Three-dimensional printer

Abstract

The utility model discloses a three-dimensional printer, relates to the technical field of three-dimensional printing, and mainly aims to simplify the operation process of printing a model and improve the printing efficiency of the model. According to the main technical scheme, the three-dimensional printer comprises a shell, a printing platform, a photocuring mechanism and a reprocessing mechanism, the reprocessing mechanism is arranged in the shell; the printing platform is movably arranged on the shell; the photocuring mechanism is movably arranged in the shell, the photocuring mechanism is used for moving between a first position and a second position relative to the shell, the photocuring mechanism is located on a moving path of the printing platform at the first position, the printing platform is used for moving to the photocuring mechanism, and the photocuring mechanism leaves the moving path of the printing platform at the second position; the printing platform is used for moving to the reprocessing mechanism; the light curing mechanism comprises a material groove and a light source assembly, curing light emitted by the light source assembly penetrates through the material groove to be projected into the material groove, and the printing platform is used for moving into the material groove to print a model.

Description

Technical Field

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

[0002] After a model is printed using a stereolithography 3D printer, some liquid photosensitive resin often remains on the surface. To ensure print quality, users must manually place the model in a post-processing device to clean the remaining liquid photosensitive resin and re-curing the model. This complicated the process and reduced printing efficiency. Utility Model Content

[0003] In view of this, an embodiment of the present invention provides a three-dimensional printer, the main purpose of which is to simplify the operation process of printing models and improve the printing efficiency of models.

[0004] In order to achieve the above-mentioned purpose, the present invention mainly provides the following technical solutions:

[0005] The present invention provides a three-dimensional printer, comprising:

[0006] Housing, printing platform, light curing mechanism and reprocessing mechanism;

[0007] The reprocessing mechanism is disposed within the housing;

[0008] The printing platform is movably disposed in the housing;

[0009] The light-curing mechanism is movably disposed on the housing, and is configured to move relative to the housing between a first position and a second position. In the first position, the light-curing mechanism is located in a moving path of the printing platform, and the printing platform is configured to move to the light-curing mechanism to print the model. In the second position, the light-curing mechanism leaves the moving path of the printing platform, and the printing platform is configured to move to the reprocessing mechanism so that the reprocessing mechanism reprocesses the model.

[0010] The light curing mechanism includes a material tank and a light source assembly. The curing light emitted by the light source assembly passes through the material tank to be projected into the material tank. The printing platform is used to move into the material tank to print the model.

[0011] Furthermore, the three-dimensional printer further comprises:

[0012] A driving assembly is connected to the light-curing mechanism and is used to drive the light-curing mechanism to move between the first position and the second position.

[0013] Furthermore, the driving assembly includes a driving member, a rack and a gear, the rack is arranged on one of the light-curing mechanism and the housing, the rack extends along the moving direction of the light-curing mechanism, and the gear is rotatably arranged on the other of the light-curing mechanism and the housing, the driving member is connected to the gear to drive the gear to rotate, and the gear is meshed with the rack to drive the light-curing mechanism to move between the first position and the second position.

[0014] Furthermore, with the direction of movement from the first position to the second position as a forward direction, the light curing mechanism includes a first end located in the forward direction and a second end opposite to the first end; the rack includes a third end located in the forward direction and a fourth end opposite to the third end; the housing includes a first side located in the forward direction and a second side opposite to the first side;

[0015] If the gear is rotatably mounted on the light curing mechanism, the rack is mounted on the housing, and the gear is rotatably mounted on the second end; the third end extends to the first side, and the fourth end extends to the second side;

[0016] If the gear is rotatably disposed on the housing, the rack is disposed on the light curing mechanism, and the gear is rotatably disposed on the first side, the third end extends to the first end, and the fourth end extends to the second end.

[0017] Furthermore, the rack is a flexible rack, and the rack can be bent in its length direction;

[0018] The driving assembly further includes a first roller, the first roller being rotatably disposed on one of the light-curing mechanism and the housing, the first roller and the gear being spaced apart along the moving direction of the light-curing mechanism, and the rotation direction of the first roller being consistent with the rotation direction of the gear;

[0019] The rack is wound around the gear and the first roller so that the rack is wrapped around the outside of the gear;

[0020] The first roller is an idler wheel, and the idler wheel is meshed and connected with the rack.

[0021] Furthermore, the portion of the rack wound around the gear and the first roller, and the portion located between the gear and the first roller, extend in an S shape.

[0022] Furthermore, the number of the driving assemblies is at least two, at least one of the driving assemblies is located on one side of the light-curing mechanism, and at least another of the driving assemblies is symmetrically located on the other side of the light-curing mechanism.

[0023] Furthermore, the three-dimensional printer further comprises:

[0024] a limiting member, the limiting member being provided on one of the light curing mechanism and the housing;

[0025] a position-limiting fitting, the position-limiting fitting being provided on the other of the light-curing mechanism and the housing;

[0026] When the light-curing mechanism is in the first position, the limiting component cooperates with the limiting matching component to limit the movement of the light-curing mechanism relative to the housing.

[0027] Furthermore, the limiting member includes a protrusion;

[0028] The limiting fitting includes a second roller, the second roller being rotatably connected to the other of the light-curing mechanism and the housing, the rolling direction of the second roller being consistent with the moving direction of the light-curing mechanism, and the second roller and the protrusion being arranged relative to each other in the moving direction of the printing platform;

[0029] When the light curing mechanism switches between the first position and the second position, the second roller is in rolling connection with the light curing mechanism or the housing.

[0030] When the light curing mechanism is in the first position, the second roller abuts against the protrusion.

[0031] Furthermore, a groove is provided on the surface of the protrusion opposite to the second roller, and the groove matches the outer contour shape of the second roller;

[0032] When the light curing mechanism is in the first position, a portion of the second roller is confined in the groove.

[0033] Furthermore, the protrusion includes a side surface connected to the surface of the light curing mechanism or the surface of the housing, and the side surface is an inclined surface, and the inclined surface is used to be rollingly connected to the second roller to guide a part of the second roller to enter or leave the groove;

[0034] The number of the protrusions and the number of the second rollers are at least four respectively;

[0035] When the light-curing mechanism is in the first position, at least four of the protrusions correspond to at least four of the second rollers and are located at four corners of the light-curing mechanism.

[0036] Furthermore, the three-dimensional printer further comprises:

[0037] A cover body, wherein the cover body is a flexible cover body, one end of the cover body is connected to the housing, and the other end of the cover body is connected to the light curing mechanism;

[0038] When the light curing mechanism is in the first position, the cover is in a compressed state; when the light curing mechanism is in the second position, the cover is in a stretched state, and the cover is arranged outside the light curing mechanism;

[0039] The cover body is an organ protective cover.

[0040] Furthermore, the printing platform is movably disposed in the housing along a vertical direction; and the light curing mechanism is movably disposed in the housing along a horizontal direction.

[0041] Furthermore, the light curing mechanism further comprises a bracket, the material trough and the light source assembly are both arranged on the bracket, and the bracket is movably arranged on the housing;

[0042] When the light curing mechanism is in the first position, the printing surface of the printing platform corresponds to the opening of the material trough.

[0043] Furthermore, the housing is provided with a first slide rail, and the first slide rail extends along the moving direction of the light curing mechanism;

[0044] The bracket is provided with a second slide rail, the second slide rail extends along the moving direction of the light curing mechanism, and the first slide rail and the second slide rail are slidably connected.

[0045] Furthermore, it also includes a detection component, which is arranged on the housing and / or the light-curing mechanism and is electrically connected to the drive assembly. The detection component is used to send an electrical signal when the light-curing mechanism reaches the first position or the second position to stop the drive assembly.

[0046] By means of the above technical solution, the present invention has at least the following beneficial effects:

[0047] In the 3D printer provided by the present invention, when the light-curing mechanism is in a first position, the light-curing mechanism can be located in the movement path of the printing platform, and the printing platform can be moved into the material trough of the light-curing mechanism to print the model. When the light-curing mechanism is in a second position, the light-curing mechanism can be removed from the movement path of the printing platform. In this case, the light-curing mechanism does not hinder the movement of the printing platform along its movement path, thereby allowing the printing platform to be moved to the reprocessing mechanism for reprocessing the model. Thus, when it is necessary to print the model, the light-curing mechanism can be controlled to move to the first position, and the printing platform can be moved into the material trough of the light-curing mechanism to print the model. When the model is printed and needs to be reprocessed, the light-curing mechanism can be controlled to move to the second position, and the printing platform can be moved to the reprocessing mechanism for reprocessing the model. In other words, the 3D printer provided by the present invention can both print the model and reprocess the model. The printing and reprocessing processes are completed in the same device, without the need for additional equipment. This makes operation simple and convenient, and improves printing efficiency. The light curing mechanism includes a material trough and a light source assembly. The material trough and the light source assembly can move to make way for the printing platform. The movable components are not too many and are in appropriate positions. The structure is easy to move and the overall structure of the 3D printer is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 A schematic structural diagram of a three-dimensional printer provided in an embodiment of the present utility model;

[0049] Figure 2 A schematic cross-sectional view of a light curing mechanism in a first position in a 3D printer provided by an embodiment of the present utility model;

[0050] Figure 3 A partial schematic diagram of a light curing mechanism in a 3D printer provided by an embodiment of the present utility model in a first position;

[0051] Figure 4 A schematic cross-sectional view of a light curing mechanism in a 3D printer provided by an embodiment of the present utility model in a second position;

[0052] Figure 5 A partial schematic diagram of a light curing mechanism in a 3D printer provided by an embodiment of the present utility model in a second position;

[0053] Figure 6 A partial schematic diagram of a three-dimensional printer provided by an embodiment of the present utility model;

[0054] Figure 7 for Figure 6 A magnified schematic diagram of point A in the middle;

[0055] Figure 8A schematic structural diagram of a light curing mechanism in a 3D printer provided by an embodiment of the present utility model;

[0056] Figure 9 for Figure 8 A magnified schematic diagram of point B in the middle;

[0057] Figure 10 A schematic diagram of the structure of a light curing mechanism installed on a housing in a 3D printer provided by an embodiment of the present utility model;

[0058] Figure 11 for Figure 9 Enlarged schematic diagram of point C in the middle.

[0059] Description of reference numerals:

[0060] 1-housing; 2-printing platform; 3-light curing mechanism; 31-bracket; 32-material trough; 4-driving assembly; 41-rack; 42-gear; 43-first roller; 5-protrusion; 51-groove; 52-side; 6-second roller; 7-cover; 8-second slide rail. DETAILED DESCRIPTION

[0061] In order to make the purpose, technical solution and advantages of the present invention more clear, the technical solution in the embodiment of the present invention will be described in more detail below with reference to the drawings in the preferred embodiment of the present invention. Some embodiments of the present invention will be described in detail below with reference to the drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0062] like Figure 1 、 Figure 2 and Figure 4 As shown, an embodiment of the present invention provides a three-dimensional printer, including a shell 1, a printing platform 2, a light-curing mechanism 3 and a reprocessing mechanism; the reprocessing mechanism is arranged in the shell 1; the printing platform 2 is movably arranged in the shell 1; the light-curing mechanism 3 is movably arranged in the shell 1, and the light-curing mechanism 3 is used to move between a first position and a second position relative to the shell 1. In the first position, the light-curing mechanism 3 is located in the moving path of the printing platform 2, and the printing platform 2 is used to move to the light-curing mechanism 3 to print the model. In the second position, the light-curing mechanism 3 leaves the moving path of the printing platform 2, and the printing platform 2 is used to move to the reprocessing mechanism so that the reprocessing mechanism reprocesses the model; the light-curing mechanism 3 includes a material trough 32 and a light source assembly, and the curing light emitted by the light source assembly passes through the material trough 32 to be projected into the material trough 32, and the printing platform 2 is used to move into the material trough 32 to print the model.

[0063] Among them, the printing platform 2 is used to move to the light-curing mechanism 3 to print the model, that is, the printing platform 2 can be in contact with the light-curing mechanism 3, or there is a gap between the printing platform 2 and the light-curing mechanism 3, as long as the model can be printed; similarly, the printing platform 2 is used to move to the reprocessing mechanism, that is, the printing platform 2 can be in contact with the reprocessing mechanism, or there is a gap between the printing platform 2 and the reprocessing mechanism, as long as the reprocessing mechanism can reprocess the model, such as cleaning the model.

[0064] In the 3D printer provided by the embodiment of the present invention, when the light-curing mechanism 3 is in the first position, the light-curing mechanism 3 can be located in the moving path of the printing platform 2, and the printing platform 2 can move into the material tank 32 of the light-curing mechanism 3 to print the model. When the light-curing mechanism 3 is in the second position, the light-curing mechanism 3 can be moved out of the moving path of the printing platform 2. At this time, the light-curing mechanism 3 does not hinder the movement of the printing platform 2 along its moving path, thereby allowing the printing platform 2 to move to the reprocessing mechanism for reprocessing the model, such as cleaning the model or performing a secondary curing. In this way, when it is necessary to print the model, the light-curing mechanism 3 can be controlled to move to the first position, and the printing platform 2 can be moved into the material tank 32 of the light-curing mechanism 3 to print the model. When the model is printed and needs to be reprocessed, such as cleaning and curing the model, the light-curing mechanism 3 can be controlled to move to the second position, and the printing platform 2 can be moved to the reprocessing mechanism for reprocessing the model. That is to say, the three-dimensional printer provided by the embodiment of the present invention can not only print models, but also reprocess models. The printing and reprocessing processes are completed in the same device, without the need for other equipment. The operation is simple and convenient, and the printing efficiency is improved.

[0065] Among them, the light curing mechanism 3 is movably arranged in the shell 1. When the light curing mechanism 3 is in the first position, it can be located inside the shell 1. When the light curing mechanism 3 is in the second position, at least part of the light curing mechanism 3 can be located outside the shell 1, thereby reducing the volume of the shell 1 and improving space utilization.

[0066] For ease of use, in some embodiments, see Figure 2 The 3D printer may further include a driving component 4, which is connected to the light-curing mechanism 3 and is used to drive the light-curing mechanism 3 to move between the first position and the second position.

[0067] When it is necessary to print a model, the drive component 4 can be controlled to drive the light-curing mechanism 3 to move to the first position, and the printing platform 2 can be moved into the material trough 32 of the light-curing mechanism 3 to print the model. When the model is printed and needs to be reprocessed, the drive component 4 can be controlled to drive the light-curing mechanism 3 to move to the second position, and the printing platform 2 can be moved to the reprocessing mechanism to reprocess the model.

[0068] In some embodiments, see Figures 2 to 5 The driving assembly 4 may include a driving member, a rack 41 and a gear 42. The rack 41 is provided on one of the light-curing mechanism 3 and the housing 1, and the rack 41 extends along the moving direction of the light-curing mechanism 3. The gear 42 is rotatably provided on the other of the light-curing mechanism 3 and the housing 1. The driving member is connected to the gear 42, and the gear 42 is meshed with the rack 41 to drive the light-curing mechanism 3 to move between the first position and the second position.

[0069] When the driving member is started, the gear 42 can engage with the rack 41 to generate an interaction force between the two, thereby enabling relative movement between the light-curing mechanism 3 and the housing 1, and the direction of the relative movement is the extension direction of the rack 41, thereby enabling the light-curing mechanism 3 to move between the first position and the second position.

[0070] In the above embodiment, since the space occupied by the drive assembly 4 is relatively small and the meshing transmission between the gear 42 and the rack 41 is more stable, the drive assembly 4 can achieve smooth driving of the light-curing mechanism 3 in a relatively narrow space. This not only saves the space occupied by the drive assembly 4 and facilitates the miniaturization of the 3D printer, but also improves the movement smoothness and positioning accuracy of the light-curing mechanism 3, thereby facilitating improved printing quality and printing accuracy of the model.

[0071] It should be noted that in the embodiment of the present invention, the positions of the gear 42 and the rack 41 are not limited, as long as they can mesh with each other to generate relative movement between the light-curing mechanism 3 and the housing 1. For ease of use, in a specific implementation, the gear 42 can be rotatably mounted on the light-curing mechanism 3, and the rack 41 can be mounted on the housing 1.

[0072] In some embodiments, see Figure 3 and Figure 5 , with the direction of movement from the first position to the second position as the forward direction, the light curing mechanism 3 includes a first end located in the forward direction and a second end opposite to the first end; the rack 41 includes a third end located in the forward direction and a fourth end opposite to the third end; the housing 1 includes a first side located in the forward direction and a second side opposite to the second side;

[0073] Among them, if the gear 42 is rotatably set on the light-curing mechanism 3, the rack 41 is set on the housing 1, and the gear 42 is rotatably set at the second end; the third end extends to the first side, and the fourth end extends to the second side; if the gear 42 is rotatably set on the housing 1, the rack 41 is set on the light-curing mechanism 3, and the gear 42 is rotatably set on the first side; the third end extends to the first end, and the fourth end extends to the second end, this can increase the moving stroke of the light-curing mechanism 3. In other words, such a structural setting can enable the driving component 4 to maximize the stroke of the light-curing mechanism 3 in a narrow space, thereby ensuring that the light-curing mechanism 3 can be moved into place, thereby ensuring the reliable printing of the model and the reprocessing of the model.

[0074] In some embodiments, the rack 41 may be a flexible rack that is bendable along its length. The drive assembly 4 may further include a first roller 43 rotatably mounted on one of the light-curing mechanism 3 and the housing 1. The first roller 43 and the gear 42 are spaced apart along the direction of movement of the light-curing mechanism 3, and the rotation direction of the first roller 43 is consistent with the rotation direction of the gear 42. The rack 41 is wound around the gear 42 and the first roller 43 so that the rack 41 wraps around the outside of the gear 42. The rack 41 may be a flexible rack and may be similar to a toothed conveyor belt.

[0075] In the above embodiment, by providing the first roller 43, the rack 41 is successively arranged on the gear 42 and the first roller 43, so that the rack 41 can wrap around the gear 42, thereby increasing the meshing area of ​​the gear 42 and the rack 41, avoiding slipping during the meshing transmission between the two, and thus improving the smoothness of the meshing transmission between the gear 42 and the rack 41; at the same time, the rack 41 passes around the first roller 43, and the first roller 43 can also adjust the tension of the rack 41, better avoiding loosening or slipping during the transmission process, thereby further improving the stability of the meshing transmission between the gear 42 and the rack 41, and further improving the movement smoothness and positioning accuracy of the light curing mechanism 3.

[0076] In some embodiments, the first roller 43 may be an idler wheel that is meshed with the rack. An idler wheel is a gear that is primarily used to change the direction of transmission without changing the transmission ratio, making it more convenient to use and providing a smoother transmission.

[0077] In some embodiments, see Figure 3 、 Figure 5 、 Figures 8 to 11The portion of the rack 41 wound around the gear 42 and the first roller 43, as well as the portion between the gear 42 and the first roller 43, extend in an S-shape. This further increases the meshing area between the gear and the rack, thereby better preventing slippage during meshing transmission between the two, and further improving the smoothness of the meshing transmission between the gear 42 and the rack 41.

[0078] It is understood that the circumferential length of the gear 42 wrapped around the rack 41 can be adjusted by adjusting the diameter of the first roller 43. Specifically, without affecting the smooth meshing and transmission between the rack 41 and the gear 42, the rack 41 can wrap around approximately three-quarters of the circumference of the gear 42, thereby ensuring smooth transmission between the two.

[0079] For ease of use, the first roller 43 can be provided on the light curing mechanism 3. Moreover, with the direction of movement from the first position to the second position as the forward direction, the gear 42 can be located in front of the first roller 43. The rack 41 can first pass around the gear 42 and then pass around the first roller 43.

[0080] In some embodiments, the number of drive components 4 can be at least two, at least one drive component 4 is located on one side of the light-curing mechanism 3, and at least another drive component 4 is symmetrically located on the other side of the light-curing mechanism 3, so that at least two drive components 4 drive the light-curing mechanism 3 together, so that the light-curing mechanism 3 can move more smoothly and quickly between the first position and the second position, thereby improving the printing efficiency of the model.

[0081] It is understood that the number of drive assemblies 4 is at least two, and the number of drive members, gears 42, racks 41, and first rollers 43 is at least two each. The at least two drive members correspondingly drive the at least two gears 42 to rotate synchronously, thereby meshing with the at least two racks 21. However, to save costs, the number of drive members can be one, and this one drive member can be connected to the at least two gears 42 via a transmission shaft to drive the at least two gears 42 to rotate synchronously. Specifically, the drive member can be a motor.

[0082] To ensure smooth movement of the light curing mechanism 3 between the first position and the second position, a certain gap may be provided between the light curing mechanism 3 and the housing 1. When the light curing mechanism 3 is in the first position for printing a model, the light curing mechanism 3 is prone to shaking, thereby affecting the printing quality of the model.

[0083] To prevent the light-curing mechanism 3 from shaking while printing a model, in some embodiments, the 3D printer may further include a position-limiting member disposed on one of the light-curing mechanism 3 and the housing 1; and a position-limiting mating member disposed on the other of the light-curing mechanism 3 and the housing 1. When the light-curing mechanism 3 is in the first position, the position-limiting member cooperates with the position-limiting mating member to restrict the movement of the light-curing mechanism 3 relative to the housing 1. It will be appreciated that the position-limiting member and the position-limiting mating member may also define the end point of movement of the light-curing mechanism 3.

[0084] Among them, when the light-curing mechanism 3 is in the first position for model printing, the limiting member and the limiting matching member can cooperate with each other, thereby limiting the movement of the light-curing mechanism 3 relative to the shell 1, thereby avoiding the shaking of the light-curing mechanism 3 and improving the printing quality of the model.

[0085] The limiting member and the matching limiting member can each have a variety of structural forms, as long as they can restrict the movement of the light-curing mechanism 3 relative to the housing 1. For example, a retaining groove can be provided on the inner wall of the housing 1, and a blind hole can be provided in the light-curing mechanism 3. A sphere is connected to the blind hole via a spring, and a portion of the sphere extends out of the blind hole. When the light-curing mechanism 3 switches between the first and second positions, a portion of the sphere can be retracted into the blind hole under the pressure of the housing 1. When the light-curing mechanism 3 is in the first position, the sphere faces the retaining groove, and the spring force allows a portion of the sphere to extend out of the blind hole and engage within the retaining groove, thereby limiting the position of the light-curing mechanism 3.

[0086] For ease of use, in some embodiments, see Figure 6 and Figure 7 The limiting member may include a protrusion 5; the limiting matching member includes a second roller 6, which is rotatably connected to the other one of the light-curing mechanism 3 and the shell 1, and the rolling direction of the second roller 6 is consistent with the moving direction of the light-curing mechanism 3. The second roller 6 and the protrusion 5 are relatively arranged in the moving direction of the printing platform 2; when the light-curing mechanism 3 switches between the first position and the second position, the second roller 6 is rollingly connected to the light-curing mechanism 3 or the shell 1, and when the light-curing mechanism 3 is in the first position, the second roller 6 abuts against the protrusion 5.

[0087] Because the wobble of the light-curing mechanism 3 relative to the housing 1 during model printing occurs primarily in the direction of movement of the printing platform 2, in the above embodiment, the second roller 6 and the protrusion 5 are arranged relative to each other in the direction of movement of the printing platform 2. That is, when the light-curing mechanism 3 is in the first position, the second roller 6 and the protrusion 5 can be arranged relative to each other and abut against each other, thereby limiting the wobble of the light-curing mechanism 3 and ensuring reliable operation. Furthermore, by configuring the limiting mating member as a roller structure, the second roller 6 can be in rolling connection with the light-curing mechanism 3 or the housing 1 when the light-curing mechanism 3 switches between the first and second positions, thereby preventing the limiting mating member from interfering with the movement of the light-curing mechanism 3 and ensuring smooth movement of the light-curing mechanism 3.

[0088] For further convenience of use, the second roller 6 can be provided on the housing 1 , and the protrusion 5 can be provided on the light curing mechanism 3 .

[0089] In some embodiments, see Figure 6 and Figure 7 A groove 51 can be provided on the surface of the protrusion 5 opposite to the second roller 6, and the groove 51 matches the outer contour shape of the second roller 6; when the light curing mechanism 3 is in the first position, a part of the second roller 6 is limited in the groove 51, thereby improving the stability of the abutment between the protrusion 5 and the second roller 6, and further improving the limiting reliability of the light curing mechanism 3.

[0090] In some embodiments, see Figure 6 and Figure 7 The protrusion 5 includes a side surface 52 connected to the surface of the light-curing mechanism 3 or the surface of the housing 1. The side surface 52 is an inclined surface, which can be used to be rollingly connected with the second roller 6 to guide a part of the second roller 6 to enter or leave the groove 51, thereby facilitating the second roller 6 to be stuck in the groove 51 and smoothly realizing the limiting of the light-curing mechanism 3.

[0091] The light-curing mechanism 3 can be generally rectangular in shape. In some embodiments, the number of protrusions 5 and the number of second rollers 6 can each be at least four. When the light-curing mechanism 3 is in the first position, at least four protrusions 5 correspond to at least four second rollers 6 and are located at the four corners of the light-curing mechanism 3.

[0092] In some embodiments, see Figure 2 、 Figure 4 and Figure 8 The 3D printer may further include a cover 7, which is a flexible cover. One end of the cover 7 is connected to the housing 1, and the other end of the cover 7 is connected to the light curing mechanism 3. When the light curing mechanism 3 is in the first position, the cover 7 is in a compressed state; when the light curing mechanism 3 is in the second position, the cover 7 is in a stretched state, and the cover 7 is arranged outside the light curing mechanism 3.

[0093] The cover 7 is a flexible member that can be compressed to allow the light-curing mechanism 3 to move to a first position for model printing. It can also be stretched to allow the light-curing mechanism to move to a second position. In the second position, the stretched cover 7 can be positioned over the light-curing mechanism 3, thereby trapping odors from the resin in the trough 32 and the curing light from the light source assembly within the cover 7, thereby preventing environmental pollution. Specifically, the cover 7 can be an accordion-shaped protective cover for greater reliability.

[0094] In some embodiments, the printing platform 2 can be movably disposed in the housing 1 along a vertical direction; the light curing mechanism 3 can be movably disposed in the housing 1 along a horizontal direction.

[0095] When the light-curing mechanism 3 is in the first position, the printing platform 2 can move up and down to print the model in the material tank 32 of the light-curing mechanism 3. When the model is printed, the light-curing mechanism 3 can move to the second position to avoid the printing platform 2. At this time, the printing platform 2 can move down to the reprocessing mechanism for reprocessing of the model.

[0096] In some embodiments, the reprocessing mechanism may include a cleaning component. When the photocuring mechanism 3 is in the first position, the cleaning component may be located below the photocuring mechanism 3; the cleaning component 4 may include a barrel body, which contains a cleaning liquid such as alcohol, and the opening of the barrel body is opposite to the printing surface of the printing platform 2.

[0097] When the model is printed, the light curing mechanism 3 can be moved to the second position to clear the movement path of the printing platform 2, allowing the printing platform 2 to move downward into the barrel of the cleaning assembly 4 for cleaning. In addition, to improve the cleaning effect of the model, the printing platform 2 can reciprocate up and down during the cleaning process.

[0098] In some embodiments, the reprocessing mechanism may further include a post-curing component, which may include a light-curing lamp. When the light-curing mechanism 3 is in the first position, the post-curing component may be located around the light-curing mechanism 3, and the light-curing lamp is used to emit curing light toward the moving path of the printing platform 2.

[0099] After the model is cleaned, the print platform 2 moves upward to the post-curing assembly, where the curing light emits curing light to illuminate the model on the print platform 2, thereby achieving secondary curing of the model. Furthermore, to enhance the secondary curing effect of the model, the print platform 2 can reciprocate up and down during the curing process.

[0100] In some embodiments, see Figure 8The light-curing mechanism 3 may further include a bracket 31, on which the material trough 32 and the light source assembly may be arranged, and the bracket 31 may be movably arranged in the housing 1; when the light-curing mechanism 3 is in the first position, the printing surface of the printing platform 2 corresponds to the opening of the material trough 32.

[0101] The material tank 32 contains a photosensitive material, such as a photosensitive resin. When a model needs to be printed, the drive assembly can be controlled to drive the light curing mechanism 3 to the first position. At this point, the printing platform 2 can be lowered into the material tank 32. Simultaneously, the light source assembly can emit curing light, which can pass through the material tank 32 and be projected into the material tank 32. The printing platform 2 moves up and down, ultimately printing the model.

[0102] In some embodiments, the light source assembly may include an exposure screen and a light source module arranged on a bracket 31, and the curing light emitted by the light source module is projected into the material trough 32 through the exposure screen; or, the light source assembly may be an OLED light source; or the light source assembly may be a DLP light source.

[0103] The light source assembly may include an exposure screen and a light source module. The light source module may be configured to emit light, thereby controlling the area to be exposed by displaying a pattern on the exposure screen. Alternatively, the light source assembly may be a self-luminous display device. In this case, no exposure screen is required; the light source assembly itself can display a pattern to control the area to be exposed. Specifically, the light source assembly may be an OLED (Organic Light-Emitting Diode) light source or a DLP (Digital Light Processing) light source.

[0104] In some embodiments, see Figure 10 A first slide rail can be provided on the shell 1, and the first slide rail extends along the moving direction of the light curing mechanism 3; a second slide rail 8 can be provided on the bracket 31, and the second slide rail 8 extends along the moving direction of the light curing mechanism 3. The first slide rail and the second slide rail 8 are slidably connected to realize the movement of the light curing mechanism 3 on the shell 1, which has a simple structure and is reliable to use.

[0105] In some embodiments, the 3D printer may further include a detection component, which may be disposed on the housing 1 and / or the light-curing mechanism 3 and electrically connected to the drive assembly 4. The detection component is configured to send an electrical signal when the light-curing mechanism 3 reaches the first position or the second position to stop the drive assembly.

[0106] When the light-curing mechanism 3 moves to the first position or the second position under the driving action of the driving component 4, the detection component can detect that the light-curing mechanism 3 has moved to the position and send a corresponding electrical signal to make the driving component 4 stop running according to the electrical signal, thereby making the light-curing mechanism 3 stop at the first position or the second position.

[0107] The detection element can have various structural forms, as long as it can generate an electrical signal when the light-curing mechanism 3 reaches the first position or the second position, thereby stopping the drive assembly 4. For example, the detection element can include a light shield and two photoelectric switches, the light shield being disposed on the light-curing mechanism, and the two photoelectric switches being disposed oppositely on the first and second sides of the aforementioned housing; or the detection element can include a magnetic element and two Hall sensors, the magnetic element being disposed on the light-curing mechanism, and the two Hall sensors being disposed oppositely on the first and second sides of the aforementioned housing; or the detection element can include two micro switches, the two micro switches being disposed on the first and second ends of the aforementioned light-curing mechanism, or on the first and second sides of the aforementioned housing.

[0108] Reference numeral 1. A three-dimensional printer comprising:

[0109] Housing 1, printing platform 2, light curing mechanism 3 and reprocessing mechanism;

[0110] The reprocessing mechanism is arranged in the housing 1;

[0111] The printing platform 2 is movably disposed in the housing 1;

[0112] The light-curing mechanism 3 is movably disposed on the housing 1. The light-curing mechanism 3 is configured to move relative to the housing 1 between a first position and a second position. In the first position, the light-curing mechanism 3 is located in a moving path of the printing platform 2, and the printing platform 2 is configured to move to the light-curing mechanism 3 to print the model. In the second position, the light-curing mechanism 3 is out of the moving path of the printing platform 2, and the printing platform 2 is configured to move to a reprocessing mechanism so that the reprocessing mechanism can reprocess the model.

[0113] The light curing mechanism 3 includes a material tank 32 and a light source assembly. The curing light emitted by the light source assembly passes through the material tank 32 and is projected into the material tank 32. The printing platform 2 is used to move into the material tank 32 to print the model.

[0114] Reference numeral 2: The three-dimensional printer according to reference numeral 1, further comprising:

[0115] The driving assembly 4 is connected to the light-curing mechanism 3 and is used to drive the light-curing mechanism 3 to move between the first position and the second position.

[0116] Label 3, based on the 3D printer of label 2,

[0117] The driving assembly 4 includes a driving member, a rack 41 and a gear 42. The rack 41 is provided on one of the light-curing mechanism 3 and the housing 1. The rack 41 extends along the movement direction of the light-curing mechanism 3. The gear 42 is rotatably provided on the other of the light-curing mechanism 3 and the housing 1. The driving member is connected to the gear 42 to drive the gear 42 to rotate. The gear 42 is meshed with the rack 41 to drive the light-curing mechanism 3 to move between the first position and the second position.

[0118] Label 4, based on the 3D printer of label 3,

[0119] With the direction of movement from the first position to the second position as the forward direction, the light curing mechanism 3 includes a first end located in the forward direction and a second end opposite to the first end; the rack 41 includes a third end located in the forward direction and a fourth end opposite to the third end; the housing 1 includes a first side located in the forward direction and a second side opposite to the first side;

[0120] If the gear 42 is rotatably mounted on the light curing mechanism 3, the rack 41 is mounted on the housing 1, and the gear 42 is rotatably mounted on the second end; the third end extends to the first side, and the fourth end extends to the second side;

[0121] If the gear 42 is rotatably disposed on the housing 1 , the rack 41 is disposed on the light curing mechanism 3 , and the gear 42 is rotatably disposed on the first side; the third end extends to the first end, and the fourth end extends to the second end.

[0122] Label 5, based on the 3D printer of label 3,

[0123] The rack 41 is a flexible rack, and the rack 41 can be bent in its length direction;

[0124] The driving assembly 4 further includes a first roller 43, which is rotatably mounted on one of the light-curing mechanism 3 and the housing 1. The first roller 43 and the gear 42 are spaced apart along the moving direction of the light-curing mechanism 3, and the rotation direction of the first roller 43 is consistent with the rotation direction of the gear 42.

[0125] The rack 41 is wound around the gear 42 and the first roller 43 so that the rack 41 is wrapped around the outside of the gear 42;

[0126] The first roller 43 is an idler wheel, which is meshed with the rack 41 .

[0127] No. 6, a 3D printer based on No. 5,

[0128] The portion of the rack 41 wound around the gear 42 and the first roller 43 , and the portion located between the gear 42 and the first roller 43 , extend in an S-shape.

[0129] No. 7, a three-dimensional printer based on No. 5,

[0130] There are at least two drive assemblies 4 , at least one drive assembly 4 is located on one side of the light-curing mechanism 3 , and at least another drive assembly 4 is symmetrically located on the other side of the light-curing mechanism 3 .

[0131] Reference numeral 8. The three-dimensional printer according to reference numeral 1, further comprising:

[0132] A limiting member, which is provided on one of the light curing mechanism 3 and the housing 1;

[0133] A position-limiting fitting, which is provided on the other of the light-curing mechanism 3 and the housing 1;

[0134] When the light-curing mechanism 3 is in the first position, the limiting member cooperates with the limiting matching member to limit the movement of the light-curing mechanism 3 relative to the housing 1 .

[0135] Reference number 9, a three-dimensional printer based on reference number 8,

[0136] The limiting member includes a protrusion 5;

[0137] The limiting mating member includes a second roller 6, which is rotatably connected to the other of the light-curing mechanism 3 and the housing 1. The rolling direction of the second roller 6 is consistent with the movement direction of the light-curing mechanism 3. The second roller 6 and the protrusion 5 are used to be arranged relative to each other in the movement direction of the printing platform;

[0138] When the light curing mechanism 3 switches between the first position and the second position, the second roller 6 is in rolling connection with the light curing mechanism 3 or the housing 1.

[0139] When the light curing mechanism 3 is in the first position, the second roller 6 abuts against the protrusion 5 .

[0140] Reference number 10, a three-dimensional printer based on reference number 9,

[0141] A groove 51 is provided on the surface of the protrusion 5 opposite to the second roller 6, and the groove 51 matches the outer contour shape of the second roller 6;

[0142] When the light curing mechanism 3 is in the first position, a portion of the second roller 6 is confined in the groove 51 .

[0143] Reference number 11, a three-dimensional printer based on reference number 10,

[0144] The protrusion 5 includes a side surface 52 connected to the surface of the light curing mechanism 3 or the surface of the housing 1. The side surface 52 is an inclined surface, which is used to be in rolling connection with the second roller 6 to guide a portion of the second roller 6 to enter or leave the groove 51.

[0145] The number of protrusions 5 and second rollers 6 is at least four respectively;

[0146] When the light-curing mechanism 3 is in the first position, the at least four protrusions 5 correspond to the at least four second rollers 6 and are located at the four corners of the light-curing mechanism 3 .

[0147] Reference numeral 12. The three-dimensional printer according to reference numeral 1, further comprising:

[0148] The cover body 7 is a flexible cover body, one end of the cover body 7 is connected to the housing 1, and the other end of the cover body 7 is connected to the light curing mechanism 3;

[0149] When the light curing mechanism 3 is in the first position, the cover 7 is in a compressed state; when the light curing mechanism 3 is in the second position, the cover 7 is in a stretched state, and the cover 7 is arranged outside the light curing mechanism 3;

[0150] The cover body 7 is an organ protective cover.

[0151] Reference number 13, a three-dimensional printer based on reference number 1,

[0152] The printing platform 2 is movably disposed in the housing 1 along a vertical direction; the light curing mechanism 3 is movably disposed in the housing 1 along a horizontal direction.

[0153] Reference numeral 14, according to the 3D printer based on reference numeral 1, the light curing mechanism 3 further includes a bracket 31, the material trough 32 and the light source assembly are both disposed on the bracket 31, and the bracket 31 is movably disposed on the housing 1;

[0154] When the light curing mechanism 3 is in the first position, the printing surface of the printing platform 2 corresponds to the opening of the material trough 32 .

[0155] Reference number 15, a three-dimensional printer based on reference number 14,

[0156] The housing 1 is provided with a first slide rail, which extends along the moving direction of the light curing mechanism 3;

[0157] The bracket 31 is provided with a second slide rail 8 , which extends along the moving direction of the light curing mechanism 3 . The first slide rail and the second slide rail 8 are slidably connected.

[0158] Reference numeral 16. The 3D printer according to reference numeral 2, further comprising:

[0159] The detection member is arranged on the housing 1 and / or the light-curing mechanism 3 and is electrically connected to the driving assembly 4. The detection member is used to send an electrical signal when the light-curing mechanism reaches the first position or the second position to stop the driving assembly.

[0160] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A three-dimensional printer, characterized in that: include: Housing, printing platform, light curing mechanism and reprocessing mechanism; The reprocessing mechanism is disposed within the housing; The printing platform is movably disposed in the housing; The light-curing mechanism is movably disposed on the housing, and is configured to move relative to the housing between a first position and a second position. In the first position, the light-curing mechanism is located in a moving path of the printing platform, and the printing platform is configured to move to the light-curing mechanism to print the model. In the second position, the light-curing mechanism leaves the moving path of the printing platform, and the printing platform is configured to move to the reprocessing mechanism so that the reprocessing mechanism reprocesses the model. The light curing mechanism includes a material tank and a light source assembly. The curing light emitted by the light source assembly passes through the material tank to be projected into the material tank. The printing platform is used to move into the material tank to print the model.

2. The three-dimensional printer according to claim 1, wherein: Also includes: A driving assembly is connected to the light-curing mechanism and is used to drive the light-curing mechanism to move between the first position and the second position.

3. The three-dimensional printer according to claim 2, characterized in that: The driving assembly includes a driving member, a rack and a gear. The rack is provided on one of the light-curing mechanism and the housing, and extends along the movement direction of the light-curing mechanism. The gear is rotatably provided on the other of the light-curing mechanism and the housing. The driving member is connected to the gear to drive the gear to rotate. The gear is meshed with the rack to drive the light-curing mechanism to move between the first position and the second position.

4. The three-dimensional printer according to claim 3, characterized in that: Taking the direction of movement from the first position to the second position as a forward direction, the light curing mechanism includes a first end located in the forward direction and a second end opposite to the first end; the rack includes a third end located in the forward direction and a fourth end opposite to the third end; the housing includes a first side located in the forward direction and a second side opposite to the first side; If the gear is rotatably mounted on the light curing mechanism, the rack is mounted on the housing, and the gear is rotatably mounted on the second end; the third end extends to the first side, and the fourth end extends to the second side; If the gear is rotatably disposed on the housing, the rack is disposed on the light curing mechanism, and the gear is rotatably disposed on the first side, the third end extends to the first end, and the fourth end extends to the second end.

5. The three-dimensional printer according to claim 3, characterized in that: The rack is a flexible rack that can be bent in its length direction; The driving assembly further includes a first roller, the first roller being rotatably disposed on one of the light-curing mechanism and the housing, the first roller and the gear being spaced apart along the moving direction of the light-curing mechanism, and the rotation direction of the first roller being consistent with the rotation direction of the gear; The rack is wound around the gear and the first roller so that the rack is wrapped around the outside of the gear; The first roller is an idler wheel, and the idler wheel is meshed and connected with the rack.

6. The three-dimensional printer according to claim 5, characterized in that: The portion of the rack wound around the gear and the first roller, and the portion located between the gear and the first roller, extend in an S shape.

7. The three-dimensional printer according to claim 5, characterized in that: The number of the driving components is at least two, at least one of the driving components is located on one side of the light-curing mechanism, and at least another of the driving components is symmetrically located on the other side of the light-curing mechanism.

8. The three-dimensional printer according to claim 1, wherein: Also includes: a limiting member, the limiting member being provided on one of the light curing mechanism and the housing; a position-limiting fitting, the position-limiting fitting being provided on the other of the light-curing mechanism and the housing; When the light-curing mechanism is in the first position, the limiting component cooperates with the limiting matching component to limit the movement of the light-curing mechanism relative to the housing.

9. The three-dimensional printer according to claim 8, characterized in that: The limiting member includes a protrusion; The limiting fitting includes a second roller, the second roller being rotatably connected to the other of the light-curing mechanism and the housing, the rolling direction of the second roller being consistent with the moving direction of the light-curing mechanism, and the second roller and the protrusion being arranged relative to each other in the moving direction of the printing platform; When the light curing mechanism switches between the first position and the second position, the second roller is in rolling connection with the light curing mechanism or the housing. When the light curing mechanism is in the first position, the second roller abuts against the protrusion.

10. The three-dimensional printer according to claim 9, characterized in that: A groove is provided on the surface of the protrusion opposite to the second roller, and the groove matches the outer contour shape of the second roller; When the light curing mechanism is in the first position, a portion of the second roller is confined in the groove.

11. The three-dimensional printer according to claim 10, wherein: The protrusion includes a side surface connected to the surface of the light curing mechanism or the surface of the housing, the side surface is an inclined surface, and the inclined surface is used to be in rolling connection with the second roller to guide a part of the second roller to enter or leave the groove; The number of the protrusions and the number of the second rollers are at least four respectively; When the light-curing mechanism is in the first position, at least four of the protrusions correspond to at least four of the second rollers and are located at four corners of the light-curing mechanism.

12. The three-dimensional printer according to claim 1, wherein: Also includes: A cover body, wherein the cover body is a flexible cover body, one end of the cover body is connected to the housing, and the other end of the cover body is connected to the light curing mechanism; When the light curing mechanism is in the first position, the cover is in a compressed state; when the light curing mechanism is in the second position, the cover is in a stretched state, and the cover is arranged outside the light curing mechanism; The cover body is an organ protective cover.

13. The three-dimensional printer according to claim 1, wherein: The printing platform is movably arranged in the shell along the vertical direction; the light curing mechanism is movably arranged in the shell along the horizontal direction.

14. The three-dimensional printer according to claim 1, wherein: The light curing mechanism further includes a bracket, the material trough and the light source assembly are both arranged on the bracket, and the bracket is movably arranged on the housing; When the light curing mechanism is in the first position, the printing surface of the printing platform corresponds to the opening of the material trough.

15. The three-dimensional printer according to claim 14, characterized in that: The housing is provided with a first slide rail, and the first slide rail extends along the moving direction of the light curing mechanism; The bracket is provided with a second slide rail, the second slide rail extends along the moving direction of the light curing mechanism, and the first slide rail and the second slide rail are slidably connected.

16. The three-dimensional printer according to claim 2, characterized in that: Also includes: A detection member is provided on the housing and / or the light-curing mechanism and is electrically connected to the drive assembly, and is used to send an electrical signal when the light-curing mechanism reaches the first position or the second position to stop the drive assembly.

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