RU216371U1 - Device for additive formation of large-sized products - Google Patents

Abstract

The device relates to the means of manufacturing three-dimensional products on a digital 3D model by rapid prototyping methods, in particular extrusion deposition of a sequence of layers in the cross section of the product. The technical result is to provide higher accuracy and quality of digital manufacturing of the product with a simultaneous reduction in the number of technological operations and a reduction in the manufacturing time of the product. This technical result is achieved by the fact that the device contains an extruder portal placed on the frame, made with the possibility of installing an extruder on it and moving it using a movement drive along the extruder guides, and a milling portal made with the possibility of installing a milling cutter on it and moving it using the drive movement along the guides of the milling cutter, while the extruder and milling cutter are made with the possibility of layer-by-layer formation and simultaneous milling of the product by prototyping with a thermoplastic polymer on the table, the vertical movement of which is carried out by drives made one for each corner of the table, and the extruder portal and the milling cutter portal are made with the possibility of longitudinal and vertical movement using drives of longitudinal and vertical movement. 1 ill.

Description

The device relates to means for manufacturing three-dimensional products from a digital 3D model using rapid prototyping methods, which can be implemented, in particular, by extrusion deposition of a sequence of layers in a product cross section.

A device is known [RU 178905, U1, B41J 2/00, 06/20/2017], including a base on which a printing material supply mechanism is fixed, a motor configured to rotate an eccentric that drives a single platform, valves configured to lock inactive extruder, a single platform that contains two easily removable extruders with heating elements, a self-locking switching mechanism made with the possibility of positioning the nozzles in the working position, and spring-loaded rollers made with the possibility of pressing the material against the feed mechanism for the currently active extruder, while, the self-locking mechanism is made in the form of a plate with a profiled cutout, made with the possibility of self-locking the eccentric, which is fixed in one of the working positions in the profiled cutout of the plate installed on a single platform.

The disadvantage of the device is the relatively high complexity due to the need to ensure the exact interaction of the two heads of the extruder.

The closest in technical essence to the proposed one is a device for manufacturing a three-dimensional (volumetric) product according to a 3D digital model using rapid prototyping methods [RU 2552235, C1, B41F 17/00, 06/10/2015], characterized in that it includes two longitudinal and, at least one transverse guide for moving the print head in the XY plane, where the longitudinal guides are located along the Y axis and are rigidly fixed to the base, and the transverse guide is located along the X axis between two longitudinal guides with the ability to move along them, the carriage on which it is fixed a print head movable along a transverse rail, two drive belts, the ends of which are fixed on the carriage with the formation of two interconnected circuits designed to move the carriage with the print head in the XY plane by means of two drive pulleys connected to their drives with the possibility of independent rotation of pulleys in one and or in opposite directions, one of which transmits the traction force to the first drive belt, and the second - to the second drive belt, while one of the circuits is formed by the P-shaped arrangement of the first belt, and the second circuit is formed by the second belt located symmetrically relative to the location of the first belt with an axis of symmetry located parallel to the longitudinal guides and at an equidistant distance from them, while the working parts of the belts of the two circuits, passing along the transverse guide, are located in the same XY plane.

The disadvantage of the closest technical solution is the relatively low accuracy and quality of manufacturing a three-dimensional (volumetric) product according to a 3D digital model using rapid prototyping methods, since in this and other known devices, after layer-by-layer application of a thermoplastic polymer, as a rule, the product is finished, for example, on a milling machine to obtain the exact dimensions of a product, edit technological joints, smooth out "square" corners, correct holes with the correct tolerances, eliminate the effect of "stairs", etc. by non-planar milling.

The task of the development is to ensure higher accuracy and quality of manufacturing a three-dimensional (volumetric) product according to a digital 3D model using rapid prototyping methods with a simultaneous reduction in the number of technological operations and a reduction in the manufacturing time of the product.

The technical result, which the claimed technical solution is aimed at, is to ensure higher accuracy and quality of manufacturing a three-dimensional (volumetric) product according to a 3D digital model using rapid prototyping methods while reducing the number of technological operations and reducing the manufacturing time of the product.

This allows you to expand the arsenal of technical tools that can be used for fast and high-quality prototyping.

The problem is solved, and the required technical result is achieved by the fact that the device for the additive formation of large-sized products contains the following.

The drawing shows a device for the additive formation of large-sized products in conjunction with interacting technical means.

The drawing shows:

1 - frame;

2 - extruder portal;

3 - milling portal;

4 - beam of vertical movement of the router;

5 - table;

6 - extruder;

7 - milling cutter;

8 - extruder portal drive;

9 - milling portal drive:

10 - extruder drive;

11 - beam drive for vertical movement of the router;

12 - milling cutter drive;

13 - table drives;

14 - guide for moving the portal of the extruder;

15 - guide for moving the portal of the router;

16 - guide for moving the extruder;

17 - guide for moving the router;

18 - guide for vertical movement of the router;

19 - guide for moving the table;

20 - rail for moving the portals of the extruder and milling cutter;

21 - rail profile movement of the extruder;

22 - the first profile rail for moving the beam of the vertical mill;

23 - the second profile rail for moving the beam of the vertical milling machine;

24 - the third profile rail for moving the beam of the vertical milling machine;

25 - the fourth profile rail for moving the beam of the vertical milling machine.

The device for the additive formation of large-sized products works as follows.

To form large-sized products, the thermoplastic polymer is extruded by simultaneous coordinated movement of the extruder 6 and the milling cutter 7, which performs milling (finishing) of the part, respectively. The proposed technical solution produces rapid prototyping by simultaneous 3D printing and milling of the manufactured product.

The extruder 6 moves along the rail 20 moving the portals of the extruder and milling cutter and rail 21 profile movement of the extruder. The beam 4 of the vertical movement of the milling cutter, on which the spindle of the milling cutter is located, moves along the rail 20 of the movement of the portals of the extruder and the milling cutter, along the guide 17 of the movement of the milling cutter and along the guide 18 of the vertical movement of the milling cutter, moreover, the milling spindle 7 can be rotated in two axes of the five axes of milling .

The manufactured product is located on a table 5 movable along the guide 19. All rail guides are driven by ball screws from electric drives in the form, for example, of Closed-Loop feedback motors.

The movement of portals, both milling and extruder along the longitudinal axis, is carried out by two electric drives - one for the left and right parts of the drive 9 of the milling portal, and one for the left and right parts of the drive 8 of the extruder portal, respectively.

The movement of the table 5 along the vertical axis is carried out by drives 13 of the table - one for each corner of the table.

Coordinated control of drives, extrusion of thermoplastic polymer and control of the milling cutter is carried out by the central processor, which is not shown in the drawing and executes the code of the control program. According to the commands of the control program, movement is carried out by the specified axes. Also, according to the commands of the control program, the thermoplastic polymer is extruded, the extruder 6 is moved, the milling cutter 7 is controlled, the part is milled, the table 5 is moved, on which the manufactured product is located. A distinctive feature of the device is that it allows rapid prototyping by simultaneous 3D printing and milling of the manufactured part.

Thus, the proposed device provides a higher accuracy and quality of manufacturing a three-dimensional (volumetric) product according to a 3D digital model using rapid prototyping methods with a simultaneous reduction in the number of technological operations and a reduction in the manufacturing time of the product.

Claims (1)

A device for the additive formation of large-sized products, containing an extruder portal placed on the frame, made with the possibility of installing an extruder on it and moving it using a movement drive along the extruder guides, and a milling portal made with the possibility of installing a milling machine on it and moving it using a movement drive along guides of the milling cutter, while the extruder and milling cutter are made with the possibility of layer-by-layer formation and simultaneous milling of the product by prototyping with a thermoplastic polymer on a table, the vertical movement of which is carried out by drives made one for each corner of the table, and the extruder portal and the milling portal are made with the possibility of longitudinal and vertical movement using longitudinal and vertical movement drives.

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