CN117656473A

CN117656473A - A quick forming device for building model

Info

Publication number: CN117656473A
Application number: CN202410003664.7A
Authority: CN
Inventors: 柴庆; 付陆旗; 田刚
Original assignee: Zhengzhou Zhubang Model Design Co ltd
Current assignee: Zhengzhou Zhubang Model Design Co ltd
Priority date: 2024-01-02
Filing date: 2024-01-02
Publication date: 2024-03-08

Abstract

The application discloses a quick forming device for building model is through setting up annular heating aluminum block to be provided with annular heating resistance block inside, improved the inside homogeneity of being heated of screw hole, thereby guarantee that the material silk of choke and heating aluminum block heating position can evenly melt and extrude, set up weak magnet and first magnetism working medium ring in the outer lane department of choke, be provided with electro-magnet and second magnetism working medium ring simultaneously on the heating aluminum block, utilize the magnetic field size difference at weak magnet and electro-magnet, consequently just can establish a heat transfer system with there according to magnetism refrigeration, thereby cool down the choke, and can also make the heat reuse return to on the heating aluminum block, can avoid adopting radiator fan vibrations's condition like this, can also improve the utilization ratio of energy, can also carry out the regulation of radiating effect according to the temperature of choke, and can also realize high temperature circuit breaking protection, improve holistic cooling effect and security.

Description

A quick forming device for building model

Technical Field

The application relates to the technical field of 3D printing, in particular to a rapid prototyping device for a building model.

Background

The 3D printing technology is one of the rapid prototyping technologies, also called additive manufacturing, and the principle is that based on digital model files, an object is constructed by applying powdery metal or plastic and other bondable materials in a layer-by-layer printing mode, and in order to obtain an intuitive three-dimensional view in the building field, a building model is generally manufactured by adopting 3D printing, and a 3D printer used by the 3D printer is mainly driven by a portal frame structure to continuously move a 3D printer head nozzle, so that a model is formed by a 'cover', and the existing 3D printer has certain defects in practical use although being widely applied and different in types:

firstly, the existing printer heating components are heated by connecting a circuit at one end and the nozzles are arranged at the other end, so that the parts of the nozzles positioned in the heating aluminum blocks cannot be heated uniformly, and the melting effect of materials and the service life of the nozzles are affected later; secondly, the printer nozzle on the portal frame is constantly working when carrying out quick shaping, and its heating that utilizes just melts the material and extrude out the nozzle of bottom and realize the material increase and make, consequently its heating element will produce a large amount of heats, just need dispel the heat to it in order to prevent that the heat from rising along the choke, it is current many to be provided with radiator fan in the fin outside, but the vibrations of flabellum just influence the stable accurate work of nozzle like this when the work, thereby influence the problem of printing the precision, and the while is too high at the shower nozzle temperature heat come not lose and will lead to choke up or some parts overheat damage in the choke, these also can have certain potential safety hazard.

Disclosure of Invention

The application provides a quick forming device for building model, possesses shaping effectual, the stable safe advantage of heat dissipation for solve the problem that the background art presented.

In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a quick forming device for building model, includes the passage, the guide hole has been seted up at the middle part of passage, the lower half screw thread in guide hole has cup jointed the choke, the outer lane of passage evenly is provided with the fin, the bottom outer lane screw thread of choke has cup jointed the heating aluminium piece, the screw hole has been seted up at the middle part of heating aluminium piece, and the choke cup joints the upper half at the screw hole, the nozzle has been cup jointed to the lower half screw thread of screw hole, the heating chamber has been seted up in the inside of heating aluminium piece in screw hole outer lane department, heating chamber inside fixed mounting has the heating resistance piece, the top surface fixed mounting of heating aluminium piece has the insulation board, the top bilateral symmetry fixed mounting of insulation board has the installation pole, and the bottom department of fin is cup jointed at the top of installation pole, the bottom outer lane department fixed mounting of choke has the electric ring; the middle part outer lane fixed mounting of choke has weak magnet, the outer lane fixed mounting of weak magnet has the adjusting ring, the outer lane of choke is located weak magnet bottom department fixed mounting and has first magnetism working medium ring, the outer lane bottom department fixed mounting of insulation board has the electro-magnet, the inside second magnetism working medium ring that is located heating chamber outer lane position department fixed mounting of heating aluminium piece, the fixed protective sheath that has cup jointed of outer lane of heating aluminium piece, the electro-magnet is located the outer lane department of heating aluminium piece and leaves the clearance with the protective sheath between.

Furthermore, the electric connection ring, the adjusting ring, the electromagnet and the heating resistor block are in a linear connection relation in series connection, the insulating plate can isolate the passing of the magnetic induction wire, and the heating aluminum block and the protective sleeve allow the magnetic induction wire to pass through.

Further, the heating resistance block, the first magnetic working medium ring and the second magnetic working medium ring are all in annular structures and coaxial, and a heat exchange medium is arranged between the first magnetic working medium ring and the second magnetic working medium ring.

Further, the spout has been seted up to the inside of adjusting ring, the inside lateral wall fixed mounting of spout has the resistance strip, the inside slip of spout has cup jointed the slider, be connected with the gasbag between the inner wall of slider terminal surface and spout.

Further, the inner wall of the chute far away from one end of the air bag is provided with a through hole, the arc length of the resistor strip is smaller than that of the inner wall of the chute, and the air bag has telescopic elasticity.

According to the rapid prototyping device for the building model, the annular heating aluminum block is arranged, and the annular heating resistor block is arranged inside the rapid prototyping device, compared with the prior art, the internal heating uniformity of the threaded hole is directly improved, so that the filaments at the heating positions of the throat and the heating aluminum block can be uniformly melted and extruded, and the situation that the service life is influenced by blocking and local heating is avoided;

the weak magnet and the first magnetic working medium ring are arranged at the outer ring of the throat, and the electromagnet and the second magnetic working medium ring are arranged on the heating aluminum block, so that compared with the prior art, the magnetic field difference between the weak magnet and the electromagnet is utilized, and the first magnetic working medium ring and the second magnetic working medium ring are respectively arranged in the two magnetic fields, therefore, a heat transfer system can be established according to magnetic refrigeration and the first magnetic working medium ring, the throat is cooled, heat can be recycled to the heating aluminum block, the situation of vibration of a cooling fan can be avoided, the utilization rate of energy can be improved, and the sustainable development concept is met;

through set up the adjusting ring in the outside of weak magnet to the spout has been seted up to the adjusting ring is inside to cup jointed the slider, compares in prior art, drives the slider according to the effect of expend with heat and contract with cold and slides, can also realize circuit adjustment simultaneously, just so can carry out the regulation of radiating effect according to the temperature of choke, and can also realize high temperature circuit breaking protection, and report to the police and remind the staff, improve holistic cooling effect and security.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an overall elevation view of the structure of the present invention;

FIG. 3 is a partial semi-sectional view of the structure of the present invention;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 6 is a schematic diagram of a heating aluminum block structure according to the present invention;

fig. 7 is an enlarged view of fig. 5 at C.

Wherein: 1. a material guiding pipe; 101. a material guiding hole; 2. a throat; 3. heating the aluminum block; 301. a threaded hole; 302. a heating chamber; 4. a nozzle; 5. a heat sink; 6. an insulating plate; 7. a mounting rod; 8. an electric ring; 9. heating the resistor block; 10. a weak magnet; 11. an adjusting ring; 1101. a chute; 12. a first magnetic medium ring; 13. an electromagnet; 14. a second magnetic medium ring; 15. a protective sleeve; 16. a heat exchange medium; 17. a resistor strip; 18. a slide block; 19. an air bag.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

Referring to fig. 1-6, a rapid prototyping device for building models, including the feed pipe 1, the feed guide hole 101 has been seted up at the middle part of feed guide pipe 1, the lower half screw thread of feed guide hole 101 has been cup jointed throat 2, the outer lane of feed guide pipe 1 evenly is provided with fin 5, the bottom outer lane screw thread of throat 2 has been cup jointed and has been heated aluminium piece 3, screw hole 301 has been seted up at the middle part of heating aluminium piece 3, and throat 2 cup joints in the last half of screw hole 301, the lower half screw thread of screw hole 301 has been cup jointed nozzle 4, the inside of heating aluminium piece 3 is located screw hole 301 outer lane department and has been seted up heating chamber 302, heating chamber 302 internally mounted has heating resistor 9, through seting up annular heating chamber 302 and at its internally mounted heating resistor 9, so just improved the heating homogeneity of screw hole 301 inner wall round, the assurance material silk can evenly melt, avoid not melting the condition that causes the putty completely, the top surface fixed mounting of heating aluminium piece 3 has 6, the top fixed mounting of insulating plate 6 has installation pole 7, and the top cover of installation pole 7 connects to the bottom of fin 5, the bottom of fin 5 has been cup jointed the nozzle 4, can also be connected with the electric wire ring 8 through the fixed connection 3 in order to reduce the electric wire and can also be connected to the electric wire ring 11 through the electric wire and the electric wire ring 3, can reduce the effect of cooling down, and the electric wire can be connected to the electric wire ring 11 through the electric wire ring and the electric wire is better and the electric wire ring-cooled down. The middle outer ring of the throat pipe 2 is fixedly provided with a weak magnet 10, the outer ring of the weak magnet 10 is fixedly provided with an adjusting ring 11, the outer ring of the throat pipe 2 is fixedly provided with a first magnetic working medium ring 12 at the bottom of the weak magnet 10, the bottom of the outer ring of the insulating plate 6 is fixedly provided with an electromagnet 13, the inside of the heating aluminum block 3 is fixedly provided with a second magnetic working medium ring 14 at the outer ring of the heating cavity 302, the magnetic field of the weak magnet 10 is provided with the first magnetic working medium ring 12, the magnetic force generated after the electromagnet 13 is electrified is far greater than the weak magnet 10, and a heat exchange medium 16 is connected between the first magnetic working medium ring 12 and the second magnetic working medium ring 14, so that the first magnetic working medium ring 12 can absorb heat according to the principle of magnetic refrigeration, the throat pipe 2 is cooled to prevent the material wires on the throat pipe from being melted inside the throat pipe 2, meanwhile, the second magnetic working medium ring 14 can release heat, the heating block 9 is matched to improve the heat utilization rate, the heat on the heating aluminum block 3 is also prevented from losing rapidly, the heat on the heating aluminum block 3 is improved, the magnetic force generated after the electromagnet 13 is electrified is far greater than the weak magnet 10, the heat exchange medium 16 is connected between the first magnetic working medium ring 12 and the outer ring 13, the first magnetic working medium ring 13 can be directly contacted with the outer ring 13, and the magnetic protective sleeve 13 is prevented from being directly contacted with the outer ring 13, and the heat protection sleeve 13 is directly arranged on the outer ring 13, and the heat protection sleeve is directly, and the heat is directly contacted with the outer ring 13.

Referring to fig. 1-4 and 6, the power connection ring 8, the adjusting ring 11, the electromagnet 13 and the heating resistor block 9 are in a linear connection relationship in series, the insulating plate 6 can isolate the passing of the magnetic induction line, the heating aluminum block 3 and the protective sleeve 15 allow the magnetic induction line to pass, the temperature is reduced by the magnetic refrigeration principle, and the insulating plate 6 plays a role of isolating the magnetic induction line, so that the effects of heat absorption and heat release can be realized in a small range as much as possible, the mutual influence is small, and the power of the heating resistor block 9 is transmitted through the power connection ring 8, so that the heating can be stopped by directly cutting off the power when the temperature is too high, and the effect of protecting and alarming is achieved. The heating resistor block 9, the first magnetic working medium ring 12 and the second magnetic working medium ring 14 are all in annular structures and coaxial, so that uniformity of heat conduction and transmission is guaranteed, uniformity of heat dissipation is guaranteed, melting and extrusion of material wires are facilitated, forming effect is better, and a heat exchange medium 16 is arranged between the first magnetic working medium ring 12 and the second magnetic working medium ring 14.

Referring to fig. 5 and 7, a sliding groove 1101 is formed in the adjusting ring 11, a resistor strip 17 is fixedly mounted on the inner side wall of the sliding groove 1101, a sliding block 18 is sleeved in the sliding groove 1101 in a sliding manner, an air bag 19 is connected between the end face of the sliding block 18 and the inner wall of the sliding groove 1101, the adjusting ring 11 is used for monitoring the temperature and can play a role in adjusting and breaking when the temperature changes or dangerous temperature is reached, and therefore the cooling effect and the safety guarantee can be improved. The inner wall of the end, far away from the air bag 19, of the sliding groove 1101 is provided with a through hole, the arc length of the resistor strip 17 is smaller than the inner wall arc length of the sliding groove 1101, the air bag 19 is provided with telescopic elasticity, the air bag 19 inside the adjusting ring 11 is heated and expanded after receiving heat from the throat pipe 2, so that the sliding block 18 is pushed to slide along the sliding groove 1101, the contact point is changed when the sliding block moves along the resistor strip 17, the effect of the sliding rheostat is achieved, the resistance in a circuit is gradually reduced, the current in the circuit is reduced, the magnetic force generated by the electromagnet 13 is improved, the weak magnet 10 is reduced more due to the fact that the magnetic force is increased, the cooling effect of the first magnetic medium ring 12 is improved, the sliding block 18 is enabled to slide away from the resistor strip 17 to a certain extent when the temperature is high, direct power-off protection is achieved, and an alarm is triggered to remind a worker to stop and cool down for inspection.

Working principle: the driving device on the portal frame drives the spray head to integrally move when the device works, the material wire enters the material guide hole 101 of the material guide pipe 1 through the driving device, then continuously enters the throat pipe 2 downwards, and is positioned in the heating aluminum block 3 when entering the bottom of the throat pipe 2, at the moment, a large amount of heat is generated by electrifying the heating resistor block 9 so as to melt the material wire positioned in the threaded hole 301, and then the material wire is extruded from the bottom of the nozzle 4 and is formed into a building model on the platform;

in the working process, heat on the throat pipe 2 is upwards transferred and is transferred to the weak magnet 10 through contact, when the temperature of the weak magnet 10 is increased, the magnetic force is gradually weakened, the first magnetic working medium ring 12 is positioned in a magnetic field generated by the weak magnet 10, meanwhile, the second magnetic working medium ring 14 is positioned in a magnetic field generated by the electromagnet 13, and the first magnetic working medium ring 12 and the second magnetic working medium ring 14 are connected through the heat exchange medium 16, so that the first magnetic working medium ring 12 absorbs heat and the second magnetic working medium ring 14 releases heat according to the magnetocaloric effect, the first magnetic working medium ring 12 is utilized to cool and dissipate heat to the throat pipe 2, the heat is transferred to the inside of the heating aluminum block 3 to be utilized to the maximum, and the resource utilization rate is improved;

when the temperature of the throat pipe 2 rises, the temperature is also transferred to the adjusting ring 11, so that air in the air bag 19 in the sliding groove 1101 is heated and expanded, the sliding block 18 is pushed to slide along the air bag 19, the resistance in a circuit becomes smaller along with the sliding of the sliding block 18, the current is increased, the magnetic field generated by the electromagnet 13 is stronger, the cooling effect is improved, the circuit is disconnected after the sliding block 18 slides out of the end part of the air bag 19 due to overhigh temperature, and an alarm is triggered, so that workers are reminded of achieving dangerous temperature and needing to stop for cooling and then continuing to work, and the quality and safety of 3D printing are ensured.

Claims

1. The rapid prototyping device for the building model is characterized by comprising a material guide pipe (1), wherein a material guide hole (101) is formed in the middle of the material guide pipe (1), a throat pipe (2) is sleeved on the lower half part of the material guide hole (101) in a threaded manner, cooling fins (5) are uniformly arranged on the outer ring of the material guide pipe (1), a heating aluminum block (3) is sleeved on the outer ring of the bottom of the throat pipe (2) in a threaded manner, a threaded hole (301) is formed in the middle of the heating aluminum block (3), the throat pipe (2) is sleeved on the upper half part of the threaded hole (301), a nozzle (4) is sleeved on the lower half part of the threaded hole (301) in a threaded manner, a heating cavity (302) is formed in the outer ring of the threaded hole (301), a thermoelectric block (9) is fixedly installed in the heating cavity (302), an insulating plate (6) is fixedly installed on the top surface of the heating aluminum block (3), a mounting rod (7) is symmetrically and fixedly installed on two sides of the top of the insulating plate (6), and the top of the mounting rod (7) is sleeved on the bottom of the cooling fins (5), and the bottom of the insulating plate (6) is fixedly connected with an electric ring (8);

the middle part outer lane fixed mounting of choke (2) has weak magnet (10), the outer lane fixed mounting of weak magnet (10) has adjusting ring (11), the outer lane of choke (2) is located weak magnet (10) bottom department fixed mounting has first magnetic medium ring (12), the outer lane bottom department fixed mounting of insulation board (6) has electro-magnet (13), the inside second magnetic medium ring (14) that are located heating chamber (302) outer lane position department of heating aluminium piece (3), the outer lane fixed sleeve of heating aluminium piece (3) has protective sheath (15), electro-magnet (13) are located the outer lane department of heating aluminium piece (3) and leave the clearance with protective sheath (15).

2. A rapid prototyping apparatus for building models according to claim 1, characterized in that the electrical connection ring (8), the adjusting ring (11), the electromagnet (13) and the heating resistor block (9) are in a linear connection in series, the insulating plate (6) can isolate the penetration of the magnetic induction wire, and the heating aluminum block (3) and the protective sleeve (15) allow the penetration of the magnetic induction wire.

3. The rapid prototyping device for building models according to claim 1, wherein the heating resistor block (9), the first magnetic working medium ring (12) and the second magnetic working medium ring (14) are all in a ring-shaped structure and coaxial, and a heat exchange medium (16) is arranged between the first magnetic working medium ring (12) and the second magnetic working medium ring (14).

4. The rapid prototyping device for building models according to claim 1, wherein a chute (1101) is formed in the adjusting ring (11), a resistor strip (17) is fixedly arranged on the inner side wall of the chute (1101), a sliding block (18) is sleeved in the chute (1101) in a sliding manner, and an air bag (19) is connected between the end face of the sliding block (18) and the inner wall of the chute (1101).

5. The rapid prototyping device for building models according to claim 4, wherein the inner wall of the sliding groove (1101) far away from one end of the air bag (19) is provided with a through hole, the arc length of the resistor strip (17) is smaller than the arc length of the inner wall of the sliding groove (1101), and the air bag (19) has telescopic elasticity.