Color mixing 3D printer capable of controlling material mixing proportion and color mixing regulation and control method

Abstract

The invention relates to a color mixing 3D printer capable of controlling the material mixing proportion and a color mixing regulation and control method, and the color mixing 3D printer comprises two conveying parts which are arranged on a printing head and used for conveying particle consumables of different colors; the sleeve part is arranged on the printing head, the sleeve part is arranged on the periphery of the lower end of the conveying part, and the sleeve part is used for allowing consumables to pass through; the discharging spray head is communicated with the lower end of the sleeve part, and the discharging spray head is used for extruding consumables; the 3D printing device has the beneficial effects that a wire extrusion structure and a hot melting structure in an existing 3D printing technology are replaced by the conveying part, so that consumables cannot be interrupted in the extrusion and conveying process, the forming effect of a printed object is better, and the smooth degree of the printed object is guaranteed; and two regulation and control plates which are driven by the driving part to move are further arranged, and the angles of the two regulation and control plates can be changed in the sleeve part so as to divide the area of a passing area of the hot melting consumable in the sleeve part.

Description

Technical Field

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

[0002] With the development of 3D printing technology, the products printed by desktop printers are no longer limited to monochrome. Its working principle is the interactive use of two print heads of different colors, which has the following problems: Printing consumables are linear. When replacing linear consumables, the melting process of the printed material is easily interrupted, resulting in discontinuous printing and uneven printing effects. The wire extruded through the hot melt nozzle is cylindrical, and it is impossible to control the ratio of the two colors of the consumables on the cylindrical cross-section, so that the same batch of printing work cannot obtain diverse printing effects. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to overcome the technical problem that the consumable material discharge method in the prior art easily causes poor connection of printing work during material replacement and the technical problem that the color ratio in a single batch of consumable material discharge process cannot be controlled, and to provide a color mixing 3D printer with controllable mixing ratio and a color mixing control method.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a color mixing 3D printer capable of controlling the mixing ratio, comprising: A conveying part, two of which are arranged on the print head, and the two conveying parts are used to convey granular consumables of different colors; A sleeve portion, the sleeve portion is arranged on the print head and is placed on the periphery of the lower end of the conveying portion, and the sleeve portion is used for the consumables to pass through; A discharge nozzle, the discharge nozzle is connected to the lower end of the sleeve portion, and the discharge nozzle is used for extruding consumables; An adjusting plate, wherein two adjusting plates are hinged in the sleeve part and meshed with each other, and the two adjusting plates are used to separate the sleeve part from the cross-sectional area of ​​the sleeve part; A driving unit, which is arranged on the print head through a plurality of brackets, and is used to drive the two regulating plates to rotate, wherein By driving the driving part, the two regulating plates can rotate to divide the discharge nozzle area in a fan shape, so that the two-color consumables can be mixed and extruded from the discharge nozzle after the ratio is adjusted.

[0005] Further, the conveying part includes an air pump arranged on the print head, two screw extruders connected to 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; The two discharge pipes are inserted into the sleeve part, wherein After the air pump is driven, the two-color granular material can enter the two screw extruders and be extruded through the two discharge pipes in the form of filaments.

[0006] Further, the sleeve portion includes a first connecting tube arranged on the print head and sleeved on the outside of the two discharge tubes, a second connecting tube connected to the lower end of the first connecting tube in parallel through two arc-shaped frames, and a partition plate arranged at the midline position of the first connecting tube; The partition plate and the first connecting pipe are provided with a blocking plate for closing the boundary of the discharge pipe.

[0007] Further, the driving part includes a motor fixedly arranged by one of the brackets, a connecting shaft arranged on the output shaft of the motor and rotatably connecting the other two brackets, and a worm gear embedded outside the connecting shaft; The motor is driven, and the connecting shaft can drive the worm to rotate.

[0008] Further, the driving part also includes a circular ring rotatably arranged outside the gap between the first connecting pipe and the second connecting pipe, a circular groove arranged inside the circular ring, a worm gear fixedly arranged outside the circular ring, and two push blocks arranged in the circular groove; The worm wheel meshes with the worm, wherein The worm can drive the worm wheel to rotate, and the worm wheel can drive the ring to rotate, so that the push block pushes the regulating plate to rotate.

[0009] Further, the regulating plate includes a gear hingedly arranged on the partition plate, and a plate member integrally arranged on the gear; The two gears mesh with each other, wherein: When the push block pushes one of the plates to rotate, one of the gears can drive the other gear to rotate, so that the other plate rotates synchronously.

[0010] Furthermore, the upper section of the plate is inserted through the gap between the first connecting pipe and the second connecting pipe and fits the annular groove; The middle section of the plate is in contact with the inner wall of the second connecting pipe, and the lower section of the plate is in contact with the inner wall of the upper section of the discharge nozzle, wherein: When the plate rotates, it can rub against the annular groove, the second connecting pipe and the discharge nozzle.

[0011] Furthermore, the lower end surface of the plate is V-shaped, and the sharp corner of the lower end surface of the plate faces the discharge nozzle.

[0012] Furthermore, the angle between the two plates ranges from 120 degrees to 180 degrees.

[0013] Color mixing control method that can control the mixing ratio: S1. Place the input end of the air pump into the storage cylinder of the granular materials of different colors prepared in advance, and turn on the power of the air pump to input the granular materials of different colors into the two screw extruders; S2, hot-melt extruding the granular material into filaments toward the discharge pipe, the first connecting pipe and the second connecting pipe through two screw extruders; S3, turn on the motor power supply, so that the connecting shaft drives the worm to rotate, the worm drives the worm wheel to rotate, and the ring drives the push block to push the regulating plate to rotate. The two regulating plates rotate to divide the second connecting pipe into two discharge channels with different areas; S4. The two color materials pass through two discharge channels and then condense and are extruded from the discharge nozzle.

[0014] The beneficial effect of the present invention is that the present invention replaces the wire extrusion structure and hot melt structure in the existing 3D printing technology with a conveying part, so that the consumables can be directly conveyed and used during the storage process, and the consumables in the storage barrel can be replenished in time according to the reduction of the consumables, so that the consumables will not be interrupted during the extrusion and conveying process, so that the molding effect of the printed object is better and the smoothness of the printed object is guaranteed; The present invention is also provided with two control plates driven by a driving part. The two control plates can change their angles in the sleeve part to divide the area of ​​the hot-melt consumables passing through the sleeve part, so that the proportion of wire output during the printing process in a time period can be flexibly adjusted, making the printing work more diverse. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 is a stereogram of the present invention; Figure 2 is a perspective view of a preferred embodiment of the present invention; Figure 3 is a perspective view of a driving unit of the present invention; Figure 4 is a three-dimensional diagram of the driving unit of the present invention from another perspective; Figure 5 is an internal state diagram of the driving unit of the present invention; Figure 6 is a front view of the control panel of the present invention; Figure 7is a bottom view of the control panel of the present invention in a first state; Figure 8 is a bottom-up view of the control panel of the present invention in a second state; Fig. 9 The present invention Figure 7 Enlarged view of point A in the middle.

[0017] In the figure: 1. Conveying unit; 11. Air pump; 12. Screw extruder; 13. Discharging pipe; 2. Print head; 3. Sleeve unit; 31. First connecting pipe; 32. Second connecting pipe; 33. Partition plate; 4. Discharging nozzle; 5. Control plate; 51. Gear; 52. Plate; 6. Driving unit; 61. Motor; 62. Connecting shaft; 63. Worm; 64. Ring; 65. Ring groove; 66. Worm wheel; 67. Push block; 7. Arc frame. DETAILED DESCRIPTION

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0019] like Figure 1-9 As shown, the present invention provides a color mixing 3D printer capable of controlling the mixing ratio, comprising: Conveying part 1, two conveying parts 1 are arranged on the print head 2, and the two conveying parts 1 are used to convey granular consumables of different colors. The print head 2 is the existing technology without the wire extrusion mechanism and the hot melt nozzle, and it can move along the X-axis and the Y-axis, which will not be explained here; A sleeve portion 3, the sleeve portion 3 is arranged on the print head 2, and the sleeve portion 3 is placed on the periphery of the lower end of the conveying portion 1, the sleeve portion 3 is used for the consumables to pass through, and the sleeve portion 3 connects the conveying portion 1 and the print head 2; A discharge nozzle 4, the discharge nozzle 4 is connected to the lower end of the sleeve portion 3, and the discharge nozzle 4 is used for extruding consumables; the discharge nozzle 4 is a variable diameter shape; An adjusting plate 5, wherein two adjusting plates 5 are hinged in the sleeve portion 3 and meshed with each other, and the two adjusting plates 5 are used to separate the sleeve portion 3 and the cross-sectional area of ​​the sleeve portion 3; A driving unit 6, wherein the driving unit 6 is arranged on the print head 2 through a plurality of brackets, and the driving unit 6 is used to drive the two regulating plates 5 to rotate, wherein By driving the driving part 6, the two regulating plates 5 can rotate to divide the discharge nozzle 4 area into a fan shape, so that the two-color consumables can be mixed and extruded from the discharge nozzle 4 after adjusting the ratio. Specifically, in the prior art, the consumables of the 3D printer are in filament form, and need to be inserted into the conveying mechanism of the print head 2 when in use, and are conveyed toward the melting nozzle through the conveying mechanism to be extruded. The consumables are generally rolled into a disc shape, and when the printing work is in progress and the consumables need to be replaced, the gap in replacing the consumables will cause the printed model to be faulted and rough. The present invention replaces the filament extrusion structure and the hot melt structure in the existing 3D printing technology with the conveying part 1, so that the consumables can be directly conveyed and used during the storage process. The consumables are placed in the storage barrel in a granular state, and the input end of the conveying part 1 is also provided with The granular consumables are transported in the storage barrel, and can be replenished in time according to the reduction of the consumables in the storage barrel, so that the consumables will not be interrupted during the extrusion and transportation process, so that the molding effect of the printed object is better, the smoothness of the printed object is guaranteed, and the passing layer of the supplementary materials will not cause delays in printing time. The present invention is also provided with 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 area of ​​the hot-melt consumables passing through the sleeve part 3. The cylindrical space of the sleeve part 3 can be divided into two sectors with different areas or two semicircles with the same area, so that the proportion of wire output during the printing process in a time period can be flexibly adjusted, so that the printing work has diversity and the display effect of the printed model is richer.

[0020] Optionally, the conveying unit 1 includes an air pump 11 arranged on the print head 2, two screw extruders 12 connected to two output ends of the air pump 11 and installed on the print head 2, the air pump 11 has two air delivery channels, each of which is connected to the air inlet end of each screw extruder 12, 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 portion 3, wherein After driving the air pump 11, the two-color granular material can enter the two screw extruders 12 and be extruded in the form of filaments through the two discharge pipes 13. Specifically, when printing is in progress or when materials need to be supplemented, the power of the air pump 11 is turned on, and the air pump 11 works to transport the granular materials of different colors in the two storage positions to the two screw extruders 12. The two bolt extruders 12 hot-melt extrude the received materials in the form of filaments. The work can be carried out continuously, maintaining a long-term printing state, improving the quality and efficiency of the printing work, and compared with the prior art, the material return and loading process of changing materials is omitted, simplifying the procedure.

[0021] Optionally, the sleeve portion 3 includes a first connecting tube 31 arranged on the print head 2 and sleeved on the outside of the two discharge tubes 13, a second connecting tube 32 connected to the lower end of the first connecting tube 31 in parallel through two arc-shaped frames 7, and a partition plate 33 arranged at the midline position of the first connecting tube 31, and the lower end surface of the partition plate 33 is coplanar with the lower end surface of the discharge tube 13; The partition plate 33 and the first connecting tube 31 are provided with a sealing plate for closing the boundary of the discharge tube 13. Specifically, the bolt extruder 12 hot-melt transports the consumables through the discharge tube 13 toward the second connecting tube 32. The two arc frames 7 provide a connection function for the first connecting tube 31 and the second connecting tube 32 to avoid separation caused by the gap therebetween. The sealing plate completely blocks the gap between the discharge tube 13 and the partition plate 33 and the first connecting tube 31, so that the extrusion and transportation of the consumables will not be affected.

[0022] Optionally, the driving unit 6 includes a motor 61 fixedly arranged by one of the brackets, the motor 61 is a servo motor or a stepping motor, a connecting shaft 62 arranged on the output shaft of the motor 61 and rotatingly connecting the other two brackets, and a worm 63 embedded outside the connecting shaft 62; The motor 61 is driven, and the connecting shaft 62 can drive the worm 63 to rotate. The driving part 6 also includes a ring 64 rotatably arranged outside the gap between the first connecting tube 31 and the second connecting tube 32, a ring groove 65 arranged inside the ring 64, and the inner edge of the upper section of the second connecting tube 32 is a bevel, so that the molten consumables can be easily removed and avoid being accumulated in the ring groove 65 through the gap between the first connecting tube 31 and the second connecting tube 32, a worm gear 66 fixedly arranged outside the ring 64, and two push blocks 67 arranged in the ring groove 65, and the two push blocks 67 are located at the left and right ends of the regulating plate 5; The worm wheel 66 meshes with the worm 63, wherein: The worm 63 can drive the worm wheel 66 to rotate, and the worm wheel 66 can drive the ring 64 to rotate, so that the push block 67 pushes the regulating plate 5 to rotate. Specifically, the motor 61 can drive the connecting shaft 62 to rotate forward or reversely, and its force is transmitted to the worm wheel 66 through the worm 63, so that the worm wheel 66 drives the push block 67 to rotate forward or reversely through the ring 64. The push block 67 can push the regulating plate 5 in two directions, which increases the flexibility of the angle adjustment operation of the regulating plate 5 and facilitates its force. The partition plate 33 supports the connection of the regulating plate 5, so that the rotation of the partition plate 33 is smooth.

[0023] Optionally, the regulating plate 5 includes a gear 51 hingedly arranged on the partition plate 33, and a plate 52 integrally arranged on the gear 51; The two gears 51 mesh with each other, wherein: When the push block 67 pushes one of the plates 52 to rotate, one of the gears 51 can drive the other gear 51 to rotate, so that the other plate 52 rotates synchronously. Specifically, the push block 67 rotates with the ring 64 to push the plate 52 that is partially inserted into the gap between the first connecting tube 31 and the second connecting tube 32. The plate 52 rotates in the state of the hinged partition plate 33, and the transmission effect between the two gears 51 drives the other plate 52 to rotate, thereby realizing the simple and quick angle adjustment of the two plates 52 and maintaining the adjusted angle.

[0024] Optionally, the upper section of the plate 52 is inserted into the gap between the first connecting tube 31 and the second connecting tube 32 and fits into the annular groove 65; The middle section of the plate 52 is in contact with the inner wall of the second connecting pipe 32, and the lower section of the plate 52 is in contact with the inner wall of the upper section of the discharge nozzle 4, wherein: When the plate 52 rotates, it can rub the annular groove 65, the second connecting pipe 32 and the discharge nozzle 4. Specifically, the shape setting of the plate 52 facilitates its force-bearing process. The friction state of the plate 52 when it moves also ensures the sealing during the consumables conveying and extrusion process, so that the mixing and control state of the two-color pigments is stable.

[0025] Optionally, the lower end surface of the plate 52 is V-shaped, and the sharp corner of the lower end surface of the plate 52 faces the discharge nozzle 4. Specifically, the bottom end of the plate 52 gradually becomes thinner from top to bottom, so that the two-color consumables have a buffer state of coagulation effect after being 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.

[0026] Optionally, the angle between the two plates 52 ranges from 120 degrees to 180 degrees. Specifically, the angle between the two plates 52 is set so that the extrusion amount of the consumables is not likely to exceed the area range of the two plates 52.

[0027] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of 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: include: A conveying portion (1), wherein two conveying portions (1) are arranged on the print head (2), and the two conveying portions (1) are used to convey granular consumables of different colors; a sleeve portion (3), the sleeve portion (3) being arranged on the print head (2), and the sleeve portion (3) being placed on the periphery of the lower end of the conveying portion (1), and the sleeve portion (3) being used for consumables to pass through; A discharge nozzle (4), the discharge nozzle (4) being connected to the lower end of the sleeve portion (3), and the discharge nozzle (4) being used for extruding consumables; an adjusting plate (5), wherein two adjusting plates (5) are hinged in the sleeve portion (3), and the two adjusting plates (5) are meshed with each other, and the two adjusting plates (5) are used to separate the sleeve portion (3) and the cross-sectional area of ​​the sleeve portion (3); A driving unit (6), the driving unit (6) being arranged on the print head (2) via a plurality of brackets, and the driving unit (6) being used to drive the two regulating plates (5) to rotate, wherein By driving the driving part (6), the two regulating plates (5) can rotate to divide the discharge nozzle (4) area in a fan shape, so that the two-color consumables can be mixed and extruded from the discharge nozzle (4) after the ratio is adjusted.

2. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 1, characterized in that: The conveying unit (1) comprises an air pump (11) arranged on the print head (2), two screw extruders (12) connected to 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 portion (3), wherein After the air pump (11) is driven, the two-color granular material can enter the two screw extruders (12) and be extruded in the form of filaments through the two discharge pipes (13).

3. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 2, characterized in that: The sleeve portion (3) comprises a first connecting tube (31) arranged on the print head (2) and sleeved on the outside of the two discharge tubes (13), a second connecting tube (32) connected to the lower end of the first connecting tube (31) at a parallel position via two arc-shaped frames (7), and a partition plate (33) arranged at the midline position of the first connecting tube (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).

4. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 3, characterized in that: The driving part (6) comprises a motor (61) fixedly mounted via one of the brackets, a connecting shaft (62) arranged on an output shaft of the motor (61) and rotatably connected to the other two brackets, and a worm (63) embedded outside the connecting shaft (62); By driving the motor (61), the connecting shaft (62) can drive the worm (63) to rotate.

5. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 4, characterized in that: The driving part (6) further comprises a circular ring (64) rotatably arranged outside the gap between the first connecting tube (31) and the second connecting tube (32), an annular groove (65) arranged inside the circular ring (64), a worm gear (66) fixedly arranged outside the circular ring (64), and two push blocks (67) arranged inside the annular groove (65); The worm wheel (66) meshes with the worm (63), wherein: The worm (63) can drive the worm wheel (66) to rotate, and the worm wheel (66) can drive the ring (64) to rotate, so that the push block (67) pushes the regulating plate (5) to rotate.

6. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 5, characterized in that: The regulating plate (5) comprises a gear (51) hingedly arranged on 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 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.

7. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 6, characterized in that: The upper section of the plate (52) is inserted into the gap between the first connecting tube (31) and the second connecting tube (32) and fits into the annular groove (65); The middle section of the plate (52) fits the inner wall of the second connecting pipe (32), and the lower section of the plate (52) fits the inner wall of the upper section of the discharge nozzle (4), wherein: When the plate (52) rotates, it is able to rub against the annular groove (65), the second connecting pipe (32) and the discharge nozzle (4).

8. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 7, characterized in that: The lower end surface of the plate (52) is V-shaped, and the sharp corner of the lower end surface of the plate (52) faces the discharge nozzle (4).

9. A color mixing 3D printer capable of controlling the mixing ratio as claimed in claim 8, characterized in that: The angle between the two plates (52) ranges from 120 degrees to 180 degrees.

10. A color mixing 3D printer capable of controlling the mixing ratio according to any one of claims 1 to 9, wherein the color mixing control method is: The first step is to place the input end of the air pump (11) into a storage cylinder of granular materials of different colors prepared in advance, and turn on the power of the air pump (11) to allow the granular materials of different colors to be input into two screw extruders (12); Step 2: Using two screw extruders (12), hot-melt extrude the granular material in a filamentous state toward the discharge pipe (13), the first connecting pipe (31) and the second connecting pipe (32); Step 3: Turn on the power of the motor (61), so that the connecting shaft (62) drives the worm (63) to rotate, so that the worm (63) drives the worm wheel (66) to rotate, and the ring (64) drives the push 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; Step 4: The two color materials pass through the two discharge channels, condense, and are extruded from the discharge nozzle (4).

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