CN211542389U

CN211542389U - Print head and print pen

Info

Publication number: CN211542389U
Application number: CN201921983325.0U
Authority: CN
Inventors: 蒋昆
Original assignee: Zhuhai Sunlu Industry Co ltd
Current assignee: Zhuhai Sunlu Industry Co ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-09-22
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a printing head and a printing pen with the printing head, wherein the printing head comprises a nozzle and a channel for conveying consumable materials; the ceramic heat conducting piece is sleeved on the nozzle; a heating element disposed on the ceramic heat-conducting member or in an area between the nozzle and the ceramic heat-conducting member; the utility model discloses a ceramic heat conducting piece is established to the surface cover of printer head at the nozzle, and the heating element sets up on ceramic heat conducting piece, evenly conducts to the nozzle after the ceramic heat conducting piece is heated wholly promptly, reaches even, the effect of stable heating; or the heating component is arranged in the area between the ceramic heat conducting piece and the nozzle, the ceramic heat conducting piece can be heated by the heat emitted outwards by the heating component, the ceramic heat conducting piece heats the nozzle, the heat loss is reduced, and the ceramic heat conducting piece is sleeved on the nozzle, so that the nozzle can uniformly and stably heat.

Description

Print head and print pen

Technical Field

The utility model relates to a 3D prints technical field, in particular to beat printer head and print pen.

Background

The printer head of current 3D printing pen is mostly become by non-stick pipe, heater and nozzle, and the heater winding is at the surface of nozzle, and such structure has the inhomogeneous problem of being heated, can't heat the consumptive material steadily.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a beat printer head can guarantee to beat printer head and stabilize the heating consumptive material to reduce the consumption.

The utility model discloses still provide a print pen that has above-mentioned printer head.

According to the utility model discloses a beat printer head of first aspect embodiment, include: a nozzle having a passage for transporting consumables; the ceramic heat conducting piece is sleeved on the nozzle; a heat generating component disposed on the ceramic heat conductive member or in an area between the nozzle and the ceramic heat conductive member.

According to the utility model discloses beat printer head has following beneficial effect at least: the utility model discloses a ceramic heat conducting piece is established to the surface cover of printer head at the nozzle, and the heating element sets up on ceramic heat conducting piece, evenly conducts to the nozzle after the ceramic heat conducting piece is heated wholly promptly, reaches even, the effect of stable heating; or the heating component is arranged in the area between the ceramic heat conducting piece and the nozzle, the ceramic heat conducting piece can be heated by the heat emitted outwards by the heating component, the ceramic heat conducting piece heats the nozzle, the heat loss is reduced, and the ceramic heat conducting piece is sleeved on the nozzle, so that the nozzle can uniformly and stably heat.

According to some embodiments of the invention, the ceramic heat conducting member is sleeve-shaped.

According to some embodiments of the invention, the ceramic heat conducting member is threadably received by the outer surface of the nozzle.

According to some embodiments of the present invention, the ceramic heat conducting member and the nozzle are provided with a fixing glue therebetween.

According to some embodiments of the present invention, the heating component is a heating wire, and the heating wire is wound on the outer surface of the nozzle.

According to some embodiments of the invention, the outer surface of the nozzle is provided with an external thread which cooperates with the heating wire.

According to some embodiments of the present invention, the heating element is a heating circuit layer printed on the inner wall of the ceramic heat-conducting member.

According to some embodiments of the invention, the ceramic heat conducting member is further provided with a thermal sensor.

According to some embodiments of the invention, the nozzle further comprises a non-stick tube threaded pipe connected to the tail of the nozzle.

A print pen according to an embodiment of the second aspect of the invention comprises a print head as described above.

According to the utility model discloses printing pen has following beneficial effect at least: the utility model discloses a print pen adopts as above beat printer head, through heating element heating ceramic heat-conducting piece, the consumptive material in the ceramic heat-conducting piece heating nozzle of rethread reaches even, the effect of stabilizing the heating, makes the consumptive material better be the molten state, guarantees that the load of print pen is even, avoids the nib to block up.

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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is an exploded view of a printhead according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a printhead according to an embodiment of the present invention;

fig. 3 is an exploded view of a printing pen according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a printing pen according to an embodiment of the present invention.

Wherein: the device comprises a nozzle 101, a ceramic heat conducting piece 102, a heating component 103, external threads 104, a heat-sensitive sensor 105, a non-stick tube 106, a pen point 200, a shell 300, a motor 400, a conveying channel 500, a circuit board 600, a key 700, a storage battery 800 and an indicator lamp 900.

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 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 drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 and 2, a printhead includes a nozzle 101, a heating element 103, and a ceramic heat-conducting member 102 disposed on the nozzle 101, wherein the nozzle 101 has a channel for transporting consumables, i.e., the consumables are heated to a molten state when passing through the channel and then are sent out from the nozzle 101 to realize printing operation; specifically, the ceramic heat conducting member 102 is in a sleeve shape, that is, the nozzle 101 is disposed through the ceramic heat conducting member 102, such that heat on the ceramic heat conducting member 102 can be uniformly transferred to the nozzle 101, and uniform heating of the consumable material can be ensured; in some embodiments, the heat generating component 103 is disposed on the ceramic heat conducting member 102, and the heat generating component 103 may heat the ceramic heat conducting member 102 first, and then radiate heat to the nozzle 101 through the ceramic heat conducting member 102; in other embodiments, the heating element 103 may be disposed on the outer surface of the nozzle 101, that is, the heating element 103 is disposed in the region between the ceramic heat-conducting member 102 and the nozzle 101, so that the heating element 103 can directly heat the nozzle 101, thereby improving the heat conduction efficiency, and at this time, the heat dissipated from the heating element 103 heats the ceramic heat-conducting member 102, and the ceramic heat-conducting member 102 reheats the nozzle 101, thereby achieving the effect of uniformly and stably heating the consumable.

In some embodiments, the ceramic heat conducting member 102 is screwed onto the outer surface of the nozzle 101, specifically, the ceramic heat conducting member 102 is provided with an internal thread, and the nozzle 101 is provided with an external thread 104 matching with the internal thread, that is, the ceramic heat conducting member 102 is fixedly mounted on the nozzle 101 by screwing, so as to ensure the fixed connection between the ceramic heat conducting member 102 and the nozzle 101, and ensure the assembly quality of the printing head; in this embodiment, the heating element 103 may be disposed inside the ceramic heat conducting member 102 in the form of a printed circuit, and it should be noted that a heating circuit may be printed on the inner wall surface of the ceramic heat conducting member 102, and then a ceramic heat conducting layer is coated on the printed circuit for machining an internal thread.

In some embodiments, a fixing adhesive is further disposed between the ceramic heat conducting member 102 and the nozzle 101, and the fixing adhesive has two functions, one of which is to ensure that the ceramic heat conducting member 102 is fixedly connected with the nozzle 101, so as to ensure the assembling quality of the printing head, and the other one of which is to ensure the heat conducting effect of the heating assembly 103, so as to prevent heat emitted by the heating assembly 103 from flowing away along with air due to a gap between the ceramic heat conducting member 102 and the nozzle 101 when the heat is conducted.

Referring to fig. 1 and 2, the heating element 103 is a heating wire, and the heating wire is wound on the outer surface of the nozzle 101, so that the heating element 103 can directly heat the nozzle 101, the ceramic heat-conducting member 102 is sleeved on the nozzle 101, the heat emitted outwards by the heating element 103 can heat the ceramic heat-conducting member 102, the ceramic heat-conducting member 102 heats the nozzle 101 again or can ensure uniform temperature of the nozzle 101, further ensure uniform heating of consumables by the nozzle 101, and enhance heat conduction efficiency between the heating element 103 and the nozzle 101; in some embodiments, the outer surface of the nozzle 101 is provided with an external thread 104 matched with the heat generating component 103, i.e., the heat generating component 103 is wound on the external thread 104, which aims to increase the contact area between the heating wire and the nozzle 101 and further improve the heat transfer efficiency; in other embodiments, the inner wall surface of the ceramic heat conducting member 102 is also provided with an internal thread matching with the heating element 103, so as to increase the contact area between the ceramic heat conducting member 102 and the heating element 103 or reduce the gap between the heating element 103 and the ceramic heat conducting member 102, thereby further reducing heat loss, so that the heat emitted from the heating element 103 can heat the ceramic heat conducting member 102 more.

In some embodiments, the heating element 103 is a heating circuit layer printed on the inner wall of the ceramic heat conducting member 102, and it should be noted that the heating circuit layer has two extended electrical connection pins, and the heating circuit layer is connected to the circuit of the printing pen through the two electrical connection pins, so as to heat the ceramic heat conducting member 102 by the heating circuit layer, and then uniformly heat the nozzle 101 through the ceramic heat conducting member 102, thereby achieving the function of uniformly and stably heating the consumable.

Referring to fig. 1, a thermal sensor 105 is further disposed on the ceramic heat conducting member 102, and specifically, a cavity for accommodating the thermal sensor 105 is disposed on the ceramic heat conducting member 102, and the thermal sensor 105 may be coated on an outer surface of the ceramic heat conducting member 102, or may be fixed on the outer surface of the ceramic heat conducting member 102 by bonding, so as to accurately measure a temperature of the ceramic heat conducting member 102, and further measure a temperature of the nozzle 101, thereby preventing the nozzle 101 from being too hot and scalding a user or damaging a printing head.

Referring to fig. 1 and 2, the print head further includes a non-stick tube 106, the non-stick tube 106 is disposed at a tail portion of the nozzle 101, that is, the consumable is conveyed to the nozzle 101 through the non-stick tube 106, specifically, the non-stick tube 106 is fixed at the tail portion of the nozzle 101 through a threaded connection, which aims to facilitate assembly and reduce assembly production cost, and further, the non-stick tube 106 is ensured not to move relative to the nozzle 101 in the using process through the threaded connection, so as to ensure that an axis of the non-stick tube 106 coincides with an axis of a channel on the nozzle 101, and ensure stability of consumable conveying; in this embodiment, the non-stick tube 106 may be made of conventional teflon, and the non-stick tube 106 is disposed at the tail of the nozzle 101 to ensure that the consumable in a molten state staying at the print head does not stick to the conveying pipeline after cooling after the printing pen is turned off or not used, so as to avoid blocking the conveying channel.

Referring to fig. 3 and 4, the printing pen comprises the printing head as described above, and further comprises a pen head 200, a housing 300, a motor 400 and a conveying channel 500, wherein the conveying channel 500 is connected with the non-stick tube 106, the motor 400 is arranged on one side of the conveying channel 500, the printing head is arranged at the head of the housing 300 and is covered in the housing 300 through the pen head 200, the printing head is prevented from being exposed outside, and accidents such as scalding and the like caused by touching the printing head by mistake by people are prevented; the consumables penetrate from the conveying channel 500, and the consumables are driven by the motor 400 to be conveyed to the printing head along the conveying channel 500 and through the non-stick tube 106, so that the heating component 103 can uniformly and stably heat the consumables, and the printing pen is convenient to use; in some embodiments, the print pen further includes a circuit board 600, a key 700, an indicator lamp 900 and a storage battery 800, the heating element 103, the thermal sensor 105, the key 700, the indicator lamp 900, the storage battery 800 and the motor 400 are all electrically connected to the circuit board 600, a commercially available single chip microcomputer or programmable controller with a data processing function is integrated on the circuit board 600, an operator presses the key 700, and controls the motor 400 and the heating element 103 to open and close through the circuit board 600, further, the heating element 103 is firstly opened to heat consumables, the motor 400 can be started to convey the consumables when the temperature detected by the thermistor reaches a certain value, and when the temperature detected by the thermistor is too high, the indicator lamp 900 lights or flashes to prompt the operator that the print pen is too high in temperature and can be used after being cooled; it should be noted that the battery 800 may be used as a working power supply for the circuit board 600, the indicator lamp 900, and the motor 400; it should be noted that two unequal temperature values may be set, when the temperature detected by the thermal sensor 105 reaches one of the lower temperature values, the circuit board 600 may control the motor 400 to start, and when the temperature detected by the thermal sensor 105 reaches the other higher temperature value, the circuit board 600 controls the indicator lamp 900 to light up or flash, so as to achieve the alarm effect.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A printhead, comprising:

a nozzle (101) having a channel for transporting consumables;

the ceramic heat-conducting piece (102) is sleeved on the nozzle (101);

a heat generating component (103) disposed on the ceramic heat conducting member (102) or in an area between the nozzle (101) and the ceramic heat conducting member (102).

2. The printhead of claim 1 wherein the ceramic thermal conductor member (102) is sleeve-shaped.

3. The printhead of claim 2 wherein the ceramic thermal conductor member (102) is threaded onto an outer surface of the nozzle (101).

4. A printhead according to any of claims 1 to 3, wherein a fixing glue is arranged between the ceramic heat conducting member (102) and the nozzle (101).

5. The printhead of claim 1, wherein the heat generating component (103) is a heat wire that is wrapped around an outer surface of the nozzle (101).

6. Printhead according to claim 5, wherein the outer surface of the nozzle (101) is provided with an external thread (104) cooperating with the heater.

7. The printhead of claim 1 wherein the heat generating component (103) is a heat generating circuit layer printed on an inner wall of the ceramic thermal conductor member (102).

8. The printhead according to claim 1, wherein the ceramic thermal conductor member (102) is further provided with a thermal sensor (105).

9. The printhead of claim 1 further comprising a non-stick tube (106), the non-stick tube (106) being threaded to the rear of the nozzle (101).

10. Printing pen, characterized in that it comprises a printing head according to any of claims 1 to 9.