CN112122612A - Screw rod is extruded formula electromagnetism heating device for 3D printer - Google Patents

Abstract

The invention discloses an electromagnetic heating device for a screw extrusion type 3D printer, which comprises an electromagnetic induction coil and a heat dissipation plate, wherein the electromagnetic induction coil is sleeved on a rod body of an extrusion nozzle through an annular heat conduction plate, a protection cover is fixedly connected to the outer part of the rod body of the extrusion nozzle, the electromagnetic induction coil is arranged in the protection cover, a throat pipe is arranged in the extrusion nozzle, a feeding port and an extrusion port are respectively arranged at two ends of the throat pipe, and the heat dissipation plate is sleeved at one end of the rod body of the extrusion nozzle. According to the invention, the electromagnetic induction coil is sleeved on the rod body of the extrusion nozzle, the high-frequency electromagnetic field generated by the electromagnetic induction coil enables the metal wire consumable in the throat pipe to be rapidly and uniformly melted, the problems that the extrusion nozzle is easy to block and the consumable is difficult to extrude can be avoided, and the heat dissipation plate and the fan are installed on the rod body of the extrusion nozzle in a threaded manner for heat dissipation, so that the low wire discharging efficiency caused by the premature softening of the metal wire consumable is prevented.

Description

Electromagnetic heating device for screw extrusion 3D printer

technical field

The invention relates to the technical field of 3D printing, in particular to an electromagnetic heating device for a screw extrusion type 3D printer.

Background technique

3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that builds objects by layer-by-layer printing based on digital model files and using adhesive materials such as powdered metal or plastic. . The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction, automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, and more.

Most of the existing screw extrusion 3D printers use resistance wire heating, but for extrusion nozzles that use metal wires as consumables, the resistance wire heating efficiency is low, the heat loss is large, and the energy consumption is high. The heat provided by the metal is not enough to fully melt the metal, which will cause the nozzle to be easily blocked and the consumables to be difficult to extrude. Therefore, we need to provide an electromagnetic heating device for screw extrusion 3D printers to solve the above problems.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an electromagnetic heating device for a screw extrusion 3D printer. An electromagnetic induction coil is set on the rod body of the extrusion nozzle, and the high-frequency electromagnetic field generated by the electromagnetic induction coil makes the wire consumables in the throat quickly and evenly. Melting can avoid the problems that the extrusion nozzle is easily blocked and the consumables are difficult to extrude. At the same time, the setting of the protective cover avoids external contact damage and improves the safety. The rod body of the extrusion nozzle is threaded to install the cooling plate and fan. The use of heat dissipation can improve the heat dissipation effect of one end of the inner throat pipe of the extrusion nozzle, thereby preventing the low wire output efficiency caused by premature softening of the wire consumables, so as to solve the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an electromagnetic heating device for a screw extrusion type 3D printer, comprising an electromagnetic induction coil and an electromagnetic induction coil, which is sleeved on the rod body of the extrusion nozzle through an annular heat-conducting plate. , a protective cover is fixedly connected to the outside of the rod body of the extrusion nozzle, and the electromagnetic induction coil is arranged inside the protective cover. The inside of the extrusion nozzle is provided with a throat, and the two ends of the throat are respectively set There is a feeding port and an extrusion port, and one end of the rod body of the extrusion nozzle is sleeved with a cooling plate.

Preferably, the extrusion nozzle is arranged in a bar shape, and the extrusion nozzle is arranged as a ceramic nozzle.

Preferably, the electromagnetic induction coil is arranged in a surrounding manner, and the terminals of the electromagnetic induction coil are arranged on the same side.

Preferably, the protective cover is a high-temperature heat-insulating ceramic protective cover, and one side of the protective cover is provided with two sets of through holes, and the terminals of the electromagnetic induction coil are disposed outside the protective cover through the through holes. .

Preferably, the cooling plates are symmetrically arranged in two groups, the cooling plates are arranged in an arc plate shape, and the cooling plates are fitted on the rod body of the extrusion nozzle through a slot on one side.

Preferably, one side of the heat dissipation plate is fixedly connected with heat dissipation heads, and the heat dissipation heads are arranged at equal intervals.

Preferably, the heat dissipation head includes a heat dissipation base, and a heat dissipation rod is fixedly connected to one side of the heat dissipation base.

Preferably, a fixing frame is fixedly connected to one side of the heat dissipation plate, a fan is installed in the fixing frame, and one end of the extrusion nozzle is fixedly connected with a fixing head, and one end of the fixing frame is connected to the fixing head through bolts Phase fixed connection.

Compared with the prior art, the beneficial effect of the present invention is that an electromagnetic induction coil is sleeved on the rod body of the extrusion nozzle, and the high-frequency electromagnetic field generated by the electromagnetic induction coil makes the wire consumables in the throat melt quickly and evenly, which can avoid extrusion. The nozzle is easy to be blocked and the consumables are difficult to extrude. At the same time, the setting of the protective cover avoids external contact damage and improves the safety, and the heat dissipation plate and fan are threaded on the rod body of the extrusion nozzle for heat dissipation, which can improve the The heat dissipation effect of one end of the inner throat of the extrusion nozzle, thereby preventing the wire consumables from softening prematurely and causing low wire output efficiency.

Description of drawings

Fig. 1 is the front view structure schematic diagram of the present invention;

Fig. 2 is the sectional structure schematic diagram of the present invention;

FIG. 3 is a schematic top view of the structure of the heat dissipation plate of the present invention.

In the figure: 1. Extrusion nozzle; 2. Fixed head; 3. Feeding port; 4. Extrusion port; 5. Protective cover; 6. Electromagnetic induction coil; 7. Through hole; 8. Cooling plate; 9. Cooling head ; 10, fan; 11, fixing frame; 12, bolt; 13, throat pipe; 14, card slot; 15, cooling seat; 16, cooling rod.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

1-3, the present invention provides a technical solution: an electromagnetic heating device for a screw extrusion 3D printer, comprising an electromagnetic induction coil 6 and an electromagnetic induction coil 6, which is sleeved on the extrusion nozzle through a ring-shaped heat-conducting plate On the rod body of the extrusion nozzle 1, a protective cover 5 is fixedly connected to the outside of the rod body of the extrusion nozzle 1, and the electromagnetic induction coil 6 is arranged inside the protective cover 5. A throat pipe 13 is opened inside the extrusion nozzle 1, and two parts of the throat pipe 13 are provided. The ends are respectively provided with a feeding port 3 and an extrusion port 4, and one end of the rod body of the extrusion nozzle 1 is sleeved with a cooling plate 8.

In actual implementation:

The extrusion nozzle 1 is arranged in a bar shape, and the extrusion nozzle 1 is arranged as a ceramic nozzle, the electromagnetic induction coil 6 is arranged in a surrounding type, and the terminals of the electromagnetic induction coil 6 are arranged on the same side, and the protective cover 5 is high temperature resistant and heat insulation. A ceramic protective cover, and two sets of through holes 7 are opened on one side of the protective cover 5, and the terminals of the electromagnetic induction coil 6 are arranged outside the protective cover 5 through the through holes 7. The wire consumables in the throat 13 of the extrusion nozzle 1 are rapidly and uniformly melted, and the protective cover 5 is used to improve the safety protection in use.

The heat sink 8 is symmetrically arranged in two groups. The heat sink 8 is arranged in an arc shape. The heat sink 8 is attached to the rod body of the extrusion nozzle 1 through the slot 14 on one side. One side of the heat sink 8 is fixedly connected with a heat sink. The head 9, and the heat dissipation heads 9 are arranged at equal intervals, the heat dissipation head 9 includes a heat dissipation base 15, one side of the heat dissipation base 15 is fixedly connected with a heat dissipation rod 16, and one side of the heat dissipation plate 8 is fixedly connected with a fixing frame 11, the fixing frame 11 A fan 10 is installed inside, and one end of the extrusion nozzle 1 is fixedly connected with a fixed head 2, one end of the fixed frame 11 is fixedly connected with the fixed head 2 through bolts 12, and the threaded heat dissipation plate 8 and the fan 10 are used for heat dissipation, which can be used for heat dissipation. The heat dissipation effect of one end of the inner throat 13 of the extrusion nozzle 1 is improved, thereby preventing the low wire output efficiency caused by premature softening of the wire consumables.

Working principle: An electromagnetic induction coil 6 is set on the rod body of the extrusion nozzle 1. The high-frequency electromagnetic field generated by the electromagnetic induction coil 6 makes the wire consumables in the throat 13 melt quickly and evenly, which can prevent the extrusion nozzle 1 from being easily blocked. At the same time, the setting of the protective cover 5 avoids external contact damage and improves the safety, and the heat dissipation plate 8 and the fan 10 are threadedly installed on the rod body of the extrusion nozzle 1 for heat dissipation, which can improve the The heat dissipation effect of one end of the throat pipe 13 in the extrusion nozzle 1 can prevent the wire consumables from softening prematurely and the wire output efficiency is low.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. An electromagnetic heating device for screw extrusion type 3D printer, comprising electromagnetic induction coil (6) and, it is characterized in that: described electromagnetic induction coil (6) is sleeved on extrusion nozzle (1) by annular heat conducting plate On the rod body of the extrusion nozzle (1), a protective cover (5) is fixedly connected to the outside of the rod body of the extrusion nozzle (1), and the electromagnetic induction coil (6) is arranged inside the protective cover (5). ) is provided with a throat (13), and the two ends of the throat (13) are respectively provided with a feeding port (3) and an extrusion port (4), and one end of the rod body of the extrusion nozzle (1) is sleeved A cooling plate (8) is provided. 2 . The electromagnetic heating device for a screw extrusion 3D printer according to claim 1 , wherein the extrusion nozzle ( 1 ) is arranged in a bar shape, and the extrusion nozzle ( 1 ) is arranged in a bar shape. 3 . For ceramic sprinklers. 3. The electromagnetic heating device for a screw extrusion type 3D printer according to claim 1, characterized in that: the electromagnetic induction coil (6) is arranged in a wrap-around manner, and the wiring of the electromagnetic induction coil (6) ends on the same side. 4. The electromagnetic heating device for a screw extrusion 3D printer according to claim 1, wherein the protective cover (5) is a high-temperature heat-insulating ceramic protective cover, and the protective cover (5) One side of the ) is provided with two groups of through holes (7), and the terminals of the electromagnetic induction coil (6) are arranged outside the protective cover (5) through the through holes (7). 5. The electromagnetic heating device for a screw extrusion 3D printer according to claim 1, characterized in that: the radiating plate (8) is symmetrically arranged with two groups, and the radiating plate (8) is arc-shaped The heat dissipation plate (8) is attached and arranged on the rod body of the extrusion nozzle (1) through the clamping groove (14) on one side. 6. An electromagnetic heating device for a screw extrusion type 3D printer according to claim 1, characterized in that: a heat dissipation head (9) is fixedly connected to one side of the heat dissipation plate (8), and the heat dissipation head is (9) Equal spacing distribution settings. 7. The electromagnetic heating device for a screw extrusion type 3D printer according to claim 6, characterized in that: the heat dissipation head (9) comprises a heat dissipation seat (15), and one of the heat dissipation seat (15) The side is fixedly connected with a cooling rod (16). 8. The electromagnetic heating device for a screw extrusion type 3D printer according to claim 1, wherein a fixing frame (11) is fixedly connected to one side of the heat dissipation plate (8), and the fixing frame ( 11) A fan (10) is installed inside, and one end of the extrusion nozzle (1) is fixedly connected with a fixing head (2), and one end of the fixing frame (11) is connected to the fixing head (2) through bolts (12) Phase fixed connection.

Images