阅读说明：本技术 一种新型彩色3d打印机 (Novel colored 3D printer ) 是由 曾念龙 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种新型彩色3D打印机,包括打印机底座、设置于底座两侧的竖直支架、设置于底座一侧的控制器、设置于支架上端且相对支架前后水平移动的横杆、设置于横杆上且能相对横杆长度方向水平移动的喷头座,底座上设置有一打印平台；所述喷头座上分别固定设置有一主喷头和一副喷头,主喷头在进料口端设置有一混合单元,所述混合单元与RGB三色供料桶和第一树脂供料桶连接,所述副喷头与第二树脂供料桶连接,第一树脂供料桶内树脂为热固性树脂,第二树脂供料桶内树脂为热塑性树脂；本新型彩色3D打印机通过开关控制RGB三色供料桶的混色比例,以达到所需颜色的树脂；副喷头喷出来的热塑性树脂作为可去除的支撑材料,能实现内嵌式无支撑结构的打印成型。(The invention relates to a novel color 3D printer, which comprises a printer base, vertical supports arranged on two sides of the base, a controller arranged on one side of the base, a cross rod arranged at the upper end of the supports and horizontally moving back and forth relative to the supports, and a nozzle base arranged on the cross rod and capable of horizontally moving relative to the length direction of the cross rod, wherein a printing platform is arranged on the base; the RGB three-color resin mixing device comprises a nozzle seat, a RGB three-color feeding barrel, a first resin feeding barrel, a second resin feeding barrel, a main nozzle, a mixing unit, a second nozzle, a second resin feeding barrel, a first resin, a second resin and a third resin, wherein the nozzle seat is fixedly provided with the main nozzle and the auxiliary nozzle respectively; the novel color 3D printer controls the color mixing proportion of the RGB three-color feed barrel through a switch so as to achieve resin with required color; the thermoplastic resin sprayed from the sub-nozzle is used as a removable support material, and the printing and molding of the embedded type unsupported structure can be realized.)

1. The utility model provides a novel colored 3D printer which characterized in that: the printer comprises a printer base (1), vertical supports (2) arranged on two sides of the base (1), a controller (3) arranged on one side of the base (1), a cross rod (4) arranged at the upper end of the supports (2) and capable of horizontally moving back and forth relative to the supports (2), and a nozzle seat (5) arranged on the cross rod (4) and capable of horizontally moving in the length direction relative to the cross rod (4), wherein a printing platform (6) capable of vertically moving relative to the base (1) is arranged on the base (1); the RGB three-color printing ink jet printing head is characterized in that a main spray head (7) and an auxiliary spray head (8) are respectively fixedly arranged on the spray head seat (5), a mixing unit (9) is arranged at the feed inlet end of the main spray head (7), the mixing unit (9) is connected with an RGB three-color feed barrel (10) and a first resin feed barrel (11), the auxiliary spray head (8) is connected with a second resin feed barrel (12), resin in the first resin feed barrel (11) is thermosetting resin, and resin in the second resin feed barrel (12) is thermoplastic resin; RGB three colour feed bucket (10), first resin feed bucket (11), second resin feed bucket (12) are respectively by the switching of a switch (13) control material transport, switch (13) are connected with controller (3) electricity.

2. The novel color 3D printer of claim 1, wherein: the mixing unit (9) comprises a shell (901) with sealed periphery and a stirring rotating shaft (902) vertically arranged in the middle of the shell (901), wherein a plurality of groups of rotating blades (903) are arranged on the upper side of the stirring rotating shaft (902), and spiral mixing blades (904) are arranged on the lower side of the stirring rotating shaft (902); and the lower end outlet of the mixing unit (9) is communicated with the feeding port end of the main spray head (7).

3. The novel color 3D printer of claim 1, wherein: a spiral mixing pipeline (905) is arranged in the mixing unit (9), the upper end of the mixing pipeline (905) is connected with the RGB three-color feeding barrel (10) and the first resin feeding barrel (11), and the outlet at the lower end of the mixing pipeline (905) is communicated with the material inlet end of the main spray head (7); stirring blades (906) which are spirally distributed along the inner wall of the mixing pipeline (905) are arranged in the mixing pipeline (905).

4. The novel color 3D printer of claim 1, wherein: the main spray head (7) and the auxiliary spray head (8) respectively comprise a main barrel (701) with a necking outlet, a fixed head (702) fixedly connected with the outlet end of the main barrel (701), and a sleeve (703) in sliding sleeve joint with the fixed head (702); the sleeve (703) is provided with a single opening, the opening end of the sleeve faces the discharge end of the spray head, a circular truncated cone (704) is arranged at the opening end of the sleeve (703), a round hole is formed in the middle of the circular truncated cone (704), a circle of groove (705) is formed in the middle of the fixing head (702), and the sleeve (703) is in sliding sleeve joint with the groove (705) of the fixing head (702) through the round hole; a compression spring (706) is arranged between the fixed head (702) and the bottom end of the inner cavity of the sleeve (703), and the elasticity of the spring (706) is smaller than the pressure of the inner cavity when the spray head works; a plurality of through holes (707) are distributed at the joint of the main cylinder (701) and the fixed head (702) in an annular array; a circle of groove (708) is formed in the inner wall of the main cylinder (701) at a position corresponding to the fixing head (702), and the diameter of the circular truncated cone (704) is larger than the diameter of an inner cavity of the main cylinder (701) and smaller than the diameter of the groove (708); the length of the groove (705) is smaller than that of the groove (708), the projection of the groove (705) on the inner wall of the main cylinder (701) falls within the outline of the groove (708), and the distance from the upper side end of the groove (705) to the upper side end of the groove (708) is smaller than the thickness of the circular truncated cone (704).

5. The novel color 3D printer of claim 4, wherein: an electrode (709) is arranged at the joint of the fixing head (702) and the spring (706), the spring (706) is made of a resistance wire, and the spring (706) is electrically connected with a circuit arranged in the electrode (709); a heating resistance wire (710) is arranged in the fixing head (702), and the heating resistance wire (710) is electrically connected with a circuit in the electrode (709).

6. The novel color 3D printer of claim 1, wherein: the printing platform (6) is driven to rotate by a first motor (14) at the lower end of the printing platform, the first motor (14) is connected to the top end of a telescopic shaft (15), and the telescopic shaft (15) is driven by a second motor (16) to move up and down in a telescopic manner; the upper surface array of the printing platform (6) is provided with raised dots (601).

7. The novel color 3D printer of claim 1, wherein: a detection platform (17) is arranged on one side of the printing platform (6) of the base (1), a detection carrier (18) is arranged at the upper end of the detection platform (17), and a plurality of sample grooves (181) are arranged on the detection carrier (18) in an array manner; the cross rod (4) is provided with a chromaticity measuring instrument (19) capable of translating relative to the length direction of the cross rod (4), and the chromaticity measuring instrument (19) is electrically connected with the controller (3).

8. The novel color 3D printer of claim 1, wherein: a plurality of UV light sources (20) are arranged on the periphery of the main spray head (7) in a circle in an array mode, the outer wall of a lampshade of each UV light source (20) is connected with a main cylinder (701) of the main spray head (7) in a contact mode, and the outer wall of the lampshade of each UV light source (20) and the main cylinder (701) of the main spray head (7) are made of metal materials with high heat conductivity; and an annular cold air outlet (21) is formed in the periphery of the auxiliary spray head (8) and the UV light source (20) in a circle.

9. The novel color 3D printer of claim 1, wherein: the periphery of the printer is sealed by a box body (22), a fan (23) is arranged at the top end of the box body (22), and an air outlet (24) is arranged at the bottom end of the box body (22); the base (1) is provided with a waste collecting box (25).

Technical Field

The invention relates to the field of 3D printing, in particular to a novel color 3D printer.

Background

3D printing is a technology which is based on a digital model file, utilizes adhesive materials such as powdered metal or plastic and the like, constructs an object in a layer-by-layer printing mode, is applied to the fields of jewelry, shoes, industrial design, architecture, dentistry, medical industry and the like, and has the advantages of short development period, low production cost, high production efficiency and the like; most of the existing 3D printing is monochrome printing, a 3D printer can only print products with raw material colors, and a few of color 3D printers need to dye raw materials firstly and then mix colors through the raw materials with different colors, so that the color mixing effect is poor; and 3D printer can't print inside unsupported embedding structure, consequently can't produce the nested structure product that the structure is complicated.

Disclosure of Invention

In order to solve the technical problem, the invention provides a novel color 3D printer which comprises a printer base, vertical supports arranged on two sides of the base, a controller arranged on one side of the base, a cross rod arranged at the upper end of each support and capable of horizontally moving back and forth relative to the corresponding support, and a nozzle seat arranged on the cross rod and capable of horizontally moving relative to the length direction of the cross rod, wherein a printing platform capable of moving up and down relative to the base is arranged on the base; the RGB three-color resin mixing device comprises a nozzle seat, a RGB three-color feeding barrel, a first resin feeding barrel, a second resin feeding barrel, a main nozzle, a secondary nozzle, a mixing unit, a second resin feeding barrel, a first resin feeding barrel, a second resin feeding barrel and a third resin feeding barrel, wherein the nozzle seat is fixedly provided with the main nozzle and the secondary nozzle; the RGB three-color feeding barrel, the first resin feeding barrel and the second resin feeding barrel are respectively controlled by a switch to be opened and closed during material conveying, and the switches are electrically connected with the controller; the novel color 3D printer controls the color mixing proportion of the RGB three-color feed barrel through the switch to achieve resin with required color, so that the color of the product is diversified; the thermoplastic resin sprayed from the auxiliary nozzle is used as a removable supporting material, and the thermoplastic resin can be removed by heating after the product is molded, so that the printing molding of the embedded type unsupported structure can be realized.

The technical scheme of the invention is as follows:

a novel color 3D printer comprises a printer base, vertical supports arranged on two sides of the base, a controller arranged on one side of the base, a cross rod arranged at the upper end of each support and capable of horizontally moving back and forth relative to the corresponding support, and a nozzle seat arranged on the cross rod and capable of horizontally moving in the length direction relative to the cross rod, wherein a printing platform capable of vertically moving relative to the base is arranged on the base; the RGB three-color resin mixing device comprises a nozzle seat, a RGB three-color feeding barrel, a first resin feeding barrel, a second resin feeding barrel, a main nozzle, a secondary nozzle, a mixing unit, a second resin feeding barrel, a first resin feeding barrel, a second resin feeding barrel and a third resin feeding barrel, wherein the nozzle seat is fixedly provided with the main nozzle and the secondary nozzle; RGB three-colour feed bucket, first resin feed bucket, second resin feed bucket are respectively by the switching control material transport's switching, the switch is connected with the controller electricity.

The mixing unit comprises a shell with sealed periphery and a stirring rotating shaft vertically arranged in the middle of the shell, wherein a plurality of groups of rotating blades are arranged on the upper side of the stirring rotating shaft, and spiral mixing blades are arranged on the lower side of the stirring rotating shaft; and the lower end outlet of the mixing unit is communicated with the material inlet end of the main spray head.

A spiral mixing pipeline is arranged in the mixing unit, the upper end of the mixing pipeline is connected with the RGB three-color feeding barrel and the first resin feeding barrel, and an outlet at the lower end of the mixing pipeline is communicated with a material inlet end of the main spray head; and stirring blades which are spirally distributed along the inner wall of the mixing pipeline are arranged in the mixing pipeline.

The main spray head and the auxiliary spray head respectively comprise a main barrel, a fixed head and a sleeve, wherein the main barrel is arranged at an outlet end in a necking mode, the fixed head is fixedly connected with the outlet end of the main barrel, and the sleeve is in sliding sleeve joint with the fixed head; the sleeve is a single opening, the opening end of the sleeve faces the discharge end of the spray head, a round table is arranged at the opening end of the sleeve, a round hole is formed in the middle of the round table, a circle of grooves are formed in the middle of the fixing head, and the sleeve is in sliding sleeve joint with the grooves of the fixing head through the round hole; a compression spring is arranged between the fixed head and the bottom end of the inner cavity of the sleeve, and the elasticity of the spring is smaller than the pressure of the inner cavity when the spray head works; a plurality of through holes are distributed in an annular array at the joint of the main cylinder and the fixed head; a circle of groove is formed in the inner wall of the main cylinder at a position corresponding to the fixing head, and the diameter of the circular truncated cone is larger than the diameter of the inner cavity of the main cylinder and smaller than the diameter of the groove; the length of the digging groove is smaller than that of the groove, the projection of the digging groove on the inner wall of the main cylinder falls within the shape of the groove, and the distance from the upper side end of the digging groove to the upper side end of the groove is smaller than the thickness of the circular truncated cone.

The fixing head is provided with an electrode at the joint with the spring, the spring is made of a resistance wire, and the spring is electrically connected with a circuit arranged in the electrode; and a heating resistance wire is arranged in the fixing head and is electrically connected with a circuit in the electrode.

The printing platform is driven to rotate by a first motor at the lower end of the printing platform, the first motor is connected to the top end of a telescopic shaft, and the telescopic shaft is driven by a second motor to move in a telescopic mode up and down; and raised dots are arranged on the upper surface of the printing platform in an array manner.

The base is provided with a detection platform on one side of the printing platform, a detection carrier is arranged at the upper end of the detection platform, and a plurality of sample grooves are arranged on the detection carrier in an array manner; the cross bar is provided with a chromaticity measuring instrument capable of translating relative to the length direction of the cross bar, and the chromaticity measuring instrument is electrically connected with the controller.

The outer wall of the lampshade of the UV light source and the main cylinder of the main spray head are made of metal materials with high heat conductivity; and an annular cold air outlet is formed in one circle of the peripheries of the auxiliary spray head and the UV light source.

The periphery of the printer is sealed by a box body, the top end of the box body is provided with a fan, and the bottom end of the box body is provided with an air outlet; the base is provided with a waste collection box.

The invention has the following beneficial effects:

1. the novel color 3D printer controls the color mixing proportion of the RGB three-color feed barrel through the switch to achieve resin with required color, so that the color of the product is diversified; the color mixing mode does not need to dye the raw materials in advance, the color mixing and the dyeing of the raw materials are directly completed in the mixing unit, products with better chroma can be obtained, and the production efficiency is high.

2. The thermoplastic resin sprayed from the auxiliary nozzle is used as a removable supporting material and can be used for supporting the embedded type unsupported structure, and after the product is formed, the thermoplastic resin can be heated and removed, so that the printing and forming of the embedded type unsupported structure are realized.

3. The mixing unit fully mixes the RGB dyeing material injected into the mixing unit with the resin raw material through the plurality of groups of rotating blades on the stirring rotating shaft, and the mixing effect is good; the spiral mixing blade that stirring pivot downside set up can mix the dyeing material and the resin of mixing unit discharge end, has further guaranteed the effect of mixing.

4. According to the second embodiment of the mixing unit, the RGB dyeing material and the resin raw material are mixed through the spiral mixing pipeline, the mixing pipeline is internally provided with the stirring blades which are spirally distributed, the mixing effect is good, the spiral mixing pipeline prolongs the mixing time, and no external power is required.

5. The main spray head and the auxiliary spray head are sleeved with the fixed head in a sliding manner through the sleeve, so that a circulation channel in the main cylinder is closed in time when printing is stopped, and abnormalities such as tail end suck-back, wire drawing and the like are effectively avoided.

6. When the sleeve moves upwards, the round table on the sleeve can be locked with the side wall of the groove and prevent discharging; when the sleeve moves downwards, the sleeve is limited at the lower side end of the groove by the groove, so that the main barrel is prevented from being sealed by a round table on the sleeve; the switch control has simple structure and stable and reliable opening and closing modes.

7. The spring is made of resistance wires, and the flow of resin in the main cylinder can be improved by heating the spring; a heating resistance wire is arranged in the fixing head, and the condensation blockage at the discharge end of the spray head can be effectively avoided through the heating resistance wire.

8. The printing platform is driven to rotate by the first motor, when an arc-shaped workpiece needs to be printed, the printing platform can be directly rotated, the nozzle base is not moved, the printing stability is better, and the arc is smoother; the upper surface array of print platform is provided with protruding site, and the site can increase the adhesion of resin and print platform, avoids printing the dislocation and removes.

9. The chromaticity measuring instrument can test the chromaticity of the resin in the sample tank to judge the accuracy of color mixing, when the chromaticity deviates, the chromaticity measuring instrument transmits the test result back to the controller, and the controller controls the mixing proportion of the RGB dyeing materials through the switch, thereby achieving the required chromaticity.

10. According to the invention, a plurality of UV light sources are arranged on the periphery of the main spray head in a circle array, the UV light sources can quickly cure thermosetting resin sprayed by the main spray head, the deformation of a product caused by the flowing of the resin is effectively avoided, and the UV light sources are arranged annularly, so that the curing of the main spray head in different advancing directions can be met; the outer wall of the lampshade of the UV light source is in contact connection with the main cylinder of the main spray head, and the heat of the UV light source is transferred to the resin in the main cylinder through the main cylinder, so that the flowability of the resin in the main cylinder is improved.

11. An annular cold air outlet is formed in one circle of the periphery of the auxiliary spray head, and cold air blown out of the cold air outlet can accelerate the solidification of thermoplastic resin, so that the shape of the required printed appearance is ensured; an annular cold air outlet is formed in the periphery of the UV light source in a circle, curing of thermosetting resin can be accelerated, heat of the UV light source can be taken away by cold air, and damage caused by overheating of the UV light source is avoided.

12. The top end of the box body of the printer is provided with the fan, the bottom end of the box body is provided with the air outlet, the environment in the printer can be improved in a mode that air flows from top to bottom, and fine particles are prevented from polluting resin; be provided with a garbage collection box on the base, when needs conversion colour, garbage collection box can be used to receive the discarded resin when the colour passes through, avoids the resin directly to scribble and produce the colour anomaly on the goods.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic diagram of a mixing unit of the present invention;

FIG. 3 is a schematic diagram of a second mixing unit according to an embodiment of the present invention;

FIG. 4 is a partial view of the present invention at the location of the mixing blade;

FIG. 5 is a cross-sectional view of the main/sub sprayer of the present invention;

FIG. 6 is a cross-sectional view of the AA site of FIG. 5 in accordance with the present invention;

FIG. 7 is a cross-sectional view of a fixation head of the present invention;

FIG. 8 is a schematic illustration of the position of the printing platform of the present invention;

FIG. 9 is a top view of the printing platform of the present invention;

FIG. 10 is a top view of the inspection vehicle of the present invention;

FIG. 11 is a bottom plan view of the primary spray head position of the present invention;

FIG. 12 is a schematic view of the housing of the present invention.

The reference numbers in the figures denote:

1-base, 2-support, 3-controller, 4-cross bar, 5-nozzle base, 6-printing platform, 601-mesh point, 7-main nozzle, 701-main cylinder, 702-fixed head, 703-sleeve, 704-round table, 705-groove, 706-spring, 707-through hole, 708-groove, 709-electrode, 710-heating resistance wire, 8-auxiliary nozzle, 9-mixing unit, 901-shell, 902-stirring rotating shaft, 903-rotating blade, 904-mixing blade, 905-mixing pipeline, 906-stirring blade, 10-RGB three-color feeding barrel, 11-first resin feeding barrel, 12-second resin feeding barrel, 13-switch, 14-first motor, 15-telescopic shaft, 16-a second motor, 17-a detection platform, 18-a detection carrier, 181-a sample tank, 19-a chromaticity measuring instrument, 20-a UV light source, 21-a cold air outlet, 22-a box body, 23-a fan, 24-an air outlet and 25-a waste collection box.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

The first real-time instance is as follows:

referring to fig. 1 to 12, the printer comprises a printer base 1, vertical supports 2 arranged on two sides of the base 1, a controller 3 arranged on one side of the base 1, a cross rod 4 arranged on the upper end of the supports 2 and horizontally moving back and forth relative to the supports 2, and a nozzle base 5 arranged on the cross rod 4 and horizontally moving in the length direction relative to the cross rod 4, wherein a printing platform 6 capable of moving up and down relative to the base 1 is arranged on the base 1; the nozzle seat 5 is fixedly provided with a main nozzle 7 and an auxiliary nozzle 8 respectively, the main nozzle 7 is provided with a mixing unit 9 at the feed inlet end, the mixing unit 9 is connected with an RGB three-color feed barrel 10 and a first resin feed barrel 11, the auxiliary nozzle 8 is connected with a second resin feed barrel 12, the resin in the first resin feed barrel 11 is thermosetting resin, the resin in the second resin feed barrel 12 is thermoplastic resin, the thermoplastic resin sprayed by the auxiliary nozzle 8 is taken as a removable support material and can be supported by an embedded support-free structure, and when a product is formed, the thermoplastic resin can be removed by heating, so that the printing forming of the embedded support-free structure is realized; the RGB three-color feeding barrel 10, the first resin feeding barrel 11 and the second resin feeding barrel 12 are respectively controlled by a switch 13 to open and close material conveying, the switch 13 is electrically connected with the controller 3, and the novel color 3D printer controls the color mixing proportion of the RGB three-color feeding barrel 10 through the switch 13 so as to achieve resin with required color and diversify the color of a product; the color mixing mode does not need to dye the raw materials in advance, and the color mixing and the dyeing of the raw materials are directly finished in the mixing unit 9, so that a product with better chromaticity can be obtained.

Further, referring to fig. 2, the mixing unit 9 includes a casing 901 with sealed periphery, and a stirring rotating shaft 902 vertically arranged in the middle of the casing 901, a plurality of sets of rotating blades 903 are arranged on the upper side of the stirring rotating shaft 902, and the mixing unit 9 fully mixes the RGB dyeing material and the resin raw material injected into the mixing unit through the plurality of sets of rotating blades 903 on the stirring rotating shaft 902; a spiral mixing blade 904 is arranged on the lower side of the stirring rotating shaft 902, and the spiral mixing blade 904 can mix the dyeing material and the resin at the discharge end of the mixing unit 9, so that the mixing effect is further ensured; and the lower outlet of the mixing unit 9 is communicated with the material inlet end of the main spray head 7.

Further, referring to fig. 5 and 6, the main nozzle 7 and the sub-nozzle 8 respectively include a main barrel 701 provided with a reduced outlet end, a fixed head 702 fixedly connected to an outlet end of the main barrel 701, and a sleeve 703 slidably sleeved with the fixed head 702, and the sleeve 703 is slidably sleeved with the fixed head 702, so that a flow channel in the main barrel 701 is closed in time when printing is stopped, and abnormalities such as end suck-back and wire drawing are effectively avoided; the sleeve 703 is a single opening, the opening end of the sleeve 703 faces the discharge end of the spray head, a circular truncated cone 704 is arranged at the opening end of the sleeve 703, a circular hole is formed in the middle of the circular truncated cone 704, a circle of grooves 705 are formed in the middle of the fixing head 702, and the sleeve 703 is slidably sleeved with the grooves 705 of the fixing head 702 through the circular hole; a compression spring 706 is arranged between the fixed head 702 and the bottom end of the inner cavity of the sleeve 703, and the elastic force of the spring 706 is smaller than the pressure of the inner cavity when the spray head works; a plurality of through holes 707 are distributed in an annular array at the joint of the main cylinder 701 and the fixed head 702; a circle of groove 708 is formed in the inner wall of the main cylinder 701 at a position corresponding to the fixing head 702, the diameter of the circular truncated cone 704 is larger than the diameter of the inner cavity of the main cylinder 701 and smaller than the diameter of the groove 708, and when the sleeve 703 moves upwards, the circular truncated cone 704 on the sleeve 703 can be locked with the side wall of the groove 708 and prevent discharging; the length of the groove 705 is smaller than that of the groove 708, and the projection of the groove 705 on the inner wall of the main cylinder 701 falls within the shape of the groove 708, when the sleeve 703 moves downwards, the sleeve 703 is limited at the lower side end of the groove 705 by the groove 705, so that the main cylinder 701 is prevented from being sealed by the circular truncated cone 704 on the sleeve 703; the distance from the upper side end of the groove 705 to the upper side end of the groove 708 is smaller than the thickness of the circular truncated cone 704, so that the upper end surface of the circular truncated cone 704 can be contacted and closed with the side surface of the groove 708 when the sleeve 703 moves upwards.

Further, referring to fig. 5 and 7, an electrode 709 is arranged at a joint of the fixing head 702 and the spring 706, the spring 706 is made of a resistance wire, the spring 706 is electrically connected with a circuit arranged in the electrode 709, and the flow of resin in the main barrel 701 can be improved by heating the spring 706; a heating resistance wire 710 is arranged in the fixing head 702, the heating resistance wire 710 is electrically connected with a circuit in the electrode 709, and the heating resistance wire 710 can effectively prevent the condensation and blockage at the discharge end of the spray head.

Further, referring to fig. 8 and 9, the printing platform 6 is driven to rotate by the first motor 14 at the lower end thereof, when a circular arc workpiece needs to be printed, the printing platform 6 can be directly rotated while the nozzle base 5 is not moved, the printing stability is better, and the circular arc is smoother; the first motor 14 is connected to the top end of a telescopic shaft 15, and the telescopic shaft 15 is driven by a second motor 16 to move up and down in a telescopic manner; the upper surface array of print platform 6 is provided with protruding site 601, and the adhesion of resin and print platform 6 can be increased to site 601, avoids the printing goods dislocation to remove.

Further, a detection platform 17 is arranged on one side of the printing platform 6 of the base 1, a detection carrier 18 is arranged at the upper end of the detection platform 17, and a plurality of sample grooves 181 are arranged on the detection carrier 18 in an array manner; the cross bar 4 is provided with a chromaticity measuring instrument 19 capable of translating relative to the length direction of the cross bar 4, the chromaticity measuring instrument 19 is electrically connected with the controller 3, the chromaticity measuring instrument 19 can test the chromaticity of the resin in the sample groove 181 so as to judge the accuracy of color mixing, when the chromaticity is deviated, the chromaticity measuring instrument 19 transmits the test result back to the controller 3, and the controller 3 controls the mixing proportion of the RGB dyeing material through the switch 13, so that the required chromaticity is achieved.

Further, referring to fig. 11, a plurality of UV light sources 20 are arranged in an array around the main nozzle 7, and the UV light sources 20 can quickly cure the thermosetting resin sprayed from the main nozzle 7, so as to effectively prevent the resin from flowing and causing product deformation; the outer wall of the lampshade of the UV light source 20 is in contact connection with the main cylinder 701 of the main spray nozzle 7, the outer wall of the lampshade of the UV light source 20 and the main cylinder 701 of the main spray nozzle 7 are made of metal materials with high heat conductivity, and heat of the UV light source 20 is transmitted to resin in the main cylinder 701 through the main cylinder 701, so that the flowability of the resin in the main cylinder 701 is improved; an annular cold air outlet 21 is formed in the periphery of the auxiliary spray head 8 in a circle, and cold air blown out from the cold air outlet 21 can accelerate the solidification of thermoplastic resin, so that the shape of the required printing is ensured; an annular cold air outlet 21 is formed in the periphery of the UV light source 20 in a circle, and cold air blown out from the cold air outlet 21 can take away heat of the UV light source 20, so that damage caused by overheating of the UV light source 20 is avoided.

Further, referring to fig. 12, the periphery of the printer is sealed by a box 22, a fan 23 is arranged at the top end of the box 22, and an air outlet 24 is arranged at the bottom end of the box 22, so that the environment in the printer can be improved in a top-down flowing mode of air, and fine particles are prevented from polluting resin; the base 1 is provided with a waste collection box 25, when the color needs to be converted, the waste collection box 25 can be used for receiving waste resin during color transition, and the abnormal color caused by the fact that the resin is directly coated on a product is avoided.

Example two in real time:

the second embodiment is different from the first embodiment in that:

referring to fig. 3 and 4, a spiral mixing pipeline 905 is arranged in the mixing unit 9, the upper end of the mixing pipeline 905 is connected with the RGB three-color feeding barrel 10 and the first resin feeding barrel 11, the outlet at the lower end of the mixing pipeline 905 is communicated with the feeding port end of the main nozzle 7, the RGB dyeing material and the resin raw material are mixed through the spiral mixing pipeline 905, the mixing time is increased by the spiral mixing pipeline 905, and the mixing quality is ensured; mixing tube 905 is provided with stirring vane 906 along mixing tube 905 inner wall spiral distribution in, has improved the mixed effect.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.