Printer nozzle structure

Abstract

The utility model discloses a printer nozzle structure which comprises a storage tank, the bottom of the storage tank is connected with a feeding cylinder in a penetrating mode, the outer wall of the bottom of the feeding cylinder is provided with an external thread face, the external thread face is sleeved with a nozzle body in a threaded mode, the nozzle body is communicated with the interior of the feeding cylinder, and a conveying mechanism is arranged in the storage tank. The material conveying mechanism comprises a partition plate fixedly connected in the material storage tank, and a transmission shaft is connected to the partition plate in a rotating and penetrating mode. According to the printer nozzle structure, heated raw materials in the storage tank can be conveyed into the feeding barrel through the arranged conveying mechanism, the discharging speed of the raw materials can be controlled by controlling the rotating speed of a conveying auger, and therefore the spraying speed of the materials can be adjusted according to the printing requirement; and excessive pressure caused by excessive accumulation of raw materials in the nozzle is avoided, so that the spraying effect of the raw materials is improved, and the printing precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printer nozzles, in particular to a printer nozzle structure. Background Art

[0002] With the rapid advancement of science and technology, printing technology has become an important innovation tool in many industries, including manufacturing, medical and construction. This technology creates three-dimensional objects with specific shapes and functions by stacking materials layer by layer. The key lies in the precise control of the nozzle assembly and the work of the feeding device. As the core component of the printer, the nozzle assembly is responsible for accurately spraying molten plastic or other materials to the specified position to form the required three-dimensional structure.

[0003] Publication No. CN 219820658U discloses a 3D printer nozzle structure, including a stirring mechanism, which is slidably connected to the inside of a top block, an adjusting mechanism, which is fixedly connected to both sides of the inner wall of a rubber sleeve, and a stirring mechanism is provided. The structure is provided with stirring blades and heating wires, so as to achieve the purpose of fully stirring and heating the printing raw materials. When the slider moves horizontally on the threaded rod, the second motor is started to control the vertical rod and the stirring blades arranged on both sides to rotate, thereby achieving stirring of the resin material. The heating wire allows the resin material to be heated while being stirred evenly, which prevents the raw materials from being cooled and solidified prematurely, avoids uneven discharge of the nozzle and even the appearance of solid residues, does not affect the final effect of 3D printing, saves raw materials, and brings convenience to the production process.

[0004] However, the nozzle structure has the following shortcomings: the device can heat and stir the raw materials when in use, which is convenient for the use of the nozzle. However, since the raw materials need to be transported to the inner shell of the nozzle for printing during use, the amount of raw materials transported cannot be controlled during the transportation process, resulting in too much raw material in the inner shell of the nozzle, which makes the nozzle easily clogged, affecting its use.

[0005] Therefore, the utility model provides a printer nozzle structure to solve the above problems. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a printer nozzle structure to solve the above problems.

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a printer nozzle structure, including a storage tank, the bottom of the storage tank is connected with a feeding cylinder, the bottom outer wall of the feeding cylinder is provided with an external thread surface, the external thread surface is threadedly sleeved with a nozzle body, the nozzle body is connected with the inside of the feeding cylinder, and a feeding mechanism is provided in the storage tank;

[0008] The feeding mechanism includes a partition fixedly connected to the storage tank, a transmission shaft is rotatably connected to the partition, a plurality of first stirring paddles are fixedly sleeved on the transmission shaft, a feeding auger is fixedly connected to the bottom end of the transmission shaft, the bottom end of the feeding auger extends into the feeding barrel, a mounting cover is fixedly connected to the top of the storage tank, the top end of the transmission shaft rotatably extends into the mounting cover, a driving motor is fixedly connected in the mounting cover, and the output shaft of the driving motor is connected to the transmission shaft.

[0009] Preferably, the partition is rotatably connected with two symmetrically distributed rotating shafts, and a plurality of second stirring paddles are fixedly sleeved on the two rotating shafts. The rotating shafts and the second stirring paddles are used in combination to stir the interior of the storage tank, thereby increasing the stirring range and preventing the resin material from solidifying.

[0010] Preferably, a driving gear is fixedly sleeved on the transmission shaft, and a driven gear is fixedly sleeved on the two rotating shafts, and the two driven gears are meshed with the driving gear. The driving gear and the driven gear are used in combination to conveniently control the transmission shaft to drive the two rotating shafts to rotate synchronously.

[0011] Preferably, the outer wall fixed sleeve of the storage tank is provided with an insulation sleeve, the bottom of the insulation sleeve is connected to the outer wall of the feeding barrel, the outer wall fixed sleeve of the storage tank is provided with a plurality of first annular electric heating wires, and the outer wall fixed sleeve of the feeding barrel is provided with a plurality of second annular electric heating wires. By using the insulation sleeve, the first annular electric heating wires and the second annular electric heating wires in combination, the interior of the storage tank and the feeding barrel can be heated to prevent condensation of the resin material.

[0012] Preferably, the outer wall of the thermal insulation sleeve is provided with two air holes, and filters are fixedly connected to the two air holes. The combination of the air holes and the filters can facilitate ventilation of the thermal insulation sleeve and prevent the internal temperature of the thermal insulation sleeve from being too high.

[0013] Preferably, a feed pipe is fixedly connected to the outer wall of the storage tank, one end of the feed pipe is fixedly connected to a connecting piece, and a sealing ring is fixedly connected to the inside of the connecting piece. The feed pipe, connecting piece and sealing ring can be used together to facilitate connection with the printer, thereby facilitating feeding.

[0014] Preferably, a fixing bracket is fixedly connected to the top of the storage tank, and a plurality of screw holes are provided on the fixing bracket. The storage tank can be conveniently installed and connected by using the fixing bracket and the screw holes in combination.

[0015] Beneficial Effects

[0016] The utility model provides a printer nozzle structure. Compared with the prior art, it has the following beneficial effects:

[0017] (1) The printer nozzle structure can transport the heated raw materials in the storage tank to the feeding tube through the provided feeding mechanism, and can control the feeding speed of the raw materials by controlling the rotation speed of the feeding auger, so as to adjust the material injection speed according to the printing requirements, avoid excessive pressure caused by too much accumulation of raw materials inside the nozzle, thereby improving the injection effect of the raw materials and improving the printing accuracy.

[0018] (2) The printer nozzle structure can continuously stir the raw materials inside the material storage tank through the rotating shaft and the second stirring device arranged in the material storage tank to prevent the raw materials from solidifying. At the same time, the first annular electric heating wire and the second annular electric heating wire can continuously heat the raw materials to prevent them from cooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0020] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 It is a schematic cross-sectional view of the material storage tank in the utility model;

[0022] Figure 4 It is a relevant assembly drawing of the transmission shaft and the rotating shaft in the utility model.

[0023] In the figure: 1. storage tank; 2. feeding barrel; 3. external threaded surface; 4. nozzle body; 5. partition; 6. transmission shaft; 7. first stirring paddle; 8. feeding auger; 9. installation cover; 10. driving motor; 11. rotating shaft; 12. second stirring paddle; 13. driving gear; 14. driven gear; 15. insulation sleeve; 16. first annular electric heating wire; 17. second annular electric heating wire; 18. air vent; 19. filter screen; 20. feeding pipe; 21. connecting piece; 22. sealing ring; 23. fixing bracket; 24. screw hole. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Embodiment 1:

[0026] See also Figure 1 and Figure 2A printer nozzle structure includes a storage tank 1, a feeding tube 2 is connected through the bottom of the storage tank 1, an outer wall of the bottom of the feeding tube 2 is provided with an external thread surface 3, a nozzle body 4 is threadedly sleeved on the external thread surface 3, the nozzle body 4 is connected with the inside of the feeding tube 2, and a feeding mechanism is provided in the storage tank 1;

[0027] The feeding mechanism includes a partition 5 fixedly connected to the storage tank 1, a transmission shaft 6 is rotatably connected to the partition 5, a plurality of first stirring paddles 7 are fixedly sleeved on the transmission shaft 6, a feeding auger 8 is fixedly connected to the bottom end of the transmission shaft 6, the bottom end of the feeding auger 8 extends into the feeding barrel 2, a mounting cover 9 is fixedly connected to the top of the storage tank 1, the top end of the transmission shaft 6 rotatably extends into the mounting cover 9, a driving motor 10 is fixedly connected in the mounting cover 9, and the output shaft of the driving motor 10 is connected to the transmission shaft 6.

[0028] Embodiment 2:

[0029] See also Figures 1 to 4 This embodiment provides a technical solution based on the first embodiment: two symmetrically distributed rotating shafts 11 are rotatably connected to the partition 5, and a plurality of second stirring paddles 12 are fixedly sleeved on the two rotating shafts 11, and the second stirring paddles 12 are alternately distributed with the first stirring paddles 7; a driving gear 13 is fixedly sleeved on the transmission shaft 6, and a driven gear 14 is fixedly sleeved on the two rotating shafts 11, and the two driven gears 14 are meshed with the driving gear 13; an outer wall of the storage tank 1 is fixedly sleeved with a heat preservation sleeve 15, and the bottom of the heat preservation sleeve 15 is in contact with the outer wall of the feeding tube 2. The outer wall fixed sleeve of the storage tank 1 is provided with a plurality of first annular electric heating wires 16, and the outer wall fixed sleeve of the feeding tube 2 is provided with a plurality of second annular electric heating wires 17; the outer wall of the insulation sleeve 15 is provided with two air holes 18, and the two air holes 18 are fixedly connected with filter screens 19; the outer wall of the storage tank 1 is fixedly connected with a feed pipe 20, one end of the feed pipe 20 is fixedly connected with a connecting piece 21, and a sealing ring 22 is fixedly connected inside the connecting piece 21; the top of the storage tank 1 is fixedly connected with a fixed bracket 23, and the fixed bracket 23 is provided with a plurality of screw holes 24.

[0030] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0031] Working principle: When in use, it only needs to be connected to the pipeline of the printer through the connecting piece 21. When the resin material used for printing enters the storage tank 1, the drive motor 10, the first annular electric heating wire 16 and the second annular electric heating wire 17 are started. The drive motor 10 drives the transmission shaft 6 to rotate, and the transmission shaft 6 drives the first stirring paddle 7 and the feeding auger 8 to rotate. At the same time, the transmission shaft 6 drives the two driven gears 14 meshing with it to rotate through the driving gear 13, and the driven gear 14 drives the connected rotating shaft 11 to rotate, and the rotating shaft 11 drives the second stirring paddle 12 to rotate. The material is stirred by the first stirring paddle 7 and the second stirring paddle 12. At the same time, the first annular electric heating wire 16 and the second annular electric heating wire 17 can heat the inside of the storage tank 1 and the feeding barrel 2 respectively. At the same time, the feeding auger 8 can drive the resin material in a paste-like liquid state after melting to flow, so that it enters the nozzle body 4 in an orderly manner and is finally ejected. At the same time, it is only necessary to control the speed of the drive motor 10 to control the speed of the feeding auger 8 to adjust the speed of the resin material entering the nozzle body 4, which is convenient for adjustment and use.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] In the description of this article, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A printer nozzle structure, comprising a material storage tank (1), characterized in that: The bottom of the material storage tank (1) is connected with a feeding barrel (2), the bottom outer wall of the feeding barrel (2) is provided with an external thread surface (3), a nozzle body (4) is threadedly sleeved on the external thread surface (3), the nozzle body (4) is connected with the inside of the feeding barrel (2), and a feeding mechanism is provided in the material storage tank (1); The feeding mechanism comprises a partition (5) fixedly connected to the storage tank (1), a transmission shaft (6) rotatably extending through the partition (5), a plurality of first stirring paddles (7) fixedly sleeved on the transmission shaft (6), a feeding auger (8) fixedly connected to the bottom end of the transmission shaft (6), the bottom end of the feeding auger (8) extending into the feeding barrel (2), a mounting cover (9) fixedly connected to the top of the storage tank (1), the top end of the transmission shaft (6) rotatably extending into the mounting cover (9), a driving motor (10) fixedly connected inside the mounting cover (9), and the output shaft of the driving motor (10) connected to the transmission shaft (6).

2. A printer nozzle structure according to claim 1, characterized in that: The partition plate (5) is rotatably connected to and penetrates two symmetrically distributed rotating shafts (11), and a plurality of second stirring paddles (12) are fixedly sleeved on the two rotating shafts (11).

3. A printer nozzle structure according to claim 2, characterized in that: A driving gear (13) is fixedly sleeved on the transmission shaft (6), and a driven gear (14) is fixedly sleeved on the two rotating shafts (11), and the two driven gears (14) are meshed with the driving gear (13).

4. A printer nozzle structure according to claim 1, characterized in that: The outer wall fixed sleeve of the storage tank (1) is provided with a heat-insulating sleeve (15), the bottom of the heat-insulating sleeve (15) is connected to the outer wall of the feeding barrel (2), the outer wall fixed sleeve of the storage tank (1) is provided with a plurality of first annular electric heating wires (16), and the outer wall fixed sleeve of the feeding barrel (2) is provided with a plurality of second annular electric heating wires (17).

5. A printer nozzle structure according to claim 4, characterized in that: The outer wall of the thermal insulation sleeve (15) is provided with two air vents (18), and filter screens (19) are fixedly connected to the two air vents (18).

6. A printer nozzle structure according to claim 1, characterized in that: A feed pipe (20) is fixedly connected to the outer wall of the storage tank (1), a connecting piece (21) is fixedly connected to one end of the feed pipe (20), and a sealing ring (22) is fixedly connected inside the connecting piece (21).

7. A printer nozzle structure according to claim 1, characterized in that: A fixing bracket (23) is fixedly connected to the top of the material storage tank (1), and a plurality of screw holes (24) are provided on the fixing bracket (23).

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