DE202019005273U1 - Tension ring - Google Patents

Abstract

Clamping ring (10) with a widened U-shaped or trapezoidal cross-sectional profile, in which a flat or rounded middle piece (12) - viewed in the intended horizontal locking position - connects an upper clamping ring arm (14) and a lower clamping ring arm (16), the upper one Clamping ring arm (14) is formed slightly upward and / or the lower clamping ring arm (16) is inclined slightly downward from the horizontal, and a collar-shaped flange edge (18) which is angled downwards in the vertical direction is connected to the lower clamping ring arm (16), characterized in that that the clamping ring (10) is designed to be stackable for stacking similar clamping rings (10 '), with the upper clamping ring leg (14) on its upper side being a centering device (20) for the flange edge (18) of a similar clamping ring (10 ') which, as a stop to prevent lateral verse Pushing the stacked clamping ring (10 ') is formed.

Description

The invention relates to a clamping ring with a widened U-shaped or trapezoidal cross-sectional profile, in which a flat or rounded middle piece connects an upper clamping ring arm and a lower clamping ring arm, the upper clamping ring arm slightly upwards and / or the lower clamping ring arm slightly downwards from the Is formed horizontally inclined, and a collar-shaped flange edge angled downward in the vertical direction adjoins the lower clamping ring leg.

Clamping rings with a corresponding clamping ring locking device are used for the detachable fastening of a drum lid to a lid drum and are known in the known state of the art in a wide variety of embodiments. B. from the publications DE 20 2013 000 452 U1 (Br) or DE 43 21 550 A1 (Mr).

Problem:

The present invention is directed to a particular problem. Clamping rings with a symmetrical cross-sectional profile cannot be stacked on top of one another, and even clamping rings with an asymmetrical cross-sectional profile cannot be stacked in defined vertical stacks due to the oblique clamping ring limbs, since - especially with transporter vibrations - an uncontrollable lateral sliding of the clamping rings occurs and stable and secure stacks of similar clamping rings cannot be assembled.

It is an object of the present invention to improve the storage, transport and handling of clamping rings during manufacture and during the intended use.

This object is achieved according to the invention in that the clamping ring is designed to be stackable for stacking similar clamping rings, the upper clamping ring leg on its upper side having a centering device for the downwardly angled flange edge of a stacked clamping ring, which acts as a stop to prevent lateral displacement of the stacked clamping ring is trained.

The design of the special centering device on the top of the upper clamping ring leg for the flange edge of the stacked identical clamping ring that is angled downwards creates a stackable clamping ring, in which a secure meter-high stacking in vertical alignment with a defined horizontal support on one another is guaranteed and minimal lateral slippage is prevented . If a stacked clamping ring on the lower clamping ring can slip a little by a few mm to the side, this results in the height of z. B. 2 m high stack such an offset from the vertical that such a stack becomes unstable and would certainly overturn.

The defined horizontal mounting of clamping rings in exact vertical stacks in a precisely aligned arrangement in corresponding magazine devices enables a better use of fully automatic processing machines in the various manufacturing steps in mass production as standard, e.g. B. when welding clamping ring locking devices with two pivot bearing bases on the two ends of a clamping ring blank, as well as in the handling of clamping rings such. B. in the automatic placement of drum lids and clamping rings and subsequent closure of lid drums in automatic filling systems.

In a constructive embodiment of the invention, it is provided that the centering device is designed as a circumferential gradation oriented upwards in the vertical direction shortly before the end of the upper clamping ring leg.
The upward-facing step has a slightly smaller outside diameter at its diameter-largest peripheral outer edge than the inside diameter of the flange edge at the lower clamping ring leg of the stacked clamping ring, the difference between the outside diameter of the step and the inside diameter of the flange edge being approximately 1 mm to 4 mm, preferably 2 mm , is. This ensures that each stacked clamping ring is precisely centered and virtually prevents it from slipping sideways.

In a further embodiment of the invention, it is provided that the upper clamping ring leg is inclined or spread upwards with a small opening angle of 10 ° to 20 °, preferably 15 °, and has a short horizontally extending leg piece directly before the upward gradation. The short horizontally extending leg piece, viewed in the radial direction, has a length of approximately 2 mm to 5 mm, preferably 3 mm, and represents the bearing surface for the flange edge of the stacked clamping ring. This advantageous embodiment of the upper clamping ring leg with the short horizontally extending leg piece Even with a slight lateral displacement between two stacked clamping rings, it is ensured that a horizontal contact surface is still available and no lateral tilting from the vertical direction is possible.
For the formation of a sufficient stop edge for the flange edge of a stacked one It is important that the short horizontal leg piece with the upward gradation ( 22 ) of the upper clamping ring leg forms an angle between 45 ° and 90 °, preferably 60 °.
Due to their stackability to form stable, high and stable stacks in lattice boxes or on corresponding pallets, the clamping rings designed according to the invention represent a significant improvement in the handling of such clamping rings during manufacture or manufacture, during transport and storage, and when used as intended with barrel lids and lid drums.

• 1 einen erfindungsgemäßen Spannring mit halb geöffnetem Spannring-Verschluss in Draufsicht,
• 2 einen bekannten Spannring für eine Stahl-Deckelfass mit aufgesetztem Fassdeckel in Querschnitts-Teilansicht,
• 3 ein erfindungsgemäßes Spannringprofil in Querschnittsansicht,
• 4 einen Ausschnitt auf eine bisher übliche schräge Aufeinanderlegung von bekannten Spannringen,
• 5 eine Aufstapelung von drei erfindungsgemäßen Spannringen in Teil-Querschnittsansicht und
• 6 eine versetzte Anordnung von drei erfindungsgemäßen Spannringstapeln auf einer verkürzten Flachpalette in Draufansicht

The invention is explained and described in more detail below on the basis of exemplary embodiments schematically illustrated in the drawings. Show it :

• 1 a clamping ring according to the invention with a half-opened clamping ring closure in plan view,
• 2nd a known clamping ring for a steel lid barrel with attached barrel lid in partial cross-sectional view,
• 3rd an inventive clamping ring profile in cross-sectional view,
• 4th a section of an oblique superposition of known clamping rings,
• 5 a stack of three clamping rings according to the invention in partial cross-sectional view and
• 6 a staggered arrangement of three clamping ring stacks according to the invention on a shortened flat pallet in plan view

In 1 is with the reference number 10th a clamping ring with a clamping ring locking device 12th designated. The clamping ring locking device 12th has a slightly open cocking lever 14 and bridges the two ends of the tension ring 10th , being on one end of the clamping ring 10th a swivel bearing base of the clamping lever on the clamping ring side 14 and on the other end of the tension ring 10th a tension ring-side swivel bearing base of a pull bracket 16 is firmly welded on.
Tension rings are used, among other things, to close lid drums. The barrel lids are usually made of plastic or metal, the lid barrel bodies can also be made of plastic, metal or fiber (cardboard drums). The clamping rings usually consist of galvanized sheet steel profiles in diameter sizes from 80 mm to 2000 mm with material thicknesses between 0.5 mm and 2.5 mm. For special applications, the clamping rings can also be made of plastic with slightly thicker material thicknesses. In cross-sectional view, the clamping rings have a widened U-shaped or trapezoidal profile with or without a collar. In normal use, the normal position of the clamping ring is a horizontal positioning placed on a cover barrel with the flange edge pointing downwards, the clamping levers being designed for right-handers and being folded and closed clockwise.
A well-known tension ring 18th for a steel lid barrel 20th with attached drum lid 22 is in 2nd seen in partial cross-section. In order to get an idea of the given proportions, the barrel lid is countersunk 22 specified from the upper edge of the barrel lid to the deep-drawn lid surface with 19.5 mm. The well-known clamping ring 18th has a widened U-shaped cross-sectional profile, in which a flat middle piece 24 ' an upper clamping ring leg 26 ' and a lower clamping ring leg 28 ' connects, with the upper clamping ring leg 26 ' is inclined slightly upwards from the horizontal. On the lower clamping ring leg 28 ' a collar-shaped flange edge is angled downwards in the vertical direction 30 ' on.

A corresponding cross-sectional profile also has in 3rd illustrated clamping ring according to the invention 10th with a flat center piece 24th , upper clamping ring leg 26 and lower clamping ring leg 28 on, here the upper clamping ring leg 26 as well as the lower clamping ring leg 28 are slightly inclined upwards or downwards from the horizontal. The tension ring is a special feature 10th for stacking similar clamping rings 10 ' designed to be stackable. This is the upper clamping ring leg 26 on its top with a centering device 32 for the flange edge that is angled downwards 30th a similar clamping ring stacked from above 10 ' Mistake. In the present case, the centering device 32 as a circumferential gradation oriented vertically upwards 34 of the upper clamping ring leg 26 educated. Instead of the circumferential gradation 34 could be the centering device 32 but can also be formed by a plurality of knobs or ribs which are laterally spaced apart and which are pronounced upward from the upper clamping ring leg.

In other words, the end of the upper clamping ring leg facing the center of the clamping ring or inwards 26 first angled upwards in the vertical direction and then immediately again in the horizontal direction and thus S-shaped. The piece pointing vertically upwards or the gradation 34 of the upper clamping ring leg 26 is therefore a stop to prevent lateral displacement of the stacked clamping ring 10 ' designed.
Since the design details are only in the small mm range, even small dimensional changes are of great importance. Against this background, it is essential to the invention that the upward gradation 34 a slightly smaller outer diameter than the inner diameter of the flange edge at its largest outer edge 30th on the lower clamping ring leg 28 of the stacked tension ring 10 ' has, the difference between the outer diameter of the gradation 34 and inner diameter of the flange edge 30th is about 1 mm to 4 mm, preferably 2 mm. This ensures with tight manufacturing tolerances that between stacked clamping rings 10th , 10 ' no lateral displacement or slipping can take place, as is the case with known clamping rings.
The upper clamping ring leg is used to ensure secure stacking without slipping sideways and to prevent a high stack from tipping sideways 26 with a small opening angle of 10 ° to 20 °, preferably 15 °, inclined or spread out and points directly in front of the upward gradation 34 a short horizontal leg piece 36 on, which is viewed in the radial direction in a length of about 2 mm to 5 mm, preferably 3 mm. The short horizontal leg piece closes 36 with the upward gradation 34 an angle between 45 ° and 90 °, preferably 60 °.

The upward gradation 34 is at its upper free end with a short horizontally oriented bend 38 equipped so that there is no sharp-edged upper edge of the clamping ring and to provide a flat support with its horizontal smooth top for stacking other empty or filled lid drums. In a constructive embodiment, the short, horizontally oriented bend has 38 from the top to the top of the short horizontal leg piece 36 a height of 2 mm to 5 mm, preferably 3 mm.

In order to first find a good approach of the clamping ring legs to the rim of the barrel lid and the lid barrel rim when closing a lid barrel with a barrel lid and inserted lid seal by means of a tension ring and then to achieve an optimal contact pressure for the lid seal, it is provided that the lower tension ring leg 28 with a small opening angle of 10 ° to 20 °, preferably 15 °, is inclined or spread out and directly in front of the flange edge which is angled downwards 30th a short piece of the clamping ring leg 28 has a slightly larger opening angle of 20 ° to 30 °, preferably 25 °.

In 4th is an example of a previously common laterally offset stacking of known clamping rings. Here, the clamping rings in the 2-pack are always placed alternately, sometimes to the right, sometimes to the left, with the clamping ring closure always lying at the bottom. The clamping rings are stored e.g. B. at a clamping ring manufacturer by hand on a pallet or in a wire basket. Likewise, the clamping rings are picked up from the pallet or removed from the mesh basket at your next location, e.g. B. by hand with a lid barrel manufacturer.

In contrast shows 5 in cross-sectional view a partial section from a vertical stack of three clamping rings according to the invention, which are aligned absolutely horizontally and without slipping on each other. For a 220 I steel lid barrel, the clamping rings have an outer diameter of 571 mm in the closed state and an outer diameter of 634 mm in the fully opened state, the width or height (in the vertical direction) is 32 mm and the material thickness is 2 mm. The tension rings 10th are stacked so that the flange edge 30th of the lower clamping ring leg 28 on the horizontal leg piece 36 of the upper clamping ring leg 26 of the lowest tension ring 10th lies on. The upward gradation 34 on the upper clamping ring leg of the lowest clamping ring 10th “Dips” about 3 mm deep into the stacked clamping ring 10 ' and fixes and blocks its flange edge from the inside or circumference 30th against slipping or shifting sideways.

Clamping rings according to the invention are, for. B. vertically precisely aligned in three stacks on a special pallet 40 piled up and wrapped with stretch film. At the in 6 represented range 40 With dimensions of 800 x 1900 mm, the three stacks are slightly offset from each other. Since the clamping rings according to the invention are also equipped with a very advantageous special feature, namely a locking device for fully opened clamping ring closures (clamping lever opened 180 °), they are on the pallet 40 stacked and stored in the fully opened state with an outer diameter of 634 mm.

If one assumes a loading space size of a truck trailer with dimensions of 2480 x 13600 mm and a loading space height of 2700 mm, the in 6 Outlined palette (800 x 1900) seven pallets in length and three pallets next to each other, so a total of 21 pallets are invited. If 85 clamping rings are stacked in a stack, this results in a total number of 5355 pieces per load, ie approx. 6% more than with previous, randomly stacked clamping rings.

Until now, it was also common for a clamping ring manufacturer to close the finished clamping rings by hand and to laterally offset them by hand and store them diagonally on pallets or in wire baskets. These mesh baskets were delivered to a lid barrel manufacturer, where the clamping rings were removed from the mesh basket by hand, opened by hand, spread wide on the finished empty lid barrel and then immediately closed by hand. These lid drums were then attached to the respective bottlers, e.g. B. large chemical companies. The clamping ring was then opened by hand at the filling systems, spread wide and removed together with the barrel lid from the lid barrel, so that the barrel could be filled. The barrel lid and the widely spread clamping ring were then placed back on the filled barrel by hand and closed.

• Der Spannring-Hersteller liefert seine Spannringe mit weit geöffnetem Spannring-Verschluss direkt an einen Deckelfass-Hersteller oder Abfüller. Dort können die weit aufgespreizten Spannringe mittels automatischer Spannring-Greifvorrichtungen aus den Magazin-Paletten entnommen und vollautomatisch auf die fertig abgefüllten Deckelfässer aufgesetzt und verschlossen werden. Durch diese technische Handhabungsmaßnahme wird viel manuelle Handarbeit eingespart.

Simplified, environmentally friendly handling is provided for the clamping rings according to the invention:

• The clamping ring manufacturer delivers its clamping rings with the clamping ring closure wide open directly to a lid barrel manufacturer or bottler. There, the widely spread clamping rings can be removed from the magazine pallets using automatic clamping ring gripping devices and placed and closed fully automatically on the fully filled lid drums. This technical handling measure saves a lot of manual work.

Conclusion:

• - eine gesicherte stabile vertikale Ausrichtung durch absolut horizontale Lage der Spannringe im Stapel,
• - kein seitliches Verrutschen bis zu schiefen Stapeln, die umsturzgefährdet sind,
• - eine maximale Stapelung bis zur vollen Trailerhöhe auf speziellen Paletten mit 3er Stapeln, die mit Stretch-Umwicklung gesichert sind,
• - die Spannringe werden sauber gestapelt in weit aufgespreiztem Zustand angeliefert und können so direkt als Magazinstapel für eine automatische Entnahme durch spezielle Spannring-Greifer z. B. an Deckelfass-Verschließanlagen oder hinter automatischen Abfüllanlagen eingesetzt werden, ohne den Spannhebel vorher erst noch öffnen zu müssen,
• - die konstruktive Formgebung des Querschnittsprofils ermöglicht in einer funktionellen gegenseitig aufeinander abgestimmten Wirkungsweise eine enge Zentrierung und Fixierung von in Linie übereinandergestapelter Spannringe.

The clamping rings according to the invention are characterized by the following advantages:

• - A secure stable vertical alignment due to the absolutely horizontal position of the clamping rings in the stack,
• - no slipping sideways up to crooked stacks that are at risk of falling,
• - maximum stacking up to the full trailer height on special pallets with triple stacks that are secured with stretch wrapping,
• - The clamping rings are delivered neatly stacked in a wide spread condition and can be used directly as a magazine stack for automatic removal using special clamping ring grippers. B. can be used on lid barrel capping systems or behind automatic filling systems without having to open the clamping lever first,
• - The structural shape of the cross-sectional profile enables a tight centering and fixation of clamping rings stacked in a line in a functional, mutually coordinated mode of operation.

Reference list

10th

Tension ring

10 '

stacked clamping ring

12th

Clamping ring locking device

14

Tension lever

16

Drawbar

18th

well-known clamping ring SdT

20th

Steel lid barrel

22

Drum lid

24th

Centerpiece ( 10th )

26

upper clamping ring leg ( 10th )

28

lower clamping ring leg ( 10th )

30th

angled flange edge ( 28 )

32

Centering device ( 26 )

34

vertical gradation ( 26 )

36

horizontal leg piece ( 26 )

38

horizontal deflection ( 34 )

40

palette

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 202013000452 U1 [0002]
• DE 4321550 A1 [0002]

Claims (9)

Tension ring (10) with a widened U-shaped or trapezoidal cross-sectional profile, in which a flat or rounded middle piece (12) - viewed in the intended horizontal locking position - connects an upper tension ring leg (14) and a lower tension ring leg (16), the upper one Clamping ring arm (14) is formed slightly upwards and / or the lower clamping ring arm (16) is inclined slightly downwards from the horizontal, and a collar-shaped flange edge (18) which is angled downwards in the vertical direction is connected to the lower clamping ring arm (16), characterized in that that the clamping ring (10) is designed to be stackable for stacking similar clamping rings (10 '), the upper clamping ring leg (14) on its upper side being a centering device (20) for the flange edge (18) of a similar clamping ring (10 ') which, as a stop to prevent lateral Ver shift of the stacked clamping ring (10 ') is formed. Tension ring (10) after Claim 1 , characterized in that the centering device (20) is designed as a step (22) of the upper clamping ring arm (14) oriented upwards in the vertical direction. Tension ring (10) after Claim 1 or 2nd , characterized in that the upward gradation (22) has a slightly smaller outer diameter than the inner diameter of the flange edge (18) on the lower clamping ring arm (16) of the stacked clamping ring (10 ') on its diameter-largest peripheral outer edge (24), the The difference between the outer diameter of the step (22) and the inner diameter of the flange (18) is approximately 1 mm to 4 mm, preferably 2 mm. Tension ring (10) after Claim 1 , 2nd or 3rd , characterized in that the upper clamping ring leg (14) is inclined or spread upwards with a small opening angle of 10 ° to 20 °, preferably 15 °, and a short horizontally extending leg piece (directly before the step (22) pointing upwards) 36). Tension ring (10) after Claim 1 , 2nd , 3rd or 4th , characterized in that the short horizontal leg piece (36) with the upward gradation (22) forms an angle between 45 ° and 90 °, preferably 60 °. Tension ring (10) after Claim 1 , 2nd , 3rd , 4th or 5 , characterized in that the short horizontally extending leg piece (36), viewed in the radial direction, has a length of approximately 2 mm to 5 mm, preferably 3 mm. Tension ring (10) after Claim 1 , 2nd , 3rd , 4th , 5 or 6 , characterized in that the upward-facing step (22) has a short horizontally oriented bend (24) at its upper free end. Tension ring (10) after Claim 1 , 2nd , 3rd , 4th , 5 , 6 or 7 , characterized in that the short, horizontally oriented bend (24) has a height of 2 mm to 5 mm, preferably 3 mm, from its top to the top of the short horizontally extending leg piece (36). Tension ring (10) after Claim 1 , 2nd , 3rd , 4th , 5 , 6 , 7 or 8th , characterized in that the lower clamping ring leg (16) with a small opening angle of 10 ° to 20 °, preferably 15 °, is inclined or spread out and a short piece of the clamping ring leg (18) directly in front of the downwardly angled flange edge (18) 16) has a somewhat larger opening angle of 20 ° to 30 °, preferably 25 °.

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