DE102018211939A1 - Method of manufacturing a component and manufacturing device - Google Patents

Abstract

Method for producing a component 24, with a first assembly step and a second assembly step, wherein in the first assembly step an auxiliary structure 13 made of a first material 12 is applied to a carrier 8 by means of a photo-electric printing process, the auxiliary structure 13 having spaces 14 and / or forms, wherein in the second assembly step a second material 16 is applied as a material layer 17 in the spaces 14 by means of a photo-electric printing process, characterized in that the second material 16 has a lower viscosity and / or higher adhesive force than the first Material 12.

Description

State of the art

Method for producing a component, with a first assembly step and a second assembly step. In the first assembly step, an auxiliary structure made of a first material is applied to a carrier by means of a photoelectric printing process, the auxiliary structure having gaps. In the second construction step, a second material is applied as a material layer in the interspaces by means of a photoelectric printing process.

Additive manufacturing processes for the production of components, be it in prototype development or mass production, are widely used. A representative of such a process is the electrophotography of components based on polymers. There are also approaches to produce metal components using electrophotography. In this process, a manufacturing material is transferred from a photoreceptor roll to a carrier material by means of electrostatic interaction or thermal methods.

The publication US 2017 01 57 849 A1 , which is probably the closest prior art, describes a method for producing a three-dimensional object in a printing process. An electrical charge is applied to the outer surface of a rotating photoreceptor. Portions of the electrically charged photoreceptor are neutralized, after which a metal powder is applied to the surface of the photoreceptor. By rolling the surface on a workpiece, the metal powder is transferred to the workpiece as a thin layer of pressure.

Disclosure of the invention

A method for producing a component with the features of claim 1 is proposed. Furthermore, a manufacturing device with the features of claim 15 is proposed. Preferred and / or advantageous embodiments result from the subclaims, the following description and the attached figures.

A method for producing a component is proposed. The method is in particular a method of additive manufacturing. The method is designed to produce a plurality of components, for example in industrial production, alternatively the method is a method in prototype construction. The component is, for example, a metal component, alternatively the component is a ceramic component or a plastic component. In particular, the component can also be a component of different sections, for example with a metal, a plastic and / or a ceramic section. The component is in particular a three-dimensional component and has a component geometry. The component geometry can in particular be a complex geometry, for example with cutouts and / or undercuts. In particular, the component geometry can also have an extruded geometry.

The method has a first construction step and a second construction step. In particular, the second construction step takes place after the first construction step. The second set-up step can directly follow the first set-up step, alternatively a further step can be provided between the first set-up step and the second set-up step, for example a pause step or a drying step.

In the first construction step, an auxiliary structure is applied to a carrier. The auxiliary structure comprises a first material. In particular, the auxiliary structure is a solid, stable and / or non-deformable structure. The auxiliary structure is, for example, a three-dimensional structure and has an areal extension. In particular, the auxiliary structure is applied to the carrier, for example directly on the carrier, alternatively and / or additionally, the auxiliary structure can be applied to a structure already arranged on the carrier, for example a blank layer. The first material is preferably a plastic and / or a polymer. The first material is preferably water-soluble, soluble in an organic solvent and / or has a decomposition temperature of less than three hundred degrees Celsius.

The auxiliary structure is applied in a photoelectric printing process. The photoelectric printing process is, for example, an electrophotography process. The photoelectric printing process is preferably carried out by means of a photoreceptor roller. For this purpose, for example, the first material is applied to the photoreceptor roll. The first material applied to the photoreceptor roller adheres to the photoreceptor roller, for example based on an electrostatic interaction. The first material is applied to the photoreceptor roll in particular as an optical image of the structured auxiliary structure to be formed, with the photoreceptor roll being exposed accordingly. By exposing the photoreceptor roll in the form of the auxiliary structure, the photoreceptor roll is electrically neutralized at the exposed areas, for example. The exposure of the photoreceptor roller and / or the image on the photoreceptor roller takes place, for example, in the form of a negative of the auxiliary structure. The first material applied to the photoreceptor roll is transferred in a transfer process, especially in the assembly step, transferred to the carrier and / or an existing blank layer. The transfer takes place, for example, in a further electrostatic interaction or in a thermal process. For this purpose, for example, the carrier on which the auxiliary structure is to be applied is heated, the heating of the first material remaining there.

The auxiliary structure has gaps and / or forms gaps. The gaps are designed, for example, as cavities or as material cutouts. The intermediate spaces have a geometry section, the geometry section preferably corresponding to a cross-sectional contour of the component to be manufactured. The shape of the auxiliary structure corresponds in particular to a negative layer of the component to be built.

In the second construction step, a second material is applied. The second material is applied as a layer of material in the spaces. The second material is applied in the spaces in a photoelectric printing process. In particular, the second material is applied to the spaces by means of electrophotography. For example, the second material in the form of the intermediate spaces of the auxiliary structure is applied to a photoreceptor roller, the applied second material being removed into the intermediate spaces. The second material is transferred to the carrier in the second assembly step, for example, alternatively the second material can be transferred to an already existing layer, for example a blank layer. The second material is preferably a polymer and / or a plastic. The second material can form a dimensionally stable material, alternatively the second material can be an elastic and / or viscous material. The second material is preferably in the form of a gel. In particular, it can be provided that the composition of the first material corresponds to the composition of the second material. Alternatively, it can be provided that the second material is first applied, the second material thus applied having second spaces, the first material then being applied into the second spaces.

The method provides that the second material has a lower viscosity than the first material. In particular, the second material has a higher adhesive force than the first material. The adhesive force is based in particular on a powder, for example a metal, an aluminum, a steel or a ceramic powder. For example, the viscosity of the second material is less than eighty percent of the viscosity of the first material and specifically less than sixty percent of the viscosity of the first material.

It is a consideration of the invention to provide a method which offers a simplified possibility for the production of a complex shaped component. In particular, the method enables the production of components with undercuts, extruded geometry and / or with cutouts. The use of photoelectric printing processes in particular provides a particularly powerful and fast process.

It is particularly preferred that the auxiliary structure has a first layer height. The material layer made of the second material has a second layer height. Layer heights are, in particular, heights of a layer perpendicular to the areal extent of the support. In particular, it is provided that the first layer height is greater than the second layer height. For example, the first layer height is at least 1.5 times the second layer height, preferably at least twice the second layer height and in particular the first layer height is at least three times the second layer height. In particular, it can be provided that the material layer has different second layer heights in different sections, with in particular all second layer heights being smaller than the first layer height. This configuration is based on the consideration of using the auxiliary structure as a limitation, with space and space remaining, for example, to supplement the second material with further components.

A particularly preferred embodiment of the invention provides a powder application step. In particular, the powder application step takes place after the second build-up step. In the powder application step, a powder made of a third material is applied to the material layer. The third material comprises, for example, a metal powder, alternatively and / or additionally, the third material has a ceramic powder. The powder in particular has primarily a metallic composition and comprises, for example, iron, nickel, aluminum or titanium as main elements. In particular, the powder can comprise powder additives, for example binders, antioxidants, fillers or other chemical additives. The powder is applied to the material layer in the powder application step. In particular, the powder made of the third material is applied into the intermediate spaces of the auxiliary structure.

The powder is at least partially bound by the second material and / or at least partially sinks into the second material after the application by means of the powder application step. In particular, the powder and the second material are mixed. The second material forms a matrix for the powder, for example. Especially it is preferred that in the powder application step the powder is added in excess to the second material, with unbound and / or sunken powder remaining unused and / or reusable in the spaces. The powder and / or the third material has in particular the chemical composition of the component to be manufactured. For example, the component to be manufactured is an aluminum component, the powder then also comprising aluminum, for example, as the main element. This embodiment is based on the consideration of providing a method in which a component can be produced in a powder-based method, the positioning of the powder being improved by using the material layer made of the second material. In particular, slipping, blurring or blowing of the powder can be avoided in this way. By using the printing process, the quick positioning of the later powder is particularly easy.

One embodiment of the invention provides that the auxiliary structure forms a blank layer together with the material layer in the intermediate spaces. The blank layer forms a flat layer. In particular, the configuration provides that the powder is applied to the entire blank layer. The powder is thus applied flat to the blank layer. By applying the powder to the blank layer, the powder is bound only in the area of the material layer made of the second material, with powder falling on the auxiliary structure remaining unattached there. This configuration is based on the consideration that a particularly simple and constructive configuration of the powder application step is possible due to the surface application of the powder on the blank layer.

It is optionally provided that the powder is applied to the material layer and / or the blank layer by means of pressure. For example, the powder is applied with compressed air. Alternatively, the powder can be applied purely based on gravitational effects. For example, the powder is sprayed onto the material layer and / or the blank layer. The pressure for applying the powder by means of pressure and / or by means of spraying is in particular selected such that the powder has a minimum penetration depth into the second material and / or into the material layer. The application of the powder by means of a powder jet is particularly preferred. The application of the powder by means of a powder nozzle has the particular advantage that the powder can be applied locally into the spaces.

The powder is particularly preferably in the form of a metal powder. The metal powder has powder particles. The powder particles are in particular in the form of powder grains, for example metal grains. The powder grains have an equivalent diameter smaller than the first layer height. The powder has in particular a powder size distribution, the powder size distribution having a D90 value smaller than the second layer height. It is particularly preferred that the equivalent diameter of the powder grains is smaller than five hundred micrometers, in particular smaller than one hundred micrometers and in particular smaller than fifty micrometers. This embodiment is based on the consideration of providing a method with which high-quality material layers can be produced with powder.

One embodiment of the invention provides a powder removal step. The powder removal step takes place in particular after the powder application step. Excess and / or unbound powder is removed in the powder removal step. The powder is removed in particular from the auxiliary structure in the powder removal step. Furthermore, in the powder removal step, for example, powder is removed from the gaps, which was not bound by the second material and / or has not sunk into the second material. The powder is removed in the powder removal step, for example, by suction, in particular with a global and in particular with a local suction device. The suction is in particular dimensioned such that the relative force for suction, which acts on the powder, is so strong that all the powder lying thereon is removed. As an alternative and / or in addition, powder removal can take place on electrostatic interactions, for example powder removal by means of magnetic interaction is possible for an iron powder.

It is particularly preferred that the binding and / or the adhesion of the powder by the second material is based on mechanical anchoring. For example, the mechanical anchoring takes place by bombarding the second material and / or by applying the powder with pressure. The powder sinks and / or penetrates at least partially into the surface and / or into the second material. Alternatively and / or additionally, the powder binds through the second material by means of a chemical bond. The bond can also be made by an adhesive force. It can further be provided that the binding of the powder by the second material is based on a diffusion and / or on a pseudodiffusion. For example, the powder diffuses at least partially into the second material. Another possibility of binding the powder to the second material can be by means of electrostatic interaction. This configuration is based on the consideration of providing a method which is simple realizable binding of powder and second material.

One embodiment of the invention provides surface treatment. In the surface treatment, a surface of the material layer is treated. The surface treatment is designed to increase the porosity and / or to increase the adhesion. The surface treatment in particular also increases the bond between the powder and the second material. The surface treatment can be a chemical treatment, for example an impregnation, and the surface treatment can also be a physical or mechanical treatment of the surface. By means of the surface treatment, it is in particular possible for the first material to have the same composition as the second material. The surface treatment of the material in the spaces can thus reduce the viscosity and / or the adhesive force. In particular, it is provided that when choosing the equality of the first and second material, the material is ABS (acrylonitrile-butadiene-styrene).

It is particularly preferred that the surface treatment is designed as a surface structuring. During the surface treatment, the surface of the second material is structured in the spaces. For example, the surface structuring is roughening, perforating and / or perforating. The adhesive force and / or the viscosity of the second material is reduced by means of the surface structuring.

One embodiment of the method provides that a blank is formed by performing the first assembly step and the second assembly step several times, in particular also by performing the surface structuring, the surface treatment, the powder application step and / or an intermediate step a number of times. In particular, a blank comprises a plurality of blank layers. For example, a first blank layer is applied in a first pass by means of a first and a second build-up step, with a further blank layer then being applied to the blank layer produced by a further first and second build-up step. In particular, so many blank layers are applied until an entire blank is produced, the blank in particular having and / or comprising the entire component geometry.

One embodiment of the invention provides that the method has a separation step. In the separation step, the auxiliary structure is removed from the blank and / or the blank layer by means of evaporation, by means of decomposition and / or by dissolving the first material. A green body is produced from the blank and / or the blank layer with the first material removed. The green compact has the component geometry and preferably also the same chemical composition as the later component. The first material or the auxiliary structure is dissolved and decomposed, for example, by heating and / or irradiation. The first material can be dissolved by bathing the blank and / or the blank layer in a media bath. For example, the media bath is designed as a water bath, the first material being a water-soluble material and dissolving in the water bath. This embodiment is based on the consideration of providing a method in which a green compact of a component can be produced in a particularly simple, time-saving and / or inexpensive manner.

It is optionally provided that the method has a solidification step. The consolidation step preferably takes place after the separation step, alternatively the consolidation step takes place after the last second assembly step. In the solidification step, the blank, the blank layer and / or the green body are sintered and / or solidified. In particular, the sintering and / or solidification is carried out by thermal treatment of the blank, the blank layer and / or the green body. The sintering step is carried out, for example, by heating the blank, the blank layer and / or the green body to more than eight hundred degrees Celsius, the consolidation step also being able to include the separation step.

Another object of the invention is a manufacturing device for manufacturing the component. In particular, the manufacturing device for carrying out the method is designed as previously described. The production device has a first structural unit, an auxiliary structure with spaces being applied to a carrier by means of the first structural unit. In particular, the first structural unit is designed to carry out a photoelectric printing process. The production device has a second structural unit, a second material being applied into the intermediate spaces of the auxiliary structure by means of the second structural unit. In particular, it can be provided that the first structural unit forms the second structural unit. The second structural unit is designed to apply a second material with a lower viscosity than the first material and / or with a higher adhesive force than the first material. In particular, the production device can have a powder application unit, the powder application unit being designed to apply a powder made of a third material into the intermediate spaces and / or onto the second material. In particular, the manufacturing device comprises the first material, the second material and / or the powder.

• 1 ein Ausführungsbeispiel einer Fertigungsvorrichtung;
• 2 ein Ausführungsbeispiel einer ersten Aufbaueinheit;
• 3 ein Ausführungsbeispiel einer zweiten Aufbaueinheit;
• 4 ein Ausführungsbeispiel einer Pulverauftragungseinheit;
• 5 ein Ausführungsbeispiel einer Pulverabsaugeinheit;
• 6a - 6d; schematisch den Aufbau einer Rohlingsschicht;
• 7a - 7d schematisch den Aufbau einer weiteren Rohlingsschicht;
• 8a - 8d ein Ausführungsbeispiel einer oberflächenbehandelten Materialsch icht;
• 9 ein Ausführungsbeispiel eines Grünlings;
• 10a und 10b schematisch die Herstellung eines Bauteils aus einem Grünling;
• 11 ein weiteres Ausführungsbeispiel einer Fertigungsvorrichtung.

Further advantages, effects and configurations of the invention result from the attached figures and their description. Show:

• 1 an embodiment of a manufacturing device;
• 2 an embodiment of a first assembly unit;
• 3 an embodiment of a second assembly unit;
• 4 an embodiment of a powder application unit;
• 5 an embodiment of a powder suction unit;
• 6a - 6d ; schematically the structure of a blank layer;
• 7a - 7d schematically the structure of a further blank layer;
• 8a - 8d an embodiment of a surface-treated material layer;
• 9 an embodiment of a green compact;
• 10a and 10b schematically the production of a component from a green body;
• 11 another embodiment of a manufacturing device.

1 shows a manufacturing device 1 as an embodiment of the invention. The manufacturing device 1 has a first structural unit 2 and a second assembly unit 3 on. Furthermore, the manufacturing device 1 a heating unit 4 , a powder application unit 5 and a powder suction unit 6 on. The units of the manufacturing device 1 are via a transport unit 7 connected with each other. By means of the transport unit 7 becomes a carrier 8th transported, the carrier 8th from the heating unit 4 to the first assembly unit 2 , to the second assembly unit 3 , to the powder application unit 5 and to the powder suction unit 6 is transported. Transport using the transport unit 7 takes place in the transport direction 9 , The manufacturing device 1 forms a manufacturing device of additive manufacturing. In particular, the direction of transport 9 rectified to a tangential component of the rotations of the assembly units 2 and 3 at the point closest to the transport unit.

2 shows a detail from the manufacturing device 1 , The detailed view shows the first assembly unit 2 , Before the first assembly 2 is the heating unit 4 arranged. The heating unit 4 is for tempering and warming the wearer 8th educated. For example, the carrier 8th irradiated with infrared radiation in the next section, so that the wearer warms up by at least fifty Kelvin. The warmed carrier 8th is in the direction of transport 9 transported further and thus reaches the first assembly unit 2 , The first assembly unit 2 has a photoreceptor roll for photoelectric printing. The PR role 10 is in a direction of rotation 11 turned. The direction of rotation 11 is selected so that it is aligned with the direction of transport 9 is in a closest point. The photoreceptor roll is particularly electrostatically charged. The photoreceptor roll is exposed in sections by means of an illumination unit. The exposure takes place in particular in the form of a negative of the auxiliary structure. On the PR roll 10 becomes a first material 12 arranged. The first material 12 adheres by means of electrostatic interaction. By turning the receptor roll 10 becomes the first material 12 on the carrier 8th transfer. That on the carrier 8th transferred first material 12 forms the auxiliary structure 13 , The auxiliary structure 13 shows gaps 14 on. The auxiliary structure 13 is one in photoelectric printing on the carrier 8th applied structure.

3 shows a detailed view of the second assembly unit 3 , The second structural unit 3 is in the direction of transport after the first assembly unit 2 arranged. The second structural unit 3 also has a PR role 15 on. The PR role 15 is electrostatically charged again. By illuminating the PR roll 15 the photoreceptor role can be partially neutralized. On the PR roll 15 becomes a second material 16 applied. The second material 16 is in particular applied so that it has a structure that is on the carrier 8th located auxiliary structure corresponds. That on the PR roll 15 located second material 16 is in the gaps 14 as a layer of material 17 applied. The transfer takes place so that the photoreceptor role 15 in one direction 18 is rotated and the second material during rotation 16 in the gaps 14 is transmitted. The second structural unit 3 is designed to fill the intermediate spaces of the auxiliary structure with the second material. The filling of the gaps 14 the second material is such that the layer height of the material layers 17 is less than a layer height of the auxiliary structure. The auxiliary structure 13 forms together with the intermediate layer 17 a blank layer 19 ,

4 shows a detailed view from the manufacturing device 1 , the detailed view of the powder application unit 5 shows. Using the powder application unit 5 becomes a powder 20 on the blank layer 19 and especially on the material layer 17 applied. The metal powder is, for example, an aluminum or a steel powder. The Pulverauftragungseinheit 5 a powder container 21 on. In the powder container 21 is the metal powder 20 stored. On the powder storage container 21 there is an application nozzle 22 , by means of which the powder 20 in accelerated form, for example as a powder jet, on the blank layer 19 and on the material layer 17 can be applied.

That on the material layer 17 applied powder 20 combines with the second material of the intermediate layer. In particular, the powder penetrates 20 at least partially into the second material and is bound by the second material. For example, the powder 20 matrix-like in the second material of the intermediate layer 17 entered. powder 20 which strikes the intermediate layer and / or the first material is not bound by it and is loosely deposited on it. According to the method, it is particularly provided that the carrier 8th and the auxiliary structure 13 by means of the transport unit 7 on the powder application unit 5 is moved past so that all layers of material 17 can be provided with powder.

5 shows a detailed view of the manufacturing device 1 , this detailed view showing the powder suction. The powder suction unit 6 is trained powder 20 suction, which is on the auxiliary structure 13 is deposited and / or powder 20 suck off which is not from the material layer 17 was bound. The suction takes place with a force that enables the powder 20 to remove completely. In particular, this step serves to recycle the powder 20 ,

The 6a . 6b . 6c and 6d show schematically the sequence of the method. In 6a in a first construction step, a first material in the form of an auxiliary structure 13 on the carrier 8th applied. The first material is applied as an auxiliary structure in a photoelectric printing process. The first material is designed as a polymer, in particular as a water-soluble polymer. The auxiliary structure 13 shows gaps 14 on. The gaps are in particular of different sizes. The auxiliary structure 13 and / or the gaps 14 reproduce the shape of the component to be manufactured, in particular in a cross section.

6b shows a blank layer 19 , In 6b the second construction step has already been carried out. In the second construction step, a second material is placed in the spaces 14 the auxiliary structure 13 applied. The application of the second material as a material layer 17 takes place so that the layer height of the material layer 17 is less than the layer height of the auxiliary structure 13 , In particular, the material layer fills 17 the gaps 14 completely in the direction of transport.

6c shows the blank layer 19 out 6b , the blank layer already with a powder 20 was irradiated. The powder is irradiated in the powder application step. By powder application of the powder 20 the powder from the first material and / or from the material layer 17 bound in the gaps. powder 20 However, which rests on the auxiliary structure is unbound and can be removed by suction.

6d shows the blank layer 19 , here already the powder 20 was sucked off and only powder in the spaces 17 is bound. The spaces include a mixture of second material and bound powder 20 ,

The 7a . 7b . 7c and 7d show the application of a further blank layer 19 on an existing blank layer 19 , In 7a is on an existing blank layer 19 a further auxiliary structure in a first construction step 13 applied in a photoelectric printing process. The on the existing blank layer 19 applied auxiliary structure 13 has a different geometry and in particular differently dimensioned spaces 14 ,

7b shows the application of a layer of material 17 on an existing blank layer 19 , The material layer 17 fills the gaps 14 the one on the blank layer 19 applied auxiliary structure 13 , The top auxiliary structure 13 forms together with the material layer 17 another blank layer 19 , The further blank layer 19 is on the first blank layer 19 applied.

7c shows applied powder 20 to those in the 7a and 7b shown further blank layer 19 , The powder 20 in the gaps 14 from the material layer 17 bound. The powder 20 on the auxiliary structure 13 is free again.

7d shows the two blank layers 19 that are arranged on top of each other. The powder 20 which is not from a layer of material 17 was bound, and / or which is on the auxiliary structure 13 was suctioned off. In particular, it can be provided that further construction steps follow, so that a plurality of blank layers 19 are applied and a blank is produced.

The 8a . 8b . 8c and 8d show a detailed view of a surface-treated material layer 17 , 8a shows a side view. In the gaps 14 the auxiliary structure 13 is the material layer 17 arranged. The material layer 17 is from a second material. The auxiliary structure 13 is made of a first material. In particular, the first material and the second material can have the same chemical composition. The material layer 17 is surface-treated, and in this exemplary embodiment surface-structured. The structuring is to reduce the viscosity and to increase the adhesion of the second material. The surface structuring is carried out in particular by segmentation and / or structuring or a density differentiation in the direction of transport 9 ,

8b shows a top view of the auxiliary structure 13 and the layers of material 17 out 8a , The structuring is again in the transport direction 9 formed, the density differences in a perpendicular to the direction of transport 9 and in a plane parallel and / or rectified to the carrier 8th are constant.

8c shows a detailed view of the material layer 17 , The material layer 17 is structured in a matrix, in particular lattice-like. The lattice-like structuring of the material layer 17 leads to cup-shaped depressions 22 ,

8d shows a detailed view of the lattice structure 8c , here already the powder 20 is applied. The metallic powder 20 is in the wells 22 held.

9 shows a green body 23 , The green body 23 is available from the blank by dissolving or decomposing the intermediate structure and / or the first material. The first material is preferably dissolved and / or decomposed in the separation step. For this, the blank is treated in a media bath. For example, the blank is bathed in a water bath, the first material dissolving in the water bath. Alternatively, the blank can also be treated thermally and heated to a decomposition temperature of the first material, the first material thus decomposing, evaporating and / or subliming. The green body 23 shows in particular the geometry of the component 24 ( 10b) on.

10a shows schematically a way to carry out the solidification step. The green compact 23 in an oven 25 thermally treated. The thermal treatment of the green body 23 leads to a sintering of the metallic powder. When solidifying and / or sintering the green body 23 volume reduction occurs in particular.

10b shows the component 24 how it from the green compact 23 was obtained in the solidification step. The geometry and / or contour of the component 24 corresponds to the geometry and / or the contour of the green compact 23 , however, the component is 24 shrunk and / or reduced compared to the green body.

11 shows an alternative embodiment of the manufacturing device 1 , The essential components of the manufacturing device 1 out 1 are taken over. The manufacturing device 1 includes the heating unit again 4 , the first structural unit 2 , the second structural unit 3 , the powder application unit 5 and the powder suction unit 6 , In addition, however, is between the first assembly unit 2 and the second structural unit 3 a plasma pretreatment unit 26 arranged. The plasma pretreatment unit 26 is used in particular to treat the intermediate structure. The manufacturing device further comprises 1 a second heating unit 27 , The second heating unit 27 is after the second assembly unit 3 arranged. By means of the second heating unit 27 becomes the material layer 17 solidified and / or surface treated. For example, by means of the heating unit 27 the surface of the intermediate layer 17 be heated so that it easily melts and / or liquefies, whereby on the melted and liquefied material layer 17 the powder 20 is applied.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 20170157849 A1 [0003]

Claims (15)

Method for producing a component (24), with a first assembly step and a second assembly step, an auxiliary structure (13) made of a first material (12) being applied to a carrier (8) in the first assembly step by means of a photo-electric printing process, wherein the auxiliary structure (13) has and / or forms gaps (14), wherein in the second assembly step a second material (16) is applied as a material layer (17) into the gaps (14) by means of a photo-electric printing process, characterized that the second material (16) has a lower viscosity and / or higher adhesive force than the first material (12). Procedure according to Claim 1 , characterized in that the auxiliary structure (13) has a first layer height and the material layer (17) has a second layer height, the first layer height being greater than the second layer height. Procedure according to Claim 1 or 2 , characterized by a powder application step, a powder (20) of a third material being applied to the material layer (17) in the powder application step, the powder (20) sinking at least partially into the material layer (17) and / or at least partially from the second material (16) is bound in the material layer (17). Procedure according to Claim 3 , characterized in that the auxiliary structure (13) and the material layer (17) form a blank layer (19), the powder (20) being applied to the blank layer (19). Procedure according to one of the Claims 3 or 4 , characterized in that the powder (20) is applied by means of pressure and / or by means of spraying. Procedure according to one of the Claims 3 to 5 , characterized in that the powder (20) comprises a metal powder. Procedure according to one of the Claims 3 to 6 , characterized in that the powder (20) comprises powder grains, the powder grains having an equivalent diameter smaller than the second layer height. Procedure according to one of the Claims 3 to 7 , characterized by a powder removal step, excess and / or unbound powder (20) being removed in the powder removal step. Procedure according to one of the Claims 3 to 8th , characterized in that the binding of the powder (20) by the second material (16) is based on mechanical anchoring, chemical bonding, diffusion and / or pseudodiffusion and / or generally on adhesion. Method according to one of the preceding claims, characterized by a surface treatment of a surface of the material layer (17) to increase the porosity and / or adhesion. Procedure according to Claim 10 , characterized in that the surface treatment is designed as a surface structuring. Method according to one of the preceding claims, characterized in that a blank is formed by repeatedly executing the first and the second assembly step. Method according to one of the preceding claims, characterized by a separation step, the auxiliary structure (13) being removed from the blank and / or the blank layer (19) by means of evaporation, decomposition and / or dissolution of the first material (12) and a green body in the separation step (23) is formed. Method according to one of the preceding claims, characterized by a solidification step, the blank, the blank layer (19) and / or the green body (23) being sintered and / or solidified in the solidification step. Manufacturing device (1) for producing a component (24), in particular for carrying out the method according to one of the preceding claims, characterized by a first assembly unit (2) for applying an auxiliary structure (13) with gaps (14) by means of a photo-electric printing process by a second assembly unit (3) for applying a second material (16) with a lower viscosity than the first material (12) and / or with a higher adhesive force than the first material (12) in the intermediate spaces (14).

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