DE202022106516U1 - Multi-channel nozzle device for additive product manufacturing - Google Patents

Abstract

Device (100) for carrying out additive product manufacturing, having at least one nozzle with an inner bore for conveying a curable substance for application to a base substrate (200) and subsequently to a structure made of curable substance, characterized in that a plurality of equally aligned Nozzles (110) are combined in a block (120), the direction of movement of which can be controlled when beads (210) are applied, and which is simultaneously mounted so that it can be displaced at right angles to the direction of movement by a predetermined amount.

Description

The invention relates to a device for carrying out additive product manufacturing, having at least one nozzle with an inner bore for conveying a curable substance for application first to a base substrate and subsequently to a structure made of curable substance.

Devices of the type mentioned at the outset are used in the prior art in order to produce products of the most varied shapes, and in particular those with concave/convex surface structures, by means of numerically controlled 3D printing. However, the known devices all have the disadvantage that mutual adhesion of successively applied substance layers is too low for some applications.

It is therefore the object of the invention to provide a device with the aid of which the mutual adhesion of successively applied layers of substance is significantly increased compared to the devices known in the prior art.

For a device of the type mentioned above, this object is achieved according to the invention in that a plurality of nozzles aligned in the same way are combined in one block, the direction of movement of which can be controlled when substance strands called beads are applied, and which is simultaneously mounted so that it can be displaced at right angles to the direction of movement by a predetermined amount .

Preferred embodiments of the invention are the subject matter of the subclaims, the elements of which act in the sense of a further improvement in the approach to solving the problem on which the invention is based.

In the device according to the invention, by means of the combination of features that a plurality of nozzles aligned in the same way are combined in one block, the direction of movement of which can be controlled when beads are applied, and which is at the same time mounted so that it can be displaced at right angles to the direction of movement by a predetermined amount, the mutual adhesion is successively applied Substance layers are increased compared to the devices known in the prior art in that a plurality of beads arranged next to one another and thus forming a wave field can be generated during product manufacture, with the manufacturing substance emerging through the nozzles being able to be positioned in such a way during successive application that a wave crest in each case falls into a Wave trough is applied, whereby a mutual and insofar stability-delivering interlocking of wave crests and wave troughs can be generated.

According to a first preferred embodiment of the device according to the invention, it is provided that the nozzles are arranged equidistantly.

According to another preferred embodiment of the device according to the invention, a plurality of nozzles are provided, each linearly aligned in a line and aligned parallel to one another.

In particular, the plurality of nozzles are assembled into a unitary one-piece block that is mounted for linear movement to form juxtaposed rectilinear beads.

In addition to the above, the block is movably mounted and controllable to make concentric arcs to form juxtaposed curved beads.

The nozzles preferably but not necessarily have mutually differently shaped undersurfaces. For example, the lower surfaces of the nozzles can be curved in a convex manner and, in particular, can be curved in a circular manner.

In particular, the bottom surfaces of the nozzles can be provided with an undercut, and can be curved in a concave manner.

Alternatively, the lower surfaces of the nozzles can also each have different, stochastic shapes.

According to an important preferred embodiment of the device according to the invention, the predetermined amount of a movement of the block perpendicular to the direction of movement or conveying direction is dimensioned to the width of the beads each having the same width.

Furthermore, the block can be mounted so that it can oscillate by a predetermined amount, in particular the width of a bead, perpendicular to the direction of movement.

The device according to the invention can be operated using very different substances. For example, the following substances are suitable for use: thermoplastic polyurethanes, polyamide, polylactide, liquid bisphenol diphenyl phosphates, polypropylene, polycarbonates, polyethylene terephthalate glycol, acrylonitrile butadiene styrene.

• 1 eine bevorzugte Ausführungsform des Blocks der erfindungsgemäßen Vorrichtung in einer Seitenansicht;
• 2 die Spur eines Auftrags einer Substanz in Form eines Stranges (Raupe) auf ein Grundsubstrat mittels der in 1 dargestellten bevorzugten Ausführungsform der erfindungsgemäßen Vorrichtung in einer Ansicht von schräg oben;
• 3 eine weitere bevorzugte Ausführungsform des Blocks der erfindungsgemäßen Vorrichtung in einer Querschnittsansicht.

The device according to the invention is explained below with reference to a preferred embodiment, which is shown in the figure of the drawing. Show in it:

• 1 a preferred embodiment of the block of the device according to the invention in a side view;
• 2 the trace of an application of a substance in the form of a strand (bead) on a base substrate using the in 1 illustrated preferred embodiment of the device according to the invention in a view obliquely from above;
• 3 another preferred embodiment of the block of the device according to the invention in a cross-sectional view.

The in the 1 until 3 The device 100 according to the invention shown is provided for carrying out an additive product manufacturing and contains a plurality of nozzles 110, each with an inner bore for conveying a curable substance for application primarily to a base substrate 200 and subsequently to a structure made of curable substance.

The plurality of nozzles 110 are aligned in the same direction and combined in a block 120, the direction of movement of which can be controlled when beads 210 are applied, and which is simultaneously mounted so that it can be displaced at right angles to the direction of movement by a predetermined amount.

The predetermined amount of a movement of the block 120 taking place at right angles to the direction of movement or conveying direction is dimensioned to the width of the beads 210 each having the same width.

The nozzles 110 of the block 120 are arranged equidistantly, with the plurality of nozzles 110 being linearly aligned parallel to one another in a line.

The block 120 is both mounted and controllable for linear movement to form juxtaposed straight beads 210 and movably mounted and controllable to perform concentric arcs to form juxtaposed curved beads 210 .

The undersurfaces 111 of the nozzles 110 are concavely curved.

Alternatively, the block 120 is mounted to oscillate by an amount equal to the width of each bead 210 perpendicular to the direction of travel.

The embodiment of the invention explained above is only for the purpose of a better understanding of the teaching according to the invention given by the claims, which as such is not restricted by the embodiment.

Reference List

100

contraption

110

jet

111

undersurface

120

block

200

base substrate

210

Caterpillar

Claims (13)

Device (100) for carrying out additive product manufacturing, having at least one nozzle with an inner bore for conveying a curable substance for application to a base substrate (200) and subsequently to a structure made of curable substance, characterized in that a plurality of equally aligned Nozzles (110) are combined in a block (120), the direction of movement of which can be controlled when beads (210) are applied, and which is simultaneously mounted so that it can be displaced at right angles to the direction of movement by a predetermined amount. Device (100) according to claim 1 , characterized in that the nozzles (110) are arranged equidistantly. Device (100) according to one of Claims 1 or 2 , characterized in that a plurality of nozzles (110) are provided, each linearly aligned in a line and aligned parallel to one another. Device (100) according to one of Claims 1 or 2 characterized in that the plurality of nozzles (110) are grouped in a block (120) mounted for linear movement to form juxtaposed rectilinear beads (210). Device (100) according to one of Claims 1 or 2 characterized in that the plurality of nozzles (110) are assembled in a block (120) movably mounted to make concentric arcs to form juxtaposed curved beads (210). Device (100) according to one of Claims 1 or 2 characterized in that the plurality of nozzles (110) are combined in a block (120) which is both mounted for linear movements to form juxtaposed rectilinear beads (210) and movably mounted for concentric arcs to form juxtaposed curved beads (210). Device (100) according to one of Claims 1 until 4 , characterized in that the nozzles (110) have differently shaped lower surfaces (111). Device (100) according to one of Claims 1 until 4 , characterized in that the lower surfaces (111) of the nozzles (110) are convexly curved. Device (100) according to one of Claims 1 until 4 , characterized in that the lower surfaces (111) of the nozzles (110) are curved in a circular manner. Device (100) according to one of Claims 1 until 4 , characterized in that the lower surfaces (111) of the nozzles (110) each have individually stochastic formed different shapes. Device (100) according to one of Claims 1 until 4 , characterized in that the lower surfaces (111) of the nozzles (110) provided with an undercut, are formed concavely curved. Device (100) according to one of the preceding claims, characterized in that the predetermined amount of a movement of the block (120) perpendicular to the direction of movement or conveying direction is dimensioned to the width of the beads (210) each having the same width. Device (100) according to any one of the preceding claims, characterized in that the block (120) is mounted to oscillate a predetermined amount perpendicular to the direction of movement.

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