Raw material mixing device

Abstract

The invention provides a raw material mixing device, and relates to the field of automobile coating blending. A mixing barrel stirring shaft is fixed at the bottom end of a main shaft of the gear motor I; three stirring tooth supporting rings are mounted on the outer side of the stirring shaft of the mixing barrel; three mixing barrel stirring teeth are welded on the outer sides of the three stirring tooth supporting rings; a scraping plate is fixed at one end of each stirring tooth of the mixing barrel; five auxiliary stirring blades are also arranged at the top and the bottom of the stirring teeth of the mixing barrel; a second gear motor is arranged in the middle of the top of each color mixing and proportioning barrel. A proportioning barrel stirring shaft is fixed at the bottom end of a main shaft of each second gear motor; four groups of proportioning barrel stirring teeth are arranged on the outer side of the proportioning barrel stirring shaft; and a charging plate is fixed at the bottom end of each mixing shaft of the proportioning barrel. The device can effectively avoid errors during working of the flow valve, meanwhile, the use cost can be reduced, and the difficulty during later cleaning can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile coating preparation, in particular to a raw material mixing device. Background Art

[0002] After the car body frame is produced, it needs to be sprayed on the frame surface. The commonly used coating process system can be divided into two-coat system, three-coat system and four-coat system according to the coating. No matter which coating system is used, it is necessary to spray the car paint. When preparing the car paint, different colors of paint are often poured into the mixing device for stirring and mixing.

[0003] The paint mixing devices currently used need to continuously add color paint for coloring to the raw materials during the stirring and mixing process. When adding these paints, a flow valve is usually used to control the amount of paint added. However, the flow valve may cause errors due to malfunctions during operation, and the cost of use is also high. In addition, the stirring shaft and stirring teeth in the mixing device are usually fixed with screws during assembly. During the stirring and mixing process, the paint is easy to penetrate into the screw holes, and the paint will also stick to the inner wall of the mixing device, making it difficult to clean later. Summary of the invention

[0004] In view of this, the present invention provides a raw material mixing device to solve the problems that the flow valve controlling the amount of paint added in the existing paint mixing device is prone to errors due to failures, the cost of use is high, and it is difficult to clean the inside of the mixing device at a later stage.

[0005] The present invention provides a raw material mixing device, specifically comprising: a car paint mixing barrel; the car paint mixing barrel is installed on the top of the mixing barrel bracket by bolts; a mixing barrel cover is installed on the top of the car paint mixing barrel by bolts and nuts; a total of six color mixing and proportioning barrels are arranged in a ring on the top of the mixing barrel cover; a No. 1 reduction motor is arranged in the middle position of the top of the mixing barrel cover; a mixing barrel stirring shaft is fixed to the bottom end of the main shaft of the No. 1 reduction motor; a total of three stirring tooth support rings are installed on the outer side of the mixing barrel stirring shaft; the three stirring tooth support rings Three mixing barrel stirring teeth are welded on the outside; a scraper is fixed at one end of the mixing barrel stirring teeth; five auxiliary stirring plates are also provided on the top and bottom of the mixing barrel stirring teeth; a discharge port cover is screwed on the bottom of the car paint mixing barrel; a No. 2 reduction motor is provided in the middle position of the top of the color mixing and proportioning barrel; a proportioning barrel stirring shaft is fixed at the bottom end of the main shaft of the No. 2 reduction motor; four groups of proportioning barrel stirring teeth are provided on the outside of the proportioning barrel stirring shaft; a feeding plate is fixed at the bottom end of the proportioning barrel stirring shaft.

[0006] Furthermore, two semi-cylindrical protrusions are provided on the outer side of the mixing barrel stirring shaft, the inner diameter of the middle circular hole of the stirring tooth support ring is equal to the outer diameter of the mixing barrel stirring shaft, and two semi-cylindrical grooves corresponding to the size of the semi-cylindrical protrusions on the outer side of the mixing barrel stirring shaft are also provided on the outer side of the middle circular hole of the stirring tooth support ring.

[0007] Furthermore, a circular ring magnet is arranged inside the stirring tooth support ring, three cylindrical magnet blocks are fixedly arranged inside the stirring shaft of the mixing barrel, and the three stirring tooth support rings will be located on the outside of the three cylindrical magnet blocks respectively after installation.

[0008] Furthermore, the bottom of the color mixing barrel is provided with an independent circular hollow groove, and the thickness and inner diameter of the circular hollow groove are equal to the thickness and outer diameter of the feeding plate, and the feeding plate is provided with two circular holes of the same size penetrating up and down.

[0009] Furthermore, the scrapers are all inclined arc-shaped plates, and one side of the scrapers is in close contact with the inner wall of the paint mixing barrel, the auxiliary stirring blades are arranged at equal distances, and a rectangular opening is provided between the auxiliary stirring blades and the stirring teeth of the mixing barrel.

[0010] Furthermore, a circular hole penetrating from top to bottom is also provided on the bottom outer wall of the color mixing and proportioning barrel, and when the feeding plate rotates, one of the circular holes provided on it can be located directly below the circular hole on the bottom outer wall of the color mixing and proportioning barrel.

[0011] Furthermore, the mixing barrel stirring teeth are arranged at equal angles, the stirring teeth of the upper and lower adjacent mixing barrels are installed in a staggered manner, and after the stirring tooth support ring is installed, the top surface of the scraper located below will be above the bottom surface of the scraper located above.

[0012] Furthermore, a total of six circular holes are arranged in a circular shape on the mixing barrel cover, and when the feeding plate rotates, one of the circular holes arranged on it can be located directly above the circular hole on the mixing barrel cover.

[0013] The present invention provides a raw material mixing device, which has the following beneficial effects:

[0014] 1. The color mixing and proportioning barrel in the mixing device does not need to be controlled by a flow valve when adding color paint to the paint mixing barrel. The quantitative addition of color paint can be achieved through a rotating feeding plate and the circular holes arranged on it, which can effectively avoid the error of the flow valve when working and also reduce the use cost.

[0015] 2. The mixing barrel stirring teeth in the mixing device cooperate with the auxiliary stirring blades to improve the mixing efficiency of the paint. No screws are required when installing and removing the mixing barrel stirring teeth, thereby avoiding the situation where paint remains in the screw holes. At the same time, the scraper can also clean the paint on the inner wall of the paint mixing barrel, reducing the difficulty of later cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0017] In the attached picture:

[0018] Figure 1 It is a schematic diagram of the main shaft side structure of the paint mixing barrel of the present invention after being cut;

[0019] Figure 2 It is a schematic diagram of the structure of the paint mixing barrel of the present invention after being cut away from the upper axis;

[0020] Figure 3 It is a schematic diagram of the main shaft side structure after the present invention is fully assembled;

[0021] Figure 4 It is a schematic diagram of the main structure of the mixing barrel stirring teeth and the mixing barrel stirring shaft after being assembled in the present invention;

[0022] Figure 5 It is a schematic diagram of the shaft side structure of the mixing barrel stirring shaft and stirring tooth support ring after sectioning in the present invention;

[0023] Figure 6 It is a schematic diagram of the axial structure of the stirring teeth of the mixing barrel in the present invention;

[0024] Figure 7 It is a schematic diagram of the main shaft side structure of the color mixing and proportioning barrel after being cut;

[0025] Figure 8 It is a schematic diagram of the structure of the color mixing and proportioning barrel after being cut in the upward axis side of the present invention.

[0026] Reference numerals list

[0027] 1. Car paint mixing barrel; 2. Mixing barrel bracket; 3. Mixing barrel cover; 4. Color mixing and proportioning barrel; 5. No. 1 reduction motor; 6. Mixing barrel stirring shaft; 7. Stirring tooth support ring; 8. Mixing barrel stirring teeth; 9. Scraper; 10. Auxiliary stirring blade; 11. Discharge port cover; 12. No. 2 reduction motor; 13. Proportioning barrel stirring shaft; 14. Proportioning barrel stirring teeth; 15. Feeding plate. DETAILED DESCRIPTION

[0028] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of specific embodiments of the present invention.

[0029] Example 1: Please refer to Figures 1 to 8 As shown:

[0030] The present invention provides a raw material mixing device, comprising a paint mixing barrel 1; the paint mixing barrel 1 is installed on the top of a mixing barrel bracket 2 by bolts, the paint mixing barrel 1 is used to stir and mix the paint for automobile painting, and the mixing barrel bracket 2 is used to stably support the paint mixing barrel 1; a mixing barrel cover 3 is installed on the top of the paint mixing barrel 1 by bolts and nuts, and the mixing barrel cover 3 can close the opening on the top of the paint mixing barrel 1 after installation, and the mixing barrel cover 3 can also support a color mixing and proportioning barrel 4 and a first reduction motor 5; a total of six color mixing and proportioning barrels 4 are arranged in a ring on the top of the mixing barrel cover 3, and the color mixing and proportioning barrels 4 are used to hold the color paint for color mixing; the outer wall of the bottom of the color mixing and proportioning barrel 4 is also Each of them is provided with a circular hole running through from top to bottom, and when the feeding plate 15 rotates, one of the circular holes arranged on it can be located directly below the circular hole on the outer wall at the bottom of the color mixing and proportioning barrel 4. When it is necessary to add color paint to the car paint mixing barrel 1, the feeding plate 15 can be driven to rotate in the circular empty groove at the bottom of the color mixing and proportioning barrel 4. When one of the circular holes on the feeding plate 15 is located directly below the circular hole on the outer wall at the bottom of the color mixing and proportioning barrel 4, the color paint in the color mixing and proportioning barrel 4 will flow into the circular hole on the feeding plate 15, and when the circular hole on the feeding plate 15 rotates to directly above the circular hole on the mixing barrel cover 3, the color paint will flow into the interior of the car paint mixing barrel 1; a No. 1 reduction motor 5 is arranged in the middle position on the top of the mixing barrel cover 3, and a No. 1 reduction motor 5 is arranged on the top of the mixing barrel cover 3. The motor 5 is used to drive the mixing barrel stirring shaft 6 to rotate, so that the mixing barrel stirring shaft 6 can drive the stirring tooth support ring 7 and the mixing barrel stirring teeth 8 to rotate to stir and mix the car paint in the car paint mixing barrel 1; a mixing barrel stirring shaft 6 is fixed to the bottom end of the main shaft of the No. 1 reduction motor 5, and the mixing barrel stirring shaft 6 is used to drive the stirring tooth support ring 7 and the mixing barrel stirring teeth 8 to rotate to stir and mix the car paint in the car paint mixing barrel 1; a total of three stirring tooth support rings 7 are installed on the outside of the mixing barrel stirring shaft 6, and the stirring tooth support ring 7 is used to support and fix the mixing barrel stirring teeth 8; three mixing barrel stirring teeth 8 are welded on the outside of the three stirring tooth support rings 7, and the mixing barrel stirring shaft 6 drives the stirring tooth support ring 7 and the mixing barrel stirring teeth 8 to rotate to stir and mix the car paint in the car paint mixing barrel 1. The mixing teeth 8 can stir and mix the paint in the paint mixing barrel 1 when rotating, and the mixing barrel mixing teeth 8 can also support the scraper 9 and the auxiliary stirring blade 10; a scraper 9 is fixed at one end of the mixing barrel mixing teeth 8, and the mixing barrel mixing teeth 8 drive the scraper 9 to rotate to scrape the paint on the inner wall of the paint mixing barrel 1; five auxiliary stirring blades 10 are also arranged on the top and bottom of the mixing barrel mixing teeth 8, and the auxiliary stirring blades 10 can also stir the raw materials in the paint mixing barrel 1 when the mixing barrel mixing teeth 8 drive the auxiliary stirring blades 10 to rotate; a discharge port cover 11 is screwed on the bottom of the paint mixing barrel 1 through a thread, and the discharge port cover 11 is used to close the opening at the bottom of the paint mixing barrel 1 for discharging the paint;A No. 2 reduction motor 12 is arranged at the middle position of the top of the color mixing and proportioning barrel 4. The No. 2 reduction motor 12 is used to drive the proportioning barrel stirring shaft 13 to rotate, so that the proportioning barrel stirring shaft 13 can drive the proportioning barrel stirring teeth 14 to rotate to stir the color paint in the color mixing and proportioning barrel 4 to prevent the color paint from solidifying; a proportioning barrel stirring shaft 13 is fixed to the bottom end of the main shaft of the No. 2 reduction motor 12, and the proportioning barrel stirring shaft 13 can drive the proportioning barrel stirring teeth 14 to rotate to stir the color paint in the color mixing and proportioning barrel 4 to prevent the color paint from solidifying; four groups of proportioning barrel stirring teeth 14 are arranged on the outside of the proportioning barrel stirring shaft 13, and the proportioning barrel stirring shaft 13 can drive the proportioning barrel stirring teeth 14 to rotate to stir the color paint in the color mixing and proportioning barrel 4 to prevent the color paint from solidifying. When the mixing teeth 14 rotate, the paint in the color mixing and proportioning barrel 4 can be stirred; a feeding plate 15 is fixed at the bottom end of the mixing barrel stirring shaft 13. When the color mixing paint needs to be added to the car paint mixing barrel 1, the feeding plate 15 can be driven to rotate in the circular empty groove at the bottom of the color mixing and proportioning barrel 4. When one of the circular holes on the feeding plate 15 is located directly below the circular hole on the outer wall of the bottom of the color mixing and proportioning barrel 4, the paint in the color mixing and proportioning barrel 4 will flow into the circular hole on the feeding plate 15. When the circular hole on the feeding plate 15 rotates to the top of the circular hole on the mixing barrel cover 3, the paint will flow into the car paint mixing barrel 1, and the circular hole on the feeding plate 15 can achieve quantitative addition. ;

[0031] Among them, two semi-cylindrical protrusions are arranged on the outer side of the mixing barrel stirring shaft 6, the inner diameter of the middle circular hole of the stirring tooth support ring 7 is equal to the outer diameter of the mixing barrel stirring shaft 6, and two semi-cylindrical grooves corresponding to the sizes of the semi-cylindrical protrusions on the outer side of the mixing barrel stirring shaft 6 are also arranged on the outer side of the circular hole in the middle of the stirring tooth support ring 7. Therefore, after the stirring tooth support ring 7 is installed on the outer side of the mixing barrel stirring shaft 6, it will be engaged with the semi-cylindrical protrusions on the outer side of the mixing barrel stirring shaft 6, so the stirring tooth support ring 7 will not rotate relative to the mixing barrel stirring shaft 6, avoiding slipping when the mixing barrel stirring shaft 6 drives the stirring tooth support ring 7 and the mixing barrel stirring teeth 8 to rotate.

[0032] Among them, a circular ring magnet is provided inside the stirring tooth support ring 7, and three cylindrical magnet blocks are fixedly provided inside the mixing barrel stirring shaft 6. After installation, the three stirring tooth support rings 7 will be located on the outside of the three cylindrical magnet blocks respectively. When installing the mixing barrel stirring teeth 8, the stirring tooth support ring 7 can be first put on the outside of the bottom end of the mixing barrel stirring shaft 6 and pushed upward. When the stirring tooth support ring 7 is located on the outside of the cylindrical magnet block inside the mixing barrel stirring shaft 6, the circular ring magnet in the stirring tooth support ring 7 will be firmly adsorbed with the cylindrical magnet block, so that the positions of the stirring tooth support ring 7 and the mixing barrel stirring teeth 8 can be fixed.

[0033] Among them, an independent circular empty groove is provided at the bottom of the color mixing and proportioning barrel 4, and the thickness and inner diameter of the circular empty groove are equal to the thickness and outer diameter of the feeding plate 15. The feeding plate 15 is provided with two circular holes of the same size that penetrate up and down. When it is necessary to add color paint to the car paint mixing barrel 1, the feeding plate 15 can be driven to rotate in the circular empty groove at the bottom of the color mixing and proportioning barrel 4. When one of the circular holes on the feeding plate 15 is located directly below the circular hole on the outer wall of the bottom of the color mixing and proportioning barrel 4, the color paint in the color mixing and proportioning barrel 4 will flow into the circular hole on the feeding plate 15, and when the circular hole on the feeding plate 15 is rotated to be directly above the circular hole on the mixing barrel cover 3, the color paint will flow into the interior of the car paint mixing barrel 1, and the circular hole on the feeding plate 15 can realize quantitative addition.

[0034] Among them, the scrapers 9 are all inclined arc-shaped plates, and one side of the scrapers 9 is tightly attached to the inner wall of the car paint mixing barrel 1, the auxiliary stirring blades 10 are arranged at equal distances, and a rectangular opening is arranged between the auxiliary stirring blades 10 and the mixing barrel stirring teeth 8. When in use, the mixing barrel stirring shaft 6 and the mixing barrel stirring teeth 8 can be driven by the No. 1 reduction motor 5 to rotate counterclockwise to stir the raw materials in the car paint mixing barrel 1. In this process, the auxiliary stirring blades 10 can also be in uniform contact with the raw materials, so they can also play an auxiliary stirring role and improve the stirring efficiency. The rectangular openings set on the auxiliary stirring blades 10 can also reduce the resistance during its rotation. At the same time, the scrapers 9 will also stick to the inner wall of the car paint mixing barrel 1 and rotate counterclockwise, and because the scrapers 9 are all arranged at an angle, the scrapers 9 can push the paint on the inner wall of the car paint mixing barrel 1 downward.

[0035] Among them, the mixing barrel stirring teeth 8 are set at equal angles, and the upper and lower adjacent mixing barrel stirring teeth 8 are staggered. After the stirring tooth support ring 7 is installed, the top surface of the scraper 9 located below will be above the bottom surface of the scraper 9 located above. Therefore, the scraper 9 on the mixing barrel stirring teeth 8 located below can continue to push down the paint pushed downward by the scraper 9 on the mixing barrel stirring teeth 8 located above, so that the residual paint on the inner wall of the paint mixing barrel 1 can be cleaned more thoroughly.

[0036] Among them, a total of six circular holes are arranged in a ring on the mixing barrel cover 3, and when the feeding plate 15 rotates, one of the circular holes arranged on it can be located directly above the circular hole on the mixing barrel cover 3. Therefore, when the circular hole on the feeding plate 15 rotates to be directly above the circular hole on the mixing barrel cover 3, the paint contained in this circular hole will flow into the interior of the car paint mixing barrel 1 to complete the feeding.

[0037] Example 2: Please refer to Figures 1 to 8 As shown:

[0038] The outer side of the scraper 9 can be wrapped with a layer of rubber, so the contact surface between the scraper 9 and the inner wall of the paint mixing barrel 1 will be more sealed, further reducing the paint residue on the inner wall of the paint mixing barrel 1, and can also avoid the scraper 9 directly rubbing against the paint mixing barrel 1 and generating a loud noise. The outer side of the feeding plate 15 can also be wrapped with a layer of rubber, so the sealing of the contact surface between the feeding plate 15 and the bottom of the color mixing barrel 4 can be ensured, avoiding the leakage of the colored paint in the color mixing barrel 4.

[0039] Specific usage method: When the device is needed to stir and mix the car paint for automobile painting, first place the device through the support of the mixing barrel bracket 2, and remove the mixing barrel cover 3 from the top of the car paint mixing barrel 1, and then install the three sets of mixing barrel stirring teeth 8 on the outside of the mixing barrel stirring shaft 6. When installing, first put the stirring tooth support ring 7 on the outside of the bottom end of the mixing barrel stirring shaft 6 and push it upward. When the stirring tooth support ring 7 is located on the outside of the cylindrical magnet block inside the mixing barrel stirring shaft 6, the annular magnet in the stirring tooth support ring 7 will be firmly adsorbed with the cylindrical magnet block, so that the stirring tooth support ring 7 and the mixing barrel stirring can be The position of the tooth 8 is fixed, and then the raw materials for mixing car paint can be poured into the car paint mixing barrel 1, and the mixing barrel cover 3 is reinstalled on the top of the car paint mixing barrel 1, and the color paint for color mixing is poured into the color mixing and proportioning barrel 4 for storage. When it is necessary to add color mixing paint to the car paint mixing barrel 1, the No. 2 reduction motor 12 can be controlled to drive the feeding plate 15 to rotate in the circular empty groove at the bottom of the color mixing and proportioning barrel 4 through the proportioning barrel stirring shaft 13. When one of the circular holes on the feeding plate 15 is located directly below the circular hole on the outer wall of the bottom of the color mixing and proportioning barrel 4, the color paint in the color mixing and proportioning barrel 4 will flow into the circular hole on the feeding plate 15, and when the feeding When the round hole on the plate 15 rotates to the top of the round hole on the mixing barrel cover 3, the paint will flow into the paint mixing barrel 1, and the round hole on the feeding plate 15 can realize quantitative addition, and the mixing barrel stirring shaft 13 will also drive the mixing barrel stirring teeth 14 on the outside to rotate synchronously during the rotation, so as to stir the paint in the color mixing and proportioning barrel 4 to prevent the paint in the color mixing and proportioning barrel 4 from solidifying, and then the mixing barrel stirring shaft 6 and the mixing barrel stirring teeth 8 can be driven by the first reduction motor 5 to rotate counterclockwise to stir the raw materials in the paint mixing barrel 1, and the auxiliary stirring blade 10 can also be evenly contacted with the raw materials during this process. The paint mixing bucket 1 has a plurality of inner surfaces, and the outer surfaces of the paint mixing bucket 1 are connected to the paint mixing bucket 1. The paint mixing bucket 1 has a plurality of inner surfaces, and the outer surfaces of the paint mixing bucket 1 are connected to the paint mixing bucket 1. The paint mixing bucket 1 has a plurality of inner surfaces, and the outer surfaces of the paint mixing bucket 1 have ...

Claims

1. A raw material mixing device, comprising a paint mixing barrel (1); the paint mixing barrel (1) is mounted on the top of a mixing barrel bracket (2) by bolts; a mixing barrel cover (3) is mounted on the top of the paint mixing barrel (1) by bolts and nuts; a total of six color mixing barrels (4) are arranged in a ring on the top of the mixing barrel cover (3); a first reduction motor (5) is arranged in the middle of the top of the mixing barrel cover (3); a mixing barrel stirring shaft (6) is fixed to the bottom end of the main shaft of the first reduction motor (5); characterized in that, A total of three stirring tooth support rings (7) are installed on the outer side of the mixing barrel stirring shaft (6); three mixing barrel stirring teeth (8) are welded on the outer sides of the three stirring tooth support rings (7); a scraper (9) is fixed at one end of the mixing barrel stirring teeth (8); five auxiliary stirring plates (10) are also arranged on the top and bottom of the mixing barrel stirring teeth (8); a discharge port cover (11) is screwed on the bottom of the paint mixing barrel (1); a No. 2 reduction motor (12) is arranged at the middle position of the top of the color mixing barrel (4); a mixing barrel stirring shaft (13) is fixed at the bottom end of the main shaft of the No. 2 reduction motor (12); four groups of mixing barrel stirring teeth (14) are arranged on the outer side of the mixing barrel stirring shaft (13); a feeding plate (15) is fixed at the bottom end of the mixing barrel stirring shaft (13).

2. A raw material mixing device as claimed in claim 1, characterized in that: The bottom of the color mixing and proportioning barrel (4) is provided with an independent circular hollow groove, and the thickness and inner diameter of the circular hollow groove are equal to the thickness and outer diameter of the feeding plate (15), and the feeding plate (15) is provided with two circular holes of the same size penetrating from top to bottom.

3. A raw material mixing device as claimed in claim 1, characterized in that: The bottom outer wall of the color mixing and proportioning barrel (4) is also provided with a circular hole penetrating from top to bottom, and when the feeding plate (15) rotates, one of the circular holes provided on it can be located directly below the circular hole on the bottom outer wall of the color mixing and proportioning barrel (4).

4. A raw material mixing device as claimed in claim 1, characterized in that: A total of six circular holes are arranged in a circular pattern on the mixing barrel cover (3), and when the feeding plate (15) rotates, one of the circular holes arranged on it can be located directly above the circular hole on the mixing barrel cover (3).

5. A raw material mixing device as claimed in claim 1, characterized in that: The outer side of the mixing barrel stirring shaft (6) is provided with two semi-cylindrical protrusions, the inner diameter of the central circular hole of the stirring tooth support ring (7) is equal to the outer diameter of the mixing barrel stirring shaft (6), and the outer side of the central circular hole of the stirring tooth support ring (7) is also provided with two semi-cylindrical grooves corresponding to the size of the semi-cylindrical protrusions on the outer side of the mixing barrel stirring shaft (6).

6. A raw material mixing device as claimed in claim 1, characterized in that: The stirring tooth support ring (7) is provided with a circular ring magnet inside, and three columnar magnet blocks are fixedly provided inside the mixing barrel stirring shaft (6), and the three stirring tooth support rings (7) are respectively located on the outside of the three columnar magnet blocks after installation.

7. A raw material mixing device as claimed in claim 1, characterized in that: The scrapers (9) are all inclined arc-shaped plates, and one side of the scrapers (9) is in close contact with the inner wall of the paint mixing barrel (1). The auxiliary stirring blades (10) are all arranged at equal distances, and a rectangular opening is provided between the auxiliary stirring blades (10) and the mixing barrel stirring teeth (8).

8. A raw material mixing device as claimed in claim 1, characterized in that: The mixing barrel stirring teeth (8) are arranged at equal angles, and the stirring teeth (8) of the mixing barrels adjacent to each other are installed in a staggered manner. After the stirring tooth support ring (7) is installed, the top surface of the scraper (9) located below will be above the bottom surface of the scraper (9) located above.

Images