CN214354202U

CN214354202U - Double-gear wire feeding mechanism

Info

Publication number: CN214354202U
Application number: CN202023096936.9U
Authority: CN
Inventors: 陈亮
Original assignee: Zhejiang Weibin Three Dimensional Technology Co ltd
Current assignee: Zhejiang Weibin Three Dimensional Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-10-08
Anticipated expiration: 2030-12-21

Abstract

The utility model relates to a 3D printer accessory field discloses double gear thread feeding mechanism, and it includes the base, is equipped with the gear mounting groove on the base, still includes the drive wheel, and the drive wheel can be at the gear mounting groove internal rotation, installs the cantilever on the base, installs the pinch roller on the cantilever, and the pinch roller is located the gear mounting groove, is equipped with first annular knurl impressed watermark and second annular knurl impressed watermark on drive wheel and the pinch roller respectively, and first annular knurl impressed watermark and second annular knurl impressed watermark mutually support and drive the silk thread removal at rotatory in-process. The utility model has the advantages that the knurling processing at the wire feeding position can avoid the slipping phenomenon of the printing wire in the wire feeding process; the design of the wire guide pipe is used, so that the wire guide pipe and the wire feeding gear have no clearance; this application not only has saved the space through more reasonable structure, and reduce cost has also increased work efficiency.

Description

Double-gear wire feeding mechanism

Technical Field

The utility model relates to a 3D printer accessory field has especially related to double gear thread feeding mechanism.

Background

The 3D printing technology began in the middle of the 90 s of the last century, and the Fused Deposition Modeling (FDM) technology has been widely used because of its many advantages, such as simple structure, easy availability of the materials used, low manufacturing cost, etc. A3D printer using Fused Deposition Modeling (FDM) heats and melts filamentous hot melt materials, meanwhile, a nozzle selectively coats the materials on a workbench under the control of a computer according to sectional profile information, a layer of section is formed after the materials are rapidly cooled, and after the formation of one layer is finished, a machine workbench descends by one height (namely, the layered thickness) to form the next layer until the whole solid modeling is formed. One mode is a short-range wire feeding mode, namely a wire feeding motor is generally arranged right above a nozzle and is very close to the nozzle, and the wire feeding motor moves along with a printing head; the other is a remote wire feed mode in which the wire feed motor is located a significant distance from the nozzle and is no longer fixed to the nozzle, and the wire feed motor is typically fixed to an external frame. In any wire feeding mode, the problems of unsmooth wire feeding, inaccurate wire feeding amount and the like often occur in the printing process.

SUMMERY OF THE UTILITY MODEL

The utility model discloses shortcoming to among the prior art provides double gear thread feeding mechanism.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

double gear wire feeding mechanism, including the base, be equipped with the gear mounting groove on the base, still include the drive wheel, the drive wheel can be at the gear mounting inslot internal rotation, installs the cantilever on the base, installs the pinch roller on the cantilever, and the pinch roller is located the gear mounting groove, is equipped with first annular knurl impressed watermark and second annular knurl impressed watermark on drive wheel and the pinch roller respectively, and first annular knurl impressed watermark and second annular knurl impressed watermark mutually support and drive the silk thread at rotatory in-process and remove.

Preferably, the first knurled patterns comprise a plurality of parallel inclined ribs, the inclined ribs form an included angle of 30-50 degrees with the axial direction of the driving wheel, the second knurled patterns are provided with a plurality of inclined concave patterns matched with the inclined ribs, a plurality of anti-skid convex points are arranged in the inclined concave patterns, and the height of the anti-skid convex points is smaller than the depth of the inclined concave patterns.

Preferably, the cantilever is provided with an upper mounting hole, the base is provided with a lower mounting hole, and the base and one end of the cantilever are connected through a shaft matched with the upper mounting hole and the lower mounting hole; the spring, the pressing wheel and the upper mounting hole form a triangular structure on the cantilever, and the elastic force of the spring transmits pressure to the pressing wheel through a fulcrum formed by a shaft in the upper mounting hole and presses the pressing wheel to be attached to the driving wheel.

Preferably, the cantilever and the base are respectively provided with a first positioning bulge and a second positioning bulge, and two ends of the spring are respectively sleeved outside the first positioning bulge and the second positioning bulge.

Preferably, the base is further provided with a wire outlet groove, the wire outlet groove is communicated with the gear mounting groove, the axial direction of the wire outlet groove is perpendicular to the axial direction of the driving wheel in the gear mounting groove, and a wire outlet guide pipe is mounted in the wire outlet groove.

Preferably, one end of the wire outlet guide pipe close to the pressing wheel and the driving wheel is provided with a cambered surface matched with the pressing wheel and the driving wheel; the other end of the wire outlet guide pipe is provided with a detachable wire outlet mounting seat.

Preferably, the cantilever is provided with a wire inlet hole.

Preferably, a motor is installed below the base, the output end of the motor is upwards inserted into the gear installation groove and connected with the driving wheel, and the motor drives the driving wheel to rotate.

Preferably, the device also comprises a motor frame, wherein the motor frame is fixedly arranged at the bottom of the base, and the motor is fixedly arranged on the motor frame.

Preferably, the wire drawing device further comprises a top cover, wherein the top cover is fixedly arranged at the upper end of the base, and the top cover seals the opening surfaces of the upper ends of the gear mounting groove and the wire drawing groove.

The utility model discloses owing to adopted above technical scheme, have apparent technological effect: the phenomenon that the printing wire slips in the wire feeding process is limited and avoided through knurling treatment at the wire feeding position; the design of the wire guide pipe is used, so that the wire guide pipe and the wire feeding gear have no clearance; this application not only has saved the space through more reasonable structure, and reduce cost has also increased work efficiency.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a plan view of the present invention.

Figure 3 is a schematic view of the drive wheel and puck configuration of figure 1.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-base, 2-driving wheel, 3-cantilever, 4-pinch roller, 5-spring, 6-wire outlet guide pipe, 7-motor, 8-top cover, 11-gear mounting groove, 12-lower mounting hole, 13-second positioning projection, 14-wire outlet groove, 21-first knurling embossing, 211-oblique convex pattern, 31-upper mounting hole, 32-first positioning projection, 33-wire inlet hole, 41-second knurling embossing, 411-oblique concave pattern, 412-anti-skid convex point, 61-wire outlet mounting seat, 71-motor frame,

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

Double gear wire feeder, as shown in the figure, including base 1, be equipped with gear mounting groove 11 on base 1, still include drive wheel 2, drive wheel 2 can be at 11 internal rotations of gear mounting groove, install cantilever 3 on the base 1, install pinch roller 4 on the cantilever 3, pinch roller 4 is located gear mounting groove 11, be equipped with first annular knurl impressed watermark 21 and second annular knurl impressed watermark 41 on drive wheel 2 and the pinch roller 4 respectively, first annular knurl impressed watermark 21 and second annular knurl impressed watermark 41 mutually support and drive the silk thread removal at rotatory in-process.

Example 2

The same as embodiment 1, except that the first knurled patterns 21 include a plurality of slanted ribs 211 arranged in parallel, the slanted ribs 211 form an included angle of 40 ° with the axial direction of the driving wheel 2, the second knurled patterns 41 are provided with a plurality of slanted concave patterns 411 matched with the slanted ribs 211, a plurality of anti-skid convex points 412 are provided in the slanted concave patterns 411, and the height of the anti-skid convex points 412 is smaller than the depth of the slanted concave patterns 411.

An upper mounting hole 31 is formed in the cantilever 3, a lower mounting hole 12 is formed in the base 1, and the base 1 and one end of the cantilever 3 are connected through a shaft matched with the upper mounting hole 31 and the lower mounting hole 12; the device is characterized by further comprising a spring 5 located between the base 1 and the cantilever 3, the spring 5, the pinch roller 4 and the upper mounting hole 31 form a triangular structure on the cantilever 3, and the elastic force of the spring 5 transmits pressure to the pinch roller 4 through a fulcrum formed by a shaft in the upper mounting hole 31 and presses the pinch roller 4 to be close to the driving wheel 2.

The cantilever 3 and the base 1 are respectively provided with a first positioning bulge 32 and a second positioning bulge 13, and two ends of the spring 5 are respectively sleeved outside the first positioning bulge 32 and the second positioning bulge 13. The spring 5 is locked by the first positioning projection 32 and the second positioning projection 13, and the release of the spring 5 is prevented.

The base 1 is also provided with a wire outlet groove 14, the wire outlet groove 14 is communicated with the gear mounting groove 1, the axial direction of the wire outlet groove 14 is vertical to the axial direction of the driving wheel 2 in the gear mounting groove 11, and a wire outlet guide pipe 6 is arranged in the wire outlet groove 14.

One end of the wire outlet guide pipe 6 close to the pinch roller 4 and the driving wheel 2 is provided with a cambered surface matched with the pinch roller 4 and the driving wheel 2; the other end of the wire outlet guide pipe 6 is provided with a detachable wire outlet mounting seat 61. Compatibility of long-range wire feed with short-range wire feed can be achieved by replacing the wire outlet mounting seat 61. The screw outlet mounting seat 61 can be replaced by a thread-matched pneumatic thread type movable joint by using a clamping groove and a press-button type pneumatic joint, and is used as a remote wire feeding mechanism; the wire outlet mounting base 61 is connected to the heat sink using a slot with external threads or a flange as a short-range wire feeder.

The cantilever 3 is provided with a screw inlet 33.

Example 3

The same as embodiment 1, except that a motor 7 is installed below the base 1, the output end of the motor 7 is inserted upwards into the gear installation groove 11 and connected with the driving wheel 2, and the motor 7 drives the driving wheel 2 to rotate.

The motor base further comprises a motor frame 71, the motor frame 71 is fixedly arranged at the bottom of the base 1, and the motor 7 is fixedly arranged on the motor frame 71.

The wire drawing device is characterized by further comprising a top cover 8, wherein the top cover 8 is fixedly arranged at the upper end of the base 1, and the top cover 8 seals the opening surfaces of the upper ends of the gear installation groove 11 and the wire drawing groove 14.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims

1. Double gear wire drive feed mechanism, its characterized in that: including base (1), be equipped with gear mounting groove (11) on base (1), still include drive wheel (2), drive wheel (2) can be at gear mounting groove (11) internal rotation, install cantilever (3) on base (1), install pinch roller (4) on cantilever (3), pinch roller (4) are located gear mounting groove (11), be equipped with first annular knurl impressed watermark (21) and second annular knurl impressed watermark (41) on drive wheel (2) and pinch roller (4) respectively, first annular knurl impressed watermark (21) and second annular knurl impressed watermark (41) mutually support and drive the silk thread removal at rotatory in-process.

2. A dual gear wire feeder according to claim 1, wherein: first annular knurl impressed watermark (21) are 30 ~ 50 contained angles including many parallel arrangement's cord ridge (211), cord ridge (211) and the axial of drive wheel (2), are equipped with a plurality of and cord ridge (211) complex oblique concave line (411) on second annular knurl impressed watermark (41), are equipped with a plurality of anti-skidding salient points (412) in oblique concave line (411), and the degree of depth that highly is less than oblique concave line (411) of anti-skidding salient point (412).

3. A dual gear wire feeder according to claim 1, wherein: an upper mounting hole (31) is formed in the cantilever (3), a lower mounting hole (12) is formed in the base (1), and the base (1) and one end of the cantilever (3) are connected through shafts matched with the upper mounting hole (31) and the lower mounting hole (12); still including spring (5) that are located between base (1) and cantilever (3), spring (5), pinch roller (4) and last mounting hole (31) form the triangle-shaped structure on cantilever (3), and the elasticity of spring (5) passes through the fulcrum of the axle formation in last mounting hole (31) to pinch roller (4) transmission pressure and presses pinch roller (4) to paste tight drive wheel (2).

4. A dual gear wire feeder according to claim 3, wherein: the cantilever (3) and the base (1) are respectively provided with a first positioning bulge (32) and a second positioning bulge (13), and the two ends of the spring (5) are respectively sleeved outside the first positioning bulge (32) and the second positioning bulge (13).

5. A dual gear wire feeder according to claim 1, wherein: the base (1) is further provided with a wire outlet groove (14), the wire outlet groove (14) is communicated with the gear installation groove (11), the axial direction of the wire outlet groove (14) is perpendicular to the axial direction of the driving wheel (2) in the gear installation groove (11), and a wire outlet guide pipe (6) is installed in the wire outlet groove (14).

6. A dual gear wire feeder according to claim 5, wherein: one end of the wire outlet guide pipe (6) close to the pinch roller (4) and the driving wheel (2) is provided with a cambered surface matched with the pinch roller (4) and the driving wheel (2); the other end of the wire outlet guide pipe (6) is provided with a detachable wire outlet mounting seat (61).

7. A dual gear wire feeder according to claim 1, wherein: the cantilever (3) is provided with a screw inlet hole (33).

8. A dual gear wire feeder according to claim 1, wherein: motor (7) are installed to the below of base (1), and the output of motor (7) upwards inserts in gear mounting groove (11) and is connected with drive wheel (2), and motor (7) drive wheel (2) and rotate.

9. A dual gear wire feeder according to claim 1, wherein: the motor is characterized by further comprising a motor frame (71), wherein the motor frame (71) is fixedly arranged at the bottom of the base (1), and the motor (7) is fixedly arranged on the motor frame (71).

10. A dual gear wire feeder according to claim 1, wherein: the wire drawing machine is characterized by further comprising a top cover (8), wherein the top cover (8) is fixedly arranged at the upper end of the base (1), and the top cover (8) seals the opening surfaces of the upper ends of the gear installation groove (11) and the wire drawing groove (14).