3D additive printing head

Abstract

The 3D additive printing head comprises a shell, a spray head is installed on one side of the bottom end face of the shell, a feeding port is formed in one side of the top end face of the shell, a protection assembly is arranged outside one end of the spray head, and the protection assembly comprises a protection piece arranged at an opening in one end of the spray head. Limiting plates are fixed to the edge of the top end face of the protection piece at equal angles, and a mounting ring is arranged outside one end of the spray head. According to the utility model, through the designed protection assembly, the end part of the spray head can be conveniently protected, so that a printing head is difficult to print after printing is finished, printing raw materials in the spray head do not drip, the situation that the raw materials are wasted is avoided, and the practicability is better; through the designed limiting assembly, a worker can conveniently add printing raw materials into the feeding port, the situation that the raw materials are scattered cannot occur in the raw material adding process, the worker can conveniently conduct printing operation, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a 3D additive printing head. Background Art

[0002] 3D printing is a type of rapid prototyping technology, also known as additive manufacturing. It is a technology that uses digital model files as the basis, uses powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing, industrial design, etc., and later gradually used for the direct manufacturing of some products. There are already parts printed using this technology. The 3D additive print head is an important component of 3D printing equipment. The existing 3D additive print head has a problem when in use. After printing, the printing raw materials may flow out from the inside of the nozzle, which may easily cause a waste of raw materials. There are limitations when using it, and there is room for improvement. Utility Model Content

[0003] The purpose of the utility model is to provide a 3D additive printing head to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a 3D additive printing head, comprising a shell, a nozzle is installed on one side of the bottom end surface of the shell, a feed port is arranged on one side of the top end surface of the shell, and a protective component is arranged on the outside of one end of the nozzle.

[0005] The protection component includes a protection sheet arranged at the opening of one end of the nozzle, a limiting plate is fixed at an equal angle at the edge of the top surface of the protection sheet, a mounting ring is arranged on the outside of one end of the nozzle, one end of the limiting plate is fixedly connected to the mounting ring, a connecting rod is arranged between the inner surface of each limiting plate and the outer surface of one end of the nozzle, a fixed magnetic ring is fixed on the top surface of one end of the nozzle, and a cross groove is opened in the middle of the surface of the protection sheet.

[0006] As a further preferred embodiment of the present technical solution, reinforcing ribs are installed at equal angles on the surface of the protective sheet, and the protective sheet is made of rubber material.

[0007] As a further preferred embodiment of the present technical solution, the inner diameter of the mounting ring is larger than the outer diameter of the middle portion of one end of the nozzle, and the mounting ring is made of metal.

[0008] As a further preferred embodiment of the present technical solution, each of the limit plates is arranged in an inclined shape, and both ends of the connecting rod are rotatably connected to the nozzle and the limit plate respectively.

[0009] As a further preferred embodiment of the technical solution, a limiting assembly is provided at the opening of the feed port, and the limiting assembly includes a limiting funnel arranged at the opening of the feed port, a fixing ring is installed on the adjacent edge surface of the opening of the feed port, a rubber ring is fixed on the top end surface of the fixing ring, and a connecting groove for the rubber ring to engage is provided on the outer surface of the limiting funnel, and the surface of the rubber ring is squeezed and fitted with the inner surface of the connecting groove.

[0010] As a further preferred embodiment of the present technical solution, the inner diameter of the end with the smaller opening of the limiting funnel is equal to the inner diameter of the opening of the feed port, and the inner walls of the openings at both ends of the rubber ring are inclined.

[0011] The utility model provides a 3D additive printing head, which has the following beneficial effects:

[0012] 1. The utility model is convenient for protecting the end of the nozzle through the designed protection component, so that the print head is not easy to fall after printing, and the printing raw materials inside the nozzle will not drip, avoiding the waste of raw materials, and has good practicality.

[0013] 2. The utility model is convenient for workers to add printing raw materials into the feed port through the designed limit assembly, and the raw materials will not be spilled during the process of adding, which is convenient for workers to perform printing operations and has a good practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation structure of the protection component in the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the protective sheet in the utility model;

[0017] Figure 4 This is a schematic diagram of the installation structure of the limit assembly in the utility model;

[0018] Figure 5 for Figure 4 A magnified schematic diagram of the middle A area;

[0019] In the figure: 1. Shell; 2. Nozzle; 3. Feed port; 4. Fixed magnetic ring; 5. Protective sheet; 6. Limit plate; 7. Connecting rod; 8. Mounting ring; 9. Cross groove; 10. Reinforcing rib; 11. Limiting funnel; 12. Fixed ring; 13. Rubber ring; 14. Connecting slot. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] The utility model provides a technical solution: Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, a 3D additive printing head includes a shell 1, a nozzle 2 is installed on one side of the bottom end surface of the shell 1, a feed port 3 is provided on one side of the top surface of the shell 1, a protective component is provided on the outside of one end of the nozzle 2, and the protective component includes a protective sheet 5 provided at the opening of one end of the nozzle 2, a limiting plate 6 is fixed at an equal angle at the edge of the top surface of the protective sheet 5, and reinforcing ribs 10 are installed on the surface of the protective sheet 5 at an equal angle. The protective sheet 5 is made of rubber material, and a mounting ring 8 is provided on the outside of one end of the nozzle 2. One end of the limiting plate 6 is fixedly connected to the mounting ring 8, and the inner diameter of the mounting ring 8 is 1. It is larger than the outer diameter of the middle part of one end of the nozzle 2, and the mounting ring 8 is made of metal. A connecting rod 7 is arranged between the inner surface of each limiting plate 6 and the outer surface of one end of the nozzle 2. Each limiting plate 6 is arranged in an inclined shape, and the two ends of the connecting rod 7 are rotatably connected to the nozzle 2 and the limiting plate 6 respectively. A fixed magnetic ring 4 is fixed on the top surface of one end of the nozzle 2, and a cross groove 9 is opened in the middle of the surface of the protective sheet 5, which is convenient for protecting the end of the nozzle 2, so that no raw materials will drip from the inside of the nozzle 2 after printing, thereby avoiding the waste of raw materials and having good practicality.

[0022] like Figure 4 and Figure 5 As shown, a limiting component is provided at the opening of the feed port 3, and the limiting component includes a limiting funnel 11 arranged at the opening of the feed port 3, a fixing ring 12 is installed on the adjacent surface of the opening of the feed port 3, a rubber ring 13 is fixed on the top surface of the fixing ring 12, a connecting groove 14 for the rubber ring 13 to engage is provided on the outer surface of the limiting funnel 11, the surface of the rubber ring 13 is squeezed and fitted with the inner surface of the connecting groove 14, the inner diameter of the end with the smaller opening of the limiting funnel 11 is equal to the inner diameter of the opening of the feed port 3, and the inner walls of the openings at both ends of the rubber ring 13 are inclined, which is convenient for workers to add raw materials to the inside of the feed port 3 through the limiting funnel 11, and it is not easy to spill during the process of adding raw materials, which is convenient to improve the work efficiency of workers and has a good practical effect.

[0023] The utility model provides a 3D additive printing head, and the specific working principle is as follows: after the printing is completed, in order to prevent the raw materials from dripping from the inside of the nozzle 2, the end of the nozzle 2 needs to be quickly protected. First, the mounting ring 8 is pushed to move outside one end of the nozzle 2. At this time, the surface of the mounting ring 8 will lose the magnetic connection with the bottom end surface of the fixed magnetic ring 4. At the same time, the connecting rod 7 will change its angle, so that the connecting rod 7 drives the limit plate 6 to move. At this time, the protective sheet 5 at the end of the multiple limit plates 6 outside one end of the nozzle 2 will move toward the opening at one end of the nozzle 2. At this time, the reinforcing ribs 10 on the surface of the protective sheet 5 will generate elastic force so that the protective sheet 5 can rebound and reset, and the cross groove 9 on the surface of the protective sheet 5 will be closed, so that the protective sheet 5 can achieve the purpose of protecting the end of the nozzle 2, avoiding the situation that the raw materials drip from the inside of the nozzle 2 after the printing of the print head is completed. The operation is convenient and quick, and the waste of raw materials is avoided. It is relatively practical. After the rubber ring 13 is released, the rubber ring 13 is pushed to move toward the top end of the fixing ring 12, so that the rubber ring 13 and the fixing ring 12 can be fixedly connected. Then, the limiting funnel 11 is pushed to move toward the opening of the feeding port 3, so that the smaller opening end of the limiting funnel 11 faces the opening of the feeding port 3, and then the limiting funnel 11 can be pushed further to make one end of the limiting funnel 11 engage with the inside of the fixing ring 12 until the rubber ring 13 is limited and engaged with the inside of the connecting groove 14. At the same time, one end surface of the limiting funnel 11 is tightly fitted with the surface of the opening of the feeding port 3, so that the limiting funnel 11 can be limitedly installed at the opening of the feeding port 3. When the workers add raw materials to the inside of the feeding port 3 in the later stage, they can add raw materials to the inside of the feeding port 3 through the limiting funnel 11. At this time, the raw materials will not be spilled, which is convenient for the workers to operate and has a good practical effect.

[0024] 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 3D additive printing head, comprising a housing (1), a nozzle (2) being mounted on one side of a bottom end surface of the housing (1), and a feed port (3) being arranged on one side of a top end surface of the housing (1), characterized in that: A protective component is disposed on the outside of one end of the spray head (2); The protection component comprises a protection sheet (5) arranged at an opening at one end of the nozzle (2); a limiting plate (6) is fixed at an equal angle at the edge of the top surface of the protection sheet (5); a mounting ring (8) is arranged outside one end of the nozzle (2); one end of the limiting plate (6) is fixedly connected to the mounting ring (8); a connecting rod (7) is arranged between the inner surface of each limiting plate (6) and the outer surface of one end of the nozzle (2); a fixed magnetic ring (4) is fixed to the top surface of one end of the nozzle (2); and a cross groove (9) is opened in the middle of the surface of the protection sheet (5).

2. A 3D additive printing head according to claim 1, characterized in that: The surface of the protective sheet (5) is provided with reinforcing ribs (10) at equal angles, and the protective sheet (5) is made of rubber material.

3. A 3D additive printing head according to claim 1, characterized in that: The inner diameter of the mounting ring (8) is larger than the outer diameter of the middle portion of one end of the nozzle (2), and the mounting ring (8) is made of metal.

4. A 3D additive printing head according to claim 1, characterized in that: Each of the limiting plates (6) is arranged in an inclined shape, and the two ends of the connecting rod (7) are rotatably connected to the spray head (2) and the limiting plate (6) respectively.

5. The 3D additive printing head according to claim 1, characterized in that: A limiting component is provided at the opening of the feed port (3), and the limiting component comprises a limiting funnel (11) provided at the opening of the feed port (3); a fixing ring (12) is installed on the surface adjacent to the opening of the feed port (3); a rubber ring (13) is fixed on the top surface of the fixing ring (12); a connecting groove (14) for the rubber ring (13) to engage is provided on the outer surface of the limiting funnel (11); and the surface of the rubber ring (13) is pressed and fitted with the inner surface of the connecting groove (14).

6. A 3D additive printing head according to claim 5, characterized in that: The inner diameter of the end with the smaller opening of the limiting funnel (11) is equal to the inner diameter of the opening of the feed port (3), and the inner walls of the openings at both ends of the rubber ring (13) are inclined.

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