Environment-friendly non-woven fabric dip dyeing equipment and production process thereof

Abstract

The invention discloses environment-friendly non-woven fabric dip dyeing equipment and a production process thereof, and relates to the technical field of non-woven fabric dip dyeing, the environment-friendly non-woven fabric dip dyeing equipment comprises a machine table, a feeding roller rotationally installed at the top of the machine table and auxiliary rollers distributed below the feeding roller, a dyeing box is arranged at the bottom of the machine table, and a regulation and control mechanism is arranged in the dyeing box; the regulation and control mechanism comprises a regulation and control plate slidably distributed in the dyeing box, the regulation and control plate divides the interior of the dyeing box into a first cavity and a second cavity which are the same in capacity, sliding grooves are symmetrically formed in the two sides of the regulation and control plate, and control rollers are slidably mounted in each pair of sliding grooves. Back plates are symmetrically installed on the two sides of the inner wall of the dyeing box, and connecting rods are rotationally connected between the back plates and the control rollers. The environment-friendly non-woven fabric dip dyeing equipment and the production process thereof have the effects of continuous operation, high dip dyeing efficiency and uniformity.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric dyeing technology, and in particular to an environmentally friendly nonwoven fabric dyeing equipment and its production process. Background Technology

[0002] Impregnated nonwoven fabric is a nonwoven material made from polyester fiber as the main raw material through processes such as web forming, reinforcement, impregnation, drying, and roll cutting. It can be divided into two categories: saturated impregnated nonwoven fabric and foam impregnated nonwoven fabric. Most existing nonwoven fabric continuous impregnation equipment uses a single long impregnation tank in conjunction with continuous liquid replenishment for production.

[0003] However, in practical applications of this processing technology, although the back-end continuously replenishes the dye, the newly injected high-concentration dye solution, once it enters the tank, cannot be completely mixed with the existing dye solution in a very short time by relying on natural diffusion or simple circulation and stirring. When the fabric passes through continuously, it is very easy to be contaminated with dye solutions of uneven mixing of old and new solutions with local concentrations that are too high or too low, resulting in irregular momentary color spots or horizontal stripe color differences on the fabric surface. Although existing technologies have tried various improvement schemes such as external mixing tanks, multi-point application of dye solution, and zone isolation, none of them have been able to fundamentally solve the problem. As long as replenishment of dye solution and dyeing are carried out simultaneously in the same area, the fabric will inevitably face the risk of being contaminated with unevenly mixed dye solution. Summary of the Invention

[0004] This invention discloses an environmentally friendly nonwoven fabric dyeing equipment and its production process, aiming to solve the technical problem in existing nonwoven fabric dyeing technology where replenishing the dye and dyeing are carried out simultaneously in the same area, which leads to the fabric being contaminated with an unevenly mixed dye solution.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An environmentally friendly nonwoven fabric dyeing equipment includes a machine base, a feeding roller rotatably mounted on the top of the machine base, and auxiliary rollers distributed below the feeding roller. A dyeing box is provided at the bottom of the machine base, and an adjustment mechanism is provided inside the dyeing box. The control mechanism includes a control plate that slides inside the dyeing box, dividing the interior of the dyeing box into a first chamber and a second chamber of equal capacity. Both the first chamber and the second chamber are filled with an equal amount of dyeing solution. The nonwoven fabric to be processed only comes into contact with the dyeing solution in one of the first chambers or the second chamber at a time. The first chamber and the second chamber switch between an "immersion zone" and a "waiting zone". The control plate has symmetrical sliding grooves on both sides, and a control roller is slidably installed inside each pair of sliding grooves. Back plates are symmetrically installed on both sides of the inner wall of the dyeing box, and a connecting rod rotatably connects the back plates and the control rollers.

[0006] By adding a control mechanism to the existing nonwoven fabric dyeing technology and equipment, the dyeing box is divided into a multi-dyeing zone structure with the first and second chambers as the main components. The control mechanism, combined with the unique distribution of the nonwoven fabric, ensures that the nonwoven fabric alternates contact with the first and second chambers, thus switching between the "dyeing zone" and the "waiting zone" between the first and second chambers. Through "dynamic isolation + time staggering," the fabric dyeing and dye liquor replenishment are completely separated in time and space. The fabric only ever comes into contact with fully mixed and stable dye liquor, fundamentally eliminating the possibility of contamination with unevenly mixed dye liquor. Although the control mechanism moves periodically, the fabric operates continuously without interruption or tension fluctuations, ensuring unaffected production efficiency. Compared to a simple multi-chamber alternating dyeing scheme, this scheme only requires adding a movable control mechanism and control system to a single chamber, resulting in a compact structure, small footprint, and low modification cost.

[0007] In a preferred embodiment, baffles are symmetrically installed on both sides of the bottom of the control plate. The baffles are distributed in a V-shape. Several rows of baffles are evenly distributed horizontally through the interior of the baffles. A pair of liquid inlet pipes are connected through the outside of the dyeing box. Each liquid inlet pipe is connected to the first chamber and the second chamber respectively. At the same time, the liquid inlet pipes and the baffles are symmetrically distributed horizontally.

[0008] By adding a V-shaped baffle structure with built-in turbulence ports to the control plate, and with the baffles symmetrically distributed horizontally directly and in the inlet pipe, the mixing efficiency of the new and old solutions is greatly improved by utilizing the compression of the dyeing solution when the control plate moves horizontally, combined with the turbulence effect of the baffles, thus improving the dyeing efficiency of the equipment for nonwoven fabrics.

[0009] In a preferred embodiment, the control plate has a through opening in the middle. The nonwoven fabric to be dyed is coiled around the outside of the feeding roller, the auxiliary roller and the control roller in sequence, and then passes through the inside of the through opening to the other side. A clamping roller is rotatably installed on each side of the inner wall of the through opening. The clamping roller and the nonwoven fabric passing through the through opening are in pressure contact.

[0010] By incorporating a centrally located through-hole structure with built-in extrusion rollers, the nonwoven fabric passing through the equipment is shaped into a W-shape. This, in turn, matches the operation of the control plate, causing the nonwoven fabric to alternately contact the first and second chambers, thus maintaining the rationality of the equipment's operation.

[0011] A fabric production process for an environmentally friendly nonwoven fabric dyeing equipment includes the following steps; S1: The worker sequentially winds the nonwoven fabric to be dyed out from the outside of the feeding roller, the auxiliary roller and the control roller, while adding the same volume of dyeing liquid into the first chamber and the second chamber through an external pump. At this time, the control plate is in the middle position between the first chamber and the second chamber, and the nonwoven fabric hanging in a W shape is located above the first chamber and the second chamber, without contacting the dyeing liquid. S2: Taking the figure as an example, at this time, the worker starts the entire equipment, and the control plate moves slowly towards the first chamber. At the same time, the connecting rod is used to drive the control roller, so that the control roller moves along the inside of the sliding groove. This causes the control roller above the first chamber to move down, while the control roller above the second chamber moves up. This presses down the left end of the W-shaped nonwoven fabric and lifts the right end with traction, thereby causing the nonwoven fabric to be embedded in the dyeing liquid inside the first chamber. S3: The external traction device connected to the nonwoven fabric starts to operate, driving the nonwoven fabric to move slowly and continuously being dyed by the dyeing liquid inside the first chamber. S4: When the detection component located inside the first chamber detects that the concentration and volume of the dyeing solution inside the first chamber have decreased to a set threshold, the system controls the control plate to move slowly toward the second chamber, causing the two control rollers to move in the opposite direction, thereby driving the right end of the nonwoven fabric hanging in a W shape to be pressed down and the left end to be pulled up, thereby causing the nonwoven fabric to be inserted into the dyeing solution inside the second chamber; S5: Simultaneously, the pump connected to the outside of the first chamber starts to run and replenishes the inside of the first chamber with an equal volume of mother liquor. This process is repeated to complete the alternating impregnation of the nonwoven fabric.

[0012] As can be seen from the above, the environmentally friendly nonwoven fabric dyeing equipment and its production process provided by the present invention have the following technical effects.

[0013] By adding a control mechanism to the existing nonwoven fabric dyeing technology and equipment, the dyeing box is divided into a multi-dyeing zone structure with the first and second chambers as the main components. The reciprocating movement of the control plate is used to match the special distribution of the nonwoven fabric, so that the nonwoven fabric comes into contact with the first and second chambers alternately. This causes the first and second chambers to switch back and forth between the "dyeing zone" and the "waiting zone", thus achieving a variety of effects. Firstly, through "dynamic isolation + time staggered" technology, the fabric immersion and dye replenishment are completely separated in time and space. The fabric will only ever come into contact with dye that has been fully mixed and has been left to stand for a long time to stabilize, which fundamentally eliminates the possibility of being contaminated by unevenly mixed dye. Compared with all existing technologies, this is a breakthrough in principle.

[0014] Secondly, under the condition that the control mechanism moves periodically, the fabric runs continuously without interruption or tension fluctuation, and the production efficiency is not affected. Moreover, compared with the simple multi-box alternating dyeing scheme, this scheme only requires the addition of a movable control mechanism and control system to a single box, which is compact, occupies little space, and has low modification costs.

[0015] Thirdly, based on the control plate, a turbulence plate structure with a V-shaped distribution and built-in turbulence port is further set. At the same time, the turbulence plate is directly and symmetrically distributed with the liquid inlet pipe in the horizontal direction. The periodic movement of the control plate is used to cooperate with the turbulence plate to improve the mixing efficiency of the new and old solutions, thereby improving the dyeing efficiency of the equipment for non-woven fabrics. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention.

[0017] Figure 2 This is a schematic diagram of the machine tool structure proposed in this invention.

[0018] Figure 3 This is an exploded view of the top structure of the machine tool proposed in this invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the machine tool proposed in this invention.

[0020] Figure 5 This is a schematic diagram of the control mechanism structure proposed in this invention.

[0021] Figure 6 This is a schematic diagram of the initial state of the device proposed in this invention.

[0022] Figure 7 This is a schematic diagram of the operating status of the device proposed in this invention.

[0023] Figure 8 The present invention proposes Figure 6 Enlarged view of the structure at point A in the middle.

[0024] In the diagram: 1. Machine base; 2. Feeding roller; 3. Auxiliary roller; 301. Rotating arm; 4. Dyeing box; 401. First chamber; 402. Second chamber; 5. Control mechanism; 501. Control plate; 502. Electrically controlled track; 503. Sliding groove; 504. Control roller; 505. Back plate; 5051. Reinforcing component; 506. Connecting rod; 507. Through port; 5071. Clamping roller; 508. Baffle plate; 5081. Baffle port; 6. Liquid inlet pipe. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] The environmentally friendly nonwoven fabric impregnation and dyeing equipment and its production process disclosed in this invention are mainly applied to scenarios involving the impregnation and dyeing of nonwoven fabrics.

[0027] Reference Figures 1 to 8 An environmentally friendly nonwoven fabric impregnation and dyeing equipment includes a machine base 1, a feeding roller 2 rotatably installed on the top of the machine base 1, and auxiliary rollers 3 distributed below the feeding roller 2. A dyeing box 4 is provided at the bottom of the machine base 1, and an adjustment mechanism 5 is provided inside the dyeing box 4. The control mechanism 5 includes a control plate 501 that slides inside the dyeing box 4. The control plate 501 divides the interior of the dyeing box 4 into a first chamber 401 and a second chamber 402 of equal capacity. Both the first chamber 401 and the second chamber 402 are filled with the same amount of dyeing solution. The nonwoven fabric to be processed only comes into contact with the dyeing solution in one of the first chamber 401 and the second chamber 402 at a time. The first chamber 401 and the second chamber 402 switch between the "dyeing zone" and the "waiting zone". Sliding grooves 503 are symmetrically opened on both sides of the control plate 501. A control roller 504 is slidably installed inside each pair of sliding grooves 503. Back plates 505 are symmetrically installed on both sides of the inner wall of the dyeing box 4. A connecting rod 506 is rotatably connected between the back plate 505 and the control roller 504.

[0028] In this embodiment: the worker sequentially winds the nonwoven fabric to be dyed out from the outside of the feeding roller 2, auxiliary roller 3, and control roller 504. Simultaneously, an external pump adds the same volume of dyeing solution to the first chamber 401 and the second chamber 402. At this time, the control plate 501 is positioned in the middle between the first chamber 401 and the second chamber 402. The W-shaped nonwoven fabric hangs above the first chamber 401 and the second chamber 402, without contacting the dyeing solution. Figure 7For example, when the worker starts the entire equipment, the control plate 501 slowly moves towards the first chamber 401. Simultaneously, the connecting rod 506 rigidly drives the control roller 504, causing it to move along the inside of the sliding groove 503. This causes the control roller 504 above the first chamber 401 to move downwards, while the control roller 504 above the second chamber 402 moves upwards. This presses down the left end of the W-shaped nonwoven fabric and lifts the right end, causing the nonwoven fabric to be embedded in the dyeing solution inside the first chamber 401. Then, the external traction device connected to the nonwoven fabric starts operating, slowly moving the nonwoven fabric and continuously receiving traction from the first chamber 401. After the dyeing process in the first chamber 401 continues for a set time, the detection component inside the first chamber 401 detects that the concentration and volume of the dyeing solution inside the first chamber 401 have decreased to a set threshold. At this time, the system control and adjustment plate 501 slowly moves towards the second chamber 402, causing the two control rollers 504 to move in the opposite direction. This causes the right end of the nonwoven fabric, which is hanging in a W shape, to be pressed down and the left end to be lifted by traction, thus causing the nonwoven fabric to be inserted into the dyeing solution inside the second chamber 402. At the same time, the pump connected to the outside of the first chamber 401 starts to run and replenishes the mother liquor of the same volume into the first chamber 401. This process is repeated to complete the alternating dyeing of the nonwoven fabric.

[0029] Each auxiliary roller 3 is rotatably connected to the top of the machine base 1 via a pair of rotating arms 301. The placement angle of the auxiliary roller 3 is adjusted by rotating the rotating arms 301. A reinforcement member 5051 is fixedly installed on the side of each back plate 505, and the connection strength with the dyeing box 4 is reinforced by the reinforcement member 5051.

[0030] Specifically, the control plate 501 has a through-hole 507 in the middle. The nonwoven fabric to be dyed is coiled around the outside of the feeding roller 2, the auxiliary roller 3 and the control roller 504 in sequence, and then passes through the inside of the through-hole 507 to the other side. A clamping roller 5071 is rotatably installed on both sides of the inner wall of the through-hole 507. The clamping roller 5071 and the nonwoven fabric passing through the through-hole 507 are squeezed and contacted, causing the nonwoven fabric to fall in a W shape, thereby adapting to the alternating operation of the first chamber 401 and the second chamber 402.

[0031] Reference Figure 2 and Figure 5 In a preferred embodiment, baffles 508 are symmetrically installed on both sides of the bottom of the control plate 501. The baffles 508 are distributed in a V-shape. Several rows of baffles 5081 are evenly distributed in the horizontal direction through the interior of the baffles 508. A pair of liquid inlet pipes 6 are connected through the outside of the dyeing box 4. Each liquid inlet pipe 6 is connected to the first chamber 401 and the second chamber 402 respectively. At the same time, the liquid inlet pipes 6 and the baffles 508 are symmetrically distributed in the horizontal direction.

[0032] When the control plate 501 moves slowly along the inside of the first chamber 401 and the second chamber 402, it will drive the baffle plate 508 to move synchronously. The moving baffle plate 508 will generate a squeezing turbulent flow of the impregnation liquid through its own V-shaped structure and the baffle port 5081. At the same time, the liquid inlet pipe 6 and the baffle plate 508 are symmetrically distributed in the horizontal direction. The new impregnation liquid introduced into the first chamber 401 and the second chamber 402 through the liquid inlet pipe 6 will be directly disturbed by the baffle plate 508, thus mixing better with the old liquid.

[0033] Furthermore, the dyeing box 4 has symmetrically arranged electrical control rails 502 on both sides of the interior, which drive the control plate 501. The control plate 501 is mounted on the top of the electrical control rail 502, and the entire control plate 501 moves slowly through the electrical control rail 502.

[0034] Working principle: During use, the worker sequentially winds the nonwoven fabric to be dyed out from the outside of the feeding roller 2, auxiliary roller 3, control roller 504, and opening 507, causing the middle of the nonwoven fabric to form a W-shaped drop structure. The specific structure is shown in the attached figure. Figure 6 As shown, simultaneously, an external pump adds the same volume of dyeing solution to both the first chamber 401 and the second chamber 402. At this time, the control plate 501 is positioned centrally between the first chamber 401 and the second chamber 402. A W-shaped, hanging nonwoven fabric is positioned above the first chamber 401 and the second chamber 402, without contacting the dyeing solution. Figure 7For example, when the worker starts the entire equipment, the electrically controlled track 502 drives the control plate 501 to move slowly towards the first chamber 401. At the same time, the connecting rod 506 rigidly drives the control roller 504, causing the control roller 504 to move along the inside of the sliding groove 503. This causes the control roller 504 above the first chamber 401 to move downwards, while the control roller 504 above the second chamber 402 moves upwards. This presses down the left end of the W-shaped nonwoven fabric and lifts the right end under traction, causing the nonwoven fabric to be embedded in the dyeing solution inside the first chamber 401. Then, the external traction device connected to the nonwoven fabric starts to operate, driving the nonwoven fabric to move slowly and continuously under the influence of the first chamber. After the dyeing process in the internal dyeing solution of chamber 401 continues for a set time, the detection component located inside the first chamber 401 detects that the concentration and volume of the dyeing solution inside the first chamber 401 have decreased to a set threshold. At this time, the system control and adjustment plate 501 slowly moves towards the second chamber 402, causing the two control rollers 504 to move in the reverse direction. This causes the right end of the nonwoven fabric, which is hanging in a W shape, to be pressed down and the left end to be lifted by traction, thus causing the nonwoven fabric to be inserted into the dyeing solution inside the second chamber 402. At the same time, the pump connected to the outside of the first chamber 401 starts to run and replenishes the mother liquor of the same volume into the first chamber 401. This process is repeated to complete the alternating dyeing of the nonwoven fabric.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An environmentally friendly nonwoven fabric dyeing equipment, comprising a machine base (1), a feeding roller (2) rotatably mounted on the top of the machine base (1), and auxiliary rollers (3) distributed below the feeding roller (2), characterized in that, The bottom of the machine (1) is provided with a dyeing box (4), and the inside of the dyeing box (4) is provided with a control mechanism (5). The control mechanism (5) includes a control plate (501) that slides inside the dyeing box (4). The control plate (501) divides the interior of the dyeing box (4) into a first chamber (401) and a second chamber (402) of equal capacity. Both the first chamber (401) and the second chamber (402) are filled with the same amount of dyeing solution. The nonwoven fabric to be processed is only processed in one of the first chamber (401) and the second chamber (402) at a time. The first chamber (401) and the second chamber (402) switch between the "dyeing zone" and the "waiting zone". The control plate (501) has symmetrical sliding grooves (503) on both sides. Each pair of sliding grooves (503) has a control roller (504) slidably installed inside. The inner wall of the dye box (4) has symmetrical back plates (505) installed on both sides. The back plate (505) and the control roller (504) are rotatably connected by a connecting rod (506).

2. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 1, characterized in that, The bottom sides of the control plate (501) are symmetrically equipped with spoilers (508), and the spoilers (508) are distributed in a V-shaped structure.

3. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 2, characterized in that, The interior of the spoiler (508) has several rows of spoiler openings (5081) evenly distributed in the horizontal direction.

4. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 2, characterized in that, A pair of liquid inlet pipes (6) are connected through the outside of the dyeing box (4). Each liquid inlet pipe (6) is connected to the first chamber (401) and the second chamber (402) respectively. At the same time, the liquid inlet pipes (6) and the baffle plate (508) are symmetrically distributed in the horizontal direction.

5. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 1, characterized in that, The control plate (501) has a through opening (507) in the middle. The nonwoven fabric to be dyed is coiled around the outside of the feeding roller (2), the auxiliary roller (3) and the control roller (504) in sequence, and then passed through the inside of the through opening (507) to the other side.

6. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 5, characterized in that, A clamping roller (5071) is rotatably installed on each side of the inner wall of the opening (507), and the clamping roller (5071) and the non-woven fabric that passes through the opening (507) are in extrusion contact.

7. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 1, characterized in that, Each of the back plates (505) has a reinforcement member (5051) fixedly installed on its side, and the connection strength with the dye box (4) is reinforced by the reinforcement member (5051).

8. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 1, characterized in that, Each of the auxiliary rollers (3) is rotatably connected to the top of the machine base (1) via a pair of rotating arms (301), and the placement angle of the auxiliary rollers (3) is adjusted by rotating the rotating arms (301).

9. The environmentally friendly nonwoven fabric impregnation and dyeing equipment according to claim 1, characterized in that, The dyeing box (4) has symmetrically arranged electrical control rails (502) on both sides inside, which drive the control plate (501). The control plate (501) is mounted on the top of the electrical control rails (502).

10. The fabric production process of an environmentally friendly nonwoven fabric dyeing equipment according to claim 1, characterized in that, Includes the following steps; S1: The worker pulls the nonwoven fabric to be dyed out sequentially from the outside of the feeding roller (2), the auxiliary roller (3) and the control roller (504), and at the same time adds the same amount of dyeing liquid into the first chamber (401) and the second chamber (402) through an external pump. At this time, the control plate (501) is in the middle position between the first chamber (401) and the second chamber (402), and the nonwoven fabric hanging in a W shape is located above the first chamber (401) and the second chamber (402) and does not come into contact with the dyeing liquid. S2: Taking Figure 8 as an example, when the worker starts the entire equipment, the control plate (501) moves slowly toward the first chamber (401). At the same time, the connecting rod (506) is used to drive the control roller (504) rigidly, so that the control roller (504) moves along the inside of the sliding groove (503), causing the control roller (504) above the first chamber (401) to move down, while the control roller (504) above the second chamber (402) moves up, pressing down the left end of the W-shaped nonwoven fabric and lifting the right end with traction, thereby causing the nonwoven fabric to be embedded in the dyeing liquid inside the first chamber (401); S3: The external traction device connected to the nonwoven fabric starts to run, driving the nonwoven fabric to move slowly and continuously being dyed by the dyeing liquid inside the first chamber (401). S4: When the detection component located inside the first chamber (401) detects that the concentration and volume of the dyeing solution inside the first chamber (401) have decreased to a set threshold, the system controls the control plate (501) to move slowly toward the second chamber (402), causing the two control rollers (504) to move in the opposite direction, thereby driving the right end of the nonwoven fabric hanging in a W shape to be pressed down and the left end to be pulled up, thereby causing the nonwoven fabric to be inserted into the dyeing solution inside the second chamber (402); S5: Simultaneously, the pump connected to the outside of the first chamber (401) starts to run and replenishes the mother liquor of the same volume into the first chamber (401), and repeats this process to complete the alternating impregnation of the nonwoven fabric.

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