Three-dimensional printing equipment

Abstract

The utility model provides a three-dimensional printing device, which comprises a base body, a printing cavity, a plurality of printing nozzles, a plurality of printing nozzles and a plurality of printing nozzles, the resin container is connected with the base body and located in the printing cavity; the guide column and the forming platform are connected and arranged in the printing cavity, and the forming platform can move in the direction close to or away from the resin containing cavity along the guide column so as to print a model; and the material supply device is used for supplying materials to the resin container, the material supply device comprises a material bottle, and the material bottle is connected with the guide column and arranged outside the printing cavity. Therefore, the material bottle can be maintained outside the printing cavity, the operation space is large, and operation is convenient.

Description

Technical Field

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

[0002] 3D Printer (3DP) is a kind of cumulative manufacturing technology and a machine of rapid prototyping technology. It is based on a digital model file and uses special wax materials, powdered metal or plastic and other adhesive materials to print multiple layers of adhesive materials in sequence to create three-dimensional objects.

[0003] Among them, the photocuring 3D printing equipment adopts photocuring printing technology. Photocuring uses photosensitive resin as raw material and focuses laser of specific wavelength and intensity onto the surface of the photocuring material to solidify it from point to line and from line to surface in sequence, completing the solidification of one layer, and then moving the height of a layer in the vertical direction, and then solidifying another layer, and stacking layers in sequence to form a three-dimensional entity.

[0004] Existing photocuring 3D printing equipment usually has an automatic feeding device to add resin raw materials to the resin container. Since the material bottle of the automatic feeding device is usually arranged inside the printing chamber, it is inconvenient to disassemble and maintain the material bottle; and it is also necessary to provide a receiving seat for placing the material bottle on the base of the 3D printing equipment, which increases the base volume of the 3D printing equipment.

[0005] For example, the prior art with publication number CN112477113A discloses a DLP three-dimensional printer, including a housing 1, a control unit, a lifting stage 2 and a resin tank 3 are arranged in the housing 1, and a DLP projection device is located below the resin tank 3, the lifting stage is arranged above the resin tank 3 and connected to the lifting screw 22, so that it can move up and down along the lifting screw 22. At the same time, it also includes a raw material storage device that communicates with the control unit and is connected to the resin tank 3 through a discharge pipeline 12, and a distance sensor 4 arranged above the resin tank 3, the discharge pipeline 12 is provided with a solenoid valve 10 for opening and closing the pipeline, and the distance sensor 4 is arranged directly above the resin tank 3. Furthermore, the raw material storage device includes a raw material storage tank 7 disposed in the housing 1, and the raw material storage tank 7 is separated from the resin tank 3 by a vertical partition 5, and a through hole is provided on the vertical partition 5 for the discharge pipeline 12 to pass through. The raw material storage tank 7 stores the molding material of the photocurable resin solution, and its discharge port is connected to the resin tank 3 through the discharge pipeline 12, and the entire discharge pipeline 12 is opened and closed by the switch of the solenoid valve 10. It can be seen that the raw material storage tank 7 is located in the housing 1, and the material bottle is inconvenient to repair.

[0006] Therefore, how to provide a three-dimensional printing device that is convenient for repairing material bottles has become a demand of the prior art. Utility Model Content

[0007] In view of this, the utility model provides a three-dimensional printing device, which can perform maintenance operations on material bottles outside the printing chamber, and has a large operating space and is convenient to operate.

[0008] An embodiment of the utility model provides a three-dimensional printing device, comprising: a base body, in which a printing chamber is arranged; a resin container, which is connected to the base body and is located in the printing chamber; a guide column and a molding platform, which are connected to the molding platform and are arranged in the printing chamber, and the molding platform can move along the guide column toward or away from the resin container to print a model; a feeding device, which is used to feed the resin container, and the feeding device comprises a material bottle, which is connected to the guide column and is arranged outside the printing chamber.

[0009] Furthermore, the three-dimensional printing device also includes: a connecting component, which is arranged on the guide column and the material bottle and is used to connect the guide column and the material bottle; the base includes a base and a cover body, the cover body is movably connected to the base and can be covered on the base to form a printing chamber, the resin container and the guide column are connected to the base, and the cover body is provided with an avoidance structure for avoiding the connecting component.

[0010] Furthermore, the feeding device also includes a feeding pipe, which is used to connect the material bottle and the resin container through the avoidance gap.

[0011] Furthermore, the connecting assembly includes a fixing member, which includes a first connecting member, and a second connecting member and a third connecting member connected to each other, wherein the third connecting member is connected to the guide column; the first connecting member passes through the second connecting member and the bottle to connect the second connecting member to the bottle.

[0012] Furthermore, the second connecting member includes a U-shaped block, the U-shaped block includes two feet located at both ends, and a connecting part connecting the two feet, the connecting part is connected to the third connecting member, and the feet are provided with a first through hole; limiting grooves are provided on both sides of the bottle, the shape of the limiting grooves matches the shape of the feet, and a first connecting hole corresponding to the first through hole is provided in the limiting grooves; the first connecting member passes through the first through hole and the first connecting hole to connect the second connecting member to the bottle.

[0013] Furthermore, the connecting assembly also includes a limiter and a positioning member, the limiter is connected to the guide column and is located below the second connecting member, and the positioning member is connected to the bottle and is located below the limiter groove; the positioning member is inserted into the limiter to limit the relative position of the bottle and the guide column.

[0014] Furthermore, the limiting member includes a limiting block arranged on the guide column, and a slot is provided on the side of the limiting block facing the bottle; the positioning member includes a positioning block arranged on the bottle, and a plug rod corresponding to the slot is provided on the direction of the positioning block away from the bottle.

[0015] Furthermore, along the extension direction of the guide column, the distance between the second connecting member and the limiting member is equal to the distance between the limiting groove and the positioning member; wherein the positioning member and the third connecting member are both T-blocks.

[0016] Furthermore, a feed inlet and a delivery inlet are provided on the material bottle; the feed inlet is used to add resin into the material bottle; the delivery inlet is connected to one end of the delivery pipe and is used to supply resin to the resin container.

[0017] Furthermore, the feeding device also includes a feed pump and a solenoid valve. The feed pump is connected to the other end of the feed pipe and is used to extract the resin in the material bottle into the resin container; the solenoid valve is connected to the feed pump and is used to control the opening or closing of the feed pump.

[0018] The three-dimensional printing device provided by the embodiment of the utility model comprises a base, a guide column and a feeding device. Among them, the base is provided with a printing chamber and a resin container located in the printing chamber, the resin container is used to contain resin raw materials, the guide column is located in the printing chamber, and the guide column is located on one side of the resin container. Further, the printing device also includes a printing platform located in the printing chamber, the printing platform is connected to the guide column to move along the guide column, and the printing platform is located above the resin container, so that the printing platform moves along the guide column to approach the resin container or away from the resin container to realize the printing of the model. By setting the feeding device to feed the resin container, the user's frequent manual feeding operation is simplified, the printing experience is improved, and at the same time, it can meet the continuous printing of models with large volume and more materials, and expand the scope of use of the product. By detachably connecting the material bottle of the feeding device with the guide column and arranging the material bottle outside the printing chamber, the material bottle can be disassembled and repaired outside the printing chamber without opening the printing chamber, which simplifies the user's operation, and the operation space is large, which is convenient for operation. Furthermore, since the material bottle is arranged outside the printing chamber by being connected to the guide post, there is no need to additionally arrange a receiving seat for placing the material bottle on the base of the base body, which can reduce the volume of the base.

[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Various other advantages and benefits will become apparent to those skilled in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used throughout the accompanying drawings to represent the same components. Among them:

[0021] Figure 1A schematic structural diagram of a three-dimensional printing device provided by an embodiment of the utility model is shown;

[0022] Figure 2 Shows Figure 1 A schematic structural diagram of a perspective of the illustrated embodiment;

[0023] Figure 3 A partial structural schematic diagram of a three-dimensional printing device provided by an embodiment of the utility model is shown;

[0024] Figure 4 Shows Figure 3 A schematic structural diagram of a perspective of the illustrated embodiment;

[0025] Figure 5 A partial structural schematic diagram of a three-dimensional printing device provided in another embodiment of the utility model is shown;

[0026] Figure 6 Shows Figure 5 Exploded schematic diagram of the illustrated embodiment.

[0027] in, Figures 1 to 6 The corresponding relationship between the reference numerals and the component names is as follows:

[0028] 100 printing device, 110 substrate, 111 printing chamber, 112 resin container, 113 base, 114 cover, 1141 avoidance structure, 120 guide column, 130 feeding device, 131 material bottle, 1311 first connecting hole, 1312 limiting groove, 1313 feeding port, 1314 feeding port, 132 feeding pipe, 140 connecting assembly, 141 first connecting member, 142 second connecting member, 1421 foot, 1422 connecting part, 143 limiting member, 1431 slot, 144 positioning member, 1441 insertion rod, 145 third connecting member. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0031] Refer to the following Figures 1 to 6The three-dimensional printing device 100 provided according to some embodiments of the present invention is described. Specifically, the three-dimensional printing device 100 may be a light-curing three-dimensional printer.

[0032] like Figure 1 , Figure 2 and Figure 3 As shown, the three-dimensional printing device 100 provided by the embodiment of the utility model includes a base 110, a resin container 112, a guide post 120, a molding platform (not shown in the figure) and a feeding device 130. The base 110 is provided with a printing chamber 111, the resin container 112 is connected to the base 110 and is located in the printing chamber 111, the resin container 112 is used to contain resin raw materials, the guide post 120 is connected to the molding platform and is arranged in the printing chamber 111, wherein the guide post 120 is located on one side of the resin container 112, and the molding platform is connected to the guide post 120 to move along the guide post 120, specifically, the molding platform is located above the resin container 112, so that the molding platform can move along the guide post 120 toward or away from the resin container 112 to print the model. The feeding device 130 is used to supply resin to the resin container 112 . The feeding device 130 includes a material bottle 131 . The material bottle 131 is connected to the guide post 120 and is disposed outside the printing chamber 111 .

[0033] The guide post 120 is a Z-axis column, that is, the guide post 120 is located in the printing chamber 111 along the Z-axis direction. Figure 3 As shown by the arrow in . It can be understood that a light source is also provided in the base 110, and the light emitted by the light source can irradiate the position where the resin container 112 is located. The molding platform of the three-dimensional printing device 100 is movably provided on the guide column 120 and can move along the guide column 120, so that the molding platform can move along the guide column 120 in the Z-axis direction to approach the resin container 112 or move away from the resin container 112. Therefore, the molding platform is adjusted to a suitable position along the Z-axis on the guide column 120 relative to the resin container 112, and the light source emits a laser of a specific wavelength and intensity to focus on the resin surface in the resin container 112, so that it solidifies sequentially from point to line and from line to surface, completing the solidification of one layer, and then the molding platform is moved along the Z-axis in the direction away from the resin container 112 by the height of a layer, and then another layer is solidified, and layers are stacked in sequence to form a three-dimensional entity.

[0034] Among them, by setting up a feeding device 130 to feed the resin container 112, the user's frequent manual refilling operation is simplified, and the printing experience is improved. At the same time, the continuous printing of the three-dimensional printing device 100 can be achieved, such as being able to meet the continuous printing of models with larger volume and more materials, thereby expanding the scope of use of the product.

[0035] In the feeding device of the related art, the material bottle is usually movably arranged in the printing chamber, the material bottle's discharge port is arranged downward, and a sealing plug assembly is arranged at the discharge port of the material bottle. When the material bottle moves to make the sealing plug assembly abut against the resin container, the sealing plug assembly is squeezed to open the discharge port to feed the resin container. When the material bottle moves to separate the sealing assembly from the resin container, the sealing plug assembly releases pressure to seal the discharge port and stop feeding the resin container, thereby realizing automatic feeding of the resin container. However, since the material bottle is located in the printing chamber, when the material bottle needs to be repaired or disassembled, the printing chamber needs to be opened, and the repair or disassembly operation needs to be performed inside the printing chamber. The operation is cumbersome, and the operation space is limited, which is inconvenient for users to operate.

[0036] In view of this, if Figure 1 and Figure 3 As shown, the three-dimensional printing device 100 provided by the embodiment of the utility model sets the material bottle 131 of the feeding device 130 outside the printing chamber 111 and connects it to the guide column 120, so that the material bottle 131 can be repaired outside the printing chamber 111 without opening the printing chamber 111, which simplifies the user's operation, and the operation space is large and convenient to operate. Among them, when the material bottle is detachably connected to the guide column, the material bottle 131 can be repaired and disassembled outside the printing chamber 111, and the operation space is large and easy to operate. Furthermore, since the material bottle is set outside the printing chamber by connecting it to the guide column, there is no need to set an additional receiving seat for placing the material bottle on the base of the base, which can reduce the volume of the base.

[0037] In some possible implementations provided by the present utility model, such as Figure 3 , Figure 5 As shown, the three-dimensional printing device 100 further includes a connecting assembly 140, which is disposed on the guide column 120 and the material bottle 131 and is used to connect the guide column 120 and the material bottle 131, that is, the guide column 120 and the material bottle 131 are connected through the connecting assembly 140. Among them, the connecting assembly 140 may include at least one of a connecting member such as a bolt, a clamping structure, a plugging structure, and a magnetic structure, that is, the guide column 120 and the material bottle 131 can be detachably connected through at least one of a connecting member such as a bolt, a clamping structure, a plugging structure, and a magnetic connection, so as to facilitate the disassembly and assembly operation of the material bottle 131 outside the printing chamber 111.

[0038] Among them, Figure 1 and Figure 2As shown, the base 110 includes a base 113 and a cover 114, the cover 114 is movably connected to the base 113 and can be covered on the base 113 to form a printing chamber 111, the resin container 112 and the guide column 120 are connected to the base 113, such as the resin container 112 is connected to the top of the base 113, the guide column 120 can be penetrated by the base 113 and at least part of the guide column 120 is located above the base 113, and the molding platform is connected to the guide column 120 above the base 113 and is located above the resin container 112. The cover body 114 is provided with an avoidance structure 1141 for avoiding the connection component 140. After the cover body 114 is covered on the base 113 to form the printing chamber 111, the connection component 140 passes through the avoidance structure 1141 to connect the inside and the outside of the printing chamber 111 to ensure that the material bottle 131 can be detachably connected to the guide column 120 through the connection component 140 and is located outside the printing chamber 111, which is convenient for maintenance operations and disassembly operations.

[0039] In some possible implementations provided by the present utility model, such as Figure 1 and Figure 3 As shown, the connection assembly 140 is located above the base 113, that is, the material bottle 131 is connected to the guide column 120 located above the base 113 through the connection assembly 140, and the avoidance structure 1141 includes a avoidance gap set at the edge of the cover body 114, such as the avoidance structure 1141 is a avoidance gap set at the edge of the cover body 114 close to the base 113. In this way, when the cover body 114 moves in the direction close to the base 113, the connection assembly 140 can be gradually located in the avoidance gap without interfering with the cover body 114, so that the cover body 114 can be connected with the base 113 to be covered on the base 113 and form the printing chamber 111. At this time, the connection assembly 140 connects the inside and outside of the printing chamber 111 through the avoidance gap, so that the material bottle 131 can be located outside the printing chamber 111. When the cover 114 moves away from the base 113 , the avoidance gap will gradually move away from the connecting component 140 , and the connecting component 140 will not interfere with the cover 114 , so that the cover 114 can be completely or partially separated from the base 113 to open the printing chamber 111 .

[0040] Since the avoidance notch is located at the edge of the cover body 114 close to the base 113, it is easy to process and has a good prompting effect. For example, during the installation of the cover body 114, the position of the avoidance notch is aligned with the connecting component 140, so that the installation of the cover body 114 and the base 113 can be completed quickly and accurately, which is conducive to improving assembly efficiency and assembly accuracy.

[0041] Since the connecting component 140 is located above the base 113, an avoidance gap is set on the cover body 114 to avoid the connecting component 140. Such a setting, by reasonably setting the structure of the connecting component 140, does not need to improve the structure of the base 113, and the material bottle 131 can be detachably connected to the guide column 120 through the connecting component 140 without interfering with the base 113, which is beneficial to reducing the processing cost of the printing device 100.

[0042] In the above embodiment, if Figure 1 and Figure 3 As shown, the feeding device 130 further includes a feeding pipe 132, which is connected to the material bottle 131 and the resin container 112 through the avoidance structure 1141, and can then supply the resin raw material contained in the material bottle 131 to the resin container 112, so as to realize the feeding operation to the resin container 112. Since the feeding pipe 132 is connected to the material bottle 131 and the resin container 112 through the avoidance structure, it is simplified to set a through hole for the feeding pipe 132 to pass through on the cover body 114 or the base 113, thereby simplifying the structure and facilitating processing.

[0043] In some possible implementations provided by the present utility model, such as Figure 3 , Figure 5 and Figure 6 As shown, the connecting assembly 140 includes a fixing member, which includes a first connecting member 141, a second connecting member 142 and a third connecting member 145. The second connecting member 142 and the third connecting member 145 are connected to each other, and the third connecting member 145 is connected to the guide column 120. The first connecting member 141 passes through the second connecting member 142 and the bottle 131 to connect the second connecting member 142 and the bottle 131, thereby realizing a detachable connection between the bottle 131 and the guide column 120.

[0044] The third connecting member 145 can be detachably connected to the guide column 120, and the second connecting member 142 can be detachably connected to the third connecting member 145, such as the third connecting member 145 can be detachably connected to the guide column 120 by bolts, and the second connecting member 142 can be detachably connected to the third connecting member 145 by bolts. It can be understood that the third connecting member 145 can be detachably connected to the guide column 120, and the second connecting member 142 can be detachably connected to the third connecting member 145 by other means. The provision of the third connecting member 145 can ensure that part of the second connecting member 142 extends to the outside of the printing chamber 111, so as to ensure that the material bottle 131 can be located outside the printing chamber 111 after being connected to the second connecting member 142.

[0045] Specifically, the second connecting member 142 may be provided with a first through hole, the first connecting member 141 may be a bolt, and the material bottle 131 is provided with a first connecting hole 1311, the first connecting hole 1311 may be a threaded hole, and is located outside the printing chamber 111, and then outside the printing chamber 111, the material bottle 131 can be connected to the second connecting member 142 by passing the bolt through the first through hole and connecting with the first connecting hole 1311, and then the material bottle 131 can be reliably connected to the guide column 120, with a large operating space and convenient operation, which facilitates the disassembly, assembly and maintenance of the material bottle 131.

[0046] In the above embodiment, if Figure 6 As shown, the second connecting member 142 includes a U-shaped block, and the U-shaped block includes two feet 1421 located at both ends, and a connecting portion 1422 connecting the two feet 1421, and the connecting portion 1422 is connected to the third connecting member 145, such as connecting the connecting portion 1412 with the third connecting member 145 by bolts, so as to fix the U-shaped block on the third connecting member 145, and at the same time, the foot 1421 of the U-shaped block is also provided with a first through hole. Among them, the two sides of the bottle 131 are provided with a limiting groove 1312, the shape of the limiting groove 1312 matches the shape of the foot 1411, the first connecting hole 1311 is distributed in the limiting groove 1312, and the limiting groove 1312 is provided with a first connecting hole 1311 corresponding to the first through hole, and the first connecting member 141 passes through the first through hole and is connected with the first connecting hole 1311, so that the second connecting member 142 is connected to the bottle 131.

[0047] With such an arrangement, during the process of assembling the material bottle 131 to the guide column 120, the material bottle 131 is moved so that the limiting groove 1312 is opposite to the foot 1411 of the U-shaped block, and the foot 1411 is inserted into the limiting groove 1312, so that the material bottle 131 and the U-shaped block can be pre-positioned. Then, the first connecting member 141 is connected to the first connecting hole 1311 in the limiting groove 1312 through the first through hole of the foot 1411 of the U-shaped block outside the printing chamber 111, so that the material bottle 131 and the second connecting member 142 can be reliably and stably fixed, and the operation is simple.

[0048] Among them, the setting of the limiting groove 1312 plays a good limiting and supporting role, which can reduce the possibility of the second connecting member 142 sliding down along the bottle 131, and further improve the reliability and stability of the connection between the bottle 131 and the second connecting member 142.

[0049] Among them, the second connecting member 142 is set as a U-shaped block, and the two feet 1411 of the U-shaped block are used to connect with the material bottle 131, which can improve the reliability and stability of the connection between the second connecting member 142 and the material bottle 131, and then the connecting part 1412 connecting the two feet 1411 is connected to the guide column 120, so that the material bottle 131 and the guide column 120 can be reliably and stably connected, the structure is simple, the processing is convenient, and the cost is low.

[0050] In some possible implementations provided by the present utility model, such as Figure 3 , Figure 5 and Figure 6 As shown, the connecting assembly 140 also includes a limit member 143 and a positioning member 144. The limit member 143 is connected to the guide column 120 and is located below the second connecting member 142. The positioning member 144 is connected to the bottle 131 and is located below the limit groove 1312. The positioning member 144 is inserted into the limit member 143 to limit the relative position of the bottle 131 and the guide column 120.

[0051] The positioning member 144 inserted into the limiting member 143 can limit the relative position of the material bottle 131 and the guide column 120 in one direction, two directions or multiple directions. For example, the positioning member 144 inserted into the limiting member 143 can limit the movement of the material bottle 131 relative to the guide column 120 in the Z-axis direction, and / or the X-axis direction, and / or the Y-axis direction. That is, by inserting the positioning member 144 into the limiting member 143, the assembly of the material bottle 131 and the guide column 120 can be pre-positioned, thereby facilitating the first connecting member 141 to accurately and quickly connect the material bottle 131 with the second connecting member 142, and then accurately and quickly install the material bottle 131 on the guide column 120. The X-axis and the Y-axis are as follows: Figure 3 As indicated by the arrow in .

[0052] It is understandable that when it is necessary to separate the material bottle 131 from the guide column 120, after the first connecting member 141 is removed from the second connecting member 142 and the material bottle 131, the positioning member 144 is separated from the limiting member 143 to achieve the disassembly and separation of the material bottle 131 from the guide column 120, which is simple to operate.

[0053] In the above embodiment, if Figure 6As shown, the limiting member 143 includes a limiting block provided on the guide column 120, and a slot 1431 is provided on the side of the limiting block facing the material bottle 131, and the positioning member 144 includes a positioning block provided on the material bottle 131, and a plug rod 1441 corresponding to the slot 1431 is provided on the positioning block away from the material bottle 131, and then the plug rod 1441 is inserted into the slot 1431, so that the movement of the material bottle 131 and the guide column 120 in the Z-axis direction can be limited, so as to realize the pre-positioning of the material bottle 131 and the guide column 120. It can be understood that by reasonably setting the matching clearance between the slot 1431 and the plug rod 1441 and the opening position of the slot 1431, the movement of the material bottle 131 and the guide column 120 in the X-axis direction and / or the Y-axis direction can also be limited. Therefore, by utilizing the slot 1431 and the insertion rod 1441 structure provided by the limit block and the positioning block, it is possible to achieve pre-positioning of the material bottle 131 and the guide column 120 during the installation process, so as to facilitate the rapid and accurate installation of the material bottle 131 on the guide column 120.

[0054] Furthermore, along the extension direction of the guide column 120, the distance between the second connecting member 142 and the limiting member 143 is equal to the distance between the limiting groove 1312 and the positioning member 144. Since the partial structure of the second connecting member 142 is adapted to the shape of the limiting groove 1312, such as when the second connecting member 142 is a U-shaped block, the two legs of the U-shaped block match the shape of the limiting groove 1312, therefore, along the extension direction of the guide column 120, such as along the Z-axis direction, the distance between the second connecting member 142 and the limiting member 143 is equal to the distance between the limiting groove 1312 and the positioning member 144, so that after the positioning member 144 is inserted into the limiting member 143, the leg of the second connecting member 142 can be exactly located in the limiting groove 1312, thereby achieving double pre-positioning, which is conducive to ensuring the reliability and accuracy of the assembly of the bottle 131 and the second connecting member 142.

[0055] Specifically, when installing the material bottle 131, first move the material bottle 131 to insert the insertion rod 1441 into the slot 1431. At this time, the foot 1421 of the U-shaped block of the second connecting member 142 is inserted into the limiting groove of the material bottle 131 to achieve pre-positioning of the material bottle 131 and the guide column 120. Then, the first connecting member 141 is connected to the first connecting hole 1311 on the material bottle 131 through the first through hole of the second connecting member 142, and the material bottle 131 can be installed on the second connecting member 142. Since the second connecting member 142 is installed on the guide column 120, the material bottle 131 is installed on the guide column 120. When disassembling the material bottle 131, first remove the first connecting member 141 from the second connecting member 142 and the material bottle 131, and then move the material bottle 131 in the direction away from the slot 1431 to disengage the insertion rod 1441 from the slot 1431, so as to realize the disassembly and separation of the material bottle 131 and the second connecting member 142, and then realize the disassembly and separation of the material bottle 131 and the guide column 120. The operation is simple and convenient for disassembly and assembly of the material bottle 131.

[0056] Furthermore, if Figure 6 As shown, the positioning block can be a T-block, the wide part of the T-block can be connected to the bottle 131, and the narrow part of the T-block can be regarded as the insertion rod 1441, wherein the number of the T-blocks can be one, two or more, and the number of the T-blocks can be reasonably set according to the shape of the slot 1431. It can be understood that the positioning block can also be other structures that meet the requirements.

[0057] Specifically, Figure 6 As shown, the third connecting member 145 can be a T-shaped block, the wide portion of the T-shaped block can be connected to the guide column 120, and the narrow portion of the T-shaped block can be connected to the second connecting member 142, such as the narrow portion of the T-shaped block can be connected to the connecting portion 1412 of the U-shaped block by bolts, wherein the number of T-shaped blocks can be one, two or more, and the number of T-shaped blocks can be reasonably set according to the connecting portion 1412 of the U-shaped block. It can be understood that the third connecting member 145 can also be other structures that meet the requirements.

[0058] The third connecting member 145 and the fixing block are both set as T-shaped blocks, that is, the structures of the two are the same, which can improve the commonality rate of the parts of the three-dimensional printing device 100, simplify the processing procedures of the parts of the three-dimensional printing device 100, help save manufacturing costs, and be suitable for popularization and application. It can be understood that the third connecting member 145 and the fixing block can also be other structures that meet the requirements at the same time, or they can be other structures that meet the requirements separately.

[0059] In some possible implementations provided by the present utility model, such as Figure 1 , Figure 2 , Figure 3 ,and Figure 4 As shown, the connecting assembly 140 is located on the side of the guide column 120 away from the resin container 112. Figure 3 As shown, the guide column 120 and the resin container 112 are spaced apart along the Y-axis direction, and the connecting assembly 140 is located on the side of the guide column 120 away from the resin container 112 along the Y-axis direction, that is, along the Y-axis direction, the connecting assembly 140 and the resin container 112 are located on both sides of the guide column 120, so that the material bottle 131 and the resin container 112 can be located on both sides of the guide column 120. Figure 3 and Figure 4 As shown, since the resin container 112 is usually located in front of the 3D printing device 100 relative to the guide column 120 to face the user, by arranging the connecting component 140 on the side of the guide column 120 away from the resin container 112, the material bottle 131 can be located behind the 3D printing device 100, thereby reducing the impact of the material bottle 131 on the appearance of the printing device 100.

[0060] At the same time, if Figure 1, Figure 2 , Figure 3 As shown, normally, the cover body 114 flips forward and backward relative to the base 113 to open or close the printing chamber 111, or the cover body 114 moves up and down relative to the base 113 to open or close the printing chamber 111. By setting the connecting component 140 on the side of the guide column 120 away from the resin container 112, the material bottle 131 and the resin container 112 are located on the opposite sides of the guide column 120 along the Y-axis direction, that is, the material bottle 131 will not be located on the side of the resin container 112, that is, the material bottle 131 will not be located on one side of the resin container along the X-axis direction. Such a setting can ensure that the film separation operation has a larger operating space, that is, in the process of separating the model from the three-dimensional printing device 100, the material bottle 131 will not hinder the operator from performing the film separation operation, which is conducive to improving the film separation efficiency and improving user satisfaction.

[0061] In some possible implementations provided by the present utility model, such as Figure 5 and Figure 6 As shown, the material bottle 131 is provided with a feed port 1313 and a delivery port 1314. The feed port 1313 is used to add resin into the material bottle 131. The delivery port 1314 is connected to one end of the delivery pipe 132 to supply resin to the resin container 112. Thus, the material bottle 131 can be reused. For example, when the material bottle 131 is short of material, the feed port 1313 is used to replenish the resin into the material bottle 131, and then the resin is supplied to the resin container 112 through the delivery port 1314 and the delivery pipe 132 to print the model.

[0062] It is understandable that, in the process of refilling the material bottle 131 using the feed port 1313 , since the material bottle 131 is outside the printing chamber and there is no need to remove the material bottle 131 from the guide column 120 , the refilling operation is further simplified and user operation is convenient.

[0063] In the above embodiment, the feeding device 130 also includes a feed pump and a solenoid valve. The feed pump is connected to the other end of the feed pipe 132, that is, the feed pump is located in the printing chamber 111, and the feed pump is used to extract the resin in the material bottle 131 into the resin container 112; the solenoid valve is connected to the feed pump to control the opening or closing of the feed pump.

[0064] That is to say, the electromagnetic valve controls the on or off state of the feeding pump, thereby controlling the feeding state of the feeding device 130. For example, the electromagnetic valve controls the feeding pump to be turned on, and the resin raw material in the material bottle 131 is drawn into the resin container 112 through the feeding pipe 132 to realize the feeding operation. The electromagnetic valve controls the feeding pump to be turned off to stop the feeding operation. The electromagnetic valve and the feeding pump realize the automatic feeding operation of the feeding device 130, which has a simple structure and low cost, and can meet the design requirements of the feeding device 130 with a compact structure and a small volume.

[0065] like Figures 1 to 6 As shown, an embodiment of the utility model provides a three-dimensional printing device 100, including: a base 110, in which a printing chamber 111 is arranged; a resin container 112, which is connected to the base 110 and is located in the printing chamber 111; a guide column 120 and a molding platform, which are connected to the molding platform and arranged in the printing chamber 111, and the molding platform can move along the guide column 120 toward or away from the resin container 112 to print a model; a feeding device 130, which is used to supply resin to the resin container 112, and the feeding device 130 includes a material bottle 131, which is connected to the guide column 120 and is arranged outside the printing chamber 111.

[0066] Furthermore, the three-dimensional printing device 100 also includes: a connecting component 140, which is arranged on the guide column 120 and the material bottle 131, and is used to connect the guide column 120 and the material bottle 131; the base 110 includes a base 113 and a cover body 114, the cover body 114 is movably connected to the base 113, and can be covered on the base 113 to form a printing chamber 111, the resin container 112 and the guide column 120 are connected to the base 113, and the cover body 114 is provided with an avoidance structure 1141 for avoiding the connecting component 140.

[0067] The feeding device 130 further includes a feeding pipe 132 , and the feeding pipe 132 is connected to the material bottle 131 and the resin container 112 via the avoidance structure 1141 .

[0068] Among them, the connecting component 140 includes a fixing part, which includes a first connecting part 141, and a second connecting part 142 and a third connecting part 145 connected to each other; the third connecting part 145 is connected to the guide column 120; the first connecting part 141 passes through the second connecting part 142 and the bottle 131 to connect the second connecting part 142 to the bottle 131.

[0069] Among them, the second connecting member 142 includes a U-shaped block, the U-shaped block includes two feet 1421 located at both ends, and a connecting part 1422 connecting the two feet 1421, the connecting part 1422 is connected to the third connecting member 145, and the foot 1421 is provided with a first through hole; limiting grooves 1312 are provided on both sides of the bottle 131, the shape of the limiting grooves 1312 matches the shape of the feet 1421, and a first connecting hole 1311 corresponding to the first through hole is provided in the limiting grooves 1312; the first connecting member 141 passes through the first through hole and the first connecting hole 1311 to connect the second connecting member 142 to the bottle 131.

[0070] Among them, the connecting component 140 also includes a limit member 143 and a positioning member 144. The limit member 143 is connected to the guide column 120 and is located below the second connecting member 142. The positioning portion is connected to the bottle 131 and is located below the limit groove 1312. The positioning member 144 is inserted into the limit member 143 to limit the relative position of the bottle 131 and the guide column 120.

[0071] Among them, the limiting member 143 includes a limiting block arranged on the guide column 120, and a slot 1431 is opened on the side of the limiting block facing the bottle 131; the positioning member 144 includes a positioning block arranged on the bottle 131, and an insertion rod 1441 corresponding to the slot 1431 is arranged in the direction away from the bottle 131.

[0072] In which, along the extension direction of the guide column 120, the distance between the second connecting member 142 and the limiting member 143 is equal to the distance between the limiting groove 1312 and the positioning member 144; wherein the positioning member 144 and the third connecting member 145 are both T-blocks.

[0073] The material bottle 131 is provided with a feed port 1313 and a delivery port 1314 ; the feed port 1313 is used to add resin into the material bottle 131 ; the delivery port 1314 is connected to one end of the delivery pipe 132 to supply resin to the resin container 112 .

[0074] The feeding device 130 further includes a feeding pump and a solenoid valve. The feeding pump is connected to the other end of the feeding pipe 132 and is used to extract the resin in the material bottle 131 into the resin container 112. The solenoid valve is connected to the feeding pump and is used to control the opening or closing of the feeding pump.

[0075] In the description of the present invention, the term "plurality" refers to two or more than two. Unless otherwise clearly defined, the terms "upper" and "lower" indicate positions or positional relationships based on the positions or positional relationships described in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. The terms "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0076] In the description of the present invention, the terms "one embodiment", "some embodiments", "specific embodiments", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0077] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A three-dimensional printing device, characterized in that: include: A substrate, wherein a printing chamber is disposed in the substrate; A resin container, the resin container is connected to the base and is located in the printing chamber; A guide post and a molding platform, wherein the guide post and the molding platform are connected and arranged in the printing chamber, and the molding platform can move along the guide post toward or away from the resin container to print the model; A feeding device, used for supplying resin to the resin container, the feeding device comprising a material bottle, the material bottle is detachably connected to the guide post and is arranged outside the printing chamber; A connecting assembly, disposed on the guide post and the material bottle, and used for detachably connecting the guide post and the material bottle; The base includes a base and a cover body, the cover body is movably connected to the base and can be covered on the base to form the printing chamber, the resin container and the guide column are connected to the base, and the cover body is provided with an avoidance structure for avoiding the connecting component.

2. The three-dimensional printing device according to claim 1, characterized in that: The material feeding device further comprises a material delivery pipe, and the material delivery pipe is connected with the material bottle and the resin container via the avoidance structure.

3. The three-dimensional printing device according to claim 2, characterized in that: The connecting assembly includes a fixing member, and the fixing member includes a first connecting member, and a second connecting member and a third connecting member connected to each other; The third connecting member is connected to the guide column; The first connecting member passes through the second connecting member and the material bottle so that the second connecting member is connected to the material bottle.

4. The three-dimensional printing device according to claim 3, characterized in that: The second connecting member comprises a U-shaped block, the U-shaped block comprises two legs at two ends, and a connecting portion connecting the two legs, the connecting portion is connected to the third connecting member, and the legs are provided with a first through hole; The bottle is provided with limiting grooves on both sides, the shape of the limiting grooves matches the shape of the foot, and the limiting grooves are provided with first connecting holes corresponding to the first through holes; The first connecting member passes through the first through hole and the first connecting hole, so that the second connecting member is connected to the material bottle.

5. The three-dimensional printing device according to claim 4, characterized in that: The connecting assembly further comprises a limiting member and a positioning member, wherein the limiting member is connected to the guide column and is located below the second connecting member, and the positioning member is connected to the material bottle and is located below the limiting groove; The positioning member is inserted into the limiting member to limit the relative position of the material bottle and the guide column.

6. The three-dimensional printing device according to claim 5, characterized in that: The limiting member comprises a limiting block arranged on the guide column, and a slot is formed on a side of the limiting block facing the bottle; The positioning member comprises a positioning block arranged on the material bottle, and the positioning block is provided with an insertion rod corresponding to the slot in a direction away from the material bottle.

7. The three-dimensional printing device according to claim 5, characterized in that: Along the extension direction of the guide column, the distance between the second connecting member and the limiting member is equal to the distance between the limiting groove and the positioning member; Wherein, the positioning member and the third connecting member are both T-blocks.

8. The three-dimensional printing device according to claim 2, characterized in that: The material bottle is provided with a feed inlet and a delivery inlet; the feed inlet is used to add resin into the material bottle; the delivery inlet is connected to one end of the delivery pipe and is used to supply resin to the resin container.

9. The three-dimensional printing device according to claim 8, characterized in that: The feeding device also includes a feeding pump and a solenoid valve. The feeding pump is connected to the other end of the feeding pipe and is used to extract the resin in the material bottle into the resin container; the solenoid valve is connected to the feeding pump and is used to control the opening or closing of the feeding pump.

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