Hot bed lifting assembly and 3D printer

Abstract

The utility model relates to the technical field of 3D printing, in particular to a hot bed lifting assembly and a 3D printer. The hot bed lifting assembly is used for the 3D printer, the 3D printer further comprises a hot bed and a bottom plate, the hot bed lifting assembly comprises a mounting component, a lead screw and a moving component, the mounting component is used for being detachably connected to the bottom plate, the lead screw is connected with the mounting component, the moving component is used for being connected to the hot bed, and the lead screw rotates to drive the moving component to move in the height direction of the lead screw. The moving component and the mounting component are located on the two sides of the bottom plate correspondingly. According to the hot bed lifting assembly, the lead screw is detachably installed on the bottom plate through the installation component, the installation component can be directly detached from the bottom plate, the lead screw can be detached together with the installation component, then the lead screw can be detached, detachment and maintenance are convenient, detachment of the whole bottom plate is avoided, and the whole operation is simple and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of 3D printing, in particular to a hot bed lifting assembly and a 3D printer. BACKGROUND

[0002] 3D printing technology, also known as additive manufacturing technology, is a technology that uses a digital model file as a basis and uses a material that can be bonded to construct an object through layer-by-layer printing. 3D printing is usually realized by using a 3D printer. The 3D printer, also known as a three-dimensional printer or a stereoscopic printer, is a rapid prototyping process equipment.

[0003] The 3D printer usually includes a hot bed lifting assembly, and the hot bed lifting assembly includes a lead screw and an optical axis. The bottom of the lead screw and the bottom of the optical axis are inserted into the bottom plate of the chamber. The existing lead screw is integrally installed to the bottom plate. When repairing and replacing, the lead screw and the optical axis need to be disassembled by disassembling the top structure or the entire bottom structure such as the bottom plate, which is not conducive to repairing and replacing. CONTENT OF THE UTILITY MODEL

[0004] A series of simplified concepts are introduced in the application content part, which will be further described in detail in the specific embodiment part. The application content part of the present application does not mean to try to limit the key features and necessary technical features of the claimed technical solution, and even less means to try to determine the protection scope of the claimed technical solution.

[0005] According to one aspect of the present application, a hot bed lifting assembly is provided, which is used in a 3D printer, the 3D printer further includes a hot bed and a bottom plate, and the hot bed lifting assembly includes:

[0006] a mounting member for detachably connecting to the bottom plate;

[0007] a lead screw connected to the mounting member; and

[0008] a moving member for connecting to the hot bed, the lead screw rotates to drive the moving member to move along the height direction of the lead screw, and the moving member and the mounting member are respectively located on both sides of the bottom plate.

[0009] The hot bed lifting assembly according to the present application is used in a 3D printer, and the 3D printer further comprises a hot bed and a bottom plate. The hot bed lifting assembly comprises a mounting member, a lead screw and a moving member. The mounting member is used for detachably connecting to the bottom plate. The lead screw is connected to the mounting member. The moving member is used for connecting to the hot bed. The lead screw drives the moving member to move along the height direction of the lead screw in rotation. The moving member and the mounting member are respectively located on two sides of the bottom plate. In this way, the lead screw is detachably mounted to the bottom plate through the mounting member. The mounting member can be directly detached from the bottom plate. The lead screw can be detached together with the mounting member. Thus, the lead screw can be detached, which facilitates the detachment and maintenance, and avoids detaching the entire bottom plate. The entire operation is simple and convenient.

[0010] Optionally, the hot bed lifting assembly further comprises a rotary support located between the mounting member and the lead screw and used for supporting the rotary of the lead screw.

[0011] Optionally, the rotary support comprises a flange bearing. The mounting member is connected to the flange surface or the bearing outer ring of the flange bearing through a step. The bearing inner ring of the flange bearing is connected to the lead screw.

[0012] Optionally, the hot bed lifting assembly further comprises a limiting member sleeved to the lead screw. The limiting member abuts against the rotary support. The limiting member is located between the moving member and the rotary support.

[0013] Optionally, the hot bed lifting assembly further comprises a transmission wheel detachably connected to the lead screw. The mounting member forms an accommodation space. The transmission wheel is mounted in the accommodation space. The lead screw comprises a D-shaped surface. The transmission wheel is drivingly connected to the lead screw through the D-shaped surface.

[0014] Optionally, the transmission wheel comprises a main body and a protruding portion. The protruding portion protrudes from the main body towards the rotary support along the axial direction of the lead screw. The main body is spaced apart from the mounting member, and / or the protruding portion is located between the main body and the rotary support. The protruding portion abuts against the bearing inner ring of the rotary support. The side opposite to the protruding portion of the transmission wheel is provided with a fixing hole. The transmission wheel is mounted to the lead screw through the fixing hole.

[0015] Optionally, the hot bed lifting assembly further comprises an optical axis. The moving member comprises a hot bed connecting member and a linear bearing. The mounting member further comprises an accommodation groove used for accommodating the optical axis.

[0016] Optionally, the heated bed lifting assembly further includes a dustproof component and an elastic element, both of which are movably located in the receiving groove, and the linear bearing is capable of applying a force to the dustproof component to compress the elastic element.

[0017] Optionally, the lead screw and / or the optical axis are detachably connected to the base plate via the mounting member.

[0018] Optionally, the mounting component further includes an outer ring boss, which is flush with the rotary support or with the surface of the base plate facing the heated bed, or the outer ring boss protrudes from the surface of the base plate facing the heated bed.

[0019] According to another aspect of this application, a 3D printer is also provided, the 3D printer comprising a heated bed, a base plate and the aforementioned heated bed lifting assembly.

[0020] According to the 3D printer of this application, the 3D printer includes a heated bed, a base plate, and the aforementioned heated bed lifting assembly. The heated bed lifting assembly includes a mounting component, a lead screw, and a moving component. The mounting component is detachably connected to the base plate, the lead screw is connected to the mounting component, and the moving component is connected to the heated bed. Rotation of the lead screw causes the moving component to move along the height direction of the lead screw. The moving component and the mounting component are located on opposite sides of the base plate. In this way, the lead screw is detachably mounted to the base plate via the mounting component, and the mounting component can be directly removed from the base plate. The lead screw can be removed along with the mounting component, thus enabling disassembly and maintenance of the lead screw, avoiding the need to disassemble the entire base plate. The entire operation is simple and convenient. Attached Figure Description

[0021] The following figures are included as part of this application for understanding the application. The figures illustrate embodiments of the application and their descriptions, explaining the apparatus and principles of the application. In the figures,

[0022] Figure 1 This is a perspective view of a heated bed lifting assembly according to a preferred embodiment of this application;

[0023] Figure 2 for Figure 1 Another three-dimensional schematic diagram of the heated bed lifting assembly shown;

[0024] Figure 3 for Figure 1 A front view schematic diagram of the heated bed lifting assembly shown;

[0025] Figure 4 This is a cross-sectional schematic diagram of a heated bed lifting assembly according to a preferred embodiment of this application;

[0026] Figure 5 forFigure 4 A partial enlarged view of part A of the heated bed lifting assembly shown;

[0027] Figure 6 for Figure 1 A three-dimensional schematic diagram of the drive wheel of the heated bed lifting assembly shown;

[0028] Figure 7 for Figure 6 A schematic diagram of the cross-section of the transmission wheel shown;

[0029] Figure 8 for Figure 1 A three-dimensional schematic diagram of the mounting components of the heated bed lifting assembly shown;

[0030] Figure 9 for Figure 4 A schematic cross-sectional view of the mounting component is shown.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100: Heated Bed Lifting Component

[0033] 110: Installation components

[0034] 111: Storage space

[0035] 112: Outer ring protrusion

[0036] 113: Receiving tank

[0037] 114: Positioning Post

[0038] 115: Steps

[0039] 120: Lead screw

[0040] 140: Slewing support component

[0041] 141: Flange bearing

[0042] 142: Protrusion

[0043] 143: Bearing outer ring

[0044] 144: Inner ring of bearing

[0045] 150: Optical axis

[0046] 160: Limiting component

[0047] 170: Drive wheel

[0048] 171: Main Body

[0049] 172: Protrusion

[0050] 173: Fixing hole

[0051] 174: Shaft hole

[0052] 180: Connector

[0053] 200: Heated bed connector Detailed Implementation

[0054] The following description provides numerous specific details to offer a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described to avoid confusion with this application.

[0055] To fully understand this application, detailed portions will be set forth in the following description in order to illustrate it. Obviously, implementation of this application is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this application are described in detail below; however, other embodiments may exist besides these detailed descriptions, and should not be construed as being limited to the embodiments set forth herein.

[0056] It should be understood that the terminology used herein is intended only to describe particular embodiments and is not intended to limit the scope of this application. The singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. When the terms “comprising” and / or “including” are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof. The terms “upper,” “lower,” “front,” “rear,” “left,” “right,” and similar expressions used in this application are for illustrative purposes only and are not intended to be limiting.

[0057] The ordinal numbers such as "first" and "second" used in this application are merely identifiers and have no other meaning, such as a specific order. In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0058] The specific embodiments of this application will be described in more detail below with reference to the accompanying drawings, which illustrate representative embodiments of this application and are not intended to limit this application.

[0059] like Figures 1 to 3 As shown, this application provides a heated bed lifting assembly 100 for use in a 3D printer. The 3D printer utilizes FDM (Fused Deposition Modeling) technology for printing. The 3D printer includes a tool head and a heated bed, and the tool head is movable. When the tool head moves to a preset position, it heats and melts a filament of thermoplastic material, which is then extruded through the nozzle of the tool head, stacking layer by layer from bottom to top on the heated bed to build an object. The tool head includes an extrusion assembly and a hot end. The extrusion assembly conveys the printing material supplied to the 3D printer by the feeding device to the hot end. The hot end has a heating function, heating the printing material to a molten state and extruding the molten printing material onto the heated bed.

[0060] For example, the hot end includes heat sink fins, a nozzle, and a throat located between the heat sink fins and the nozzle. The printing material passes sequentially through the heat sink fins, the throat, and the nozzle. Specifically, the printing material is heated to a molten state at the nozzle, and the nozzle extrudes the molten printing material onto the heated bed.

[0061] The 3D printer also includes a base plate located at the bottom of the 3D printer. The base plate is located at the bottom of the 3D printer along its height. A heated bed lifting assembly 100 can be connected to the base plate. The length direction of the heated bed lifting assembly 100 is parallel to the height direction of the 3D printer. The length direction of the heated bed lifting assembly 100 is parallel to the Z-axis direction of the 3D printer. The heated bed lifting assembly 100 can penetrate through the base plate. The heated bed lifting assembly 100 extends along its length. In this embodiment, "heated bed lifting assembly 100" refers to a fixing and transmission mechanism in the 3D printer that moves along the height direction of the 3D printer.

[0062] The 3D printer also includes a chamber containing a tool head and a heated bed. A base plate is also provided within the chamber, located at the bottom of the chamber. The base plate is positioned below the heated bed. The base plate is positioned below the heated bed along the height direction of the adjustment assembly. The 3D printer also includes a heated bed connector 200 connected to the heated bed. The heated bed connector 200 connects the heated bed lifting assembly 100 and the heated bed, allowing the heated bed to move along the height direction of the heated bed lifting assembly 100. One end of the heated bed connector 200 is connected to the heated bed lifting assembly 100. Preferably, the heated bed connector 200 is located below the heated bed. The heated bed connector 200 is positioned below the heated bed along the height direction of the 3D printer. The other end of the heated bed connector 200 is connected to the bottom surface of the heated bed. In this embodiment, the "bottom surface of the heated bed" refers to the surface of the heated bed facing the base plate. The tool head is movable along the length direction of the moving component to achieve material stacking. As the nozzle moves along the printing path, it extrudes molten printing material layer by layer onto different locations on the heated bed, thus printing a three-dimensional object.

[0063] Specifically, such as Figure 1 As shown, the heated bed lifting assembly 100 includes a mounting member 110 located at one end of the heated bed lifting assembly 100. The mounting member 110 is located below the base plate. The mounting member 110 is located outside the base plate. The mounting member 110 protrudes outside the base plate. The bottom end of the heated bed lifting assembly 100 passes through the base plate and is connected to the mounting member 110. The thickness direction of the base plate is parallel to the length direction of the heated bed lifting assembly 100. The mounting member 110 is used for detachable connection to the base plate. The mounting member 110 is exposed outside the base plate to allow for removal. The mounting member 110 can be directly removed by tapping downwards with a disassembly tool.

[0064] The heated bed lifting assembly 100 also includes a lead screw 120 and a moving component, with the lead screw 120 connected to the moving component. The moving component is located outside the lead screw 120. The lead screw 120 can drive the moving component to move. Rotation of the lead screw 120 can drive the moving component to move linearly. The axial direction of the lead screw 120 is parallel to the axial direction of the moving component. The axial direction of the lead screw 120 is parallel to the height direction of the 3D printer. The moving component includes a lead screw nut. The lead screw nut is sleeved on the lead screw 120. Rotation of the lead screw 120 can cause the lead screw nut to move along the length direction of the lead screw 120. The way the lead screw 120 drives the lead screw nut to move in this application is similar to the existing way the lead screw 120 drives the lead screw nut, and will not be described in detail in this embodiment.

[0065] A movable component is used to connect to the heated bed. The movable component is connected to the heated bed. The movable component can adjust the position of the heated bed along the height direction of the 3D printer. Optionally, the movable component is connected to the heated bed connector 200. The heated bed is connected to the movable component via the heated bed connector 200. Rotation of the lead screw 120 causes the movable component to move along the height direction of the lead screw 120. The height direction of the lead screw 120 is parallel to the height direction of the 3D printer. The movement of the movable component can cause the heated bed to move via the heated bed connector 200.

[0066] The lead screw 120 is connected to the mounting member 110. The bottom end of the lead screw 120 is connected to the mounting member 110. The height direction of the lead screw 120 is parallel to the length direction of the heated bed lifting assembly 100. The length direction of the heated bed lifting assembly 100 is parallel to the thickness direction of the base plate. The lead screw 120 passes through the base plate and is connected to the mounting member 110. The lead screw 120 is detachably connected to the base plate via the mounting member 110. The lead screw 120 passes through the base plate and is connected to the mounting member 110. The moving member and the mounting member 110 are located on opposite sides of the base plate. The moving member and the mounting member 110 are located on opposite sides of the base plate along the height direction of the lead screw 120.

[0067] Mounting component 110 is located outside the base plate. Operators can directly disassemble mounting component 110, exposing the disassembly area. Mounting component 110 can be directly removed from the base plate, and lead screw 120 can be removed along with mounting component 110, thus enabling the disassembly of lead screw 120. In this way, lead screw 120 can be removed from the base plate via mounting component 110, avoiding the need for complete disassembly of the base plate and lead screw 120.

[0068] According to the heated bed lifting assembly 100 of this application, the heated bed lifting assembly 100 is used in a 3D printer. The 3D printer also includes a heated bed and a base plate. The heated bed lifting assembly 100 includes a mounting component 110, a lead screw 120, and a moving component. The mounting component 110 is detachably connected to the base plate. The lead screw 120 is connected to the mounting component 110. The moving component is connected to the heated bed. Rotation of the lead screw 120 drives the moving component to move along the height direction of the lead screw 120. The moving component and the mounting component 110 are located on opposite sides of the base plate. In this way, the lead screw 120 is detachably mounted to the base plate via the mounting component 110. The mounting component 110 can be directly removed from the base plate, and the lead screw 120 can be removed together with the mounting component 110. This allows for the removal of the lead screw 120, facilitating disassembly and maintenance, avoiding the need to disassemble the entire base plate, and making the entire operation simple and convenient.

[0069] like Figure 4 and Figure 5As shown, the heated bed lifting assembly 100 also includes a rotary support 140, located between the mounting member 110 and the lead screw 120, for supporting the rotation of the lead screw 120. The rotary support 140 has a generally annular structure. The rotary support 140 is fitted onto the outside of the lead screw 120. The mounting member 110 is fitted onto the outside of the rotary support 140. The lead screw 120 is connected to the mounting member 110 via the rotary support 140. The rotary support 140 is constructed as a bearing. The rotary support 140 is used to support the rotation of the lead screw 120.

[0070] The axial direction of the slewing support 140 is parallel to the axial direction of the mounting member 110. The lead screw 120, the slewing support 140, and the mounting member 110 can be coaxially connected. The mounting member 110 and the slewing support 140 are detachably connected together. The slewing support 140 is also detachably connected to the lead screw 120. The mounting member 110 and the slewing support 140 are detachably connected together. The slewing support 140 can also be separated from the lead screw 120.

[0071] Furthermore, such as Figure 7 As shown, the slewing support 140 includes a flange bearing 141, located between the lead screw 120 and the mounting member 110. The lead screw 120 is connected to the mounting member 110 via the flange bearing 141. The axial direction of the lead screw 120 is parallel to the axial direction of the flange bearing 141. The flange bearing 141 includes an outer ring 143 and an inner ring 144, which rotate relative to each other. Optionally, the flange bearing 141 further includes a rolling member located between the outer ring 143 and the inner ring 144. The inner ring 144 is located inside the flange bearing 141 along its radial direction. The inner ring 144 is connected to the lead screw 120. Rotation of the lead screw 120 can drive the inner ring 144 of the flange bearing 141 to rotate.

[0072] The outer ring 143 of the bearing is located outside the flange bearing 141 along the radial direction. A rolling member can roll between the inner ring 144 and the outer ring 143. The rolling member allows the inner ring 144 to rotate relative to the outer ring 143. The outer ring 143 engages with the mounting member 110. The mounting member 110 includes a mounting hole in which a slewing support 140 is disposed. The axial direction of the mounting hole is parallel to the axial direction of the lead screw 120. The mounting hole engages with the slewing support 140. The mounting hole engages with the outer ring of the slewing support 140. The inner ring of the slewing support 140 rotates in the mounting hole. The lead screw 120 rotates in the mounting hole. The mounting member 110 is connected to the lead screw 120 via the slewing support 140. The lead screw 120 rotates within the flange bearing 141. The inner ring 144 of the flange bearing 141 is connected to the lead screw 120. The flange bearing 141 is sleeved on the outside of the lead screw 120. Thus, the slewing support 140 can achieve the elimination of backlash by fixing the lead screw 120 and the bearing.

[0073] like Figure 5 and Figure 9 As shown, the mounting component 110 includes an outer ring boss 112, which is located outside the outer ring 143 of the bearing. (This is in conjunction with...) Figure 7 As shown, the slewing support 140 also includes a protrusion 142 that protrudes towards the mounting member 110 along the radial direction of the lead screw 120. The protrusion 142 protrudes from the outer ring 143 of the bearing towards the mounting member 110 along the radial direction of the lead screw 120. The protrusion 142 is located to the side of the outer ring boss 112 along the radial direction of the lead screw 120. The protrusion 142 includes a flange face facing the mounting member 110. The mounting member 110 includes a step 115 located below the outer ring boss 112. The mounting member 110 is connected to the flange face of the flange bearing 141 via the step 115. The mounting member 110 is connected to the outer ring 143 of the bearing via the step 115. The flange face abuts against the step 115 of the mounting member 110. Thus, the mounting member 110 can position and support the slewing support 140.

[0074] Optionally, the outer ring boss 112 is flush with the rotary support member 140 or with the surface of the base plate facing the heated bed along the axial direction of the lead screw 120. The upper surface of the outer ring boss 112 along the axial direction of the lead screw 120 is flush with the upper surface of the rotary support member 140 or with the surface of the base plate facing the heated bed. In this embodiment, "upper surface of the outer ring boss 112" refers to the surface of the outer ring boss 112 facing the heated bed, and "upper surface of the rotary support member 140" refers to the surface of the rotary support member 140 facing the heated bed. The outer ring boss 112 protrudes beyond the surface of the base plate facing the heated bed along the axial direction of the lead screw 120. The outer ring boss 112 is higher than the surface of the base plate facing the heated bed along the axial direction of the lead screw 120. The rotary support member 140 protrudes beyond the surface of the base plate facing the heated bed along the axial direction of the lead screw 120. The slewing support 140 is positioned axially above the surface of the base plate facing the heated bed. This allows the mounting components and the heated bed lifting assembly 100 to be knocked out of the 3D printer's chamber.

[0075] To prevent the rotary support 140 from disengaging, the heated bed lifting assembly 100 also includes a limiting member 160, which is sleeved onto the lead screw 120. The limiting member 160 is sleeved onto the outside of the lead screw 120. The limiting member 160 is constructed as a retaining ring. The limiting member 160 is connected to the lead screw 120. The limiting member 160 is located between the moving member and the rotary support 140. The limiting member 160 abuts against the rotary support 140. The retaining ring is engaged above the rotary support 140. The retaining ring restricts the movement of the moving member toward the rotary support 140. The moving member moves away from the rotary support 140.

[0076] The heated bed lifting assembly 100 also includes a drive wheel 170, which can be connected to the lead screw 120. Rotation of the drive wheel 170 drives the lead screw 120 to rotate. The drive wheel 170 is configured as a synchronous belt pulley. The drive wheel 170 can be located below the mounting member 110 along the axial direction of the lead screw 120. The axial direction of the drive wheel 170 is parallel to the axial direction of the lead screw 120.

[0077] The drive wheel 170 is detachably connected to the lead screw 120. The drive wheel 170 can be separated from the lead screw 120. The axial direction of the drive wheel 170 is parallel to the height direction of the lead screw 120. Thus, the drive wheel 170 can be disassembled together with the lead screw 120, or the drive wheel 170 can be disassembled separately.

[0078] The transmission wheel 170 is connected to the bottom end of the lead screw 120 along its axial direction. Rotation of the transmission wheel 170 drives the lead screw 120 to rotate. The transmission wheel 170 includes a shaft hole 174, in which the lead screw 120 is disposed. The lead screw 120 passes through the shaft hole 174. The lead screw 120 includes a D-shaped surface that abuts against the transmission wheel 170. The transmission wheel 170 and the lead screw 120 are connected via the D-shaped surface. The D-shaped surface abuts against the shaft hole 174 of the transmission wheel 170. The transmission wheel 170 drives the lead screw 120 to rotate. The rotation of the transmission wheel 170 applies a rotational force to the D-shaped surface, thereby causing the lead screw 120 to rotate.

[0079] The transmission wheel 170 includes a main body 171 and a protrusion 172, which are connected. In a preferred embodiment, the protrusion 172 is located above the main body 171. The protrusion 172 is closer to the rotary support 140 than the main body 171. The protrusion 172 protrudes from the main body 171 toward the rotary support 140. The protrusion 172 protrudes from the main body 171 toward the rotary support 140 along the axial direction of the lead screw 120. The axial direction of the protrusion 172 is parallel to the axial direction of the lead screw 120. The protrusion 172 can be sleeved on the outside of the lead screw 120 along its radial direction.

[0080] like Figure 5 and Figure 9 As shown, the mounting member 110 forms a receiving space 111, within which the drive wheel 170 is mounted. The drive wheel 170 is located below the mounting member 110 via the receiving space 111. The drive wheel 170 is located on the outside of the mounting member 110. The drive wheel 170 is located outside the mounting member 110 along the axial direction of the lead screw 120. Both the drive wheel 170 and the mounting member 110 are located on the outside of the base plate. The outer surface of the drive wheel 170 along its radial direction does not contact the mounting member 110. The mounting member 110 does not interfere with the rotation of the drive wheel 170.

[0081] The protrusion 172 is located between the main body 171 and the mounting member 110. The protrusion 172 is located between the main body 171 and the mounting member 110 along the axial direction of the lead screw 120. The drive wheel 170 is located below the rotary support member 140 along the axial direction of the drive wheel 170. The protrusion 172 is located between the main body 171 and the rotary support member 140 along the axial direction of the lead screw 120. The protrusion 172 can also abut against the rotary support member 140.

[0082] The protrusion 172 abuts against the slewing support 140. The protrusion 172 is located below the slewing support 140 along its axial direction. The protrusion 172 is situated between the main body 171 and the slewing support 140. The main body 171 and the mounting member 110 are spaced apart. The main body 171 and the slewing support 140 are also spaced apart. This facilitates disassembly.

[0083] Preferably, the protrusion 172 abuts against the inner ring 144 of the bearing of the slewing support 140. The protrusion 172 abuts against the slewing support 140 via the inner ring 144 of the flange bearing 141. The protrusion 172 abuts against the inner ring 144 of the flange bearing 141. The protrusion 172 and the inner ring 144 of the flange bearing 141 rotate synchronously. The protrusion 172 spacees the main body 171 from the base plate. The protrusion 172 spacees the main body 171 from the mounting member 110. The main body 171 is raised by the protrusion 172, providing a disassembly space between the main body 171 and the base plate, exposing a disassembly position for easy disassembly.

[0084] Combination Figure 6 As shown, the bottom of the transmission wheel 170 includes a fixing hole 173, through which the transmission wheel 170 is mounted to the lead screw 120. The fixing hole 173 is located on the side of the transmission wheel 170 opposite to the protrusion 172. The fixing hole 173 is connected to the lead screw 120. In this way, the rotation of the transmission wheel 170 can drive the lead screw 120 to rotate. A connecting hole is provided at the bottom end of the lead screw 120. The connecting hole extends along the height direction of the lead screw 120. The axial direction of the connecting hole is parallel to the axial direction of the lead screw 120. The opening direction of the connecting hole faces the bottom of the lead screw 120.

[0085] The heated bed lifting assembly 100 also includes a connector 180, which connects the lead screw 120 and the drive wheel 170. The connector 180 is detachably connected to the lead screw 120. The axial direction of the connector 180 is parallel to the axial direction of the fixing hole 173. The connector 180 can be connected to the connecting hole. The connector 180 can be connected to the lead screw 120 through the connecting hole. The connector 180 passes through the fixing hole 173 to connect to the lead screw 120. The connector 180 can be constructed as a screw. The connector 180 includes external threads, and the connecting hole includes internal threads; the connector 180 and the connecting hole are connected by a threaded connection. The connector 180 also abuts against the drive wheel 170. The inner surface of the connector 180 abuts against the outer surface of the drive wheel 170 to prevent the drive wheel 170 from disengaging.

[0086] The lead screw 120, limiting member 160, transmission wheel 170, and connecting member 180 are locked together, achieving integration. In particular, the timing pulley, lead screw 120, retaining ring, and locking screw feature a backlash-free structure for locking the travel. The transmission wheel 170 protrudes from the bottom of the mounting member 110 along the height direction of the lead screw 120. The elevated design of the transmission wheel 170 facilitates disassembly. During disassembly, the connecting member 180 is first removed; the elevated design of the transmission wheel 170 allows disassembly tools to be inserted to separate the transmission wheel 170 from the lead screw 120. For example, during disassembly, the screw is first removed; the elevated design of the timing pulley allows disassembly tools to be inserted to separate the timing pulley from the lead screw 120.

[0087] like Figure 5 As shown, the mounting component 110 also includes a positioning post 114 for positioning the mounting component 110. The positioning post 114 passes through the base plate along the axial direction of the lead screw 120. The base plate includes a positioning hole that penetrates the base plate. The axial direction of the positioning hole is parallel to the height direction of the lead screw 120. The positioning post 114 protrudes along the height direction of the lead screw 120. The positioning post 114 protrudes towards the base plate along the height direction of the lead screw 120. The positioning hole is used to connect with the positioning post 114. The positioning post 114 is inserted into the positioning hole. The mounting component 110 is positioned with the base plate by the positioning post 114. The mounting component 110 is detachably connected to the base plate. The positioning post 114 is detachably connected to the positioning hole. The mounting component 110 can be disassembled by striking the positioning post 114 with a tool. This allows the mounting component 110 to be removed from the base plate.

[0088] like Figures 1 to 5 As shown, the heated bed lifting assembly 100 also includes an optical axis 150. The optical axis 150 is arranged parallel to the lead screw 120. The axial direction of the optical axis 150 is parallel to the axial direction of the lead screw 120. The optical axis 150 is detachably connected to the base plate via a mounting member 110. Preferably, the optical axis 150 is included to guide the movement of the heated bed connector 200 along the height direction of the 3D printer. Figure 8 As shown, the mounting member 110 also includes a receiving groove 113. The receiving groove 113 is located at the bottom of the mounting member 110 along its length. The opening of the receiving groove 113 faces the optical axis 150. The receiving groove 113 is used to receive the optical axis 150. The receiving groove 113 is connected to the optical axis 150. The bottom end of the optical axis 150 is connected to the mounting member 110. The bottom end of the optical axis 150 passes through the base plate and enters the receiving groove 113.

[0089] The moving component also includes a heated bed connector 200 and a linear bearing, which is mounted on the optical axis 150. The linear bearing is connected to the heated bed connector 200. The optical axis 150 is equipped with a linear bearing, which is connected to the heated bed connector 200. The linear bearing is movable along the height direction of the optical axis 150. The linear bearing guides the heated bed connector 200 as it moves along the height direction of the optical axis 150.

[0090] The heated bed lifting assembly 100 also includes a dustproof component and an elastic element, both of which are movably located in a receiving groove 113. The dustproof component moves in the receiving groove 113 along the height direction of the optical axis 150. The elastic element moves in the receiving groove 113 along the height direction of the optical axis 150. The dustproof component can contact a linear bearing. The linear bearing applies a force to the dustproof component. When the heated bed is in its lowest limit position, the dustproof component abuts against the linear bearing. The linear bearing can apply a force to the dustproof component to compress the elastic element. Under the force of the linear bearing, the elastic element undergoes elastic deformation in the receiving groove 113. The compressed elastic element can also apply an elastic force to the dustproof component to reset the dustproof component, thereby resetting the linear bearing.

[0091] The heated bed lifting assembly 100 of this application mounts both the lead screw 120 and the drive wheel 170 to the mounting member 110. This allows for disassembly by removing the mounting member 110, thereby enabling the removal of the lead screw 120 and / or the drive wheel 170. The mounting member 110 can be detached from the base plate. The lead screw 120 and / or the drive wheel 170 can also be detached from the base plate. This simple and convenient operation allows for easy removal of the lead screw 120 and the optical shaft 150.

[0092] This application also provides a 3D printer, which includes a heated bed, a base plate, and the aforementioned heated bed lifting assembly 100.

[0093] According to the 3D printer of this application, the 3D printer includes a heated bed, a base plate, and the aforementioned heated bed lifting assembly 100. The heated bed lifting assembly 100 includes a mounting member 110, a lead screw 120, and a moving member. The mounting member 110 is detachably connected to the base plate, the lead screw 120 is connected to the mounting member 110, and the moving member is connected to the heated bed. Rotation of the lead screw 120 causes the moving member to move along the height direction of the lead screw 120. The moving member and the mounting member 110 are located on opposite sides of the base plate. In this way, the lead screw 120 is detachably mounted to the base plate via the mounting member 110, and the mounting member 110 can be directly removed from the base plate. The lead screw 120 can be removed together with the mounting member 110, thereby enabling the lead screw 120 to be disassembled, facilitating disassembly and maintenance, avoiding the need to disassemble the entire base plate, and making the entire operation simple and convenient.

[0094] The base plate is detachably connected to the heated bed lifting assembly 100. The 3D printer includes at least two heated bed lifting assemblies 100, which are spaced apart. Both heated bed lifting assemblies 100 are detachably connected to the base plate. Each lead screw 120 in the at least two heated bed lifting assemblies 100 is detachably connected to the base plate via a mounting member 110.

[0095] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of this application. Terms such as “part” or “component” appearing herein can refer to a single part or a combination of multiple parts. Terms such as “installation” or “installation” appearing herein can refer to one component being directly attached to another component or one component being attached to another component via an intermediary. A feature described in one embodiment herein may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0096] This application has been described through the above embodiments; however, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this application to the described embodiments. Furthermore, those skilled in the art will understand that this application is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this application, all of which fall within the scope of protection claimed in this application. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A heated bed lifting assembly for use in a 3D printer, the 3D printer further comprising a heated bed and a base plate, characterized in that, The heated bed lifting assembly includes: Mounting components for detachable connection to the base plate; A lead screw, which is connected to the mounting member; and A movable component is provided for connection to the heated bed. The rotation of the lead screw drives the movable component to move along the height direction of the lead screw. The movable component and the mounting component are located on opposite sides of the base plate.

2. The heated bed lifting assembly according to claim 1, characterized in that, The heated bed lifting assembly also includes a rotary support member, which is located between the mounting component and the lead screw and is used to support the rotation of the lead screw.

3. The heated bed lifting assembly according to claim 2, characterized in that, The slewing support includes a flange bearing, and the mounting component is connected to the flange face or outer ring of the flange bearing via a step. The inner ring of the flange bearing is connected to the lead screw.

4. The heated bed lifting assembly according to claim 2, characterized in that, The heated bed lifting assembly also includes a limiting member, which is sleeved onto the lead screw and abuts against the rotary support. The limiting member is located between the moving member and the rotary support.

5. The heated bed lifting assembly according to claim 2, characterized in that, The heated bed lifting assembly also includes a drive wheel, which is detachably connected to the lead screw. The mounting member forms an accommodating space, in which the drive wheel is installed. The lead screw includes a D-shaped surface, and the drive wheel and the lead screw are connected via the D-shaped surface.

6. The heated bed lifting assembly according to claim 5, characterized in that, The transmission wheel includes a body and a protrusion. The protrusion protrudes from the body toward the rotary support along the axial direction of the lead screw. The body and the mounting member are spaced apart, and / or the protrusion is located between the body and the rotary support. The protrusion abuts against the inner ring of the bearing of the rotary support member. A fixing hole is provided on the side of the transmission wheel opposite to the protrusion, and the transmission wheel is installed on the lead screw through the fixing hole.

7. The heated bed lifting assembly according to claim 1, characterized in that, The heated bed lifting assembly also includes an optical axis, the moving component includes a heated bed connector and a linear bearing, and the mounting component also includes a receiving groove for accommodating the optical axis.

8. The heated bed lifting assembly according to claim 7, characterized in that, The heated bed lifting assembly also includes a dustproof component and an elastic element, both of which are movably located in the receiving groove. The linear bearing can apply a force to the dustproof component to compress the elastic element.

9. The heated bed lifting assembly according to claim 7, characterized in that, The lead screw and / or the optical axis are detachably connected to the base plate via the mounting member.

10. The heated bed lifting assembly according to claim 2, characterized in that, The mounting component further includes an outer ring boss, which is flush with the rotary support or with the surface of the base plate facing the heated bed, or the outer ring boss protrudes from the surface of the base plate facing the heated bed.

11. A 3D printer, characterized in that, The 3D printer includes a heated bed, a base plate, and a heated bed lifting assembly according to any one of claims 1-10.

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