Tensioning mechanism for 3D printing equipment

Abstract

The utility model discloses a tensioning mechanism for 3D printing equipment. The tensioning mechanism comprises a base (2), a cantilever (4) provided with a roller (3) and a first rotating shaft (8), a first shaft hole (43) is formed in the cantilever (4); the first rotating shaft (8) penetrates through the first shaft hole (43) and then is movably connected with the base (2). According to the tensioning mechanism for the 3D printing equipment, the tensioning degree of a wire rod can be adjusted, so that the wire rod is not folded, and smooth and constant-speed paying-off is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, in particular to a tensioning mechanism for 3D printing equipment. Background Art

[0002] 3D printer, also known as three-dimensional printer, is a kind of machine with cumulative manufacturing technology, that is, rapid prototyping technology. At present, in the sub-field of fused deposition model (FDM) 3D printing technology, many kinds of wire materials have been developed, and their diameters are mainly

[0003] 1.75mm, 2.8mm, 3.0mm, etc. However, these wires are usually wound on I-shaped wheels of different sizes after leaving the production line or leaving the factory. As time goes by, the wires attached to the I-shaped wheels are prone to twisting and bending during the secondary pay-off due to the stress generated and shaped, making it impossible to pay out evenly and at high speed. Utility Model Content

[0004] The utility model aims to provide a tensioning mechanism for 3D printing equipment.

[0005] The utility model provides a tensioning mechanism for 3D printing equipment, comprising a base (2), a cantilever (4) provided with a roller (3), and a first rotating shaft (8); the cantilever (4) is provided with a first shaft hole (43); the first rotating shaft (8) passes through the first shaft hole (43) and is movably connected to the base (2).

[0006] Preferably, the base (2) comprises a first plate (25), a second plate (23) and a third plate (26); the first plate (25), the second plate (23) and the third plate (26) are sequentially connected to form a C-shaped structure; a second axial hole (22) is provided on the first plate (25); a first axial groove (24) is provided on the third plate (26); one end of the first rotating shaft (8) is sequentially inserted into the second axial hole (22) and the first axial hole (43) and then abuts against the first axial groove (24).

[0007] Preferably, the tensioning mechanism for 3D printing equipment provided by the utility model further includes a second rotating shaft (7); a groove (42) is provided at one end of the cantilever (4) away from the first rotating shaft (8); third axial holes (41) are provided on both side walls of the groove (42); and the roller (3) and the cantilever (4) are hingedly connected via the second rotating shaft (7).

[0008] Preferably, the first plate body (25) is further provided with a fourth axial hole (28); the third plate body (26) is further provided with a second axial groove (27); the fourth axial hole (28) and the second axial groove (27) are coaxially arranged.

[0009] Preferably, the tensioning mechanism for 3D printing equipment provided by the utility model further comprises a hand screw (5); and a first threaded hole (29) matching the hand screw (5) is provided on the second plate (23).

[0010] Preferably, the tensioning mechanism for a 3D printing device provided by the utility model further comprises a fixed cover plate (1) and four groups of screws (6); the fixed cover plate (1) is provided with four groups of first fixing holes (11); the top of the first plate body (25) is provided with second fixing holes (21) matching the positions and numbers of the first fixing holes (11); the first fixing holes (11) and the second fixing holes (21) are both threaded holes.

[0011] The tensioning mechanism for 3D printing equipment provided by the utility model can adjust the tension of the wire material so that the wire is not bent to ensure smooth and uniform wire release. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1-Figure 3 A three-dimensional structural schematic diagram of a tensioning mechanism for a 3D printing device provided by the utility model;

[0013] Figure 4 A schematic diagram of the structure of the fixed cover plate, the base and the first rotating shaft provided in an embodiment of the utility model;

[0014] Figure 5 A schematic diagram of the structure of the fixed cover plate, the base and the first rotating shaft provided in an embodiment of the utility model;

[0015] Figure 6 A schematic diagram of the structure of a base provided by an embodiment of the utility model;

[0016] Figure 7 A schematic diagram of the structure of a fixed cover plate provided in an embodiment of the utility model;

[0017] Figure 8 This is a schematic structural diagram of a cantilever provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 8As shown, the tensioning mechanism for 3D printing equipment provided in this embodiment includes a base 2, a cantilever 4 provided with a roller 3, and a first rotating shaft 8; the cantilever 4 is provided with a first shaft hole 43; the first rotating shaft 8 passes through the first shaft hole 43 and is movably connected to the base 2. Those skilled in the art can understand that the base 2 is used to be fixed on the external frame of the 3D printing equipment, the wire is abutted against the roller 3, and the cantilever 4 is rotated around the first rotating shaft 8 to adjust the tension of the wire so that the wire is not folded to ensure smooth and uniform wire release.

[0020] Further, the base 2 includes a first plate 25, a second plate 23 and a third plate 26; the first plate 25, the second plate 23 and the third plate 26 are sequentially connected to form a C-shaped structure; the first plate 25 is provided with a second shaft hole 22; the third plate 26 is provided with a first shaft groove 24; one end of the first shaft 8 is sequentially inserted into the second shaft hole 22 and the first shaft hole 43 and then abuts against the first shaft groove 24. Those skilled in the art can understand that the cantilever 4 can rotate around the first shaft 8, thereby changing the angle between the cantilever 4 and the second plate 23.

[0021] Furthermore, the tensioning mechanism for 3D printing equipment provided in this embodiment further includes a second rotating shaft 7; a groove 42 is provided at one end of the cantilever 4 away from the first rotating shaft 8; third shaft holes 41 are provided on both side walls of the groove 42; and the roller 3 and the cantilever 4 are hingedly connected through the second rotating shaft 7. Those skilled in the art can understand that the wire is in contact with the outer side of the roller 3, and the tension of the wire can be adjusted by the opening and closing angle of the cantilever 4.

[0022] Furthermore, the first plate 25 is provided with a fourth shaft hole 28, the third plate 26 is provided with a second shaft groove 27, and the fourth shaft hole 28 and the second shaft groove 27 are coaxially arranged. Those skilled in the art will appreciate that the direction of the cantilever 4 can be changed according to actual needs.

[0023] Furthermore, the tensioning mechanism for 3D printing equipment provided in this embodiment further includes a hand screw 5; the second plate 23 is provided with a first threaded hole 29 matching the hand screw 5. Those skilled in the art can understand that by rotating the hand screw 5, the opening and closing angle of the cantilever 4 can be controlled.

[0024] Further, the tensioning mechanism for 3D printing equipment provided in this embodiment also includes a fixed cover plate 1 and four sets of screws 6; the fixed cover plate 1 is provided with four sets of first fixing holes 11; the top of the first plate body 25 is provided with second fixing holes 21 that match the position and number of the first fixing holes 11; the first fixing holes 11 and the second fixing holes 21 are both threaded holes. Those skilled in the art can understand that the fixed cover plate 1 can be fixed to the first plate body 25 by four sets of screws 6, thereby preventing the first rotating shaft 8 from sliding out; secondly, the vertical position of the tensioning mechanism can be adjusted by the fixed cover plate due to the different positions of the belts. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that it is still possible to modify the technical solutions recorded in the above embodiments, or to replace some of the technical features therein by equivalent means; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A tensioning mechanism for a 3D printing device, characterized in that: The invention comprises a base (2), a cantilever (4) provided with a roller (3), and a first rotating shaft (8); the cantilever (4) is provided with a first shaft hole (43); the first rotating shaft (8) passes through the first shaft hole (43) and is movably connected to the base (2); The base (2) comprises a first plate (25), a second plate (23) and a third plate (26); the first plate (25), the second plate (23) and the third plate (26) are sequentially connected to form a C-shaped structure; a second shaft hole (22) is provided on the first plate (25); a first shaft groove (24) is provided on the third plate (26); one end of the first rotating shaft (8) is sequentially inserted into the second shaft hole (22) and the first shaft hole (43) and then abuts against the first shaft groove (24).

2. The tensioning mechanism for 3D printing equipment according to claim 1, characterized in that: It also includes a second rotating shaft (7); a groove (42) is provided at one end of the cantilever (4) away from the first rotating shaft (8); third shaft holes (41) are provided on both side walls of the groove (42); and the roller (3) and the cantilever (4) are hingedly connected via the second rotating shaft (7).

3. The tensioning mechanism for a 3D printing device according to claim 2, characterized in that: The first plate body (25) is also provided with a fourth axial hole (28); the third plate body (26) is also provided with a second axial groove (27); the fourth axial hole (28) and the second axial groove (27) are coaxially arranged.

4. The tensioning mechanism for 3D printing equipment according to claim 3, characterized in that: It also includes a hand screw (5); the second plate body (23) is provided with a first threaded hole (29) matching the hand screw (5).

5. The tensioning mechanism for 3D printing equipment according to claim 4, characterized in that: It also includes a fixed cover plate (1) and four groups of screws (6); the fixed cover plate (1) is provided with four groups of first fixing holes (11); the top of the first plate body (25) is provided with second fixing holes (21) that match the positions and numbers of the first fixing holes (11); the first fixing holes (11) and the second fixing holes (21) are both threaded holes.

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