Ultrasonic printing head suitable for short fiber reinforced polymer composite material

Abstract

The utility model belongs to the technical field of manufacturing of short fiber reinforced polymer composite materials, and particularly relates to an ultrasonic printing head suitable for the short fiber reinforced polymer composite materials, which comprises a shell, a melting cabin is arranged in an inner cavity of the shell, and two mutually symmetrical low-temperature rollers are mounted in the inner cavity of the shell. A high-temperature roller and an extrusion roller are arranged at an inlet and an outlet of the melting cabin respectively, the outlet end of the shell is fixedly connected with a nozzle, an ultrasonic module is fixedly connected to the outer side of the shell, and the position of the ultrasonic module is parallel to the melting cabin in the shell. The ultrasonic module is adopted to heat and melt the wire and stir the melt, the orientation arrangement of fibers is changed through mutual cooperation with the low-temperature roller, the high-temperature roller and the extrusion roller, and the problem of nozzle blockage in the wire printing process can be solved.

Description

Technical Field

[0001] This utility model belongs to the field of manufacturing technology of short fiber reinforced polymer composite materials, and specifically relates to an ultrasonic printing head for short fiber reinforced polymer composite materials. Background Technology

[0002] Compared to pure polymer materials, short-fiber reinforced polymer composites exhibit superior mechanical properties, heat resistance, and corrosion resistance, leading to their widespread application in modern industry. These materials significantly improve overall performance by combining the flexibility of polymers with the reinforcing effect of short fibers. Commonly used matrix materials include polyetheretherketone (PEEK), acrylonitrile-butadiene-styrene (ABS), and nylon (PA), while commonly used reinforcing agents include carbon fiber and glass fiber.

[0003] In existing manufacturing processes, Fused Deposition Modeling (FDM) technology has become a highly regarded printing method due to its advantages such as ease of operation, low equipment cost, wide applicability of materials, and short manufacturing cycle. FDM technology uses thermoplastics as the printing material, melting them through heating and depositing them layer by layer according to a pre-set three-dimensional model to ultimately construct a solid model. However, when FDM printing short-fiber reinforced polymer composites, the influence of printing parameters on the internal fiber state of the material cannot be ignored. For example, the orientation and arrangement of fibers may change due to variations in printing parameters, thus affecting the mechanical properties of the material. Furthermore, fiber breakage may occur during the printing process, which not only reduces the strength of the material but may also cause nozzle clogging, further affecting the performance of the printed part. Utility Model Content

[0004] This invention addresses the aforementioned problem of fiber orientation and arrangement by designing an ultrasonic printing head for short fiber reinforced polymer composite materials.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An ultrasonic printhead suitable for short fiber reinforced polymer composites includes a housing, a melting chamber disposed in the middle of the housing cavity, two symmetrically arranged low-temperature rollers mounted on the inlet side of the housing cavity for feeding and withdrawing filaments, two symmetrically arranged high-temperature rollers disposed at the inlet of the melting chamber for heating and softening the filaments and transporting them into the melting chamber, and two symmetrically arranged extrusion rollers disposed at the outlet of the melting chamber for extruding and conveying the molten filaments to a nozzle. The low-temperature rollers, high-temperature rollers, and extrusion rollers are all mounted on the housing, and a nozzle is fixedly connected to the outlet end of the housing. An ultrasonic module is fixedly connected to the outside of the housing, and the position of the ultrasonic module is parallel to the melting chamber inside the housing.

[0007] Furthermore, the groove shape of the low-temperature roller is fitted to the filament.

[0008] Furthermore, the low-temperature roller, high-temperature roller, and extrusion roller are all made of high-strength, wear-resistant metal materials.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] This invention utilizes an ultrasonic module to heat and melt the filaments and stir the melt. Through its interaction with low-temperature rollers, high-temperature rollers, and extrusion rollers, it alters the orientation and arrangement of the fibers, thereby reducing the porosity of the additively manufactured short-fiber reinforced polymer composite material and improving its overall mechanical properties. Simultaneously, it can control the morphology of the fiber reinforcement, preventing fiber breakage during printing and solving the nozzle clogging problem during the printing process of short-fiber reinforced polymer composite materials. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This invention relates to the melt deposition molding process of the wire material.

[0013] In the figure: 1. Housing; 2. Ultrasonic module; 3. Nozzle; 4. Low temperature roller; 5. High temperature roller; 6. Melting chamber; 7. Extrusion roller; 8. Wire; 9. Wire spool; 10. Forming part; 11. Forming substrate. Detailed Implementation

[0014] To further illustrate the technical solution of this utility model, the following description is provided with reference to the accompanying drawings.

[0015] like Figure 1As shown, an ultrasonic printhead of short fiber reinforced polymer composite material is characterized by: including a housing 1, a melting chamber 6 disposed in the middle of the inner cavity of the housing 1, two mutually symmetrical low-temperature rollers 4 installed on the inlet side of the inner cavity of the housing 1, the low-temperature rollers 4 being used for feeding and withdrawing filament 8, two mutually symmetrical high-temperature rollers 5 disposed at the inlet of the melting chamber 6, the high-temperature rollers 5 being used for heating and softening the filament 8 and transporting the filament 8 into the interior of the melting chamber 6, and two... A series of symmetrical extrusion rollers 7 are used to extrude the molten wire 8 and convey it to the nozzle 3. The low-temperature roller 4, high-temperature roller 5 and extrusion roller 7 are all mounted on the housing 1. The nozzle 3 is fixedly connected to the outlet end of the housing 1. An ultrasonic module 2 is fixedly connected to the outside of the housing 1. The position of the ultrasonic module 2 is parallel to the melting chamber 6 inside the housing 1. The groove shape of the low-temperature roller 4 fits the wire 8. The low-temperature roller 4, high-temperature roller 5 and extrusion roller 7 are all made of high-strength wear-resistant metal material.

[0016] Book Figure 2 In the melt deposition molding process of the filament 8 of this utility model, the filament 8 is wound on the filament spool 9. The filament 8 passes through the shell 1 in sequence through the low temperature roller 4, the high temperature roller 5, the melting chamber 6, and the extrusion roller 7. The melt of the filament 8 is extruded and conveyed to the nozzle 3 under the action of the ultrasonic waves generated by the ultrasonic module 2 in the melting chamber 6. The nozzle 3 moves on the forming substrate 5 and extrudes the melt of the filament simultaneously. The final formed part 4 is obtained by layer-by-layer deposition and cooling.

[0017] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An ultrasonic printing head suitable for use in short fiber reinforced polymer composites, characterized by: The application relates to a shell (1) which is internally provided with a melting cabin (6) in the middle, two mutually symmetrical low-temperature rollers (4) are arranged at the inlet side of the shell (1) cavity, the low-temperature rollers (4) are used for feeding and withdrawing a wire (8), two mutually symmetrical high-temperature rollers (5) are arranged at the inlet of the melting cabin (6), the high-temperature rollers (5) are used for heating and softening the wire (8) and conveying the wire (8) to the inside of the melting cabin (6), two mutually symmetrical extrusion rollers (7) are arranged at the outlet of the melting cabin (6), the extrusion rollers (7) are used for extruding and conveying the melt of the wire (8) to a nozzle (3), the low-temperature rollers (4), the high-temperature rollers (5) and the extrusion rollers (7) are all arranged on the shell (1), the outlet end of the shell (1) is fixedly connected with the nozzle (3), an ultrasonic module (2) is fixedly connected to the outside of the shell (1), the position of the ultrasonic module (2) is parallel to the melting cabin (6) in the shell (1).

2. An ultrasonic printing head suitable for use in short fiber reinforced polymer composites according to claim 1, characterized in that: The recess shape of the low-temperature roller (4) is matched with the wire (8).

3. The ultrasonic printing head suitable for short fiber reinforced polymer composites according to claim 1, characterized in that: The material of the low-temperature roller (4), the high-temperature roller (5) and the extrusion roller (7) is high-strength wear-resistant metal material.

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