DE202017006182U1 - Apparatus for thermal hot stamping of products, preferably of foodstuffs - Google Patents

Abstract

Device (1) for thermal hot stamping of products (7), preferably of foods, at least consisting of: - a movement system (2) which has at least one heating punch unit (3), wherein the one heating punch unit (3) via the movement system (2) can be positioned in at least two dimensions, - wherein the at least one heating punch unit (3) has at least one thermally adjustable heating element (4) and at least one hot stamp (6) which carries a motif for hot stamping the product (7), and - at least one stripping element (5), which allows a separation of hot-stamped product (7) and hot stamping die (6) and - at least one to the movement system (2) synchronously movable conveyor belt (8) which moves at least one product to the device (1).

Description

The invention relates to a device for the thermal hot embossing of products, preferably foods according to claim 1.

State of the art

Apparatus for thermal hot stamping of products are well known.

For example, in the DE 10 2004 014 373 B4 discloses an embossing stamp for hot stamping, which has a base layer on which a Nutzlage is provided. The useful layer consists, for example, of brass, copper or a photopolymer and is engravable, etchable, washable or structurable by means of a laser. The base layer consists of a ferritic material to magnetically clamp this known stamp on a machine table or a rotating body. In these known stamps, it is therefore only about a motif, ie the surface structure, to bring in an easily editable Nutzlage, and then simply clamp the stamp magnetically on a machine table or a rotating body can.

From the DE 1 161 568 B a further embossing stamp is disclosed with a stamp body having an elastic layer. The elastic layer forming the use layer of the embossing stamp may be formed with a surface structure, or it may be provided with a flexible metal surface.

The devices known from the prior art for hot embossing of products have the disadvantage that only individual products can be characterized successively thermally. On the other hand, the embossing result on the product can vary greatly, since in the known devices, the contact time of the embossing die with the product and the temperature of the stamp can not be adjusted depending on the product.

Description of the invention

The inventors have therefore set themselves the task of providing a device for the thermal hot embossing of products available, which allows a continuous hot stamping of several products and in which at the same time the embossing pattern is product-specifically adaptable.

This object is achieved by a device for thermal hot stamping of products according to claim 1.

The inventors have realized that it is possible to use a special movement system, e.g. B. a gantry drive, which receives at least one hot stamping punch to achieve an exact positioning of the hot stamping die to the product.

The inventors have further recognized that a continuous hot stamping of products is made possible by a transport belt running synchronously with the movement system, which conveys one or more products to the device. By means of the controlled gantry axis and a synchronized with this gantry axis conveyor belt uniform hot stamping results are made possible, the contact time of the hot stamping die to the product and the surface temperature of the hot stamping die are adjustable.

The new device is therefore suitable for many products such as intended for human consumption, eg. As baked goods, meat or fish products and wood, leather, plastics and cardboard can be hot stamped hereby.

Based on the findings gained, the inventors propose a device for thermal hot embossing of products, preferably food, at least consisting of a movement system, which has at least one heating punch unit, wherein on the movement system, a Heizstempeleinheit can be positioned in at least two dimensions, wherein the at least a Heizstempeleinheit has at least one thermally adjustable heating element and at least one hot stamping die, which carries a motif for hot stamping of the product, and at least one stripping element which allows separation of hot stamped product and hot stamp and at least one moving system synchronously movable conveyor belt, which at least one product for Device moves.

The invention thus an apparatus for continuous hot stamping of u. a. Food in series in a continuous process without interrupting the production process allows. The preferably electrically heated hot stamping die is preferably synchronized by means of a controlled gantry axis with the conveyor belt on which the products are located. The result of the hot stamping can be adjusted via the contact time of hot stamp and product and by the surface temperature of the hot stamping die.

It is advantageous if the movement system is designed as a gantry axis, wherein at least two synchronized motors which position at least one heating stamp unit with respect to the product. A gantry drive or a gantry axis designates a special one Electromechanical motion system of a geometric axis in a machine in which two separate feed motors move a common drive axis. Special functions of the drive control and the (frequency) converters allow the two motors to operate in an angle-synchronous mode. This has the consequence that the gantry drive behaves as if it had only one feed motor. A gantry drive eliminates the need for a mechanical shaft connection between the two portal sides. Usually both drive trains have their own position measuring system, so that the actual position of the drive is determined by the controller by offsetting it.

Alternatively or additionally, the heating stamp unit may have a layer structure. A special layer or sandwich construction of the heating stamp unit prevents changes in the length of the Heizstempelsystems due to thermal expansion. Thus, a consistent hot stamping result is made possible due to non-occurring geometric deformations. In addition, this ensures that the heating stamp unit in the guiding or fastening devices can not tense and can be changed when hot.

The hot stamp can have, at least on the surface which comes into contact with the product, a coating which prevents adhesion of the product to the hot stamp during the hot stamping process. Possible special coatings for the hot stamping die are blackings, hard chrome plating, chemically nickel, DLC coating (DLC means diamond like carbon, Teflon or even sol-gel coatings).

A possible variant of the invention provides that the conveyor belt has at least one positioning means for the correct positioning of the product to the hot stamping die. For example, in the case of rolls that are to be branded, a half-shell-shaped receptacle may be provided as adapted geometry, so that the rolls are automatically positioned in the correct position in the conveyor belt to ensure centering and thus correct position of the branding on the bread roll surface. For the purposes of the inventors, however, the positioning means can also provide an optical position detection of the product and a drive-controlled orientation of the product.

It is advantageous if the stripping element is designed as a spring-loaded annular component which at least partially surrounds the hot stamping punch. If, for example, in the hot embossing process, the hot stamping die is in contact with the product in order to emboss a motif, then in this contact time the stripping element is simultaneously pressed against the product and the spring is tensioned. When separating the hot stamping stamp from the product, the tensioned spring together with the stripping element pushes the product away from the hot stamping punch and thus prevents the product from sticking to the hot stamping punch. Alternatively, the wiping element may also be designed as a motor-driven wiper or as an air blast blown between the hot stamping die and the product.

In addition to the function of separating the hot stamping die from the product, the scraping element may also have integrated a cleaning function for the surface of the hot stamping stamp. For example, during the separation process, the stripper element can simultaneously mechanically clean the surface of the hot stamping punch.

Presently not claimed embodiments provide that on the device at least one stripping device for the product and a waste collection device are arranged to remove contaminants such. B. Crumbling during the production process to avoid downtime.

The hot stamp should be releasably connected in the sense of a stamp exchange system with electrical contact by a plug-in system to the device so that interruption times are minimized when changing stamps.

The heat capacity and thermal conductivity of the materials used in the hot stamping unit and in the hot stamping die must be specifically tailored to the corresponding product to ensure consistent branding results.

Preferred developments of the invention will become apparent from the following description. Embodiment (s) of the invention will be explained in more detail with reference to the drawing, without being limited thereto. Showing:

1 : Device for thermal hot stamping of products, preferably of food.

About a conveyor belt 8th be single row or in several rows products 7 to the device 1 promoted to hot stamping. In 1 For example, rolls are transported, which are to be provided on the surface with a thermal embossing motif.

The direction of the conveyor belt 8th is in 1 symbolized by an arrow. The movement of the conveyor belt 8th is with one movement system 2 synchronized. The movement system 2 At the bottom of this version there are two heating punch units 3 , The movement system 2 is designed in this embodiment as a gantry axis, wherein at least two synchronized motors 2.1 and 2.2 , the two heating stamp units 3 concerning the product 7 position. This allows the two Heizstempeleinheiten 3 be moved both in the height and to the left and right in the image plane. The directions of movement of the movement system 2 are in 1 symbolized by the two double arrows. Special functions of the drive control and the (frequency) inverter are the two motors 2.1 and 2.2 operated synchronously. This has the consequence that the gantry drive behaves as if it had only one feed motor.

The movement and positioning of the two heating punch units therefore becomes the gantry axis 3 to the product 7 on the conveyor belt 8th controlled. The heating stamp unit 3 includes at least one heating element 4 which, with regard to the heat capacity and thermal conductivity of the materials used, specifically to the corresponding product 7 is tuned to ensure consistent branding results. Furthermore, in each heating stamp unit 3 a hot stamp 6 recorded, which carries the motif to be embossed, which is to be embossed on the product surface. The hot stamp 6 is of a spring-loaded scraper element 5 surround. Will the hot stamp 6 pressed into the product surface, at the same time the spring element of the scraper 5 strained and when removing the hot stamping stamp 6 from the product 7 is an adhesion of the product 7 on the hot stamp 6 prevented.

LIST OF REFERENCE NUMBERS

1

Device for hot stamping

2

movement system

2.1

first engine

2.2

second engine

3

Heizstempeleinheit

4

heating element

5

stripping element

6

Heat stamps

7

product

8th

conveyor belt

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely 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.

Cited patent literature

• DE 102004014373 B4 [0003]
• DE 1161568 B [0004]

Claims (7)

Contraption ( 1 ) for the thermal hot stamping of products ( 7 ), preferably of food, at least consisting of: - a movement system ( 2 ), which at least one heating stamp unit ( 3 ), whereby via the movement system ( 2 ) which has a heating stamp unit ( 3 ) is positionable in at least two dimensions, - wherein the at least one heating stamp unit ( 3 ) at least one thermally adjustable heating element ( 4 ) and at least one hot stamp ( 6 ), which is a motif for hot stamping the product ( 7 ), and - at least one stripping element ( 5 ), which involves separating hot-stamped product ( 7 ) and hot stamping ( 6 ) and - at least one to the movement system ( 2 ) synchronously movable conveyor belt ( 8th ), which at least one product to the device ( 1 ) emotional. Contraption ( 1 ) according to claim 1, characterized in that the movement system ( 2 ) is designed as a gantry axis, wherein at least two synchronized motors ( 2.1 . 2.2 ) the at least one heating stamp unit ( 3 ) concerning the product ( 7 ). Contraption ( 1 ) according to claim 1 or 2, characterized in that the heating stamp unit ( 3 ) has a layer structure. Contraption ( 1 ) according to one of claims 1 to 3, characterized in that the hot stamp ( 6 ) has a coating which prevents adhesion of the product ( 7 ) to the hot stamp ( 6 ) prevented during the hot stamping process. Contraption ( 1 ) according to one of claims 1 to 4, characterized in that the conveyor belt ( 8th ) at least one positioning means for the correct positioning of the product ( 7 ) to the hot stamp ( 6 ) having. Contraption ( 1 ) according to one of claims 1 to 5, characterized in that the stripping element ( 5 ) is designed as a spring-loaded annular member which the hot stamp ( 6 ) at least partially surrounds. Contraption ( 1 ) according to claim 6, characterized in that the stripping element ( 5 ) at least one cleaning device for the hot stamp ( 6 ) having.

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