CN221339602U - Wire feeding device of 3D printer - Google Patents

Abstract

The utility model relates to the technical field of wire feeding devices, in particular to a wire feeding device of a 3D printer, which comprises a mounting disc and a mounting shaft arranged at the center of the mounting disc, wherein a rotatable material disc mounting sleeve is sleeved on the mounting shaft, the material disc is mounted on the material disc mounting sleeve, mounting assemblies for mounting the material disc on the material disc mounting sleeve are arranged at two end parts of the material disc mounting sleeve, and a limiting assembly for limiting the material disc is arranged on the mounting shaft. Through the structure, the tray installation sleeve is rotatably installed on the installation shaft, and the tray is installed on the tray installation sleeve through the installation assembly and the limiting assembly, so that the tray is rotatably installed on the installation shaft.

Description

Wire feeding device of 3D printer

Technical Field

The utility model relates to the technical field of wire feeding devices, in particular to a wire feeding device of a 3D printer.

Background

Currently, 3D printing techniques mainly include four types: light curing molding (SLA), three-dimensional powder bonding (3 DP), selective Laser Sintering (SLS), fused deposition rapid prototyping (FDM). Fused deposition rapid prototyping (FDM), also known as fuse deposition, is the heating of a filament-like hot melt material to melt and to extrude it through a nozzle head with a fine nozzle. And (3) after the hot-melt material (material wire) is melted, spraying the material from a spray head, depositing the material on a printing table panel or a previous layer of solidified material, starting to solidify after the temperature is lower than the solidification temperature, and forming a final finished product through layer-by-layer accumulation of the material.

For example, CN205467368U discloses a foldable wire feeder based on 3D printer of FDM technology, comprising consumable and consumable shaft, wherein the consumable comprises a wire winding disc and consumable wire, and the consumable wire is wound in the center of the wire winding disc; when the device is in actual use, the wire winding disc rotates by virtue of relative sliding between the wire winding disc and the consumable shaft, consumable wires on the wire winding disc enter the 3D printer under the action of the wire feeding motor in the 3D printer, and the wire feeding motor is increased in load due to the fact that larger friction force exists between the wire winding disc and the consumable shaft, so that the wire feeding force of the 3D printer is insufficient easily caused, and the printing effect of the 3D printer is affected.

Disclosure of utility model

In order to solve the technical problems in the background art, the utility model provides a wire feeder of a 3D printer.

The utility model adopts the following technical scheme for realizing the purposes:

The utility model provides a wire feeder of 3D printer, its includes the mounting disc and locates the installation axle of mounting disc central point department, the epaxial cover of installation is equipped with rotatable charging tray installation cover, the charging tray is installed to the charging tray installation on sheathe in, and the both ends department of charging tray installation cover is equipped with and is used for installing the charging tray on the epaxial installation component of charging tray installation, be equipped with on the installation axle and be used for carrying out spacing subassembly to the charging tray.

Preferably, the two ends of the tray mounting sleeve are respectively provided with a bearing mounting groove, and bearings connected with the mounting shaft are arranged in the bearing mounting grooves.

Preferably, annular grooves located at the outer sides of the bearing mounting grooves are formed in the two end portions of the tray mounting sleeve, clamping grooves are formed in the outer side walls of the annular grooves along the axial direction of the annular grooves at intervals, and grooves are formed in the two end portions of the tray, corresponding to the clamping grooves:

The installation component is including locating the bottom ring in the ring channel, correspond the draw-in groove on the bottom ring and be equipped with the fixture block that can buckle, the fixture block is L type and one end stretches into the draw-in groove in setting, threaded connection has the sprue in the ring channel, be equipped with on the side that the sprue stretches into the ring channel and be used for extruding the fixture block and drive its one end and stretch into the extrusion inclined plane in the corresponding recess.

Preferably, the limiting assembly comprises limiting discs which are connected to the mounting shaft in a threaded manner and located at two end portions of the charging tray, and the limiting discs are used for limiting the charging tray to the charging tray mounting sleeve.

Preferably, a plurality of rolling elements which are in rolling connection with the surface of the material tray are uniformly distributed on the side surface of the limit tray facing the material tray along the circumferential direction of the limit tray.

Preferably, a protective cover sleeved outside the material tray is arranged outside the mounting shaft, and a notch extending out of the material supply wire is arranged on the protective cover along the axial direction of the protective cover.

Preferably, one end of the protective cover is opened, the installation shaft penetrates through the protective cover, the opening end of the protective cover is overlapped outside the installation disc, and a nut for installing the protective cover on the installation shaft is connected to the installation shaft through threads.

In summary, the utility model has the following beneficial effects:

1. According to the utility model, through the arrangement of the mounting shaft, the tray mounting sleeve, the tray mounting assembly and the limiting assembly, the tray mounting sleeve is rotatably mounted on the mounting shaft, and the tray is mounted on the tray mounting sleeve through the mounting assembly and the limiting assembly, so that the rotation mounting of the tray on the mounting shaft is preferably realized.

2. According to the utility model, through the arrangement of the bearing mounting groove and the bearing, the friction between the tray mounting sleeve and the mounting shaft is preferably reduced, so that the rotation of the tray is facilitated, and the load of the wire feeding motor is reduced.

3. According to the utility model, through the arrangement of the limiting disc and the rolling piece, the friction force in the rotation process of the material disc is reduced, the rotation of the material disc is facilitated, and the resistance of wire feeding is reduced.

Drawings

FIG. 1 is a schematic diagram of a 3D printer wire feeder according to the present utility model;

FIG. 2 is a schematic cross-sectional view of a wire feeder of a 3D printer according to the present utility model;

fig. 3 is an enlarged view of the utility model at a in fig. 2.

FIG. 4 is a schematic view of an exploded structure of the spacing disc, the blocking piece and the bottom ring of the present utility model.

Fig. 5 is a schematic view of the structure of the tray mounting cover in the present utility model.

Reference numerals illustrate:

100. A protective cover; 101. a notch; 110. a nut; 200. a mounting plate; 201. a mounting shaft; 210. a tray mounting sleeve; 211. an annular groove; 220. a material tray; 230. a limiting disc; 311. a bearing mounting groove; 312. an annular groove; 313. a clamping groove; 321. a groove; 330. a bottom ring; 331. a clamping block; 341. extruding the inclined plane; 410. a rolling member.

Detailed Description

For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

The present utility model is described in further detail below with reference to fig. 1-5.

The embodiment of the utility model discloses a wire feeder of a 3D printer.

As shown in fig. 1 and 2, a wire feeder of a 3D printer in this embodiment includes a mounting disc 200 and a mounting shaft 201 disposed at a central position of the mounting disc 200, a rotatable tray mounting sleeve 210 is sleeved on the mounting shaft 201, a tray 220 is mounted on the tray mounting sleeve 210, mounting assemblies for mounting the tray 220 on the tray mounting sleeve 210 are disposed at two ends of the tray mounting sleeve 210, and a limiting assembly for limiting the tray 220 is disposed on the mounting shaft 201.

In this embodiment, a material rack for installing the material tray 220 is configured between the installation tray 200 and the installation shaft 201, and when the material rack is in actual use, the material wire is wound on the material tray 220, the installation tray 200 is fixedly connected to the side wall of the 3D printer shell through a screw, and under the action of a wire feeding motor in the 3D printer, the material wire moves to drive the material tray 220 to rotate around the installation shaft 201, so as to perform wire feeding operation;

The tray 220 is preferably mounted on the tray mounting sleeve 210 through the arrangement of the tray mounting sleeve 210, the mounting assembly and the limiting assembly, namely, the tray 220 is rotatably mounted on the mounting shaft 201; in actual use, bearing mounting grooves 311 are formed at two end parts of the tray mounting sleeve 210, bearings (not shown in the figure) are fixedly mounted in the bearing mounting grooves 311, inner rings of the bearings are fixedly connected with the mounting shaft 201, and the tray mounting sleeve 210 is preferably rotatably mounted on the mounting shaft 201 by utilizing bearing rotation connection; meanwhile, due to the arrangement of the bearings, rolling friction can be formed between the material tray mounting sleeve 210 and the mounting shaft 201, friction force between the material tray mounting sleeve and the mounting shaft is reduced, and compared with the traditional connection mode of relative sliding between the wire coiling tray and the consumable shaft, the connection mode can reduce friction force and facilitate rotation of the material tray 220, so that the load of the wire feeding motor and the torque requirement on the wire feeding motor are reduced, and the production cost is reduced;

In actual use, in order to reduce the dead weight of the tray mounting sleeve 210, the annular groove 211 is disposed at the middle position of the tray mounting sleeve 210, so as to reduce the overall weight of the wire feeder, thereby playing a role in reducing the load of the wire feeder.

Referring to fig. 3-5, in this embodiment, annular grooves 312 located at the outer sides of the bearing mounting grooves 311 are formed at both ends of the tray mounting sleeve 210, clamping grooves 313 are formed on the outer side walls of the annular grooves 312 along the axial direction at intervals, and grooves 321 are formed at both ends of the tray 220 corresponding to the clamping grooves 313:

The installation component is including locating the bottom ring 330 in the ring channel 312, correspond draw-in groove 313 on the bottom ring 330 and be equipped with the fixture block 331 of buckling, fixture block 331 is L and one end stretches into the setting in the draw-in groove 313, ring channel 312 female connection has the shutoff piece 340, be equipped with on the side that the shutoff piece 340 stretches into in the ring channel 312 and be used for extruding fixture block 331 and drive its one end and stretch into the extrusion inclined plane 341 in the corresponding recess 321.

In this embodiment, the annular groove 312 and the bearing mounting groove 311 are coaxially disposed, one end of the L-shaped clamping block 331 extends into the clamping groove 313, and the other end is fixedly connected to the bottom ring 330, and when in actual use, a side wall of the clamping block 331 connected to the bottom ring 330 is bendable, which maintains the state of the clamping block 331 in the clamping groove 313 in one end in a natural state;

Wherein, the blocking block 340 is screwed in the annular groove 312, so that the blocking block can block the opening of the annular groove 312, thereby the bottom ring 330 and the clamping block 331 are integrally arranged in the annular groove 312;

the arrangement of the extrusion inclined plane 341 makes the extrusion inclined plane 341 capable of extruding the clamping block 331 to bend during the process of screwing the blocking block 340 into the annular groove 312 in actual use, and further drives one end of the clamping block 331 positioned in the clamping groove 313 to be clamped into the corresponding groove 321, thereby realizing connection between the tray 220 and the tray mounting sleeve 210 and facilitating synchronous rotation between the tray 220 and the tray mounting sleeve;

In this embodiment, since the two ends of the tray mounting sleeve 210 are provided with the mounting assemblies, the connection between the tray 220 and the tray mounting sleeve 210 is more stable, so that the rotation of the tray 220 on the mounting shaft 201 is more stable.

Referring to fig. 4, in this embodiment, the limiting assembly includes limiting plates 230 screwed on the mounting shaft 201 and located at two ends of the tray 220, where the limiting plates 230 are used to limit the tray 220 on the tray mounting sleeve 210.

In this embodiment, through the setting of the limiting disc 230, the limiting disc 230 can limit the charging disc 220 in the axial direction of the mounting shaft 201, and the charging disc 220 is limited on the charging disc mounting sleeve 210 even if the charging disc 220 is mounted on the charging disc mounting sleeve 210, wherein a protruding portion 411 is formed on a side surface of the limiting disc 230 away from the charging disc 220 in a protruding manner, and the threaded fit between the limiting disc 230 and the mounting shaft 201 can be increased by using the protruding portion 411, so that the threaded connection of the limiting disc 230 on the mounting shaft 201 is more stable.

In this embodiment, a plurality of rolling members 410 rolling and connected to the surface of the tray 220 are uniformly disposed on the side of the limiting tray 230 facing the tray 220 along the circumferential direction thereof.

In this embodiment, the rolling element 410 is a universal ball, wherein the universal ball can roll on the corresponding surface of the tray 220, which can preferably reduce the friction between the limiting plate 230 and the corresponding side of the tray 220, thereby facilitating the rotation of the tray 220 and reducing the wire feeding resistance.

As shown in fig. 1 and 2, in this embodiment, a protective cover 100 is disposed outside the mounting shaft 201 and is sleeved outside the tray 220, and a notch 101 extending from the feed wire is disposed on the protective cover 100 along the axial direction thereof.

In this embodiment, the protection cover 100 can protect the tray 220 from being wetted and polluted by dust, and is preferably convenient for the extension of the wire through the notch 101.

In this embodiment, one end of the protection cover 100 is opened, the installation shaft 201 is disposed through the protection cover 100, the opening end of the protection cover 100 is overlapped outside the installation plate 200, and the installation shaft 201 is screwed with the nut 110 for installing the protection cover 100 on the installation shaft 201.

Through the construction in this embodiment, the opening of the protection cover 100 is lapped on the outer side surface of the mounting disc 200, and the mounting shaft 201 penetrates the protection cover 100 and is limited by the nut 110, so that the installation of the protection cover 100 on the material rack is preferably realized, and meanwhile, the protection cover 100 does not interfere with the rotation of the material disc 220, so that the wire feeding operation is facilitated.

Working principle: the tray 220 is sleeved on the tray mounting sleeve 210, the bottom ring 330 and the clamping blocks 331 are arranged in the corresponding annular grooves 312, the blocking blocks 340 are screwed to push the clamping blocks 331 to extend into the corresponding grooves 321, then the limiting plates 230 on two sides of the tray 220 are screwed to enable the rolling elements 410 on the limiting plates to be attached to the surface of the tray 220, the tray 220 is fixed on the mounting shaft 201, then the mounting plate 200 is fixed on the side wall of the 3D printer shell, and the protective cover 100 is mounted outside the tray 220 through the nuts 110 to protect the same.

In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.

Claims (7)

1. Wire feeder of 3D printer, its characterized in that: including mounting disc (200) and locate installation axle (201) of mounting disc (200) central point department, the cover is equipped with rotatable charging tray installation cover (210) on installation axle (201), install charging tray (220) on charging tray installation cover (210), both ends department of charging tray installation cover (210) is equipped with and is used for installing the installation subassembly on charging tray installation cover (210) with charging tray (220), be equipped with on installation axle (201) and be used for carrying out spacing subassembly to charging tray (220).

2. The wire feeder of a 3D printer of claim 1, wherein: both ends of the tray installation sleeve (210) are respectively provided with a bearing installation groove (311), and bearings connected with the installation shaft (201) are arranged in the bearing installation grooves (311).

3. The wire feeder of a 3D printer of claim 2, wherein: annular grooves (312) located at the outer sides of the bearing mounting grooves (311) are formed in the two end portions of the material tray mounting sleeve (210), clamping grooves (313) are formed in the outer side walls of the annular grooves (312) at intervals along the axial direction of the annular grooves, and grooves (321) are formed in the two end portions of the material tray (220) corresponding to the clamping grooves (313):

The installation component is including locating the bottom ring (330) in ring channel (312), correspond draw-in groove (313) on bottom ring (330) and be equipped with fixture block (331) that can buckle, fixture block (331) are L type and one end and stretch into setting in draw-in groove (313), ring channel (312) female connection has sprue (340), be equipped with on the side that sprue (340) stretched into in ring channel (312) and be used for extrudeing fixture block (331) and drive extrusion inclined plane (341) that its one end stretched into in corresponding recess (321).

4. The wire feeder of a 3D printer of claim 1, wherein: the limiting assembly comprises limiting discs (230) which are connected to the mounting shaft (201) in a threaded mode and located at two ends of the charging tray (220), and the limiting discs (230) are used for limiting the charging tray (220) to the charging tray mounting sleeve (210).

5. The wire feeder of a 3D printer of claim 4, wherein: the side surface of the limiting disc (230) facing the charging tray (220) is uniformly provided with a plurality of rolling elements (410) which are connected to the surface of the charging tray (220) in a rolling way along the circumferential direction of the side surface.

6. The wire feeder of a 3D printer of claim 1, wherein: the installation shaft (201) is externally provided with a protective cover (100) sleeved outside the material tray (220), and the protective cover (100) is axially provided with a notch (101) from which a material supply wire extends.

7. The wire feeder of a 3D printer of claim 6, wherein: one end of the protective cover (100) is provided with an opening, the installation shaft (201) penetrates through the protective cover (100), the opening end of the protective cover (100) is overlapped outside the installation disc (200), and the installation shaft (201) is connected with a nut (110) for installing the protective cover (100) on the installation shaft (201) in a threaded manner.