CN114536741A

CN114536741A - Device for realizing combined printing of rigid and flexible materials with different properties

Info

Publication number: CN114536741A
Application number: CN202210195070.1A
Authority: CN
Inventors: 张元�; 陈瑶
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-05-27

Abstract

The invention provides a device for realizing the combined printing of rigid and flexible materials, which comprises a rack part, a movable guide rail part, a movable roller part and a nozzle part, wherein the rack part is provided with a plurality of guide rails; the method is characterized in that: the stepping motor and the controller are connected with the movable guide rail to control the X-axis direction to move, and are connected with the spray head to control the Y-axis direction to move; the two movable guide rails respectively drive the nozzle for printing the rigid material and the nozzle for printing the flexible material to move along the X-axis direction; the nozzle for printing the rigid material and the nozzle for printing the flexible material can be crossed to print the materials; the basic technical scheme of the invention is as follows: controlling a spray head for printing the flexible material and a spray head for printing the rigid material to move above the workbench in a crossed manner to realize combined printing of the two materials; the stepping motor and the controller are connected with the movable guide rail and the spray head to control the movement in the X-axis direction and the Y-axis direction; the nozzle moves on the transverse guide rail through the roller, and printing flexibility is achieved.

Description

Device for realizing combined printing of rigid and flexible materials with different properties

Technical Field

The invention relates to a device for realizing combined printing of rigid and flexible materials, and belongs to the field of 3D printing.

Background

At present, the research on 3D printing equipment in China is rapidly developed, the application of the 3D printing equipment relates to a plurality of fields such as aerospace, automobiles, biomedical treatment, buildings and the like, but many different universal equipment for printing products have great processing limitations and cannot meet diversified processing requirements. In the 3D printing medical field, many medical products printed by the same material are difficult to meet the performance requirements, and have insufficient elasticity, poor toughness and the like. The product quality problem greatly increases the limitation of the application of the 3D printing technology in the medical field, and simultaneously limits the progress and development of the medical technology.

The invention solves the defects to a great extent by the characteristics of multifunctionality, wide applicability and the like, and improves the comprehensive performance of 3D printing workpieces. In the aspect of processing, the sprayer for printing the flexible material and the sprayer for printing the rigid material are controlled to sequentially move above the workbench to print layer by layer, so that the combined printing of the rigid material and the flexible material is realized.

Disclosure of Invention

The invention provides a device for realizing combined printing of rigid and flexible materials with different properties;

the basic technical scheme is as follows: the nozzles for printing the flexible material and the nozzles for printing the rigid material are controlled to sequentially move above the workbench to print layer by layer, so that the combined printing of the rigid material and the flexible material with different properties is realized; the stepping motor and the controller are connected with the movable guide rail and the spray head, the guide rail is controlled to move along the X-axis direction, and the spray head is controlled to move along the Y-axis direction; the spray head moves along the Y-axis direction on the transverse guide rail through the pulley.

The invention has the advantages that: the nozzles for printing the flexible material and the nozzles for printing the rigid material are controlled to sequentially move above the workbench to print layer by layer, so that the combined printing of the rigid material and the flexible material with different properties is realized; the two materials are printed simultaneously according to different processing requirements, so that the quality and the efficiency of processed products are improved; meanwhile, the movable guide rail and the spray head are controlled by the stepping motor, and a feasible printing device is provided for processing products with high precision and stable quality.

Drawings

FIG. 1 is a structural front view of a device for realizing combined printing of rigid and flexible materials with different properties;

FIG. 2 is a side view in half section of an apparatus for performing combined printing of different rigid and flexible materials;

FIG. 3 is a schematic axial view of an apparatus for realizing combined printing of rigid and flexible materials with different properties;

FIG. 4 is a front half-sectional view of an apparatus for realizing combined printing of rigid and flexible materials with different properties.

Wherein: 1 a machine frame, 2 a movable guide rail I, 3 a rigid material printing nozzle, 4 a flexible material printing nozzle, 5 a movable guide rail II,

6 pulley devices I, 7 pulley devices II, 8 workbenches, 9 transverse guide rails I, 10 pulley devices III, 11 transverse guide rails II,

12 pulley device four

The specific implementation mode is as follows:

the matching relationship and the function of the parts of the invention are explained below with the accompanying drawings:

as shown in fig. 1, the combination of materials with different rigidity and flexibility inside the printing device mainly includes: the device comprises a rack 1, a first movable guide rail 2, a second movable guide rail 5, a rigid material printing nozzle 3, a flexible material printing nozzle 4, a pulley block, a material storage device and a workbench.

As shown in the attached figures 1, 2 and 4: the movable guide rail I2 is connected with a slide way at the top of the frame 1 through a pulley device I6; the second movable guide rail 5 is connected with a slide way at the top of the frame 1 through a third pulley device 10; the first transverse guide rail 9 and the second transverse guide rail 11 of the first movable guide rail 2 and the second movable guide rail 5 are connected with the upright post through bolts; the rigid material printing nozzle 3 and the flexible material printing nozzle 4 are respectively connected with the second transverse guide rail 11 and the first transverse guide rail 9 through a fourth pulley device 12 and a second pulley device 7.

As shown in the attached fig. 2 and 4: the rigid material printing nozzle 3 and the flexible material printing nozzle 4 are respectively connected with the pulley device IV 12 and the pulley device II 7 through screws; the flexible material nozzle 4 is connected with the material storage device through two material guide pipes; the rigid material nozzle 3 is connected with the material storage device through a material guide pipe;

the working mode of the invention is explained below with the attached drawings:

as shown in the attached figures 1, 3 and 4: the stepping motor and the controller are connected with the first moving guide rail 2 and the second moving guide rail 5 to control the movement in the X-axis direction, and are connected with the rigid material printing spray head 3 and the flexible material printing spray head 4 to control the movement in the Y-axis direction; the gap of the pulley block is adjustable, so that the first moving guide rail 2, the second moving guide rail 5, the rigid material printing nozzle 3 and the flexible material printing nozzle 4 are prevented from rolling on the track; when the bionic blood vessel with the rigid framework and the flexible outer skin is printed, PCL is used as a rigid printing material, and silica gel is used as a flexible printing material; according to the blood vessel model slicing result, controlling the rigid material printing nozzle 3 to move to a specified printing position to print a rigid framework material, after printing the rigid framework material on one layer, controlling the rigid material printing nozzle 3 to exit from a working area, controlling the flexible material printing nozzle 4 to move to a specified position to print a flexible skin material on the layer, after printing is completed, controlling the flexible material printing nozzle 4 to exit from the working area, finishing printing of one layer of structure, and repeating the current step to print the next layer; the workbench can move in the Z-axis direction, and when printing of a layer of model is finished, the workbench descends by one layer of height and starts to print the next layer; the finally printed blood vessel model has two materials of rigidity and flexibility, and the rigid framework is embedded in the flexible outer skin.

Claims

1. A device for realizing combined printing of rigid and flexible materials comprises a rack (1) part, a movable guide rail part, a printing nozzle part and a pulley block part; the method is characterized in that: the movable guide rail part is responsible for adjusting the printing position in the X-axis direction; the spray head part is responsible for adjusting the printing position in the Y-axis direction; the pulley block part is responsible for ensuring the connection and the relative movement between the movable guide rail and the rack (1) and the connection and the relative movement between the spray head and the transverse guide rail; the sprayer for printing the flexible material and the sprayer for printing the rigid material sequentially move to the position above the workbench to print different rigid and flexible materials, after the sprayer for printing the rigid material prints the rigid material on one layer, the sprayer for printing the flexible material withdraws from a working area, the sprayer for printing the flexible material moves to the position above the workbench to print the flexible material part on the layer, the layers are printed in a cross mode, and finally the combination printing of two different materials is achieved.

2. An apparatus for enabling combined rigid and flexible printing of two types of materials according to claim 1, further characterized by: the first moving guide rail (2) and the second moving guide rail (5) are controlled by a stepping motor and a controller, are respectively connected to a fixed guide rail at the top of the frame through a third pulley device (10) and a first pulley device (6), and move along the X-axis direction.

3. An apparatus for performing combined rigid and flexible printing of two types of materials according to claim 2, further characterized by: the rigid material printing spray head (3) and the flexible material printing spray head (4) are controlled by a controller, are respectively connected with the transverse guide rail II (11) and the transverse guide rail I (9) through the pulley device II (12) and move along the Y-axis direction.