The rack mount configurations of parallel arm three-dimensional printer
Technical field
The utility model belongs to three-dimensionally shaped technical field, particularly relates to a kind of rack mount configurations of parallel arm three-dimensional printer.
Background technology
Three-dimensional printing technology, design a model as source with Computerized three-dimensional, discrete and the numerical control molding system by software hierarchy, utilize the mode such as laser beam, hot melt nozzle successively to be piled up by the special materials such as metal dust, ceramic powders, plastics, cell tissue to cohere, final superposition is shaping, produces entity products.3D solid is become several two dimensional surfaces by 3 D-printing, producing, greatly reducing the complexity of manufacture by also successively superposing material processed.This Digitized manufacturing pattern directly just can generate the part of any shape from computer graphics data.Fusion sediment moulding (FDM) technology is a mainstream technology in three-dimensional printing technology, and FDM technology is that cad model is divided into cross section very thin from level to level, generates the two-dimensional geometry information controlling 3 D-printing machine nozzle motion track.The heating head of three-dimensional printer is heated to critical condition heat-fusible materials (ABS resin, nylon, wax etc.), present quasi-fluid properties, under the control of the computer, along the two-dimensional geometry information movement track that CAD determines, the material of half flow regime squeezes out by extruder head, solidifies the thin layer forming contour shape.After one deck, fallen by vertical lift system and newly form layer, be cured.Pile up bonding so layer by layer, form the 3D solid of this model from bottom to top.
One of key issue of the three-dimensional printer of application FDM technology is formed precision problem, affects a lot of because have of formed precision, the problem etc. comprising frame strength, transmission stability and cool heat-fusible materials.Frame strength deficiency can cause printer to occur the change of fitted position in the course of the work, impacts formed precision; Intensity deficiency also can cause transmission stability not high, and vibrations appear in printhead walking process mid frame, and printing precision is reduced; Heat-fusible materials cools too slow after extruder head is extruded, and there will be heat-fusible materials and is naturally elongated by gravity, causes the model printed to occur the problem of being out of shape.So, for improving printing precision, needing badly and existing three-dimensional printer is improved.
Utility model content
The utility model, in order to solve weak point of the prior art, provides that a kind of compact conformation, intensity are high, transmission stability good, shortening heat melt material cool time, promotes the rack mount configurations of the parallel arm three-dimensional printer of printing precision.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the rack mount configurations of parallel arm three-dimensional printer, comprise the base in equilateral triangle structure, base is vertically provided with three support columns respectively at three drift angle places, three support column top levels are provided with installing plate, installing plate is provided with raw material extruder, vertically slide inside every root support column and be provided with coaster, line inductance electromotor driving mechanism is provided with between support column and coaster, mutually isostructural parallel arm is all hinged with inside each coaster, the lower end of parallel arm is hinged with extrudes workbench, the center of extruding workbench is provided with extruder head, the entrance point of extruder head is connected with the discharging opening of raw material extruder by mother tube, extruder head outer wrap having heaters,
Vertically slideway is provided with in the middle part of support column, the pilot hole be communicated with slideway is vertically provided with inside support column, line inductance electromotor driving mechanism comprises the Connection Block be connected with coaster, Connection Block is provided with the permanent magnet and grating reading head that are positioned at slideway, and support column is provided with the grating scale corresponding with grating reading head and the induction coil corresponding with permanent magnet position from top to bottom along slideway inwall;
Base sidepiece is provided with electric control gear, and electric control gear is connected with raw material extruder, heater, turbofan, semiconductor chilling plate and line inductance electromotor driving mechanism respectively.
Described base is provided with the fixed head between three support columns.
Adopt technique scheme, the base side of parallel arm three-dimensional printer is provided with cold wind generation device, cold wind generation device comprises turbofan, housing and semiconductor chilling plate, semiconductor chilling plate is located in housing, the chill surface of semiconductor chilling plate is connected with the fin being positioned at housing, the face that heats of semiconductor chilling plate is connected with the outer fin stretching out housing, the radiator fan that external fin carries out dispelling the heat is provided with outside housing, the side of housing is connected with the air outlet of turbofan, the opposite side of housing is connected with wind scooper, the outlet of wind scooper is connected with cooling jet by cool air hose, cooling jet is located at by connecting plate to be extruded bottom workbench, the air outlet of cooling jet is towards the outlet of extruder head, cool air hose is along the lateral of a wherein support column is connected with cooling jet through after installing plate from top to bottom.
Parallel arm three-dimensional printer has following beneficial effect:
1, the line inductance electromotor driving mechanism often arranged between root support column with corresponding coaster, line inductance electromotor driving mechanism adopts electromagnetic induction principle to realize rectilinear motion, coaster moves up and down more steady, thus guarantee that parallel arm drive is extruded workbench and run more steady, adopt the positional readings structure that grating reading head is corresponding with grating scale in addition, print result is more accurate.
2, the cold air that the chill surface of semiconductor chilling plate produces is spread by interior fin, brushing through turbofan, cold air sprays to the exit of extruder head successively by wind scooper, cool air hose and cooling jet, the material of half flow regime squeezes out by extruder head, brute force through cold wind cools, and quick solidification forms the thin layer of contour shape.So just avoid cool time long, the situation causing heat molten type material to produce distortion due to self gravitation effect occurs.The heat that the face that heats of semiconductor chilling plate produces is through the heat radiation of outer fin and brushing through radiator fan, and radiating effect strengthens greatly.
In sum, the utility model modern design, compact conformation, transmission stability are high, cool in time the heat-fusible materials extruded, and the product printed there will not be distortion, and printing precision improves greatly.
Accompanying drawing explanation
Fig. 1 is the perspective view of parallel arm three-dimensional printer;
Fig. 2 is the planar structure schematic diagram of parallel arm three-dimensional printer;
Fig. 3 is the enlarged drawing at A place in Fig. 1;
Fig. 4 is the enlarged drawing at B place in Fig. 2;
Fig. 5 is C-C sectional view in Fig. 2.
Detailed description of the invention
As Figure 1-Figure 5, parallel arm three-dimensional printer, comprise the base 1 in equilateral triangle structure, base 1 is vertically provided with three support columns 2 respectively at three drift angle places, three support column 2 top levels are provided with installing plate 3, installing plate 3 is provided with raw material extruder 4, base 1 side is provided with cold wind generation device 5, vertically slide inside every root support column 2 and be provided with coaster 6, line inductance electromotor driving mechanism is provided with between support column 2 and coaster 6, mutually isostructural parallel arm 7 is all hinged with inside each coaster 6, the lower end of parallel arm 7 is hinged with extrudes workbench 8, the center of extruding workbench 8 is provided with extruder head 9, the entrance point of extruder head 9 is connected with the discharging opening of raw material extruder 4 by mother tube 10, extruder head 9 outer wrap having heaters 11,
Cold wind generation device 5 comprises turbofan 12, housing 13 and semiconductor chilling plate 14, semiconductor chilling plate 14 is located in housing 13, the chill surface of semiconductor chilling plate 14 is connected with the fin 15 being positioned at housing 13, the face that heats of semiconductor chilling plate 14 is connected with the outer fin 16 stretching out housing 13, the radiator fan 17 that external fin 16 carries out dispelling the heat is provided with outside housing 13, the side of housing 13 is connected with the air outlet of turbofan 12, the opposite side of housing 13 is connected with wind scooper 18, the outlet of wind scooper 18 is connected with cooling jet 20 by cool air hose 19, cooling jet 20 is located at by connecting plate 30 to be extruded bottom workbench 8, the air outlet of cooling jet 20 is towards the outlet of extruder head 9, cool air hose 19 is along the lateral of a wherein support column 2 is connected with cooling jet 20 through after installing plate 3 from top to bottom,
Slideway 21 is vertically provided with in the middle part of support column 2, the pilot hole 22 be communicated with slideway 21 is vertically provided with inside support column 2, line inductance electromotor driving mechanism comprises the Connection Block 23 be connected with coaster 6, Connection Block 23 is provided with the permanent magnet 24 and grating reading head 25 that are positioned at slideway 21, and support column 2 is provided with the grating scale 26 corresponding with grating reading head 25 and the induction coil 27 corresponding with permanent magnet 24 position from top to bottom along slideway 21 inwall.
Base 1 sidepiece is provided with electric control gear 29, and electric control gear 29 is connected with raw material extruder 4, heater 11, turbofan 12, semiconductor chilling plate 14 and line inductance electromotor driving mechanism respectively.
Base 1 is provided with the fixed head 28 between three support columns 2.
The line inductance electromotor driving mechanism arranged between every root support column 2 with corresponding coaster 6, line inductance electromotor driving mechanism adopts electromagnetic induction principle to realize rectilinear motion (identical with the principle of linear electric motors), coaster 6 moves up and down more steady, thus guarantee that parallel arm 7 drive is extruded workbench 8 and run more steady, adopt the positional readings structure that grating reading head 25 is corresponding with grating scale 26 in addition, print result is more accurate.
The cold air that the chill surface of semiconductor chilling plate 14 produces is spread by interior fin 15, through brushing of turbofan 12, cold air sprays to the exit of extruder head 9 successively by wind scooper 18, cool air hose 19 and cooling jet 20, the material of half flow regime squeezes out by extruder head 9, brute force through cold wind cools, and quick solidification forms the thin layer of contour shape.So just avoid cool time long, the situation causing heat molten type material to produce distortion due to self gravitation effect occurs.The heat that the face that heats of semiconductor chilling plate 14 produces is through the heat radiation of outer fin 16 and brushing through radiator fan 17, and radiating effect strengthens greatly.
The present embodiment not does any pro forma restriction to shape of the present utility model, material, structure etc.; every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all belong to the protection domain of technical solutions of the utility model.