WO2013010288A1

WO2013010288A1 - Device and process for the production of a thermoset half-honeycomb strip and of a thermoset honeycomb structure

Info

Publication number: WO2013010288A1
Application number: PCT/CH2012/000174
Authority: WO
Inventors: Georges Müller; Bernhard Brinkhaus
Original assignee: The Swisscore Ag
Priority date: 2011-07-21
Filing date: 2012-07-23
Publication date: 2013-01-24

Abstract

Device (32) for the production of a thermoset, half-honeycomb strip (2e, 2f) made of a strip material (2), where the strip material (2) essentially consists of a fibre material, in particular of a paper web, where the fibre material has been preimpregnated with a binder which crosslinks to give a thermoset, comprising a first and a second impression wheel (4a, 4b) each having a contact area (4v) which runs in circumferential direction, with impression teeth (4c) arranged in circumferential direction with intervening distances and with depressions (4d) arranged therebetween, where the first and the second impression wheel (4a, 4b) have been designed appropriately for one another and have been arranged so as to intermesh with one another so as to produce, between the first and the second impression wheel (4a, 4b), a pressure site (4p) which takes the form of a line or area and which, during the rotation of the impression wheels (4a, 4b) progresses along the contact area (4v) in order to create a rolling pressure site (4p) that moves along the strip material (2), and also comprising a controllable pressure-generation device (4m) connected to the first and second impression wheel (4a, 4b) in order to generate a controllable pressure between the impression wheels (4a, 4b), and also comprising in each case a drive device (4h, 4i) to drive the first and the second impression wheel (4a, 4b), and also comprising a heating device (4j) for at least one of the impression wheels (4a, 4b), and also comprising a regulating device (30) connected at least to the drive devices (4h, 4i) and to the pressure-generation device (4m) in a manner permitting signal transmission, in order to provide mirror-image rotation of the impression wheels (4a, 4b) in a direction of conveying (F), and in order to generate a controllable pressure by way of the pressure-generation device (4m) and the drive devices (4h, 4i) at the pressure site (4p).

Description

DEVICE AND METHOD FOR THE PRODUCTION OF A DUROPLASTIC SEMI-CROPPED STRIP AND A DUROPLASTIC WAVE STRUCTURE

description

The invention relates to a device for producing a thermoset,

The invention further relates to a machine for producing a thermosetting honeycomb structure according to the preamble of claim 8. The invention further relates to a method for producing a thermosetting, semi-honeycomb strip according to the preamble of claim 14 and a method for Production of a thermosetting honeycomb structure according to the preamble of claim 16.

State of the art

It is known to produce honeycomb core materials or honeycomb structures from thermoset composite materials. Such honeycomb structures are used, for example, in the manufacture of structural elements such as doors, floors, side walls or ceiling walls. Usually, the honeycomb core material is connected on one side or on both sides with a cover layer so as to be a plate-shaped

Construction element to form. The honeycombs are designed as hexagonal honeycombs, which are also referred to as honeycomb honeycombs.

The document DE 3520046 AI discloses a manufacturing method of treated with phenolic resin honeycomb structures of paper webs glued together. In this case, paper webs are provided with adhesive strips and pressed together in a first process step. In a subsequent method step, the paper webs glued together are pulled apart to form honeycomb structures. In one

Subsequent step, the honeycomb structure is repeatedly dipped into a phenolic resin solvent mixture for fixing and then dried in an oven or cured so as to form a thermosetting honeycomb structure. This manufacturing method has the disadvantage that it is very expensive and correspondingly expensive. Presentation of the invention

The object of the invention is to economically advantageous thermosetting honeycomb structures and precursors for thermosetting honeycomb structures to form, which are particularly inexpensive to produce, have increased stability, and preferably allow the production of more advantageous lightweight walls.

This object is achieved with a device for producing a thermosetting, semi-honeycomb-shaped strip comprising the features of claim 1. The dependent claims 2 to 7 relate to further advantageous devices.

The object is achieved in particular with a device for producing a

thermoset, semi-honeycomb strip of a strip material, wherein the

Strip material consists essentially of a fiber material, in particular of a paper web, which is pre-impregnated with a thermoset-crosslinking binder comprising a first and a second embossing wheel each having a circumferentially extending contact surface with circumferentially spaced embossing teeth and recesses arranged therebetween the first and the second embossing wheel are mutually adapted and arranged mutually interlocking, that between the first and the second embossing wheel, a line or area pressure point arises, which moves along the contact surface during rotation of the embossing wheels to one along the Strip material moving, rolling pressure point to produce, and comprising a controllable pressure generating device, which is connected to the first and second embossing wheel, between the embossing wheels a controllable pressure z u as well as each comprising a drive device for driving the first and the second embossing wheel, and comprising a heating device for at least one of the embossing wheels, and comprising a control device, which at least with the

Drive devices and the pressure generating device signal transmitting is connected to rotate the embossing wheels in the same direction in a conveying direction and about the Pressure generating device and the drive devices at the pressure point to generate a controllable pressure.

The object is further achieved with a machine for producing a thermosetting honeycomb structure having the features of claim 8. The dependent claims 9 to 13 relate to further advantageous machines.

The object is further achieved in particular with a machine for producing a thermoset honeycomb structure from a plurality of thermoset, semi-honeycomb strips, comprising a feeder device for semi-honeycomb strips, comprising a positioning device, to a supplied semi-honeycomb strip

Positioning joints with respect to a stop edge of a honeycomb structure, and comprising a connecting device for connecting the supplied semi-honeycomb strip at joints with the honeycomb structure.

The object is further achieved with a method for producing a thermosetting, semi-honeycomb-shaped strip comprising the features of claim 14. The dependent claim 15 relates to a further, advantageous method. The object is further achieved in particular with a method for producing a thermosetting, semi-honeycomb-shaped strip from a strip material, wherein the

Strip material consisting essentially of a fibrous material, in particular a paper web, which is pre-impregnated with a thermoset-crosslinking binder by heating the strip material, and having first and second embossing wheels each having a circumferentially extending contact surface circumferentially spaced Prägezähnen and interposed depressions of a respective drive device are driven in opposite directions in a conveying direction, wherein at least one of the embossing wheels is heated, wherein the first and the second embossing wheel configured such mutually adapted and mutually interlocking arranged that on a between the first and the strip material running along the second stamping wheel generates a line-shaped or area-shaped pressure point, which moves continuously along the strip material conveyed in the conveying direction, wherein the first and the second stamping strip are in the conveying direction second embossing wheel are pressed against each other with a controllable pressure force against each other, and wherein the

Drive devices torque on the first embossing wheel and a torque on the effecting the second embossing wheel, wherein at least one of the torques is controllable, such that a controllable pressure is generated by the sum of pressure force and torques at the pressure point, in particular in a range between 10 bar and 300 bar .. The object is further achieved with a A process for producing a thermosetting honeycomb structure comprising the features of claim 16.

The object is achieved in particular with a method for producing a

thermosetting honeycomb structure of a strip material, wherein the strip material consists essentially of a fiber material, in particular of a paper web, which is pre-impregnated with a thermoset-crosslinking binder by the

Strip material heated and exposed to a compressive force and thereby to a

duroplastic, semi-honeycomb-shaped strip is formed, wherein the strip material is exposed in sections no compressive force, thereby to produce joints where the binder is not or only partially crosslinked to thermoset, and wherein thermoset, semi-honeycomb strips are joined together at their junctions by each other adjacent joints heated and exposed to a compressive force.

In the device according to the invention and in the method according to the invention, a duroplastic, half-honeycomb strip is produced from a strip material. A half-honeycomb strip is understood to mean a strip which is shaped such that two juxtaposed and interconnected half-honeycomb strips can form a honeycomb strip or the basic element of a honeycomb structure. The strip material consists essentially of a fiber material, in particular a paper web, which is pre-impregnated with a thermoset-crosslinking binder, for example a phenolic resin. A paper web is understood to be a web of paper, the paper being a material in which fibers (a few mm to a few cm long), mostly of vegetable origin, are crosslinked. The fibers used are preferably cellulose, which is obtained, for example, from wood or waste paper. A fiber is a thin and flexible structure in relation to its length. A fibrous material is understood to mean a larger composite of fibers. The fibers may be natural fibers such as vegetable fibers, animal fibers or mineral fibers of geological origin. The fibers can

Chemical fibers such as fibers of natural polymers or fibers of synthetic polymers. Fibers may also be industrially produced inorganic fibers such as glass fibers, Carbon fibers, metal fibers or ceramic fibers. The fiber material may also consist of a mixture of different fibers. The fiber material may be formed, for example, as a woven fabric, fleece, braid or scrim, for example as a cotton fabric,

Cotton fleece, glass fabric or glass tile. In the following description and

In particular in the following exemplary embodiments, the use of paper as a fiber material is described because strip material in the form of paper webs for the

inventive method is particularly advantageous. However, the method according to the invention and the device according to the invention are generally suitable for fibrous material made of materials which have a binder which crosslinks to form a thermoset

are preimpregnable, and their mechanical properties by the applied pressure and the applied temperature, which are required to crosslink the binder to form a thermoset, obtained or substantially preserved.

The strip material is continuously conveyed while being heated and subjected to a pressure to cause a condensation reaction of the binder, whereby a rolling pressure exerts such a pressure on the continuously conveyed strip material that the binder is pressed into the strip material and that during the Polycondensation released condensation products such as water are pressed out of the strip material by the strip material is passed between two interlocking, heated, mutually rolling embossing wheels, so that the strip material is heated by the embossing wheels, subjected to pressure and at the same time to a thermoset, semi-honeycomb strip is formed. The temperature and pressure is required to cause the polycondensation, so that the binder of the strip material crosslinks to the thermoset. During polycondensation arise

Condensation products such as water. In particular, the pressure is also required to extrude these condensation products from the strip material in order to avoid, in particular, blistering in the strip material. The inventive method has the advantage that it is particularly possible to form strip material consisting of a pre-impregnated with a binder material sheet such as a paper web in a continuous process to a thermosetting, structured strip, wherein during the continuous process both the formation of the structured strip as the crosslinking of the binder to the thermoset also takes place. The strip material comprising the paper web is advantageously heated to a temperature between 120 ° C and 280 ° C, in particular also at a temperature between 120 ° C and 250 or 260 ° C, and pressed with a pressure between 10 bar and 300 bar to the To effect condensation reaction.

In an advantageous method, the two embossing wheels are designed such that they move in particular continuously in the direction of the strip material

Pressure point cause along which the pressure is exerted on the strip material, wherein the pressure point in the direction of the strip material in particular has a length between 1 mm and 10 mm. The pressure point moving continuously in the direction of progression ensures that the condensation reaction is triggered along the portion of the strip material which is exposed to this pressure point.

In an advantageous method, such a pressure is generated by the rolling movement on the strip material, that the pressure in a central region of the strip material is higher than at the edge of the strip material, in particular to laterally press condensation products out of the strip material and convey away.

In an advantageous method, the surface of the strip material is structured such that the half-honeycomb strip has a structured surface, the structured surface in particular comprising a multiplicity of linearly extending recesses. Such a surface structure may, for example, the mechanical strength of

thermoset, semi-honeycomb strip increase.

In a further advantageous method, the strip material is preheated to a temperature between 50 ° C and 120 ° C before being fed into the embossing wheels.

In a further advantageous method, the strip material in its

Course generated mutually spaced contact sections by the

Strip material along the contact portion of such a low temperature and / or pressure is exposed, that the condensation reaction is not or only partially effected, so that the half-honeycomb-shaped strip in the direction of extension mutually spaced

Having contact sections. This is advantageously effected by the embossing wheels having depressions on the surface thereof, so that the rolling embossing wheel does not bear against the stiffening material along this depression, so that the strip material runs along the latter Well is not exposed to the pressure and / or the temperature, which triggers the condensation reaction.

In a further advantageous method, the pressure applied to the strip material is controlled by driving each embossing wheel individually and controlling the torque of each embossing wheel individually.

In a further advantageous method, the two embossing wheels are pressed against each other with a controllable linear force, wherein on each embossing wheel a controllable torque is effected, and wherein the linear force and the torques are controlled such that a predetermined pressure results between the two embossing wheels, the acts on the strip material.

In a further advantageous method, a wavy, half-honeycomb-shaped strip without kinks is formed by the rolling movement.

In another advantageous method, the speed of the

Condensation reaction by a regulation of pressure, temperature and the

Conveying speed of the strip material influenced, preferably such that the semi-honeycomb-shaped strip has passed between 0 seconds and 10 seconds after leaving the embossing wheels in the thermoset final state.

In a further advantageous method, the strip material comprises at least two superimposed partial strips, a first partial strip and a second partial strip, wherein the first partial strip consists of a paper web which leads to one

Duroplast crosslinking binder is pre-impregnated, and wherein the second sub-strip consists of a fiber material, in particular a paper web, which is pre-impregnated with a thermoset-crosslinking binder. The second substrip could also comprise a fabric or consist of a fabric which is pre-impregnated with a thermoset-crosslinking binder.

In a subsequent method step for the production of the thermosetting honeycomb structure, at least two structured strips, preferably half-honeycomb strips, are mutually juxtaposed to form a honeycomb and connected to each other, in particular via a thermosetting compound or by gluing, so that a basic element of a honeycomb structure is formed. More structured stripes, preferably semi-honeycomb strips are connected to this honeycomb structure, in particular via a thermosetting compound or by gluing, so that the

Honeycomb structure continues to grow. In a further, particularly advantageous process, semi-honeycomb-shaped strips are used in which the condensation reaction initially or only partially takes place along their contact sections. In this case, two half-honeycomb strips are brought together to form a honeycomb that the two half-honeycomb strips are arranged adjacent to each other at their contact portions, and that in each case two mutually adjacent contact portions are heated together and exposed to such a pressure that to the mutually adjacent

Contact sections a polycondensation is effected in order to firmly connect the two structured strips at the mutually adjacent contact portions over the formed thermoset each other. The mutually adjacent contact portions are particularly advantageously pressed against each other with a heatable pressing device, wherein the pressing device particularly advantageously has a surface structure, in particular a linear or lattice-shaped surface structure, which rests against each other during mutual connection to the contact portions and generates an embossing at the contact portion. This causes a particularly advantageous mutual connection and structuring of the contact portions and also advantageously increased mechanical stability of the contact portion and the honeycomb produced.

The manufacturing apparatus for producing a thermoset, semi-honeycomb

Strip of strip material comprises two intermeshing, heated, mutually rolling embossing wheels between which the strip material passes, so that the strip material is heated by the embossing wheels, subjected to pressure and at the same time formed into a semi-honeycomb strip. The embossing wheels turn continuously. The strip material is advantageously also preheated before the embossing wheels. In a particularly advantageous embodiment, the pressure and the temperature and the rotational speed of the embossing wheels are monitored by sensors and controlled by actuators, so that the crosslinking of the binder to the thermoset and the formation of the thermosetting, semi-honeycomb-shaped strip can be precisely monitored and influenced. The manufacturing device for producing the honeycomb structure is in a preferred

Design designed in a manner similar to a loom. A fabric made with a weaving machine has warp threads and weft threads, wherein the

Weft threads are held together by the warp threads. In webmaschinentechnischer terminology corresponds to be entered structured strip, in particular the

semi-honeycomb or honeycomb structured stripes, a weft thread. The function of the warp threads is taken over in the manufacturing device or in the produced honeycomb structure by the firm connection of the respective registered structured strip with the honeycomb structure, wherein this compound can be configured as a thermosetting compound or an adhesive bond. Due to the relatively great similarity between the manufacturing device and a weaving machine, such as an air or rapier weaving machine, the invention Herstell Ikings device

or the inventive production process a variety of

Properties on how they were previously known only in weaving machines. Similar to weaving machines, the production method according to the invention allows a multiplicity of possible, differently structured stripes to be entered, wherein the

For example, structured stripes could differ in structure, weight, width B, color, or material. In addition to structured stripes can also a variety of others

Materials or structures are registered, for example, a channel element having a channel. The structure of the honeycomb structure according to the invention is preferably formed from strip-shaped material containing cellulose or paper. If necessary, however, it is possible to incorporate additional materials into the honeycomb structure. As a first approximation, it can be assumed that such materials can be connected to the stop edge of the honeycomb structure, which coincides with the

Firmly secure the stop edge of the honeycomb structure, e.g. also by gluing.

The manufacturing device comprises at least one feeding device, which can supply a structured strip of the stop device. The stop device preferably comprises an entry channel into which the structured strip can be inserted and then abutted against a stop edge of a honeycomb structure. With the

Manufacturing device can be produced a variety of possible honeycomb structures, since the manufacturing device has an exceptionally high flexibility. The device for producing a thermosetting, semi-honeycomb-shaped strip from a strip material, wherein the strip material consists essentially of a fiber material which is pre-impregnated with a thermoset-crosslinking binder comprises in an advantageous embodiment, a first and a second embossing wheel each having one in the circumferential direction extending contact surface with spaced apart circumferentially arranged embossing teeth and recesses arranged therebetween, wherein the first and the second embossing wheel configured so mutually adapted and mutually interlocking, that between the first and the second embossing wheel a linear or planar pressure point arises, which during moving the embossing wheels along the contact surface to produce a rolling pressure point moving along the strip material, and includes a controllable one

Pressure generating device, which is connected to the first and second embossing wheels to generate a controllable pressure between the embossing wheels, and each comprises a drive device for driving the first and the second embossing wheel, and comprises a heating device for at least one of the embossing wheels, and comprises a control device which is signal-transmitting connected at least to the driving devices and the pressure generating device, to rotate the embossing wheels counter to in a conveying direction and to the pressure generating device and the driving devices on the

Pressure point to generate a controllable pressure.

The honeycomb structure according to the invention has the advantage that it consists of a multiplicity of structured strips which are mutually connected to one another via a thermosetting connection. Therefore, the honeycomb structure has an advantageous mechanical stability, especially at higher temperatures. In addition, the honeycomb structure also has an advantageous thermal stability, since the thermoset, in contrast to a thermoplastic, does not become plastic at higher temperatures and does not melt. Thermosets in the final cured state advantageously consist of closely chemically crosslinked macromolecules. They are insoluble, no longer meltable and solid until decomposition. The honeycomb structure according to the invention has the advantage that these are preferably

is insoluble in water. The erfmdungsgemässe honeycomb structure is therefore

insensitive to moisture and can therefore be used in a variety of applications. The inventive method has the advantage that the honeycomb structure can be produced inexpensively. In addition, the honeycomb structure in a variety of possible shapes and widths can be produced. The honeycombs can be made in a variety of possible geometric shapes. In a further advantageous method, linear or rectilinear honeycomb strips are produced in a first partial method step, and in a second partial method step, the linearly extending honeycomb strips are joined together, for example by gluing, in such a way that a flat honeycomb structure is formed. This method makes it possible to produce the individual honeycomb strips in a variety of possible geometric shapes, which is why the honeycomb structures can be produced in a variety of possible structures. The honeycomb strips or the structured strips can be produced in a wide variety of widths, wherein this width determines the height of the honeycomb structure, which is why honeycomb structures of different, constant height can be produced in a very simple manner. It is also possible with honeycomb stripes or textured stripes

variable width, which makes it possible to produce a honeycomb structure with variable height.

The method according to the invention makes it possible, starting from a strip material or starting from a strip-shaped material, to produce honeycomb structures or honeycomb strips. Cellulose is advantageously used as the strip material, the strip material being provided with a binder which binds to a thermosetting resin, preimpregnated or coated, or the strip material being impregnated beforehand with a binder crosslinking to a Duropalst, before structured strips are produced from the strip material. The strip material can also consist of another material, for example a plastic.

It may be advantageous to provide the strip material and / or the structured strip and / or the honeycomb structure with a silicate, by e.g. immersed in a silicate or sprayed with silicate, resulting in the production of refractory

or flame-retardant honeycomb strip or strip material and therefore also allows the production of honeycomb structures having such properties.

In a further advantageous embodiment, the honeycomb strips or the structured strips can also be produced running in three dimensions, wherein a honeycomb structure comprising a multiplicity of such honeycomb strips or structured strips likewise has one has three-dimensional course. The inventive method thus makes it possible to produce honeycomb structures as required in a variety of possible three-dimensional structure running. The method and the device for producing thermoset, semi-honeycomb strips or thermoset honeycomb structures makes it possible

Honeycomb structures very inexpensive to manufacture, and also allows the

Produce honeycomb structures in a variety of shapes, widths and thicknesses, as well as a variety of possible honeycomb geometries. The honeycomb structures according to the invention can serve as core material. The inventive honeycomb structures can also be provided on both sides with a cover plate, in particular lightweight walls with a

Making sandwich structure, wherein the lightweight walls consist of a core with honeycomb structure and arranged on one or both sides of the honeycomb cover plates. Thermosets consist in the final cured state of closely chemically crosslinked

Macromolecules. They are insoluble, no longer meltable and solid until decomposition. From low molecular weight starting materials, called monomers, initially uncrosslinked or only slightly crosslinked, still plastically moldable and also still relatively low molecular weight intermediates / precursors are prepared, which - referred to as resins or herein as a binder - for the actual crosslinking to the thermoset. They contain for this purpose two or more functional groups capable of cross-linking. Spatial crosslinking takes place in the present process in the presence of heat or radiation (UV, IR radiation). Occurs during crosslinking, a splitting off of volatile substances, it is called

Condensation resins, such as. B. in the phenolic resins. Resin compounds in which by

Condensation reactions water or water vapor in the usual

Processing temperatures is released, are also referred to as high pressure resins. If the strip material is pre-impregnated with such a high-pressure resin, the pressure exerted by the embossing wheels on the strip material is particularly important for blistering or even rupturing of the membrane during the course of the condensation reaction

Strip material due to the resulting in strip material water vapor or the resulting water vapor pressure to avoid. In the present method, in one possible embodiment, a phenolic resin is used as the binder, with binders generally being suitable which crosslink to give a thermoset. The invention will be explained below with reference to exemplary embodiments in detail.

Brief description of the drawings

The drawings used to explain the embodiments show:

Fig. 1 is a schematic perspective view of a manufacturing device;

Fig. La is a schematic perspective view of another manufacturing device;

Fig. 2 is a perspective view of a heating device;

Fig. 3 is a perspective view of a forming device;

4 is a perspective view of a connecting device;

5 shows an embodiment of a connecting device;

5a, 5b show several embodiments of a first stamping wheel;

6a, 6c exemplary embodiments of a structured strip;

Fig. 6b shows an example of a structured strip;

Fig. 7, 7a two embodiments of a honeycomb strip;

8a, 8b, 8c, 8d, 8f differently configured structured strips;

9a, 9b, 9c, 9d, differently configured honeycomb strips;

10 is a schematic side view of a manufacturing device;

10a shows schematically a side view of a further production device;

10b is a detail view of the pressing device shown in Figure 10a.

10c shows a further embodiment of a forming and feeding device;

An embodiment of a guide device with stop;

FIG. 10e shows a detailed view of the pressing device shown in FIG.

FIGS. 10a, 10g, 10h, 10e show various process states during the joining of a structured strip to a honeycomb structure;

10k schematically a plan view of a further embodiment of a

Stop device;

101, 10m, 10η, 10ο different process states during the joining of a

textured strip with a honeycomb structure in a plan view of the

Stop device according to FIG. 10k;

Fig. 10p schematically shows a plan view of a stop device comprising a

Apparatus for assisting entry by means of a gaseous fluid;

Fig. 1 1 shows schematically a device for merging partial strips; Fig. 12 shows schematically a guide device for forming a honeycomb strip;

Fig. 13 is a side view of a three-dimensionally shaped honeycomb structure;

14 shows a further embodiment of a two-dimensionally shaped honeycomb structure;

Fig. 15 is a detail view of the connection of a honeycomb structure with a cover plate;

FIG. 16 shows a side view through a honeycomb structure provided with covering layers; FIG.

17 schematically shows a side view of a further production device;

Fig. 1 8 is a plan view of a cutting and holding device, in particular for the production of narrower strips;

19 shows a further embodiment of a production device;

21 shows a further embodiment of a production device;

FIG. 22 shows a further embodiment of a production device; FIG.

Fig. 23 schematically shows a plan view of a further embodiment of a

Fabrication;

Fig. 24 is a side view of a manufactured honeycomb structure;

Fig. 24a is a plan view of a manufactured honeycomb structure;

Fig. 25 is a side view of a strip;

Fig. 25a is a plan view of another manufactured honeycomb structure;

Fig. 25b is a front view of the honeycomb structure shown in Fig. 25a;

FIG. 26 is a side view of a first stamping wheel with a ferromagnetic ring gear; FIG. Fig. 26a is a perspective view of the embossing wheel shown in Fig. 26;

FIG. 26b shows a detailed view of the meshing of the embossing teeth of the first and second embossing wheels; FIG.

Fig. 26c is a section along the line C-C of the embossing wheel shown in Fig. 26;

Fig. 26d is a side view of another embodiment of an embossing tooth;

26e is a partial view of a section through the two embossing wheels with strips arranged therebetween;

Fig. 26f is a plan view of the semi-honeycomb strip with a pressure point;

FIG. 26g is a partial view of a section through a stamping wheel; FIG.

FIG. 26h is a partial view of a plan view of the surface of a stamping wheel; FIG.

FIG. 26i is a partial view of a section through a stamping wheel; FIG.

FIG. 26k shows a half-honeycomb strip with a partially structured surface; FIG.

Fig. 261 is a section through a semi-honeycomb strip with structured

Surface;

Fig. 26m schematically shows the forces and moments occurring at the embossing wheels; FIG. 26n shows a side view of a further exemplary embodiment of an embossing tooth; FIG.

Fig. 27 is a schematic side view of two interdigitated embossing wheels;

Fig. 28 shows a strip of predetermined shape with protruding tabs;

Fig. 28a is a plan view of the arranged in a honeycomb strip according to

Figure 28;

FIG. 29 is a schematic plan view of another manufacturing device; FIG.

Fig. 29a is a side view of a sandwich panel during its manufacture;

Fig. 29b is a schematic plan view of another manufacturing device;

Fig. 29c is a side view of another sandwich panel during its manufacture; Fig. 29d is a plan view of another sandwich panel;

29e is a section along the line D-D of the sandwich plate according to FIG. 29d;

30 schematically shows a machine for producing a thermosetting honeycomb structure.

Basically, the same parts are given the same reference numerals in the drawings.

Ways to carry out the invention

Fig. 1 shows schematically and three-dimensionally a device 1 for continuous

Production of a Honeycomb Structure 10. The honeycomb structure 10 lies on a in

In the conveying direction 9a moving conveyor belt 9, wherein in the conveying direction 9a rear end of the honeycomb structure 10 continuously honeycomb strips 13 are supplied and fixed at the end or at the stop edge with the honeycomb structure 10, e.g.

so that the attached honeycomb strip 13 becomes part of the honeycomb structure 10, and then another honeycomb strip 13 is attached to the honeycomb structure 10, e.g. can be glued. The illustrated manufacturing device 1 comprises two non-visible holding devices 20 with supply rolls on which a strip material 2, in particular with a pre-impregnated to a Duropalst binder paper strips or cellulose strips are stored. The strip material 2 preferably has a constant width B, wherein the width B is preferably in the range between 2 cm and 25 cm. The width B determines the height of the honeycomb structure 10, so depending on

desired height of the honeycomb structure 10, a correspondingly wide strip material 2 is used for producing the honeycomb strip 13. The strip material 2 is preimpregnated with a binder crosslinking to a Duropalst, for example by impregnation or coating. The strip material 2 consists essentially preferably of cellulose, in particular paper or waste paper. The polymer material used is a duroplastic. The thermosets include, in particular, the aminoplasts and the phenoplasts, which are both connected to one another via methylene bridges (-CH ₂ -) or methylene ether bridges, but also synthetic resins such as melamine resin, phenolic resin or a melamine resin-phenolic resin derivative, epoxy resins, crosslinked polyacrylates and other crosslinked polymers ,

The embodiment shown in Figure 1 of a device 1 used to produce the honeycomb structure 10 strip material 2,2a, 2b consisting of a resin coated or a thermoset coated paper strips or cellulose strips. The strip material 2 is stored on supply rolls, not shown. Following the supply rolls, a heating device 3 is arranged which heats the strip material 2, 2a, 2b withdrawn from the supply rolls before the thus heated strip material 2c, 2d enters the forming device 4, 5, which consists of the previously unstructured strips 2c, 2d by forming structured stripes 2e, 2f generated. Which is after this

Processing step resulting structured stripes 2e, 2f become one

Connecting device 6 is supplied, in which the two strips 2e, 2f with respect to their course direction so mutually positioned and pressed together, that opposite surfaces 2h, 2i, also referred to as contact sections, touching each other. A chemical reaction of the binder has the consequence that the two contact sections 2h, 2i of the two strips 2e, 2f form a thermosetting compound which, after cooling, forms a compound which is no longer subject to thermal influences due to thermal influences. The two strips 2e, 2f thus connected together form a honeycomb structure 2g, which is cut by means of a cutting device 7 so that the honeycomb structure 2g becomes a honeycomb strip 13 after being cut. In the illustrated embodiment, the honeycomb strip 13 rests on a support 8, which is mounted pivotably about a center of rotation 8b in the direction of rotation 8a. It may prove advantageous to cool the honeycomb structure 2g or the honeycomb strip 13 located on the support 8 with the aid of a cooling device 11, for example with supplied air 1a, in order thereby to cool the heated honeycomb strip 13. The method of continuously producing a honeycomb structure 10 can thus be carried out by forming two strip materials 2a, 2b provided with a thermoset-crosslinking binder or a polymer material into structured half-honeycomb strips 2e, 2f such that the two structured half-honeycomb strips 2e, 2f be merged and connected together to form a honeycomb structure 2g, wherein between the two structured halbwabenformigen strips 2e, 2f a thermosetting compound is formed, that the honeycomb structure 2g is cut in a predetermined length to a honeycomb strip 13 that the honeycomb strip 13 for abutment against a Stop edge 10a of the honeycomb structure 10 has certain stop side 13b that the stop side of the honeycomb strip 13 and / or the stop edge 10a of the honeycomb structure 10 is provided with an adhesive, and that the abutment side 13b of the honeycomb strip 13 of the stop edge 10a of the honeycomb 10 is supplied and glued to this, so that the honeycomb strip 13 forms part of the honeycomb structure 10, wherein the last supplied and adhered honeycomb strip 13 forms a stop edge 10a, to which the next following honeycomb strip 13 is adhered.

FIG. 2 shows the heating device 3 shown in FIG. 1 in detail. This comprises six heatable, rotatable rollers 3a, 3b, 3c, 3d, 3e, 3f, wherein two oppositely arranged rollers each generate a mutual contact pressure to exert a contact force on the strip material 2. The supplied strip material 2 is in the

Heating device 3 on the one hand heated and on the other hand pressed under pressure, so that the resin or the binder is heated and the strip material 2 is preferably completely impregnated by the resin or the binder. In an advantageous embodiment, the surfaces of the rollers 3a to 3f coated with a dirt-repellent layer or provided with an anti-adhesive surface. The roller 3a to 3f could, for example, be made of chromium steel and have a surface coating of nanoparticles, which prevent adhesion of impurities such as the synthetic resin. Advantageously, a cleaning device 19 is also provided, which is shown only schematically in Figure 2, and which serves in particular the surfaces of the rollers 3a to 3f, which come into contact with the strip material 2, 2a, 2b, of

Clean impurities.

Figure 3 shows very schematically an embodiment of a forming device 4. The preheated and thus particularly flexible and easily deformable strip material 2c is fed to the forming device 4 and then has the predetermined by the shape of the forming device 4 structure. In the illustrated embodiment, two opposing embossing wheels 4a, 4b are used for this purpose, a first embossing wheel 4a, which engages in a second embossing wheel 4b. The embossing wheels 4a, 4b are at first glance similar to gears configured with spaced circumferentially spaced embossing teeth 4c, wherein in the circumferential direction between the embossing teeth 4c depressions 4d or base surfaces 4d are arranged with adjoining side surfaces 4g. In the illustrated embodiment, the second embossing wheel 4b is designed opposite to the first embossing wheel 4a, so that in each case an embossing tooth 4c of the first embossing wheel 4a engages in a recess 4d of the second embossing wheel 4b and vice versa, so that, as shown in Figure 3, the

Strip material 2c is formed in the shape determined by the geometry of the embossing teeth 4c, so that a structured strip 2e is formed, with a lower surface 2i, an upper surface 2h and side surfaces 2k. Since the structure of the structured strip 2e is determined by the geometry of the embossing wheels 4a, 4b, it is possible in a very simple manner to produce structured strips 2e of very different structure by using embossing wheels 4a, 4b with a differently shaped peripheral surface. For example, the circumferential surface of the first embossing wheel 4a may be changed by having the embossing tooth 4c have a wider or narrower surface in the circumferential direction, or the base 4d may have a circumferentially wider or narrower surface, or the embossing tooth 4c may have a different shape and is designed, for example, round, or that the side surface 4g are designed differently in terms of shape or with respect to depth. In addition, the overall diameter of the embossing wheel 4a can be selected as required, with the result that structured strips 2e can be produced in a wide variety of shapes by the most diverse possible arrangements and design possibilities of the embossing teeth 4c, as shown by way of example in FIGS. 8a to 8f is. The detailed design of the embossing teeth 4c is shown only schematically in FIG. The embossing teeth 4c have rounded teeth, as shown e.g. in the figure 5a is shown in detail. The forming device 5 shown in FIG. 1 is preferably configured identically to the forming device 4 shown in FIGS. 1 and 3.

Figures 9a to 9d show embodiments of differently designed

Honeycomb strips 13, which are each made of two merged and interconnected structured half-honeycomb strip 2e exist, all semi-honeycomb strips 2e have round transitional areas 2m. FIG. 9a shows a large honeycomb structure. FIG. 9b shows a honeycomb structure which has the same shape as the honeycomb structure shown in FIG. 9a, wherein the honeycomb structure according to FIG. 9b is substantially smaller in dimension. FIG. 9c shows a further honeycomb structure 13 which, however, has a significantly greater length in the course direction compared to the embodiment according to FIG. 9b, which can be achieved by designing the embossing tooth 4c substantially longer in the circumferential direction than the embossing tooth used to produce the structure according to FIG. 9b 4c. FIG. 9d shows a further exemplary embodiment of a structured strip 2e which has a semicircular course. This structure can also be produced by a correspondingly shaped surface profile of the first and second embossing wheels 4a, 4b. By means of a corresponding configuration of the circumferential surface of the first and second embossing wheels 4a, 4b, structured strips 2e can thus be produced in a multiplicity of possible structures and geometric dimensions.

FIG. 4 shows a connection device 6 in detail. The two structured

half-honeycomb strips 2e, 2f are supplied to the connecting device 6. The task of the connecting device 6 is to position the two structured strips 2e, 2f in their direction of progression and to mutually connect or weld each other. The mutual positioning in the direction of advance is preferably as shown, such that a lower portion 2i of the first structured strip 2e is brought into mutual contact with an upper portion 2h of the second structured strip 2f to thereby effect a mutual connection of the two strips 2e, 2f , And to produce such a honeycomb structure 2g or a honeycomb strip 13. The connecting device 6 has a first and a second guide wheel 6a, 6b. The guide wheels 6a, 6b are designed as toothed wheels with teeth 6f, these teeth 6f forming a heatable pressing surface 6c on their front side, wherein between in

Circumferential adjacent stitching 6f a recess 6d is arranged with side walls 6e. The geometry of the pressing surfaces 6c, the depressions 6d and the side walls 6e is adapted according to the geometry of the structured strips 2e, 2f, so that the portion 2i of the first structured strip 2e and the portion 2h of the second structured strip 2f are preferably arranged opposite one another and thereby pressed against each other and thereby connected, so that the honeycomb structure 2g is formed. The connecting device 6 shown in Figure 4 has on the one hand the Advantageous that the structured half-honeycomb strips 2e, 2f can be positioned very accurately one another with the aid of the teeth 6f engaging in the strips 2e, 2f in the running direction of the strips 2e, 2f, and on the other hand has the advantage that the mutually contacting sections 2i, 2h of the two strips 2e, 2f are heated by the heating effected by the teeth 6f and are pressed against one another by the pressing force caused by the teeth 6f, so that a particularly advantageous connection is formed by the two strips 2e, 2f being joined to the common one Touch points after the successful polycondensation mutually firmly thermosetting are connected. In the following, this connection will also be referred to as a mutual "welding." In an advantageous embodiment, again a cleaning device 19, shown only schematically, is provided around the surfaces of the first and second guide wheels 6a, 6b

Clean contaminants.

Figure 5 shows the first guide wheel 6a with a plurality of circumferentially spaced teeth 6c, wherein the teeth 6c are preferably rounded, which is not shown in detail.

FIG. 6a shows by way of example a section of the first structured half-honeycomb strip 2e which has been produced with the forming device 4 shown in FIG. 26b, in detail. The first structured strip 2e has upper portions 2h, lower portions 2i and

Side sections 2k on. In addition, the strip 2e has rounded transition regions 2m. FIG. 7 shows a section of a honeycomb structure 2g or a section of a honeycomb strip 13 in detail. The first structured half-honeycomb strip 2e and the second structured half-honeycomb strip 2f are over the thermoset

Touch points 2s, hereinafter also referred to as "welding points", mutually firmly connected.

FIGS. 5a and 5b show exemplary embodiments of first embossing wheels 4a, which have embossing teeth 4c with a circumferentially round-shaped geometry, so that in particular at the transition points of embossing tooth 4c to side surface 4g and of

Side surface 4g to recess 4d a round or arcuate running

Transition results without kink. The arcuate transition has a radius of curvature, which may for example have a value in the range between 3 mm to 5 mm or 3 to 10 mm or 3 to 200 mm, depending on the overall diameter of the first stamping wheel 4a. The maximum value of the radius of curvature is open at the top and depends on the total diameter of the first stamping wheel 4a, in that a larger overall diameter also allows a larger radius of curvature. In the exemplary embodiment according to FIG. 5b, certain embossing teeth 4c are missing in the circumferential direction. The strip 2e shown in FIG. 8f could, for example, be formed with a shaping device 4, which comprises the first embossing wheel 4a shown in FIG. 5b and a second embossing wheel 4b, not shown, wherein the surface of the second embossing wheel 4b

Circumferentially opposite to the surface of the first embossing wheel 4a is configured to form the patterned strip 2e shown in Figure 8f. A forming device 4 comprising two intermeshing embossing wheels 4a, such as one of which is shown in FIG. 5a, has the advantage that structured half-honeycomb strips 2e can be formed on the basis of the rounded embossing teeth 4c, as shown in FIGS. 6a or 6c. These structured half-honeycomb strips 2e have no kink 2n in the transition region 2m, but instead have a curvature or an arcuate course in the transition region 2m, for example one

Curvature having a radius of curvature 2r, wherein the radius of curvature 2r, for example, may have a value between 3 mm to 5 mm or 3 to 10 mm or 3 to 200 mm.

FIG. 6a shows a perspective view of a structured strip 2e which has arcuate transition regions 2m, that is to say transition regions 2m without

Kinks 2n. FIG. 6c shows in a side view a further exemplary embodiment of a structured strip 2e with a wave-shaped transitional region 2k or an arc-shaped or curved one

Transitional areas 2m. The structured half-honeycomb strip 2e also has upper sections 2h, lower sections 2i and side surfaces 2k. The illustrated strip 2e also has inflection points 2q at which the one arcuate transition region 2m merges into the next arcuate transition region 2m. A rectilinear section could also be arranged between the two arcuate transition regions 2m, so that no unique inflection point 2q is formed between successive transition regions 2m. The strips 2e shown in FIGS. 6a and 6c thus have a curved or wavy course, that is to say a course without kinks.

For a better understanding of the disadvantage of a kink, FIG. 6b shows in a side view a partial section of a structured strip 2e with kinks 2n. Such structured Strips 2e with kinks 2n are advantageously not produced by the method according to the invention. Duroplastics have the disadvantage that they can be relatively hard and brittle, and therefore prone to impact, impact and bending. A disadvantage of the structured strip 2e shown in FIG. 6b is the fact that a movement or loading of the strip 2e in the direction 2o results in that the kinks 2n are heavily loaded since the successive sections of the strip 2e are also in the direction of movement 2p move each other, which has, for example, a weakening or breakage of the kinks 2n result. In contrast, the patterned strip 2e according to the invention shown in FIGS. 6a and 6c has an arcuate shape

Transition areas 2m the advantage that during movement or load of

Strip 2e in the direction 2o no clear load point forms, because the strip 2e at various points, similar to a spring is deformable. In the case of a structured strip 2e with wave-shaped or arc-shaped transitional regions 2m, as shown for example in FIGS. 6a and 6c, no kinks 2n arise in the transition region 2m and thus no weakenings or breaks. A structured strip 2e with arcuate transition regions 2m therefore has a substantially improved fracture

Long-term behavior. A sandwich plate comprising a honeycomb core with structured strips 2e, which are curved or curved as shown in FIGS. 6a, 6c, therefore also has an improved tensile load and an improved vibration load.

FIG. 7a shows a section of a honeycomb structure 2g or a section of a honeycomb strip 13 in detail, this being formed from structured strips 2e, 2f with arcuate transition areas 2m. The first structured strip 2e and the second structured strip 2f are mutually fixed or welded together via the thermoset contact points 2s.

FIG. 10 shows a detail of the production device 1 in a side view. The

produced honeycomb structure 10 rests on a support surface 9, wherein the support surface 9 is moved in the conveying direction 9a. The honeycomb structure 2g is during the

Manufacturing process in each case initially pushed onto the support 8, and thereby cooled in a preferred embodiment by means of a cooling device 1 1 by inflowing cooling air II a. As soon as the honeycomb structure 2g has reached the intended length, it is cut off with the cutting device 7 so that a honeycomb strip 13 or a structured strip 2e is formed. The honeycomb strip 13 has an abutment side 13b which is provided with the aid of an adhesive supply device 12, for example with an adhesive, wherein, if glued, in particular the surfaces coming into contact with the honeycomb structure 10 are supplied with adhesive. The edition 8 is in

Rotational direction 8a rotatably supported, so that the honeycomb strip 13a as shown rotated by 90 ° and then placed on the support surface 9. A pestle 17 then pushes the

Honeycomb strip 13a in the direction of displacement 9a to the stop edge 10a of the honeycomb structure 10 until the honeycomb strip 13a abuts with its stop side 13b on the stop edge 10a of the honeycomb structure 10 so that it is adhered to the stop edge 10a of the honeycomb structure 10 and the honeycomb strip 13 to a part of Honeycomb structure 10 becomes. This thus glued honeycomb strip 10b now forms a stop edge 10a for a

next following honeycomb strip 13a, so that through this ongoing process the

Honeycomb structure 10 in the direction of displacement 9a is getting longer and thus the honeycomb structure 10 is formed. Fig. 1a shows schematically and three-dimensionally another embodiment of a

Device 1 for the continuous production of a honeycomb structure 10. In contrast to the embodiment shown in Figure 1 uses that shown in Figure la

Manufacturing device 1 each only a structured half-honeycomb strip 2e, which is supplied in the conveying direction F, wherein the structured strip 2e with the aid of

Forming device 4 comprising a first and a second embossing wheel 4a, 4b is generated.

As soon as the completely required length of the strip 2e has been registered on the support 8, it is cut with the cutting device 7, and the structured strip 2e is subsequently struck against the stop edge 10a of the honeycomb structure 10. The forming device 4 is preceded by a supply roll with strip material 2, wherein the strip material 2 a

Warming device 3 passes through, and thereafter as unstructured strip 2c of

Forming device 4 is fed, after which the structured strip 2 e is formed.

The striking of the structured strip 2e to the stop edge 10a takes place in a possible embodiment as already described in FIG. 10 in that the structured strip 2e is fed to the support 8, after which the structured strip 2e is supplied with the support

Cutting device 7 is cut and provided with an adhesive, then the structured strip 2e is pivoted onto the support surface 9, and then the structured strip 2e, for example by means of a plunger 17 of the stop edge 10a is supplied, so that the structured strip 2e to the honeycomb structure 10 is glued, so that just glued structured strips 2e now forms a stop edge 1 Oa for a further supplied structured strip 2e.

A single structured half-honeycomb strip 2e, or a plurality of at least two mutually already connected structured semi-honeycomb strips 2e, also referred to herein as honeycomb strip 13, can be used in many different ways

Stop edge 10a of the honeycomb structure 10 are supplied. FIG. 10a schematically shows a structured strip 2e or a honeycomb strip 13 which is mounted on a strip

Support surface 9 rests and of a movable in the direction 17a ram 17 of the

Stop edge 10a is fed. Below the support surface 9, a pressing device 21 is arranged, which stamp 21 a, 21 b includes, in the vertical direction 21 c and in

horizontal direction 21 d are slidably mounted. FIG. 10b shows, in a top view, the striking of a structured strip 2e against the stop edge 10a with the aid of

Pressing device 21. For the time being, the structured strip 2e is fed to the stop edge 10a of the honeycomb structure 10. Thereafter, the punches 21a, 21b are raised in the vertical direction 21c, and then pressed against each other in the horizontal direction 21d, so that the structured strip 2e is pressed against the stop edge 10a. Thereafter, the punch 21 a, 21 b in the horizontal direction 21 d slightly moved back, and then moved in the vertical direction 21 c until they are arranged below the support surface 9. The structured strip 2e is then connected to the honeycomb structure 10, forms part of the honeycomb structure 10, and also forms the stop edge 10a for a next structured strip 2e to be attached. Instead of a structured strip 2e, a honeycomb strip 13 could also be struck against the stop edge 10a of the honeycomb structure 10 in the same way. The arrangement shown in FIG. 10b has the advantage that the pressing device 21 can exert such a force on the stop edge 10a and the structured strip 2e via the punches 21a, 21b that the structured strip 2e bonds well with the stop edge 10a. In a particularly advantageous embodiment, no adhesive is required for this connection, because the structured strip 2e has contact sections 2i, 2h, along which the condensation reaction of the binder was not or only partially effected, so that between the stop edge 10a and the structured strips 2e contacting them forms a thermosetting compound. To initiate the condensation reaction, the punches 21a, 21b are heatable and can be pressed against each other under pressure, for example at a temperature between 120 ° C and 280 ° C and at a pressure between 10 bar and 300 bar, around the stop edge 10a and the structured strip 2e at to heat the attacking body, to crosslink the binder to a thermoset, and to press condensation products from the strip 2e, so as to weld the strip 2e with the stop edge 10a via a thermosetting compound. The end face of the punches 21a, 21b, which faces the strip 2e and / or the stop edge 10a, have in a particularly advantageous embodiment a structured surface, for example the structure shown in FIGS. 26g, 26h or 26i. This causes, as shown in Figure 7, a structured or embossed welding point 2s 1, which has the advantage that the joint 2s of the two strips 2e, 2f holds together particularly well, and that the joint 2s due to the structure or the embossing better

mechanical properties, e.g. has an increased rigidity.

The production device 1 for honeycomb structures 10 shown in FIG. 1a comprises, in particular, a feed device 32, a stop device 34, a drive and control device 30, and a support surface 9. The feed device 32 comprises, in particular, a forming device 4, a heating device 3, and a

Cutting device 7. The abutment device 34 comprises all necessary means for attaching the structured strip 2e to the honeycomb structure 10 so that the structured strip 2e becomes part of the honeycomb structure 10. The resources required for the stop device 34 are shown in the following figures.

The control device 30 is of particular importance for the operation of the production device 1. In one possible embodiment, the control device 30 regulates the heat generated by the heating device 3 and the speed of the forming device 4. The speed of the forming device 4 is of particular importance, since this one hand, the entry speed of the structured strip 2e in the conveying direction F in the

Stop device 34 determined. In addition, the speed of the forming device 4 determines the withdrawal speed of the strip material 2 from the supply roll and the speed of the unstructured strip 2c. This speed also determines the residence time of the unstructured strip 2c in the heating device 3. In a further advantageous embodiment, the forming device 4 also has a heating device, which can be controlled via the control device 30. In a further advantageous embodiment, moreover, the contact force between the two embossing wheels 4a, 4b on the

Control device 30 can be controlled.

In the illustrated embodiment, the control device 30 is connected via an electrical line 31a with a speed sensor, not shown, to the Speed of the unstructured strip 2c to measure. An electric lead 31b is connected to the heater 3 to supply it with a target value for the heat energy to be delivered and / or to measure the temperature in the heater and / or the unstructured strip 2c. An electrical line 3c is connected to the forming device 4 in order to control the rotational speed of the embossing wheels 4a, 4b, and possibly to control the mutual contact pressure of the embossing wheels 4a, 4b and possibly to control a heat emitted by the embossing wheels 4a, 4b. An electrical line 3 ld controls a motor, not shown, which controls the rotational movement 8a of the support 8. An electric line 3 le controls a motor, not shown, which controls the displacement speed of the support surface 9 in the direction of movement 9a. An electrical lead 31f drives a cutting device 7 to sever the patterned strip 2e. An electrical line 31 g detects a signal from a sensor 24, which detects the position of the structured strip 2 e, and in particular detects the complete entry of the strip 2 e. An electrical lead 31h controls a possibly present cutting or punching device 23, which changes the strip material 2 by cutting or punching in its shape. The production device 1 may also comprise a plurality of further sensors and / or actuators, which are not shown in detail, and which in particular can be monitored and / or controlled by the control device 30. FIG. 10c discloses subcomponents of a particularly advantageous production apparatus 1. The supply apparatus 32, comprising the heating apparatus 3, the forming apparatus 4 and the cutting apparatus 7, is designed and arranged in such a way that the structured strip 2e is fed to the support surface 9 in such a way that it no longer acts like this has to be rotated in the figures 1 and la, but already has the required position for abutment against a stop edge 10a. The structured strip 2e is entered over the width of the support surface 9, wherein the strip 2e has an upright position, or wherein the strip 2e extends perpendicular to the support surface 9. In an advantageous embodiment, a guide device 26 is provided, which the

Freedom of movement of the structured strip 2e limited at least on one side, so that it is registered safely and preferably approximately rectilinearly over the support surface 9. In an advantageous embodiment, the guide device 26 also comprises a funnel-shaped widening entrance area 26a, 26b, for example, wherein only the footprint of the entrance areas 26b is shown. Figure 1 Od shows a further embodiment of a guide device 26 which is designed as a stop 27. The stop 27, on the side facing the structured strip 2e, preferably has such a structure that it corresponds to the course of the structured strip 2e, that is to say that it faces the structured strip 2e

Stop side 27h has subscripts 27a, elevations 27b and inclined points 27c, which correspond to the geometric shape of the structured strip 2e. In an advantageous embodiment, the stop side 27h also has holes 27d, through which a gaseous fluid can be discharged or sucked. In a further advantageous embodiment, the support surface 9 openings 9b, with only one

Opening 9b is shown, wherein preferably immediately before each low point 27a and immediately before each high point 27b, an opening 9b is arranged. In the

Opening 9b is preferably arranged a punch 21, which will be described in detail below.

In a further advantageous embodiment, the guide device 26 or the stop 27 is movably mounted at least in the direction of travel 27e of the guide device 26 or at least in the vertical direction 27b or at least in the direction of progression 27g of the support surface 9.

FIG. 1e shows a detail of a honeycomb 10 with stop edge 10a, a structured strip 2e being connected to this stop edge 10a. For this purpose, a punch 21 a is raised from below the support surface 9, so that the stop edge 10 a and the structured strip 2 e comes to rest between the high point 27 b of the stopper 27 and the punch 21 a, the punch 21 a causes a contact force in the direction of movement 21 c, and if required causes heating to cause a mutual connection of each of the high point 27b and the punch 21 a lying portions of the stop edge 10a and 2e structured strip. This abutment of the structured strip 2e to the stop edge 10a is explained in detail in FIGS. 11a to 10e in four successive method steps. In FIG. 10b, the punch 21a is located below the surface of the support surface 9. In FIG. 10g, the preferably heatable punch 21a is run up through the opening 9b and, in addition, the structured one is produced

Strips 2e registered. In FIG. 10h, the punch 21a is moved in the direction 21c and the strip 2e is welded to the stop edge 10a, in FIG. 10i the punch 21a is moved downwards again. FIGS. 10k to 10p show in a further exemplary embodiment a further possible method for striking a structured strip 2e against the stop edge 10a in detail. In this embodiment, the punch 21 a and the stop 27 are designed edged. A still plastically deformable, that is not completely polymerized strip 2e with originally roundish transitional regions 2m, as shown in FIG. 6a or 6c, can be deformed with the aid of the punches 21a, 21b and the stop 27

or pressed, that this strip 2e, as shown in Figure 10k, has an angular or substantially angular kink 2n, as shown in Figure 6b. The device according to the invention thus also makes it possible to produce angular honeycomb structures, or honeycomb structures, with kinks 2n. The exemplary embodiment illustrated in FIGS. 10k to 10p is essentially suitable for producing angular honeycomb structures as well as for producing wave-shaped honeycomb structures. For the production of wave-shaped honeycomb structures, however, the punches 21a, 21b and the abutment 27 would have to be designed as shown, for example, in FIG. 10e.

FIG. 10k shows a plan view of the elements required for striking. The stop 27 comprises holes 27d for a gaseous fluid. From the holes 27d, a gas can flow, or via the holes 27d gas can be sucked. The stop side 27h has subscripts 27a, elevations 27b and inclined points 27c, with respect to the subscripts 27a, a first set of punches 21a is arranged, and wherein with respect to the high points 27b, a second set of punches 21b is arranged. In addition, the honeycomb structure 10 with

Stop edge 10a and a registered structured strip 2e shown. FIG. 10k shows the arrangement of the punches 21a, 21b which can be seen from above, wherein it is not shown whether the punches 21a, 21b project beyond the bearing surface 9. Figures 101 to 10 o now show a possible stop method in detail. The punches 21 b project beyond the support surface 9 and are arranged directly behind the stop edge 10 a of the honeycomb structure 10. Between the stop edge 10a and the stop 27, a gap is formed, in which the structured strip 2e has been registered. In the subsequent process step illustrated in FIG. 10m, the two punches 21b are moved in the direction 21c towards the stop 27, so that the stop edge 10a of the honeycomb structure 10 and the structured strip 2e move along the length of the puncture 21b or along the length of the elevation 27b be pressed. Then, the stamp 21 b driven down and a gaseous fluid such as air blown out of the holes 27 d, so that the stop edge 10 a of the honeycomb structure 10 from the stop 27 away is pushed. FIG. 10 shows a subsequent method step in which the punches 21 a are raised and engage in the honeycomb structure 10. The entire stop 27 is displaced to the left such that the high points 27 b of the stop 27 come to rest against the punches 21 a. In addition, a structured strip 2e is inserted between the stop 27 and the stop edge 10a. As soon as this entry has taken place, the punches 21a are displaced in the direction 21c towards the stop 27, wherein the elevations 27b are arranged opposite the punches 21a in order to press the structured strip 2e along the section of the punches 21 against the stop edge 10a and so on To connect the structured strip 2e with the honeycomb structure 10. Thereafter, the punches 21c are moved downward and the stopper 27, as shown in Figure 101, in

Moving direction 27e back to the right, so that with the in Figure 101

shown state can be continued.

FIG. 101 shows the stop device 34 in a possible insertion position during which the structured strip 2e is introduced in the conveying direction F. FIG. 10p shows the stop device 34 in a further possible insertion position, during which the structured strip 2e is introduced in the conveying direction F. In this case, the punches 21a are in the upper position, so that the structured strip 2e between the punches 21a and the

Stop 27 is introduced, and, if necessary, by the punch 21 a and the stop 27 is guided. It may prove advantageous to provide the plunger 21a and / or the stop 27 with fluid-conducting channels 27h, 21f, which are arranged such that a gaseous fluid flowing out of these channels 27h, 21f acts on a force acting in the conveying direction F. effected on the structured strip 2e. The channels 27 h, 21 f extend within the stop 27 or within the punch 21 a, which is why the channels 27 a, 21 f are shown only hinted. The effluent gaseous fluid may also heat or cool the patterned strip 2e as required by appropriately selecting the temperature and / or the rate of discharge of the gaseous fluid.

FIG. 101 discloses a further possibility for mechanically supporting the entry of the structured strip 2e. For this purpose, a collection device 35 is used, which is designed such that it can detect the front part or the tip of the strip 2 e, and pull the strip 2 e in the insertion direction F through the open compartment, in the illustrated embodiment, from right to left, by the Strip 2e on the right side is detected and moved from the feeder 35 to the left through the open compartment is pulled. The collection device 35 is configured in the illustrated embodiment as a gripper 35a, which can detect the tip of the strip 2e. The gripper 35a is fixed to a rod 35b which is displaceable in the direction 35c, such that the gripper 35a is displaceable up to the entrance area of the opened compartment, ie in the illustrated embodiment to the right side of the stop device 34, so that the gripper 35a is the tip of the strip 2e, and can pull the strip 2e completely through the opened compartment by moving the gripper 35a in the loading direction 21. After this

2e, the gripper 35a releases the tip of the strip 2e so that the gripper 35a is ready to receive a subsequent strip 2e. In place of a gripper 35a, another device capable of holding the tip or front portion of the strip 2e may be used, for example, the device could create a vacuum that holds the strip 2e.

The strip material 2 could also consist of a plurality of stacked, pre-impregnated paper webs. Figure 1 1 shows schematically an embodiment of a device which two partial strips 2aa, 2ab of impregnated paper webs together to form a strip material 2a, from which anschießend with a forming device 4, not shown, a half-honeycomb strip 2e is formed. The strip material 2a can also be produced from a multiplicity of sub-strips 2aa, 2ab arranged one above the other in order to form in particular a thicker strip material 2a.

FIG. 12 schematically shows a plan view of a possible embodiment of a support 8 which, unlike the embodiment shown in FIGS. 1 and 10, does not run linearly, but instead has a curved guide device 14

Side guides 14a, 14b, so that the still flexible honeycomb structure 2g undergoes a curvature during insertion into the guide device 14. Which after the

Cutting with the cutting device 7 resulting honeycomb strip 13 thus has a curved course. Figure 13 shows a side view of a composite panel 21 comprising a honeycomb structure 10 formed from a plurality of the honeycomb strip 13 shown in Figure 12, wherein the

Honeycomb structure 10 is connected on both sides each with a lower cover plate 15 and an upper cover plate 16. If the honeycomb structure 2g fed into the guide device 14 is still relatively soft and deformable, honeycomb structures 2g and thus honeycomb strips 13 can also be used

be formed a variety of two- or three-dimensional progressions, the course of the honeycomb strip 13 is determined by the corresponding extending guide device 14. FIG. 14 shows a further exemplary embodiment of a honeycomb strip 13.

This can extend in a variety of forms in a two- or three-dimensional direction and can then be struck as shown in Figure 10 in each case to a stop edge 10a of the honeycomb structure 10. Of course, the pad 9 must be configured according to the course of the honeycomb structure 10. In an advantageous embodiment, the bottom cover plate 15 of the composite panel 21 to be produced is used as the base 9, as shown in FIG. It is thus possible honeycomb structures 10 and thus also

To produce composite panels 21 in a variety of two- or three-dimensional shape.

Figure 15 shows a detailed view of a section through a composite plate 21 with

Honeycomb strip 13. The honeycomb strip 13 shown in section is made as shown in Figure 7 from two strips 2e, 2f, which are mutually fixedly connected to each other via the mutual contact surfaces 2h, 2i. The honeycomb strip 13 is connected via a flowable connecting means 22, in particular an adhesive, fixed to the lower cover plate 15. In a particularly advantageous embodiment, not only the cover plate 15 facing front side of the honeycomb strip 13 is provided with adhesive 22, but there are lateral bead-shaped splices 22a, 22b formed, which in particular give the advantage that the honeycomb strip 13 with respect to acting in the direction 22c forces better is held. The laterally arranged splices 22a, 22b thus increase the

Strength of the composite plate 21, in particular acting in the direction 22c

Shear.

FIG. 16 shows a side view of a further exemplary embodiment of a composite panel 21 with honeycomb structure 10 and with lower cover panel 15 and upper cover panel 16. This honeycomb structure 10 is formed from a multiplicity of adjacently arranged honeycomb strips 13 with partially different widths, the width of the honeycomb strips 13 being selected such has been that the honeycomb structure 10 has a varying height profile. In an advantageous embodiment, the strip material 2 could for example have an increasing width B, so that with the manufacturing device 1 shown in Figures 1 and 5 on In a simple way, the section 21a of the composite panel 21 shown in FIG. 16 can be produced by making the produced honeycomb strips 13 increasingly wider.

FIG. 17 schematically shows a further exemplary embodiment of a production device 1 which, unlike the production device 1 shown in FIG. 10, can produce three honeycomb strips 13 at the same time by providing these three separate supports 8 and three separate upstream connecting devices 6 and three separate forming devices 4, 5 having. The produced honeycomb strips 13 are successively placed on the conveyor belt 9 as honeycomb strips 13a, where they are individually displaced with the aid of a ram 17 movable in the direction 17b to the stop edge 10a of the honeycomb structure 10 and adhesively bonded there to the honeycomb structure 10. The plunger 17 is connected via a rod 17a with a drive device. The manufacturing apparatus 1 is in a variety of

Possibilities ausgestaltbar, so in embodiments with only two or four or even more simultaneously produced honeycomb 13. Such a configured

Manufacturing device 1 allows a particularly fast and efficient production of the honeycomb structure 10.

Instead of the plunger 17 or in addition to the plunger 17 further devices may be helpful, which is a secure attachment and insertion of the honeycomb strip 13 in the

Allow honeycomb structure 10. As a possible embodiment of such

Device is shown in Figure 21, a pressing device 21, which stamp 21 a, 21b and 21 d comprises, which are designed such that they can engage via a movement in the direction 21c in the interior 21 of the honeycomb strip 13, at least two adjacently arranged honeycomb strip 13 to press against each other and thereby connect. Preferably, the pressing device 21 perpendicular to the view shown a plurality of juxtaposed punches 21 a, 2 lb, 21c, preferably so many that in each interior 21 of a honeycomb strip 13, a punch 21 a, 21 b, 21 c can engage. In an advantageous embodiment could also be dispensed with the plunger 17 by the pressing device 21 is also moved in such a way that the group of at least two interconnected honeycomb strips of the stop edge 10a and with the

Honeycomb structure 10 is connected.

For the manufacturing apparatus 1 shown in FIG. 17, as shown in FIG. 18, it may prove particularly advantageous to use a strip band 2 of three times the width 3B, which is drawn off in direction A and with the aid of two second ones Cutting devices 18 is cut so that subsequently three strips 2c of width B are available, which each have a heater 3 and the downstream

Forming 4.5 and the downstream connection devices 7 are supplied. The arrangement advantageously comprises a holding device 20 for a roll of strip material 2 of the total width 3B, and comprises a plurality of second

Cutters 18 for synchronously cutting strip material 2 to a width B for each of the downstream manufacturing devices 32 from the roll of strip material 2. For example, 10, 20, 30, or 40 second cutters 18 could be provided to simultaneously produce a corresponding number of strips 2c , Advantageously, a forming device 4, 5 would then be arranged downstream for each of the strips 2c in order to form all strips 2c parallel to thermoset, half-honeycomb strips 2e, 2f.

FIG. 19 shows a further exemplary embodiment of a production apparatus 1. This production apparatus 1 has two feeders 20, on which a strip material 2 stored on rolls is mounted. The strip material 2a, 2b is withdrawn from the roll and fed to the forming device 4 or the forming device 5 in order to produce structured strips 2e, 2f. The illustrated in Figure 19

Manufacturing apparatus 1 is suitable, for example, for the production of refractory or fire-resistant honeycomb structures 10. For this purpose, the strip material 2, 2a, 2b provided with a silicate by the strip material 2, 2a, 2b with a silicate, for example a

Two-component silica resin is impregnated. The strip material 2, 2a, 2b is, for example, a paper, for example cellulose. The strip material 2, 2a, 2b is either soaked with silicate before it is stored on the roll or the strip material 2 is provided with silicate after being pulled off the roll, for example by passing the strip materials 2a, 2b through a silicate liquid, before they are fed to the forming devices 4.5. The honeycomb structure 10 is otherwise produced as described with FIG. 1 by connecting the two structured strips 2e, 2f in a connecting device 6, after which a honeycomb strip 13 is produced, and this is glued to the honeycomb structure 10. The forming devices 4, 5 and the structured strips 2e, 2f are shown only schematically, which is why the rounded teeth of the embossing wheels 4a, 4b and the wave-shaped course of the structured strip 2e, 2f are not visible.

In the illustrated embodiments, the heating rollers 3a-3f and / or the embossing wheels 4a, 4b, 5a, 5b and / or the guide wheels 6a, 6b are each made approximately the same width as the Strip material 2. However, it may prove advantageous to design said rollers and wheels relatively wide, for example 10 cm or even 25 cm wide, so that one

Strip material 2 different widths of up to 10 cm wide or up to 25 cm wide can be processed without replacing the rollers and wheels. The geometrical configuration of the structure of the strips 2e, 2f can be changed in a simple manner by replacing the embossing wheels 4a, 4b, 5a, 5b of the forming devices 4, 5 with embossing wheels 4a, 4b, 5a, 5b, which are designed in such a way that the strips 2e, 2f can be reshaped accordingly. The invention thus has the advantage that in a simple manner, the structure of the strips 2e, 2f can be changed by the embossing wheels 4a, 4b, 5a, 5b are replaced.

FIG. 22 shows schematically and three-dimensionally the production of a honeycomb structure 10, the honeycomb structure 10 resting on a conveyor belt 9 moving in the conveying direction 9a. The honeycomb structure 10 has a stop edge 10a, which is supplied in a manner not shown structured strips 2e and struck on it. The feeding of the strips 2e could take place with a stop device 34 as shown in FIGS. 101 to 10o. The manufactured honeycomb structure 10 has an interspace and a first one

Partial honeycomb structure 10g and a second honeycomb structure 10h. The first partial honeycomb structure 10g is possible, for example, with the aid of a gripper 35 shown in FIG. 101, in that this gripper 35 positions the structured strip 2e intended for the first partial honeycomb structure 10g against the abutment edge 10a of the first partial honeycomb structure 10a so that it can be struck there. The creation of a gap 10f, for example, has the advantage that a sandwich construction whose honeycomb core 10 is covered with a cover layer has a hollow space within the honeycomb core 10, namely the cavity

Gap 2f.

Figure 23 shows schematically an embodiment of the invention

Manufacturing apparatus 1 for producing a honeycomb structure 10. The manufacturing apparatus 1 includes at least one feeding device 32 for feeding a patterned strip 2e, and includes a stopper 34 around the patterned strip 2e in front of

Position stop edge 10a and then connect to the honeycomb core 10. On the one hand, the stop device 34 forms an entry channel 34a in order to enter the structured strip 2e starting from the feed device 32 and to position it in front of the stop edge 10a. The stop device 34 also includes stop means such as Stamp 21 a, 21 b to connect the structured strip 2 e with the stop edge 10 a, so that the strip 2 e part of the honeycomb structure 10 is. The inventive

Manufacturing device 1 is similar to a weaving machine. A fabric made with a weaving machine has warp threads and weft threads, wherein the weft threads are held together by the warp threads. In webmaschinentechnischer terminology corresponds to be entered structured strip 2e a weft. The function of the warp threads is taken over in the inventive manufacturing device 1 or in the produced honeycomb structure 10 by firmly connecting the respective registered structured strip 2e with the honeycomb structure 10, wherein this compound is configured as a thermoplastic compound, a thermosetting compound or an adhesive bond. Due to the relatively great similarity between the inventive production device 1 and a weaving machine, such as an air or rapier weaving machine, the inventive manufacturing device 1 has a variety of properties, as they were previously known only in weaving machines. Similar to weaving machines, the production device 1 according to the invention allows a multiplicity of possible differently structured strips 2e, 2f to be entered, wherein the structured strips 2e, 2f could differ, for example, in terms of structure, weight, width B, color or material. In addition to structured strips 2e, 2f, a multiplicity of other materials or structures 28a, 28b, 28c can also be entered, for example a

Channel member 28a having a channel 28, as shown in Figures 24 and 24a. The structure of the honeycomb structure 10 according to the invention is preferably formed from strip-shaped material containing cellulose or paper. If necessary, however, it is possible to include additional, other materials in the honeycomb structure 10. As a first approximation, it can be assumed that such materials with the stop edge 10a of

Honeycomb structure 10 can be connected, which with the stop edge 10a of

Firmly connect honeycomb structure 10, e.g. also by gluing. However, if the honeycomb structure 10, for example, additionally connected to the support surface 9 by the

Support surface 9, for example, designed as a lower cover plate, or by the

Honeycomb structure 10 is additionally covered with an upper cover plate, this lower and / or upper cover plate can take over the function of "warp threads" at least partially, so that registered materials are not necessarily over with the stop edge 10a of

Honeycomb structure 10 must be connected. It would thus even be possible to form a gap l Of as shown in FIG. 22, this gap l Of, in the Difference from the embodiment shown in Figure 22, perpendicular to

Displacement direction 9a would run.

The manufacturing apparatus 1 shown in FIG. 23 has one each on both sides

Feeding device 32, which each have a structured strip 2e, 2f of

Can perform stop device 34. A plurality of feeders 32 could be provided, with the individual feeders 32 forming, for example, geometrically differently configured structured strips, e.g. In addition, supply devices can also be provided to supply other materials or other structures 28a, 28b, 28c of the stop device 34.

FIG. 24 shows in a side view and FIG. 24a shows a top view of a selection from a multiplicity of possibilities for the production of honeycomb structures 10

According to the invention, the displacement direction during the production of the honeycomb structure 10 takes place in the direction 9a, for which reason the structure of the illustrated honeycomb structure 10 is begun with the first strip entered, the strip 2e shown on the right. It should be noted that the term "strip" is used in the context of the description of Figures 24 and 24a, although the honeycomb structure 10 no longer has strips but forms a total structure the honeycomb structure 10 has been constructed, with the illustrated honeycomb structure 10 no longer having any "streaks" because they are firmly joined or fused together or welded together.When starting from the right, the honeycomb structure 10 was produced such that first a strip 2e and subsequently a Next, a strip 2f and subsequently a strip of metal 28c was inserted, followed by a passageway 28a having a continuous channel 10e and made of, for example, a plastic or a metal a narrower strip 2fl registered, w obei this was struck flush with the honeycomb structure 10 above, so that there is a depression lOd below. In order to strike the narrow strip 2fl in such a way, it is necessary to arrange it in the horizontal direction exactly at the stop 27. This can be done, for example, by means of the arrangement shown in FIG. 1d such that the narrow strip 2fl rests on the bearing surface 9 resting against the stop 27 at the bottoms 27a, elevations 27b and inclined locations 27c. Then, a vacuum is generated via the holes 27d, so that the narrow strip 2fl bears firmly against the stop 27. thereupon the stop 27 is moved upward in the direction of movement 27f, and then the narrow strip 2fl is struck against the stop edge 10a, as shown in FIG. 10e, for example, and thus connected to the honeycomb structure 10. Of course, instead of the stop 27, the support surface 9 and / or the honeycomb structure 10 could also be displaced in the vertical direction in order to position the strip 2fl with respect to the honeycomb structure 10. The

Displacement of the stop 27 in the displacement direction 27f has the advantage that a strip 2e held by the stop 27 can be positioned and struck quickly and precisely with respect to the honeycomb structure 10. Returning to FIG. 24, two narrow strips 2e2 and 2f2 were subsequently struck against the narrow strip 2fl, wherein no height adjustment of the stop 27 is required for striking these narrow strips 2e2 and 2f2, since these strips rest on the support surface 9 and therefore stop edge 10a of the honeycomb structure 10 are positioned. Subsequently, a strip 2e was struck.

Subsequently, the narrow strip 2fl was struck for the time being, in the same way as the previously described narrow strip 2fl. Subsequently, the narrow strip 2e2 was placed on the supporting surface 9 and likewise inserted, as shown in FIG. 10e, against the stop edge 10a and thus connected to the honeycomb structure 10. In the embodiment according to FIG. 24, this process was repeated, then a

Registered metal strip 28, and then entered a structured strip 2f, which forms the stop edge 10a. Between the strips 2fl and 2e2, a continuous cavity 10e has been formed, which can be used, for example, as a channel, for example for conducting conduits such as electricity or water.

The narrow strips 2fl, 2f2 and / or 2e2 can be available via a feed device 32 by being located downstream of a supply roll with strip material 2 of this narrow width. Another way to produce the narrow strips 2fl, 2f2, 2e2 is to process the strip material 2 with a cutting device 23 shown in Figure 1a, so starting from a strip material 2 with a predetermined width B narrower strips could be produced with the required width.

With the help of a cutting or punching device 23, a strip material 2 with

predetermined width B can be changed in a variety of ways to

Strip material 2 to produce desired cutouts 2u or openings 2v. FIG. 25 shows, by way of example, an unstructured strip 2, 2a with a

cut out point 2u and an opening 2v. FIG. 25 a shows a plan view of a honeycomb structure 10, in which the unstructured strips 2 a shown in FIG. 25 were used, by which they were subsequently fed to the forming device 32 and were then supplied as structured strips 2e of the stopper 34 and were struck against the stop edge 10a of the honeycomb structure 10. If all the unstructured strips 2a were produced with identically arranged cut-out locations 2u and / or openings 2v, then in FIG. 25a they would run exactly in the direction 9a. In the exemplary embodiment according to FIG. 25a, the position of the cut-out point 2u and of the opening 2v has been changed successively in such a way that the course of the cut-out point 2u or the opening 2v is formed in the honeycomb structure 10. FIG. 25b shows an end view of the honeycomb structure 10 shown in FIG. 25a. FIG. 26b shows a section of the forming device 4, namely the intermeshing of teeth 4c of the first and second embossing wheels 4a, 4b, thereby to feed the unstructured strip 2c into a structured half-honeycomb strip 2e to shape. In a particularly advantageous embodiment, the surface of the teeth 4c in the circumferential direction of the embossing wheels 4a, 4b designed such that during rolling of the embossing wheels 4a, 4b results in a linear or surface-shaped contact point 4p, which runs continuously along the unstructured strip 2c, as shown in Figure 26f. In a particularly advantageous embodiment, the transition point between unstructured strip 2c and structured strip 2e is located at the contact point 4p. In a preferred embodiment, the contact point 4p in the circumferential direction of the embossing wheels 4a, 4b is relatively short, and preferably has a length 4u between 1 mm and 10 mm. The shorter the length 4u of the contact point 4p, the higher the surface pressure caused at the contact point 4p on the strip 2c, 2e. A high surface pressure results in the advantage that the binder which crosslinks to form a Duropalst is pressed into the strip material 2 well and that condensation products released during the polycondensation are extruded from the strip material 2. The surface pressure, for example, has a pressure in the range between 10 to 300 bar, in particular of about 20 bar.

FIG. 26 shows in a side view a first embossing wheel 4a whose outer part 4q is made of a ferromagnetic material and whose inner part 4r is not on one

ferromagnetic material or an electrically non-conductive material. FIG. 26 a shows the first embossing wheel 4 a shown in FIG. 26 in a three-dimensional view. Figure 26c shows a section through the first embossing wheel 4a along the section line C-C, wherein

in particular the outer part 4q and the inner part 4r can be seen. In the direction of the outer part 4q and spaced from the stamping wheel 4a are on both sides each one Induction device 4n arranged, which are formed in the illustrated embodiment as Helmholzspulen. This induction device 4n together with the outer part 4q forms an induction heater, wherein the heat generated in the outer part 4q can be controlled via the current supplied to the Helmholz coils and the frequency. In an advantageous embodiment, the inner part 4a consists of a good heat-conducting material, so that the heat generated in the outer part 4q is again quickly dissipated. It may also be advantageous to provide a cooling device, for example a fan arranged next to the embossing wheel 4a. The arrangement shown in Figure 26c allows a fast and very precise heating of the outer part 4q or a very fast and very precise heating or cooling of the located between the embossing wheels 4a, 4b strip 2c, 2e. If the embossing wheel 4a is additionally provided with a cooling device, the heating or cooling of the strip 2c, 2e can take place more precisely. Temperature is the most important parameter besides pressure

Influencing the running in the strip 2c, 2e chemical reaction, which takes place due to the polycondensation. The temperature is preferably controlled in such a way that the strip 2c, 2e located in the embossing wheel 4a, 4b has a temperature in the range between 120 ° C. and 280 ° C.

FIG. 26d shows a side view of a further embodiment of a particularly advantageous embodiment of an embossing tooth 4c of the embossing wheel 4a. In contrast to the embossing teeth 4c shown in FIG. 26b or 26b, the embossing tooth 4c shown in FIG. 26d has a depression 4s which has a length 4t in the circumferential direction. In a particularly advantageous embodiment of a stamping wheel 4a, each stamping tooth 4c has a recess 4s with the same length 4t, the geometric shape of the recess 4s being of subordinate importance. The depression 4s has the consequence that during the rolling of the embossing wheels 4a in the running direction of the strip 2c, 2e no pressure point 4p is formed everywhere, where the recess 4s of the one embossing wheel 4a, 4b to the opposite embossing wheel 4b, 4a lie comes, so that in this section no or only a very small pressure on the strip 2c, 2e acts. In FIG. 6c, in one possible embodiment, such sections are designated by 2 ×. If the outer part 4q is heated, this also means that the strip 2c, 2e is exposed to a lower temperature in the section of the length 4t or in the section 2x, since the strip 2c, 2e is less heated at this point. This has to follow that networking

or the chemical reaction taking place in the strip 2c, 2e is not or less done quickly. Thus, a patterned strip 2e can be produced which is in

Course direction sections with different networked! Binder comprises, for example, sections such as the side surfaces 2k, in which the binder is crosslinked to thermoset, and sections such as the sections 2x, in which the binder is not or only partially crosslinked to thermoset. Such sections 2x are also referred to herein as contact sections 2h, 2i. Such a structured half-honeycomb strip 2e can be combined with the honeycomb structure 10 particularly advantageously at the stop edge 10a, since, as shown in FIG. 10e, the sections located between the stop 27 and the punch 21a correspond to the section 2x according to FIG. 6c. In a particularly preferred embodiment, the punch 21 a and the stopper 27 are heated, preferably also with an induction heater. In addition, a pressure is exerted on the located between the stop 27 and the punch 21 a portions preferably via the punch 21 a, so that the polycondensation and / or crosslinking of the binder to thermoset takes place and the two located between stop 27 and punch 21 a sections mutually connect well, or welded together and form a thermoset compound. This results in a particularly advantageous connection, so that the supplied structured strip 2e becomes part of the honeycomb structure 10. FIG. 26n shows, in a side view, a further exemplary embodiment of a particularly advantageous embodiment of three embossing teeth 4c of a stamping wheel 4a successively in the circumferential direction. All embossing teeth 4c have the recess 4s of length 4t already described in FIG. 26d. In addition, the depressions 4d between the embossing teeth 4c have the same depressions 4s of the length 4t as the embossing teeth 4c. This configuration has, in the case of two embossing wheels 4a intermeshing each other, that no pressure is exerted on the strip material 2 located therebetween along the length 4t, and the strip material 2 experiences no or little or reduced heating, since the strip material 2 runs along this section does not come into direct contact with the embossing wheels 4a. This makes it possible to produce in the strip material 2 contact sections 2h, 2i, along which the condensation reaction is not or only partially carried out.

Figure 27 shows a side view schematically a forming device 4 comprising a first stamping wheel 4a which is mounted on a hub 4k and which of a

Drive device 4h, for example, an electric motor, is driven. A second embossing wheel 4b is mounted on a hub 41, and is driven by a drive device 4i, for example an electric motor. The two embossing wheels 4a, 4b engage each other. In an advantageous

Embodiment, the two hubs 4k, 41 via a pressure generating device 4m, preferably connected to each other via an electrically controllable pressure generating device 4m to generate by a corresponding control of this pressure generating device 4m a force KL ZU, and the effect on the strip 2c, 2e pressing force on the effecting pressure point 4p shown in FIG. 26b. In one possible embodiment, at least the drive devices 4h, 4i are controllable by a control device 30 in order to control the rotational speed, as well as increasing and reducing the rotational speed and / or the torque Da, Db about the axes of rotation 4y, 4z. In a further advantageous embodiment, an induction device 4n is additionally arranged on at least one of the embossing wheels 4a, 4b in order to heat the embossing wheels 4a, 4b as described in FIG. 26c. The induction device 4n is preferably also controllable by the control device 30, wherein, in particular, not yet shown temperature sensors could be connected to the control device 30, wherein these temperature sensors, e.g. detect the temperature of the embossing wheels 4a, 4b or the temperature of the strips 2c, 2e, so as to form with the aid of the induction device 4n a controllable induction heater, which makes it possible to control the heating of the strip 2c, 2e exactly. In a further possible embodiment, moreover cooling devices 4o could also be provided, in particular also controllable

Cooling devices 4o to cool the embossing wheels 4a.4b also, preferably via the control device 30 to cool.

In a particularly advantageous embodiment, the forming device 4 is configured such that the embossing wheels 4a, 4b can be replaced, for example by embossing wheels 4a, 4b with the same diameter but a different width D and / or embossing wheels 4a, 4b arranged differently or geometrically differently configured teeth, such as shown in Figures 5a and 5b, and / or embossing wheels 4a, 4b with a larger or smaller diameter. In a particularly advantageous embodiment, the forming and feeding device 32 and the stop device 34 are designed such that they could process a maximum width B of a strip 2c, 2e and narrower strips 2c, 2e, for example by the height of the stop 27 for processing a strip is designed with maximum width B. The production device 1 according to the invention thus has the advantage that the strips 2c, 2e, which could be processed with the same production device 1, can have an arbitrary width below the maximum width B. The with the Forming device 4 generated structure of a structured strip 2e can be changed in a simple manner by replacing the two embossing wheels 4a, 4b. The

Herst llungs device 1 according to the invention is therefore extremely flexible, because in an advantageous embodiment, only the embossing wheels 4a, 4b are exchanged to

A variety of honeycomb structures 10 to form. If a cutting device 23 is used, the width B of the strips 2e can be determined via the cutting device 23. However, in order to avoid cutting waste at best, it may prove to be advantageous to exchange the embossing wheels 4a, 4b and the strip material 2 to a

Strip material of suitable width to use, so no cutting is required.

FIG. 26e shows a partial view of a section through the two embossing wheels 4a, 4b with strips 2c, 2e arranged therebetween, at which point the transition takes place between the unstructured strip 2c and the structured strip 2e. The surface 4v is configured to extend in a V-shape in the illustrated embodiment, so that in

Center region 2y of the strip 2c, 2e, a higher pressure is generated as in the edge region 2z of the strip 2c, 2e. The V-shaped course of the surface 4v is shown oversubscribed for better visibility, the center region 2y projecting in an advantageous embodiment, for example, 0, 1 mm to 1 mm with respect to the edge region of the first and / or second embossing wheel 4a, 4b. This causes an extrusion force 4w directed towards the edge region 2z, with which, for example, the condensation products released during the polycondensation are pressed out of the strip material 2 in the direction of the edge region 2z. The surface 4v may be configured to extend in a variety of ways to provide for

Edge region 2z to produce aligned extrusion force 4w.

FIG. 26f shows a top view of the unstructured strip 2c and the structured strip 2e, with the pressure point 4p, which has a length 4u, and which lies in FIG

Course of the strip 2c, 2e moves. In addition, the center region 2y of the strip 2c, 2e and the edge region 2z are shown. The pressure point 4p advantageously has a length 4u between 1 mm and 10 mm.

FIG. 26g shows a partial view of a section through a stamping wheel 4a. The surface 4v is configured to extend in a similar manner as shown in FIG. 26e, wherein the surface 4v, as shown, also has a structured surface, such as a microstructure, for causing an uneven force on the strip 2c, 2e, and for pressing out condensation products support. The substantially V-shaped course of the surface 4r is shown oversubscribed for better visibility, the center area in an advantageous embodiment, for example, 0.1 mm to 1 mm with respect to the edge region of the first and / or second embossing wheel 4a, 4b projecting.

Figure 26h shows a partial view of a top view of the surface 4d, 4g of a stamping wheel 4a, e.g. as shown in Figure 26d. The surface 4v comprises linear running

Elevations 4x, which are shown in Figure 26i in a section along the section line D-D, wherein the height of the surveys are shown oversubscribed 4x for better visibility. The height of the elevations 4x, also depending on the thickness of the strip 2c, advantageously lies in the range between 0.1 mm and 2 mm. The elevations 4x cause a structuring or embossing of the strip 2e, as shown in FIG. 26k. The regions 2k have such depressions 2j. FIG. 261 shows, as a section through the strip 2e, exemplary possible recesses 2j. In the illustrated embodiment, the recesses 2j are always parallel. However, the recesses 2j may be in a variety of ways. The recesses 2j have, for example, the advantage that the mechanical stability of the thermoset, semi-honeycomb strip 2e can be improved. The depressions 2j also have, for example, the advantage that the condensation products released during the polycondensation can be better pressed out of the strip material 2. The half-honeycomb strip 2e may be provided on such a side or on both sides with such recesses 2j or with such an embossing. The depressions 2j can be arranged to run continuously in the direction of progression of the strip 2e, or only in sections as shown in FIG. 26k.

FIG. 26m schematically shows the forces and moments already shown in FIG. 27 and occurring at the embossing wheels 4a, 4b. The first stamping wheel 4a is rotatably supported around the rotation center 4y, while the second stamping wheel 4b is rotatably supported around the rotation center 4z. The embossing wheels 4a, 4b rotate in the direction of rotation 4za or 4zb. The drive devices 4h, 4i cause a torque Da or Db. The pressure generating device 4m generates a force K _L. Essentially the sum of the force K _L and the torques Da and Db causes the force K acting on the pressure point 4p. The force K can thus be controlled by the control device 30 via one or both of the torques Da and Db and the force KL. In an advantageous method step, the half-honeycomb strip 2e, 2f, after it is formed, cooled, wherein the half-honeycomb-shaped strip 2e, 2f is held during the cooling in particular dimensionally stable. In an advantageous method step, the strip material 2 is preheated to a temperature between 50 ° C and 120 ° C before being fed into the embossing wheels 4a, 4b.

In an advantageous method step, the pressure caused on the strip material 2 is controlled by each embossing wheel 4a, 4b being driven individually and the torque of at least one or each of the embossing wheels 4a, 4b being individually controlled. In an advantageous method step, the two embossing wheels 4a, 4b are pressed against one another with a controllable linear force KL, wherein a controllable torque Da, Db is effected on each embossing wheel 4a, 4b, and wherein the linear force L and the torques Da, Db are controlled in this way in that a predetermined pressure which acts on the strip material 2 results between the two stamping wheels 4a, 4b.

FIG. 28 shows a plan view of an unstructured strip 2a. This has cutouts 2u or protruding tabs 2w. FIG. 28a shows a structured strip 2e formed from the strip 2a according to FIG. 28 in a plan view, wherein the strip 2e rests on a base plate 9, and only the lower, protruding tabs 2w lying on the base plate 9 are shown. These tabs 2w have to

Example, the advantage that a particularly advantageous connection between the strip 2e and the base plates 9 is possible.

FIG. 29 shows in a plan view and FIG. 29a in a side view the production of a double-layer sandwich structure 33 comprising a base layer 33a, a first one

Honeycomb structure 33b, 10, an intermediate layer 33c, a second honeycomb structure 33d, 10 and a cover layer 33e. At the abutment edges 10a, patterned strips 2e, 2f are fed by means of the feeder 32 and inserted and struck by means of the stopper 34, as shown in Fig. 29, so that the first and second honeycomb structures 33b, 33d are formed. In addition, a roller with intermediate layer 33 and cover layer 33e is mounted on the axes 33f, 33h so that they are placed on the corresponding honeycomb structure 33b, 33d, as shown in FIG. 29a. FIG. 29b shows in a plan view and FIG. 29c in a side view the production of a further double-layered sandwich structure 33 comprising a base layer 33a, a first honeycomb structure 33b, 10, an intermediate layer 33c, a second honeycomb structure 33d, 10 and a cover layer 33e. At the abutment edge 10a, a structured strip 2e is fed by means of the feeder 32 and inserted and struck by means of the stopper 34 as shown in Fig. 29b. On the first honeycomb structure 33 b is a

Intermediate layer 33c applied by this is rotatably mounted above an axis 33f as a supply roll 33g. After the complete production of the first honeycomb structure 33b and the covering with the intermediate layer 33c, a structured strip 2f is then introduced by means of a feed device 32 to form a second honeycomb structure 33d, the strip 2f extending perpendicular to the structured strip 2e. Thus, a sandwich structure 33 is formed with two mutually perpendicular honeycomb structures 33b, 33d. For example, it is also possible to omit certain strips 2e, thereby forming a depression 10d or a continuous channel 11d in the sandwich structure 33.

FIG. 29d shows a top view of a composite structure comprising a honeycomb structure 10 with structured strips 2e, 2f connected via connecting points 2s. Below the

Honeycomb 10 is an intermediate layer 33 c arranged. As a conclusion, a connecting strip 2e3 is connected on the right with the structured strip 2e arranged on the right. FIG. 29e shows the arrangement shown in FIG. 29d along the section line D-D. FIG. 29e shows two honeycomb structures 10, one upper and one lower, consisting of over

Lines 2s connected structured strips 2e, 2f. Between

Honeycomb structures 10, the intermediate layer 33 c is arranged. The upper and the lower

Honeycomb structure 10 is connected to each other via the connecting strip 2e3. Of the

Connecting strip 2e3 gives the advantage that the upper and lower honeycomb structure 10 are mutually held in a defined position. This gives the advantage that the

Intermediate layer 33c need not have a supporting function and therefore, e.g. also as

compressible material such as: an insulating material may be configured. In a further advantageous embodiment, the composite structure shown in Figures 29d and 29e, as indicated by the connecting element 2e4, a plurality of

Connecting strip 2e3 and / or connecting elements 2e4 to keep two honeycomb structures 10 mutually spaced. The connecting elements 2e4 can, as shown in FIG. 29d, be designed to be relatively short in the course direction of the strips 2e, 2f. The connection between the connecting strip 2e3 or the connecting elements 2e4 and the structured strip 2e of the upper and lower honeycomb structure 10 can eg

Adhesive bond or a thermosetting compound. FIG. 30 schematically shows a machine 40 for producing a thermoset

Honeycomb structure 10 of a strip material 2, wherein the strip material 2 consists essentially of a fiber material, in particular of a paper web, which is preimpregnated with a binder which crosslinks to a thermoset. The strip material 2 is fed to a device 32 for producing a thermosetting, semi-honeycomb-shaped strip 2e, 2f, which forms a thermosetting, semi-honeycomb-shaped strip 2e, 2f from the strip material using pressure and temperature. The thermoset,

half-honeycomb strips 2e, 2f are fed to a buffer 36 and then fed by a feed device 37 and a positioning device 38 of a connecting device 21, 34, which connect the thermoset, semi-honeycomb strips 2e, 2f to a honeycomb carpet 10. Advantageously, the

Honeycomb carpet 10 a stop edge 10a, with each of which a thermoset, semi-honeycomb strip 2e, 2f is connected, said strip 2e, 2f, which is now part of the honeycomb carpet 10, also the stop edge 10a for the next thermoset, semi-honeycomb strip 2e, 2f formed. It would also be possible to dispense with a buffer 36 in that the thermoset, half-honeycomb strips 2e, 2f reach the feeding device 37 directly after the device 32. Another possible method could be that for the time being only with a device 32, the thermoset, semi-honeycomb strips 2e, 2f are made. These thermosetting,

half-honeycomb strips 2e, 2f could be stored and, if necessary, transported to another location to produce the honeycomb structure 10 by means of the devices 37, 38 and 34 at a later time and possibly also at another location.

One possible method for the continuous production of a honeycomb structure 10 is characterized in that two provided with a polymer material or a silicate

Strip materials 2a, 2b are formed into structured strips 2e, 2f;

the two structured strips 2e, 2f are brought together and joined together to form a honeycomb structure 2g, wherein a thermoplastic or thermosetting compound or a silicate connection is formed between the two structured strips 2e, 2f, such that the honeycomb structure 2g has a predetermined length to form a honeycomb strip 13 is cut, that the honeycomb strip 13 has a stop for abutment against a stop edge 10 a of the honeycomb 10 certain stop side 13 b, that the stop side of

Honeycomb strip 13 and / or the stop edge 10 a of the honeycomb structure 10 is provided with an adhesive, and that the abutment side 13 b of the honeycomb strip 13 of the stop edge 10 a of the honeycomb structure 10 is supplied and bonded thereto, so that the honeycomb strip 13 forms part of the honeycomb structure 10, wherein the last supplied and glued honeycomb strip 13 forms a stop edge 10a, to which the next following honeycomb strip 13 is adhered. In another possible method, the strip material 2a, 2b with a

Polymer material is provided, and the strip material 2a, 2b heated before structuring.

A possible device 1 for the continuous production of a honeycomb structure 10, comprising a feed 20 for at least two strip materials 2a, 2b, comprises one

Forming device 4, 5 for structuring each strip material 2a, 2b to a

structured strip 2e, 2f, comprises a connecting device 6 for mutual positioning and merging of the two structured strips 2e, 2f to one

Honeycomb structure 2g, comprising a cutting device 7 for cutting the honeycomb structure 2g into a honeycomb strip 13, comprises a support surface 9 for depositing the honeycomb strip 13, comprises an adhesive supply device 12 for providing a stop side 13b of the honeycomb strip 13 and / or a stop edge 10a of the honeycomb structure 10 with a

Adhesive, and comprises a feeding device 17 to the honeycomb strip 13 with the stop side 13 b of the stop edge 10 a of the honeycomb structure 10 to feed, thereby bonding the honeycomb strip 13 to the honeycomb structure 10.

One possible honeycomb structure includes a plurality of honeycomb strips, each one

Honeycomb strip of two strips comprising contact portions, and wherein opposite contact portions of the two strips to form a thermoplastic compound, a thermosetting compound or a silicate compound are mutually connected, and wherein each honeycomb strip each having a stop edge 10a and an adhesive surface 13b, and wherein one Stop edge 10a and an adhesive surface 13b of two adjacently arranged honeycomb strips 13 are firmly connected to each other via an adhesive bond 22. In an advantageous embodiment, the device 1 for producing a

Honeycomb structure 10 of strip material 2, a feeding and forming device 32 which forms a patterned strip 2e, 2f from the strip material 2 and also a

Conveying speed of the structured strip 2e, 2f determines, and includes a

Stop device 34 having an entry channel 34a, wherein the stopper 34 of the forming device 32 is arranged downstream such that the structured strip 2e, 2f the feed channel 34a can be fed, and wherein the honeycomb structure 10 has a stop edge 10a, which is parallel to the entry channel 34a, and wherein the stop device 34 comprises a stop 27 and stop means 21 a, 21 b, which are designed such that the structured strip 2e, 2f with a stop edge 10a of the

Honeycomb structure 10 is connectable.

Advantageously, the feeding and forming device 32 comprises a first and a second embossing wheel 4a, 4b with mutually interlocking embossing teeth 4c, wherein the first and second embossing wheels 4a, 4b are adapted to each other adapted that the strip material 2 between the first and second embossing wheel 4a 4b can be arranged to extend during the rotation of the first and second embossing wheels 4a, 4b to the structured strip 2e, 2f, wherein the rotational speed of the first and second embossing wheels 4a, 4b also determines the conveying speed of the structured strip 2e, 2f.

The stop 27 and the stop means 21a, 21b are preferably designed to be movable so that the stop 27 and the stop means 21a, 21b the structured

Strip 2e, 2f and the stop edge 10a each comprise a side, so that the structured strip 2e, 2f and the stop edge 10a are pressed against each other.

In an advantageous embodiment, the embossing wheels 4a, 4b are designed to extend in the circumferential direction in such a way that the structured strip 2e, 2f has deflections 2m which only extend in an arcuate manner but have no kinking points.

In an advantageous embodiment, the first and second embossing wheels 4a, 4b are arranged interchangeably, wherein a plurality of sets of first and second embossing wheels 4a, 4b are available, with each set of first and second embossing wheels 4a, 4b a differently structured strip 2e , 2f is producible.

In an advantageous embodiment, air nozzles and / or outlet openings 27h for a gaseous fluid are arranged along the inlet channel 34a, which are aligned in this way are that they support the entry of the structured strip 2e, 2f into the entry channel 34a.

In an advantageous embodiment, with a control device 30, at least the rotational speed of the embossing wheels 4a, 4b and the heating device 3 and / or the

Induction device 4n drives such that the structured strip 2e, 2f in the feeding and forming device 32 has a predetermined temperature.

In an advantageous embodiment, the embossing wheels 4a, 4b a controllable

Cutting device 7 downstream, which intersects the structured strip 2e, 2f in particular such that the length of the structured strip 2e, 2f substantially corresponds to the width of the honeycomb structure 10.

In an advantageous embodiment, a memory 36 is arranged between the embossing wheels 4a, 4b and the entry channel 34a for the temporary storage of the structured strip 2e, 2f conveyed by the embossing wheels 4a, 4b.

In an advantageous method for producing a honeycomb structure 10 made of strip material 2, the strip material 2 is formed into a structured strip 2e, 2f, wherein the structured strip 2e, 2f is fed to a stop edge 10a of a honeycomb structure 10, and wherein the structured strip 2e, 2f the stop edge 10a is connected so that the structured strip 2e, 2f becomes a part of the honeycomb structure 10.

In an advantageous method step, the embossing wheels are rotated so fast that the strip material 2 and / or the embossing wheels 4a, 4b are heated in such a way that the structured strips 2e, 2f between the embossing wheels 4a, 4b or after leaving the embossing wheels 4a, 4b have predetermined temperature.

In an advantageous method step, the rotational speed of the

Stamping wheels 4a, 4b determines the conveying speed of the structured strip 2e, 2f.

In an advantageous method step, sections 2 x, 2 f are produced in the structured strip 2, onto which the embossing wheels 4 a, 4 b have exerted no or a reduced pressing force. In an advantageous method step, the structured strip 2e, 2f is fed to the honeycomb structure 10 synchronously with the rotational speed of the embossing wheels 4a, 4b of the stop edge 10a.

In a further advantageous method step, the embossing wheels 4a, 4b are operated continuously.

In a further advantageous method step, the structured strip 2e, 2f is cut, whereby the structured strip 2e, 2f conveyed after the cutting by the embossing wheels 4a, 4b is temporarily stored at least until the previously obtained in the Structured channel strip 2e, 2f is removed from the entry channel 34a, and the subsequent, partially stored structured strip 2e, 2f is thereafter inserted into the entry channel 34a.

A machine for producing a thermoset honeycomb structure 10 from a plurality of thermoset, half-honeycomb strips 2e, 2f, comprises in an advantageous

Embodiment A feed device 37 for half-honeycomb strips 2e, 2f comprises a positioning device 38 for feeding a fed semi-honeycomb strip 2e, 2f

Positioning joints 2s with respect to a stop edge 10a of a honeycomb structure 10, and includes a connecting device 21, 34 for connecting the supplied semi-honeycomb strip 2e, 2f at joints 2s with the honeycomb structure 10th

The connecting device 34 advantageously also comprises a plurality of punches 21a which are heatable and generate a pressure, wherein the punches 21a are arranged with respect to a fed semi-honeycomb strip 2e, 2f and the stop edge 10a of the honeycomb structure 10 such that the punches 21a at their Connections 2s act to cause at the junction 2s crosslinking of the binder to the thermoset.

Claims

PATENT CLAIMS

Device (32) for producing a thermoset, half-honeycomb-shaped strip (2e, 2f) from a strip material (2), the strip material (2) essentially consisting of a fiber material, in particular a paper web, which is pre-impregnated with a binder that crosslinks to form a thermoset is, comprising a first and a second embossing wheel (4a, 4b), each having a circumferentially extending contact surface (4v) with circumferentially spaced embossing teeth (4c) and recesses (4d) arranged therebetween, the first and second embossing wheels (4a , 4b) are designed to be mutually adapted and arranged to interlock with one another in such a way that a line or surface-shaped pressure point (4p) is created between the first and second embossing wheels (4a, 4b), which is formed during the rotation of the embossing wheels (4a, 4b). moved along the contact surface (4v) in order to generate a rolling pressure point (4p) moving along the strip material (2), and comprising a controllable pressure generating device (4m) which is connected to the first and second embossing wheels (4a, 4b). in order to generate a controllable pressure between the embossing wheels (4a, 4b), as well as comprising one each

Drive device (4h, 4i) for driving the first and second embossing wheels (4a, 4b), and comprising a heating device (4j) for at least one of the embossing wheels (4a, 4b), and comprising a control device (30), which is connected at least to the

Drive devices (4h, 4i) and the pressure generating device (4m) are connected to transmit signals in order to counteract the embossing wheels (4a, 4b).

To rotate the conveying direction (F) and to generate a controllable pressure at the pressure point (4p) via the pressure generating device (4m) and the drive devices (4h, 4i).

Device according to claim 1, characterized in that the contact surface (4v) of at least one embossing wheel (4a, 4b) has at least one recess (4s) running in the circumferential direction, the recess (4s) being arranged and designed in such a way that the strip material (2 ) the embossing wheel (4a, 4b) does not touch along the recess (4s) in order to be in the strip material

(2) to create a section (2h, 2i) along which the binder is not or only partially crosslinked to form a thermoset.

3. Device according to claim 2, characterized in that the contact surfaces (4v) of both embossing wheels (4a, 4b) each have at least one recess (4s) running in the circumferential direction, the two recesses (4s) being arranged and designed in such a way that they are mutually adapted, that the two recesses (4s) lie opposite each other so as not to touch the strip material (2) on both sides along the recesses (4s).

4. Device according to one of the preceding claims, characterized in that the contact surfaces (4v) are designed to run in such a way that the pressure point (4p) generates a higher pressure in a central region (2y) of the strip material (2) than in an edge region (2z ) in order to push the condensation products formed during the condensation reaction of the binder in the strip material (2) towards the edge region (2z).

5. Device according to one of the preceding claims, comprising a plurality of exchangeable embossing wheels (4a, 4b) with different diameters and / or differently extending contact surfaces (4v) and / or different

designed embossing teeth (4c), which can be connected to the device in order to produce differently structured half-honeycomb-shaped strips (2e, 2f).

6. Device according to one of the preceding claims, characterized in that the heating device (4i) is designed such that the embossing teeth (4c) of at least one embossing wheel (4a, 4b) consist of a ferromagnetic material, and that an induction device (4n) is arranged is to inductively heat the embossing teeth (4c).

7. Device according to one of the preceding claims, characterized in that the first and / or second embossing wheel (4a, 4b) has a structured contact surface (4v) in order to effect an embossing in the semi-honeycomb-shaped strip (2e, 2f).

8. Machine for producing a thermoset honeycomb structure (10) from a plurality of thermoset, half-honeycomb-shaped strips (2e, 2f), comprising a

Feeding device (37) for semi-honeycomb-shaped strips (2e, 2f), comprising a

Positioning device (38) for positioning a supplied semi-honeycomb-shaped strip (2e, 2f) at connection points (2s) with respect to a stop edge (10a) of a honeycomb structure (10), and comprising a connection device (21, 34) for Connecting the supplied half-honeycomb-shaped strip (2e, 2f) to the honeycomb structure (10) at connection points (2s).

9. Machine for producing a thermoset honeycomb structure (10) according to claim 8, comprising a device (32) for producing a thermoset,

Half-honeycomb-shaped strip (2e, 2f) according to one of claims 1 to 7.

10. Machine according to claim 8 or 9, characterized in that the

Connecting device (34) has a plurality of stamps (21a), which are heatable and generate a pressure, the stamps (21a) being arranged in this way with respect to a supplied semi-honeycomb-shaped strip (2e, 2f) and the stop edge (10a) of the honeycomb structure (10). are that the stamps (21 a) on their

Act on connection points (2s) to cause the binder to crosslink to the thermoset at the connection point (2s).

1 1. Machine according to claim 10, characterized in that the stamps (21a) have a pressing surface with a structured surface in order to effect an embossing of the connection points (2s).

12. Machine according to one of claims 9 to 1 1, comprising a buffer (36) for temporarily storing the semi-honeycomb-shaped strips (2e, 2f), wherein the

Buffer (36) is arranged downstream of the manufacturing device (32) and in front of the connecting device (34).

13. Machine according to one of claims 8 to 12, comprising a plurality of

Manufacturing devices (32) according to one of claims 1 to 7, and comprising a holding device (20) for a roll of strip material (2) of the total width (3B), and comprising a second cutting device (18) for synchronously cutting strip material (2). a width (B) for each of the manufacturing devices (32) from the roll of strip material (2).

14. A method for producing a thermoset, half-honeycomb-shaped strip (2e, 2f) from a strip material (2), the strip material (2) essentially consisting of a fiber material, in particular a paper web, which is pre-impregnated with a binder that crosslinks to form a thermoset , by this

Strip material (2) is heated, and by a first and a second embossing wheel (4a, 4b), each having a circumferentially extending contact surface (4v) with circumferentially spaced embossing teeth (4c) and recesses (4d) arranged between them, each of which is driven in opposite directions in a conveying direction (F) by a drive device (4h, 4i). , wherein at least one of the embossing wheels (4a, 4b) is heated, the first and the second embossing wheels (4a, 4b) being designed to be mutually adapted and arranged to engage one another in such a way that there is a contact between the first and the second embossing wheels (4a, 4b) running strip material (2) a line or area-shaped pressure point (4p) is created, which is continuously along the conveyed in the conveying direction (F).

Strip material (2) moves, the first and second embossing wheels (4a, 4b) being pressed against each other with a controllable pressure force (KL), and the

Drive devices (4h, 4i) cause a torque (Da) on the first embossing wheel (4a) and a torque (Db) on the second embossing wheel (4b), at least one of the torques (Da, Db) being controllable in such a way that the sum of pressure force (KL) and torques (Da, Db) at the pressure point (4p) generates a controllable pressure, in particular in a range between 10 bar and 300 bar.

15. The method according to claim 14, characterized in that the strip material (2) is not exposed to any compressive force (KL) in sections in order to thereby create connection points (2s) in the strip material (2) at which the binder does not or only partially crosslinks to form the thermoset is.

16. Process for producing a thermoset honeycomb structure (10) from a

Strip material (2), wherein the strip material (2) consists essentially of one

Fiber material, in particular consisting of a paper web, which is pre-impregnated with a binder that crosslinks to form a thermoset by heating the strip material (2) and subjecting it to a compressive force (KL) and thereby forming it into a thermoset, half-honeycomb-shaped strip (2e, 2f), wherein the strip material (2) is not subjected to any compressive force (KL) in sections in order to thereby create connection points (2s) at which the binder is not or only partially cross-linked to form the thermoset, and wherein thermoset, half-honeycomb-shaped strips (2e, 2f) are attached to them Connection points (2s) are connected to one another by heating mutually adjacent connection points (2s) and subjecting them to a compressive force.