CN111300815A - Feeding device and three-dimensional printer - Google Patents

Abstract

The present application relates to the technical field of printers, and in particular, to a feeding device and a three-dimensional printer. A feeding device includes a material storage tank, an air inlet pipe and a material discharge pipe; the material storage tank is placed above the material tray of the three-dimensional printer; The bottom surface is at a predetermined distance, and the outlet end of the intake pipe is located in the storage tank and above the liquid level of the material; the feed end of the discharge pipe is located in the liquid level of the material in the storage tank, and the discharge end of the discharge pipe is used for Add material to the tray. When the liquid level of the material in the tray is less than the preset liquid level H, the interior of the storage tank is connected to the atmosphere, and the material in the storage tank flows into the tray from the discharge pipe through its own gravity. When the liquid level of the material in the tray reaches the preset liquid level H, the intake end of the intake pipe is blocked by the material, the interior of the storage tank is not connected to the atmosphere, and the photosensitive resin in the storage tank is in a state of equilibrium, no Refill.

Description

Feeding device and 3D printer

technical field

The present application relates to the technical field of printers, and in particular, to a feeding device and a three-dimensional printer.

Background technique

In the light-curing 3D printer, the material tray is used to store the photosensitive resin. During the printing process, the light-curing 3D printer uses a high-resolution ultraviolet light source to project the cross-section of the 3D model on the workbench, so that the photosensitive resin is light-cured layer by layer. Since the photosensitive resin will be continuously cured into a solid print, it is necessary to add the photosensitive resin to the tray several times during the printing process.

Most of the existing methods use artificial supplementation of photosensitive resin, but this method has low work efficiency and cannot meet the needs of modern equipment.

SUMMARY OF THE INVENTION

The purpose of the present application is to provide a feeding device and a three-dimensional printer, which solve the technical problem of low feeding efficiency of the three-dimensional printer in the prior art to a certain extent.

The present application provides a feeding device for a three-dimensional printer, including a storage tank, an air inlet pipe and a discharge pipe; the storage tank is used to store materials, and the storage tank is placed on a tray of the three-dimensional printer above;

The air intake end of the air intake pipe is located outside the material storage tank and is at a predetermined distance from the bottom surface of the material tray of the three-dimensional printer, and the air outlet end of the air intake pipe is located in the material storage tank and is located at the bottom of the material. above the liquid level;

The feeding end of the discharging pipe is located in the liquid level of the material in the storage tank, and the discharging end of the discharging pipe is used for adding the material to the feeding tray.

In the above technical solution, further, the discharge pipe is provided with a flow regulating component and a flow meter;

The flow regulating component is used for regulating the flow rate of the material flowing out from the discharge end, and the flow meter is used for detecting the flow rate of the material flowing out from the material discharge end.

In the above technical solution, further, a residual quantity detection component is provided on the storage tank, and the residual quantity detection component is used to detect the residual quantity of the material in the storage tank.

In the above technical solution, further, a material storage space is formed in the material storage tank, and the material storage space is used to store the material;

An annular space is formed around the material storage space, and a heating element is arranged in the annular space, and the heating element is used for heating the material in the material storage space.

In the above technical solution, it further includes a mixer, and the storage tank is provided with a plurality of;

There are a plurality of the air inlet pipes, and the plurality of the air inlet pipes are in one-to-one correspondence with the plurality of the material storage tanks; The storage tanks are in one-to-one correspondence;

A plurality of the material storage tanks respectively have the material discharge pipes, and the plurality of the material discharge pipes are communicated with the mixer, and the mixer is used for mixing the materials flowing out from the plurality of the material storage tanks , and discharge the mixed materials to the tray.

In the above technical solution, further, an end cover is provided on the storage tank.

The present application further provides a three-dimensional printer, comprising a casing, a support frame disposed on the casing, a material tray disposed in the casing, and the above-mentioned feeding device disposed on the support frame;

The support frame is provided with a turntable and a drive member for driving the turntable to rotate, a first adsorption member is provided on the turntable, a second adsorption member is correspondingly arranged in the storage tank, and the first adsorption member is connected with the first adsorption member. The second adsorption parts can adsorb each other, and when the driving part drives the turntable and the first adsorption part to rotate, the second adsorption parts can rotate in the storage tank to stir the storage tank. material in the tank.

In the above technical solution, further, an intake pipe sealing assembly is provided on the intake end of the intake pipe;

The air intake pipe sealing assembly includes a first elastic member, a first sealing member and an air intake blocking member; a first insertion hole is arranged on the support frame, and the air intake end of the air inlet pipe passes through the first insertion hole and extending to the outside of the support frame, the intake blocking member is arranged at the intake end of the intake pipe, and an intake hole is provided on the intake pipe close to the intake blocking member;

The first elastic member and the first sealing member are located on the inner side of the support frame, and the first sealing member is used to block the air inlet hole of the air inlet pipe, and the first elastic member abuts against between the storage tank and the first seal;

When the first elastic member is compressed to a first predetermined length, the air inlet hole of the air inlet pipe extends out of the support frame and is separated from the first sealing member, so as to realize ventilation.

In the above technical solution, further, a discharge pipe sealing assembly is provided on the discharge end of the discharge pipe;

The air intake pipe sealing assembly includes a second elastic member, a second sealing member and a discharge blocking member; the support frame is provided with a second insertion hole, and the discharge end of the discharge pipe passes through the second insertion hole. The hole extends to the outside of the support frame, the discharge blocking member is arranged at the discharge end of the discharge pipe, and the discharge pipe close to the discharge blocking member is provided with a discharge hole;

The second elastic member and the second sealing member are located on the inner side of the support frame, and the second sealing member is used to block the discharge hole of the discharge pipe, and the second elastic member abuts between the storage tank and the first discharge seal;

When the second elastic member is compressed to a second predetermined length, the discharge hole of the discharge pipe extends out of the support frame and is separated from the second sealing member, so as to realize ventilation.

In the above technical solution, further, it further includes a fixing member, the fixing member is disposed in the material tray, and the fixing member is used for fixing the air inlet pipe and the discharge pipe;

The fixing member is provided with an air inlet hole and a discharge hole; the air inlet hole is communicated with the air inlet end, and the discharge hole is communicated with the discharge end.

Compared with the prior art, the beneficial effects of the present application are:

The application provides a feeding device for a three-dimensional printer, including a material storage tank, an air inlet pipe and a material discharge pipe; the material storage tank is used for storing materials, and the material storage tank is placed above a material tray of the three-dimensional printer ; The air inlet end of the air inlet pipe is located outside the storage tank and is at a predetermined distance from the bottom surface of the material tray of the three-dimensional printer, and the air outlet end of the air inlet pipe is located in the storage tank and is located in the material The feed end of the discharge pipe is located in the liquid level of the material in the storage tank, and the discharge end of the discharge pipe is used to add the material to the material tray.

Specifically, the discharge pipe and the intake pipe are aligned with the material tray, the discharge pipe is used to transport the photosensitive resin, and the intake pipe is used to communicate the interior of the storage tank with the atmosphere. Specifically, the outlet end of the intake pipe is located inside the storage tank. The position is higher than the liquid level of the photosensitive resin in the storage tank. In other words, the air outlet end of the air inlet pipe cannot be immersed in the photosensitive resin liquid. In addition, the distance between the air inlet end of the air inlet pipe and the bottom surface of the material tray can be adjusted according to the inner surface of the material tray. The desired liquid level setting, in other words, the preset liquid level H in FIG. 1 determines the storage volume of the photosensitive resin in the tray.

More specifically, when the liquid level height of the photosensitive resin in the material tray is less than the preset liquid level height H (that is, the first predetermined distance), the interior of the storage tank is communicated with the atmosphere, and the photosensitive resin in the storage tank acts by its own gravity. , flow into the tray from the discharge pipe. When the liquid level of the photosensitive resin in the tray reaches the preset liquid level H, the air inlet end of the air intake pipe is blocked by the photosensitive resin, and the interior of the storage tank is not connected to the atmosphere, so the interior of the storage tank will be in a state of balance in the end. , the photosensitive resin in the tray is supplied to the 3D printer. As the photosensitive resin is gradually supplied to the 3D printer, the photosensitive resin in the tray gradually decreases. When the liquid level of the photosensitive resin in the tray is less than the preset liquid level height When H, through the air inlet pipe, the storage tank is connected to the atmosphere again, and the photosensitive resin in the storage tank is acted by its own gravity, so that the photosensitive resin flows from the discharge pipe into the material tray, and the whole process automatically circulates.

The application also provides a three-dimensional printer, including a casing, a support frame disposed on the casing, and the above-mentioned feeding device disposed on the support frame. Based on the above analysis, it can be seen that the three-dimensional printer has a simple structure and works efficiently high.

Description of drawings

In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the specific embodiments or the prior art will be briefly introduced below. The drawings are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

Fig. 1 is the first structural schematic diagram of the feeding device provided in the first embodiment of the application;

Fig. 2 is the second structural schematic diagram of the feeding device provided in the first embodiment of the application;

3 is a schematic structural diagram of a feeding device provided in Embodiment 2 of the present application;

4 is a first structural schematic diagram of a feeding device provided with a heating assembly provided in Embodiment 3 of the present application;

5 is a schematic structural diagram of a stirring assembly provided in the feeding device provided in Embodiment 4 of the present application;

6 is a first structural schematic diagram when there are multiple storage tanks in the feeding device provided in Embodiment 5 of the present application;

7 is a schematic diagram of the second structure when there are multiple storage tanks in the feeding device provided in Embodiment 5 of the present application;

8 is a schematic diagram of a second structure provided with a heating assembly in the feeding device provided in Embodiment 3 of the present application;

9 is a front view of the three-dimensional printer provided in Embodiment 6 of the present application;

10 is a schematic structural diagram of a support frame of a three-dimensional printer according to Embodiment 6 of the present application;

11 is another schematic structural diagram of the three-dimensional printer provided in Embodiment 6 of the application including a support frame;

12 is a first structural schematic diagram of the feeding device of the three-dimensional printer provided in the sixth embodiment of the application with the discharge sealing assembly and the air intake pipe sealing assembly;

13 is a schematic diagram of a second structure in which the feeding device of the three-dimensional printer provided in the sixth embodiment of the application is provided with a discharge sealing assembly and an air intake pipe sealing assembly;

FIG. 14 is a schematic structural diagram of a three-dimensional printer provided with a fixing member according to Embodiment 6 of the present application.

In the picture: 100 - storage tank; 101 - intake pipe; 102 - discharge pipe; 103 - material tray; 104 - flow adjustment component; 105 - flow meter; 106 - intake end; Material end; 109-discharge end; 110-remaining detection component; 111-stock space; 112-annular space; 113-heating component; 114-mixer; 115-end cover; 116-shell; 117- 118-turntable; 119-driving part; 120-first adsorption part; 121-second adsorption part; 122-stirring assembly; 123-second elastic part; 124-second sealing part; 125-discharge blocking 126-discharge hole; 127-first elastic piece; 128-first sealing piece; 129-intake blocking piece; 130-fixing piece; 131-inlet hole.

Detailed ways

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In the description of this application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limitations on this application. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

Example 1

A feeding device provided in this application is used in a three-dimensional printer, and includes a material storage tank 100, an air inlet pipe 101 and a material discharge pipe 102; the material storage tank 100 is used for storing materials, and the material storage tank 100 is placed in the Above the material tray 103 of the 3D printer; the air inlet end 106 of the air inlet pipe 101 is located outside the material storage tank 100 and is a first preset distance from the bottom surface of the material tray 103 of the 3D printer, and the air inlet end 106 of the air inlet pipe 101 The gas outlet end 107 is located in the storage tank 100 and above the liquid level of the material; the feed end 108 of the material discharge pipe 102 is located in the liquid level of the material in the storage tank 100, so The discharging end 109 of the discharging pipe 102 is used for adding materials to the feeding tray 103 .

Considering that the present application provides materials for a three-dimensional printer, that is, in this embodiment and the following embodiments, the material is photosensitive resin as an example for description.

Referring to FIG. 1 , a part of the intake pipe 101 is placed in the storage tank 100 , and the intake end 106 of the intake pipe 101 is located outside the storage tank 100 and is far from the material tray of the three-dimensional printer. 103 is a first preset distance from the bottom surface, and the air outlet end 107 of the air inlet pipe 101 is located in the storage tank 100 and above the liquid level of the photosensitive resin.

As shown in FIG. 2 , a part of the intake pipe 101 is placed outside the storage tank 100 , and the intake end 106 of the intake pipe 101 is located outside the storage tank 100 , and is the first preset distance from the bottom surface of the tray 103 of the three-dimensional printer. Given the distance, the air outlet end 107 of the air inlet pipe 101 is located in the storage tank 100 and above the liquid level of the photosensitive resin.

In actual use, the discharge pipe 102 and the intake pipe 101 are aligned with the material tray 103, the discharge pipe 102 is used to transport the photosensitive resin, and the intake pipe 101 is used to communicate the interior of the storage tank 100 with the atmosphere. The position of the air inlet end 106 of the air pipe 101 inside the storage tank 100 is higher than the liquid level of the photosensitive resin in the storage tank 100. In other words, the air outlet end 107 of the air inlet pipe 101 cannot be immersed in the photosensitive resin liquid. , the distance between the intake end 106 of the intake pipe 101 and the bottom surface of the tray 103 can be set according to the required liquid level height in the tray 103 , in other words, the preset liquid level H in FIG. 1 determines the photosensitive resin in the tray 103 of storage.

More specifically, when the liquid level height of the photosensitive resin in the material tray 103 is less than the preset liquid level height H (that is, the first predetermined distance), the interior of the storage tank 100 is communicated with the atmosphere, and the photosensitive resin in the storage tank 100 passes through. Under the action of its own gravity, it flows into the material tray 103 from the discharge pipe 102 . When the liquid level of the photosensitive resin in the tray 103 reaches the preset liquid level H, the intake end 106 of the intake pipe 101 is blocked by the photosensitive resin, and the interior of the storage tank 100 is not communicated with the atmosphere, so the final storage tank 100 The photosensitive resin inside will be in an equilibrium state, that is, it is equivalent to not feeding the feeding tray 103 . As the photosensitive resin in the tray 103 is supplied to the 3D printer, and the photosensitive resin is gradually supplied to the 3D printer, the photosensitive resin in the tray 103 gradually decreases. When the liquid level of the photosensitive resin in the tray 103 is smaller than the preset height When the liquid level is H, the storage tank 100 is connected to the atmosphere again through the air inlet pipe 101, and the photosensitive resin in the storage tank 100 continues to flow into the tray 103 from the discharge pipe 102 through its own gravity, thereby realizing the automatic operation of the three-dimensional printer. Cyclic feeding.

Embodiment 2

The second embodiment is an improvement on the basis of the foregoing embodiment, and the technical contents disclosed in the foregoing embodiment are not described repeatedly, and the content disclosed in the foregoing embodiment also belongs to the content disclosed in the second embodiment.

Referring to FIG. 3 , the discharge pipe 102 is provided with a flow regulating component 104 and a flow meter 105 . The flow meter 105 is used to detect the flow of the material flowing out of the discharge end 109 .

Specifically, the discharge pipe 102 is provided with a flow adjustment component 104 for controlling the flow of the discharge pipe 102. The flow adjustment component 104 may be electronically controlled or manually controlled. Preferably, the flow adjustment component 104 For the regulating valve, more preferably, the regulating valve is AirTAC's PSA series manual regulating valve.

More specifically, the discharge pipe 102 is also provided with a flow meter 105 for detecting the outflow of the photosensitive resin from the discharge pipe 102. When the photosensitive resin flows out too much, the data detected by the flow meter 105 is used to control the flow rate of the flow control valve. Opening and closing.

In this embodiment, the storage tank 100 is provided with a residual quantity detection component 110 , and the residual quantity detection component 110 is used to detect the residual quantity of the material in the storage tank 100 .

Preferably, the residual detection component 110 is a pressure sensor. More preferably, the pressure sensor is arranged at the bottom of the storage tank 100 , and the storage tank 100 is determined by detecting the pressure on the bottom of the storage tank 100 . The remaining weight of the photosensitive resin in the middle, so as to know the remaining amount of the photosensitive resin.

Preferably, the residual detection component 110 is a photoelectric sensor. More preferably, the photoelectric sensor is arranged at the bottom of the storage tank 100 , and the transmitter on the photoelectric sensor is aligned with the photosensitive resin in the storage tank 100 . The liquid level emits a light beam, and the receiver on the photoelectric sensor is used to receive the electrical signal of the liquid level, that is, the photoelectric sensor can convert the light signal into an electrical signal; the photoelectric sensor is used to detect the liquid level of the photosensitive resin in the storage tank 100, and then judge the storage The remaining amount of the photosensitive resin in the tank 100.

Preferably, the residual detection component 110 includes a floating block (the floating block floats on the liquid surface of the material in the storage tank 100 ) and a position sensor for detecting the position of the floating block.

In this embodiment, the storage tank 100 is provided with an end cap 115. In actual use, the flow adjustment component 104, the flow meter 105 and the residual detection component 110 can be used together to determine more accurately. The remaining amount of photosensitive resin in the storage tank 100 , when it is determined that the remaining photosensitive resin in the storage tank 100 is too small, the user can open the end cover 115 and then replenish the photosensitive resin into the storage tank 100 . In addition, when the photosensitive resin flows into the air intake pipe 101, the air intake pipe 101 will be blocked, so that the photosensitive resin cannot flow out. By opening the end cover 115, the air pressure inside and outside the storage tank 100 is balanced, so that the photosensitive resin in the air intake pipe 101 flows out.

Embodiment 3

The third embodiment is an improvement on the basis of the above-mentioned embodiments, and the technical contents disclosed in the above-mentioned embodiments are not described repeatedly, and the contents disclosed in the above-mentioned embodiments also belong to the contents disclosed in the third embodiment.

The material in this application is photosensitive resin. Considering the poor fluidity of the photosensitive resin, in order to promote the fluidity of the photosensitive resin and prevent clogging of the discharge end 109 of the discharge pipe 102, the present application also includes a heating component.

Specifically, as shown in FIG. 4 and FIG. 8 , a material storage space 111 is formed in the material storage tank 100 , and the material storage space 111 is used to store the material; an annular gap is formed around the material storage space 111 space 112, a heating element 113 is arranged in the annular space 112, the heating element 113 is used to heat the material in the material storage space 111, and the fluidity of the photosensitive resin is improved by controlling the temperature of the photosensitive resin, In turn, the fluidity of the photosensitive resin is accelerated.

Specifically, the heating component 113 is a heating resistor.

Embodiment 4

The fourth embodiment is an improvement on the basis of the above-mentioned embodiments, and the technical contents disclosed in the above-mentioned embodiments are not described repeatedly, and the contents disclosed in the above-mentioned embodiments also belong to the contents disclosed in the fourth embodiment.

As shown in FIG. 5 , in order to further promote the fluidity of the photosensitive resin and prevent the discharge end 109 of the discharge pipe 102 from being blocked, that is, the present application is provided with a stirring assembly 122 in the storage tank 100 , and the stirring assembly 122 is used for the storage tank 122 . The material in the material tank 100 is stirred, thereby preventing the discharge end 109 of the discharge pipe 102 from being blocked.

More specifically, the stirring assembly 122 includes a stirring paddle, a first gear, a second gear and a motor, the stirring paddle is arranged in the storage tank, and the motor, the first gear and the second gear are all arranged in the storage tank 100; the output shaft of the motor is sleeved with a first gear, the fixed shaft of the stirring paddle is sleeved with a second gear, the first gear is meshed with the second gear, and when the motor is started, the first gear is used to connect with the second gear. The meshing action between the two gears can realize the stirring of the stirring paddle in the storage tank 100 , thereby preventing the discharging end 109 of the discharging pipe 102 from being blocked.

Embodiment 5

The fifth embodiment is an improvement on the basis of the above-mentioned embodiments, and the technical contents disclosed in the above-mentioned embodiments are not described repeatedly, and the contents disclosed in the above-mentioned embodiments also belong to the contents disclosed in the fifth embodiment.

In order to further improve the working efficiency of the feeding device in the present application and shorten the working time, the following two connection modes are provided in this embodiment.

The first way: as shown in FIG. 6 , there are multiple storage tanks 100 , the multiple storage tanks 100 can be respectively filled with different materials, and there are multiple intake pipes 101 , and there are multiple Each of the intake pipes 101 corresponds to a plurality of the storage tanks 100 one-to-one; a plurality of the storage tanks 100 have the discharge pipes 102 respectively, and then the mixer 114 is used to align the discharge pipes from the plurality of the discharge pipes The material flowing out of 102 is mixed, which not only improves the work efficiency but also makes the final material more uniform.

The second way: as shown in FIG. 7 , there are multiple storage tanks 100 , the multiple storage tanks 100 can be filled with different materials respectively, and the air inlet pipe 101 has multiple air outlet ends 107 ; And the plurality of the gas outlet ends 107 correspond to the plurality of the material storage tanks 100 one-to-one, that is to say, one air inlet pipe 101 is used to communicate with the plurality of the material storage tanks 100 respectively, and the plurality of the material storage tanks 100 are respectively connected. With the discharge pipe 102, the mixer 114 is used to mix the materials flowing out from the plurality of discharge pipes 102, and the mixed materials are discharged to the material tray 103, which not only improves the work efficiency but also It also makes the final material more uniform.

Embodiment 6

The sixth embodiment is an improvement on the basis of the above-mentioned embodiments. The technical contents disclosed in the above-mentioned embodiments are not described repeatedly, and the contents disclosed in the above-mentioned embodiments also belong to the contents disclosed in the sixth embodiment.

With reference to FIGS. 9-11 , the present application further provides a three-dimensional printer, including a housing 116 , a support frame 117 arranged on the housing 116 , and a feeding device arranged on the support frame 117 ;

The support frame 117 is provided with a turntable 118 and a driving member 119 for driving the turntable 118 to rotate. The turntable 118 is provided with a first adsorption member 120 , and the storage tank 100 is provided with a second adsorption member 121 . The first suction member 120 and the second suction member 121 can be attracted to each other. When the driving member 119 drives the turntable 118 and the first suction member 120 to rotate, the second suction member 121 is located there. The storage tank 100 is rotated inside to stir the storage tank 100 .

Preferably, the driving member 119 is a motor.

In the actual use process, the feeding device is fixed on the support frame 117, and the first adsorption member 120 on the turntable 118 and the second adsorption member 121 in the storage tank 100 can be adsorbed to each other; start the motor to drive the turntable 118 to rotate, The first adsorption member 120 drives the second adsorption member 121 to rotate in the storage tank 100 , so that the storage tank 100 can be stirred.

Preferably, the adsorption method between the first adsorption member 120 and the second adsorption member 121 may be a magnetic adsorption method, that is, the first adsorption member 120 or the second adsorption member 121 can be selected as a magnet.

Embodiment 7

The seventh embodiment is an improvement on the basis of the above embodiments. The technical contents disclosed in the above embodiments are not described repeatedly, and the contents disclosed in the above embodiments also belong to the contents disclosed in the seventh embodiment.

12 and 13, in order to control the outflow of the photosensitive resin conveniently and improve the portability of the storage tank 100, the air intake end 106 of the air intake pipe 101 is provided with an air intake pipe sealing assembly; the air intake pipe The sealing assembly includes a first elastic member 127, a first sealing member 128 and an intake blocking member 129; the support frame 117 is provided with a first insertion hole, and the intake end 106 of the intake pipe 101 passes through the first The insertion hole extends to the outside of the support frame 117 . The intake blocking member 129 is disposed on the intake end 106 of the intake pipe 101 , and is disposed on the intake pipe 101 close to the intake blocking member 129 . There are air intake holes 131;

The first elastic member 127 and the first sealing member 128 are located on the inner side of the support frame, and the first sealing member 128 is used to block the air intake hole 131 of the air intake pipe. The member 127 abuts between the storage tank 100 and the first sealing member 128;

When the first elastic member 127 is compressed to a first predetermined length, the air inlet hole 131 of the air inlet pipe 101 extends out of the support frame 117 and is separated from the first sealing member 128 to realize ventilation.

Specifically, the discharge end 109 of the discharge pipe 102 is provided with a discharge pipe sealing assembly; the intake pipe sealing assembly includes a second elastic member 123, a second sealing member 124 and a discharge blocking member 125; the The support frame 117 is provided with a second insertion hole, and the discharge end 109 of the discharge pipe 102 passes through the second insertion hole and extends to the outside of the support frame 117 , and the discharge blocking member 125 is provided at the The discharge end 109 of the discharge pipe 102 and the discharge pipe close to the discharge stopper 125 are provided with a discharge hole 126;

The second elastic member 123 and the second sealing member 124 are located on the inner side of the support frame, and the second sealing member 124 is used to block the discharge hole 126 of the discharge pipe. The elastic member 123 abuts between the storage tank 100 and the second discharge sealing member;

When the second elastic member 123 is compressed to a second predetermined length, the discharge hole 126 of the discharge pipe 102 extends out of the support frame 117 and is separated from the second sealing member 124 to realize ventilation.

Preferably, the first elastic member 127 and the second elastic member 123 are springs.

Preferably, the first sealing member 128 and the second sealing member 124 are both sealing gaskets.

In actual use, the storage tank 100 is placed on the support frame 117, the discharge blocking member 125 passes through the second insertion hole, and the intake blocking member 129 passes through the first insertion hole, so that all the The air inlet hole 131 is in communication with the atmosphere, and the material flows out from the discharge hole 126 . When the storage tank 100 is not in use, after the storage tank 100 is taken out from the support frame 117 , the first sealing member 128 makes the first sealing member 128 reset under the restoring action of the first elastic member 127 and the limiting action of the intake blocking member 129 . A sealing member 128 seals the air intake hole 131 ; similarly, the second sealing member 124 seals the discharge hole 126 under the reset action of the second elastic member 123 and the limiting action of the discharge blocking member 125 . ; Thus, with the outflow of the photosensitive resin in the storage tank 100, the discharge pipe 102 and the air intake pipe 101 can automatically complete the closing process.

Embodiment 8

The eighth embodiment is an improvement on the basis of the above-mentioned embodiments. The technical contents disclosed in the above-mentioned embodiments are not described repeatedly, and the contents disclosed in the above-mentioned embodiments also belong to the contents disclosed in this eighth embodiment.

14, in order to ensure that the discharge pipe 102 and the intake pipe 101 are more stable in the material tray 103, and the photosensitive resin flowing out of the storage tank 100 flows in the vertical direction, the material tray 103 is provided with There is a fixing member 130, and the fixing member 130 is used to fix the air inlet pipe 101 and the discharge pipe 102; the fixing member 130 is provided with an air inlet hole 131 and a discharge hole 126; the air inlet hole 131 In communication with the intake end 106 , the discharge hole 126 communicates with the discharge end 109 . In this way, the installation positions of the intake pipe 101 and the discharge pipe 102 can be fixed, so that the structure is more compact.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope. Furthermore, those skilled in the art will appreciate that although some of the embodiments herein include certain features, but not others, included in other embodiments, that combinations of features of different embodiments are intended to be within the scope of this application And form different embodiments.

Claims (10)

1. A feeding device for a three-dimensional printer, characterized in that it comprises a material storage tank, an air inlet pipe and a discharge pipe; the material storage tank is used for storing materials, and the material storage tank is placed in the above the tray; The air intake end of the air intake pipe is located outside the material storage tank and is at a predetermined distance from the bottom surface of the material tray of the three-dimensional printer, and the air outlet end of the air intake pipe is located in the material storage tank and is located at the bottom of the material. above the liquid level; The feeding end of the discharging pipe is located in the liquid level of the material in the storage tank, and the discharging end of the discharging pipe is used for adding the material to the feeding tray. 2. The feeding device according to claim 1, wherein the discharge pipe is provided with a flow regulating assembly and a flow meter; The flow regulating component is used for regulating the flow rate of the material flowing out from the discharge end, and the flow meter is used for detecting the flow rate of the material flowing out from the material discharge end. 3 . The feeding device according to claim 1 , wherein a residual quantity detection component is provided on the storage tank, and the residual quantity detection component is used to detect the residual of the material in the storage tank. 4 . quantity. 4. The feeding device according to claim 1, wherein a material storage space is formed in the material storage tank, and the material storage space is used to store the material; An annular space is formed around the material storage space, and a heating element is arranged in the annular space, and the heating element is used for heating the material in the material storage space. 5. The feeding device according to claim 1, further comprising a mixer, and the storage tank is provided with a plurality of; There are a plurality of the air inlet pipes, and the plurality of the air inlet pipes are in one-to-one correspondence with the plurality of the material storage tanks; The storage tanks are in one-to-one correspondence; A plurality of the material storage tanks respectively have the material discharge pipes, and the plurality of the material discharge pipes are communicated with the mixer, and the mixer is used for mixing the materials flowing out from the plurality of the material storage tanks , and discharge the mixed materials to the tray. 6 . The feeding device according to claim 1 , wherein an end cover is provided on the storage tank. 7 . 7. A three-dimensional printer, characterized in that it comprises a casing, a support frame arranged on the casing, a material tray arranged in the casing, and the support frame according to claim 1, which is arranged on the support frame. The feeding device described in any one of -6; The support frame is provided with a turntable and a drive member for driving the turntable to rotate, a first adsorption member is provided on the turntable, a second adsorption member is correspondingly arranged in the storage tank, and the first adsorption member is connected with the first adsorption member. The second adsorption parts can adsorb each other, and when the driving part drives the turntable and the first adsorption part to rotate, the second adsorption parts can rotate in the storage tank to stir the storage tank. material in the tank. 8. The three-dimensional printer according to claim 7, wherein an air intake pipe sealing assembly is provided on the air intake end of the air intake pipe; The air intake pipe sealing assembly includes a first elastic member, a first sealing member and an air intake blocking member; a first insertion hole is arranged on the support frame, and the air intake end of the air inlet pipe passes through the first insertion hole and extending to the outside of the support frame, the intake blocking member is arranged at the intake end of the intake pipe, and an intake hole is provided on the intake pipe close to the intake blocking member; The first elastic member and the first sealing member are located on the inner side of the support frame, and the first sealing member is used to block the air inlet hole of the air inlet pipe, and the first elastic member abuts against between the storage tank and the first seal; When the first elastic member is compressed to a first predetermined length, the air inlet hole of the air inlet pipe extends out of the support frame and is separated from the first sealing member, so as to realize ventilation. 9. The three-dimensional printer according to claim 7, wherein a discharge pipe sealing assembly is provided on the discharge end of the discharge pipe; The air intake pipe sealing assembly includes a second elastic member, a second sealing member and a discharge blocking member; the support frame is provided with a second insertion hole, and the discharge end of the discharge pipe passes through the second insertion hole. The hole extends to the outside of the support frame, the discharge blocking member is arranged at the discharge end of the discharge pipe, and the discharge pipe close to the discharge blocking member is provided with a discharge hole; The second elastic member and the second sealing member are located on the inner side of the support frame, and the second sealing member is used to block the discharge hole of the discharge pipe, and the second elastic member abuts between the storage tank and the second seal; When the second elastic member is compressed to a second predetermined length, the discharge hole of the discharge pipe extends out of the support frame and is separated from the second sealing member, so as to realize discharging. 10 . The three-dimensional printer according to claim 7 , further comprising a fixing member, the fixing member is arranged in the material tray, and the fixing member is used for fixing the intake pipe and the discharge pipe. 11 . ; The fixing member is provided with an air inlet hole and a discharge hole; the air inlet hole is communicated with the air inlet end, and the discharge hole is communicated with the discharge end.

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