Automatic hair fiber dyeing device

Abstract

The present invention relates to the technical field of hair fiber dyeing equipment, and relates to an automatic hair fiber dyeing device. The main structure comprises a dyeing tank, a heating device, a thermal insulation layer, a water injection system, a chemical injection system, a pH measurement device, a constant temperature control device, a liquid circulation device, a drainage system, multi-point precise positioning moving devices, and a PLC control system, wherein the heating device is fixedly arranged outside the bottom of the dyeing tank; the constant temperature control device is mounted on a pipeline of the liquid circulation device at the bottom of the dyeing tank; the chemical injection system is arranged below the water injection system; the pH measurement device and the liquid circulation device are in electric information connection with the PLC control system, respectively; and the multi-point precise positioning moving devices are mounted on two sides of the dyeing tank. The present invention is suitable for segmental dyeing of hair fibers requiring segmented dyeing, enables precise chemical dosing, automatic control of chemical temperature, automatic control of hair lifting, and automatic control of immersion time, thereby improving the stability of dyeing process parameters, has a reasonable and simple overall structural design, is safe, reliable and highly versatile, and involves friendly application environment.

Description

Automatic hair fiber dyeing device Technical Field

[0001] The present invention belongs to the technical field of hair fiber dyeing equipment and relates to an automatic hair fiber dyeing device, in particular a dyeing device that can achieve precise dosing, automatic temperature control, automatic time control, and control of immersion time, thereby improving the stability of dyeing production process parameters and ensuring dyeing accuracy and product batch consistency. Background Art

[0002] The hair products industry uses hair as its primary raw material, producing hair extensions through processes such as pickling, neutralization, rinsing, and dyeing. The dyeing process involves adding bleached hair to a dye, allowing a cyclic reaction to occur, and removing the hair after it reaches the dyeing standard. Currently, dyeing equipment in this field is typically used in stainless steel containers. Water and dyeing solutions are added to the stainless steel containers for mixing. The bleached hair is then placed into the container and stirred several times with a stirring rod during the soaking period. This is a labor-intensive process, and manual dyeing can lead to operational errors such as rough dosing and large errors in weighing. Furthermore, during the dyeing process, operators are unable to accurately control the temperature and pH value of the dyeing solution in real time, resulting in the inability to precisely control factors such as hair cleanliness, dyeing time, and color fastness. Therefore, manual dyeing makes it difficult to control dyeing accuracy and product batch consistency, which can easily lead to economic losses. Furthermore, some chemicals have an odor, making manual dosing inconvenient, inefficient, and prone to personal injury, hindering risk management. The dyeing equipment used in the existing technology is a simple container that is limited to the function of holding hair and dyeing solution. It lacks basic functions such as automatic temperature control, automatic time control, circulation, and automatic pulling. The production site occupies a large area; it is restricted to the purely manual operation method of the operator and the dyeing production process is in a relatively backward state, resulting in low dyeing production efficiency.

[0003] Chinese invention patent application number CN201110321766.6 discloses an automatic wig dyeing machine. A tripod is mounted on the base to secure a lifting mechanism. One end of a cantilever mechanism is attached to the lifting mechanism, while the other end houses a stirring mechanism. The cantilever mechanism moves vertically on the lifting mechanism, driving an agitator up and down. The agitator is positioned within the barrel during downward movement and rises a certain distance above the barrel during upward movement. A handle is provided on the cantilever mechanism to control its rotational movement or fixation within the horizontal plane. A main motor is installed in the cantilever mechanism, which rotates the stirring mechanism via a reduction mechanism. The stirring bar of the stirring mechanism is inserted into the hair to be dyed within the barrel and rotates with the stirring mechanism. This invention patent application achieves sufficient dyeing, significantly improves dyeing quality, and effectively prevents hair products from tangling. However, this invention patent application fails to implement basic functions such as heat preservation, real-time temperature control, circulation, and automatic hair drying. Therefore, in order to overcome the above shortcomings and deficiencies, it is urgent to design an automatic hair fiber dyeing device to achieve precise dosing, automatic pulling, automatic temperature control, automatic time control and immersion time, improve the stability of dyeing production process parameters, ensure dyeing accuracy and product batch consistency, and improve production efficiency. Technical Solutions

[0004] The present invention aims to overcome the shortcomings and deficiencies of the prior art by providing an automatic hair fiber dyeing device to address the problems of low efficiency and high labor intensity in purely manual dyeing, the problem of inaccurate control of production process parameters and unstable product quality caused by purely manual dyeing, the problem of the simplicity and crudeness of existing dyeing equipment, the inability to achieve precise dosing, automatic pulling, automatic temperature control, and automatic time control, and the resulting color fastness and batch instability, and the problem of hair tangling and damage caused by hair stirring during the dyeing process in the prior art, dyeing patterns, color differences between the head and tail, and poor color fastness.

[0005] In order to achieve the above-mentioned purpose, the main structure of the present invention includes: a dyeing tank, a heating device, an insulation layer, a water injection system, a liquid injection system, a pH detection device, a constant temperature control device, a liquid circulation device, a drainage system, a multi-point precise positioning mobile device, and a PLC control system. The dyeing tank is a container with an open top made of metal material. A heating device is fixedly provided on the outer side of the bottom of the dyeing tank. The heating device is used to heat the liquid in the dyeing tank. The heating temperature, heating frequency, and heating start time of the heating device are realized by the intelligent control program set in the PLC control system; the constant temperature control device is installed at the bottom of the dyeing tank. On the pipeline of the liquid circulation device, the temperature of the solution in the dyeing tank is detected in real time by the thermostat PT100. The constant temperature control device is electrically connected to the PLC control system. The PLC control system adjusts the heating device to ensure the constant temperature of the dyeing solution according to the temperature detected and the set parameters of the constant temperature control device. The dyeing tank is covered with an insulation layer. The upper and middle part of the dyeing tank is connected to the water injection system. The liquid injection system is set below the water injection system. The liquid injection system is connected to the dyeing tank. The water injection system is supplied by the external water supply system. The liquid injection system provides dyes configured in proportion. The PLC control system respectively controls the temperature of the dyeing tank through the solenoid valve. The system controls the opening and closing of the water injection system and the liquid injection system, as well as the injection timing. A pH detection device is located below the lowest liquid level and is used to detect the pH value of the liquid in the dyeing tank. The pH detection device is electrically connected to the PLC control system. A liquid circulation device is located below the bottom of the dyeing tank, with its two ends connected to the two sides of the bottom of the dyeing tank. During the dyeing process, the dyeing solution is internally circulated to ensure uniform dyeing solution and uniform temperature of the dyeing liquid. The liquid circulation device is electrically connected to the PLC control system. The drainage system is connected to the bottom of the dyeing tank and is electrically connected to the PLC control system. The PLC control system controls the drainage system via solenoid valves. A multi-point precision positioning movement device is installed on both sides of the dyeing tank, parallel to the height direction of the dyeing tank, and can move up and down precisely to facilitate the control and lifting of the hair fibers. The distance and residence time of the up and down movement are controlled to ensure the infiltration effect. The multi-point precision positioning movement device is electrically connected to the PLC control system. The PLC control system is equipped with a control program to control the operation of the heating device, water injection system, liquid injection system, pH detection device, liquid circulation device, drainage system, and multi-point precision positioning movement device, which are electrically connected to it.

[0006] The heat-insulating layer is made of high-density thermosetting composite polystyrene board.

[0007] The dyeing tank is made of a metal material that is corrosion-resistant, acid-resistant, alkali-resistant, and high-temperature-resistant.

[0008] The heating device is any one of electric heating, steam heating, infrared heating, water circulation heating and oil circulation heating.

[0009] The main structure of the multi-point precise positioning mobile device includes a first base, a second base, a first column, a second column, a first cylinder, a second cylinder, a first moving rod, a second moving rod, a first cross bar, and a second cross bar. The first base and the second base are respectively fixed to the bottoms of both sides of the dyeing tank. The first column and the second column are respectively fixedly arranged on the first base and the second base. The first cylinder and the second cylinder are respectively fixedly arranged in the first column and the second column. The first moving rod and the second moving rod are respectively fixedly arranged on the output shafts of the first cylinder and the second cylinder. The first cross bar and the second cross bar are respectively fixedly arranged on the top ends of the first moving rod and the second moving rod. The first cross bar and the second cross bar are used to fix and suspend hair fibers to be dyed. The first cylinder and the second cylinder are both electrically connected to a PLC control system, and the PLC control system controls the moving distance and dwell time of the cylinder piston rods.

[0010] When the present invention is in use, the PLC control system controls the water injection system and the liquid medicine injection system according to the set program to inject the required proportion of water and liquid medicine into the dyeing tank. When the injection amount reaches the set value, the water injection pump and the liquid medicine injection pump switch are turned off and the solenoid valve is controlled to close the water injection port and the liquid medicine injection port. The PLC control system controls the heating device and the constant temperature control device to work until the program set temperature is reached and the constant temperature is maintained. The pH detection device is controlled to work and receive the detection signal, and the received pH value signal is compared with the value set in the program in real time and the comparison result is displayed. If the pH value signal is inconsistent with the value set in the program, the PLC system controls the liquid medicine injection system to add the corresponding proportion of liquid medicine according to the pH value difference, or adds the corresponding proportion of liquid medicine into the dyeing tank by artificial replenishment to reach the pH set value; the PLC control system controls the liquid circulation device to work, so that the liquid in the dyeing tank The hair fiber is circulated internally to ensure uniform dyeing solution and uniform temperature of the dyeing liquid, to ensure uniform dyeing and avoid dyeing patterns. The hair fiber to be dyed is fixed on the crossbar of the multi-point precise positioning moving device. The PLC control system controls the up and down movement of the multi-point precise positioning moving device. The control program time is set in the PLC control system to make the hair fiber move up and down in the dyeing tank according to the set movement time, movement distance, positioning position, and stay dyeing time program. After being pulled up and stopped according to the set time, it is immersed in the tank for dyeing. After reaching the set dyeing time, it is pulled up again to meet different process requirements such as immersion time, positioning dyeing, pulling frequency, and liquid level inspection. No manual operation is required to achieve better dyeing effect. When the liquid needs to be discharged after dyeing is completed, the PLC control system controls the drainage pump of the drainage system to work and controls the solenoid valve to open the drain port to discharge the liquid.

[0011] The present invention is particularly suitable for dyeing hair fibers that need to be dyed in sections. According to the length of each dyeing section, the PLC control system controls the multi-point precise positioning moving device to move up and down and position it. According to the depth of dyeing required for each section, the PLC control system controls the length of time the multi-point precise positioning moving device is positioned, that is, controls the depth of dyeing of each section of the hair fiber.

[0012] The hair fixing frame is fixed on the second cross bar, and the hair fixing rod of the hair fixing frame is used to fix and suspend hair fibers. An L-shaped first vertical rod and a second vertical rod are symmetrically arranged on the hair fixing rod. The L sides of the L-shaped first vertical rod and the second vertical rod are perpendicular to the hair fixing rod. An integrated hair lower guard rod is arranged between the first vertical rod and the second vertical rod. The ends of the two L sides are hinged with a first movable guard rod and a second movable guard rod respectively. A rectangular enclosure is formed between the first movable guard rod, the second movable guard rod, the two L sides and the hair lower guard rod to accommodate hair fibers and block the middle and lower parts of the hair fibers in the enclosure. When descending and infiltrating, the hair fibers are quickly immersed in the liquid medicine to prevent them from floating on the surface and avoiding tangling and messiness. During use, the first and second movable blocking rods are rotated to the sides to open the enclosure and fix the hair on the hair fixing rod. The first and second movable blocking rods are rotated toward the middle to enclose the hanging hair fibers in the enclosure. After dyeing is completed, the enclosure is opened and the hair fibers are removed. Beneficial effects

[0013] Compared with the existing technology, the present invention can achieve precise drug addition and automatic control of drug solution temperature, so that the temperature in the dyeing tank is maintained within a reasonable calibrated temperature range; automatically control hair lifting and automatically control immersion time, improve production efficiency, improve the stability of dyeing production process parameters, and ensure dyeing accuracy and consistency of product batches; its overall structural design is reasonable and simple, safe and reliable, has good versatility, and is environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic diagram of the main structure of the present invention from a front view and a right view.

[0015] FIG2 is a side sectional view of the present invention.

[0016] FIG3 is a schematic diagram showing the structural principle of a hair fixing frame according to embodiment 3 of the present invention.

[0017] Description of serial number markings: dyeing tank 1, heating device 2, insulation layer 3, water injection system 4, liquid injection system 5, pH detection device 6, constant temperature control device 7, liquid circulation device 8, drainage system 9, multi-point precise positioning moving device 10, PLC control system 11, first base 12, second base 13, first column 14, second column 15, first cylinder 16, second cylinder 17, first moving rod 18, second moving rod 19, first cross bar 20, second cross bar 21, hair fixing rod 22, first vertical rod 23, second vertical rod 24, hair lower block rod 25, first movable block rod 26, second movable block rod 27, enclosure 28. Modes for Carrying Out the Invention

[0018] The present invention will be further described below by way of examples and in conjunction with the accompanying drawings: Example

[0019] The main structure of the automatic hair fiber dyeing device described in this embodiment includes: a dyeing tank 1, a heating device 2, a heat-insulating layer 3, a water injection system 4, a liquid injection system 5, a pH detection device 6, a constant temperature control device 7, a liquid circulation device 8, a drainage system 9, a multi-point precise positioning movement device 10, and a PLC control system 11. The dyeing tank 1 is a container made of metal material with an open top. The heating device 2 is fixedly installed on the outer side of the bottom of the dyeing tank 1. The heating device 2 is used to heat the liquid in the dyeing tank 1. The heating temperature, heating frequency, and heating start time of the heating device 2 are realized by the intelligent control program set in the PLC control system 11; the constant temperature control device 7 It is installed on the pipe of the liquid circulation device 8 at the bottom of the dyeing tank 1. The temperature of the solution in the dyeing tank 1 is detected in real time by the temperature controller PT100. The constant temperature control device 7 is electrically connected to the PLC control system 11. The PLC control system 11 adjusts the heating device 2 to ensure the constant temperature of the dyeing solution according to the temperature detected and the set parameters of the constant temperature control device 7. The outer surface of the dyeing tank 1 is covered with an insulation layer 3. The middle and upper part of the dyeing tank 1 is connected to the water injection system 4. The liquid injection system 5 is set below the water injection system 4. The liquid injection system 5 is connected to the dyeing tank 1. The water injection system 4 is supplied with water by the external water supply system. The liquid injection system 5 provides a dye configured in proportion. The PLC control system 11 The opening and closing of the water injection system 4 and the liquid injection system 5 and the injection time are controlled by electromagnetic valves respectively; the pH detection device 6 is set below the lowest liquid line and is used to detect the pH value of the liquid in the dyeing tank 1. The pH detection device 6 is electrically connected to the PLC control system 11; the liquid circulation device 8 is set below the bottom of the dyeing tank 1, and its two ends are respectively connected to the two sides of the bottom of the dyeing tank 1. During the dyeing process, the dyeing solution is circulated internally to ensure that the dyeing solution is uniform and the dyeing liquid temperature is uniform. The liquid circulation device 8 is electrically connected to the PLC control system 11; the drainage system 9 is connected to the bottom of the dyeing tank 1, and the drainage system 9 is connected to the PLC control system The PLC control system 11 is electrically connected to the dyeing tank 1, and the drainage system 9 is controlled by a solenoid valve. The multi-point precise positioning mobile device 10 is installed on both sides of the dyeing tank 1, parallel to the height direction of the dyeing tank 1, and can move up and down precisely, so as to facilitate the control and lifting of the distance and residence time of the up and down movement of the hair fibers to ensure the infiltration effect. The multi-point precise positioning mobile device 10 is electrically connected to the PLC control system 11. A control program is set in the PLC control system 11 to control the operation of the heating device 2, water injection system 4, liquid injection system 5, pH detection device 6, liquid circulation device 8, drainage system 9, and multi-point precise positioning mobile device 10 connected to the PLC control system 11.

[0020] The thermal insulation layer 3 is made of high-density thermosetting composite polystyrene board.

[0021] The dyeing tank 1 is made of a metal material that is corrosion-resistant, acid-resistant, alkali-resistant, and high-temperature-resistant.

[0022] The heating device 2 is any one of electric heating, steam heating, infrared heating, water circulation heating and oil circulation heating.

[0023] The dye provided by the liquid injection system 5 and configured in proportion is manually prepared in advance and then injected into the liquid injection system 5 .

[0024] The main structure of the multi-point precise positioning mobile device 10 includes a first base 12, a second base 13, a first column 14, a second column 15, a first cylinder 16, a second cylinder 17, a first moving rod 18, a second moving rod 19, a first cross bar 20, and a second cross bar 21. The first base 12 and the second base 13 are respectively fixed to the bottom of both sides of the dyeing tank 1. The first column 14 and the second column 15 are respectively fixed on the first base 12 and the second base 13. The first column 14 and the second column 15 are respectively fixed in the first column 14 and the second column 15. The first cylinder 16 and the second cylinder 17 are respectively fixedly provided with a first moving rod 18 and a second moving rod 19 on their output shafts. The top ends of the first moving rod 18 and the second moving rod 19 are respectively fixedly provided with a first cross bar 20 and a second cross bar 21. The first cross bar 20 and the second cross bar 21 are used to fix and suspend hair fibers to be dyed. The first cylinder 16 and the second cylinder 17 are both electrically connected to a PLC control system 11, which controls the travel distance and dwell time of the cylinder piston rods.

[0025] A multi-point precision positioning device 10 is provided to achieve the up-and-down movement and lifting of the hair fibers. This repeated lifting improves the permeability of the dyeing tank 1 and prevents the hair fibers from tangling in the dyeing tank 1 for a long time. Lifting the hair fibers facilitates the re-mixing and temperature uniformity of the liquid in the dyeing tank 1, thereby achieving a more uniform pH value. This ensures a more uniform dyeing when the hair fibers are re-immersed, avoiding uneven dyeing and improving the dyeing effect. Furthermore, the multi-point precision positioning device 10 primarily enables the dyeing of hair fibers at specific locations, improving the dyeing adequacy of that location, preventing areas of excessively light dyeing, and reducing quality issues such as color differences at the beginning and end of the dyeing process.

[0026] When the present embodiment is in use, the PLC control system 11 controls the water injection system 4 and the liquid medicine injection system 5 according to the set program to inject the required proportion of water and liquid medicine into the dyeing tank 1. When the injection amount reaches the set value, the water injection pump and the liquid medicine injection pump switch are turned off and the solenoid valve is controlled to close the water injection port and the liquid medicine injection port. The PLC control system 11 controls the heating device 2 and the constant temperature control device 7 to work until the program set temperature is reached and the constant temperature is maintained. The pH detection device 6 is controlled to work and receive the detection signal, and the received pH value signal is compared with the value set in the program in real time and the comparison result is displayed. If the pH value signal is inconsistent with the value set in the program, the PLC system controls the liquid medicine injection system 5 to add the corresponding proportion of liquid medicine according to the pH value difference, or adds the corresponding proportion of liquid medicine into the dyeing tank 1 by artificial replenishment to reach the pH set value; the PLC control system 11 controls the liquid circulation device 8 to work so that the dyeing tank 1 The liquid in the dyeing tank 1 is circulated internally to ensure uniform dyeing solution and uniform temperature of the dyeing liquid, thereby ensuring uniform dyeing and avoiding dyeing patterns. The hair fibers to be dyed are fixed on the crossbar of the multi-point precise positioning moving device 10. The PLC control system 11 controls the multi-point precise positioning moving device 10 to move up and down. The PLC control system 11 is set with a control program time so that the hair fibers move up and down in the dyeing tank 1 according to the set movement time, movement distance, positioning position, and dwelling dyeing time program. The hair fibers are pulled up and then stopped for a set time and then immersed in the tank for dyeing. After the set dyeing time is reached, they are pulled up again to meet different process requirements such as immersion dyeing time, positioning dyeing, pulling frequency, and liquid level inspection. No manual operation is required to achieve better dyeing effects. When the liquid needs to be discharged after dyeing is completed, the PLC control system 11 controls the drainage pump of the drainage system 9 to operate and the solenoid valve to open the drain port to discharge the liquid.

[0027] This embodiment is particularly suitable for dyeing hair fibers that require segmented dyeing. The PLC control system 11 controls the vertical movement and positioning of the multi-point precision positioning device 10 based on the length of each segment to be dyed. Furthermore, the PLC control system 11 controls the duration of the multi-point precision positioning device 10's positioning based on the desired dyeing depth of each segment, thereby controlling the dyeing depth of each segment of the hair fiber.

[0028] The structures not disclosed in this embodiment all adopt the existing structures in the prior art. Example

[0029] The main structure of the automatic hair fiber dyeing device described in this embodiment is the same as that of embodiment 1, and the heating device 2 adopts a chassis tube electric heating structure. Example

[0030] The main structure of the automatic hair fiber dyeing device described in this embodiment is the same as that of Embodiment 1 or Embodiment 2. A hair holding frame is fixed to the second crossbar 21. The hair holding frame has a hair holding rod 22 for fixing and suspending hair fibers. The hair holding rod 22 is symmetrically provided with an L-shaped first vertical rod 23 and a second vertical rod 24. The L-sides of the L-shaped first and second vertical rods 23, 24 are perpendicular to the hair holding rod 22. An integral hair lower guard rod 25 is provided between the first and second vertical rods 23, 24. The ends of the two L-sides are hingedly connected to a first movable guard rod 26 and a second movable guard rod 27, respectively. A rectangular enclosure 28 is formed between the first and second movable guard rods 26, 27, the two L-sides, and the hair lower guard rod 25 to accommodate and hold hair fibers. The lower and middle portions of the hair fibers are blocked within the enclosure 28. When the hair fibers are lowered for immersion, they are quickly immersed in the liquid medicine, preventing them from floating on the surface and becoming tangled. During use, the first movable blocking rod 26 and the second movable blocking rod 27 are rotated to the sides to open the enclosure 28 and fix the hair on the hair fixing rod 22. The first movable blocking rod 26 and the second movable blocking rod 27 are rotated toward the middle to surround the hanging hair fibers in the enclosure 28. After dyeing is completed, the enclosure 28 is opened and the hair fibers are removed.

Claims

1. An automatic hair fiber dyeing device, characterized in that The main structure includes a dyeing tank, a heating device, an insulation layer, a water injection system, a liquid injection system, a pH detection device, a constant temperature control device, a liquid circulation device, a drainage system, a multi-point precise positioning mobile device, and a PLC control system. A heating device is fixedly installed on the outside of the bottom of the dyeing tank. The heating temperature, heating frequency, and heating start time of the heating device are realized by the intelligent control program set in the PLC control system; the constant temperature control device is installed on the pipe of the liquid circulation device at the bottom of the dyeing tank, and the temperature controller PT100 detects the temperature of the solution in the dyeing tank in real time. The constant temperature control device and the PLC control system are electrically connected. The PLC control system adjusts the heating device according to the temperature detected and the set parameters of the constant temperature control device to ensure that the temperature of the dyeing solution is constant; an insulation layer is set on the outside of the dyeing tank, and the middle and upper part of the dyeing tank is connected to the water injection system. A liquid injection system is set below the water injection system, and the liquid injection system is connected to the dyeing tank. The water injection system is supplied by an external water supply system, and the liquid injection system provides dyes configured in proportion. The PLC control system is controlled by solenoid valves The opening and closing of the water injection system and the liquid injection system, as well as the liquid injection time; the pH detection device is arranged below the lowest liquid line, and the pH detection device is electrically connected to the PLC control system; the liquid circulation device is arranged below the bottom of the dyeing tank, and its two ends are respectively connected to the two sides of the bottom of the dyeing tank, so that the dyeing solution is internally circulated during the dyeing process to ensure that the dyeing solution is uniform and the temperature of the dyeing liquid is uniform, and the liquid circulation device is electrically connected to the PLC control system; the drainage system is connected to the bottom of the dyeing tank, and the drainage system is electrically connected to the PLC control system, and the PLC control system controls the operation of the drainage system through a solenoid valve; the multi-point precise positioning moving device is installed on both sides of the dyeing tank, parallel to the height direction of the dyeing tank, and can move up and down precisely, and the multi-point precise positioning moving device is electrically connected to the PLC control system; a control program is set in the PLC control system to control the operation of the heating device, water injection system, liquid injection system, pH detection device, liquid circulation device, drainage system, and multi-point precise positioning moving device connected to it electrically.

2. The automatic hair fiber dyeing device according to claim 1, characterized in that The main structure of the multi-point precise positioning mobile device includes a first base, a second base, a first column, a second column, a first cylinder, a second cylinder, a first moving rod, a second moving rod, a first cross bar, and a second cross bar. The first base and the second base are respectively fixed to the bottoms of both sides of the dyeing tank. The first column and the second column are respectively fixedly arranged on the first base and the second base. The first cylinder and the second cylinder are respectively fixedly arranged in the first column and the second column. The first moving rod and the second moving rod are respectively fixedly arranged on the output shafts of the first cylinder and the second cylinder. The first cross bar and the second cross bar are respectively fixedly arranged on the top ends of the first moving rod and the second moving rod. The first cross bar and the second cross bar are used to fix and suspend hair fibers to be dyed. The first cylinder and the second cylinder are both electrically connected to a PLC control system, and the PLC control system controls the moving distance and dwell time of the cylinder piston rods.

3. The automatic hair fiber dyeing device according to claim 2, characterized in that The heating device adopts chassis tube electric heating structure.

4. The automatic hair fiber dyeing device according to claim 3, characterized in that The hair fixing frame is fixed on the second cross bar, and the hair fixing rod of the hair fixing frame is used to fix and suspend hair fibers. An L-shaped first vertical rod and a second vertical rod are symmetrically arranged on the hair fixing rod. The L sides of the L-shaped first vertical rod and the second vertical rod are perpendicular to the hair fixing rod. An integrated hair lower guard rod is arranged between the first vertical rod and the second vertical rod. The ends of the two L sides are hinged with a first movable guard rod and a second movable guard rod respectively. A rectangular enclosure is formed between the first movable guard rod, the second movable guard rod, the two L sides and the hair lower guard rod to accommodate hair fibers and block the middle and lower parts of the hair fibers in the enclosure. When descending and infiltrating, the hair fibers are quickly immersed in the liquid medicine to prevent them from floating on the surface and avoiding tangling and messiness.

5. The automatic hair fiber dyeing device according to any one of claims 1 to 4, characterized in that The device is suitable for dyeing hair fibers that need to be dyed in sections. According to the length of each section to be dyed, the PLC control system controls the multi-point precise positioning mobile device to move up and down and position it. According to the depth of dyeing required for each section, the PLC control system controls the positioning time of the multi-point precise positioning mobile device to control the depth of dyeing of each section of the hair fiber.

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