CN114103123A

CN114103123A - Photocuring 3D prints aftertreatment and disappears line equipment

Info

Publication number: CN114103123A
Application number: CN202111451055.0A
Authority: CN
Inventors: 杜宇; 黄可欣; 杜雪; 罗攀
Original assignee: Chengdu Small Rocket Technology Co ltd
Current assignee: Chengdu Small Rocket Technology Co ltd
Priority date: 2021-12-01
Filing date: 2021-12-01
Publication date: 2022-03-01
Anticipated expiration: 2041-12-01
Also published as: CN114103123B

Abstract

The invention provides photocuring 3D printing post-treatment grain-eliminating equipment which comprises a softening unit, a grain-eliminating unit, a cleaning unit, a drying unit and a curing unit, wherein the softening unit is sequentially arranged and used for softening surface layer grains of parts; the part cleaning and drying device further comprises a conveying unit and a central control system, wherein the conveying unit is used for conveying and enabling parts to sequentially pass through the softening unit, the grain eliminating unit, the cleaning unit, the drying unit and the curing unit, and the central control system is used for controlling the softening unit, the grain eliminating unit, the cleaning unit, the drying unit, the curing unit and the conveying unit. The method has the effect of solving the problems of time and labor waste and poor treatment effect in the prior art for treating the photocuring 3D printed part layer lines.

Description

Photocuring 3D prints aftertreatment and disappears line equipment

Technical Field

The invention relates to the technical field of additive manufacturing, in particular to a photocuring 3D printing post-treatment line-removing device.

Background

3D printing is one of rapid prototyping technologies, which is a technology for constructing an object by using a bondable material, such as powdered metal or plastic, and printing layer by layer on the basis of a digital model file. The photocuring 3D printing technology is a mature 3D printing technology, and a product is formed by adopting a photocuring 3D printer to complete superposition and solidification of a plurality of layers in the vertical direction; due to the inherent defects of the photocuring 3D printing and forming technology, the surface of the part has the striation distribution, the final presentation effect of a printed product is influenced, and the surface of the part can be improved after being processed.

Generally, the lamination processing mode of the photocuring 3D printed part adopts manual sand paper or a grinding machine to grind, which not only wastes time and labor, but also has the problems of uneven grinding and easy part damage; in addition, the mode of washing the piece with alcohol, dismantling the support, air-drying and carrying out ultraviolet curing is adopted for post-treatment, and the post-treatment mode still consumes a large amount of labor and has poor treatment effect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a photo-curing 3D printing post-processing line-eliminating device which can solve the problems that in the prior art, the processing of photo-curing 3D printing part line is time-consuming and labor-consuming, and the processing effect is poor.

According to the embodiment of the invention, the photocuring 3D printing post-treatment grain removing equipment comprises a softening unit, a grain removing unit, a cleaning unit, a drying unit and a curing unit, wherein the softening unit is used for softening the surface layer grains of the part, the grain removing unit is used for removing the softened surface layer grains, the cleaning unit is used for cleaning the part after the grain removing, the drying unit is used for drying the part, and the curing unit is used for curing the surface layer of the part; the part cleaning and drying device further comprises a conveying unit and a central control system, wherein the conveying unit is used for conveying and enabling parts to sequentially pass through the softening unit, the grain eliminating unit, the cleaning unit, the drying unit and the curing unit, and the central control system is used for controlling the softening unit, the grain eliminating unit, the cleaning unit, the drying unit, the curing unit and the conveying unit.

By adopting the technical scheme, when the lines are eliminated, the parts to be processed are placed in the conveying unit, the conveying unit is utilized to convey the workpieces to pass through the softening unit, the line eliminating unit, the cleaning unit, the drying unit and the curing unit in sequence, softening the surface resin of the part by using a softening unit, carrying out grain eliminating treatment on the softened layer grains by using a grain eliminating unit, cleaning the part with the layer grains eliminated by using a cleaning unit, the drying unit is used for drying the cleaned part, the curing unit is used for curing the surface layer of the dried part so as to achieve the corresponding surface performance index, therefore, the problems that in the prior art, time and labor are wasted and the processing effect is poor in the process of photo-curing 3D printing of part layer lines are solved, the post-processing speed is increased, the post-processing labor cost is reduced, and the surface effect of parts is uniform and high in smoothness.

Preferably, the softening unit includes softening storehouse, cell body, the softening liquid inlet pipe of one end intercommunication cell body and a plurality of equipartition in the softening liquid shower nozzle of softening in the storehouse, the softening liquid shower nozzle communicates in the softening liquid inlet pipe other end, just the softening liquid has been stored in the cell body.

By adopting the technical scheme, when the surface striations of the part are softened, the central control system controls the softening liquid spray head to spray the softening liquid towards the part, and after a certain time, the resin on the surface of the part is softened; after softening, the parts are conveyed into the grain eliminating unit through the conveying unit under the control of the central control system so as to be processed in the next step.

Preferably, the softening liquid comprises silicon dioxide and alcohol with the concentration of 80-95%.

Through adopting above-mentioned technical scheme, when softening treatment is carried out to spare part layer line, the alcohol of high concentration can be so that resin material's layer line softens, and simultaneously, silica distributes on the part surface along with alcohol to form the guard action to the spare part top layer, reduce the later stage and do the impact influence to the top layer when eliminating the line and handling.

Preferably, the wrinkle removing unit comprises a wrinkle removing bin, a wrinkle removing medium source and a high-pressure air gun which is communicated with the wrinkle removing medium source and arranged in the wrinkle removing bin, wherein the wrinkle removing medium source is a mixture of water and wrinkle removing powder.

By adopting the technical scheme, after the surface striations of the part are softened, the striation elimination treatment is carried out, at the moment, the central control system controls the high-pressure air gun to spray a striation elimination medium, namely a mixture of water and striation elimination powder, towards the part, after a certain time, the resin part softened on the surface of the part is eliminated and falls off, and the part is filled by the striation elimination powder in an impacting way to form a smooth surface; after the lines are eliminated, the parts are conveyed into a cleaning unit through a conveying unit under the control of a central control system so as to be processed next.

Preferably, the anti-striation powder comprises silicon dioxide.

By adopting the technical scheme, when the surface layer of the part is subjected to the wrinkle removing treatment, the mixture of silicon dioxide and water is sprayed to the surface layer softened by the part software through the high-pressure air gun, the wrinkle removing powder is impacted on the softened layer wrinkles of the part at a high speed by high-pressure air and falls off, and gaps are filled at the same time, so that the wrinkle removing treatment is completed; meanwhile, in the process of eliminating the lines, water can form a certain protection and buffering effect to prevent the high-speed line eliminating powder from crashing the surface of the part, so that the surface of the part is protected while the lines are eliminated.

Preferably, the cleaning unit comprises a cleaning bin and a plurality of spray guns which are arranged in the cleaning bin and communicated with a clear water source; the drying unit comprises an air drying bin and a plurality of drying air guns which are arranged in the air drying bin and communicated with warm air; the curing unit comprises a curing bin, a plurality of ultraviolet lamps arranged in the curing bin and an ultraviolet light reflecting plate arranged in the curing bin.

By adopting the technical scheme, after the pattern removing treatment is carried out, the spray gun is controlled by the central control system to wash the parts of the pattern; then, drying the parts by a drying air gun; and under the transmission of the transmission unit, the surface layer material of the part is cured through ultraviolet irradiation, so that the corresponding surface performance index is achieved.

Preferably, the conveying unit comprises a conveying belt controlled by a central control system and a supporting assembly arranged on the conveying belt and used for placing parts, the feeding end of the conveying belt extends out of the softening unit, and the discharging end of the conveying belt extends out of the curing unit.

Through adopting above-mentioned technical scheme, when eliminating the line and handling the striation of the layer line of part, place the part, be fixed in supporting component to it can to carry out the conveying through center control system control conveyer belt.

Preferably, the supporting component comprises a plurality of supporting rods fixed on the belt surface of the conveying belt, a base detachably connected to the supporting rods and having an upper opening structure, a base rotatably connected to the upper opening of the base, a driving piece arranged in the base and driving the base to rotate, and a clamping piece arranged on the base and clamped at the bottom of the part, wherein the driving piece is connected to the central control system.

By adopting the technical scheme, when the part is conveyed, the part is placed on the chassis, and is clamped and fixed on the chassis through the clamping piece; in the process of conveying and carrying out post-treatment, the driving piece is controlled by the central control system to drive the chassis to rotate, so that the parts are driven to rotate in the process of being treated, and the post-treatment effect on the parts is enhanced. After-treatment is finished, when the part is conveyed out of the curing unit by the conveyor belt, the part and the base can be simultaneously taken down, so that after the conveyor belt rotates, the base is placed and the post-treatment work of the next part is carried out.

Preferably, the clamping piece is two electromagnets which are slidably connected to the chassis, and the two electromagnets are oppositely arranged and mutually attracted.

Through adopting above-mentioned technical scheme, at the in-process of being fixed in the part through the holder, usable two electromagnets opposite poles attract's effect centre gripping in part bottom both sides.

Preferably, the washing machine further comprises a recovery bin provided with a plurality of compartments, and the recovery bin is communicated with the softening unit and the cleaning unit through pipelines.

Through adopting above-mentioned technical scheme, carry out the in-process of aftertreatment through softening unit and cleaning element to the spare part, accessible pipeline exports the medium of both aftertreatment to cyclic utilization after purifying.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the method comprises the steps that a softening unit is arranged to change parts into laminated patterns for softening, a pattern eliminating unit is arranged to eliminate the laminated patterns after softening, a cleaning unit is arranged to clean the parts after the laminated patterns are eliminated, a drying unit and a curing unit are arranged to dry and cure the cleaned parts, the parts are conveyed through a conveying unit, and each unit is integrally controlled through a central control system, so that the whole semi-automatic post-treatment process of the photocuring 3D printed parts is formed, a worker only needs to replace the parts to be subjected to post-treatment and take down the treated parts, and the problems that in the prior art, the time and labor are wasted, and the treatment effect is poor in the process of photocuring 3D printed part laminated patterns are solved;

2. softening the part lamination by adopting softening liquid, and eliminating the lamination of the part by adopting the lamination eliminating powder; meanwhile, in the process that the alcohol softens the layer grains, the silicon dioxide protects the surface layer of the part, and the softening of the surface layer of the part except the layer grains is reduced; when the silicon dioxide impacts the softened lamellar grains at a high speed and makes the lamellar grains fall off, water forms a certain buffer effect, and micro pits formed on the surface layer of the part due to impact are further reduced, so that a good wrinkle eliminating effect is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of an embodiment of the present invention, showing primarily the support assembly;

FIG. 3 is a flow chart of a post-process of an embodiment of the present invention.

In the above drawings: 1. a softening unit; 11. a softening bin; 12. a tank body; 13. a softened liquid feeding pipe; 14. a softening liquid spray head; 2. a wrinkle eliminating unit; 21. a grain eliminating bin; 22. a source of streak-reducing media; 23. a high pressure air gun; 3. a cleaning unit; 31. cleaning the bin; 32. a spray gun; 4. a drying unit; 41. air drying the storehouse; 42. drying the air gun; 5. a curing unit; 51. a curing bin; 52. an ultraviolet lamp; 53. an ultraviolet light reflecting plate; 6. a transfer unit; 61. a conveyor belt; 611. a weep hole; 62. a support assembly; 621. a support bar; 6211. a limiting rod; 622. a base; 623. a chassis; 624. a drive member; 625. a clamping member; 7. a central control system; 8. and (6) recovering the bin.

Detailed Description

The invention will be further described with reference to the accompanying figures 1-3.

Referring to fig. 1 and 3, an embodiment of the invention provides a photocuring 3D printing post-processing graining apparatus, which includes a softening unit 1, a graining unit 2, a cleaning unit 3, a drying unit 4, a curing unit 5, a conveying unit 6 and a central control system 7. The softening unit 1, the wrinkle eliminating unit 2, the cleaning unit 3, the drying unit 4 and the curing unit 5 are arranged in sequence and are provided with windows which are communicated with each other; softening unit 1 is used for softening part top layer line, and line unit 2 is used for eliminating the layer line after softening, and cleaning unit 3 is used for the part after the washing line, and drying unit 4 is used for the part after the stoving washing, and curing unit 5 is used for the part top layer after the solidification drying.

The conveying unit 6 is arranged at a window where the softening unit 1, the graining unit 2, the cleaning unit 3, the drying unit 4 and the curing unit 5 are communicated, so as to convey the parts, and the parts are subjected to post-processing operations of different steps in different units. The central control system 7 is used for connecting the softening unit 1, the wrinkle eliminating unit 2, the cleaning unit 3, the drying unit 4, the curing unit 5 and the conveying unit 6 so as to control the operation of the conveying unit 6, enable the parts to reach different units and control the different units to carry out different post-treatment operations; the control modes of the central control system 7, the transmission unit 6 and each unit can be electric control or other signal control modes, which are well known to those skilled in the art, and therefore, the detailed control modes thereof will not be described in detail herein. Namely, through each unit and the central control system 7 for controlling each unit, a semi-automatic post-processing line-eliminating system is formed, so that the problems that time and labor are wasted and the processing effect is poor in the process of processing the photocuring 3D printing part line by adopting a manual polishing mode in the prior art are solved.

Referring to fig. 1 and 2, specifically, the softening unit 1 includes a softening bin 11, a tank body 12, a softening liquid feeding pipe 13 and a plurality of softening liquid nozzles 14; two opposite sides of the softening bin 11 are provided with windows for the conveying unit 6 to convey parts to pass through; softening liquid is stored in the tank body 12, and comprises silicon dioxide and alcohol with the concentration of 80-95%; one end of a softening liquid feeding pipe 13 is communicated with the pool body 12, the other end is communicated with the softening bin 11, and the softening liquid feeding pipe 13 is provided with a valve to lead out softening liquid. A plurality of softening liquid shower nozzles 14 equipartitions are in softening storehouse 11, and all communicate in softening liquid inlet pipe 13 through the pipeline to spout the softening liquid and spout to the part, accomplish the softening to the part striation.

In the softening process, high-concentration alcohol can dissolve the surface layer of the part made of resin, namely, the lamellar grains are softened by controlling the softening time and the concentration of a softening liquid; meanwhile, in the softening process, the silicon dioxide is sprayed on the surface layer of the part, a certain protection effect can be formed on the surface layer of the part, and the damage to other surface layers of the part is reduced while the softening effect on the layer grains is kept.

The wrinkle eliminating unit 2 comprises a wrinkle eliminating bin 21, a wrinkle eliminating medium source 22 and a high-pressure air gun 23; the grain eliminating bin 21 is provided with a window communicated with the window of the softening bin 11 for the transmission unit 6 to transmit parts to pass through; the wrinkle-removing medium source 22 is a mixture of water and wrinkle-removing powder, the wrinkle-removing powder comprising silicon dioxide; the high-pressure air gun 23 is arranged in the grain eliminating bin 21 and is communicated with the grain eliminating medium source 22 through a pipeline, so that a mixture of water and grain eliminating powder is sprayed to and impacts on the softened lamellar grains through the high-pressure air gun 23, and the softened lamellar grains are eliminated and fall off; in the process of eliminating the striations, the water is attached to the silicon dioxide, so that a buffer effect can be formed, pits formed by the collision of the surface layer of the part are reduced, and the damage to the surface layer of the part is further reduced.

The cleaning unit 3 includes a cleaning bin 31 and a plurality of spray guns 32; the drying unit 4 includes an air drying bin 41 and a plurality of drying air guns 42; the curing unit 5 includes a curing chamber 51, a plurality of uv lamps 52, and a uv reflector 53. The cleaning bin 31, the air drying bin 41 and the curing bin 51 are all provided with windows communicated with the window of the grain eliminating bin 21, so that the parts are conveyed by the conveying unit 6 to pass through; the spray gun 32 is arranged in the cleaning bin 31 and communicated with a clear water source so as to spray water out of the spray gun 32 and wash parts after the grain treatment; the drying air gun 42 is arranged in the air drying bin 41 and communicated with warm air so as to dry the cleaned parts; the ultraviolet lamps 52 select 402nm wavelength ultraviolet light, and the ultraviolet lamps 52 are uniformly distributed in the curing bin 51 to perform curing treatment on the dried parts, and the ultraviolet light reflecting plate 53 reflects light rays to enhance the curing effect. After the curing is completed, the part is transferred out by the transfer unit 6.

In other embodiments, clean water can be directly put into the cleaning bin 31, and a vortex device is arranged to stir the water into vortex cleaning parts.

Referring to fig. 1 and 2, the conveying unit 6 includes a conveyor belt 61 and a support assembly 62; the conveyor belt 61 is fixed through a support and sequentially passes through windows of the softening bin 11, the grain eliminating bin 21, the cleaning bin 31, the air drying bin 41 and the curing bin 51, the feeding end of the conveyor belt 61 extends out of the softening bin 11, and the discharging end of the conveyor belt extends out of the curing bin 51; the driving part of the conveyor belt 61 is connected with a central control system 7 through signals so as to control the opening and closing of the conveyor belt 61 through the central control system.

The support assembly 62 comprises a plurality of support bars 621, a base 622 in an open-top configuration, a chassis 623, a drive member 624, and a clamp member 625; the plurality of support rods 621 are vertically arranged at intervals, the bottom ends of the support rods are fixed on the belt surface of the conveyor belt 61, and limit rods 6211 are inserted into the bottom ends of the support rods; the base 622 is transversely provided with a socket for inserting the limit rod 6211, so that the detachable connection between the base 622 and the supporting rod 621 is realized; an annular dovetail groove is further formed in the upper opening of the base 622. The chassis 623 is pivotally connected to the upper opening of the base 622 by an annular dovetail block for placement of parts. The driving element 624 is disposed in the base 622, and its driving end is coaxially connected to the chassis 623 and is in signal connection with the central control system 7 to control the rotation of the chassis 623. The clamping members 625 are oppositely arranged and slidably connected to the upper side of the bottom plate 623, in the embodiment of the invention, the clamping members 625 are two electromagnets slidably connected to the bottom plate 623, and the two electromagnets are oppositely arranged and mutually attracted to form a clamping and fixing effect on the part.

When the parts are subjected to post-processing, the parts are clamped on the chassis 623 through the clamping piece 625, then the rotation of the conveyor belt 61 is controlled intermittently through the central control system, so that the parts sequentially reach the softening bin 11, the grain eliminating bin 21, the cleaning bin 31, the air drying bin 41 and the curing bin 51, the softening and grain eliminating processing of the part grains is completed, the parts are cleaned, dried and cured, the parts are conveyed out of the curing bin 51 through the conveyor belt 61, and the post-processing work of the parts is completed.

In other embodiments, the clamping member 625 may be two cylinders facing each other and connected to the central control system 7.

The belt surface of the conveyor belt 61 is provided with a plurality of liquid leaking holes 611 so as to facilitate the outflow of substances such as softening liquid, wrinkle removing powder, water and the like.

The invention also comprises a recovery bin 8 with a plurality of compartments, wherein the recovery bin 8 is communicated with the softening bin 11 and the cleaning bin 31 through pipelines so as to lead out softening liquid and waste water and facilitate the recycling after secondary treatment.

In the implementation of the invention, the material receiving mechanism is arranged at the lower side of the conveyor belt 61 and is arranged at the window of each bin body for the conveyor belt 61 to pass through, so as to form a receiving effect on the liquid falling from the belt surface of the conveyor belt 61, thereby reducing the probability that the liquid falls on the ground and pollutes the working environment; specifically, the structure of the utility model can be a basin body with an upper opening structure, or an inclined plate which is obliquely arranged at the window of each bin body, and liquid is guided into the bin body through the window.

Of course, in other embodiments, the mechanical arms may be disposed at both the feeding end and the discharging end of the conveyor belt 61, and the mechanical arms are controlled by the central control system 7, so as to reduce the operations of manual feeding and discharging, and further realize automatic operation.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims

1. The utility model provides a photocuring 3D prints aftertreatment and disappears line equipment which characterized in that: the device comprises a softening unit (1) for softening the surface layer grains of the part, a grain eliminating unit (2) for eliminating the softened surface layer grains, a cleaning unit (3) for cleaning the part after the grain elimination, a drying unit (4) for drying the part and a curing unit (5) for curing the surface layer of the part, which are sequentially arranged; the automatic part cleaning and drying device is characterized by further comprising a conveying unit (6) and a central control system (7), wherein the conveying unit (6) is used for conveying and enabling parts to sequentially pass through the softening unit (1), the grain eliminating unit (2), the cleaning unit (3), the drying unit (4) and the curing unit (5), and the central control system (7) is used for controlling the softening unit (1), the grain eliminating unit (2), the cleaning unit (3), the drying unit (4), the curing unit (5) and the conveying unit (6).

2. The photocuring 3D post-printing treatment de-texturing apparatus of claim 1, wherein: softening unit (1) is including softening storehouse (11), cell body (12), softening liquid inlet pipe (13) and a plurality of equipartition in softening storehouse (11) of one end intercommunication cell body (12) softening liquid shower nozzle (14), softening liquid shower nozzle (14) communicate in softening liquid inlet pipe (13) other end, just the softening liquid has been stored in cell body (12).

3. The photocuring 3D post-printing treatment de-texturing apparatus of claim 2, wherein: the softening liquid comprises silicon dioxide and alcohol with the concentration of 80-95%.

4. The photocuring 3D post-printing treatment de-texturing apparatus of claim 1, wherein: the grain eliminating unit (2) comprises a grain eliminating bin (21), a grain eliminating medium source (22) and a high-pressure air gun (23) which is communicated with the grain eliminating medium source (22) and arranged in the grain eliminating bin (21), wherein the grain eliminating medium source (22) is a mixture of water and grain eliminating powder.

5. The photocuring 3D post-printing treatment de-texturing apparatus of claim 4, wherein: the anti-striation powder comprises silicon dioxide.

6. The photocuring 3D post-printing treatment de-texturing apparatus of claim 1, wherein: the cleaning unit (3) comprises a cleaning bin (31) and a plurality of spray guns (32) which are arranged in the cleaning bin (31) and communicated with a clear water source; the drying unit (4) comprises an air drying bin (41) and a plurality of drying air guns (42) which are arranged in the air drying bin (41) and communicated with warm air; the curing unit (5) comprises a curing bin (51), a plurality of ultraviolet lamps (52) arranged in the curing bin (51) and an ultraviolet light reflecting plate (53) arranged in the curing bin (51).

7. The photocuring 3D post-printing treatment de-texturing apparatus of claim 1, wherein: the conveying unit (6) comprises a conveying belt (61) controlled by a central control system (7) and a supporting assembly (62) arranged on the conveying belt (61) and used for placing parts, the feeding end of the conveying belt (61) extends out of the softening unit (1), and the discharging end of the conveying belt extends out of the curing unit (5).

8. The photocuring 3D post-printing treatment de-texturing apparatus of claim 7, wherein: the supporting assembly (62) comprises a plurality of supporting rods (621) fixed on the belt surface of the conveying belt (61), a base (622) detachably connected to the supporting rods (621) and having an upper opening structure, a base plate (623) rotatably connected to the upper opening of the base (622), a driving piece (624) arranged in the base (622) and driving the base plate (623) to rotate, and a clamping piece (625) arranged on the base plate (623) and clamped at the bottom of a part, wherein the driving piece (624) is connected to the central control system (7).

9. The photocuring 3D print post-processing de-texturing apparatus of claim 8, wherein: the clamping piece (625) is composed of two electromagnets which are connected to the chassis (623) in a sliding mode, and the electromagnets are arranged oppositely and attract each other.

10. The photocuring 3D post-printing treatment de-texturing apparatus of claim 1, wherein: still including being provided with recovery storehouse (8) of a plurality of compartments, recovery storehouse (8) are through pipeline intercommunication in softening unit (1) and cleaning unit (3).