CN112008973B - Rapid forming device and system for ultra-high molecular weight polymer and control method thereof - Google Patents
Rapid forming device and system for ultra-high molecular weight polymer and control method thereof Download PDFInfo
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- CN112008973B CN112008973B CN201910467488.1A CN201910467488A CN112008973B CN 112008973 B CN112008973 B CN 112008973B CN 201910467488 A CN201910467488 A CN 201910467488A CN 112008973 B CN112008973 B CN 112008973B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
- B29C64/106—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material
- B29C64/118—Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using filamentary material being melted, e.g. fused deposition modelling [FDM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/245—Platforms or substrates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/307—Handling of material to be used in additive manufacturing
- B29C64/321—Feeding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B33Y50/00—Data acquisition or data processing for additive manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
Abstract
The invention discloses a rapid forming device and a rapid forming system for an ultra-high molecular weight polymer and a control method thereof, wherein the rapid forming device comprises a storage bin and a spray head arranged at the bottom of the storage bin; the heating module is used for forming a heating area for heating the ultra-high molecular weight polymer in the bin along the vertical direction of the bin; the temperature of the heating area gradually increases from the top of the storage bin to one side of the bottom of the storage bin; the heating area is divided into a first heating area, a second heating area and a third heating area sequentially from the top of the storage bin to one side of the bottom of the storage bin. The invention provides a rapid forming device, a rapid forming system and a rapid forming control method for an ultra-high molecular weight polymer, wherein the ultra-high molecular weight polymer is heated to a molten state and extruded for forming, the rapid forming device has the advantages of large span of a temperature-adaptive interval, strong environmental adaptability, material saving, flexible and changeable printing forming structure, and the like, and in addition, the expansion deformation of the ultra-high molecular weight polymer in the molten state is avoided by arranging a heating area with gradient change.
Description
Technical Field
The invention belongs to the technical field of high molecular material forming, and particularly relates to a rapid forming device and system for an ultra-high molecular weight polymer and a control method thereof.
Background
3D printing is a popular concept, a rapid prototyping technique, which is generated in the late 80 s of the 20 th century. The technology integrates multiple technologies such as mechanical engineering, material engineering, numerical control technology, laser technology and the like, and adopts a material accumulation method to manufacture a part prototype. The principle is that a digital model is formed by modeling through Computer Aided Design (CAD) or computer animation modeling software, then a three-dimensional model is decomposed into two-dimensional sections layer by layer, and printing materials are piled layer by layer and solidified through software and a numerical control system, so that a solid product is manufactured. More mainstream methods include stereolithography (Stereo Lithography Apparatus, SLA), layered solid fabrication (LAMINATED OBJECT MANUFACTURING, LOM), selective laser sintering (SELECTIVE LASER SINTERING, LS), fusion forming (Fused Deposition Modeling, FDM), and the like. Compared with the traditional manufacturing method, the 3D printing technology can neglect the appearance complexity of the product parts; the manufacturing is rapid, the synchronous implementation of product design and mold production can be realized, the research and development efficiency is improved, and the design period is shortened; the utilization rate of raw materials is extremely high and is close to 100 percent. Based on the advantages, the technology is increasingly widely applied to industries such as automobiles, household appliances, communication, aviation, industrial modeling, medical treatment, archaeology and the like.
Materials used for 3D printing range from plastic materials such as photosensitive resin, ABS-like, wax-like, glass fiber and the like to metal materials such as stainless steel, aluminum alloy, iron-nickel alloy, cobalt-chromium-molybdenum alloy and the like, the types of the materials are more abundant than the prior art, but the materials are still different from the materials used for traditional manufacturing, and as a new generation engineering plastic, the ultra-high molecular weight polymer has a plurality of excellent performances such as high specific strength, good toughness, wear resistance, corrosion resistance, low temperature resistance, stress cracking resistance, impact resistance, adhesion resistance, self lubrication and the like, so the ultra-high molecular weight polymer plays an increasingly important role in the aspects of industrial and agricultural production, medicine, national defense construction and the like. However, such materials have extremely high molecular weights, and very long, entangled molecular chains, with the melt being in a highly elastic state, with a melt index of approximately zero; the molding temperature range is narrow, and the molding is easy to oxidize and degrade; the critical shear rate is low, and the friction coefficient is small, so that the molding processing is difficult.
In recent years, the laser technology has the advantages of high precision, high speed, short period, no need of a die and the like, so that the application development in the field of material processing, especially in the rapid forming of high polymer materials is rapid, but the following problems are found in practical application and research:
The first, ultra-high molecular weight polymer is in a discrete packed powder state prior to shaping, with a large number of voids between the powder particles. Since air is a poor conductor of heat, it can affect the conduction of heat during the molding process. In addition, the fluidity of the polymer in a molten state is extremely poor, the relative position change among particles is small, a large number of air holes exist in the formed part, the compactness is low, and the forming quality is seriously affected.
The second and ultra-high molecular weight polymers have narrower processing temperature range and are more sensitive to laser energy density and sintering position temperature. When the laser energy density is high, the temperature of the sintering position is too high, so that the polymer is oxidized and decomposed, and a chain scission reaction occurs to form double bonds, free radicals and the like. Breaking of molecular bonds may result in reduced molded article properties. Meanwhile, molecular chains are closely related to crystallinity, and the crystallinity affects rigidity, tensile strength, hardness, heat resistance, solubility resistance, air tightness, chemical corrosion resistance and the like of the product, and sometimes even directly leads to the rejection of molded parts.
The Chinese patent with the application number of CN201410181568.8 discloses a high-molecular material ultraviolet laser 3D printing method and a device for precisely controlling the temperature. The device comprises: the device comprises a constant temperature box, a laser head, a non-contact temperature monitoring device, a scanning vibrating mirror, a processing platform, a powder paving device, a processed material and a computer control system. The laser head adopts a double-tube-core structure, the inner tube and the outer tube are coaxially fixed, one or more gradual-change neutral filter plates are fixed between the two tubes, and the laser transmittance of the filter plates is reduced from the inner tube to the radial direction of the appearance.
The Chinese patent with the application number of CN2015128966. X discloses a device and a method for realizing laser rapid molding of an ultra-high molecular weight polymer, wherein the device comprises: a laser emitting end emitting a laser beam for irradiating and melting the ultra-high molecular weight polymer powder; a press roll for compacting the ultra-high molecular weight polymer at the laser beam sintering position; the infrared thermometer is used for monitoring the temperature change of the sintering position; the signal processing device is used for feeding back a process parameter adjustment signal to the main control system according to the temperature signal; and the main control system is used for controlling the laser emitting end and the press roller according to the process parameter adjustment signal.
Although the prior art proposes a rapid molding method for ultra-high molecular weight polymers, many problems still exist in practical application, for example, the prior art adopts a laser sintering powder bed mode to realize rapid molding of ultra-high molecular weight polymers, laser of the method can only provide a temperature difference of 20-30 degrees, materials with a large span temperature difference can not be printed, meanwhile, the powder laying mode wastes too much materials, and in most cases, new and old powder is mixed for use, the quality of molded workpieces is influenced, in addition, the laser sintering powder bed mode has strict requirements on environmental temperature, printing can only be realized in a greenhouse or a closed space, and the powder laying method can not print a closed structure, so that the application occasions are limited.
Therefore, it is necessary to improve the defects and drawbacks of the prior art, and to provide a device, a system and a control method for rapid forming of an ultra-high molecular weight polymer, which adopt a high-temperature melting mode to heat the ultra-high molecular weight polymer to a molten state and extrude and form the ultra-high molecular weight polymer.
The present invention has been made in view of this.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the disadvantages of the prior art and to provide a rapid prototyping apparatus for ultra-high molecular weight polymers which overcomes or at least partially solves the above problems.
It is another object of the present invention to provide a rapid prototyping system for ultra high molecular weight polymers.
It is still another object of the present invention to provide a method for controlling a rapid prototyping system for ultra-high molecular weight polymers.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: a rapid prototyping apparatus for ultra-high molecular weight polymer comprises
The spray head is arranged at the bottom of the storage bin;
the heating module is used for forming a heating area for heating the ultra-high molecular weight polymer in the bin along the vertical direction of the bin;
the temperature of the heating area gradually increases from the top of the storage bin to one side of the bottom of the storage bin.
The heating area is sequentially divided into at least a first heating area, a second heating area and a third heating area from the top of the storage bin to one side of the bottom of the storage bin;
The heating temperatures of the first heating area, the second heating area and the third heating area are sequentially increased;
In one embodiment, the heating of the ultra-high molecular weight polymer is uniform in any of the first heating zone, the second heating zone, and the third heating zone;
In one embodiment, the ultra-high molecular weight polymer is in a molten state within the third heating zone;
in one embodiment, the ratio of the heating range of the first heating zone to the sum of the heating ranges of the second heating zone and the third heating zone is between 1:3 and 1:1;
In one embodiment, the heating range ratio of the second heating zone and the third heating zone is between 1:5 and 1:1;
In one embodiment, the heating temperature of the heating module is between 100 ℃ and 450 ℃;
In one embodiment, the heating module is a heating wire.
In addition, in the case of the optical fiber,
The temperature detection device is arranged in the third heating area of the heating module and is used for detecting the temperature of the heating module;
in one embodiment, the spray head is heated by heat transfer from the heating module or a heating device provided to the spray head.
A rapid prototyping system for ultra-high molecular weight polymers comprises
The rapid prototyping apparatus for ultra-high molecular weight polymer as claimed in any one of the above;
The workbench is used for containing the ultra-high molecular weight polymer extruded by the rapid prototyping device;
The transmission system drives the rapid prototyping device and the workbench to move in a three-dimensional space;
And the control system is respectively connected with the rapid prototyping device, the workbench and the transmission system, and stores three-dimensional shape information of the molded workpiece.
The control method of the ultra-high molecular weight polymer rapid prototyping system further comprises the following steps of
Step 101, after filling ultra-high molecular weight polymer into a bin of the rapid prototyping device, placing the rapid prototyping device at a working position and connecting the rapid prototyping device with the transmission system;
Step 102, selecting a required formed workpiece in the control system, and setting printing parameters;
step 103, the three-dimensional body of the workpiece to be formed is sliced by the control system, converted into two-dimensional layered cross section information, and the motion track scanned layer by layer along the height direction is obtained;
Step 104, starting a heating module of the rapid prototyping device, detecting the temperature of the heating module in real time by a temperature detection device, and transmitting data to the control system;
Step 105, when the temperature of the heating module reaches a preset temperature, the control system transmits a motion track of a two-dimensional layered cross section of the formed workpiece to the transmission system, and the transmission system moves the rapid prototyping device to an initial position;
Step 106, a feeding rod moves from the top to the bottom of the bin to push the ultra-high molecular weight polymer in the bin, and the ultra-high molecular weight polymer in a molten state is extruded from a nozzle;
Step 107, the transmission system prints the layer according to the motion trail of the two-dimensional layered cross section of the formed workpiece;
Step 108, after the layer is printed, the transmission system moves the rapid prototyping device to the initial position and moves the rapid prototyping device or the workbench to the next layer along the height direction;
Step 109, repeating steps 106 to 108 until the integral printing of the molded workpiece is completed;
step 110: and taking out the workpiece to obtain the final formed workpiece.
Wherein, in step 104,
The heating module is provided with a heating area outside the bin of the rapid prototyping device;
The heating area is divided into at least a first heating area, a second heating area and a third heating area sequentially from the top to the bottom of the bin;
The heating temperatures of the first heating area, the second heating area and the third heating area are sequentially increased;
In one embodiment, the heating of the ultra-high molecular weight polymer is uniform in any of the first heating zone, the second heating zone, and the third heating zone;
In one embodiment, the ultra-high molecular weight polymer is in a molten state within the third heating zone;
in one embodiment, the heating module is a heating wire;
In one embodiment, the preset temperature in step 105 is in the range of 100 ℃ to 450 ℃.
In addition, step 104 includes
Step 1041, heating the workbench until the set temperature is reached;
In one embodiment, the set temperature of the platen is 20 ℃ to 200 ℃.
And, step 108 also includes
Step 1081, using at least two rapid prototyping apparatuses for containing ultra-high molecular weight polymers;
When the ultra-high molecular weight polymer in one of the rapid prototyping devices is consumed, the control system starts the other rapid prototyping devices which also contain the ultra-high molecular weight polymer, and jumps back to step 104 to start execution;
Meanwhile, in the switching process of the rapid prototyping devices in step 1081, each rapid prototyping device has at least two modes of height displacement and horizontal displacement;
The rapid prototyping device after the ultra-high molecular weight polymer is consumed firstly performs the height displacement and then performs the horizontal displacement, thereby realizing the departure from the working position;
the rapid prototyping device containing the ultra-high molecular weight polymer firstly performs horizontal displacement, and performs height displacement after reaching the working position.
In addition, the ultra-high molecular weight polymer is one or a combination of a plurality of wires, powder and granules.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects: the invention adopts a high-temperature melting mode to heat the ultra-high molecular weight polymer to a molten state and extrude and form the ultra-high molecular weight polymer, and has the characteristics of large span of a temperature interval, strong environmental adaptability, material saving, flexible and changeable printing and forming structure and the like; in addition, by arranging the heating area with gradient change, the problem that the ultrahigh molecular weight polymer in a molten state expands and deforms and cannot be extruded is avoided.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.
In the drawings:
FIG. 1 is a schematic view of a first assembly of a rapid prototyping apparatus for ultra-high molecular weight polymers of the present invention;
FIG. 2 is a second schematic assembly view of the rapid prototyping apparatus for ultra-high molecular weight polymers of the present invention;
FIG. 3 is a schematic view of a third assembly of the rapid prototyping apparatus for ultra-high molecular weight polymers of the present invention;
FIG. 4 is a first schematic view of a silo of the rapid prototyping apparatus of the present invention;
FIG. 5 is a second schematic view of a silo of the rapid prototyping apparatus of the present invention;
FIG. 6 is a first schematic view of a rapid prototyping apparatus assembly in accordance with the present invention;
FIG. 7 is a second schematic view of the rapid prototyping apparatus of the present invention assembled.
In the figure: 1. a rapid prototyping apparatus; 2. a storage bin; 201. a first annular portion; 202. a second annular portion; 3. a spray head; 4. a feed rod; 5. a heating module; 501. a first heating zone; 502. a second heating region; 503. a third heating zone; 6. an auxiliary heating device; 7. a roll-on assembly; 701. a press roller; 702. a fixing seat; 8. a temperature detecting device; 9. a work table; 10. a transmission system; 11. and a control system.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Fig. 1 to 3 are first, second and third schematic diagrams of a rapid prototyping apparatus 1 for ultra-high molecular weight polymers according to the present invention, it can be seen from the figures that a control system 11, a transmission system 10, a workbench 9 and the rapid prototyping apparatus 1 form a device for shaping ultra-high molecular weight polymers, and the control system 11 includes a computer, and electrical components and related devices required when the rapid prototyping apparatus 1 is connected to a device through a data line or a wireless network device.
Further, it can be seen that the invention is further provided with an auxiliary heating device 6 and a temperature detecting device 8, wherein the auxiliary heating device 6 heats the ultra-high molecular weight polymer extruded from the spray head 3 for the second time, so that the ultra-high molecular weight polymer can keep a temperature easy to be molded in the printing and molding process, the holding time is long enough, the problems of unstable molding structure, unstable adhesion between ultra-high molecular weight polymers and the like caused by excessive heat exchange are avoided, meanwhile, the temperature extruded by the spray head 3 can be accurately measured by arranging the temperature detecting device 8 outside the rapid prototyping device 1, and the temperature detecting device 8 is also arranged inside the storage bin 2 and close to the heating module 5.
Still further, because the ultra-high molecular weight polymer between different printing layers has poor adhesion due to the physical properties of the ultra-high molecular weight polymer, an external force is applied to the ultra-high molecular weight polymer during secondary heating, so that the ultra-high molecular weight polymer between different printing layers is more firmly adhered, and as shown in fig. 3, a rolling assembly 7 is arranged near the spray head 3, the rolling assembly 7 comprises a pressing roller 701 and a fixing seat 702, the pressing roller 701 can roll on the printing layers, and further the compaction adhesion between the ultra-high molecular weight polymer extruded by the spray head 3 and the ultra-high molecular weight polymer of the upper layer is realized, so that the printed structure is more stable.
Still further, the heating of the nozzle 3 is achieved by the heat transfer of the heating module 5 or the heating device of the nozzle 3 itself, specifically, when the ultra-high molecular weight polymer passes through the nozzle 3, the temperature of the nozzle 3 must be close to the temperature of the third heating zone 503, so that the condition when the ultra-high molecular weight polymer is extruded from the nozzle 3 can be ensured by setting the temperature of the nozzle 3, the heating of the nozzle 3 can be achieved by the heat transfer of the heating module 5, or the heating device is set on the nozzle 3, and the nozzle 3 is directly heated, so that the nozzle 3 reaches the temperature of the third heating zone 503.
Fig. 4 and 5 are first and second schematic views of the bin 2 of the rapid prototyping apparatus 1 according to the present invention, mainly show the internal structure of the bin 2, and as can be seen from fig. 4 and 5, the bin 2 according to the present invention is divided into two structures, mainly distinguished by the installation position of the heating module 5, in fig. 4, the heating module 5 is installed outside the bin 2, in fig. 5, the heating module 5 is installed inside the bin 2, and it can be seen that the heating module 5 is formed with at least three heating areas in the height direction of the bin 2, namely, a first heating area 501, a second heating area 502 and a third heating area 503, each of which has different temperatures, and since the ultra-high molecular weight polymer is easily expanded after being heated to a molten state, and the extrusion strength is large, the extrusion of the ultra-high molecular weight polymer in the molten state cannot be realized by the conventional extruder, the invention sets three heating areas of the bin 2, so that after the ultra-high molecular weight polymer is added into the bin 2, a preheating process is obtained, the ultra-high molecular weight polymer can still obtain a good heating environment in the bin 2 while avoiding expansion of the ultra-high molecular weight polymer and increase of extrusion pressure caused by sudden temperature rise, the ultra-high molecular weight polymer is heated to a molten state in the third heating area 503, the ultra-high molecular weight polymer in the molten state in the third heating area 503 is extruded from the nozzle 3 by the ultra-high molecular weight polymer in the second heating area 502 and the first heating area 501, the proportion of the ultra-high molecular weight polymer in the molten state in the bin 2 is small, and enough preheating space is provided, so that the problem of expansion of the ultra-high molecular weight polymer in the molten state is avoided while the extrusion is ensured.
Further, the heating area of the heating module is divided into the first heating area 501, the second heating area 502 and the third heating area 503, in practical application, according to the properties of different ultra-high molecular weight polymers, the heating area of the heating module can be more than three or less than three according to the needs, and the main purpose of the heating area is to prevent the ultra-high molecular weight polymer from entering into a molten state too early, so that the ultra-high molecular weight polymer in the molten state expands during extrusion, and the problem of incapability of extrusion is caused.
Fig. 6 and fig. 7 are a first schematic diagram and a second schematic diagram of the rapid prototyping device 1 assembled in a combined manner, wherein the combination situation of the rapid prototyping device 1 in the switching process is mainly shown, when one of the rapid prototyping devices 1 consumes the ultra-high molecular weight polymer, the control system 11 starts other rapid prototyping devices 1 containing the ultra-high molecular weight polymer, as can be seen from the figures, each rapid prototyping device 1 at least has two modes of high displacement and horizontal displacement, the high displacement transmission system 10 is realized, the horizontal displacement is realized through the internal combination mode of the rapid prototyping device 1, the horizontal displacement of fig. 6 is mainly realized through the translation mode, the horizontal displacement of fig. 7 is mainly realized through the rotation, the rapid prototyping device 1 after the ultra-high molecular weight polymer is consumed firstly carries out the high displacement, then carries out the horizontal displacement, and further realizes the leaving from the working position, the rapid prototyping device 1 containing the ultra-high molecular weight polymer firstly carries out the horizontal displacement, after the working position, the high displacement is carried out, the high displacement is realized, and the rapid prototyping device 1 is only driven by the horizontal displacement transmission device is not realized in the invention, and the invention is not shown in the field, and how the invention is more than the invention is realized.
The invention provides a rapid prototyping device 1 of ultra-high molecular weight polymer and its operation method, adopt the way of high-temperature melting, heat ultra-high molecular weight polymer to the molten state and extrude and shape, it is large to adapt to the temperature interval span, it is strong to the environment adaptability, save the material, print characteristics such as being flexible and changeable of the shaping structure, in addition, through setting up the heating area that is the gradient change, have avoided the ultra-high molecular weight polymer expansion deformation in the molten state, unable problem of extruding, through adding the supplementary heating of laser, have avoided the ultra-high molecular weight polymer heat loss of extruding is great at the same time, the adhesion is bad, the problem of poor shaping quality; and by additionally arranging the rolling assembly 7, the ultra-high molecular weight polymer is rolled and compacted, so that the problems of poor viscosity of the ultra-high molecular weight polymer and weak adhesion between layers are avoided.
Example 1
As shown in fig. 1 to 5, a rapid prototyping apparatus 1 for ultra-high molecular weight polymer according to the present embodiment includes a silo 2 having a chamber for containing ultra-high molecular weight polymer therein; the spray head 3 is arranged at the bottom of the stock bin 2; a feeding rod 4, which is provided to be capable of extending into or out of the top of the silo 2, for extruding the ultra-high molecular weight polymer in a molten state from the nozzle 3 to the silo 2; and the heating module 5 is formed into a heating area with gradually increasing temperature from the top of the storage bin 2 to the side of the bottom spray head 3.
Wherein, the heating area is divided into a first heating area 501, a second heating area 502 and a third heating area 503 from the top to the bottom of the bin 2; the ultra-high molecular weight polymer in the first heating region 501 is in an original state when being put into the silo 2; the ultra-high molecular weight polymer in the second heating region 502 is in a transition state from the original state to the molten state; the ultra-high molecular weight polymer in the third heating region 503 is in a molten state.
Example two
As shown in fig. 1 to 5, the present embodiment is based on the first embodiment, and the ratio of the heating range of the first heating region 501 to the sum of the heating ranges of the second heating region 502 and the third heating region 503 is between 1:3 and 1:1 in the rapid prototyping apparatus 1 for ultra-high molecular weight polymer according to the present embodiment; the heating range ratio of the second heating zone 502 and the third heating zone 503 is between 1:5 and 1:1.
Example III
As shown in fig. 1 to 5, the present embodiment is based on the first embodiment or the second embodiment, and the heating module 5 of the present embodiment is a heating wire matched with the bin 2; the heating temperature of the heating module 5 is between 100 ℃ and 450 ℃.
Example IV
As shown in fig. 1 to 5, this embodiment is based on any one of the first to third embodiments, and further includes a temperature detecting device 8 disposed in the third heating region 503 of the heating module 5, for detecting the temperature of the heating module 5, and as shown in fig. 2, the temperature detecting device 8 is also disposed outside the rapid prototyping device 1, for detecting the temperature of the ultra-high molecular weight polymer based on the shower head 3 and the ultra-high molecular weight polymer formed by printing.
Example five
As shown in fig. 1 to 5, this embodiment is based on any one of the first to fourth embodiments, in which the bin 2 is a hollow structure, and the hollow structure forms a chamber for containing an ultra-high molecular weight polymer; the feeding rod 4 is of a rod-shaped structure and is matched with the hollow structure of the storage bin 2; the spray head 3 is arranged at the bottom of the hollow structure; the heating module 5 is annularly arranged outside the bin 2.
Or the storage bin 2 comprises a first annular part 201 and a second annular part 202 sleeved outside the first annular part 201; the gap between the first annular portion 201 and the second annular portion 202 forms a chamber for holding an ultra-high molecular weight polymer; the feeding rod 4 is in a rod-shaped structure and is matched with the gap shape between the first annular part 201 and the second annular part 202; the spray head 3 is connected with the second annular part 202; the heating module 5 is disposed inside the first annular portion 201 of the silo 2.
Fig. 4 and fig. 5 are a first schematic diagram and a second schematic diagram of a bin 2of the rapid forming device 1 according to the present invention, mainly show the internal structure of the bin 2, and as can be seen from fig. 4 and fig. 5, the bin 2 is divided into two structures, mainly distinguished by the installation position of the heating module 5, in fig. 4, the heating module 5 is installed outside the bin 2, in fig. 5, the heating module 5 is installed inside the bin 2, and it can be seen that three heating areas are formed in the height direction of the bin 2, namely, a first heating area 501, a second heating area 502 and a third heating area 503, respectively, and the temperatures of each heating area are different, and after the ultra-high molecular weight polymer is heated to a molten state, the ultra-high molecular weight polymer is easily expanded, and is extruded to be strong, and the extrusion of the ultra-high molecular weight polymer in the molten state cannot be realized by a conventional extruder.
Example six
The present embodiment is based on the fifth embodiment, and the feeding rod 4 in the present embodiment is a plunger rod structure or a threaded rod structure.
Example seven
As shown in fig. 1 to 5, this embodiment is based on any one of the above embodiments one to six, and the apparatus 1 for rapid prototyping of an ultra-high molecular weight polymer according to this embodiment further includes an auxiliary heating device 6 for performing secondary heating on the ultra-high molecular weight polymer extruded by the nozzle 3; the laser emitted by the auxiliary heating device 6 is an annular hollow beam; the annular hollow light beam emitted by the auxiliary heating device 6 can be emitted to the position of the ultrahigh molecular weight polymer extruded by the nozzle 3; the hollow part of the annular hollow light beam is not smaller than the diameter of the ultra-high molecular weight polymer extruded by the corresponding nozzle 3, and after the ultra-high molecular weight polymer is sent out by the nozzle 3, the ultra-high molecular weight polymer exchanges heat with the external environment, so that the external temperature of the ultra-high molecular weight polymer is lower, the internal temperature is higher, and the ultra-high molecular weight polymer among different printing layers is not easy to adhere due to the property of the ultra-high molecular weight polymer.
Fig. 1 to 3 are a first, a second and a third schematic diagrams of a rapid prototyping apparatus 1 for ultra-high molecular weight polymers according to the present invention, and it can be seen from the figures that the present invention is further provided with an auxiliary heating device 6 and a temperature detecting device 8, wherein the auxiliary heating device 6 heats the ultra-high molecular weight polymers extruded from the spray head 3 for the second time, so that the ultra-high molecular weight polymers can maintain a temperature easy to be shaped during the printing and shaping process, and the holding time is long enough, thereby avoiding the problems of unstable shaping structure and unstable adhesion between the ultra-high molecular weight polymers caused by excessive heat exchange, and simultaneously, the temperature extruded from the spray head 3 can be accurately measured by arranging the temperature detecting device 8 outside the rapid prototyping apparatus 1, and the temperature detecting device 8 is also arranged inside the stock bin 2 at a position close to the heating module 5.
Example eight
As shown in fig. 1 to 5, this embodiment is based on any one of the above embodiments one to seven, and the apparatus 1 for rapid prototyping of an ultra-high molecular weight polymer according to this embodiment further includes a rolling assembly 7 for compacting the ultra-high molecular weight polymer extruded from the nozzle 3; the rolling assembly 7 comprises a pressing roller 701, and the surface of the ultra-high molecular weight polymer extruded by the spray head 3 rolls to compact the ultra-high molecular weight polymer; a fixing base 702 for fixing the pressing roller 701; the fixing base 702 can move in the height direction of the silo 2.
Fig. 1 to 3 are a first, a second and a third schematic diagrams of a rapid prototyping apparatus 1 for ultra-high molecular weight polymers according to the present invention, and it can be seen from the figures that, due to the physical properties of the ultra-high molecular weight polymers, the ultra-high molecular weight polymers between different printing layers have poor adhesion, so that an external force is applied to the ultra-high molecular weight polymers between different printing layers while heating the ultra-high molecular weight polymers for the second time, so that the ultra-high molecular weight polymers between different printing layers are firmly adhered, and in fig. 3, a rolling assembly 7 is disposed near the spray head 3, wherein the rolling assembly 7 comprises a pressing roller 701 and a fixing seat 702, and the pressing roller 701 is capable of rolling on the printing layers, thereby realizing the compression adhesion between the ultra-high molecular weight polymers extruded by the spray head 3 and the ultra-high molecular weight polymers of the previous layer, so that the printed structure is more stable.
Example nine
This embodiment is based on any one of the first to eighth embodiments, and the method for rapid prototyping of an ultra-high molecular weight polymer in this embodiment includes,
A workbench 9 for accommodating the ultra-high molecular weight polymer extruded by the rapid prototyping device 1;
the transmission system 10 drives the rapid prototyping device 1 and the workbench 9 to move in a three-dimensional space;
the control system 11 is respectively connected with the rapid prototyping device 1, the workbench 9 and the transmission system 10 and stores three-dimensional shape information of a molded workpiece;
and also comprises
Step 101, after filling ultra-high molecular weight polymer into the bin 2 of the rapid prototyping device 1, placing the rapid prototyping device 1 at a working position and connecting with the transmission system 10;
step 102, selecting a required formed workpiece in the control system 11, and setting printing parameters;
Step 103, the three-dimensional body of the workpiece to be formed is sliced and processed through the control system 11, and is converted into two-dimensional layered cross section information, and a motion track scanned layer by layer along the height direction is obtained;
Step 104, starting the heating module 5 of the rapid prototyping device 1, detecting the temperature of the heating module 5 in real time by the temperature detection device 8, and transmitting data to the control system 11;
Step 105, when the temperature of the heating module 5 reaches a preset temperature, the control system 11 transmits a motion track of a two-dimensional layered cross section of the molded workpiece to the transmission system 10, and the transmission system 10 moves the rapid prototyping device 1 to an initial position;
step 106, the feeding rod 4 moves from the top to the bottom of the bin 2 to push the ultra-high molecular weight polymer in the bin 2, and the ultra-high molecular weight polymer in a molten state is extruded from the nozzle 3;
Step 1061, the control system 11 starts an auxiliary heating device 6, and the auxiliary heating device 6 heats the ultra-high molecular weight polymer extruded by the nozzle 3 for the second time;
step 107, the transmission system 10 prints the layer according to the motion track of the two-dimensional layered cross section of the formed workpiece;
step 1071, compacting the ultra-high molecular weight polymer extruded by the nozzle 3 by the rolling assembly 7 along with the movement of the rapid prototyping device 1;
Step 108, after printing the layer, the transmission system 10 moves the rapid prototyping device 1 to the initial position, and moves the rapid prototyping device 1 or the workbench 9 to the next layer along the height direction;
Step 109, repeating steps 106 to 108 until the integral printing of the molded workpiece is completed;
step 110: and taking out the workpiece to obtain the final formed workpiece.
Examples ten
In step 104 of the present embodiment, a heating area is formed by the heating module 5 corresponding to the bin 2 of the rapid prototyping apparatus 1; the heating area is divided into at least a first heating area 501, a second heating area 502 and a third heating area 503 in sequence from the top to the bottom of the bin 2; the ultra-high molecular weight polymer in the first heating region 501 is in an original state when being put into the silo 2; the ultra-high molecular weight polymer in the second heating region 502 is in a transition state from the original state to the molten state; the ultra-high molecular weight polymer in the third heating region 503 is in a molten state; the ratio of the heating range of the first heating zone 501 to the sum of the heating ranges of the second heating zone 502 and the third heating zone 503 is between 1:3 and 1:1; the heating range ratio of the second heating zone 502 and the third heating zone 503 is between 1:5 and 1:1.
Example eleven
In this embodiment, based on the foregoing ninth or tenth embodiment, step 104 further includes step 1041 of heating the table 9 to a set temperature; the set temperature of the table 9 is 20 ℃ to 200 ℃.
Example twelve
This embodiment is based on any one of the foregoing embodiments nine to eleventh, in which the preset temperature in step 105 is in a range of 100 ℃ to 450 ℃; the ultra-high molecular weight polymer is one or the combination of a plurality of wires, powder and granules.
Example thirteen
In this embodiment, based on any one of the foregoing ninth to twelfth embodiments, in step 1061 of this embodiment, the laser light emitted by the auxiliary heating device 6 is an annular hollow beam; the annular hollow light beam emitted by the auxiliary heating device 6 can be emitted to the position of the ultrahigh molecular weight polymer extruded by the nozzle 3; the hollow part of the annular hollow light beam is not smaller than the diameter of the ultra-high molecular weight polymer extruded by the corresponding spray head 3.
Examples fourteen
In this embodiment, based on any one of the foregoing ninth to thirteenth embodiments, in the step 1071, the rolling assembly 7 includes a pressing roller 701 for compacting the ultra-high molecular weight polymer by rolling on the surface of the ultra-high molecular weight polymer extruded from the nozzle 3; a fixing base 702 for fixing the pressing roller 701; the fixing base 702 can move in the height direction of the silo 2.
Example fifteen
The present embodiment is based on any one of the foregoing ninth to fourteen embodiments, wherein the step 108 further includes a step 1081 of arranging at least two rapid prototyping apparatuses 1 for holding ultra-high molecular weight polymers; when the ultra-high molecular weight polymer in one of the rapid prototyping apparatuses 1 is consumed, the control system 11 starts the other rapid prototyping apparatuses 1 containing ultra-high molecular weight polymer, and jumps back to step 104 to start execution.
Examples sixteen
The present embodiment is based on the fifteen embodiments described above, where in the switching process of the rapid prototyping apparatus 1 in step 1081, each rapid prototyping apparatus 1 has at least two modes of height displacement and horizontal displacement; the rapid prototyping apparatus 1 after the ultra-high molecular weight polymer is consumed performs the height displacement first and then performs the horizontal displacement, thereby realizing the departure from the working position; the rapid prototyping apparatus 1 containing the ultra-high molecular weight polymer performs horizontal displacement first, and performs height displacement after reaching the working position.
Fig. 6 and fig. 7 are a first schematic diagram and a second schematic diagram of the rapid prototyping device 1 assembled in a combined manner, wherein the combination situation of the rapid prototyping device 1 in the switching process is mainly shown, when one of the rapid prototyping devices 1 consumes the ultra-high molecular weight polymer, the control system 11 starts other rapid prototyping devices 1 containing the ultra-high molecular weight polymer, as can be seen from the figures, each rapid prototyping device 1 at least has two modes of high displacement and horizontal displacement, the high displacement transmission system 10 is realized, the horizontal displacement is realized through the internal combination mode of the rapid prototyping device 1, the horizontal displacement of fig. 6 is mainly realized through the translation mode, the horizontal displacement of fig. 7 is mainly realized through the rotation, the rapid prototyping device 1 after the ultra-high molecular weight polymer is consumed firstly carries out the high displacement, then carries out the horizontal displacement, and further realizes the leaving from the working position, the rapid prototyping device 1 containing the ultra-high molecular weight polymer firstly carries out the horizontal displacement, after the working position, the high displacement is carried out, the high displacement is realized, and the rapid prototyping device 1 is only driven by the horizontal displacement transmission device is not realized in the invention, and the invention is not shown in the field, and how the invention is more than the invention is realized.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the application and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (12)
1. A rapid prototyping device of ultra-high molecular weight polymer, characterized in that: for rapid prototyping of ultra-high molecular weight polymers comprising
The device comprises a storage bin (2) and a spray head (3) arranged at the bottom of the storage bin (2);
A heating module (5) which forms a heating area for heating the ultra-high molecular weight polymer in the bin (2) along the vertical direction of the bin (2);
The rolling assembly (7) is arranged near the spray head (3) and is used for compacting the ultrahigh molecular weight polymer extruded by the spray head (3);
The heating area is divided into at least a first heating area (501), a second heating area (502) and a third heating area (503) from the top of the storage bin (2) to the bottom side in sequence; the heating temperatures of the first heating region (501), the second heating region (502) and the third heating region (503) are sequentially increased;
-the ratio of the heating range of the first heating zone (501) to the sum of the heating ranges of the second heating zone (502) and the third heating zone (503) is between 1:3 and 1:1; -a heating range ratio of the second heating zone (502) and the third heating zone (503) is between 1:5 and 1:1;
The heating modules (5) are heating wires which are distributed in the bin (2) at intervals along the vertical direction, and ultrahigh molecular weight polymers are uniformly heated by the heating wires in any heating area among the first heating area (501), the second heating area (502) and the third heating area (503);
the distribution density of heating wires in the first heating area (501), the second heating area (502) and the third heating area (503) is gradually increased;
the ultra-high molecular weight polymer in the first heating area (501) is in an original state when being put into the storage bin (2); the second heating region (502) heats the ultra-high molecular weight polymer to a transition state from an original state to a molten state; the third heating zone (503) heats the ultra-high molecular weight polymer to a molten state.
2. The rapid prototyping apparatus for ultra-high molecular weight polymers according to claim 1, wherein: the heating temperature of the heating module (5) is between 100 ℃ and 450 ℃.
3. The rapid prototyping apparatus for ultra-high molecular weight polymers according to claim 1, wherein: the device also comprises a temperature detection device (8) which is arranged in the third heating area (503) of the heating module (5) and is used for detecting the temperature of the heating module (5).
4. A rapid prototyping apparatus for ultra-high molecular weight polymers as claimed in claim 3, wherein: the spray head (3) is used for heating the spray head (3) through heat transfer of the heating module (5) or a heating device arranged on the spray head (3).
5. A rapid prototyping system for ultra-high molecular weight polymers, characterized by: comprising
A rapid prototyping apparatus for ultra high molecular weight polymers as claimed in any one of claims 1 to 4;
a workbench (9) for containing the ultra-high molecular weight polymer extruded by the rapid prototyping device (1);
the transmission system (10) drives the rapid prototyping device (1) and the workbench (9) to move in a three-dimensional space;
and the control system (11) is respectively connected with the rapid prototyping device (1), the workbench (9) and the transmission system (10) and stores three-dimensional shape information of the molded workpiece.
6. A control method of a rapid prototyping system of ultra-high molecular weight polymer as set forth in claim 5, which is characterized in that: comprising
Step 101, after filling ultra-high molecular weight polymer into a bin (2) of the rapid prototyping device (1), placing the rapid prototyping device (1) at a working position and connecting the rapid prototyping device with the transmission system (10);
102, selecting a required formed workpiece in the control system (11), and setting printing parameters;
step 103, the three-dimensional body of the workpiece to be formed is sliced by the control system (11), converted into two-dimensional layered cross section information, and the motion track scanned layer by layer along the height direction is obtained;
Step 104, starting a heating module (5) of the rapid prototyping device (1), detecting the temperature of the heating module (5) in real time by a temperature detection device (8), and transmitting data to the control system (11);
Step 105, when the temperature of the heating module (5) reaches a preset temperature, the control system (11) transmits a motion track of a two-dimensional layered cross section of a formed workpiece to the transmission system (10), and the transmission system (10) moves the rapid prototyping device (1) to an initial position;
106, a feeding rod (4) moves from the top of the bin (2) to the bottom to push the ultra-high molecular weight polymer in the bin (2), and the ultra-high molecular weight polymer in a molten state is extruded from a nozzle (3);
Step 107, the transmission system (10) prints the layer according to the motion track of the two-dimensional layered cross section of the formed workpiece;
Step 108, after the layer is printed, the transmission system (10) moves the rapid prototyping device (1) to the initial position and moves the rapid prototyping device (1) or the workbench (9) to the next layer along the height direction;
Step 109, repeating steps 106 to 108 until the integral printing of the molded workpiece is completed;
step 110: and taking out the workpiece to obtain the final formed workpiece.
7. The control method of the rapid prototyping system of ultra-high molecular weight polymer of claim 6, wherein:
The preset temperature in step 105 is in the range of 100 ℃ to 450 ℃.
8. The control method of the rapid prototyping system of ultra-high molecular weight polymer of claim 6, wherein:
Also included in step 104 is
Step 1041, heating the workbench (9) until the set temperature.
9. The control method of the rapid prototyping system of ultra-high molecular weight polymer of claim 8, wherein:
The set temperature of the working table (9) is 20-200 ℃.
10. The control method of an ultra-high molecular weight polymer rapid prototyping system of claim 6 wherein:
Step 108 also includes
Step 1081, namely at least two rapid prototyping devices (1) for containing ultra-high molecular weight polymers;
When the ultra-high molecular weight polymer in one of the rapid prototyping apparatuses (1) is consumed, the control system (11) starts the other rapid prototyping apparatuses (1) which also contain ultra-high molecular weight polymer, and jumps back to step 104 to start execution.
11. The control method of an ultra-high molecular weight polymer rapid prototyping system of claim 10 wherein:
During the switching process of the rapid prototyping apparatuses (1) in step 1081, each rapid prototyping apparatus (1) has at least two modes of height displacement and horizontal displacement;
The rapid prototyping device (1) after the ultra-high molecular weight polymer is consumed firstly performs the height displacement and then performs the horizontal displacement, thereby realizing the departure from the working position;
The rapid prototyping device (1) containing the ultra-high molecular weight polymer firstly performs horizontal displacement, and performs height displacement after reaching the working position.
12. The control method of the rapid prototyping system of ultra-high molecular weight polymer of claim 6, wherein: the ultra-high molecular weight polymer is one or the combination of a plurality of wires, powder and granules.
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| CN109732899A (en) * | 2019-03-18 | 2019-05-10 | 青岛五维智造科技有限公司 | Polymer matrix composite high-resolution 3D printing device and its working method |
| CN210617306U (en) * | 2019-05-31 | 2020-05-26 | 中国科学院化学研究所 | Rapid forming device and rapid forming system for ultrahigh molecular weight polymer |
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