CN115230154A

CN115230154A - High-precision ink direct-writing 3D printing auxiliary device capable of eliminating differentiation of full-irradiation area

Info

Publication number: CN115230154A
Application number: CN202210740262.6A
Authority: CN
Inventors: 朱凯; 李�杰; 任艳艳
Original assignee: Henan Polytechnic Institute
Current assignee: Henan Polytechnic Institute
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-10-25

Abstract

The utility model provides a high accuracy ink direct writing 3D prints auxiliary device is eliminated in regional differentiation of full irradiation, including triaxial positioning system, an ink section of thick bamboo, print shower nozzle and equal light cone, install an ink section of thick bamboo and print the shower nozzle on triaxial positioning system's the support plate, print the equal light cone of suit on the shower nozzle, the inside toper cavity that is provided with of equal light cone, the cavity both sides are provided with reflection of light coating, the lower extreme of equal light cone is provided with the annular and leads to the unthreaded hole, the annular leads to unthreaded hole intercommunication toper cavity, the annular leads to the unthreaded hole orientation simultaneously and prints the spout of shower nozzle, still install the light source on the equal light cone and connect, light source connects intercommunication toper cavity. Compared with the existing unilateral curing light source 3D printer which is easily affected by path change, the curing precision of the part is affected, the full irradiation is realized by arranging the light-equalizing cone, the difference of each path of the existing unilateral light printing is eliminated, the part forming precision is improved, the light-solid delay caused by unilateral light beams under the condition of different angles is avoided, and the precision of the part printed by the light-solid direct writing 3D printer is improved.

Description

High-precision ink direct-writing 3D printing auxiliary device capable of eliminating differentiation of full-irradiation area

Technical Field

The invention belongs to the technical field of 3D printers, and particularly relates to a direct-writing 3D printing auxiliary device capable of eliminating high-precision ink through differentiation of a full irradiation area.

Background

Ink direct writing is used as a technology based on extrusion type 3D printing, and the ink can be continuously extruded to be stacked and solidified, so that the structure of a three-dimensional structure can be realized. By using different inks, a variety of structures with different properties can be printed and can be applied in a plurality of fields.

At present, the extrusion type printer is divided into an FDM printer and a photocuring printer according to different raw materials, and the FDM printer is an abbreviation of Fused Deposition Modeling, which means that Fused Deposition molding is simple, that is, a material is melted by high temperature, flows into a fine nozzle, and then a new model is molded layer by layer according to a three-dimensional drawing. The photocuring printer is also constructed layer by layer, but liquid photosensitive resin consumables are used, and the liquid photosensitive consumables can be rapidly hardened under the irradiation of special light sources such as ultraviolet rays and near infrared rays after being extruded.

Compare in fused FDM printer, the precision of photocuring printer is higher, can not appear like the FDM printer print the layer line that produces, in addition through the solid sclerosis of light, print the rate and far surpass general printer, the part of printing is dismantled easily, and top layer strong point can use abrasive paper easily to polish and detach, and the solid printer of light prints the cost lower moreover, maintains that the maintenance is simple, with low costs.

Due to the characteristics of smoother surface of the part printed by the light-curing printer, high forming speed and the like, the light-curing printer is more suitable for being applied to industries with higher fine processing requirements such as medical treatment and the like, for example, printing surgical supports and the like in the medical treatment industry.

An existing photocuring 3D printer is shown in figure 1 and comprises a triaxial positioning system, a printing head and a curing light source 4, the triaxial positioning system drives the printing head and the light source to move synchronously to print parts, the light source irradiates photocuring ink sprayed by the printing head to be cured immediately, corresponding parts can be printed quickly and accurately, and meanwhile the surfaces of the parts are kept relatively smooth.

However, the existing photocurable 3D printer has a problem that the light source is matched with the printing head, as shown in fig. 1, the existing light source is usually fixedly installed on one side of the printing head, and the light source is moved synchronously with the printing head by adjusting the positional relationship between the light source and the printing head. The light source is fixed on one side of the printing head, when the printing head moves back to or perpendicular to the light source, the light source can directly irradiate on the extruded ink to perform real-time curing, but when the printing head moves towards the light source, the printing head per se blocks the irradiation of the light source, so that the ink curing is delayed. The liquid ink has fluidity, and the delayed curing causes the top of the ink to collapse and the cross section to widen, as shown in fig. 2, wherein the a surface and the c surface are perpendicular to the light source, the b surface is back to the light source, the curing path of the ink is narrow by real-time irradiation of the light source, and the d surface faces the light source.

Disclosure of Invention

The invention provides a high-precision ink direct-writing 3D printing auxiliary device capable of eliminating differentiation of full irradiation areas, and aims to solve the problems that the printing precision of parts is affected due to the fact that the printing head moves towards a light source and ink light is delayed because the printing head shields the light source.

The scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a high accuracy ink is directly write 3D and is printed auxiliary device is eliminated in full irradiation area differentiation, includes triaxial positioning system, an ink section of thick bamboo, prints shower nozzle and equal light cone, installs an ink section of thick bamboo and prints the shower nozzle on triaxial positioning system's the support plate, prints the equal light cone of suit on the shower nozzle.

The equal light cone upper portion is circular portion, and circular portion and ink cartridge are concentric nested structure, and the lower part of equal light cone is the toper portion, and the toper portion from top to bottom diameter shortens gradually, and the bottommost end of toper portion is the ring form, and the lower extreme of toper portion is towards the spout of printing the shower nozzle simultaneously.

The inside toper cavity that is provided with of equal light cone, cavity both sides are provided with reflection of light coating, and the lower extreme of equal light cone is provided with the annular and leads to the unthreaded hole, and the annular leads to the unthreaded hole intercommunication toper cavity, and the unthreaded hole orientation is led to the annular simultaneously and the spout of printing the shower nozzle, still installs the light source on the equal light cone and connects, and the light source connects intercommunication toper cavity.

The invention further provides a full-irradiation-area differentiation high-precision ink eliminating direct-writing 3D printing auxiliary device, cantilevers are uniformly fixed on the inner side of the circular portion, shaft holes are formed in the cantilevers, shaft rods are movably sleeved in the shaft holes, the lower ends of the shaft rods protrude out of the lower portions of the cantilevers, snap springs are clamped and sleeved at the lower ends of the shaft rods, supporting rods corresponding to the cantilevers are fixed on the supporting plates, threaded holes are formed in the supporting rods, external threads are formed in the upper sections of the shaft rods, the shaft rods are sleeved in the threaded holes of the supporting rods in a matched mode through the external threads, and knobs are fixed at the tops of the shaft rods.

The invention further provides a high-precision ink direct-writing 3D printing auxiliary device for eliminating differentiation of full irradiation areas.

The invention further provides a high-precision ink direct-writing 3D printing auxiliary device capable of eliminating differentiation of the full irradiation area.

The invention further provides a high-precision ink direct-writing 3D printing auxiliary device for eliminating differentiation of full irradiation areas, wherein the supporting plate is a circular supporting plate, an annular cylinder protrudes upwards from the edge of the supporting plate, the annular cylinder is sleeved outside the ink cylinder in a matching mode, external threads are arranged on the annular cylinder, internal threads are arranged on the inner side wall of the light-equalizing cone, and the light-equalizing cone is installed on the supporting plate in a sleeved mode through the internal threads and the external threads.

The invention further provides a full-irradiation-area differential high-precision ink direct-writing 3D printing auxiliary device, wherein an annular eaves edge protrudes from the upper edge of the annular cylinder, and arc-shaped notches are uniformly formed in the eaves edge.

The invention further provides a full-irradiation-area differential high-precision ink direct-writing 3D printing auxiliary device.

The invention further provides a full-irradiation-area differentiation high-precision ink direct-writing 3D printing auxiliary device, wherein the light-equalizing cone is divided into an upper section and a lower section, the upper section is a circular part and is sleeved on the outer side of an ink cylinder, the lower section is a conical part and is sleeved at the position of a printing spray head, the lower end of the conical part is in a ring shape, and the conical part is obliquely oriented to the printing spray head.

The invention further provides a high-precision ink direct-writing 3D printing auxiliary device for eliminating differentiation of a full-irradiation area, wherein the cantilevers are distributed in a circumferential array mode, a shaft hole is formed in one cantilever, a shaft rod is sleeved in the shaft hole, the lower section of the shaft rod is a polished rod, external threads are arranged on the upper section of the shaft rod, guide rods are fixedly arranged on the other cantilevers, threaded holes are formed in supporting rods corresponding to the shaft rod, and straight holes are formed in the supporting rods corresponding to the guide rods.

The invention further provides a full-irradiation-area differentiation high-precision ink direct-writing 3D printing auxiliary device, wherein conical protrusions are arranged on the light reflecting coatings on two sides of the conical cavity.

The invention has the beneficial effects that:

compared with the existing unilateral curing light source 3D printer which is easily influenced by path change, so that the curing precision of parts is influenced, the unilateral curing light source 3D printer realizes full irradiation by arranging the uniform light cone, eliminates the difference of each path of the existing unilateral light printing, and improves the forming precision of the parts.

Install the light source joint on the equal light cone, light source joint intercommunication toper cavity, connect solidification light source through the light source joint, the light beam of light source lets in the toper cavity, the reflection of light coating of toper cavity both sides reflects the dispersion to the light beam, thereby form balanced light beam and inject by annular logical unthreaded hole, annular logical unthreaded hole shines annular light beam on the solid black water of light of extruding, synchronous irradiation at all-round no dead angle, avoid the solid delay of light that unilateral light beam caused under the different circumstances of angle, increase the solid accuracy of directly writing 3D printer printing part of light.

Equal light cone is fixed on printing the shower nozzle, along with printing shower nozzle synchronous motion, utilizes the characteristic of equal light cone dispersed light beam to disperse curing beam and form annular light beam, and annular light beam leads to the unthreaded hole through the annular and shines out, realizes shining completely printing the shower nozzle, and curing beam realizes 360 shining, avoids printing shower nozzle reverse direction and removes, shelters from the problem of unilateral curing beam. And the full irradiation is not influenced by the moving direction of the printing nozzle, the extruded light-cured ink can be irradiated in real time, the time difference of ink flowing in different directions is eliminated, and the precision of printing parts can be controlled more conveniently.

In order to ensure that the light-equalizing cone can effectively disperse light beams, the light-reflecting coating is provided with conical protrusions capable of dispersing and reflecting the light beams, when the light source connector is introduced into the conical cavity, the light beams are straight lines, the conical light-reflecting protrusions are arranged on opposite sides of the light beams, light rays directly irradiate the tops of the conical light-reflecting protrusions, and the conical inclined planes reflect the light beams to the periphery, so that the dispersed light beams are formed.

Drawings

Fig. 1 is a schematic perspective view of a conventional 3D printer.

Fig. 2 is a schematic diagram of a print path differentiation of a conventional printer.

FIG. 3 is a schematic sectional view of the light homogenizing cone of the present invention.

Fig. 4 is a schematic view of a partial enlarged structure of the light homogenizing cone of the present invention.

FIG. 5 is a schematic top view of the light-homogenizing cone of the present invention.

FIG. 6 is a schematic view of a structure of the light reflecting coating of the present invention

Fig. 7 is a schematic cross-sectional structure of another embodiment of the present invention.

Fig. 8 is a schematic top view of the embodiment of fig. 7.

FIG. 9 is a schematic cross-sectional view of a double-layer homogenizing cone.

FIG. 10 is a schematic diagram of another embodiment of a bilayer homogenizing cone.

Reference numbers in the figures: the ink jet printing device comprises a support plate 1, an ink cartridge 2, a printing spray head 3, a curing light source 4, a mounting seat 5, a support plate 6, a cantilever 7, a shaft hole, a shaft rod 8, a guide rod 9, a support rod 10, a lock wire 11, a light-equalizing cone 12, a light-reflecting coating 13, a conical cavity 14, a circular part 15, a conical part 16 and a light-passing hole 17.

Detailed Description

The invention is further illustrated with reference to the following figures and examples.

Example 1: the invention provides an auxiliary device for a light-cured ink direct-writing 3D printer, which disperses curing light into annular light beams by installing a conical light splitting channel with a light splitting function at a printing nozzle 3 and carries out all-around irradiation on ink extruded by the printer, thereby eliminating the problems that the prior printer easily has curing delay and affects the precision of printed parts by using a single-side light source, eliminating the problem of curing difference caused by different moving directions of the printer in the curing process of the prior printer and further improving the precision of the printed parts.

As shown in fig. 3, the full irradiation area differentiation elimination high-precision ink direct-writing 3D printing auxiliary device provided by the invention is used for being installed at a nozzle of a direct-writing 3D printer, an annular curing light beam is formed at the nozzle, and the synchronous curing of the extruded ink is realized by the omnibearing irradiation of the annular curing light beam, so that the problem that the different sides of parts have slight differences due to different moving directions of the printer is solved.

The printing auxiliary device is arranged on the printing nozzle 3 through a connecting piece, and the auxiliary device mainly comprises a light equalizing cone 12 arranged outside the printing nozzle 3.

The optical-ink direct-writing 3D printer comprises a three-axis positioning system, an ink cartridge 2, a printing spray head 3 and a curing light source 4, wherein the three-axis positioning system is conventional, a cantilever 7 control mechanism of the 3D printer is common, the three-axis positioning system is provided with corresponding tracks through x, y and z, and the three-dimensional positioning system is formed by combining the tracks. The existing three-axis positioning system has more brands, and can select three-axis positioning systems with different accuracies according to the requirement of printing accuracy, and the invention does not describe and explain the system too much as the prior art.

The fixed support plate 1 of installation on triaxial positioning system, the installation is used for fixing the mount pad 5 and the layer board 6 of ink cartridge 2 and printing shower nozzle 3 on the support plate 1, ink cartridge 2 is cylindrical glass section of thick bamboo, the lower extreme seal installation of ink cartridge 2 prints shower nozzle 3, the air supply is connected to the upper end of ink cartridge 2, let in gas through the air supply in to ink cartridge 2, improve the atmospheric pressure in the ink cartridge 2, control ink is extruded in the printing shower nozzle 3 of lower extreme, can indirectly control ink extrusion speed through control air flow. The ink source can also be directly communicated, and the effective extrusion of the ink can be realized by continuously filling the ink into the ink cylinder 2. Wherein, be provided with the trepanning that matches with the ink cartridge 2 size on the mount pad 5, the ink cartridge 2 suit is in this trepanning, and the side of mount pad 5 is provided with the lock silk hole that runs through, installs lock silk 11 in the lock silk hole, can lock ink cartridge 2 through the lock silk.

The supporting plate 6 is provided with a circular groove matched with the size of the lower end of the ink cartridge 2, a nozzle hole is formed in the center of the circular groove, the lower end of the ink cartridge 2 is hermetically provided with the printing nozzle 3, the lower end of the ink cartridge 2 is sleeved in the circular groove, and the printing nozzle 3 penetrates through the nozzle hole and extends downwards.

As shown in fig. 3, a light equalizing cone 12 is annularly sleeved outside the printing nozzle 3, the light equalizing cone 12 is used for dispersing the curing light beam to form a uniform annular light beam, and the periphery of the printing nozzle 3 is irradiated with the annular light beam, so as to avoid the problem that the irradiation delay of the curing light is caused by the change of the direction of the printing path of the existing single-side light beam.

Equal light cone 12 is divided into upper and lower two sections, and the upper segment is circular portion 15, and the suit is in the outside of ink cartridge 2, and the hypomere is toper portion 16, and the ring cover is in print shower nozzle 3's position to the lower extreme of toper portion 16 is annular, and the 16 slopes of toper portion towards print shower nozzle 3.

The specific structure of the light-equalizing cone 12 is as shown in fig. 4 and 5, cantilevers 7 for fixing are uniformly fixed on the inner side of a circular portion 15, the cantilevers 7 are distributed in a circumferential array manner, at least 3 cantilevers 7 are provided, at least one cantilever 7 is provided with a shaft hole, a shaft rod 8 is sleeved in the shaft hole, snap springs are installed on the upper side and the lower side of the shaft rod 8, the shaft rod 8 is installed on the cantilevers 7 through the snap springs, the shaft rod 8 can rotate in the shaft hole of the cantilever 7, the upper end of the shaft rod 8 is provided with external threads, and the rest cantilevers 7 are fixedly provided with guide rods 9;

a support rod 10 corresponding to the cantilever 7 is fixedly arranged on the supporting plate 6, a corresponding through hole is formed in the support rod 10, an internal thread is arranged in the through hole corresponding to the shaft lever 8, an external thread on the shaft lever 8 is matched with the internal thread, and the rest through holes are matched with the guide rod 9 in size. Through the rotating shaft lever 8, the internal thread and the external thread rotate relatively, the upper height and the lower height of the light equalizing cone 12 are adjusted, and the lower end of the conical part 16 is conveniently aligned to the printing nozzle 3.

As shown in fig. 4, a conical cavity 14 is arranged inside the light-equalizing cone 12, reflective coatings are arranged on two sides of the conical cavity 14, an annular light-passing hole 17 is arranged at the lower end of the light-equalizing cone 12, the annular light-passing hole 17 is communicated with the conical cavity 14, the annular light-passing hole 17 faces a nozzle of the printing nozzle 3, a light source connector is further mounted on the light-equalizing cone 12, the light source connector is communicated with the conical cavity 14 and is connected with the curing light source 4 through the light source connector, a light beam of the light source is introduced into the conical cavity 14, the reflective coatings on two sides of the conical cavity 14 reflect and disperse the light beam so as to form a balanced light beam and emit the balanced light beam from the annular light-passing hole 17, the annular light beam irradiates on the extruded light-curing ink through the annular light-passing hole 17, synchronous irradiation without dead angles in all directions is performed, light-curing delay caused by a single-side light beam under the condition of different angles is avoided, and the accuracy of the printing part of the light-curing direct writing 3D printer is improved.

Equal light cone 12 is fixed on printing shower nozzle 3, along with printing shower nozzle 3 synchronous motion, utilizes the characteristic of equal light cone 12 dispersion light beam to disperse the curing beam and become annular light beam, and annular light beam passes through annular unthreaded hole 17 and shines out, realizes shining completely printing shower nozzle 3, and the curing beam realizes 360 shining, avoids printing 3 reverse movements of shower nozzle, shelters from the problem of unilateral curing beam. And the full irradiation is not influenced by the moving direction of the printing nozzle 3, the extruded light-cured ink can be irradiated in real time, the time difference of ink flowing in different directions is eliminated, and the precision of printing parts can be controlled more conveniently.

And use the equal light cone 12 to carry out the light beam dispersion, avoid needing to use the problem that a plurality of light sources shine, if use a plurality of light sources to shine, need fix a plurality of light source generators on printing shower nozzle 3, increased the complexity of printer, install a plurality of light source generators and seriously influence the weight and the volume of printing shower nozzle 3, increased the fixed cost of printing shower nozzle 3, its inertia of printer of weight increase strengthens, is unfavorable for the stable output of printing the process.

The photo-curing ink is generally UV curing ink, the ink reaches curing instantly (in seconds) after absorbing energy through UV ray irradiation, an ink layer generated by polymer high-density cross-linking combination is formed through rapid drying of ink drops on the surface of a printing stock, curing of the ink layer mainly depends on a photoinitiator to absorb photons with specific wavelength, the ink layer is excited to an excited state to form free radicals or cations, then through transmission of intermolecular energy, a polymerizable prepolymer, a photosensitive monomer and the like are changed into an excited state to generate charge transfer complexes, and the complexes are continuously cross-linked and polymerized to generate a high molecular polymer which is cured into a three-dimensional network structure in a very short time.

Therefore, the main factor influencing the light-cured ink is the wavelength of light, the light-equalizing cone 12 provided by the invention mainly depends on the reflection and scattering of light and the like to perform the dispersion treatment of light beams, and the reflection and scattering do not cause the fluctuation of light beam energy and the wavelength of light, so that the annular light beams formed by the dispersion of the light-equalizing cone 12 can also realize the curing of the light-cured ink without influencing the use of a 3D printer.

Example 2: the light reflecting coatings on the two sides of the conical cavity 14 are provided with conical protrusions, in order to ensure that the light homogenizing cone 12 can effectively disperse light beams, the conical protrusions capable of dispersing and reflecting the light beams are arranged on the light reflecting coatings, as shown in fig. 6, when the light source connector is introduced into the conical cavity 14, the light beams are straight lines, the conical light reflecting protrusions are arranged right opposite to the opposite sides of the light beams, the light rays directly irradiate the tops of the conical light reflecting protrusions, and the conical inclined planes reflect the light beams to the periphery, so that the dispersed light beams are formed.

Example 3: when a direct-writing 3D printer prints a part, the printer usually prints the outer contour of the part first, and then fills the inside of the contour. According to the sequence of printing inside and outside parts and different requirements for printing and filling inside and outside parts, the printer has different requirements for the curing speed of ink, and the single light source irradiation is difficult to meet the change of the curing speed at different positions.

In view of the requirement, the present invention further provides a light-equalizing cone structure of a double-layered packaged light source as shown in fig. 9, wherein an auxiliary light-equalizing cone is sleeved on the basis of the original light-equalizing cone, the auxiliary light-equalizing cone has the same structure as the original light-equalizing cone, and a lower end cone portion of the auxiliary light-equalizing cone faces above a light beam convergence point of the original light-equalizing cone.

The auxiliary light equalizing cone can perform preliminary irradiation on the extruded ink in advance, so that the viscosity of the extruded ink is improved, and the relatively stable shape is more easily kept, so that the auxiliary light equalizing cone is used as the outer contour of a part.

And after the ink with higher viscosity is stacked, the ink is further cured through the original light homogenizing cone, so that the surface of the part is further accurate, and the strength of the outer contour is improved.

For ink filling inside the profile, the auxiliary light homogenizing cone can be closed, conventional extrusion curing is carried out, and the printing speed of the part is increased.

Example 4: the length of the printing path has certain influence on the moving speed of the printing nozzle, the long-path printing nozzle lacks variation, the nozzle moving speed is high, the short-path turning is more, and the moving speed of the nozzle is influenced.

To solve this problem, on the basis of embodiment 3, as shown in fig. 10, the original light-equalizing cone and the auxiliary light-equalizing cone are sleeved by a threaded connection, a gear ring surrounding the outer wall is fixed outside the circular part of the original light-equalizing cone, a control motor is installed on the auxiliary light-equalizing cone, a gear meshed with the gear ring is installed on the control motor, the motor is used for driving the gear to rotate, so that the original light-equalizing cone of the fixed gear ring is driven to rotate, threads between the original light-equalizing cone and the auxiliary light-equalizing cone rotate relatively, and up-and-down movement of the original light-equalizing cone is realized.

Through the moving speed of monitoring shower nozzle such as sensor, the controller is according to moving speed control motor direction of rotation to control reciprocating of former light cone, and then change the distance between former light cone and the supplementary light cone lower extreme light beam, thereby the change speed of ink is extruded in control.

The foregoing has described the general principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.

Claims

1. A full-irradiation-area differential high-precision ink direct-writing 3D printing auxiliary device is characterized by comprising a three-axis positioning system, an ink cylinder, a printing spray head and a light-equalizing cone, wherein the ink cylinder and the printing spray head are installed on a support plate of the three-axis positioning system, and the light-equalizing cone is sleeved on the printing spray head;

the upper part of the light-equalizing cone is a circular part, the circular part and the ink cylinder are of a concentric sleeving structure, the lower part of the light-equalizing cone is a conical part, the diameter of the conical part is gradually shortened from top to bottom, the lowest end of the conical part is in a circular ring shape, and the lower end of the conical part faces a nozzle of a printing spray head;

the inside toper cavity that is provided with of homodromous awl, the cavity both sides are provided with reflection of light coating, and the lower extreme of homodromous awl is provided with the annular and leads to the unthreaded hole, and the unthreaded hole intercommunication toper cavity is led to the annular, and the unthreaded hole orientation is printed the spout of shower nozzle simultaneously to the annular, still installs the light source on the homodromous awl and connects, and the light source connects intercommunication toper cavity.

2. The full-irradiation-area differentiation high-precision ink direct-writing 3D printing auxiliary device according to claim 1, characterized in that cantilevers are uniformly fixed on the inner sides of the circular portions, shaft holes are formed in the cantilevers, shaft rods are movably sleeved in the shaft holes, the lower ends of the shaft rods protrude below the cantilevers, snap springs are sleeved on the lower ends of the shaft rods, support rods corresponding to the cantilevers are fixed on the support plates, threaded holes are formed in the support rods, external threads are formed in the upper sections of the shaft rods, the shaft rods are sleeved in the threaded holes of the support rods in a matched mode through the external threads, and knobs are fixed at the tops of the shaft rods.

3. The full irradiation area differentiation elimination high precision ink direct writing 3D printing auxiliary device according to claim 1, characterized in that the support plate is provided with a mounting seat and a support plate, a round hole is arranged in the middle of the mounting seat, a groove is arranged on the support plate, the ink cartridge is penetrated and sleeved in the round hole, the lower end of the ink cartridge is clamped and sleeved in the groove of the support plate, a through hole is arranged in the middle of the groove, the printing nozzle is installed at the lower end of the ink cartridge and is communicated with the inside of the ink cartridge, and the printing nozzle extends out of the through hole in the middle of the groove.

4. The direct-writing 3D printing auxiliary device for eliminating high-precision ink according to the full-irradiation-area differentiation of the claim 3 is characterized in that a screw locking hole is formed in the side face of the mounting seat, a screw is installed in the screw locking hole, and the ink cartridge is fixed through the screw locking.

5. The direct-writing 3D printing auxiliary device for eliminating high-precision ink according to claim 3, wherein the supporting plate is a circular supporting plate, an annular cylinder protrudes upwards from the edge of the supporting plate, the annular cylinder is sleeved outside the ink cylinder in a matching manner, an external thread is arranged on the annular cylinder, an internal thread is arranged on the inner side wall of the light-homogenizing cone, and the light-homogenizing cone is installed on the supporting plate in a sleeved manner through the internal thread and the external thread.

6. The high-precision ink direct-writing 3D printing auxiliary device for eliminating the difference of the full irradiation areas according to claim 5, wherein an annular brim is protruded from the upper edge of the annular cylinder, and arc-shaped notches are uniformly formed in the brim.

7. The direct-writing 3D printing auxiliary device for eliminating high-precision ink according to the full-irradiation-area differentiation of the claim 1 is characterized in that the ink cylinder is a cylindrical glass cylinder, the lower end of the ink cylinder is hermetically provided with a printing nozzle, the upper end of the ink cylinder is connected with an air source, and the ink extrusion speed is controlled through air ventilation.

8. The high-precision ink direct-writing 3D printing auxiliary device for eliminating the difference of the total irradiation areas according to claim 1, wherein the light-equalizing cone is divided into an upper section and a lower section, the upper section is a circular part and is sleeved outside the ink cartridge, the lower section is a conical part, the ring is sleeved at the position of the printing nozzle, the lower end of the conical part is annular, and the conical part is inclined towards the printing nozzle.

9. The direct-writing 3D printing auxiliary device for eliminating high-precision ink by full-irradiation-area differentiation as claimed in claim 2, wherein the cantilevers are distributed in a circumferential array manner, one of the cantilevers is provided with a shaft hole, a shaft rod is sleeved in the shaft hole, the lower section of the shaft rod is a polished rod, the upper section of the shaft rod is provided with external threads, the other cantilevers are fixedly provided with guide rods, the support rods corresponding to the shaft rod are provided with threaded holes, and the support rods corresponding to the guide rods are provided with straight holes.

10. The full shot area differentiation elimination high precision ink direct writing 3D printing auxiliary device according to claim 1, wherein the light reflecting coating on both sides of the conical cavity is provided with conical protrusions.