DE1250768B - - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

B 65b

German class: 81 a -1

Number: 1 250 768

File number: E 25466 VII b / 81 a

Filing date: September 5, 1963

Opened on: September 21, 1967

The invention relates to a device for closing a container made of thin material, such as B. cellulose, plastic or metal, by first folding over the upright container edge around the upstanding edge of an inserted lid and a subsequent joint Fold the folded lid and container edge into the lid level with a stationary one Die for receiving the container with the lid inserted, one above the container die Folding device consisting of an inner punch and a ring punch that is concentric to it with an inwardly conical lower edge.

It is already known to close a filled container that is directed radially outward To fold the edge together with a flat closure plate resting on the edge in such a way that that the container edge includes the plate edge, whereupon the folded lid and container edge into the Lid level is turned over.

A known device for closing a container leads by means of a gripping head with raised edges formed lid so far into the container opening that the container edge bent over in this way by two folding tools attacking one after the other on the edge of the container is that it completely embraces the raised edge of the lid. For a subsequent joint laying down the folded lid and container edge in the lid plane, this device is not designed.

Finally, a closing device for objects enveloped with metal foil material is also over Chocolate is known in which the folding device arranged above the container die is made an inner punch and a ring punch concentric to this. This device closes with chocolate od. The like. Filled wells in a metal foil tape in which they the outwardly protruding edges of the metal foil band over a flat, on the chocolate surface arranged cover folds. However, this device is not for a first folding over of an upright Container edge around an upstanding edge of an inserted lid with the following formed by folding the folded lid and container edge into the lid plane.

The object of the invention is to machine a thin-walled container to be closed by folding the edge of the container and the lid in two stages.

To solve this problem, a Vorrich device for closing a container
made of thin material

Applicant:

Establishments L. Techy-Tomme,
Techy Freres & Co.,
Montceau-sur-Sambre (Belgium)

Representative:

Dipl.-Ing. C. Wallach, patent attorney,

Munich 2, Kaufingerstr. 8th

Named as inventor:

Sava Byron Franghia,
Gentilly, Seine (France)

Claimed priority:

France 10 September 1962 (908 996)

device of the type mentioned for closing a container made of thin material, such as. B. cellulose, Plastic or metal, provided according to the invention, that a die in a known manner surrounding and relative to this together with the ring punch displaceable jacket sleeve, the upper Edge in the starting position for the first folding process approximately at the level of the flanged edge of the lid stands and supports this and wherein the inner punch in each case at the beginning of the first folding process and the subsequent bending of the folded edge of the container and lid in a position above the Container edge is held.

According to a preferred embodiment of the invention it is provided that the upper edge of the jacket sleeve conically outwards and about the same slope as the lower conical edge of the Owns ring stamp.

In the following an embodiment of the invention is described with reference to the drawing. In the drawing shows

F i g. 1 a longitudinal section through a finished container,

F i g. 2 to 7 the device designed according to the invention in partial longitudinal section, the FIG. 2 to 4 the first production stage and F i g. 5 to 7 represent the second production stage.

709 648/210

In Fig. 1 is a provided with its cover Container shown after the folding process.

As can be seen from FIGS. 2 to 7, the die generally rests by means of a support 2 the frame of a machine not shown; The profile and cross-section of this die correspond the shapes of the object to be folded. All possible geometric container profiles can be used as well as all possible cross-sections can be used, and it is sufficient to use the required on the machine To arrange parts that correspond to the shape of the container to be processed.

The container shown in the drawing is frustoconical, and it has a flat bottom 3, to which the frustoconical smooth or corrugated wall 3 α is connected. Furthermore, the container has a shoulder 3 b serving to support the inserted lid and an upright container edge 3 c extending parallel to the container axis. The cover consists of a smooth or ribbed base 4, from which a flanged edge 4 α protrudes upwards. The length of the protruding beaded edge 4 a is at most equal to the length of the protruding container edge 3 c.

A jacket sleeve 5 is arranged concentrically to the die 1 and slidably on it. The top 5 α of the die is conical in shape, corresponding to a cone, the tip of which lies on the axis of the device. The jacket sleeve 5 is normally arranged such that the highest part of the conical top is at the level of the edge of the protruding flange 4 a of the lid; in this way the edges of the lid and the container are well supported during the further operations described below. The jacket sleeve is supported on the frame of the device by means of springs 6.

Above the die is a cylindrical inner punch 7 arranged on the axis of the die 1; the cross section of the inner punch 7 corresponds to this upper cylindrical part of the die 1 so that it can engage in this part. Concentric to that Stamp 7, a ring stamp 8 is also arranged. Inner punch 7 and ring punch 8 become independent controlled from each other by a suitable device; both stamps must be slightly on top of each other can slide. The underside 8 a of the ring die is also conical and can be used to plant come to the conical top of the sleeve 5 and cause it to be entrained.

The closing device works in two stages. In the first stage, the container previously filled and provided with its lid is inserted into the die 1. The ring punch 8 is then set in motion in the direction of the arrow Z ₁ , while the inner punch 7 remains in its position. Due to the conical underside 8 α of the ring die 8, the upstanding container edge 3 c of the container wall now undergoes a first partial deformation according to an angle corresponding to the cone of the upper side. Then the ring punch 8 comes to rest in relation to the sleeve 5, whereupon the inner punch 7 is _{set in motion in the direction of the arrow / 2} (FIG. 4); the ring die remains in its position. When the inner punch 7 enters the cylindrical upper part of the container, the punch takes the inclined edge 3 d with it during its movement in such a way that the fold is completed parallel to the axis of the container. At the end of the first stage, the raised beaded edge 4 α of the lid is enclosed inside and outside by the container edge.

In the second stage, the ring punch 8 takes the jacket sleeve 5 with it when it moves in the direction of the arrow / ₄ , whereby a further angular deformation of the new edge 10 (FIG. 6) is achieved; this deformation corresponds to the cone of the surface 5 a and 8 a. The inner plunger 7 then also moves downwards and presses the edge together in a plane perpendicular to the container axis, as shown at 11 in FIG. 7 is shown.

In the device formed according to the invention, the container provided with its lid supported exactly at the points where the folding process is carried out, which with a little resistant material of small thickness is important. As a result, the container cannot be deformed which could affect the appearance of the finished article. All Movement processes of the device are controlled by suitable cams in such a way that the The folding process can be carried out very quickly by simple manual or automatic control.

Claims (2)

Patent claims: 1. Device for closing a container made of thin material, such as. B. cellulose, plastic or metal, by first folding the upright container edge around the upright edge of an inserted lid and a subsequent joint folding of the folded lid and container edge in the lid plane, with a fixed die for receiving the container with an inserted lid, a Folding device arranged above the container die, which consists of an inner die and a ring die concentric to it with an inwardly conical lower edge, characterized by a casing sleeve (5) which surrounds the die (1) in a known manner and can be displaced relative to it together with the ring die (8) ), the upper edge of which is in the starting position of the lid (4 a) and supports it, and the inner die (7) is held in a position above the container edge at the beginning of the first folding process and the subsequent bending of the folded container and lid edge. 2. Apparatus according to claim 1, characterized in that the upper edge (5 a) of the jacket sleeve (5) extends conically outward and has approximately the same inclination as the lower conical edge (8 a) of the ring punch. Considered publications:
German Patent Nos. 411 557, 501 577; Austrian Patent No. 211 231;
British Patent Nos. 324 272, 813 638; U.S. Patent Nos. 1,689,018, 1,837,396, 1,843,536, 1,876,484, 1,908,822, 2,767,537, 2,979,224. 1 sheet of drawings