A color mixing 3D printer with controllable mixing ratio and a color mixing regulation method

Abstract

The present invention relates to a color mixing 3D printer capable of controlling the mixing ratio and a color mixing regulation method, including: a conveying part, two of the conveying parts are arranged on the print head, and the two conveying parts are used for conveying granular material consumables of different colors; a sleeve part, the sleeve part is arranged on the print head, and the sleeve part is placed outside the periphery of the lower end of the conveying part, and the sleeve part is used for the consumables to pass through; a discharge nozzle, the discharge nozzle is communicated with the lower end of the sleeve part, and the discharge nozzle is used for extruding the consumables; The beneficial effect of the present invention is that the present invention replaces the wire extrusion structure and hot melting structure in the existing 3D printing technology through the conveying part, so that the consumables will not be interrupted during the extrusion and conveying process, making the forming effect of the printed object better and ensuring the smoothness of the printed object; and the present invention is also provided with two regulating plates driven by a driving part to move, and the two regulating plates can change the angle in the sleeve part to divide the area of the passing area of the hot-melt consumables in the sleeve part.

Description

Technical Field

[0001] The present invention relates to the technical field of 3D printers, and particularly relates to a color mixing 3D printer capable of controlling the mixing ratio and a color mixing regulation method. Background Art

[0002] With the development of 3D printing technology, the products printed by desktop printers are no longer limited to single colors. Its working principle is that two printing nozzles of different colors are used in an interactive manner. The following problems exist:

[0003] The printing consumables are in the form of wires. During the process of replacing the wire-shaped consumables, it is easy to cause an interruption in the melting process of the printed object, resulting in a problem that the printing work is not continuous and the printing effect is not smooth.

[0004] The wire extruded through the hot melt nozzle is columnar, and the ratio of the two consumable colors on the columnar cross-section cannot be controlled, so that the same batch of printing work cannot obtain diverse printing effects. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the technical problems that the consumable discharging method in the prior art is prone to poor connection of printing work during the material replacement process and the color ratio in the single batch of consumable discharging process cannot be controlled, and to provide a color mixing 3D printer capable of controlling the mixing ratio and a color mixing regulation method.

[0006] The technical solution adopted by the present invention to solve its technical problems is: a color mixing 3D printer capable of controlling the mixing ratio, including:

[0007] A conveying part, two of the conveying parts are arranged on the print head, and the two conveying parts are used for conveying granular consumables of different colors;

[0008] A sleeve part, the sleeve part is arranged on the print head, and the sleeve part is placed outside the lower end of the conveying part, and the sleeve part is used for the consumables to pass through;

[0009] A discharging nozzle, the discharging nozzle is connected to the lower end of the sleeve part, and the discharging nozzle is used for extruding the consumables;

[0010] A regulating plate, two of the regulating plates are hinged inside the sleeve part, and the two regulating plates are meshed with each other. The two regulating plates are used for separating the cross-sectional area of the sleeve part;

[0011] A driving part, the driving part is arranged on the print head through a plurality of brackets, and the driving part is used for driving the two regulating plates to rotate, wherein

[0012] Drive the driving part, and the two regulating plates can rotate to divide the area of the discharge nozzle in a fan shape, so that the two-color consumables are regulated in proportion and then mixed and extruded from the discharge nozzle.

[0013] Further, the conveying part includes an air pump arranged on the print head, two screw extruders connected to the two output ends of the air pump and installed on the print head, and two discharge pipes connected to the output ends of the two screw extruders;

[0014] The two discharge pipes are inserted into the sleeve part, where

[0015] After driving the air pump, the two-color pellet material can enter the two screw extruders and be extruded in a filamentous form through the two discharge pipes.

[0016] Further, the sleeve part includes a first connecting pipe arranged on the print head and sleeved outside the two discharge pipes, a second connecting pipe connected to the lower parallel part of the first connecting pipe through two arc-shaped frames, and a partition plate arranged at the midline position of the first connecting pipe;

[0017] The partition plate and the first connecting pipe are provided with a plugging plate for closing the boundary of the discharge pipe.

[0018] Further, the driving part includes a motor fixedly arranged through one of the brackets, a connecting shaft arranged on the output shaft of the motor and rotatably connected to the other two brackets, and a worm gear fitted outside the connecting shaft;

[0019] Drive the motor, and the connecting shaft can drive the worm gear to rotate.

[0020] Further, the driving part further includes a ring rotatably arranged outside the gap between the first connecting pipe and the second connecting pipe, a ring groove arranged on the inner side of the ring, a worm wheel fixedly arranged outside the ring, and two push blocks arranged in the ring groove;

[0021] The worm wheel meshes with the worm gear, where

[0022] The worm gear can drive the worm wheel to rotate, and the worm wheel can drive the ring to rotate, so that the push block can push the regulating plate to rotate.

[0023] Further, the regulating plate includes a gear hinged to the partition plate, and a plate member integrally arranged on the gear;

[0024] The two gears mesh with each other, where

[0025] When the push block pushes one of the plate members to rotate, one of the gears can drive the other gear to rotate, so that the other plate member rotates synchronously.

[0026] Further, the upper section of the plate member penetrates through the gap between the first connecting pipe and the second connecting pipe and fits against the annular groove;

[0027] The middle section of the plate member fits against the inner wall of the second connecting pipe, and the lower section of the plate member fits against the inner wall of the upper section of the discharge nozzle. Among them,

[0028] When the plate member rotates, it can rub against the annular groove, the second connecting pipe, and the discharge nozzle.

[0029] Further, the lower end surface of the plate member is V-shaped, and the pointed angle of the lower end surface of the plate member faces the discharge nozzle.

[0030] Further, the angle range between the two plate members is between 120 degrees and 180 degrees.

[0031] Color mixing control method capable of controlling the mixing ratio:

[0032] S1. Place the input end of the air pump into the storage cylinders of different colored granular materials prepared in advance, and turn on the power of the air pump to input different colored granular materials into the two screw extruders;

[0033] S2. Through the two screw extruders, the granular materials are hot-melt extruded in a filament state towards the discharge pipe, the first connecting pipe, and the second connecting pipe;

[0034] S3. Turn on the power of the motor, so that the connecting shaft drives the worm to rotate, the worm drives the worm gear to rotate, the circular ring drives the push block to push the control plate to rotate, and the two control plates rotate to divide the second connecting pipe into two discharge channels with different areas;

[0035] S4. The consumables of the two color materials are condensed after passing through the two discharge channels and are extruded from the discharge nozzle.

[0036] The beneficial effects of the present invention are that the present invention replaces the wire extrusion structure and the hot-melt structure in the existing 3D printing technology through the conveying part, so that the consumables can be directly conveyed and used during the storage process, and can be replenished in time according to the reduction of the consumables in the storage cylinder, so that the consumables will not be interrupted during the extrusion and conveying processes, making the forming effect of the printed object better and ensuring the smoothness of the printed object;

[0037] Moreover, the present invention is also provided with two control plates driven to move by the driving part. The two control plates can change the angle in the sleeve part to divide the passing area of the hot-melt consumables in the sleeve part, so that the ratio of the wire extrusion during the printing process in a period of time can be flexibly adjusted, making the printing work diverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The present invention will be further described below with reference to the drawings and embodiments.

[0039] Figure 1 is the perspective view of the present invention;

[0040] Figure 2 is the perspective view of the preferred embodiment of the present invention;

[0041] Figure 3 is the perspective view of the driving part of the present invention;

[0042] Figure 4 is the perspective view of another angle of the driving part of the present invention;

[0043] Figure 5 is the internal state diagram of the driving part of the present invention;

[0044] Figure 6 is the front view of the regulation board of the present invention;

[0045] Figure 7 is the first bottom view state diagram of the regulation board of the present invention;

[0046] Figure 8 is the second bottom view state diagram of the regulation board of the present invention;

[0047] Figure 9 is the Figure 7 enlarged view of part A in the present invention.

[0048] In the figure:

[0049] 1. Feeding part; 11. Air pump; 12. Screw extruder; 13. Discharge pipe; 2. Print head; 3. Sleeve part; 31. First connecting pipe; 32. Second connecting pipe; 33. Partition board; 4. Discharge nozzle; 5. Regulation board; 51. Gear; 52. Plate member; 6. Driving part; 61. Motor; 62. Connecting shaft; 63. Worm; 64. Ring; 65. Ring groove; 66. Worm gear; 67. Pusher block; 7. Arc-shaped frame. Detailed implementation manners

[0050] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0051] As Figures 1-9 shown, the present invention provides a color mixing 3D printer capable of controlling the mixing ratio, including:

[0052] Feeding part 1, two said feeding parts 1 are arranged on the print head 2, and the two said feeding parts 1 are used for feeding granular material consumables of different colors. The print head 2 is the prior art removing the wire extrusion mechanism and the hot melt nozzle, and it can move along the X-axis and the Y-axis, and will not be further explained here;

[0053] The sleeve part 3 is arranged on the print head 2, and the sleeve part 3 is placed around the lower end of the conveying part 1. The sleeve part 3 is used for the consumable to pass through, and the sleeve part 3 communicates the conveying part 1 and the print head 2;

[0054] The discharging nozzle 4 is connected to the lower end of the sleeve part 3. The discharging nozzle 4 is used for extruding the consumable; the discharging nozzle 4 is in a shape with a variable diameter;

[0055] The regulating plates 5, two of the regulating plates 5 are hinged in the sleeve part 3, and the two regulating plates 5 mesh with each other. The two regulating plates 5 are used for separating the sleeve part 3 and the cross-sectional area of the sleeve part 3;

[0056] The driving part 6 is arranged on the print head 2 through a plurality of brackets, and the driving part 6 is used for driving the two regulating plates 5 to rotate. Among them

[0057] By driving the driving part 6, the two regulating plates 5 can rotate to divide the area of the discharging nozzle 4 in a fan shape, so that the two-color consumable is mixed and extruded from the discharging nozzle 4 after the regulation ratio. Specifically, in the prior art, the consumable of the 3D printer is in a filament shape. During use, it needs to be inserted into the conveying mechanism of the print head 2 and conveyed towards the melting nozzle through the conveying mechanism for extrusion. The consumable is generally wound into a disk shape. When the print work is in progress and the consumable needs to be replaced, the gap in replacing the consumable will cause the printed model to have faults and roughness. In the present invention, the conveying part 1 replaces the wire extrusion structure and the hot melting structure in the existing 3D printing technology, so that the consumable can be directly conveyed and used during the storage process. The consumable is placed in a storage barrel in a granular state, and the input end of the conveying part 1 is also arranged in the storage barrel to convey the granular consumable. It can be replenished in time according to the reduction of the consumable in the storage barrel, so that the consumable will not be interrupted during the extrusion and conveying process, and the forming effect of the printed object is better, ensuring the smoothness of the printed object, so that the over-layer of the supplementary material will not cause delay in the printing time. Moreover, the present invention also provides two regulating plates 5 driven by the driving part 6. The two regulating plates 5 can change the angle in the sleeve part 3 to divide the passing area of the hot-melt consumable in the sleeve part 3. The cylindrical space of the sleeve part 3 can be divided into two sectors with different areas or two semi-circles with the same area, so that the ratio of the wire output during the printing process in a period of time can be flexibly adjusted, making the printing work diverse and the display effect of the printed model richer.

[0058] Optionally, the conveying part 1 includes an air pump 11 arranged on the print head 2, two screw extruders 12 connected to the two output ends of the air pump 11 and installed on the print head 2. The air pump 11 has two air conveying channels, and each air conveying channel is connected to the air inlet end of each screw extruder 12, and two discharging pipes 13 connected to the output ends of the two screw extruders 12;

[0059] Two of the discharge pipes 13 are inserted into the sleeve portion 3, where

[0060] After driving the air pump 11, the two-color granular material can enter the two screw extruders 12 and be extruded in a filamentous form through the two discharge pipes 13. Specifically, when the printing work is in progress or when materials need to be replenished, the power supply of the air pump 11 is turned on. The air pump 11 works to convey the granular material consumables of different colors at the two storage positions to the two screw extruders 12. The two screw extruders 12 melt and extrude the received materials in a filamentous form. Its work can be carried out continuously, maintaining a long-term printing state, improving the quality and efficiency of the printing work. Compared with the prior art, the process of withdrawing and loading materials for material replacement is omitted, and the procedure is simplified.

[0061] Optionally, the sleeve portion 3 includes a first connecting pipe 31 provided on the print head 2 and sleeved outside the two discharge pipes 13, a second connecting pipe 32 connected to the parallel lower ends of the first connecting pipe 31 through two arc-shaped frames 7, and a partition plate 33 provided at the midline position of the first connecting pipe 31. The lower end surface of the partition plate 33 is coplanar with the lower end surface of the discharge pipe 13;

[0062] The partition plate 33 and the first connecting pipe 31 are provided with a sealing plate for closing the boundary of the discharge pipe 13. Specifically, the screw extruder 12 conveys the consumables through the discharge pipe 13 towards the second connecting pipe 32 for hot melting. The two arc-shaped frames 7 provide a connecting function for the first connecting pipe 31 and the second connecting pipe 32, preventing separation caused by the gap between them. The sealing plate seals all the gaps between the discharge pipe 13 and the partition plate 33 and the first connecting pipe 31, so that the extrusion and conveying work of the consumables will not be affected.

[0063] Optionally, the driving portion 6 includes a motor 61 fixedly provided through one of the brackets. The motor 61 is a servo motor or a stepping motor, a connecting shaft 62 provided on the output shaft of the motor 61 and rotatably connected to the other two brackets, and a worm 63 fitted outside the connecting shaft 62;

[0064] When driving the motor 61, the connecting shaft 62 can drive the worm 63 to rotate. The driving portion 6 further includes a circular ring 64 rotatably provided outside the gap between the first connecting pipe 31 and the second connecting pipe 32, a ring groove 65 provided on the inner side of the circular ring 64. The upper inner edge of the second connecting pipe 32 is a slope, facilitating the removal of the molten consumables and preventing them from accumulating in the ring groove 65 through the gap between the first connecting pipe 31 and the second connecting pipe 32. A worm gear 66 fixedly provided outside the circular ring 64, and two push blocks 67 provided in the ring groove 65. The two push blocks 67 are located at the left and right ends of the regulating plate 5;

[0065] The worm gear 66 meshes with the worm 63, wherein,

[0066] The worm 63 can drive the worm gear 66 to rotate, and the worm gear 66 can drive the ring 64 to rotate, so that the push block 67 pushes the regulation plate 5 to rotate. Specifically, the motor 61 can drive the connecting shaft 62 to rotate forward or backward, and its force is transmitted to the worm gear 66 through the worm 63, so that the worm gear 66 drives the push block 67 to rotate forward or backward through the ring 64. The push block 67 can push the regulation plate 5 in two directions, increasing the flexibility of the angle regulation operation of the regulation plate 5 and facilitating its force application. The partition plate 33 plays a supporting role in connecting the regulation plate 5 and makes the rotation of the partition plate 33 smooth.

[0067] Optionally, the regulation plate 5 includes a gear 51 hinged to the partition plate 33 and a plate member 52 integrally provided on the gear 51;

[0068] The two gears 51 mesh with each other, wherein,

[0069] When the push block 67 pushes one of the plate members 52 to rotate, one of the gears 51 can drive the other gear 51 to rotate, so that the other plate member 52 rotates synchronously. Specifically, the push block 67 rotates with the ring 64 and can push the plate member 52 that partially penetrates the gap between the first connecting pipe 31 and the second connecting pipe 32. The plate member 52 rotates in a state of being hinged to the partition plate 33, and drives the other plate member 52 to rotate through the transmission effect between the two gears 51, so as to simply and quickly adjust the angles of the two plate members 52 and maintain the adjusted angles.

[0070] Optionally, the upper section of the plate member 52 penetrates the gap between the first connecting pipe 31 and the second connecting pipe 32 and fits the ring groove 65;

[0071] The middle section of the plate member 52 fits the inner wall of the second connecting pipe 32, and the lower section of the plate member 52 fits the upper inner wall of the discharge nozzle 4, wherein,

[0072] When the plate member 52 rotates, it can rub the ring groove 65, the second connecting pipe 32 and the discharge nozzle 4. Specifically, the shape of the plate member 52 facilitates its force application process, and the friction state during the movement of the plate member 52 also ensures the sealing performance during the conveying and extrusion of the consumables, making the mixing and regulation state of the two-color pigments stable.

[0073] Optionally, the lower end face of the plate member 52 is V-shaped, and the pointed angle of the lower end face of the plate member 52 faces the discharge nozzle 4. Specifically, the bottom end of the plate member 52 gradually becomes thinner from top to bottom, so that there is a buffering and coagulation effect after the two-color consumable is conveyed and extruded, which is beneficial to the balanced combination of the two-color consumables and reduces the appearance of seams between the two-color consumables.

[0074] Optionally, the angle between the two plate members 52 ranges from 120 degrees to 180 degrees. Specifically, the angle between the two plate members 52 is set so that the extrusion amount of the consumable is not easily beyond the area range of the two plate members 52.

[0075] Inspired by the ideal embodiments of the present invention described above, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A color mixing 3D printer capable of controlling the mixing ratio, characterized in that, Including: A conveying part (1), two of the conveying parts (1) are arranged on a print head (2), and the two conveying parts (1) are used for conveying granular material consumables of different colors; A sleeve part (3), the sleeve part (3) is arranged on the print head (2), and the sleeve part (3) is placed around the lower end of the conveying part (1), and the sleeve part (3) is used for the consumables to pass through; A discharge nozzle (4), the discharge nozzle (4) is connected to the lower end of the sleeve part (3), and the discharge nozzle (4) is used for extruding the consumables; A regulating plate (5), two of the regulating plates (5) are hinged inside the sleeve part (3), and the two regulating plates (5) mesh with each other, and the two regulating plates (5) are used for separating the cross-sectional area of the sleeve part (3) and the sleeve part (3); A driving part (6), the driving part (6) is arranged on the print head (2) through a plurality of brackets, and the driving part (6) is used for driving the two regulating plates (5) to rotate, wherein By driving the driving part (6), the two regulating plates (5) can rotate to fan-shapedly divide the area of the discharge nozzle (4), so that the two-color consumables are mixed and extruded from the discharge nozzle (4) after the regulation ratio; The sleeve part (3) includes a first connecting pipe (31) arranged on the print head (2) and sleeved outside two discharge pipes (13), a second connecting pipe (32) connected to the parallel lower ends of the first connecting pipe (31) through two arc-shaped frames (7), and a partition plate (33) arranged at the middle line position of the first connecting pipe (31); The partition plate (33) and the first connecting pipe (31) are provided with a blocking plate for closing the boundary of the discharge pipe (13); The driving part (6) includes a motor (61) fixedly arranged through one of the brackets, a connecting shaft (62) arranged on the output shaft of the motor (61) and rotatably connected to the other two brackets, and a worm (63) fitted outside the connecting shaft (62); By driving the motor (61), the connecting shaft (62) can drive the worm (63) to rotate; The driving part (6) further includes a ring (64) rotatably arranged outside the gap between the first connecting pipe (31) and the second connecting pipe (32), a ring groove (65) arranged inside the ring (64), a worm gear (66) fixedly arranged outside the ring (64), and two push blocks (67) arranged in the ring groove (65); The worm gear (66) meshes with the worm (63), wherein, The worm (63) can drive the worm gear (66) to rotate, and the worm gear (66) can drive the ring (64) to rotate, so that the push block (67) pushes the regulating plate (5) to rotate; The regulating plate (5) includes a gear (51) hinged to the partition plate (33), and a plate member (52) integrally arranged on the gear (51); The two gears (51) mesh with each other, wherein, When the pushing block (67) pushes one of the plate members (52) to rotate, one of the gears (51) can drive the other gear (51) to rotate, so that the other plate member (52) rotates synchronously.

2. The color mixing 3D printer capable of controlling the mixing ratio according to claim 1, characterized in that The conveying part (1) includes an air pump (11) arranged on the print head (2), two screw extruders (12) communicating with two output ends of the air pump (11) and installed on the print head (2), and two discharge pipes (13) connected to the output ends of the two screw extruders (12); The two discharge pipes (13) are inserted into the sleeve part (3), where After driving the air pump (11), the two-color granular material can enter the two screw extruders (12) and be extruded in a filamentous state through the two discharge pipes (13).

3. The color mixing 3D printer capable of controlling the mixing ratio according to claim 2, characterized in that The upper section of the plate member (52) is inserted into the gap between the first connecting pipe (31) and the second connecting pipe (32) and fits against the annular groove (65); The middle section of the plate member (52) fits against the inner wall of the second connecting pipe (32), and the lower section of the plate member (52) fits against the upper inner wall of the discharge nozzle (4), where When the plate member (52) rotates, it can rub against the annular groove (65), the second connecting pipe (32) and the discharge nozzle (4).

4. The color mixing 3D printer capable of controlling the mixing ratio according to claim 3, characterized in that The lower end surface of the plate member (52) is V-shaped, and the sharp corner of the lower end surface of the plate member (52) faces the discharge nozzle (4).

5. The color mixing 3D printer capable of controlling the mixing ratio according to claim 4, characterized in that The angle range between the two plate members (52) is between 120 degrees and 180 degrees.

6. For the color mixing 3D printer capable of controlling the mixing ratio according to any one of claims 1-5, its color mixing control method is: First step: Put the input end of the air pump (11) into the storage cylinders of different color granular materials prepared in advance, and turn on the power of the air pump (11) to input different color granular materials into the two screw extruders (12); Second step: Through the two screw extruders (12), the granular materials are hot-melt extruded in a filament state towards the discharge pipe (13), the first connecting pipe (31) and the second connecting pipe (32); Third step: Turn on the power of the motor (61), so that the connecting shaft (62) drives the worm (63) to rotate, the worm (63) drives the worm wheel (66) to rotate, the ring (64) drives the pushing block (67) to push the regulating plate (5) to rotate, and the two regulating plates (5) rotate to divide the second connecting pipe (32) into two discharge channels with different areas; Fourth step: The consumables of the two color materials are condensed and extruded from the discharge nozzle (4) after passing through the two discharge channels.

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