CN108044938B - Synchronous printing method for filamentous materials for 3D printing - Google Patents
Synchronous printing method for filamentous materials for 3D printing Download PDFInfo
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- CN108044938B CN108044938B CN201711321595.0A CN201711321595A CN108044938B CN 108044938 B CN108044938 B CN 108044938B CN 201711321595 A CN201711321595 A CN 201711321595A CN 108044938 B CN108044938 B CN 108044938B
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- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
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Abstract
The invention relates to a synchronous printing method of filamentous materials for 3D printing, which comprises material positioning, material preheating, twisting operation and secondary preheating. On one hand, the production process is simple and easy to master, the production process parameters are standard, the process is flexible and convenient to adjust, and on the other hand, the operation requirements of expanding the diameter of a multistrand filiform material before 3D printing, mixing different raw materials, adjusting the structural strength of the filiform material and the like can be effectively realized according to the use requirements, so that the reliability and the flexibility of the filiform material during 3D printing are greatly improved.
Description
Technical Field
The invention relates to a synchronous printing method of filamentous materials for 3D printing, and belongs to the technical field of 3D printing.
Background
In 3D printing operation, filamentous materials are a very common raw material for printing and forming operation, the usage amount is huge, but with the progress of 3D printing and forming technology and the need of complex part printing operation, the requirements on the diameter, mechanical strength, composition, characteristics and the like of the filamentous materials used for printing and forming operation are higher and higher, aiming at the problem, the current main solution is to directly produce the formula and the structure of filamentous material products meeting the corresponding printing operation, although the mode can meet the use requirements to a certain extent, on one hand, the production development difficulty of the filamentous materials is high, the production cost and the use cost are high, on the other hand, the filamentous materials cannot flexibly meet the production requirements of various different printing operations when in use, thereby the production efficiency, the product quality and the cost of the 3D printing operation are seriously influenced, and on the other hand, the production and development difficulty of the filamentous materials used for the 3D printing operation is high, the method can not be effectively matched with the requirements of 3D printing work development and D printing technology development, so that aiming at the current situation, a method capable of flexibly adjusting the physical and chemical properties of the silk-shaped material is urgently developed to meet the requirements of actual production of 3D printing operation.
Disclosure of Invention
The invention aims to overcome the defects and provide a synchronous printing method of filamentous materials for 3D printing.
In order to realize the purpose, the invention is realized by the following technical scheme:
a synchronous printing method of filamentous materials for 3D printing comprises the following steps:
firstly, material positioning, namely selecting filamentous materials meeting the quantity and types required by 3D printing and processing operation according to use requirements and simultaneously installing the filamentous materials on a loading machine, then connecting the front ends of the filamentous materials with preheating equipment through a traction mechanism, and then connecting the front ends of the filamentous materials passing through waste heat equipment with twisting equipment;
secondly, preheating materials, starting a feeding machine, a traction device, a preheating device and a twisting device to operate simultaneously after the first-step operation is finished, then enabling all the filamentous materials to synchronously pass through the preheating device for heating operation, wherein when all the filamentous materials are heated by the preheating device, a gap between every two adjacent filamentous materials is 3-10 mm and is distributed in parallel, the speed of the preheating device is 1-5 m/s, the temperature of the filamentous materials after being heated by the preheating device is 50-100 ℃, and the preheated filamentous materials are conveyed to the twisting device by a traction mechanism;
thirdly, performing stranding operation, namely after the second step is finished, when each preheated filamentous material is subjected to stranding operation through stranding equipment, firstly selecting at least one of the filamentous materials as a central matrix, then using the rest filamentous materials as a coating, and coating the outer surface of the filamentous material of the central matrix by the coating in a spiral manner around the axis of the central matrix to finish the stranding operation to prepare a pretwisted material;
and fourthly, preheating the pretwisted material prepared in the third step again through preheating equipment under the driving of traction equipment to finally obtain a finished product twisted material, and then directly conveying the finished product twisted material to 3D printing equipment, wherein the speed of the pretwisted material passing through the preheating equipment is 1-5 m/s, and the temperature of the filamentous material heated through the preheating equipment is 60-120 ℃.
Further, the heat source of the preheating device is an irradiation heat source.
Furthermore, in said second step, the drawing force of each filamentary material through the preheating device is between 70% and 90% of its tensile strength.
Furthermore, in the third step, when one filamentous material is used as the central substrate, the diameter of the central substrate is 1-5 times that of the filamentous material used as the coating layer; when the number of the filamentous materials as the central matrix is two or more, the filamentous materials as the central matrix are twisted with each other.
Furthermore, in the third step, when one coating layer filamentous material is used, the coating layer filamentous material directly surrounds the axis of the central matrix to be coated on the outer surface of the central matrix in a spiral shape, and the screw pitch of the coating layer filamentous material is 0 to 5-10 times of the diameter of the coating layer filamentous material.
Furthermore, in the third step, when two or more coating filamentous materials are used, each coating filamentous material is spirally coated on the outer surface of the central matrix around the axis of the central matrix, and each coating filamentous material is distributed in the same layer of the outer surface of the central matrix in the radial direction or distributed in at least two layers of the outer surface of the central matrix in the radial direction.
Furthermore, in the third step, the filamentous materials as the coating layers are distributed in the same layer in the radial direction of the outer surface of the central matrix, the filamentous materials as the coating layers are spirally coated on the outer surface of the central matrix around the axis of the central matrix, the thread pitch is 0 to 5 to 10 times of the diameter of the filamentous materials as the coating layers, and the filamentous materials as the coating layers are mutually distributed in parallel or are mutually crossly woven to be distributed in a net structure.
Furthermore, when the filiform materials serving as the coating layers in the third step are distributed in at least two layers of the outer surface of the central matrix in the radial direction, the spiral directions of the adjacent two layers serving as the filiform materials of the coating layers around the central matrix are opposite, each layer comprises at least one filiform material serving as the coating layer, and when the filiform materials serving as the coating layers in each layer are single, the single filiform materials surround the axis of the central matrix and are spirally coated on the outer surface of the central matrix, and the thread pitch is 0 to 5-10 times of the diameter of the filiform materials serving as the coating; when the number of the filiform materials used as the coating layers in each layer is two or more, the filiform materials used as the coating layers are spirally coated on the outer surface of the central matrix around the axis of the central matrix, the thread pitch is 0 to 5 to 10 times of the diameter of the filiform materials used as the coating layers, and the filiform materials used as the coating layers are mutually distributed in parallel or are mutually crossed and woven to form a reticular structure.
On one hand, the production process is simple and easy to master, the production process parameters are standard, the process is flexible and convenient to adjust, and on the other hand, the operation requirements of expanding the diameter of a multistrand filiform material before 3D printing, mixing different raw materials, adjusting the structural strength of the filiform material and the like can be effectively realized according to the use requirements, so that the reliability and the flexibility of the filiform material during 3D printing are greatly improved.
Drawings
FIG. 1 is a schematic flow chart of the preparation method of the present invention;
FIG. 2 is a schematic view of a structure in which a layer of coated filamentary material is present;
FIG. 3 is a schematic view of a structure in which the coated filamentary material is in two layers.
Detailed Description
Example 1
As shown in fig. 1-3, a synchronous printing method for 3D printing filamentary material includes the following steps:
firstly, material positioning, namely selecting 2 filamentous materials meeting the requirements of 3D printing and processing operation according to use requirements, simultaneously installing the filamentous materials on a loading machine, then connecting the front ends of the filamentous materials with preheating equipment through a traction mechanism, and then connecting the front ends of the filamentous materials passing through waste heat equipment with twisting equipment;
secondly, preheating materials, namely after the first-step operation is finished, simultaneously starting a feeding machine, a traction device, a preheating device and a twisting device to operate, and then enabling each filamentous material to synchronously pass through the preheating device for heating operation, wherein when each filamentous material is heated by the preheating device, a gap between every two adjacent filamentous materials is 5 mm and is distributed in parallel, the speed of the preheating device is 1.5 m/s, the temperature of the filamentous material after being heated by the preheating device is 80 ℃, and the preheated filamentous material is conveyed to the twisting device by a traction mechanism;
thirdly, performing stranding operation, wherein after the second step is completed, when each preheated filamentous material is subjected to stranding operation through stranding equipment, one of the filamentous materials is selected as a central substrate, the diameter of the filamentous material serving as the central substrate is 3 times that of the filamentous material serving as a coating, the other remaining filamentous material is used as a coating, the coating spirally coats the outer surface of the filamentous material of the central substrate around the axis of the central substrate, and when the coating is performed, the filamentous material serving as the coating directly spirally coats the outer surface of the central substrate around the axis of the central substrate, and the thread pitch of the filamentous material serving as the coating is 0, so that the stranding operation and the preparation are completed to obtain a pretwisted material;
and fourthly, preheating for the second time, namely preheating the pretwisted material prepared in the third step again through preheating equipment under the driving of traction equipment to finally obtain a finished product twisted material, and then directly conveying the finished product twisted material to 3D printing equipment, wherein the speed of the pretwisted material passing through the preheating equipment is 4 m/s, and the temperature of the filamentous material heated through the preheating equipment is 90 ℃.
Wherein, the heat source of the preheating device is an irradiation heat source.
At the same time, in the second step, the traction force of each filamentary material passing through the preheating device is 80% of its tensile strength.
Example 2
As shown in fig. 1-3, a synchronous printing method for 3D printing filamentary material includes the following steps:
firstly, positioning materials, namely selecting 3 filamentous materials meeting the requirements of 3D printing and processing operation according to use requirements, simultaneously installing the filamentous materials on a loading machine, then connecting the front ends of the filamentous materials with preheating equipment through a traction mechanism, and then connecting the front ends of the filamentous materials passing through waste heat equipment with twisting equipment;
secondly, preheating materials, namely after the first-step operation is finished, simultaneously starting a feeding machine, a traction device, a preheating device and a twisting device to operate, and then enabling each filamentous material to synchronously pass through the preheating device for heating operation, wherein when each filamentous material is heated by the preheating device, a gap between every two adjacent filamentous materials is 1 mm and is distributed in parallel, the speed of the preheating device is 2 m/s, the temperature of the filamentous material after being heated by the preheating device is 90 ℃, and the preheated filamentous material is conveyed to the twisting device by a traction mechanism;
thirdly, stranding operation, wherein after the second step is finished, when the preheated filamentous materials are stranded by stranding equipment, at least one of the filamentous materials is selected as a central matrix, and the diameter of the filamentous material used as the central matrix is 2.5 times of that of the filamentous material used as the coating layer, then the remaining two filiform materials are used as a coating layer, and the coating layer spirally coats the outer surface of the filiform material of the central matrix around the axis of the central matrix, and when coating, the remaining two filiform materials are distributed in the uniform layer as coating layers, and the two filiform materials are spirally coated on the outer surface of the central matrix as the coating layers around the axis of the central matrix, the thread pitch is 5 times of the diameter of the coating filamentous material, the coating filamentous materials are mutually crossed and woven to be distributed in a net structure, and the pre-twisted material is prepared after the twisting operation is finished;
and fourthly, preheating for the second time, namely preheating the pretwisted material prepared in the third step again through preheating equipment under the driving of traction equipment to finally obtain a finished product twisted material, and then directly conveying the finished product twisted material to 3D printing equipment, wherein the speed of the pretwisted material passing through the preheating equipment is 3 m/s, and the temperature of the filamentous material heated through the preheating equipment is 100 ℃.
Wherein, the heat source of the preheating device is an irradiation heat source.
In addition, in said second step, the drawing force of each filamentary material through the preheating device is 70% of its tensile strength.
Example 3
As shown in fig. 1-3, a synchronous printing method for 3D printing filamentary material includes the following steps:
firstly, material positioning, namely selecting 8 filamentous materials meeting the requirements of 3D printing and processing operation according to use requirements and simultaneously installing the filamentous materials on a loading machine, then connecting the front ends of the filamentous materials with preheating equipment through a traction mechanism, and then connecting the front ends of the filamentous materials passing through waste heat equipment with twisting equipment;
secondly, preheating materials, namely after the first-step operation is finished, simultaneously starting a feeding machine, a traction device, a preheating device and a twisting device to operate, and then enabling each filamentous material to synchronously pass through the preheating device for heating operation, wherein when each filamentous material is heated by the preheating device, a gap between every two adjacent filamentous materials is 2.5 mm and is distributed in parallel, the speed of the preheating device is 2.5 m/s, the temperature of the filamentous material after being heated by the preheating device is 60 ℃, and the preheated filamentous material is conveyed to the twisting device by a traction mechanism;
thirdly, stranding operation, after the second step is finished, when each preheated filiform material is stranded through stranding equipment, firstly, two filiform materials are selected from each filiform material to be used as a central substrate, the two filiform materials used as the central substrates are stranded with each other, the diameter of the stranded central substrate is 5 times of that of the coated filiform materials, then the remaining 6 filiform materials are used as coatings and are uniformly coated outside the central substrate in two layers along the radial direction of the central substrate, wherein the coated filiform material at the lowest layer directly surrounds the axis of the central substrate to be coated on the outer surface of the central substrate in a spiral shape, the thread pitch is 0, the two coated filiform materials are distributed in parallel with each other, the coated filiform material at the outermost layer is coated on the outer surface of the coated filiform material at the lowest layer and is in a spiral structure surrounding the axis of the central substrate, and the spiral direction is opposite to the spiral direction, the thread pitch is 6 times of the diameter of the coating filamentous material, the materials are mutually crossed and woven to be distributed in a net structure, and the pre-twisted material is prepared after the twisting operation is finished;
and fourthly, preheating for the second time, namely preheating the pretwisted material prepared in the third step again through preheating equipment under the driving of traction equipment to finally obtain a finished product twisted material, and then directly conveying the finished product twisted material to 3D printing equipment, wherein the speed of the pretwisted material passing through the preheating equipment is 4 m/s, and the temperature of the filamentous material heated through the preheating equipment is 120 ℃.
Wherein, the heat source of the preheating device is an irradiation heat source.
In addition, in said second step, the drawing force of each filamentary material through the preheating device is 80% of its tensile strength.
On one hand, the production process is simple and easy to master, the production process parameters are standard, the process is flexible and convenient to adjust, and on the other hand, the operation requirements of expanding the diameter of a multistrand filiform material before 3D printing, mixing different raw materials, adjusting the structural strength of the filiform material and the like can be effectively realized according to the use requirements, so that the reliability and the flexibility of the filiform material during 3D printing are greatly improved.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. The synchronous printing method of the filamentous material for 3D printing is characterized in that the synchronous printing and modeling method of the multi-strand twisted filamentous material for 3D printing comprises the following steps:
firstly, material positioning, namely selecting filamentous materials meeting the quantity and types required by 3D printing and processing operation according to use requirements and simultaneously installing the filamentous materials on a loading machine, then connecting the front ends of the filamentous materials with preheating equipment through a traction mechanism, and then connecting the front ends of the filamentous materials passing through waste heat equipment with twisting equipment;
secondly, preheating materials, starting a feeding machine, a traction device, a preheating device and a twisting device to operate simultaneously after the first-step operation is finished, then enabling all the filamentous materials to synchronously pass through the preheating device for heating operation, wherein when all the filamentous materials are heated by the preheating device, a gap between every two adjacent filamentous materials is 3-10 mm and is distributed in parallel, the speed of the preheating device is 1-5 m/s, the temperature of the filamentous materials after being heated by the preheating device is 50-100 ℃, and the preheated filamentous materials are conveyed to the twisting device by a traction mechanism;
thirdly, performing stranding operation, namely after the second step is finished, when each preheated filamentous material is subjected to stranding operation through stranding equipment, firstly selecting at least one of the filamentous materials as a central matrix, then using the rest filamentous materials as a coating, and coating the outer surface of the filamentous material of the central matrix by the coating in a spiral manner around the axis of the central matrix to finish the stranding operation to prepare a pretwisted material;
fourthly, secondary preheating, namely preheating the pretwisted material prepared in the third step again through preheating equipment under the driving of traction equipment to finally obtain a finished product twisted material, and then directly conveying the finished product twisted material to 3D printing equipment, wherein the speed of the pretwisted material passing through the preheating equipment is 1-5 m/s, and the temperature of the filamentous material heated through the preheating equipment is 60-120 ℃;
the heat source of the preheating equipment is an irradiation heat source, the traction force of each filamentous material passing through the preheating equipment in the second step is 70% -90% of the tensile strength of the filamentous material, and the diameter of the central substrate is 1-5 times that of the filamentous material serving as the coating layer when one filamentous material serving as the central substrate is used in the third step; when the number of the filiform materials serving as the central matrix is two or more, the filiform materials serving as the central matrix are twisted with each other, in the third step, when one filiform material serving as the coating layer is provided, the filiform material serving as the coating layer is directly spirally coated on the outer surface of the central matrix around the axis of the central matrix, the screw pitch of the filiform material serving as the coating layer is 0 to 5 to 10 times of the diameter of the filiform material serving as the coating layer, in the third step, when two or more filiform materials serving as the coating layer are respectively coated on the outer surface of the central matrix spirally around the axis of the central matrix, and the filiform materials serving as the coating layer are respectively distributed in the same layer of the outer surface of the central matrix in the radial direction or distributed in at least two layers of the outer surface of the central matrix in the radial direction, and in the third step, the filiform materials serving as, the filiform materials as the coating are spirally coated on the outer surface of the central matrix around the axis of the central matrix, the thread pitch is 0 to 5 to 10 times of the diameter of the filiform materials as the coating, the filiform materials as the coating are mutually distributed in parallel or are mutually crossed and woven to be distributed in a net structure, when the filiform materials as the coating are distributed in at least two layers of the outer surface of the central matrix in the third step, the spiral directions of the adjacent two layers of the filiform materials as the coating around the central matrix are opposite, each layer comprises at least one filiform material as the coating, when the filiform materials as the coating in each layer are single, the filiform materials around the axis of the central matrix are spirally coated on the outer surface of the central matrix, and the thread pitch is 0 to 5 to 10 times of the diameter of; when the number of the filiform materials used as the coating layers in each layer is two or more, the filiform materials used as the coating layers are spirally coated on the outer surface of the central matrix around the axis of the central matrix, the thread pitch is 0 to 5 to 10 times of the diameter of the filiform materials used as the coating layers, and the filiform materials used as the coating layers are mutually distributed in parallel or are mutually crossed and woven to form a reticular structure.
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| JP7434869B2 (en) * | 2019-12-12 | 2024-02-21 | 富士フイルムビジネスイノベーション株式会社 | modeling equipment |
| WO2021127329A1 (en) * | 2019-12-20 | 2021-06-24 | Universal Fibers, Inc. | Multifilament feedstocks for fused deposition modeling |
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