CN212352919U

CN212352919U - LCD photocuring printer

Info

Publication number: CN212352919U
Application number: CN202020851129.4U
Authority: CN
Inventors: 张云玲; 李勤涛; 龚晓群; 张长英; 张建祥
Original assignee: Nanjing Institute of Industry Technology
Current assignee: Nanjing Institute of Industry Technology
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2021-01-15
Anticipated expiration: 2030-05-20

Abstract

The utility model discloses a LCD photocuring printer relates to photocuring printer technical field, including casing and the printing chamber of setting in the casing, the bottom of printing the chamber is equipped with the workstation, be equipped with the LCD screen on the workstation, the resin groove has been placed on lieing in the LCD screen on the workstation. The utility model discloses a set up the material loading solenoid valve, the resin can be added into the resin tank automatically, has improved printing efficiency, through setting up the feed back solenoid valve, realize the recovery of unnecessary resin in the resin tank; the heating device is arranged in the shell, so that the resin can be preheated, and the printing cavity can be insulated, the stability of the environment in the printing process is improved, the quality of printed products is improved, and the adaptability of the device is improved; easy operation, simple to operate under electric telescopic handle's drive, accomplishes the unloading of printing the piece at the lower extreme horizontal direction of profiled sheeting, avoids causing the damage to the profiled sheeting.

Description

LCD photocuring printer

Technical Field

The utility model relates to a photocuring printer technical field, concretely relates to LCD photocuring printer.

Background

The 3D printing technology is a hot door technology of additive manufacturing at present, can overcome the special structure obstacle that traditional machining can not realize, has very big advantage in industrial production, can realize the simplification production of arbitrary complicated structural component. One of the 3D printing technologies is called photocuring 3D printing, and because of its small device size, the technology is simple and fast becoming a research hotspot. The existing photocuring 3D printing technologies are classified into 3 laser stereolithography technologies, namely SLA (laser point light source curing), DLP (projector area light source curing) and LCD (liquid crystal area light source curing).

Notice the utility model that the number is CN208343459U provides a quick photocuring's LCD 3D printer, can let the direct printing opacity of ultraviolet ray, improved 3D printing precision, printing speed greatly and printed the success rate.

However, in actual use, most of the existing LCD photocuring printers have the following disadvantages: firstly, resin still needs to be added into a resin tank manually, particularly, a model part with a larger size needs to be printed, whether resin materials in the resin tank are sufficient or not needs to be observed all the time, the operation process is complicated, and the printing efficiency is reduced to a certain extent; secondly, under the working condition of low environmental temperature, the resin is easy to cure, so that the stability of the printing process is poor, the product quality is influenced, and resin materials are wasted; and thirdly, when the model part solidified on the forming plate is unloaded, the forming platform needs to be detached, and then the model part is shoveled down from the forming plate by a shovel, and the process is in a mode of shoveling down obliquely, so that irreversible damage is easily caused to the forming plane of the forming plate.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a not enough to prior art, the utility model aims at providing a LCD photocuring printer can realize the automatic interpolation of resin, has effectively improved printing efficiency.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a LCD photocuring printer, includes the casing and sets up the printing chamber in the casing, the bottom of printing the chamber is equipped with the workstation, be equipped with the LCD screen on the workstation, it has placed the resin groove to be located on the LCD screen on the workstation, it is connected with the shaping platform to print the intracavity and to lie in directly over the resin groove along vertical direction sliding, it is equipped with the light source to lie in LCD screen below in the casing, be equipped with the storage resin's storage bottle in the casing, be equipped with the feed port on the lateral wall in resin groove, be equipped with the discharge gate on the storage bottle, through material loading union coupling between discharge gate and the feed port, the material loading intraductal resin that is equipped with control material loading and opens and close and drive the material loading solenoid.

Through adopting above-mentioned technical scheme, before printing, only need open the material loading solenoid valve, the resin flows in the loading tube under the drive of material loading solenoid valve, finally flows into the resin groove, realizes the automatic feeding of resin to the automatic feeding of resin can be realized.

The utility model discloses further set up to: the bottom in resin storage tank is equipped with the discharge opening, be equipped with the feed inlet on the storage bottle, through feed back union coupling between discharge opening and the feed inlet, be equipped with the feed back solenoid valve that control feed back pipe is opened and close and the interior resin of drive feed back pipe flows towards the feed inlet in the feed back pipe.

Through adopting above-mentioned technical scheme, after printing finishes, open the feed back solenoid valve, in the feed back solenoid valve can send into the storage bottle with unnecessary resin in the resin tank to realize the recovery of unnecessary resin in the resin tank, conveniently print the reuse that can realize resin simultaneously next time, practice thrift the resin, avoid appearing extravagantly.

The utility model discloses further set up to: the top in resin groove is equipped with the overflow hole, be connected through the hyaline tube between overflow hole and the feed inlet, be equipped with the detection sensor who detects whether to have resin in the hyaline tube in the casing, detection sensor and material loading solenoid valve electricity are connected.

Through adopting above-mentioned technical scheme, after the resin in the resin groove is filled up, the resin can follow the downthehole outflow of overflow and enter into the transparent tube, after detecting sensor detects that there is the resin in the transparent tube, control material loading solenoid valve is closed, stops to feed in raw material, only need like this open the material loading solenoid valve can, realized semi-automatic material conveying, further improved printing efficiency.

The utility model discloses further set up to: the resin tank includes underframe and the material frame of depositing of setting in the underframe top, the resin tank lateral wall sets up towards the slope of LCD liquid crystal display, be equipped with the mounting that is used for fixed underframe on the workstation.

Through adopting above-mentioned technical scheme, only need fix the underframe on the workstation, can realize the installation of resin groove, easy operation, simple to operate to the resin groove is frustum form and sets up, and the lower part is bulky, and upper portion is small, can improve the stability of resin at the printing in-process, and then improves the surface smoothness of printing the product.

The utility model discloses further set up to: the workstation mounting is including the fixed briquetting that sets up the cross-section on the workstation and be the setting of L shape, the briquetting is two and relative setting, two the briquetting symmetry sets up in the underframe both sides, threaded connection has the fixing bolt that can with the underframe butt on the briquetting, the vertical setting of fixing bolt.

Through adopting above-mentioned technical scheme, during the use, the fixing bolt of screwing can compress tightly the underframe on the workstation to realize the fixed of underframe, simultaneously because the area of contact between underframe and the workstation has increased, thereby can effectively improve the leakproofness between resin groove and the workstation, avoid the resin to ooze from the bottom of resin groove.

The utility model discloses further set up to: and a heating device for heating the resin in the resin tank is arranged in the shell.

Through adopting above-mentioned technical scheme, heating device can heat the resin, avoids influencing printing because of the temperature reason, has improved the adaptability of printer.

The utility model discloses further set up to: the heating device comprises an air heater arranged in a printing cavity, an air outlet of the air heater is located in the printing cavity, and a temperature sensor used for detecting the temperature in the printing cavity and controlling the opening and closing of the air heater is arranged in the printing cavity.

Through adopting above-mentioned technical scheme, open the air heater, can blow hot-blastly to printing the intracavity to preheat the resin, also can keep warm to printing the chamber simultaneously, improve the stability of printing in-process environment, and then improve the product quality of printing. After the temperature sensor detects that the temperature in the printing cavity reaches the preset value, the air heater can be closed, and the heating of the printing cavity is stopped.

The utility model discloses further set up to: the shell is provided with a turnover cover for opening and closing the printing cavity.

By adopting the technical scheme, the resin tank can be taken out by opening the turnover cover, so that the resin tank is convenient to clean.

To sum up, the utility model discloses following beneficial effect has:

(1) by arranging the feeding electromagnetic valve, the resin flows in the feeding pipe under the driving of the feeding electromagnetic valve and finally flows into the resin tank, the resin can be automatically added into the resin tank, the printing efficiency is improved, an operator does not need to observe the allowance in the resin tank at any time, and unnecessary work input is saved; by arranging the feed back electromagnetic valve, the feed back electromagnetic valve can send redundant resin in the resin tank into the material bottle, so that the redundant resin in the resin tank is recovered, the printing is convenient for the next time, the resin can be recycled, the resin is saved, and the waste is avoided;

(2) the heating device is arranged in the shell, so that the resin can be preheated, and the printing cavity can be insulated, the stability of the environment in the printing process is improved, the quality of printed products is improved, and the adaptability of the device is improved;

(3) only need fix the underframe on the workstation, can realize the installation in resin groove, and the operation is thus simple, the high pressure heater is convenient to install, and the resin groove is frustum form setting, the lower part is bulky, upper portion is small, can improve the stability of resin at the printing in-process, and then improve the surface smoothness of printing the product, the great lower part butt of resin groove volume in the tip of underframe simultaneously, under electric telescopic handle's drive, it can contact in the less port edge in resin groove upper end to print the piece, accomplish the unloading of printing the piece at the lower extreme horizontal direction of profiled sheeting, avoid causing the damage to the profiled sheeting.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the internal structure of the printing chamber of the present invention.

Fig. 3 is a schematic view of the installation of the material bottle of the present invention.

Fig. 4 is a schematic view of the installation of the feeding pipe, the return pipe and the overflow pipe of the present invention.

Fig. 5 is a schematic view of the structure of the resin tank of the present invention.

Fig. 6 is a schematic structural view of the heating device of the present invention.

The automatic feeding device comprises a shell, a printing cavity, a flip cover, a forming platform, a motor-driven telescopic rod, a forming plate, a workbench, a Liquid Crystal Display (LCD) screen, a pressing block, a resin tank, a bottom frame, a storage frame, a material bottle, a discharge port, a feed port, a discharge port, a feed inlet, a 5-feeding pipe, a feeding electromagnetic valve, a discharge port, a discharge.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1 to 6, an LCD photocuring printer, including casing 1 and the printing chamber 11 of setting in casing 1, the bottom of printing chamber 11 is equipped with

workstation

2, 2 levels of workstation set up, the LCD LCD screen 21 that the level that is equipped with set up inlays on workstation 2, the top that lies in LCD screen 21 on workstation 2 is provided with resin groove 3, LCD screen 21 is located resin groove 3, be located resin groove 3 directly over and be equipped with forming platform 13 in printing chamber 11, forming platform 13 level sets up, as the fashioned carrier of product, forming platform 13 slides along vertical direction and sets up in printing chamber 11, the below that lies in LCD screen 21 in casing 1 is equipped with the light source, the drive mode of light source and forming platform 13 is prior art, do not do here and give unnecessary details.

In this embodiment, for the convenience to add resin in resin tank 3, be equipped with storage resin's storage bottle 4 in casing 1, be equipped with feed port 52 on the lateral wall of resin tank 3, feed port 52 is close to the top setting of resin tank 3, be equipped with discharge gate 41 on storage bottle 4, be connected through material loading pipe 5 between discharge gate 41 and the feed port 52, be equipped with the material loading solenoid valve 51 that control material loading pipe 5 opened and close in material loading pipe 5, material loading solenoid valve 51 includes water pump and solenoid valve body, water pump and solenoid valve body concatenate and move in material loading pipe 5 and synchronization, solenoid valve and water pump open the back, the resin flows in material loading pipe 5 under the drive of water pump, finally flow in resin tank 3, realize the automatic feeding of resin, only need control material loading solenoid valve 51 to open and close, can realize the automatic feeding of resin.

In this embodiment, for conveniently realizing the clearance of the resin in resin tank 3, be equipped with discharge opening 62 in the bottom of resin tank 3, be equipped with feed inlet 42 on the storage bottle 4, be connected through feed back pipe 6 between discharge opening 62 and the feed inlet 42, be equipped with feed back solenoid valve 61 in feed back pipe 6, feed back solenoid valve 61 controls opening and close of feed back pipe 6 and the flow of the interior perpendicular resin of feed back pipe 6, feed back solenoid valve 61 also includes water pump and solenoid valve body, water pump drive resin flows towards feed inlet 42, after printing finishes, open feed back solenoid valve 61, feed back solenoid valve 61 can send into storage bottle 4 with the interior unnecessary resin of resin tank 3 in, thereby realize the recovery of the interior unnecessary resin of resin tank 3, conveniently print the reuse that can realize the resin next time, and the resin is saved, waste is avoided appearing.

Further, an overflow hole 71 is provided at the top of the resin tank 3, the height of the overflow hole 71 is equal to the height of the feed hole 52, the overflow hole 71 is connected to the feed port 42 through a transparent pipe, a detection sensor for detecting whether resin is present in the transparent pipe is provided in the casing 1, and the detection sensor is electrically connected to the feed solenoid valve 51. After the resin in the resin tank 3 is filled, the resin can flow out from the overflow hole 71 and enter the transparent pipe, after the detection sensor detects that the resin exists in the transparent pipe, the feeding electromagnetic valve 51 is controlled to be closed, feeding is stopped, and therefore only the feeding electromagnetic valve 51 needs to be opened, semi-automatic feeding is achieved, and printing efficiency is further improved.

In this embodiment, the detection sensor is an infrared sensor 72, light emitted by the infrared sensor 72 is arranged toward the transparent tube, and after resin flows in the transparent tube, the light received by the infrared sensor 72 changes, so as to output a corresponding signal and control the feeding electromagnetic valve 51 to be closed.

For the installation and the dismantlement of conveniently realizing resin tank 3, resin tank 3 includes underframe 31 and sets up the material storage frame 32 in underframe 31 top, material storage frame 32's bottom surface and underframe 31 fixed connection, material storage frame 32's interior anchor ring and outer anchor ring are located underframe 31's inside and outside both sides respectively, be equipped with the mounting of fixing underframe 31 on workstation 2, resin tank 3 encloses through material storage frame 32 and establishes and form, only need fix underframe 31 on workstation 2, can realize resin tank 3's installation, and is simple in operation, and convenient for installation.

Simultaneously for the stability that improves the printing process, 3 lateral walls of resin groove incline towards LCD 21 and set up, and resin groove 3 is the frustum form like this and sets up, and the lower part is bulky, and upper portion is small, can improve the stability of resin at the printing in-process, and then improves the surface smoothness of printing the product.

Both sides that lie in underframe 31 on workstation 2 are equipped with briquetting 22, briquetting 22 is two and parallel to each other, briquetting 22's cross-section is L shape setting and two briquetting 22 set up relatively, can form one on workstation 2 like this and underframe 31 complex spout, during the installation, directly slide underframe 31 both sides into briquetting 22 below, threaded connection has fixing bolt on briquetting 22 simultaneously, the vertical setting of fixing bolt, during the use, the fixing bolt of screwing, can compress tightly underframe 31 on workstation 2, thereby realize underframe 31's fixed, simultaneously because the area of contact between underframe 31 and workstation 2 has increased, thereby can effectively improve the leakproofness between resin bath 3 and the workstation 2, avoid the resin to ooze from the bottom of resin bath 3.

In addition, discharge opening 62 sets up on underframe 31 and runs through workstation 2, can avoid appearing interfering with the LCD screen like this, reduces the influence to the printing process, and the tip of underframe 31 is the spacing setting of slope to this carries on spacingly to resin storage tank 3, makes to push away before the printing member and unloads the material and can guarantee.

In order to adapt to the printing operation under different environments, a heating device for heating the resin in the resin tank 3 is further arranged in the shell 1, the heating device can heat the resin, the influence on printing due to temperature is avoided, and the adaptability of the printer is improved.

Heating device is including setting up the air heater 8 in printing chamber 11, and air heater 8 is equipped with the heating wire including fixing the fan in casing 1 at the air intake of fan, and the air outlet of air heater 8 is located and prints chamber 11, opens air heater 8, can blow hot-blastly in printing chamber 11 to preheat the resin, also can keep warm printing chamber 11 simultaneously, improve the stability of printing the in-process environment, and then improve the product quality of printing. Be equipped with in printing chamber 11 and be used for detecting the temperature sensor 81 that the temperature was followed in printing chamber 11, temperature sensor 81 is connected with the control circuit of air-cooler, after temperature sensor 81 detected that the temperature in printing chamber 11 reaches the default, can close hot-blast blower 8 promptly, stops to print chamber 11 and heats.

For convenient clearance and maintenance, rotate on the casing 1 and be connected with the flip 12 that is used for opening and closing printing chamber 11, flip 12 top is rotated with casing 1 and is connected, opens flip 12, can take out and print piece and resin tank 3 to the convenience is cleared up resin tank 3 after printing.

The working process and principle are as follows: the utility model discloses when needs are printed, at first slide bottom frame 31 into the below of briquetting 22, screw fixing bolt, bottom frame 31's tip and the lower extreme looks butt of resin tank 3 this moment, put through material loading pipe 5 and feed port 52 afterwards, open material loading solenoid valve 51, resin flows out to resin tank 3 in from storage bottle 4, flows out from overflow hole 71 after the resin in resin tank 3 is filled up, detect sensor detect overflow pipe 7 in flow into resin after, close material loading solenoid valve 51, stop reinforced;

after printing finishes, open ejection of compact solenoid valve, ejection of compact solenoid valve is in with the resin suction feed bottle 4 again in the resin groove 3, reuse when waiting for next time to print, wait to fall a accuse a period after, start electric telescopic handle 14, its output promotes the slider, then drive the shaping plate 15 and remove, after contacting the upper end of the resin groove 3 of frustum form, make the solidification accomplish automatic discharge in the printing under shaping plate 15, open flip 12 at last and take out the printing.

Based on the above, the utility model discloses a through setting up the material loading solenoid valve, resin flows in material loading pipe 5 under the drive of material loading solenoid valve, finally flows into resin bath 3, and resin can be added into resin bath 3 automatically, has improved printing efficiency, and need not operating personnel and constantly observes the surplus in resin bath 3, has saved unnecessary work input; by arranging the material returning electromagnetic valve 61, the material returning electromagnetic valve 61 can send redundant resin in the resin tank 3 into the material bottle 4, so that the redundant resin in the resin tank 3 can be recycled, the resin can be reused while printing is convenient for the next time, the resin is saved, and waste is avoided; the heating device is arranged in the shell 1, so that the resin can be preheated, and meanwhile, the printing cavity 11 can be insulated, the stability of the environment in the printing process is improved, the quality of printed products is improved, and the adaptability of the device is improved;

only need fix underframe 31 on workstation 2, can realize the installation of resin groove 3, therefore, the steam generator is simple in operation, high durability and convenient installation, and resin groove 3 is frustum form setting, the lower part is bulky, the upper portion is small, can improve the stability of resin at the printing in-process, and then improve the surface smoothness of printing the product, the great lower part butt of 3 volumes in underframe 31 of resin groove simultaneously, under electric telescopic handle 14's drive, it can contact in the less port edge in 3 upper ends of resin groove to print the piece, accomplish the unloading of printing the piece at the lower extreme horizontal direction of profiled sheeting 15, avoid causing the damage to profiled sheeting 15.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The utility model provides a LCD photocuring printer, includes casing (1) and sets up printing chamber (11) in casing (1), the bottom of printing chamber (11) is equipped with workstation (2), be equipped with LCD screen (21) on workstation (2), resin groove (3) have been placed on lieing in LCD screen (21) on workstation (2), it is connected with forming platform (13) to slide along vertical direction directly over resin groove (3) in printing chamber (11), install electric telescopic handle (14) on forming platform (13), install forming plate (15) through the slider on forming platform (13), the output of electric telescopic handle (14) links to each other with the slider, it is equipped with light source, its characterized in that to lie in LCD screen (21) below in casing (1): the resin filling machine is characterized in that a material bottle (4) used for storing resin is arranged in the shell (1), a feeding hole (52) is formed in the side wall of the resin tank (3), a discharging hole (41) is formed in the material bottle (4), the discharging hole (41) is connected with the feeding hole (52) through a feeding pipe (5), and a feeding electromagnetic valve (51) which is used for controlling the feeding pipe (5) to be opened and closed and driving the resin in the feeding pipe (5) to flow towards the feeding hole (52) is arranged in the feeding pipe (5).

2. An LCD light curing printer as in claim 1, further comprising: the bottom of resin groove (3) is equipped with discharge opening (62), be equipped with feed inlet (42) on storage bottle (4), be connected through feed back pipe (6) between discharge opening (62) and feed inlet (42), be equipped with in feed back pipe (6) and control feed back pipe (6) and open and close and drive feed back solenoid valve (61) that resin flowed towards feed inlet (42) in feed back pipe (6).

3. An LCD light curing printer as in claim 2, further comprising: the top of resin groove (3) is equipped with overflow hole (71), be connected through the hyaline tube between overflow hole (71) and feed inlet (42), be equipped with the detection sensor who detects whether to have resin in the hyaline tube in casing (1), detection sensor and material loading solenoid valve (51) electricity are connected.

4. An LCD light curing printer as in claim 1, further comprising: resin tank (3) are including underframe (31) and set up material frame (32) of depositing in underframe (31) top, resin tank (3) lateral wall sets up towards LCD screen (21) slope, be equipped with the mounting that is used for fixed underframe (31) on workstation (2).

5. An LCD light curing printer as in claim 4, wherein: workstation (2) mounting is briquetting (22) that the L shape set up including fixed cross-section that sets up on workstation (2), briquetting (22) are two and relative setting, two briquetting (22) symmetry sets up in underframe (31) both sides, threaded connection has the fixing bolt that can with underframe (31) butt on briquetting (22), the vertical setting of fixing bolt.

6. An LCD light curing printer as in claim 1, further comprising: and a heating device for heating the resin in the resin tank (3) is arranged in the shell (1).

7. An LCD light curing printer as in claim 6, wherein: the heating device comprises an air heater (8) arranged in a printing cavity (11), an air outlet of the air heater (8) is positioned in the printing cavity (11), and a temperature sensor (81) used for detecting the temperature in the printing cavity (11) so as to control the opening and closing of the air heater (8) is arranged in the printing cavity (11).

8. An LCD light curing printer as in claim 1, further comprising: the shell (1) is provided with a turnover cover (12) for opening and closing the printing cavity (11).