Dyeing device for regenerated polyester production and use method thereof

Abstract

The invention belongs to the technical field of dyeing devices, and discloses a dyeing device for regenerated polyester production and a using method thereof.The dyeing device comprises a dyeing box, a cross rod is installed at the top end of the dyeing box and connected with the dyeing box through a lifting assembly, and the bottom end of the cross rod is rotationally connected with a first hanging rod through a rotating assembly; a second hanging rod is arranged at the bottom end of the first hanging rod, a mixing assembly is arranged below the second hanging rod, the lifting assembly and the rotating assembly are arranged in a matched mode, after regenerated polyester is dyed, the first hanging rod and the second hanging rod move upwards and slide out of the dyeing box through starting of the first motor, and then the second motor is started to drive the first hanging rod to rotate; according to the spinning device for the regenerated polyester fibers, the regenerated polyester fibers are rotated, redundant dye liquor in the regenerated polyester fibers can be screwed out, the production efficiency and the product quality of the regenerated polyester fibers can be improved, the influence on the environment can be further reduced, and the win-win situation of economic benefits and environmental protection is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of dyeing devices, and in particular relates to a dyeing device for regenerated polyester production and a use method thereof. Background Art

[0002] Recycled polyester, also known as recycled polyester fiber, is a polyester fiber that is reprocessed from recycled waste polyester materials (including but not limited to bottle flakes, foam, waste silk, waste pulp and waste textiles, etc.) through a specific recycling process. The production process of this fiber not only helps to reduce environmental pollution, but also effectively saves resources and achieves sustainable development;

[0003] In the production process of recycled polyester, dyeing is a crucial link. The quality of the dyeing process directly affects the final quality and appearance of the recycled polyester. Directly taking out the recycled polyester with excessive dye from the dyeing liquid after dyeing may cause the dye to drip or splash, which will not only have a negative impact on the environment, but also lead to a waste of dyes and water resources. Summary of the invention

[0004] The object of the present invention is to provide a dyeing device for regenerated polyester production and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solution: a dyeing device for regenerated polyester production, comprising a dyeing box, a crossbar is installed at the top of the dyeing box, the crossbar is connected to the dyeing box through a lifting assembly, the bottom end of the crossbar is rotatably connected to a first hanging rod through a rotating assembly, a second hanging rod is arranged at the bottom end of the first hanging rod, and a mixing assembly is arranged below the second hanging rod;

[0006] The lifting assembly includes a connecting plate fixedly mounted at the bottom end of the crossbar, two connecting plates are symmetrically arranged, and both connecting plates are slidably mounted inside the dyeing box, one of the connecting plates is internally threadedly connected to a threaded rod, and a first motor is mounted at the bottom end of the threaded rod, and the first motor is arranged inside the dyeing box;

[0007] The rotating assembly includes a first rotating shaft fixedly installed on the top end of the first hanging rod, a first gear fixedly installed on the outer wall of the first rotating shaft, a second gear meshingly connected to one side of the first gear, a second rotating shaft fixedly installed inside the second gear, and a second motor installed on the top end of the second rotating shaft.

[0008] As a further technical solution of the present invention, the second hanging rod is rotatably connected to the first hanging rod.

[0009] As a further technical solution of the present invention, the first rotating shaft is rotatably installed inside the cross bar, and a coil spring is installed between the first rotating shaft and the cross bar.

[0010] As a further technical solution of the present invention, both ends of the first hanging rod and the second hanging rod are provided with limit rods.

[0011] As a further technical solution of the present invention, the limiting rods at both ends of the first hanging rod and the second hanging rod are fixedly connected by a third rotating shaft, and the third rotating shaft is rotatably installed inside the first hanging rod and the second hanging rod.

[0012] As a further technical solution of the present invention, rack plates are slidably installed inside the first hanging rod and the second hanging rod, and one side of the two rack plates is meshed and connected with a third gear, and the third gear is fixedly installed on the outer wall of the third rotating shaft.

[0013] As a further technical solution of the present invention, a first connecting shaft is fixedly connected to the bottom end of one of the rack plates, and the first connecting shaft is rotatably mounted inside the other rack plate.

[0014] As a further technical solution of the present invention, the mixing assembly includes a mixing plate arranged below the second hanging rod, the bottom end of the mixing plate is fixedly connected with a fifth rotating shaft, the fifth rotating shaft is rotatably installed inside the dyeing box, a second pulley group is installed on the outer wall of the fifth rotating shaft, a second connecting shaft is installed on the end of the second pulley group away from the fifth rotating shaft, a connecting rod is embedded in the interior of the second connecting shaft, a fourth rotating shaft is fixedly installed on the top end of the connecting rod, the fourth rotating shaft is rotatably installed inside another of the connecting plates, a first pulley group is installed on the top end of the fourth rotating shaft, and an end of the first pulley group away from the fourth rotating shaft is installed on the outer wall of the second rotating shaft.

[0015] As a further technical solution of the present invention, the connecting rod and the second connecting shaft are slidably connected.

[0016] A method for using a dyeing device for producing regenerated polyester, comprising the following steps:

[0017] S1: When the recycled polyester is dyed, the first motor is started to drive the threaded rod to rotate, and the rotation of the threaded rod drives the connecting plate to move, so that the connecting plate moves upward on the inner wall of the dyeing box, and the movement of the connecting plate drives the movement of the cross bar, and the movement of the cross bar drives the movement of the first hanging rod and the second hanging rod, so that the first hanging rod and the second hanging rod slide out of the dyeing box;

[0018] S2: Then one of the limit rods is rotated, the rotation of the limit rod drives the rotation of the third rotating shaft, the rotation of the third rotating shaft drives the rotation of the third gear, the rotation of the third gear drives the movement of the rack plate, and the movement of one of the rack plates drives the other rack plate to move synchronously, so that the limit rods at both ends of the first hanging rod and the second hanging rod rotate synchronously, so that the limit rods are parallel to the first hanging rod and the second hanging rod;

[0019] S3: Then, the rolled recycled polyester is placed on the outer walls of the first hanging rod and the second hanging rod, and the limiting rod is rotated again so that the limiting rod is perpendicular to the first hanging rod or the second hanging rod;

[0020] S4: Finally, the first motor is started again to move the first hanging rod and the second hanging rod into the dyeing box, and the regenerated polyester fiber is immersed in the dyeing liquid for dyeing;

[0021] S5: After dyeing is completed, similarly, the first hanging rod and the second hanging rod are moved upward and slid out of the dyeing box, and then the second motor is started to drive the second rotating shaft to rotate, the rotation of the second rotating shaft drives the rotation of the second gear, the rotation of the second gear drives the rotation of the first gear, and the rotation of the first gear drives the rotation of the first hanging rod, so that the regenerated polyester fiber rotates and the internal dye solution is squeezed out;

[0022] S6: When the second rotating shaft rotates, the fourth rotating shaft is driven to rotate through the first belt pulley group, the rotation of the fourth rotating shaft drives the second connecting shaft to rotate, the rotation of the second connecting shaft drives the fifth rotating shaft to rotate through the second belt pulley group, the rotation of the fifth rotating shaft drives the mixing plate to rotate, so that the mixing plate stirs the dye liquid inside the dyeing box to facilitate the next dyeing;

[0023] S7: After the excess dyeing liquid inside the regenerated polyester is wrung out, the limiting rod is rotated in a similar manner to make it parallel to the first hanging rod and the second hanging rod, the regenerated polyester is taken out, and then a new regenerated polyester to be dyed is installed, and the above steps are repeated to perform dyeing.

[0024] The beneficial effects of the present invention are as follows:

[0025] 1. The present invention is arranged by cooperating with a lifting component and a rotating component. After dyeing is completed, the first motor is started to move the first hanging rod and the second hanging rod upward and out of the dyeing box, and then the second motor is started to drive the second rotating shaft to rotate, the rotation of the second rotating shaft drives the rotation of the second gear, the rotation of the second gear drives the rotation of the first gear, and the rotation of the first gear drives the rotation of the first hanging rod, so that the regenerated polyester fiber rotates, which helps to wring out the excess dye inside the regenerated polyester, which can not only improve the production efficiency and product quality of the regenerated polyester, but also further reduce the impact on the environment, and achieve a win-win situation of economic benefits and environmental protection.

[0026] 2. The present invention sets a limit rod. When installing or removing the regenerated polyester fiber, the limit rod at one end of the first hanging rod or the second hanging rod is rotated. The rotation of the limit rod drives the rotation of the third rotating shaft. The rotation of the third rotating shaft drives the rotation of the third gear. The rotation of the third gear drives the movement of the rack plate. The movement of one rack plate drives the synchronous movement of the other rack plate, so that the limit rods at both ends of the first hanging rod and the second hanging rod rotate synchronously, thereby improving the efficiency during installation or replacement.

[0027] 3. The present invention arranges a mixing assembly. When the second rotating shaft rotates, the fourth rotating shaft is driven to rotate through the first pulley group. The rotation of the fourth rotating shaft drives the second connecting shaft to rotate. The rotation of the second connecting shaft drives the fifth rotating shaft to rotate through the second pulley group. The rotation of the fifth rotating shaft drives the mixing plate to rotate, so that the mixing plate stirs the dye liquid inside the dyeing box, which helps to reduce the concentration gradient in the dye liquid, makes the distribution of the dye in the dye liquid more uniform, and facilitates subsequent dyeing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic cross-sectional view of the overall structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the cross-section structure of the dyeing box of the present invention;

[0031] Figure 4 For the present invention Figure 3 A schematic diagram of the structure enlargement in the middle;

[0032] Figure 5 For the present invention Figure 3 A magnified schematic diagram of the structure at B in the middle;

[0033] Figure 6 This is a schematic diagram of the structure of the first hanging rod and the second hanging rod of the present invention;

[0034] Figure 7 It is a schematic cross-sectional view of the structure of the first hanging rod and the second hanging rod of the present invention;

[0035] Figure 8 It is a schematic diagram of the structure of the first connecting axis of the present invention.

[0036] In the figure: 1. dyeing box; 2. cross bar; 3. connecting plate; 4. threaded rod; 5. first motor; 6. first hanging rod; 7. first rotating shaft; 8. first gear; 9. second gear; 10. second rotating shaft; 11. second motor; 12. coil spring; 13. limit rod; 14. third rotating shaft; 15. third gear; 16. rack plate; 17. first connecting shaft; 18. first pulley group; 19. fourth rotating shaft; 20. connecting rod; 21. second connecting shaft; 22. second pulley group; 23. fifth rotating shaft; 24. mixing plate; 25. second hanging rod. DETAILED DESCRIPTION

[0037] 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.

[0038] like Figures 1 to 8 As shown, in an embodiment of the present invention, a dyeing device for regenerated polyester production includes a dyeing box 1, a crossbar 2 is installed on the top of the dyeing box 1, the crossbar 2 is connected to the dyeing box 1 through a lifting assembly, the bottom end of the crossbar 2 is rotatably connected to a first hanging rod 6 through a rotating assembly, the bottom end of the first hanging rod 6 is provided with a second hanging rod 25, and a mixing assembly is provided below the second hanging rod 25;

[0039] The lifting assembly includes a connecting plate 3 fixedly mounted at the bottom end of the crossbar 2, two connecting plates 3 are symmetrically arranged, and both connecting plates 3 are slidably mounted inside the dyeing box 1, and a threaded rod 4 is connected to the inner thread of one of the connecting plates 3, and a first motor 5 is installed at the bottom end of the threaded rod 4, and the first motor 5 is arranged inside the dyeing box 1;

[0040] The rotating assembly includes a first rotating shaft 7 fixedly installed on the top of the first hanging rod 6, a first gear 8 is fixedly installed on the outer wall of the first rotating shaft 7, a second gear 9 is meshed and connected to one side of the first gear 8, a second rotating shaft 10 is fixedly installed inside the second gear 9, and a second motor 11 is installed on the top of the second rotating shaft 10.

[0041] Through the coordinated arrangement of the lifting assembly and the rotating assembly, when the regenerated polyester is dyed, the first motor 5 is first started to drive the threaded rod 4 to rotate, and the rotation of the threaded rod 4 drives the connecting plate 3 to move, so that the connecting plate 3 moves upward on the inner wall of the dyeing box 1, and the movement of the connecting plate 3 drives the movement of the cross bar 2, and the movement of the cross bar 2 drives the movement of the first hanging rod 6 and the second hanging rod 25, so that the first hanging rod 6 and the second hanging rod 25 slide out of the dyeing box 1;

[0042] Then, the regenerated polyester fiber prepared in a roll is wrapped around the outer walls of the first hanging rod 6 and the second hanging rod 25, and finally, the first motor 5 is started again to move the first hanging rod 6 and the second hanging rod 25 into the dyeing box 1, and the regenerated polyester fiber is immersed in the dyeing solution for dyeing;

[0043] After dyeing is completed, the first motor 5 is started to move the first hanging rod 6 and the second hanging rod 25 upward and out of the dyeing box 1, and then the second motor 11 is started to drive the second rotating shaft 10 to rotate, and the rotation of the second rotating shaft 10 drives the rotation of the second gear 9, and the rotation of the second gear 9 drives the rotation of the first gear 8, and the rotation of the first gear 8 drives the rotation of the first hanging rod 6, so that the regenerated polyester fiber rotates, which helps to squeeze out the excess dye inside the regenerated polyester, which can not only improve the production efficiency and product quality of the regenerated polyester, but also further reduce the impact on the environment, and achieve a win-win situation of economic benefits and environmental protection.

[0044] like Figure 2 , Figure 3 and Figure 6 As shown, the second hanging rod 25 is rotatably connected to the first hanging rod 6.

[0045] like Figure 4 and Figure 6 As shown, the first rotating shaft 7 is rotatably installed inside the cross bar 2, and a coil spring 12 is installed between the first rotating shaft 7 and the cross bar 2.

[0046] The second gear 9 is configured as a sector gear;

[0047] When the second gear 9 rotates and meshes with the first gear 8, it drives it to rotate. The rotation of the first gear 8 drives the rotation of the first rotating shaft 7. When the first rotating shaft 7 rotates, the coil spring 12 deforms to store elastic potential energy. When the second gear 9 continues to rotate, the outer wall tooth block separates from the first gear 8 through the coil spring 12 to release the elastic potential energy to reverse the first rotating shaft 7, so that the first hanging rod 6 reciprocates forward and reverse rotation, allowing the recycled polyester to be twisted back and forth, which not only facilitates the discharge of the dye inside the recycled polyester, but also prevents the tension of the recycled polyester from being too tight, so as to ensure product quality.

[0048] like Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, both ends of the first hanging rod 6 and the second hanging rod 25 are provided with limit rods 13 .

[0049] During the dyeing process, the limiting rod 13 is perpendicular to the first hanging rod 6 and the second hanging rod 25;

[0050] When the first hanging rod 6 is rotating, the regenerated polyester fiber is limited to prevent it from sliding, thereby improving the stability during dehydration.

[0051] like Figure 3 and Figure 7 As shown, the limiting rods 13 at both ends of the first hanging rod 6 and the second hanging rod 25 are fixedly connected through the third rotating shaft 14, and the third rotating shaft 14 is rotatably installed inside the first hanging rod 6 and the second hanging rod 25.

[0052] When installing or removing the regenerated polyester fiber, the limiting rod 13 at one end of the first hanging rod 6 or the second hanging rod 25 is rotated, and the limiting rod 13 at the other end is driven to rotate synchronously through the connection with the third rotating shaft 14, so that the limiting rod 13 is parallel to the first hanging rod 6 or the second hanging rod 25, which is convenient for putting the regenerated polyester fiber on the outer wall of the first hanging rod 6 or the second hanging rod 25 or removing it.

[0053] like Figure 7 As shown, rack plates 16 are slidably mounted inside the first hanging rod 6 and the second hanging rod 25 , and one side of the two rack plates 16 is meshedly connected with a third gear 15 , which is fixedly mounted on the outer wall of the third rotating shaft 14 .

[0054] When installing or removing the regenerated polyester fiber, the limiting rod 13 at one end of the first hanging rod 6 or the second hanging rod 25 is rotated. The rotation of the limiting rod 13 drives the rotation of the third rotating shaft 14. The rotation of the third rotating shaft 14 drives the rotation of the third gear 15. The rotation of the third gear 15 drives the movement of the rack plate 16. The movement of one rack plate 16 drives the synchronous movement of the other rack plate 16, so that the limiting rods 13 at both ends of the first hanging rod 6 and the second hanging rod 25 rotate synchronously, thereby improving the efficiency during installation or replacement.

[0055] like Figure 8 As shown, a first connecting shaft 17 is fixedly connected to the bottom end of one of the rack plates 16 , and the first connecting shaft 17 is rotatably mounted inside the other rack plate 16 .

[0056] When the first hanging rod 6 rotates, the rack plate 16 inside the first hanging rod 6 rotates together, and the first hanging rod 6 and the rack plate 16 inside the second hanging rod 25 are connected by the first connecting shaft 17 to ensure the stability of the first hanging rod 6 when rotating;

[0057] At the same time, through the connection of the first connecting shaft 17, when one of the rack plates 16 inside the first hanging rod 6 and the second hanging rod 25 moves up and down, the other rack plate 16 is driven to move synchronously.

[0058] like Figure 3 , Figure 4 and Figure 5As shown, the mixing assembly includes a mixing plate 24 arranged below the second hanging rod 25, the bottom end of the mixing plate 24 is fixedly connected with a fifth rotating shaft 23, the fifth rotating shaft 23 is rotatably mounted inside the dyeing box 1, the outer wall of the fifth rotating shaft 23 is installed with a second pulley group 22, the end of the second pulley group 22 away from the fifth rotating shaft 23 is installed with a second connecting shaft 21, a connecting rod 20 is embedded inside the second connecting shaft 21, the top of the connecting rod 20 is fixedly installed with a fourth rotating shaft 19, the fourth rotating shaft 19 is rotatably mounted inside another connecting plate 3, the top of the fourth rotating shaft 19 is installed with a first pulley group 18, and the end of the first pulley group 18 away from the fourth rotating shaft 19 is installed on the outer wall of the second rotating shaft 10.

[0059] Through the setting of the mixing component, when the second rotating shaft 10 rotates, the fourth rotating shaft 19 is driven to rotate through the first pulley group 18, the rotation of the fourth rotating shaft 19 drives the second connecting shaft 21 to rotate, the rotation of the second connecting shaft 21 drives the fifth rotating shaft 23 to rotate through the second pulley group 22, and the rotation of the fifth rotating shaft 23 drives the mixing plate 24 to rotate, so that the mixing plate 24 stirs the dye liquid inside the dyeing box 1, which helps to reduce the concentration gradient in the dye liquid and make the dye more evenly distributed in the dye liquid, which is convenient for subsequent dyeing.

[0060] like Figure 5 As shown, the connecting rod 20 and the second connecting shaft 21 are slidably connected.

[0061] A method for using a dyeing device for producing regenerated polyester, comprising the following steps:

[0062] S1: When the recycled polyester is dyed, the first motor 5 is first started to drive the threaded rod 4 to rotate, and the rotation of the threaded rod 4 drives the connecting plate 3 to move, so that the connecting plate 3 moves upward on the inner wall of the dyeing box 1, and the movement of the connecting plate 3 drives the movement of the cross bar 2, and the movement of the cross bar 2 drives the first hanging rod 6 and the second hanging rod 25 to move, so that the first hanging rod 6 and the second hanging rod 25 slide out of the dyeing box 1;

[0063] S2: Then one of the limit rods 13 is rotated, and the rotation of the limit rod 13 drives the rotation of the third rotating shaft 14, and the rotation of the third rotating shaft 14 drives the rotation of the third gear 15, and the rotation of the third gear 15 drives the movement of the rack plate 16, and the movement of one of the rack plates 16 drives the other rack plate 16 to move synchronously, so that the limit rods 13 at both ends of the first hanging rod 6 and the second hanging rod 25 rotate synchronously, so that the limit rod 13 is parallel to the first hanging rod 6 and the second hanging rod 25;

[0064] S3: Then, the rolled recycled polyester is put on the outer wall of the first hanging rod 6 and the second hanging rod 25, and the limiting rod 13 is rotated again so that the limiting rod 13 is perpendicular to the first hanging rod 6 or the second hanging rod 25;

[0065] S4: Finally, the first motor 5 is started again to move the first hanging rod 6 and the second hanging rod 25 into the dyeing box 1, and the regenerated polyester fiber is immersed in the dyeing liquid for dyeing;

[0066] S5: After dyeing is completed, similarly, the first hanging rod 6 and the second hanging rod 25 are moved up and slid out of the dyeing box 1, and then the second motor 11 is started to drive the second rotating shaft 10 to rotate, the rotation of the second rotating shaft 10 drives the rotation of the second gear 9, the rotation of the second gear 9 drives the rotation of the first gear 8, and the rotation of the first gear 8 drives the rotation of the first hanging rod 6, so that the regenerated polyester fiber rotates and the internal dye solution is screwed out;

[0067] S6: When the second rotating shaft 10 rotates, the fourth rotating shaft 19 is driven to rotate through the first pulley set 18, and the rotation of the fourth rotating shaft 19 drives the second connecting shaft 21 to rotate. The rotation of the second connecting shaft 21 drives the fifth rotating shaft 23 to rotate through the second pulley set 22, and the rotation of the fifth rotating shaft 23 drives the mixing plate 24 to rotate, so that the mixing plate 24 stirs the dye liquid inside the dyeing box 1 to facilitate the next dyeing;

[0068] S7: After the excess dyeing liquid inside the regenerated polyester is wrung out, the limiting rod 13 is rotated in a similar manner to make it parallel to the first hanging rod 6 and the second hanging rod 25, the regenerated polyester is taken out, and new regenerated polyester to be dyed is installed, and the above steps are repeated to perform dyeing.

[0069] 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 dyeing device for the production of regenerated polyester, comprising a dyeing box (1), characterized in that: A crossbar (2) is installed at the top of the dyeing box (1), and the crossbar (2) is connected to the dyeing box (1) via a lifting assembly. The bottom end of the crossbar (2) is rotatably connected to a first hanging rod (6) via a rotating assembly. A second hanging rod (25) is arranged at the bottom end of the first hanging rod (6), and a mixing assembly is arranged below the second hanging rod (25). The lifting assembly comprises a connecting plate (3) fixedly mounted at the bottom end of the crossbar (2), two connecting plates (3) are symmetrically arranged, and both connecting plates (3) are slidably mounted inside the dyeing box (1), and a threaded rod (4) is connected to the inner thread of one of the connecting plates (3), and a first motor (5) is mounted at the bottom end of the threaded rod (4), and the first motor (5) is arranged inside the dyeing box (1); The rotating assembly comprises a first rotating shaft (7) fixedly mounted on the top end of a first hanging rod (6); a first gear (8) is fixedly mounted on the outer wall of the first rotating shaft (7); a second gear (9) is meshingly connected to one side of the first gear (8); a second rotating shaft (10) is fixedly mounted inside the second gear (9); and a second motor (11) is mounted on the top end of the second rotating shaft (10).

2. A dyeing device for regenerated polyester production according to claim 1, characterized in that: The second hanging rod (25) is rotatably connected to the first hanging rod (6).

3. The dyeing device for regenerated polyester production according to claim 1, characterized in that: The first rotating shaft (7) is rotatably mounted inside the cross bar (2), and a coil spring (12) is mounted between the first rotating shaft (7) and the cross bar (2).

4. The dyeing device for regenerated polyester production according to claim 1, characterized in that: Limiting rods (13) are provided at both ends of the first hanging rod (6) and the second hanging rod (25).

5. A dyeing device for regenerated polyester production according to claim 4, characterized in that: The limiting rods (13) at both ends of the first hanging rod (6) and the second hanging rod (25) are fixedly connected via a third rotating shaft (14), and the third rotating shaft (14) is rotatably mounted inside the first hanging rod (6) and the second hanging rod (25).

6. The dyeing device for regenerated polyester production according to claim 1, characterized in that: A rack plate (16) is slidably mounted inside the first hanging rod (6) and the second hanging rod (25), and one side of the two rack plates (16) is meshedly connected with a third gear (15), and the third gear (15) is fixedly mounted on the outer wall of the third rotating shaft (14).

7. A dyeing device for regenerated polyester production according to claim 6, characterized in that: A first connecting shaft (17) is fixedly connected to the bottom end of one of the rack plates (16), and the first connecting shaft (17) is rotatably mounted inside the other rack plate (16).

8. The dyeing device for regenerated polyester production according to claim 1, characterized in that: The mixing assembly comprises a mixing plate (24) arranged below the second hanging rod (25); the bottom end of the mixing plate (24) is fixedly connected with a fifth rotating shaft (23); the fifth rotating shaft (23) is rotatably mounted inside the dyeing box (1); a second pulley group (22) is mounted on the outer wall of the fifth rotating shaft (23); a second connecting shaft (21) is mounted on the end of the second pulley group (22) away from the fifth rotating shaft (23); a connecting rod (20) is embedded inside the second connecting shaft (21); a fourth rotating shaft (19) is fixedly mounted on the top end of the connecting rod (20); the fourth rotating shaft (19) is rotatably mounted inside another of the connecting plates (3); a first pulley group (18) is mounted on the top end of the fourth rotating shaft (19); an end of the first pulley group (18) away from the fourth rotating shaft (19) is mounted on the outer wall of the second rotating shaft (10).

9. A dyeing device for regenerated polyester production according to claim 8, characterized in that: The connecting rod (20) and the second connecting shaft (21) are slidably connected.

10. A method for using a dyeing device for regenerated polyester production, the method being applicable to the dyeing device for regenerated polyester production as claimed in claims 1 to 9, characterized in that: The following steps are involved: S1: When the regenerated polyester is dyed, the first motor (5) is first started to drive the threaded rod (4) to rotate, and the rotation of the threaded rod (4) drives the connecting plate (3) to move, so that the connecting plate (3) moves upward on the inner wall of the dyeing box (1), and the movement of the connecting plate (3) drives the movement of the cross bar (2), and the movement of the cross bar (2) drives the movement of the first hanging rod (6) and the second hanging rod (25), so that the first hanging rod (6) and the second hanging rod (25) slide out of the dyeing box (1); S2: Then one of the limit rods (13) is rotated, the rotation of the limit rod (13) drives the rotation of the third rotating shaft (14), the rotation of the third rotating shaft (14) drives the rotation of the third gear (15), the rotation of the third gear (15) drives the movement of the rack plate (16), and the movement of one of the rack plates (16) drives the other rack plate (16) to move synchronously, so that the limit rods (13) at both ends of the first hanging rod (6) and the second hanging rod (25) rotate synchronously, so that the limit rod (13) is parallel to the first hanging rod (6) and the second hanging rod (25); S3: Then, the rolled recycled polyester is put on the outer wall of the first hanging rod (6) and the second hanging rod (25), and the limiting rod (13) is rotated again so that the limiting rod (13) is perpendicular to the first hanging rod (6) or the second hanging rod (25); S4: finally, starting the first motor (5) again to move the first hanging rod (6) and the second hanging rod (25) into the dyeing box (1), and immersing the regenerated polyester fiber in the dyeing liquid for dyeing; S5: After dyeing is completed, similarly, the first hanging rod (6) and the second hanging rod (25) are moved upward and slid out of the dyeing box (1), and then the second motor (11) is started to drive the second rotating shaft (10) to rotate, the rotation of the second rotating shaft (10) drives the rotation of the second gear (9), the rotation of the second gear (9) drives the rotation of the first gear (8), and the rotation of the first gear (8) drives the rotation of the first hanging rod (6), so that the regenerated polyester fiber rotates and the internal dye solution is squeezed out; S6: When the second rotating shaft (10) rotates, the fourth rotating shaft (19) is driven to rotate through the first belt pulley group (18), and the rotation of the fourth rotating shaft (19) drives the second connecting shaft (21) to rotate. The rotation of the second connecting shaft (21) drives the fifth rotating shaft (23) to rotate through the second belt pulley group (22), and the rotation of the fifth rotating shaft (23) drives the mixing plate (24) to rotate, so that the mixing plate (24) stirs the dyeing liquid inside the dyeing box (1) to facilitate the next dyeing; S7: After the excess dyeing liquid inside the regenerated polyester is wrung out, the limiting rod (13) is rotated in a similar manner to make it parallel to the first hanging rod (6) and the second hanging rod (25), the regenerated polyester is taken out, and new regenerated polyester to be dyed is installed, and the above steps are repeated to dye.

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