Photocuring 3D printing piece resin separation device

Abstract

The utility model belongs to the technical field of 3D printing, and discloses a photocuring 3D printing piece resin separation device which comprises an equipment body, the equipment body is provided with an upper cover, the inner wall of the upper cover is provided with a plurality of air nozzles, the air nozzles blow high-pressure air to a resin model in the equipment body, and the interior of the equipment body is kept in a constant-temperature state through a temperature controller. According to the utility model, in the production environment of large-batch SLA equipment, the printed model with the support can be directly transferred into the separating device, so that the flowability of the resin is better, the resin on the finished product can be conveniently blown to the lower layer of the equipment through high-pressure gas or the resin in the gap between the surface of the finished product and the support can be quickly separated; the SLA equipment continues to print the next batch of models, the production efficiency is effectively improved, meanwhile, when the models are cleaned, the soaking and washing time is shortened, the use amount of cleaning agents is reduced, the cleaning quality is improved, energy is saved, environmental pollution is reduced, and the labor intensity of engineers is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a light-cured 3D printed part resin separation device. Background Art

[0002] 3D printing (3DP) is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis and uses metals, non-metals, medical biomaterials and other adhesive materials to construct objects by printing layer by layer under computer control.

[0003] The basic process of 3D printing includes: creating digital models - data processing - layered superposition molding - post-processing. Among them, light-curing (SLA) 3D printing technology is a process method that uses liquid photosensitive resin as a material for printing. This process method is currently the most mature, with the most stable equipment and high precision. Model manufacturing usually uses the weight of photosensitive resin materials in grams (g) to calculate the processing cost.

[0004] The working principle of SLA light-curing 3D printer is as follows: the ultraviolet laser emits an ultraviolet beam (wavelength of 355nm), which enters the galvanometer through the reflector and focusing mirror. The galvanometer performs high-speed XY scanning motion according to the instructions of the control system and the requirements of the current cross-sectional layer information, so that the beam is focused on the upper surface of the liquid photosensitive resin in the resin tank. In this layer irradiated by the ultraviolet laser beam, the liquid photosensitive resin undergoes polymerization and solidifies and adheres to the workbench to form a corresponding layer of solid cross-sectional profile. After a layer is cured, the workbench moves down a layer thickness to attach a new layer of liquid resin to the original cured surface, and then the scraper scrapes the viscous resin liquid surface flat, and then the next layer of scanning processing is carried out, and the newly cured layer is firmly bonded to the previous layer, and this cycle is repeated until the entire model is processed. Finally, the workbench drives the finished model to rise from the liquid resin to the liquid surface.

[0005] Due to the high viscosity of photosensitive resin materials and their poor fluidity in the natural environment, models with large dimensions and complex shapes often store a large amount of liquid photosensitive resin on the surface, internal hollows and dense supports. These models need to be placed in the equipment for a long time to empty the viscous resin material. If the placement time is short, the unseparated resin will be discarded together with the support, resulting in a waste of resin raw materials, reduced production efficiency and increased manufacturing costs. Summary of the invention

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a light-cured 3D printed part resin separation device, which can separate a large amount of liquid photosensitive resin stored on the surface of the printed resin model, the internal hollow part and the dense support from the finished product, thereby saving resources.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] The utility model provides a light-curing 3D printed part resin separation device, comprising a device body, an upper cover is arranged on the device body, a plurality of gas nozzles are arranged on the inner wall of the upper cover, the gas nozzles are used to spray high-pressure gas onto the finished part, a rotating handle is arranged on the device body, the rotating handle is connected to a working basket, the working basket is located inside the device body, a heating device is arranged below the device body, and the heating device is used to control the inside of the device body to be in a constant temperature state.

[0009] A further improvement of the utility model is that the air nozzle is connected to an air pipe, and the air pipe is arranged in the inner wall of the shell at the rear side of the equipment body.

[0010] A further improvement of the utility model is that an air intake pipe, a regulating valve and a pressure gauge are arranged on the equipment body, wherein one end of the air intake pipe is connected to the high-pressure air pump through a high-pressure air pipe, and the other end is connected to the air pipe, the regulating valve is connected to the high-pressure air pump, and the regulating valve adjusts the air pressure according to the high-pressure gas pressure value displayed on the pressure gauge.

[0011] A further improvement of the utility model is that a ball valve switch is arranged at the bottom of the equipment body, and a resin barrel is placed below the ball valve switch.

[0012] A further improvement of the utility model is that the rotating handle is connected to the positioning device through a rod body in the middle, the rod body passes through the front bearing, the working basket and the rear bearing, and the rear bearing is fixed on the rear side of the equipment body.

[0013] A further improvement of the utility model is that a handle is arranged on the upper cover.

[0014] A further improvement of the utility model is that one end of the heating device is connected to an electrical switch, and the other end is connected to a hot air pipe, the hot air pipe is connected to an air outlet, and the air outlet is arranged inside the device body.

[0015] A further improvement of the utility model is that a temperature controller and a time relay are arranged on the equipment body, and the temperature controller is used to control the start and stop of the heating device.

[0016] A further improvement of the utility model is that a temperature sensor is arranged inside the equipment body, and the temperature sensor is used to detect the temperature change inside the equipment body and transmit the signal to the temperature controller.

[0017] A further improvement of the utility model is that the panels around the lower side of the equipment body are in a 60±10° funnel shape.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a plurality of air nozzles on the inner wall of the upper cover of the equipment body, and the air nozzles blow high-pressure gas to the resin model in the working basket of the equipment body, and control the interior of the equipment body to be in a constant temperature state through a heating device, so that the fluidity of the resin is better, and it is convenient to blow the resin on the finished part to the lower layer of the equipment through the high-pressure gas or to quickly separate the surface of the finished part from the resin in the support gap. After the model is printed, the device can directly transfer the model with support to the separation device for resin separation, which can effectively improve production efficiency, reduce waste of resin materials, and reduce costs. At the same time, when cleaning the model, the immersion and rinsing time and the use of cleaning agent are reduced, the cleaning quality is improved, energy is saved, environmental pollution is reduced, and the labor intensity of engineers is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a front view of the light-cured 3D printed part resin separation device of the utility model;

[0021] Figure 2 It is an enlarged structural diagram of the rotating handle and the positioning device of the utility model;

[0022] Figure 3 This is an enlarged structural diagram of the connecting rod and the front bearing of the utility model;

[0023] Figure 4 This is an enlarged structural diagram of the connecting rod and the rear bearing of the utility model;

[0024] Figure 5 It is an enlarged structural diagram of the regulating valve and the pressure gauge of the utility model.

[0025] Among them, 1. upper cover; 2. air inlet duct; 3. working basket; 4. rotating handle; 5. heating device; 6. hot air duct; 7. air outlet; 8. handle; 9. temperature sensor; 10. temperature controller; 11. time relay; 12. electrical switch; 13. resin barrel; 14. ball valve switch; 15. air nozzle; 16. positioning device; 17. regulating valve; 18. pressure gauge; 19. air pipe; 20. rod body; 21. front bearing; 22. rear bearing. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but it should not be understood that the above subject matter of the present invention is limited to the following embodiments. Without departing from the above technical ideas of the present invention, various substitutions and changes are made according to common technical knowledge and conventional means in the field, which should all be included in the protection scope of the present invention.

[0027] See also Figure 1-5The device for separating resin from a photocurable 3D printed part comprises an upper cover 1, an air inlet duct 2, a working basket 3, a rotating handle 4, a heating device 5, a hot air duct 6, an air outlet 7, a handle 8, a temperature sensor 9, a temperature controller 10, a time relay 11, an electrical switch 12, a resin barrel 13, a ball valve switch 14, an air nozzle 15, a positioning device 16, a regulating valve 17, a barometer 18, an air pipe 19, a rod body 20, a front bearing 21 and a rear bearing 22;

[0028] The equipment body is provided with an upper cover 1, a regulating valve 17 and a pressure gauge 18, a handle 8 is provided on the upper cover 1, and a plurality of air nozzles 15 are provided on the inner wall of the upper cover 1, the air nozzle 15 is connected to an air pipe 19, the air pipe 19 is provided in the inner wall of the rear shell of the equipment, the air pipe 19 is connected to an air intake pipe 2, the air intake pipe 2 is connected to a high-pressure air pump through a high-pressure air pipe, the regulating valve 17 is connected to the high-pressure air pump, the regulating valve 17 adjusts the air pressure according to the high-pressure gas pressure value displayed by the pressure gauge 18, by rotating the fine-tuning knob on the regulating valve 17 and observing the pressure gauge 18, the air pressure is adjusted to about 0.5-0.8Mpa, the high-pressure gas enters the air nozzle 15 from the air pipe 19 in the inner wall of the shell on the rear side of the equipment, and then is ejected onto the finished product;

[0029] A working basket 3 is arranged inside the equipment body, and the working basket 3 is connected to a rotating handle 4. The rotating handle 4 is connected to the positioning device 16 through a rod body 20 in the middle. The rod body 20 passes through a front bearing 21, a working basket 3 and a rear bearing 22. The rear bearing 22 is fixed to the rear side of the equipment body. The working basket 3 adjusts the positioning device 16 to position A by rotating the handle 4. At this time, the workpiece basket 3 tilts 45° to one side, and the airflow blows the resin on this surface of the finished part to the lower layer of the equipment. After waiting for 5 minutes, the positioning device 16 is adjusted to position B. At this time, the workpiece basket 3 rotates 90° in the opposite direction and tilts to the other side. This process can quickly separate the resin on the surface of the finished part and the gap between the supports, especially the finished part with a step cavity inside can effectively discharge the resin in the cavity during the rotation process;

[0030] A heating device 5 is provided below the device body, one end of the heating device 5 is connected to an electrical switch 12, and the other end is connected to a hot air pipe 6, the hot air pipe 6 is connected to an air outlet 7, and the air outlet 7 is provided inside the device body;

[0031] The device body is provided with a temperature controller 10 and a time relay 11. The working time of the separation device is set to 10-15 minutes through the time relay 11, and the working temperature of the separation device is set to 20-25°C through the temperature controller 10. The temperature controller 10 is used to control the start and stop of the heating device 5.

[0032] A temperature sensor 9 is provided inside the device body, and the temperature sensor 9 is used to detect the temperature change inside the device body and transmit the signal to the temperature controller 10;

[0033] The panels around the lower side of the equipment body are in a 60±10° funnel shape to facilitate the resin to flow to the outlet at the bottom;

[0034] A ball valve switch 14 is provided at the bottom of the device body, and a resin barrel 13 is placed below the ball valve switch 14. When the device is turned off, the ball valve switch 14 at the bottom of the device is opened to release the resin into the resin barrel 13, and the recovered resin material is poured into the resin tank of the device to continue printing.

[0035] Working principle:

[0036] First, grab the handle 8, open the upper cover 1 of the equipment upwards, put the finished parts with support into the working basket 3, close the upper cover 1, turn on the power, turn on the electrical switch 12, set the time relay 11 to 10-15min, set the temperature controller 10 to 20-25℃, start the heating device 5 on the electrical switch 12 panel, and the hot air enters the inside of the equipment body from the air outlet 7 through the hot air pipe 6. The temperature sensor 9 detects the temperature change inside the equipment body and transmits the signal to the temperature controller 10. The temperature controller 10 controls the start and stop of the heating device 5 according to the set 20-25℃ to ensure that the inside of the equipment body is in a constant temperature state and the fluidity of the resin is good; turn on the high-pressure air pump equipment, connect the high-pressure air pipe to the equipment air inlet pipe 2, and adjust the air pressure to about 0.5-0.8Mpa by rotating the fine-tuning knob on the regulating valve 17 and observing the barometer 18. The high-pressure gas enters the air nozzle 15 from the air pipe 19 in the inner wall of the rear shell of the equipment and then sprays out. Spray onto the finished part; adjust the positioning device 16 to position A by rotating the handle 4. At this time, the working basket 3 is tilted 45° to one side, and the airflow blows the resin on this surface of the finished part to the lower layer of the equipment. The board surface around the lower side of the equipment is 60±10° funnel-shaped to facilitate the resin to flow to the bottom outlet. After waiting for 5 minutes, adjust the positioning device 16 to position B. At this time, the working basket 3 rotates 90° in the opposite direction and tilts to the other side. This process can quickly separate the surface of the finished part and the resin in the gap of the support, especially the finished part with a step cavity inside can effectively discharge the resin in the cavity during the rotation process. After 10 minutes, the time relay 11 controls the equipment to turn off the main power of the equipment, turn off the air intake switch on the regulating valve 17, open the upper cover, take out the finished part, close the upper cover 1, perform post-processing, open the ball valve switch 14 at the bottom of the equipment, release the resin into the resin barrel 13, pour the recovered resin material into the resin tank of the equipment, and continue printing.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field can still modify or replace the specific implementation methods of the present invention. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the claims of the present invention to be approved.

Claims

1. A light-cured 3D printed part resin separation device, characterized in that: The device comprises an equipment body, wherein an upper cover (1) is provided on the equipment body, a plurality of gas nozzles (15) are provided on the inner wall of the upper cover (1), the gas nozzles (15) are used to spray high-pressure gas onto the finished product, a rotating handle (4) is provided on the equipment body, the rotating handle (4) is connected to a working basket (3), the working basket (3) is located inside the equipment body, and a heating device (5) is provided below the equipment body, the heating device (5) is used to control the inside of the equipment body to be in a constant temperature state.

2. A light-cured 3D printed part resin separation device according to claim 1, characterized in that: The air nozzle (15) is connected to an air pipe (19), and the air pipe (19) is arranged in the inner wall of the shell at the rear side of the device body.

3. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: An air intake pipe (2), a regulating valve (17) and a pressure gauge (18) are arranged on the device body, wherein one end of the air intake pipe (2) is connected to a high-pressure air pump via a high-pressure air pipe, and the other end is connected to an air pipe (19); the regulating valve (17) is connected to the high-pressure air pump, and the regulating valve (17) regulates the air pressure according to the high-pressure gas pressure value displayed by the pressure gauge (18).

4. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: A ball valve switch (14) is arranged at the bottom of the equipment body, and a resin barrel (13) is placed below the ball valve switch (14).

5. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: The rotating handle (4) is connected to the positioning device (16) through a middle rod body (20), and the rod body (20) passes through a front bearing (21), a working basket (3) and a rear bearing (22), and the rear bearing (22) is fixed on the rear side of the device body.

6. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: A handle (8) is provided on the upper cover (1).

7. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: One end of the heating device (5) is connected to an electrical switch (12), and the other end is connected to a hot air pipe (6); the hot air pipe (6) is connected to an air outlet (7), and the air outlet (7) is arranged inside the device body.

8. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: A temperature controller (10) and a time relay (11) are arranged on the equipment body, and the temperature controller (10) is used to control the start and stop of the heating device (5).

9. The device for separating resin of a light-cured 3D printed part according to claim 8, characterized in that: A temperature sensor (9) is arranged inside the device body, and the temperature sensor (9) is used to detect temperature changes inside the device body and transmit signals to a temperature controller (10).

10. The device for separating resin of a light-cured 3D printed part according to claim 1, characterized in that: The panels around the lower side of the equipment body are in a 60±10° funnel shape.

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