A mixing device for 3D printing

Abstract

The utility model discloses a mixing device for 3D printing, which belongs to the technical field of 3D printing and comprises a stirring tank installed in a 3D printer, wherein the inner cavity of the stirring tank is provided with a first fixed cylinder for conveying different raw materials, the bottom of the first fixed cylinder is connected with a second fixed cylinder, the second fixed cylinder is fixed to the bottom of the inner cavity of the stirring tank, the inner cavities of the first fixed cylinder and the second fixed cylinder are both rotatably connected with a rotating shaft through a bearing, the utility model can not only convey the raw materials through the first fixed cylinder and the second fixed cylinder, but also pre-mix and stir different raw materials during the conveying process, discharge them into the stirring tank through a discharge trough and a discharge hole, and then utilize different stirring components on the rotating first stirring shaft and the second stirring shaft to stir and mix the raw materials, the different stirring components play the role of conveying, flipping and breaking up, and more quickly promote the uniform mixing of the raw materials.

Description

Technical Field

[0001] The utility model relates to the technical field of 3D printing, in particular to a material mixing device for 3D printing. Background Art

[0002] 3D printing is usually achieved by 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 direct manufacturing of some products. There are already parts printed using this technology.

[0003] In the prior art, the Chinese utility model with publication number: CN220517231U discloses a raw material premixing device for 3D printing, including a stirring tank, a mounting plate is provided on the inner wall of the stirring tank and at the upper end, a bracket is provided on the upper end surface of the mounting plate, a first motor is provided on the upper end surface of the bracket, an output end of the first motor passes through the bracket and is provided with a first stirring shaft, a transmission pulley is provided at one end of the first stirring shaft, two groups of transmission pulleys are provided and are symmetrically arranged in the upper and lower directions, a second stirring shaft is rotatably provided on the upper end surface of the mounting plate and located on both sides, a driven pulley is provided at one end of the second stirring shaft, and a belt is provided on the transmission pulley and the driven pulley, so that the user can turn on the first motor to make the first stirring shaft drive the transmission pulley to rotate, and then the transmission pulley drives the driven pulley and the second stirring shaft to rotate through the belt, and finally drives the three groups of stirring blades to rotate, so as to achieve the effect of premixing the raw materials.

[0004] In the above technical solution, the first motor drives the two sets of second stirring shafts to rotate, so as to stir the raw materials inside the stirring tank, and at the same time, the stirring tank is shaken left and right to increase the fluidity of the raw materials. Since different raw materials are added into the stirring tank in groups, it takes time for different raw materials to disperse. At the same time, the mixing of solid raw materials and liquid raw materials requires that the solid raw materials are evenly dispersed in the liquid, which requires tumbling and stirring between the raw materials. This structure uses stirring blades to quickly turn over various piled raw materials up and down to form a uniform mixture. Utility Model Content

[0005] The purpose of the utility model is to provide a mixing device for 3D printing, which conveys different raw materials through a first fixed cylinder and a spiral blade, then crushes large particles during the conveying process, and then conveys the different raw materials to a second fixed cylinder for pre-mixing, so that the different raw materials are stirred with each other, and then discharged from a discharge trough and a discharge hole, and are dispersed again into the solvent by the stirring members on the first stirring shaft and the second stirring shaft, so as to ensure that the 3D printing raw materials are mixed evenly, 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 mixing device for 3D printing, comprising a stirring tank installed in a 3D printer, the inner cavity of the stirring tank is provided with a first fixed cylinder for conveying different raw materials, the bottom of the first fixed cylinder is connected to the second fixed cylinder, the second fixed cylinder is fixed to the bottom of the inner cavity of the stirring tank, the inner cavities of the first fixed cylinder and the second fixed cylinder are both rotatably connected to a rotating shaft through a bearing, the outer side of the rotating shaft is fixed with a spiral blade, the spiral blade is respectively attached to the inner wall of the first fixed cylinder and the second fixed cylinder, the front end and the rear end of the inner cavity of the stirring tank are respectively rotatably connected to the first stirring shaft and the second stirring shaft through a bearing, the outer sides of the first stirring shaft and the second stirring shaft are fixed with stirring members, the bottom of the stirring tank is fixed with a box body, and a driving adjustment component is arranged inside the box body.

[0007] Preferably, one end of the first fixed cylinder passes through the outside of the stirring tank and is fixed with a first drive motor, the output shaft of the first drive motor passes through the inner cavity of the first fixed cylinder and is fixedly connected to one end of the rotating shaft, a second drive motor is fixed to the bottom of the box body, one end of the rotating shaft in the inner cavity of the second fixed cylinder passes through the inner cavity of the box body and is fixedly connected to the output shaft of the second drive motor.

[0008] Preferably, the drive adjustment assembly includes a double-row drive pulley fixed to the outside of the rotating shaft, one end of the first stirring shaft and the second stirring shaft penetrates into the inner cavity of the box and is fixed with a single-row driven pulley, and the surface of the double-row drive pulley and the single-row driven pulley are connected by a transmission belt.

[0009] Preferably, it also includes a plurality of groups of feed hoppers arranged on the top of the stirring tank, and the feed hoppers are connected to the first fixed cylinder through a pipeline.

[0010] Preferably, a discharge groove is provided at the lower end of the outer surface of the second fixed cylinder, and a plurality of discharge holes are provided in sequence on the surface of the second fixed cylinder from top to bottom.

[0011] Preferably, the stirring member includes a spiral stirring blade, a stirring plate and a dispersion rack, the spiral stirring blade is fixed to the outside of the first stirring shaft, the stirring plate and the dispersion rack are fixed to the outside of the second stirring shaft, the discharge hole is flush with the dispersion rack, and the discharge trough and the discharge hole are respectively opposite to the first stirring shaft and the second stirring shaft.

[0012] Preferably, the bottom of the stirring tank is connected to a discharge pipe, and a one-way valve is installed on the discharge pipe.

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

[0014] 1. The utility model can not only transport the raw materials through the first fixed cylinder and the second fixed cylinder, but also pre-mix and stir different raw materials during the transportation process, and then discharge them into the mixing tank through the discharge trough and the discharge hole, and then use different stirring members on the rotating first stirring shaft and the second stirring shaft to stir and mix the raw materials. The different stirring members play the role of conveying, flipping and breaking up, which promotes the uniform mixing of the raw materials more quickly.

[0015] 2. The utility model limits the positions of the discharge trough and the discharge hole, so that the spiral stirring blades, the stirring plate and the dispersion rack can intervene in the raw materials in different ways, thereby ensuring that the raw materials are evenly mixed inside the solvent. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional three-dimensional structure of the stirring tank of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional three-dimensional structure of the first fixed cylinder and the second fixed cylinder of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the driving and adjusting component of the utility model.

[0020] Numbers in the figure: 1. stirring tank; 2. first fixed cylinder; 3. second fixed cylinder; 4. rotating shaft; 5. spiral blade; 6. first stirring shaft; 7. second stirring shaft; 8. stirring member; 81. spiral stirring blade; 82. stirring plate; 83. dispersion rack; 9. drive adjustment component; 91. double-row driving pulley; 92. single-row driven pulley; 93. transmission belt; 10. box body; 11. first driving motor; 12. second driving motor; 13. discharge funnel; 14. discharge trough; 15. discharge hole; 16. discharge pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figures 1 to 4A mixing device for 3D printing shown in the figure comprises a stirring tank 1 installed in a 3D printer, the inner cavity of the stirring tank 1 is provided with a first fixed cylinder 2 for conveying different raw materials, the bottom of the first fixed cylinder 2 is connected to a second fixed cylinder 3, the second fixed cylinder 3 is fixed to the bottom of the inner cavity of the stirring tank 1, the inner cavities of the first fixed cylinder 2 and the second fixed cylinder 3 are both rotatably connected to a rotating shaft 4 through bearings, the outer side of the rotating shaft 4 is fixed with a spiral blade 5, the spiral blade 5 is respectively attached to the inner wall of the first fixed cylinder 2 and the second fixed cylinder 3, the front end and the rear end of the inner cavity of the stirring tank 1 are respectively rotatably connected to a first stirring shaft 6 and a second stirring shaft 7 through bearings, the outer sides of the first stirring shaft 6 and the second stirring shaft 7 are fixed with a stirring member 8, the bottom of the stirring tank 1 is fixed with a box 10, and the interior of the box 10 is provided with a driving adjustment component 9;

[0023] The first fixed cylinder 2 and the second fixed cylinder 3 can not only transport the raw materials, but also pre-mix and stir the different raw materials during the transport process, and then discharge them into the stirring tank 1 through the discharge trough 14 and the discharge hole 15, and then use the different stirring members 8 on the rotating first stirring shaft 6 and the second stirring shaft 7 to stir and mix the raw materials. The different stirring members 8 play the role of transporting, flipping and breaking up, which promotes the uniform mixing of the raw materials more quickly.

[0024] One end of the first fixed cylinder 2 passes through the outside of the mixing tank 1 and is fixed with a first drive motor 11. The output shaft of the first drive motor 11 passes through the inner cavity of the first fixed cylinder 2 and is fixedly connected to one end of the rotating shaft 4. A second drive motor 12 is fixed to the bottom of the box body 10. One end of the rotating shaft 4 in the inner cavity of the second fixed cylinder 3 passes through the inner cavity of the box body 10 and is fixedly connected to the output shaft of the second drive motor 12. The rotating shafts 4 in the first fixed cylinder 2 and the second fixed cylinder 3 are driven respectively by the first drive motor 11 and the second drive motor 12, thereby driving the spiral blades 5 to rotate, thereby facilitating the transportation of raw materials.

[0025] The driving and adjusting component 9 includes a double-row driving pulley 91 fixed to the outside of the rotating shaft 4. One end of the first stirring shaft 6 and the second stirring shaft 7 passes through the inner cavity of the box body 10 and is fixed with a single-row driven pulley 92. The surfaces of the double-row driving pulley 91 and the single-row driven pulley 92 are connected by a transmission belt 93. The double-row driving pulley 91 is driven to rotate by the second driving motor 12, and the transmission belt 93 is used to drive the single-row driven pulley 92 to rotate to drive the first stirring shaft 6 and the second stirring shaft 7, and the stirring member 8 is used to process the raw materials.

[0026] It also includes multiple groups of feeding funnels 13 arranged on the top of the mixing tank 1. The feeding funnels 13 are connected to the first fixed cylinder 2 through a pipeline. Through the setting of the feeding funnels 13, different raw materials can be conveniently transported to the inside of the mixing tank 1 through the first fixed cylinder 2 and the second fixed cylinder 3.

[0027] A discharge groove 14 is provided at the lower end of the outer surface of the second fixed cylinder 3, and a plurality of discharge holes 15 are provided on the surface of the second fixed cylinder 3 from top to bottom. The arrangement of the discharge groove 14 and the discharge holes 15 facilitates the diffusion of the raw materials inside the second fixed cylinder 3 from different positions into the mixing tank 1.

[0028] The stirring member 8 includes a spiral stirring blade 81, a stirring plate 82 and a dispersion rack 83. The spiral stirring blade 81 is fixed to the outside of the first stirring shaft 6, the stirring plate 82 and the dispersion rack 83 are fixed to the outside of the second stirring shaft 7, the discharge hole 15 is flush with the dispersion rack 83, and the discharge trough 14 and the discharge hole 15 are respectively opposite to the first stirring shaft 6 and the second stirring shaft 7. By limiting the positions of the discharge trough 14 and the discharge hole 15, it is convenient for the spiral stirring blade 81, the stirring plate 82 and the dispersion rack 83 to perform different interventions on the raw materials, thereby ensuring that the raw materials are evenly mixed inside the solvent.

[0029] The bottom of the mixing tank 1 is connected to a discharge pipe 16 , on which a one-way valve is installed. The discharge pipe 16 and the one-way valve facilitate the discharge of the mixed raw materials from the mixing tank 1 .

[0030] During specific use, the first drive motor 11 and the second drive motor 12 are started, and then different raw materials are introduced into the first fixed cylinder 2 through the discharge funnel 13. The first drive motor 11 and the second drive motor 12 respectively drive the rotating shaft 4 and the spiral blade 5 inside the first fixed cylinder 2 and the second fixed cylinder 3 to rotate, so as to transport the raw materials, and then introduce them into the stirring tank 1 from the discharge trough 14 and the discharge hole 15. Then, the second drive motor 12 drives the double-row driving pulley 91 to rotate through the rotating shaft 4, and then drives the single-row driven pulley 92 to rotate through the transmission belt 93 to drive the first stirring shaft 6 and the second stirring shaft 7. The first stirring shaft 6 drives the spiral stirring blade 81 to rotate, and transports the raw materials discharged from the discharge trough 14 upward, forming a circulation in the stirring tank 1. The second stirring shaft 7 drives the stirring plate 82 and the dispersion frame 83 to stir and disperse the raw materials discharged from the discharge hole 15, so that the raw materials are evenly dispersed into the solvent.

[0031] 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 material mixing device for 3D printing, comprising a mixing tank (1) installed in a 3D printer, characterized in that: The inner cavity of the stirring tank (1) is provided with a first fixed cylinder (2) for conveying different raw materials, the bottom of the first fixed cylinder (2) is connected to a second fixed cylinder (3), the second fixed cylinder (3) is fixed to the bottom of the inner cavity of the stirring tank (1), the inner cavities of the first fixed cylinder (2) and the second fixed cylinder (3) are both rotatably connected to a rotating shaft (4) via a bearing, the outer side of the rotating shaft (4) is fixed with a spiral blade (5), the spiral blade (5) is respectively attached to the inner wall of the first fixed cylinder (2) and the second fixed cylinder (3), the front end and the rear end of the inner cavity of the stirring tank (1) are respectively rotatably connected to a first stirring shaft (6) and a second stirring shaft (7) via a bearing, the outer sides of the first stirring shaft (6) and the second stirring shaft (7) are fixed with a stirring member (8), the bottom of the stirring tank (1) is fixed with a box (10), and the inside of the box (10) is provided with a driving adjustment component (9).

2. A material mixing device for 3D printing according to claim 1, characterized in that: One end of the first fixed cylinder (2) passes through the outside of the stirring tank (1) and is fixed with a first drive motor (11); the output shaft of the first drive motor (11) passes through the inner cavity of the first fixed cylinder (2) and is fixedly connected to one end of the rotating shaft (4); a second drive motor (12) is fixed to the bottom of the box body (10); one end of the rotating shaft (4) in the inner cavity of the second fixed cylinder (3) passes through the inner cavity of the box body (10) and is fixedly connected to the output shaft of the second drive motor (12).

3. A material mixing device for 3D printing according to claim 1, characterized in that: The drive adjustment assembly (9) comprises a double-row drive pulley (91) fixed to the outside of the rotating shaft (4); one end of the first stirring shaft (6) and the second stirring shaft (7) penetrates into the inner cavity of the box body (10) and is fixed with a single-row driven pulley (92); and a transmission belt (93) is connected to the surface of the double-row drive pulley (91) and the single-row driven pulley (92) for transmission.

4. A material mixing device for 3D printing according to claim 1, characterized in that: It also includes a plurality of groups of material discharge funnels (13) arranged on the top of the stirring tank (1), wherein the material discharge funnels (13) are connected to the first fixed cylinder (2) through a pipeline.

5. A material mixing device for 3D printing according to claim 1, characterized in that: A discharge groove (14) is provided at the lower end of the outer surface of the second fixed cylinder (3), and a plurality of groups of discharge holes (15) are provided in sequence from top to bottom on the surface of the second fixed cylinder (3).

6. A material mixing device for 3D printing according to claim 5, characterized in that: The stirring member (8) comprises a spiral stirring blade (81), a stirring plate (82) and a dispersion frame (83); the spiral stirring blade (81) is fixed to the outside of the first stirring shaft (6); the stirring plate (82) and the dispersion frame (83) are fixed to the outside of the second stirring shaft (7); the discharge hole (15) is flush with the dispersion frame (83); and the discharge trough (14) and the discharge hole (15) are respectively opposite to the first stirring shaft (6) and the second stirring shaft (7).

7. A material mixing device for 3D printing according to claim 1, characterized in that: The bottom of the stirring tank (1) is connected to a discharge pipe (16), and a one-way valve is installed on the discharge pipe (16).

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