Feeding device and three-dimensional printer

Abstract

The utility model discloses a feeding device and a three-dimensional printer, relates to the technical field of three-dimensional printer equipment, and mainly aims to enable preparation work before feeding to be simple so as to improve working efficiency. According to the main technical scheme, the feeding device is applied to the three-dimensional printer and comprises a base, a first drainage piece and a second drainage piece are arranged on the base, the first drainage piece is used for being communicated with a gas conveying pipeline, and the second drainage piece is used for being communicated with a material conveying pipeline; the container comprises a first opening and a second opening, a first switch piece is arranged at the first opening and used for closing or opening the first opening, and a second switch piece is arranged at the second opening and used for closing or opening the second opening; the container is provided with an installation position relative to the base, at the installation position, the first drainage piece penetrates through the first switch piece to be communicated with the interior of the container, and the second drainage piece penetrates through the second switch piece to be communicated with the interior of the container.

Description

Technical Field

[0001] The utility model relates to the technical field of three-dimensional printing equipment, in particular to a feeding device and a three-dimensional printer. Background Art

[0002] The light-curing 3D printing equipment usually needs to be equipped with a feeding device for feeding the material tank.

[0003] For example, the patent with publication number CN218227900U discloses an automatic feeding device and a 3D printing system, and specifically discloses that the automatic feeding device includes a container, which is used to contain liquid material, and the container includes a cover body and a bottle body, and the cover body is provided with an air inlet and a second outlet, the air inlet is used to input gas into the container, and the second outlet is used to allow the liquid material in the container to be discharged from the container under the action of the gas.

[0004] When using an automatic feeding device, some preparation work is usually required, including replacing the cover of the bottle itself with a cover with the above-mentioned air inlet and second outlet, and then connecting the outlet pipe and the air inlet pipe to the second outlet and the air inlet, etc. It can be seen that the preparation work before feeding is relatively cumbersome, which reduces work efficiency. Utility Model Content

[0005] In view of this, an embodiment of the utility model provides a feeding device and a three-dimensional printer, the main purpose of which is to simplify the preparation work before feeding, thereby improving work efficiency.

[0006] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0007] In a first aspect, an embodiment of the utility model provides a feeding device, which is applied to a 3D printer, comprising:

[0008] A base, wherein a first flow guide member and a second flow guide member are provided on the base, wherein the first flow guide member is used to communicate with a gas pipeline, and the second flow guide member is used to communicate with a material pipeline;

[0009] A container, wherein the container comprises a first opening and a second opening, wherein a first switch is disposed at the first opening and is used to close or open the first opening, and a second switch is disposed at the second opening and is used to close or open the second opening;

[0010] The container has a mounting position relative to the base, in which the container has a mounting position.

[0011] The first flow guide member passes through the first switch member to communicate with the interior of the container, and the second flow guide member passes through the second switch member to communicate with the interior of the container.

[0012] Further, both the first switching member and / or the second switching member include a first one-way valve, the first one-way valve is disposed at the first opening or the second opening, and the first one-way valve is configured to close or open the first opening or the second opening;

[0013] The conducting direction of the first one-way valve is from the outside of the container to the inside of the container;

[0014] When the container is in an atmospheric pressure or positive pressure state, the first one-way valve is closed;

[0015] The first one-way valve is a duckbill valve.

[0016] Further, both the first switching member and the second switching member further include a cover body, the cover body is provided with a mounting hole, the duckbill valve is disposed within the cover body, and an inlet of the duckbill valve communicates with the mounting hole;

[0017] The cover body is covered on the first opening or the second opening, and an outlet of the duckbill valve communicates with the first opening or the second opening.

[0018] Further, the first drainage member and the second drainage member are tubular bodies, the tubular body includes an opposite drainage end and a connection end, and the connection end is configured to communicate with the gas transmission pipeline or the material transmission pipeline;

[0019] At the installation position, the drainage end of the first drainage member passes through the duckbill valve of the first switching member to communicate with the inside of the container, and the drainage end of the second drainage member passes through the duckbill valve of the second switching member to communicate with the inside of the container.

[0020] Further, the container has a disassembly position relative to the base;

[0021] When the container is switched from the disassembly position to the installation position relative to the base, the first switching member faces the end face of the drainage end of the first drainage member, and the second switching member faces the end face of the drainage end of the second drainage member.

[0022] Further, a first plugging portion is provided on the base, and a second plugging portion is provided on the container;

[0023] At the installation position, the first plugging portion and the second plugging portion are pluggably plugged and matched.

[0024] Further, the plugging direction of the first plugging portion and the second plugging portion is consistent with the extending direction of the first drainage member and the second drainage member.

[0025] Further, the first plugging portion is one of a plug and a socket, the second plugging portion is the other of the plug and the socket, and the plug is pluggably inserted into the socket.

[0026] Further, at the installation position, along the direction of gravity, the first opening is located above the second opening.

[0027] Further, the feeding device further includes:

[0028] An electronic tag, which is disposed on the container;

[0029] An electronic tag recognition member, which is disposed on the base and is used for receiving a signal emitted by the electronic tag and sending the signal to the control system of the 3D printer.

[0030] Further, the feeding device further includes:

[0031] A weighing assembly, the base is disposed on the weighing assembly, and the weighing assembly is used for weighing the weight of the container.

[0032] Further, the weighing assembly includes a bracket, a tray and a weighing sensor, and the tray is connected to the bracket through the weighing sensor;

[0033] The base is connected to the tray;

[0034] The weighing sensor is used for weighing the weight of the container.

[0035] Further, the feeding device further includes:

[0036] A gas driving assembly, the gas driving assembly includes the gas transmission pipeline, and the gas driving assembly is used for conveying gas into the container through the first drainage member.

[0037] Further, the gas driving assembly includes a pump body, a three-way joint, a first valve and a second valve;

[0038] The air blowing port of the pump body is communicated with the first joint of the three-way joint through the first valve, and the air extraction port of the pump body is communicated with the second joint of the three-way joint through the second valve;

[0039] The third joint of the three-way joint is communicated with the first drainage member through the gas transmission pipeline.

[0040] Further, a second one-way valve is disposed on the gas transmission pipeline, and the second one-way valve is used for opening when the pressure in the container is less than or equal to a preset value;

[0041] Both the first switch member and the second switch member are made of flexible materials.

[0042] In a second aspect, an embodiment of the present invention further provides a three-dimensional printer, including the aforementioned feeding device.

[0043] By means of the above technical solutions, the present invention has at least the following beneficial effects:

[0044] In the technical solution provided by the embodiment of the present invention, by providing a first drainage member and a second drainage member on the base, the first drainage member can be communicated with the gas pipeline, and the second drainage member can be communicated with the feeding pipeline; at the same time, a first switch member is provided at the first opening of the container, and a second switch member is provided at the second opening of the container. Moreover, when the container is in the installation position relative to the base, the first drainage member can pass through the first switch member to communicate with the inside of the container, so that the container is communicated with the gas pipeline through the first drainage member, and the second drainage member can pass through the second switch member to communicate with the inside of the container, so that the container is communicated with the feeding pipeline through the second drainage member. In this way, the container can be communicated with the gas circuit and the liquid circuit. That is to say, when using the feeding device provided by the embodiment of the present invention, only by installing the container on the base, the container can be communicated with the gas circuit and the liquid circuit, without additional preparation work such as replacing the cover body. The preparation work before feeding is simple, which improves the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 is a cross-sectional view of a feeding device provided by an embodiment of the present invention;

[0046] Figure 2 is an exploded view of a container in a feeding device provided by an embodiment of the present invention;

[0047] Figure 3 is a cross-sectional view of a container in a feeding device provided by an embodiment of the present invention;

[0048] Figure 4 is a structural diagram of a base in a feeding device provided by an embodiment of the present invention;

[0049] Figure 5 is a structural diagram of a first drainage member in a feeding device provided by an embodiment of the present invention;

[0050] Figure 6 is an exploded view of a weighing assembly in a feeding device provided by an embodiment of the present invention;

[0051] Figure 7 is an exploded view of a gas driving assembly in a feeding device provided by an embodiment of the present invention;

[0052] Figure 8 An explosion diagram of a second one-way valve in a feeding device provided in an embodiment of the utility model.

[0053] Description of reference numerals:

[0054] 1-base; 11-first drainage member; 111-drainage end; 112-connecting end; 12-second drainage member; 13-plug; 2-container; 21-first opening; 22-second opening; 23-socket; 3-first switch member; 31-first one-way valve; 32-cover body; 4-second switch member; 5-weighing assembly; 51-bracket; 52-tray; 53-weighing sensor; 6-gas drive assembly; 61-pump body; 62-three-way connector; 63-first valve; 64-second valve; 7-second one-way valve; 71-valve body; 711-first interface; 72-valve cover; 721-air inlet; 722-second interface; 73-tube body; 74-piston; 75-elastic member. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings in the preferred embodiments of the present invention.

[0056] like Figure 1 As shown, an embodiment of the utility model provides a feeding device, which is applied to a three-dimensional printer, including a base 1, on which a first guide member 11 and a second guide member 12 are arranged, the first guide member 11 is used to communicate with a gas pipeline, and the second guide member 12 is used to communicate with a material pipeline; a container 2, the container 2 includes a first opening 21 and a second opening 22, a first switch member 3 is arranged at the first opening 21, the first switch member 3 is used to close or open the first opening 21, and a second switch member 4 is arranged at the second opening 22, and the second switch member 4 is used to close or open the second opening 22; the container 2 has an installation position relative to the base 1, in which the first guide member 11 passes through the first switch member 3 to communicate with the interior of the container 2, and the second guide member 12 passes through the second switch member 4 to communicate with the interior of the container 2.

[0057] It can be understood that the first drainage member 11 and the second drainage member 12 have a drainage function, and they can allow media such as gas or liquid to pass through. For example, both of them can be tube structures. When the first drainage member 11 passes through the first switching member 3, the first opening 21 is opened, so that the first drainage member 11 enters the first opening 21 or enters the interior of the container 2 through the first opening 21 to communicate with the interior of the container 2, so that the container 2 can be connected to the gas transmission pipeline through the first drainage member 11. The gas transmission pipeline can input gas into the container 2 through the first drainage member 11 or suck the gas in the container 2; when the second drainage member 12 passes through the second switching member 4, the second opening is opened, so that the second drainage member 12 enters the second opening or enters the interior of the container 2 through the second opening to communicate with the interior of the container 2, so that the container 2 can be connected to the material transmission pipeline through the second drainage member 12. The container 2 can discharge the liquid material to the material transmission pipeline through the second drainage member 12 or suck the liquid material from the material transmission pipeline through the second drainage member 12. When the three-dimensional printer feeds materials, the gas transmission pipeline inputs gas into the container 2 through the first drainage member 11, so that the liquid material in the container 2 is discharged into the material transmission pipeline through the second drainage member 12.

[0058] Wherein, both the first switching member 3 and the second switching member 4 can be made of flexible materials. When the first drainage member 11 passes through the first switching member 3, the first switching member 3 can seal the gap between them; when the second drainage member 12 passes through the second switching member 4, the second switching member 4 can seal the gap between them.

[0059] In this application, when the first drainage member 11 is pulled out of the first switching member 3, the first opening 21 can be closed. In this application, it is closed by the first switching member 3; when the second drainage member 12 is pulled out of the second switching member 4, the second opening 22 can be closed. In this application, it is closed by the second switching member.

[0060] The feeding device provided by the embodiment of the present utility model is provided with a first drainage member 11 and a second drainage member 12 on the base 1. The first drainage member 11 can be communicated with the gas pipeline, and the second drainage member 12 can be communicated with the material pipeline. At the same time, a first switch member 3 is provided at the first opening 21 of the container 2, and a second switch member 4 is provided at the second opening of the container 2. Moreover, when the container 2 is in the installation position relative to the base 1, the first drainage member 11 can pass through the first switch member 3 to communicate with the inside of the container 2, so that the container 2 is communicated with the gas pipeline through the first drainage member 11, and the second drainage member 12 can pass through the second switch member 4 to communicate with the inside of the container 2, so that the container 2 is communicated with the material pipeline through the second drainage member 12. In this way, the container 2 can be communicated with the gas circuit and the liquid circuit. That is to say, when using the feeding device provided by the embodiment of the present utility model, only by installing the container 2 on the base 1, the container 2 can be communicated with the gas circuit and the liquid circuit, without performing additional preparation work such as replacing the cover body. The preparation work before feeding is simple, and the work efficiency is improved.

[0061] In some embodiments, referring to Figure 1 and Figure 2 , both the first switch member 3 and / or the second switch member 4 may include a first one-way valve 31. The first one-way valve 31 is disposed at the first opening 21 or the second opening 22, and the first one-way valve 31 is used to close or open the first opening 21 or the second opening 22. The conduction direction of the first one-way valve 31 is from the outside of the container 2 to the inside of the container 2. The first one-way valve 31 may be a duckbill valve.

[0062] In the above embodiment, when the container 2 is installed on the base 1, the first drainage member 11 passes through the first one-way valve 31 of the first switch member 3, so that the first one-way valve 31 is opened, so that the first drainage member 11 is communicated with the inside of the container 2. At the same time, the second drainage member 12 passes through the first one-way valve 31 of the second switch member 4, so that the second one-way valve 31 is opened, so that the second drainage member 12 is communicated with the inside of the container 2.

[0063] Among them, the structures of the first switch member 3 and the second switch member 4 may be the same.

[0064] It can be understood that when the container 2 is in an atmospheric pressure or positive pressure state, the first one-way valve 31 is closed. When the container 2 is installed on the base 1, the first one-way valve 31 can tightly wrap the corresponding drainage member to ensure the sealing of the first opening 21 and the second opening 22.

[0065] Specifically, the structural form of the first one-way valve 31 is not limited in this application, as long as it has the above functions such as one-way flow. In order to ensure the corrosion resistance of the first switch member 3 and the second switch member 4, the first one-way valve 31 may be a duckbill valve.

[0066] For facilitating the installation of the first switch member 3 at the first opening 21 and the installation of the second switch member 4 at the second opening 22, refer to Figure 1 and Figure 2 , in some embodiments, both the first switch member 3 and the second switch member 4 may further include a cover body 32. An installation hole is formed in the cover body 32, and the duckbill valve is disposed inside the cover body 32, and the inlet of the duckbill valve communicates with the installation hole; the cover body 32 is covered at the first opening 21 or the second opening 22, and the outlet of the duckbill valve communicates with the first opening 21 or the second opening 22.

[0067] Among them, when the cover body 32 is covered at the first opening 21 or the second opening 22, the installation of the first switch member 3 at the first opening 21 and the installation of the second switch member 4 at the second opening 22 can be realized, and the operation is convenient. Moreover, since the inlet of the duckbill valve communicates with the installation hole, the corresponding drainage member can pass through the duckbill valve via the installation hole, and the operation is also convenient. Among them, a connecting portion for connecting the cover body 32 may be provided at the first opening 21 or the second opening 22. For example, a protrusion is provided on the container 2, and the first opening 21 is formed on the protrusion to communicate with the inside of the container 2, and the cover body 32 can be covered on the protrusion.

[0068] It should be noted that the cover body 32 may be detachably connected to the portion at the first opening 21 or the second opening 22. For example, the two may be threadedly connected or snap-connected, etc., so as to facilitate the maintenance of the first switch member 3 and the second switch member 4, and even facilitate the maintenance of the entire feeding device.

[0069] In some embodiments, refer to Figure 1 and Figure 5 , both the first drainage member 11 and the second drainage member 12 may be tube bodies. The tube body includes opposite drainage ends 111 and connection ends 112, and the connection end 112 is used to communicate with a gas transmission pipeline or a material transmission pipeline; at the installation position, the drainage end 111 of the first drainage member 11 passes through the duckbill valve of the first switch member 3 to communicate with the inside of the container 2, and the drainage end 111 of the second drainage member 12 passes through the duckbill valve of the second switch member 4 to communicate with the inside of the container 2.

[0070] Among them, the first drainage member 11 and the second drainage member 12 are tube body structures. After the drainage ends 111 of the two pass through the duckbill valves of the corresponding switch members, the first drainage member 11 can communicate the container 2 and the gas transmission pipeline, so that gas can flow between the container 2 and the gas transmission pipeline via the first drainage member 11, and the second drainage member 12 can communicate the container 2 and the material transmission pipeline, so that liquid material can flow between the container 2 and the material transmission pipeline via the second drainage member 12. The structure is simple and the use is reliable.

[0071] Specifically, the connection ends 112 of the first drainage member 11 and the second drainage member 12 may be provided with connectors, such as taper connectors, to facilitate the connection of the corresponding pipes to the connection ends 112. In addition, chamfers may be provided at the drainage ends 111 of the first drainage member 11 and the second drainage member 12 to facilitate the drainage ends 111 passing through the duckbill valve.

[0072] In some embodiments, the container 2 has a dismounting position relative to the base 1; when the container 2 switches from the dismounting position to the mounting position relative to the base 1, the first switch member 3 is opposite to the end face of the drainage end 111 of the first drainage member 11, and the second switch member 4 is opposite to the end face of the drainage end 111 of the second drainage member 12.

[0073] Among them, when the container 2 switches from the dismounting position to the mounting position relative to the base 1, it can be understood as the process of installing the container 2 onto the base 1.

[0074] Since during the process of installing the container 2 onto the base 1, the first switch member 3 is opposite to the end face of the drainage end 111 of the first drainage member 11, and the second switch member 4 is opposite to the end face of the drainage end 111 of the second drainage member 12, therefore, after the container 2 is installed on the base 1, that is, when the container 2 is in the mounting position, the first drainage member 11 can just pass through the first switch member 3, and the second drainage member 12 can just pass through the second switch member 4 without being offset, thereby ensuring the connection between the container 2 and the gas circuit and the liquid circuit after the container 2 is installed on the base 1.

[0075] To ensure the reliability of the connection between the container 2 and the gas circuit and the liquid circuit. In some embodiments, a first plug-in portion may be provided on the base 1, and a second plug-in portion may be provided on the container 2; in the mounting position, the first plug-in portion and the second plug-in portion are pluggably plugged and matched.

[0076] Among them, by providing the first plug-in portion and the second plug-in portion, when the container 2 is in the mounting position, the container 2 can be firmly fixed on the base 1 through the plugging and matching of the first plug-in portion and the second plug-in portion, avoiding shaking relative to the base 1 and deviating from the base 1 when subjected to external forces and other abnormal factors, thereby ensuring the reliable connection between the first drainage member 11 and the second drainage member 12 and the container 2, and further ensuring the reliable connection between the container 2 and the gas circuit and the liquid circuit.

[0077] To further facilitate the operation, in some embodiments, the plugging direction of the first plug-in portion and the second plug-in portion is the same as the extending direction of the first drainage member 11 and the second drainage member 12.

[0078] According to the above embodiments, during the process of inserting and installing the container 2 onto the base 1, the first drainage member 11 can be inserted into the first switch member 3, and the second drainage member can be inserted into the second switch member 4. Until the container 2 is inserted in place on the base 1, the first drainage member 11 can pass through the first switch member 3, and the second drainage member 12 can pass through the second switch member 4. That is to say, such a structural arrangement can enable the insertion and installation of the container 2 on the base 1, and the corresponding drainage member passing through the corresponding switch member can be carried out simultaneously and end at the same time. When the container 2 is installed on the base 1, the corresponding drainage member can pass through the corresponding switch member, realizing the reliable connection between the container 2 and the gas circuit and the liquid circuit, with convenient and fast operation, and further improving the work efficiency.

[0079] Among them, there can be various structural forms of the aforementioned first insertion portion and the second insertion portion. In order to improve the simplicity of the structure and the reliability of use, refer to Figure 3 and Figure 4 , in some embodiments, the first insertion portion can be one of the plug 13 and the socket 23, and the second insertion portion is the other of the plug 13 and the socket 23, and the plug 13 is insertably and removably inserted into the socket 23. For the convenience of operation, the first insertion portion can be the plug 13, and the second insertion portion can be the socket 23.

[0080] In some embodiments, the container 2 can be in the shape of a cuboid, and a groove can be provided on its outer side wall. The groove extends along its length direction, and the first switch member 3 and the second switch member 4 can be correspondingly arranged at both ends of the container 2 along the length direction of the container; the base 1 can be an L-shaped member, which includes a longitudinal seat and a transverse seat. A protrusion is provided on the inner wall surface of its longitudinal seat, and the protrusion extends along the length direction of the longitudinal seat. The first drainage member 11 is arranged on the top surface of the protrusion, and the second drainage member 12 is arranged on the top surface of the transverse seat.

[0081] Among them, the groove can be the socket 23, and the protrusion can be the plug 13. When installing the container 2 onto the base 1, the protrusion can be inserted into the groove along the extension direction of the longitudinal seat of the base 1. At the same time, the first drainage member 11 on the base 1 passes through the first switch member 3, and the second drainage member 12 passes through the second switch member 4.

[0082] In some embodiments, refer to Figure 1 , at the installation position, along the gravity direction, the first opening 21 is located above the second opening 22, so as to facilitate the gas pipeline to input gas into the top of the container 2 through the first drainage member 11, so as to squeeze the liquid material in the container 2 downward, and flow to the feeding pipeline through the second drainage member 12 at the second opening 22, facilitating the output of the liquid material and making it more convenient to use.

[0083] It can be understood that when the feeding device is in use, the container 2 is inverted on the base 1 to facilitate the output of the liquid material.

[0084] In some embodiments, the feeding device may further include an electronic tag disposed on the container 2; an electronic tag identifier disposed on the base 1 for receiving a signal emitted by the electronic tag and sending the signal to the control system of the 3D printer.

[0085] It can be understood that the electronic tag on the container 2 corresponds to the type of liquid material in the container 2. By providing the electronic tag and the electronic tag identifier, after the container 2 is installed on the base 1, the electronic tag identifier on the base 1 can identify the electronic tag on the container 2 and send the corresponding signal to the control system of the 3D printer, so that the 3D printer can distinguish the type of liquid material in the container 2, and then switch the feeding pipeline communicating with the second drainage member 12, so that the second drainage member 12 communicates with the feeding pipeline for transporting this type of liquid material, thereby avoiding the mixing of feeding pipelines for containers 2 storing different types of liquid materials, causing pollution of the feeding pipelines, or identifying other information in the container 2, such as the density and weight of the consumables. Among them, there are various ways for the control system of the 3D printer to switch the feeding pipeline communicating with the second drainage member 12. For example, the second drainage member 12 communicates with a plurality of feeding pipelines correspondingly through a multi-way valve, and the control system can switch the feeding pipeline communicating with the second drainage member 12 by controlling the channels of the multi-way valve.

[0086] Specifically, the electronic tag may be a radio frequency identification (RFID) tag, which can be disposed in a groove of the container 2, and the electronic tag identifier may be an RFID identification antenna, which can be disposed inside the base 1. Or it can be a readable storage device.

[0087] In some embodiments, referring to Figure 1 and Figure 6 , the feeding device may further include a weighing assembly 5, the base 1 is disposed on the weighing assembly 5, and the weighing assembly 5 is used to weigh the weight of the container 2.

[0088] Among them, the weighing assembly 5 can weigh the weight of the container 2 in real time to obtain the weight of the liquid material in the container 2. Specifically, the weighing assembly 5 may be electrically connected to the control system of the 3D printer, and the weight data obtained by weighing by the weighing assembly 5 can be sent to the control system, so that the control system can judge the weight of the liquid material in the current container 2, thereby determining whether the container 2 needs to be refilled, which is more convenient to use.

[0089] In some embodiments, referring to Figure 6, the weighing assembly 5 may include a bracket 51, a tray 52 and a weighing sensor 53. The tray 52 is connected to the bracket 51 through the weighing sensor 53; the base 1 is connected to the tray 52; the weighing sensor 53 is used to weigh the weight of the container 2. Among them, the weighing sensor 53 may be electrically connected to the control system of the 3D printer.

[0090] In some embodiments, referring to Figure 7 , the feeding device may further include a gas driving assembly 6. The gas driving assembly 6 includes a gas transmission pipeline, and the gas driving assembly 6 is used to convey gas into the container 2 through the first drainage member 11.

[0091] After the container 2 is in the installation position, that is, after the container 2 is installed on the base 1, the electronic tag identification member on the base 1 starts to identify the electronic tag on the container 2 and sends the corresponding signal to the control system of the 3D printer, so as to distinguish the types of liquid materials in the container 2. After the identification work is completed, the gas driving assembly 6 can be controlled to start, and gas, such as air, is continuously injected into the container 2 through the first drainage member 11, so that the liquid material in the container 2 can be discharged through the second drainage member 11 at an accelerated rate, realizing the feeding of the 3D printer. Correspondingly, when it is necessary to stop feeding, the gas driving assembly 6 can be controlled to stop, so as to stop injecting gas into the container 2 and make the liquid material stop discharging.

[0092] In some embodiments, referring to Figure 7 , the gas driving assembly 6 may include a pump body 61, a three-way joint 62, a first valve 63 and a second valve 64; the air blowing port of the pump body 61 is communicated with the first joint of the three-way joint 62 through the first valve 63, and the air suction port of the pump body 61 is communicated with the second joint of the three-way joint 62 through the second valve 64; the third joint of the three-way joint 62 is communicated with the first drainage member 11 through a gas transmission pipeline.

[0093] Among them, the pump body 61 may be a vacuum pump. When the first valve 63 is opened and the second valve 64 is closed, the air blowing port of the pump body 61, the gas transmission pipeline and the first drainage member 11 are communicated. When the pump body 61 is started, the pump body 61 can inject gas into the container 2 through the first drainage member 11, so that the liquid material in the container 2 is discharged from the container 2 through the second drainage member 12 to realize feeding; when the first valve 63 is closed and the second valve 64 is opened, the air suction port of the pump body 61, the gas transmission pipeline and the first drainage member 11 are communicated. When the pump body 61 is started, the pump body 61 can suck the gas in the container 2 through the first drainage member 11, so that the liquid material is sucked back into the container 2 through the feeding pipeline to realize the function of discharging materials. The structure is simple and reliable in use.

[0094] That is to say, the feeding device not only has the feeding function to replenish materials for the 3D printer, but also has the function of discharging materials to realize the recovery of liquid materials, which is more convenient to use.

[0095] During the process of automatic material discharging, the pump body 61 sucks the gas in the container 2, creating a negative pressure environment in the container 2 and prompting the liquid material in the liquid circuit to flow back into the container 2. During the process of gas extraction, if the negative pressure in the container 2 is too large, it is likely to cause damage to the container 2.

[0096] To solve the above technical problems, in some embodiments, a second one-way valve 7 may be provided on the gas transmission pipeline. The second one-way valve 7 is used to open when the pressure in the container 2 is less than or equal to a preset value. In this way, during the process of gas extraction, if the negative pressure in the container 2 is too large, the second one-way valve 7 will open, allowing the negative pressure in the container 2 to be released and protecting the container 2 from being damaged.

[0097] Among them, the structural form of the second one-way valve 7 can be various, as long as it can open when the negative pressure in the container is too large to release the negative pressure.

[0098] In some embodiments, referring to Figure 8 , the second one-way valve 7 may include a valve body 71, a valve cover 72, a tube body 73 with openings at both ends, a piston 74, and an elastic member 75; the valve body 71 and the valve cover 72 are hermetically connected and enclose an accommodation cavity. A first interface 711 communicating with the accommodation cavity is provided on the valve body 71, and an air inlet 721 and a second interface 722 communicating with the accommodation cavity are provided on the valve cover 72; the tube body 73 is located in the accommodation cavity. One end of the tube body 73 is connected to the inner wall of the valve cover 72 and communicates with the air inlet 721. The other end of the tube body 73 extends towards the valve body 71, and the opening at the other end of the tube body 73 is a pressure relief port; the piston 74 is movably arranged in the tube body 73 through the elastic member 75; the elastic member 75 is used to apply a force to the piston 74 so that the end of the piston 74 blocks the pressure relief port.

[0099] In use, the second one-way valve 7 is connected to the gas transmission pipeline through the first interface 711 and the second interface 722. When the negative pressure in the container 2 is normal, the piston 74 blocks the pressure relief port under the action of the elastic member 75 to maintain the normal negative pressure environment in the container 2; when the negative pressure in the container 2 is too large, the piston 74 moves relative to the tube body 73 against the elastic force of the elastic member 75 to open the pressure relief port, allowing external gas to enter the accommodation cavity through the air inlet 721, reducing the negative pressure, preventing the negative pressure from being too large and affecting other structures. The structure is simple and reliable in use.

[0100] The embodiment of the present invention also provides a 3D printer, including the aforementioned feeding device.

[0101] The 3D printer provided by the embodiment of the present invention includes the aforementioned feeding device, so it includes all the beneficial effects of the feeding device, which will not be elaborated again here.

[0102] Reference numeral 1, a feeding device, applied to a 3D printer, comprising:

[0103] A base 1, on which a first drainage member 11 and a second drainage member 12 are provided. The first drainage member 11 is used to communicate with a gas transmission pipeline, and the second drainage member 12 is used to communicate with a material transmission pipeline;

[0104] A container 2, which includes a first opening 21 and a second opening 22. A first switch member 3 is provided at the first opening 21, and the first switch member 3 is used to close or open the first opening 21. A second switch member 4 is provided at the second opening 22, and the second switch member 4 is used to close or open the second opening 22;

[0105] The container 2 has an installation position relative to the base 1. At the installation position,

[0106] The first drainage member 11 passes through the first switch member 3 to communicate with the inside of the container 2, and the second drainage member 12 passes through the second switch member 4 to communicate with the inside of the container 2.

[0107] Reference numeral 2, the feeding device based on reference numeral 1,

[0108] Both the first switch member 3 and / or the second switch member 4 include a first one-way valve 31. The first one-way valve 31 is provided at the first opening 21 or the second opening 22, and the first one-way valve 31 is used to close or open the first opening 21 or the second opening 22;

[0109] The conduction direction of the first one-way valve 31 is from the outside of the container 2 to the inside of the container 2;

[0110] When the container 2 is in an atmospheric pressure or positive pressure state, the first one-way valve 31 is closed;

[0111] The first one-way valve 31 is a duckbill valve.

[0112] Reference numeral 3, the feeding device based on reference numeral 2,

[0113] Both the first switch member 3 and the second switch member 4 further include a cover body 32. An installation hole is formed in the cover body 32, and the duckbill valve is arranged inside the cover body 32, and the inlet of the duckbill valve is communicated with the installation hole;

[0114] The cover body 32 is covered on the first opening 21 or the second opening 22, and the outlet of the duckbill valve is communicated with the first opening 21 or the second opening 22.

[0115] Reference numeral 4, the feeding device based on reference numeral 2,

[0116] The first drainage member 11 and the second drainage member 12 are pipe bodies, and the pipe bodies include opposite drainage ends 111 and connection ends 112. The connection ends 112 are used to communicate with a gas transmission pipeline or a material transmission pipeline;

[0117] At the installation position, the drainage end 111 of the first drainage member 11 passes through the duckbill valve of the first switching member 3 to communicate with the interior of the container 2, and the drainage end 111 of the second drainage member 12 passes through the duckbill valve of the second switching member 4 to communicate with the interior of the container 2.

[0118] Label 5. Feeding device based on Label 4

[0119] The container 2 has a disassembly position relative to the base 1;

[0120] When the container 2 switches from the disassembly position to the installation position relative to the base 1, the first switching member 3 faces the end face of the drainage end 111 of the first drainage member 11, and the second switching member 4 faces the end face of the drainage end 111 of the second drainage member 12.

[0121] Label 6. Feeding device based on Label 4

[0122] The base 1 is provided with a first plug-in portion, and the container 2 is provided with a second plug-in portion;

[0123] At the installation position, the first plug-in portion and the second plug-in portion are pluggably engaged.

[0124] Label 7. Feeding device based on Label 6

[0125] The plugging direction of the first plug-in portion and the second plug-in portion is the same as the extending direction of the first drainage member 11 and the second drainage member 12.

[0126] Label 8. Feeding device based on Label 6

[0127] The first plug-in portion is one of the plug 13 and the socket 23, and the second plug-in portion is the other of the plug 13 and the socket 23, and the plug 13 is pluggably inserted into the socket 23.

[0128] Label 9. Feeding device based on Label 1

[0129] At the installation position, along the gravity direction, the first opening 21 is located above the second opening 22.

[0130] Label 10. The feeding device based on Label 1 further includes:

[0131] An electronic tag, which is arranged on the container 2;

[0132] An electronic tag recognition member, which is arranged on the base 1 and is used for receiving the signal emitted by the electronic tag and sending the signal to the control system of the 3D printer.

[0133] Label 11. The feeding device based on Label 1 further includes:

[0134] Weighing assembly 5, base 1 is disposed on weighing assembly 5, and weighing assembly 5 is used to weigh the weight of container 2.

[0135] Label 12, a feeding device based on Label 11

[0136] The weighing assembly 5 includes a bracket 51, a tray 52 and a weighing sensor 53, and the tray 52 is connected to the bracket 51 through the weighing sensor 53;

[0137] The base 1 is connected to the tray 52;

[0138] The weighing sensor 53 is used to weigh the weight of container 2.

[0139] Label 13, a feeding device based on Label 1, further includes:

[0140] A gas driving assembly 6, the gas driving assembly 6 includes a gas transmission pipeline, and the gas driving assembly 6 is used to convey gas into container 2 through the first drainage member 11.

[0141] Label 14, a feeding device based on Label 13

[0142] The gas driving assembly 6 includes a pump body 61, a tee joint 62, a first valve 63 and a second valve 64;

[0143] The air blowing port of the pump body 61 is communicated with the first joint of the tee joint 62 through the first valve 63, and the air suction port of the pump body 61 is communicated with the second joint of the tee joint 62 through the second valve 64;

[0144] The third joint of the tee joint 62 is communicated with the first drainage member 11 through a gas transmission pipeline.

[0145] Label 15, a feeding device based on Label 14

[0146] A second one-way valve is provided on the gas transmission pipeline, and the second one-way valve is used to open when the pressure in container 2 is less than or equal to a preset value;

[0147] Both the first switch member 3 and the second switch member 4 are made of flexible materials.

[0148] Label 16, a 3D printer, includes a feeding device based on any one of Labels 1 to 15.

[0149] Finally, it should be noted that 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 foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A feeding device, applied to a 3D printer, characterized in that: include: A base, wherein a first flow guide member and a second flow guide member are provided on the base, wherein the first flow guide member is used to communicate with a gas pipeline, and the second flow guide member is used to communicate with a material pipeline; A container, wherein the container comprises a first opening and a second opening, wherein a first switch is disposed at the first opening and is used to close or open the first opening, and a second switch is disposed at the second opening and is used to close or open the second opening; The container has a mounting position relative to the base, in which the container has a mounting position. The first flow guide member passes through the first switch member to communicate with the interior of the container, and the second flow guide member passes through the second switch member to communicate with the interior of the container.

2. The feeding device according to claim 1, characterized in that: The first switch element and / or the second switch element both include a first one-way valve, which is disposed at the first opening or the second opening, and is used to close or open the first opening or the second opening; The conducting direction of the first one-way valve is from the outside of the container to the inside of the container; When the container is under normal pressure or positive pressure, the first one-way valve is closed; The first one-way valve is a duckbill valve.

3. The feeding device according to claim 2, characterized in that: The first switch member and the second switch member each further include a cover body, the cover body is provided with a mounting hole, the duckbill valve is arranged in the cover body, and the inlet of the duckbill valve is communicated with the mounting hole; The cover body is disposed on the first opening or the second opening, and the outlet of the duckbill valve is communicated with the first opening or the second opening.

4. The feeding device according to claim 2, characterized in that: The first flow guide member and the second flow guide member are tube bodies, and the tube bodies include opposite flow guide ends and connecting ends, and the connecting ends are used to communicate with the gas pipeline or the material pipeline; In the installation position, the drainage end of the first drainage member passes through the duckbill valve of the first switch member to communicate with the interior of the container, and the drainage end of the second drainage member passes through the duckbill valve of the second switch member to communicate with the interior of the container.

5. The feeding device according to claim 4, characterized in that: The container has a removal position relative to the base; When the container is switched from the disassembly position to the installation position relative to the base, the first switch member is opposite to the end surface of the drainage end of the first drainage member, and the second switch member is opposite to the end surface of the drainage end of the second drainage member.

6. The feeding device according to claim 4, characterized in that: The base is provided with a first plug-in portion, and the container is provided with a second plug-in portion; In the installation position, the first plug-in portion and the second plug-in portion are pluggably engaged with each other.

7. The feeding device according to claim 6, characterized in that: The plugging direction of the first plugging portion and the second plugging portion is consistent with the extending direction of the first flow guiding member and the second flow guiding member.

8. The feeding device according to claim 6, characterized in that: The first plug-in portion is one of a plug and a socket, the second plug-in portion is the other of the plug and the socket, and the plug is pluggably plugged into the socket.

9. The feeding device according to claim 1, characterized in that: In the installation position, along the direction of gravity, the first opening is located above the second opening.

10. The feeding device according to claim 1, characterized in that: Also includes: An electronic label, wherein the electronic label is disposed on the container; An electronic tag identification component is arranged on the base and is used to receive a signal emitted by the electronic tag and send the signal to a control system of the three-dimensional printer.

11. The feeding device according to claim 1, characterized in that: Also includes: A weighing assembly, the base is arranged on the weighing assembly, and the weighing assembly is used to weigh the weight of the container.

12. The feeding device according to claim 11, characterized in that The weighing assembly comprises a bracket, a tray and a weighing sensor, wherein the tray is connected to the bracket via the weighing sensor; The base is connected to the tray; The weighing sensor is used to weigh the weight of the container.

13. The feeding device according to claim 1, characterized in that: Also includes: A gas drive assembly, the gas drive assembly includes the gas delivery pipeline, and the gas drive assembly is used to deliver gas into the container through the first guide member.

14. The feeding device according to claim 13, characterized in that The gas drive assembly includes a pump body, a three-way joint, a first valve and a second valve; The air blowing port of the pump body is connected to the first joint of the three-way joint through the first valve, and the air suction port of the pump body is connected to the second joint of the three-way joint through the second valve; The third joint of the three-way joint is connected to the first flow-guiding member through the gas pipeline.

15. The feeding device according to claim 14, characterized in that A second one-way valve is provided on the gas pipeline, and the second one-way valve is used to open when the pressure in the container is less than or equal to a preset value; The first switch element and the second switch element are both made of flexible material.

16. A three-dimensional printer, characterized in that: Comprising a feeding device as claimed in any one of claims 1 to 15.

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