Automatic liquid level adjusting and heat preservation device for photocuring 3D printing resin tank

Abstract

The utility model discloses a photocuring 3D printing resin tank liquid level automatic adjusting and heat preservation device which is characterized in that the automatic adjusting and heat preservation device comprises a liquid level automatic adjusting mechanism, the liquid level automatic adjusting mechanism comprises an inner resin tank, and the inner resin tank is arranged in an outer resin tank; a transition space is formed between the inner resin groove and the outer resin groove, the outer resin groove is fixed to a 3D printer body, and the inner resin groove and the transition space are jointly used for storing resin. The driving assembly is connected to the bottom of the inner resin tank and is used for adjusting the liquid level height of resin in the inner resin tank; through cooperative work of the automatic liquid level adjusting mechanism and the driving assembly, accurate adjustment of the height of the liquid level of the resin is achieved; the flexibility and precision of liquid level adjustment are improved, the stability of the resin liquid level in the printing process is ensured, and the printing quality is remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to 3D printing technical field, concretely is a kind of light-cured 3D printing resin tank liquid level automatic adjustment and heat preservation device. BACKGROUND

[0002] Light-cured 3D printing technology is widely used in manufacturing field with its high precision, high efficiency advantage;In the light-cured 3D printing process, resin liquid level height in resin tank needs to be kept stable to ensure printing quality and efficiency.

[0003] However, resin tank in prior art mostly adopts manual resin adding mode to adjust liquid level height, this mode is not only inefficient, and it is easy to cause unstable liquid level height, influence printing effect.In addition, resin needs to keep in certain temperature range in printing process to ensure its flow performance and solidification effect, but resin tank in prior art often lacks effective heat preservation measure, causes resin temperature fluctuation to be greater, further influence printing quality.

[0004] Therefore, a kind of light-cured 3D printing resin tank liquid level automatic adjustment and heat preservation device is needed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a kind of light-cured 3D printing resin tank liquid level automatic adjustment and heat preservation device to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of light-cured 3D printing resin tank liquid level automatic adjustment and heat preservation device, characterized in that: the automatic adjustment and heat preservation device includes liquid level automatic regulating mechanism, the liquid level automatic regulating mechanism includes inner resin tank, the inner resin tank is arranged in outer resin tank, transition space is formed between the inner resin tank and the outer resin tank, the outer resin tank is fixed on 3D printer main body, the inner resin tank and transition space are used to store resin in common;It also includes the drive assembly connected to the bottom of the inner resin tank, the drive assembly is used to adjust the liquid level height of resin in the inner resin tank.

[0008] Preferably, the liquid level automatic regulating mechanism further includes a plurality of transition channels arranged at the bottom of the inner resin tank and connected to the transition space, and a lifting plate movably arranged in the transition space and connected to the output end of the drive assembly;The lifting plate can move up and down along the transition space under the action of the drive assembly to adjust the resin liquid level in the inner resin tank through the transition channel.

[0009] Preferably, the transition channel comprises a vertical channel and two inclined channels, the vertical channel is arranged at the center of the bottom end of the inner resin tank, and the two inclined channels are symmetrically arranged on both sides of the vertical channel and respectively connected with the vertical channel and the transition space.

[0010] Preferably, the automatic adjusting and heat preserving device further comprises a heating and heat preserving assembly, the heating and heat preserving assembly comprises a heating layer and a heat preserving layer, the heating layer is arranged around the outer sidewall of the outer resin tank, and the heat preserving layer is wrapped outside the heating layer.

[0011] Preferably, the heating and heat preserving assembly further comprises a temperature sensor, the temperature sensor is arranged in the inner resin tank and used for monitoring the temperature of the resin in the inner resin tank in real time and feeding back a temperature signal to a control unit, and the control unit controls the heating power of the heating layer according to the temperature signal.

[0012] Preferably, the automatic adjusting and heat preserving device further comprises a liquid surface leveling device, the liquid surface leveling device adopts an ultrasonic vibrator arranged at the bottom of the inner resin tank, and the ultrasonic vibrator is used for eliminating the problems of bubbles and uneven surface tension of the resin liquid surface.

[0013] Preferably, the automatic adjusting and heat preserving device further comprises a liquid surface overflow protection device, the liquid surface overflow protection device comprises an overflow tank and a flow guide pipe, the overflow tank is arranged above the outer resin tank, one end of the flow guide pipe is connected to the bottom of the overflow tank, the other end of the flow guide pipe extends to the outside of the outer resin tank, and the flow guide pipe is used for guiding the overflowed resin out.

[0014] Preferably, the liquid surface overflow protection device further comprises a float switch arranged in the overflow tank, the float switch is used for detecting whether the resin overflows and sending a signal to the control unit when the resin overflows, and the control unit controls the driving assembly to stop working after receiving the signal.

[0015] Compared with the prior art, the automatic adjusting and heat preserving device has the following beneficial effects:

[0016] 1、The automatic adjusting and heat preserving device realizes the automatic adjustment of the resin liquid surface height through the cooperative work of the liquid surface automatic adjusting mechanism and the driving assembly, the driving assembly accurately controls the up-down movement of the inner resin tank through the motor, the lead screw and the nut and the like, and the accurate adjustment of the resin liquid surface height is realized in combination with the design of the transition channel, the flexibility and the precision of the liquid surface adjustment are improved, the stability of the resin liquid surface in the printing process is ensured, and the printing quality is significantly improved.

[0017] 2, the utility model discloses a heating and heat preservation subassembly through the cooperation of heating layer and heat preservation layer, realize the accurate control and efficient heat preservation of resin temperature, heating layer is set around the outside wall of outer resin tank, can heat the resin evenly, and heat preservation layer effectively reduces the heat loss, improves the heat preservation effect, saves the energy consumption. In addition, the temperature sensor monitors the resin temperature in real time, and the signal is fed back to the control unit, so that the heating power of the heating layer can be dynamically adjusted according to the actual temperature, ensure that the resin maintains constant temperature in the whole printing process, thereby guarantee the stability and consistency of printing quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the perspective structural schematic diagram of the first visual angle of the utility model;

[0019] Figure 2 It is the plan view of the utility model;

[0020] Figure 3 It is the front view cross section view of the utility model;

[0021] Figure 4 It is Figure 3 It is the local enlarged view of A;

[0022] Figure 5 It is Figure 4 It is the local enlarged view of B;

[0023] Figure 6 It is the three-dimensional schematic diagram of the utility model fixed installation in 3D printer main body.

[0024] In the drawing: 1-liquid level automatic adjusting mechanism;101-inner resin tank;102-outer resin tank;103-transition space;104-driving assembly;105-transition channel;1051-vertical channel;1052-oblique channel;2-heating and heat preservation subassembly;201-heating layer;202-heat preservation layer;203-temperature sensor;3-liquid level flattening device;301-ultrasonic vibrator;4-liquid level anti-overflow protection device;401-anti-overflow groove;402-flow guide pipe;403-float switch. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.

[0026] As Figures 1 to 6As shown, the utility model is a kind of light-cured 3D printing resin tank liquid level automatic adjustment and heat preservation device, and the automatic adjustment and heat preservation device is used to automatically keep resin tank liquid level height and keep the temperature of resin tank liquid in the process of light-cured 3D printing, to achieve the best printing effect;Therefore, the automatic adjustment and heat preservation device includes liquid level automatic regulating mechanism 1, specifically, the liquid level automatic regulating mechanism 1 includes inner resin tank 101 and outer resin tank 102, inner resin tank 101 is arranged in outer resin tank 102, and transition space 103 is formed between inner resin tank 101 and outer resin tank 102;The outer resin tank 102 of the utility model is fixed on the main body of 3D printer, and the inner resin tank 101 and transition space 103 are used for storing resin, wherein the resin in the inner resin tank 101 is used for light-cured 3D printing.

[0027] Further, in order to realize the automatic adjustment of resin liquid level, the utility model sets up driving assembly 104, specifically, the driving assembly 104 is connected to the bottom of inner resin tank 101, for adjusting the liquid level height of resin in inner resin tank 101;More specifically, the driving assembly 104 preferably adopts motor, screw and nut and other components, wherein the motor drives screw rotation, nut cooperates with screw, drives inner resin tank 101 to move up and down, to adjust the resin liquid level height.

[0028] Of course, in order to further improve the stability and precision of liquid level adjustment, the utility model sets up several transition passages 105 in the bottom of inner resin tank 101, and the transition passage 105 is communicated with transition space 103;When driving assembly 104 drives inner resin tank 101 to move up and down, the resin in transition space 103 can enter or leave inner resin tank 101 through transition passage 105, and transition passage 105 has certain buffering effect, to realize the stable adjustment of resin liquid level.

[0029] More specifically, as shown in the figure, Figure 2 And Figure 3As shown, the transition channel 105 specifically includes a vertical channel 1051 and an inclined channel 1052; wherein the vertical channel 1051 is arranged at the center of the bottom end of the inner resin tank 101, the inclined channel 1052 is symmetrically arranged on both sides of the vertical channel 1051 and respectively communicates with the vertical channel 1051 and the transition space 103, the tail of the vertical channel 1051 and the side of the inclined channel 1052 form a buffer structure, preferably, the tail of the vertical channel 1051 can be wrapped with a layer of cloth to achieve a buffering effect, and the part where the vertical channel 1051 communicates to the inner resin tank 101 can also form a buffer structure; The structure arrangement of the vertical channel 1051 and the inclined channel 1052 makes the resin flow more smoothly during the flow process, reduces the flow resistance, and also reduces the sudden flow caused by the sudden change of resistance. The sudden flow can disturb the resin liquid in the inner resin tank 101, and it takes a long time to re-still. Therefore, the transition channel 105 can improve the adjustment efficiency.

[0030] In order to ensure that the resin maintains a constant temperature during printing to ensure the printing quality, the utility model also sets up a heating and heat preservation assembly 2, as shown in Figure 3 and Figure 4 As shown, specifically, the heating and heat preservation assembly 2 includes a heating layer 201 and a heat preservation layer 202, the heating layer 201 is arranged around the outer side wall of the outer resin tank 102, for heating the resin, and further, the heat preservation layer 202 is wrapped outside the heating layer 201, for reducing heat loss, improving heat preservation effect, and saving energy consumption.

[0031] In order to further improve the intelligent level of heating and heat preservation, the utility model also sets up a temperature sensor 203 in the heating and heat preservation assembly 2, as shown in Figure 4 As shown, the temperature sensor 203 is arranged in the inner resin tank 101, for real-time monitoring of the temperature of the resin in the inner resin tank 101, and feeding back the temperature signal to the control unit, so that the control unit controls the heating power of the heating layer 201 according to the temperature signal, thereby realizing accurate control of the temperature of the resin.

[0032] In the process of photocuring 3D printing, the flatness of the resin liquid surface has an important influence on the printing quality, the better the flatness of the resin liquid surface, the higher the printing quality, therefore, in order to eliminate the problems of bubbles and uneven surface tension of the resin liquid surface, the utility model sets up a liquid surface leveling device 3, specifically, the liquid surface leveling device 3 includes an ultrasonic vibrator 301, the ultrasonic vibrator 301 is arranged at the inner bottom of the inner resin tank 101; When the ultrasonic vibrator 301 works, ultrasonic vibration waves are generated, the vibration waves act on the resin liquid surface, continuously eliminating bubbles, and balancing the surface tension, making the resin liquid tension more uniform, making the resin liquid surface more flat, and significantly improving the quality of printing.

[0033] Although the resin liquid level automatic adjustment is controlled by the program, generally, the liquid level overflow situation will not occur, however, in the resin liquid level automatic adjustment process, there is indeed a risk of resin overflow due to various reasons (such as excessive addition, liquid level adjustment mechanism failure, etc.); in order to avoid the damage to the equipment or the influence on the normal printing operation caused by the resin overflow, the liquid level overflow protection device 4 provided in the utility model plays a key role; specifically, as shown in Figure 3 and Figure 5 The liquid level overflow protection device 4 mainly consists of an overflow tank 401, a flow guide pipe 402 and a float switch 403, and further, wherein:

[0034] The overflow tank 401 is arranged above the outer resin tank 102, and the purpose is to provide an additional accommodation space for the resin, which can first flow into the overflow tank 401 when the resin accidentally overflows, thereby preventing the resin from further overflowing to other parts of the equipment or the working area. The capacity of the overflow tank 401 should be large enough to accommodate the maximum amount of resin that may overflow under normal circumstances, so as to ensure that the resin can flow smoothly and effectively reduce the risk of overflow.

[0035] The flow guide pipe 402 is connected to the bottom of the overflow tank 401 at one end and extends to the outside of the outer resin tank 102 at the other end; its role is to safely guide the excess resin outside the equipment after the resin overflows and is captured by the overflow tank 401, preventing the resin from accumulating inside the equipment and causing damage; of course, in actual use, the design of the flow guide pipe 402 should take into account the fluidity and possible solidification of the resin to ensure that the resin can be smoothly guided out without clogging the pipeline. Preferably, the end of the flow guide pipe 402 can be equipped with a collection container or a discharge port for regular cleaning and disposal of the overflowed resin.

[0036] The float switch 403 is arranged in the overflow tank 401 and is used to detect whether the resin overflows; the working principle of the float switch 403 is to detect the rise and fall of the liquid level based on the change of the buoyancy of the float; specifically, when the resin overflows and flows into the overflow tank 401, the float will rise with the rising of the liquid level, and when the float rises to a certain height, it will trigger the switch action and send a signal to the control unit. After receiving the signal, the control unit can immediately take measures such as stopping the work of the driving assembly 104 to prevent more resin from overflowing.

[0037] In summary, the liquid level overflow protection device 4 can effectively solve the problem of resin overflow through the synergistic effect of the overflow tank 401, the flow guide pipe 402 and the float switch 403. It not only improves the safety and reliability of the equipment, but also protects the normal printing operation, reduces the loss and inconvenience caused by the resin overflow.

[0038] In use, that is, in the cooperative work of the whole device of the utility model, each component is sequentially controlled by a program:

[0039] Automatic liquid level adjustment: when the resin liquid level needs to be adjusted, the control unit sends a command to the drive assembly 104, which drives the inner resin tank 101 to move up and down; at the same time, the resin in the transition space 103 enters or leaves the inner resin tank 101 through the transition channel 105, realizing accurate adjustment of the resin liquid level.

[0040] Heating and temperature maintenance: the temperature sensor 203 monitors the temperature of the resin in the inner resin tank 101 in real time and feeds back the temperature signal to the control unit, and then the control unit adjusts the heating power of the heating layer 201 according to the preset temperature range and control strategy, so as to keep the resin in a constant temperature range.

[0041] Liquid level flattening: during printing, the ultrasonic vibrator 301 works periodically or on demand, generating ultrasonic vibration waves acting on the resin liquid level to eliminate bubbles and uneven surface tension.

[0042] Liquid level overflow protection: once the resin overflows and flows into the overflow tank 401, the float switch 403 will immediately detect and send a signal to the control unit; after receiving the signal, the control unit immediately stops the work of the drive assembly 104 to prevent more resin from overflowing; at the same time, the overflowed resin is safely guided out of the device through the flow guide pipe 402.

[0043] Therefore, the utility model provides a kind of efficient, reliable photo-curing 3D printing resin tank liquid level automatic adjustment and temperature maintenance device, not only improve printing quality and efficiency, also enhance the safety and reliability of equipment.

[0044] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent substitutions for part of the technical features, and any modification, equivalent substitution, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. An automatic leveling and heat preservation device for a photopolymer 3D printing resin tank, characterized in that: The automatic adjustment and heat preservation device comprises a liquid level automatic adjusting mechanism (1), the liquid level automatic adjusting mechanism (1) comprises an inner resin tank (101), the inner resin tank (101) is arranged in an outer resin tank (102), a transition space (103) is formed between the inner resin tank (101) and the outer resin tank (102), the outer resin tank (102) is fixed on a 3D printer body, and the inner resin tank (101) and the transition space (103) are used for storing resin in common.

2. The automatic liquid level adjusting and temperature maintaining device for photocuring 3D printing resin tank according to claim 1, characterized in that: The liquid level automatic adjusting mechanism (1) further comprises a plurality of transition channels (105) arranged at the bottom of the inner resin tank (101) and connected with the transition space (103), and the bottom of the inner resin tank (101) is movably arranged in the transition space (103) and connected with the output end of the driving assembly (104); under the action of the driving assembly (104), the bottom of the inner resin tank (101) can move up and down along the transition space (103) to adjust the liquid level of the resin in the inner resin tank (101) through the transition channel (105).

3. The device according to claim 2, wherein the device is characterized in that: The transition channel (105) comprises a vertical channel (1051) and an inclined channel (1052), the vertical channel (1051) is arranged at the center position of the bottom end of the inner resin tank (101), and a pair of inclined channels (1052) are symmetrically arranged on both sides of the vertical channel (1051) and respectively connected with the vertical channel (1051) and the transition space (103). 4.The device according to claim 2 or 3, characterized in that: The automatic adjustment and heat preservation device further comprises a heating and heat preservation assembly (2), the heating and heat preservation assembly (2) comprises a heating layer (201) and a heat preservation layer (202), the heating layer (201) is arranged around the outer sidewall of the outer resin tank (102), and the heat preservation layer (202) is wrapped outside the heating layer (201).

5. The automatic liquid level adjusting and temperature maintaining device for photocuring 3D printing resin according to claim 4, characterized in that: The heating and heat preservation assembly (2) further comprises a temperature sensor (203), the temperature sensor (203) is arranged in the inner resin tank (101) and used for monitoring the temperature of the resin in the inner resin tank (101) in real time and feeding back a temperature signal to a control unit, and the control unit controls the heating power of the heating layer (201) according to the temperature signal.

6. The automatic liquid level adjusting and temperature maintaining device for photocuring 3D printing resin according to claim 5, characterized in that: The automatic adjustment and heat preservation device further comprises a liquid level flattening device (3), the liquid level flattening device (3) adopts an ultrasonic vibrator (301) arranged at the bottom of the inner resin tank (101), and the ultrasonic vibrator (301) is used for eliminating the problems of bubbles and uneven surface tension of the resin liquid level.

7. The automatic liquid level adjusting and temperature maintaining device for photocuring 3D printing resin according to claim 6, characterized in that: The automatic adjusting and heat preserving device further comprises a liquid level anti-overflow protection device (4), which comprises an anti-overflow groove (401) and a flow guide pipe (402), the anti-overflow groove (401) is arranged above the outer resin groove (102), one end of the flow guide pipe (402) is connected to the bottom of the anti-overflow groove (401), the other end of the flow guide pipe (402) extends to the outside of the outer resin groove (102), and the flow guide pipe (402) is used for guiding the overflowed resin out. 8.The device according to claim 7, wherein the device is characterized in that: The liquid level anti-overflow protection device (4) further comprises a float switch (403) arranged in the anti-overflow groove (401), the float switch (403) is used for detecting whether the resin overflows, and sending a signal to the control unit when the resin overflows, and the control unit controls the driving assembly (104) to stop working after receiving the signal.

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