Material conveying and spraying device for iron-based powder 3D printing

Abstract

The utility model discloses a material conveying and spraying device for iron-based powder 3D printing, and relates to the technical field of material conveying and spraying device structures for 3D printing, the material conveying and spraying device comprises a conveying and spraying assembly installed in a printer, and a grinding assembly comprises a grinding barrel, a filter screen and a grinding rod. Through the arrangement of the grinding assembly, when the 3D printer is used for printing, the conveying and spraying assembly in the printer conveys materials formed by mixing iron-based powder and other materials into the conveying pipe, then the materials are conveyed into the grinding barrel from the bottom of the conveying pipe, the materials can fall on the top of the filter screen after entering the grinding barrel, and the grinding rod rotates; the bottom of the outer wall of the grinding rod is attached to the top of the outer wall of the filter screen, materials are ground, caked materials are scattered, and therefore the problem that the production efficiency is affected due to blockage caused by the fact that the caked materials are easily input into a spray head when a traditional material conveying and spraying device conveys materials is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of the structure of a feeding and spraying device for 3D printing, in particular to a feeding and spraying device for 3D printing of iron-based powder. Background Art

[0002] 3D printing, which is a kind of rapid prototyping technology, is a technology that constructs an object by layer-by-layer printing based on a digital model file, using powdery metals, plastics and other bondable materials. It sprays materials through a feeding and spraying device, and is divided into different types according to different materials.

[0003] Among the types of 3D printing, there is a 3D printing device that uses iron-based powder materials. When in use, the iron-based powder needs to be placed inside a storage tank, and then the iron-based powder is conveyed into a printing nozzle through a feeding and spraying device to complete printing. When printing with iron-based powder, it needs to be mixed with other materials, and the mixed materials will agglomerate in part, so the nozzle will be blocked, affecting production efficiency. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a feeding and spraying device for 3D printing of iron-based powder in order to solve the problem that the traditional feeding and spraying device is easy to input agglomerated materials into the nozzle during feeding, resulting in blockage and affecting production efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A feeding and spraying device for 3D printing of iron-based powder, including a feeding and spraying assembly installed inside a printer. The feeding and spraying assembly includes a conveying pipe and a nozzle. The nozzle is arranged at the bottom of one end of the conveying pipe. A grinding assembly is arranged at the bottom of the outer wall of the conveying pipe. The grinding assembly includes a grinding barrel, a filter screen and a grinding rod.

[0006] The grinding barrel is fixedly connected to the bottom of the outer wall of the conveying pipe and is communicated with the conveying pipe. The bottom of the outer wall of the grinding barrel is fixedly connected to the top of the outer wall of the nozzle and is communicated with the nozzle. A plurality of filter screens are arranged. The plurality of filter screens are fixedly connected to the inner wall of the grinding barrel in a circumferential arrangement. The grinding rod is arranged inside the grinding barrel. The outer wall of the grinding rod is rotatably connected to the inner wall of the grinding barrel. The bottom of the outer wall of the grinding rod is in contact with the top of the outer wall of the filter screen.

[0007] As a further scheme of the utility model: The grinding assembly further includes a cross bracket.

[0008] The cross bracket is fixedly connected to the inner wall of the grinding barrel. A round hole is arranged at the top of the outer wall of the cross bracket, and the round hole completely penetrates to the bottom of the outer wall of the cross bracket. The filter screen is fixedly connected to the outer wall of the cross bracket, and the top of the outer wall of the filter screen is flush with the top of the outer wall of the cross bracket.

[0009] As a further solution of the present utility model: The grinding assembly further includes a motor;

[0010] The motor is fixedly connected to the bottom of the outer wall of the cross-shaped bracket, the output end of the motor is rotatably connected to the inner wall of the round hole, and the top of the outer wall of the output end of the motor is flush with the top of the outer wall of the cross-shaped bracket.

[0011] As a further solution of the present utility model: The bottom of the outer wall of the grinding rod is arc-shaped, and the bottom of the outer wall of the grinding rod is fixedly connected to the top of the outer wall of the output end of the motor. By providing the grinding rod and cooperating with the filter screen, the material is ground.

[0012] As a further solution of the present utility model: The top of the outer wall of the grinding barrel is provided with a through hole, the through hole completely penetrates to the bottom of the outer wall of the grinding barrel, and the conveying pipe and the spray head are respectively communicated with the inside of the grinding barrel through the through hole.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] By providing the grinding assembly, when using a 3D printer for printing, the material mixture of iron-based powder and other materials inside the printer is conveyed into the conveying pipe by the spraying and conveying assembly, and then input into the grinding barrel from the bottom of the conveying pipe. After the material enters the grinding barrel, it will fall on the top of the filter screen. The grinding rod rotates, and through the fitting of the bottom of the outer wall of the grinding rod and the top of the outer wall of the filter screen, the material is ground to break up the agglomerated material, thereby solving the problem that the traditional feeding and spraying device is prone to input the agglomerated material into the spray head during feeding, resulting in blockage and affecting the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the present utility model;

[0016] Figure 2 It is a top view schematic diagram of the spraying and conveying assembly of the present utility model;

[0017] Figure 3 It is a vertical cross-sectional schematic diagram of the grinding barrel of the present utility model;

[0018] Figure 4 It is a disassembled schematic diagram of the grinding assembly of the present utility model.

[0019] In the figure: 1. Spraying and conveying assembly; 101. Conveying pipe; 102. Spray head; 2. Grinding assembly; 201. Grinding barrel; 202. Cross-shaped bracket; 203. Filter screen; 204. Motor; 205. Grinding rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] Please refer to Figures 1 to 4 , in the embodiments of the present invention, a feeding and spraying device for iron-based powder 3D printing includes a feeding and spraying assembly 1 installed inside the printer. The feeding and spraying assembly 1 includes a conveying pipe 101 and a nozzle 102. The nozzle 102 is arranged at the bottom of one end of the conveying pipe 101. A grinding assembly 2 is arranged at the bottom of the outer wall of the conveying pipe 101. The grinding assembly 2 includes a grinding barrel 201, a filter screen 203, and a grinding rod 205.

[0022] The grinding barrel 201 is fixedly connected to the bottom of the outer wall of the conveying pipe 101 and is communicated with the conveying pipe 101. The bottom of the outer wall of the grinding barrel 201 is fixedly connected to the top of the outer wall of the nozzle 102 and is communicated with the nozzle 102. A plurality of filter screens 203 are arranged. The plurality of filter screens 203 are fixedly connected to the inner wall of the grinding barrel 201 in a circumferential arrangement. The grinding rod 205 is arranged inside the grinding barrel 201. The outer wall of the grinding rod 205 is rotatably connected to the inner wall of the grinding barrel 201. The bottom of the outer wall of the grinding rod 205 is in contact with the top of the outer wall of the filter screen 203.

[0023] In this embodiment: When using a 3D printer for printing, the feeding and spraying assembly 1 inside the printer conveys the material after mixing iron-based powder and other materials into the conveying pipe 101, and then inputs it into the grinding barrel 201 from the bottom of the conveying pipe 101. After the material enters the grinding barrel 201, it will fall on the top of the filter screen 203. The grinding rod 205 rotates, and through the contact between the bottom of the outer wall of the grinding rod 205 and the top of the outer wall of the filter screen 203, the material is ground, so as to realize the dispersion of the agglomerated material through the grinding assembly 2, thereby solving the problem that the traditional feeding and spraying device is easy to input the agglomerated material into the nozzle 102 during feeding, resulting in blockage and affecting the production efficiency.

[0024] Please pay special attention to Figure 3 、 Figure 4 , the grinding assembly 2 further includes a cross bracket 202;

[0025] The cross bracket 202 is fixedly connected to the inner wall of the grinding barrel 201. A round hole is arranged at the top of the outer wall of the cross bracket 202. The round hole completely penetrates to the bottom of the outer wall of the cross bracket 202. The filter screen 203 is fixedly connected to the outer wall of the cross bracket 202. The top of the outer wall of the filter screen 203 is flush with the top of the outer wall of the cross bracket 202.

[0026] In this embodiment: The cross-shaped bracket 202 is fixedly connected to the inner wall of the grinding barrel 201. A round hole is provided at the top of the outer wall of the cross-shaped bracket 202, and the round hole completely penetrates to the bottom of the outer wall of the cross-shaped bracket 202. The filter screen 203 is fixedly connected to the outer wall of the cross-shaped bracket 202, providing a basis for the fixation of the filter screen 203 and the rotation of the grinding rod 205.

[0027] Please refer specifically to Figure 3 , Figure 4 , the grinding assembly 2 further includes a motor 204;

[0028] The motor 204 is fixedly connected to the bottom of the outer wall of the cross-shaped bracket 202. The output end of the motor 204 is rotationally connected to the inner wall of the round hole, and the top of the outer wall of the output end of the motor 204 is flush with the top of the outer wall of the cross-shaped bracket 202.

[0029] In this embodiment: By setting the motor 204, and the output end of the motor 204 is rotationally connected to the inner wall of the round hole, and the top of the outer wall of the output end of the motor 204 is flush with the top of the outer wall of the cross-shaped bracket 202, a basis for the rotation of the grinding rod 205 is provided, thereby realizing the grinding function of the material.

[0030] Please refer specifically to Figures 2 to 4 , the bottom of the outer wall of the grinding rod 205 is arc-shaped. The bottom of the outer wall of the grinding rod 205 is fixedly connected to the top of the outer wall of the output end of the motor 204. By setting the grinding rod 205 and cooperating with the filter screen 203, the material is ground.

[0031] In this embodiment: The bottom of the outer wall of the grinding rod 205 is arc-shaped, so that the grinding rod 205 cooperates with the filter screen 203 to grind the material. When the grinding rod 205 rotates, the material can enter between the grinding rod 205 and the filter screen 203 through the arc of the outer wall of the grinding rod 205 for grinding.

[0032] Please refer specifically to Figures 2 to 4 , a through hole is provided at the top of the outer wall of the grinding barrel 201, and the through hole completely penetrates to the bottom of the outer wall of the grinding barrel 201. The conveying pipe 101 and the spray head 102 are respectively connected to the inside of the grinding barrel 201 through the through hole.

[0033] In this embodiment: By providing a through hole at the top of the outer wall of the grinding barrel 201, the conveying pipe 101 and the spray head 102 are respectively connected to the inside of the grinding barrel 201 through the through hole, thereby realizing the transportation and spraying and printing of the material.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A feed injection device for iron-based powder 3D printing, comprising a feed injection assembly (1) installed inside a printer, wherein the feed injection assembly (1) comprises a delivery pipe (101) and a nozzle (102), wherein the nozzle (102) is arranged at the bottom of one end of the delivery pipe (101), and wherein: A grinding assembly (2) is provided at the bottom of the outer wall of the delivery pipe (101), and the grinding assembly (2) comprises a grinding barrel (201), a filter screen (203), and a grinding rod (205); The grinding barrel (201) is fixedly connected to the bottom of the outer wall of the delivery pipe (101) and is in communication with the delivery pipe (101); the bottom of the outer wall of the grinding barrel (201) is fixedly connected to the top of the outer wall of the nozzle (102) and is in communication with the nozzle (102); a plurality of filter screens (203) are provided, and the plurality of filter screens (203) are arranged in a circle and fixedly connected to the inner wall of the grinding barrel (201); the grinding rod (205) is provided inside the grinding barrel (201); the outer wall of the grinding rod (205) is rotatably connected to the inner wall of the grinding barrel (201); the bottom of the outer wall of the grinding rod (205) is in contact with the top of the outer wall of the filter screen (203).

2. The feed injection device for iron-based powder 3D printing according to claim 1, characterized in that: The grinding assembly (2) further comprises a cross bracket (202); The cross bracket (202) is fixedly connected to the inner wall of the grinding barrel (201); a circular hole is provided at the top of the outer wall of the cross bracket (202); the circular hole completely penetrates to the bottom of the outer wall of the cross bracket (202); the filter screen (203) is fixedly connected to the outer wall of the cross bracket (202); the top of the outer wall of the filter screen (203) is flush with the top of the outer wall of the cross bracket (202).

3. The feed injection device for iron-based powder 3D printing according to claim 2, characterized in that: The grinding assembly (2) further comprises a motor (204); The motor (204) is fixedly connected to the bottom of the outer wall of the cross bracket (202), the output end of the motor (204) is rotatably connected to the inner wall of the circular hole, and the top of the outer wall of the output end of the motor (204) is flush with the top of the outer wall of the cross bracket (202).

4. The feed injection device for iron-based powder 3D printing according to claim 3, characterized in that: The bottom of the outer wall of the grinding rod (205) is arc-shaped, and the bottom of the outer wall of the grinding rod (205) is fixedly connected to the top of the outer wall of the output end of the motor (204). The grinding rod (205) is arranged and cooperates with the filter screen (203) to grind the material.

5. The feed injection device for iron-based powder 3D printing according to claim 1, characterized in that: A through hole is provided at the top of the outer wall of the grinding barrel (201), and the through hole completely penetrates to the bottom of the outer wall of the grinding barrel (201), and the delivery pipe (101) and the nozzle (102) are respectively connected to the interior of the grinding barrel (201) through the through hole.

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