EP0598160A1 - Case, especially for items of jewellery, method for producing such cases and apparatus for carrying out this method - Google Patents

Abstract

A case, which is used especially for accommodating items of jewellery, is composed of two strips (1) and (2) which can be punched out of a rigid material. The two strips (1) and (2) consist essentially of a rectangular central part (3) and (12) respectively. Arranged on each central part (3), (12) in each case on two mutually opposite sides is a side wall (4, 8, 13, 14) which can be folded over a first fold (5, 9, 15, 16). Each side wall (4, 8, 13, 14) is provided with a flap (7, 10, 17, 18) which can be folded over a further fold (6, 11, 19, 20) aligned parallel to the first fold (5, 9, 15, 16). The two strips (1, 2) are placed crosswise one on the other and connected to one another, such that the two central parts (3, 12) come to rest on one another. The side walls (4, 8, 13, 14) and the flaps (7, 10, 17, 18) can be folded to form a case. <IMAGE>

Description

The invention relates to a case, in particular for holding jewelry, according to the preamble of claim 1.

Furthermore, the invention comprises a method for producing such cases and an apparatus for carrying out the method.

Cases of the type mentioned are known. In such cases jewelry items such as rings, pendants, necklaces, earrings, bracelets, wristwatches, but also other valuables such as coins are presented and stored. These cases preferably consist of a box-like base piece made of plastic, in which an insert is arranged, which serves to receive and present the object to be accommodated therein. The box-shaped base piece is provided with a cover made of plastic, which is box-shaped or dome-shaped, and which can be placed on the base piece, or is connected in an articulated manner and provided with a locking mechanism.

The manufacture of such cases is complex and therefore expensive. These cases are also shipped in the closed form from the producer to the consumer, which means that the space required for the items is large.

For cases that are no longer used, environmentally friendly disposal is not unproblematic, since the components to be disposed of consist primarily of plastic.

The object of the invention is to provide a case which is simple to manufacture, which requires little space for shipping, which is made of a material, whose environmentally friendly disposal is unproblematic and which meets the aesthetic requirements for the presentation.

According to the invention, this object is achieved by the features specified in the characterizing part of claim 1.

Due to the fact that the folding box is formed by two strips which are punched out of the rigid or sheet-like rigid material, these strips can be optimally arranged next to one another or in a row one behind the other on the corresponding rigid material, whereby waste residues can be minimized.

The connection of the two strips, which are laid crosswise one above the other in such a way that the two central parts come to lie on one another, is preferably carried out by gluing.

In a preferred embodiment, the two flaps of the outer strip, which encloses the folded inner strip when folded, are provided with a closure device. As a simple embodiment, this closure device consists of a tab which extends one flap of the strip and which can be inserted into a slot, which slot is made in the other flap of the same strip by punching out.

By crossing and joining the two strips forming the folding box crosswise, the central part forming the inner bottom of the case can be provided with a punched-out opening or with a fold-out flap which can be obtained by means of punching be that can have a virtually any shape that can be optimally adapted to the piece of jewelry that is to be accommodated in the case. With this arrangement, the part receiving the piece of jewelry can be produced in one operation by punching out the strip, so that no additional insert has to be introduced into the case, which, in addition to simplification, also reduces the cost of manufacture.

To improve the aesthetic effect of such a case, the two strips made of rigid material can be provided on one or both sides with a coating that is fabric or film-like. Advantageously, these coatings are glued to the strip only along the contours of the cut of the strips, and only in the edge region thereof. As a result, when the strips are folded into the corresponding case, there is no tension on the covers and the covers can nestle against the corresponding strips. Advantageously, the locations of the strips forming the fold, if they are each provided with a coating on both sides, are completely cut through, so that the fold is formed only by the material of the two coatings. This creates a precise and clean edge when folding.

Advantageously, the rigid material from which the strips are formed is made of cardboard, which enables inexpensive production and does not cause any problems when such a case is disposed of.

Another possibility for producing such a case is that the strips are punched out of corrugated cardboard, which corrugated cardboard underneath the term "microwave" is available on the market. In order to obtain clean edges with this material, the edge areas can be pressed together and glued using the adhesive present in the corrugated cardboard, which is advantageously done by heat sealing.

Another object of the invention is to provide a method for producing a case, the strips of which are each provided with a coating on both sides, which strips can be produced in a simple manner and in one operation, the solution according to the invention by that specified in the characterizing part of claim 9 Characteristics.

Another object of the invention is to provide a device for carrying out the method for producing such cases, the strips of which are provided on both sides with a coating, which is achieved according to the invention by the features specified in the characterizing part of claim 10.

Advantageous embodiments of the device for carrying out the method result from the further dependent device claims.

Embodiments of cases according to the invention for receiving jewelry, a method for producing such cases, which are provided with coatings, and a device for carrying out the method for producing such cases are explained in more detail below by way of example with reference to the accompanying drawings.

• Fig. 1 die beiden aus bogen- oder bahnförmigen, biegesteifen Material ausgestanzten Streifen;
• Fig. 2 eine Draufsicht auf die beiden kreuzweise übereinandergelegten und zusammengefügten Streifen;
• Fig. 3 eine perspektivische Darstellung der beiden zusammengefügten Streifen gemäss Fig. 2, aus der die Zusammenfaltung ersichtlich ist;
• Fig. 4 eine perspektivische Darstellung, die das zusammengefaltete Etui zeigt, wie es aus den in Fig. 3 dargestellten Streifen entsteht;
• Fig. 5 eine perspektivische Darstellung eines anderen Ausführungsbeispiels eines Etuis im aufgefalteten Zustand;
• Fig. 6 eine perspektivische Darstellung des vollständig zusammengefalteten Etuis gemäss Fig. 5;
• Fig. 7 eine perspektivische Darstellung eines weiteren Ausführungsbeispiels eines Etuis im aufgefalteten Zustand;
• Fig. 8 eine perspektivische Darstellung des vollständig zusammengefalteten Etuis gemäss Fig. 7;
• Fig. 9a eine Ansicht eines in den Zentralteil eines Streifens eingestanzten Lappens, der der Aufnahme eines Anhängers mit Kette dient;
• Fig. 9b eine Schnittdarstellung entlang Linie IX-IX gemäss Fig. 9a, den ausgeklappten Lappen zeigend;
• Fig. 10a eine Ansicht auf einen anders gestalteten Lappen, der in den Zentralteil eines Streifens gestanzt ist, der der Aufnahme einer Armbanduhr dient;
• Fig. 10b eine Schnittdarstellung entlang Linie X-X gemäss Fig. 10a durch den ausgeklappten Lappen; und
• Fig. 11 eine Schnittdarstellung durch eine Vorrichtung zur Herstellung von Streifen, die beidseitig mit einem Überzug versehen sind, aus welchen ein Etui zusammengesetzt ist.

It shows:

• Figure 1 shows the two strips punched out of arcuate or web-shaped, rigid material.
• FIG. 2 shows a top view of the two strips, which are placed one above the other and joined together; FIG.
• FIG. 3 shows a perspective illustration of the two joined strips according to FIG. 2, from which the folding can be seen;
• Fig. 4 is a perspective view showing the folded case as it results from the strips shown in Fig. 3;
• 5 shows a perspective illustration of another exemplary embodiment of a case in the unfolded state;
• FIG. 6 is a perspective view of the completely folded case according to FIG. 5;
• 7 shows a perspective illustration of a further exemplary embodiment of a case in the unfolded state;
• FIG. 8 is a perspective view of the completely folded case according to FIG. 7;
• 9a is a view of a tab stamped into the central part of a strip, which is used to receive a trailer with a chain;
• FIG. 9b shows a sectional view along line IX-IX according to FIG. 9a, showing the flap that has been unfolded;
• 10a is a view of a differently shaped tab which is punched into the central part of a strip which is used to hold a wristwatch;
• FIG. 10b shows a sectional view along line XX according to FIG. 10a through the flap which has been folded out; and
• Fig. 11 is a sectional view through an apparatus for producing strips, which are provided on both sides with a coating from which a case is composed.

In Fig. 1, the two strips 1 and 2 are shown, from which a case for holding a piece of jewelry is composed. These two strips 1 and 2 are cut out of a rigid material which is in the form of an arch or web by punching. In this exemplary embodiment, the strip 1 consists of a square central part 3. A side wall 4 is provided on one side of this central part 3 and can be folded about a first fold 5 with respect to the central part 3. The end of the side wall 4 is formed by a further fold 6, which is aligned parallel to the first fold 5 and around which a flap 7 is foldably arranged.

On the side of the central part 3, which is opposite to the side on which the side wall 4 is attached, a side wall 8 is also attached, which is foldable about a first fold 9, and which is also provided with a flap 10, which with respect to the Side wall 8 is foldable by a further fold 11.

The strip 2 is constructed in the same way as the strip 1. It also has a central part 12, which in this example is also square in shape, and which is provided on two opposite sides with side walls 13 and 14, each of which can be folded by a first fold 15 or 16 with respect to the central part 12. Each side wall 13 and 14 is equipped with a flap 17 and 18, both flaps 17 and 18 being foldable with respect to the corresponding side wall 13, 14 by a further fold 19 or 20.

A flap 21 is cut into the central part 12 of the strip 2, which is accomplished during the punching out of the strip 2 from the rigid material, which flap 21 around the fold 22 from the Plane, which is formed by the central part 12, can be folded out. The flap 21 can have a virtually any shape that is adapted to the item of jewelry that is to be held by this flap 21.

The flaps 7 and 10 of the strip 1 and the flaps 17 and 18 of the strip 2 have side edges which converge slightly towards the outside. The length of the respective flaps 7, 10, 17 and 18 in the longitudinal direction of the strip 1 or 2 is approximately three quarters of the length of the corresponding central part 3 or 12, also in the longitudinal direction of the strip. The flap 7 of the strip 1 is provided with a slot 23, which corresponds to the tab 24 which is formed on the flap 10 of the strip 1.

The side walls 13 and 14 of the strip 2 are provided on each of their outer sides with a corner piece 25, which can be folded around a fold 26 which lies in the extension of the free edge side of the central part 12.

As can be seen from FIG. 2, the two strips 1 and 2 according to FIG. 1 are placed crosswise one above the other and connected to one another by gluing. For this purpose, the strip 2 is placed on the strip 1 in such a way that the central part 12 of the strip 2 comes to lie congruently on the central part 3 of the strip 1, the strips 1 and 2 being placed one on top of the other crosswise. The two central parts 3 and 12 are preferably bonded to one another in such a way that only narrow edge strips adhere to one another along the sides of the central parts.

The cross formed by the two strips 1 and 2 according to FIG. 2 can now, as shown in FIG. 3, be folded into a case. This will be done first the corner pieces 25 of the side walls 13 and 14 of the overlying strip 2 are folded upwards by 90 degrees about the corresponding fold 26. Then the two side walls 13 and 14 of the strip 2 can also be folded upwards by 90 degrees, after which the two flaps 17 and 18, which now stand vertically upwards, are folded against one another so that they come to lie parallel to the central part 12. Then the two side walls 4 and 8 of the underlying strip 1 are also folded upwards by 90 degrees, and then the flaps 7 and 10, which are now vertically upward, are folded against each other until they are also in a plane parallel to the central part 3 and onto the two flaps 17 and 18 of strip 2 come to rest. Here, the flap 10 is placed on the flap 7. The tab 24 can be inserted into the slot 23, whereby the case now created remains in the closed state.

The case thus created can be seen in FIG. 4 in the fully folded and closed state. The corner pieces 25 attached to the side walls 13 and 14 ensure that when the case is closed, the side edges 27, 28 and 29 and the invisible side edge 30 are clean.

5 and 6 a further embodiment of such a case is shown. As can be seen from FIG. 5, the two strips 1 and 2, which in turn are placed crosswise on top of one another and joined together, are provided with side walls 4, 8, 13 and 14, which compared to the example shown in FIGS. 1 to 4, have a greater height. As can be seen in the opened state of the case, shown in FIG. 5, the tab 21, which is stamped into the central part 12 of the strip 2, and around the fold 22 is opened up, essentially a circular shape, in which lateral indentations 31 and 32 are provided. The flipped out flap 21 is bent in such a way that essentially a cylindrical outer surface is formed, onto which, for example, a finger ring can be attached. Fig. 6 shows the folded and closed corresponding case.

A further embodiment variant of a case, which is provided for example for receiving a coin, is shown in FIGS. 7 and 8. In the strip 2, which is placed crosswise on the strip 1 and connected to it as in the previous examples, a circular opening 33 is punched out in the central part 12, which corresponds to the size of the coin to be received. In order to be able to remove the coin inserted into the opening 33, the opening 33 is provided with a bulge 34. The side walls 4, 8, 13 and 14 can be kept very low in this embodiment, as can be seen in particular from the folded state of the case, shown in Fig. 8.

How the tab 21 of such a case for receiving a necklace with a pendant can be designed is shown in FIGS. 9a and 9b. 9a shows in a top view of the central part 12 of the strip 2 that the stamped-in tab 21 has a substantially rectangular shape and that the tab 21 can be folded out of the plane of the central part 12 around the fold 22, as shown in the sectional view according to FIG Fig. 9b, which shows a section along line IX-IX of Fig. 9a, can be seen. The flap 21 has an indentation 35 on the side 34 facing away from the fold 22. In the two parts 36 and 37 protruding to the side of the indentation 35, there is again a small one Lugs 38 and 39 are stamped in, which are again folded out relative to the lobe 21, as can be seen in particular in FIG. 9b. The pendant of the chain can now be placed on the tab 21, the chain is guided around the two small tabs 38 and 39, while the rest of the chain through the indentation 35 of the tab 21 into the cavity 40, which is between the unfolded tab 21 and the central part 12 is created, guided and housed there.

How, for example, the receptacle for a wristwatch can be designed in such a case is shown in FIGS. 10a and 10b. In the central part 12 of the strip 2, which in turn is placed crosswise on the strip 1 and connected to it, an essentially T-shaped punching is provided, which forms the tab 21. As can be seen from FIG. 10b, the T-shaped punching is bent out by 90 degrees from the central part 12 by the fold 22, after which the bar 41 of the T-shaped punching out, which forms the tab 21, is bent by 90 degrees by the fold 42 bent back so that the bar 41 comes to lie parallel to the central part 12. The watch now comes to rest on the bar 41, the bracelet can be placed around the front ends of the bar 41, so that the ends of the bracelet come to rest in the cavity 43 which is formed by the bar 41 to the central part 12 underneath.

Such cases can be designed in a variety of ways, the design of the rag in particular being adaptable to the object to be accommodated in the case and the presentation thereof. The two strips 1 and 2, from which these cases are formed, can for example be made from a fine corrugated cardboard, which is commercially available under the name "Microwave". For this, the Strips 1 and 2 are punched out of the corrugated cardboard in the appropriate shape, the punching knife being equipped in such a way that the cut-out strip is pressed together along the cut edges in the edge area and glued by heat sealing using the adhesive present in the corrugated cardboard. This manufacturing measure nicely forms all edges of the strips.

The strips can also be made of cardboard, whereby the cardboard can be provided with a coating on one or both sides. By choosing the covers, the most diverse aesthetic effects of such cases can be achieved.

A method according to the invention for producing strips from which such cases are produced, which are provided with a coating on both sides, and an apparatus for carrying out this method are described in more detail below with reference to FIG. 11. In a punch press, not shown, which has a stationary punch table 44 and a punch 45 which can be moved up and down against the punch table, the rigid material is fed in time with the stroke movement of the punch 45. The rigid material consists of cardboard, which is fed in the form of a sheet or web and rests on the punching table 44. With a first punching die 56 attached to the punching die 45, the cardboard is severed at the points which form the folded edges of the corresponding strip 1 or 2. The cardboard 46 thus provided with incisions is advanced by the appropriate amount in the direction of arrow 47. Through an opening 48 in the punching table 44, an adhesive film 49 and the lower coating are applied from below against the carton 46 via the roller 51. In the area of the opening 48 is from above the cardboard is an adhesive film 52 and then the upper coating 53 is placed on the cardboard 46, guided by the rollers 54 and 55. In order to be able to place the adhesive film 52 and the upper coating 53 in the desired area on the cardboard 46, the die 56 is included provided with a slot 57 through which adhesive film 52 and upper coating 53 can be passed from the outside.

The cardboard 46 with the adhesive film 49 underneath and the lower coating 50 and the adhesive film 52 above and the upper coating 53 are now fed together on the punching table 44 to the second die 58. This second die 58 consists of die cutters 59 with which the shape of the strips 1 and 2 and the shape of the flap 21 are stamped into the strip 2. Embossing dies 60 are displaceably mounted in the punching knives 59 and are pressed with springs 61 against the front edge of the punching knives 59. These embossing dies have narrow areas running along the cutting edges of the punching knives 59. The dies 60 and the counter surfaces of the punching table 44 are heated by heaters 62, which are accommodated in the punching punch 45 and in the punching table 44. When the second die 58 moves down against the punching table 44, the coatings 50 and 53 and the adhesive films 49 and 52 are pressed against the cardboard, connected to the cardboard 46 by heat sealing by the heated stamping dies 60 in the edge region of the cuts, after which the punching knives 59 continue drive up and cut out the strips 1 and 2 as well as the flap 21, while the die 60 remains against the force exerted by the springs 61. After the punch 45 has been raised and the processed material has been pulled forward, the strips 1 and 2 which have been cut out and processed can be removed from the sheet or web.

Foil-like materials, fabric-shaped materials such as silk or the like can be used as coatings 50 and 53, depending on the requirements placed on the cases in terms of appearance.

The folds of strips 1 and 2 are formed only by the two coatings 50 and 53, since the cardboard is completely cut through in this area. This results in beautiful and precise folds.

The two punching dies 56 and 58 can be designed in such a way that for each punching die a plurality of strips arranged one behind the other and / or next to one another are processed simultaneously on the rigid material which is fed into the punching press in sheet or web form, whereby several per punching stroke of the punching press manufactured strips.

Claims (13)

Case, in particular for holding jewelry items, which consists of a rigid material formed into a box, characterized in that the box is designed as a folding box consisting of a flat blank, which blank essentially consists of two strips (1) and ( 2) is composed, both of which have an essentially rectangular central part (3), (12) and on which two central parts (3), (12) one on each of two opposite sides by a first fold (5, 9, 15, 16) foldable side wall (4, 8, 13, 14) is arranged, which is arranged around a further fold (6, 11, 19, 20), which is essentially parallel to the first fold (5, 9, 15, 16) foldable flap (7, 10, 17, 18) is provided that the two strips (1) and (2) are placed crosswise one above the other and connected to one another so that the two central parts (3), (12) come to lie on one another. Case according to claim 1, characterized in that the four flaps (7, 10, 17, 18) of the two strips (1, 2) form the cover of the case, and that the two flaps (7, 10) of the one strip (1 ), which come to rest on the outside on the two flaps (17, 18) of the other strip (2) in the folded state of the case, are provided with a closure device. Case according to claim 2, characterized in that the closure device consists of a tab attached to the one flap (10) of the one strip (1) (24), which can be inserted into a slot (23) which is arranged in the other flap (7) of the one strip (1). Case according to one of claims 1 to 3, characterized in that the central part (12) forming the inner bottom of the case of the two strips (1) and (2) placed one above the other with a cross having a device in the form of a punched-out opening (33) or one in the central part (12) is provided with a flap (21) which is cut out and which can be used to hold the piece of jewelry which can be accommodated in the case. Case according to one of claims 1 to 4, characterized in that the strips (1, 2) made of rigid material are provided on at least one side with a fabric or film-like coating (50, 53), which coating has a shape corresponding to the respective strip , and which coating (50, 53) is connected to the corresponding strip (1, 2) at least along the cut edge regions. Case according to claim 5, characterized in that the strips (1, 2) are provided on both sides with a fabric or film-like coating (50) and (53), that the two coatings (50, 53) along one of the contours of the blank the strip (1, 2) of the edge strip running is glued to the strips (1, 2), so that the points of the rigid material of the strips (1, 2) forming the folds are completely severed and the folds only by the material of the two coatings ( 50, 53) are formed. Case according to one of claims 1 to 6, characterized in that the rigid material from which the strips (1, 2) are formed consists of cardboard. Case according to one of claims 1 to 4, characterized in that the rigid material from which the strips (1, 2) are formed consists of corrugated cardboard (microwave), in which the edge regions are pressed together along the cut edges and using the in the corrugated cardboard existing adhesive are glued. A method of manufacturing a case according to claim 6 or 7, characterized in that the rigid material in sheet or sheet form is fed to a first die, which cuts through the folds of the strips, so that the area of the sheet or sheet provided with incisions a further processing station is continued, with an adhesive film and a fabric or film-like covering being applied to the rigid material during the continuation from above and below, and that in the further processing station the coatings by means of the adhesive film along the outer contour and the additional cuts to be made in edge strips are hot stamped with the rigid material and then finished cutting in the same processing station, after which two strips belonging together are placed crosswise on top of one another and joined together. Apparatus for carrying out the method according to claim 9, characterized in that a first die (56) for pre-cutting is arranged in a punch press on a punch (45) that can be advanced in the direction of the punch press on a punch table (44) by feed devices rigid material (46) a second die (58) is arranged for finish punching, that in the punch table (44) between the two dies (56) and (58) there is an opening (48) for feeding the lower cover (50) and the adhesive film ( 49) is provided underneath the rigid material (46), and that the upper cover (53) and the upper adhesive film (52) through a slot (57) made in the first die (56) between the two dies (56) and ( 58) can be fed onto the rigid material (46). Apparatus according to claim 10, characterized in that the second punching die (58) consists of a punching knife (59) for punching the strips (1, 2) into the shape, in which an embossing stamp (60) is slidably arranged in the punching direction and is held in such a springy manner that it can be pressed together with the punch knife (59) onto the strips (1, 2), embosses the edge regions along the shape of the strips (1, 2), and can be pushed back with respect to the punch knife (59) which moves forward. Apparatus according to claim 11, characterized in that the second die (58) is equipped with a heater (62) for heating the die (60). Device according to one of claims 10 to 12, characterized in that the first die (56) with a plurality of die cutters and the second die (58) corresponding to the first die (56) with a plurality of die cutters (59) and embossing dies (60) arranged therein simultaneous processing of several strips (1, 2) arranged one behind the other and / or next to one another on the rigid material (46).

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