CN210453791U

CN210453791U - Automatic switching device for 3D printing nozzle

Info

Publication number: CN210453791U
Application number: CN201920880536.5U
Authority: CN
Inventors: 李晶; 国洪建; 胡春霞; 岳武; 徐阳; 姬金金; 胡伟; 袁斌; 张忠焘; 杨睿璇; 李杏发; 陈兴
Original assignee: Lanzhou Institute of Technology
Current assignee: Lanzhou Institute of Technology
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-05-05
Anticipated expiration: 2029-06-12

Abstract

The utility model discloses a 3D prints nozzle automatic switching control equipment, which comprises an outer shell, the opening has been seted up to the left part of the lower extreme of shell, the downside fixed mounting of the support of the inboard right part of shell has the footstock, the pivot is installed through the axle sleeve rotation in the middle part of backup pad, the upper end fixed mounting of pivot has the fluted disc, the gear rotates with the motor to be connected, the middle part fixed mounting of pivot has the rim plate, a plurality of through-hole has been seted up to the inboard symmetry of rim plate, the inboard slidable mounting of through-hole has the montant, the spring has been cup jointed in the outside of montant, montant fixed mounting is in the downside of fixed plate, fixed plate fixed mounting is in the lateral wall of conveying pipeline, the upper end and the storage tank intercommunication of conveying pipeline, the gyro wheel is. Adopt a plurality of nozzles to work respectively, print efficiency is higher, avoids the material adhesion to cause the jam in mechanism when withdrawing from the nozzle cooling.

Description

Automatic switching device for 3D printing nozzle

Technical Field

The utility model belongs to the technical field of 3D printing apparatus, concretely relates to 3D prints nozzle automatic switching control equipment.

Background

3D printing is a rapid prototyping technique, which is a technique that builds objects by layer-by-layer printing using bondable materials, such as powdered metal or plastic, based on digital model files. Fused Deposition Modeling (FDM) is currently one of the most widely used 3D printing techniques. The basic principle is that plastic raw materials (usually plastic wires) are fed into a printing head through a wire feeding device, extruded through a nozzle, stacked on a printing platform, and rapidly cooled and formed. Since the extrusion device and the printing platform can move in relation to each other in the horizontal (X, Y) and vertical (Z) directions, it is ensured that plastic can be extruded to any position on the printing platform. The mixed printing technology of multi-color and multi-material is a research and development hotspot in the field of 3D printing, and at present, the mixed printing of multi-color and multi-material is mainly realized in the FDM technology through the following four ways.

At present 3D printing that uses is adopted through inputing multiple molten material respectively to the nozzle, rethread nozzle blowout, print the operation, and need take out preceding material earlier when switching the material, the switching time is longer, and also slowly cool off when first material withdraws from the shower nozzle, easy adhesion is inside extrusion devices, form the end cap, not only have the waste of material, and when the fusing point of two kinds of materials is different, probably cause the problem that high temperature extruded and make low temperature material carbonization, 3D prints nozzle automatic switching device to these problems design.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 3D prints nozzle automatic switching control equipment and drops into use to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an automatic switching device for a 3D printing nozzle comprises a shell, wherein an opening is formed in the left part of the lower end of the shell, a plurality of threaded holes are formed in the inner side of an end plate fixedly mounted on the outer side wall of the upper end of the shell, a supporting plate is fixedly mounted in the middle of the inner side of the shell through symmetrically arranged supports, a footstock is fixedly mounted on the lower side of the support at the right part of the inner side of the shell, a rotating shaft is rotatably mounted in the middle of the supporting plate through a shaft sleeve, a fluted disc is fixedly mounted at the upper end of the rotating shaft and is connected with a gear in a gear transmission manner, the gear is rotatably connected with a motor, a wheel disc is fixedly mounted in the middle of the rotating shaft, a plurality of through holes are symmetrically formed in the inner side of the wheel disc, a vertical rod is slidably mounted in the inner, the inboard symmetry of rim plate has seted up a plurality of installing port, the conveying pipeline runs through and is provided with in the inboard of installing port, the upper end and the storage tank intercommunication of conveying pipeline, the side of storage tank is provided with defeated material mouth, the gyro wheel is installed through the gyro wheel mount pad rotation in the upper end of storage tank, the lower extreme and the nozzle intercommunication of conveying pipeline.

Preferably, the top seat is a stainless steel seat with a semicircular groove in the middle, and the radius of the semicircular groove is consistent with that of the roller.

Preferably, the through holes are uniformly formed around the mounting opening, the diameter of each through hole is smaller than that of the spring, and the diameter of the mounting opening is larger than that of the conveying pipe.

Preferably, the lower end of the rotating shaft is rotatably connected with the shell through a bearing, and the rotating shaft is vertically and rotatably arranged in the middle of the inner side of the shell through the matching of a shaft sleeve and the bearing.

Preferably, the distance between the center of the opening and the center of the outer casing is the same as the distance between the nozzle and the rotation center of the disk.

Preferably, the motor is fixedly arranged at the right part of the upper end of the supporting plate through a motor mounting seat, and the motor is a stepping motor or a servo motor.

The utility model discloses a technological effect and advantage: this 3D prints nozzle automatic switching control equipment, the motor rotates and drives a plurality of nozzles through the rim plate and rotate, drives each nozzle respectively and rotates the open-ended top, and the cooperation through the footstock carries out the 3D printing operation of each material with the ejecting opening of nozzle, avoids carrying out the printing operation of multiple material through a nozzle, and jam, the carbonization problem that causes have guaranteed product quality, save material.

Drawings

Fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is a schematic view of the connection of the housing to the support plate;

FIG. 3 is a bottom view of the connection between the wheel and the feed conveyor pipe;

FIG. 4 is a schematic view of the top seat and the roller.

In the figure: 1. a housing; 2. an opening; 3. an end plate; 4. a threaded hole; 5. a motor mounting seat; 6. a motor; 7. a gear; 8. a fluted disc; 9. a support plate; 10. a support; 11. a shaft sleeve; 12. a rotating shaft; 13. a top seat; 14. a nozzle; 15. a material storage tank; 16. a delivery pipe; 17. a roller mounting seat; 18. a roller; 19. a fixing plate; 20. a through hole; 21. a vertical rod; 22. a spring; 23. a material conveying nozzle; 24. an installation port; 25. a wheel disc; 26. a bearing; 131. a semicircular groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a 3D prints nozzle automatic switching control equipment as shown in figure 1-4, including shell 1, the left part of the lower extreme of shell 1 has seted up opening 2, a plurality of screw hole 4 are seted up to the inboard end plate 3 of fixed mounting on the lateral wall of shell 1 upper end, the inboard middle part of shell 1 has fixed mounting backup pad 9 through the support 10 of symmetry setting, the downside fixed mounting of the support 10 of the inboard right part of shell 1 has footstock 13, the middle part of backup pad 9 is rotated through axle sleeve 11 and is installed pivot 12, the upper end fixed mounting of pivot 12 has fluted disc 8, fluted disc 8 is connected with gear 7 transmission, gear 7 is connected with motor 6 rotation, the middle part fixed mounting of pivot 12 has rim plate 25, the inboard symmetry of rim plate 25 has seted up a plurality of through-holes 20, the inboard slidable mounting of through-hole 20 has montant 21, spring 22 has been cup jointed in the outside of montant 21, montant 21 fixed mounting is in the downside of

fixed plate

19, 19 fixed plate fixed mounting is in the lateral wall of conveying pipeline 16, a plurality of installing port 24 has been seted up to 25 inboard symmetries of rim plate, conveying pipeline 16 runs through and is provided with the inboard in installing port 24, the upper end and the storage tank 15 intercommunication of conveying pipeline 16, the side of storage tank 15 is provided with defeated material mouth 23, gyro wheel 18 is installed in the rotation of gyro wheel mount pad 17 in the upper end of storage tank 15, the lower extreme and the nozzle 14 intercommunication of conveying pipeline 16.

Specifically, the footstock 13 is a stainless steel seat with a semicircular groove 131 formed in the middle, and the radius of the semicircular groove 131 is consistent with that of the roller 18, so that when the corresponding nozzle 14 to be used rotates to the lower side of the footstock 13, the roller 18 is clamped into the semicircular groove 131 of the footstock 13, and the stability of the nozzle 14 is ensured.

Specifically, the through hole 20 is uniformly formed around the mounting hole 24, the diameter of the through hole 20 is smaller than that of the spring 22, the diameter of the mounting hole 24 is larger than that of the feed delivery pipe 16, the feed delivery pipe 16 is guaranteed to move downwards on the inner side of the mounting hole, the vertical rod 21 moves towards the inner side of the through hole 20, the spring 22 is compressed, buffering force provided by the spring 22 is utilized to guarantee smooth and stable movement of the feed delivery pipe 16, and the feed delivery pipe 16 is prevented from being inclined to affect the work of the nozzle 14.

Specifically, the lower end of the rotating shaft 12 is rotatably connected with the housing 1 through a bearing 26, and the rotating shaft 12 is vertically rotatably mounted in the middle of the inner side of the housing 1 through the matching of the shaft sleeve 11 and the bearing 26, so that the rotating shaft 12 is ensured to vertically rotate in the middle of the inner side of the housing 1, and the rotating shaft 12 is prevented from tilting reversely to influence the switching operation of the nozzle 14.

Specifically, the distance between the center of the opening 2 and the center of the outer shell 1 is consistent with the distance between the nozzle 14 and the rotation center of the wheel disc 25, so that after the nozzle 14 rotates to the left side of the rotating shaft 12, the nozzle 14 is just positioned above the middle part of the opening 2 and extends out of the opening 2 under the action of the top seat 13.

Specifically, motor 6 passes through 5 fixed mounting in the right part of the upper end of backup pad 9 of motor mount pad, and motor 6 is step motor or servo motor, guarantees the stability of 6 installations of motor to through step motor and servo motor's auto-lock nature, guarantee when motor 6 stall, motor 6 locks the position of fluted disc 8, avoids fluted disc 8 to drive 12 rotations of pivot and makes nozzle 14 displacements, causes 3D to print the failure.

The working principle is as follows: an end plate 3 on the outer side wall of a shell 1 is fixed on a mounting frame of a translation mechanism through a threaded hole 4 and a bolt in a matching mode, then molten materials are input into a material storage tank 15 through each material conveying nozzle 23, after 3D printing operation is started, a motor 6 is started, the motor 6 drives a gear 7 to rotate, the gear 7 drives a fluted disc 8 to rotate, the fluted disc 8 drives a rotating shaft 12 to rotate, the rotating shaft 12 drives a wheel disc 25 to rotate, the wheel disc 25 drives a nozzle 14 corresponding to the materials to be used to rotate above an opening 2, meanwhile, a roller 18 at the upper end of the material storage tank 15 rolls into a semicircular groove 131 in the middle of a top seat 13, so that a material conveying pipe 16 moves downwards on the inner side of the mounting opening 24, a fixing plate 19 on the outer side wall of the material conveying pipe 16 drives a vertical rod 21 to move towards the inner side of a through hole 20, thereby compressing a spring 22, the nozzle 14 gradually extends out of the, and performing 3D printing operation.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a 3D printing nozzle automatic switching control equipment, includes shell (1), its characterized in that: the left part of the lower end of the shell (1) is provided with an opening (2), a plurality of threaded holes (4) are formed in the inner side of an end plate (3) fixedly installed on the outer side wall of the upper end of the shell (1), a supporting plate (9) is fixedly installed in the middle of the inner side of the shell (1) through a support (10) symmetrically arranged, a top seat (13) is fixedly installed on the lower side of the support (10) on the inner right part of the shell (1), a rotating shaft (12) is rotatably installed in the middle of the supporting plate (9) through a shaft sleeve (11), a fluted disc (8) is fixedly installed at the upper end of the rotating shaft (12), the fluted disc (8) is in transmission connection with a gear (7), the gear (7) is rotatably connected with a motor (6), a wheel disc (25) is fixedly installed in the middle of the rotating shaft (12), and a plurality, the inboard slidable mounting of through-hole (20) has montant (21), spring (22) have been cup jointed in the outside of montant (21), montant (21) fixed mounting is in the downside of fixed plate (19), fixed plate (19) fixed mounting is in the lateral wall of conveying pipeline (16), a plurality of installing port (24) have been seted up to rim plate (25) inboard symmetry, conveying pipeline (16) run through and are provided with the inboard in installing port (24), the upper end and storage tank (15) the intercommunication of conveying pipeline (16), the side of storage tank (15) is provided with defeated material mouth (23), gyro wheel (18) are installed in the rotation of gyro wheel mount pad (17) in the upper end of storage tank (15), the lower extreme and nozzle (14) the intercommunication of conveying pipeline (16).

2. The automatic switching device for the 3D printing nozzle according to claim 1, wherein: the top seat (13) is a stainless steel seat with a semicircular groove (131) formed in the middle, and the radius of the semicircular groove (131) is consistent with that of the roller (18).

3. The automatic switching device for the 3D printing nozzle according to claim 1, wherein: the through holes (20) are uniformly formed around the mounting opening (24), the diameter of the through holes (20) is smaller than that of the springs (22), and the diameter of the mounting opening (24) is larger than that of the delivery pipe (16).

4. The automatic switching device for the 3D printing nozzle according to claim 1, wherein: the lower end of the rotating shaft (12) is rotatably connected with the shell (1) through a bearing (26), and the rotating shaft (12) is vertically rotatably installed in the middle of the inner side of the shell (1) through the matching of a shaft sleeve (11) and the bearing (26).

5. The automatic switching device for the 3D printing nozzle according to claim 1, wherein: the distance between the center of the opening (2) and the center of the shell (1) is consistent with the distance between the rotating centers of the nozzle (14) and the wheel disc (25).

6. The automatic switching device for the 3D printing nozzle according to claim 1, wherein: the motor (6) is fixedly arranged at the right part of the upper end of the supporting plate (9) through a motor mounting seat (5), and the motor (6) is a stepping motor or a servo motor.