CN216032510U

CN216032510U - Wire feeding device and 3D printer

Info

Publication number: CN216032510U
Application number: CN202121114572.4U
Authority: CN
Inventors: 刘辉林; 陈春; 王子建
Original assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Current assignee: Shenzhen Chuangxiang 3D Technology Co Ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2022-03-15
Anticipated expiration: 2031-05-24

Abstract

The utility model relates to a wire feeding device and a 3D printer comprising the same. The wire feeding device comprises a first driving piece, a second driving piece, a first pressing mechanism and a second pressing mechanism; the first pressing mechanism comprises a plurality of first pressing pieces arranged at intervals along a first direction, and the first pressing pieces are arranged at intervals along the circumferential direction of the first driving piece; the second pressing mechanism is matched with one of the first pressing pieces to clamp the wire; so that the second pressing mechanism can drive the wire to move when rotating. The first pressing mechanism is driven by the first driving piece to rotate different angles, so that the first pressing piece corresponding to the angle can be matched with the second pressing mechanism to clamp wires corresponding to colors, and the function of switching to the wires of different colors is realized. This wire drive feed unit can realize the printing of multiple colour through first driving piece and second driving piece, need not to be equipped with the driving piece that corresponds the figure to save space greatly, promote space utilization, and reduce manufacturing cost.

Description

Wire feeding device and 3D printer

Technical Field

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

Background

The 3D printing process generally uses thermoplastic materials, such as wax, ABS plastic (terpolymer of three monomers, acrylonitrile (a), butadiene (B), styrene (S)), nylon, etc., to feed in filament form, a heating head heats the hot melt material to a critical state, exhibiting semifluid properties, and a nozzle extrudes the material in a semifluid state along a two-dimensional geometric information motion trajectory determined by CAD under computer control, and solidifies to form a thin layer in a profile shape. And after one layer is finished, lowering the newly formed layer through the vertical lifting system, and curing. Thus, the three-dimensional solid of the part is formed from bottom to top by stacking and bonding layer by layer.

If the existing 3D printing wire feeding device is used for printing in multiple colors, a corresponding number of extruding motors are required to be equipped, and the purposes of wire changing and wire feeding are achieved. The extrusion motors are too many, so that the problems of large occupied space and increased manufacturing cost exist.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a wire feeding device that solves the above problems, in order to solve the problems of the existing wire feeding device, such as large occupied space and high processing cost.

A wire feeding device comprises a first driving piece, a second driving piece, a first pressing mechanism and a second pressing mechanism;

the first driving piece and the second driving piece are arranged at intervals along a third direction, and the first pressing mechanism and the second pressing mechanism are arranged at intervals along the third direction; the first pressing mechanism comprises a plurality of first pressing pieces arranged at intervals along a first direction, and the first pressing pieces are arranged at intervals along the circumferential direction of the first driving piece; an output shaft of the first driving piece is connected with the first pressing mechanism, and the first driving piece is used for driving the first pressing mechanism to rotate around the axis of the first pressing mechanism, so that the second pressing mechanism is selected to be matched with the first pressing piece to clamp the wires;

an output shaft of the second driving piece is connected with the second pressing mechanism, and the second driving piece is used for driving the second pressing mechanism to rotate around the axis of the second pressing mechanism so as to drive the wire to move along a second direction; the first direction, the second direction and the third direction are arranged at an angle with each other.

In one embodiment, the first pressing mechanism further includes a first transmission shaft connected to the output shaft of the first driving member, and a plurality of mounting plates mounted on the first transmission shaft, the mounting plates being spaced apart in the first direction and arranged along the circumferential direction of the first driving member, and one first pressing member being mounted on each of the mounting plates.

In one embodiment, the first pressing member includes a first pressing wheel, the first pressing wheel is provided with an annular groove along the circumferential direction of the first pressing wheel, and the annular groove and the second pressing mechanism form an extrusion space.

In one embodiment, the second pressing mechanism comprises a second transmission shaft connected to the output shaft of the second driving member and a plurality of gears mounted to the second transmission shaft, each of the gears being arranged in the first direction, the gears cooperating with the first pressing member to clamp the wire.

In one embodiment, the gear is provided with a wire guide groove, the wire guide groove can accommodate part of the wires, and the wires can be abutted against the groove wall of the wire guide groove.

In one embodiment, the wire feeder further comprises a housing, the first driving member and the second driving member are both mounted on the housing, and the first pressing mechanism and the second pressing mechanism are both accommodated in the housing.

In one embodiment, the housing is provided with a thread inlet and a thread outlet at two opposite sides along the second direction.

In one embodiment, a transition block is mounted to an end of the housing adjacent the wire inlet through which the wire passes.

In one embodiment, a first guide bearing is mounted on one end of the first transmission shaft penetrating through the shell; and a second guide bearing is arranged at one end of the second transmission shaft penetrating through the shell.

In one embodiment, the wire feeder further comprises a first coupling, and the first transmission shaft is connected with the output shaft of the first driving member through the first coupling;

the wire feeding device further comprises a second coupling, and the second transmission shaft is connected with the output shaft of the second driving piece through the second coupling.

The utility model also provides a 3D printer which can solve at least one technical problem.

A 3D printer comprising a wire feeder as described above.

The technical scheme has the following beneficial effects: the wire feeding device comprises a first driving piece, a second driving piece, a first pressing mechanism and a second pressing mechanism; the first driving piece and the second driving piece are arranged at intervals along the third direction, and the first pressing mechanism and the second pressing mechanism are arranged at intervals along the third direction; the first pressing mechanism comprises a plurality of first pressing pieces arranged at intervals along a first direction, and the first pressing pieces are arranged at intervals along the circumferential direction of the first driving piece; an output shaft of the first driving piece is connected with the first pressing mechanism, and the first driving piece is used for driving the first pressing mechanism to rotate around the axis of the first pressing mechanism so that the second pressing mechanism selects one of the second pressing mechanisms to be matched with the first pressing piece to clamp the wires; the output shaft of the second driving piece is connected with the second pressing mechanism, and the second driving piece is used for driving the second pressing mechanism to rotate around the axis of the second driving piece so as to drive the wire to move along the second direction.

A first silk material that compresses tightly a corresponding colour, because a plurality of first compressing tightly the piece and set up along the circumference of first driving piece respectively, consequently rotate different angles through the first hold-down mechanism of first driving piece drive for the first compressing tightly piece that corresponds the angle can the butt in the silk material along self radial one end, realizes switching to the function of the silk material of different colours. When the wires of the first color need to be used, the first driving piece drives the first pressing mechanism to rotate to a first angle, so that the wires are clamped through the corresponding first pressing piece and the second pressing mechanism. When the second driving piece drives the second pressing mechanism to rotate around the axis of the second driving piece, the second pressing mechanism and the wire material have friction force, so that the wire material can be driven to move along the rotating direction of the second pressing mechanism when the second pressing mechanism rotates, and the wire feeding function is realized. When a second type of wire material needs to be used, the first pressing mechanism is driven by the first driving piece to rotate to a second angle, so that the second type of wire material is clamped by the corresponding first pressing piece and the second pressing mechanism, the second pressing mechanism is driven by the second driving piece to rotate, and the wire feeding of the second type of wire material is realized. This wire drive feed unit can realize the printing of multiple colour through first driving piece and second driving piece, need not to be equipped with the driving piece that corresponds the figure to save space greatly, promote space utilization, and reduce manufacturing cost.

The 3D printer provided by the utility model comprises the wire feeding device, and printing of multiple colors can be realized by only arranging two driving pieces, so that the space utilization rate can be greatly improved, and the processing and manufacturing cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a wire feeding device according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the wire feeder of FIG. 1;

FIG. 3 is a schematic view of the wire feeder of FIG. 2 shown in a first view;

FIG. 4 is a schematic view of the wire feeder of FIG. 2 shown in a second viewing angle.

Reference numerals: 10-a wire feeder; 100-a first driving member; 200-a second driving member; 300-a first hold-down mechanism; 310-a first compression member; 311-a first pinch roller; 3111-ring channel; 320-a first transmission shaft; 330-a mounting plate; 400-a second hold-down mechanism; 410-gear; 411-a thread guide groove; 420-a second drive shaft; 500-a housing; 510-a transition block; 520-a first guide bearing; 530-a second guide bearing; 600-a first coupling; 700-a second coupling; 1000-wire.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As described in the background art, in order to realize printing of multiple colors, the existing multicolor printer needs to set a corresponding number of extrusion motors, and the number of the extrusion motors is too large, which not only increases the occupied space, but also increases the manufacturing cost, thereby affecting the user experience.

Based on this, the utility model provides a 3D printer (not shown), the 3D printer includes a wire feeding device 10, the wire feeding device 10 can realize printing of multiple colors only by setting two driving members, and there is no need to equip driving members with corresponding numbers, so that the space utilization of the 3D printer can be greatly improved, and the manufacturing cost can be reduced. The wire feeding device will be described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of a wire feeding device according to an embodiment of the present invention, and fig. 2 is a schematic partial structural diagram of the wire feeding device shown in fig. 1, where the layout view of fig. 2 is taken as an example, a first direction is an X direction, a second direction is a Y direction, and a third direction is a Z direction. As shown in fig. 1 and 2, the wire feeder 10 includes a first driving member 100, a second driving member 200, a first pressing mechanism 300, and a second pressing mechanism 400; the first driving member 100 and the second driving member 200 are arranged at intervals along the Z direction, and the first pressing mechanism 300 and the second pressing mechanism 400 are arranged at intervals along the Z direction; the first pressing mechanism 300 includes a plurality of first pressing members 310 arranged at intervals in the X direction, and each first pressing member 310 is arranged at intervals in the circumferential direction of the first driving member 100; an output shaft of the first driving member 100 is connected with the first pressing mechanism 300, and the first driving member 100 is used for driving the first pressing mechanism 300 to rotate around the axis thereof, so that the second pressing mechanism 400 is selected to be matched with the first pressing member 310 to clamp the wire 1000; the output shaft of the second driving member 200 is connected to the second pressing mechanism 400, and the second driving member 200 is used for driving the second pressing mechanism 400 to rotate around its axis, so as to drive the filament material 1000 to move along the Y direction.

In the present embodiment, taking printing six colors as an example, the wire feeder 10 includes six first pressing members 310, an angle formed between two adjacent first pressing members 310 is sixty degrees, and each first pressing member 310 corresponds to one color of the wire 1000. Because six first compressing pieces 310 are arranged along the circumference of the first driving piece 100 respectively, the first compressing mechanism 300 is driven by the first driving piece 100 to rotate by different angles, so that the first compressing pieces 310 corresponding to the angles can be abutted to one end of the wire material 1000 along the radial direction of the wire material, and the function of wire replacement is realized. The initial position before the first driving member 100 rotates is recorded as 0 °, the first color of the filament 1000 rotates 60 ° corresponding to the first driving member 100, the second color rotates 120 ° corresponding to the first driving member 100, and so on. For example, when it is required to use the filament 1000 of the first color, the first driving member 100 drives the first pressing mechanism 300 to rotate 60 ° from the initial position, so that the filament 1000 is clamped by the first pressing member 310 and the second pressing mechanism 400 at corresponding angles. When the second driving member 200 drives the second pressing mechanism 400 to rotate clockwise, the second pressing mechanism 400 and the filament 1000 have friction, so that the second pressing mechanism 400 rotates clockwise, the filament 1000 is driven to move along the Y direction shown in fig. 2, and the filament feeding function is realized. This wire drive feed unit 10 realizes trading the mesh of silk through first driving piece 100, realizes sending a silk through second driving piece 200, and the printing of multiple colour can be realized to cooperation first hold-down mechanism 300 and second hold-down mechanism 400, need not to be equipped with six driving pieces to save space greatly, promote space utilization, and reduce manufacturing cost. The number of the first pressing members 310 corresponds to the actual total amount of printing colors, and in other alternative embodiments, three first pressing members 310 may be correspondingly arranged for three-color printing.

FIG. 3 is a schematic view of the wire feeder 10 shown in FIG. 2 at a first viewing angle, and FIG. 4 is a schematic view of the wire feeder 10 shown in FIG. 2 at a second viewing angle. As shown in fig. 2 and 3, further, the first pressing mechanism 300 further includes a first transmission shaft 320 connected to the output shaft of the first driving member 100, and a plurality of mounting plates 330 mounted to the first transmission shaft 320, the mounting plates 330 being spaced apart in the X direction and arranged in the circumferential direction of the first driving member 100, as shown in fig. 4, so that the first pressing mechanism 300 assumes a six-split shape. Specifically, the first transmission shaft 320 is connected to the output shaft of the first driving member 100 through the first coupling 600, so as to ensure the synchronism of the movement of the output shaft of the first driving member 100 and the first transmission shaft 320, further drive the mounting plates 330 to rotate synchronously to the corresponding angles, and ensure the stability of the wire changing process. A first pressing member 310 is correspondingly installed at an end of a mounting plate 330 away from the first transmission shaft 320, on one hand, in order to ensure that the first pressing member 310 can abut against the wire 1000, and on the other hand, the mounting plate 330 can be prevented from interfering with the second pressing mechanism 400 during the rotation process, thereby ensuring the operational reliability of the wire feeding device 10. In another embodiment, the first pressing mechanism 300 may be a stepped mounting base, and a plurality of first pressing members 310 may be mounted on the mounting base at intervals in the X direction and the circumferential direction.

As shown in fig. 2, in an embodiment, the first pressing member 310 may be specifically a first pressing wheel 311, a mounting shaft is disposed on a side of the mounting plate 330 close to the first pressing wheel 311, the first pressing wheel 311 is mounted on the mounting shaft, and the first driving member 100 and the second driving member 200 may be driving motors. First pinch roller 311 has seted up ring channel 3111 along self circumference, and ring channel 3111 forms the extrusion space with second hold-down mechanism 400. Because annular groove 3111 has been seted up on first pinch roller 311 surface for silk material 1000 can the joint in annular groove 3111, thereby avoid silk material 1000 to take place from the condition that first pinch roller 311 surface breaks away from at the removal in-process, guarantee to send an in-process, first pinch roller 311 can both compress tightly silk material 1000, can realize sending a function with second hold-down mechanism 400 cooperation. The first pinch roller 311 may be a bearing or a roller.

As shown in fig. 2 and 3, in an alternative embodiment, the second driving member 200 has a second output shaft, the second pressing mechanism 400 includes a second transmission shaft 420 connected to the second output shaft and a plurality of gears 410 mounted to the second transmission shaft 420, the number of the gears 410 corresponds to the number of the first pressing members 310, and each of the gears 410 is arranged in the X direction such that the gear 410 can cooperate with the corresponding first pressing member 310 to clamp the wire 1000. Specifically, the wire feeder 10 further includes a second coupling 700, the second transmission shaft 420 is connected to the second output shaft through the second coupling 700, and the second output shaft and the second transmission shaft 420 are synchronized by the second coupling 700, so that the second transmission shaft 420 can be driven to rotate by the second driving member 200. Gear 410 has gear 410 axle, and second transmission shaft 420 is located to the gear 410 axle sleeve to gear 410 is epaxial to be provided with the mounting hole, and first locking piece passes the mounting hole and is connected with second transmission shaft 420, guarantees gear 410 and second transmission shaft 420's stability of being connected, and then makes the second rotating shaft drive gear 410 rotate, realizes sending the function of silk. In other embodiments, the second transmission shaft 420 can also be sleeved on the second output shaft and locked by the second locking member.

In another embodiment, as shown in fig. 3, a guide wire slot 411 is formed on the gear 410. Because the silk guide slot 411 can accommodate part of the silk material 1000, when the silk material is fed initially, the silk threading can be realized without increasing the distance between the gear 410 and the first pressing piece 310, after the silk material 1000 passes through the silk guide slot 411, the second driving piece 200 drives the gear 410 to rotate, and then the silk material 411 can be rotated to other positions, so that the silk material 1000 is clamped and arranged on the first pressing piece 310 and the gear 410.

Referring to fig. 1, in one embodiment, the wire feeding device 10 further includes a rectangular housing 500, the housing 500 is provided with a mounting groove, the first driving member 100 and the second driving member 200 are mounted on the housing 500 through the mounting groove, and the first transmission shaft 320, the mounting plate 330, the first pinch roller 311, the second transmission shaft 420, the gear 410, and the like are all accommodated in the housing 500, so as to prevent external dust or impurities from falling into the gear 410 and the bearing, which affects the function implementation of wire feeding and wire changing, and ensure the transmission precision. Further, a first guide bearing 520 is installed at one end of the first transmission shaft 320, which is far away from the first driving member 100, which penetrates through the casing 500, and a second guide bearing 530 is installed at one end of the second transmission shaft 420, which is far away from the second driving member 200, which penetrates through the casing 500, so as to support and guide the rotation of the first transmission shaft 320 and the second transmission shaft 420, prevent the first transmission shaft 320 and the second transmission shaft 420 from shaking in the rotation process, and further ensure the accuracy and stability of the transmission.

Further, the casing 500 has a yarn inlet and a yarn outlet respectively formed at opposite sides thereof along the Y direction. The wire 1000 successively passes through the wire inlet and the wire outlet, so that the hole walls of the wire inlet and the wire outlet can both support and guide the wire 1000, and the wire 1000 is prevented from being bent to influence the normal wire feeding function.

As shown in fig. 1, in this embodiment, a transition block 510 is installed at one end of the housing 500 close to the screw inlet, specifically, a screw thread is provided on the transition block 510, a screw hole is provided on the housing 500, and the transition block 510 is screwed to the housing 500 for installation. Because the transition block 510 is arranged at the wire inlet, the wire 1000 is in a pressed state after passing through the transition block 510, the wire 1000 is ensured to be in a straight state in the wire feeding process, and the phenomena of wire bending and the like are prevented.

In the wire feeding device 10, since the housing 500 is provided with the wire inlet and the wire outlet and the guide slot 411 is provided on the gear 410, the wire 1000 can easily pass through the corresponding hole when the wire 1000 is initially fed into the housing 500. Because first pinch roller 311 sets up along the length direction interval of first transmission shaft 320, and sets up along the circumference of first transmission shaft 320, therefore when first driving piece 100 drive first transmission shaft 320 rotated different angles, can drive the mounting panel 330 of installation on first transmission shaft 320 and install the rotation of first pinch roller 311 on mounting panel 330 for the first pinch roller 311 that corresponds the angle can press from both sides the silk material 1000 that corresponds the colour with the cooperation of gear 410, realizes switching to the function of the silk material 1000 of different colours. The second driving part 200 drives the second transmission shaft 420 to rotate, so as to drive the gear 410 mounted on the second transmission shaft 420 to synchronously rotate, and because the gear 410 and the wire material 1000 have friction force, the gear 410 can drive the wire material 1000 to move along the rotation direction thereof when rotating, thereby realizing the wire feeding function. And through setting up the shaft coupling, guarantee that the turned angle of driving piece is unanimous with the turned angle of transmission shaft to guarantee the accuracy of trading the silk. Through setting up direction bearing to play support and guide effect to the transmission shaft, guarantee driven stationarity. When needs realize the polychrome and print, only need be equipped with corresponding number first pinch roller 311 and mounting panel 330 to can realize the printing of multiple colour through first driving piece 100 and second driving piece 200, need not to be equipped with the driving piece that corresponds the number, thereby save space greatly, promote space utilization, reduce the drive requirement of mainboard, and reduce manufacturing cost.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A wire feeder is characterized by comprising a first driving piece (100), a second driving piece (200), a first pressing mechanism (300) and a second pressing mechanism (400);

the first driving piece (100) and the second driving piece (200) are arranged at intervals along a third direction, and the first pressing mechanism (300) and the second pressing mechanism (400) are arranged at intervals along the third direction;

the first pressing mechanism (300) comprises a plurality of first pressing pieces (310) arranged at intervals in a first direction, and the first pressing pieces (310) are arranged at intervals in the circumferential direction of the first driving piece (100);

an output shaft of the first driving piece (100) is connected with the first pressing mechanism (300), and the first driving piece (100) is used for driving the first pressing mechanism (300) to rotate around the axis of the first driving piece so that the second pressing mechanism (400) selects to be matched with the first pressing piece (310) to clamp the wires (1000);

an output shaft of the second driving piece (200) is connected with the second pressing mechanism (400), and the second driving piece (200) is used for driving the second pressing mechanism (400) to rotate around the axis of the second driving piece so as to drive the wire (1000) to move along a second direction; the first direction, the second direction and the third direction are arranged at an angle with each other.

2. The wire feeder of claim 1, wherein the first clamping mechanism (300) further comprises a first transmission shaft (320) connected to the output shaft of the first driving member (100) and a plurality of mounting plates (330) mounted to the first transmission shaft (320), wherein the mounting plates (330) are spaced apart in the first direction and arranged along the circumferential direction of the first driving member (100), and one first clamping member (310) is mounted to each of the mounting plates (330).

3. The wire feeder according to claim 2, wherein the first pressing member (310) comprises a first pressing wheel (311), the first pressing wheel (311) is circumferentially provided with an annular groove (3111), and the annular groove (3111) and the second pressing mechanism (400) form a pressing space.

4. The wire feeder of claim 2, wherein the second clamping mechanism (400) comprises a second drive shaft (420) coupled to the output shaft of the second drive member (200) and a plurality of gears (410) mounted to the second drive shaft (420), each gear (410) being arranged in the first direction, the gears (410) cooperating with the first clamping member (310) to clamp the wire (1000).

5. The wire feeder according to claim 4, wherein the gear (410) is provided with a wire guide groove (411), and the wire guide groove (411) can accommodate a part of the wire (1000).

6. The wire feeder of claim 4, further comprising a housing (500), wherein the first drive member (100) and the second drive member (200) are both mounted to the housing (500), and wherein the first pinch mechanism (300) and the second pinch mechanism (400) are both housed in the housing (500).

7. The wire feeder according to claim 6, wherein the housing (500) has a wire inlet and a wire outlet at opposite sides along the second direction.

8. The wire feeder of claim 7, wherein a transition block (510) is mounted to an end of the housing (500) proximate the wire inlet, the wire (1000) passing through the transition block (510).

9. The wire feeder of claim 6, wherein the first drive shaft (320) mounts a first guide bearing (520) through one end of the housing (500); and a second guide bearing (530) is arranged at one end of the second transmission shaft (420) which penetrates through the shell (500).

10. A 3D printer, characterized by comprising a wire feeder (10) according to any one of claims 1 to 9.