Three-dimensional printing apparatus and separation device

Abstract

The utility model discloses three-dimensional printing equipment and a separating device. The three-dimensional printing equipment comprises a mounting base, a driving assembly, a separating device, a forming platform and a limiting device, wherein the forming platform and the limiting device are connected to the mounting base; the separating device is connected to the forming platform; the separating device comprises a base plate and an ejection element, the ejection element is arranged on the base plate, and a through hole is formed in the forming platform; the driving assembly is arranged to drive the forming platform and the separating device to move from a first position to a second position in the first direction and drive the forming platform to move from the second position to a third position in the first direction, and at the second position, a base plate of the separating device makes contact with the limiting device; when the forming platform moves from the second position to the third position, the forming platform moves relative to the substrate, so that the ejection element gradually extends out of the hole of the forming platform. According to the utility model, the technical problem that the printed piece is adhered to the forming platform and is not easy to take down is solved.

Description

Technical Field

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

[0002] When a 3D printing device is used for 3D printing, the printed part will solidify on the forming platform. In order to obtain the printed part later, the printed part can be separated from the forming platform by manual shoveling to obtain a complete printed part, but this separation method is not efficient and may damage the printed part during the separation process, causing defects in the printed part.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Utility Model Content

[0004] The main purpose of the embodiments of the utility model is to provide a three-dimensional printing device and a separation device, so as to at least solve the technical problem that the printed parts are adhered to the forming platform and are difficult to be removed.

[0005] To achieve the above-mentioned purpose, the utility model provides a three-dimensional printing device, comprising: a mounting seat, a molding platform, a limiting device, a driving assembly and a separating device, wherein the molding platform and the limiting device are connected to the mounting seat, and the separating device is connected to the molding platform; wherein the separating device comprises a substrate and an ejection element, wherein the ejection element is arranged on the substrate, and a through hole is arranged on the molding platform, and the ejection element corresponds to the hole; the driving assembly is arranged to drive the molding platform and the separating device to move from a first position to a second position along a first direction, and to drive the molding platform to move from the second position to a third position along the first direction, wherein at the second position, the substrate of the separating device contacts the limiting device, and during the period when the molding platform moves from the second position to the third position, the molding platform moves relative to the substrate, so that the ejection element gradually extends out of the hole of the molding platform.

[0006] The base plate and the ejection element may be formed integrally or may be detachable independent elements.

[0007] In some embodiments, the separation device is rotationally connected to the forming platform; during the movement of the forming platform from the second position to the third position, the separation device rotates from the first state to the second state relative to the forming platform, so that the ejection element extends out of the hole as it rotates.

[0008] In some embodiments, the ejection element has a first extension length along the first direction and a second extension length along the second direction, wherein the second direction is perpendicular to the first direction, the second extension length is greater than the first extension length, and the shape of the hole of the forming platform is configured to allow the ejection element to rotate within a rotation plane to extend out of the hole, and the rotation plane is a plane formed by the first direction and the second direction.

[0009] In some embodiments, the second extension lengths of the ejection elements are different. For example, the ejection elements that are gradually lengthened or shortened are conducive to realizing the side peeling of the printed part, that is, the printed part is separated from the building platform from one side.

[0010] In some embodiments, the ejection element has an inclination angle relative to the base plate in the rotation plane, and the inclination angle is not greater than 30°.

[0011] In some embodiments, the shape of the hole of the forming platform is configured as a fence hole shape, and the long side direction of the fence hole shape is along the second direction.

[0012] In some embodiments, the separation device is connected to the forming platform via a torsion spring and a rotating shaft.

[0013] In some embodiments, the ejection element is an ejector pin, and during the movement of the molding platform from the second position to the third position, the ejector pin extends out of the hole along the first direction. The shape of the hole allows the ejector pin to extend. In some embodiments, the shape of the hole is proportionally matched to the orthographic projection of the ejector pin on the molding platform. In some embodiments, the shape of the hole may be different from the shape of the ejector pin, such as a round hole and a square ejector pin.

[0014] In some embodiments, the ejection elements have different first extension lengths along the first direction.

[0015] In some embodiments, the length of the ejection element gradually decreases along a third direction perpendicular to the first direction, wherein the third direction is located in a plane where the substrate is located.

[0016] In some embodiments, the molding platform is mounted to the mounting seat via a support seat, and an elastic element is disposed on the support seat, and the elastic element is elastically compressed during the movement of the molding platform from the second position to the third position.

[0017] In some embodiments, the elastic element is a spring, a guide column is further provided on the support seat, and the spring is arranged around the guide column.

[0018] In some embodiments, the three-dimensional printing device further includes a material receiving assembly having a working position and a waiting position spaced apart from the working position, wherein the position of the material receiving assembly at the working position corresponds to the molding platform.

[0019] In some embodiments, the material receiving component also has a unloading position spaced apart from the working position, and the three-dimensional printing device also includes: a draining component, wherein the draining component is positioned to correspond to the unloading position of the material receiving component; or a material receiving component, wherein the material receiving component is positioned to correspond to the unloading position of the material receiving component; or a draining component and a material receiving component, wherein the draining component is positioned to correspond to the unloading position of the material receiving component, and the material receiving component is configured to receive the print from the draining component.

[0020] According to another aspect of an embodiment of the present utility model, a separation device is further provided, comprising: a substrate and an ejection element, wherein the separation device is applied to any one of the above-mentioned three-dimensional printing devices.

[0021] In an embodiment of the utility model, a three-dimensional printing device including a mounting seat, a molding platform, a limiting device, a driving assembly and a separating device is adopted. By arranging an ejection element on the substrate and a through hole on the molding platform, the driving assembly and the limiting device cooperate to make the ejection element pass through the hole to eject the printed part from the molding platform, thereby achieving the purpose of automatically separating the printed part from the molding platform, thereby realizing the technical effect of improving the convenience of separation of the printed part and the molding platform in the three-dimensional printing technology, and further solving the technical problem that the printed part is adhered to the molding platform and is difficult to remove. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0023] Figure 1 is a schematic diagram of a three-dimensional printing device provided according to an embodiment of the utility model;

[0024] Figure 2 is a front schematic diagram of a three-dimensional printing device provided according to an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the main part of a three-dimensional printing device provided according to an optional embodiment of the utility model;

[0026] Figure 4 It is a partial schematic diagram of the device before the printed part is ejected according to an optional embodiment of the utility model;

[0027] Figure 5It is a partial schematic diagram of the device after the printed part is ejected according to an optional embodiment of the utility model;

[0028] Figure 6 is a schematic diagram of a device when the separation device according to an optional embodiment of the utility model does not contact the limiting device;

[0029] Figure 7 is a schematic diagram of a device when the separation device according to an optional embodiment of the utility model is in a second position;

[0030] Figure 8 is a schematic diagram of a device when a printed piece is ejected according to an optional embodiment of the utility model;

[0031] Fig. 9 is a schematic diagram of a rotating substrate according to an optional embodiment of the utility model;

[0032] Fig.10 is a schematic diagram of a fence forming platform according to an optional embodiment of the utility model;

[0033] Fig.11 This is a cross-sectional view of the device before the top column passes through the forming platform according to an optional embodiment of the utility model;

[0034] Fig.12 is a cross-sectional view of the device after the top column passes through the forming platform according to an optional embodiment of the utility model;

[0035] Fig.13 It is a partial schematic diagram of the equipment before the top column passes through the forming platform according to an optional embodiment of the utility model;

[0036] Fig.14 It is a partial schematic diagram of the equipment when the top column reaches the forming platform according to an optional embodiment of the utility model;

[0037] Fig.15 It is a partial schematic diagram of the device after the top column passes through the hole of the forming platform according to an optional embodiment of the utility model;

[0038] Fig.16 It is a schematic diagram of different top column design solutions according to optional embodiments of the utility model;

[0039] Fig.17 It is a schematic diagram of a forming platform with holes according to an optional embodiment of the utility model.

[0040] The above drawings include the following reference numerals:

[0041] 1. Mounting seat; 2. Forming platform; 21. Fence hole; 22. Circular hole; 3. Limiting device; 4. Driving assembly; 5. Separation device; 51. Base plate; 52. Ejection element; 53. Support seat avoidance hole; 6. Material tray; 7. Material holding platform base plate; 9. Torsion spring; 10. Rotating shaft; 11. Support seat; 12. Printing part; 13. Elastic element; 14. Guide column. DETAILED DESCRIPTION

[0042] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0045] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0046] In order to solve the problem in the prior art that printed parts are adhered to a molding platform and are difficult to remove, the utility model provides a three-dimensional printing device.

[0047] Figure 1 is a schematic diagram of a three-dimensional printing device provided according to an embodiment of the utility model, Figure 2 is a front schematic diagram of a three-dimensional printing device provided according to an embodiment of the utility model, Figure 3 is a schematic diagram of the main part of a three-dimensional printing device provided according to an optional embodiment of the utility model. It can be understood that in order to more clearly demonstrate the concept of the utility model, Figure 1 and Figure 2 Not all components of the 3D printing device are shown. Figure 1 , Figure 2 and Figure 3As shown, the three-dimensional printing device includes: a mounting base 1, a molding platform 2, a limiting device 3, a driving component 4 and a separating device 5, wherein the molding platform 2 and the limiting device 3 are respectively connected to the mounting base 1, and the separating device 5 is connected to the molding platform; wherein the separating device 5 includes a substrate and an ejection element, the ejection element is arranged on the substrate, a through hole is arranged on the molding platform, and the ejection element corresponds to the hole; the driving component 4 is arranged to drive the molding platform 2 and the separating device 5 to move from a first position to a second position along a first direction, and to drive the molding platform to move from a second position to a third position along a first direction, wherein, at the second position, the substrate of the separating device contacts the limiting device, and during the period when the molding platform moves from the second position to the third position, the molding platform moves relative to the substrate, so that the ejection element gradually extends out of the hole of the molding platform.

[0048] The three-dimensional printing device may further include a material tray 6 for carrying printing materials and a material holding platform substrate 7 for supporting the material tray 6 .

[0049] In the three-dimensional printing device provided in this embodiment, the separation device and the limiting device can help separate the printed part from the molding platform of the three-dimensional printing device. The molding platform is used to adhere the solidified layer formed after the exposure of the printing material layer by layer from the material holding mechanism (such as a material tray) of the three-dimensional printing device and separate the solidified layer from the material holding mechanism to obtain a complete printed part, and the printed part will be fixed on the lower surface of the molding platform. The prior art requires the use of manual shovels to shovel the printed part off the molding platform. This process is inefficient and easy to damage the printed part. Since the printed part is firmly adhered to the lower surface of the molding platform, after the three-dimensional printing device completes printing, the printed part separation device provided in this embodiment can be used to quickly separate the printed part from the molding platform.

[0050] In this embodiment, the ejection element can be aligned with the through hole on the molding platform. When the driving assembly drives the molding platform to move relative to the substrate, the ejection element can gradually pass through the hole and contact the printed part fixed on the lower surface of the molding platform. The ejection element continues to apply force to the printed part under the drive of the driving assembly to peel the printed part from the molding platform. It can be understood that if the substrate and the molding platform maintain the same motion state (for example, the motion state of the two is the same when moving from the first position to the second position along the first direction), then the relative position relationship between the two in space remains unchanged, and the ejection element will not extend out of the hole and contact the printed part. When the separation device contacts the limiting device, the limiting device realizes the relative displacement of the substrate and the molding platform by limiting the original motion trend of the substrate under the drive of the driving assembly, thereby realizing the operation of controlling the ejection element to pass through the through hole of the molding platform to eject the printed part. That is, when the driving assembly drives the molding platform to move from the second position to the third position along the first direction (especially vertically upward), the limiting device contacts the substrate of the separation device, so that the substrate cannot maintain the same motion state as the molding platform during this period (that is, the substrate position remains unchanged and the molding platform continues to move), thereby causing relative displacement between the separation device and the molding platform. Optionally, the driving assembly may include a driving motor and a spindle.

[0051] As an optional embodiment, the molding platform 2 is mounted to the mounting seat through the support seat 11, and the support seat 11 is provided with an elastic element 13. During the movement of the molding platform 2 from the second position to the third position, the elastic element 13 is elastically compressed. Optionally, the elastic element 13 is a spring, and a guide column 14 is further provided on the support seat, and the spring is arranged around the guide column. After being compressed, the elastic element can accumulate elastic potential energy. After the printed part is peeled off from the molding platform, the release element can release the elastic potential energy, drive the guide column (or guide shaft) and the substrate of the separation device to reset, so that the three-dimensional printing device returns to the waiting printing state or the normal printing state.

[0052] In some embodiments, the 3D printing device further includes a material receiving assembly having a working position and a waiting position spaced apart from the working position, wherein the position of the material receiving assembly at the working position corresponds to the molding platform.

[0053] In some embodiments, the material receiving component also has a unloading position spaced apart from the working position, and the three-dimensional printing device also includes: a draining component, wherein the draining component is positioned to correspond to the unloading position of the material receiving component; or a material receiving component, wherein the material receiving component is positioned to correspond to the unloading position of the material receiving component; or a draining component and a material receiving component, wherein the draining component is positioned to correspond to the unloading position of the material receiving component, and the material receiving component is configured to receive the print from the draining component.

[0054] As an optional embodiment, the separation device and the molding platform can be rotatably connected; when the molding platform moves from the second position to the third position, the separation device rotates from the first state to the second state relative to the molding platform, so that the ejection element extends out of the hole as it rotates.

[0055] This optional embodiment provides a solution for rotating and ejecting the printed part by rotating the ejection element. When the separation device is in a first state and a second state relative to the forming platform, the angle between the separation device and the forming platform is different, especially the angle between the substrate and the surface of the forming platform.

[0056] As an optional embodiment, the ejection element has a first extension length along the first direction and a second extension length along the second direction, wherein the second direction is perpendicular to the first direction, the second extension length is greater than the first extension length, and the shape of the hole of the forming platform is configured to allow the ejection element to rotate out of the hole within a rotation plane, and the rotation plane is a plane formed by the first direction and the second direction.

[0057] Wherein, when the molding platform and the substrate are placed horizontally, the first direction can be a vertically upward direction, and the molding platform and the substrate move vertically upward to the second position under the drive of the driving assembly. The first extension length of the ejection element is the height of the ejection element above the plane of the substrate, and the second extension length is the length of each ejection element extending on the substrate. In this optional embodiment, since the second extension length is greater than the first extension length, the ejection element forms a sheet structure on the substrate, and at this time, the shape of the hole on the molding platform matches the shape of the ejection element as a long strip, so that the ejection element can rotate around the rotation center of the separation device and rotate in the hole to pass through the hole, thereby applying pressure to the printed part on the other side of the hole.

[0058] As an optional embodiment, the separation device is connected to the forming platform via a torsion spring and a rotating shaft, wherein the rotating shaft is the rotation center of the separation device.

[0059] Figure 4 is a partial schematic diagram of the device before the printed part is ejected according to an optional embodiment of the utility model, such as Figure 4 As shown, the base plate can form an inclined angle with the molding platform under the cooperation of the limiting device, the torsion spring 9 and the rotating shaft 10, so that the ejection element at least partially extends into the through hole of the molding platform. Figure 5 is a partial schematic diagram of the device after the printed part is ejected according to an optional embodiment of the utility model, such as Figure 5 As shown, with the relative rotation between the substrate and the forming platform, the ejection element ejects the printed part from the forming platform, and the printed part can subsequently fall into the material receiving assembly.

[0060] As an optional embodiment, the ejection element has an inclination angle relative to the base plate in the rotation plane, and the inclination angle is not greater than 30°, for example, 3 to 20°, preferably 5 to 10°.

[0061] As an optional embodiment, the second extension lengths between the ejection elements are different.

[0062] Figure 6 is a schematic diagram of a device when the separation device according to an optional embodiment of the utility model does not contact the limiting device, Figure 7 is a schematic diagram of the device when the separation device according to an optional embodiment of the utility model is in the second position, Figure 8 Schematic diagram of the device when the printed part is ejected according to an optional embodiment of the utility model. Figures 6 to 13 As shown, based on the above optional embodiment, the printed part separation can be achieved through the following process:

[0063] (1) The driving assembly first drives the molding platform (kept horizontal) and the base plate (rotatably connected to the molding platform and inclined to be set at an angle to the molding platform under the action of the elastic element) to move upward together;

[0064] (2) After traveling a certain distance, the substrate is restricted by the limiting device and rotates, while the molding platform is not restricted by the limiting device and continues to move (i.e., the molding platform continues to move upward relative to the substrate, while the substrate rotates relative to the molding platform);

[0065] (3) As the build platform continues to move upward relative to the base plate, the ejection portion of the base plate passes through the hole of the build platform to eject the printed part;

[0066] (4) After ejection is completed, the driving assembly drives the molding platform to move downward. In the first downward stroke, the elastic element increases the distance between the molding platform and the substrate (or increases the angle). In the second downward stroke, the molding platform and the substrate are driven downward by the driving assembly.

[0067] As an optional embodiment, the shape of the hole of the forming platform is configured as a fence hole shape, and the long side direction of the fence hole shape is along the second direction. Fig. 9 is a schematic diagram of a rotating substrate according to an optional embodiment of the utility model, such as Fig. 9 As shown, the ejection element of the base plate is in the shape of a blade and can pass through the fence-shaped through hole in the molding platform. The support seat avoidance hole 53 of the base plate 51 is used for the support seat 11 to pass through, so that the support seat 11 can pass through the support seat avoidance hole 53 to be fixed to the molding platform 2. Fig.10 Schematic diagram of a fence forming platform according to an optional embodiment of the utility model, such as Fig.10As shown, the arrangement direction of the fence holes of the fence forming platform is the second direction, which is the same as the extension direction of the blade-shaped ejection element in the base plate, so that the ejection element can pass through the fence holes in a rotational manner.

[0068] As an optional embodiment, the ejection element is an ejector pin, and during the movement of the molding platform from the second position to the third position, the ejector pin extends out of the hole along the first direction, and the shape of the hole is proportionally matched to the orthographic projection of the ejector pin on the molding platform. For example, the diameter of the hole is 100% to 150% of the diameter of the ejector pin, preferably 110% to 130%.

[0069] Optionally, in the case where the top column is a circular top column, the hole in this optional embodiment may be a circular hole.

[0070] Fig.11 This is a cross-sectional view of the device before the top column passes through the forming platform according to an optional embodiment of the utility model. Fig.12 This is a cross-sectional view of the equipment after the top column passes through the forming platform according to an optional embodiment of the utility model. Fig.13 This is a partial schematic diagram of the equipment before the top column passes through the forming platform according to an optional embodiment of the utility model. Fig.14 This is a partial schematic diagram of the device when the top column reaches the forming platform according to an optional embodiment of the utility model. Fig.15 It is a partial schematic diagram of the equipment after the top column passes through the hole of the forming platform according to an optional embodiment of the utility model.

[0071] Fig.13 The device state in can also be called the unloaded state. At this time, the separation device and the limit device are separated, the spring drives the guide shaft and the limit device, and the device is in a state where it can print normally and wait for printing.

[0072] Fig.14 The equipment state in can also be called the top piece starting state. At this time, the bottom surface of the forming platform with holes is attached to the printed part. Under the control of the driving component, the driving component drives the support seat and the forming platform to rise until they contact the separation device.

[0073] Fig.15 The equipment state in can also be called the ejection completion state. During this process, the driving motor in the driving assembly drives the spindle to continue to rise. The substrate stops rising due to touching the limit device. The spindle continues to drive the support seat and the forming platform to rise. The spring is slowly compressed until the printed part on the bottom of the forming platform hits the cylinder on the ejection plate, realizing the ejection function, completing the ejection action, and peeling the printed part from the forming platform.

[0074] As shown in the figure above, as the forming platform moves upward, the ejector pin can pass through the through hole to directly push out the printed part, thereby separating the printed part from the forming platform. In this scheme, the relative displacement direction between the substrate and the forming platform is in the vertical direction, and the ejector pin shuttles through the hole in the vertical direction, passes through the hole vertically to eject the printed part, and then retracts vertically. Optionally, the orthographic projection of the ejector pin on the forming platform can characterize the shape and size of the hole required for the ejector pin to completely pass through the hole. The actual shape of the hole matches the orthographic projection, for example, it can be slightly larger than the orthographic projection so that the ejector pin can completely pass through the hole, or it can be slightly smaller than the orthographic projection so that the head of the ejector pin can pass through the hole without the bottom passing through the hole, as long as the portion of the ejector pin that passes through the hole is sufficient to eject and separate the printed part from the forming platform.

[0075] Optionally, the substrate may include a plurality of top pillars, the molding platform may include a plurality of holes, and the number of holes may be the same as or greater than the number of top pillars, but it is necessary to ensure that each top pillar is aligned with one of the holes on the molding platform.

[0076] As an optional embodiment, the first extension lengths of the ejection elements along the first direction are different.

[0077] By setting the lengths of different ejector pins in a diversified manner, a variety of technical effects can be achieved. For example, multiple prints can be peeled off along a specific direction of the forming platform, and a single print can be peeled off from the platform along a specific direction. In this case, the ejector pins can be arranged from the first end to the second end of the substrate, and the length of the ejector pins gradually becomes shorter as the arrangement progresses. At this time, the longer ejector pin can first pass through the hole and press against the print, and eject the print. The shorter ejector pin will pass through the hole and press against the print at a later time point, so the print will first separate from the forming platform from the first end mentioned above, achieving the technical effect of separating the print along a specific direction.

[0078] As an optional embodiment, along a third direction perpendicular to the first direction, the length of the ejection element gradually decreases, wherein the third direction is located in the plane where the substrate is located.

[0079] Fig.16 is a schematic diagram of different top column design solutions according to optional embodiments of the utility model, Fig.17 Schematic diagram of a forming platform with holes according to an optional embodiment of the utility model. Fig.16As shown, the main feature of the substrate of the separation device may be that the ejector column becomes shorter or longer from one end to the other, or it may become shorter from both sides to the middle of the substrate. Its design purpose is to ensure that all prints are pushed from the side during the ejection process to form side peeling, which can greatly reduce the ejection force. In order to achieve the above-mentioned side peeling, a step plate and equal-length screws can be used to form a height difference, or a flat plate and unequal-length screws can be used to form a height difference. Alternatively, a step plate and equal-length pins can be used to form a height difference, or a flat plate and unequal-length pins can be used to form a height difference. In the above scheme, the ejection element can be a screw or a pin.

[0080] Based on the above optional embodiment, the printed part separation can be achieved through the following specific process:

[0081] (1) The driving assembly first drives the molding platform and the substrate to move upward together;

[0082] (2) After the substrate moves upward for a certain distance, it is restricted by the limiting device and cannot move further, while the molding platform is not restricted by the limiting device and continues to move (i.e., the molding platform continues to move upward relative to the substrate);

[0083] (3) As the build platform continues to move upward relative to the base plate, the ejector pin of the base plate passes through the hole of the build platform to eject the printed part;

[0084] (4) After the printed part is ejected, the driving assembly drives the forming platform to move downward. In the first downward stroke, the elastic element increases the distance between the forming platform and the substrate. In the second downward stroke, the forming platform and the substrate are driven downward by the driving assembly.

[0085] The serial numbers of the above-mentioned embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0086] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0087] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0088] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0089] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0090] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A three-dimensional printing device, characterized in that: include: A mounting seat, a molding platform, a limiting device, a driving assembly and a separating device, wherein the molding platform and the limiting device are connected to the mounting seat, and the separating device is connected to the molding platform; wherein, The separation device comprises a base plate and an ejection element, wherein the ejection element is arranged on the base plate, and a through hole is arranged on the molding platform, and the ejection element corresponds to the hole; The driving assembly is configured to drive the molding platform and the separation device to move from a first position to a second position along a first direction, and to drive the molding platform to move from the second position to a third position along the first direction, wherein at the second position, a base plate of the separation device contacts the limiting device, and during the movement of the molding platform from the second position to the third position, the molding platform moves relative to the base plate, so that the ejection element gradually extends out of the hole of the molding platform.

2. The three-dimensional printing device according to claim 1, characterized in that: The separation device is rotationally connected to the molding platform; during the movement of the molding platform from the second position to the third position, the separation device rotates from the first state to the second state relative to the molding platform, so that the ejection element extends out of the hole as it rotates.

3. The three-dimensional printing device according to claim 2, characterized in that: The ejection element has a first extension length along the first direction and a second extension length along the second direction, wherein the second direction is perpendicular to the first direction, the second extension length is greater than the first extension length, and the shape of the hole of the forming platform is configured to allow the ejection element to rotate within a rotation plane to extend out of the hole, and the rotation plane is a plane formed by the first direction and the second direction.

4. The three-dimensional printing device according to claim 3, characterized in that: The second extension lengths of the ejection elements are different from each other.

5. The three-dimensional printing device according to claim 3, characterized in that: The ejection element has an inclination angle relative to the base plate in the rotation plane, and the inclination angle is not greater than 30°.

6. The three-dimensional printing device according to claim 3, characterized in that: The shape of the hole of the forming platform is configured as a fence hole shape, and the long side direction of the fence hole shape is along the second direction.

7. The three-dimensional printing device according to claim 2, characterized in that: The separation device is connected to the forming platform via a torsion spring and a rotating shaft.

8. The three-dimensional printing device according to claim 1, characterized in that: The ejection element is an ejector column, and during the movement of the molding platform from the second position to the third position, the ejector column extends out of the hole along the first direction.

9. The three-dimensional printing device according to claim 8, characterized in that: The ejection elements have different first extension lengths along the first direction.

10. The three-dimensional printing device according to claim 9, characterized in that: Along a third direction perpendicular to the first direction, the length of the ejection element gradually decreases.

11. The three-dimensional printing device according to any one of claims 1 to 10, characterized in that: The molding platform is mounted to the mounting seat via a supporting seat, and an elastic element is arranged on the supporting seat. During the movement of the molding platform from the second position to the third position, the elastic element is elastically compressed.

12. The three-dimensional printing device according to claim 11, characterized in that: The elastic element is a spring, and a guide column is also arranged on the support seat, and the spring is arranged around the guide column.

13. The three-dimensional printing device according to any one of claims 1 to 10, characterized in that: The three-dimensional printing device also includes a material receiving assembly, which has a working position and a waiting position spaced apart from the working position, wherein the position of the material receiving assembly at the working position corresponds to the molding platform.

14. The three-dimensional printing device according to claim 13, characterized in that: The receiving assembly also has a discharge position spaced apart from the working position, and the three-dimensional printing device further includes: A drain assembly, wherein the drain assembly is positioned to correspond to a discharge position of the receiving assembly; or A receiving assembly, wherein the receiving assembly is positioned to correspond to the unloading position of the receiving assembly; or A drain component and a receiving component, wherein the drain component is positioned to correspond to the unloading position of the receiving component, and the receiving component is configured to receive the printed part from the drain component.

15. A separation device, characterized in that: include: A substrate and an ejection element, wherein the separation device is applied to the three-dimensional printing device according to any one of claims 1 to 14.

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