CN218084194U - Novel structure of high-temperature printing head - Google Patents

Abstract

The utility model discloses a novel structure of high temperature printer head, including the outer radiator of fretwork form, the inside of outer radiator is equipped with interior radiator, and interior radiator and outer radiator contact, and the inside of interior radiator is equipped with the capillary, and the capillary stretches out interior radiator downwards, and the bottom contact of capillary has interior heater, and the sub-unit connection of interior heater has external heater, and the bottom of external heater is connected with the nozzle, and the top of nozzle and the bottom contact of interior heater, and the capillary is worn to the outer end of nozzle downwards, the utility model discloses a set up copper's interior radiator and capillary inside outer radiator, the interior radiator of capillary can dispel the heat to the capillary, and the capillary can also dispel the heat through outer radiator simultaneously, and the heat-sinking capability improves greatly, can let the printing consumptive material in the capillary keep the normal atmospheric temperature, reduces the putty, thereby prints; the inner wall of the capillary tube is smooth and small in size, and the high-temperature resistance enables the capillary tube to print more high-temperature materials.

Description

Novel structure of high-temperature printing head

Technical Field

The utility model relates to a print technical field, specifically be a novel structure that high temperature beaten printer head.

Background

The existing printing head mainly comprises a radiator, a stainless steel throat pipe and a heater, wherein the radiator and the heater are fixedly connected in a threaded mode through the stainless steel throat pipe, a Teflon pipe enters from the top end of a pneumatic connector and directly reaches the heater to be in contact with the heater, printing consumables enter from the pipe orifice of the Teflon pipe, pass through the stainless steel throat pipe and finally reach the heater part, and are melted and discharged.

However, the existing printing head cannot print at high temperature, the Teflon pipe is in contact with the heater through the throat pipe, the Teflon pipe can only resist the temperature of 260 ℃ at most, the Teflon pipe can be melted when the temperature is higher than the temperature, feeding is influenced, printing cannot be carried out, a lot of materials needing high-temperature printing cannot be used, the heating and preheating extrusion flow of printing consumables is insufficient, and high-speed printing cannot be carried out; simultaneously, the choke is stainless steel, and the size is big, and heat-conduction is too big, and the radiator heat dissipation is not enough fast enough, and the printing consumables leads to the choke putty because of high temperature and excessive heat-conduction.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel structure that printer head was beaten to high temperature to the printer head high temperature during operation who proposes in solving above-mentioned background art, the extrusion flow of printing consumables is not enough, and printing consumables leads to the problem of choke plug because of the excessive heat-conduction of high temperature and stainless steel's choke simultaneously.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a novel structure that high temperature beats printer head, includes the outer radiator of fretwork form, the inside of outer radiator is equipped with interior radiator, and interior radiator and outer radiator contact, the inside of interior radiator is equipped with the capillary, and the capillary stretches out interior radiator downwards, the bottom contact of capillary has interior heater, the sub-unit connection of interior heater has outer heater, the bottom of outer heater is connected with the nozzle, and the bottom contact of the top of nozzle and interior heater, the capillary is worn to the outer end of nozzle downwards.

As a further preferred aspect of the present technical solution, an L-shaped fixed pressing block is embedded into the bottom of the outer radiator from bottom to top, an inner side surface of a vertical section of the fixed pressing block is attached to the inner radiator, and a horizontal section of the bottom of the fixed pressing block is supported at the bottom of the inner radiator.

As a further preferred feature of the present technical solution, a fixed pressing plate is disposed at the bottom of the outer heat sink, the fixed pressing plate is sleeved outside the capillary tube, and a plurality of screws iii are disposed on the fixed pressing plate and screwed to the outer heat sink.

As a further preferred aspect of the present invention, a screw is screwed into a side surface of the outer heat sink, and an inner end of the screw presses the inner heat sink into the outer heat sink.

As a further preferred aspect of the present technical solution, the external heater is provided with a plurality of mounting holes, a second screw penetrates through the mounting holes, and an end of the second screw is screwed to the external heat sink.

As a further preferred feature of the present invention, at least two of the mounting holes are provided and circumferentially distributed on the outer heater.

As a further preferable aspect of the present invention, the inner heat sink is made of a copper material.

The utility model provides a novel structure that printer head was beaten to high temperature possesses following beneficial effect:

(1) The utility model discloses an inside interior radiator and the capillary that sets up copper of radiator outside, the interior radiator of copper can dispel the heat to the capillary, and the capillary can also dispel the heat through outer radiator simultaneously, and the heat-sinking capability improves greatly, can let the printing consumables in the capillary keep the normal atmospheric temperature, reduces the putty to smoothly print.

(2) The utility model discloses a set up the capillary of metal, the inner wall of capillary is smooth and small, and heat-conduction also significantly reduces, has high temperature resistance performance simultaneously to can print more high temperature material.

Drawings

Fig. 1 is a schematic view of a first view structure according to a first embodiment of the present invention;

fig. 2 is a schematic view of a W-W direction cross-sectional structure of fig. 1 according to a first embodiment of the present invention;

fig. 3 is a schematic structural view of a second viewing angle according to a first embodiment of the present invention;

fig. 4 is a schematic view of the U-U direction cross-sectional structure of fig. 3 according to the first embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of a second embodiment of the present invention

In the figure: 1. an external heat sink; 2. an inner heat sink; 3. a capillary tube; 4. an external heater; 5. a nozzle; 6. a first screw; 7. fixing a pressing block; 8. an internal heater; 9. a second screw; 10. mounting holes; 11. fixing the pressing plate; 12. and a third screw.

Detailed Description

The technical solution 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.

Example one

The utility model provides a technical scheme: in the present embodiment, as shown in fig. 1 and 2, an outer heat sink (1) is located at the outermost portion of a printing head, the outer heat sink (1) is designed to be hollow, so that air circulation can be increased, heat dissipation is better, and an inner heat sink (2) made of copper is located inside the outer heat sink (1) and is in contact with the inner portion of the outer heat sink (1); a capillary tube (3) which penetrates through the capillary tube is arranged at the central axis of the inner radiator (2), the upper part of the capillary tube (3) is tightly contacted with the inner radiator (2), the lower part of the capillary tube (3) is sleeved with the inner heater (8), the capillary tube (3) penetrates through the central axis of the inner heater (8), so that the inner radiator (2), the capillary tube (3) and the inner heater (8) are fixed together, a throat part of a printing head is formed, the capillary tube has the functions of material passing, heat dissipation and heating, the lower part of the inner heater (8) is provided with an outer heater (4) which is connected with threads, then the bottom of the outer heater (4) is spirally connected with a nozzle (5), the capillary tube (3) penetrates through the central axis of the nozzle (5), and meanwhile, the top of the nozzle (5) is required to be contacted with the inner heater (8);

in order to fix the inner radiator (2), an L-shaped fixed pressing block (7) is arranged and is installed from the bottom of the outer radiator (1) and positioned between the outer radiator (1) and the inner radiator (2), the protruding part of the bottom of the fixed pressing block (7) is supported at the bottom of the inner radiator (2) to prevent the inner radiator (2) from falling down, then a screw I (6) is tightened from the side surface of the outer radiator (1), pressure is applied to the fixed pressing block (7), the fixed pressing block (7) applies pressure to the inner radiator (2), and finally the inner radiator (2) is fixed in the outer radiator (1), so that a complete printing head structure is formed as shown in figures 1 and 3,

as shown in fig. 4, in order to prevent the left and right deviation of the up-down structure, at least two mounting holes (10) are formed in the outer heater (4), a second screw (9) penetrates through the outer heater from bottom to top, the top end of the second screw (9) is screwed on the outer radiator (1) in a spiral mode, the outer heater (4) and the outer radiator (1) are fixedly connected, and lateral force in the left and right directions is prevented.

When the device is used, printing consumables enter from the top end of the upper part of the outer radiator (1), respectively pass through the capillary tube (3) and the inner heater (8), finally reach the outer heater (4) and the nozzle (5), then the outer heater (4) and the inner heater (8) heat and melt the printing consumables, and finally the printing consumables are extruded through the nozzle (5);

when the printer works, the inner heater (8) is connected with the outer heater (4), the heat of the outer heater (4) is transferred to the inner heater (8), the heating area of the printing consumables is directly increased, and the printing flow is adjusted and increased.

The heat of external heater (4) can conduct for capillary (3), if the heat of transmission is too big or the heat dissipation is not enough, will influence the printing consumables in capillary (3), make it receive thermal expansion, even melt, finally form the putty, therefore in this structure, capillary (3) are small, the wall thickness is thin, the heat that the heater transmitted capillary (3) significantly reduces, then capillary (3) dispel the heat through interior radiator (2), can take away the heat that external heater (4) transmitted on capillary (3) fast, interior radiator (2) contact with outer radiator (1), conduct partial heat to on outer radiator (1) and dispel the heat simultaneously, can let the printing consumables in capillary (3) that are in outer radiator (1) part keep the normal atmospheric temperature like this, thereby smoothly print, guarantee and increased the reliability of printing, print the effect.

Example two

The difference from the first embodiment is that: as shown in fig. 5, the fixing pressing block (7) of the first embodiment is changed into a fixing pressing plate (11) to be used for fixing the inner heat sink (2), specifically, the fixing pressing plate (11) is located at the bottom of the outer heat sink (1), the upper portion of the fixing pressing plate (11) is in contact with the bottom of the inner heat sink (2), a screw three (12) passes through the bottom of the fixing pressing plate (11) and is in contact with and tightened on the bottom of the outer heat sink (1), pressure is applied to the fixing pressing plate (11), the fixing pressing plate (11) applies pressure to the inner heat sink (2), the inner heat sink (2) is fixed in the outer heat sink (1), and meanwhile, a screw two (9) needs to be tightened from the side of the outer heat sink (1) to apply pressure to the inner heat sink (2), and the inner heat sink (2) is fixed in the outer heat sink (1), so that the inner heat sink (2) is further prevented from rotating.

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

Claims (6)

1. The utility model provides a novel structure of high temperature beats printer head, includes outer radiator (1) of fretwork form, its characterized in that: the inside of outer radiator (1) is equipped with interior radiator (2), and interior radiator (2) and outer radiator (1) contact, the inside of interior radiator (2) is equipped with capillary (3), and capillary (3) stretch out interior radiator (2) downwards, the bottom contact of capillary (3) has interior heater (8), the sub-unit connection of interior heater (8) has outer heater (4), the bottom of outer heater (4) is connected with nozzle (5), and the top of nozzle (5) and the bottom contact of interior heater (8), the outer end of nozzle (5) is worn downwards in capillary (3).

2. A novel architecture for a high temperature printhead as in claim 1, wherein: the bottom of outer radiator (1) is from down having fixed briquetting (7) of L type of embedding up, the vertical section medial surface of fixed briquetting (7) pastes tightly on radiator (2) including, and its bottom horizontal segment holds in the palm the bottom of radiator (2) including.

3. The novel structure of a high temperature printhead as claimed in claim 1, wherein: the bottom of outer radiator (1) is equipped with fixed pressing plate (11), and fixed pressing plate (11) cover outside capillary (3), be equipped with a plurality of screw three (12) on fixed pressing plate (11), and screw three (12) are screwed up on outer radiator (1).

4. A novel structure of a high temperature print head according to claim 2 or 3, characterized in that: a first screw (6) is screwed into the side face of the outer radiator (1), and the inner end of the first screw (6) presses the inner radiator (2) in the outer radiator (1).

5. The novel structure of a high temperature printhead as claimed in claim 1, wherein: the outer heater (4) is provided with a plurality of mounting holes (10), a second screw (9) penetrates through the mounting holes (10), and the end part of the second screw (9) is screwed on the outer radiator (1).

6. A novel architecture for a high temperature printhead as in claim 5, wherein: the number of the mounting holes (10) is at least two, and the mounting holes are circumferentially distributed on the outer heater (4).

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