EP0842096B1 - Magazinable strip of clasps for flexible tubes and bags - Google Patents

Description

The invention relates to a magazine strip of closure clips for Hoses and prey, the individual clips of which are each from a clip base and two legs exist and are connected to each other at the ends of the legs are.

Sealing clip strips of the type mentioned generally consist of one originally flat basic profile, which is used for processing with automatic locks formed into a string of contiguous, U-shaped individual clips becomes. To close a bag or tube, it becomes one Braid gathered and placed in a U-shaped clip, which is separated from the strip. Then the locking clip is closed, by moving the two legs of the U-shaped locking clip towards one another be bent. The free ends of the legs meet and are compressed. A description of such a locking process and of state-of-the-art locking clips are in the DE-PS 37 15 626.

A major disadvantage of these known locking clips is that the cross section of the tube or bag gathered in a braid within a relatively narrow range There must be limits so that both secure and tight sealing is guaranteed. If the braid cross-section is too large, the free ones Do not butt ends of the legs, and the bag or tube is not locked securely. On the other hand, if the braid cross-section is too small, the two are Thighs of the locking clip already maximally compressed before the braid completely is compressed so that the tube or bag is not sealed can. In addition, the locking forces are relatively large when closing.

In order to avoid this disadvantage, one has the width of the legs of the locking clips reduced in opposite directions towards the free ends, so that after the closing process the legs are partially next to each other. From the US PS It is known from 2,855,647 that the individual clips thus formed are placed one behind the other a self-adhesive flexible conveyor belt and can be stored in this way close. Another solution is shown in DE-GM 1 960 244; hang there the individual clips in the floor area and must be at an angle be separated from each other in the longitudinal direction of the strip. In the usual automatic sealing machines you can not process one or the other brackets; their manufacture is also considerably more expensive than that described at the beginning Clip strips.

The invention is therefore based on the object of a closure clip strip specify, the individual brackets attached to each other at the ends of the legs, but are suitable for a wide range of different cable cross-sections.

This task is accomplished by a closure clip strip of the type mentioned Kind solved, the closure clips in the area of the clip bottom the widest are and the width of the adjacent legs of two adjacent Closure clips between their clip bottom ends and their together joined ends unilaterally to less than half their greatest width decreases, the decrease in width in the strip direction alternately after the one and the other long side is provided.

The trick, in the stripe sequence the one-sided taper of the thigh width to be provided alternately, so that always differently shaped or arranged Sealing clips in the strip one after the other allows the production of magazineable Strips of closure clips attached to each other at their thigh ends also with such locking clips, as in principle from the US-PS 2,855,647 were known. When processing such a fastener strip the result is that the parting line between those when closing adjacent legs of the same clip in successive Alternately clamp a different angle of inclination to the longitudinal axis of the sleeve braid includes, but this is not a problem.

With the closure clips of the strip according to the invention can be used to braid Ruched bags or hoses of different braid diameters are closed become; the diameter of the sausage braids can vary by 40% differ. In addition, the closing forces in the invention Bracket only half the size of those of the prior art. Another The advantage is that the closure clip strips are very easy to manufacture are; the material saving is approx. 25% compared to conventional closure clip strips.

A variant of the locking clips is that the legs are nearby have a constant width at their free end. In this way it is possible to Area on which the legs of a closed locking clip laterally cover, enlarge, so that the area where the braid cross-sections may vary, becomes even larger.

In the closure clips of the closure clip strip according to the invention However, it can be due to the elasticity of the closure clip material and Forces that the braid material enclosed by the locking clip on the Clasp exerts a spring back of the two legs one Locking clips come as soon as those from the automatic sealing machine onto the locking clip reduce the forces exerted. This spring back can cause unwanted leaks. To reduce such undesirable Leakages can occur in all locking clips, in which the long sides of two Legs side by side after closing the locking clip concern, as is the case with the inventive but also known closure clips the case is provided with locking teeth on the corresponding long sides be the spring back of the legs of the locking clip after it is closed limit. The legs of the locking clips can then only spring back until their teeth clench.

Fig. 1

in Draufsicht eine teilweise Abwicklung einer Verschlußklammerstreifens;

Fig. 2

den Streifenteil der Fig. 1 in der Vorderansicht;

Fig. 3

eine Verschlußklammer des Streifens in der Seitenansicht;

Fig. 4

eine um einen Zopf verschlossene Verschlußklammer in der Vorderansicht;

Fig. 5

die verschlossene Verschlußklammer aus Fig. 4 in der Draufsicht;

Fig. 6

eine Variante der Abwicklung des Verschlußklammerstreifens in Fig. 1.

Fig. 7

eine weitere Variante der Abwicklung eines Verschlußklammerstreifens wie in Fig. 1 mit Rastzähnen; und

Fig. 8

eine verschlossene Verschlußklammer gemäß Fig. 7 in der Draufsicht;

Das Ausgangsmaterial für die Herstellung einer erfindungsgemäßen Verschlußklammer ist ein plastisch verformbares Band konstanter Breite und Dicke. Aus diesem Material werden wechselseitig V-förmige Abschnitte 12 ausgestanzt, so daß sich die in Fig. 1 abgebildete Abwicklung eines Verschlußklammerstreifens aus den aneinanderhängenden Verschlußklammern 10 ergibt. Daß die Abschnitte 12 nicht notwendigerweise V-förmig sein müssen, zeigt Fig. 6. In der Abwicklung (Fig. 1, Fig. 6) ist zu erkennen, daß jede Verschlußklammer 10 im wesentlichen aus einem Klammerboden 14 besteht, an dem seitlich zwei Schenkel 16 und 18 ansetzen, welche sich vom Klammerboden 14 ausgehend zu ihren Enden 20 und 22 hin stetig einseitig und auf verschiedenen Längsseiten der Verschlußklammer 10 auf weniger als die Hälfte ihrer größten Breite verjüngen. Jeder Schenkel 16 und 18 weist mithin in bezug auf die Mittellinie des bandförmigen Ausgangsmaterials eine parallele Längsseite 28 bzw. 30 und eine schräge Längsseite 32 bzw. 34 auf. An den Enden 20 und 22 der Schenkel 16 und 18 befinden sich Verbindungsstege 24 und 26, an denen die Verschlußklammern 10 aneinanderhängen. Embodiments of the closure clip according to the invention will now be explained with reference to the drawing figures. It shows:

Fig. 1

in plan view a partial development of a closure clip strip;

Fig. 2

the strip part of Figure 1 in front view.

Fig. 3

a closure clip of the strip in side view;

Fig. 4

a closure clip closed by a braid in the front view;

Fig. 5

the closed closure clip of Figure 4 in plan view.

Fig. 6

a variant of the development of the closure clip strip in Fig. 1st

Fig. 7

a further variant of the processing of a closure clip strip as in Figure 1 with locking teeth. and

Fig. 8

a closed closure clip according to Figure 7 in plan view.

The starting material for the production of a closure clip according to the invention is a plastically deformable band of constant width and thickness. V-shaped sections 12 are mutually punched out of this material, so that the development of a closure clip strip shown in FIG. 1 results from the mutually attached closure clips 10. Fig. 6 shows that the sections 12 do not necessarily have to be V-shaped. In the development (Fig. 1, Fig. 6) it can be seen that each closure clip 10 essentially consists of a clip base 14 on the side of which two legs 16 and 18 start which, starting from the clamp base 14, taper continuously towards their ends 20 and 22 on one side and on different longitudinal sides of the closure clamp 10 to less than half their greatest width. Each leg 16 and 18 thus has a parallel long side 28 and 30 and an oblique long side 32 and 34 with respect to the center line of the band-shaped starting material. At the ends 20 and 22 of the legs 16 and 18 there are connecting webs 24 and 26, on which the locking clips 10 hang together.

After punching out, the tape becomes U-shaped into locking clips 10 in automatic bending machines bent. In the embodiment shown in Fig. 2, the Clamp base 14 when bending flat, while the legs 16 and 18 protrude. The connecting webs 24 and 26 protrude laterally from the legs 16 and 18 and thus allow all of the interlocking fastener clips (10) of a strip are opened in the same direction (in FIG. 2: upwards).

In Fig. 3 it can be clearly seen that the opposite legs 16 and 18 of the U-shaped locking clips from FIG. 2 alternately from Taper the clamp base 14 towards the leg ends 20 and 22.

When closing the locking clip 10 butt their connecting webs 24 and 26 not blunt to each other, but are guided past each other, so that the 2 is deformed to the profile shown in Fig. 4. The locking clip 10 completely encloses a braid 36. The one shown in Fig. 5 Top view of the closed locking clip in Fig. 4 shows that the legs 16 and 18 with their oblique long sides 32 and 34 abut each other and the Secure the plait 36 even when the bars 16 and 18 from the enclosed braid 36 are pressed apart or after the Spring back slightly due to its elasticity.

The exact shape of the closure clip 10 after closure depends on the included braid diameter: If this is very large, touch the oblique long sides 32 and 34 of the legs 16 and 18 are not; nevertheless cover each other laterally so that the braid is securely closed. It's the other way around the braid diameter is very small, the legs 16 and 18 slide when closing along each other for much of their length; at the same time twists the entire closure clip 10 and in particular the clip base 14. Die sloping longitudinal sides 32 and 34 of the legs 16 and 18 are then after Closing resulting from the twisting of the closure clip 10 Spring forces pressed against each other.

As previously described, they must be used when making a strip of fastener clips mutually punched sections 12 not necessarily Be V-shaped. If the sections 12 '- as shown in Fig. 6 - a have a different shape, the legs 16 'and 18' have a constant end Width and thus allow the diameter of the braid cross-sections in one may vary even larger range. In extreme cases, the cutouts even be rectangular.

In contrast to those in the closure clip according to FIG. 6 1 does not lead to distortion when braids of particularly small diameters should be closed because the mutually parallel end regions of the Legs 16 'and 18' move smoothly past each other anyway when closing can. The legs 16 'and 18' only touch after being closed then laterally when the width of their end regions is just half of the largest Locking clip width is.

The closure clip shown in the development in FIG. 7 is in contrast in addition to the locking teeth 40 shown in FIG. 1, which open the counteract the closed locking clip. The locking teeth 40 are located each close to the ends 20 "and 22" of the legs 16 "and 18" those long sides that lie against each other when the clip is closed, like this is shown in Fig. 8. The locking teeth 40 each have locking surfaces 42 and sliding surfaces 44 on. The locking surfaces 42 run approximately perpendicular to the center line of the Tape material from which the closure clips 10 '' were made. The sliding surfaces 44 have a flatter angle than that with respect to this center line Latching surfaces 42 and together with these form towards the clamp base 14 of the locking clip 10 ″ inclined locking teeth 40.

As when closing the closure clips according to FIGS. 1 to 6, the bevels slide 32 '' / 34 '' of the closure clip according to Fig. 7 when closing each other past. This leads to the fact that the locking teeth 40 of the two legs 16 '' and 18 ″ slide past one another with at least a part of their sliding surfaces 44. After the sliding surfaces 44 of the two legs 16 ″ and 18 ″ are then closed partially to each other. If immediately after closing the force with which the automatic closing machine acts on the closing clip 10 ″, the legs 16 '' and 18 '' of the locking clip 10 '' incline due to their elasticity and the force exerted by braid 36 on closure clip 10 '' to spring back. At least during this spring back movement some of the locking surfaces 42 of the two legs 16 "and 18" as long as one another until they abut each other. As soon as at least some of the latching surfaces 42 meet , the bars 16 '' and 18 '' cannot spring back further, and the locking clip 10 '' cannot open any further. This results in that in FIG. 8 pictured state.

Claims (6)

1. A magazinable strip of sealing clips for bags and tubes, whose individual clips each consist of a clip bottom and two legs and are connected with each other at the ends of the legs,
   characterized in that the sealing clips (10) are widest adjacent the clip bottom (14), and the width of the adjoining legs (16, 18) of two adjacent sealing clips (10) between their ends on the side of the clip bottom and their ends (20, 22) connected with each other unilaterally decreases to less than half their maximum width, where the decrease in width is alternatingly provided towards the one and towards the other longitudinal side in strip direction.
2. The strip of sealing clips as claimed in claim 1, characterized in that over partial lengths the legs (16', 18') have a constant width at their ends (20', 22') connected with each other.
3. The strip of sealing clips as claimed in claim 1, characterized in that the longitudinal sides of the two legs (16'', 18'') of one and the same sealing clip, which rest against each other when the sealing clip (10'', 50) is closed, are provided with locking teeth (40) which restrict a springing back of the legs (16'', 18'') of the sealing clip (10'') when the same has been closed.
4. The strip of sealing clips as claimed in claim 3, characterized in that the legs (16'', 18'') have the locking teeth (40) on partial lenghts of their longitudinal sides resting against each other when the sealing clip (10'') is closed.
5. The strip of sealing clips as claimed in claim 3 or 4, characterized in that the legs (16'', 18'') have the locking teeth (40) on partial lengths subsequent to the ends of the legs (16'', 18'').
6. The strip of sealing clips as claimed in any of claims 3 to 5, characterized in that the locking teeth (40) are inclined towards the clip bottom (14'').

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