CN204712469U - Three-dimensional fast shaping equipment - Google Patents
Three-dimensional fast shaping equipment Download PDFInfo
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- CN204712469U CN204712469U CN201520376978.8U CN201520376978U CN204712469U CN 204712469 U CN204712469 U CN 204712469U CN 201520376978 U CN201520376978 U CN 201520376978U CN 204712469 U CN204712469 U CN 204712469U
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/221—Machines other than electrographic copiers, e.g. electrophotographic cameras, electrostatic typewriters
- G03G15/224—Machines for forming tactile or three dimensional images by electrographic means, e.g. braille, 3d printing
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- Manufacturing & Machinery (AREA)
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Abstract
The utility model relates to three-dimensional fast shaping equipment, and the three-dimensional fast shaping equipment that the utility model provides comprises the first developing device, and the first developing device comprises the first developer, and the first developer is UV photocuring developer; Second developing device comprises the second developer; Annular transfer belt is for accepting the first developer and the second developer; Electric charge generating apparatus can make annular transfer belt produce electric charge; Print platform for accepting the first developer in annular transfer belt and the second developer, thus forms thin layer; UV photocuring light source, for irradiating thin layer, makes the first developer solidify; Heater carries out preheating to print platform; Heating pressuring flat device heats thin layer and flattens process.Backing material is very easy to remove, and can not cause damage to the surface of the molding structure of three-dimensional body; Can energy ezpenditure be reduced, shorten the time of UV photocuring; The developer reducing the first thin layer is due to the uneven warpage that causes and the blockage effect of being heated.
Description
Technical field
The utility model relates to three-dimensional fast shaping equipment, specifically, relates to a kind of three-dimensional fast shaping equipment electronic imaging principle being applied to increasing material manufacture method.
Background technology
Three-dimensional (3D) rapid shaping, be also referred to as and increase material manufacture, general principle produces three-dimensional body by printing or lay continuous print material layer.Standby or the three-dimensional printer of three-dimensional fast shaping is by changing the three dimensional computer modeling of object and producing a series of cross-sectional slice and carry out work, and then, print each section, one on top of the other, thus produce final three-dimensional body.
The type that the method for three-dimensional fast shaping mainly comprises is: stereolithography or photocuring (Stereolithography, SLA), layer separated growth (Laminated object manufacturing, LOM), selective laser sintering (Selective laser sintering, SLS), fused glass pellet (Fused deposition modeling, FDM).
In three-dimensionally shaped process, some unsettled places need with the support of backing material as overhanging portion, material curable after spraying such as can be selected as wax etc., this scheme can cause three-dimensional fast shaping equipment to need to prepare different materials, process is complicated, and the process of shaping rear separation is very complicated.In addition, when adopting FDM scheme to carry out backing material printing, because three-dimensional body and supporting construction thereof all adopt printhead to print, owing to being limited to the size of printing nozzle, the three-dimensional body printed and the precision of supporting construction not high, easily stick together between supporting construction and the contact surface of molding structure effect, when also easily causing the contact surface of shaped object to be damaged after removal supporting construction.
Electrophotographic image forming technology be by developing device developer at medium as imaging on paper, developing device critical piece comprises photosensitive drums, charging rod, laser scanner, developing roller and useless powder scraping blade, charging roller, can also comprise powder storehouse and waste powder hopper in addition.The structure of the parts of electrophotographic image forming technology and the operation principle between them can the application reference number Chinese invention patent application that is CN201110220048.X, CN201410222958.5, CN201310137076.4, CN201010237520.6, CN201410182632.4, CN201110248333.2, CN200910266892.9 and the patent No. be the Chinese utility model patent of CN200720059274.3, CN200820046406.3.In view of the development relative maturity of electrophotographic image forming technology, and its imaging effect on planar medium is very excellent, has therefore engendered some schemes in prior art and this technology is applied in three-dimensional fast shaping.Such as, application number is that the Chinese invention patent application of CN201410568730.1 discloses a kind of developer, three-dimensional printer and 3 D-printing method.
Be disclose a kind of rapid three dimensional printing forming equipment in the Chinese utility model patent of CN201320350051.8 at application number, i.e. three-dimensional printer, it has the first photosensitive drums, the second photosensitive drums, bearing ink pad, transfer belt and light source, and bearing ink pad is positioned at the below of transfer belt along vertical.Electrophotographic image forming technology in the existing laser printer of this three-dimensional fast shaping equipment utilization, at the first photosensitive drums autochthonal one-tenth first developer image, the first developer image to be transferred on bearing ink pad by transfer belt and to be solidified into solid layer through illumination; At the second photosensitive drums autochthonal one-tenth second developer image, the second developer image is transferred to region bearing ink pad is positioned at outside solid layer by transfer belt.Repeat above-mentioned steps, the solid layer successively printed composition three-dimensional body, the second developer image composition powder accumulation body, forms the supporting construction of three-dimensional body.
Can the developer of illumination curing be moulding material owing to adopting, can not the developer of illumination curing be backing material, and adopt electrophotographic image forming technology, make the very thin thickness printing every layer of three-dimensional body and supporting construction, the precision of raising 3 D-printing.But, such scheme forms multiple thin layer owing to have employed UV photocuring developer after solidification, the surface being so just difficult to each thin layer ensureing formation is smooth flat, thus good reference datum cannot be provided for the thin layer of follow-up printing, the temperature of print platform is ambient temperature in addition, when to when being cured heating above thin layer, the lower surface of the first thin layer, namely the temperature of the contact surface of the first thin layer and print platform is lower, so just easily cause warpage or blockage effect, thus cause printing precision to reduce.
Utility model content
The purpose of this utility model is to provide a kind of three-dimensional fast shaping equipment.
The three-dimensional fast shaping equipment that the utility model provides comprises the first developing device, and the first developing device comprises the first developer, and the first developer is UV photocuring developer; Second developing device comprises the second developer; Annular transfer belt is for accepting the first developer and the second developer; Electric charge generating apparatus is used for producing electric charge to annular transfer belt; Print platform for accepting the first developer in annular transfer belt and the second developer, thus forms thin layer; UV photocuring light source, for irradiating thin layer, makes the first developer solidification; Heater carries out preheating to print platform; Heating pressuring flat device heats thin layer and flattens process.
From such scheme, by the first developer of UV photocuring as moulding material, and choose the second developer of common carbon dust as backing material, which improves the precision of 3 D-printing object, and be very easy to remove at the shaping rear support material of three-dimensional body, damage can not be caused to the surface of the molding structure of three-dimensional body; Usually, UV Light Curing needs to consume higher energy, and correspondingly extend hardening time, and the pre-heat effect of heater and heating applanation process make the temperature of the first developer reach uniform temperature fast, the mode of heating of the generation of heater is more prone to than UV light, therefore this scheme can reduce energy ezpenditure, and shortens the time of UV photocuring; By the pressing process to every skim, can make thin layer under accepting, during the developer of skim, provide a good planar support, and avoid the generation of war ping effect; To the pre-heat treatment of print platform, the developer reducing the first thin layer is due to the uneven warpage that causes and the blockage effect of being heated.
A preferred scheme is, the softening temperature of the second developer is higher than the softening temperature of the first developer; The heating-up temperature of heating pressuring flat device higher than the first developer softening temperature but lower than the softening temperature of the second developer.
From such scheme, more than the heating temperatures of the first developer to softening point, energy ezpenditure can be reduced like this in UV Light Curing, shorten hardening time, and keep the second developer not soften, such scheme can also avoid the effect of sticking together between the particle of the second developer, and adhesion effect can make backing material become difficulty with being separated of moulding material.
A preferred scheme is that heater is arranged on print platform, and heater is heating plate, and heating plate has multiple heating region worked alone.
From such scheme, for different printed materials, heating plate can provide different heating-up temperatures in the zones of different of print platform, such as, sets different heating-up temperatures to the region of backing material and moulding material, thus reduces energy ezpenditure.
A preferred scheme is, electric charge generating apparatus comprises the first electric charge maker and the second electric charge maker; First electric charge maker is for controlling the movement of the first developer, and the second electric charge maker is for controlling the movement of the second developer.
From such scheme, realize developer position transfer among different components by the principle of charge attraction or repulsion, convenient and reliable, simple.
A preferred scheme is, the color of the first developer is red yellow or blue or black or purple or green.
From such scheme, form the three-dimensional body of shades of colour, formed precision is high.
A preferred scheme is, the heating-up temperature of heater is set in 50 DEG C to 90 DEG C.
Three-dimensional fast shaping method, comprises the following steps, and obtains the forming data of the every one deck after three-dimensional body slicing delamination; The first developer is made to form the first thin layer by development; First thin layer UV illumination is penetrated, makes the first developer solidification; And then form subsequent layer by development, subsequent layer UV illumination is penetrated, thus the first developer on subsequent layer is solidified; Before UV illumination is penetrated, preheating is carried out to the first thin layer; Before UV illumination is penetrated, the first thin layer and subsequent layer are heated and flattens process.
From such scheme, usually, UV Light Curing needs to consume higher energy, and correspondingly extend hardening time, and the pre-heat effect of heater and heating applanation process make the temperature of the first developer reach uniform temperature fast, the mode of heating of the generation of heater is more prone to than UV light, and visible this scheme can reduce energy ezpenditure, and shortens the time of UV photocuring.
A preferred scheme is, the first thin layer also comprises the second developer produced by development, and under UV illumination is penetrated, the second developer does not change.
A preferred scheme is, subsequent layer also comprises the second developer produced by development, and under UV illumination is penetrated, the second developer does not solidify.
From such scheme, the second developer as the backing material of three-dimensional model, can which improves the precision of 3 D-printing object, and is very easy to remove in the shaping rear support structure of three-dimensional body, can not cause damage to the surface of molding structure.
Further preferred scheme is, the softening temperature of described second developer is higher than the softening temperature of described first developer.
A preferred scheme is attracted each other by the charges of different polarity or mutually repelled by same sex electric charge and control the transfer of the first developer and the second developer.
Accompanying drawing explanation
Fig. 1 is the first example structure figure of the utility model three-dimensional fast shaping equipment.
Fig. 2 is the state diagram that the first embodiment heating pressuring flat device of the utility model three-dimensional fast shaping equipment acts on print platform.
Fig. 3 is the state diagram that the first embodiment heating pressuring flat device of the utility model three-dimensional fast shaping equipment acts on print platform.
Fig. 4 is the flow chart of the first embodiment forming method of the utility model three-dimensional fast shaping equipment.
Fig. 5 is the schematic cross-section that the embodiment of the utility model three-dimensional fast shaping equipment forms the first thin layer.
Fig. 6 is the schematic cross-section that the embodiment of the utility model three-dimensional fast shaping equipment forms another kind of first thin layer.
Fig. 7 is the schematic diagram of a kind of I-shaped three-dimensional body of embodiment printing of the utility model three-dimensional fast shaping equipment.
Fig. 8 is the backing material of I-shaped three-dimensional body in Fig. 7 and the accumulation schematic diagram of moulding material.
Fig. 9 is the schematic diagram of the backing material of I-shaped three-dimensional body in Fig. 7 and the another kind of accumulation mode of moulding material.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Detailed description of the invention
First embodiment:
As shown in Figure 1, the three-dimensional fast shaping equipment of the present embodiment comprises the first developing device 10, second developing device 20, annular transfer belt 30, UV photocuring light source 40, heating pressuring flat device 50, heater 60 and print platform 70.
First developing device 10 comprises the powder storehouse 12 of accommodation first developer 11, developer roll 13, charging roller 14, photosensitive drums 15, cleaning doctor 16 and waste powder hopper 17.First developer 11 is UV photocuring developer, and the first developer 11 sticks together between its particle and acts on and form an overall structure under the irradiation of UV light.Second developing device 20 also comprises accommodation second developer 21 powder storehouse, other parts are identical with the first developing device 10, second developer 21 is common development carbon dust, and it does not change under the irradiation of UV light, i.e. can not stick together between the particle of the second developer 21 effect.Wherein, the softening temperature of the second developer 21 is higher than the softening temperature of the first developer 11.
First developing device 10 and the second developing device 20 are arranged on same level position, their lower position is provided with annular transfer belt 30, annular transfer belt 30 can be rotated circlewise under the drive of motor, and this rotation can be clockwise or counterclockwise rotate.Annular transfer belt 30 is for accepting the first developer 11 and the second developer 21.
The primary importance of annular transfer belt 30 is provided with the first electric charge maker 32, arranges the second electric charge maker 34 in the second place.First electric charge maker 32 can produce positive charge or negative electrical charge, and the second electric charge maker 34 also can produce positive charge or negative electrical charge, and the first electric charge maker 32 and the second electric charge maker 34 can independently work.
The lower position of annular transfer belt 30 is provided with print platform 70, and print platform 70 is for accepting the first developer 11 and the second developer 21 in annular transfer belt 30.Under the effect of the control unit of 3 D-printing equipment, can there is the relative motion of vertical direction in print platform 70 relative to annular transfer belt 30.Print the preproduction phase, there is between print platform 70 and annular transfer belt 30 certain intervals distance, this spacing distance at least should be greater than the thickness of a thin layer of the first developer 11 and the formation of the second developer 21, after the printing completing a thin layer, print platform 70 is relative to the thickness of annular transfer belt 30 away from a thin layer, until complete the printing of whole three-dimensional body, spacing distance is preferably 1.2 times of thickness of thin layer to 1.5 times.
Print platform 70 is provided with a heater 60, and heater 60 pairs of print platforms 70 carry out preheating.Heater 60 can be heating board structure, and heating plate has multiple heating region worked alone.Print platform can increase support chamber 73, and the inner surface of the second developer 21 in the end of print platform 70 with support chamber 73 as backing material contacts, and support chamber 73 can be played a supporting role to backing material.
UV photocuring light source 40, for irradiating thin layer, makes the first developer 11 solidify.Heating pressuring flat device 50 heats each thin layer and flattens process, and heating pressuring flat device 50 is a cylinder, and the existing heating function of cylinder also has the effect of pressing first thin layer.Heating and the scheme flattened can avoid the war ping effect of three-dimensional body on the one hand, can also provide good plane base on the other hand for the accumulation of next laminagraphy agent.UV photocuring light source 40 forms an overall structure with heating pressuring flat device 50, and it can move relative to print platform 70 in the horizontal direction under the control of the control unit.As shown in Figure 2, after print platform 70 being formed the first thin layer 71, heater 60 has carried out warm to the first thin layer 71, then heat pressuring flat device 50 to carry out pressing and heating on the first thin layer 71, it can be adopted in two ways, first kind of way is that heating pressuring flat device 50 slowly moves ahead, and when the first developer 11 reaches more than softening temperature, then carries out UV photocuring.The second way is that heating pressuring flat device 50 repeatedly heats, presses, solidifies on the first thin layer 71, namely heat pressuring flat device 50 repeatedly to move between two ends of print platform 70, until complete the solidification of the first thin layer 71, this scheme can make the plane of thin layer more smooth.As shown in Figure 3, when after multiple thin laminas to certain thickness, the heater 60 on print platform 70 just loses the heating effect to thin layer 72, and heating pressuring flat device 50 pairs of thin layers 72 still heat and flatten process.
When carrying out three-dimensionally shaped operation, as shown in Figure 4, first, perform step S1, obtain the forming data of the every one deck needing the three-dimensional body printed, the acquisition of forming data can carry out modeling, hierarchy slicing and obtain forming data by computer to three-dimensional body, also can import in three-dimensional fast shaping equipment by the forming data of outside insertion equipment as storage card directly three-dimensional body, or obtain forming data by wireless transmission method.
Then, perform step S2, obtain the first thin layer, namely by the first developing device 10 the first developer 11 in powder storehouse 12 successively by developer roll 13, photosensitive drums 15 and transferring in annular transfer belt 30.Produce the electrical electric charge different with the first developer 11 by the first electric charge maker 32, thus make the first developer 11 closely be adsorbed on the outer surface of annular transfer belt 30.By the second developing device 20, second developer 21 is transferred in annular transfer belt 30, produce the electric charge electrically different with the second developer 21 by the second electric charge maker 34, thus make the second developer 21 closely be adsorbed on the outer surface of annular transfer belt 30.First developer 11 and the second developer 21 are transferred to after in annular transfer belt 30 by photosensitive drums, form the first thin layer of three-dimensional body.After annular transfer belt 30 rotates, first thin layer moves to the top of print platform 70, now the first electric charge maker 32 produces identical with the first developer 11 electrical, make the first developer 11 transfer on print platform 70 by annular transfer belt 30 according to exclusion principle, second electric charge maker 34 produces identical with the second developer 21 electrical, thus the second developer 21 is also transferred on print platform 70.Thus, the first thin layer is transferred on print platform 70 by annular transfer belt 30.Carry out preheating by heater 60 pairs of print platforms 70, preheating can before the first thin layer transfer to print platform 70 or afterwards.
Then, perform step S3, the first thin layer is heated, to flatten and UV illumination is penetrated, the first developer 11 is solidified.
Then, perform step S4, lower skim is formed again by development principle, lower skim includes the first developer 11, and optionally can comprise the second developer 21, because the second developer 21 is backing material, if three-dimensional body does not need backing material at some thin layer, just do not need the accumulation carrying out the second developer 21.
Then, perform step S5, the thin layer UV illumination that step S4 is formed is penetrated, thus the first developer 11 on thin layer is solidified.
Then, forming process is judged, if the shaping of three-dimensional body does not complete, then return step S4 and carry out the shaping of lower skim, if judgment result displays three-dimensional body is shaping complete, then completing print procedure.
After completing print procedure, operating personnel manually can take off three-dimensional body, because backing material is still pulverulence, therefore backing material be very easy to is separated with three-dimensional body, backing material easily reclaims, thus reduce costs, protection of the environment.
Finally it should be noted that, the utility model is not limited to above-mentioned embodiment, and in other embodiments, in one of them thin layer of 3-D. formed body, as shown in Figure 5, the cross section of thin layer 80 can be rectangle, and as shown in Figure 6, cross section 90 can be circular.The region that first developer is formed can be the regular patterns such as triangle 81, also can be irregular pattern 91.As shown in Figure 7, when marker's font three-dimensional body 92, when carrying out the printing of bottom section 93, the first thin layer only needs accumulation first developer as moulding material, and does not need to pile up the second developer as backing material.When print procedure enters central region 94, the first developer as moulding material in every skim, should be piled up, also need to pile up the second developer as backing material.As shown in Figure 8, the cross section of backing material 95 can form rectangular configuration, as shown in Figure 9, the cross section of backing material 96 also can form trapezium structure, the backing material of trapezium structure can prevent three-dimensional body from caving in forming process, thus avoids three-dimensional body to lose support effect causing and print unsuccessfully.The color of the first developer can be red yellow or blue or black or purple or green.
The method obtaining the first developer can by mixing light trigger and sensitising agent in the manufacture process of common developer, and light trigger can be styrax and its derivative, and sensitising agent can be benzophenone, thia anthraquinone.Three-dimensional fast shaping equipment can also be provided with position induction device, position induction device can sense the position whether position of each thin layer is presetting, then the control unit of the Signal transmissions sensed to three-dimensional fast shaping equipment, after there is deviation in the position of one of them thin layer on print platform, just need corresponding adjustment thin layer transfer to the position on print platform, thus improve the formed precision of three-dimensional body.These designs above-mentioned are also within claims of the present utility model.
Claims (5)
1. three-dimensional fast shaping equipment, comprising:
First developing device, comprises the first developer, and described first developer is UV photocuring developer;
Second developing device, comprises the second developer;
Annular transfer belt, for accepting described first developer and described second developer;
Electric charge generating apparatus, for producing electric charge to described annular transfer belt;
Print platform, for accepting described first developer in described annular transfer belt and described second developer, thus forms thin layer;
UV photocuring light source, for irradiating described thin layer, makes described first developer solidification;
It is characterized in that:
Heater, carries out preheating to described print platform;
Heating pressuring flat device, heats described thin layer and flattens process.
2. three-dimensional fast shaping equipment according to claim 1, is characterized in that:
The softening temperature of described second developer is higher than the softening temperature of described first developer; The heating-up temperature of described heating pressuring flat device higher than described first developer softening temperature but lower than the softening temperature of described second developer.
3. three-dimensional fast shaping equipment according to claim 1, is characterized in that:
Described heater is arranged on described print platform, and described heater is heating plate, and described heating plate has multiple heating region worked alone.
4. three-dimensional fast shaping equipment according to claim 1, is characterized in that:
Described electric charge generating apparatus comprises the first electric charge maker and the second electric charge maker;
Described first electric charge maker is for controlling the movement of described first developer, and described second electric charge maker is for controlling the movement of described second developer.
5. the three-dimensional fast shaping equipment according to any one of Claims 1-4, is characterized in that:
The color of described first developer is red yellow or blue or black or purple or green.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376978.8U CN204712469U (en) | 2015-06-03 | 2015-06-03 | Three-dimensional fast shaping equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520376978.8U CN204712469U (en) | 2015-06-03 | 2015-06-03 | Three-dimensional fast shaping equipment |
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| Publication Number | Publication Date |
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| CN204712469U true CN204712469U (en) | 2015-10-21 |
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| CN201520376978.8U Withdrawn - After Issue CN204712469U (en) | 2015-06-03 | 2015-06-03 | Three-dimensional fast shaping equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890241A (en) * | 2015-06-03 | 2015-09-09 | 珠海天威飞马打印耗材有限公司 | Three-dimensional rapid prototyping equipment and prototyping method |
| CN108688153A (en) * | 2018-06-26 | 2018-10-23 | 珠海天威飞马打印耗材有限公司 | Print head, three-dimensional printer and its Method of printing |
-
2015
- 2015-06-03 CN CN201520376978.8U patent/CN204712469U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890241A (en) * | 2015-06-03 | 2015-09-09 | 珠海天威飞马打印耗材有限公司 | Three-dimensional rapid prototyping equipment and prototyping method |
| WO2016192626A1 (en) * | 2015-06-03 | 2016-12-08 | 珠海天威飞马打印耗材有限公司 | Three-dimensional rapid prototyping device and prototyping method |
| CN108688153A (en) * | 2018-06-26 | 2018-10-23 | 珠海天威飞马打印耗材有限公司 | Print head, three-dimensional printer and its Method of printing |
| CN108688153B (en) * | 2018-06-26 | 2024-04-19 | 珠海天威增材有限公司 | Printing head, three-dimensional printer and printing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151021 Effective date of abandoning: 20170606 |
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| AV01 | Patent right actively abandoned |