CN218400043U - 3D prints husky instrument of drawing - Google Patents

Abstract

The embodiment of the utility model provides a 3D prints husky drawing instrument, include: the sand removing device comprises a gathering collecting and sand removing auxiliary sand removing piece, a connecting piece, a rotating piece, a needle body, a needle tail end of the needle body, a brush and a connecting piece, wherein the gathering collecting and sand removing auxiliary sand removing piece is arranged at the first end of the connecting piece, the rotating piece is connected to the second end, far away from the auxiliary sand removing piece, of the connecting piece in a rotating mode, the needle tail end of the needle body is arranged at the first end of the rotating piece, and the brush is arranged at the second end, far away from the needle body, of the rotating piece. The utility model provides a 3D prints husky instrument of drawing, with husky required appurtenance integration in an organic whole in the manufacturing process of drawing, solved among the prior art problem that appurtenance is scattered and easily loses, and can switch the appurtenance fast conveniently, it is more convenient to use, and then can promote drawing efficiency greatly, the practicality is strong.

Description

3D prints husky instrument of drawing

Technical Field

The utility model relates to a drawing instrument technical field particularly, relates to a 3D prints husky drawing instrument.

Background

The sand painting, namely the sand is used as the painting, is a unique art. At present, sand painting manufacturing mainly comprises on-site ad hoc manufacturing and sand painting forming work manufacturing, for the sand painting forming work manufacturing, a non-setting adhesive template with patterns drawn is manufactured firstly, each part on the template patterns is carved with a knife in advance to form outlines, sand painting lovers only need to lift each part carved by the knife when drawing, then sand is poured on the template, the non-setting adhesive can stick the sand, and therefore a permanent sand painting is formed.

In the process of making the sand painting forming works, a plurality of auxiliary tools such as needles, spoons and the like are needed by sand painting enthusiasts, the used auxiliary tools are scattered, some auxiliary tools are small and are easy to lose, and in the process of making the sand painting, a large amount of unnecessary time is needed when the used auxiliary tools are switched, so that the painting efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

This specification provides a 3D prints sand painting instrument for overcome at least one technical problem that exists among the prior art.

According to an embodiment of this specification, there is provided a 3D printing sand painting tool, including:

an auxiliary sand moving part gathering and collecting sand and moving the sand,

a connecting piece, the auxiliary sand moving piece is arranged at the first end of the connecting piece,

a rotating piece which is rotatably connected with the second end of the connecting piece far away from the auxiliary sand moving piece,

a needle body, one end of the needle tail of the needle body is arranged at the first end of the rotating part,

and the brush is arranged at the second end of the rotating part, which is far away from the needle body.

Optionally, the first end of the rotating member is rotatably connected to the second end of the connecting member by a screw and a nut.

It is further optional, the first end of rotating member is kept away from be provided with the mounting groove on the first side of connecting piece, be provided with first through-hole in the mounting groove, be provided with on the second end of connecting piece with the corresponding second through-hole of first through-hole, the mounting groove is provided with first fixed orifices and first fixed slot respectively along the relative both sides of first direction, first fixed orifices with first fixed slot is located one side of first through-hole, the backshank one end of needle body is followed first direction wears to establish in proper order first fixed orifices the mounting groove with first fixed slot, the screw is worn to establish in proper order along the second direction first through-hole and second through-hole, and pass through the nut is fixed, the needle body is fixed in the nut of screw with between the rotating member, wherein, first direction with the second direction is perpendicular.

Still further optionally, be provided with first gasket between the needle body and the nut of screw, first gasket cover is located on the screw, the screw passes through first gasket fastening the needle body.

Still further optionally, a U-shaped groove is formed in the second end of the connecting piece, a first vertical end face of the U-shaped groove is higher than a second vertical end face of the U-shaped groove, the rotating piece is arranged in the U-shaped groove, and one side of the mounting groove, which is close to the auxiliary sand moving piece, is as high as the second vertical end face.

Optionally, the auxiliary sand moving piece, the connecting piece and the rotating piece are all 3D printing pieces.

Optionally, the rotating member is rotatably connected with the second end of the connecting member through a rotating shaft.

It is further optional, the first end of rotating member is kept away from be provided with the rectangular channel on the first side of connecting piece, be provided with the screw hole in the rectangular channel, the rectangular channel is provided with second fixed orifices and second fixed slot respectively along the relative both sides of first direction, the second fixed orifices with the second fixed slot is located one side of screw hole, the backshank one end of needle body is followed first direction wears to establish in proper order the second fixed orifices rectangular channel with the second fixed slot, with screw hole screw-thread fit's bolt install in the screw hole, the needle body is fixed in the nut of bolt with between the rotating member.

Still further optionally, a second gasket is arranged between the pin body and the nut of the bolt, the second gasket is sleeved on the bolt, and the bolt is used for fastening the pin body through the second gasket.

Still further optionally, the second end of connecting piece is provided with L type groove, the rotating member passes through the rotation axis sets up in L type inslot.

The beneficial effects of the embodiment of the specification are as follows:

required appurtenance is integrated in an organic whole in the process of making the sand paintings, has solved among the prior art problem that appurtenance is scattered easily to be lost, and can switch the appurtenance fast conveniently, and it is more convenient to use, and then can promote drawing efficiency greatly, and the practicality is strong.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an auxiliary sand moving member, a connecting member, and a rotating member in a first embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification;

fig. 2 is a front view of an auxiliary sand-moving piece and a connecting piece in a first embodiment of a 3D printing sand-painting tool provided in an embodiment of the present specification;

fig. 3 is a first state top view of a second end portion of a connecting member in a first embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification;

fig. 4 is a schematic diagram illustrating a positional relationship between a needle body, a screw, and a first gasket in a first embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification;

FIG. 5 is a first enlarged view of a portion of FIG. 3;

FIG. 6 is a second enlarged view of a portion of FIG. 3;

fig. 7 is a second top view of a first state of a second end portion of a connecting member in a first embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification;

fig. 8 is a third top view of a first state of a second end portion of a connecting member in a first embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification;

fig. 9 is a second state top view of the second end portion of the connecting member in the first embodiment of the 3D printing sand painting tool provided in the embodiments of the present specification;

FIG. 10 is a front view of an auxiliary sand-moving piece and a connecting piece in a second embodiment of the 3D printing sand-painting tool provided in the embodiments of the present specification;

fig. 11 is a first state top view of a second end portion of a connecting member in a second embodiment of a 3D printing sand painting tool provided in an embodiment of the present description;

fig. 12 is a schematic view illustrating a positional relationship between a pin body, a bolt, and a second gasket in a second embodiment of the 3D printing sand painting tool provided in the embodiments of the present specification;

FIG. 13 is an enlarged view of a portion of FIG. 11;

fig. 14 is a second top view of a second end portion of a second embodiment of a connector of the second embodiment of the 3D printing sand painting tool provided in an embodiment of the present disclosure in a first state;

fig. 15 is a second state top view of a second end portion of a connecting member in a second embodiment of a 3D printing sand painting tool provided in an embodiment of the present specification.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, to encompass a range of structures not limited to the structures listed, but may alternatively include structures not listed, or may alternatively include other elements inherent to such structures.

The embodiment of the specification discloses a 3D prints sand painting instrument. The following are detailed below.

Fig. 1 to 9 show a 3D printing sand painting tool provided according to a first embodiment of the present specification. As shown in fig. 1 to 9, the 3D printing sand painting tool mainly includes: the auxiliary sand moving tool for gathering and collecting sand and moving the sand comprises an auxiliary sand moving part 1 for gathering and moving the sand, a connecting part 2 for fixedly connecting the auxiliary sand moving part 1 with other auxiliary tools, a rotating part 3 for fixedly connecting a needle body 4 with a brush 5 and being fixed on the connecting part 2, the needle body 4 and the brush 5, wherein in the 3D printing sand painting tool, the auxiliary tool for making the sand painting comprises the auxiliary sand moving part 1, the needle body 4 and the brush 5, and the connecting part 2 and the rotating part 3 are main parts for integrating the auxiliary tools.

In the first embodiment, as shown in fig. 1, the auxiliary sand moving member 1 is an auxiliary tool, such as a spoon, a shovel, etc., for gathering and collecting sand required in the sand painting making process and moving the gathered and collected sand to a specified position, which is not limited in this embodiment, however, it should be noted that the shovel in the above description only represents a tool that the auxiliary sand moving member 1 can be made into a shovel shape, and the material used is not necessarily metallic iron.

As shown in fig. 1 and fig. 2, the connecting member 2 includes a first end 21 and a second end 22 which are oppositely arranged, the auxiliary sand moving member 1 is connected to the first end 21 of the connecting member 2, and correspondingly, the second end 22 of the connecting member 2 is an end far away from the auxiliary sand moving member 1, in a specific embodiment, the auxiliary sand moving member 1 may be integrally connected to the connecting member 2, or may be screwed or screwed, and the like, and in addition, the connecting member 2 may be a cylinder, or may be a rectangular body, and the embodiments of the present specification do not limit the connection manner between the auxiliary sand moving member 1 and the connecting member 2, and the shape of the connecting member 2.

In the first embodiment, as shown in fig. 3, the rotating element 3 is connected to the second end 22 of the connecting element 2, and the rotating element 3 and the connecting element 2 can rotate relatively, the rotating element 3 includes a first end 31 and a second end 32 that are oppositely disposed, the needle tail end 41 of the needle body 4 is disposed at the first end 31 of the rotating element 3, accordingly, the second end 32 of the rotating element 3 is an end away from the needle body 4, the brush 5 is disposed at the second end 32 of the rotating element 3, for example, as shown in fig. 6, a fixture block 51 is disposed at a fixed end of the brush 5, a fixture groove 322 is disposed at the second end 32 of the rotating element 3, the fixture groove 322 corresponds to the shape and size of the fixture block 51, the brush 5 is fixed in the fixture groove 322 on the rotating element 3 through the fixture block 51, of course, the brush 5 can also be fixed on the rotating element 3 through a threaded connection, which is not limited in this embodiment of this specification. As shown in fig. 3 and 9, the needle body 4 and the brush 5 are respectively disposed at opposite ends (i.e., the first end 31 and the second end 32) of the rotary member 3, and since the rotary member 3 is rotatably coupled to the connector 2, the needle body 4 or the brush 5 can be switched to use by rotating the rotary member 3 on the connector 2.

In a specific embodiment, as shown in fig. 3 and 5, the first end 31 of the rotating member 3 is rotatably connected to the second end 22 of the connecting member 2 by the screw 61 and the nut 62, when the needle body 4 and the brush 5 need to be switched, that is, the rotating member 3 needs to rotate on the connecting member 2, the distance between the nut 62 and the nut 611 of the screw 61 is increased by rotating the screw 61 to loosen the connecting member 2 and the rotating member 3, so that the rotating member 3 can rotate on the connecting member 2, after the switching of the auxiliary tool is completed, the distance between the nut 62 and the nut 611 of the screw 61 is decreased by rotating the screw 61 to fasten the connecting member 2 and the rotating member 3, so that the needle body 4 and the brush 5 are fixed on the connecting member 2, thereby facilitating the use of sand painters, the structure is simple, and the switching operation of the auxiliary tool is easy to implement.

In another specific embodiment, as shown in fig. 3 to 7, a mounting groove 33 is provided on a first side 311 of the first end 31 of the rotary member 3 away from the connecting member 2, a first through hole 333 is provided in the mounting groove 33, a second through hole 23 corresponding to the first through hole 333 is provided on the second end 22 of the connecting member 2, a first fixing hole 34 and a first fixing groove 35 are respectively provided on opposite sides of the mounting groove 33 in the first direction (i.e., the first side 331 and the second side 332), the first fixing hole 34 and the first fixing groove 35 are located on one side of the first through hole 333, i.e., projections of the first fixing hole 34 and the first fixing groove 35 in a plane of the mounting groove 33 are located on one side of the first through hole 333, a connecting line between the first fixing hole 34 and the first fixing groove 35 and the first through hole does not interfere with each other, and the needle body 4 is fixed by the nut 62, since the needle body 4 is sequentially inserted through the first fixing hole 34, the mounting groove 33 and the first fixing groove 35 in the first direction, the screw 61 is sequentially inserted through the first through hole 333 and the nut 611, i.e., the screw is fastened to the rotary member 3, thereby the screw nut 61 is fastened to the rotary member 3.

Wherein the first direction is perpendicular to the second direction, the first direction is the axial direction of the rotating member 3, and the second direction is the direction perpendicular to the axial line of the rotating member 3, but it should be noted and understood that the perpendicular direction in the embodiment of the present specification is not absolutely perpendicular, and may be 90 ° ± 10 °.

Further, since the needle body 4 is fastened on the rotary member 3 by the screw 61 and the nut 62, the needle body 4 can be fastened on the rotary member 3 or the needle body 4 and the rotary member 3 can be loosened by rotating the screw 61, as shown in fig. 7 and 8, when the length of the needle body 4 outside the rotary member 3 needs to be adjusted, the distance between the nut 62 and the nut 611 of the screw 61 can be increased by rotating the screw 61, so that the needle body 4 and the rotary member 3 can be loosened, so that the position of the needle body 4 in the first fixing groove 35 can be set, so as to adjust the length of the needle body 4 outside the rotary member 3, that is, the use length of the needle body 4 can be adjusted, after the adjustment is completed, the distance between the nut 62 and the nut 611 of the screw 61 can be decreased by rotating the screw 61 again, so that the needle body 4 is fastened on the rotary member 3, thereby realizing the free adjustment of the use length of the needle body 4, and the sand painter can adjust according to the use habit of the user, the sand painter can use the sand more highly.

In a specific implementation process, as shown in fig. 5, a first gasket 7 is disposed between the needle body 4 and the nut 611 of the screw 61, the first gasket 7 is sleeved on the screw 61, and the screw 61 fastens the needle body 4 through the first gasket 7, so as to ensure that the connection between the needle body 4 and the rotating member 3 is firmer.

In another specific implementation, as shown in fig. 1 and 3, the second end 22 of the connecting element 2 is provided with a U-shaped groove 24, a first vertical end surface 241 of the U-shaped groove 24 is higher than a second vertical end surface 242 of the U-shaped groove 24, the rotating element 3 is arranged in the U-shaped groove 24, the mounting groove 33 is arranged on a first side surface 311 of the first end 31 of the rotating element 3 away from the first vertical end surface 241, and a side (the first side 331 or the second side 332) of the mounting groove 33 close to the auxiliary sand moving element 1 is as high as the second vertical end surface 242, as shown in fig. 3, when the needle 4 is arranged outside the U-shaped groove 24 of the connecting element 2, the second side 332 and the second vertical end surface 242 are as high as possible, as shown in fig. 9, and when the brush 5 is arranged outside the U-shaped groove 24 of the connecting element 2, the first side 331 and the second vertical end surface 242 are as high as possible, so as to ensure that the screw 61 in the mounting groove 33 and the connecting element 2 do not interfere with each other.

In an embodiment, the auxiliary sand moving piece 1, the connecting piece 2 and the rotating piece 3 are 3D printing pieces, for example, the auxiliary sand moving piece 1, the connecting piece 2 and the rotating piece 3 are 3D stainless steel printing pieces or 3D plastic printing pieces, the embodiment of the specification does not limit the material for 3D printing, and the 3D printing sand painting tool prints main components such as the auxiliary sand moving piece 1, the connecting piece 2 and the rotating piece 3 through 3D printing, so that the manufacturing cost is lower, the manufacturing efficiency is high, and the practicability is higher.

Fig. 10 to 15 show a 3D printing sand painting tool provided according to a second embodiment of the present specification. As shown in fig. 10 to 15, the 3D printing sand painting tool mainly includes: the sand-shifting device comprises an auxiliary sand-shifting part 1 for gathering collected and moved sand, a connecting part 2 for fixedly connecting the auxiliary sand-shifting part 1 with other auxiliary tools, a rotating part 3 for fixedly connecting a needle body 4 with a brush 5 and being fixed on the connecting part 2, the needle body 4 and the brush 5, wherein the auxiliary sand-shifting part 1, the needle body 4 and the brush 5 are the same as those of the first embodiment, and the 3D sand-printing tool in the first embodiment can be referred to in the embodiment without reference, so that the details are omitted.

In the second embodiment, as shown in fig. 11 and 13, the rotating member 3 is rotatably connected to the second end 22 of the connecting member 2 via the rotating shaft 8, when the needle body 4 and the brush 5 need to be switched, the rotating member 3 can be rotated on the connecting member 2 via the rotating shaft 8, and an auxiliary tool (referring to the needle body 4 or the brush 5) required by a sand painting fan can be rotated out of the connecting member 2 for use. It should be noted and understood that when the needle body 4 or the brush 5 is used, the sand painting lovers hold the connecting piece 2 and the rotating piece 3 at the same time, so that the rotation between the two pieces can be prevented, and the switching is more free and convenient. Specifically, as shown in fig. 13, the rotary member 3 is provided with a third through hole 27, the connection member 2 is provided with a fourth through hole 26 corresponding to the third through hole 27, and the rotary shaft 8 is provided through the third through hole 27 and the fourth through hole 26.

In a specific embodiment, as shown in fig. 11-14, a rectangular groove 36 is provided on a first side 311 of the first end 31 of the rotary member 3 away from the connecting member 2, a threaded hole 37 is provided in the rectangular groove 36, a second fixing hole 38 and a second fixing groove 39 are respectively provided on two opposite sides of the rectangular groove 36 along the first direction (i.e., a first side 361 and a second side 362), the second fixing hole 38 and the second fixing groove 39 are located on one side of the threaded hole 37, that is, projections of the second fixing hole 38 and the second fixing groove 39 in the plane of the rectangular groove 36 are located on one side of the threaded hole 37, that is, a connecting line between the second fixing hole 38 and the second fixing groove 39 is located on one side of the threaded hole 37, as shown in fig. 12, so as to ensure that the needle body 4 and the bolt 9 do not interfere with each other, a needle tail end 41 of the needle body 4 is sequentially inserted through the second fixing hole 38, the rectangular groove 36 and the second fixing groove 39 along the first direction, the bolt 9 is threadedly engaged with the threaded hole 37, and the bolt 9 is installed in the threaded hole 37, so that the needle body 4 and the nut 9 is fastened on the rotary member 3, that the rotary member 3 is fastened on the rotary member.

Further, because the needle body 4 passes through the bolt 9 fastening on the rotating member 3, thereby can make the needle body 4 fasten on the rotating member 3 or make between the needle body 4 and the rotating member 3 not hard up through the rotating bolt 9, when the use length of the needle body 4 needs to be adjusted, when adjusting the length of the needle body 4 outside the rotating member 3 promptly, accessible rotating bolt 9 makes between the needle body 4 and the rotating member 3 not hard up, thereby the accessible sets up the position of the needle body 4 in the second fixed slot 39, in order to adjust the use length of the needle body 4, after the regulation is accomplished, only need again the rotating bolt 9 alright fasten the needle body 4 on the rotating member 3, thereby realized the free adjustment of the use length of the needle body 4.

In a specific implementation process, as shown in fig. 13, a second gasket 10 is disposed between the needle body 4 and the nut 91 of the bolt 9, the second gasket 10 is sleeved on the bolt 9, and the bolt 9 fastens the needle body 4 through the second gasket 10 to ensure that the connection between the needle body 4 and the rotating member 3 is firmer.

In another specific implementation process, as shown in fig. 11, the second end 22 of the connector 2 is provided with an L-shaped groove 25, and the rotating member 3 is disposed in the L-shaped groove 25 through the rotating shaft 8, as shown in fig. 14, when the needle body 4 is used, the needle body 4 is rotated out of the connector 2, and correspondingly, the brush 5 is rotated into the L-shaped groove 25, as shown in fig. 15, when the brush 5 is used, the needle body 4 is rotated into the L-shaped groove 25, and correspondingly, the brush 5 is rotated out of the connector 2, so that the switching is faster, and more convenient, and the use is convenient.

To sum up, this specification discloses a 3D prints husky drawing instrument, with husky required appurtenance integration in an organic whole in the manufacturing process of drawing, solved among the prior art problem that appurtenance is scattered easily to be lost, and can switch appurtenance fast conveniently, it is more convenient to use, and then can promote greatly and draw efficiency, the practicality is strong.

Those of ordinary skill in the art will understand that: the drawings are merely schematic representations of one embodiment, and the elements shown in the drawings are not necessarily required to practice the invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a 3D prints sand painting instrument which characterized in that includes:

an auxiliary sand moving part gathering and collecting sand and moving the sand,

a connecting piece, the auxiliary sand moving piece is arranged at the first end of the connecting piece,

a rotating piece which is rotatably connected with the second end of the connecting piece far away from the auxiliary sand moving piece,

a needle body, one end of the needle tail of the needle body is arranged at the first end of the rotating part,

and the brush is arranged at the second end of the rotating part far away from the needle body.

2. The 3D printing sand painting tool according to claim 1, wherein the first end of the rotating member is rotatably connected with the second end of the connecting member through a screw and a nut.

3. The 3D prints husky drawing instrument of claim 2, characterized in that, be provided with the mounting groove on the first side of connecting piece is kept away from to the first end of rotating member, be provided with first through-hole in the mounting groove, be provided with the second through-hole corresponding with the first through-hole on the second end of connecting piece, the mounting groove is provided with first fixed orifices and first fixed slot respectively along the relative both sides of first direction, first fixed orifices and first fixed slot are located one side of first through-hole, needle tail one end of needle body is followed first direction and is worn to establish first fixed orifices, mounting groove and first fixed slot in proper order, the screw is followed second direction and is worn to establish first through-hole and second through-hole in proper order to it is fixed through the nut, the needle body is fixed in between the nut of screw and the rotating member, wherein, first direction is perpendicular with the second direction.

4. The 3D printing sand painting tool according to claim 3, wherein a first gasket is arranged between the needle body and a nut of the screw, the first gasket is sleeved on the screw, and the screw fastens the needle body through the first gasket.

5. The 3D sand painting tool according to claim 3, wherein a U-shaped groove is formed in the second end of the connecting piece, a first vertical end face of the U-shaped groove is higher than a second vertical end face of the U-shaped groove, the rotating piece is arranged in the U-shaped groove, and one side, close to the auxiliary sand moving piece, of the mounting groove is as high as the second vertical end face.

6. The 3D printing sand painting tool according to claim 1, wherein the auxiliary sand moving piece, the connecting piece and the rotating piece are all 3D printing pieces.

7. The 3D printing sand painting tool of claim 1, wherein the rotating member is rotatably connected to the second end of the connecting member by a rotating shaft.

8. The 3D printing sand painting tool according to claim 7, wherein a rectangular groove is formed in a first side face, away from the connecting piece, of a first end of the rotating piece, a threaded hole is formed in the rectangular groove, a second fixing hole and a second fixing groove are formed in two opposite sides of the rectangular groove in the first direction respectively, the second fixing hole and the second fixing groove are located on one side of the threaded hole, the second fixing hole, the rectangular groove and the second fixing groove are sequentially formed in one end, at the needle tail, of the needle body in a penetrating mode in the first direction, a bolt in threaded fit with the threaded hole is installed in the threaded hole, and the needle body is fixed between a nut of the bolt and the rotating piece.

9. The 3D printing sand painting tool according to claim 8, wherein a second gasket is arranged between the needle body and a nut of the bolt, the second gasket is sleeved on the bolt, and the bolt fastens the needle body through the second gasket.

10. A3D printing sand painting tool according to claim 8, wherein the second end of the connecting piece is provided with an L-shaped groove, and the rotating piece is arranged in the L-shaped groove through the rotating shaft.

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