DE3323550C2 - - Google Patents

Description

The invention relates to a clamping ring closure a wide neck drum made of plastic with a slip lid according to the preamble of the claim.

Such a plastic ace is from DE-OS 32 38 076 known. With this clamping ring closure, one engages under broken cover flange with its flange segments between Ring flange segments formed on the barrel neck and supplemented thereby the hollow profile of the clamping ring in the circumferential direction. The disadvantage of this cover closure is the insufficient Fall security based on the fact that the elliptical Deformation of the barrel neck when the barrel jacket is opened the clamping ring profile is partially bent up on the floor is so that the tightness of the closure after the elastic deformation of the barrel is no longer guaranteed is and there is even a risk of greater heights that the clamping ring of the flange segments on the cover and on The neck of the barrel jumps off and the lid opens.

DE-OS 27 47 327 is a plastic ace with a cap known that the barrel neck outside overlapping edge with segmented, obliquely arranged approaches shown below, each between them take projections formed on the barrel neck, the lugs of the lid and the projections on the barrel neck one - in Viewed circumferentially - V-shaped groove for receiving a Form the clamping ring. When the barrel is closed, the Tension ring in the loosely tensioned state alternately on the  Guide and support surfaces of the projections on the barrel neck and the approaches on the barrel lid loosely and pulls with increasing Tension the barrel lid down onto the barrel neck. Through the Arrangement of the contact surfaces on the cover attachments little below the contact surfaces of the barrel neck protrusions Tension ring in the tensioned state by the guide and Contact surfaces of the cover attachments upwards and through the Guide and support surfaces of the barrel neck protrusions down pressed, creating a wavy, elastic Deformation of the round spring steel wire Tension ring results if the tension ring is replaced by a conventional one Turnbuckle is tensioned.

The interlocking of lid and barrel neck, in which the Barrel neck protrusions passed through the outer edge of the lid have the consequence that none by means of the clamping ring axial clamping forces evenly distributed over the circumference of the cover and sealing force can be exerted on the lid, whereby the seal between the lid and barrel neck additionally is affected. Finally, when closing the Barrel of the clamping ring can be positioned so that the Turnbuckle is always between two barrel neck protrusions, making it difficult to close the barrel.

The invention is based, for a Wide neck barrel made of plastic with slip lid and a clamping ring to develop the closure in the event of sudden transport loads and under static loads when stacking absolute tightness guaranteed and a great Time intervals generated even locking voltage.

This object is achieved by the features solved in the characterizing part of the claim.

Below is a based on the drawing Embodiment explained in more detail. It shows  

Fig. 1 is a partial perspective view of the lid barrel, the clamping ring is partially omitted to illustrate the closure, and

Fig. 2 and 3 are cross-sections of the cap closure on the lines II-II and III-III of Fig. 1 in an enlarged representation.

The closable with a plastic cover 2 plastic drum 1 according to FIG. 1, for example, blown in a known manner, made of polyethylene, with a portion of the blow mold in the region of Faßhalses 3 in the axial direction is moved together such that the plastic material is compressed, so that over the entire circumference the barrel neck 3 with a certain pitch radially outwardly directed ring flange segments 4 arise. The cross-sectional profile of these ring flange segments 4 is z. B. formed as a half trapezoidal profile.

Above the ring flange segments 4 are in the barrel neck 3 radially inwardly facing annular bead segments 5 which are separated from one another by webs 6 .

The patch on the barrel neck 3 cover 2 has a through an inner edge 7 in the barrel neck 3 immerse the bottom 8 and the barrel neck 3 cross the outer edge 9 with a cover flange 10, which is round divided uniformly so that Deckelflanschsegmente 10 a gebil be det.

Inner edge 7 and outer edge 9 of the cover 2 include an annular groove 11 , into which a sealing ring 12 is inserted, which is pressed against the upper edge 13 of the barrel neck 3 .

The inner edge 7 of the lid 2 is supported on the annular bead segments 5 of the barrel neck 3 when the barrel 1 is mechanically stressed.

The outer edge 9 of the cover 2 has downward standing tongue-like approaches 14 , which are arranged between the cover flange segments 10 a and 4 ring flange segments. When the lid 2 is closed, the ring flange segments 4 formed on the barrel neck 3 coincide with the lid flange segments 10 a . The ring flange segments 4 on the barrel neck 3 complement the cross-sectional partial profile of the Deckelflanschseg elements 10 a to a trapezoidal cross-sectional profile.

A clamping ring 16 with a hollow cross-sectional profile, which can be closed and opened with a turnbuckle, is used to close the barrel cover 2 . The end edges of the clamping ring 16 are supporting rings 16 a, b bent 16, with the de NEN clamping ring 16 on the cover 2 and its of sets 14 is supported. The clamping ring 16 is secured by molded on the Dec kelansätze 14 , circumferential clamping webs 17 , which prevent deformation of the clamping ring 16 and possibly loosening the same from the cover flange 2 and the ring flange segments 4 of the barrel neck 3 . The lower support ring 16 b of the clamping ring 16 is formed into a rolled edge.

To close the barrel 1 , the clamping ring 16 is pushed loosely over the lid flange 10 of the lid 2 placed on the barrel neck 3 and the ring flange segments 4 on the barrel neck 3 . By tightening the turnbuckle, not shown, the clamping ring 16 is pulled together, the cover 2 in the axial direction with the cover flange segments 10 a firmly against the ring flange segments 4 on the barrel neck 3 with simultaneous clamping of the sealing ring 12 between the cover 2 and the upper edge 13 of the Fasshalses 3 is clamped.

Compared to the known barrel lid closures the lid closure described above is the highest Security against jerky axial and / or radial bean spells during transport, especially when falling, and against static loads when stacking the barrels as well a constant locking voltage and a resulting one absolute tightness over long periods. These advantages result from the following features:

The rigidity of the cover 2 is decisively improved by the outer, continuous cover edge 9 . For an additional increase in the rigidity of the lid tra gene arranged in the barrel neck ring bead segments 5 to support from the barrel lid inner edge 7 at large radial loads. The clamping webs 17 on the tongue-like Dec kelansätze 14 prevent bending and loosening of the clamping ring 16 with very large shock loads in the case. Further, the tongue-like, clamped against the barrel neck 3 lugs 14 prevent the clamping bars 17 in an elastic deformation of the elliptical Faßhalses 3 large under the action of external forces a release of the cover. 2 By evenly tightening the lid 2 in the axial direction against the barrel neck 3 when the turnbuckle of the tension ring 16 is closed, the sealing ring 12 between the lid 2 and barrel neck 3 is subjected to a uniform sealing force.

Finally, the opening and closing of the cover 2 compared to known cover closures is considerably simplified, since one does not have to align the clamping ring 16 and the cover 2 can be gripped at the edge of the cover.

Claims (1)

Clamping ring closure of a wide-necked barrel made of plastic with a slip lid, which has a bottom that dips into the barrel neck via an inner edge and an outer edge that overlaps the barrel neck with a radial, evenly spaced lid flange, which is formed by means of a tension ring with a trapezoidal hollow cross-section against a molded on the barrel neck Closure element is clamped, a sealing ring inserted into the annular groove between the inner and outer edges of the cover being pressed against the upper edge of the barrel neck, the outer edge of the cover having tongue-like projections with radially outwardly projecting clamping webs in the region of the interruptions of the cover flange, characterized in that that between the shoulders ( 14 ) located the cover flange segments ( 10 a) with the barrel neck ( 3 ) molded, radially outwardly directed ring flange segments ( 4 ), the cross-sectional profiles of the cover and ring flange segment Supplement e ( 10 a , 4 ) to the cross-sectional profile of the clamping ring ( 16 ), which engages around the cover flange segments ( 10 a) and the ring flange segments ( 4 ) and with its lower edge ( 16 b) , which is designed as a rolled edge, through the on the cover attachments ( 14 ) molded, circumferential clamping webs ( 17 ) is secured.