CN-121798900-B - Short-range extrusion device for realizing multicolor color mixing and working method

CN121798900BCN 121798900 BCN121798900 BCN 121798900BCN-121798900-B

Abstract

The invention discloses a short-range extrusion device for realizing multicolor color mixing and a working method thereof, which solve the problems of low printing precision of a long-range feeding printing device and low moving precision of the short-range feeding printing device in the prior art, and have the beneficial effect of improving the printing precision, and the specific scheme is as follows: the utility model provides a realize short-range extrusion device of polychrome colour mixture, including the drive module that connects gradually, the pay-off is extruded the module, colour mixture proportion control module and mix and extrude the module, power pack sets up a plurality of output shafts, each output shaft respectively with the pay-off part cooperation that corresponds, the pay-off is extruded the module and is included the pay-off fixing base, the pay-off fixing base supports tensioning mechanism, clamping force between pay-off part and the tensioning mechanism is adjustable, set up the baffle of the coaxial setting of many places between colour mixture proportion control module and the mix extrusion module, the baffle setting can with the shielding groove of melting chamber intercommunication, the baffle rotatable makes the shielding groove shelter from the part in melting chamber and realizes flow regulation.

Inventors

JIANG ZHAOLIANG
WANG SILIANG
Dai Huawen
GONG LICHAO
MENG XUN
ZHANG HENGRUI

Assignees

山东大学

Dates

Publication Date: 20260512
Application Date: 20260311

Claims (6)

1. The short-range extrusion device for realizing multicolor color mixing is characterized by comprising a driving module, a feeding extrusion module, a color mixing proportion control module and a mixing extrusion module which are sequentially connected, wherein a plurality of feeding holes respectively penetrate through the driving module, the feeding extrusion module and the color mixing proportion control module, the driving module is provided with a power assembly, the power assembly is provided with a plurality of output shafts, each output shaft is respectively matched with a corresponding feeding part, the feeding extrusion module comprises a feeding fixing seat, the feeding fixing seat supports a tensioning mechanism, the clamping force between the feeding part and the tensioning mechanism is adjustable to open or close the feeding holes, the color mixing proportion control module is provided with a melting cavity, a plurality of baffle plates which are coaxially arranged are arranged between the color mixing proportion control module and the mixing extrusion module, the baffle plates are provided with shielding grooves which can be communicated with the melting cavity, the baffle plates can rotate to enable the shielding grooves to shield the part of the melting cavity to realize flow adjustment, the melting cavity can be communicated with the mixing cavity in the mixing cavity, and the mixing cavity is provided with a nozzle for extrusion of consumable materials after mixing; The driving module comprises a bearing seat, the bearing seat can be fixed, the bearing seat can rotatably support the power assembly, the power assembly is a planetary gear train, a sun gear in the planetary gear train is a driving wheel, one end of a planetary wheel shaft in the planetary gear train is rotatably arranged on the feeding fixing seat, the number of the planetary wheel shafts in the planetary gear train is consistent with that of the feeding holes, a worm is sleeved on the planetary wheel shaft, the worm is matched with the feeding part, and the feeding part is a feeding worm wheel; the tensioning mechanism comprises a pulley seat, the pulley seat is arranged on the feeding fixed seat, one side of the pulley seat is provided with an eccentric wheel, the eccentric wheel is connected with a first power source, the pulley seat is provided with a pulley through a pulley bracket and a pulley shaft, a spring is arranged between the pulley shaft and the pulley seat, and the circumferential surface of the eccentric wheel can be in contact with the pulley bracket; The color mixing proportion control module comprises a main cavity body, wherein the main cavity body is connected with the feeding fixing seat, a partition plate is arranged inside the main cavity body along a radial plane so as to be divided into a heat insulation area and a heating and color mixing proportion control area, both ends of the main cavity body are opened, heat insulation blocks are arranged in the heat insulation area, heating blocks are arranged in the heating and color mixing proportion control area, baffles which are axially arranged are arranged below the heating blocks, and the melting cavity is arranged in the heating blocks; the baffle includes the intermediate lamella, and the upside of intermediate lamella sets up the baffle limiting plate, and the downside of intermediate lamella sets up the lower cover plate, and the week side of baffle limiting plate sets up the spacing groove, and the week side of intermediate lamella sets up the tooth section, and tooth section wears out from the spacing groove, tooth section and gear cooperation, the gear is fixed in the output of second power supply, and the second power supply is fixed in the lateral part of main cavity.
2. The short-range extrusion device for achieving multicolor color mixing according to claim 1, wherein the driving module further comprises a cover plate, the power source of the sun gear is located at the cover plate and protrudes out of the cover plate, the cover plate is connected with the bearing seat, a plurality of pneumatic joints are arranged at the cover plate and communicated with the feeding holes, the cover plate can be fixed, a gear ring bearing is arranged at the bearing seat, and the planetary gear train is arranged in the gear ring bearing.
3. The short-range extrusion device for realizing multicolor color mixing according to claim 1, wherein the pulley seat comprises two L-shaped seats, one side of each L-shaped seat is provided with a supporting plate, the supporting plates support the eccentric wheel, the eccentric wheel is fixed at the output end of the first power source, the inner side walls of the L-shaped seats are respectively provided with an arc-shaped groove, and the eccentric wheel is contacted with the arc-shaped grooves; The pulley support is a U-shaped structural member, spring positioning grooves are respectively formed in the two shaft ends of the pulley shaft, the springs are fixed through the spring positioning grooves and the positioning grooves in the pulley seat, and the springs are arranged far away from the eccentric wheel.
4. The short-range extrusion device for achieving multicolor color mixing according to claim 1, wherein a support column is arranged between the driving module and the feeding fixing seat, the planetary wheel shaft penetrates through the center of the support column, a plurality of notches are formed in one side, facing the feeding fixing seat, of the support column, and the tensioning mechanism is accommodated through the notches.
5. The short-range extrusion device for realizing multicolor color mixing according to claim 1, wherein a baffle rotating shaft is arranged at the center of the color mixing proportion control module, the baffle rotating shaft penetrates through the baffle limiting plate and the lower cover plate, a plurality of holes are respectively formed in the side sides of the baffle limiting plate and the lower cover plate, strip holes are formed in the middle plate corresponding to the holes, a shielding semicircular plate is arranged in one strip hole to form a shielding groove, the size of the shielding groove is smaller than that of the strip hole, the diameters of the shielding semicircular plate arranged in the shielding groove and the holes of the baffle limiting plate and the lower cover plate are the same, a plane bearing is arranged in the center hole of the middle plate, and the plane bearing is sleeved at the baffle rotating shaft.
6. A method of operating a short-range extrusion apparatus for achieving multi-color mixing according to any one of claims 1-5, comprising: The consumable enters the feeding holes of the driving module, the feeding extrusion module and the color mixing proportion control module, and the clamping force between the feeding component and the tensioning mechanism is adjustable to open or block the feeding holes so as to feed through all or part of the feeding holes; Consumable comes to the melting cavity through the feeding hole, and enters the mixing cavity through the shielding groove of the baffle, the consumable is extruded through the nozzle after being mixed in the mixing cavity, and the baffle can rotate to enable the shielding groove to shield the part of the melting cavity to realize flow regulation.

Description

Short-range extrusion device for realizing multicolor color mixing and working method Technical Field The invention relates to the technical field of 3D printing, in particular to a short-range extrusion device for realizing multicolor color mixing and a working method. Background The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. 3D printing technology, also known as additive manufacturing, is a manufacturing process that creates objects by layering materials layer by layer. With advances in technology, 3D printing has evolved from original prototype fabrication to functional parts capable of producing a variety of complex structures today, even for biomedical, architectural, food, and other applications. FDM (fused deposition modeling) is the most common desktop-level 3D printing technique at present, which builds objects by printing heated plastic filaments layer by layer. At present, consumer FDM technology is mainly focused on the field of monochromatic printing, and although the printing speed of the mode is high, the mode has only one color, and can not realize direct forming of multiple colors, so that the richness and playability of 3D printing are reduced. Multicolor printing, while it can achieve color matching between colors, is limited to a few fixed wire colors and does not produce colors other than wire colors. With the popularization and development of FDM3D printing technology, market demands increase, and the popularization of customized and personalized products makes FDM3D printing a more efficient and flexible technology. The color mixing printing can not only use the colors of the wires, but also can produce rich colors through the mixing among the wires, so that the market demands of artistic creation and personalized customization are met, but the multi-color mixing printing is mainly based on remote extrusion, the remote extrusion feeding distance is far, and the consumable has certain elasticity, so that the extrusion precision is poor. The short-range extrusion is realized by arranging a plurality of corresponding driving units at the near end, namely, each extrusion opening corresponds to one driving unit, and the proportion is controlled by means of different rotating speeds of the driving motor, so that the printing head has large weight and large movement inertia, and further, the movement precision is poor. Disclosure of Invention Aiming at the defects existing in the prior art, the invention aims to provide a short-range extrusion device for realizing multicolor color mixing, which improves the printing precision and the integral movement precision. In order to achieve the above object, the present invention is realized by the following technical scheme: The utility model provides a realize short-range extrusion device of polychrome colour mixture, including the drive module that connects gradually, the pay-off is extruded the module, colour mixture proportion control module and mixing extrusion module, a plurality of pay-off holes run through the drive module respectively, the pay-off is extruded the module, colour mixture proportion control module sets up, the drive module sets up power component, power component sets up a plurality of output shafts, each output shaft cooperates with the pay-off part that corresponds respectively, the pay-off is extruded the module and is included the pay-off fixing base, pay-off fixing base supports straining device, clamping force between pay-off part and the straining device is adjustable in order to open or close the pay-off hole, colour mixture proportion control module sets up the melting chamber, set up the baffle of the coaxial setting of many places between colour mixture proportion control module and the mixing extrusion module, the baffle setting can be with the shielding groove of melting chamber intercommunication, the baffle rotatable makes shielding groove shelter from the part of melting chamber realize flow control, the melting chamber can be with the mixing chamber intercommunication in the mixing chamber, the mixing chamber is equipped with the extrusion that the nozzle is used for the consumable after mixing. The short-range extrusion device for realizing multicolor color mixing is characterized in that the feeding component and the baffle are arranged at intervals; The driving module comprises a bearing seat, the bearing seat can be fixed, the power assembly can be rotatably supported by the bearing seat, the power assembly is a planetary gear train, a sun wheel in the planetary gear train is a driving wheel, one end of a planetary wheel shaft in the planetary gear train is rotatably arranged on the feeding fixing seat, the number of the planetary wheel shafts in the planetary gear train is consistent with that of the feeding holes, a worm is sleeved on a planetary wheel shaft collar, the worm is matched with the feeding p