CN214056461U

CN214056461U - Automatic lifting spray head of 3D printer

Info

Publication number: CN214056461U
Application number: CN202023011758.5U
Authority: CN
Inventors: 樊立业; 曹文佳; 曹强国
Original assignee: Henan Suwei Electronic Technology Co ltd
Current assignee: Henan Suwei Electronic Technology Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-08-27
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses an automatic lifting spray head of a 3D printer, which comprises a machine head box, a retainer, a servo motor, a transmission shaft and a balance wheel; the holder is fixed with the bottom of the head box, the servo motor is arranged above the head box, the lower end of the transmission shaft is rotatably connected with the holder, and the upper end of the transmission shaft is connected with a rotating shaft of the servo motor; the balance wheel is sleeved on the transmission shaft between the head box and the retainer; two sides of the balance wheel are respectively provided with a telescopic pipe, each telescopic pipe comprises an upper telescopic part, a lower telescopic part and a baffle ring part, and a compression spring is sleeved outside the lower telescopic part between the baffle ring part and the retainer; a shaft lever perpendicular to the transmission shaft is arranged on the side face of the blocking ring part, and a guide device is arranged at one end of the shaft lever and is arranged in the slide way; the lower end of the lower telescopic part is provided with a spray head component. The utility model discloses can realize freely switching of shower nozzle subassembly, be favorable to improving the quality of printing.

Description

Automatic lifting spray head of 3D printer

Technical Field

The utility model relates to a 3D printer technical field, concretely relates to 3D printer automatic rising shower nozzle.

Background

At present, the positions of most multi-nozzle 3D printers on the market are fixed, in order to prevent the nozzles from being scratched to a model, the auxiliary nozzles are usually 0.2-0.5 mm higher than the main nozzles, the positions of the auxiliary nozzles are adjusted before printing, the heights of the auxiliary nozzles are unchanged in the printing process, the auxiliary nozzles alternately discharge threads, and double-color model printing is achieved. The scheme has wide application due to simple structure, but needs manual adjustment of the relative heights of the two spray heads, is not easy to control, and can seriously influence the printing quality when being too high or too low. In the printing process, the heights of the two nozzles are different, when the auxiliary nozzle prints the first layer, the wire outlet distance is far away from the next layer, the condition of infirm adhesion occurs, in addition, in the printing process, the main nozzle can scratch and rub the model, and the model color is interfered.

SUMMERY OF THE UTILITY MODEL

The utility model provides a solve prior art not enough, provide a 3D printer automatic rising shower nozzle, its fast switch over that can realize the shower nozzle, and the simultaneous control mode is simple, can promote the printing quality of model.

In order to achieve the above purpose, the utility model provides a following technical scheme:

an automatic lifting spray head of a 3D printer comprises a machine head box, a retainer, a servo motor, a transmission shaft and a balance wheel; the holder is fixed with the bottom of the head box, the servo motor is arranged above the head box, the lower end of the transmission shaft is rotatably connected with the holder, and the upper end of the transmission shaft is connected with a rotating shaft of the servo motor and is driven by the servo motor to rotate; the balance wheel is sleeved on the transmission shaft between the head box and the retainer, a slideway is arranged on the side surface of the balance wheel and surrounds the balance wheel for a circle, and the height of one side of the slideway is lower than that of the other side of the slideway; the bottom of the machine head box is provided with two guide holes which are respectively positioned at two sides of the transmission shaft, first wire feeding holes which penetrate through the machine head box are arranged above the guide holes, and two through holes which are positioned right below the guide holes are arranged on the retainer; two sides of the balance wheel are respectively provided with a telescopic pipe, the telescopic pipes are positioned between the head box and the retainer, and the telescopic pipes are provided with second wire feeding holes which penetrate through the upper end and the lower end of the telescopic pipes; the telescopic pipe comprises an upper telescopic part, a lower telescopic part and a blocking ring part, wherein the upper telescopic part, the lower telescopic part and the blocking ring part are integrally formed; a shaft lever perpendicular to the transmission shaft is arranged on the side face of the blocking ring part, a guide device is arranged at one end, away from the blocking ring part, of the shaft lever, and the guide device is arranged in the slide way and is in rolling contact with the slide way; the lower end of the lower telescopic part is provided with a spray head assembly.

Furthermore, a flange bearing is arranged on the retainer, and the lower end of the transmission shaft is arranged in the flange bearing.

Furthermore, the transmission shaft is connected with a rotating shaft of the servo motor through a coupler.

Further, the guiding device is a guide wheel or a bearing.

Furthermore, the telescopic pipe is made of POM materials.

Furthermore, the side face of the upper end of the balance wheel is provided with at least one threaded hole, a jackscrew is screwed into the threaded hole, and the balance wheel is fixed with the transmission shaft through the jackscrew.

Compared with the prior art, the utility model realizes the free switching of the spray head components through the servo motor when in use, does not need to manually adjust the relative heights of the two spray head components, is easy to control and convenient to adjust, and is beneficial to improving the printing efficiency; the conditions of too long wire outlet distance and infirm adhesion during printing operation of the 3D printer can be avoided by switching the spray head assembly, and meanwhile, the phenomenon that the spray head cuts and rubs the model is also avoided, so that the printing quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is an internal block diagram of the present invention, with the showerhead assembly not shown;

fig. 4 is a perspective view of the balance of the present invention;

fig. 5 is a front view of the balance of the present invention;

FIG. 6 is a cross-sectional view taken along line A-A of FIG. 5;

fig. 7 is a structural diagram of the telescopic tube of the present invention.

The reference numerals are explained below:

in the figure: 1. a servo motor; 2. a coupling; 3. a drive shaft; 4. a head cartridge; 401. a guide hole; 402. a first wire feed hole; 5. a balance wheel; 501. a slideway; 502. a threaded hole; 6. a telescopic pipe; 601. an upper telescoping section; 602. a retaining ring part; 603. a lower telescoping section; 604. a second wire feed hole; 7. a compression spring; 8. a holder; 9. a flange bearing; 10. a guide device; 11. a shaft lever; 12. a showerhead assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-7, the utility model provides an automatic lifting nozzle of 3D printer, which comprises a head box 4, a holder 8, a servo motor 1, a transmission shaft 3 and a balance wheel 5; the holder 8 is fixed with the bottom of the head box 4, the servo motor 1 is arranged above the head box 4, the lower end of the transmission shaft 3 is rotatably connected with the holder 8, the upper end of the transmission shaft 3 is connected with a rotating shaft of the servo motor 1 through the coupler 2, and the transmission shaft 3 is driven to rotate by the servo motor 1; the balance wheel 5 is provided with a through hole for the transmission shaft 3 to pass through, and the balance wheel 5 is sleeved on the transmission shaft 3 between the head box 4 and the retainer 8; the side surface of the upper end of the balance wheel 5 is at least provided with a threaded hole 502, a jackscrew (not shown in the figure) is screwed into the threaded hole 502, the balance wheel 5 is fixed with the transmission shaft 3 through the jackscrew, and the balance wheel 5 can only synchronously rotate along with the transmission shaft 3 and cannot move up and down; a slideway 501 is arranged on the side surface of the balance wheel 5, the slideway 501 surrounds the balance wheel 5 for a circle, and the height of one side of the slideway 501 is lower than that of the other side; the bottom of the machine head box 4 is provided with two guide holes 401 which are respectively positioned at two sides of the transmission shaft 3, first wire feeding holes 402 which penetrate through the machine head box 4 are respectively arranged above the guide holes 401, and two through holes which are positioned right below the guide holes 401 are arranged on the retainer 8; two sides of the balance wheel 5 are respectively provided with a telescopic pipe 6, the telescopic pipes 6 are positioned between the head box 4 and the retainer 8, and the telescopic pipes 6 are provided with second wire feeding holes 604 which penetrate through the upper end and the lower end of the telescopic pipes; the telescopic pipe 6 comprises an upper telescopic part 601, a lower telescopic part 603 and a blocking ring part 602, wherein the upper telescopic part 601, the lower telescopic part 603 and the blocking ring part 602 are integrally formed, the upper telescopic part 601 is inserted into the guide hole 401 and can slide up and down in the guide hole 401, the lower telescopic part 603 is inserted into the through hole of the retainer 8, after the upper telescopic part 601 is inserted into the guide hole 401, the first wire feeding hole 402 and the second wire feeding hole 604 are coaxial, and the outer side of the lower telescopic part 603 between the blocking ring part 602 and the retainer 8 is sleeved with a compression spring 7; a shaft rod 11 perpendicular to the transmission shaft 3 is arranged on the side surface of the ring blocking part 602, a guide device 10 is arranged at one end of the shaft rod 11 far away from the ring blocking part 602, and the guide device 10 is arranged in the slideway 501 and is in rolling contact with the slideway 501; the lower end of the lower telescopic part 603 is provided with a spray head assembly 12, the lower end of the lower telescopic part 603 is provided with an external thread, the spray head assembly 12 is in threaded connection with the lower telescopic part 603, and the balance wheel 5 rotates to enable the two telescopic pipes 6 to move upwards or downwards so as to drive the two spray head assemblies 12 to move upwards or downwards.

In order to realize that the rotation between transmission shaft 3 and the holder 8 is connected, reduces the swing amplitude of 3 lower extremes of transmission shaft simultaneously, guarantees 3 pivoted stability of transmission shaft, the utility model discloses be provided with flange bearing 9 on the well holder 8, the 3 lower extremes of transmission shaft set up in flange bearing 9. The guide device 10 may be a guide wheel or a bearing, and the guide wheel or the bearing is in rolling contact with the slideway 501 to reduce the running resistance and reduce the wear of the guide device 10. The telescopic pipe 6 can be made of POM materials, the inner wall of the second wire feeding hole 604 is a cylindrical surface with a light ring, resistance of consumables passing through the second wire feeding hole 604 is reduced, and meanwhile the POM materials also have good wear resistance, so that the telescopic pipe 6 is guaranteed to have long service life. It should be added that the tolerance fit between the upper telescopic part 601 and the guiding hole 401 is controlled to be 0.01mm, which not only ensures smooth lifting and sliding, but also eliminates the side-to-side shaking of the telescopic pipe 6. When the main nozzle assembly or the auxiliary nozzle assembly is used for printing, the corresponding compression spring 7 is compressed, the elastic force of the compression spring 7 enables the gap between the bearing and the slideway 501 to be eliminated, the nozzle assembly is prevented from moving up and down during printing, and the stability of the printing operation of the nozzle assembly is ensured.

The utility model discloses two shower nozzle subassemblies 12 are the same in height under the normal state, and when printing, the servo motor 1 drives balance 5 to rotate 90 degrees, and one of them shower nozzle subassembly descends and carries out the printing operation, and the other shower nozzle subassembly ascends for standby; when the printing materials need to be switched, the servo motor 1 drives the balance wheel 5 to rotate 180 degrees, the lower spray head assembly ascends, the upper spray head assembly descends to realize the switching of the spray head assemblies, and then the printing materials are printed by the lower spray head assembly.

The utility model discloses realize freely switching of shower nozzle subassembly through servo motor 1 when using, do not need the relative height of two shower nozzle subassemblies of manual regulation, the easy control is adjusted conveniently moreover, is favorable to improving printing efficiency. The conditions of too long wire outlet distance and infirm adhesion during printing operation of the 3D printer can be avoided by switching the spray head assembly, and meanwhile, the phenomenon that the spray head cuts and rubs the model is also avoided, so that the printing quality is improved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An automatic lifting spray head of a 3D printer is characterized by comprising a machine head box, a retainer, a servo motor, a transmission shaft and a balance wheel; the holder is fixed with the bottom of the head box, the servo motor is arranged above the head box, the lower end of the transmission shaft is rotatably connected with the holder, and the upper end of the transmission shaft is connected with a rotating shaft of the servo motor and is driven by the servo motor to rotate; the balance wheel is sleeved on the transmission shaft between the head box and the retainer, a slideway is arranged on the side surface of the balance wheel and surrounds the balance wheel for a circle, and the height of one side of the slideway is lower than that of the other side of the slideway; the bottom of the machine head box is provided with two guide holes which are respectively positioned at two sides of the transmission shaft, first wire feeding holes which penetrate through the machine head box are arranged above the guide holes, and two through holes which are positioned right below the guide holes are arranged on the retainer; two sides of the balance wheel are respectively provided with a telescopic pipe, the telescopic pipes are positioned between the head box and the retainer, and the telescopic pipes are provided with second wire feeding holes which penetrate through the upper end and the lower end of the telescopic pipes; the telescopic pipe comprises an upper telescopic part, a lower telescopic part and a blocking ring part, wherein the upper telescopic part, the lower telescopic part and the blocking ring part are integrally formed; a shaft lever perpendicular to the transmission shaft is arranged on the side face of the blocking ring part, a guide device is arranged at one end, away from the blocking ring part, of the shaft lever, and the guide device is arranged in the slide way and is in rolling contact with the slide way; the lower end of the lower telescopic part is provided with a spray head assembly.

2. The automatic lifting spray head of the 3D printer according to claim 1, wherein: the retainer is provided with a flange bearing, and the lower end of the transmission shaft is arranged in the flange bearing.

3. The automatic lifting spray head of the 3D printer according to claim 1, wherein: and the transmission shaft is connected with a rotating shaft of the servo motor through a coupler.

4. The automatic lifting spray head of the 3D printer according to claim 1, wherein: the guiding device is a guide wheel or a bearing.

5. The automatic lifting spray head of the 3D printer according to claim 1, wherein: the telescopic pipe is made of POM materials.

6. The automatic lifting spray head of the 3D printer according to claim 1, wherein: the side face of the upper end of the balance wheel is at least provided with a threaded hole, a jackscrew is screwed into the threaded hole, and the balance wheel is fixed with the transmission shaft through the jackscrew.