Hot bed leveling and supporting structure and 3D printer

Abstract

The utility model discloses a hot bed leveling supporting structure which comprises a base, a heating plate, a rotary connecting assembly and a fixed connecting assembly, the rotary connecting assembly and the fixed connecting assembly are connected with the base and the heating plate, and the heating plate can rotate around the rotary connecting assembly in the horizontal direction. By arranging the rotary connecting assembly and the fixed connecting assembly, the heating plate can rotate around the rotary connecting assembly, the distance between the heating plate and the base is kept unchanged, the positions of the heating plate and the base are fixed through the fixed connecting assembly, and leveling of the heating plate is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of 3D printing, and particularly relates to a hot bed leveling support structure and a 3D printer. Background Art

[0002] An FDM (Fused Deposition Modeling) 3D printer melts the printing consumables by heating the print head at a high temperature and deposits them on the printing platform. When the melted printing consumables contact the printing platform, they quickly solidify due to cooling. The print head deposits the printing consumables layer by layer on the printing platform along the set printing path, thereby constructing a model with a three-dimensional structure.

[0003] In the prior art, the heating plate is generally connected to the base by multiple elastic components, or by one rigid connection component and several elastic components. The distance and parallelism between the heating plate and the base are adjusted by adjusting the elastic components. If the heating plate and the base are connected by multiple elastic components, it is difficult for the user to master the distance between the heating plate and the base during adjustment. If one of the elastic components is changed to a rigid connection, such as replacing a spring with a bushing, when adjusting the remaining elastic components, the heating plate will be subjected to a torsional force, causing internal stress in the heating plate and even deforming the heating plate severely. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a hot bed leveling support structure. By setting a rotating connection component and a fixed connection component, the heating plate can rotate around the rotating connection component and keep the distance between the heating plate and the base unchanged. Then, the positions of the heating plate and the base are fixed through the fixed connection component, realizing the leveling of the heating plate.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A hot bed leveling support structure includes a base, a heating plate, a rotating connection component, and a fixed connection component. The rotating connection component and the fixed connection component connect the base and the heating plate, and the heating plate can rotate horizontally around the rotating connection component.

[0007] The heating plate rotates through the rotating connection component to keep the distance between the heating plate and the base unchanged, and the fixed connection component adjusts and fixes the positions of the heating plate and the base.

[0008] Further, the rotating connection component includes a first bolt, a bearing, and a threaded sleeve. The first bolt penetrates through the bearing, and at least part of the bearing and the first bolt are installed in the threaded sleeve. The first bolt extends upward and is threadedly fixed to the heating plate, and the threaded sleeve is located between the base and the heating plate.

[0009] The rotating connection component fixes the heating plate through the first bolt, enabling the heating plate to rotate around the first bolt under the action of the bearing, and the threaded sleeve is used to fix the position of the bolt.

[0010] Furthermore, the threaded sleeve includes an upper threaded sleeve and a lower threaded sleeve, and the upper threaded sleeve and the lower threaded sleeve are fixed by threading.

[0011] The arrangement of the upper threaded sleeve and the lower threaded sleeve facilitates installation.

[0012] Furthermore, the rotating connection assembly further includes a second bolt, and the second bolt passes through the bottom plate of the base and is threadedly fixed to the lower threaded sleeve.

[0013] The second bolt is used to fix the position of the rotating connection assembly and the base.

[0014] Furthermore, the rotating connection assembly further includes a gasket, and a gasket is sleeved between the bearing and the heating plate.

[0015] The gasket is used to protect the bearing from deformation.

[0016] Furthermore, the bearing is a fish-eye bearing, and the fish-eye bearing includes a fish-eye bearing inner ring and a fish-eye bearing outer ring. The fish-eye bearing outer ring is installed in the upper threaded sleeve and is limited and clamped by the lower threaded sleeve.

[0017] The fish-eye bearing inner ring is used to realize the rotation of the heating plate, and the fish-eye bearing outer ring is used to fix the position of the fish-eye bearing.

[0018] Furthermore, the fixed connection assembly includes a third bolt, a spring and a hand-tightening nut. The third bolt passes through the base and the heating plate. The spring is wound around the third bolt, and the two ends of the spring are respectively abutted against the base and the heating plate. The hand-tightening nut is threadedly fixed to the third bolt, and the hand-tightening nut is located outside the base and abuts against the base.

[0019] By tightening the hand-tightening nut, the distance between the base and the heating plate is adjusted, thereby realizing the leveling of the heating plate.

[0020] A 3D printer includes the hot bed leveling support structure described above.

[0021] Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0022] The heating plate rotates through the rotating connection assembly, and the distance between the heating plate and the base remains unchanged. When the user needs to adjust the parallelism of the heating plate, the central axis of the rotating connection assembly is used as a reference, the nozzle is moved to the other fixed connection assemblies, the fixed connection assemblies are installed and the hand-tightening nuts are adjusted, and the height of the heating plate is aligned with the nozzle to realize the leveling of the heating plate without damaging the heating plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present utility model will be further described below with reference to the drawings.

[0024] Figure 1 It is an exploded view of the hot bed leveling support structure.

[0025] Figure 2 It is a schematic structural diagram of a rotating connection assembly.

[0026] Figure 3 It is a schematic structural diagram of a fixed connection assembly.

[0027] Figure 4 It is a sectional view of the hot bed leveling support structure.

[0028] Figure 5 It is Figure 4 The enlarged schematic diagram at position A in

[0029] Figure 6 It is Figure 4 The enlarged schematic diagram at position B in Specific implementation mode

[0030] As Figure 1 shown, the hot bed leveling support structure includes a base 1, a heating plate 2, a rotating connection assembly 3 and three fixed connection assemblies 4. The heating plate 2 is arranged above the base 1, and the panel 8 is placed above the heating plate 2. The heat of the heating plate 2 is transferred to the panel 8 through heat conduction. Among them, the rotating connection assembly 3 and the fixed connection assembly 4 are respectively installed at the four corners of the base 1 and the heating plate 2.

[0031] As Figure 2 shown, the rotating connection assembly 3 includes a gasket 31, a first bolt 32, a spherical bearing, a threaded sleeve and a second bolt 33. As Figure 4 and Figure 5 shown, the threaded sleeve includes an upper threaded sleeve 34 and a lower threaded sleeve 35, and the upper threaded sleeve 34 and the lower threaded sleeve 35 are fixed by threading. The bearing is a spherical bearing, and the spherical bearing includes a spherical bearing inner ring 36 and a spherical bearing outer ring 37. The spherical bearing outer ring 37 is installed in the upper threaded sleeve 34 and is limited and clamped by the lower threaded sleeve 35. The first bolt 32 penetrates through the spherical bearing, and the spherical bearing and the first bolt 32 are installed in the upper threaded sleeve 34. The first bolt 32 extends upward and is thread-fixed to the heating plate 2. The threaded sleeve is located between the base 1 and the heating plate 2. The second bolt 33 penetrates through the bottom plate of the base 1 and is thread-fixed to the lower threaded sleeve 35. A gasket 31 is provided at the top of the spherical bearing, and the gasket 31 abuts against the bottom surface of the heating plate 2.

[0032] As Figure 3 and Figure 6 shown, the fixed connection assembly 4 includes a third bolt 41, a spring 42 and a hand-tightening nut 43. The third bolt 41 penetrates through the base 1 and the heating plate 2. The spring 42 is wound around the third bolt 41, and the two ends of the spring 42 respectively abut against the bottom plate of the base 1 and the heating plate 2. The hand-tightening nut 43 is located outside the base 1 and is thread-fixed to the third bolt 41. The hand-tightening nut 43 abuts against the base 1.

[0033] During installation, pass the first bolt 32 through the spherical bearing, install the spherical bearing into the upper threaded sleeve 34, let the first bolt 32 extend out from the upper threaded sleeve 34, place the gasket 31 on the first threaded sleeve and rotate the first thread to fix it on the mounting hole 5 of the heating plate 2. Screw the lower threaded sleeve 35 tightly with the upper threaded sleeve 34, place the heating plate 2 on the base 1, and pass the second bolt 33 through the bottom plate of the base 1 and fix it to the lower threaded sleeve 35.

[0034] Pass the third bolt 41 through the mounting hole 6 of the heating plate 2, put the spring 42 onto the third bolt 41, move the heating plate 2 to align the third bolt 41 with the mounting hole 7 of the base 1, install the spring 42 between the heating plate 2 and the base 1, and tighten the hand-tightening nut 43 at the tail of the third bolt 41 against the bottom of the base 1.

[0035] During leveling, take the central axis of the rotating connection assembly 3, i.e., the central axis of the first bolt 32, as the reference, move the nozzle (not shown in the figure) to the other fixed connection assemblies 4, and adjust the hand-tightening nut 43 to align the height of the heating plate 2 with the nozzle, so as to achieve the leveling of the heating plate 2.

[0036] The above are only specific embodiments of the present utility model, but the technical features of the present utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present utility model to solve basically the same technical problems and achieve basically the same technical effects are all covered by the protection scope of the present utility model.

Claims

1. Hot bed leveling support structure, characterized in that: It includes a base, a heating plate, a rotating connection assembly and a fixed connection assembly. The rotating connection assembly and the fixed connection assembly connect the base and the heating plate, and the heating plate can rotate horizontally around the rotating connection assembly.

2. The hot bed leveling support structure according to claim 1, characterized in that: The rotating connection assembly includes a first bolt, a bearing and a threaded sleeve. The first bolt penetrates through the bearing, and at least part of the bearing and the first bolt are installed in the threaded sleeve. The first bolt extends upward and is threadedly fixed to the heating plate, and the threaded sleeve is located between the base and the heating plate.

3. The hot bed leveling support structure according to claim 2, characterized in that: The threaded sleeve includes an upper threaded sleeve and a lower threaded sleeve, and the upper threaded sleeve and the lower threaded sleeve are threadedly fixed.

4. The hot bed leveling support structure according to claim 3, characterized in that: The rotating connection assembly further includes a second bolt, and the second bolt penetrates through the bottom plate of the base and is threadedly fixed to the lower threaded sleeve.

5. The hot bed leveling support structure according to claim 3, characterized in that: The rotating connection assembly further includes a gasket, and the gasket is sleeved between the bearing and the heating plate.

6. The hot bed leveling support structure according to claim 3, characterized in that: The bearing is a fish-eye bearing, and the fish-eye bearing includes a fish-eye bearing inner ring and a fish-eye bearing outer ring. The fish-eye bearing outer ring is installed in the upper threaded sleeve and is limited and clamped by the lower threaded sleeve.

7. The hot bed leveling support structure according to claim 1, wherein: The fixed connection assembly includes a third bolt, a spring and a hand-tightening nut. The third bolt penetrates through the base and the heating plate, the spring is wound around the third bolt, and the two ends of the spring respectively abut against the base and the heating plate. The hand-tightening nut is threadedly fixed to the third bolt, and the hand-tightening nut is located outside the base and abuts against the base.

8. A 3D printer, characterized in that, It includes the hot bed leveling support structure according to any one of claims 1-7.

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