PT109559A - ADDITIVE MANUFACTURING DEVICE FOR THE PRODUCTION OF COMPONENTS IN MULTIMATERIAL WITH HIGH VISCOSITY - Google Patents

Abstract

The present invention relates to a device that allows, by virtue of a high visibility, and in a self-contained manner, the production by means of three-dimensional stacking of volatile metals, corresponding to the volume of the pellet, and the layering of compartments in multi-material with samples COMBINATIONS OF COLORS AND FORMS. OPENING AND CLOSING THE MATERIAL DELIVERY HEADS (3) ALSO ENABLE THE FORMATION OF VOXES AND / OR FILAMENTS OR SEGMENTS OF MATERIAL. THE INTEGRATED ADDITIVE MANUFACTURING DEVICE FOR THE PRODUCTION OF MULTIMATERIAL COMPONENTS CAN PROCESS HIGH VISCOSITY MATERIALS AND IS CONSTITUTED BY AN AUTOMATIC PLATFORM CHANGE SYSTEM IMPROVED BY AXLE OR OTHER MOVEMENT BY JOINT DELIVERY OF MATERIALS THAT INTEGRATE A SYSTEM (1), a construction platform (4) which is moved in a relative manner and a droplet-on-demand system, the rotation movement of which is provided by a servomotor (2) or another electromechanical or hydraulic device.

Description

A "ADDITIVE MANUFACTURING DEVICE FOR THE PRODUCTION OF COMPONENTS IN MULTIMATERIAL WITH HIGH VISCOSITY"

DISCLOSURE OF THE INVENTION The present invention relates to a device which enables the production, by means of three-dimensional stacking of VOXEL - corresponding in volume to the volume of the product, from raw materials having a high viscosity in the form of liquids or pastes and in an automated manner. layer, multi-material component layer with numerous combinations of colors and shapes as the device operator can define and control the most suitable operating conditions for each specific production. The opening and closing of the material delivery heads (3) also allow the formation of VOXELS and / or filaments or segments of material. The integrated additive manufacturing device for the production of multi-material components can process high viscosity materials which change state with or without reaction and with or without temperature variation, consists of an automatic pallet changing system of movement in the direction of the axis or other (Z or other), ie, in the vertical or other direction. The automatic construction platform changeover system has a heated construction platform (4) which may be temperature controlled and in which liquid, solid or gaseous material may previously exist. The construction platform 4, also referred to as the material receiving assembly, after completion of the production of one part, is moved from the device giving rise to another platform to start a new production cycle. The platform containing the finished part is placed in a conveying system to be routed to pros processing systems with or without application of temperature, gas projection or other. It should be noted that the construction platform (4) can be heated to a temperature suitable for production. Additionally, the device for the purpose of the present invention comprises a set of three or more Cartesian axes (XYZW or more) trajectory generator, motorized and controlled by a processing and control software, which in turn comprises a connection interface to the operator and one of communication with external computer systems. The present invention relates to an additive manufacturing device for multi-material components with high viscosity, which change state with or without reaction and with or without temperature variation. The components produced are characterized by having almost complete freedom of geometry and shape, as a result of the drop-on-demand deposition, by layer dropping of various materials with high viscosity (glass (cement or hydraulic lime) and / or aerated (lime or gypsum), polymer mortar, composite polymers with high viscosity, etc.) may have different colors. The device, object of the present invention, comprises feeders and mixers of automated high viscosity materials (Figure 1). The materials to be processed are in the dry state, or in the form of liquid or paste with high viscosity at room temperature or with controlled temperature, high or low, and color or reactive additives that catalyze mechanisms of state change can be added (Figure 1 ). The system of the present invention comprises a set of three or more Cartesian axes (XYZW and others) motorized and controlled by a control system, trajectory generator, and a construction platform (4) movable in the direction of (Z) and can be replaced automatically to restart the manufacturing process. The material delivery head (3) may be mounted on the said axle system or any other axis, i.e. there may be several ways of achieving the movement of the head (3), such as a robot arm, provided there is a movement controlled and synchronized relative relationship between the material delivery assembly and the material receiving assembly. The device may additionally have one or more heat sources which, together with an additive technology, provides the change of state of the deposited material upon request. The drop-on-demand system shown in figure 2 is defined by a piston 6 which moves axially in a cylinder 7 and 8. This piston is driven by a crankshaft (5) whose rotational movement is provided by a servomotor (2) or another electromechanical or hydraulic form. The frequency of movement of the piston 6 causes intermittent delivery of the material 9 entering the cylinder 7 and 8. This delivery is made on the platform 4 in the form of voxels 11 of material which accumulate in the form of the part to be produced 12. This delivery head (3) based on a crankshaft allows to produce a high frequency movement, controlled with applied force of high value. The opening and closing of the material delivery heads (3) also allow the formation of VOXELS and / or filaments or segments of material. For this to be provided, a system of axial movement of a piston is applied based on the movement of a crankshaft driven by a system of high mechanical, electrical, hydraulic or other power.

Thus, with this device, it is possible to produce customized parts with a great freedom of geometry in a short time and at perfectly acceptable costs due to the drastic reduction of labor (only one operator is required), the elimination of molds and energy waste associated with the industry, which is a highly competitive advantage over conventional and traditionally used processes, not only in utility parts but also in the production of end-use parts, opening new creative horizons to designers and allowing the mass customization. The device must have one or more deposition heads (3) (Figure 3) so as to deliver on demand on the platform (4) various materials of various colors, including carrier materials (10) which will then be detached from the part produced. The material delivery set can do so on the platform (4) which represents the material collection set. In the set of reception of materials there may be parts, materials in solid, liquid or other form. The relative movement between the material delivery assembly and the material receiving assembly is synchronized with the frequency of the piston of the head (3) driven by the crankshaft. The flow of material entering the cylinder in turn is synchronized with all other movements.

SUMMARY OF THE INVENTION The present invention relates to an additive manufacturing device for the production of multi-material components having a high viscosity comprising: • Material delivery assembly and receiving assembly of relatively moving materials; • Set of materials delivery that integrates: a. Reservoirs of materials; B. Pumping systems for materials; W. Dosing system; d. A mixing zone which delivers the material to a cylinder in which a piston moves axially; and. Feeders and mixers of materials of high or low viscosity automated; f. Material deposition heads (3), based on a crankshaft, mounted on a system of shafts or any other, that is, there may be several ways of achieving the movement of the head (3), such as a robot arm, provided there is a relative controlled and synchronized movement between the material delivery assembly and the material receiving assembly; g. A drop-on-demand system consisting of a piston (6) that moves axially in a cylinder (7) and (8) and is driven by a crank (5) whose rotation movement is provided by a servomotor (2) or another electromechanical form or hydraulic; • A set of three or more Cartesian axes (XYZW or more) trajectory generator, motorized and controlled by processing and control software, which in turn integrates an operator interface and a communication interface with external computer systems; • Automatic platform changeover system which is movable in the direction of the axis or other and has a heated construction platform (4) which can be temperature controlled and in which liquid, solid or gaseous material may previously exist.

Additionally the present invention may possess one or more heat sources which, in conjunction with the additive technology, provides for the change of state of the deposited material upon request.

With respect to raw materials, the present invention may use high viscosity feedstocks in the form of liquids or pastes which may change state with or without reaction and with or without temperature variation. The raw materials may be molten glass, hydraulic binder mortar (cement or hydraulic lime) and / or air (lime or gypsum), polymer mortar, composite polymers with high viscosity, etc.).

The materials to be processed are in the dry state, or in the form of a liquid or paste having a high viscosity at room temperature or at a controlled or high or low temperature, and color or reactive additives which catalyze state change mechanisms may be added.

The components produced by the present invention: have almost total freedom of geometry and shape, and may have different colors; • They are multi-material products with numerous color combinations. The method of the present invention consists in the automated production, by three-dimensional stacking of VOXEL, from layer to layer, and / or filaments or segments of material (additive process) and on the one hand to obtain numerous shapes, since the operator of the device can define and control the most appropriate operating conditions for each specific production; and on the other hand to perform selective delivery (by drop on request).

It is added that the construction platform (4): 1. after finishing the production of one part, is moved from the device giving rise to another platform to start a new production cycle; 2. contains the completed part is placed in a transport system to be routed to pros processing systems with or without application of temperature, gas projection or other; 3. It can be heated to a temperature suitable for production, and liquid or solid liquid or gaseous material may exist in advance. The relative movement between the material delivery assembly and the material receiving assembly is synchronized with the frequency of the piston of the head (3) driven by the crankshaft. The flow rate of material entering the cylinder in turn is synchronized with all other movements. The present method presents the possibility of producing customized parts with a great freedom of geometries in a short time and at perfectly acceptable costs due to the drastic reduction of the workmanship (only one operator is needed), the elimination of molds and energy waste associated with the industry, which is a highly competitive advantage over conventional and traditionally used processes, not only in utility parts but also, and especially in the production of end-use parts, opening new creative horizons to designers and allowing the mass customization.

Description of the figures

Figure 1 - Schematic and simplified perspective representation according to the invention and illustrating the main components that comprise the additive manufacturing device for the production of multi-material components, being able to process high viscosity materials that change state with or without reaction and with or without temperature variation, provided as a multi-material mixture of high viscosity. The device may be comprised of material reservoirs, material pumping systems (1), dosing system and mixing zone which interlaces the material for a cylinder in which a cylinder of axially moving is disposed. There is a set of materials delivery and a collection of materials that move relative.

Figure 2 - Schematic and simplified perspective view, according to the invention, and illustrating the VOXEL deposition head (3) "on demand" of the additive manufacturing device for the production of multi-material components being able to process materials of high viscosity which change their state with or without reaction and with or without temperature variation. The piston (6) moves axially in a cylinder (7) and (8). This piston is driven by a crankshaft (5) whose rotational movement is provided by a servomotor (2) or another electromechanical or hydraulic form. The frequency of movement of the piston 6 causes intermittent delivery of the material 9 entering the cylinder 7 and 8. This delivery is made on the platform 4 in the form of voxels 11 of material which accumulate in the form of the part to be produced 12. This crank-based deposition head (3) allows high-frequency movement, controlled with high-value applied force, to be produced. The opening and closing of the material delivery heads (3) allow the formation of VOXELS and / or filaments or segments of material.

Figure 3 - Schematic and simplified perspective view, according to the invention, and showing the VOXEL deposition head (3) "on demand" of the additive manufacturing device for the production of multi-material components, being able to process materials of high viscosity which change their state with or without reaction and with or without temperature variation. The additive system must have one or more deposition heads (3) in order to deliver on demand on the platform (4) various materials of various colors, including carrier materials (10) which will then be detached from the produced part. The material delivery set can do so on the platform that represents the material collection set. In the collection of materials, there may be parts, materials in solid, liquid or other form. The relative movement enters the material delivery assembly and the material receiving assembly is synchronized with the frequency of the piston of the head (3) driven by the crankshaft. The flow of material entering the cylinder in turn is synchronized with all other movements. The opening and closing of the material delivery heads (3) allow the formation of VOXELS and / or filaments or segments of material. It will be added that the area where the heads are represented represents the material delivery assembly (14) to the material receiving assembly (15) below, is the area where the carrier material (10) and the carrier material (13). Still further below is the shape of the workpiece (12) and the form of support in production (16).

Preferred embodiment of the invention

Referring now to Figure 1, the characterization of the additive manufacturing device for the production of multi-material components will now be described in detail, being able to process high viscosity materials that change state with or without reaction and with or without temperature variation. The device is comprised of material reservoirs, material pumping systems (1), preferably a high or low viscosity fluid dosing pump, dosing system and mixing zone which delivers the material to a cylinder in which there is a cylinder moves axially. There is a set of materials delivery and a collection of materials that move relative.

2, the piston 6 moves axially in a cylinder 7 and 8. This piston is driven by a crankshaft (5) whose rotational movement is provided by a servomotor (2) or another electromechanical or hydraulic form. The frequency of movement of the piston 6 causes intermittent delivery of the material 9 entering the cylinder 7 and 8. This delivery is made on the platform 4 in the form of voxels 11 of material which accumulate in the form of the part to be produced 12. This crank-based deposition head (3) allows high-frequency movement, controlled with high-value applied force, to be produced. The opening and closing of the material delivery heads (3) allow the formation of VOXELS and / or filaments or segments of material.

Referring to Figure 3, the additive system must have one or more deposition heads (3) in order to deliver on demand on the platform (4) various materials of various colors, including carrier materials (10) which will then be of the piece produced. The material delivery set can do so on the platform that represents the material collection set. In the set of reception of materials there may be parts, materials in solid, liquid or other form. The relative movement between the material delivery assembly and the material receiving assembly is synchronized with the frequency of the piston of the head (3) driven by the crankshaft. The flow of material entering the cylinder in turn is synchronized with all other movements.

Claims (2)

An additive manufacturing device for the production of multimaterial components with a high viscosity characterized in that it consists of: a material delivery set and a collection set for relatively moving materials; • Set of materials delivery that integrates: a. Reservoirs of materials; B. Systems for pumping materials (1); W. Dosing system; d. A mixing zone which delivers the material to a cylinder in which a piston moves axially; and. Feeders and mixers of materials of high or low viscosity automated; f. Material deposition heads (3), based on a crankshaft, mounted on a system of shafts or any other; g. A drop-on-demand system consisting of a piston (6) that moves axially in a cylinder (7) and (8) and is driven by a crank (5) whose rotation movement is provided by a servomotor (2) or another electromechanical form or hydraulic; • A set of three or more Cartesian axes, trajectory generator, motorized and controlled by processing and control software, which in turn integrates a connection interface to the operator and another one of communication with external computer systems; • Automatic platform change system with movement in the direction of the axis or another and which has a heated platform (4). A device according to claim 1, characterized in that it has one or more heat sources.