A platform material discharging structure for a 3D printer

Abstract

The present invention relates to a platform material discharging structure for a 3D printer, comprising: a printer main body, and a platform part provided on the printer main body, wherein the platform part faces the printing surface; the platform part includes a flat plate provided on the printer main body, and a plurality of strip-shaped grooves arranged in a straight line on the flat plate. The flat plate, a plurality of semi-closed plates and a plurality of split rods of the present invention constitute a forming platform for 3D printed parts. By operating the counterclockwise rotation of the operating shaft, the plurality of split rods can be driven to rotate, and gradually partially separate from the outside to the center of the printed part. When the operating shaft is continuously operated to drive the plurality of split rods to rotate, the plurality of split rods can press a plurality of rows of abutting columns to gradually partially separate from the inside to the outside of the printed part along a plurality of rows of through holes. The material discharging process is carried out in multiple directions, so as to make the material discharging process of the printed part have good coordination, and avoid the distortion or excessive bending caused by the unidirectional force during the material discharging process of the printed part, thereby preventing damage.

Description

Technical Field

[0001] The invention relates to the technical field of 3D printers, and in particular to a platform stripping structure for a 3D printer. Background Art

[0002] There are generally two types of desktop 3D printers, FDM and light-curing. Both printing processes require molding on a printing platform and then peeling the printed object off the platform.

[0003] The existing patent number CN201821715496.0 is a 3D printer printing tray device that is convenient for unloading. At the end of printing, the guide column can be pushed, and the guide column moves relative to the upper tray to push the printed part, so that the printed part is separated from the upper tray, thereby realizing unloading. The patent has the following problems:

[0004] The pushing force of the guide pin on the printed part is in one direction, which still easily causes difficulty in the material stripping operation; and the force stripping process of the printed part cannot be carried out in multiple positions in sequence, which makes the stripping of the printed part uncoordinated and easy to cause damage. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the technical problem that the printed part is not separated from the platform in the prior art, and to provide a platform material removal structure for a 3D printer.

[0006] The technical solution adopted by the present invention to solve the technical problem is: a platform stripping structure for a 3D printer, comprising: a printer body, a platform portion arranged on the printer body, the platform portion facing the printing surface;

[0007] The platform portion includes a flat plate disposed on the printer body, a plurality of strip grooves disposed on the flat plate in a straight line, a plurality of semi-enclosed plates disposed on the flat plate and coplanar with the strip grooves at the lower end of the flat plate, a plurality of rows of through holes disposed on the semi-enclosed plates, a plurality of rows of abutment columns inserted in the plurality of rows of through holes and coplanar with the lower end of the flat plate, and a plurality of split rods inserted in the plurality of strip grooves and coplanar with the lower end of the flat plate;

[0008] A plurality of split rods are rotatably connected to the flat plate via an operating shaft, wherein

[0009] By rotating the operating shaft counterclockwise, the plurality of split rods can gradually move away from the plurality of strip-shaped grooves, so that the plurality of split rods are partially separated from the printed object;

[0010] The plurality of split rods can push down the plurality of rows of the abutment posts counterclockwise to separate the printed matter from the plurality of rows of the abutment posts.

[0011] Further, there are four of the abutting columns in each column, and the sizes of the four abutting columns gradually decrease.

[0012] Further, the platform demoulding structure for the 3D printer further includes a plurality of springs;

[0013] Each two of the springs are respectively arranged between both sides of each of the abutting columns and each of the semi-closed plates, where

[0014] The plurality of springs can be compressed.

[0015] Further, the split rod includes a first connecting rod;

[0016] One side of the first connecting rod is arc-shaped, and the center of the arc part is coaxial with the center of the operating shaft.

[0017] Further, the split rod further includes a second connecting rod arranged at the lower end of the first connecting rod;

[0018] The first connecting rod is longer than the second connecting rod, and the inner corner at the junction of the first connecting rod and the second connecting rod fits an outer corner of the semi-closed plate.

[0019] Further, two card slots are arranged on both sides of each of the strip-shaped grooves;

[0020] Two abutting parts are arranged on both sides of each of the split rods, where

[0021] The two abutting parts can be clamped with the two card slots.

[0022] Further, the abutting part includes a dovetail groove arranged at the side end of the split rod and a hollow column arranged in the dovetail groove, where

[0023] After the hollow column is clamped with the card slot, it can expand and deform along the dovetail groove.

[0024] Further, the abutting part further includes a plurality of deformation grooves arranged in a circumferential manner at the side end of the hollow column.

[0025] Further, the deformation groove includes a triangular groove arranged at the side end of the hollow column and a straight seam arranged at the central axis of the triangular groove.

[0026] The beneficial effects of the present invention are as follows. The flat plate, several semi-closed plates and several split rods of the present invention form a forming platform for 3D printed parts. By operating the counterclockwise rotation of the operating shaft, the several split rods can be driven to rotate, and gradually partially separate from the outside to the center of the printed part. When the operating shaft is continuously operated to drive the several split rods to rotate, the several split rods can press multiple rows of abutting columns to gradually partially separate from the inside to the outside of the printed part along multiple rows of through holes. The material removal process is carried out in multiple directions, so as to achieve good coordination in the material removal process of the printed part, and avoid damage caused by excessive twisting or bending due to unidirectional force during the material removal process of the printed part. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention will be further described below with reference to the drawings and embodiments.

[0028] Figure 1 is a perspective view of a preferred embodiment of the present invention;

[0029] Figure 2 is a perspective view of a partial preferred embodiment of the present invention;

[0030] Figure 3 is a front cross-sectional view of the present invention with the split rod in a stationary state;

[0031] Figure 4 is a front cross-sectional view of the present invention with the split rod in a moving state;

[0032] Figure 5 is the Figure 4 enlarged view at A in;

[0033] Figure 6 is the state diagram of the abutting part of the present invention.

[0034] In the figure:

[0035] 1, printer main body;

[0036] 2, platform part; 21, flat plate; 22, strip groove; 23, semi-closed plate; 24, through hole; 25, abutting column;

[0037] 26, split rod; 261, first connecting rod; 262, second connecting rod;

[0038] 3, spring; 4, card slot; 5, abutting part; 51, dovetail groove; 52, hollow column; 53, deformation groove; 531, triangular groove; 532, straight seam; 6, operating shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] The present invention will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic manner, so they only show the components related to the present invention.

[0040] As shown Figure 1 in Figure 1 FIG. 1, which is a perspective view of a preferred embodiment of the present invention; as shown Figure 2 in Figure 2 FIG. 2, which is a perspective view of a partial preferred embodiment of the present invention; as shown Figure 3 in Figure 3 FIG. 3, which is a front sectional view of the split rod of the present invention in a static state; as shown Figure 4 in Figure 4 FIG. 4, which is a front sectional view of the split rod of the present invention in a moving state; as shown Figure 5 in Figure 5 FIG. 5, which is an enlarged view of part A in the present invention; as shown Figure 4 in Figure 6 FIG. 6, which is a state diagram of the abutting portion of the present invention. As shown Figure 6 in Figures 1-6 FIG. 7, the present invention provides a platform demolding structure for a 3D printer, including: a printer main body 1, a platform portion 2 provided on the printer main body 1, the platform portion 2 facing the printing surface, and the platform portion 2 can be used as the platform of an FDM printer or the platform of a stereolithography printer, and can be placed upright or inverted according to actual needs;

[0041] The platform portion 2 includes a flat plate 21 provided on the printer main body 1, a plurality of strip-shaped grooves 22 arranged in a straight line on the flat plate 21, a plurality of semi-closed plates 23 provided at the lower end of the flat plate 21 where the plurality of strip-shaped grooves 22 are coplanar, a plurality of through holes 24 provided in multiple columns of the plurality of semi-closed plates 23, a plurality of abutting columns 25 inserted through the multiple columns of through holes 24 and coplanar with the lower end of the flat plate 21, and a plurality of split rods 26 inserted through the plurality of strip-shaped grooves 22 and coplanar with the lower end of the flat plate 21;

[0042] The plurality of split rods 26 are rotatably connected to the flat plate 21 through an operating shaft 6, wherein

[0043] when the operating shaft 6 is rotated counterclockwise, the plurality of split rods 26 can gradually move away from the plurality of strip-shaped grooves 22, so that the plurality of split rods 26 are partially separated from the printed object;

[0044] A plurality of the split rods 26 can push down multiple columns of the abutting columns 25 counterclockwise, so that the multiple columns of the abutting columns 25 push up the printed object to separate. Specifically, the flat plate 21, a plurality of semi-closed plates 23 and a plurality of split rods 26 form a forming platform for 3D printed parts. The plurality of split rods 26 can be driven to rotate by operating the counterclockwise rotation of the operating shaft 6 and gradually partially separate from the outside to the center of the printed object. When continuing to operate the operating shaft 6 to drive the plurality of split rods 26 to rotate, the plurality of split rods 26 can press multiple columns of the abutting columns 25 to gradually partially separate from the inside to the outside of the printed object along multiple through holes 24. The material removal process is carried out in multiple directions, so as to make the material removal process of the printed object have good coordination and avoid distortion or excessive bending caused by unidirectional force during the material removal process of the printed object, resulting in damage.

[0045] Optionally, each column of the abutting columns 25 is four, and the sizes of the four abutting columns 25 gradually decrease. Specifically, the outer diameter of the end face of the abutting column 25 close to the split rod 26 is the largest size, and the outer diameter of the end face of the abutting column 25 far from the split rod 26 is the smallest size. The trajectory of the gradually decreasing sizes of the four abutting columns 25 is from the position close to the split rod 26 towards the position far from the split rod 26. The four abutting columns 25 can exert a gradually decreasing removal force on the printed object during the force application process, ensuring the removal efficiency under the condition that the printed object is not damaged.

[0046] Optionally, the platform material removal structure for the 3D printer further includes a plurality of springs 3;

[0047] Two of the springs 3 are respectively arranged between both sides of each abutting column 25 and each semi-closed plate 23, where

[0048] The plurality of springs 3 can expand and contract. Specifically, in the initial state, the abutting column 25 keeps the lower end face coplanar with the lower end face of the semi-closed plate 23 based on the positioning effect of the spring 3. When the abutting column 25 is forced to descend, the spring 3 stretches and stores energy. When the abutting column 25 is not forced, the spring 3 releases the stored energy to let the abutting column 25 return to the initial state, ensuring the repeated use of the abutting column 25 for the material removal work of the printed object.

[0049] Optionally, the split rod 26 includes a first connecting rod 261 and a second connecting rod 262 arranged at the lower end of the first connecting rod 261;

[0050] One side surface of the first connecting rod 261 is arc-shaped, and the center of the arc part is coaxial with the center of the operating shaft 6;

[0051] The first connecting rod 261 is longer than the second connecting rod 262, and the intersection internal angle of the first connecting rod 261 and the second connecting rod 262 fits against a yang angle of the semi-closed plate 23. Specifically, the arc portion of the first connecting rod 261 ensures that its rotation trajectory will not deviate and will not be blocked or hit other related components during rotation. The second connecting rod 262 can ensure the sealing of the connection state between the semi-closed plate 23, so that the printing and forming work is not hindered and there is no adverse situation of printing collapse.

[0052] There are also the following problems with this patent. The split rod 26 is prone to swing under stress, affecting the printing work.

[0053] Optionally, two card slots 4 are provided on both sides of each strip-shaped groove 22.

[0054] Two abutting portions 5 are provided on both sides of each split rod 26, where

[0055] The two abutting portions 5 can be engaged with the two card slots 4. Specifically, during the process of the split rod 26 horizontally penetrating the strip-shaped groove 22, the two abutting portions 5 can be engaged with the two card slots 4 to keep the split rod 26 fixed in position. When the split rod 26 is not at a horizontal angle and disengages from the strip-shaped groove 22, the abutting portions 5 disengage from the card slots 4. This state requires a certain degree of force to occur, which is beneficial for the comprehensive use of the split rod 26.

[0056] Optionally, the abutting portion 5 includes a dovetail groove 51 provided at the side end of the split rod 26 and a hollow column 52 provided in the dovetail groove 51, where

[0057] After the hollow column 52 is engaged with the card slot 4, it can expand and deform along the dovetail groove 51. Specifically, the opening of the dovetail groove 51 is larger on the inside and smaller on the outside. One point of the hollow column 52 is welded and fixed to the dovetail groove 51. The hollow column 52 is made of an elastic material and can deform specifically within a certain space during the process of engaging with the dovetail groove 51, ensuring the stability of the deformation and engagement state of the hollow column 52 and preventing the situation where the deformation trajectory of the hollow column 52 is not restricted.

[0058] Optionally, the abutting portion 5 further includes a number of deformation grooves 53 circumferentially provided at the side end of the hollow column 52. Specifically, the deformation grooves 53 provide a good deformation space for the hollow column 52 and can be guided to a certain extent during the deformation process, making the deformation process of the hollow column 52 smoother.

[0059] Optionally, the deformation groove 53 includes a triangular groove 531 provided at the side end of the hollow column 52 and a straight slit 532 provided at the central axis of the triangular groove 531. Specifically, the triangular groove 531 is adapted to expand and close to meet the deformation requirements in all directions of the hollow column 52, and the straight slit 532 can extend the deformation range of the hollow column 52 and improve the service quality of the hollow column 52.

[0060] Inspired by the above ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A platform unloading structure for a 3D printer, characterized in that, Comprising: A printer main body (1), a platform portion (2) provided on the printer main body (1), and the platform portion (2) faces the printing surface; The platform portion (2) includes a flat plate (21) provided on the printer main body (1), a plurality of strip-shaped grooves (22) arranged in a straight line on the flat plate (21), a plurality of semi-enclosed plates (23) provided at the lower end of the flat plate (21) where the plurality of strip-shaped grooves (22) are coplanar, a plurality of through holes (24) provided in multiple columns of the plurality of semi-enclosed plates (23), a plurality of abutting columns (25) inserted through the multiple columns of through holes (24) and coplanar with the lower end of the flat plate (21), and a plurality of split rods (26) inserted through the plurality of strip-shaped grooves (22) and coplanar with the lower end of the flat plate (21); The plurality of split rods (26) are rotatably connected to the flat plate (21) through an operating shaft (6), wherein When the operating shaft (6) is rotated counterclockwise, the plurality of split rods (26) can gradually move away from the plurality of strip-shaped grooves (22), so that a part of the plurality of split rods (26) is separated from the printed object; The plurality of split rods (26) can push the plurality of abutting columns (25) downward counterclockwise, so that the plurality of abutting columns (25) push the printed object downward to be separated; Each column of the abutting columns (25) has four, and the sizes of the four abutting columns (25) gradually decrease; The platform unloading structure for the 3D printer further includes a plurality of springs (3); Each two springs (3) are respectively arranged between both sides of each abutting column (25) and each semi-enclosed plate (23), wherein The plurality of springs (3) can be compressed; The split rod (26) includes a first connecting rod (261); One side of the first connecting rod (261) is arc-shaped, and the center of the arc part is coaxial with the center of the operating shaft (6).

2. The platform unloading structure for a 3D printer according to claim 1, wherein The split rod (26) further includes a second connecting rod (262) provided at the lower end of the first connecting rod (261); The first connecting rod (261) is longer than the second connecting rod (262), and the intersection internal angle of the first connecting rod (261) and the second connecting rod (262) fits an external angle of one place of the semi-enclosed plate (23).

3. The platform unloading structure for a 3D printer according to claim 2, wherein Two card slots (4) are provided on both sides of each strip-shaped groove (22); Two abutting parts (5) are provided on both sides of each split rod (26), wherein The two abutting parts (5) can be clamped with the two card slots (4).

4. The platform unloading structure for a 3D printer according to claim 3, wherein The abutting part (5) includes a dovetail groove (51) provided at the side end of the split rod (26) and a hollow column (52) provided in the dovetail groove (51), wherein After the hollow column (52) is clamped with the card slot (4), it can expand and deform along the dovetail groove (51).

5. The platform unloading structure for a 3D printer according to claim 4, wherein The abutment portion (5) further comprises a plurality of deformation grooves (53) which are circumferentially arranged at the side ends of the hollow column (52).

6. A platform stripping structure for a 3D printer as claimed in claim 5, characterized in that: The deformation groove (53) comprises a triangular groove (531) arranged at the side end of the hollow column (52) and a straight seam (532) arranged at the central axis of the triangular groove (531).

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