CN220946714U

CN220946714U - Automatic preheating device for fiber materials of 3D printer

Info

Publication number: CN220946714U
Application number: CN202322428272.9U
Authority: CN
Inventors: 杨为杰
Original assignee: Qingdao Rongbang Technology Co ltd
Current assignee: Qingdao Rongbang Technology Co ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-05-14
Anticipated expiration: 2033-09-07

Abstract

The utility model provides an automatic fiber material preheating device of a 3D printer, which comprises a control box and an inner tube, wherein a heating wire is wound on the outer wall of the inner tube, a PCB (printed circuit board) is arranged in the control box, a control panel is arranged on the front end face of the control box, threaded interfaces are arranged on the upper end face and the lower end face of the control box, an upper end cover is connected with the upper threaded interfaces in a threaded manner, the inner tube is connected with the inner cavity of the upper end cover in a threaded manner, an outer tube is connected with the lower threaded interfaces in a threaded manner, heat insulation slurry is filled in an interlayer of the outer tube and the inner tube, the lower end of the outer tube is narrowed to form a threaded connection part, the threaded connection part is connected with a lower end cover in a threaded manner, and the inner tube is embedded into the inner cavity of the lower end cover. Before the fiber material enters the printing port, the fiber material is heated uniformly through the heating wire at the outer side of the inner tube, then enters the printing head feeding port, the heating wire is used for lifting the temperature of the material from room temperature to a temperature close to the discharging temperature, the preheating control of the continuous fiber material during 3D printing is realized, the working efficiency and the printing success rate are improved, and the printing quality is improved.

Description

Automatic preheating device for fiber materials of 3D printer

Technical Field

The utility model belongs to the technical field of 3D printers, and particularly relates to an automatic fiber material preheating device of a 3D printer.

Background

The 3D printer is a three-dimensional object rapid prototyping technology for converting a design file generated by a computer into a real product, and is one of the best technologies for manufacturing real objects at present. The 3D printer mainly comprises 3D printer accessories such as an X-Y-Z motion system, a nozzle structure, a numerical control module, a forming environment module and the like.

The 3D printer lacks the preheating effect at the present stage, and in the printing process, the hot melt shaping of raw materials is by the heating system of integration in the nozzle structure entirely, and nozzle structure volume is limited, in order to guarantee the thermoforming work, makes its heating rate slow.

The 3D printing forming of the continuous fiber material needs a higher printing temperature than that of a common material, and as the printing process is usually carried out at room temperature, the continuous fiber material is easy to generate material deformation, uneven heating, printing failure and the like if the continuous fiber material is directly lifted to the printing temperature from the room temperature in the printing process. Therefore, a material to be subjected to a printing process is subjected to a preliminary temperature raising process in the printing process. The current 3D printer does not have related functions, so development is required.

Disclosure of utility model

Aiming at the defects pointed out in the background art, the utility model aims to provide an automatic pre-heating device for a fiber material of a 3D printer, which is used for carrying out pre-heating treatment on the material which is about to enter a printing process so as to improve the printing success rate and the printing quality.

In order to achieve the above object, the technical scheme of the present utility model is as follows: the utility model provides an automatic preheating device of 3D printer fibrous material, includes control box and inner tube, control box left end face is provided with lead terminal, the winding of inner tube outer wall has the heater, the inside PCB board that is provided with connection heater and lead terminal of control box, control box front end face is provided with the control panel who connects the PCB board, control box up and down terminal face is provided with the screwed connection of indent respectively, both sides screwed connection is linked together through central through-hole, the top screwed connection has the upper end cover, inner tube upper end passes central through-hole and the inner chamber threaded connection of upper end cover from bottom to top, the upper end cover upper end is provided with the feed port just to inner tube inner chamber, the below screwed connection has the outer tube, the outer tube cover covers the heater in the inner tube outside, the intermediate layer intussuseption of outer tube and inner tube is filled with thermal-insulated thick liquids, thermal-insulated thick liquids cladding heater, the narrow threaded connection portion that forms of outer tube lower extreme, threaded connection portion threaded connection has the inner tube lower end cover, inner tube lower extreme embedding lower end cover's inner chamber, the lower extreme is just to the inner tube, the lower extreme is provided with the discharge port just to the receiving hole.

As a preferable technical scheme, the inner tube is sleeved with the sealing cover, the sealing cover is embedded into the upper end of the outer tube, and the side of the sealing cover is provided with a threading hole for routing the heating wire.

As a preferable technical scheme, the lower end of the sealing cover is an inclined surface, and the inclined surface inclines to the axle center of the sealing cover.

As a preferable technical scheme, an outer check ring is arranged above the outer pipe and abuts against the lower outer wall of the control box, an inner check ring is arranged below the inner pipe and abuts against the inner wall of the threaded connection portion.

As a preferable technical scheme, the control panel comprises an LED digital display screen arranged on the front end face of the control box, and a button is arranged below the LED digital display screen.

As a preferable technical scheme, the right end face of the control box is provided with a supporting plate.

After the technical scheme is adopted, the utility model has the beneficial effects that:

before the fiber material enters the printing port, the fiber material is heated uniformly through the heating wire at the outer side of the inner tube, then enters the printing head feeding port, the heating wire is used for lifting the temperature of the material from the room temperature to the temperature close to the discharging temperature, the external LED digital display screen can display the internal temperature of the inner tube, the heating wire is controlled through the button, the preheating control of the continuous fiber material during 3D printing is realized, the working efficiency and the printing success rate are improved, and the printing quality is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the internal structure of the outer tube;

FIG. 3 is a schematic view of the installation of an outer tube;

fig. 4 is a schematic structural view of the outer tube.

In the figure: 1. a support plate; 2. the control box 21, the control panel 22, the lead terminal 23 and the threaded interface; 3. an upper end cap; 4. an outer tube 41, an outer retainer 42 and a threaded connection part; 5. a lower end cap; 6. an inner pipe, 61, an inner retainer ring; 7. a heating wire; 8. sealing cover, 81, threading hole.

Detailed Description

Features and exemplary embodiments of various aspects of the present utility model will be described in detail below, and in order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in further detail below with reference to the accompanying drawings and the detailed embodiments. It should be understood that the specific embodiments described herein are merely configured to illustrate the utility model and are not configured to limit the utility model. It will be apparent to one skilled in the art that the present utility model may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the utility model by showing examples of the utility model.

The directional terms appearing in the following description are those directions shown in the drawings and do not limit the specific structure of the utility model. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

The following describes in detail the technical solutions provided by the embodiments of the present utility model with reference to fig. 1 to fig. 4.

The embodiment of the utility model relates to an automatic fiber material preheating device of a 3D printer, which comprises a control box 2 and an inner tube 6. The control box 2 is vertically fixed on a printing head of the 3D printer through a supporting plate 1 fixedly arranged on the right end face of the control box, and the inner cavity of the inner tube 6 is opposite to a feeding hole of the printing head. The left end face of the control box 2 is provided with a lead terminal 22, the heating wire 7 is wound on the outer wall of the inner tube 6, and the inside of the control box 2 is provided with a PCB board connected with the heating wire 7 and the lead terminal 22. The lead terminal 22 draws out a wire connected with the 3D printer control system, supplies a required current and is also used for controlling the heating temperature of the heating wire 7.

The control panel 21 connected with the PCB board is arranged on the front end face of the control box 2, the control panel 21 comprises an LED digital display screen arranged on the front end face of the control box 2, and a button is arranged below the LED digital display screen. The external LED digital display screen can display the heating temperature of the heating wire 7, the heating temperature is changed by adjusting the power of the heating wire 7 through a button, the preheating control of the continuous fiber material during 3D printing is realized,

The upper and lower end surfaces of the control box 2 are respectively provided with a concave threaded interface 23, and the threaded interfaces 23 on two sides are communicated through a central through hole. The upper threaded interface 23 is in threaded connection with the upper end cover 3, the upper end of the inner tube 6 penetrates through the central through hole from bottom to top to be in threaded connection with the inner cavity of the upper end cover 3, and the upper end of the upper end cover 3 is provided with a feeding hole which is opposite to the inner cavity of the inner tube 6. The feeding Kong Chengna is small and large in horn mouth shape, so that the abrasion of the edge of the feeding hole to raw materials is effectively avoided.

The lower screwed joint 23 is connected with an outer tube 4 in a screwed mode, the lower end of the outer tube 4 is narrowed to form a screwed connection portion 42, the screwed connection portion 42 is connected with a lower end cover 5 in a screwed mode, the lower end of the inner tube 6 is embedded into the inner cavity of the lower end cover 5, and a discharging hole opposite to the inner cavity of the inner tube 6 is formed in the lower end of the lower end cover 5. An outer retainer ring 41 is arranged above the outer tube 4, the outer retainer ring 41 abuts against the lower outer wall of the control box 2, an inner retainer ring 61 is arranged below the inner tube 6, and the inner retainer ring 61 abuts against the inner wall of the threaded connection portion 42.

The outer tube 4 is sleeved outside the inner tube 6 to cover the heating wire 7, the interlayer between the outer tube 4 and the inner tube 6 is filled with heat insulation slurry, and the heat insulation slurry coats the heating wire 7. The heat insulation slurry can block heat transfer to the outer tube 4 to a certain extent, and the scalding of the outer tube 4 is reduced. The inner tube 6 is sleeved with a sealing cover 8, the sealing cover 8 is embedded into the upper end of the outer tube 4, and a threading hole 81 for the heating wire 7 to run is formed in the side of the sealing cover 8. The lower end of the sealing cover 8 is an inclined plane, and the inclined plane inclines to the axle center of the sealing cover 8.

The lead wire of the control box 2 is connected into the control system of the 3D printer, the heating temperature is set through the control panel 21, the heating wire 7 transmits heat to the inner cavity of the inner tube 8, before the fiber material enters the printing port, the fiber material is preheated and heated in the inner tube 8, the temperature of the material is increased to be close to the discharging temperature from the room temperature, the working efficiency of the nozzle structure is further improved, the printing success rate is improved, and the printing quality is improved.

In accordance with the above embodiments of the utility model, these embodiments are not exhaustive of all details, nor are they intended to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model and various modifications as are suited to the particular use contemplated. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an automatic preheating device of 3D printer fibre material, includes control box (2) and inner tube (6), its characterized in that: the control box (2) left end face is provided with lead terminal (22), the winding of inner tube (6) outer wall has heater (7), control box (2) inside is provided with the PCB board of connecting heater (7) and lead terminal (22), control box (2) front end face is provided with control panel (21) of connecting the PCB board, control box (2) up and down terminal surface is provided with indent screwed joint (23) respectively, both sides screwed joint (23) are linked together through central through-hole, top screwed joint (23) threaded connection has upper end cover (3), inner tube (6) upper end passes central through-hole from bottom to top and the inner chamber threaded connection of upper end cover (3), upper end cover (3) upper end is provided with just to the feed port of inner tube (6) inner chamber, below screwed joint (23) have outer tube (4), outer tube (4) cover is with heater (7) cover in the intermediate layer inner tube (6) outside, outer tube (4) and inner tube (6) are filled with insulating paste, upper end cover (42) threaded joint (42) of inner tube (6), lower end cover (5) threaded joint (42) has, lower end cover (5), the lower end of the lower end cover (5) is provided with a discharge hole which is opposite to the inner cavity of the inner pipe (6).

2. The 3D printer fibrous material auto-pre-warming device of claim 1, wherein: the inner tube (6) is sleeved with a sealing cover (8), the sealing cover (8) is embedded into the upper end of the outer tube (4), and a threading hole (81) for wiring the heating wire (7) is formed in the side of the sealing cover (8).

3. The 3D printer fibrous material auto-pre-warming device of claim 2, wherein: the lower end of the sealing cover (8) is an inclined plane, and the inclined plane inclines to the axis of the sealing cover (8).

4. The 3D printer fibrous material auto-pre-warming device of claim 1, wherein: an outer retainer ring (41) is arranged above the outer tube (4), the outer retainer ring (41) abuts against the lower outer wall of the control box (2), an inner retainer ring (61) is arranged below the inner tube (6), and the inner retainer ring (61) abuts against the inner wall of the threaded connection portion (42).

5. The 3D printer fibrous material auto-pre-warming device of claim 1, wherein: the control panel (21) comprises an LED digital display screen arranged on the front end face of the control box (2), and a button is arranged below the LED digital display screen.

6. The 3D printer fibrous material auto-pre-warming device of claim 1, wherein: the right end face of the control box (2) is provided with a supporting plate (1).