CN110561755A

CN110561755A - 3D printer send silk structure

Info

Publication number: CN110561755A
Application number: CN201910853295.XA
Authority: CN
Inventors: 候明高
Original assignee: 候明高
Current assignee: SHENZHEN LEXCENT TECHNOLOGY Co.,Ltd.
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2019-12-13
Anticipated expiration: 2039-09-10
Also published as: CN110561755B

Abstract

The invention relates to the technical field of 3D printing, and discloses a wire feeding structure of a 3D printer, which comprises a connecting slide block and a printing spray head, wherein two threaded rods are symmetrically arranged between the connecting slide block and the printing spray head and rotate at the same speed. This 3D printer send a structure, grasp the wire rod through the clutch collar, imitate the both hands and pull the wire rod at the uniform velocity and remove, clutch collar and wire rod ground area of contact is great, the ability of snatching the wire rod is greatly improved, it is longer because the clutch collar holds ground wire rod together, and remain vertical throughout, it guarantees more easily to the neutrality, secondly because the clutch collar is constantly moving ground, for current gear rigid, clutch collar ground surface temperature is difficult to accumulate, make clutch collar ground surface temperature lower, it melts in advance to be difficult to arouse the wire rod, and simultaneously, even the wire rod slightly melts, but clutch collar and wire rod ground area of contact is great, the wire rod atress dispersion is difficult for breaking.

Description

3D printer send silk structure

Technical Field

The invention relates to the technical field of 3D printing, in particular to a wire feeding structure of a 3D printer.

Background

Referring to fig. 1, most of 3D printers push a wire forward or backward through two gears, the gears bite into the wire, the moving distance of the wire is precisely controlled, the wire is added at a uniform speed, and the precision of 3D printing is further guaranteed.

On the one hand, because the contact surface between the wire rod and the two gears is small, the wire rod can not be grasped by a method when the gears clamp the wire rod (when two gear spaces are not matched with the diameter of the wire rod in particular), the wire rod can not be moved at a constant speed, so that the discharge of the spray head is not uniform, the printing quality is influenced, on the other hand, because the wire rod is suspended in the air with a distance from the wire guide pipe after leaving the gears, the centering performance can not be ensured by clamping the two wheels, the bending and even wire clamping phenomenon can easily occur.

Secondly, although be equipped with the thermal resistance between the fusing structure of present 3D printer wire feed structure and lower extreme, avoid a wire feed structure high temperature, because a wire feed structure and lower extreme heating structure are the intercommunication, the heat still can be the accumulation that does not stop, because the melting point of many consumptive materials is lower again for the wire rod is heated in a wire feed structure and becomes soft, the thickening, aggravates the phenomenon that the wire rod stagnates and hinders, crooked.

Disclosure of Invention

Aiming at the defects of the background technology, the invention provides the wire feeding structure of the 3D printer, which has the advantages of stable work and long continuous work time and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a 3D printer send a structure, includes link block and printing shower nozzle, the symmetry is equipped with two threaded rods between link block and the printing shower nozzle, two the threaded rod rotates with the speed of equidimension, two the equal swing joint of lateral wall of threaded rod has the movable block, and two movable block movement time interval differ and be less than half movement cycle, one side swing joint of movable block has double-layered pincers, one side fixedly connected with clamping sleeve of double-layered pincers.

Preferably, the clamping pincers comprise two pincers arms, two universal connecting rods, two driving arms, a connecting column and a hinging block, the two pincers arms are hinged to the limiting rod through the hinging block, the pincers arms are movably connected with the driving arms through the universal connecting rods, the two driving arms are hinged through the connecting column, and the connecting column is fixedly connected with the moving block.

Preferably, the sum of the lengths of the two drive arms and the two universal links is greater than the maximum width of the jawarms.

Preferably, a limiting rod penetrates through the middle of the clamping pincers, and the axes of the threaded rod, the limiting rod and the wire rod are coplanar.

Preferably, the clamping sleeve can pass through the clamping sleeve when the clamping sleeve is opened when the clamping sleeve is closed, so that the two clamping sleeves do not interfere with each other when reciprocating.

The invention has the following beneficial effects:

1. This 3D printer send a structure, through the tight cover of clamp promptly the wire rod, imitate both hands and stimulate the wire rod at the uniform velocity and remove, on the one hand, the tight cover of clamp is great with area of contact of wire rod ground, has improved greatly and has snatched the ability of wire rod ground, guarantees the even of pay-off, and then guarantees that the ejection of compact ground is even, on the other hand, because the tight cover of clamp holds ground wire rod under the arms longer, and remains throughout vertical, it guarantees more easily to the neutrality, reduces the crooked jam ground phenomenon of wire rod, has improved printing quality and efficiency.

2. This 3D printer send a structure, because the clutch collar is constantly moving ground, for current gear rigid, clutch collar surface temperature is difficult to the accumulation for clutch collar surface ground temperature is lower, is difficult to arouse the wire rod to melt in advance, simultaneously, even the wire rod slightly melts, but clutch collar and wire rod ground area of contact is great, and the wire rod atress dispersion is difficult to arouse the wire rod to supply to interrupt, guarantees to print ground normal clear.

Drawings

FIG. 1 is a schematic diagram of a wire feeding structure of a conventional 3D printer;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a top view of a portion of the structure of the present invention;

FIG. 4 is a schematic view of a clamping jaw of the present invention.

In the figure: 1. connecting the sliding block; 2. printing a spray head; 3. a threaded rod; 4. a moving block; 5. clamping pincers; 51. a clamp arm; 52. a universal connecting rod; 53. a drive arm; 54. connecting the columns; 55. a hinged block; 6. a limiting rod; 7. and (5) clamping sleeves.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2-4, a 3D printer wire feeding structure includes a connection slider 1 and a printing nozzle 2, two threaded rods 3 are symmetrically disposed between the connection slider 1 and the printing nozzle 2, the two threaded rods 3 rotate at the same speed, in this embodiment, a power device of the threaded rod 3 is two servo motors disposed in the connection slider 1, the outer side walls of the two threaded rods 3 are movably connected with moving blocks 4, and the difference between the movement time intervals of the two moving blocks 4 is less than a half movement period, i.e., the moving blocks 4 move up and down one period, when one moving block 4 moves to the lowermost side, the other moving block moves a distance from the uppermost side to the lowermost side, and gives acceleration time after the other moving block 4 turns to ensure that a driving wire rod is driven at a constant speed, one side of the moving block 4 is movably connected with a clamping clamp 5, and one side of the clamping clamp 5 is fixedly, and when the moving block 4 moves upwards, the clamping pincers 5 move in an opening state, the clamping sleeve 7 moves in an opening state at the moment, when the moving block 4 moves downwards, the clamping pincers 5 move in a clamping state, and at the moment, the clamping sleeve 7 clamps the wire rod in a clamping state.

Wherein, press from both sides tight pincers 5 including two tong arms 51, two universal connecting rod 52, two actuating arms 53 and even post 54 and articulated piece 55, two tong arms 51 are articulated with gag lever post 6 through articulated piece 55, tong arms 51 have actuating arm 53 through universal connecting rod 52 swing joint, two actuating arms 53 are articulated through even post 54, even post 54 and movable block 4 fixed connection, move block 4 and drive two actuating arms 53 through even post 54 and rotate when removing, the drive presss from both sides tight pincers 5 and opens and presss from both sides tightly, drag simultaneously and press from both sides tight pincers 5 and reciprocate.

The sum of the lengths of the two driving arms 53 and the two universal connecting rods 52 is greater than the maximum width of the clamp arm 51, so that the rotation angles of the two driving arms 53 are limited, and bidirectional rotation is avoided.

Wherein, the middle part of pressing from both sides tight pincers 5 runs through there is gag lever post 6, the axis coplane of threaded rod 3, gag lever post 6 and wire rod, and gag lever post 6 guarantees on the one hand to press from both sides tight pincers 5 and gag lever post 6 vertical motion, and on the other hand as the connecting axle that presss from both sides tight pincers 5, the upper and lower both ends of gag lever post 6 fixed connection link block 1 respectively with print shower nozzle 2, and gag lever post 6 still is as connecting link block 1 and the main support of printing shower nozzle 2.

When the clamping sleeve 7 is closed, the clamping sleeve 7 can penetrate through the clamping sleeve 7 when the clamping sleeve is opened, and mutual interference between the two clamping sleeves 7 during reciprocating motion is guaranteed.

The working principle of the invention is as follows:

When the two threaded rods 3 rotate, the moving block 4 is driven to move, when the moving block 4 moves downwards, the clamping pincers 5 are clamped tightly, the clamping sleeve 7 is further made to rotate a wire, the wire is driven to move, when the moving block 4 moves to the lowest end, the moving block 4 turns to move upwards, the wire is opened by the clamping pincers 5, meanwhile, the other moving block 4 moves to the highest end and returns to the highest end to accelerate to a normal speed, the wire starts to be clamped and is driven to move after the moving block 4 accelerates to the normal speed, and when the two moving blocks 4 are staggered, the moving block 4 above penetrates through the moving block 4 below.

it is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a 3D printer send a structure, includes link block (1) and printing shower nozzle (2), its characterized in that: the printing device is characterized in that two threaded rods (3) are symmetrically arranged between the connecting sliding block (1) and the printing nozzle (2), the two threaded rods (3) rotate at the same speed, the outer side walls of the two threaded rods (3) are movably connected with moving blocks (4), the difference between the moving time intervals of the two moving blocks (4) is smaller than a half movement period, one side of each moving block (4) is movably connected with a clamping clamp (5), and one side of each clamping clamp (5) is fixedly connected with a clamping sleeve (7).

2. An FDM nozzle extrusion pressure stabilization structure, according to claim 1, wherein: the clamping pincers (5) comprise two pincers arms (51), two universal connecting rods (52), two driving arms (53), a connecting column (54) and a hinge block (55), the two pincers arms (51) are hinged to the limiting rod (6) through the hinge block (55), the pincers arms (51) are movably connected with the driving arms (53) through the universal connecting rods (52), the two driving arms (53) are hinged through the connecting column (54), and the connecting column (54) is fixedly connected with the moving block (4).

3. An FDM nozzle extrusion pressure stabilization structure, according to claim 2, wherein: the sum of the lengths of the two drive arms (53) and the two universal connecting rods (52) is greater than the maximum width of the clamp arm (51).

4. an FDM nozzle extrusion pressure stabilization structure, according to claim 1, wherein: the middle part of the clamping pincers (5) penetrates through a limiting rod (6), and the axis of the threaded rod (3), the limiting rod (6) and the axis of the wire are coplanar.

5. an FDM nozzle extrusion pressure stabilization structure, according to claim 1, wherein: when the clamping sleeve (7) is closed, the clamping sleeve (7) can penetrate through the clamping sleeve (7) when the clamping sleeve is opened, and mutual interference between the two clamping sleeves (7) during reciprocating motion is guaranteed.