CN114506080A

CN114506080A - Multi-color consumable production device and 3D printing wire production equipment

Info

Publication number: CN114506080A
Application number: CN202111496412.5A
Authority: CN
Inventors: 熊祖德
Original assignee: Huizhou Xiongtian High Tech Material Technology Co ltd
Current assignee: Huizhou Xiongtian High Tech Material Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-05-17
Anticipated expiration: 2041-12-08
Also published as: CN114506080B

Abstract

The invention discloses a multicolor consumable production device and 3D printing wire production equipment, wherein the multicolor consumable production device comprises a blanking device and a single-screw extruder, the blanking device comprises a material tray, a rotary table, a material leaking tray and a hopper which are sequentially arranged from top to bottom, the material tray comprises a plurality of color master hoppers and a main hopper which are circumferentially arranged at intervals, and the main hopper is arranged at the periphery of the color master hoppers. The screw extruder comprises a gun barrel, a screw and a heating module; the screw rod is rotatably installed in the gun barrel, threads are arranged on the outer peripheral side of the screw rod, and the screw rod rotates to enable slurry entering the gun barrel to be spirally extruded along a channel formed by the threads. The multicolor consumable production device provided by the invention does not need manual feeding at any time, so that the labor cost is greatly reduced, rainbow gradual change wires with more colors can be produced, and the different color intervals of the produced multicolor wires are shorter.

Description

Multi-color consumable production device and 3D printing wire production equipment

Technical Field

The invention relates to the technical field of 3D printing equipment, in particular to a multicolor consumable production device and 3D printing wire production equipment.

Background

The 3D printing technology is a novel comprehensive and frontier advanced manufacturing technology, integrates high and new technologies such as computers, precision instruments and new materials, and is a revolutionary leap of the manufacturing technology. The 3D printing technology is widely applied to the fields of model verification, jewelry casting, medical assistance, art design, education and the like. FDM technology is one of the most commonly used technologies in 3D printing, and has the advantages of relatively wide material selection and low cost compared to other 3D printing technologies.

However, in the FDM technique using thermoplastic as material, the printed multi-color object is a short sheet. In some model display and artistic originality, various color combinations can be printed simultaneously, so that some printed pieces are more visual and beautiful, and have verisimilitude and originality. But wire rod apparatus for producing among the prior art is when producing the consumptive material that has multiple different colours, and the wire rod distance of two kinds of adjacent colours is longer, and the different colour intervals of the FDM type 3D printing wire rod of producing are long, the less problem of colour kind in the unit length scope.

Disclosure of Invention

The invention mainly aims to provide a multi-color consumable production device, and aims to solve the problem that the produced FDM type 3D printing consumable in the prior art is less in color type within a unit length range.

In order to achieve the above object, the present invention provides a multi-color consumable production device, comprising:

the blanking device comprises a material tray, a rotary table, a material leaking tray and a hopper which are sequentially arranged from top to bottom, wherein the material tray comprises a plurality of color master hoppers and a plurality of main hoppers which are circumferentially arranged at intervals, the main hoppers are arranged on the peripheries of the color master hoppers, each color master hopper is provided with a color master feeding hole for adding color master, and each main hopper is provided with a main material feeding hole for adding main materials;

a first material leaking hole is formed in the bottom surface of each color hopper, and a second material leaking hole is formed in the bottom surface of each main hopper;

the rotary disc is rotatably arranged between the material disc and the material leaking disc, the rotary disc is attached to the lower surface of the material disc, the rotary disc is provided with first material measuring holes and second material measuring holes which are arranged at intervals, a plurality of first material leaking holes are arranged on a moving path of the first material measuring holes, and a plurality of second material leaking holes are arranged on a moving path of the second material measuring holes;

the material leakage disc is circumferentially provided with a plurality of first connecting holes and second connecting holes, the first connecting holes are arranged on a moving path of the first material measuring hole, and the second material leakage holes are arranged on a moving path of the second material measuring hole;

each first butt joint hole is used for guiding the color masterbatch in the first material measuring hole into the funnel, and each second butt joint hole is used for guiding the main material in the second material measuring hole into the funnel;

the single-screw extruder comprises a gun barrel, a screw and a heating module; the gun barrel is communicated with the discharge hole of the funnel so that the material of the funnel directly enters the gun barrel, and the heating module is arranged on the outer side of the gun barrel and used for heating the gun barrel;

the screw is rotatably installed in the gun barrel, threads are arranged on the outer peripheral side of the screw, and the screw rotates to enable slurry entering the gun barrel to be extruded out of one end, far away from the discharge port, of the gun barrel along a spiral channel formed by the threads.

Optionally, the depth of the screw teeth is 6-12mm, and the distance between two adjacent screw teeth is 2-8 mm.

Optionally, the length of the gun barrel is 600-800mm, and the inner diameter of the gun barrel is 20-40 mm.

Optionally, a protrusion is arranged on the screw rod, and the protrusion is arranged in a spiral channel formed by the screw teeth.

Optionally, the boss is disposed in a middle portion of the screw.

Optionally, the feeding device further comprises a driving piece, the driving piece is arranged at one end, close to the blanking device, of the single-screw extruder, and the driving piece is rotatably connected with the screw.

Optionally, the number of the color hoppers is greater than 3 and less than or equal to 15.

Optionally, each first connection hole and the second connection hole correspondingly arranged thereto form a group; the angle between the connecting line of the central point of each group of the first butt joint holes and the central point of the material leaking disc and the connecting line of the central point of the second butt joint holes and the central point of the material leaking disc is 3-15 degrees;

the first material leaking holes and the first butt joint holes are the same in number and are circumferentially staggered, and the second material leaking holes and the second butt joint holes are circumferentially staggered.

The invention also provides 3D printing wire production equipment which comprises the multicolor consumable production device.

The invention provides a multicolor consumable production device, which comprises a blanking device and a single-screw extruder, wherein the blanking device comprises a material tray, a rotary table, a material leaking tray and a hopper which are sequentially arranged from top to bottom; the bottom surface of each color master hopper is provided with a first material leaking hole, and the bottom surface of each main hopper is provided with a second material leaking hole; the rotary table is rotatably arranged between the material tray and the material leaking tray, the rotary table is attached to the lower surface of the material tray, the rotary table is provided with first material measuring holes and second material measuring holes which are arranged at intervals, a plurality of first material leaking holes are arranged on a moving path of the first material measuring holes, and a plurality of second material leaking holes are arranged on a moving path of the second material measuring holes; the material leakage disc is circumferentially provided with a plurality of first connecting holes and second connecting holes, the first connecting holes are arranged on the moving path of the first material measuring hole, and the second material leakage holes are arranged on the moving path of the second material measuring hole; each first butt joint hole is used for guiding the color masterbatch in the first material measuring hole into the funnel, each second butt joint hole is used for guiding the main material in the second material measuring hole into the funnel, and then the color masterbatch and the main material are sequentially guided into the blast pipe through the funnel. The single-screw extruder comprises a gun barrel, a screw and a heating module; the gun barrel is communicated with the feeding hole, the material of the blanking device directly enters the gun barrel, and the heating module is arranged on the outer side of the gun barrel and used for heating the gun barrel; the screw is rotatably installed in the gun barrel, threads are arranged on the outer peripheral side of the screw, and the screw rotates to enable slurry entering the gun barrel to be extruded out along a channel formed by the threads.

Each master hopper and the master hopper arranged on the periphery of the master hopper are defined into a group, the master hopper and each color master hopper which are arranged at intervals are internally provided with a storage space, and when blanking is needed, slurry with corresponding colors only needs to be added into each master hopper and each color master hopper through the feed inlet of each hopper. In the rotating process of the rotary table, the first material measuring holes are sequentially communicated with the first material leaking holes of the primary hoppers of each color, the second material measuring holes are sequentially communicated with the second material leaking holes of the primary hoppers, namely, the rotary table is sequentially communicated with the primary hoppers and the color master hoppers of each group respectively with the first material measuring holes and the second material measuring holes in the rotating process of the rotary table, and the color master hoppers of each color are sequentially discharged. And each main hopper and the color hopper are provided with storage spaces, so that a large amount of slurry can be stored at one time without manual feeding at any time, and the labor cost is greatly reduced. And the upper surface of the rotary table is attached to the lower surface of the material tray, the upper surface of the rotary table and the material leaking plate are ground flat when the rotary table rotates in the blanking process, the main material and the color master material entering the hopper from each group of the main hopper and the color master hopper can be kept consistent, and enter the gun barrel in sequence through the hopper, and the heating module heats the gun barrel to prevent slurry from solidifying at the screw rod to influence production. And the screw rod rotates, make the thick liquids in the funnel arrange according to the precedence that enters into the big gun intraductal in helical channel, and advance along with the rotation of screw rod, extrude, obtain polychrome consumptive material, and because the masterbatch of different colours is unanimous at every turn feeding volume, make the length of the adjacent two kinds of colours of polychrome consumptive material that obtains from the screw rod spiral extrusion more even, and through controlling feeding volume at every turn, can shorten the length of monochromatic wire rod, the polychrome wire rod that produces possesses more colors under equal length, make some prints more directly perceived and pleasing to the eye, and have verisimilitude and intention more.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is an exploded view of a screw and a barrel in an embodiment of the multi-color consumable production device of the present invention;

FIG. 2 is a schematic structural diagram of an embodiment of the apparatus for producing multi-color consumables of the present invention;

FIG. 3 is an exploded view of the blanking device in one embodiment of the apparatus for producing multi-color consumables of the present invention;

FIG. 4 is a schematic view of the tray of FIG. 3;

FIG. 5 is a schematic structural view of the turntable in FIG. 3;

FIG. 6 is a schematic structural view of the skip pan in FIG. 3;

FIG. 7a is a schematic diagram showing the sequential arrangement of the color concentrates and the main materials after the baiting device flows into the gun barrel from three adjacent mixing zones through the funnel in one embodiment of the multicolor consumable part production device of the present invention;

fig. 7b is a schematic diagram of the color concentrate of fig. 7a after mixing.

The reference numbers illustrate:

the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The problem that the produced FDM type 3D printing supplies are few in color types in the unit length range in the prior art is solved.

The invention provides a multicolor consumable production device.

In one embodiment, as shown in FIGS. 1-6, the multi-color consumable manufacturing apparatus includes a blanking device 100 and a single screw extruder 50. The blanking device 100 comprises a material tray 30, a rotating disc 20, a material leakage tray 40 and a funnel 10 which are sequentially arranged from top to bottom, wherein the material tray 30 comprises a plurality of color master hoppers 31 and main hoppers 32 which are circumferentially arranged at intervals, the main hoppers 32 are arranged on the periphery of the color master hoppers 31, each color master hopper 31 is provided with a color master feeding hole for adding color master, and each main hopper 32 is provided with a main material feeding hole for adding main materials; a first material leaking hole 311 is formed in the bottom surface of each color hopper 31, and a second material leaking hole 312 is formed in the bottom surface of each main hopper 32; the rotary table 20 is rotatably installed between the material tray and the material leaking tray, the rotary table 20 is attached to the lower surface of the material tray, the rotary table 20 is provided with a first material measuring hole 201 and a second material measuring hole 202 which are arranged at intervals, the plurality of first material leaking holes 311 are arranged on the moving path of the first material measuring hole 201, and the plurality of second material leaking holes 312 are arranged on the moving path of the second material measuring hole 202; the material leaking disc 40 is circumferentially provided with a plurality of first connection holes 41 and second connection holes 42, the plurality of first connection holes 41 are arranged on a moving path of the first material measuring hole 201, and the plurality of second material leaking holes 312 are arranged on a moving path of the second material measuring hole 202; each of the first aligning holes 41 is adapted to guide the color concentrate in the first metering hole 201 into the hopper 10, and each of the second aligning holes 42 is adapted to guide the main material in the second metering hole 202 into the hopper 10, and then sequentially guide the color concentrate and the main material into the barrel 51 through the hopper 10. The single screw extruder 50 comprises a gun barrel 51, a screw 52 and a heating module; the gun barrel 51 is communicated with the feeding hole, the material of the blanking device 100 directly enters the gun barrel 51, and the heating module is arranged on the outer side of the gun barrel 51 and used for heating the gun barrel 51 and preventing the main material and the master batch entering the gun barrel 51 from being solidified; the screw 52 is rotatably mounted in the barrel 51, the screw thread 521 is provided on the outer peripheral side of the screw 52, and the screw 52 is rotated to advance the slurry entering the barrel 51 along the screw thread 521 of the screw 52 and the passage formed by the inner peripheral wall of the barrel 51 to extrude the barrel 51.

Each master hopper and the master hopper 32 arranged at the periphery of the master hopper are defined as a group, the master hopper 32 and each master hopper 31 which are arranged at intervals are internally provided with a storage space, and when blanking is needed, slurry with corresponding colors only needs to be added into each master hopper 32 and each color master hopper 31 through the feed inlet of each hopper. In the rotation process of the turntable 20, the first material measuring hole 201 is sequentially communicated with the first material leaking hole 311 of each color master hopper 31, and the second material measuring hole 202 is sequentially communicated with the second material leaking hole 312 of each main hopper 32, that is, in the rotation process of the turntable 20, the main hopper 32 and the color master hopper 31 of each group are sequentially communicated with the first material measuring hole 201 and the second material measuring hole 202, respectively, so that the color master of each color is sequentially blanked. And every main hopper 32 and the female fill 31 of look all have storage space, can once only deposit a large amount of thick liquids, and do not need the manual reinforced constantly of manual work to greatly reduced the cost of labor. And the upper surface of the rotary table 20 is attached to the lower surface of the charging tray 30, in the rotating and discharging process of the rotary table 20, the upper surface of the rotary table 20 and the material leakage tray 40 are ground flat, the main material and the color master material entering the hopper 10 from the main hopper 32 and the color master hopper 31 of each group can be kept consistent and sequentially enter the gun barrel 51 through the hopper 10, and the heating module heats the gun barrel 51 to prevent the slurry from being solidified in the gun barrel 51 and influencing the slurry extrusion effect. And the screw rod 52 rotates, make the thick liquids (including all kinds of masterbatches and major ingredients) in the funnel 10 arrange according to the precedence order that enters into in the barrel 51 in spiral channel 522, and advance along with the rotation of screw rod 52, extrude, obtain polychrome consumptive material, and because the masterbatch of different colours is unanimous at every turn of feed volume, make the length of the adjacent two kinds of colours of polychrome consumptive material that obtain from screw rod 52 spiral extrusion more even, and through controlling the feed volume at every turn, can shorten the length of monochromatic wire rod, the polychrome wire rod that produces possesses more colors under equal length, make some prints more directly perceived and pleasing to the eye, and have verisimilitude and intention more.

It should be noted that the tray 30 may be square, cylinder or other shapes, which is not limited herein. In this embodiment, from being convenient for production consideration and being convenient for and carousel 20 cooperation consideration, charging tray 30 chooses for use to be cylindricly, and the periphery wall of charging tray 30 upwards extends, encloses with the upper surface of charging tray 30 and closes and form an holding tank, and in this holding tank was all arranged in to a plurality of main hoppers 32 and look mother's fill 31, the material that prevents in main hopper 32 and the look mother's fill 31 spills over.

It should be further noted that the end of the screw 52 remote from the barrel 51 is in driving connection with a motor, and the motor drives the screw to rotate.

In one embodiment, as shown in fig. 2, the tray 30 is a disc shape, a plurality of partition plates are protruded on the upper surface of the tray 30 to divide the tray 30 into a plurality of parts, wherein the tray 30, two adjacent partition plates and the inner wall surface of the tray 30 enclose to form a storage group 33, and an annular plate is protruded on the upper surface of the tray 30 and crosses each partition plate to divide each storage group 33 into a primary hopper 31 and a primary hopper 32 as storage spaces, so that slurries with different colors can be directly stored in each primary hopper 31 and each primary hopper 32 without mutual interference. The upper end of each color hopper 31 is a color concentrate feed port, and the upper end of each main hopper 32 is a main material feed port. The storage space of each color hopper 31 and the main hopper 32 is set according to the requirement, so that slurry is stored in each color hopper 31 and the main hopper 32, the blanking device 100 can continuously produce for several hours or several days in the blanking process without manual feeding, when the color and main materials stored in the color hoppers 31 and the main hopper 32 are nearly used up, the main material can be fed from the main material feed inlet of each main hopper 32 manually or by a machine, and the color can be fed from the color feed inlet of each color hopper 31. Therefore, manual quantitative blanking is not needed frequently, and labor cost is greatly reduced.

It can be understood that, from the view of facilitating feeding, the storage space of each main hopper 32 is all the same, and when the storage space of each color masterbatch hopper 31 is all the same, because the size of feed opening is the same to thick liquids in a plurality of hoppers can be consumed in step, and it is more convenient to feed.

In one embodiment, as shown in FIG. 1, the depth of the threads 521 is 6-12mm, and the distance between two adjacent threads 521 is 2-8 mm.

It can be understood that, because the heating module is installed outside the barrel, when the screw 52 rotates to drive the paste to advance along the spiral channel 522, the deeper the screw thread 521 is, the poorer the heating effect of the heating module on the paste in the spiral channel 522 is, the lower the heating temperature of the color masterbatch arranged at the bottom of the screw thread 521 is, so that the color masterbatch in the spiral channel 522 is heated unevenly, and further, the unsmooth or blocked discharge of the head 511 of the extruder may be caused. Therefore, in the present embodiment, the depth of the thread 521 is preferably 6 to 12mm, and may be 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, or any value therebetween. Repeated experiments of the inventor prove that the color masterbatch in the spiral channel 522 has the best heating effect when the depth of the screw 52 is within 6-12 mm. In the process of extruding the color masterbatch by the rotation of the screw 52, the color masterbatch in the spiral channel 522 can be fully heated by the heating module and is in a molten state, so that the color masterbatch is extruded more smoothly, and the single-screw extruder 50 cannot be blocked.

It will be further appreciated that the greater the spacing between adjacent threads 521, the wider the width of the channel of the screw 52 and the greater the volume of color concentrate that can be accommodated by a unit length of the screw 52. In the embodiment, in order to make the manufactured wire rod possess more different colors in a unit length, the volume of the color master batch of each color can be determined by controlling the sizes of the first metering hole 201 and the second metering hole 202, for example, when the volume of the first metering hole 201 is 10ml, and the volume of the second metering hole 202 is 10ml, the volume of the slurry of the same color entering the barrel at a time is 20ml, when the distance between two adjacent screw teeth 521 is too large, the color master batches of two adjacent color differences are easy to interfere with each other in the mixing process, which affects the effect of the manufactured wire rod, and when the distance between two adjacent screw teeth 521 is too small, the length of the single color slurry in the passage of the screw rod 52 is longer, and the color possessed by the manufactured wire rod in the unit length is less. Therefore, in this embodiment, in order to make the prepared wire rod possess more different colors in a unit length, and at the same time, two adjacent color difference color concentrates do not interfere with each other to generate a mixed material, it is preferable to set the distance between two adjacent threads 521 to be 2-8mm, that is, the distance between two adjacent threads 521 may be 2mm, 3mm, 4mm, 6mm, 8mm and any value therebetween, which is not limited herein.

In one embodiment, the length of the barrel 51 is 600mm and 800mm, and the inner diameter of the barrel 51 is 20-40 mm.

It should be noted that the slurry entering the single-screw extruder 52 from the discharging device 100 is driven by the rotation of the screw 52 and extruded from the head 511 of the barrel. The color master batch and the main materials entering the gun barrel from the blanking device 100 are sequentially arranged main materials, color master batches, main materials, color master batches and the like, in the process of advancing along the spiral channel 522 under the rotation of the screw rod 52, the color master batches can be subjected to color mixing with the main materials at two ends of the color master batches, the main materials are white slurry, the color master batches are slurries of other colors, and the color master batches and the main materials are mutually diffused at the self-connection part in the color mixing process to mix materials. For example, red color masterbatch 1 is filled in the color masterbatch bin of one of the stock groups 33, white color masterbatch 4 is filled in the main hopper 32, blue color masterbatch 2 and purple color masterbatch 3 are respectively filled in each color masterbatch bin of two adjacent stock groups 33, the distribution of the color masterbatch and the white color masterbatch which flow into the barrel from the outlet of the hopper 10 in the spiral passage 522 of the 3 stock groups 33 is shown in fig. 5a, the distribution of the color masterbatch and the white color masterbatch is sequentially shown in fig. 5a, the color masterbatch is white color masterbatch 4, blue color masterbatch 2, white color masterbatch 4, red color masterbatch 1, white color masterbatch 4 and purple color masterbatch 3, in the gradual change process, the color masterbatch of two adjacent colors is uniformly diffused from two ends, the color of the color masterbatch which is gradually changed sequentially is changed into the color masterbatch shown in fig. 5b, the formed wire rod slurry is sequentially shown in fig. blue color masterbatch 2, red color masterbatch 1 and purple color masterbatch 3, and is extruded out by the head 511 under the driving of the screw 52, so that the wire slurry extruded from the head 511 is a color master batch with various color differences which do not mix with each other. When the length of the gun barrel 51 is too long or the diameter of the gun barrel is too large, the path between the feed inlet of the gun barrel and the nose 511 of the screw 522 on the screw 52 is longer, that is, the time for the master batches of all colors and the main materials to stay in the gun barrel is longer, the color mixing of the master batches and the adjacent main materials can continue to be mixed with the color master batch of another color difference adjacent to the master batches, so that the color mixing of the two adjacent color master batches with different color differences is serious, and the quality of the produced wire rod is influenced. Therefore, through repeated experiments of the inventor, when the length of the barrel 51 is 600-800mm, such as 600mm, 700mm, 750mm, 800mm and any value therebetween, and the inner diameter of the barrel 51 is 20-40mm, such as 20mm, 25mm, 30mm, 35mm, 40mm and any value therebetween, the problem that color masterbatch entering the barrel from the blanking device 100 has serious cross color in the extrusion process of the screw 52 can be avoided, so that the quality of the produced 3D printing wire rod is better, and the molding of the color masterbatch with adjacent two color differences is better.

In one embodiment, the screw 52 is provided with a protrusion 523, and the protrusion 523 is disposed in the spiral channel 522 formed by the thread 521.

Alternatively, the protrusion 523 may be a protrusion, a bump, or a spiral shape, which is not limited herein. When the screw 52 rotates, the slurry entering the single-screw 52 extruder from the discharging device 100 flows forward in the spiral channel 522 under the rotation of the screw 52, the moving speed is high, the whole spiral channel 522 may not be filled, the slurry is extruded from the nose 511 of the barrel, the protrusion 523 can play a certain role in blocking the slurry flowing through the protrusion 523, so as to slow down the flow rate of the slurry in the screw 52, and further promote the color mixing of the color master batch and the main materials adjacent to the color master batch. For ease of manufacture, the boss 523 may be integrally formed with the screw 52.

In one embodiment, as shown in fig. 1, the protrusion 523 is disposed at a middle portion of the screw 52.

Optionally, the screw 52 is equally divided into three equal parts from the feed inlet to the extrusion outlet, which are respectively a front end part, a middle part and a rear end part, and the protrusion 523 may be a front end part protruding on the screw 52 or a middle part protruding on the screw 52, and repeated experiments by the inventor prove that the discharging effect is better when the protrusion 523 may be a middle part protruding on the screw 52 and close to the front end part of the screw 52.

It can be understood that the slurry entering the barrel moves along the track of the spiral channel 522 under the driving of the screw 52, the flow rate of the slurry is gradually reduced from the slurry inlet to the convex portion 523, and the flow rate of the slurry is gradually increased after flowing through the convex portion 523. When the convex portion 523 is arranged in the middle of the screw 52, when the slurry entering the barrel of the discharging device 100 moves from the inlet to the convex portion 523, the flow rate is reduced, and the discharging speed of the discharging device 100 is unchanged, so that the slurry is stacked and compressed at the convex portion 523, the length of the spiral channel 522 occupied by the color master batch of the same color is shorter, and the same color interval of the produced wire rod is shorter. And the convex part 523 is convexly arranged at the middle part of the screw rod 52, so that a buffer distance is provided for the slurry in the spiral channel 522, and the slurry in the spiral channel 522 can not be blocked by the convex part 523 to influence the discharging effect. And the flow velocity of the slurry from the convex part 523 to the nose 511 of the gun barrel is gradually increased, so that the extrusion speed and the extrusion effect are not influenced.

It should be further noted that the main hoppers 32 are used to store main materials (white slurry), each color hopper 31 is set according to the number of color types of the 3D wire required to be obtained by the user, and each color hopper 31 may be used to store color slurries of different colors, such as red, orange, red, green, cyan, violet, yellow, blue, gray, white, and the like.

For example, during the rotation of the rotary disc 20, while the first material metering hole 201 is communicated with the first material leaking hole 311 of the color hopper 31 filled with the red color masterbatch slurry, the second material metering hole 202 is communicated with the first material leaking hole 311 of the main hopper 32 disposed at the periphery of the color hopper 31, at this time, the red color masterbatch slurry disposed in the color hopper 31 sequentially flows into the hopper 10 through the first material leaking hole 311 and the first material metering hole 201 and then enters the screw extruder 50 from the material outlet 11, and the main material sequentially flows into the hopper 10 through the second material leaking hole 312 and the second material metering hole 202 and then flows out from the material outlet 11. As the turntable 20 rotates, the first metering hole 201 is separated from the first bleed hole 311 in the stock group 33, and is communicated with a first leakage hole 311 and a first measuring hole 201 in a color hopper 31 filled with yellow color master slurry after the red color master slurry is filled, the yellow color master slurry flows into a blanking tray 30 through the first measuring hole 201, a second leakage hole 312 and a second measuring hole 202 of a main hopper 32 arranged at the periphery of the color hopper 31 filled with the yellow color master slurry, the main material sequentially flows into a hopper 10 through the second leakage hole 312 and the second measuring hole 202 and then flows out of a discharge hole 11, secondary blanking is realized, and the like, and the sequential blanking of each storage group 33 is realized along with the rotation of the turntable 20, therefore, the color master batches of various colors are sequentially added into the screw extruder 50 without manual operation, so that the production cost is saved, and the production efficiency is greatly improved.

In an embodiment, the number of optional color hoppers 31 is 3-15, such as 3, 4, 5, 6, 7, 8, 10, 12, 15, and any number therebetween. It can be understood that the larger the number of the color hoppers 31, the more the color types of the color concentrate slurry can be filled, and the more the color types of the strands produced after entering the extruder of the screw 52 through the blanking device 100. For example, when the user needs 10 colors of 3D wires, the upper surface of the tray 30 has 10 storage groups 33 circumferentially spaced apart from each other, and the 10 storage groups 33 are separated from each other, and the stored slurry therein does not interfere with each other. Further, each stock group 33 is divided into the color hopper 31 and the main hopper 32 by an outer ring plate. During production, color master batches with different colors are directly placed in the color master hopper 31 of each storage group 33, main materials are stored in the main hopper 32 of each storage group 33, and in the rotating process of the rotary table 20, the first material measuring hole 201 and the second material measuring hole 202 formed in the rotary table 20 are sequentially communicated with the first material leaking hole 311 and the second material leaking hole 312 of each storage group 33 and are used for blanking, so that the color master batches with different colors in 10 are blanked sequentially, and the blanking process is circulated. When the slurry in the rear color master hopper 31 of each main hopper 32 is about to run down or reaches the set lowest liquid level, the slurry in the rear color master hopper 31 of each main hopper 32 is manually fully distributed, so that manual feeding is not needed, and the labor cost is reduced. And the upper surface of the turntable 20 is attached to the lower surface of the material tray 30, so that when the first material measuring hole 201 leaves one of the first material leaking holes 311 in the rotating process of the turntable 20, the slurry at the inlet end of the first material measuring hole 201 is screeded by the lower surface of the material tray 30, the single discharging amount of the 10 material storage groups 33 can be kept consistent, and the same-color intervals of the produced wires are more uniform.

In one embodiment, for convenience of description, each first material leaking hole 311 and the corresponding second material leaking hole 312 are grouped; the center point of the tray 30 is located on the same straight line with the center point of the first material leaking hole 311 and the center point of the second material leaking hole 312 of each group.

It can be understood that, during the blanking process by the rotation of the rotating disc 20, since the rotation speed of the rotating disc 20 is constant, the time for which the first material metering hole 201 of the rotating disc 20 is communicated with each first material leaking hole 311 is constant, and the time for which the second material metering hole 202 of the rotating disc 20 is communicated with each second material leaking hole is constant, that is, the content of slurry leaking from each first material leaking hole 311 and each second material leaking hole 312 per unit time is constant. Therefore, in order to control the single blanking amount of each tray 30, the blanking amount of each tray 30 in one rotation period can be adjusted according to the aperture size of the second blanking hole 312 of the first blanking hole 311, and the shape and the size of the first blanking hole 201 and the first blanking hole 311 are set to be consistent, and the shape and the size of the second blanking hole 202 and the second blanking hole 312 are set to be consistent, so that the first blanking hole 201 and the plurality of first blanking holes 311 are aligned in sequence more accurately when the turntable 20 rotates and in the process, the alignment between the second blanking hole 202 and the plurality of second blanking holes 312 is more accurate, the blanking of the whole blanking device 100 is more flow-efficient, and the blanking holes are not blocked. The material tray 30 is a circular disc, and when the center point of the material tray 30, the center point of the first material leaking hole 311 and the center point of the second material leaking hole 312 of each group are located on the same straight line, the production and the processing of the material tray 30 are more convenient.

In one embodiment, the first measuring hole 201 is a circular hole, and the second measuring hole 202 is a square hole. Compared with other types of through holes, the first measuring hole 201 is configured as a circular hole, for example, when the turntable 20 drives the first measuring hole 201 to rotate to a position right below one of the first leaking holes 311, the circular first measuring hole 201 is filled with slurry flowing out from the first leaking hole 311, and the volume of the slurry in the first measuring hole 201 is more convenient to calculate, so that the single-time discharging amount is more convenient to control. Correspondingly, the second measuring hole 202 is also formed as a square through hole to facilitate calculation of the volume of the main material when the second measuring hole 202 is filled with the main material, and of course, the second measuring hole 202 may also be a circular through hole or a through hole with other shapes, which is not limited herein.

In an embodiment, the turntable 20 further includes a driving motor, the driving motor is installed at one side of the blanking device 100, and the driving motor is in driving connection with the turntable 20.

Alternatively, the rotating disc 20 may be a rotating disc, a square disc or other shape of the rotating disc 20, which is not limited herein. In this embodiment, the turntable 20 is a circular disk, and the driving assembly includes a motor, and is drivingly connected to the turntable 20, and is configured to drive the turntable 20 to rotate along a central line of the turntable 20, so as to implement the sequential blanking of the blanking device 100.

In an embodiment, as shown in fig. 1, 2, 3 and 4, the skip tray 40 is disposed below the turntable 20 and attached to the lower surface of the turntable 20, the skip tray 40 is circumferentially provided with a plurality of first connection holes 41 and second connection holes 42, the plurality of first connection holes 41 are disposed on a moving path of the first material measuring hole 201, and the plurality of second material leaking holes 312 are disposed on a moving path of the second material measuring hole 202.

Each of the first aligning holes 41 is used for guiding the color concentrate in the first material metering hole 201 into the funnel 10, and each of the second aligning holes 42 is used for guiding the main material in the second material metering hole 202 into the funnel 10.

It should be noted that, a circumferential force is generated during the rotation of the turntable 20, when the color masterbatch slurry of the color masterbatch hopper 31 flows into the first connection hole 41 from the first material metering hole 201 formed in the turntable 20, because the vertical distance between the turntable 20 and the discharge hole 11 of the funnel 10 is too large, the color masterbatch slurry flowing out from the lower end of the first material metering hole 201 is thrown away under the action of the circumferential force, so that the color masterbatch slurry of other colors flowing down from the adjacent storage group 33 is mixed, and the manufacturing effect of the 3D wire rod is affected. Therefore, in this embodiment, a skip tray 40 is disposed below the rotary plate 20 for vertically guiding the color concentrate slurry flowing through the first measuring hole 201 and the main material flowing through the second measuring hole 202 into the hopper 10. Alternatively, the turntable 20 and the skip pan 40 are arranged as close as possible, the upper surface of the skip pan 40 can be attached to the lower surface of the turntable 20, namely, the turntable 20 is limited in the space between the material tray 30 and the material leakage tray 40 in the rotating process, so that in the rotating process of the turntable 20, when the first material-measuring hole 201 is aligned and communicated with one of the first material-leaking holes 311, the color masterbatch slurry flowing out of the color masterbatch hopper 31 corresponding to the first material-leaking hole 311 sequentially flows through the first material-leaking hole 311, the first material-measuring hole 201 and the first connection hole 41 to flow out to the hopper 10, the rotation of the rotary plate 20 will not affect the color masterbatch slurry flowing out of the first connection hole 41, so that the color masterbatch slurry flowing out of the first butt joint hole 41 enters the funnel 10 under the action of gravity, and the color masterbatch slurry flowing into the funnel 10 and the adjacent color masterbatch slurry are prevented from being mixed, so that the production of the 3D printing wire rod is influenced.

In one embodiment, each first connection hole 41 and the corresponding second connection hole 42 are a set; the connecting line of the central point of each group of the first connecting holes 41 and the central point of the leakage tray 40 is arranged at an angle with the connecting line of the central point of the second connecting holes 42 and the central point of the leakage tray 40.

It should be noted that the color of the color master batch slurry cannot be changed in the mixing process of the color master batch slurry and the component materials of various colors. Each set of first docking holes 41 and the position on the fritting disc 40 is defined as a compounding area 43. A connecting line of the center point of each group of the first connecting hole 41 and the center point of the second connecting hole 42 is arranged at an angle with a connecting line of the center point of the second connecting hole 42 and the center point of the material leakage disc 40, that is, the first connecting hole 41 and the second connecting hole 42 are eccentrically arranged on the material leakage disc 40, so that when the first material measuring hole 201 and the second material measuring hole 202 of the rotary disc 20 are placed in one of the material mixing zones 43 in the rotation process of the rotary disc 20, the first material measuring hole 201 is firstly communicated with the first connecting hole 41, and then the second material measuring hole 202 is communicated with the second connecting hole 42; alternatively, the second metering hole 202 of the rotary plate 20 is communicated before the second docking hole 42, and then the first metering hole 201 is communicated with the first docking hole 41. The color concentrates and the main materials which are discharged from each mixing area 43 are sequentially divided, and then the color concentrates, the main materials, the color concentrates and the like are sequentially arranged in the slurry which falls into the funnel 10 from each mixing area 43, and a section of main material is always separated between two adjacent color concentrates with different colors, so that color mixing between the color concentrates with different colors is prevented. And then the rotating disc 20 rotates to transfer the first material measuring hole 201 and the second material measuring hole 202 which are arranged on the rotating disc 20 to the next material mixing area 43, and in the process of communicating with the first connecting hole 41 and the second connecting hole 42 of the material mixing area 43, the slurry flowing down from the material mixing area 43 at least has unmixing between the part of color master batch which firstly falls and the main material which finally falls when the slurry flows into the screw 52 extruder from the discharge port 11, and also can obtain the slurry of the front-end main material, the middle mixed color material and the rear-end color master batch, namely, the unmixed main material is always arranged between the two adjacent color master batches, so that the problem of mutual interference of colors of the two adjacent wires with different color differences is avoided to a great extent when the wires are mixed, the color difference separation of the produced wires is more obvious, and the display effect is better.

For example, the color concentrate bin in one of the storage groups 33 contains red color concentrate slurry 1, the white color concentrate 4 in the main hopper 32, and the blue color concentrate 2 and the purple color concentrate 3 respectively contained in each color concentrate bin of two adjacent storage groups 33, the distribution of the color concentrates and the white color concentrate is as shown in fig. 7a, the color concentrates are sequentially white color concentrate 4, blue color concentrate 2, white color concentrate 4, red color concentrate 1, white color concentrate 4 and purple color concentrate 3, in the gradual change process, the color concentrates of two adjacent colors are uniformly diffused from two ends respectively, the color of the color concentrate slurry gradually changed in sequence is converted into the color of the color concentrate slurry as shown in fig. 7b, the formed wire rod slurry is sequentially blue color concentrate 2, red color concentrate 1 and purple color concentrate 3, so that the color concentrates of two adjacent different colors are mixed with the main material in the gradual change process, thereby the wire rod of two kinds of adjacent different colour differences of very big degree is when the compounding, the problem of colour mutual interference for when the same look interval of the wire rod of producing is shorter, colour mixture problem can not appear.

In one embodiment, the angle between the line connecting the center point of the first connecting hole 41 and the center point of the drain pan 40 and the line connecting the center point of the second connecting hole 42 and the center point of the drain pan 40 is 3-15 °, i.e., the eccentricity angle between the first connecting hole 41 and the second connecting hole 42 on the drain pan 40 is 3-15 °. The included angle therebetween may be 3 °, 5 °, 10 °, 12 °, 15 ° and any value therebetween, which is not limited herein. When the eccentric angle between the first butt joint hole 41 and the second butt joint hole 42 is within the range of 2-15 degrees, for example, 10 degrees, when the main material (white master batch) between the color masterbatches of two adjacent colors enters the screw 52 extruder at the blanking, the two ends of the color masterbatch of each color can be just mixed with the main material respectively, and the color mixing on the two adjacent color masterbatches can not occur, so that the mutual interference and the mutual color mixing of the two adjacent color masterbatches in the material mixing process can be avoided, the same color interval of the produced wire rod can be influenced, the same color interval of the produced 3D wire rod is shorter, and the color display effect is better.

In one embodiment, the first material leaking holes 311 and the first connecting holes 41 are the same in number and are circumferentially staggered; the second weep hole 312 and the second mating hole 42 are circumferentially offset.

Optionally, the first material leaking holes 311 correspond to the first connection holes 41 one by one, and the second material leaking holes 312 correspond to the second connection holes 42 one by one, the color masterbatch flowing down from each first material leaking hole 311 flows into the hopper 10 from the first connection hole 41 on the material leaking tray 40 opposite thereto after passing through the first material measuring hole 201, and the main material flowing down from each second material leaking hole 312 flows into the hopper 10 from the second connection hole 42 on the material leaking tray 40 opposite thereto after passing through the second material measuring hole 202. In this process, when the turntable 20 rotates to drive the first material measuring hole 201 to communicate with the first material leaking hole 311, at this time, the first connection hole 41 corresponding to the first material leaking hole 311 is separated from the first material leaking hole 311, the material in the color masterbatch hopper 31 flows into the first material measuring hole 201 through the first material leaking hole 311 for storage, along with the rotation of the turntable 20, the first connection hole 41 is gradually separated from the first material leaking hole 311, and the upper surface of the turntable 20 is leveled with the lower surface of the material tray 30, at this time, the amount of the color masterbatch in the first material measuring hole 201 is a certain amount, and along with the rotation of the turntable 20, the lower end of the first material measuring hole 201 is communicated with the first material leaking hole 311, so that the color masterbatch in the first material measuring hole 201 is transferred into the hopper 10 through the first material leaking hole 311, and the quantitative blanking is completed. The manner of the main material discharged from the second leakage hole 312 is the same as that of the color masterbatch, and therefore, the repeated description is omitted here, and the discharging in this manner can ensure that the content of the slurry entering the hopper 10 from each color masterbatch bucket 31 and each main hopper 32 is the same, that is, the slurry can be contained in the first measuring hole 201 and the second measuring hole 202. The volume of the main material and the color masterbatch of the blanking device 100 at each time are indirectly controlled by setting the volume of the first material measuring hole 201 and the second material measuring hole 202, so that the interval of the produced 3D wire rods is controlled, the color interval of the wire rods produced by a user is more in variety, and the interval of the same color can be shorter.

The invention further provides 3D printing wire production equipment which comprises the multi-color consumable production device, the specific structure of the multi-color consumable production device refers to any one of the embodiments, and the multi-color consumable production device adopts all the technical schemes of all the embodiments, so that all the beneficial effects brought by the technical schemes of the embodiments are at least achieved, and the details are not repeated.

In one embodiment, the multicolor consumable production device is in operation, taking 3D printing wires of different colors in production 10 as an example. At this time, the storage groups 33 are 10 groups, the color of the color concentrates in each storage group is different, when production is started, the rotary table 20 rotates, the first material measuring hole 201 and the second material measuring hole 202 are sequentially communicated with the color concentrate hopper 31 and the main hopper 32 of each storage group 33, the quantitative color concentrates and the quantitative main materials flow into the hopper 10 through the first connecting hole 41 and the second connecting hole 42 in the material mixing area 43 matched with the storage groups 33, the color concentrates and the main materials of the storage groups of 10 groups sequentially flow into the single-screw extruder 50 from the discharge hole 11 of the hopper 10, wherein a main material is mixed between every two adjacent color concentrates, and the blanking process is circulated along with the rotation of the rotary table 20. Under the rotation of the screw 52, the color masterbatch and the main material which directly flow into the gun barrel 51 from the discharge port 11 of the funnel 10 advance along the spiral channel 522 of the screw 52 to the nose 511 of the gun barrel 51, so as to avoid the problem of serious color cross-talk caused by the heating time process in the extrusion process of two adjacent color-difference color masterbatch, the length of the gun barrel 51 is shortened to 700mm, and the inner diameter is reduced to 30 mm; meanwhile, in order to avoid the problem of uneven heating caused by too deep screw threads 52, the depth of the screw threads 521 is set to be 8mm, the length of the screw rod 52 is 120mm, and the distance between two adjacent screw threads 521 is 4 mm; in addition, in order to make the mixed material more uniform, a protrusion is arranged in the middle of the screw 52 to hinder the discharging speed, and the flow rate of the various color master batches and the main material flowing through the protrusion 523 is reduced, so that the various color master batches are sequentially extruded from the single-screw extruder 50, and 3D printing wires with different colors in 10 are obtained. The multicolor consumable production device provided by the invention does not need manual blanking, has high production efficiency, and the produced multicolor wire rod can have more colors under the same length, so that some printed parts are more visual and beautiful, and have more verisimilitude and originality.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A multicolor consumable production device, comprising:

the screw rod is rotatably installed in the gun barrel, threads are arranged on the peripheral side of the screw rod, and the screw rod rotates to enable slurry entering the gun barrel to be extruded out of one end, far away from the discharge hole, of the gun barrel along a spiral channel formed by the threads.

2. The multi-color consumable production device according to claim 1, wherein the depth of the screw threads is 6-12mm and the distance between two adjacent screw threads is 2-8 mm.

3. The multi-color consumable production device of claim 2, wherein the length of the barrel is 600-800mm, and the inner diameter of the barrel is 20-40 mm.

4. The multi-color consumable production device according to claim 1, wherein the screw is provided with a protrusion, and the protrusion is placed in a spiral channel formed by the screw teeth.

5. The multi-color consumable production device according to claim 4, wherein the projection is provided at a middle portion of the screw.

6. The multi-color consumable production device according to claim 1, further comprising a driving member disposed at an end of the single screw extruder adjacent to the blanking device, the driving member being rotatably coupled to the screw.

7. The multi-color consumable production device of claim 1, wherein the number of color hoppers is greater than 3 and less than or equal to 15.

8. The multi-color consumable production device of claim 7, wherein each of the first docking holes is associated with a corresponding second docking hole; the angle between the connecting line of the central point of each group of the first butt joint holes and the central point of the material leaking disc and the connecting line of the central point of the second butt joint holes and the central point of the material leaking disc is 3-15 degrees;

9. 3D printing wire production equipment, characterized by comprising a multicolor consumable production device according to any one of claims 1 to 8.