CN112590207B

CN112590207B - But quick replacement's extruder system and 3D printer

Info

Publication number: CN112590207B
Application number: CN202011209909.XA
Authority: CN
Inventors: 廖力达; 凌宇亮
Original assignee: Changsha University of Science and Technology
Current assignee: Changsha University of Science and Technology
Priority date: 2020-11-03
Filing date: 2020-11-03
Publication date: 2022-10-14
Anticipated expiration: 2040-11-03
Also published as: CN112590207A

Abstract

The invention discloses a quick-replaceable extruder system, which comprises: a base frame; the lower end of the extrusion pipe is provided with a nozzle; the radiating seat partially surrounds the outer peripheral wall of the extrusion pipe, is detachably connected to the base frame and is matched with the base frame to limit the extrusion pipe. According to the invention, the limit installation of the extruded pipe can be completed by matching the detachable radiating seat with the base frame, when the extruded pipe is blocked or has other problems, the extruded pipe can be replaced or maintained only by detaching the radiating seat, the structure is simple, and the detachment, replacement or maintenance is simpler and more convenient.

Description

But quick replacement's extruder system and 3D printer

Technical Field

The invention relates to 3D printing equipment, in particular to an extruder system capable of being replaced quickly and a 3D printer.

Background

3D printing technology is primarily an ever-increasing process, with raw materials laminated under computer control to create three-dimensional objects. However, in the use process of the 3D printer, external fragments often block the nozzle, too much plastic deposits in the extruder, or the extruder is blocked due to reasons such as uneven heat dissipation of the extruder, and the extruder needs to be disassembled for replacement. The traditional extruder has a complex structure and is difficult to disassemble and replace.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides an extruder system capable of being rapidly replaced, and disassembly and replacement are convenient.

A quick-change extruder system according to an embodiment of the first aspect of the invention comprises: a base frame; the lower end of the extrusion pipe is provided with a nozzle; the radiating seat partially surrounds the outer peripheral wall of the extrusion pipe, is detachably connected to the base frame and is matched with the base frame to limit the extrusion pipe.

The quick-replaceable extruder system provided by the embodiment of the invention has the following technical effects: can accomplish the spacing installation to the extrusion pipe through detachable radiating seat cooperation bed frame, when the extrusion pipe appears blockking up or other problems, only need dismantle the radiating seat and can change or maintain the extrusion pipe, the structure is retrencied, dismantles, changes or maintains convenience simple more.

According to some embodiments of the invention, the upper end of the base frame extends forwards to form a mounting side plate, the mounting side plate is provided with a limiting notch with an opening at one side, the upper end part of the extrusion tube is embedded into the limiting notch, the peripheral wall of the extrusion tube is provided with two limiting convex rings arranged at intervals corresponding to the upper surface and the lower surface of the mounting side plate, and the two limiting convex rings are respectively attached to the upper surface and the lower surface of the mounting side plate to realize axial limiting; the heat dissipation seat is provided with a tightly-embedded plate embedded into the limiting notch, and the tightly-embedded plate is attached to the outer peripheral wall part of the extrusion pipe and used for radially limiting the extrusion pipe.

According to some embodiments of the invention, the tight embedding plate is embedded between the two limit convex rings, and the outer end of the tight embedding plate is provided with an arc groove matched with the outer peripheral wall of the extrusion pipe.

According to some embodiments of the present invention, the heat dissipation seat is attached to the front surface of the base frame, and the attachment surface of the heat dissipation seat is provided with an insertion portion into which the heat dissipation seat is inserted.

According to some embodiments of the present invention, the mounting side plate is provided with a through hole, the heat sink is provided with a limiting hole aligned with the through hole, and the mounting side plate is provided with a limiting post aligned with the through hole; the limiting column is connected with an elastic piece for pushing the end part of the limiting column to penetrate through the through hole and be inserted into the limiting hole.

According to some embodiments of the present invention, the mounting side plate extends upward to form a mounting plate, a guide plate is disposed on the front side of the upper end of the mounting plate, the guide plate is provided with a guide hole for the limiting column to pass through, a protruding shaft with a contour larger than that of the through hole is disposed in the middle of the limiting column, the elastic member is a compression spring sleeved on the limiting column, and the compression spring is disposed between the protruding shaft and the guide plate.

According to some embodiments of the present invention, the heat sink is provided with an attachment plate attached to the mounting side plate at an upper end thereof, and the through hole and the fastening plate are both provided on the attachment plate.

According to some embodiments of the invention, the sliding track and the sliding groove are dovetail-shaped in cross section.

According to some embodiments of the invention, the embedded part is a slide rail extending left and right, and the front surface of the base frame is provided with a sliding groove matched with the slide rail.

According to a second aspect embodiment of the invention, a 3D printer comprises the above described quick-change extruder system.

The 3D printer provided by the embodiment of the invention at least has the following technical effects: the structure is simplified, and the disassembly, the replacement or the maintenance are simpler and more convenient.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of an installation structure of an embodiment of the present invention;

FIG. 2 is a schematic diagram of an exploded state structure of an embodiment of the present invention;

FIG. 3 is an exploded view of another embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a heat sink;

fig. 5 is a cross-sectional view of an embodiment of the present invention.

Reference numerals:

the structure comprises a base frame 100, a mounting side plate 110, a limiting notch 111, a through hole 112, a mounting plate 120, a guide plate 121, a guide hole 122, a sliding groove 130 and a pulley 140;

an extrusion pipe 200, a nozzle 210, a limit convex ring 220, a radiating fin 230 and a heating block 240; the heat sink 300, the tight embedding plate 310, the arc groove 311, the limiting hole 320, the attaching plate 330, the semi-arc surface 340, and the embedding part 350;

the heat dissipating fan comprises a limiting column 400, a protruding shaft 410, a pressure spring 420, a first heat dissipating fan 500 and a second heat dissipating fan 600.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Referring to fig. 1 to 5, a quick-replaceable extruder system according to an embodiment of the present invention includes a base frame 100, an extrusion tube 200, and a heat sink 300.

The base frame 100 is integrally formed in a plate shape, and a pulley 140 is disposed at a rear side of the base frame 100 to horizontally move when being installed in a 3D printer. The extrusion pipe 200 is integrally in a circular pipe shape, the lower end of the extrusion pipe 200 is provided with a nozzle 210, the extrusion pipe 200 is hollow inside and used for feeding printed materials, and the materials are extruded from the nozzle at the lower end. The heat dissipation seat 300 partially surrounds the outer peripheral wall of the extrusion pipe 200, the heat dissipation seat 300 is detachably connected to the base frame 100, and the heat dissipation seat 300 is matched with the base frame 100 to limit the extrusion pipe 200. The limiting installation of the extruded tube 200 can be completed by matching the detachable radiating seat 300 with the base frame 100, when the extruded tube 200 is blocked or has other problems, the extruded tube can be replaced or maintained only by detaching the radiating seat, the structure is simplified, and the detachment, the replacement or the maintenance are simpler and more convenient.

Conventionally, the outer peripheral wall of the middle portion of the extruded tube 200 is provided with a heat sink 230, and a heating block 240 is provided between the heat sink 230 and the nozzle 210. As shown in fig. 4, the heat sink 300 has a semi-circular arc surface 340 surrounding the heat sink 230 for heat dissipation.

In some embodiments of the present invention, the upper end of the base frame 100 extends forward to form a mounting side plate 110, the mounting side plate 110 is provided with a limiting notch 111 with an opening at one side, as shown in fig. 2 and 3, the limiting notch 111 opens to the right, the upper end portion of the extrusion tube 200 is inserted into the limiting notch 111, two limiting convex rings 220 are arranged on the outer peripheral wall of the extrusion tube 200 and corresponding to the upper and lower surfaces of the mounting side plate 110, the limiting convex rings 220 protrude out of the peripheral wall of the extrusion tube 200, and the two limiting convex rings 220 are respectively attached to the upper and lower surfaces of the mounting side plate 110 to achieve axial limiting, that is, the mounting side plate 110 is inserted between the two limiting convex rings 220 to achieve axial limiting and hanging of the extrusion tube 200. The radiating seat 300 is provided with an embedded tight plate 310 embedded into the limit notch 111, the embedded tight plate 310 is attached to the peripheral wall part of the extrusion pipe 200 and used for radially limiting the extrusion pipe 200, and the embedded tight plate 310 is matched with the limit notch 111 to clamp the extrusion pipe 200 to realize radial limitation.

Referring to fig. 1 to 3, in some embodiments of the present invention, the fastening plate 310 is inserted between the two retaining flanges 220 to reinforce the axial retention, and the outer end of the fastening plate 310 is provided with an arc groove 311 adapted to the outer peripheral wall of the extruded tube 200. The limiting notch 111 is internally provided with a partial arc profile of the peripheral wall of the extruded pipe 200, and is matched with the arc groove 311 to completely wrap the position of the extruded pipe 200, so that a good limiting and positioning effect is achieved.

Referring to fig. 3 and 4, in some embodiments of the present invention, a heat sink 300 is attached to the front surface of the base frame 100, and an insertion portion 350 for inserting the heat sink 300 is disposed on the attached surface of the heat sink 300. The embedding part 350 is embedded in the heat sink 300 to realize the positioning and installation of the heat sink 300 and the base frame 100, and to play a certain supporting and limiting effect.

Referring to fig. 2 and 3, in some embodiments of the present invention, the mounting side plate 110 is provided with a through hole 112, the heat sink 300 is provided with a limiting hole 320 aligned with the through hole 112, and the mounting side plate 110 is provided with a limiting post 400 aligned with the through hole 112; spacing post 400 is connected with an elastic component, a tip for promoting spacing post 400 passes perforation 112 and inserts in spacing hole 320, insert spacing hole 320 through spacing post 400, realize spacing to radiating seat 300, the supporting role of embedding portion 350 is deuterogamied, realize the connection dismantled to radiating seat 300, and can realize the dismantlement of radiating seat 300 through the spacing post 400 of pull, conveniently dismantle radiating seat 300, after radiating seat 300 dismantles, extruded tube 200 just also can take out easily thereupon, make change and installation spare part simpler, and the installation accuracy is high.

In some embodiments of the present invention, the mounting plate 120 extends upward from the mounting side plate 110, a guide plate 121 is disposed at the front side of the upper end of the mounting plate 120, the guide plate 121 is provided with a guide hole 122 for the limiting column 400 to pass through, and the guide hole 122 is matched with the limiting column 400 so that the limiting column 400 can lift along the guide hole 122 to realize lifting and guiding. The middle part of the limiting column 400 is provided with a protruding shaft 410 with a contour larger than that of the through hole 112, the elastic element is a pressure spring 420 sleeved on the limiting column 400, the pressure spring 420 is positioned between the protruding shaft 410 and the guide plate 121, and two ends of the pressure spring 420 are abutted against the protruding shaft 410 and the guide plate 121 to push the bottom end of the limiting column 400 to penetrate through the through hole 112 and be inserted into the limiting hole 320. The axes of the guide hole 122, the limiting hole 320 and the through hole 112 are parallel, and in the present embodiment, the axes of the guide hole 122, the limiting hole 320 and the through hole 112 are collinear. The guide plate 121, the mounting plate 120 and the mounting side plate 110 may be integrally formed or may be fixedly connected by welding or fastening.

In a further embodiment of the present invention, the heat sink 300 has an engaging plate 330 attached to the mounting side plate 110, and the through hole 112 and the fastening plate 310 are both disposed on the engaging plate 330. The attachment plate 330 can have a certain positioning function, and when the attachment plate 330 is installed, only the attachment plate 330 is attached to the fastening plate 310, so that one-dimensional positioning can be realized.

Referring to fig. 3 and 4, in some embodiments of the present invention, the embedding portion 350 is a sliding rail extending left and right, the front surface of the base frame 100 is provided with a sliding groove 130 matching with the sliding rail, when the base frame is installed, the sliding rail is embedded in the sliding groove 130 and slides in along the sliding groove 130 until the limiting hole 320 and the through hole 112 are aligned, so that the bottom end of the limiting post 400 is inserted into the limiting hole 320 to limit the heat sink 300.

In a further embodiment of the present invention, the cross sections of the sliding rails and the sliding grooves 130 are dovetail-shaped, and the dovetail-shaped sliding rails and sliding grooves can play a better limiting role to prevent the heat sink 300 from overturning and falling.

It can be understood that, in order to enhance the heat dissipation effect, the first heat dissipation fan 500 is installed at a side of the heat sink 300 facing away from the extruded tube 200, and the second heat dissipation fan 600 is installed at a side of the base frame 100 facing away from the heat sink 300 at the extruded tube 200.

The invention also provides a 3D printer which comprises the quick-replaceable extruder system and has the advantages of convenience in part replacement and maintenance.

In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A quick change extruder system, comprising:

a base frame (100);

an extrusion pipe (200) provided with a nozzle (210) at the lower end;

the heat dissipation seat (300) partially surrounds the outer peripheral wall of the extrusion pipe (200), is detachably connected to the base frame (100), and is matched with the base frame (100) to limit the extrusion pipe (200);

the upper end of the base frame (100) extends forwards to form a mounting side plate (110), the mounting side plate (110) is provided with a limiting notch (111) with an opening on one side, the upper end part of the extrusion pipe (200) is embedded into the limiting notch (111), the outer peripheral wall of the extrusion pipe (200) is provided with two limiting convex rings (220) arranged at intervals corresponding to the upper surface and the lower surface of the mounting side plate (110), and the two limiting convex rings (220) are respectively attached to the upper surface and the lower surface of the mounting side plate (110) to realize axial limiting; the heat dissipation seat (300) is provided with a tight embedding plate (310) embedded into the limit notch (111), and the tight embedding plate (310) is partially attached to the outer peripheral wall of the extrusion pipe (200) and used for radially limiting the extrusion pipe (200).

2. The quick change extruder system of claim 1, wherein: the tight embedding plate (310) is embedded between the two limiting convex rings (220), and the outer end of the tight embedding plate (310) is provided with an arc groove (311) matched with the outer peripheral wall of the extrusion pipe (200).

3. The quick-change extruder system of claim 1 or 2, wherein: the heat dissipation seat (300) is attached to the front surface of the base frame (100), and an embedding portion (350) embedded into the heat dissipation seat (300) is arranged on the attached surface of the heat dissipation seat (300).

4. The quick-change extruder system of claim 3, wherein: the mounting side plate (110) is provided with a through hole (112), the heat radiating seat (300) is provided with a limiting hole (320) aligned with the through hole (112), and the mounting side plate (110) is provided with a pair of limiting columns (400) of Ji Chuankong (112); the limiting column (400) is connected with an elastic piece used for pushing the end part of the limiting column (400) to penetrate through the through hole (112) and be inserted into the limiting hole (320).

5. The quick change extruder system of claim 4, wherein: installation curb plate (110) extend upward and have a mounting panel (120), mounting panel (120) upper end front side is equipped with a deflector (121), deflector (121) are equipped with guiding hole (122) that supply spacing post (400) to pass, spacing post (400) middle part is equipped with protruding axle (410) that an outline is greater than perforation (112), the elastic component is established pressure spring (420) on spacing post (400) for the cover, pressure spring (420) are located between protruding axle (410) and deflector (121).

6. The quick-change extruder system of claim 4, wherein: the upper end of the heat dissipation seat (300) is provided with an attaching plate (330) attached to the installation side plate (110), and the through hole (112) and the fastening embedding plate (310) are arranged on the attaching plate (330).

7. The quick change extruder system of claim 3, wherein: the embedding part (350) is a slide rail extending left and right, and a sliding groove (130) matched with the slide rail is formed in the front surface of the base frame (100).

8. The quick change extruder system of claim 7, wherein: the cross sections of the sliding rails and the sliding grooves (130) are both dovetail-shaped.

9. A3D printer which characterized in that: comprising the quick-change extruder system of any one of claims 1 to 8.