Damping structure suitable for 3D printer and 3D printer with damping structure

Abstract

The utility model relates to a damping structure suitable for a 3D printer and the 3D printer with the damping structure, and belongs to the technical field of damping, the damping structure comprises a sliding sleeve and at least two springback assemblies, the at least two springback assemblies are symmetrically distributed on the peripheral side of the sliding sleeve, and each springback assembly comprises a guide rod, a reset spring, a sliding block, an upper connecting rod and a lower connecting rod; one end of the guide rod is fixed on the sliding sleeve and is provided with a guide blind hole; one end of the reset spring is fixed at the hole bottom of the guide blind hole; the top end of the upper connecting rod is hinged to the top plate, and the bottom end is hinged to the sliding block. The bottom ends of the lower connecting rods are hinged to the bottom plate, and the top ends of the lower connecting rods are hinged to the sliding blocks. The sliding block slides in the guide blind hole and is in contact with the reset spring at the bottom of the guide blind hole, so that the sliding block, the upper connecting rod and the lower connecting rod can be pushed to reset while the reset spring returns to the initial state, the elastic piece is assisted to return to the initial position of the top plate, and the stability and the springback speed of the top plate are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, and in particular to a shock absorbing structure suitable for a 3D printer. Background Art

[0002] A 3D printer, also known as a three-dimensional printer, is a device that uses additive manufacturing rapid prototyping technology. It uses digital model files as a printing reference, uses adhesive printing materials, controls the position of the print head layer by layer, releases the printing material, repeats this process layer by layer, and finally completes the three-dimensional product printing of the overall model.

[0003] In the existing technology, when the printer is printing, the printing speed is relatively fast. When the printer suddenly changes direction or starts or stops, the high acceleration will bring great inertia, thus causing vibration and causing the printing plane to shift instantly. For old equipment that lacks maintenance, problems such as insufficient lubrication and loose parts will also cause vibrations in all directions, which will have a great impact on the printing accuracy of high-precision printers.

[0004] In order to solve the above technical problems, 3D printers usually use springs for shock absorption. For example, the patent number is: CN106763394A, and the name is a shock absorption structure of a 3D printer and a 3D printer. In this patent, the spring shock absorption structure is fixed at the bottom of the printer body, which can provide a good shock absorption effect for the 3D printer when printing products; however, due to the slow rebound performance of the spring, the printing plane will be unstable and prone to jitter during printing, which can easily lead to problems such as unsatisfactory printing effect and low printing accuracy.

[0005] Therefore, how to design a 3D printing shock-absorbing structure with a stable printing plane, not prone to shaking and good rebound effect and a 3D printer having the same is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0006] The utility model provides a shock absorbing structure suitable for a 3D printer, which solves the technical problems that the shock absorbing mechanism of the existing 3D printer is unstable, easy to shake and has a poor rebound effect.

[0007] The utility model solves the above technical problems with the following technical solutions: a shock absorbing structure suitable for a 3D printer, comprising a bottom plate, an elastic member and a top plate, wherein the bottom end of the elastic member is vertically fixed to the top surface of the bottom plate; the bottom surface of the top plate is vertically fixed to the top of the elastic member; and further comprising: a sliding sleeve and at least two rebound components,

[0008] The sliding sleeve is slidably mounted on the outer peripheral side of the elastic member along the height direction of the elastic member; at least two of the rebound components are symmetrically distributed on the outer peripheral side of the sliding sleeve and each includes a guide rod, a return spring, a slider, an upper connecting rod and a lower connecting rod, one end of the guide rod is vertically fixed to the outer peripheral side wall of the sliding sleeve and one end face of the guide rod is provided with a guide blind hole arranged along the axial direction, and the two opposite outer side walls of the guide rod are provided with a through hole communicating with the guide blind hole and the two through holes are both long strip structures extending along the axial direction of the guide rod; one end of the return spring is coaxially fixed to the bottom of the guide blind hole; the slider slides in the guide blind hole and can touch the other end of the return spring, and the two opposite ends of the slider extend out of the two through holes respectively; the top end of the upper connecting rod is hinged to the bottom edge of the top plate and its bottom end is hinged to the protruding end of the slider extending out of the through hole; the bottom end of the lower connecting rod is hinged to the top surface of the bottom plate and its top end is hinged to the protruding end of the slider extending out of the through hole.

[0009] The beneficial effects of the utility model are as follows: the shock absorbing structure of the traditional 3D printer is improved, and the slider is used to slide in the guide blind hole and touch the reset spring at the bottom of the guide blind hole. Since the top end of the upper connecting rod is hinged to the bottom edge of the top plate and its bottom end is hinged to the protruding end of the slider extending out of the through hole, and since the bottom end of the lower connecting rod is hinged to the top surface of the bottom plate and its top end is hinged to the protruding end of the slider extending out of the through hole, the slider, the upper connecting rod and the lower connecting rod can be pushed to reset while the reset spring restores the initial state, thereby assisting the elastic member to restore the initial position of the top plate, improving the stability and rebound speed of the top plate, and avoiding large-scale shaking of the top plate.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the elastic member includes a gas spring and a shock-absorbing block, the bottom end of the pressure cylinder of the gas spring is vertically fixed to the top surface of the base plate and its piston rod reciprocates along a vertical line perpendicular to the base plate; the bottom end of the shock-absorbing block is fixed to the piston rod of the gas spring; the bottom surface of the top plate is vertically fixed to the top of the shock-absorbing block; the sliding sleeve is slidably mounted on the outer peripheral side of the pressure cylinder along the height direction of the pressure cylinder.

[0012] The above further beneficial effect is: utilizing the gas spring in combination with the shock absorbing block to enhance the vibration absorption effect, improve the stability of the top plate, and avoid the shaking of the top plate.

[0013] Furthermore, the shock absorbing block is made of plastic material.

[0014] In addition, a 3D printer is provided, comprising: a shell, a loader, a mechanical arm, a printer head, a printing table and the shock-absorbing structure located inside the shell, wherein the interior of the shell is hollow and an inlet and outlet are provided on the top surface; the loader is fixed to the top surface of the shell; the mechanical arm is fixed on the loader; the printer head is fixed to the free end of the mechanical arm above the inlet and outlet of the shell; the bottom surface of the bottom plate is fixed parallel to the inner bottom surface of the shell; the top plate can be movably extended out or movably inserted into the inlet and outlet; the printing table is fixed to the top surface of the top plate and movably extends into or movably inserts into the inlet and outlet of the shell with the top plate.

[0015] A further beneficial effect of adopting the above is that by fixing the shock-absorbing structure inside the shell, the vibration resistance of the printing table can be improved, the vibration amplitude of the printing table can be reduced, and the printing accuracy of the 3D printer can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a 3D printer of the utility model;

[0017] Figure 2 This is a schematic diagram of the elongated structure of a shock absorbing structure suitable for a 3D printer of the utility model;

[0018] Figure 3 The utility model is a schematic diagram of a contraction mechanism of a shock absorbing structure suitable for a 3D printer.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0020] 1. Sliding sleeve, 2. Rebound assembly, 21. Guide rod, 211. Guide blind hole, 212. Perforation, 22. Return spring, 23. Slider, 24. Upper connecting rod, 25. Lower connecting rod, 3. Bottom plate, 4. Elastic part, 41. Gas spring, 42. Shock absorber, 5. Top plate, 6. Shell, 7. Loader, 8. Robotic arm, 9. Print head, 10. Print table. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] like Figure 1 As shown, a shock absorbing structure suitable for a 3D printer includes a bottom plate 3, an elastic member 4 and a top plate 5, wherein the bottom end of the elastic member 4 is vertically fixed to the top surface of the bottom plate 3; the bottom surface of the top plate 5 is vertically fixed to the top of the elastic member 4; and further includes: a sliding sleeve 1 and at least two rebound components 2,

[0023] The sliding sleeve 1 is slidably sleeved on the outer peripheral side of the elastic member 4 along the height direction of the elastic member 4; at least two rebound components 2 are symmetrically distributed on the outer peripheral side of the sliding sleeve 1 and each includes a guide rod 21, a return spring 22, a slider 23, an upper connecting rod 24 and a lower connecting rod 25, one end of the guide rod 21 is vertically fixed to the outer peripheral side wall of the sliding sleeve 1 and one end surface of the guide rod 21 is provided with a guide blind hole 211 arranged along the axial direction, and the two outer side walls opposite to the guide rod 21 are provided with a through hole 212 communicating with the guide blind hole 211 and the two through holes 212 are along the guide rod 2 1 is an axially extending long strip structure; one end of the return spring 22 is coaxially fixed to the bottom of the guide blind hole 211; the slider 23 slides in the guide blind hole 211 and can touch the other end of the return spring 22, and two opposite ends of the slider 23 extend out of two through holes 212 respectively; the top end of the upper connecting rod 24 is hinged to the bottom edge of the top plate 5 and its bottom end is hinged to the protruding end of the slider 23 extending out of the through hole 212; the bottom end of the lower connecting rod 25 is hinged to the top surface of the bottom plate 3 and its top end is hinged to the protruding end of the slider 23 extending out of the through hole 212.

[0024] In some specific embodiments, the elastic member 4 may include a gas spring 41 and a shock-absorbing block 42, the bottom end of the pressure cylinder of the gas spring 41 is vertically fixed to the top surface of the base plate 3 and its piston rod reciprocates along a vertical line perpendicular to the base plate 3; the bottom end of the shock-absorbing block 42 is fixed on the piston rod of the gas spring 41; the bottom surface of the top plate 5 is vertically fixed to the top of the shock-absorbing block 42; the sliding sleeve 1 is slidably sleeved on the outer peripheral side of the pressure cylinder along the height direction of the pressure cylinder.

[0025] Specifically, the shock absorbing block 42 is made of plastic material.

[0026] In addition, a 3D printer is provided, including: a shell 6, a loader 7, a mechanical arm 8, a printer head 9, a printing table 10 and a shock-absorbing structure located inside the shell 6, the interior of the shell 6 is hollow and an inlet and outlet are provided on its top surface; the loader 7 is fixed on the top surface of the shell 6; the mechanical arm 8 is fixed on the loader 7; the printer head 9 is fixed to the free end of the mechanical arm 8 above the inlet and outlet of the shell 6; the bottom surface of the bottom plate 3 is fixed parallel to the inner bottom surface of the shell 6; the top plate 5 can be movably extended out or movably inserted into the inlet and outlet; the printing table 10 is fixed on the top surface of the top plate 5 and can be movably extended into or movably inserted into the inlet and outlet of the shell 6 with the top plate 5.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorbing structure suitable for a 3D printer, comprising a bottom plate (3), an elastic member (4) and a top plate (5), wherein the bottom end of the elastic member (4) is vertically fixed to the top surface of the bottom plate (3); the bottom surface of the top plate (5) is vertically fixed to the top of the elastic member (4); characterized in that: Also includes: A sliding sleeve (1), wherein the sliding sleeve (1) is slidably sleeved on the outer peripheral side of the elastic member (4) along the height direction of the elastic member (4); At least two rebound assemblies (2), at least two of the rebound assemblies (2) are symmetrically distributed on the outer peripheral side of the sliding sleeve (1) and each comprises a guide rod (21), a return spring (22), a slider (23), an upper connecting rod (24) and a lower connecting rod (25), one end of the guide rod (21) is vertically fixed to the outer peripheral side wall of the sliding sleeve (1) and one end surface of the guide rod (21) is provided with an axially arranged guide blind hole (211), two opposite outer side walls of the guide rod (21) are provided with a through hole (212) communicating with the guide blind hole (211), and the two through holes (212) are both long strip structures extending along the axial direction of the guide rod (21); One end of the return spring (22) is coaxially fixed to the bottom of the guide blind hole (211); the slider (23) slides in the guide blind hole (211) and can touch the other end of the return spring (22), and the two opposite ends of the slider (23) extend out of the two through holes (212) respectively; the top end of the upper connecting rod (24) is hinged to the bottom edge of the top plate (5) and the bottom end thereof is hinged to the end of the slider (23) extending out of the through hole (212); the bottom end of the lower connecting rod (25) is hinged to the top surface of the bottom plate (3) and the top end thereof is hinged to the end of the slider (23) extending out of the through hole (212).

2. A shock absorbing structure suitable for a 3D printer according to claim 1, characterized in that: The elastic member (4) comprises a gas spring (41) and a shock absorbing block (42); the bottom end of the pressure cylinder of the gas spring (41) is vertically fixed to the top surface of the bottom plate (3) and its piston rod reciprocates along a vertical line perpendicular to the bottom plate (3); the bottom end of the shock absorbing block (42) is fixed to the piston rod of the gas spring (41); the bottom surface of the top plate (5) is vertically fixed to the top end of the shock absorbing block (42); and the sliding sleeve (1) is slidably sleeved on the outer peripheral side of the pressure cylinder along the height direction of the pressure cylinder.

3. A shock absorbing structure suitable for a 3D printer according to claim 2, characterized in that: The shock absorbing block (42) is made of plastic material.

4. A 3D printer, characterized in that: include: A shell (6), a loader (7), a mechanical arm (8), a printer head (9), a printing table (10) and a shock absorbing structure as claimed in any one of claims 1 to 3 located inside the shell (6), wherein the interior of the shell (6) is hollow and an inlet and outlet are provided on its top surface; the loader (7) is fixed to the top surface of the shell (6); the mechanical arm (8) is fixed to the loader (7); the printer head (9) is fixed to the free end of the mechanical arm (8) above the inlet and outlet of the shell (6); the bottom surface of the bottom plate (3) is fixed parallel to the inner bottom surface of the shell (6); the top plate (5) can be movably extended out or movably inserted into the inlet and outlet; the printing table (10) is fixed to the top surface of the top plate (5) and can be movably extended into or movably inserted into the inlet and outlet of the shell (6) along with the top plate (5).

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