According to the invention, the locking engagement part is located at the height of this cutting area. It is therefore arranged at the level of the carrier and thus does not protrude far either to one side or to the other side of the carrier.

In this way, the locking engaging part can engage in a suitable peripheral region of the round body from the outside and lock the round body against rotation.

The locking engagement part engages particularly effectively in the round outer wall of the body in order to lock it when the engagement part is arranged on the elongated arch but somewhat offset from the arch.

As is well known, an “arc” is a section of a curved line, a curve; especially a circle. For reasons of production technology, the base of the carrier considered here will preferably be a circular arc. The arc is the base of the U- shaped opening, so that at the bottom of the edge of the carrier follows only a partial circle. Extending the special circular arc results in an imaginary circle, in the area of which the locking engagement part is to be thought of as arranged.

This imaginary supplementary piece of the circular arc, that is to say the so-called extended arc here, is located in the region of the open side of the base, preferably opposite the base. However, the locking engagement part is preferably arranged in the transition region between the U legs and the base of the U.

Correspondingly, a counter support is arranged on the opposite side and also in the area of the extended arch opposite the engaging part. The just inserted round body is supported on it and can also be moved, pushed and rotated relative to it, while the surface of the round body hooks and locks on the other side with the locking engaging part.

The body to be locked can be moved more easily into the carrier by the measures according to the invention and can be easily removed from the carrier again by the interaction between the clawing engaging part on the one hand and the counter support on the other. This is also possible when a plurality of bodies are moved at the same time. The device for holding and locking the round body can also be produced in large numbers using simple technical means.

It is particularly expedient if, according to the invention, the counter support is provided with an outlet bevel that supports the round body and is resiliently biased in the direction approximately towards the center point of the semicircular arch located in the center axis. One can imagine a fixed counter support if the holder of the engaging part is preferably resilient. However, it can be particularly simple to construct the counter support resiliently biased and to favor the relative movements of the surface of the round body with the counter support by means of a run-out slope. The counter support is then preferably biased against the central area of the arch.

According to the understanding of the invention, the closed side of the U-shaped opening of the carrier is formed by the arch, which is preferably an arc with a center through which the central axis is placed perpendicular to the plane of the carrier.

Alternatively or additionally, the locking engagement part can also be provided with a protruding edge and directed in the direction approximately towards the center point of the partially preload the circular arc. Either only the counter support or only the locking engaging part can be resiliently biased, or both, ie the engaging part and also the counter support, can be resiliently biased.

The locking engaging part expediently has a protruding edge as the effective point. It is particularly advantageous if the locking engagement part is a cutting insert fastened in a holder. Cutting inserts are inexpensive to buy in large quantities. If one reliably fastens such in a holder so that the edge of the cutting insert, the cutting edge, so to speak, protrudes radially onto the center of the arcuate base of the carrier, the acting edge can be produced effectively and inexpensively as an engaging part.

A further preferred embodiment according to the invention is characterized in that the counter support and / or the holder for the locking engaging part has a spring arm which forms the side leg edge of the U-shaped opening of the carrier and is fastened to the carrier at the open end of the U-shaped opening , and that the carrier has undercuts behind the spring arm. Such an embodiment can be produced easily, for example by means of a flat plate, for example from stainless steel. In addition to the U-shaped opening in the plate-shaped support, undercuts can then immediately be created in such a way that the spring arms for the counter support and holder are formed. Alternatively, you can also design only one spring arm for the counter support or for the holder. The spring arm forms a resiliently elastic part, which from the front, i.e. can be bent away from the side leg edge backwards into the undercut, with the result that the spring arm then moves back elastically back to its original position. The respective spring arm is thus integrally formed on the outside of the U-shaped opening on the carrier; can also be attached separately in another embodiment. The undercuts create spaces into which the spring arm can be moved. On the spring arm, which expediently extends over most of the side leg of the U, the holder with the attached locking engagement part is located on the inner side of the U-shaped opening. Accordingly, on the side with the counter support there is preferably an area thickened with respect to the thin spring with the mentioned run-out slope.

In an advantageous further embodiment of the invention, the arcuate base of the carrier is formed by an approximately semicircular arch plate fastened to the carrier, the thickness of which in the direction of the central axis is greater than that of the carrier, and the free ends of the arch plate have recesses to support the spring arms attacks on. If the carrier consists of an essentially flat steel plate, the arcuate base can be formed by a corresponding arcuate edge of the carrier. The described here Another embodiment uses a special arch plate with a greater thickness than the thickness of the support itself for the formation of the arch-shaped base. This arch plate is fixedly attached in a corresponding recess in the closed region of the U-shaped opening. If the arch plate is also made of steel, it can be attached to the support by welding, for example.

The purpose of the greater thickness of the arch plate compared to the carrier is that the stops located on the inwardly extending free ends of the spring arms are supported in the above-mentioned recesses on slide bearings. This support acts in the direction of the center axis described and counteracts a compressive force in the direction of the center axis during operation. This advantageously prevents the spring arms from bending. The recesses can be regarded as cutouts which specify a plane which is parallel to that of the carrier and on which the stops on the spring arms can slide. They slide when the spring arm is bent against its spring force or moves back again. The movement of the spring arm takes place approximately in the direction of the plane of the carrier. A disadvantageous bending of the spring arm in the direction perpendicular to it is avoided by the recesses.

It is furthermore particularly expedient according to the invention if the surfaces of the carrier lie flush in one plane with the surfaces of the spring arms, the holder with the stops and the arch plate. The thicker arch plate described above (thicker than the carrier) can be used to create a recess to form a sliding bearing, the sliding plane of which comes into contact with the underside of the stops on the spring arms, with sufficient material then still being present below the spring arms and thus the carrier is. If, according to the features mentioned last, the surfaces of the carrier and the arch plate are designed to lie flush in one plane, the arch plate protrudes downward from the lower surface of the carrier. All parts can then advantageously be cleaned particularly well on the surface arranged above, for example sprayed with liquid cleaning agents and optionally also wiped off. This flush arrangement of the surfaces in one plane also favors the insertion and removal of the body to be locked, because its holding parts then do not come into contact with anything.

These considerations play a special role when, in a further embodiment of the invention, the round body to be locked is the plastic pouring neck of a package and the inside diameter of the curved plate is approximately equal to the outside diameter of the pouring neck. The pouring neck has the neck ring as a radial projection. The cylindrical jacket-shaped part of the pouring neck remaining between the neck ring and the main body of the packaging, for example a plastic bottle, has an outer diameter which is approximately the same and preferably somewhat smaller than the inner diameter of the arc plate. In this way, the pouring neck can be inserted into the U-shaped opening of the carrier, and the whole package, hanging over the pouring neck, can hang down from the carrier. The axial holding of the packaging and its pouring neck, which is attached in the middle at the top and represents the “round body”, takes place via the radial projection, ie over the neck ring. The protruding edge of the cutting insert then engages in the cylindrical jacket-shaped intermediate part between the neck ring and the main body of the packaging and clearly ensures an effective locking against at least one of two directions of rotation.

Using the described mounting and locking device according to the invention, a large number of packs with pouring necks and external threads can be screwed on at the same time with a corresponding number of screw caps with considerable torque so that there is then a liquid seal. Nevertheless, after unscrewing the caps, the packs can be turned out of the U-shaped opening of the respective carrier in the opposite direction with little effort. With this removal movement, either the spring arm with the engaging part can be pushed out of the movement path elastically, or, in the event that the engaging part is rigidly attached to the carrier, the oppositely arranged counter support is pressed out of the movement path on a resilient part, preferably on a spring arm become; or both parts are spring-loaded.

The device according to the invention ensures a very good and extensive enclosure of the respective round body. The outer surface of the round body, which is in the form of a cylindrical cylinder, can be inserted exactly into the base of the U-shaped opening in the carrier, and can optionally be partially inserted with a slight rotation. The holder of the round body is particularly favorable when processing plastic bottles because the processing position is then precisely maintained.

If the carrier in a packaging processing machine is a very large sheet with numerous U-shaped recesses, a hygiene space can be delimited by the carrier, so that the respective pouring neck is located in the hygiene space and can accordingly be made and kept germ-free. Even after leaving the processed products, such a machine can be cleaned particularly deeply and effectively, particularly in the area of the hygiene room. As is well known, smooth surfaces can be sprayed off better, and germs can be avoided or reduced there due to a lack of dead spaces. For each outer diameter of a corresponding round body, a special arc must be used as the base of the U-shaped opening. In the case of plastic bottles, however, the pouring necks are standardized or subject to an industry standard, so that a large number of products can generally be processed with one and the same tool.

Further advantages, features and possible applications of the present invention result from the following description of preferred embodiments in conjunction with the attached drawings. In these show:

Figure 1 is a plan view of a first embodiment with a support in the form of a flat steel plate, which has a U-shaped opening at the bottom with an arcuate base arranged at the top, both side leg edges being formed by spring arms and both the engaging part and the counter support on a spring arm Figure 2 is broken off a partial sectional view along the line II-II of Figure 1, Figure 3 is a view of the plate-shaped carrier of Figure 1 from below against the direction of view of Figure 1, Figure 4 shows the embodiment of Figure 1 with the pouring neck of a plastic bottle 5 shows a partially broken cross-sectional view along the line VV in FIG. 4, FIG. 6 shows a view similar to FIG. 4, but in which the round body in the form of the pouring neck of the plastic bottle just leaves the base of the U-shaped opening in the carrier, FIG. 7 another embodiment of the device with rigid a 8, a further different embodiment with a rigidly attached engagement part and a spring-loaded slide with counter support, the removal torque of which is adjustable, and FIG. 9 a cross-sectional view along the line IX-IX of FIG. 8.

Figure 1 shows the top view of a carrier 1 in the form of a flat plate made of stainless steel with a thickness of 3 mm. From the lower edge shown here in the figures, a U-shaped opening 2 extends into the carrier, which is closed on its rear or inner side by an arcuate base 3. This specifies a sheet labeled 3a here.

In the embodiments shown here, the arcuate base 3 of the carrier is formed by an almost semicircular arc plate 4, which is welded to the carrier 1 along the locations shown as weld beads 5. Through the center M, which is the center of the circle It is on which the sheet 3a lies, one can place a central axis 6 perpendicular to the paper plane and thus perpendicular to the carrier 1, which can be seen in the illustration in FIG.

Seen in the direction of this central axis 6, the arch plate 4 is also at the same height as the support 1 in the region of the open side of the base 3, through which the dashed diameter line 7 of the arch 3a also runs (perpendicular to the longitudinal axis 8 of the support 1). , At this common height there is a projecting locking engaging part 9 in the form of a cutting insert with its protruding edge 10 (cutting edge). If the sheet 3a were extended in a manner not shown here, then one would meet the projecting edge 10 of the engaging part 9 in the region of the open side of the base 3 on the one side of the U-shaped opening 2 considered here.

If one were to follow this imaginary arc in a clockwise direction when looking at FIGS. 1, 7 and 8, then after crossing the longitudinal axis 8 of the carrier 1 one came to the “other side” of the U-shaped opening 2 and would meet the engaging part 9 in mirror image on the run-out slope 11 of a counter support 12. This point is regarded as "offset" to the arch 3a, because the bow 3a must first be lengthened somewhat in order to reach this run-out slope 11 of the counter support 12.

On the side opposite the counter support 12 with respect to the longitudinal axis 8 of the carrier 1 is the engaging part 9 in the form of the cutting insert, which is caulked in a holder 13 at the fastening points 14.

In the embodiment according to FIGS. 1 to 6, both the counter support 12 and the holder 13 are fastened to the carrier via a straight spring arm 15 at the open end of the U-shaped opening 2. The respective spring arm is cut in one piece from the material of the carrier 1. In the embodiment of FIG. 7, only the counter support 12 is fastened to the carrier 1 via a spring arm 15 which is integrally connected to the counter support 12. In the embodiment in FIG. 8, the run-out slope 11 of the counter support 12 is resiliently prestressed by means of a structure as a slide (counter support 12) with a compression spring 16.

Both embodiments, both the spring arm 15 and the counter support 12 designed as a slide, ensure a resilient prestressing of the counter support 12 or the holder 13 with the engagement part 9 approximately in the direction of the center M of the part-circular arc 3a.

In the embodiment with the spring arms 15, these run parallel to the U-legs of the U-shaped opening 2. The respective spring arm 15 practically forms the side leg edge 17 of the U-shaped opening 2 of the carrier 1. From the longitudinal axis 8 of the carrier 1 via this respective

When viewed from the side leg edge 17 to the side, undercuts 18 can be seen in the carrier 1. These allow the production of the thin, elastically resilient spring arm 15 and also enable a resilient tilting into the undercut 18 around the respective lower fastening point.

In the embodiment of FIG. 8, a slide can be moved back and forth in a straight line along the dashed transverse line Q, in order to thereby increase or decrease the distance between the protruding edge 10 of the cutting insert and the run-out slope 11 of the counter support. From the outside (from the left in Figure 8), the slide of the counter support 12 is designed as a slot nut and receives the compression spring 16, the pressure of which is adjusted by the adjusting screw 19, i.e. can be enlarged or reduced. The turning torque of the round body to be described can thus be adjusted out of the U-shaped opening 2 of the carrier 1 and into it.

FIG. 9 shows a view along the line IX-IX of FIG. 8, the counter support 12 here being clearly provided with a slot nut which engages around the spring 16.

The embodiments according to FIGS. 7 and 8 do not need to be particularly explained with regard to the engaging part 9. There, the holder 13 is not attached to a spring arm, but rather directly rigidly to the support 1 or is formed integrally therewith.

In all embodiments with the spring arm 15, so-called stops 20 are located on its inner, free end. These are configured parallel to the longitudinal axis 8 of the carrier 1 and are extended toward the rear and thus extend into the physical area of the arch plate 4.

The arc plate 4 has a thickness D which is greater than that of the holder 13 or also the counter support 12 on the spring arm 15 of the carrier 1 (FIG. 2). This makes it possible to cut out a recess 21 at the free ends of the arc plate 4, which then forms a slide bearing for the respective stop 20. Forces acting in the direction of the center axis 6 in FIGS. 1 and 4 to 8 in the direction of view of the paper plane (for example when screwing on a threaded cap) are then held by the surface 22 of the recess 21 that has remained, so that the spring arms 15 with their stops 20 are practically held and supported against bending.

FIG. 5 has broken off and shows in cross section a packaging 23 in the form of a PET bottle with the main body 24 and the pouring neck 26 provided with an external thread 25. The pouring neck 26 represents a round body which is held by the device described here. tert and can be locked. The round body / pouring neck 26 has a neck ring 27 as a radial projection. 5, the pouring neck / round body 26 can be pushed in the direction of arrow 28 into the U-shaped opening 2 so that the end position shown in FIG. 5 is reached, in which the arc plate 4 between the main body 24 and the neck ring / radial projection 27 comes to rest. As a result, the entire packaging 23 is held in movements in the direction of the central axis 6 (to the right or left in FIG. 5).

This state of the packaging 23 which has been retracted into the arcuate base 3 of the carrier 1 can be seen in plan view, in which the viewing direction runs in the direction of the central axis 6, in FIG. 4. The hatched hatch represents the pouring neck / round body 26. In the base 3 the pouring neck 26 rests on the edge or bow 3a of the arch plate 4, and the pouring neck 26 is supported on each end of the arch plate 4: in FIG. 4 on the left side on the counter support 12 via the outlet slope 11 and opposite on the right against the above Edge 10 of the engaging part 9 designed as a cutting insert. Rotation of the pouring neck 26 clockwise in accordance with the curved arrow 29 in FIG. 4 is not possible because the sharp edge 10 of the engaging part 9 claws into the cylindrical outer surface of the pouring neck 26. It rotates to loosen the packaging 23 and thus the pouring neck 6 in the top view of FIGS. 4 and 6 in the counterclockwise direction sense, that is, counter to the curved arrow 29, so that after a brief rotation the state of FIG. 6 is reached. The pouring neck 26 has just left the bottom 3. You can see the crescent-shaped free space. The rotation takes place via the protruding edge 10 of the engaging part 9, while the diametrically opposite one of the pouring neck 26 slides on the outside over the outlet slope 10, the spring arm 15 being resiliently pressed to the left into its undercut 18. There is now enough space between the projecting edge 10 and the outlet slope 11 that the entire pouring neck 26 can be moved out of the U-shaped opening 2 and thus out of the carrier 1.

LIST OF REFERENCE NUMERALS

1 carrier

2 U-shaped opening

3 arched base

3a sheet

4 arch plate

5 welding bead

6 center axis

7 diameter line

8 longitudinal axis of the beam

9 locking engagement part

10 protruding edge (cutting edge)

11 discharge slope

12 counter support

13 holder for locking engagement part

14 attachment point

15 spring arm

16 spring

17 side leg edge

18 undercut

19 adjusting screw

20 stop

21 recess

22 remaining area

23 packaging

24 main body

25 external threads

26 pouring neck, round body

27 neck ring, radial projection

28 arrow, direction of insertion

29 arrow, direction of rotation

M center of arc 3a

Q cross line

Claims

Patent claims

1. Device for holding a round body (26) having at least one radial projection (27) in the axial direction (6) and for locking it against a torque applied to the body (26) in one of two directions of rotation (29) when rotating the axis (6) of the body (26), with a support (1) which is open on one side and partially encompasses the body (26) and has a U-shaped opening (2) with an arcuate base (3), the central axis (6) of which is perpendicular to the Carrier (1) stands, and with a projecting engaging part (9) for locking against rotational movements (29), characterized in that the projecting, locking engaging part (9) in the direction of the central axis (6) at the level of the arcuate base (3rd ) of the carrier (1) on the extended arch (3a) of the base (3) is arranged offset to this in the region of the open side of the base (3) and on the other side approximately on the extended arch (3a) opposite the engaging part ( 9) a e counter support (12) is provided.

2. Device according to claim 1, characterized in that the counter support (12) with a round body (26) supporting outlet slope (11) and in the direction approximately to the center axis (6) lying center (M) of the part-circular arc (3a) is resiliently biased.

3. Apparatus according to claim 1 or 2, characterized in that the locking engaging part (9) has a projecting edge (10) and resilient in the direction approximately to the center axis (6) lying center (M) of the part-circular arc (3a) is biased.

4. Device according to one of claims 1 to 3, characterized in that the locking engagement part (9) is a cutting insert fastened in a holder (13).

5. Device according to one of claims 1 to 4, characterized in that the counter support (12) and / or the holder (13) for the locking engaging part (9) has a spring arm (15) which the side leg edge (17) of the U -shaped opening (2) of the carrier (1) and is attached to the open end of the U-shaped opening (2) on the carrier (1), and that the carrier (1) has undercuts (18) behind the spring arm (15) ,

6. Device according to one of claims 1 to 5, characterized in that the arcuate base (3) of the carrier (1) by an approximately semicircular, on the carrier (1) BEFE- Stigt arc plate (4) is formed, the thickness (D) in the direction of the central axis (6) is greater than that of the carrier (1), and that the free ends of the arc plate (4) recesses (21) to support on the spring arms (15) located stops (20).

7. Device according to one of claims 1 to 6, characterized in that the surfaces of the carrier (1) in a plane flush with the surfaces of the spring arms (15), the holder (13) with the stops (20) and the arc plate ( 4) lie.

8. Device according to one of claims 1 to 7, characterized in that the round body (26) to be locked is the plastic pouring neck (26) on a package (23) and the inner diameter of the arc plate (4) is approximately equal to the outer diameter the pouring neck (16).