Fence for 3D printer and 3D printer

By designing fences for 3D printers, the problems of dislocation and insufficient security of printing models are solved, achieving higher printing accuracy and security.

CN222522038UActive Publication Date: 2025-02-25SHENZHEN TUOZHU TECH CO LTD
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Patent Information

Application Number
CN202323349377.1
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-07
Publication Date
2025-02-25
Estimated Expiration
2033-12-07

AI Technical Summary

Technical Problem

Existing 3D printers are prone to external forces to collide with the hot bed during printing, resulting in disassembly of the printing model and insufficient safety, which may lead to user injury or damage to the hot bed.

Method used

A fence for 3D printers is designed, and connected to the 3D printer through a connecting part. The fence part surrounds the printing platform on a horizontal plane to form an enclosed area to prevent external forces from colliding and foreign objects from entering, ensuring the stability and safety of the printing platform.

Benefits of technology

It effectively avoids the printing model strata, improves the accuracy of model printing, and enhances the security of the printing process, preventing users or foreign objects from entering the printing area.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a fence for a 3D printer and the 3D printer, and the fence comprises a connecting part connected with the 3D printer; the fence part is connected with the connecting part; the projection of the fence part on the horizontal plane forms at least part of the boundary of an enclosed area, and the projection of a motion area of a printing platform of the 3D printer on the horizontal plane is located in the enclosed area; the bottom of the fence part is lower than the bearing surface of the printing platform, the top of the fence part is higher than the bearing surface of the printing platform, and the horizontal plane is parallel to the bearing surface; according to the method, the model printing accuracy is improved, and the printing safety is improved.
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Description

Technical Field

[0001] The present application relates to the field of three-dimensional printing, and in particular to a fence for a 3D printer and a 3D printer. Background Art

[0002] 3D printer (also known as three-dimensional printer or stereo printer) is a kind of rapid prototyping process equipment. The 3D printing technology currently available for 3D printers is fused deposition modeling (FDM). FDM is a technology that uses materials such as powdered metal or plastic based on digital models to construct three-dimensional objects by printing layer by layer.

[0003] At present, in the 3D printers with open structures such as gantry structure and cantilever structure, external force may collide with the hot bed during printing, and the hot bed will move in the printing plane, which will cause the printed model to be misplaced and the model to be printed incorrectly. In addition, during the printing process, the user's limbs or other foreign objects may enter the printing area, which may cause injury to the user or damage to the hot bed. Utility Model Content

[0004] In order to solve the problem of staggered printing of models and insufficient safety during model printing, the present application provides a fence for a 3D printer and a 3D printer.

[0005] The first aspect of the present application provides a fence for a 3D printer, comprising:

[0006] A connecting part, connected to the 3D printer;

[0007] A fence portion is connected to the connecting portion; the fence portion is projected on a horizontal plane to form at least a partial boundary of an enclosed area, and the projection of the movement area of ​​the printing platform of the 3D printer on the horizontal plane is located within the enclosed area; the bottom height of the fence portion is less than the height of the bearing surface of the printing platform, the top height of the fence portion is greater than the height of the bearing surface of the printing platform, and the horizontal plane is parallel to the bearing surface.

[0008] The fence part is connected to the 3D printer through the connecting part, and surrounds at least a part of the printing platform in the horizontal plane, and surrounds the printing platform in the height direction. When an external force collision occurs, the fence part prevents the external force from colliding with the platform, so that the printing platform is not collided by the external force, thereby avoiding the phenomenon of misalignment of the printed model and improving the accuracy of model printing; and the fence part can prevent users or other foreign objects from entering the movement area of ​​the printing platform, thereby improving the safety of printing.

[0009] In a possible embodiment, the 3D printer includes a base, which is used to be slidably connected to the printing platform, the projection of the movement area of ​​the printing platform on the horizontal plane exceeds the projection of the base on the horizontal plane in the sliding direction, the sliding direction is the direction in which the printing platform can slide relative to the base, and the connecting portion is detachably connected to the base; at least part of the boundary of the enclosed area includes two side boundaries or one side boundary of the enclosed area in the sliding direction.

[0010] In a possible implementation, the connection portion is used to be connected to a side surface of the base, and the side surface of the base is at least one side surface of two side surfaces of the base in the sliding direction.

[0011] In a possible implementation, the connection portion includes a male buckle or a female buckle in a snap-fit ​​structure, which is used for snap-fit ​​connection with the base.

[0012] In a possible embodiment, the fence also includes a limiting portion, one end of the connecting portion is inserted into the socket on the side of the base, one end of the limiting portion is abutted against the abutment surface of the side, the abutment surface is located below the socket, and the other end of the limiting portion is connected to the bottom of the connecting portion to limit the connecting portion from bending downward.

[0013] In a possible implementation, the fence further includes a supporting portion, one end of the supporting portion is connected to the fence portion, and the other end of the supporting portion is connected to the limiting portion, and the supporting portion is used to limit the downward movement of the fence portion.

[0014] In a possible implementation, the fence further includes a support portion, one end of the support portion is connected to the fence portion, and the other end of the support portion is connected to the 3D printer, and the support portion is used to limit the downward movement of the fence portion.

[0015] In a possible implementation, one end of the support portion is connected to the bottom of the fence portion, and when the fence portion moves downward, the support portion undergoes elastic deformation, and the elastic deformation provides an upward elastic force for the fence portion.

[0016] A second aspect of the present application provides an embodiment of a 3D printer, comprising: a 3D printer print head, a drive device, a printing platform and the fence as described above, wherein the 3D printer print head is arranged above the printing platform, and the drive device is used to drive the 3D printer print head to produce relative displacement with the printing platform.

[0017] In a possible embodiment, the 3D printer includes a base, which is slidably connected to the printing platform, the projection of the movement area of ​​the printing platform on the horizontal plane exceeds the projection of the base on the horizontal plane in the sliding direction, the sliding direction is the direction in which the printing platform can slide relative to the base, the connecting portion is detachably or fixedly connected to the base, and at least part of the boundary of the enclosed area includes two side boundaries or one side boundary of the enclosed area in the sliding direction.

[0018] In a possible implementation, the connection portion is used to be connected to a side surface of the base, and the side surface of the base is at least one side surface of two side surfaces of the base in the sliding direction.

[0019] In a possible implementation, the base is provided with a memory card slot, and the memory card slot is located on a side of the base connected to the connecting portion.

[0020] In a possible implementation, the base is provided with a memory card slot, and the memory card slot is located in a side area of ​​the movement area in the sliding direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a fence for a 3D printer according to an embodiment of the present application;

[0022] Figure 2 A schematic diagram of a connection structure between a fence and a base for a 3D printer according to an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a connection structure between a fence and a base for a 3D printer according to an embodiment of the present application;

[0024] Figure 4 A schematic diagram of the structure of a 3D printer according to an embodiment of the present application. DETAILED DESCRIPTION

[0025] The technical solutions in the implementation modes of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the implementation modes of the present application.

[0026] The implementation of the technical solution of the present application is further described in detail below in conjunction with the accompanying drawings.

[0027] In the present application, unless otherwise clearly specified and limited, the terms "fixed", "set", "installed", and "connected" may mean that one element is directly on another element or there may be an element in the middle, "fixed" may be understood as "fixed connection", and "set", "installed", and "connected" may all be understood as a type of connection. At the same time, the connection may include a mechanical connection or a structural connection, and may also be understood as an electrical connection, a thermal connection, or a communication connection. For mechanical or structural connections, the connection includes a detachable connection and a non-detachable connection. For example, a fixed connection may include a detachable fixed connection, a non-detachable fixed connection, or an integrally formed connection. A rotating connection may include a detachable rotating connection and a non-detachable rotating connection. A sliding connection may include a detachable sliding connection and a non-detachable sliding connection. The connection may also be a direct connection or an indirect connection through a component. For example, for a detachable fixed connection, it means that in the installed state, the positional relationship between at least two connected objects can be fixed; similar examples include a rotating connection, a sliding connection, and the like.

[0028] Reference Figure 1 , showing a schematic structural diagram of a fence for a 3D printer according to an embodiment of the present application; the fence for a 3D printer comprises:

[0029] A connecting part 100 connected to the 3D printer;

[0030] The fence part 200 is connected to the connecting part 100; the fence part 200 is projected on a horizontal plane to form at least a partial boundary of an enclosed area, and the movement area of ​​the printing platform 3 of the 3D printer is located within the enclosed area; the bottom height of the fence part 200 is less than the height of the bearing surface of the printing platform 3, the top height of the fence part 200 is greater than the height of the bearing surface of the printing platform 3, and the horizontal plane is parallel to the bearing surface. Thus, the fence part 200 limits the movement area of ​​the printing platform 3. Among them, all areas reached by the printing platform 3 during the movement belong to the movement area of ​​the printing platform 3.

[0031] In the embodiment of the present application, the fence may be composed of a connection part 100 and a fence part 200. One end of the connection part 100 is connected to the 3D printer so that the fence as a whole is connected to the 3D printer. The connection between the connection part 100 and the 3D printer may be a detachable connection, that is, the connection part 100 may be connected to the 3D printer through its own shape, a universal standard part, or a viscous medium.

[0032] The other end of the connecting portion 100 is connected to the fence portion 200, and the fence portion 200 is connected to the 3D printer through the connecting portion 100 to be fixed to the periphery of the 3D printer. The fence portion 200 surrounds the printing platform 3 of the 3D printer. The fence portion 200 is projected on a horizontal plane to form at least part of the boundary of the enclosed area. The horizontal plane is parallel to the bearing surface of the printing platform 3. The projection of the movement area of ​​the printing platform 3 of the 3D printer on the horizontal plane is located within the enclosed area, that is, the range involved in the movement of the printing platform 3 on the horizontal plane does not exceed the edge of the enclosed area. Among them, the enclosed area of ​​the fence portion 200 on the horizontal plane can be a fully enclosed enclosed area, that is, it completely surrounds the printing platform 3; the enclosed area can be a semi-enclosed enclosed area, that is, it partially surrounds the printing platform 3. For example, the printing platform 3 is a rectangular plane, and the enclosed area can be an area of ​​a closed figure such as a rectangle, a polygon, a circle, etc., that is, a fully enclosed enclosed area; the enclosed area can be an area formed by enclosing three edges with an opening, that is, a semi-enclosed enclosed area. In the height direction, the bottom height of the fence portion 200 is less than the height of the bearing surface of the printing platform 3, and the top height of the fence portion 200 is greater than the height of the bearing surface of the printing platform 3, that is, in the height direction, the bearing surface of the printing platform 3 is located in the range from the top of the fence portion 200 to the bottom of the fence portion 200, and the fence portion 200 surrounds the printing platform 3 in the height direction. The fence portion 200 limits the movement area of ​​the printing platform 3 in both the horizontal plane and the height direction to protect the printing platform 3. Among them, the height direction is a direction perpendicular to the horizontal plane.

[0033] The embodiment of the present application is connected to the 3D printer via a connecting portion 100; a fence portion 200 is connected to the connecting portion 100; the fence portion 200 is projected on a horizontal plane to form at least a partial boundary of an enclosed area, and the movement area of ​​the printing platform 3 of the 3D printer is located within the enclosed area; the bottom height of the fence portion 200 is less than the height of the bearing surface of the printing platform 3, and the top height of the fence portion 200 is greater than the height of the bearing surface of the printing platform 3, so that the fence portion 200 limits the movement area of ​​the printing platform 3, and the horizontal plane is parallel to the bearing surface; the connecting portion 100 When connected to the 3D printer, the fence portion 200 forms at least a partial boundary of the enclosed area on the horizontal plane, and surrounds at least a portion of the printing platform 3 on the horizontal plane; and in the height direction, the fence portion 200 surrounds the printing platform 3, and limits the printing area of ​​the printing platform 3. Even if an external force collision occurs, the fence portion 200 bears the external force collision and prevents the external force from colliding with the platform, so that the printing platform 3 is not collided by the external force, thereby avoiding the phenomenon of misalignment of the printed model and improving the accuracy of model printing; and the fence portion 200 can prevent users or other foreign objects from entering the movement area of ​​the printing platform 3, thereby improving the safety of printing.

[0034] In an optional implementation of the present application, refer to Figure 2 The 3D printer includes a base 33, and the base 33 is used to be slidably connected to the printing platform 3. The projection of the moving area of ​​the printing platform 3 on the horizontal plane exceeds the projection of the base 33 on the horizontal plane in the sliding direction. The sliding direction is the direction in which the printing platform 3 can slide relative to the base 33. The connecting part 100 is detachably connected to the base 33; at least part of the boundary of the enclosed area includes the two side boundaries or one side boundary of the enclosed area in the sliding direction, or the area surrounded by the fence part 200 includes the two side areas or one side area of ​​the moving area in the sliding direction.

[0035] The base 33 in the 3D printer can be slidably connected to the printing platform 3. The projection of the motion area of ​​the printing platform 3 on the horizontal plane exceeds the projection of the base 33 on the horizontal plane in the sliding direction. The sliding direction is the direction in which the printing platform 3 can slide relative to the base 33, that is, the sliding range of the printing platform 3 on the base 33 can be greater than the range of the projection of the base 33 on the horizontal plane, so that there is a larger sliding range for printing. In this case, the protection of the fence of the present application is particularly needed. The fence part surrounds at least part of the printing platform 3. The area surrounded by the fence part 200 can be the two side areas or one side area of ​​the motion area in the sliding direction. The printing platform 3 is protected by a semi-enclosed area, or the fence part 200 is projected on the horizontal plane to form at least part of the boundary of the enclosed area. At least part of the boundary of the enclosed area includes the two side boundaries or one side boundaries of the enclosed area in the sliding direction. Compared with the protection in the non-sliding direction, the protection in the sliding direction is more significant, which is beneficial to the 3D printer not occupying too much space. And the connecting part 100 is detachably connected to the base 33, so that the fence can be installed on the 3D printer according to needs.

[0036] In an optional implementation of the present application, refer to Figure 3 The connecting portion 100 is used to connect with the side surface of the base 33, and the side surface of the base 33 is at least one of the two side surfaces of the base 33 in the sliding direction.

[0037] The connecting portion 100 can be connected to the side of the base 33, and the side of the base 33 is at least one of the two side surfaces of the base 33 in the sliding direction. By setting a fence on the side of the base 33, the sliding direction can be better protected, and the space of the base 33 can be reasonably utilized without affecting the original function of the base 33, and can be better applied to a 3D printer.

[0038] In an optional implementation of the present application, the connecting portion 100 includes a male buckle or a female buckle in a snap-fit ​​structure, which is used for snap-fit ​​connection with the base 33.

[0039] The connecting part 100 is a male buckle or a female buckle in a snap-fit ​​structure. The corresponding part of the 3D printer connected to the connecting part 100 is provided with a female buckle or a male buckle, which forms a snap-fit ​​structure with the connecting part 100, so that the base 33 is snap-fitted to the connecting part 100, and the user can conveniently install or remove the fence through the snap-fit.

[0040] In an optional implementation of the present application, the fence also includes a limiting portion 300, one end of the connecting portion 100 is inserted into the socket on the side of the base 33, one end of the limiting portion 300 abuts against the abutment surface of the side, and the abutment surface is located below the socket, and the other end of the limiting portion 300 is connected to the bottom of the connecting portion 100 to limit the connecting portion 100 from bending downward.

[0041] If the connecting portion 100 bends downward, a greater force will be applied to the abutting surface through the limiting portion 300, so that the abutting surface will apply a greater reaction force to the connecting portion 100 through the limiting portion 300, thereby limiting the bending of the connecting portion 100 downward, preventing the fence portion 200 connected to the connecting portion 100 from falling, and thus maintaining the position of the fence. In the embodiment of the present application, the downward direction is the direction from the top of the fence portion 200 to the bottom of the fence portion 200. Correspondingly, the upward direction is the direction from the bottom of the fence portion 200 to the top of the fence portion 200.

[0042] In an optional implementation of the present application, the fence also includes a support portion 400, one end of the support portion 400 is connected to the fence portion 200, and the other end of the support portion 400 is connected to the limiting portion 300, and the support portion 400 is used to limit the downward movement of the fence portion 200.

[0043] The descent of the fence portion 200 will cause an increase in the force exerted by the support portion 400 on the limiting portion 300. The reaction force exerted by the abutment surface on the limiting portion 300 can be transmitted to the fence portion 200 through the support portion 400, thereby enabling the support portion 400 to support the fence portion 200 and limit the downward displacement of the fence portion 200 under the action of its own gravity, that is, limit the downward movement of the fence portion 200, thereby improving the support stability of the fence portion 200.

[0044] In an optional implementation of the present application, the fence further includes a support portion 400, one end of the support portion 400 is connected to the fence portion 200, and the other end of the support portion 400 is connected to the 3D printer, and the support portion 400 is used to limit the downward movement of the fence portion 200.

[0045] The descent of the fence portion 200 will cause an increase in the force exerted by the support portion 400 on the 3D printer. The force exerted by the 3D printer on the support portion 400 can be transmitted to the fence portion 200 through the support portion 400, thereby enabling the support portion 400 to support the fence portion 200 and limit the downward displacement of the fence portion 200 under the action of its own gravity, that is, limit the downward movement of the fence portion 200, thereby improving the support stability of the fence portion 200.

[0046] In an optional implementation of the present application, one end of the support portion 400 is connected to the bottom of the fence portion 200 , and when the fence portion 200 moves downward, the support portion 400 undergoes elastic deformation, and the elastic deformation provides an upward elastic force for the fence portion 200 .

[0047] One end of the support portion 400 is connected to the bottom of the fence portion 200. When the gravity of the fence portion 200 moves downward, the support portion 400 produces elastic deformation, generating an upward elastic force on the fence portion 200, which is balanced with the gravity of the fence portion 200. This increases the strength of the fence and will not be damaged even if the fence undergoes a large deformation.

[0048] Reference Figure 4 , shows a schematic diagram of a structure of a 3D printer in an embodiment of the present application. The 3D printer includes: a 3D printer print head, a drive device, a printing platform and the fence as described above (not shown in the figure), the 3D printer print head is arranged above the printing platform, and the drive device is used to drive the 3D printer print head to generate relative displacement with the printing platform.

[0049] The print head 1 of the 3D printer is arranged above the printing platform 3, and is used to extrude the printing material that is heated and melted into a molten state; the feeding device 4 provides the material line for the 3D printer print head 1, and the driving device 2 drives the 3D printer print head 1 to produce relative displacement between the printing platforms 3, so as to print or build a 3D model. The fence is connected to the 3D printer, and is used to protect the printing platform, avoid excessive movement of the printing platform, and prevent the user's limbs or foreign objects from entering the movement area of ​​the printing platform. Among them, all areas reached by the printing platform during the movement belong to the movement area of ​​the printing platform.

[0050] The print head 1 of the 3D printer includes a 3D printing hot end 11 and an extrusion assembly arranged between the feeding assembly and the 3D printing hot end 11. During the feeding process of the feeding device 4, the printing material enters the extrusion assembly, and the extrusion assembly provides the printing material to the 3D printing nozzle 11; during the feeding process of the feeding device 4, the 3D printer cuts off the printing material in the print head 1, and the extrusion assembly returns the printing material to the feeding device 4, and the loading and unloading assembly in the feeding device 4 rewinds the returned printing material to the material tray.

[0051] Optionally, the 3D printer may, for example, cut off the printing material between the extrusion component and the 3D printing hot end 11 or may cut off the printing material in the extrusion component, etc. The present application does not limit the position where the 3D printer cuts off the printing material.

[0052] Exemplarily, the 3D printer further includes a printing panel 31, a hot bed 32 and a base 33. The printing platform 3 may include a hot bed 32, and may further include a printing panel 31. The hot bed 32 is disposed on a side of the base 33 facing the 3D printing hot end 11, and the hot bed 32 has a heating function. The printing panel 31 is disposed on a side of the hot bed 32 facing the 3D printing hot end 11, and the heat of the hot bed 32 can be conducted to the printing panel 31, and the hot end 11 can extrude the molten printing material onto the printing panel 31.

[0053] In a specific implementation, the 3D printer can adjust the temperature of the heating block and the hot bed 32 corresponding to the 3D printing hot end 11, adjust the temperature of the heating block to heat the printing material to a molten state, and adjust the temperature of the hot bed 32 to adhere the printing material extruded by the hot end 11 to the printing panel 31. The print head 1 is slidably connected to the first guide rail 12, and the print head 1 can move along the length direction of the first guide rail 12, that is, the displacement of the print head 1 relative to the printing platform 3 along the length direction of the first guide rail 12 is realized, and the hot bed 32 is slidably connected to the second guide rail 13, and the hot bed 32 moves along the length direction of the second guide rail 13, that is, the displacement of the print head 1 relative to the printing platform 3 along the length direction of the second guide rail 13 is realized, and the length direction of the second guide rail 13 is perpendicular to the length direction of the first guide rail 13. Furthermore, the first guide rail 12 is slidably connected to the third guide rail 14 (the third guide rail 14 may include a screw rod), and the 3D printer can achieve displacement of the print head 1 relative to the printing platform 3 in a direction perpendicular to the length of the second guide rail 13 and in a direction perpendicular to the length of the first guide rail 12 by moving the first guide rail 12 along the third guide rail 14. That is, the 3D printer can achieve relative displacement between the print head 1 and the printing platform 3 in three mutually perpendicular directions, thereby printing a 3D object.

[0054] In an optional implementation of the application, the 3D printer includes a base 33, which is slidably connected to the printing platform, and the projection of the movement area of ​​the printing platform on the horizontal plane exceeds the projection of the base 33 on the horizontal plane in the sliding direction. The sliding direction is the direction in which the printing platform can slide relative to the base 33. The connecting portion 100 is detachably or fixedly connected to the base 33, and at least part of the boundary of the enclosed area includes both side boundaries or one side boundary of the enclosed area in the sliding direction.

[0055] The base 33 in the 3D printer can be slidably connected to the printing platform. The projection of the moving area of ​​the printing platform on the horizontal plane exceeds the projection of the base 33 on the horizontal plane in the sliding direction. The sliding direction is the direction in which the printing platform can slide relative to the base 33, that is, the sliding range of the printing platform on the base 33 can be greater than the range of the projection of the base 33 on the horizontal plane, so that there is a larger sliding range for printing. In this case, the protection of the fence is particularly needed. The fence part surrounds at least part of the printing platform 3, and the area surrounded by the fence part 200 can be the two side areas or one side area of ​​the moving area in the sliding direction, and the printing platform is protected by the semi-enclosed area, or the fence part 200 is projected on the horizontal plane to form at least part of the boundary of the enclosed area, and at least part of the boundary of the enclosed area includes the two side boundaries or one side boundary of the enclosed area in the sliding direction. Compared with the protection in the non-sliding direction, the protection in the sliding direction is more significant, which is beneficial to the 3D printer not occupying too much space. And the connecting part 100 is detachably connected to the base 33, so that the fence can be installed on the 3D printer according to needs.

[0056] In an optional implementation of the application, the connecting portion 100 is used to connect to a side surface of the base 33 , and the side surface of the base 33 is at least one side surface of the two side surfaces of the base 33 in the sliding direction.

[0057] The connecting portion 100 is connected to the side of the base 33, and the side of the base 33 is at least one of the two side surfaces of the base 33 in the sliding direction. By setting a fence on the side of the base 33, the sliding direction can be better protected, and the space of the base 33 can be reasonably utilized without affecting the original function of the base 33, so that it can be better applied to a 3D printer.

[0058] In an optional implementation of the application, the base 33 is provided with a memory card slot, and the memory card slot is located on a side of the base 33 connected to the connecting portion 100 .

[0059] A memory card slot is provided on the side where the base 33 is connected to the connecting part 100, and the memory card is used to be set in the memory card slot. By setting the memory card slot on the side of the base 33 connected to the connecting part 100, the memory card can be prevented from being hit by external force; and the fence part can prevent the user or other foreign objects from accidentally touching the memory card slot during printing (the fence can be removed after printing and then the memory card can be operated), thereby avoiding interruption of the printing process and improving the accuracy of printing.

[0060] In an optional implementation of the application, the base 33 is provided with a memory card slot, and the memory card slot is located in an area on one side of the movement area in the sliding direction.

[0061] The card slot is located on one side of the moving area in the sliding direction. If there is a fence in this area, the memory card can be protected from external force. The fence can prevent the user or other foreign objects from accidentally touching the memory card slot during printing (the fence can be removed after printing and then the memory card can be operated), thereby avoiding interruptions in the printing process and improving printing accuracy.

[0062] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as suggesting or implying relative importance or implicitly indicating the number or order of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "including", "comprising" and "having" and any of their variations are intended to cover non-exclusive inclusions. As used in the present application, the term "and / or" includes any and all combinations of one or more of the associated listed items, and the phrase "at least one of A and B" refers to only A, only B, or both A and B. It should be understood that in this specification, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "height", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships or dimensions that are based on the orientations or positional relationships or dimensions shown in the accompanying drawings, and these terms are used only for the convenience of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present disclosure.

[0063] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.

Claims

1. A fence for a 3D printer, characterized in that: include: A connecting part connected to the 3D printer; a fence portion connected to the connecting portion; The projection of the fence portion on the horizontal plane forms at least a partial boundary of the enclosed area, and the projection of the movement area of ​​the printing platform of the 3D printer on the horizontal plane is located within the enclosed area; the bottom height of the fence portion is less than the height of the bearing surface of the printing platform, the top height of the fence portion is greater than the height of the bearing surface of the printing platform, and the horizontal plane is parallel to the bearing surface.

2. The fence according to claim 1, characterized in that: The 3D printer includes a base, which is used to be slidably connected to the printing platform, the projection of the movement area of ​​the printing platform on the horizontal plane exceeds the projection of the base on the horizontal plane in the sliding direction, the sliding direction is the direction in which the printing platform can slide relative to the base, the connecting portion is detachably connected to the base, and at least part of the boundary of the enclosed area includes two side boundaries or one side boundary of the enclosed area in the sliding direction.

3. The fence according to claim 2, characterized in that: The connecting portion is used to be connected to a side surface of the base, and the side surface of the base is at least one side surface of two side surfaces of the base in the sliding direction.

4. The fence according to claim 2, characterized in that: The connecting portion includes a male buckle or a female buckle in a buckle structure, which is used for buckle connection with the base.

5. The fence according to any one of claims 2 to 4, characterized in that: The fence also includes a limiting portion, one end of the connecting portion is inserted into the socket on the side of the base, one end of the limiting portion is abutted against the abutment surface of the side, the abutment surface is located below the socket, and the other end of the limiting portion is connected to the bottom of the connecting portion to limit the connecting portion from bending downward.

6. The fence according to claim 5, characterized in that: The fence also includes a supporting portion, one end of which is connected to the fence portion, and the other end of which is connected to the limiting portion, and the supporting portion is used to limit the downward movement of the fence portion.

7. The fence according to any one of claims 1 to 4, characterized in that: The fence also includes a support portion, one end of which is connected to the fence portion, and the other end of which is connected to the 3D printer, and the support portion is used to limit the downward movement of the fence portion.

8. The fence according to claim 7, characterized in that: One end of the support portion is connected to the bottom of the fence portion. When the fence portion moves downward, the support portion undergoes elastic deformation, and the elastic deformation provides an upward elastic force for the fence portion.

9. A 3D printer, characterized in that: include: A 3D printer print head, a drive device, a printing platform and a fence as described in any one of claims 1 to 8, wherein the 3D printer print head is arranged above the printing platform, and the drive device is used to drive the relative displacement between the 3D printer print head and the printing platform.

10. The 3D printer according to claim 9, characterized in that: The 3D printer includes a base, which is slidably connected to the printing platform, the projection of the movement area of ​​the printing platform on the horizontal plane exceeds the projection of the base on the horizontal plane in the sliding direction, the sliding direction is the direction in which the printing platform can slide relative to the base, the connecting portion is detachably connected or fixedly connected to the base, and at least part of the boundary of the enclosed area includes two side boundaries or one side boundary of the enclosed area in the sliding direction.

11. The 3D printer according to claim 10, characterized in that: The connecting portion is used to be connected to a side surface of the base, and the side surface of the base is at least one side surface of two side surfaces of the base in the sliding direction.

12. The 3D printer according to claim 11, characterized in that: The base is provided with a memory card slot, and the memory card slot is located on a side of the base connected to the connecting portion.

13. The 3D printer according to any one of claims 10 to 12, characterized in that: The base is provided with a memory card slot, and the memory card slot is located in a side area of ​​the motion area in the sliding direction.