Micro spray head for 3D (three-dimensional) bio-printer

Abstract

The utility model relates to the technical field of 3D (three-dimensional) bio-printers, in particular to a micro spray head for a 3D bio-printer. The micro spray head comprises a material cavity used for containing materials and a spray head body installed at the lower end of the material cavity, a first stirring piece and a plurality of second stirring pieces are vertically arranged in the material cavity, the first stirring piece and the second stirring pieces are the same in rotation direction, and the second stirring pieces are arranged in a bilateral symmetry mode relative to the first stirring piece; the first stirring piece comprises a center rod and a plurality of stirring rods which are arranged on the center rod in a bilateral symmetry mode at equal intervals, and the axial direction of each stirring rod is the same as the radial direction of the center rod; the second stirring piece is a spiral auger; the first stirring part and the plurality of second stirring parts are driven by a first driving part; the material mixing device is used for stirring and mixing materials and conveying the materials to the spray head at the lower end part of the material cavity, so that the material mixing effect can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D bio-printers, in particular to a micro-sprinkler used for a 3D bio-printer. Background Art

[0002] A 3D bioprinter is a device that can, driven by a digital three-dimensional model, locate and assemble biological materials or cell units according to the principles of additive manufacturing to manufacture medical devices, tissue engineering scaffolds, tissue organs and other products. This machine first reads in a three-dimensional model reconstructed or designed by medical imaging data, discretizes the model into multiple layers, and then uses a computer to control the print head to print biological ink composed of biological materials or cells layer by layer, repeating this process until the three-dimensional tissue precursor is printed. Subsequently, the cells begin to reorganize and fuse to form new blood vessels and other tissue structures.

[0003] However, the micro-nozzle of the biological 3D printer in the prior art generally does not have a very good stirring effect on the materials in the nozzle. The device only relies on unidirectional stirring, which easily causes the materials to sink to the bottom, reducing the mixing effect of multiple materials in the nozzle. A micro-nozzle for a 3D biological printer is proposed to solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of the utility model is to provide a micro-sprinkler for a 3D bio-printer, so as to solve the problem that the micro-sprinkler of the bio-3D printer in the prior art generally has a poor stirring effect on the materials in the nozzle. The device only relies on stirring in one direction, which easily causes the materials to sink to the bottom, thereby reducing the mixing effect of multiple materials in the nozzle.

[0005] The technical solution of the utility model is: a micro-sprinkler for a 3D bioprinter, comprising: the micro-sprinkler comprises a material cavity for containing materials, a nozzle installed at the lower end of the material cavity, a first stirring member and a plurality of second stirring members are vertically arranged in the material cavity, the first stirring member and the second stirring member have the same rotation direction, and the plurality of second stirring members are arranged symmetrically relative to the first stirring member; the first stirring member comprises a center rod, a plurality of stirring rods symmetrically arranged on the center rod at equal intervals, and the axial direction of each stirring rod is in the same direction as the radial direction of the center rod; the second stirring member is a spiral dragon.

[0006] Preferably, the first stirring member and the plurality of the second stirring members are all driven by a first driving member.

[0007] Preferably, an independent mounting cavity is fixedly provided at the top of the material cavity, and the first driving member is installed on the mounting cavity; the output shaft of the first driving member is connected to a horizontally arranged rotating rod through a coupling, and the rotating rod is respectively connected to the first stirring member and multiple second stirring members through mutually meshing bevel gears.

[0008] Preferably, the number of the first stirring members is one, and the number of the second stirring members is two;

[0009] The material cavity is connected with a material conveying pipe.

[0010] Preferably, a mounting portion is fixed to the top of the mounting cavity, and the mounting portion includes a cylindrical boss, an outer ring platform with a cylindrical inner wall arranged on the outer periphery of the boss, and a threaded tube with a threaded inner wall arranged on the top surface of the boss; there is a gap between the boss and the outer ring platform to form an annular groove, and the boss and the outer ring platform are radially penetrated to form a first bolt hole for installing bolts.

[0011] Preferably, the micro-sprinkler is installed on a fixing seat through a mounting portion, a threaded rod threadedly connected to a threaded pipe is provided at the bottom end of the fixing seat, a positioning tube which can be inserted into an annular groove is provided at the outer periphery of the threaded rod, and a second bolt hole corresponding to the first bolt hole is provided on the positioning tube for installing the same bolt.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] (1) In the utility model, a micro-sprinkler for a 3D bioprinter is provided, wherein the motor output shaft rotates to drive the rotating rod to rotate, and the rotating rod then drives three first bevel gears to rotate, and the three first bevel gears then drive three second bevel gears to rotate, and the three second bevel gears then drive the first stirring member and two spiral dragons to rotate, so as to stir and mix the materials and transport the materials to the nozzle at the lower end of the material cavity, thereby effectively improving the effect of mixing the materials.

[0014] (2) A micro-sprinkler for a 3D bio-printer in the utility model, when installing the micro-sprinkler, first screw the threaded tube of the mounting portion onto the threaded tube of the fixing seat, while making the central axes of the first bolt hole and the second bolt hole in the same straight line, then use bolts to penetrate the outer ring, the positioning tube, and the boss, and then screw on the nuts to complete the installation and positioning of the micro-sprinkler on the fixing seat. The micro-sprinkler is very convenient to disassemble and install. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] Figure 1 This is a schematic structural diagram of a micro-sprinkler for a 3D bio-printer installed on a fixed base according to this embodiment;

[0017] Figure 2 for Figure 1 A schematic cross-sectional structure diagram of ;

[0018] Figure 3 This is a schematic structural diagram of a micro-sprinkler for a 3D bio-printer described in this embodiment;

[0019] Figure 4 Schematic diagram of the structure of the fixing base described in this embodiment.

[0020] Wherein: 1. material cavity, 2. nozzle, 3. first stirring member, 4. center rod, 5. stirring rod, 6. spiral dragon, 7. feed pipe, 8. installation cavity, 9. motor, 10. rotating rod, 11. first bevel gear, 12. second bevel gear, 13. installation part, 14. boss, 15. outer ring platform, 16. annular groove, 17. first bolt hole, 18. fixing seat, 19. threaded rod, 20. positioning tube, 21. second bolt hole, 22. bolt, 23. nut, 24. threaded tube. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0022] In the description of the utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, and do 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 therefore cannot be understood as a limitation on the utility model.

[0023] like Figure 1 , Figure 2 As shown, a micro-sprinkler for a 3D bioprinter comprises: the micro-sprinkler comprises a material cavity 1 for containing materials, a nozzle 2 installed at the lower end of the material cavity 1, a first stirring member 3 and a plurality of second stirring members are vertically arranged in the material cavity 1, the first stirring member 3 and the second stirring member have the same rotation direction, and the plurality of second stirring members are arranged symmetrically relative to the first stirring member 3; the first stirring member 3 comprises a central rod 4, a plurality of stirring rods 5 symmetrically arranged on the central rod 4 at equal intervals, and the axial direction of each stirring rod 5 is in the same radial direction as the central rod 4; the second stirring member is a spiral dragon 6. The first stirring member 3 and the plurality of second stirring members are driven by the first driving member. The material cavity 1 is connected with a feed pipe 7.

[0024] An independent mounting cavity 8 is fixedly provided at the top of the material cavity 1, and the first driving member is installed on the mounting cavity 8; the output shaft of the first driving member is connected to a horizontally arranged rotating rod 10 through a coupling, and the rotating rod 10 is respectively connected to the first stirring member 3 and multiple second stirring members through mutually meshing bevel gears, and the first driving member is a motor 9. In this embodiment, the number of the first stirring members 3 is one, and the number of the second stirring members is two. Of course, the second stirring members can also be set to four or more even numbers, which is not limited here. Specifically, each pair of mutually meshing bevel gears is a first bevel gear 11 and a second bevel gear 12, and the three first bevel gears 11 are fixedly mounted on the rotating rod 10, and the three second bevel gears 12 are respectively fixedly mounted on the center rod 4 of the first stirring member 3 and the two spiral dragons 6.

[0025] The working principle of a micro-sprinkler for a 3D bioprinter in the utility model is as follows: the output shaft of a motor 9 rotates to drive a rotating rod 10 to rotate, the rotating rod 10 then drives three first bevel gears 11 to rotate, the three first bevel gears 11 then drive three second bevel gears 12 to rotate, the three second bevel gears 12 then drive a first stirring member 3 and two spiral dragons 6 to rotate, stir and mix the materials and transport the materials to the nozzle 2 at the lower end of the material cavity 1, which can effectively improve the effect of mixing the materials.

[0026] like Figure 3 As shown, a mounting portion 13 is fixed to the top of the mounting cavity 8, and the mounting portion 13 includes a cylindrical boss 14, an outer ring 15 with a cylindrical inner wall arranged on the outer periphery of the boss 14, and a threaded tube 24 with a threaded inner wall arranged on the top surface of the boss 14; there is a gap between the boss 14 and the outer ring 15 to form an annular groove 16, and the boss 14 and the outer ring 15 are radially penetrated to form a first bolt hole 17 for mounting a bolt 22. The micro-sprinkler is installed on the fixing seat 18 through the mounting portion 13, as shown in FIG. Figure 4 As shown, the bottom end of the fixing seat 18 is provided with a threaded rod 19 threadedly connected with the threaded tube 24, and the outer periphery of the threaded rod 19 is provided with a positioning tube 20 that can be inserted into the annular groove 16, and the positioning tube 20 is provided with a second bolt hole 21 corresponding to the first bolt hole 17 for installing the same bolt 22. When installing the micro sprinkler, first screw the threaded tube 24 of the mounting portion 13 onto the threaded tube 24 of the fixing seat 18, and at the same time make the central axis of the first bolt hole 17 and the second bolt hole 21 in the same straight line, and then use the bolt 22 to penetrate the outer ring 15, the positioning tube 20, and the boss 14, and then screw on the nut 23, so as to complete the installation and positioning of the micro sprinkler on the fixing seat 18, and the disassembly and installation of the micro sprinkler are very convenient.

[0027] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A micro-sprinkler for a 3D bioprinter, characterized in that: include: The micro-sprinkler includes a material cavity for containing materials and a nozzle installed at the lower end of the material cavity. A first stirring member and multiple second stirring members are vertically arranged in the material cavity. The first stirring member and the second stirring member have the same rotation direction, and the multiple second stirring members are symmetrically arranged relative to the first stirring member. The first stirring member includes a center rod and multiple stirring rods symmetrically arranged on the center rod at equal intervals, and the axial direction of each stirring rod is in the same direction as the radial direction of the center rod. The second stirring member is a spiral dragon.

2. A micro-sprinkler for a 3D bio-printer according to claim 1, characterized in that: The first stirring member and the plurality of second stirring members are all driven by a first driving member.

3. A micro-sprinkler for a 3D bio-printer according to claim 2, characterized in that: An independent mounting cavity is fixedly provided at the top of the material cavity, and the first driving member is mounted on the mounting cavity; the output shaft of the first driving member is connected to a horizontally arranged rotating rod through a coupling, and the rotating rod is respectively connected to the first stirring member and multiple second stirring members through mutually meshing bevel gears.

4. A micro-sprinkler for a 3D bio-printer according to claim 3, characterized in that: The number of the first stirring members is one, and the number of the second stirring members is two; The material cavity is connected with a material conveying pipe.

5. A micro-sprinkler for a 3D bio-printer according to claim 3, characterized in that: A mounting portion is fixed to the top of the mounting cavity, and the mounting portion includes a cylindrical boss, an outer ring platform with a cylindrical inner wall arranged on the outer periphery of the boss, and a threaded tube with a threaded inner wall arranged on the top surface of the boss; there is a gap between the boss and the outer ring platform to form an annular groove, and the boss and the outer ring platform are radially penetrated together to form a first bolt hole for installing bolts.

6. A micro-sprinkler for a 3D bio-printer according to claim 5, characterized in that: The micro-sprinkler is installed on a fixing seat through a mounting portion. A threaded rod threadedly connected to a threaded pipe is provided at the bottom end of the fixing seat. A positioning tube that can be inserted into an annular groove is provided on the outer periphery of the threaded rod. A second bolt hole corresponding to the first bolt hole is opened on the positioning tube for installing the same bolt.

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