Hair dye and preparation method thereof

Abstract

The invention discloses a hair dye and a preparation method, and relates to the field of hair dye preparation, and the hair dye comprises the following components by mass: 3-6 parts of natural bioactive amino acid, 2-5 parts of p-phenylenediamine, 1-2 parts of a reducing agent, 1-2 parts of a buffer agent, 1-2 parts of a surfactant, 3-6 parts of a pigment, 1-2 parts of deionized water, and 1-2 parts of a thickener. According to the invention, supplemented raw materials can be injected into the stirring equipment in batches, in the discharging process, the sealing of the stirring equipment is kept, the safety of workers during feeding is improved, the problem of gas discharge during heating of the stirring equipment is prevented, the supplementing amount can be adjusted, the specified amount of raw materials can be conveniently injected, and the supplementing efficiency and accuracy are improved; the production quality of the hair dye is ensured, so that the effect of safely supplementing the hair dye is achieved.

Description

Technical Field

[0001] The invention relates to the field of hair dye preparation, in particular to a hair dye and a preparation method thereof. Background Art

[0002] Hair dye is a kind of cosmetic used to dye hair. It is divided into temporary, semi-permanent and permanent hair dyes. It has the function of changing the color of hair. It uses smaller dye intermediates and coupling agents to enter the hair through the hair scales. Under the action of oxidants, a coupling reaction occurs to form macromolecular dyes, achieving long-term coloring and wash-resistant effects.

[0003] When preparing hair dye, multiple raw materials need to be injected into a stirring device for mixing. Since hair dye requires a large amount of raw materials for preparation, some of which contain highly irritating chemicals, when the staff is refilling the materials, they need to open the stirring device. If directly inhaled, it will cause effects on the body. Although protection can be provided by a protective cover, frequent opening of the refilling device will also cause the steam to be absorbed by the skin. It is difficult to achieve sealed refilling, and the safety is low. Summary of the invention

[0004] The object of the present invention is to provide a hair dye and a preparation method thereof, which can inject supplementary raw materials into a stirring device in batches, and keep the stirring device sealed during the material feeding process, thereby improving the safety of workers when feeding.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a hair dye, comprising: the following ingredients in parts by mass: 3-6 parts of natural bioactive amino acids, 2-5 parts of p-phenylenediamine, 1-2 parts of reducing agents, 1-2 parts of buffering agents, 1-2 parts of surfactants, 3-6 parts of colorants, 1-2 parts of deionized water, and 1-2 parts of thickeners.

[0006] Preferably, the composition comprises 4 parts of natural bioactive amino acid, 3 parts of p-phenylenediamine, 1 part of reducing agent, 2 parts of buffer, 1 part of surfactant, 4 parts of colorant, 2 parts of deionized water and 2 parts of thickener.

[0007] A method for preparing a hair dye, the method comprising the following steps: S1. Inject natural bioactive amino acids, p-phenylenediamine and deionized water into a stirring space of a stirring device for stirring and mixing. The stirring temperature is 70 to 80° C. and the stirring time is 20 to 30 minutes. S2, adding the buffer, reducing agent and surfactant into the feeding device in sequence, and conveying them to the stirring space of the stirring device through the feeding device, the stirring temperature is 40-50°C, and the stirring time is 20-30min; S3, transporting the colorant to the stirring space of the stirring equipment through the feeding device for mixing, and the stirring time is 10 to 15 minutes; S4. The thickener is also transported to the stirring space of the stirring device through the feeding device, and the stirring is continued for 5 to 10 minutes; S5. Stop stirring and wait for the temperature in the stirring space of the stirring device to drop to 0-5°C to obtain the hair dye.

[0008] Preferably, the feeding device in S2 comprises: a circular box and a discharge barrel fixedly mounted on the bottom of the circular box, the discharge barrel fixedly mounted on the top of the stirring device, and the supplemented raw materials and thickener are injected into the stirring device through the discharge barrel, a circular rotating block is rotatably mounted on the inner side of the circular box, a sealing cylinder is arranged on the outer side of the circular rotating block, the inner side of the sealing cylinder is in contact with the outer side of the circular rotating block, and the outer side of the sealing cylinder is in contact with the inner side of the circular box, an injection hole 1 is provided on the top of the sealing cylinder, a discharge hole directly above the discharge barrel is provided on the bottom of the sealing cylinder, and two symmetrical material receiving cavities are provided on the outer side of the circular rotating block, and when the material receiving cavity is aligned with the injection hole 1 of the sealing cylinder When the material receiving chamber is aligned with the discharge hole of the sealing cylinder, the raw material in the material receiving chamber can be discharged from the discharge cylinder through the discharge hole. A mounting plate is fixedly installed on the outer side of the circular box, and a driving motor 1 is fixedly installed on the outer side of the mounting plate. A mounting column is fixedly installed on the side of the circular rotating block close to the driving motor 1, and the mounting column passes through the circular box and is fixedly connected to the output end of the driving motor 1. The driving motor 1 drives the circular rotating block to rotate intermittently through the mounting column. A filling barrel is fixedly installed on the top of the circular box for loading materials. A material dividing component for separating the discharged materials is also provided on the filling barrel. A quantity adjusting component for adjusting the material receiving amount of the material receiving chamber is also provided on the circular box.

[0009] Preferably, the material distribution component includes a fixed plate fixedly installed on the inner side of the injection barrel, the bottom of the fixed plate is an arc-shaped structure and contacts the outer side of the sealing barrel, the top of the fixed plate is provided with three injection holes 2 that are equidistantly distributed, the inner diameter of the injection hole 2 is the same as the inner diameter of the injection hole 1, when any one of the injection holes 2 is aligned with the injection hole 1 of the sealing barrel, the material in the injection barrel can enter the material receiving cavity, and three injection tubes are fixedly installed on the top of the fixed plate, which are respectively located directly above the three injection holes 2, the inner diameter of the injection tubes is the same as the inner diameter of the injection hole 2, and are used to inject different types of raw materials A docking ring is fixedly installed on the outside of the injection tube to facilitate the extension of the injection tube. A rack groove is provided on the outside of the sealing tube, and an arc groove located on the outside of the rack groove is provided on the outside of the circular box. Two symmetrically distributed positioning plates are fixedly installed on the inside of the arc groove, and a rotating rod is rotatably installed between the two positioning plates. A gear matching the rack groove is fixedly installed on the outside of the rotating rod, and the sealing tube is driven to rotate through the gear and the rack groove. A driving motor 2 is fixedly installed on the outside of the circular box, and the output end of the driving motor 2 is fixedly connected to the rotating rod, and the gear is driven to rotate through the driving motor 2 and the rotating rod.

[0010] Preferably, the amount adjustment component includes an installation cavity opened on the inner side of the circular rotating block, a counter-rotating screw is rotatably installed on the inner side of the installation cavity, a baffle is slidably installed on the inner side of the material receiving cavity, four support plates symmetrically distributed in the center are fixedly installed on the side of the baffle close to the counter-rotating screw, the support plate slides and extends to the inside of the installation cavity, a slide plate is fixedly installed between the four support plates, two of the slide plates are respectively matched with the threads at both ends of the counter-rotating screw, and the counter-rotating screw can be rotated to make the two support plates move in opposite directions through the slide plate and the support plate to adjust the storage space in the material receiving cavity, and a handle is provided on the outer side of the circular rotating block. The outer side of the handle is fixedly provided with an adjusting rod rotatably installed on the inner side of the circular rotating block, and the adjusting rod and the outer sides of the different-direction screw are fixedly provided with matching conical wheels. The rotating handle can drive the different-direction screw to rotate through the adjusting rod and the two conical wheels, and the slide plate is fixedly provided with a sliding rod on the side close to the adjusting rod, and the outer side of the circular rotating block is provided with a long groove for the sliding rod to limit the sliding, and the end of the sliding rod away from the slide plate is fixedly provided with an indicator plate, and the outer side of the circular rotating block is provided with a scale bar matching the indicator plate, which is used to indicate the moving distance of the baffle, so as to facilitate the calculation of the storage space of the receiving chamber.

[0011] Preferably, two centrally symmetrical triangular plug plates are slidably installed on the inner side of the mounting plate, a slot for limiting the insertion of the triangular plug plates is opened on the outer side of the mounting column, and a spring rod is fixedly installed between the triangular plug plates and the inner side of the mounting plate to prevent the mounting column from rotating.

[0012] Preferably, a sleeve disc is provided on the outer side of the circular box, and the sleeve disc is connected to the outer side of the circular box through a thread, and the inner side of the sleeve disc is in contact with the outer side of the sealing cylinder. Two symmetrically distributed pull blocks are fixedly installed on the inner side of the sealing cylinder, and an annular groove for accommodating the pull block is provided on the side of the circular rotating block close to the sleeve disc, which facilitates the installation and replacement of the sealing cylinder.

[0013] Preferably, a rubber ring is fixedly mounted on the outer side of the baffle, and the rubber ring contacts the inner side of the material receiving cavity to improve the sealing performance of the baffle.

[0014] Preferably, two symmetrically distributed partitions are fixedly mounted on the outer side of the counter-rotating screw, the partitions are fixedly connected to the inner side of the mounting cavity, and the conical wheel is located between the two partitions to provide protection for the conical wheel.

[0015] Preferably, the hair dye is used in cosmetics.

[0016] The above embodiments of the present invention can achieve the following beneficial effects: The present invention can inject the supplementary raw materials into the stirring device in batches through the quantitative device, and keep the stirring device sealed during the material feeding process, thereby improving the safety of the staff when loading the materials and preventing the problem of gas discharge when the stirring device is heated. The material replenishment amount can be adjusted to facilitate the injection of a specified amount of raw materials, thereby improving the efficiency and accuracy of the material replenishment, ensuring the production quality of the hair dye, and achieving the effect of safe material replenishment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the circular box and the circular rotating block in the present invention; Figure 3 It is a schematic diagram of the structure of the mounting plate and the mounting column in the present invention; Figure 4 It is a schematic diagram of the structure of the sleeve disc and the sealing cylinder in the present invention; Figure 5 It is a schematic diagram of the sealing cylinder and the fixing plate structure in the present invention; Figure 6 It is a schematic diagram of the baffle and the slide plate structure in the present invention; Figure 7 It is a schematic diagram of the structure of the partition plate and the adjusting rod in the present invention; Figure 8 for Figure 7 Schematic diagram of the enlarged structure of area A in the middle.

[0018] In the figure: 1. round box; 2. discharge barrel; 3. round rotating block; 4. sealing barrel; 5. receiving cavity; 6. mounting plate; 7. driving motor 1; 8. mounting column; 9. injection barrel; 10. fixing plate; 11. injection pipe; 12. docking ring; 13. rack groove; 14. positioning plate; 15. rotating rod; 16. gear; 17. driving motor 2; 18. mounting cavity; 19. counter-rotating screw; 20. baffle; 21. support plate; 22. slide plate; 23. handle; 24. adjusting rod; 25. conical wheel; 26. slide bar; 27. indicator plate; 28. scale bar; 29. ​​triangular plug plate; 30. spring rod; 31. sleeve; 32. pull block; 33. rubber ring; 34. partition. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 6 The hair dye shown in the figure includes: the following ingredients in parts by mass: 3-6 parts of natural bioactive amino acids, 2-5 parts of p-phenylenediamine, 1-2 parts of reducing agents, 1-2 parts of buffering agents, 1-2 parts of surfactants, 3-6 parts of colorants, 1-2 parts of deionized water, and 1-2 parts of thickeners; among which 4 parts of natural bioactive amino acids, 3 parts of p-phenylenediamine, 1 part of reducing agents, 2 parts of buffering agents, 1 part of surfactants, 4 parts of colorants, 2 parts of deionized water, and 2 parts of thickeners.

[0021] A method for preparing a hair dye, the method comprising the following steps: S1. Inject natural bioactive amino acids, p-phenylenediamine and deionized water into a stirring space of a stirring device for stirring and mixing. The stirring temperature is 70 to 80° C. and the stirring time is 20 to 30 minutes. S2, adding the buffer, reducing agent and surfactant into the feeding device in sequence, and conveying them to the stirring space of the stirring device through the feeding device, the stirring temperature is 40-50°C, and the stirring time is 20-30min; S3, transporting the colorant to the stirring space of the stirring equipment through the feeding device for mixing, and the stirring time is 10 to 15 minutes; S4. The thickener is also transported to the stirring space of the stirring device through the feeding device, and the stirring is continued for 5 to 10 minutes; S5. Stop stirring and wait for the temperature in the stirring space of the stirring device to drop to 0-5°C to obtain the hair dye.

[0022] The feeding device in S2 includes: a circular box 1 and a discharge barrel 2 fixedly installed at the bottom of the circular box 1, the discharge barrel 2 is fixedly installed at the top of the stirring device, and the supplementary raw materials and thickener are injected into the stirring device through the discharge barrel 2. A circular rotating block 3 is rotatably installed on the inner side of the circular box 1, and a sealing cylinder 4 is arranged on the outer side of the circular rotating block 3. The inner side of the sealing cylinder 4 contacts the outer side of the circular rotating block 3, and the outer side of the sealing cylinder 4 contacts the inner side of the circular box 1. An injection hole 1 is provided on the top of the sealing cylinder 4, and a discharge hole located directly above the discharge barrel 2 is provided on the bottom of the sealing cylinder 4. Two symmetrical receiving chambers 5 are provided on the outer side of the circular rotating block 3. When the receiving chamber 5 is aligned with the injection hole 1 of the sealing cylinder 4, the raw materials can be fed into the mixing device. Injected into the material receiving chamber 5, when the material receiving chamber 5 is aligned with the material discharge hole of the sealing cylinder 4, the raw material in the material receiving chamber 5 can be discharged from the material discharge cylinder 2 through the material discharge hole, a mounting plate 6 is fixedly installed on the outside of the circular box 1, a driving motor 7 is fixedly installed on the outside of the mounting plate 6, a mounting column 8 is fixedly installed on the side of the circular rotating block 3 close to the driving motor 7, the mounting column 8 penetrates the circular box 1 and is fixedly connected to the output end of the driving motor 7, the driving motor 7 drives the circular rotating block 3 to rotate intermittently through the mounting column 8, a material injection barrel 9 is fixedly installed on the top of the circular box 1 for loading, and a material dividing component for separating the unloading is also provided on the material injection barrel 9, and a quantity regulating component for adjusting the material receiving amount of the material receiving chamber 5 is also provided on the circular box 1; The staff can inject the supplementary raw materials into the injection barrel 9, so that the raw materials enter the receiving chamber 5 above the circular rotating block 3, start the driving motor 7 to drive the installation column 8 to rotate, so that the installation column 8 drives the circular rotating block 3 to rotate, and the circular rotating block 3 drives the raw materials to move along the inner side of the sealing barrel 4, so that the circular rotating block 3 rotates 180 degrees, and the two receiving chambers 5 are flipped. The raw materials can be sent from the discharge barrel 2 into the mixing equipment while maintaining the sealing state, so as to maintain the sealing of the mixing equipment and improve the safety of the staff's operation.

[0023] The material distribution component includes a fixed plate 10 fixedly installed on the inner side of the injection barrel 9. The bottom of the fixed plate 10 is an arc-shaped structure and contacts the outer side of the sealing barrel 4. Three injection holes 2 are equidistantly distributed on the top of the fixed plate 10. The inner diameter of the injection hole 2 is the same as the inner diameter of the injection hole 1. When any injection hole 2 is aligned with the injection hole 1 of the sealing barrel 4, the material in the injection barrel 9 can enter the receiving cavity 5. Three injection pipes 11 are fixedly installed on the top of the fixed plate 10. The inner diameter of the injection pipe 11 is the same as the inner diameter of the injection hole 2. It is used to inject different types of raw materials. The docking ring 12 is convenient for extending the injection tube 11. A rack groove 13 is provided on the outer side of the sealing cylinder 4. An arc groove located on the outer side of the rack groove 13 is provided on the outer side of the circular box 1. Two symmetrically distributed positioning plates 14 are fixedly installed on the inner side of the arc groove. A rotating rod 15 is rotatably installed between the two positioning plates 14. A gear 16 matched with the rack groove 13 is fixedly installed on the outer side of the rotating rod 15. The sealing cylinder 4 is driven to rotate through the gear 16 and the rack groove 13. A driving motor 2 17 is fixedly installed on the outer side of the circular box 1. The output end of the driving motor 2 17 is fixedly connected to the rotating rod 15. The gear 16 is driven to rotate through the driving motor 2 17 and the rotating rod 15. The staff can inject different raw materials into the three injection tubes 11 respectively, and the driving motor 2 17 drives the gear 16 to rotate through the rotating rod 15, so that the gear 16 drives the sealing cylinder 4 to rotate through the rack groove 13. When the injection hole 1 on the sealing cylinder 4 is aligned with any injection hole 2 on the fixed plate 10, the raw materials in the injection tube 11 above the injection hole 2 can pass through the injection hole 1 and the injection hole 2 and fall into the receiving cavity 5 of the circular rotating block 3, and keep the other two receiving holes 2 sealed, so as to facilitate the rapid batch feeding of multiple raw materials and improve the feeding efficiency.

[0024] The hair dye is used in cosmetics.

[0025] Working principle: When the staff prepares the hair dye, they inject different raw materials into the three injection tubes 11 respectively, and start the driving motor 2 17. The driving motor 2 17 drives the gear 16 to rotate through the rotating rod 15, so that the gear 16 drives the sealing tube 4 to rotate along the inner side of the circular box 1 through the rack groove 13. When the injection hole 1 on the sealing tube 4 is aligned with any injection hole 2 on the fixing plate 10, the raw materials in the injection tube 11 above the injection hole 2 pass through the injection hole 1 and the injection hole 2 and fall into the receiving cavity 5 of the circular rotating block 3. Then, the staff turns off the driving motor 2 17 and starts the driving motor 1 7. The driving motor 1 7 drives the mounting column 8 to rotate, and the mounting column 8 drives the circular rotating block 3. Block 3 moves along the inner side of the sealing cylinder 4. At this time, the circular rotating block 3 contacts the injection hole 1 of the sealing cylinder 4 to keep the injection hole 1 sealed. When the circular rotating block 3 rotates one hundred and eighty degrees, the receiving cavity 5 filled with the raw material is aligned with the discharge hole on the sealing cylinder 4, and the raw material can enter the mixing device through the discharge hole and the discharge cylinder 2. Finally, the staff starts the driving motor 2 17 again to align the injection hole 1 on the sealing cylinder 4 with the next injection hole 2, and the next raw material can be sent into the receiving cavity 5, and the raw material is sent into the mixing device through the driving motor 1 7. In this way, the feeding of the mixing device is completed, thereby achieving the effect of safe feeding and batch feeding, and improving the convenience of hair dye preparation.

[0026] Example 2: Please refer to Figure 6-Figure 8, this embodiment is a further explanation of the first embodiment. The amount adjustment component shown in the figure includes an installation cavity 18 opened on the inner side of the circular rotating block 3, and a counter-rotating screw 19 is rotatably installed on the inner side of the installation cavity 18. A baffle 20 is slidably installed on the inner side of the receiving cavity 5. Four support plates 21 with central symmetry are fixedly installed on the side of the baffle 20 close to the counter-rotating screw 19. The support plate 21 slides and extends to the inside of the installation cavity 18. A slide plate 22 is fixedly installed between the four support plates 21. The two slide plates 22 are respectively matched with the threads at both ends of the counter-rotating screw 19. Rotating the counter-rotating screw 19 can make the two support plates 21 move in opposite directions through the slide plate 22 and the support plate 21 to adjust the storage space in the receiving cavity 5. A handle 23 is provided on the outer side of the circular rotating block 3. An adjusting rod 24 rotatably installed on the inner side of the circular rotating block 3 is fixedly installed on the outer side of the handle 23. The adjusting rod 24 and the outer side of the counter-rotating screw 19 are fixed A matching conical wheel 25 is installed. Turning the handle 23 can drive the different-direction screw 19 to rotate through the adjusting rod 24 and the two conical wheels 25. A sliding rod 26 is fixedly installed on the side of the slide plate 22 close to the adjusting rod 24. A long groove is provided on the outer side of the circular rotating block 3 for the sliding rod 26 to limit the sliding. An indicator plate 27 is fixedly installed on the end of the sliding rod 26 away from the slide plate 22. A scale bar 28 matching the indicator plate 27 is provided on the outer side of the circular rotating block 3 to indicate the moving distance of the baffle 20, which is convenient for calculating the storage space of the receiving cavity 5. A rubber ring 33 is fixedly installed on the outer side of the baffle 20. The rubber ring 33 contacts the inner side of the receiving cavity 5 to improve the sealing of the baffle 20. Two symmetrically distributed partitions 34 are fixedly installed on the outer side of the different-direction screw 19. The partition 34 is fixedly connected to the inner side of the installation cavity 18. The conical wheel 25 is located between the two partitions 34 to provide protection for the conical wheel 25.

[0027] In this embodiment: the staff can drive the adjusting rod 24 to rotate by turning the handle 23, and the adjusting rod 24 drives the counter-rotating screw 19 to rotate through the two conical wheels 25, so that the counter-rotating screw 19 drives the two slides 22 to move in opposite directions along the inner side of the installation cavity 18, and the slide 22 drives the baffle 20 to move along the inner side of the material receiving cavity 5 through the four support plates 21, so as to adjust the storage space of the material receiving cavity 5, and the slide 22 drives the slide bar 26 to move synchronously, so that the slide bar 26 drives the indicator plate 27 to move along the scale bar 28, and the storage space size of the material receiving cavity 5 can be obtained according to the scale bar 28, so as to facilitate the adjustment of the storage space of the material receiving cavity 5 according to the quality of the supplementary raw materials, thereby improving the convenience of replenishing materials.

[0028] Example 3: Please refer to Figure 2-Figure 4, this embodiment further explains other embodiments. Two centrally symmetrical triangular plug plates 29 are slidably installed on the inner side of the mounting plate 6 in the figure. A slot for limiting the insertion of the triangular plug plate 29 is opened on the outer side of the mounting column 8. A spring rod 30 is fixedly installed between the triangular plug plate 29 and the inner side of the mounting plate 6 to prevent the mounting column 8 from rotating. A sleeve disc 31 is provided on the outer side of the circular box 1. The sleeve disc 31 is connected to the outer side of the circular box 1 through a thread. The inner side of the sleeve disc 31 contacts the outer side of the sealing cylinder 4. Two symmetrically distributed pull blocks 32 are fixedly installed on the inner side of the sealing cylinder 4. An annular groove for accommodating the pull block 32 is opened on the side of the circular rotating block 3 close to the sleeve disc 31, which is convenient for installing and replacing the sealing cylinder 4.

[0029] In this embodiment: when the driving motor 7 drives the circular rotating block 3 to rotate through the mounting column 8, the slot on the mounting column 8 moves along the outer side of the triangular plug plate 29, pushing the triangular plug plate 29 to contract the spring rod 30, so that the triangular plug plate 29 is against the outer side of the mounting column 8. After the circular rotating block 3 rotates half a circle, the triangular plug plate 29 uses the resilience of the spring rod 30 to insert into the slot at the corresponding position, which can prevent the mounting column 8 from rebounding and ensure the position replacement of the two receiving chambers 5. The staff can rotate the sleeve disc 31 to remove the sleeve disc 31 from the circular box 1, and pull the two pull blocks 32 to take out the sealing cylinder 4, so that the sealing cylinder 4 can be removed, which is convenient for installation and disassembly maintenance.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[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 hair dye, characterized in that: include: The invention is composed of the following ingredients in parts by mass: 3-6 parts of natural bioactive amino acids, 2-5 parts of p-phenylenediamine, 1-2 parts of reducing agents, 1-2 parts of buffering agents, 1-2 parts of surfactants, 3-6 parts of colorants, 1-2 parts of deionized water and 1-2 parts of thickeners.

2. A hair dye according to claim 1, characterized in that: The ingredients include 4 parts of natural bioactive amino acids, 3 parts of p-phenylenediamine, 1 part of reducing agent, 2 parts of buffer, 1 part of surfactant, 4 parts of colorant, 2 parts of deionized water and 2 parts of thickener.

3. The method for preparing a hair dye according to claim 1, characterized in that: The preparation method comprises the following steps: S1. Inject natural bioactive amino acids, p-phenylenediamine and deionized water into a stirring space of a stirring device for stirring and mixing. The stirring temperature is 70 to 80° C. and the stirring time is 20 to 30 minutes. S2, adding the buffer, reducing agent and surfactant into the feeding device in sequence, and conveying them to the stirring space of the stirring device through the feeding device, the stirring temperature is 40-50°C, and the stirring time is 20-30min; S3, transporting the colorant to the stirring space of the stirring equipment through the feeding device for mixing, and the stirring time is 10 to 15 minutes; S4. The thickener is also transported to the stirring space of the stirring device through the feeding device, and the stirring is continued for 5 to 10 minutes; S5. Stop stirring and wait for the temperature in the stirring space of the stirring device to drop to 0-5°C to obtain the hair dye.

4. The method for preparing a hair dye according to claim 3, characterized in that: The feeding device in S2 comprises: a circular box (1) and a discharge barrel (2) fixedly mounted on the bottom of the circular box (1), the discharge barrel (2) fixedly mounted on the top of the stirring device, a circular rotating block (3) rotatably mounted on the inner side of the circular box (1), a sealing barrel (4) is arranged on the outer side of the circular rotating block (3), the inner side of the sealing barrel (4) is in contact with the outer side of the circular rotating block (3), the outer side of the sealing barrel (4) is in contact with the inner side of the circular box (1), a material injection hole 1 is provided on the top of the sealing barrel (4), a material discharge hole located directly above the discharge barrel (2) is provided on the bottom of the sealing barrel (4), and the circular rotating block (3) is provided with a sealing barrel (4). ) is provided with two symmetrical material receiving cavities (5) on the outside of the circular box (1), a mounting plate (6) is fixedly installed on the outside of the mounting plate (6), a driving motor (7) is fixedly installed on the outside of the circular rotating block (3), a mounting column (8) is fixedly installed on the side close to the driving motor (7), the mounting column (8) passes through the circular box (1) and is fixedly connected to the output end of the driving motor (7), a material injection barrel (9) is fixedly installed on the top of the circular box (1), a material dividing component for separating the unloading of materials is also provided on the material injection barrel (9), and a quantity adjustment component for adjusting the material receiving amount of the material receiving cavity (5) is also provided on the circular box (1).

5. The method for preparing a hair dye according to claim 4, characterized in that: The material distribution assembly comprises a fixed plate (10) fixedly mounted on the inner side of the injection barrel (9); the bottom of the fixed plate (10) is in an arc-shaped structure and contacts the outer side of the sealing barrel (4); the top of the fixed plate (10) is provided with three injection holes 2 which are equidistantly distributed; the inner diameter of the injection holes 2 is the same as the inner diameter of the injection holes 1; the top of the fixed plate (10) is fixedly mounted with three injection pipes (11) which are respectively located directly above the three injection holes 2; the inner diameter of the injection pipes (11) is the same as the inner diameter of the injection holes 2; and the outer side of the injection pipe (11) is fixedly mounted with a docking ring. (12), a rack groove (13) is provided on the outer side of the sealing cylinder (4), an arc groove located on the outer side of the rack groove (13) is provided on the outer side of the circular box (1), two symmetrically distributed positioning plates (14) are fixedly installed on the inner side of the arc groove, a rotating rod (15) is rotatably installed between the two positioning plates (14), a gear (16) matching with the rack groove (13) is fixedly installed on the outer side of the rotating rod (15), and a second driving motor (17) is fixedly installed on the outer side of the circular box (1), and the output end of the second driving motor (17) is fixedly connected to the rotating rod (15).

6. The method for preparing a hair dye according to claim 4, characterized in that: The amount adjustment component comprises a mounting cavity (18) opened on the inner side of the circular rotating block (3), a counter-rotating screw (19) is rotatably mounted on the inner side of the mounting cavity (18), a baffle (20) is slidably mounted on the inner side of the material receiving cavity (5), four support plates (21) are fixedly mounted on the side of the baffle (20) close to the counter-rotating screw (19) and are distributed symmetrically with respect to the center, the support plates (21) slidably extend into the interior of the mounting cavity (18), a slide plate (22) is fixedly mounted between the four support plates (21), two of the slide plates (22) are respectively matched with the threads at both ends of the counter-rotating screw (19), and a handle is arranged on the outer side of the circular rotating block (3). (23), an adjusting rod (24) rotatably mounted on the inner side of the circular rotating block (3) is fixedly mounted on the outer side of the handle (23), and matching conical wheels (25) are fixedly mounted on the outer sides of the adjusting rod (24) and the different-direction screw (19), a sliding rod (26) is fixedly mounted on the side of the slide plate (22) close to the adjusting rod (24), a long groove for limiting the sliding of the sliding rod (26) is provided on the outer side of the circular rotating block (3), an indicator plate (27) is fixedly mounted on the end of the sliding rod (26) away from the slide plate (22), and a scale bar (28) matching the indicator plate (27) is provided on the outer side of the circular rotating block (3).

7. The method for preparing a hair dye according to claim 4, characterized in that: Two centrally symmetrical triangular plug plates (29) are slidably mounted on the inner side of the mounting plate (6); a slot for limiting insertion of the triangular plug plates (29) is provided on the outer side of the mounting column (8); and a spring rod (30) is fixedly mounted between the triangular plug plates (29) and the inner side of the mounting plate (6).

8. The method for preparing a hair dye according to claim 4, characterized in that: A sleeve disc (31) is arranged on the outside of the circular box (1), and the sleeve disc (31) is connected to the outside of the circular box (1) through a thread, and the inside of the sleeve disc (31) is in contact with the outside of the sealing cylinder (4). Two symmetrically distributed pull blocks (32) are fixedly mounted on the inside of the sealing cylinder (4), and an annular groove for receiving the pull blocks (32) is provided on a side of the circular rotating block (3) close to the sleeve disc (31).

9. The method for preparing a hair dye according to claim 6, characterized in that: A rubber ring (33) is fixedly mounted on the outer side of the baffle (20), the rubber ring (33) being in contact with the inner side of the material receiving chamber (5), two symmetrically distributed partitions (34) are fixedly mounted on the outer side of the counter-rotating screw (19), the partitions (34) being fixedly connected to the inner side of the mounting chamber (18), and the conical wheel (25) is located between the two partitions (34).

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