Dyeing equipment for polyester thread production

Abstract

The utility model discloses a dyeing device for polyester thread production, which comprises a feed liquid box, a front thread feeding structure mounted on the outer wall of one side of the feed liquid box and a plurality of threading rollers rotatably mounted in the feed liquid box, and the plurality of threading rollers are used for threading polyester threads in a continuous S-shaped path. The top end of the side, away from the front wire feeding structure, of the feed liquid box is fixedly provided with a hollow wire supporting disc with holes, and the inner wall of the feed liquid box above the hollow wire supporting disc with holes is provided with an eccentric liquid squeezing assembly. According to the utility model, a plurality of parallel polyester threads enter the feed liquid box in a continuous S-shaped routing manner and are dip-dyed by utilizing the front thread feeding structure and the routing roller, and the dip-dyed polyester threads pass through the eccentric liquid squeezing assembly and the hollow perforated thread supporting disc and are connected to external winding equipment; the eccentric liquid squeezing assembly squeezes out excessive dye carried on the polyester threads, and the squeezed-out part of the dye returns to the feed liquid box again through the empty thread supporting disc with the holes.

Description

Technical Field

[0001] This utility model relates to the technical field of polyester thread production equipment, specifically a dyeing device for polyester thread production. Background Technology

[0002] Dyeing equipment for polyester yarn production is crucial for dyeing polyester fibers. This type of equipment typically includes a high-temperature resistant chamber, heating system, circulation system, temperature and pressure control system, dyeing bath, and exhaust system. These components work together to make the dyeing process efficient and environmentally friendly. Specifically, the heating system heats the dyeing bath to the required temperature, enhancing dye activity; the circulation system continuously circulates the dyeing bath through pumps and pipes, ensuring uniform dye distribution; and the temperature and pressure control system monitors and adjusts the environment within the dyeing chamber in real time, ensuring dyeing occurs within the set range. The entire dyeing process includes heating, immersion, circulation, and cooling steps. Under high temperature and pressure, dye molecules gradually penetrate into the polyester fibers through diffusion and adsorption, ultimately achieving a uniform color effect.

[0003] As disclosed in patent announcement CN218910799U, a dyeing device for polyester yarn production includes a machine body and a yarn trough. The machine body has a yarn inlet and a yarn outlet on its left and right sides, respectively. A fixing rod is installed inside the machine body, and a first heating trough is fixed to the lower end of the fixing rod. A lifting rod is also installed inside the machine body, and a second heating trough is installed at the top of the lifting rod. A dyeing box is placed at the upper end of the second heating trough. The dyeing box has an inlet and an outlet on its left and right sides, respectively. It is equipped with multiple yarn feed rollers to ensure proper dyeing of the polyester yarn. The surface of the yarn feed rollers has multiple yarn grooves to facilitate the dyeing process. Multiple polyester threads are used for dyeing. However, in the above-mentioned technical solution, when dyeing polyester threads, since polyester is a synthetic fiber, it usually has strong hydrophobicity. Therefore, during the dyeing process, dye molecules need to overcome the hydrophobicity of polyester fibers in order to effectively penetrate into the fiber interior. In order to enhance the adhesion of dye, some auxiliaries, such as surfactants, are added to the dyeing solution. These auxiliaries help the dye adhere to the fiber surface. At this time, during the dyeing process, some dye will still adhere to the fiber surface due to the movement of polyester threads, liquid flow, etc., and thus be carried out of the dyeing box when it is taken out, resulting in waste of dye. Utility Model Content

[0004] The purpose of this invention is to provide a dyeing device for polyester yarn production. The front-feeding structure and the thread-carrying roller allow multiple parallel polyester yarns to enter the feed tank in a continuous S-shaped path and complete the dyeing process. After dyeing, the multiple polyester yarns pass through the eccentric extrusion assembly and the hollow perforated thread support reel and are connected to the external winding equipment. The eccentric extrusion assembly presses out excess dye carried by the polyester yarns, and the pressed-out dye returns to the feed tank through the hollow perforated thread support reel to reduce dye carryover and overflow, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dyeing equipment for polyester yarn production, comprising a liquid tank, a front-feeding structure installed on one side of the outer wall of the liquid tank, and multiple thread-carrying rollers rotatably installed inside the liquid tank. The multiple thread-carrying rollers are used to feed polyester yarn in a continuous S-shaped path. A hollow perforated thread support plate is fixed at the top of the side of the liquid tank away from the front-feeding structure, and an eccentric extrusion assembly is installed on the inner wall of the liquid tank above the hollow perforated thread support plate. A motor for driving the front-feeding structure is provided on one side of the liquid tank, and a belt drive structure for driving the eccentric extrusion assembly and rotating one of the thread-carrying rollers is provided on the other side of the liquid tank.

[0006] Preferably, the pre-feeding structure includes two roller frames installed on one side of the outer wall of the liquid tank and a main feed roller rotatably installed between the two roller frames. The motor is installed on one side of the outer wall of one of the roller frames, and the drive shaft of the motor is fixedly connected to one end of the main feed roller.

[0007] Preferably, the outer circumferential surface of the wire feeding roller is equipped with a plurality of equally spaced retaining rings along the extension direction of the central axis, and a wire support area is provided between two adjacent retaining rings.

[0008] Preferably, the bottom end of the hollow wire support reel with holes is provided with a rectangular hollow section, and the hollow wire support reel with holes is made of stainless steel.

[0009] Preferably, the eccentric extrusion assembly includes a support plate installed on the inner wall of one side of the liquid tank, a shaft seat fixed to the top of the liquid tank, a rotating shaft rotatably installed inside the shaft seat, an eccentric wheel fixed to one end of the rotating shaft surface, and guide rods slidably installed on both sides inside the support plate. A spiral frame is fixed to the top of the guide rod, the eccentric wheel is located inside the spiral frame, a connecting plate is fixed to the bottom of the guide rod, and several sponge protrusions are installed at the bottom of the connecting plate. The rotating shaft is poweredly connected to the main feed roller through a belt drive structure.

[0010] Preferably, the belt drive structure consists of a primary belt drive structure, a drive shaft, a secondary belt drive structure, and a tertiary belt drive structure. The drive shaft is rotatably mounted on one outer wall of the material tank. The primary belt drive structure is used to connect the main feed roller and the drive shaft. The secondary belt drive structure is used to connect the drive shaft and one of the feed rollers. One of the feed rollers drives the shaft to rotate through the tertiary belt drive structure.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This dyeing equipment for polyester yarn production is equipped with a structure that coordinates a motor, a front-feeding structure, a liquid tank, a thread guide roller, a hollow perforated thread support reel, and an eccentric extrusion assembly. The front-feeding structure and the thread guide roller allow multiple parallel polyester yarns to enter the liquid tank in a continuous S-shaped path and complete the dyeing process. After dyeing, the multiple polyester yarns pass through the eccentric extrusion assembly and the hollow perforated thread support reel and are connected to an external winding device. The eccentric extrusion assembly presses out excess dye carried on the polyester yarns, and the pressed-out dye flows through... The perforated thread support reel returns the yarn to the dyeing tank. The S-shaped thread routing allows the polyester yarn to maintain a longer immersion time in the dyeing solution, increasing the contact area between the dye and the fiber. This ensures uniform dye penetration on the surface and inside of the polyester yarn, reducing color difference issues during the dyeing process. The eccentric extrusion assembly effectively presses out excess dye from the polyester yarn and recycles it back to the dyeing tank via the hollow perforated thread support reel, forming a closed-loop dye return path. This process not only reduces dye waste but also effectively lowers production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0014] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0015] Figure 4 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0016] Figure 5 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0017] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle.

[0018] In the diagram: 1. Liquid tank; 2. Front-mounted feeding structure; 201. Roller frame; 202. Main feeding roller; 3. Motor; 4. Feeding roller; 401. Retaining ring; 402. Wire support area; 5. Belt drive structure; 501. First-stage belt drive structure; 502. Drive shaft; 503. Second-stage belt drive structure; 504. Third-stage belt drive structure; 6. Hollow perforated wire support plate; 601. Rectangular cutout section; 7. Eccentric extrusion assembly; 701. Support plate; 702. Shaft seat; 703. Rotating shaft; 704. Eccentric wheel; 705. Return frame; 706. Guide rod; 707. Connecting plate; 708. Sponge protrusion. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0020] Please see Figure 1-6 An embodiment of this utility model provides a dyeing equipment for polyester thread production, including a liquid tank 1, a front-feeding structure 2 installed on the outer wall of one side of the liquid tank 1, and multiple thread-carrying rollers 4 rotatably installed inside the liquid tank 1. The multiple thread-carrying rollers 4 are used to feed polyester thread in a continuous S-shaped path. A hollow perforated thread support plate 6 is fixed at the top of the side of the liquid tank 1 away from the front-feeding structure 2, and an eccentric extrusion assembly 7 is installed on the inner wall of the liquid tank 1 above the hollow perforated thread support plate 6. A rectangular hollow part 601 is provided at the bottom of the hollow perforated thread support plate 6. The hollow perforated thread support plate 6 is made of stainless steel.

[0021] A motor 3 for driving the front feeding structure 2 is provided on one side of the liquid tank 1, and a belt drive structure 5 for driving the front feeding structure 2 to drive the eccentric extrusion assembly 7 and rotating one of the feeding rollers 4 is provided on the other side of the liquid tank 1.

[0022] The pre-feeding structure 2 includes two roller frames 201 installed on one side of the outer wall of the liquid tank 1 and a main feeding roller 202 rotatably installed between the two roller frames 201. A motor 3 is installed on one side of the outer wall of one of the roller frames 201. The drive shaft of the motor 3 is fixedly connected to one end of the main feeding roller 202. The motor 3 drives the main feeding roller 202 between the two roller frames 201 to rotate. The pre-feeding structure 2, in conjunction with the external winding equipment, stably transfers the polyester thread. Through a stable thread feeding speed, the polyester thread is kept evenly distributed in the dyeing solution, reducing the risk of uneven dyeing.

[0023] Several equally spaced retaining rings 401 are installed on the outer peripheral surface of the thread roller 4 along the extension direction of the central axis. A thread-supporting area 402 is provided between two adjacent retaining rings 401. The thread-supporting area 402 is formed between two adjacent retaining rings 401. The thread-supporting area 402 is used to separate two adjacent polyester threads, thereby guiding the flow of polyester threads during the dyeing process and preventing the threads from tangling or knotting.

[0024] The eccentric extrusion assembly 7 includes a support plate 701 installed on the inner wall of one side of the liquid tank 1, a shaft seat 702 fixed at the top of the liquid tank 1, a rotating shaft 703 rotatably installed inside the shaft seat 702, an eccentric wheel 704 fixed at one end of the surface of the rotating shaft 703, and guide rods 706 slidably installed on both sides inside the support plate 701. A ring frame 705 is fixed at the top of the guide rod 706, and the eccentric wheel 704 is located inside the ring frame 705. A connecting plate 707 is fixed at the bottom of the guide rod 706, and several sponge protrusions 708 are installed at the bottom of the connecting plate 707. The sponge protrusions 708 need to be fully impregnated with dye in advance to avoid the sponge protrusions 708 printing off the dye on the polyester thread. The rotating shaft 703 is powered by the main feed roller 202 through the belt drive structure 5.

[0025] The belt drive structure 5 consists of a first-stage belt drive structure 501, a drive shaft 502, a second-stage belt drive structure 503, and a third-stage belt drive structure 504. The drive shaft 502 is rotatably mounted on one side of the outer wall of the liquid tank 1. The first-stage belt drive structure 501 is used to connect the main wire feeding roller 202 and the drive shaft 502. The second-stage belt drive structure 503 is used to connect the drive shaft 502 and one of the wire feeding rollers 4. One of the wire feeding rollers 4 drives the rotating shaft 703 to rotate through the third-stage belt drive structure 504. When the motor 3 drives the main wire feeding roller 202 to rotate, the main wire feeding roller 202 will drive one of the wire feeding rollers 4 to rotate through the first-stage belt drive structure 501, the drive shaft 502, and the second-stage belt drive structure 503, so that the wire feeding roller 4 shares the rotational power from the motor 3.

[0026] One of the thread rollers 4 drives the rotating shaft 703 and the eccentric wheel 704 to rotate through the three-stage belt drive structure 504. Then, during the rotation of the rotating shaft 703, the forming frame 705, the guide rod 706, and the connecting plate 707 are continuously forced to move up and down. The excess dye on the polyester thread is squeezed out by the sponge protrusion 708. The squeezed-out dye is returned to the liquid tank 1 through the hollow perforated thread support plate 6 and the rectangular hollow part 601.

[0027] In this embodiment, the operator first needs to accurately prepare the dye according to production requirements. The dye concentration, pH value, and other additives need to be adjusted according to the characteristics of the polyester thread. The prepared dye is then injected into the feed tank 1. Multiple polyester threads to be dyed are introduced into the feed tank 1 in parallel through the front feeding structure 2 and several thread guide rollers 4. At this time, the polyester threads are arranged in a continuous S-shape in the feed tank 1 by the thread guide rollers 4. The ends of the polyester threads pass through the hollow perforated thread support plate 6 and the eccentric extrusion assembly 7 and are connected to the external drying equipment and winding equipment. The operator starts the external drying equipment, winding equipment, and motor 3, according to the characteristics of the polyester thread. To meet the requirements of dyeing and coloring, the speed of motor 3 is controlled, thereby adjusting the flow rate of the pre-feeding structure 2 to ensure that the polyester thread maintains an appropriate flow speed in the dyeing solution and avoids uneven dyeing. During this process, the thread guide roller 4 plays a guiding and protective role, ensuring that the polyester thread enters the dyeing solution smoothly. As the polyester thread enters, the dyeing solution will coat the thread and begin the dyeing process. After dyeing, the polyester thread needs to be processed through the hollow perforated thread support plate 6 and the eccentric extrusion assembly 7. The eccentric extrusion assembly 7 presses out the excess dye from the polyester thread, and the extruded dye is returned to the feed tank through the hollow perforated thread support plate 6. The processed polyester thread is then introduced into the drying equipment and the winding equipment for further processing.

Claims

1. A dyeing device for polyester yarn production, characterized in that: The system includes a liquid tank (1), a front-feeding structure (2) installed on the outer wall of one side of the liquid tank (1), and multiple thread-carrying rollers (4) rotatably installed inside the liquid tank (1). The multiple thread-carrying rollers (4) are used to feed polyester thread in a continuous S-shaped path. A hollow perforated thread support plate (6) is fixed at the top of the side of the liquid tank (1) away from the front-feeding structure (2), and an eccentric extrusion assembly (7) is installed on the inner wall of the liquid tank (1) above the hollow perforated thread support plate (6). A motor (3) is provided on one side of the liquid tank (1) to drive the front-feeding structure (2), and a belt drive structure (5) is provided on the other side of the liquid tank (1) to drive the eccentric extrusion assembly (7) and rotate one of the thread-carrying rollers (4).

2. The dyeing equipment for polyester yarn production according to claim 1, characterized in that: The pre-feeding structure (2) includes two roller frames (201) installed on one side of the outer wall of the liquid tank (1) and a main feed roller (202) rotatably installed between the two roller frames (201). The motor (3) is installed on one side of the outer wall of one of the roller frames (201), and the drive shaft of the motor (3) is fixedly connected to one end of the main feed roller (202).

3. The dyeing equipment for polyester yarn production according to claim 1, characterized in that: The outer circumferential surface of the wire roller (4) is provided with a plurality of equally spaced retaining rings (401) along the extension direction of the central axis, and a wire support area (402) is provided between two adjacent retaining rings (401).

4. The dyeing equipment for polyester yarn production according to claim 1, characterized in that: The hollow wire support plate (6) with holes has a rectangular hollow section (601) at its bottom end. The hollow wire support plate (6) with holes is made of stainless steel.

5. The dyeing equipment for polyester yarn production according to claim 1, characterized in that: The eccentric extrusion assembly (7) includes a support plate (701) installed on the inner wall of one side of the liquid tank (1), a bearing seat (702) fixed at the top of the liquid tank (1), a rotating shaft (703) rotatably installed inside the bearing seat (702), an eccentric wheel (704) fixed at one end of the surface of the rotating shaft (703), and guide rods (706) slidably installed on both sides inside the support plate (701). A ring frame (705) is fixed at the top of the guide rod (706), the eccentric wheel (704) is located inside the ring frame (705), a connecting plate (707) is fixed at the bottom of the guide rod (706), and several sponge protrusions (708) are installed at the bottom of the connecting plate (707). The rotating shaft (703) is powered by the main feed roller (202) through a belt drive structure (5).

6. The dyeing equipment for polyester yarn production according to claim 5, characterized in that: The belt drive structure (5) consists of a first-stage belt drive structure (501), a drive shaft (502), a second-stage belt drive structure (503), and a third-stage belt drive structure (504). The drive shaft (502) is rotatably mounted on one side of the outer wall of the liquid tank (1). The first-stage belt drive structure (501) is used to connect the main feed roller (202) and the drive shaft (502). The second-stage belt drive structure (503) is used to connect the drive shaft (502) and one of the feed rollers (4). One of the feed rollers (4) drives the rotating shaft (703) to rotate through the third-stage belt drive structure (504).

Images