A dip dyeing device for polyester fabric

By automatically adjusting the position of the polyester fabric using an electric push rod to drive rubber rollers and stainless steel rollers, the problem of low efficiency and uneven dyeing during the polyester fabric dyeing process is solved, achieving a highly efficient and uniform dyeing effect.

CN224337926UActive Publication Date: 2026-06-09JIAXING CITY DONGJUN WEAVING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIAXING CITY DONGJUN WEAVING CO LTD
Filing Date
2025-09-05
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

In the current polyester fabric dyeing process, manual operation is inefficient and easily leads to uneven dyeing and a high defect rate.

Method used

Electric push rods drive rubber rollers and stainless steel rollers to automatically fix and adjust the fabric position. Combined with electric push rods driving U-shaped frames and rollers, the fabric is evenly distributed. Electric heaters are used to control the dye bath temperature.

Benefits of technology

It achieves automated operation, improves dyeing efficiency, avoids fabric shift and wrinkles, ensures dyeing uniformity, and is suitable for fabrics of different lengths.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224337926U_ABST
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Abstract

The utility model discloses a kind of dip-dyeing devices for polyester fabric, including dip-dyeing frame, the top of dip-dyeing frame is placed with lifting plate, the top of lifting plate is fixedly connected with two lifting rings, the outer wall of two lifting rings is fixedly connected with steel wire rope, the bottom of lifting plate is fixedly connected with two side plates, the top of lifting plate is fixedly connected with two first electric push rods, the bottom of two first electric push rod output ends is fixedly connected with U-shaped plate.The utility model drives rubber roller fixed polyester fabric body both ends by first electric push rod, stainless steel roller axle is driven to adjust fabric up and down arrangement by second electric push rod, without manual placement fabric, both save manpower, improve efficiency, and can avoid that fabric is deviated, wrinkle due to improper operation, guarantee fabric position stable;While flexible adaptation different length's polyester fabric body, ensure that it is evenly stressed when dipping, fully contacts dye liquor.
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Description

Technical Field

[0001] This utility model relates to the field of fabric processing technology, and in particular to a dyeing apparatus for polyester fabrics. Background Technology

[0002] Polyester fabric immersion dyeing is a common and basic method in fabric dyeing processes. Specifically, it refers to immersing the polyester fabric completely in a pre-mixed device containing a specific dye. This is the most commonly used type of dye in polyester dyeing. Through the synergy of physical and chemical actions, the dye gradually adheres to the fiber surface and further penetrates into the fiber interior, ultimately achieving uniform coloring of the polyester fabric.

[0003] In existing technologies, most rely on manual operation to place the fabric in the dyeing area, which is not only time-consuming and labor-intensive, but also prone to problems such as fabric displacement and wrinkle accumulation in the dyeing tank due to improper operation, resulting in uneven dyeing and increased defect rate. Therefore, we propose a dyeing device for polyester fabric to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dyeing apparatus for polyester fabrics.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A dyeing apparatus for polyester fabric includes a dyeing frame, a lifting plate placed on top of the dyeing frame, two lifting rings fixedly connected to the top of the lifting plate, steel wire ropes fixedly connected to the outer walls of the two lifting rings, two side plates fixedly connected to the bottom of the lifting plate, two first electric push rods fixedly connected to the top of the lifting plate, U-shaped plates fixedly connected to the bottom of the output ends of the two first electric push rods, first rubber rollers fixedly connected inside the two U-shaped plates, two second rubber rollers fixedly connected between the two side plates, and multiple first stainless steel rollers rotatably connected between the two side plates. A dyeing assembly is provided inside the dyeing frame.

[0007] Preferably, the dyeing assembly includes a second electric push rod, the top of the lifting plate is fixedly connected to the outer wall of the second electric push rod, a U-shaped frame is fixedly connected to the bottom of the output end of the second electric push rod, a plurality of second stainless steel rollers are rotatably connected inside the U-shaped frame, and two vertical rods are fixedly connected to the top of the U-shaped frame, so as to dye the polyester fabric body by setting the dyeing assembly.

[0008] Preferably, the top of the hoisting plate has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two first electric push rods, so that the U-shaped plate can be moved up and down by setting the first electric push rods.

[0009] Preferably, the top of the hoisting plate has a circular hole, and the inner wall of the circular hole is slidably connected to the outer wall of the output end of the second electric push rod. The U-shaped frame is moved up and down by setting the second electric push rod.

[0010] Preferably, polyester fabric bodies are placed on the outer walls of the first stainless steel roller and the second stainless steel roller.

[0011] Preferably, the outer wall of the hoisting plate has two through holes, and the inner walls of the two through holes are slidably connected to the outer walls of the two vertical rods respectively.

[0012] Preferably, the outer wall of the dyeing frame is fixedly connected to a drain pipe and a liquid inlet pipe, and an electronic valve is fixedly installed on the outer wall of both the drain pipe and the liquid inlet pipe. Two electric heaters are fixedly embedded inside the dyeing frame, and the electronic valves control the opening and closing of the drain pipe and the liquid inlet pipe.

[0013] Compared with the prior art, the advantages of this utility model are:

[0014] This solution uses a first electric push rod to drive rubber rollers to fix both ends of the polyester fabric body, and a second electric push rod to drive stainless steel rollers to adjust the vertical arrangement of the fabric. There is no need for manual placement of the fabric, which saves manpower, improves efficiency, and avoids fabric displacement and wrinkles caused by improper operation, ensuring the stability of the fabric position. At the same time, it can flexibly adapt to polyester fabric bodies of different lengths, ensuring that they are evenly stressed and fully contacted with the dye liquor during dyeing. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a cross-sectional structural diagram of a dyeing apparatus for polyester fabric proposed in this utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of a dyeing apparatus for polyester fabric proposed in this utility model.

[0018] Figure 3 This is a partial three-dimensional structural diagram of a dyeing apparatus for polyester fabric proposed in this utility model.

[0019] In the diagram: 1. Dyeing frame; 2. Lifting plate; 3. Lifting ring; 4. Steel wire rope; 5. Side plate; 6. First electric push rod; 7. U-shaped plate; 8. First rubber roller; 9. Second rubber roller; 10. First stainless steel roller; 11. Second electric push rod; 12. U-shaped frame; 13. Second stainless steel roller; 14. Polyester fabric body; 15. Vertical rod; 16. Drain pipe; 17. Inlet pipe; 18. Electronic valve; 19. Electric heater. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Depend on Figures 1-3 As shown, a dyeing apparatus for polyester fabric is disclosed, including a dyeing frame 1. A lifting plate 2 is placed on the top of the dyeing frame 1. Two lifting rings 3 are fixedly connected to the top of the lifting plate 2. Steel wire ropes 4 are fixedly connected to the outer walls of the two lifting rings 3. The lifting plate 2, in cooperation with the steel wire ropes 4 and the lifting rings 3, realizes the lifting and lowering of itself and the polyester fabric body 14 it carries, providing support for the polyester fabric body 14 to enter and exit the dyeing frame 1. The two steel wire ropes 4 are fixed to the lifting end of an existing crane, and the crane can drive the lifting plate 2 to move.

[0022] The bottom of the lifting plate 2 is fixedly connected to two side plates 5. The two side plates 5 play a certain role in limiting the polyester fabric body 14 on both sides, so as to prevent the polyester fabric body 14 from slipping off the edge during the processing.

[0023] Two first electric push rods 6 are fixedly connected to the top of the lifting plate 2. Two sliding holes are opened on the top of the lifting plate 2. The inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two first electric push rods 6 respectively. U-shaped plates 7 are fixedly connected to the bottom of the output ends of the two first electric push rods 6.

[0024] Both U-shaped plates 7 are fixedly connected to the inside of a first rubber roller 8, and two second rubber rollers 9 are fixedly connected between the two side plates 5. The first rubber roller 8 and the second rubber roller 9 work together to fix the two ends of the polyester fabric body 14. The elasticity of the rubber material can ensure a firm fixation and prevent the polyester fabric body 14 from shifting during dyeing, while also reducing damage to the surface of the polyester fabric body 14. For the dyeing of the extrusion surfaces at both ends of the polyester fabric body 14, the dye solution penetrates after heating. Multiple first stainless steel rollers 10 are rotatably connected between the two side plates 5 through an existing T-shaped shaft.

[0025] The dyeing frame 1 is equipped with a dyeing assembly inside. The dyeing assembly includes a second electric push rod 11. A circular hole is opened on the top of the hanging plate 2. The inner wall of the circular hole is slidably connected to the outer wall of the output end of the second electric push rod 11. The top of the hanging plate 2 is fixedly connected to the outer wall of the second electric push rod 11. A U-shaped frame 12 is fixedly connected to the bottom of the output end of the second electric push rod 11.

[0026] The U-shaped frame 12 has multiple second stainless steel rollers 13 rotatably connected inside via existing T-shaped shafts. The outer walls of the first stainless steel roller 10 and the second stainless steel rollers 13 are used to place the polyester fabric body 14. The second stainless steel rollers 13 and the first stainless steel rollers 10 cooperate to support the middle part of the polyester fabric body 14. The second electric push rod 11 drives it to rise, which can pull the polyester fabric body 14 to achieve a staggered arrangement, so that the polyester fabric body 14 is more evenly spread out, which facilitates full contact with the dye liquor and improves the dyeing effect. The structure in contact with the dye liquor inside the dyeing frame 1 is made of stainless steel.

[0027] Two vertical rods 15 are fixedly connected to the top of the U-shaped frame 12. The vertical rods 15 play a guiding role during the lifting and lowering of the U-shaped frame 12, limiting the movement direction of the U-shaped frame 12 and preventing it from deviating or swaying during lifting and lowering. Two through holes are opened on the outer wall of the hoisting plate 2. The inner walls of the two through holes are slidably connected to the outer walls of the two vertical rods 15 respectively. The outer wall of the dyeing frame 1 is fixedly connected to the drain pipe 16 and the inlet pipe 17. Electronic valves 18 are fixedly installed on the outer walls of the drain pipe 16 and the inlet pipe 17. Two electric heaters 19 are fixedly embedded inside the dyeing frame 1. Existing non-contact temperature sensors (HE-155) can be added inside the dyeing frame 1.

[0028] Working principle: In use, the lifting end of the existing overhead crane (standard model) is fixed to the top of the two steel wire ropes 4. The crane drives the two steel wire ropes 4 to lift and lower, thereby lifting the lifting plate 2. After the lifting plate 2 rises, the two ends of the polyester fabric body 14 are positioned between the two sets of first rubber rollers 8 and second rubber rollers 9. The two first electric push rods 6 rotate, driving the two U-shaped plates 7 to move downward. The downward movement of the two U-shaped plates 7 drives the two first rubber rollers 8 to move downward, which, together with the two second rubber rollers 9, fixes the two ends of the polyester fabric body 14. The middle part of the polyester fabric body 14 is located on multiple first stainless steel rollers. Between 10 and multiple second stainless steel rollers 13, the second electric push rod 11 drives the U-shaped frame 12 to rise. The rise of the U-shaped frame 12 drives the multiple second stainless steel rollers 13 to rise, thereby pulling the polyester fabric to be arranged in a staggered manner, which helps to support polyester fabrics of different lengths and facilitates subsequent dyeing. The dye liquor is transported through the existing pump body. The output end of the pump body is connected to the inlet pipe 17, and then enters the dyeing frame 1 through the inlet pipe 17. The lifting plate 2 is moved downward by the crane so that the lifting plate 2 covers the top of the dyeing frame 1, while the polyester fabric body 14 is located in the dye liquor. The electric heater 19 operates to heat the dye liquor.

[0029] It should be noted that, in actual use, an existing PLC controller can be added. The PLC controller is electrically connected to the first electric push rod 6, the second electric push rod 11, the electronic valve 18, and the electric heater 19 to facilitate overall control. The specific data analysis and processing involved to further realize the control function are methods that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that can be achieved by this hardware structure improvement in conjunction with common knowledge.

[0030] All standard parts used in this utility model can be purchased from the market. Irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. Furthermore, the structure and principle of the components known to those skilled in the art can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0031] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dyeing apparatus for polyester fabrics, comprising a dyeing frame (1), characterized in that, The top of the dyeing frame (1) is equipped with a lifting plate (2). Two lifting rings (3) are fixedly connected to the top of the lifting plate (2). Steel wire ropes (4) are fixedly connected to the outer walls of the two lifting rings (3). Two side plates (5) are fixedly connected to the bottom of the lifting plate (2). Two first electric push rods (6) are fixedly connected to the top of the lifting plate (2). U-shaped plates (7) are fixedly connected to the bottom of the output ends of the two first electric push rods (6). First rubber rollers (8) are fixedly connected inside the two U-shaped plates (7). Two second rubber rollers (9) are fixedly connected between the two side plates (5). Multiple first stainless steel rollers (10) are rotatably connected between the two side plates (5). The dyeing frame (1) is equipped with a dyeing assembly inside.

2. The dyeing apparatus for polyester fabric according to claim 1, characterized in that, The dyeing assembly includes a second electric push rod (11), the top of the lifting plate (2) is fixedly connected to the outer wall of the second electric push rod (11), a U-shaped frame (12) is fixedly connected to the bottom of the output end of the second electric push rod (11), a plurality of second stainless steel rollers (13) are rotatably connected inside the U-shaped frame (12), and two vertical rods (15) are fixedly connected to the top of the U-shaped frame (12).

3. The dyeing apparatus for polyester fabric according to claim 1, characterized in that, The top of the hoisting plate (2) has two sliding holes, and the inner walls of the two sliding holes are slidably connected to the outer walls of the output ends of the two first electric push rods (6).

4. The dyeing apparatus for polyester fabric according to claim 2, characterized in that, The top of the hoisting plate (2) has a circular hole, and the inner wall of the circular hole is slidably connected to the outer wall of the output end of the second electric push rod (11).

5. The dyeing apparatus for polyester fabric according to claim 2, characterized in that, Polyester fabric body (14) is placed on the outer wall of the first stainless steel roller (10) and the second stainless steel roller (13).

6. The dyeing apparatus for polyester fabric according to claim 2, characterized in that, The outer wall of the hoisting plate (2) has two through holes, and the inner walls of the two through holes are slidably connected to the outer walls of the two vertical rods (15).

7. The dyeing apparatus for polyester fabric according to claim 1, characterized in that, The outer wall of the dyeing frame (1) is fixedly connected to the drain pipe (16) and the inlet pipe (17). The outer walls of the drain pipe (16) and the inlet pipe (17) are both fixedly equipped with electronic valves (18). The interior of the dyeing frame (1) is fixedly embedded with two electric heaters (19).