Extruder die head for producing 3D printing reinforced wires

Abstract

The utility model provides an extruder die head for producing 3D (three-dimensional) printing reinforced wires, which comprises a wire composite head and a flow guide forming cover, and the wire composite head comprises a flow cavity, a wire inlet hole and a wire outlet hole; the material flowing cavity is used for drainage of a fluid-shaped base body. Fibers enter the fiber outlet hole from the fiber inlet hole; the flow guide forming cover comprises a flow guide cavity and a forming opening; the flow guide cavity is used for guiding fluid to the forming opening; the fibers and the base body flow out of the forming opening to be formed; the silk material composite head is detachably connected with the flow guide forming cover; the extruder die head is used for producing FDM reinforced wires, and the preparation problem of reinforced wires containing core wires (fibers) is solved.

Description

Technical Field

[0001] The utility model relates to the production of 3D printing reinforced filaments, in particular to an extruder die head for producing 3D printing reinforced filaments. Background Art

[0002] 3D printing technology is an additive manufacturing method that can quickly process and manufacture precision parts with complex shapes and achieve personalized production without molds.

[0003] Among them, fused deposition modeling (FDM) 3D printing technology is one of the most widely used 3D printing technologies on the market at this stage because of its low cost of equipment and printing materials, simple preparation procedures, and the ability to print materials of a variety of materials.

[0004] At present, when using FDM equipment to print parts for actual application, it is found that the printed parts cannot meet the actual experimental strength requirements. At the same time, due to material requirements, only this type of printing filament can be used, resulting in a stagnation in progress. In addition, the filament used in FDM is generally a pure plastic material. The strength of the printed parts depends on the inherent characteristics of the filament material used. It cannot meet the higher strength requirements of the same material, resulting in the parts that need to be made of this material cannot be used in special application environments.

[0005] Therefore, it is necessary to improve the experimental requirements of printed parts by reinforcing the wire. The current direction of reinforcing the wire is to add a core wire to the original wire to improve the strength of the printed parts. Currently, there is no reinforcing wire containing a core wire (fiber) on the market. Therefore, based on the above reasons, the utility model designs an extruder die head that can produce reinforced wires, which is used to produce the required materials for subsequent experiments. Utility Model Content

[0006] The utility model provides an extruder die head for producing 3D printing reinforced filaments, which is used for producing FDM reinforced filaments and solves the difficult problem of preparing reinforced filaments containing core filaments (fibers).

[0007] In order to solve the above-mentioned technical problems, the utility model provides an extruder die head for producing 3D printing enhanced filaments, including a filament composite head, including a flow cavity, a wire inlet hole and a wire outlet hole; the flow cavity is used for draining a fluid-like matrix; the fiber enters from the wire inlet hole and exits from the wire outlet hole; a diversion molding cover, including a diversion cavity and a molding port; the diversion cavity is used to divert the fluid to the molding port; the fiber and the matrix both flow out of the molding port and are molded; the filament composite head and the diversion molding cover are detachably connected.

[0008] In a preferred embodiment, the guide forming cover is fastened to the wire composite head by bolt connection.

[0009] In a preferred embodiment, a sealing groove is provided on the wire composite head, and a sealing boss is provided on the flow guide molding cover, and the sealing groove and the sealing boss are tightly matched.

[0010] In a preferred embodiment, the filament composite head is fastened to the extruder by screwing.

[0011] In a preferred embodiment, the wire outlet hole is located on the central axis of the wire composite head.

[0012] In a preferred embodiment, the wire feeding hole is arranged on a side of the wire composite head perpendicular to the central axis of the wire composite head.

[0013] In a preferred embodiment, the wire inlet hole is connected to the wire outlet hole to form a wire inlet channel for fibers to pass through.

[0014] In a preferred embodiment, the molding port and the wire outlet hole are coaxially arranged.

[0015] In a preferred embodiment, the material flow cavity and the wire outlet hole are connected to the flow guide cavity.

[0016] Compared with the prior art, the technical solution of the utility model has the following beneficial effects:

[0017] Provided is an extruder die head for producing 3D printing reinforced filaments, which can wrap the reinforcing fibers in the center of the matrix to obtain the desired reinforced filaments. The extruder die head can achieve rapid production of reinforced filaments, and can quickly make and use filaments for both practical applications and scientific research. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded schematic diagram of one state of the extruder die head in the preferred embodiment of the utility model;

[0019] Figure 2 This is an exploded schematic diagram of another state of the extruder die head in the preferred embodiment of the utility model;

[0020] Figure 3 It is a partial cross-sectional view of the extruder die head in the preferred embodiment of the utility model when it is working.

[0021] Explanation of the reference numerals: 1. Wire composite head; 11. Flow cavity; 12. Wire inlet hole; 13. Wire outlet hole; 14. Sealing groove; 15. M22 thread; 2. Diversion molding cover; 21. Diversion cavity; 22. Molding port; 23. Sealing boss; 3. M3 bolt; 4. Fiber; 5. Matrix; 6. Reinforced wire. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present utility model, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "installed / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0025] refer to Figure 1-Figure 3 This embodiment provides an extruder die head for producing 3D printing reinforced wire material 6. The extruder die head is mainly used to produce FDM reinforced wire material 6, which can be used for daily FDM printing, and can also be used for the reinforcement of the same wire material with different core wires (fibers 4). The extruder die head can wrap the reinforcing fiber 4 in the center of the matrix 5 to obtain the desired reinforced wire material 6; and can produce additive wire materials with different fibers 4 in the same matrix 5.

[0026] The extruder die head includes a wire composite head 1 and a flow guide molding cover 2. The wire composite head 1 and the flow guide molding cover 2 are installed with a sealing structure on their end faces. A sealing groove 14 is provided on the end face of the wire composite head 1, and a sealing boss 23 is provided on the end face of the flow guide molding cover 2. The sealing groove 14 and the sealing boss 23 are tight fits. Tight fits refer to that the geometric shapes of the sealing groove 14 and the geometric shapes of the sealing boss 23 are respectively designed as two parts that match each other, and can fit together perfectly to achieve a sealing effect. In this way, after the sealing boss 23 is inserted into the sealing groove 14, a moderate tight fit will be produced, thereby effectively preventing liquid from leaking from the sealing position and increasing the reliability and stability of the seal. The installation of the wire composite head 1 and the flow guide molding cover 2 is connected and fastened by an M3 bolt 3, and under the tight fit of the sealing groove 14 and the sealing boss 23, the outflow of the fluid-like matrix 5 can be prevented when producing the reinforced wire 6.

[0027] The composite head 1 includes a flow cavity 11, a wire inlet hole 12 and a wire outlet hole 13; the flow cavity 11 is used for draining the fluid matrix 5; the fiber 4 enters from the wire inlet hole 12 and exits from the wire outlet hole 13. The wire outlet hole 13 is located on the central axis of the composite head 1, and the wire inlet hole 12 is arranged on the side of the composite head 1 perpendicular to the central axis of the composite head 1. The wire inlet hole 12 is connected to the wire outlet hole 13 to form a wire inlet channel, and the wire inlet channel is for the fiber 4 to pass through.

[0028] The flow guiding and forming cover 2 comprises a flow guiding cavity 21 and a forming port 22. The flow guiding cavity 21 is used to guide the fluid to the forming port 22. The fibers 4 and the matrix 5 are formed by flowing out of the forming port 22. The forming port 22 is coaxially arranged with the wire outlet hole 13, and the flow cavity 11 and the wire outlet hole 13 are connected with the flow guiding cavity 21.

[0029] The end of the composite head 1 away from the flow guide molding cover 2 is provided with an M22 thread 15, which can be matched with the threaded hole on the extruder, so that the composite head 1 is fixed on the extruder. The flow cavity 11 in the composite head 1 can guide the fluid matrix 5 to the flow guide cavity 21 in the flow guide molding cover 2, and the fiber 4 enters from the wire inlet hole 12 and exits from the wire outlet hole 13, so that the fiber 4 is located at the center of the matrix 5 when producing the reinforced wire 6. The fluid matrix 5 is guided to the molding port 22 through the flow guide cavity 21 on the flow guide molding cover 2, and the fiber 4 and the matrix 5 flow out through the molding port 22 for molding.

[0030] The molding port 22 is coaxially arranged with the wire outlet hole 13 , which can ensure that the fiber 4 can be wrapped in the fluid matrix 5 , and after molding, a core wire can be formed in the matrix 5 to obtain a reinforced wire material 6 .

[0031] refer to Figure 3When the extruder die is working, before starting work, the selected fiber 4 is passed through the wire inlet hole 12 to the wire outlet hole 13, and finally passes out of the molding port 22; as the fluid matrix 5 flows into the guide cavity 21, it wraps the fiber 4 and flows out of the molding hole. After the core-wrapped wire flowing out of the molding hole is cooled, the required reinforcing wire 6 is formed.

[0032] The above is only a preferred specific implementation method of the utility model, but the design concept of the utility model is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the utility model within the technical scope disclosed by the utility model shall be deemed to infringe the protection scope of the utility model.

Claims

1. An extruder die head for producing 3D printing reinforced filaments, characterized in that: It comprises a wire composite head, including a flow cavity, a wire inlet hole and a wire outlet hole; the flow cavity is used for draining the fluid matrix; The fiber enters from the inlet hole and exits from the outlet hole; The flow-guiding molding cover comprises a flow-guiding cavity and a molding port; the flow-guiding cavity is used to guide the fluid to the molding port; the fibers and the matrix are both formed by flowing out of the molding port; the silk composite head is detachably connected to the flow-guiding molding cover.

2. An extruder die head for producing 3D printing reinforced filaments according to claim 1, characterized in that: The guide molding cover is fastened to the wire composite head by bolt connection.

3. An extruder die head for producing 3D printing reinforced filaments according to claim 2, characterized in that: The wire composite head is provided with a sealing groove, the flow guide molding cover is provided with a sealing boss, and the sealing groove and the sealing boss are tightly matched.

4. The extruder die head for producing 3D printing reinforced filaments according to claim 1, characterized in that: The wire composite head is fastened to the extruder by screwing.

5. The extruder die head for producing 3D printing reinforced filaments according to claim 1, characterized in that: The wire outlet hole is located on the central axis of the wire composite head.

6. An extruder die head for producing 3D printing reinforced filaments according to claim 5, characterized in that: The wire feeding hole is arranged on the side of the wire composite head perpendicular to the central axis of the wire composite head.

7. An extruder die head for producing 3D printing reinforced filaments according to claim 6, characterized in that: The wire inlet hole is connected to the wire outlet hole to form a wire inlet channel, and the fibers can pass through the wire inlet channel.

8. An extruder die head for producing 3D printing reinforced filaments according to claim 7, characterized in that: The forming opening is coaxially arranged with the wire outlet hole.

9. An extruder die head for producing 3D printing reinforced filaments according to claim 8, characterized in that: The material flow cavity and the wire outlet hole are communicated with the flow guide cavity.

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