Fluid tank and 3D printer

Abstract

According to the fluid tank and the 3D printer, the detection hole is formed in the tank wall of the tank body, the liquid level detection piece extends into the detection hole to detect the liquid level of fluid, the liquid level detection piece is prevented from occupying the containing space, and the utilization rate of the containing space is guaranteed. According to the technical scheme, the fluid tank comprises a tank body, the tank body comprises tank walls, the tank walls define a containing space, and the containing space is used for containing fluid; at least one detection hole is formed in the groove wall and is communicated with the accommodating space; at least part of the liquid level detection piece extends into the detection hole, and the liquid level detection piece is used for detecting the liquid level of the fluid. The fluid container is mainly used for containing fluid.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printers, in particular to a fluid tank and a 3D printer. Background Art

[0002] In light-curing 3D printing, the printing medium is injected into the storage space of the material tank, the printing platform is extended into the storage space, and then a light with a preset profile is projected into the material tank, so that the printing medium between the release film and the printing platform is solidified to form a layer of the model. Then the printing platform drives the formed model to move, and the printing medium flows back between the formed model and the release film, and then the next layer of the model is solidified, and the layers are stacked layer by layer to achieve three-dimensional molding.

[0003] During the printing process, the printing medium will be gradually consumed as it is formed. In order to avoid printing failure due to insufficient printing medium, the prior art uses a detection component to continuously monitor the liquid level of the printing medium in the material tank, and sends the liquid level information to the main controller to control the feeding of the automatic feeding device according to the liquid level height. The detection component is usually inserted into the storage space of the material tank from the upper side of the material tank to detect the liquid level by contacting and separating with the printing medium. The detection component occupies the storage space, reducing the range of the storage space that can be used for printing, resulting in insufficient space utilization. Utility Model Content

[0004] In view of this, in order to solve at least one of the above technical problems, an embodiment of the utility model provides a fluid tank and a 3D printer.

[0005] In order to achieve the above purpose, the utility model mainly provides the following technical solutions:

[0006] On the one hand, an embodiment of the utility model provides a fluid tank for 3D printing, the fluid tank comprising:

[0007] A tank body, the tank body comprising a tank wall, the tank wall enclosing a receiving space, and the receiving space is used to receive a fluid;

[0008] At least one detection hole is opened on the groove wall, and the detection hole is connected to the accommodating space;

[0009] The liquid level detection member at least partially extends into the detection hole, and is used to detect the liquid level of the fluid.

[0010] On the other hand, the utility model further provides a 3D printer, comprising any of the aforementioned fluid tanks.

[0011] The utility model proposes a fluid tank and a 3D printer, which mainly detects the liquid level of the fluid by opening a detection hole on the tank wall of the tank body, and a liquid level detection member extends into the detection hole to detect the liquid level of the fluid, so as to avoid the liquid level detection member occupying the accommodation space and ensure the utilization rate of the accommodation space. In the prior art, a detection member is used to continuously monitor the liquid level of the printing medium in the material tank, and the detection member is usually inserted into the accommodation space of the material tank from the upper side of the material tank, resulting in the detection member occupying the accommodation space, reducing the range of the accommodation space that can be used for printing, resulting in insufficient space utilization. Compared with the prior art, in the present application document, a detection hole is opened on the tank wall of the tank body, and the detection hole is connected to the accommodation space. The liquid level of the fluid in the detection hole will be the same height as the liquid level of the fluid in the accommodation space, and the liquid level detection member extends into the detection hole, and then the liquid level detection of the fluid in the accommodation space is realized by detecting the liquid level of the fluid in the detection hole, so as to realize the utilization of the tank wall space of the tank body, and the liquid level detection member will not occupy the accommodation space, and the entire area of ​​the accommodation space can be used for printing, without giving way to the liquid level detection member. At the same time, the liquid level detection component is located in the detection hole, which plays a role in protecting the liquid level detection component. The liquid level detection component is not easily contaminated and deformed by collision, thereby ensuring the accuracy of the liquid level detection component's detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 A schematic structural diagram of a fluid tank provided by an embodiment of the utility model at a first viewing angle;

[0013] Figure 2 A schematic structural diagram of a fluid tank provided by an embodiment of the utility model at a second viewing angle;

[0014] Figure 3 A schematic diagram of an exploded structure of a fluid tank provided by an embodiment of the utility model at a third viewing angle;

[0015] Figure 4 for Figure 3 A partial enlarged schematic diagram of the fluid slot in area A shown in FIG.

[0016] Figure 5 A schematic diagram of an exploded structure of a fluid tank provided by an embodiment of the utility model at a fourth viewing angle;

[0017] Figure 6 A schematic structural diagram of a fluid tank provided by an embodiment of the utility model at a fifth viewing angle;

[0018] Figure 7 A schematic structural diagram of a fluid tank provided by an embodiment of the utility model at a sixth viewing angle;

[0019] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure of the fluid groove at the BB position shown in ;

[0020] Fig. 9 A schematic structural diagram of a fluid tank provided by an embodiment of the utility model at a seventh viewing angle;

[0021] Fig.10 for Fig. 9 Schematic diagram of the cross-sectional structure of the fluid groove at the CC position shown in ;

[0022] Fig.11 for Fig.10 A partial enlarged schematic diagram of the fluid slot in the D region shown in FIG.

[0023] Fig.12 A partial structural schematic diagram of a fluid tank provided in an embodiment of the utility model;

[0024] Fig.13 A schematic structural diagram of a 3D printer provided by an embodiment of the utility model at a first viewing angle;

[0025] Fig.14 A schematic diagram of the structure of a 3D printer provided by an embodiment of the utility model at a second viewing angle;

[0026] Fig.15 A schematic diagram of the structure of a 3D printer provided by an embodiment of the utility model at a third viewing angle;

[0027] Fig.16 A schematic diagram of the structure of a 3D printer provided by an embodiment of the utility model at a fourth viewing angle;

[0028] Fig.17 A partial structural schematic diagram of a 3D printer provided by an embodiment of the utility model;

[0029] Fig.18 A schematic diagram of an exploded structure of a 3D printer provided by an embodiment of the utility model;

[0030] Fig.19 A partial structural schematic diagram of another 3D printer provided by an embodiment of the utility model;

[0031] Fig. 20 A schematic diagram of an exploded structure of another 3D printer provided by an embodiment of the utility model;

[0032] Fig.21 A schematic structural diagram of a light source assembly in a 3D printer provided by an embodiment of the utility model at a first viewing angle;

[0033] Fig. 22 A schematic structural diagram of a light source assembly in a 3D printer provided by an embodiment of the utility model at a second viewing angle;

[0034] Fig.23A schematic structural diagram of a liquid adding component and a fluid tank in a 3D printer provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0035] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of a fluid tank and a 3D printer proposed according to the utility model are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0036] On the one hand, if Figure 1-Figure 12 As shown, the embodiment of the utility model provides a fluid tank for 3D printing, and the fluid tank includes:

[0037] A tank body 100, the tank body 100 comprises a tank wall, the tank wall encloses a receiving space 101, and the receiving space 101 is used to receive a fluid;

[0038] At least one detection hole 102 is opened on the groove wall, and the detection hole 102 is connected to the accommodating space 101;

[0039] The liquid level detection member 200 at least partially extends into the detection hole 102 , and the liquid level detection member 200 is used to detect the liquid level of the fluid.

[0040] The tank body 100 can be a variety of structures that can accommodate fluids, such as the tank body 100 is a tank structure surrounded by tank walls, and the containing space 101 has a top opening. The tank structure can be a square tank, a circular tank or other irregular shapes. Alternatively, the tank body 100 can also be a closed cavity structure surrounded by tank walls. The fluid tank can have a variety of uses, such as being used for model curing and molding, that is, the tank body 100 is used as a material tank, and the containing space 101 is used to contain photocurable resin. The tank body 100 can be a tank structure, and the printing platform can enter and exit the containing space 101 through the top opening of the containing space 101 to cooperate with the light source for printing. Alternatively, the fluid tank can also be used for cleaning the model, that is, the tank body 100 is used as a cleaning bucket, and the containing space 101 is used to contain cleaning liquid. The tank body 100 can be a closed cavity structure, and the cleaning liquid can be injected into the containing space 101, and the model can be cleaned by stirring the cleaning liquid or driving the model to move. Alternatively, the fluid tank can also be used for storage. The fluid tank can be used in a variety of use scenarios where fluid is contained and liquid level detection is required, which will not be listed one by one. For the convenience of description, the following embodiments are described in detail by taking the tank body 100 as a tank-shaped structure for model curing molding as an example.

[0041] The detection hole 102 is a guide hole or drainage hole opened on the groove wall. The detection hole 102 and the accommodating space 101 form a communicating vessel. Using the principle that the liquid levels on both sides of the communicating vessel are equal, when the printing medium is relatively stable, the liquid level of the printing medium in the detection hole 102 will be equal to the liquid level of the printing medium in the accommodating space 101. Then, by detecting the liquid level of the printing medium in the detection hole 102, the liquid level of the printing medium in the accommodating space 101 can be obtained, and then the liquid level of the printing medium in the accommodating space 101 can be monitored, and the amount of printing medium added can be controlled. When the liquid level of the printing medium is less than the minimum liquid level, the printing medium is replenished in time to avoid printing failure caused by insufficient printing medium. The communication between the detection hole 102 and the accommodating space 101 can be direct or indirect, such as indirect communication through other flow channels, holes, etc. opened on the groove body 100. The detection hole 102 can be open, allowing the liquid level detection member 200 including a partial structure of the detection end to be inserted into and removed from the detection hole 102. Alternatively, the detection hole 102 may also be closed, and the liquid level detection component 200 is fixedly disposed in the detection hole 102 .

[0042] It can be understood that the detection hole 102 is opened in the groove wall, and the structural appearance of the groove body 100 can be consistent with the existing common material groove structure. The detection hole 102 is arranged in the groove wall, which makes full use of the groove wall space of the groove body 100, realizes liquid level detection, and avoids occupying the accommodating space 101. At least a part of the liquid level detection component 200 is hidden in the detection hole 102, or the liquid level detection component 200 is hidden in the groove wall of the groove body 100, thereby making the appearance of the groove body 100 simple and beautiful.

[0043] A fluid tank and a 3D printer proposed in the embodiment of the utility model mainly detect the liquid level of the fluid by opening a detection hole on the tank wall of the tank body, and a liquid level detection member extends into the detection hole to detect the liquid level of the fluid, so as to avoid the liquid level detection member occupying the accommodation space and ensure the utilization rate of the accommodation space. In the prior art, a detection member is used to continuously monitor the liquid level of the fluid in the tank, and the detection member is usually inserted into the accommodation space of the tank from the upper side of the tank, resulting in the detection member occupying the accommodation space, reducing the range of the accommodation space that can be used for printing, resulting in insufficient space utilization. Compared with the prior art, in the present application document, a detection hole is opened on the tank wall of the tank body, and the detection hole is connected to the accommodation space. The liquid level of the fluid in the detection hole will be the same height as the liquid level of the fluid in the accommodation space, and the liquid level detection member extends into the detection hole, and then the liquid level detection of the fluid in the accommodation space is realized by detecting the liquid level of the fluid in the detection hole, so as to realize the utilization of the tank wall space of the tank body, and the liquid level detection member will not occupy the accommodation space, and the entire area of ​​the accommodation space can be used for printing, without giving way to the liquid level detection member. At the same time, the liquid level detection component is located in the detection hole, which plays a role in protecting the liquid level detection component. The liquid level detection component is not easily contaminated and deformed by collision, thereby ensuring the accuracy of the liquid level detection component's detection.

[0044] In one implementation, the detection hole 102 may be directly connected to the accommodating space 101 , such as a first end of the detection hole 102 passes through the groove wall toward the inner surface of the accommodating space 101 to be connected to the accommodating space 101 .

[0045] In some other embodiments, the detection hole 102 is indirectly connected to the accommodating space 101. For example, a flow channel 103 is also provided on the groove wall, and the flow channel 103 can be arranged along the outer periphery of the accommodating space 101, and the two ends of the flow channel 103 are respectively connected to the accommodating space 101, such as being connected to the accommodating space 101 from opposite sides of the accommodating space 101. The fluid groove may also include a driving unit 900, and the driving unit 900 directly or indirectly acts on the printing medium in the flow channel 103, and then drives the printing medium to circulate between the flow channel 103 and the accommodating space 101, and can heat or dissipate heat of the printing medium. The first end of the detection hole 102 is connected to the flow channel 103, and then indirectly connected to the accommodating space 101 through the flow channel 103. The first end of the detection hole 102 can be connected to any position of the flow channel 103. In the embodiment where the detection hole 102 is connected to the flow channel 103, since the flow of the printing medium will cause liquid level fluctuations, in order to ensure accurate detection, the drive unit 900 can be stopped or slowed down intermittently and for a fixed time to drive the flow of the printing medium so that the printing medium tends to stabilize, reducing the height difference between the liquid level in the detection hole 102 and the liquid level in the accommodating space 101, thereby ensuring accurate detection.

[0046] The first end of the detection hole 102 is connected to the accommodation space 101. To ensure that the detection hole 102 can store the printing medium, it forms a communicating vessel with the accommodation space 101. The second end of the detection hole 102 is higher than the first end of the detection hole 102, and the first end of the detection hole 102 should be lower than the preset liquid level, thereby ensuring that when the printing medium is higher than the preset liquid level, even if the printing medium is less, the detection hole 102 can still maintain the same liquid level as the accommodation space 101. In the embodiment in which the first end of the detection hole 102 is indirectly connected to the accommodation space 101 through the flow channel 103, the height of the flow channel 103 is not higher than the height of the first end of the detection hole 102.

[0047] In one embodiment, the groove wall includes a surrounding wall 110 and a bottom wall 120, the surrounding wall 110 is connected to the bottom wall 120, the surrounding wall 110 extends to one side of the bottom wall 120, and the surrounding wall 110 and the bottom wall 120 enclose a receiving space 101. The vertical distance between the second end of the detection hole 102 and the bottom wall 120 is greater than the vertical distance between the first end of the detection hole 102 and the bottom wall 120, thereby ensuring that the printing medium can be stored in the detection hole 102. The vertical distance between the first end of the detection hole 102 and the bottom wall 120 is less than or equal to a preset minimum liquid level, thereby ensuring that the detection hole 102 can still maintain the same liquid level as the receiving space 101 when there is less printing medium. In some embodiments, the bottom wall 120 may include a release film, or the bottom wall 120 may include a release film and a frame, etc.

[0048] In the embodiment where the groove wall includes the surrounding wall 110 and the bottom wall 120, and the detection hole 102 is directly connected to the accommodating space 101, the first end of the detection hole 102 can pass through the upper surface of the bottom wall 120, and then directly connect to the accommodating space 101 through the bottom wall 120. Alternatively, the first end of the detection hole 102 can pass through the inner surface of the surrounding wall 110 from the area of ​​the surrounding wall 110 close to the bottom wall 120, and then directly connect to the accommodating space 101 through the surrounding wall 110. In the embodiment where the flow channel 103 is also opened on the groove wall, the flow channel 103 can be opened on the bottom wall 120, and can also be opened on the side of the surrounding wall 110 adjacent to the bottom wall 120.

[0049] The second end of the detection hole 102 can be closed, or the second end of the detection hole 102 is open, and the liquid level detection member 200 can be inserted into or removed from the detection hole 102 through the second end of the detection hole 102. In one embodiment, the second end of the detection hole 102 penetrates the side surface of the surrounding wall 110 opposite to the accommodating space 101, that is, the second end of the detection hole 102 penetrates the outer peripheral surface of the surrounding wall 110. Alternatively, the second end of the detection hole 102 penetrates the side surface of the surrounding wall 110 opposite to the bottom wall 120, that is, the second end of the detection hole 102 penetrates the top surface of the surrounding wall 110. It can be set according to the available space of the 3D printer and the specific structure of the liquid level detection member 200.

[0050] In one embodiment, the number of detection holes 102 is multiple, and each detection hole 102 can be inserted with a liquid level detection member 200, so as to avoid the problem of a single detection hole 102 being blocked and unable to detect, and can also be used to detect different liquid level heights, which will be further described in detail later. Multiple detection holes 102 are arranged adjacent to each other, so that the liquid level detection member 200 can share a connecting plate and facilitate the installation of the liquid level detection member 200. Adjacent arrangement means that the distance between adjacent detection holes 102 is less than a preset value, such as the distance between adjacent detection holes 102 is less than half of the inner diameter of the detection hole 102.

[0051] In some embodiments, the plurality of detection holes 102 are arranged in a single direction, such as the plurality of detection holes 102 are arranged in the surrounding direction of the surrounding wall 110 of the tank body 100 , which can fully utilize the space of the surrounding wall 110 and avoid increasing the thickness of the surrounding wall 110 .

[0052] In one embodiment, if Figure 6 , Figure 8 As shown, the fluid tank further includes a heat sink 300, which is connected to the tank body 100 and is used for heat dissipation. A flow channel 103 is also provided on the tank wall, the flow channel 103 is connected to the accommodation space 101, and the heat sink 300 is arranged adjacent to the flow channel 103.

[0053] During the curing process of the printing medium due to the polymerization reaction, a large amount of heat will be released. The heat accumulation will cause high temperature in the printing area, affecting the molding effect. The arrangement of the flow channel 103, the heat sink 300 and the drive unit 900 can realize the circulation cooling of the printing medium. When the printing medium flows to the relative position of the flow channel 103 and the heat sink 300, the temperature of the printing medium will flow to the heat sink 300 through the groove wall of the groove body 100, and then the heat sink 300 will accelerate the cooling of the printing medium. The heat sink 300 is arranged adjacent to the flow channel 103, which means that the distance between the heat sink 300 and the flow channel 103 is less than a preset value, such as less than 5 mm to 10 mm, which can reduce the distance of heat flowing to the heat sink 300 and accelerate the heat dissipation.

[0054] In one embodiment, the heat sink 300 includes a heat dissipation groove 310, and a plurality of heat dissipation protrusions 311 are arranged on the groove wall of the heat dissipation groove 310 close to the flow channel 103. The groove wall of the heat dissipation groove 310 close to the flow channel 103 may be approximately a wave surface, thereby increasing the heat dissipation area of ​​the groove wall of the heat dissipation groove 310 close to the flow channel 103 and increasing the heat dissipation efficiency. In some other embodiments, the heat sink 300 includes at least one heat dissipation rib 320, such as three, four, or five heat dissipation ribs 320, and multiple heat dissipation ribs 320 are arranged in parallel and spaced apart, which play a role in increasing the contact area between the slot body 100 and the air. In some other embodiments, the heat sink 300 includes both the heat dissipation groove 310 and at least one heat dissipation rib 320, and the heat dissipation rib 320 is arranged in the heat dissipation groove 310 to prevent heat from gathering in the heat dissipation groove 310.

[0055] In one embodiment, the liquid level detection member 200 includes a connecting plate 210 and at least one detection member 220, the detection member 220 is connected to the connecting plate 210, and the detection member 220 extends into the detection hole 102 to detect the liquid level of the fluid. The detection member 220 is mechanically and electrically connected to the connecting plate 210, and the connecting plate 210 is used to electrically connect to the main controller of the 3D printer. There can be multiple detection members 220, and multiple detection members 220 share the same connecting plate 210, which can reduce the space occupied by the connecting plate 210 and facilitate installation. The detection member 220 can be a probe, the number of which is at least two, and the probes are arranged in parallel and spaced apart, and the connecting plate 210 is used to support or fix the detection member 220. Optionally, the connecting plate 210 can also be a circuit board for powering the probe. For any two probes, when any one of the two probes does not contact the printing medium, the probes are electrically disconnected, and when the two probes contact the printing medium at the same time, the two probes are conductive through the printing medium, and then the liquid level can be detected by the electrical changes of the two probes.

[0056] In one embodiment, the detection members 220 are plugged into the detection holes 102 in a one-to-one correspondence. The number of detection holes 102 and detection members 220 is the same, the detection holes 102 are arranged adjacent to each other and arranged in a single direction, and the detection members 220 are arranged in a single direction and correspond to the positions of the detection holes 102, thereby reducing the area of ​​the connecting plate 210 and reducing the space occupied. There are multiple detection holes 102, which can avoid interference between the detection members 220 and prevent the detection members 220 from deforming and misleading. Alternatively, multiple detection members 220 can be located in the same detection hole 102, which can facilitate installation and processing of the detection holes 102.

[0057] The liquid level detection member 200 can be used only to detect a single liquid level, such as when the printing medium reaches a preset minimum liquid level, the liquid level detection member 200 is triggered to generate a signal. For example, the number of detection members 220 is two, and the detection member 220 is a probe, and the two probes are a liquid level probe 221 and a common probe 222, respectively. The bottom heights of the liquid level probe 221 and the common probe 222 can both be the preset minimum liquid level height. Then, when the printing medium is used to be lower than the preset minimum liquid level, the liquid level probe 221 and the common probe 222 will be separated from the printing medium at the same time, and the electrical state will change, and then a signal will be generated to indicate that the printing medium is insufficient and the printing medium needs to be added. Alternatively, in some other embodiments, the number of detection members 220 is at least three, and at least three detection members 220 include at least two liquid level probes 221 and a common probe 222. The lengths of different liquid level probes 221 are different, and they are used to cooperate with the common probe 222 to detect different liquid level heights. The number of liquid level probes 221 can be multiple, such as two, three or more. For example, there may be four liquid level probes 221, namely, the first liquid level probe, the second liquid level probe, the third liquid level probe and the fourth liquid level probe, and the lengths of the first liquid level probe, the second liquid level probe, the third liquid level probe and the fourth liquid level probe decrease in sequence. The lengths of the first liquid level probe and the common probe 222 may be consistent, and the bottom end heights of the first liquid level probe and the common probe 222 are the first preset liquid level height, and the first preset liquid level height is the preset minimum liquid level height, which is used to send a signal when the liquid level of the printing medium is lower than the preset minimum liquid level. The bottom end heights of the second liquid level probe, the third liquid level probe and the fourth liquid level probe are all higher than the first liquid level probe. If the bottom end height of the second liquid level probe is the second preset liquid level height, and the second preset liquid level height is higher than the first preset liquid level height, the second liquid level probe is used to cooperate with the common probe 222, and is used to send a signal when the liquid level of the printing medium is lower than the second preset liquid level. The third liquid level probe and the fourth liquid level probe are used to cooperate with the common probe 222, respectively, to detect the printing medium at the third preset liquid level and the fourth preset liquid level.

[0058] The setting of multiple different liquid level probes 221 can realize the monitoring of the printing medium addition process. For example, when a signal is received, the printing medium can be added to the fluid tank. The printing medium liquid level rises, and the electrical properties of the common probe 222 and the longest liquid level probe 221 or the first liquid level probe will be changed first. Then, the liquid level of the printing medium continues to rise, which will change the electrical properties between the common probe 222 and the second liquid level probe. Then, the liquid level of the printing medium continues to rise, which will trigger the electrical property change of a liquid level probe 221 with a higher bottom height in turn, until the electrical property change of the liquid level probe 221 with the highest bottom height is triggered. It can be determined that the printing medium has been added in place and the addition can be stopped. The setting of multiple liquid level probes 221 can also monitor the printing medium consumption process, which will not be repeated. In some embodiments, the printing medium consumption process can be monitored, and an early warning can be issued when the printing medium has not been consumed to the preset minimum liquid level, such as when the electrical property between the common probe 222 and any one of the liquid level probes 221 changes.

[0059] In one embodiment, the liquid level detection member 200 further includes a temperature detection member 230 . The temperature detection member 230 is connected to the connection plate 210 . The temperature detection member 230 extends into the detection hole 102 to detect the temperature of the fluid.

[0060] The temperature detection element 230 is used to detect the temperature of the printing medium and send it to the main controller. The main controller can adjust the flow rate of the printing medium and the temperature of the heating element according to the temperature of the printing medium, thereby realizing dynamic adjustment of the temperature of the printing medium. The temperature detection element 230 extends into the detection hole 102 to utilize the groove wall space of the groove body 100 and avoid the temperature detection element 230 occupying the accommodation space 101. At the same time, the temperature detection element 230 can be inserted into or removed from the detection hole 102, which can facilitate the maintenance of the temperature detection element 230.

[0061] The temperature detection member 230 can be provided separately, or an installation space is provided on the detection member 220, and the temperature detection member 230 is located in the installation space. For example, the temperature detection member 230 can be a thermistor, and the detection member 220 is a cylindrical probe, and the thermistor is integrated in the inner cavity of the probe, thereby saving space. In order to realize continuous monitoring of the temperature of the printing medium when the amount of printing medium is small, the temperature detection member 230 should be in a lower position, such as the vertical distance from the bottom wall 120 is less than a preset value, such as less than a preset minimum liquid level height. In an embodiment including a liquid level probe 221 and a common probe 222, the temperature detection member 230 can be integrated in the liquid level probe 221. In some embodiments, the liquid level probe 221 is insulated from the temperature detection member 230, such as an insulating coating can be applied to the inner wall of the liquid level probe 221 and / or the outer wall of the temperature detection member 230.

[0062] In one embodiment, if Figure 5As shown, at least one first limiting member 105 is provided on the groove wall, and a second limiting member matched with the first limiting member 105 is provided on the connecting plate 210 . The second limiting member interacts with the first limiting member 105 to limit the position of the connecting plate 210 .

[0063] The connecting plate 210 can be connected to the groove wall by bolts, and the second limiting member interacts with the first limiting member 105 to limit the connecting plate 210, thereby ensuring the stable position of the liquid level detection member 200 and facilitating the installation and positioning of the liquid level detection member 200. One of the first limiting member 105 and the second limiting member is a depression, and the other of the first limiting member 105 and the second limiting member is a protrusion. For example, the first limiting member 105 is a strip-shaped depression extending to the edge of the detection hole 102, and a protrusion matching the strip-shaped depression is provided on the connecting plate 210, and the protrusion is embedded in the strip-shaped depression. Any detection hole 102 can correspond to one or more first limiting members 105, thereby ensuring the stable position of the connecting plate 210, avoiding the position movement of the connecting plate 210 and the detection member 220, and avoiding the inaccurate detection result caused by the detection member 220 contacting the groove wall of the detection hole 102.

[0064] In one embodiment, the fluid tank further includes: a first outer cover 400 , the first outer cover 400 is connected to the tank body 100 , and the first outer cover 400 is at least disposed on the outside of the connecting plate 210 .

[0065] The first outer cover 400 is used to protect the connecting plate 210 and close the detection hole 102 to prevent dust and printing media from contaminating the connecting plate 210. The first outer cover 400 can be connected to the groove wall by bolts. In some embodiments, a limiting groove 104 is also provided on the groove wall, and the limiting groove 104 is located at the periphery of the detection hole 102. The limiting groove 104 is adapted to the contour of at least a part of the opening edge of the first outer cover 400, and the opening edge of the first outer cover 400 is embedded in the limiting groove 104. If the opening of the area corresponding to the first outer cover 400 and the groove wall is approximately rectangular, the limiting groove 104 is a rectangular annular groove, or can be a U-shaped groove, so as to limit the first outer cover 400, facilitate the installation of the first outer cover 400, and prevent the position of the first outer cover 400 from moving.

[0066] In one embodiment, the first outer cover 400 includes a first area 410 and a second area 420. The fluid tank further includes a driving unit 900, the driving unit 900 is connected to the tank body 100, the first area 410 is connected to the tank body 100, the first area 410 is at least covered outside the connecting plate 210, and the second area 420 is in contact with the driving unit 900.

[0067] The driving unit 900 may include a driving housing 910 and a driving member 920. The driving member 920 is used to drive the printing medium to flow. The driving housing 910 is covered on the outer periphery of the driving member 920 and is connected to the tank body 100. The driving member 920 may directly contact the printing medium to drive the printing medium to move. For example, the driving member 920 may be a water pump, or a magnetic pump, the fan blades of the magnetic pump are located in the flow channel 103, and the power member of the magnetic pump is located outside the tank body 100 and connected to the tank body 100. Alternatively, the driving member 920 may be a combination of a hose and a peristaltic pump, the tank body 100 is provided with a flow channel outlet hole 1031 and a flow channel inlet hole 1031, the flow channel 103 is connected to the flow channel outlet hole 1031 and the flow channel inlet hole 1031, and the two ends of the hose are respectively connected to the flow channel outlet hole 1031 and the flow channel inlet hole 1031, and the peristaltic pump abuts the hose and pushes the printing medium to flow by intermittently squeezing the hose. The first area 410 and the second area 420 of the first outer cover 400 may be arranged in an approximately L-shape, and the second area 420 abuts against the driving housing 910, thereby making the fluid groove structure more compact and the position of the first outer cover 400 more stable.

[0068] In one embodiment, if Figure 3-4 As shown, the driving unit 900 is provided with a wiring cavity and a first wiring opening 901, the second area 420 is provided with a second wiring opening 421, the second wiring opening 421 is correspondingly connected to the first wiring opening 901, and an electrical connection line is connected to the connecting plate 210, and the electrical connection line passes through the second wiring opening 421 and the first wiring opening 901 and then extends into the wiring cavity.

[0069] The electrical connection wires of the connection plate 210 are introduced into the driving housing 910 of the driving unit 900 and are electrically connected to the main controller of the 3D printer through the driving unit 900, so that the routing of the fluid tank is more regular.

[0070] On the other hand, Figure 13-20 As shown, the embodiment of the utility model further provides a 3D printer, comprising any of the aforementioned fluid tanks, and a base 600, wherein the fluid tank is connected to the base 600, such as by a buckle or a bolt. The advantages of the 3D printer comprising any of the aforementioned fluid tanks are not described in detail here.

[0071] In one embodiment, the 3D printer further includes a fan assembly 500, which is opposite to the fluid tank, or to the heat sink 300 of the fluid tank, and is used to dissipate heat for the fluid tank.

[0072] In the aforementioned embodiment where the heat sink 300 includes a heat dissipation groove 310 and at least one heat dissipation rib 320 , the fan assembly 500 corresponds to the heat dissipation groove 310 and the heat dissipation rib 320 to accelerate the flow of airflow and accelerate heat dissipation.

[0073] In one embodiment, the base 600 includes an upper base plate 610, and the fan assembly 500 includes a fan 510 and an air guide nozzle 520. The air guide nozzle 520 is provided with an air guide channel that passes through the first end of the air guide nozzle 520 and the second end of the air guide nozzle 520. The upper base plate 610 is provided with a guide hole 611, the fan 510 is located on the side of the upper base plate 610 opposite to the fluid groove, the air outlet of the fan 510 is opposite to the guide hole 611, the air guide nozzle 520 is connected to the upper base plate 610, the first end of the air guide nozzle 520 is opposite to the guide hole 611, the second end of the air guide nozzle 520 is opposite to the heat sink 300, and the airflow of the fan 510 flows to the heat sink 300 through the air guide channel.

[0074] The base 600 may also include an inner cavity, and the light source assembly, main controller and other components of the 3D printer are all located in the inner cavity, thereby protecting the components and making the 3D printer simple in appearance. The upper base plate 610 is the top plate of the base 600. The upper portion of the upper base plate 610 is used to place the fluid tank, and the fan 510 is located in the inner cavity of the base 600 below the upper base plate 610. The air outlet direction of the fan 510 can be vertically upward. The air guide channel extends from the upper base plate 610 toward the heat sink 300, and then guides the air outlet of the fan 510 to the heat sink 300, thereby achieving heat dissipation while ensuring the simple appearance of the 3D printer, protecting the fan 510, and avoiding problems such as the fan 510 being exposed and easily contaminated.

[0075] In one embodiment, the fan assembly 500 further includes a bracket 530, the fan 510 is connected to the bracket 530, and the bracket 530 is connected to the base 600. The bracket 530 may be an L-shaped bracket, and the bracket 530 is connected to the upper base plate 610 or other positions of the base 600 to fix the fan 510 so that the air outlet of the fan 510 faces the guide hole 611.

[0076] In one embodiment, the 3D printer further includes a lifting unit 700 , the lifting unit 700 is connected to the base 600 , the heat sink 300 is opposite to the lifting unit 700 , and the air guide nozzle 520 is disposed adjacent to the lifting unit 700 .

[0077] When in use, the lifting unit 700 and the air guide nozzle 520 are located behind the fluid slot, and the heat sink 300 is located on the back of the fluid slot, so that the front structure of the 3D printer is simple and the risk of the printing medium dripping onto the heat sink 300 is reduced, thereby ensuring the heat dissipation performance of the heat sink 300.

[0078] In some embodiments, the 3D printer further includes a second outer cover 800, which is connected to the base 600 and / or the lifting unit 700, and the second outer cover 800 is at least provided outside the lifting unit 700 and the air guide nozzle 520. On the one hand, the lifting unit 700 and the air guide nozzle 520 are protected, and on the other hand, the appearance of the 3D printer is made simpler.

[0079] In some embodiments, Figure 21-22 As shown, the light source assembly includes an exposure screen 10, a light guide plate 20 below the exposure screen 10, and at least one light emitting assembly 30 on one side of the light guide plate 20. The light emitting assembly 30 is used to emit light, and the light propagates in the light guide plate 20 and is emitted to the exposure screen 10. The exposure screen 10 allows light of a required shape to pass through as needed to solidify the model.

[0080] The light guide plate 20 is attached to the exposure screen 10. The light guide plate 20 can be directly attached to the exposure screen 10, such as the edge of the light guide plate 20 is fixed by a fixing device so that the light guide plate 20 is attached to the exposure screen 10 to reduce the loss of light energy. The light guide plate 20 and the exposure screen 10 can also be bonded by a transparent adhesive, etc.

[0081] The number of the light emitting components 30 is not limited, and can be one or more. The multiple light emitting components 30 are arranged around the light guide plate 20. Optionally, the multiple light emitting components 30 are evenly distributed around the light guide plate 20. The light emitting components 30 include a lamp bead 31 and a free-form surface lens 32 between the lamp bead 31 and the light guide plate 20. The diameter of the lamp bead can be 1 to 20 mm, and the light emitting angle of the light source can be 60 to 120°.

[0082] In one embodiment, if Fig.23 As shown, the 3D printer also includes a liquid adding component, which is used to add fluid to the fluid tank to solidify the model. The liquid adding component includes a material bottle 40, a liquid adding pump 50 and a viscosity detection component. The liquid adding pump 50 is connected to the material bottle 40 and the viscosity detection component respectively. The viscosity detection component is connected to the fluid tank. The liquid adding pump 50 is used to drive the fluid in the material bottle 40 into the viscosity detection component. The viscosity detection component detects the viscosity of the fluid and allows the fluid to enter the fluid tank. It can be understood that the communication between the material bottle 40, the liquid adding pump 50, the viscosity detection component and the viscosity detection component, etc., needs to be connected through a liquid pipe to ensure the transfer of the visual fluid. Communication through a liquid pipe is common knowledge in the art and will not be explained one by one.

[0083] The viscosity detection assembly includes a first container 60, a second container 70, a first electromagnetic valve 81 and a heating element 90 between the first container 60 and the second container 70, and a second electromagnetic valve 82 between the second container 70 and the fluid tank. The order of the first electromagnetic valve 81 and the heating element 90 is not limited. The first container 60 and the second container 70 may include a liquid level sensor.

[0084] It can be understood that during the process of adding fluid into the fluid tank, the first solenoid valve 81 and the second solenoid valve 82 are in a normally open state.

[0085] When detecting the viscosity of the fluid, the liquid adding pump 50 works to transport the fluid from the material bottle 40 to the first container 60. When the liquid level sensor in the first container 60 detects that the material liquid has reached the set liquid level, the liquid adding pump 50 stops working. The heating element 90 heats the first container 60 or the fluid between the first container 60 and the second container 70 to the set temperature, and the first solenoid valve 81 opens, so that the fluid in the first container 60 flows to the second container 70 under the action of gravity. When the liquid level sensor in the second container 70 detects that the material liquid has reached the set liquid level, the first solenoid valve 81 stops working. The amount of fluid in the second container 70 divided by the working time of the first solenoid valve 81 is the flow rate of the fluid at the set temperature. Different flow rates correspond to different fluid viscosities. The corresponding relationship between the flow rate and viscosity of the same fluid at different temperatures can be tested in advance, and the current viscosity of the fluid can be known.

[0086] The utility model also provides the following implementation modes:

[0087] Reference numeral 1. A fluid tank for 3D printing, the fluid tank comprising:

[0088] A tank body 100, the tank body 100 comprises a tank wall, the tank wall encloses a receiving space 101, and the receiving space 101 is used to receive a fluid;

[0089] At least one detection hole 102 is opened on the groove wall, and the detection hole 102 is connected to the accommodating space 101;

[0090] The liquid level detection member 200 at least partially extends into the detection hole 102 , and the liquid level detection member 200 is used to detect the liquid level of the fluid.

[0091] Reference numeral 2. A fluid tank according to reference numeral 1, wherein:

[0092] The first end of the detection hole 102 passes through the groove wall toward the inner surface of the accommodation space 101 to communicate with the accommodation space 101;

[0093] Alternatively, a flow channel 103 is further provided on the groove wall, the flow channel 103 is communicated with the accommodating space 101 , and the first end of the detection hole 102 is communicated with the flow channel 103 .

[0094] Reference numeral 3. A fluid tank according to reference numeral 1, wherein:

[0095] The groove wall includes a surrounding wall 110 and a bottom wall 120, the surrounding wall 110 is connected to the bottom wall 120, the surrounding wall 110 extends to one side of the bottom wall 120, and the surrounding wall 110 and the bottom wall 120 enclose a receiving space 101;

[0096] The first end of the detection hole 102 is in communication with the accommodating space 101, and the vertical distance between the second end of the detection hole 102 and the bottom wall 120 is greater than the vertical distance between the first end of the detection hole 102 and the bottom wall 120;

[0097] The vertical distance between the first end of the detection hole 102 and the bottom wall 120 is less than or equal to a preset minimum liquid level.

[0098] Reference numeral 4. A fluid tank according to reference numeral 1, wherein:

[0099] The groove wall includes a surrounding wall 110 and a bottom wall 120, the surrounding wall 110 is connected to the bottom wall 120, the surrounding wall 110 extends to one side of the bottom wall 120, and the surrounding wall 110 and the bottom wall 120 enclose a receiving space 101;

[0100] The second end of the detection hole 102 passes through a side surface of the surrounding wall 110 facing away from the accommodation space 101;

[0101] Alternatively, the second end of the detection hole 102 passes through a surface of the surrounding wall 110 opposite to the bottom wall 120 .

[0102] Reference numeral 5. A fluid tank according to reference numeral 1, wherein:

[0103] The number of the detection holes 102 is multiple;

[0104] A plurality of detection holes 102 are arranged adjacent to each other;

[0105] and / or, the plurality of detection holes 102 are arranged in a single direction;

[0106] And / or, the plurality of detection holes 102 are arranged in the surrounding direction of the surrounding wall 110 of the tank body 100 .

[0107] Reference numeral 6. The fluid tank according to reference numeral 1, wherein the fluid tank further comprises:

[0108] A heat sink 300, the heat sink 300 is connected to the tank body 100, and the heat sink 300 is used for heat dissipation;

[0109] A flow channel 103 is also formed on the groove wall. The flow channel 103 is communicated with the accommodating space 101 . The heat sink 300 is disposed adjacent to the flow channel 103 .

[0110] Reference numeral 7. A fluid tank according to reference numeral 6, wherein:

[0111] The heat sink 300 includes a heat dissipation groove 310 , and a plurality of heat dissipation protrusions 311 are arranged on the groove wall of the heat dissipation groove 310 close to the flow channel 103 ;

[0112] Alternatively, the heat sink 300 includes at least one heat dissipation rib 320;

[0113] Alternatively, the heat sink 300 includes a heat dissipation groove 310 and at least one heat dissipation rib 320 , and the heat dissipation rib 320 is disposed in the heat dissipation groove 310 .

[0114] Reference numeral 8. A fluid tank according to reference numeral 1, wherein:

[0115] The liquid level detection member 200 includes a connecting plate 210 and at least one detection member 220 . The detection member 220 is connected to the connecting plate 210 . The detection member 220 extends into the detection hole 102 to detect the liquid level of the fluid.

[0116] Reference numeral 9. A fluid tank according to reference numeral 8, wherein:

[0117] The detection members 220 are plugged into the detection holes 102 in a one-to-one correspondence; or the detection members 220 are all located in the same detection hole 102 .

[0118] Reference numeral 10. A fluid tank according to reference numeral 8, wherein:

[0119] The detection member 220 is a probe, and the number of the detection members 220 is at least two;

[0120] And / or, the number of the detection members 220 is at least three, the at least three detection members 220 include at least two liquid level probes 221 and a common probe 222, the length of the liquid level probe 221 is not greater than the length of the common probe 222, and different liquid level probes 221 have different lengths.

[0121] Reference numeral 11. A fluid tank according to reference numeral 8, wherein:

[0122] The connecting plate 210 is a circuit board. The liquid level detecting element 200 further includes a temperature detecting element 230 . The temperature detecting element 230 is connected to the connecting plate 210 . The temperature detecting element 230 extends into the detecting hole 102 to detect the temperature of the fluid.

[0123] Reference numeral 12. A fluid tank according to reference numeral 11, wherein:

[0124] An installation space is provided on the detection element 220 , and the temperature detection element 230 is located in the installation space.

[0125] Reference numeral 13. A fluid tank according to reference numeral 11, wherein:

[0126] The temperature sensing member 230 includes a thermistor.

[0127] Reference numeral 14. A fluid tank according to reference numeral 8, wherein:

[0128] At least one first limiting member 105 is also provided on the groove wall, and a second limiting member matching the first limiting member 105 is provided on the connecting plate 210, and the second limiting member interacts with the first limiting member 105 to limit the position of the connecting plate 210;

[0129] One of the first limiting member 105 and the second limiting member is a depression, and the other of the first limiting member 105 and the second limiting member is a protrusion, and the protrusion is embedded in the depression.

[0130] Reference numeral 15. The fluid tank according to reference numeral 8, wherein the fluid tank further comprises:

[0131] A first outer cover 400, the first outer cover 400 is connected to the tank body 100, and the first outer cover 400 is at least disposed on the outside of the connecting plate 210;

[0132] A limiting groove 104 is also provided on the groove wall. The limiting groove 104 is located at the periphery of the detection hole 102 . The limiting groove 104 matches the contour of at least a portion of the opening edge of the first outer cover 400 . The opening edge of the first outer cover 400 is embedded in the limiting groove 104 .

[0133] Reference numeral 16. A fluid tank according to reference numeral 15, wherein:

[0134] The first housing 400 includes a first region 410 and a second region 420;

[0135] The fluid tank further includes a driving unit 900, the driving unit 900 is connected to the tank body 100, the first area 410 is connected to the tank body 100, the first area 410 is at least covered outside the connecting plate 210, and the second area 420 is in contact with the driving unit 900;

[0136] The driving unit 900 is provided with a wiring cavity and a first wiring opening 901, the second area 420 is provided with a second wiring opening 421, the second wiring opening 421 is correspondingly connected to the first wiring opening 901, and an electrical connection line is connected to the connecting plate 210, and the electrical connection line passes through the second wiring opening 421 and the first wiring opening 901 and then extends into the wiring cavity.

[0137] Label 17. A 3D printer, comprising the fluid tank of any one of labels 1-16.

[0138] Reference number 18. A 3D printer according to reference number 17, wherein the 3D printer further comprises:

[0139] A fan assembly 500, the fan assembly 500 is opposite to the fluid tank and is used to dissipate heat for the fluid tank;

[0140] The fluid tank includes a heat sink 300 , and the fan assembly 500 is opposite to the heat sink 300 .

[0141] Reference number 19. A 3D printer according to reference number 17, wherein the 3D printer further comprises:

[0142] A base 600, wherein the fluid tank is connected to the base 600;

[0143] The base 600 includes an upper base plate 610, and the fan assembly 500 includes a fan 510 and an air guide nozzle 520. The air guide nozzle 520 is provided with an air guide channel that passes through the first end of the air guide nozzle 520 and the second end of the air guide nozzle 520;

[0144] A guide hole 611 is provided on the upper base plate 610, and the fan 510 is located on the side of the upper base plate 610 opposite to the fluid groove. The air outlet of the fan 510 is opposite to the guide hole 611, and the air guide nozzle 520 is connected to the upper base plate 610. The first end of the air guide nozzle 520 is opposite to the guide hole 611, and the second end of the air guide nozzle 520 is opposite to the heat sink 300. The airflow of the fan 510 flows to the heat sink 300 through the air guide channel; the fan assembly 500 also includes a bracket 530, the fan 510 is connected to the bracket 530, and the bracket 530 is connected to the base 600.

[0145] Reference number 20. A 3D printer according to reference number 19, wherein the 3D printer further comprises:

[0146] A lifting unit 700, the lifting unit 700 is connected to the base 600, the heat sink 300 is opposite to the lifting unit 700, and the air guide nozzle 520 is disposed adjacent to the lifting unit 700;

[0147] The 3D printer further includes a second outer cover 800 , which is connected to the base 600 and / or the lifting unit 700 . The second outer cover 800 is at least disposed on the outside of the lifting unit 700 and the air guide nozzle 520 .

[0148] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A fluid tank for 3D printing, characterized in that: The fluid tank comprises: A tank body, the tank body comprising a tank wall, the tank wall enclosing a receiving space, the receiving space being used to receive a fluid; At least one detection hole is formed on the groove wall, and the detection hole is connected to the accommodating space; A liquid level detection member, wherein the liquid level detection member at least partially extends into the detection hole, and the liquid level detection member is used to detect the liquid level of the fluid.

2. The fluid tank according to claim 1, characterized in that: The first end of the detection hole penetrates the groove wall toward the inner surface of the accommodating space to communicate with the accommodating space; Alternatively, a flow channel is further provided on the groove wall, the flow channel is communicated with the accommodating space, and the first end of the detection hole is communicated with the flow channel.

3. The fluid tank according to claim 1, characterized in that: The groove wall includes a surrounding wall and a bottom wall, the surrounding wall is connected to the bottom wall, the surrounding wall extends to one side of the bottom wall, and the surrounding wall and the bottom wall enclose the accommodation space; The first end of the detection hole is connected to the accommodating space, and the vertical distance between the second end of the detection hole and the bottom wall is greater than the vertical distance between the first end of the detection hole and the bottom wall; A vertical distance between the first end of the detection hole and the bottom wall is less than or equal to a preset minimum liquid level.

4. The fluid tank according to claim 1, characterized in that: The groove wall includes a surrounding wall and a bottom wall, the surrounding wall is connected to the bottom wall, the surrounding wall extends to one side of the bottom wall, and the surrounding wall and the bottom wall enclose the accommodation space; The second end of the detection hole passes through a side surface of the surrounding wall opposite to the accommodating space; Alternatively, the second end of the detection hole passes through a side surface of the surrounding wall opposite to the bottom wall.

5. The fluid tank according to claim 1, characterized in that: The number of the detection holes is multiple; A plurality of the detection holes are arranged adjacent to each other; And / or, the plurality of detection holes are arranged in a single direction; And / or, the plurality of detection holes are arranged in the surrounding direction of the surrounding wall of the tank body.

6. The fluid tank according to claim 1, characterized in that: The fluid tank further comprises: A heat sink, the heat sink is connected to the tank body and is used for dissipating heat; A flow channel is also provided on the groove wall, the flow channel is communicated with the accommodating space, and the heat sink is arranged adjacent to the flow channel.

7. The fluid tank according to claim 6, characterized in that: The heat sink comprises a heat dissipation groove, and a plurality of heat dissipation protrusions are arranged on the groove wall of the heat dissipation groove close to the flow channel; Alternatively, the heat sink includes at least one heat dissipation rib; Alternatively, the heat sink comprises a heat dissipation groove and at least one heat dissipation rib, and the heat dissipation rib is arranged in the heat dissipation groove.

8. The fluid tank according to claim 1, characterized in that: The liquid level detection member comprises a connecting plate and at least one detection member, wherein the detection member is connected to the connecting plate and extends into the detection hole to detect the liquid level of the fluid.

9. The fluid tank according to claim 8, characterized in that: The detection members are plugged into the detection holes in a one-to-one correspondence; or the detection members are all located in the same detection hole.

10. The fluid tank according to claim 8, characterized in that: The detection member is a probe, and the number of the detection members is at least two; And / or, the number of the detection members is at least three, the at least three detection members include at least two liquid level probes and a common probe, the length of the liquid level probe is not greater than the length of the common probe, and the lengths of different liquid level probes are different.

11. The fluid tank according to claim 8, characterized in that: The connecting plate is a circuit board, and the liquid level detecting member further comprises a temperature detecting member, which is connected to the connecting plate and extends into the detecting hole to detect the temperature of the fluid.

12. The fluid tank according to claim 11, characterized in that: An installation space is provided on the detection component, and the temperature detection component is located in the installation space.

13. The fluid tank according to claim 11, characterized in that: The temperature detection element includes a thermistor.

14. The fluid tank according to claim 8, characterized in that: At least one first limiting member is also provided on the groove wall, and a second limiting member matching the first limiting member is provided on the connecting plate, and the second limiting member interacts with the first limiting member to limit the position of the connecting plate; One of the first limiting member and the second limiting member is a depression, and the other of the first limiting member and the second limiting member is a protrusion, and the protrusion is embedded in the depression.

15. The fluid tank according to claim 8, characterized in that: The fluid tank further comprises: A first outer cover, the first outer cover is connected to the tank body, and the first outer cover is at least disposed on the outer side of the connecting plate; The groove wall is also provided with a limiting groove, the limiting groove is located at the periphery of the detection hole, the limiting groove is adapted to the contour of at least a portion of the opening edge of the first outer cover, and the opening edge of the first outer cover is embedded in the limiting groove.

16. The fluid tank according to claim 15, characterized in that: The first housing includes a first region and a second region; The fluid tank further comprises a driving unit, the driving unit is connected to the tank body, the first area is connected to the tank body, the first area is at least covered on the outside of the connecting plate, and the second area is in contact with the driving unit; The drive unit is provided with a wiring inner cavity and a first wiring opening, the second area is provided with a second wiring opening, the second wiring opening is correspondingly connected to the first wiring opening, an electrical connection line is connected to the connecting plate, the electrical connection line passes through the second wiring opening and the first wiring opening, and then extends into the wiring inner cavity.

17. A 3D printer, characterized in that: A fluid tank comprising the fluid tank according to any one of claims 1 to 16.

18. The 3D printer according to claim 17, characterized in that: The 3D printer also includes: A fan assembly, the fan assembly is opposite to the fluid tank and is used to dissipate heat for the fluid tank; The fluid tank includes a heat sink, and the fan assembly is opposite to the heat sink.

19. The 3D printer according to claim 17, characterized in that: The 3D printer also includes: A base, the fluid tank being connected to the base; The base comprises an upper bottom plate, the fan assembly comprises a fan and an air guide nozzle, and the air guide nozzle is provided with an air guide channel passing through the first end of the air guide nozzle and the second end of the air guide nozzle; A guide hole is provided on the upper bottom plate, the fan is located on a side of the upper bottom plate opposite to the fluid slot, the air outlet of the fan is opposite to the guide hole, the air guide nozzle is connected to the upper bottom plate, the first end of the air guide nozzle is opposite to the guide hole, the second end of the air guide nozzle is opposite to the heat sink, and the airflow of the fan flows to the heat sink through the air guide channel; The fan assembly also includes a bracket, the fan is connected to the bracket, and the bracket is connected to the base.

20. The 3D printer according to claim 19, characterized in that: The 3D printer also includes: A lifting unit, wherein the lifting unit is connected to the base, the heat sink is opposite to the lifting unit, and the air guide nozzle is arranged adjacent to the lifting unit; The 3D printer further comprises a second outer cover, the second outer cover is connected to the base and / or the lifting unit, and the second outer cover is at least provided to cover the lifting unit and the outer side of the air guide nozzle.

Images