WO2018134033A1

WO2018134033A1 - System and method for the additive manufacture of at least one component

Info

Publication number: WO2018134033A1
Application number: PCT/EP2017/084618
Authority: WO
Inventors: Ömer AYDIN; Heinz Pilz
Original assignee: Siemens Aktiengesellschaft
Priority date: 2017-01-19
Filing date: 2017-12-27
Publication date: 2018-07-26
Also published as: DE102017200825A1

Abstract

The invention relates to a system (11) for the additive manufacture of at least one component, comprising at least one storage container as a first container (10) for receiving material (14) for producing the component (34), at least one support element (31), at least one conveyor device (35) that is used to move the material from the storage container onto the support element (31) in order to thereby form a material bed (32), from which the component (34) can be produced, from the material moved on the support element, and at least one second container (20), by means of which excess material (24) can be collected upon moving the material (14) from the storage container onto the support element (31). The invention is characterized in that the second container (20) is designed as a second storage container which is paired with the conveyor device (35) and by means of which the material (24) collected by means of the second storage container can be moved from the second storage container onto the support element (31).

Description

description

Plant and method for the additive production of at least one component

Such a system and such a method are already known from CN 102274968 A. The system has at least one storage container, in which material for producing a component can be received or received. By means of a conveyor, the material from the reservoir and on a trained example as a plate carrier ^¬ element of the system is moved, in particular applied. For this purpose, for example, a distribution element, in particular a slider is used. By moving the material on the carrier element, a material bed is formed on this, from which the component, in particular in layers, is produced.

Furthermore, the system has a second container as a collecting or overflow container, by means of which when moving the

Material is collected from the reservoir on the support member over ^¬ schüssiges material. The material may be in ^¬ play powder which is applied by means of the distributing as a thin layer on the base acting as a support member. For this purpose, the slider is guided linearly over the example designed as a building board carrier element. In this case, excess material that does not come to rest on the carrier element is pushed, for example, into the collecting container and collected by it.

Object of the present invention is, a system and a method of the type mentioned ^{weiterzuent ¬} wrap that the component can be made particularly time-consuming and inexpensive.

This object is achieved by a system having the features of patent claim 1 and by a method having the features of patent claim 14. Advantageous embodiments with expedient embodiments of the invention are specified in the remaining claims.

A first aspect relates to a system for the additive production of at least one component. The system has at least one storage container for receiving material for producing the component. In other words, in the supply container ^¬, ^¬, the material is made of which at least produce a part of the component or is produced, received and thus stored, in particular latched to. In this case, the reservoir is a first container of the system or is also referred to as the first container. The on ^¬ position further comprises at least one support element, which may be formed as a plate and can also be referred to as a building board or table.

In addition, a conveyor is provided, by means of which the material from the reservoir to the Trägerele ^¬ element is movable, thereby to form from the moving material on the carrier element, a material bed from which the component is produced. In other words, or the bed of material is formed at least from an initially received in the Vorratsbe ^¬ container first part of the recorded material in the reservoir, by at least the first portion of the material moves from the hopper to the Trägerele ^¬ ment or is promoted. Thus, the first part forms the material bed. At least a second part of the mate rials of the ^¬ residing on the support element material ^¬ bed, the component is then prepared.

The plant furthermore comprises at least one second Be ^¬ container, by means of which during the movement of the material from the reservoir to the excess carrier element Ma ^¬ TERIAL is trappable. For example, for the above mentioned first part comprising first and accommodated in the container Vorratsbe ^¬ total amount of material is moved to the carrier ^¬ element, but only the first part of the total ^¬ amount remains on the carrier element. One of the first Part different subset of the total amount of material does not come to rest on the support element and thus does not form the material bed, but is the aforementioned über ^¬ schüssige material and is collected by the second container, since the excess material, for example by means of the conveyor into the second container moved, in particular promoted, is.

In order to be able to produce the component in a particularly timely and cost-effective manner, it is provided according to the invention that the second container is designed as a second storage container. In this case, the conveying device is not only assigned to the first container, but also to the second container, so that by means of the conveyor the material collected by the second storage container and thus initially over ^¬ schüssige and recorded in the second container material from the second reservoir to the support element is movable ^¬ bar. Thus, a portion of the first over ^¬ schüssigen and accommodated in the second container Materi- can be used as at least, in order to form at least a part of the material bed.

Since both material from the first container and material from the second container on the carrier element can be applied by means of the conveyor, it is not necessary, for example, to move the second reservoir relative to the first reservoir or to replace the first reservoir against the second reservoir. The storage containers may remain stationary, in particular during the manufacture of the component. By means of the conveying device, the material received in the second storage container and collected by the second storage container can be moved out of the second storage container onto the carrier element without the second storage container itself, in particular relative to the carrier element and / or relative to the first storage container have to. Additive manufacturing is a generative manufacturing process such as rapid prototyping. For example, the material is a powder, so that the mate ^¬ rialbett is a powder bed. In particular, by means of an energy giestrahls such as a laser beam is at least ^¬ the above-mentioned second part of the bed of material bil ^¬ Denden material melted, thereby producing at least a first layer of the component. Subsequently, for example, the carrier element and thus the first layer, in particular in a material bed chamber, are lowered, and at least one further part of the material from one of the storage container is applied to the carrier element and in particular to the first layer. Then, for example, the further part is melted by means of the energy beam, whereby a second layer of the component is produced and connected to the first layer. This procedure is repeated to ^¬ particular depending on the number of layers of the component to be produced more than once, so that the component schichtwei ^¬ se is prepared from a plurality of successively arranged layers. The particular material from which the depending ^¬ stays awhile layer is formed is applied, for example, within the framework of men ^¬ application process to the carrier element, as well as to an optionally already prepared before each application process layer.

Usually, per layer or per application process more material, in particular powder, and Example provided ^¬ as to respectively move in the direction of the carrier element, as is actually required for the production of the respective, for example, thin layer. The respective excess Materi ^¬ al, which then does not remain in the material ^bed or on the carrier ^¬ element is usually spent in the second container. Conventionally, the second container acts merely as an overflow container, which has no other function than the collection of the excess material. This leads to the fact that the production of the component must be completed before the material in the first container is used up, resulting in a particularly large required receiving capacity. capacity and thus lead to high costs of the first container. Furthermore, it is conceivable to interrupt the production and to refill further material into the first container, which, however, would lead to a time-consuming and thus cost-intensive production of the component.

These problems and disadvantages can now be avoided by means of the erfindungsge ^¬ MAESSING system, since the material from the second container, in particular directly, that is, without having to first fill the material from the second container into the first container, moves onto the carrier element can be. Thus, it enables the installation of the invention, to make the material available in the system so useful that there ^¬ is realized through more setup time and production volume than in conventional systems chen. By using the second container not only as a collecting container, but also as a storage container, the material can be used during the manufacture of the component far reaching. Typically, material that is located in the acting as an overflow container ^¬ second container can not be used further without interruption of the production. Such an interruption of the production can be avoided now that the material from the second container applied without going through the first container to the carrier element and can be used with ^¬ for producing the component. The invention is thus based on the idea to use the conventionally provided and already used for use second container as a second reservoir, which plays the same function as the first reservoir.

At least one of Vorratsbe ^¬ container, a sieve for sieving the material therefore is associated according to the invention. By sieving the material to be introduced into the container as the overflow container, a consistently high quality of the building material is ensured, whereby the rejects during production can be kept as low as possible. In particular, this embodiment may be particularly advantageously with an embodiment, which lines to a bulk element, combined

(see more below). In a further embodiment of the invention, the screening element has at least two superposed sieves or Siebgit ^¬ ter, which differ from each other in their respective opening or mesh size. As a result, a particularly high quality of the material to be reused can be realized.

In an advantageous embodiment of the invention, the sieve element is assigned a vibrating unit, by means of which the sieve element can be vibrated relative to the at least one storage container. This vibrating unit can be designed as a vibration ^¬ unit. By shaking or vibrating the screen element, the material can be screened quickly and beneficial ^¬ way. Another embodiment is characterized in that the sieve element can be associated with a suction device for the suction of particles. The suction device can be arranged above and / or below and / or laterally of the sieve element. By sucking off the particles clogging of the screening is counteracted, whereby unwanted interruptions of operation of the system can be avoided. In particular can be realized in a particularly long time ^¬ span, during which can be the plant, in particular ^¬ sondere interruption, operated and thus len for manufacturing the component and / or shared by multiple components. In other words, for example, the number of required for maintenance and / or cleaning operations interruptions of the system can be kept particularly low or components can be constructed with significantly larger volume without interruption with significantly reduced material usage. In an advantageous embodiment of the invention, the first container is also designed as a collecting container, in addition to its capacity as a storage container. Thus, this excess material, which is brought from the second reservoir to the support member auffan ^¬ gene. Due to the fact that at least the two containers can act alternately as a supply and overflow container, a very efficient use of the material is guaranteed.

A further embodiment is characterized in that the conveyor has at least one arranged in the first reservoir and relative to the first reservoir translationally movable piston, by welhern the material from the first reservoir is conveyed. The piston represents a particularly effective and low maintenance ^¬ possibility in the promotion of the material.

In an advantageous embodiment of the invention, the delivery device has at least one piston arranged in the second storage container and translationally movable relative to the second storage container. By means of this piston is collected by the second reservoir Ma ^¬ TERIAL conveyed from the second reservoir. The piston in the second container is different from and provided in addition to the piston in the first container. The same applies to the piston in the second reservoir for the efficiency and maintainability as for the piston in the first Be ^¬ container.

In an advantageous embodiment of the invention, at least a distribution element, for example a slide pre ^¬ see which of the reservoirs is movable relative namely in translation in a first direction, to thereby move the material from the first reservoir to the carrier element. In this case, for example, a certain amount of the material is applied by means of the slider as the uppermost layer on the carrier element. The distribution element is in one of the first direction opposite second direction also translationally movable to thereby move the material from the second reservoir to the support member can. The distribution element can also be designed such that it is freely movable in a plane which runs perpendicular to a growth or assembly axis along which the component is produced or, in particular in layers, is built on ^¬ . With a distribution element formed in this way, the reciprocal operation of the containers as storage and overflow containers is particularly easy to implement.

In a further embodiment of the invention, the system has at least one, at least temporarily, in the vertical direction above the support element arranged bulk element. The ^pouring element is suitable for ^applying the material to the support element, which can be distributed there by means of the distribution element. The pouring element can be designed so that it is also freely movable in a plane perpendicular to the said growth axis of the component. Furthermore, it is designed so that it can be supplied with material from the respective pre ^¬ storage containers.

For example, the bulk element to a receiving area for receiving the material and at least one opening acting as a bulk passage opening which ^¬ example, a hand in the receiving area and on the other hand, gives out into the environment of the bulk element. The material, for example, first received in the receiving area can flow or be poured through the passage opening. As a result, from the pouring element, in particular by means of

Gravity or due to gravity, new material to be poured or deposited through the passage opening on the support element and / or in front of the distribution element, whereupon, for example, the discharged material by means of

Distributor can be moved to the support element.

Through the use of the bulk element, the material can be applied DERS ^¬ particular time low on the carrier element. In an advantageous embodiment of the invention are to the material from the respective reservoir the

To be able to supply bulk material, the storage container via respective lines through which the material from the storage containers can be conveyed through, connected to the pouring element, which is supplied via the lines with the material from the storage containers. By means of this embodiment, further time can be saved in the distribution of the material.

In a further embodiment of the invention, at least one conveying element per line is provided, which promotes the material from the respective reservoir through the respective line through to the pouring element. In this way ne particularly fast and cheap promoting mate ^¬ rials through the lines to the pouring element is possible egg.

In an advantageous embodiment of the invention, at least one of the reservoir is associated with at least one sensor, by means of which a level of the material in the at least one reservoir can be detected. The fill level characterizes or describes an amount of material received in the at least one storage container. Here ^¬ by, for example, at least one component of the plant-ge operable particular controlled or regulated in dependence on the detected level. The at least one sensor can be connected to one example, as control denote ^¬ th electronic computing means of the system, so that by means of the electronic computing means in dependence on the detected level is at least a component of the system operable, particularly controllable or regulable. The at least one component comprises, for example, the conveying means, the respective conveying element and / or the distribution element, so that for example in dependence on the respective level material from each container moves on the support member who can ^¬. As a result, for example, an overfilling of the container can be avoided. Furthermore, by the Level control angege ^¬ efficient operation of the plant.

A second aspect of the invention relates to a method for the additive production of a component, in particular by means of egg ^¬ ner system according to the invention. In the method, at least one storage container is used as a first container for receiving material for producing the component, at least one carrier element and a conveyor, by means of which the material is moved from the storage container to the carrier element. Thereby, a material bed formed of the moving element to the Trägerele ^¬ material from which the component is manufactured. In addition, at least one second container is provided, by means of which excess material is collected when the material is moved out of the storage container onto the carrier element.

In order to now the component to herstel ^¬ len particularly time-consuming and inexpensive, it is inventively provided that the second container is formed as a second reservoir, which is assigned to the conveying device by means of which, after moving the material from the first reservoir to the carrier element the captured by the second Vorratsbehäl ^¬ ters material is moved from the second reservoir to the support element. Advantages and advantageous embodiments of the first aspect of the invention are to be regarded as advantages and advantageous embodiments of the second aspect of the invention, and vice versa. In the method according to the invention, for example, the second container may serve as an overflow container in a first step of the method. In the case of at least one second step of the method following the first step, the second container can assume the function of the second storage container, in particular by using the conveying device assigned to it, since material moves from the second container onto the carrier element by means of the conveying device in the second step can be used to increase the material to form albett. It is also conceivable that the first Be ^¬ container, which functions as a reservoir in the first step, in the second step acts as a second collecting container or overflow.

Embodiments of the invention are explained in more detail below with reference to schematic drawings. It shows:

1 shows a schematic representation of a first embodiment of a plant according to the invention for additive manufacturing;

2 shows a schematic representation of a second embodiment of the plant according to the invention for additive manufacturing; and

3 shows a detail of a schematic representation of a third embodiment of the system according to the invention.

1 shows a schematic representation of a first embodiment of a system 11 for the additive production of a component 34. The system 11 has a base element 30, which is also referred to as a machine table. The system 11 further comprises a first container 10, which is designed as a storage container. The container 10 has a chamber 19, which is for example at least substantially cylindrical. The container 10, in particular its chamber 19, which is also referred to as a storage chamber, serves to receive material 14, from which - as will be explained in more detail below - the component 34 is produced. The material 14, which is also referred to as a building material, may be a powder in the example shown. For example, the container 10, in particular reversibly detachable, held on the base member 30.

The system 11 also has a support element 31, which is also referred to as a building board or building platform and, in particular movable, is at least indirectly held on the Basisele ^¬ ment 30th Furthermore, the system 11 comprises a conveying device 35, by means of which the material 14 from the container 10 is movable, in particular applicable, to the carrier element 31, thereby forming a material bed 32 from the material 14 moving on the carrier element 31. From the material bed 32 or at least from a part of the Materi ^¬ albett 32 forming material 14, the component 34 is Herge ^¬ provides.

Herfür includes the conveyor 35 comprises a piston 13 which is arranged to be translationally movable in the first container 10 and thus along a direction of movement illustrated by a double arrow 21 relative to the container 10 is movable. The piston 13 is connected to a piston rod 12 and driven via the piston rod 12 and thereby movable along the direction of movement relative to the container 10. As can be seen from FIG. 1, the material 14 received in the container 10 is supported on the piston 13, so that the material 14 can be moved out of the container 10 or out by the piston 13 along the direction of movement towards an opening 25 of the container 10 is moved. This allows the material 14 by as

Through opening formed opening 25 is moved through and thus moved out of the container 10.

Furthermore, the conveying device 35 comprises a distribution element 36 designed, for example, as a slide, which can be moved back and forth in a translatory manner along a second movement direction illustrated by a double arrow 27, in particular relative to the container 10. Thus, for example, the distributor element 36 based on the basis of an embodiment shown in FIG 1 starting position along the second movement direction moved away onto the image plane to the right or in the direction of the support element 31 and in particular on the carrier ^¬ element 31, according to which at least a part of the Ma ^¬ terials 14 was moved out of the container 10 in the manner described by means of the piston 13, so is the moved out moving part by means of the distribution element 36 on the support member 31, in particular pushed.

The system further comprises at least one second container 20, which can act as a collecting container, by means of which when moving the material 14 from the container 10 to the support member 31 excess material 24 is trappable. When moving the said member on the support member 31 remains, for example, a first subset of the part on the support member 31 and forms the material ^¬ bed 32. A different from the first subset, second subset of said part, however does not remain on the support member 31 but is by means of

Distribution element 36 via the support member 31 and, for example over the material bed 32 away to the and in particular in the second container 20 moves, in particular conveyed or pushed, the second subset is the excess material 24, which by means of the collecting container (Behäl ^¬ ter 20) is caught.

At least a first part of the material bed 32 forming ^¬ first subset of at least a first layer of the component 34 is then produced by additive manufacturing. In this case, for example, by means of at least one energy beam, in particular by means of a laser beam, at least the second part of the material bed 32 is melted. From the molten, formed for example as a powder second part is formed by solidification during cooling, the first layer of the component.

Of Figure 1, that the formed, for example, as a piston support element 31 movable translationally added to ei ^¬ nem third container 33 and along a third, illustrated by a double arrow 28 direction of movement is movable in translation relative to the container 33 can be seen. In this case, the third direction of movement runs parallel to the first direction of movement, the second direction of movement perpendicular to the first and to the third direction of movement. running. The carrier element 31 is via connected to the Trä ^¬ gerelement 31 piston rod 37 can be driven and thus movable along the third direction of movement in translation relative to the container 33rd

For example, after forming the first layer, the carrier element 31 is lowered along the third direction of movement and thus moves from an opening 29 of the container 33 away ^¬ so that the first layer produced or already produced regions or layers of the component 34 can be lowered into the container 33 , Then, for example, with ^¬ means of the conveyor Another material from which the component 34 is made to be on the support member 31, and in particular ^¬ sondere to the first layer, is applied and melted onto the described manner, thereby forming a second on the first layer Layer of the component 34 is produced. In this way, the component 34 may consist of several, will ^¬ stacked layers and thus layers prepared. After the production, the component 34 can be removed, for example, from the container 33.

In order to now, the component 34 forth to provide ^¬ particularly time-consuming and cost-effective, the second container 20 is formed as a second reservoir, whereby the second container 20, the conveyor 35 is assigned by means of which the trapped by the second reservoir to ^¬ next excess material 24 from the second Vorratsbe ^¬ container on the support member 31 is movable. For this purpose, the conveyor 35 has a piston 23, which in the second reservoir (container 20)

arranged translationally movable and thus along a direction illustrated by a double arrow 15 fourth movement direction relative to the container 20 is movable. In this case, the fourth direction of movement runs parallel to the first and third directions of movement. The piston 23 is connected to a piston rod 22 and driven via the piston rod 22 and thereby along the fourth direction of movement movable relative to the container 20. As can be seen from FIG. 1, the material 24 collected by the container 20 and ^{thus accommodated} in the container 20 is supported on the ^piston 23, so that the material 24 can be moved out of the container 20 or conveyed out by the container Col ^¬ ben 23 along the fourth direction of movement toward an opening 17 of the container 20 is moved. Thereby moved through the opening formed as a through Publ ^¬ voltage 17, the Ma ^¬ TERIAL 24 and thus out of the container 20

be moved out.

In the previously described, caused by the distribution element 36 moving the material 14 on the support member 31, the distribution element 36 is moved, for example, via the container 20 and the opening 17 away in a second starting ^¬ position. In the first starting position, for example, is located the distributor 36 on a the Trägerele ^¬ element 31 side facing away from the opening 25, and then to move the moved out through the opening 25 from the container 10 material 14 on the carrier element 31st

In the second starting position is the

Distribution element 36 on a side facing away from the support member 31 of the opening 17. Will then, for example, the

Distributing element 36 starting obtained from the second starting position along the second movement direction on the image plane to the left or in the direction of the support member 31 and, for example, again moved back to the first output Stel ^¬ lung and in particular on the support member 31 hinwegbe-, after the at least one third portion of the material 24 has been moved in the described manner by means of the piston 23 from the loading ^¬ container 20, the moved-out drit ^¬ te part is moved on the support element 31 by means of the distributing element 36, in particular pushed.

When moving said third part onto the carrier element 31, for example, a third subset of the third part remains on the carrier element 31 and forms the material. albett 32. However, a fourth subset of the third subset, which is different from the third subset, does not remain on the carrier element 31, but rather is transported by means of the distributing element 35 via the carrier element 31 and, for example, over the material bed 32 to the container and in particular into the container 10, moving in particular conveyed or ge ^¬ pushed, and then the fourth subset excess mate rial is ^¬, which is then collected by means of, as a second ter Auffangbehäl- acting Behälterss 10th Then, for example, in the manner described above from the Mate ^¬ rialbett 32, the second layer can be produced. Following this, as described above with regard to the production of the first layer, material can be moved out of the container 10 onto the carrier element 31, in order then to produce a third

Layer of the component 34 produce.

Overall, it can be seen that a total of the container 10 and the container 20 to act in the course of manufacture of the component 34 from ^¬ partly as a storage and collection container, so that the component 34 may be made time-consuming and cost-effective. In particular, excess material, which is collected in a production step by means of the respective container, in a subsequent manufacturing step from the second container 20 and from the container 10 on the support member 31 moves and for producing a

Layer can be used without moving between the Herstellungsschrit ^¬ th the second reservoir relative to the first container 10 and without exchanging the first container 10 against the second reservoir, that is, without having to interrupt the production of the component 34. Thus, for example, the second reservoir stationary lead-ben ^¬. For example, the second reservoir (tank 20) disposed at a position, wherein by means of the conveying device 35, the 24 listed ^¬ means of the second reservoir collected material from the second reservoir to the

Carrier element 31 is movable without moving the second Vorratsbehäl ^¬ ter from the point or while the second reservoir at the point, in particular stationary, remains. The third direction of movement coincides, for example, with a growth or production direction, along which the layers of the component 34 are arranged on one another and the component 34 is produced. As a result, the construction ^¬ part 34 can be made very timely. Example ^¬ example extends in the direction of growth on a horizonta ^¬ len plane stationary system 11 at least substantially vertically.

The respective container 10 or 20, a sensor 16 or 26 for detecting a respective level of the respective, in the respective container 10 and 20 arranged material 14 and 24 respectively assigned. The respective sensor 16 or 26 is connected to an electronic computing device 18 of the system 11, which is designated, for example, as a controller, so that at least one component of the system 11 can be operated, in particular controlled or regulated, by means of the electronic computer as a function of the detected fill level. The at least one component is at ^¬ play to the conveyor 35, the respective pistons 13 and 23 and / or the distributing 36th

In particular, a change operation of the system 11 can be represented, since the containers 10 and 20 act alternately as a storage and collecting container. For example, the container 10 is used as a storage container and the container 20 as a collecting container until no material or only a very small amount of material 14 is accommodated in the container 10 and / or until the container 20, in particular fully ^¬ constantly, filled with material 24. This can be detected by means of the Sen ^¬ sensors 16 and 26. The building material can be characterized, that the excess material 24 is put again as Ausgangsmateri al ^¬ available to be used efficiently. 2 shows a second embodiment of the system 11. The second embodiment differs in particular because ^¬ through from the first embodiment in that at least a bulk element 38 is provided. The pouring element 38 is, at least temporarily, in the vertical direction on the Trä ^¬ gerelement 31 can be arranged. The pouring element 38 is formed from this ^¬, the building material on the support member 31 aufzubrin ^¬ gene by the building material by gravity from the pouring element 38 to the support member 31 is poured. Alterna ^¬ tively or additionally, it is grateful to pour the building material by means of the shaking element next to the support member 31 and then move by means of the distribution element 36 on the support element, in particular to push.

The pouring element can be designed so that it is free to move in a plane which runs perpendicular to the growth axis of the component 34. Furthermore, the pouring element 38 is designed, for example, such that it can be supplied with the material 14 or 24 from the respective containers 10 and 20. To accommodate this material 14 and 24, the pouring element 38 may be a receiving portion having the pouring element 38 comprises at least one as a pouring opening fun ^¬ gent through hole 39 which, for example, on the one hand into the receptacle portion and the other hand to the surrounding ^¬ bung of the pouring element 38 opens. This allows the first recorded in the receiving area building material via the through-hole 39 by gravity to a total dividend from the Aufnahmebe ^¬ rich and out of the pouring element 38th

The pouring opening is formed for example as a narrow opening from ^¬ through which the building material, in particular flows through gravitational effects, in the direction of the base member 30, and in particular the carrier element 31st The deposited so on Trä ^¬ gerelement 31 and the base member 30 is a building material, for example, moved by means of the distributing element 36 to the support member 31 and distributed on the latter.

In order to supply the pouring element 38 with the material 24 from the container 20, for example, at least one line 40 is provided which is connected to the pouring element 38 and to the container 20. Via the line 40, the material 24 can be supplied from the container 20 to the pouring element 38 become. The material 24 can be conveyed through the line 40 and thereby conveyed to the pouring element 38, so that the pouring element 38 can be supplied via the line 40 with the material 24 from the container 20. The previous and following statements on the conduit 40 and the container 20 can be readily transferred to the container 10. Thus, for example, at least one further line, not shown in FIG. 2, is provided by means of which the material 14 is to be guided out of the container 10 to the pouring element 38.

In addition, a conveying member 42 may be vorgese ^¬ hen at least by means of which the material 24 from the container 20 is conveyed through line 40 to the bulk element 38th For example, the conveying element is designed as a pump or as a suction ^¬ device.

3 shows a detail of a third embodiment of the system 11 using the example of the container 10 or 20. In the third embodiment, the respective container 10 or 20 is associated with a sieve element 44, by means of which the Baumateri ^¬ al, which via the respective opening 25 and 17 introduced into the container per ^¬ weiligen 10 and 20, respectively, can be screened. To assist in the screening, the screening element 44 may for example comprise a plurality of stacks of superposed screen mesh having different mesh sizes and / or the screen member 44 46 may be supplied ^¬ assigns a vibrating unit, which shakes the screen element 44 relative to the container and / or vibrates. Material, in particular particles, which remains lying on the screen element 44, since it does not have the material properties to pass through the screen element 44 and enter the container 10 or 20, can contribute to the screen element 44 working all the more inefficiently. the more material that accumulates on it. Therefore, the system 11 can have at least one suction device 48 assigned to the sieve element 44, by means of which the material, in particular the particles or the powder which can not pass through the sieve, is sucked off. The suction device 48 For example, it can be arranged above and / or below and / or next to the screen element 44. The electronic computing device 18, which is linked, for example, to the sensors 16 and / or 26 in such a way that signals between each can be exchanged between the sensor 16 or 26 and the computing device 18, can also be used to control or regulate the vibrating unit 46 and / or the suction device 48 are used. For example, an additional sensor (not shown) could record or process or measure a degree of contamination of the sieve element 44. This

Sensor could bring additional information, not only on the operational readiness of the system 11, but also on the quality of the supplied during processing material 11 and 24, respectively.

For example, the screen element 44, the suction device 48 and the vibrating unit 46 respective components of the system 11. In this case, the respective component may be associated with a suitable mechanism that allows the respective as required in or out of a filling area, in particular relative to the To pivot base element, fold or shoot ^¬ ben. Such a mechanism is then preferably also operated via sensors and a controller.

Claims

claims

1. Plant (11) for additive manufacturing at least one construction ^¬ partly, with at least one reservoir as a first Behäl- ter (10) for receiving material (14) for manufacturing the component (34), with at least one carrier element (31), with a conveying device (35), by means of which the material from the storage container can be moved onto the carrier element (31) in order thereby to form a material bed (32) from the material moving on the carrier element, from which the component (34) can be produced is, and with at least one second container (20), by means of which when moving the material (14) from the reservoir to the carrier element (31) excess material (24) can be collected, wherein the second container (20) is designed as a second reservoir , wherein the conveyor (35) is associated, by means of which the trapped with ^¬ means of the second reservoir material (24) from the second storage container on the carrier element (31) bewegb ar is,

characterized,

in that at least one of the storage containers formed by the first container (10) and the second container (20) is assigned a sieve element (44) for sieving the material (14, 24) to be introduced into the at least one storage container.

2. Plant (11) according to claim 1, characterized in that the sieve element (44) for sieving the at least one reservoir to be introduced material (14, 24) at least two superposed sieves, which differ in their respective mesh size from each other ,

3. Plant (11) according to claim 1 or 2, characterized in that the sieve element (44) is assigned a vibrating unit (46), by means of which the sieve element (44) is to be shaken relative to the at least one storage container.

4. Plant (11) according to claim 1, 2 or 3, characterized in that the screening element (44) is associated with a suction device (48) for the suction of particles.

5. System (11) according to one of the preceding claims, ^¬ characterized by that the first container (10) is designed as In ^¬ collecting container, by means of which during the movement of the material (24) from the second reservoir to the carrier element (31) excess material is trappable.

6. Plant (11) according to any one of the preceding claims, ^¬ characterized in that the conveyor (35) wenigs ^¬ least one arranged in the first reservoir and relative to the first reservoir translationally movable piston (13), by means of which the material (14) from the first reservoir is conveyed.

7. Plant (11) according to any one of the preceding claims, ^¬ characterized in that the conveyor (35) at least one arranged in the second reservoir and relative to the second reservoir translationally movable piston (23), by means of which means the second reservoir collected material (24) from the second reservoir is conveyed.

8. Plant (11) according to any one of the preceding claims, ^¬ characterized in that at least one distribution element (36) is provided, which relative to the storage containers:

translationally movable in a first direction to thereby move the material (14) from the first reservoir onto the support member (31); and

in a second direction opposite to the first direction is translationally movable, thereby to move the material (24) from the second reservoir to the carrier element (31).

9. Plant (11) according to any one of the preceding claims, ^¬ characterized in that at least one in vertical Rieh- tion is provided at least temporarily above the support element (31) and can be supplied with the material (14, 24) from the respective storage container pourable element (38) by means of which the material (14, 24) ment to pour on the Trägerele- (31) ,

10. Plant (11) according to claim 9, characterized in that the reservoir via respective lines (40) through which the material (14, 24) from the storage containers

is hindurchförderbar, with the pouring element (38) are connected, which is supplied via the lines (40) with the material (14, 24) from the storage containers.

11. Plant (11) according to claim 10, characterized in that at least one conveying element (42) is provided, with ^{¬ means} which the material (14, 24) from the respective storage container through the respective line (40) through to the pouring element ( 38) is eligible.

12. System (11) according to one of the preceding claims, ^¬ characterized by that at least one of Vorratsbehäl ^¬ ter is assigned at least one sensor (16, 26), by which a level of material (14, 24) in the Minim ^¬ at least one reservoir can be detected.

13. A method for the additive production of at least one component (34), comprising at least one storage container as first container (10) for receiving material (14) for producing the component, with at least one carrier element (31), with a conveyor (35), by means of which the material from the reservoir to the carrier element (31) moves, whereby from the support member (31) moving Ma ^¬ TERIAL (14) a material bed (32) is formed, is made from which the component (34), and with at least one second container (20) by means of which excess material (24) is collected on moving the material (14) from the storage container onto the carrier element (31), wherein the second container (20) is designed as a second storage container is, which is associated with the conveying device (35), ^¬ with which after moving the material (14) from the first reservoir to the carrier element (31) the captured by means of the second reservoir material (24) from the second reservoir to the carrier element (31) is moved,

characterized,

in that at least one of the storage containers formed by the first container (10) and the second container (20) is fitted with a sieve element (44) for sieving the material (14, 24) to be introduced into the at least one storage container.