CN111300825B

CN111300825B - 3D printer feed assembly

Info

Publication number: CN111300825B
Application number: CN201911040972.2A
Authority: CN
Inventors: 朱永书; 金志敏
Original assignee: Jiangsu Ouring 3d Technology Co ltd
Current assignee: Jiangsu Ouring 3d Technology Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2022-03-11
Anticipated expiration: 2039-10-29
Also published as: CN111300825A

Abstract

The invention relates to the technical field of 3D printing, in particular to a feeding assembly of a 3D printer, and aims to solve the problem that a charging tray can rotate reversely by a certain angle due to the withdrawing of a wire feeder in the printing process in the prior art, and even materials in the charging tray can emerge from the charging tray. Through the setting of supporting sleeve for there is frictional force between hanging material axle and the charging tray, when hanging material axle rotation in-process, through the frictional force that supporting sleeve provided, make the charging tray can realize rotating, thereby realized the function of blowing.

Description

3D printer feed assembly

Technical Field

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

Background

The 3D printing technology is present in the mid-90 s of the 20 th century and is actually the latest rapid prototyping device using technologies such as photocuring and paper lamination. The printing machine is basically the same as the common printing working principle, the printing machine is filled with liquid or powder and other printing materials, the printing materials are overlapped layer by layer under the control of a computer after being connected with the computer, and finally, a blueprint on the computer is changed into a real object. This printing technique is called a 3D stereoscopic printing technique; different 'printing materials' such as metal, pottery, plastics, sand are equipped with in the 3D printer, are the real raw and other materials, and after the printer was connected with the computer, can superpose layer by layer the 'printing material' through computer control, become the blue picture on the computer finally and become the real thing. Colloquially, a 3D printer is a device that can "print" out real 3D objects, such as printing a robot, printing a toy car, printing various models, even food, and so on. The generic name "printer" refers to the technical principle of a common printer, since the process of layered processing is very similar to inkjet printing.

While the general mechanical discharging mechanism mainly has active discharging and passive discharging, the discharging mechanism of the 3D printer is mainly designed into passive discharging due to the limitation of the machine type or the control requirement. Because the drive that the 3D printer send a silk is that step motor output shaft directly drives and send a gear to rotate, its drive power is limited, and the blowing charging tray generally relies on a pair of bearing to support, and friction torque is less, and the machine of sending a silk pumpback of even printing in-process can make the charging tray reverse certain angle, can make the material in the charging tray emit the charging tray even.

Disclosure of Invention

Therefore, the invention aims to overcome the defect that the feed tray can be reversely rotated by a certain angle even the material in the feed tray emerges from the feed tray in the process of withdrawing the wire feeder in the printing process in the prior art, and provides the feeding assembly of the 3D printer.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a 3D printer feed subassembly for installation 3D prints charging tray, including the hanging material support and with the synchronous pivoted axis of rotation of hanging material support, axis of rotation periphery cover is equipped with the hanging material axle, the charging tray cover is established the periphery of hanging material axle, it is in to be provided with the butt on the hanging material axle the support cover on the charging tray center shaft hole lateral wall, the hanging material axle with the axis of rotation relative rotation sets up.

Preferably, the number of the support sleeves is at least two, and the two support sleeves are respectively positioned at two ends of the material tray in the axial direction.

Preferably, the support cover is provided with two, two the support cover contains axle sleeve position and shaft shoulder position respectively, axle sleeve position and shaft shoulder position an organic whole set up, the inboard contact of axle sleeve position and hanging material axle external diameter just has great frictional force, shaft shoulder position and charging tray internal diameter contact just have great frictional force, the charging tray both sides receive the shaft shoulder position of support cover to restrict its axial activity.

Preferably, the support sleeve is detachably fixed on the hanging shaft, and the outer diameter of the support sleeve is matched and arranged according to the inner diameter of the material tray.

Preferably, the rotating shaft is far away from one end of the hanging material support is provided with a damping shaft sleeve, the damping shaft sleeve is fixedly arranged with the rotating shaft, and the periphery of the damping shaft sleeve and the inner side wall of the hanging material shaft are arranged in a clearance mode.

Preferably, the damping grease which is mutually abutted with the inner side wall of the hanging material shaft is arranged on the periphery of the damping shaft sleeve.

Preferably, two ends of the rotating shaft are respectively provided with a bearing which is mutually abutted with the inner wall of the hanging material shaft.

Preferably, the hanging bracket is provided with a locking bolt, and the locking bolt penetrates through the hanging bracket and is inserted into the rotating shaft.

The technical scheme of the invention has the following advantages:

1. according to the feeding assembly of the 3D printer, friction force exists between the hanging shaft and the material tray through the arrangement of the supporting sleeve, and when the hanging shaft rotates, the material tray can rotate through the friction force provided by the supporting sleeve, so that the material discharging function is realized.

2. According to the feeding assembly of the 3D printer, the supporting sleeves arranged at the two ends of the charging tray in the axial direction enable the two ends of the charging tray in the axial direction to be uniformly driven in the process of applying driving force to the charging tray.

3. The feeding assembly of the 3D printer is arranged at two ends of the material tray in the axial direction and is mutually abutted with the end faces of the two ends of the material tray in the axial direction. Through the setting of shaft shoulder part, fix the charging tray between two shaft shoulder parts of two support covers to avoid rotating the in-process, the charging tray slides along the horizontal direction, leads to the blowing inhomogeneous.

4. According to the feeding assembly of the 3D printer, the damping shaft sleeve is abutted with the hanging shaft, so that friction force is applied to the side wall of the inner side of the hanging shaft through the damping shaft sleeve and converted into driving force in the rotating process of the rotating shaft, and the hanging shaft can be driven to rotate in the rotating process of the rotating shaft.

5. According to the feeding assembly of the 3D printer, the material hanging support and the rotating shaft are fixed through the locking bolt, and the material hanging support and the rotating shaft can synchronously rotate.

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, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a feeding assembly of a 3D printer according to an embodiment of the invention;

fig. 2 is an enlarged schematic view of a portion a of fig. 1.

Description of reference numerals:

1. hanging a material bracket; 11. a rotating shaft; 111. a damping shaft sleeve; 112. damping grease; 113. positioning bolts; 114. a bearing; 12. locking the bolt; 2. hanging a material shaft; 21. a support sleeve; 211. a shaft sleeve member; 212. a shoulder member; 213. fixing the bolt; 3. and (7) a material tray.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1, an object of the present invention is to provide a feeding assembly for a 3D printer, which is used for mounting a tray 3 for 3D printing, and includes a hanging bracket 1 located at one end and a rotating shaft 11 rotating synchronously with the hanging bracket 1, wherein a hanging shaft 2 is sleeved on the periphery of the rotating shaft 11, the tray 3 is sleeved on the periphery of the hanging shaft 2, a supporting sleeve 21 is further disposed between the hanging shaft 2 and the tray 3, the supporting sleeve 21 is disposed between the hanging shaft 2 and the central shaft hole sidewall of the tray 3 and is abutted against the peripheral sidewall of the hanging shaft 2 and the central shaft hole sidewall of the tray 3, and in this embodiment, the hanging shaft 2 and the rotating shaft 11 are relatively rotatably disposed. Through the setting of supporting sleeve 21 for there is frictional force between hanging material axle 2 and the charging tray 3, rotates the in-process when hanging material axle 2, through the frictional force that supporting sleeve 21 provided, makes charging tray 3 can realize rotating, thereby has realized the function of blowing.

Referring to fig. 1, at least two support sleeves 21 are provided for being embedded between the inner walls of the shaft holes of the material hanging shaft 2 and the material tray 3, and the two support sleeves 21 are respectively located at two ends of the material tray 3 in the axial direction. The support sleeves 21 arranged at the two ends of the charging tray 3 in the axial direction enable the two ends of the charging tray 3 in the axial direction to be driven uniformly in the process of applying driving force to the charging tray 3.

Referring to fig. 1 and 2, in the present embodiment, the two support sleeves 21 respectively include a sleeve part 211 and a shoulder part 212, where the sleeve part 211 and the shoulder part 212 are integrally disposed, and in other embodiments, the sleeve part 211 and the shoulder part 212 may be disposed as two bodies and fixed by gluing or bolts. In this embodiment, the boss member 211 is provided between the central axial hole of the tray 3 and the hanging shaft 2 to abut against the side wall of the axial hole of the tray 3 and the outer periphery of the hanging shaft 2, and the shoulder members 212 are provided at both ends in the axial direction of the tray 3 to abut against the end faces at both ends in the axial direction of the tray 3. Through the setting of shaft shoulder part 212, fix charging tray 3 between two shaft shoulder parts 212 of two support covers 21 to avoid rotating the in-process, charging tray 3 slides along the horizontal direction, leads to the blowing inhomogeneous.

In this embodiment, in order to further fix the position of the tray 3, please refer to fig. 1 and fig. 2, the support sleeve 21 near one side of the hanging material support 1 is fixedly disposed on the hanging material shaft 2, and the other support sleeve 21 opposite to the support sleeve is detachably fixed on the hanging material shaft 2.

In the present embodiment, in order to realize the synchronous rotation between the hanging shaft 2 and the rotating shaft 11, referring to fig. 1 and 2, a damping shaft sleeve 111 is disposed at one end of the rotating shaft 11 away from the hanging bracket 1, wherein the damping shaft sleeve 111 is fixed on the rotating shaft 11, and the outer periphery of the damping shaft sleeve 111 and the inner side wall of the hanging shaft 2 are disposed in contact with each other. In the present embodiment, the damper bushing 111 is provided with a positioning pin 113, and the positioning pin 113 is screwed through the damper bushing 111 and inserted into the rotating shaft 11. Through the mutual butt between damping axle sleeve 111 and the hanging material axle 2 for 11 rotation in-processes of axis of rotation, exert frictional force and convert into drive power to hanging material axle 2 inboard lateral wall through damping axle sleeve 111, thereby make 11 rotation in-processes of axis of rotation to drive the rotation of hanging material axle 2.

In the present embodiment, in order to further increase the driving force between the rotating shaft 11 and the hanging shaft 2, referring to fig. 1 and 2, a damping grease 112 is further provided on the outer periphery of the damping sleeve 111. The friction force between the damping shaft sleeve 111 and the hanging material shaft 2 is further improved through the arrangement of the damping grease 112.

In the process of rotating the tray 3, the tray 3 sometimes needs to rotate, and here, referring to fig. 1, bearings 114 abutting against the inner side wall of the hanging shaft 2 are respectively provided at both ends of the rotating shaft 11.

In the present embodiment, in order to realize the synchronous rotation between the rotating shaft 11 and the hanging material bracket 1, please refer to fig. 1, a locking bolt 12 is further disposed on the hanging material bracket 1, wherein the locking bolt 12 is threaded through the hanging material bracket 1 and inserted on the rotating shaft 11. Through the setting of locking bolt 12, fix between hanging material support 1 and axis of rotation 11 to make and hang and to rotate in step between material support 1 and the axis of rotation 11.

The feeding assembly of the 3D printer is provided with a damping structure on the basis of a passive feeding structure, and the damping structure comprises a damping shaft sleeve 111, damping grease 112 and a support sleeve 21 between a material tray 3 and a material hanging shaft 2. Due to the damping effect of the damping grease 112, a certain driving force is needed to rotate the material tray 3, so that the material discharging effect is achieved.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. The utility model provides a 3D printer feed subassembly for charging tray (3) that installation 3D printed, its characterized in that: the material hanging device comprises a material hanging bracket (1) and a rotating shaft (11) which synchronously rotates with the material hanging bracket (1), wherein a material hanging shaft (2) is sleeved on the periphery of the rotating shaft (11), a material tray (3) is sleeved on the periphery of the material hanging shaft (2), a supporting sleeve (21) which is abutted against the side wall of a central shaft hole of the material tray (3) is arranged on the material hanging shaft (2), and the material hanging shaft (2) and the rotating shaft (11) are arranged in a relative rotating mode;

keep away from axis of rotation (11) hang material support (1) one end and be provided with damping axle sleeve (111), damping axle sleeve (111) periphery be provided with hang material axle (2) inboard lateral wall damping grease (112) of mutual butt.

2. The 3D printer feed assembly of claim 1, wherein: the number of the support sleeves (21) is at least two, and the two support sleeves (21) are respectively positioned at two ends of the material tray (3) in the axial direction.

3. The 3D printer feed assembly of claim 2, wherein: support cover (21) and be provided with two, two support cover (21) contain axle sleeve position (211) and shaft shoulder position (212) respectively, axle sleeve position (211) and shaft shoulder position (212) an organic whole set up, axle sleeve position (211) inboard and hanging material axle (2) external diameter contact and have great frictional force, shaft shoulder position (212) and charging tray (3) internal diameter contact just have great frictional force, charging tray (3) both sides receive shaft shoulder position (212) of support cover (21) to restrict its axial activity.

4. The 3D printer feed assembly of claim 3, wherein: the supporting sleeve (21) is detachably fixed on the hanging shaft (2), and the outer diameter of the supporting sleeve (21) is matched and arranged according to the inner diameter of the material tray (3).

5. The 3D printer feed assembly of claim 1, wherein: the periphery of the damping shaft sleeve (111) and the inner side wall of the hanging shaft (2) are arranged in a clearance mode.

6. The 3D printer feed assembly of claim 5, wherein: and bearings (114) which are mutually abutted with the inner wall of the hanging shaft (2) are respectively arranged at two ends of the rotating shaft (11).

7. The 3D printer feed assembly of claim 6, wherein: the hanging material support (1) is provided with a locking bolt (12), and the locking bolt (12) penetrates through the hanging material support (1) and is inserted into the rotating shaft (11).