Coloring device for 3D printer and 3D printer

Abstract

The invention relates to the field of 3D printers, in particular to a coloring device for a 3D printer and the 3D printer.The coloring device comprises a coloring mechanism, the coloring mechanism comprises a cable rack, a protection box and a base, a printing spray head is arranged on the base, a conveying pipe is connected to the printing spray head, a fixing block is arranged on the inner wall of the protection box, and the end, away from the printing spray head, of the conveying pipe is connected with the fixing block; a liquid conveying part and a sealing part are arranged on the fixing block, a switch part is arranged on the sealing part, a wire hole is formed in the center of the fixing block, and a conical rubber pipe is arranged in the wire hole; the driving mechanism comprises a groove formed in the top of the fixing block, a fixing sleeve is arranged in the center of the bottom surface in the groove, a rotating sleeve is arranged on the fixing sleeve, a follow-up part is arranged on the switch part, and a fixing ring and a reset part are arranged on the side wall of the rotating sleeve. And through the arrangement of the coloring mechanism, the driving mechanism and the washing mechanism, 3D products with different colors can be printed according to the requirements of workers.

Description

Technical Field

[0001] The present invention relates to the field of 3D printers, in particular to a coloring device for a 3D printer and a 3D printer. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a rapid prototyping process equipment. 3D printer uses a technology called "deposition molding". The whole process is to melt the plastic in the print head and then form a thin layer by depositing plastic fibers.

[0003] When existing 3D printers are in operation, they need to replace wires of different colors in order to print products of different colors. Each time the wire is replaced, the wire needs to be reconnected to the printer's print head, and multiple colors of wire need to be stored. The work efficiency is low when changing different wire colors. Summary of the invention

[0004] In view of the problem in the above or prior art that different color wires need to be replaced when printing products of different colors, and the low working efficiency when replacing the wires, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a coloring device for a 3D printer.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a coloring device for a 3D printer, comprising: a coloring mechanism, which includes a cable rack, a protective box and a base, a printing nozzle is arranged on the base, a feeding pipe is connected to the printing nozzle, a fixing block is arranged on the inner wall of the protective box, an end of the feeding pipe away from the printing nozzle is connected to the fixing block, an infusion part and a sealing part are arranged on the fixing block, a switch part is arranged on the sealing part, a wire hole is arranged at the center position of the fixing block, and a conical rubber tube is arranged inside the wire hole; a driving mechanism includes a groove arranged on the top of the fixing block, and a center of the bottom surface of the inner part of the groove is provided. A fixed sleeve is provided at the center position, a rotating sleeve is provided on the fixed sleeve, a following part is provided on the switch part, a fixed ring and a reset part are provided on the side wall of the rotating sleeve, a first downward pressing part is provided on the reset part, and a second downward pressing part is provided on the side wall of the rotating sleeve; a flushing mechanism includes a first water outlet pipe and a second water outlet pipe at the bottom of the fixed block, one end of the first water outlet pipe away from the fixed block is interconnected with the feed pipe, and one end of the first water outlet pipe is adjacent to the printing nozzle, a vertical pipe is provided on the fixed block, a water inlet hose is connected to the top of the vertical pipe, a following block and a flow control part are provided on the side wall of the vertical pipe, and an adjusting part is provided on the flow control part.

[0007] As a preferred solution of the coloring device for a 3D printer of the present invention, the infusion part includes an infusion channel and a liquid collecting cavity on the fixed block; the sealing part includes a transverse groove opened on the fixed block, a first spring is arranged inside the transverse groove, one end of the first spring is connected to a moving block, a sealing plate is arranged on the moving block, and a guide groove is arranged on the top of the moving block.

[0008] As a preferred solution of the coloring device for a 3D printer of the present invention, the switch part includes a vertical slot, a limit slot and a storage slot on the fixed block, a lifting rod is arranged inside the storage slot, a lifting plate and a limit block are connected to the side wall of the lifting rod, and a second spring is connected to the bottom of the lifting plate.

[0009] As a preferred solution of the coloring device for a 3D printer of the present invention, the following part includes a spiral plate on the side wall of the lifting rod, and the bottom of the spiral plate is connected to an L-shaped block.

[0010] As a preferred solution of the coloring device for a 3D printer of the present invention, the reset portion comprises a lifting ring on the side wall of the rotating sleeve, and a third spring is connected to the bottom of the lifting ring.

[0011] As a preferred solution of the coloring device for a 3D printer of the present invention, wherein: the first pressing part includes an annular groove on the side wall of the lifting ring, a push rod is arranged inside the annular groove, a vertical rod is connected to the bottom surface inside the groove, the push rod is sleeved on the side wall of the vertical rod, and one end of the push rod is located between the L-shaped block and the spiral plate.

[0012] As a preferred solution of the coloring device for a 3D printer of the present invention, the second pressing portion includes a threaded sleeve on the side wall of the rotating sleeve, a pressing tube is provided on the side wall of the threaded sleeve, and a cut is opened on the pressing tube.

[0013] As a preferred solution of the coloring device for a 3D printer of the present invention, the flow control part includes a first water outlet on the side wall of the vertical pipe, a bent rod is connected to the side wall of the vertical pipe, and a water inlet and a second water outlet are provided on the bent rod.

[0014] As a preferred solution of the coloring device for a 3D printer of the present invention, the adjusting portion comprises a conical head on the bending rod, and a telescopic tube is connected to the inclined surface of the conical head.

[0015] A 3D printer according to an embodiment of the present invention comprises any one of the above-mentioned coloring devices for a 3D printer.

[0016] The beneficial effects of the coloring device for a 3D printer of the present invention: through the setting of the coloring mechanism, the staff can select the color of the dye according to actual needs and enter the interior of the feed pipe to mix it with the melted wire to process products of different colors; through the setting of the driving mechanism, compared with the staff locking and unlocking one by one, the staff can choose to unlock multiple lifting rods at the same time and bring down multiple lifting rods at the same time to control the switch of the sealing plate and complete the sealing and opening of the infusion channel; through the setting of the flushing mechanism, when the staff switches between dyes of different colors, the liquid collecting cavity and the interior of the feed pipe can be flushed to minimize the influence between dyes of different colors and ensure the purity of the color. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 Schematic diagram of a coloring device for a 3D printer.

[0019] Figure 2 Schematic diagram of the interior of the protective box of the coloring device for a 3D printer.

[0020] Figure 3 A schematic top view of a fixing block of a coloring device for a 3D printer.

[0021] Figure 4 A schematic cross-sectional view of a fixing block of a coloring device for a 3D printer.

[0022] Figure 5 Coloring device for 3D printer Figure 4 Enlarged schematic diagram at point A in the middle.

[0023] Figure 6 A schematic diagram of a cross-sectional view of a coloring device for a 3D printer.

[0024] Figure 7 A schematic diagram of a flushing mechanism for a coloring device of a 3D printer.

[0025] Figure 8 Schematic diagram of a lifting rod of a coloring device for a 3D printer.

[0026] Fig. 9 Schematic diagram of a bending rod of a coloring device for a 3D printer.

[0027] In the figure: 10, cable rack; 11, protection box; 12, base; 13, print nozzle; 14, feed pipe; 15, fixed block; 16, infusion part; 161, infusion channel; 162, liquid collecting chamber; 17, sealing part; 171, horizontal groove; 172, first spring; 173, moving block; 174, sealing plate; 175, guide groove; 18, switch part; 181, vertical groove; 182, limit groove; 183, storage groove; 184, lifting rod; 185, lifting plate; 186, limit block; 187, second spring; 19, wire hole; 20, tapered rubber tube; Groove; 22, fixed sleeve; 23, rotating sleeve; 24, follower; 241, spiral plate; 242, L-shaped block; 25, fixed ring; 26, reset part; 261, lifting ring; 262, third spring; 27, first pressing part; 271, annular groove; 272, push rod; 273, vertical rod; 28, second pressing part; 281, threaded sleeve; 282, pressing tube; 283, incision; 29, first water outlet pipe; 30, second water outlet pipe; 31, vertical pipe; 32, water inlet hose; 33, follower block; 34, flow control part; 341, first water outlet hole; 342, bent rod; 343, water inlet; 344, second water outlet hole; 35, adjustment part; 351, conical head; 352, telescopic tube. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0029] Reference Figures 1 to 9 The technical solution provides a coloring device for a 3D printer, including a coloring mechanism, a driving mechanism and a flushing mechanism. The color can be selected according to the actual needs of the staff to color the wire. At the same time, the feed pipe 14 and the liquid collecting chamber 162 can be flushed during the color switching process to avoid mixing of dyes of different colors.

[0030] Furthermore, the coloring mechanism is convenient for the staff to select different dyes and wires for printing, which includes a cable rack 10, a protective box 11 and a base 12. The wires are wound on the cable rack 10, and a print head 13 is arranged on the base 12. The print head 13 can move and print on the X, Y and Z axes on the base 12. A feed pipe 14 is connected to the print head 13. A fixed block 15 is arranged on the inner wall of the protective box 11. The end of the feed pipe 14 away from the print head 13 is connected to the fixed block 15. An infusion part 16 and a sealing part 17 are arranged on the fixed block 15. A switch part 18 is arranged on the sealing part 17. A wire hole 19 is arranged at the center of the fixed block 15, and a conical rubber tube 20 is arranged inside the wire hole 19.

[0031] During use, when no wire is inserted into the wire hole 19 , the tapered rubber tube 20 is in a sealed state, and liquid cannot enter the top of the tapered rubber tube 20 .

[0032] Furthermore, the infusion part 16 includes an infusion channel 161 and a liquid collecting chamber 162 on the fixed block 15. The infusion channel 161 and the liquid collecting chamber 162 are interconnected. The bottom of the liquid collecting chamber 162 has a certain slope to facilitate liquid concentration. There are multiple infusion channels 161, and the multiple infusion channels 161 are evenly distributed on the fixed block 15 in a circular array.

[0033] When in use, the staff connects dyes of different colors to the infusion channel 161 on the top of the fixed block 15. The dye can enter the liquid collecting chamber 162 through the infusion channel 161 and finally enter the feed pipe 14, so that the dye comes into contact with the wire and mixes with the dye when the wire is melted, so that a colored product is printed.

[0034] Furthermore, the sealing portion 17 includes a transverse groove 171 opened on the fixed block 15, a first spring 172 is arranged inside the transverse groove 171, one end of the first spring 172 is connected to a moving block 173, a sealing plate 174 is arranged on the moving block 173, and the end of the sealing plate 174 away from the moving block 173 can separate the infusion channel 161 to prevent the dye from entering the liquid collecting cavity 162, and a guide groove 175 is arranged on the top of the moving block 173, and the guide groove 175 is composed of an inclined surface and a plane.

[0035] It should be noted that, under normal circumstances, the spring drives the moving block 173, and the moving block 173 drives the sealing plate 174 to separate the infusion tube groove.

[0036] Furthermore, the switch portion 18 includes a vertical slot 181, a limiting slot 182 and a storage slot 183 on the fixed block 15. The vertical slot 181 and the limiting slot 182 are interconnected, the limiting slot 182 is located on one side of the vertical slot 181, the vertical slot 181 and the storage slot 183 are interconnected, a lifting rod 184 is provided inside the storage slot 183, the top end of the lifting rod 184 can extend to the top of the fixed block 15, the bottom end of the lifting rod 184 extends to the inside of the transverse slot 171, a lifting plate 185 and a limiting block 186 are connected to the side wall of the lifting rod 184, the lifting plate 185 is located inside the storage slot 183, the limiting block 186 is located inside the vertical slot 181, and the bottom of the lifting plate 185 is connected to a second spring 187.

[0037] During use, when the staff presses down the lifting rod 184, the bottom end of the lifting rod 184 can squeeze the inclined surface on the guide groove 175, so that the moving block 173 drives the first spring 172 to contract. At the same time, the moving block 173 drives the sealing plate 174 to be retracted into the interior of the horizontal groove 171, so that the infusion channel 161 is unobstructed. When the side wall of the lifting rod 184 contacts the plane, the sealing plate 174 is fully opened. When the staff presses down the lifting rod 184, when the lifting rod 184 drives the limit block 186 to descend to the bottom of the vertical groove 181, it can only flip to one side, so that the limit block 186 enters the interior of the limit groove 182.

[0038] Furthermore, the driving mechanism can enable the staff to control the switches of multiple sealing plates 174 at the same time, thereby improving the work efficiency of the staff, including a groove 21 set on the top of the fixed block 15, a fixed sleeve 22 is set at the center position of the inner bottom surface of the groove 21, a rotating sleeve 23 is set on the fixed sleeve 22, the rotating sleeve 23 is threadedly connected to the fixed sleeve 22, a follower part 24 is set on the switch part 18, a fixing ring 25 and a reset part 26 are set on the side wall of the rotating sleeve 23, a first pressing part 27 is set on the reset part 26, and a second pressing part 28 is set on the side wall of the rotating sleeve 23.

[0039] When in use, when the rotating sleeve 23 rotates, it can be raised and lowered on the side wall of the fixed sleeve 22 .

[0040] Furthermore, the follower 24 includes a spiral plate 241 on the side wall of the lifting rod 184 , and the bottom of the spiral plate 241 is connected to an L-shaped block 242 , which is installed on the side wall of the lifting rod 184 .

[0041] It should be noted that when the limit block 186 is located inside the vertical groove 181, the top end of the spiral plate 241 contacts the inner wall of the groove 21, and the bottom end of the spiral plate 241 is adjacent to the middle position of the lifting rod 184. When the lifting rod 184 drives the limit block 186 to move to the inside of the limit groove 182, the lifting rod 184 simultaneously drives the top end of the spiral plate 241 to approach the middle position of the lifting rod 184.

[0042] Furthermore, the reset part 26 includes a lifting ring 261 on the side wall of the rotating sleeve 23, the bottom of the lifting ring 261 is connected to a third spring 262, the lifting ring 261 is movably sleeved on the side wall of the rotating sleeve 23, the fixed ring 25 is located above the lifting ring 261, and the bottom of the third spring 262 is connected to the bottom surface inside the groove 21.

[0043] During use, when the rotating sleeve 23 descends, it drives the fixed ring 25 to descend together. The fixed ring 25 drives the lifting ring 261 to descend and squeeze the third spring 262. When the rotating sleeve 23 rises, the third spring 262 recovers and drives the lifting ring 261 to rise. The lifting ring 261 can descend together with the fixed ring 25, and the lifting ring 261 can also be lowered by other forces.

[0044] Furthermore, the first pressing portion 27 includes an annular groove 271 on the side wall of the lifting ring 261, a push rod 272 is arranged inside the annular groove 271, and a vertical rod 273 is connected to the bottom surface of the groove 21. The push rod 272 is sleeved on the side wall of the vertical rod 273. When the lifting ring 261 is lifted or lowered, the cross bar can be driven to lift or lower on the side wall of the vertical rod 273. One end of the push rod 272 is located between the L-shaped block 242 and the spiral plate 241, and the other end of the push rod 272 is arc-shaped, and the other end of the push rod 272 is in contact with the inner wall of the annular groove 271. Since the other end of the push rod 272 is arc-shaped, when it cooperates with the vertical rod 273, the position of the push rod 272 can be avoided from changing.

[0045] It should be noted that when the staff manually controls the lifting rod 184 to descend and lock it, the top of the spiral plate 241 is adjacent to the push rod 272. When the push rod 272 descends, the push rod 272 can squeeze the spiral plate 241, causing the spiral plate 241 to rotate, and the spiral plate 241 drives the lifting rod 184 to rotate. The lifting rod 184 drives the limit block 186 from the inside of the limit groove 182 to the inside of the vertical groove 181. The second spring 187 recovers and drives the lifting rod 184 to rise, releasing the restriction on the moving block 173, so that the sealing plate 174 separates and seals the infusion channel 161. At this time, as the lifting rod 184 rises, one end of the push rod 272 is finally located between the L-shaped block 242 and the spiral plate 241. When the push rod 272 descends, it can drive the L-shaped block 242 to descend, and the L-shaped block 242 drives the lifting rod 184 to descend together, so that the sealing plate 174 is opened again.

[0046] Furthermore, the second pressing portion 28 includes a threaded sleeve 281 on the side wall of the rotating sleeve 23 , a pressing tube 282 is provided on the side wall of the threaded sleeve 281 , the pressing tube 282 is rotatably connected to the outer side wall of the threaded sleeve 281 , and a cutout 283 is opened on the pressing tube 282 .

[0047] It should be noted that when the pressing tube 282 is blocked, even if the threaded sleeve 281 rotates, the pressing tube 282 will not rotate according to the threaded sleeve 281 .

[0048] When in use, when the staff holds the rotating sleeve 23 with one hand and rotates the threaded sleeve 281 with the other hand, the threaded sleeve 281 can be raised and lowered on the side wall of the rotating sleeve 23. When the threaded sleeve 281 is raised and lowered, it can drive the pressing tube 282 to be raised and lowered together. When the pressing tube 282 is raised and lowered, the pressing tube 282 can squeeze the top of the push rod 272 from top to bottom, so that the push rod 272 descends, and the push rod 272 squeezes the L-shaped block 242 and the lifting ring 261. The lifting ring 261 drives the third spring 262 to contract, and the L-shaped block 242 drives the lifting rod 184 to descend, so that the partition plate is retracted into the interior of the transverse groove 171, and the infusion channel 161 is unblocked again.

[0049] Furthermore, the flushing mechanism can realize cleaning the inside of the liquid collecting chamber 162 when the staff switches the dyes of different colors to reduce the mutual influence between the dyes, and includes a first water outlet pipe 29 and a second water outlet pipe 30 at the bottom of the fixed block 15, the second water outlet pipe 30 and the liquid collecting chamber 162 are mutually connected, the end of the first water outlet pipe 29 away from the fixed block 15 is mutually connected with the feed pipe 14, and one end of the first water outlet pipe 29 is adjacent to the print nozzle 13, and a vertical pipe 31 is provided on the fixed block 15. The bottom end of the vertical pipe 31 extends to the interior of the fixed block 15 through the liquid collecting chamber 162, and the bottom of the vertical pipe 31 is located above the first water outlet pipe 29. The bottom of the vertical pipe 31 is in a sealed state, and a plurality of sealing rings are arranged on the side wall of the vertical pipe 31. The top of the vertical pipe 31 is connected to a water inlet hose 32, and the vertical pipe 31 is located inside the incision 283. A follower block 33 and a flow control part 34 are arranged on the side wall of the vertical pipe 31. The follower block 33 is rotatably connected to the fixed ring 25, and an adjusting part 35 is arranged on the flow control part 34.

[0050] During use, when the fixing ring 25 rotates, the follower block 33 will not move with the fixing ring 25. When the fixing ring 25 is raised or lowered, it can drive the lifting ring 261 and the follower block 33 to descend together. The follower block 33 drives the vertical pipe 31 to rise or fall together. Through the setting of the vertical pipe 31 and the cutout 283, since the pressing tube 282 is blocked by the vertical pipe 31, when the threaded sleeve 281 rotates, it cannot drive the pressing tube 282 to rotate together.

[0051] Furthermore, the flow control part 34 includes a first water outlet 341 on the side wall of the vertical pipe 31, and a bent rod 342 is connected to the side wall of the vertical pipe 31. The bent rod 342 is located inside the liquid collecting chamber 162, and the end of the bent rod 342 away from the vertical pipe 31 is located above the second water outlet pipe 30. A water inlet 343 and a second water outlet 344 are opened on the side wall of the bent rod 342. The water inlet 343 is located above the second water outlet 344, and the water inlet 343 and the second water outlet 344 are interconnected. Sealing rings are provided above and below the first water outlet and the second water outlet. Due to the setting of the sealing ring, water inside the vertical pipe 31 is prevented from entering the liquid collecting chamber 162. The sealing ring is located between the second water outlet 344 and the water inlet 343, so as to prevent the dye inside the liquid collecting chamber 162 from entering the second water outlet pipe 30.

[0052] It should be noted that when the vertical pipe 31 is not descending, the first water outlet hole 341 and the second water outlet hole 344 are both located inside the fixing block 15 , and the water inlet 343 is located inside the liquid collecting chamber 162 .

[0053] During use, when the vertical pipe 31 descends, the vertical pipe 31 can drive the bent rod 342 to descend together. When the vertical pipe 31 descends, it can drive a part of the bottom of the vertical pipe 31 to enter the first water outlet pipe 29. At this time, the water inside the vertical pipe 31 can enter the first water outlet pipe 29 through the first water outlet. The water inside the first water outlet pipe 29 flushes the dye inside the feed pipe 14 back into the liquid collecting chamber 162. A part of the bottom of the bent rod 342 enters the second water outlet pipe 30. At this time, the dye inside the liquid collecting chamber 162 enters the second water outlet pipe 30 through the water inlet 343 and the second water outlet hole 344.

[0054] Furthermore, the adjusting part 35 includes a conical head 351 on the bent rod 342. The conical head 351 is located directly above the feed pipe 14, and the conical surface of the conical head 351 faces downward. A telescopic tube 352 is connected to the inclined surface of the conical head 351, and the bottom of the telescopic tube 352 is fixedly connected to the inner wall of the liquid collecting chamber 162.

[0055] It should be noted that when water flows from the feed pipe 14 into the liquid collecting chamber 162, when the water flows hit the conical head 351, the inner wall of the liquid collecting chamber 162 can be flushed through the guidance of the inclined surface of the conical head 351. As the height between the conical head 351 and the liquid collecting chamber 162 changes, the water pressure will also change accordingly. When the telescopic tube 352 is in the shortest state, the water pressure is the strongest, and the flushing of the inner wall of the liquid collecting chamber 162 is cleaner. Otherwise, the water pressure gradually decreases.

[0056] Working principle: When performing 3D printing, the staff connects one end of the wire to the print head 13 through the rotating sleeve 23, the conical rubber tube 20, the bent rod 342, the conical head 351 and the feed pipe 14 in sequence, and prints through the print head 13 (the specific working process of the 3D printer is the existing technology and is not described here). When the staff needs to color the printed wire, the staff can choose dyes of different colors according to needs. After the color is determined, the staff can press the lifting rod 184, and the lifting rod 184 drives the limit block 186 to descend inside the vertical slot 181. The lifting rod 184 drives the spiral plate 241, the L-shaped block 242 and the lifting plate 185 to descend together, the lifting plate 185 drives the second spring 187 to contract, and the lifting rod 184 squeezes the guide groove 175, so that the moving block 173 drives the sealing plate 174 to be retracted into the interior of the transverse groove 171, and the moving block 173 drives the first spring 172 to contract. At this time, the dye can enter the interior of the liquid collecting cavity 162 through the infusion channel 161, and then enter the interior of the feed pipe 14. The dye contacts the wire, and when the wire is melted and mixed with the dye, the printed object has color.

[0057] When the staff needs to use mixed colors, in order to ensure that the proportions of various dyes are similar, multiple sealing plates 174 need to be opened at the same time. At this time, the staff can drive the threaded sleeve 281 to make the threaded sleeve 281 descend on the side wall of the rotating sleeve 23, and the threaded sleeve 281 can drive the pressing tube 282 to descend together. The pressing tube 282 squeezes multiple push rods 272 downward, and multiple push rods 272 simultaneously drive multiple L-shaped blocks 242 to descend, and multiple L-shaped blocks 242 drive multiple lifting rods 184 to descend, so that multiple sealing plates 174 are simultaneously collected into the interior of the transverse groove 171. At this time, multiple infusion channels 161 transport dyes at the same time to ensure that the mixed proportions are similar. When coloring is not needed, the staff can rotate the threaded sleeve 281 in the opposite direction, and the first spring 172 recovers to drive the sealing plate 174 to separate the infusion channel 161, and the second spring 187 recovers to drive the lifting rod 184 to rise, and the third spring 262 recovers to drive the lifting ring 261, and the lifting ring 261 drives the push rod 272 to rise and return to the initial position.

[0058] When the staff needs to use mixed colors or needs to mix dyes of different proportions, the staff needs to individually control the lifting rod 184 to lift and lock it. When the lifting rods 184 are manually rotated one by one to lock them, the limit block 186 is located inside the limit groove 182, so that the position of the spiral plate 241 on the lifting rod 184 is changed. When printing is completed, in order to facilitate the staff to unlock the multiple lifting rods 184 efficiently, the staff can drive the rotating sleeve 23 to rotate the rotating sleeve 23 so that the rotating sleeve 23 can move down on the side wall of the fixed sleeve 22. The rotating sleeve 23 can drive the fixed ring 25 to descend, and the fixed ring 25 can drive the lifting ring 261 to descend. The lifting ring 261 drives the third spring 262 to contract, and the lifting ring 261 drives the push rod 272 to descend on the side wall of the vertical rod 273. When the push rod 272 descends, it squeezes the spiral plate 241, so that the spiral plate 241 drives the lifting rod 184 to rotate, so that the lifting rod 184 drives the L-shaped block 242 to disengage from the inside of the limiting groove 182, and the second spring 187 recovers to drive the lifting rod 184 to rise. At the same time, multiple unlockings are performed, so that the sealing plate 174 separates the infusion channel 161.

[0059] When the color of the dye is switched, the inner wall of the feed pipe 14 and the liquid collecting chamber 162 can be cleaned. When the staff drives the rotating sleeve 23 to descend, the rotating sleeve 23 drives the fixed ring 25 to descend, and the fixed ring 25 drives the follower block 33 and the lifting ring 261 to descend together, and the lifting ring 261 drives the push rod 272 to descend together, so that the lifting rod 184 unlocks the restriction on the moving block 173, and first completes the separation of the infusion channel 161 to prevent the dye from continuing to enter the interior of the liquid collecting chamber 162. The follower block 33 drives the vertical pipe 31 to descend, and the vertical pipe 31 drives the curved rod 342 to descend together, and the curved rod 342 drives the conical head 351 to descend. When the first water outlet 341 descends to the interior of the first water outlet pipe 29 along with the vertical pipe 31, the water flow inside the vertical pipe 31 can enter the interior of the first water outlet pipe 29, and the water flow enters the interior of the feed pipe 14 through the first water outlet pipe 29, and the dye inside the feed pipe 14 is flushed into the interior of the liquid collecting chamber 162. When the second water outlet hole 344 is lowered to the inside of the second water outlet pipe 30 along with the bent rod 342, the dye inside the liquid collecting chamber 162 can enter the inside of the second water outlet pipe 30 through the water inlet 343 and the second water outlet hole 344. As the conical head 351 gradually descends, the water flow sprayed from the inside of the feed pipe 14 is guided by the inclined surface of the conical head 351 to flush the inner wall of the liquid collecting chamber 162. After the flushing is completed, the water flow is discharged from the second water outlet pipe 30. At this time, the remaining water flow inside the feed pipe 14 and the vertical pipe 31 can be pumped out by a water pump. Then, the staff drives the rotating sleeve 23 in reverse, so that the rotating sleeve 23 rises to the top of the fixed sleeve 22, so that the vertical pipe 31 rises, and the vertical pipe 31 rises with the bent rod 342, and the first water outlet hole 341 and the second water outlet hole 344 are sealed to prevent subsequent dyes from entering the vertical pipe 31 and the second water outlet pipe 30, so as to facilitate subsequent staff to select dyes to continue printing.

[0060] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A coloring device for a 3D printer, characterized in that: include, A coloring mechanism, comprising a cable rack (10), a protective box (11) and a base (12), wherein a print head (13) is arranged on the base (12), a feed pipe (14) is connected to the print head (13), a fixing block (15) is arranged on the inner wall of the protective box (11), an end of the feed pipe (14) away from the print head (13) is connected to the fixing block (15), an infusion part (16) and a sealing part (17) are arranged on the fixing block (15), a switch part (18) is arranged on the sealing part (17), a wire hole (19) is arranged at the center of the fixing block (15), and a conical rubber tube (20) is arranged inside the wire hole (19); The driving mechanism comprises a groove (21) arranged at the top of the fixed block (15), a fixed sleeve (22) arranged at the center position of the bottom surface of the groove (21), a rotating sleeve (23) arranged on the fixed sleeve (22), a follower portion (24) arranged on the switch portion (18), a fixed ring (25) and a reset portion (26) arranged on the side wall of the rotating sleeve (23), a first pressing portion (27) arranged on the reset portion (26), and a second pressing portion (28) arranged on the side wall of the rotating sleeve (23); The flushing mechanism comprises a first water outlet pipe (29) and a second water outlet pipe (30) at the bottom of the fixed block (15); an end of the first water outlet pipe (29) away from the fixed block (15) is mutually connected with the feed pipe (14), and one end of the first water outlet pipe (29) is adjacent to the printing nozzle (13); a vertical pipe (31) is arranged on the fixed block (15); a water inlet hose (32) is connected to the top of the vertical pipe (31); a follower block (33) and a flow control part (34) are arranged on the side wall of the vertical pipe (31); and an adjusting part (35) is arranged on the flow control part (34).

2. The coloring device for a 3D printer according to claim 1, characterized in that: The infusion section (16) comprises an infusion channel (161) and a liquid collection chamber (162) on the fixed block (15); The sealing portion (17) comprises a transverse groove (171) formed on the fixed block (15); a first spring (172) is arranged inside the transverse groove (171); one end of the first spring (172) is connected to a moving block (173); a sealing plate (174) is arranged on the moving block (173); and a guide groove (175) is arranged on the top of the moving block (173).

3. The coloring device for a 3D printer according to claim 2, characterized in that: The switch portion (18) comprises a vertical slot (181), a limiting slot (182) and a storage slot (183) on the fixed block (15); a lifting rod (184) is arranged inside the storage slot (183); a lifting plate (185) and a limiting block (186) are connected to the side wall of the lifting rod (184); and a second spring (187) is connected to the bottom of the lifting plate (185).

4. The coloring device for a 3D printer according to claim 3, characterized in that: The follower (24) comprises a spiral plate (241) on the side wall of the lifting rod (184), and the bottom of the spiral plate (241) is connected to an L-shaped block (242).

5. The coloring device for a 3D printer according to claim 4, characterized in that: The resetting portion (26) comprises a lifting ring (261) on the side wall of the rotating sleeve (23), and a third spring (262) is connected to the bottom of the lifting ring (261).

6. The coloring device for a 3D printer according to claim 5, characterized in that: The first pressing portion (27) comprises an annular groove (271) on the side wall of the lifting ring (261), a push rod (272) is arranged inside the annular groove (271), a vertical rod (273) is connected to the bottom surface inside the groove (21), the push rod (272) is sleeved on the side wall of the vertical rod (273), and one end of the push rod (272) is located between the L-shaped block (242) and the spiral plate (241).

7. The coloring device for a 3D printer according to claim 6, characterized in that: The second pressing portion (28) comprises a threaded sleeve (281) on the side wall of the rotating sleeve (23), a pressing tube (282) is provided on the side wall of the threaded sleeve (281), and a notch (283) is provided on the pressing tube (282).

8. The coloring device for a 3D printer according to claim 7, characterized in that: The flow control portion (34) comprises a first water outlet hole (341) on the side wall of the vertical pipe (31); a bent rod (342) is connected to the side wall of the vertical pipe (31); and a water inlet (343) and a second water outlet hole (344) are provided on the bent rod (342).

9. The coloring device for a 3D printer according to claim 8, characterized in that: The adjusting portion (35) comprises a conical head (351) on the bent rod (342), and a telescopic tube (352) is connected to the inclined surface of the conical head (351).

10. A 3D printer, characterized in that: The invention comprises a coloring device for a 3D printer according to any one of claims 1 to 9.

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