Spray head structure for multi-material printing and 3D printing equipment

Abstract

The utility model discloses a spray head structure for multi-material printing and 3D printing equipment, belongs to the technical field of 3D printing, and aims to solve the problems of non-uniform discharge and lack of protective measures of a spray head caused by standing of printing raw materials, the spray head structure comprises a mounting plate, a stirring mechanism is arranged at the top of the mounting plate, and a conveying pipe is fixedly connected to the rear end of the stirring mechanism. The stirring mechanism is arranged, the driving motor is started to drive the stirring blades to rotate, and the electric heating wires are mounted in the stirring blades, so that raw materials are heated while being uniformly stirred, and the stirring efficiency is improved. The situation that raw materials are cooled and precipitated too early due to long-time standing is avoided, discharging uniformity is guaranteed, and the printing effect is improved; and meanwhile, the protection cover connected through magnetic attraction is arranged to protect the spray head, and dust is prevented from entering the spray head to cause blockage and raw materials are prevented from dripping to the printing table to cause pollution.

Description

Technical Field

[0001] The utility model belongs to the technical field of 3D printing, and in particular relates to a nozzle structure for multi-material printing and a 3D printing device. 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 and 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 then gradually used for the direct manufacturing of some products. There are already parts printed using this technology. This technology has a wide range of applications in the fields of jewelry, footwear, industrial design, architecture, engineering and construction.

[0003] A 3D printing device with a patent announcement number of CN218430000U in the prior art includes a main body, a printing table is provided on the upper part of the main body, a movable printing head is provided above the printing table, the printing head includes a throat, a nozzle, a heater, a heat insulation member and a radiator, the radiator is sleeved on the outside of the throat, the lower part of the throat is connected to the heat insulation member, the lower part of the heat insulation member is connected to the nozzle, the heater is fixed on the outside of the nozzle, and the nozzle is threadedly connected to the heat insulation member. The device separates the throat from the nozzle by arranging a heat insulation member, which can effectively reduce thermal conductivity and prevent material blockage; however, there are still the following deficiencies in actual use: from a practical point of view, before the 3D printer is prepared for printing, the raw materials to be printed need to be input into the device. Due to the long time of inputting the materials, the raw materials are easily cooled and precipitated prematurely, which will cause uneven discharge of the printing nozzle and even solid residue, which seriously affects the final effect of 3D printing; at the same time, when the printing is completed, the nozzle lacks a protective device, dust in the air can easily enter the nozzle and cause blockage, and the residual raw materials of the nozzle can easily drip onto the printing table and cause pollution.

[0004] Therefore, a nozzle structure and a 3D printing device for multi-material printing are needed to solve the problems existing in the prior art of uneven discharge of printing raw materials due to standing still and lack of protection measures for the nozzle. Utility Model Content

[0005] The purpose of the utility model is to provide a nozzle structure and a 3D printing device for multi-material printing, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a nozzle structure for multi-material printing and a 3D printing device, comprising a mounting plate, a stirring mechanism is arranged on the top of the mounting plate, a feed pipe is fixedly connected to the rear end of the stirring mechanism, cooling fans are fixedly connected to both sides of the top of the mounting plate, a discharge pipe is fixedly connected to the bottom of the mounting plate, a filter plate is detachably connected to the bottom of the discharge pipe, a nozzle is detachably connected to the bottom of the filter plate, a protective cover is detachably connected to the bottom of the filter plate, and two magnet columns are fixedly connected to the top of the protective cover.

[0007] It should be noted in the scheme that the stirring mechanism includes a storage barrel fixedly connected to the top of the mounting plate, the top of the storage barrel is fixedly connected to a drive motor, the output end of the drive motor is fixedly connected to a stirring shaft, and the outer wall of the stirring shaft is fixedly connected to multiple groups of evenly distributed stirring blades.

[0008] It is further worth mentioning that a plurality of the stirring blades are internally installed with heating wires.

[0009] It should be further explained that an electromagnetic boost valve is installed on one side of the discharge pipe.

[0010] As a preferred embodiment, the filter plate is connected to the discharge pipe and the nozzle by threads, and the interiors thereof are interconnected.

[0011] As a preferred embodiment, two iron grooves corresponding to the magnet columns are provided at the bottom of the filter plate.

[0012] As a preferred embodiment, a 3D printing device includes the above-mentioned nozzle structure for multi-material printing, the 3D printing device includes a device body, two auxiliary fixing mechanisms are arranged on both sides of the device body, a printing table is installed on the top of the device body, and a transverse movement component is installed on the top of the device body near the rear end.

[0013] As a preferred embodiment, the auxiliary fixing mechanism includes a support plate, the top of the support plate is rotatably connected to a threaded rod, the top of the threaded rod is fixedly connected to a turntable, and the bottom of the threaded rod is rotatably connected to a fixed suction cup.

[0014] As a preferred embodiment, a thread groove corresponding to the threaded rod is formed on the inner wall of the support plate.

[0015] Compared with the prior art, the nozzle structure and 3D printing device for multi-material printing provided by the utility model have at least the following beneficial effects:

[0016] (1) By setting up a stirring mechanism and turning on the driving motor to drive the stirring blade to rotate, an electric heating wire is installed inside the stirring blade, so that the raw materials are heated while being stirred evenly, avoiding premature cooling and precipitation of the raw materials due to long-term standing, ensuring uniform discharge of the materials and improving the printing effect; at the same time, a protective cover with a magnetic connection is set to protect the nozzle, preventing dust from entering the nozzle and causing blockage and raw materials from dripping onto the printing table and causing pollution.

[0017] (2) By setting up an auxiliary fixing mechanism, the rotating turntable drives the threaded rod to rotate, and the threaded rod drives the fixed suction cup to descend while rotating, so that multiple fixed suction cups are stably connected to the ground, so that the main body of the equipment is firmly fixed to the ground, avoiding the shaking of the main body of the equipment during the printing process, and improving the stability of the printing work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0019] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0020] Figure 3 It is a schematic diagram of the nozzle structure of the utility model;

[0021] Figure 4 This is a partial exploded view of the nozzle structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the stirring mechanism of the utility model;

[0023] Figure 6 It is a structural schematic diagram of the auxiliary fixing mechanism of the utility model.

[0024] In the figure: 1. Mounting plate; 2. Stirring mechanism; 201. Storage barrel; 202. Driving motor; 203. Stirring shaft; 204. Stirring blade; 3. Feed pipe; 4. Cooling fan; 5. Discharge pipe; 6. Filter plate; 7. Nozzle; 8. Protective cover; 9. Magnet column; 10. Equipment body; 11. Auxiliary fixing mechanism; 1101. Support plate; 1102. Threaded rod; 1103. Turntable; 1104. Fixed suction cup; 12. Printing table; 13. Transverse movement assembly. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the embodiments.

[0026] See also Figure 1-6The utility model provides a nozzle structure for multi-material printing and a 3D printing device, including a mounting plate 1, a stirring mechanism 2 is arranged on the top of the mounting plate 1, a feeding pipe 3 is fixedly connected to the rear end of the stirring mechanism 2, cooling fans 4 are fixedly connected to both sides of the top of the mounting plate 1, a discharge pipe 5 is fixedly connected to the bottom of the mounting plate 1, a filter plate 6 is detachably connected to the bottom of the discharge pipe 5, a nozzle 7 is detachably connected to the bottom of the filter plate 6, a protective cover 8 is detachably connected to the bottom of the filter plate 6, and two magnet columns 9 are fixedly connected to the top of the protective cover 8.

[0027] Further Figure 5 As shown, it is worth specifically explaining that the stirring mechanism 2 includes a storage barrel 201 fixedly connected to the top of the mounting plate 1, a driving motor 202 is fixedly connected to the top of the storage barrel 201, a stirring shaft 203 is fixedly connected to the output end of the driving motor 202, and a plurality of groups of evenly distributed stirring blades 204 are fixedly connected to the outer wall of the stirring shaft 203. By setting the stirring mechanism 2, the driving motor 202 drives the stirring blades 204 to rotate, thereby avoiding premature precipitation of raw materials due to long-term standing.

[0028] Further Figure 5 As shown, it is worth mentioning that electric heating wires are installed inside the multiple stirring blades 204, so that the raw materials are heated while being stirred evenly, thereby preventing the raw materials from cooling down.

[0029] Further Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that an electromagnetic booster valve is installed on one side of the discharge pipe 5 to provide power for the discharge of the raw materials from the nozzle 7 to ensure the printing work.

[0030] Further Figure 4 As shown, it is worth explaining in detail that the filter plate 6 is connected to the discharge pipe 5 and the nozzle 7 by threads, and the insides are interconnected. The threaded connection facilitates the installation and disassembly of the filter plate 6 and the nozzle 7 by the staff, thereby facilitating the timely cleaning of the filter plate 6 to prevent blockage during the printing process.

[0031] Further Figure 4 As shown, it is worth explaining in detail that two iron grooves corresponding to the magnet columns 9 are provided at the bottom of the filter plate 6, and the protective cover 8 connected by magnetic attraction protects the nozzle 7 to prevent dust from entering the nozzle 7 to cause blockage and raw materials from dripping onto the printing table 12 to cause pollution.

[0032] According to the above working process, it can be known that: by setting up the stirring mechanism 2, turning on the driving motor 202 to drive the stirring blade 204 to rotate, and installing an electric heating wire inside the stirring blade 204, the raw materials are stirred evenly while being heated, thereby avoiding premature cooling and precipitation of the raw materials due to long-term standing, ensuring uniform discharge of the material, and improving the printing effect; at the same time, a magnetically connected protective cover 8 is provided to protect the nozzle 7 to prevent dust from entering the nozzle 7 to cause blockage and raw materials from dripping onto the printing table to cause pollution.

[0033] Further as Figure 1 and Figure 2 As shown, it is worth specifically explaining that a 3D printing device includes the above-mentioned nozzle structure for multi-material printing, and the 3D printing device includes a device body 10, two auxiliary fixing mechanisms 11 are arranged on both sides of the device body 10, a printing table 12 is installed on the top of the device body 10, and a transverse movement component 13 is installed on the top of the device body 10 near the rear end.

[0034] Further as Figure 6 As shown, it is worth explaining in detail that the auxiliary fixing mechanism 11 includes a support plate 1101, the top of the support plate 1101 is rotatably connected to a threaded rod 1102, the top of the threaded rod 1102 is fixedly connected to a turntable 1103, and the bottom of the threaded rod 1102 is rotatably connected to a fixed suction cup 1104. By setting the auxiliary fixing mechanism 11, the device body 10 is firmly fixed to the ground, avoiding shaking of the device body 10 during printing, thereby improving the stability of the printing work.

[0035] Further as Figure 6 As shown, it is worth explaining in detail that a thread groove corresponding to the threaded rod 1102 is opened on the inner wall of the support plate 1101, and the thread groove cooperates with the threaded rod 1102 to ensure that the threaded rod 1102 can drive the fixed suction cup 1104 to rise and fall while rotating.

[0036] This solution has the following working process: in actual use, rotating the turntable 1103 drives the threaded rod 1102 to rotate, and the threaded rod 1102 drives the fixed suction cup 1104 to descend while rotating, so that multiple fixed suction cups 1104 are stably connected to the ground, so that the equipment body 10 is firmly fixed to the ground, and the raw materials enter the storage barrel from the feed pipe 3, and the drive motor 202 is turned on to drive the stirring blade 204 to rotate. A heating wire is installed inside the stirring blade 204, so that the raw materials are heated while being stirred evenly, and then the pressurized solenoid valve is opened to allow the raw materials to be ejected from the nozzle 7 for printing.

[0037] In summary: by setting up the stirring mechanism 2, turning on the driving motor 202 to drive the stirring blade 204 to rotate, and installing an electric heating wire inside the stirring blade 204, the raw materials are heated while being stirred evenly, avoiding premature cooling and precipitation of the raw materials due to long-term standing, thereby ensuring uniform discharge and improving printing effect; at the same time, a magnetically connected protective cover 8 is provided to protect the nozzle 7 to avoid dust entering the nozzle 7 to cause blockage and raw materials dripping onto the printing table to cause pollution; by providing an auxiliary fixing mechanism 11, the device body 10 is firmly fixed to the ground to avoid shaking of the device body 10 during printing, thereby improving the stability of printing work.

Claims

1. A nozzle structure for multi-material printing, comprising a mounting plate (1), characterized in that: The top of the mounting plate (1) is provided with a stirring mechanism (2), the rear end of the stirring mechanism (2) is fixedly connected to a feeding pipe (3), both sides of the top of the mounting plate (1) are fixedly connected to cooling fans (4), the bottom of the mounting plate (1) is fixedly connected to a discharge pipe (5), the bottom of the discharge pipe (5) is detachably connected to a filter plate (6), the bottom of the filter plate (6) is detachably connected to a nozzle (7), the bottom of the filter plate (6) is detachably connected to a protective cover (8), and the top of the protective cover (8) is fixedly connected to two magnet columns (9).

2. The nozzle structure for multi-material printing according to claim 1, characterized in that: The stirring mechanism (2) comprises a material storage barrel (201) fixedly connected to the top of the mounting plate (1); a driving motor (202) is fixedly connected to the top of the material storage barrel (201); a stirring shaft (203) is fixedly connected to the output end of the driving motor (202); and a plurality of groups of evenly distributed stirring blades (204) are fixedly connected to the outer wall of the stirring shaft (203).

3. The nozzle structure for multi-material printing according to claim 2, characterized in that: A plurality of the stirring blades (204) are each equipped with a heating wire.

4. The nozzle structure for multi-material printing according to claim 1, characterized in that: An electromagnetic booster valve is installed on one side of the discharge pipe (5).

5. The nozzle structure for multi-material printing according to claim 1, characterized in that: The filter plate (6) is connected to the discharge pipe (5) and the nozzle (7) by threads, and the insides are interconnected.

6. The nozzle structure for multi-material printing according to claim 1, characterized in that: The bottom of the filter plate (6) is provided with two iron grooves corresponding to the magnet columns (9).

7. A 3D printing device, comprising a nozzle structure for multi-material printing according to any one of claims 1 to 6, characterized in that: The 3D printing device comprises a device body (10), two auxiliary fixing mechanisms (11) are arranged on both sides of the device body (10), a printing table (12) is installed on the top of the device body (10), and a transverse movement component (13) is installed near the rear end of the top of the device body (10).

8. The 3D printing device according to claim 7, characterized in that: The auxiliary fixing mechanism (11) comprises a support plate (1101), the top of the support plate (1101) is rotatably connected to a threaded rod (1102), the top of the threaded rod (1102) is fixedly connected to a rotating disk (1103), and the bottom of the threaded rod (1102) is rotatably connected to a fixed suction cup (1104).

9. The 3D printing device according to claim 8, characterized in that: The inner wall of the support plate (1101) is provided with a thread groove corresponding to the threaded rod (1102).

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