CN112247148A

CN112247148A - Wire feeding mechanism easy to adjust

Info

Publication number: CN112247148A
Application number: CN202010930529.9A
Authority: CN
Inventors: 吴文武; 陈江博; 高峰; 李艳; 杨勃; 刘辰; 解瑞东
Original assignee: Xian University of Technology
Current assignee: Xian University of Technology
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-01-22
Anticipated expiration: 2040-09-07
Also published as: CN112247148B

Abstract

The invention discloses an easily-adjusted wire feeding mechanism which comprises a supporting plate, wherein a driving motor is fixed on the supporting plate, a shaft end of the driving motor is connected with a shaft coupler, the shaft coupler is connected with a stepped shaft penetrating through the supporting plate, a driving transmission gear is nested on one side of the stepped shaft close to the shaft coupler, a driving feeding roller is nested on one side far away from the shaft coupler, a driven feeding roller meshed with the driving feeding roller is arranged on the same vertical plane of the driving feeding roller, the driving transmission gear is meshed with a belt wheel transmission device so as to drive the driven feeding roller to rotate, and the driven feeding roller and the driving feeding roller are in clearance fit on the same side to realize. The two wheels are in clearance fit, so that the left-right shaking of the silk material can be better limited, the feeding distance can be controlled, the stable silk feeding can be ensured, and the 3D printing quality can be ensured; the mechanical structure is simple, the volume is small, the manufacturing cost is low, the use is very convenient, and the large-scale popularization and use can be realized.

Description

Wire feeding mechanism easy to adjust

Technical Field

The invention relates to the technical field of 3D printing, in particular to an easily-adjusted wire feeding mechanism.

Background

3D printing technology develops rapidly, and FDM (fused deposition) prints the 3D printer of technical principle, and its solid-state shaping material is through the shower nozzle of material feeding unit send into 3D printer, and the shower nozzle is extruded after heating solid-state shaping material into the semi-molten state, according to the orbit that sets for in advance, and the layer-by-layer prints, finally forms the entity. The existing feeding device usually only uses a gear and a pulley for matching to feed wires, the method can cause insufficient force for feeding the wires, the wires slip, the condition that the spray head blocks the wires seriously occurs, and much inconvenience is brought to the use of a printer.

Disclosure of Invention

The invention aims to provide an easily-adjusted wire feeding mechanism, which solves the problems of insufficient wire feeding force channel and wire slipping in the prior art.

The invention adopts the technical scheme that the wire feeding mechanism easy to adjust comprises a supporting plate, a driving motor is fixed on the supporting plate, a shaft end of the driving motor is connected with a shaft coupler, the shaft coupler is connected with a stepped shaft penetrating through the supporting plate, one side of the stepped shaft close to the shaft coupler is nested with a driving transmission gear, one side of the stepped shaft far away from the shaft coupler is nested with a driving feed roller, a driven feed roller meshed with the driving feed roller is arranged on the same vertical plane of the driving feed roller, the driving transmission gear is meshed with a belt wheel transmission device so as to drive the driven feed roller to rotate, and the driven feed roller and the driving feed roller are in clearance fit at the same side to realize wire feeding.

The present invention is also characterized in that,

the belt wheel transmission device comprises a main driving wheel, an auxiliary driving wheel and a tension wheel, the main driving wheel and the auxiliary driving wheel are respectively embedded in the supporting plate through deep groove ball bearings, and the driven feeding roller is connected with the auxiliary driving wheel through a stepped shaft; the main driving wheel, the auxiliary driving wheel and the tension wheel are in a triangular position relation and are connected through a belt; the tensioning wheel passes through the bolt fastening on the bar notch in the backup pad, thereby the tensioning wheel can be followed bar notch adjusting position and adjusted the tensile force of control belt.

The contact department of step shaft and backup pad is provided with the deep groove ball bearing of embedding in the backup pad, and the shaft coupling drives initiative feed roll through the step shaft that drives the backup pad of crossing that supports through deep groove ball bearing and moves.

The main body of the driving feed roller is in a cake shape, bulges are arranged along the edge of the main body, continuously staggered round holes are uniformly distributed in the bulges, and grooves in clearance fit with the bulges are formed in the driven feed roller.

The main body of the driving feed roller is in a cake shape, grooves are formed in the edges of the main body, continuously staggered round holes are uniformly distributed in the grooves, and bulges in clearance fit with the grooves are arranged on the driven feed roller.

The round holes are made by a drilling process, and the depth and the number of the drilled holes are determined by the diameter of the conveyed wire.

The position of the tensioning wheel is adjusted through a telescopic rod parallel to the strip-shaped groove opening, and the other end of the telescopic rod is fixed on the supporting plate through a fixing frame.

The invention has the advantages that the distance between the driven feeding wheel and the silk material is realized by adjusting the tension degree of the belt wheel, so that the contact area between the driving feeding wheel and the silk material is controlled, the resistance of the silk feeding is reduced, the length of the silk feeding distance can be better controlled, and the accurate silk feeding of the silk material is realized.

The mechanism has the following advantages: (1) the structure is simple and compact; (2) the rigidity is good; (3) the silk material of different materials can be conveyed; (4) the assembly and disassembly are convenient. The advantages enable the wire feeding mechanism to be easier to manufacture, assemble and control, have good flexibility and high assembly precision, and can be widely applied to the 3D printing technology industry.

Drawings

FIG. 1 is a schematic diagram of the general configuration of an easily adjustable wire feeder of the present invention;

FIG. 2 is a schematic view of an easily adjustable wire feeder drive motor and coupling arrangement according to the present invention;

FIG. 3 is a schematic view of the connection relationship between the driving motor, the coupling and the active feed roller of the easily adjustable wire feeding mechanism of the present invention;

FIG. 4 is a schematic view of a pulley drive arrangement for an easily adjustable wire feeder of the present invention;

FIG. 5 is a schematic view of the connection between the pulley drive and the driven feed roll of an easily adjustable wire feeder of the present invention;

FIG. 6 is a schematic view of the feed process of the drive feed roll and the driven feed roll of an easily adjustable wire feeder of the present invention;

FIG. 7 is a schematic view of the feed engagement between the driving feed roller and the driven feed roller of an easily adjustable wire feeder of the present invention.

In the figure, 1, a support plate, 2, a driving motor, 3, a coupler, 4, a stepped shaft, 5, a deep groove ball bearing, 6, a driving feeding roller, 7, a main transmission gear, 8, an auxiliary transmission gear, 9, a main driving wheel, 10, an auxiliary driving wheel, 11, a driven feeding roller, 12, a tension pulley and 13 are belts.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The invention relates to an easily-adjusted wire feeding mechanism, which is structurally shown in figures 1, 2 and 3 and comprises a supporting plate 1, wherein a driving motor 2 is fixed on the supporting plate 1, the shaft end of the driving motor 2 is connected with a shaft coupler 3, the shaft coupler 3 is connected with a stepped shaft 4 penetrating through the supporting plate 1, one side, close to the shaft coupler 3, of the stepped shaft 4 is nested with a driving transmission gear 7, one side, far away from the shaft coupler 3, of the stepped shaft 4 is nested with a driving feeding roller 6, a driven feeding roller 11 meshed with the driving feeding roller 6 is arranged on the same vertical plane of the driving feeding roller 6, the driving transmission gear 7 is meshed with a belt wheel transmission device so as to drive the driven feeding roller 11 to rotate, and the driven feeding roller 11 and the driving feeding roller 6 are in clearance fit.

As shown in fig. 4 and 5, the belt wheel transmission device comprises a main driving wheel 9, an auxiliary driving wheel 10 and a tension wheel 12, wherein the main driving wheel 9 and the auxiliary driving wheel 10 are respectively embedded on the supporting plate 1 through deep groove ball bearings, and a driven feeding roller 11 is connected with the auxiliary driving wheel 10 through a stepped shaft; the main driving wheel 9, the auxiliary driving wheel 10 and the tension wheel 12 are in a triangular position relation and are connected through a belt 13; the tensioning wheel 12 is fixed on the strip-shaped notch on the supporting plate 1 through a bolt, and the tensioning wheel 12 can adjust the position along the strip-shaped notch so as to adjust the tensioning force of the control belt 13.

The contact department of step shaft 4 and backup pad 1 is provided with the deep groove ball bearing 5 of embedded in backup pad 1, and shaft coupling 3 drives initiative feed roll 6 through driving the step shaft 4 that crosses backup pad 1 and support through deep groove ball bearing 5 and moves.

The main body of the driving feed roller 6 is in a cake shape, protrusions are arranged along the edges of the main body, continuously staggered round holes are uniformly distributed in the protrusions, and grooves in clearance fit with the protrusions are formed in the driven feed roller 11.

The driven feed roller adopts a revolving body with a concave middle part and two convex sides, and certain allowance is left on the two sides of the convex and concave matching part, and clearance fit is adopted between the two wheels, so that the swinging of the silk material left and right and the feeding distance can be better limited, more stable silk feeding can be ensured, and the 3D printing quality can be ensured. The invention has simple mechanical structure, small volume, low manufacturing cost and very convenient use, and can be popularized and used in a large scale.

As shown in fig. 6 and 7, the main body of the driving feed roller 6 is cake-shaped, grooves are formed along the edge of the main body, continuously staggered round holes are uniformly distributed in the grooves, and the driven feed roller 11 is provided with bulges in clearance fit with the grooves.

Tensioning wheel 12 concreties through the telescopic link and provides the tensile force for the belt on the collateral branch backup pad, thereby opened a notch in the backup pad on right side and be used for adjusting the size of tensile force through the position of adjusting the tensioning wheel.

Description about the motion relationship between the matching parts for driving the driven wheel to move:

the tail end of the driving motor 2 drives the shaft coupler 3, so that the driving stepped shaft 4 of the shaft coupler 3 moves, the near end of the stepped shaft is provided with a main transmission gear, and the main transmission gear arranged at the near end of the stepped shaft and an auxiliary transmission gear arranged on a main driving wheel in the belt wheel transmission device are meshed for transmission, so that the main driving wheel in the belt wheel transmission device is driven to move in the opposite direction. Thereby drive the band pulley on the main drive wheel and carry out the conveying motion, the band pulley relies on frictional force to drive the vice drive wheel among the band pulley transmission of oblique top and carries out the motion in the equidirectional upward, and vice drive wheel passes through deep groove ball bearing support to be fixed in the backup pad, the end at vice drive wheel is equipped with driven feed roll, roll on the backup pad on right side through the long screw at the oblique below take-up pulley of vice drive wheel, and open the notch in the backup pad on right side, thereby adjust the position of take-up pulley through the distance of adjusting the long screw precession, the size of tensile force on the adjustment band pulley, thereby the magnitude of frictional force between each wheel in control band pulley and the device, realize the transmission of driven voller.

The coupling 3 is driven by the driving motor 2 as shown in fig. 3, the stepped shaft 4 supported by the deep groove ball bearing 5 is driven to drive the driving feed roller 6 at the rightmost end to move, the coupling 3 is driven by the main transmission gear 7 arranged on the stepped shaft 4 as shown in fig. 4, the main transmission gear 7 drives the main driving wheel 9 in the belt wheel transmission device to move through the action of the auxiliary transmission gear 8, so as to drive the auxiliary driving wheel 10 in the belt wheel transmission device at the upper right to move, the stepped shaft 4 supported by the deep groove ball bearing 5 is driven by the main transmission gear 7 to drive the driven feed roller 11 at the rightmost end to move, the tension wheel 12 at the lower right corner is used for providing tension for the belt wheel, and the tension can be adjusted through the length of the screw screwing distance on the supporting plate 1. As shown in fig. 5, the rightmost driven feed roller 11 is driven by the auxiliary driving wheel 10 in the upper right pulley transmission. As shown in FIG. 6, the driving feed roller 6 and the driven feed roller 11 are in clearance fit to perform a relative motion for feeding wires.

Claims

1. An easy-to-adjust wire feeder is characterized by comprising a support plate (1), a driving motor (2) is fixed on the supporting plate (1), the shaft end of the driving motor (2) is connected with a coupling (3), the coupling (3) is connected with a stepped shaft (4) penetrating through the support plate (1), one side of the stepped shaft (4) close to the coupler (3) is nested with a driving transmission gear (7), one side of the stepped shaft far away from the coupler (3) is nested with a driving feed roller (6), a driven feed roller (11) meshed with the driving feed roller (6) is arranged on the same vertical plane of the driving feed roller (6), the driving transmission gear (7) is meshed with the belt wheel transmission device so as to drive the driven feeding roller (11) to rotate, the driven feeding roller (11) and the driving feeding roller (6) are positioned on the same side and in clearance fit to realize wire feeding.

2. The easy-to-adjust wire feeder of claim 1, wherein the pulley transmission comprises a main driving wheel (9), a secondary driving wheel (10) and a tension wheel (12), the main driving wheel (9) and the secondary driving wheel (10) are embedded on the supporting plate (1) through deep groove ball bearings respectively, and the driven feed roller (11) is connected with the secondary driving wheel (10) through a stepped shaft; the main driving wheel (9), the auxiliary driving wheel (10) and the tension wheel (12) are in a triangular position relation and are connected through a belt (13); the tensioning wheel (12) is fixed on a strip-shaped notch on the supporting plate (1) through a bolt, and the position of the tensioning wheel (12) can be adjusted along the strip-shaped notch, so that the tensioning force of the control belt (13) can be adjusted.

3. The wire feeder according to claim 1 or 2, characterized in that the contact position of the stepped shaft (4) and the support plate (1) is provided with a deep groove ball bearing (5) embedded in the support plate (1), and the coupler (3) drives the active feed roller (6) to move by driving the stepped shaft (4) which traverses the support plate (1) and is supported by the deep groove ball bearing (5).

4. The wire feeder easy to adjust as claimed in claim 2, wherein the main body of the driving feed roller (6) is pie-shaped, and protrusions are arranged along the edge of the main body, and continuously staggered round holes are uniformly distributed on the protrusions, and the driven feed roller (11) is provided with grooves in clearance fit with the protrusions.

5. The wire feeder of claim 2, characterized in that the main body of the driving feed roller (6) is cake-shaped, a groove is arranged along the edge of the main body, continuously staggered round holes are uniformly distributed in the groove, and the driven feed roller (11) is provided with a bulge which is in clearance fit with the groove.

6. An easily adjustable wire feeder according to claim 4 or 5, wherein the circular holes are formed by a drilling process, and the depth and number of the drilled holes are determined by the diameter of the wire to be fed.

7. The easy-to-adjust wire feeder according to claim 2, wherein the tension wheel (12) is adjusted in position by a telescopic rod parallel to the slot of the strip, the other end of the telescopic rod being fixed to the support plate (1) by a fixing frame.