Single-head multicolor 3D printing device

Abstract

The utility model discloses a single-head multicolor 3D printing device, and relates to the technical field of 3D printing, the single-head multicolor 3D printing device comprises a feeding mechanism, a heating mechanism and a material changing mechanism, the feeding mechanism comprises an extrusion gear I, an extrusion gear II and a motor I, the motor I simultaneously drives the extrusion gear I and the extrusion gear II to rotate, and wires are automatically conveyed; the heating mechanism is arranged below the feeding mechanism and comprises an extrusion pipe and a heating block, the extrusion pipe is used for receiving the wires conveyed by the feeding mechanism, and the wires in the extrusion pipe are automatically heated through the heating block; the material changing mechanism is arranged above the feeding mechanism and comprises a second motor and a plurality of feeding pipe connectors, the wires of one color are arranged in one feeding pipe connector in a penetrating mode, the positions of the feeding pipe connectors are changed at the same time through the second motor, and the wires of different colors are automatically replaced. The printing device has the advantages of being reasonable in scheme, ingenious in structure and convenient to use and maintain.

Description

Technical Field ,

[0009]

[0001] The utility model relates to the technical field of 3D printing, and particularly relates to a single-head multi-color 3D printing device. Background Art

[0002] Traditional multi-color 3D printing nozzles usually perform multi-color printing through multiple nozzles, or by drawing filaments and flushing old materials during each layer of printing. Such multi-color printing is cumbersome, not only increasing the operation steps and time costs, but also potentially affecting the printing accuracy and consistency. At the same time, multiple nozzles mean more maintenance work and potential failure points, such as nozzle clogging, wear and other problems, which increase the difficulty and cost of maintenance.

[0003] Therefore, it is of great significance to design a new type of nozzle with a single nozzle that eliminates filament drawing and old material flushing. Content of the Utility Model

[0004] The purpose of the utility model is to provide a single-head multi-color 3D printing device to solve the above-mentioned defects in the prior art.

[0005] A single-head multi-color 3D printing device includes a feeding mechanism, a heating mechanism and a material changing mechanism, wherein:

[0006] The feeding mechanism includes a first extrusion gear, a second extrusion gear and a first motor. The first motor drives the first extrusion gear and the second extrusion gear to rotate simultaneously, and automatically conveys the wire material.

[0007] The heating mechanism is arranged below the feeding mechanism and includes an extrusion tube and a heating block. The extrusion tube receives the wire material conveyed by the feeding mechanism, and automatically heats the wire material in the extrusion tube through the heating block.

[0008] The material changing mechanism is arranged above the feeding mechanism and includes a second motor and a plurality of feed pipe connectors. One color of wire material is inserted into each feed pipe connector. The second motor changes the positions of these feed pipe connectors simultaneously, and automatically replaces different colors of wire materials.

[0009] Preferably, the feeding mechanism further includes an installation shell. The installation shell has a "冂"-shaped structure and has a feeding hole at its top. The first extrusion gear is rotatably connected to the installation shell, and a circular conveying groove one is provided on the first extrusion gear. The rear of the installation shell is hinged with a hinge frame through a hinge column. The second extrusion gear is rotatably connected to the hinge frame, and a circular conveying groove two is provided on the second extrusion gear. The feeding hole is located directly above the conveying groove one and the conveying groove two, and the first extrusion gear and the second extrusion gear are meshed with each other. The first motor is horizontally installed on the side of the installation shell, and a first transmission gear is key-connected to its output end. A second transmission gear is coaxially installed at the end of the first extrusion gear, and the first transmission gear and the second transmission gear are meshed with each other.

[0010] Preferably, the extrusion tube is coaxially arranged directly below the feeding hole, and a number of cooling fins are evenly distributed on the outside of the extrusion tube. The top of the extrusion tube is coaxially connected to the throat, and the heating block is coaxially connected to the lower part of the extrusion tube, and a heating rod and a temperature sensor are installed on the heating block. The heating block is installed with two insulation shells on the front and rear sides of the extrusion tube, and a temperature control fan and a cooling fan are installed on the side of the installation shell. The air outlet on the temperature control fan faces the cooling fins on the extrusion tube, and an oblique blowing nozzle is installed on the lower side of the cooling fan, and the air outlet on the cooling fan is connected to the oblique blowing nozzle, and the air outlet on the oblique blowing nozzle faces the lower area of ​​the extrusion tube.

[0011] Preferably, a lower support plate is installed in the center of the front side of the mounting shell, the motor 2 is vertically installed upward on the mounting shell through the mounting plate, and a transmission gear 3 is keyed to its output end, the upper side of the mounting plate is rotatably connected to a mounting column, and a transmission gear 4 is keyed to the mounting column, and the transmission gear 4 and the transmission gear 3 are meshed with each other, and an inclined support bracket is obliquely installed on the top surface of the mounting shell, and a straight guide rail is horizontally connected to the top of the inclined support bracket, and a straight rack is slidably connected to the upper side of the straight guide rail, and the straight rack and the transmission gear 4 are meshed with each other, and all feed pipe joints are evenly arranged on the straight rack.

[0012] Preferably, a photoelectric sensor is installed behind the feeding hole of the mounting shell.

[0013] Preferably, the mounting shell is provided with limit switches on both the left and right sides of the straight guide rail.

[0014] Preferably, a first protective shell is hingedly connected to the rear of the installation shell, and a second protective shell is hingedly connected to the front of the installation shell.

[0015] Preferably, a protective shell three is installed on the upper side of the mounting plate, and the transmission gear three and the transmission gear four are both located in the protective shell three.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. Higher printing efficiency: Single-head multi-color 3D printing nozzle does not need to be replaced or cleaned during the printing process, thus saving time and improving printing efficiency.

[0018] 2. Lower cost: Using a single-head multi-color printhead can reduce the cost of purchasing and maintaining multiple printheads, which is more economical.

[0019] 3. Richer colors: The single-head multi-color 3D printing nozzle can easily print in multiple colors, making the colors of the printed works richer and the transition more natural.

[0020] 4. Reduced maintenance difficulty: Compared with dual-nozzle or multi-nozzle 3D printers, the single-head multi-color 3D printing device has a simpler structure, reducing the mechanical failures and maintenance difficulties that may be caused by the large number of nozzles.

[0021] 5. Wider application: Single-head multi-color 3D printing nozzle can meet more diverse printing needs and is suitable for multiple fields such as product design, education, and medical care. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0023] Figure 2 It is a schematic structural diagram of the utility model as a whole when viewed from the front.

[0024] Figure 3 This is a structural diagram of the feeding mechanism in the present invention from the first perspective.

[0025] Figure 4 This is a structural diagram of the feeding mechanism in the present invention from a second perspective.

[0026] Figure 5 This is a structural diagram of the extrusion mechanism in the utility model from the first perspective.

[0027] Figure 6 This is a structural diagram of the material changing mechanism in the present invention from the first perspective.

[0028] Figure 7 This is a structural diagram of the material changing mechanism in the present invention from a second perspective.

[0029] in:

[0030] 10 - Feeding mechanism; 101 - Mounting housing; 101a - Feeding hole; 102 - Extrusion gear 1; 102a - Conveying trough 1; 103 - Articulated column 1; 104 - Articulated frame; 105 - Extrusion gear 2; 105a - Conveying trough 2; 106 - Protective housing 1; 107 - Motor 1; 108 - Transmission gear 1; 109 - Transmission gear 2; 110 - Photoelectric sensor;

[0031] 20-heating mechanism; 201-extrusion tube; 202-cooling fin; 203-throat; 204-heating block; 205-heating rod; 206-temperature sensor; 207-insulation shell; 208-temperature control fan; 209-cooling fan; 210-oblique blowing nozzle;

[0032] 30-Material changing mechanism; 301-Lower support plate; 302-Protective shell 2; 303-Mounting plate; 304-Electric motor 2; 305-Transmission gear 3; 306-Mounting column; 307-Transmission gear 4; 308-Protective shell 3; 309-Diagonal support; 310-Straight guide rail; 311-Straight rack; 312-Feed pipe joint; 313-Limit switch. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0034] like Figures 1 to 7 As shown, a single-head multi-color 3D printing device includes a feeding mechanism 10, a heating mechanism 20 and a material changing mechanism 30, wherein:

[0035] The feeding mechanism 10 includes an extrusion gear 102, an extrusion gear 2 105 and a motor 107. The motor 107 drives the extrusion gear 102 and the extrusion gear 2 105 to rotate simultaneously and automatically feed the wire.

[0036] The heating mechanism 20 is disposed below the feeding mechanism 10 and includes an extrusion tube 201 and a heating block 204 . The extrusion tube 201 receives the wire material delivered by the feeding mechanism 10 and automatically heats the wire material in the extrusion tube 201 through the heating block 204 .

[0037] The material changing mechanism 30 is arranged above the feeding mechanism 10 and includes a second motor 304 and a plurality of feed pipe joints 312. A feed pipe joint 312 is filled with a wire of one color. The positions of these feed pipe joints 312 are changed simultaneously by the second motor 304, and wires of different colors are automatically replaced.

[0038] In this embodiment, the feeding mechanism 10 further includes a mounting shell 101. The mounting shell 101 has a "冂"-shaped structure and is provided with a feeding hole 101a at its top. The first extrusion gear 102 is rotatably connected to the mounting shell 101, and an annular conveying groove 102a is provided on the first extrusion gear 102. A hinge frame 104 is hinged to the rear of the mounting shell 101 through a hinge column 103. The second extrusion gear 105 is rotatably connected to the hinge frame 104, and an annular conveying groove 105a is provided on the second extrusion gear 105. The feeding hole 101a is located directly above the conveying groove 102a and the conveying groove 105a, and the first extrusion gear 102 and the second extrusion gear 105 mesh with each other. The first motor 107 is horizontally installed on the side of the mounting shell 101, and a first transmission gear 108 is key-connected to its output end. The end of the first extrusion gear 102 is coaxially installed with a second transmission gear 109, and the first transmission gear 108 and the second transmission gear 109 mesh with each other. The wire material is穿装于送料孔101a之后再穿装于输送槽一102a与输送槽二105a之间,电机一107经过齿轮传动后带动挤压齿轮一102与挤压齿轮二105转动,并且自动向下输送丝材。(原句中“穿装于”表述不太准确,这里先按字面翻译,你可根据实际情况修改)After passing through the feeding hole 101a, the wire material then passes between the conveying groove 102a and the conveying groove 105a. After gear transmission by the first motor 107, the first extrusion gear 102 and the second extrusion gear 105 are driven to rotate, and the wire material is automatically conveyed downward.

[0039] In this embodiment, the extrusion tube 201 is coaxially arranged directly below the feeding hole 101a. A plurality of cooling fins 202 are evenly distributed on the outer side of the extrusion tube 201. The top end of the extrusion tube 201 is coaxially connected with a throat tube 203. The heating block 204 is coaxially connected to the lower part of the extrusion tube 201, and a heating rod 205 and a temperature sensor 206 are installed on the heating block 204. Two heat insulation shells 207 are installed on the front and back sides of the heating block 204 on the extrusion tube 201. A temperature control fan 208 and a cooling fan 209 are installed on the side of the mounting shell 101. The air outlet of the temperature control fan 208 faces the cooling fins 202 on the extrusion tube 201. A diagonal blowing nozzle 210 is installed on the lower side of the cooling fan 209, and the air outlet of the cooling fan 209 is connected to the diagonal blowing nozzle 210. The air outlet of the diagonal blowing nozzle 210 faces the lower area of the extrusion tube 201. The wire material passes through the throat tube 203 and then enters the extrusion tube 201. The wire material in the extrusion tube 201 is heated by the heating rod 205 on the heating block 204. After being heated to the molten state, it is ejected from the lower port of the extrusion tube 201, and then the printed material is quickly cooled by the cold air blown by the cooling fan 209 in cooperation with the diagonal blowing nozzle 210. During the heating process, the temperature of the heating block 204 is detected in real time by the temperature sensor 206. When the detected temperature is too high, the extrusion tube 201 and the heating block 204 are cooled by the cold air blown by the temperature control fan 208.

[0040] In this embodiment, a lower support plate 301 is installed in the center of the front side of the mounting shell 101, and the motor 2 304 is vertically installed upward on the mounting shell 101 through the mounting plate 303, and a transmission gear 3 305 is keyed to its output end, and a mounting column 306 is rotatably connected to the upper side of the mounting plate 303, and a transmission gear 4 307 is keyed to the mounting column 306, and the transmission gear 4 307 and the transmission gear 3 305 are meshed with each other, and a diagonal support bracket 309 is obliquely installed on the top surface of the mounting shell 101, and a straight guide rail 310 is horizontally connected to the top of the straight guide rail 310, and a straight rack 311 is slidably connected above the straight guide rail 310, and the straight rack 311 and the transmission gear 4 307 are meshed with each other, and all feed pipe joints 312 are evenly arranged on the straight rack 311. Since a feed pipe joint 312 is filled with a wire of one color, when a wire of a different color needs to be replaced, the motor 2 304 drives the feed pipe joints 312 in this row to move after gear transmission, and adjusts the corresponding feed pipe joint 312 to be aligned directly above the feeding hole 101a, thereby automatically replacing the wire of a different color.

[0041] In this embodiment, a photoelectric sensor 110 is installed behind the feeding hole 101a of the mounting housing 101. The photoelectric sensor 110 can detect whether there is wire in the feeding hole 101a.

[0042] In this embodiment, the mounting housing 101 is provided with limit switches 313 on both the left and right sides of the straight guide rail 310. The limit switches 313 on the left and right sides can define the left and right movement limit positions of the spur rack 311.

[0043] In this embodiment, the rear of the mounting shell 101 is hinged with a protective shell 106, and the front of the mounting shell 101 is hinged with a protective shell 2 302. The protective shell 106 and the protective shell 2 302 can avoid accidents of scalding.

[0044] In this embodiment, a protective shell 308 is installed on the upper side of the mounting plate 303, and the transmission gear 305 and the transmission gear 4 307 are both located in the protective shell 308. The protective shell 308 can prevent accidents caused by mechanical injuries.

[0045] The working principle of this single-head multi-color 3D printing device:

[0046] After the filament is installed in the feed hole 101a, it is installed between the conveyor trough 102a and the conveyor trough 2 105a. After the motor 107 is driven by the gear transmission, it drives the extrusion gear 102 and the extrusion gear 2 105 to rotate and automatically transport the filament downward. After the filament is installed in the throat pipe 203, it enters the extrusion tube 201. The heating rod 205 on the heating block 204 heats the filament in the extrusion tube 201. After being heated to a molten state, it is ejected from the lower port of the extrusion tube 201. Then, the cold air blown by the cooling fan 209 and the oblique blowing nozzle 210 is used to quickly cool the printed material. During the heating process, the temperature of the heating block 204 is detected in real time by the temperature sensor 206. When it is detected that the temperature is too high, the cold air blown by the temperature control fan 208 cools the extrusion tube 201 and the heating block 204. Since a feed pipe joint 312 is filled with a wire of one color, when a wire of a different color needs to be replaced, the motor 2 304 drives the feed pipe joints 312 in this row to move after gear transmission, and adjusts the corresponding feed pipe joint 312 to be aligned directly above the feeding hole 101a, thereby automatically replacing the wire of a different color.

[0047] Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. A single-head multi-color 3D printing device, characterized by: It includes a feeding mechanism (10), a heating mechanism (20) and a material changing mechanism (30), where: The feeding mechanism (10) includes a first extrusion gear (102), a second extrusion gear (105) and a first motor (107). The first motor (107) drives the first extrusion gear (102) and the second extrusion gear (105) to rotate simultaneously, and automatically conveys the wire material; The heating mechanism (20) is arranged below the feeding mechanism (10) and includes an extrusion tube (201) and a heating block (204). The extrusion tube (201) receives the wire material conveyed by the feeding mechanism (10), and automatically heats the wire material in the extrusion tube (201) through the heating block (204); The material changing mechanism (30) is arranged above the feeding mechanism (10) and includes a second motor (304) and a plurality of feed pipe connectors (312). One color of wire material is installed in each feed pipe connector (312). By the second motor (304), the positions of these feed pipe connectors (312) are changed simultaneously, and different colors of wire materials are automatically replaced.

2. The single-head multi-color 3D printing device according to claim 1, characterized in that: The feeding mechanism (10) further includes a mounting shell (101). The mounting shell (101) is of a "冂" - shaped structure and has a feeding hole (101a) at its top. The first extrusion gear (102) is rotatably connected to the mounting shell (101), and an annular conveying groove one (102a) is provided on the first extrusion gear (102). The rear of the mounting shell (101) is hinged with a hinge frame (104) through a hinge column (103). The second extrusion gear (105) is rotatably connected to the hinge frame (104), and an annular conveying groove two (105a) is provided on the second extrusion gear (105). The feeding hole (101a) is located directly above the conveying groove one (102a) and the conveying groove two (105a), and the first extrusion gear (102) and the second extrusion gear (105) are meshed with each other. The first motor (107) is horizontally installed on the side of the mounting shell (101), and a first transmission gear (108) is key - connected to its output end. The end of the first extrusion gear (102) is coaxially installed with a second transmission gear (109), and the first transmission gear (108) and the second transmission gear (109) are meshed with each other.

3. The single-head multi-color 3D printing device according to claim 2, characterized in that: The extrusion tube (201) is coaxially arranged just below the feeding hole (101a), and a plurality of cooling fins (202) are evenly distributed on the outside of the extrusion tube (201). The top of the extrusion tube (201) is coaxially connected to the throat (203). The heating block (204) is coaxially connected to the lower part of the extrusion tube (201), and a heating rod (205) and a temperature sensor (206) are installed on the heating block (204). The heating block (204) is installed on the front and back sides of the extrusion tube (201). Two heat-insulating shells (207) are installed, and a temperature-control fan (208) and a cooling fan (209) are installed on the side of the installation shell (101). The air outlet on the temperature-control fan (208) faces the cooling fin (202) on the extrusion tube (201), and an oblique blowing nozzle (210) is installed on the lower side of the cooling fan (209). The air outlet on the cooling fan (209) is connected to the oblique blowing nozzle (210), and the air outlet on the oblique blowing nozzle (210) faces the lower area of ​​the extrusion tube (201).

4. The single-head multi-color 3D printing device according to claim 2, characterized in that: A lower support plate (301) is installed in the center of the front side of the mounting shell (101), and the motor 2 (304) is vertically installed on the mounting shell (101) through the mounting plate (303), and a transmission gear 3 (305) is keyed to the output end thereof. The upper side of the mounting plate (303) is rotatably connected to a mounting column (306), and a transmission gear 4 (307) is keyed to the mounting column (306), and the transmission gear 4 (307) is connected to the transmission column (306). The gears (305) are meshed with each other. The top surface of the mounting shell (101) is obliquely mounted with an inclined support frame (309). The top of the inclined support frame (309) is horizontally connected to a straight guide rail (310). The upper portion of the straight guide rail (310) is slidably connected to a straight rack (311). The straight rack (311) and the transmission gear (307) are meshed with each other. All feed pipe joints (312) are evenly arranged on the straight rack (311).

5. The single-head multi-color 3D printing device according to claim 2, characterized in that: The mounting shell (101) is provided with a photoelectric sensor (110) behind the feeding hole (101a).

6. The single-head multi-color 3D printing device according to claim 4, characterized in that: The installation housing (101) is provided with limit switches (313) on both the left and right sides of the straight guide rail (310).

7. The single-head multi-color 3D printing device according to claim 4, characterized in that: The rear of the installation shell (101) is hinged with a protective shell 1 (106), and the front of the installation shell (101) is hinged with a protective shell 2 (302).

8. The single-head multi-color 3D printing device according to claim 4, characterized in that: A protective shell three (308) is installed on the upper side of the mounting plate (303), and the transmission gear three (305) and the transmission gear four (307) are both located in the protective shell three (308).

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