Overflow dyeing process and equipment for non-woven fabric with ultrahigh gram weight

Abstract

The invention discloses an overflow dyeing process and equipment for a non-woven fabric with ultrahigh gram weight, and relates to the technical field of overflow dyeing. An operator sends the gray fabric into the jet overflow dyeing machine through the operation port; step 2, washing with water; step 3, dyeing; step 4, dehydrating and scutching; and step 5, shaping. High-water-washing disperse dye is adopted, the dyeing temperature is adjusted to 140 DEG C from 130 DEG C, a leveling agent, a bath softening agent and a dispersing agent are added in the dyeing process, the heat preservation time is 60 minutes, the whole cloth cover is evenly dyed, the color is full, in addition, by increasing the dyeing temperature, fiber molecules are fully opened, the dye is fully absorbed, and the dyeing effect is good. The color fastness is improved by 0.5-1 level and can reach 4-5 levels; after dyeing, the hand feeling softness is obviously improved, and the hardness value is reduced by about 50% compared with that before dyeing; by arranging the guiding and conveying mechanism and the large-diameter nozzles, the phenomenon that the cloth cannot flow or stops in the operation process is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of overflow dyeing, and specifically to an overflow dyeing process and equipment for non-woven fabrics with ultra-high gram weight. Background Art

[0002] Ultra-high gram weight non-woven fabric refers to non-woven fabric with a weight per square meter exceeding 1500 grams. Such non-woven fabrics have the characteristics of hard handfeel before dyeing, poor bending degree and elasticity. However, they have high strength and durability and are often used in the production of products requiring high load-bearing and durability, such as tents, car covers, etc. The dyeing of ultra-high gram weight non-woven fabrics has a large market share, with an annual production capacity of not less than 100,000 tons, and is often used to replace kraft paper or leather products. All along, non-woven fabrics have been in their original color and rarely dyed, resulting in difficult color selection and a high minimum order quantity. According to the applicant's understanding, almost no overflow dyeing has been used for the dyeing of ultra-high gram weight non-woven fabrics on the market, and only a small amount has been dyed using the jig dyeing process. When dyeing this type of non-woven fabric, jig dyeing cannot effectively penetrate the fabric, only the surface is colored, and the color fastness can only reach about level 3. Overflow dyeing can improve these problems, making the color full and uniform, without edge-middle difference and left-right difference, and the color fastness can reach level 4 and above; in addition, overflow dyeing has a high production capacity, with an efficiency 2-3 times higher than that of jig dyeing, significantly improving its production capacity.

[0003] However, when overflow dyeing ultra-high gram weight non-woven fabrics, due to the large mass per unit area of the heavy fabric, the heavy fabric is difficult to operate, and the flow rate of the dye liquor cannot effectively drive the circulation of the grey fabric, easily causing cloth jams or local accumulations. In order to facilitate the overflow dyeing of ultra-high gram weight non-woven fabrics and solve the problem of difficult feeding, an overflow dyeing process and equipment for ultra-high gram weight non-woven fabrics are provided. Summary of the Invention

[0004] The purpose of the present invention is to provide an overflow dyeing process and equipment for ultra-high gram weight non-woven fabrics in order to facilitate the overflow dyeing of ultra-high gram weight non-woven fabrics and solve the problem of difficult feeding.

[0005] To achieve the above purpose, the present invention provides the following technical solution: an overflow dyeing process for ultra-high gram weight non-woven fabrics, and the specific steps are as follows: Step 1: Loading into the cylinder; the operator sends the grey fabric into the jet overflow dyeing machine through the operation port; Step 2: Washing; first, adjust the liquor ratio to 1:10, the dosage of sodium hydroxide is 20 g / L, the chemical material dissolving time is 10 minutes, fully stir evenly, add with cold water for dissolving, start heating 5 minutes after adding, the fabric rotation speed is 100-120 meters per minute, heat up to 120 °C at a heating rate of 3 °C per minute and keep warm for 30 minutes, then cool down to 80 °C at a cooling rate of 2 °C per minute for washing; Step 3: Dyeing; After sufficient water washing, add a leveling agent accounting for 2% of the total liquid volume by mass and a softener in the bath accounting for 3% of the total liquid volume by mass, and adjust the pH value to 5; Dissolve the disperse dye with warm water at 50 °C and stir evenly, then add the material into the jet overflow dyeing machine after filtration. The feeding time is 10 minutes; After the feeding is completed, run for 5 minutes and then start heating up at a rate of 1.5 °C per minute. The fabric rotation speed is 120 - 150 meters per minute. After heating up to 140 °C, keep it warm for 60 minutes. After the heat preservation ends, cool down to 80 °C at a rate of 2 °C per minute and take a sample; Step 4: Dehydration and opening; Evenly put the fabric into a centrifugal dehydrator, with a rotation speed of 530 - 540 revolutions per minute, a dehydration time of 10 minutes, and a dehydration rate of 70% - 75%, and then open it; Step 5: Setting; The temperature is set at 200 °C, the dosage of the softener is 3 grams per liter, the air volume of the setting machine is adjusted to the maximum, the vehicle speed is 13 - 15 meters per minute, and the setting width is set 2 centimeters larger than the required width.

[0006] The overflow dyeing equipment for the ultra-high gram weight non-woven fabric overflow dyeing process includes a jet overflow dyeing machine. The jet overflow dyeing machine includes a cylinder body. One end of the cylinder body is provided with an operation port. The inner cavity of the cylinder body is fixedly connected with a cloth passing pipe. The outer wall of the cylinder body is fixedly connected with a liquid inlet pipe. The top of the cloth passing pipe is equipped with a nozzle with an inner diameter of 20 - 22 centimeters. One end of the liquid inlet pipe is connected to the nozzle, and the other end of the liquid inlet pipe is fixedly connected with a filter. The outer wall of the liquid inlet pipe is sleeved with a heat exchanger. The bottom of the inner cavity of the cylinder body is provided with a cloth storage tank. The bottom of the cloth storage tank is connected with a main pump and a dyeing feeding tank through a pipeline and a control valve. The main pump and the dyeing feeding tank are connected with the filter through a pipeline and a control valve; A motor is installed on one side outer wall of the cylinder body, and the fabric in the cylinder body is fed through a feeding mechanism.

[0007] As a further scheme of the present invention: The feeding mechanism includes a mounting shaft and a fixing frame. The mounting shaft is connected to the output end of the motor. The fixing frames are symmetrically and fixedly connected to both sides of the inner wall of the cylinder body and are located outside the mounting shaft. Multiple groups of fixing plates are symmetrically and fixedly connected to the outer wall of the mounting shaft. Both sides of the outer wall of the fixing plate are respectively provided with a sliding groove and a displacement groove. A sliding plate is slidably connected to the inner wall of the sliding groove. A first limiting rod penetrating through the sliding plate is fixedly connected to the inner wall of the sliding groove. A lower pinch roller is fixedly connected between the two sliding plates. A displacement frame is slidably connected to the inner wall of the displacement groove. A second limiting rod penetrating through the displacement frame is fixedly connected to the inner wall of the displacement groove. A first straight gear is rotatably connected between the sliding plate and the displacement frame inside the fixing plate.

[0008] As a further aspect of the present invention: The feeding mechanism further includes a guiding rod, which is fixedly connected to the outer wall of one side of the displacement frame. A rotatable upper clamping rod is installed at the top of the displacement frame. One end of the fixed frame is provided with an annular groove, a connecting groove, and an arc groove. The connecting grooves are symmetrically arranged at both ends of the arc groove. Both ends of the annular groove are respectively communicated with the two connecting grooves. The upper clamping rod rotates relative to the displacement frame through a rotating mechanism.

[0009] As a further aspect of the present invention: The rotating mechanism includes a first mounting rod and a second mounting rod. The first mounting rod and the second mounting rod are respectively fixedly connected to both outer walls of the fixed frame. One end of the first mounting rod is fixedly connected with a first arc plate. One end of the second mounting rod is fixedly connected with a second arc plate. A rotating shaft is fixedly connected to the outer wall of the upper clamping rod. The rotating shaft is rotatably connected to the displacement frame. One end of the upper clamping rod is fixedly connected with a worm gear. The rotating shaft is coaxially arranged with the worm gear. A worm is rotatably connected to the inside of the displacement frame at the bottom of the worm gear. One end of the worm is fixedly connected with a fourth straight gear. A third straight gear is rotatably connected to the inside of the displacement frame at the bottom of the fourth straight gear. One end of the third straight gear is fixedly connected with a second straight gear.

[0010] As a further aspect of the present invention: The inner walls of the annular groove, the connecting groove, and the arc groove are all in contact with the outer wall of the guiding rod. The shape of the guiding rod is cylindrical.

[0011] As a further aspect of the present invention: The outer wall of the displacement frame is in contact with the inner wall of the displacement groove. The inner wall of the sliding groove is in contact with the outer wall of the sliding plate.

[0012] As a further aspect of the present invention: First tooth grooves are provided on the outer walls of the sliding plate and the displacement frame. The first tooth grooves are meshed with the first straight gear.

[0013] As a further aspect of the present invention: Second tooth grooves are provided on the inner side of the first arc plate and the outer side of the second arc plate. The second tooth grooves are meshed with the second straight gear.

[0014] As a further aspect of the present invention: The third straight gear is meshed with the fourth straight gear.

[0015] As a further aspect of the present invention: The worm is matched with the worm gear.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. The dyeing of non-woven fabrics is significantly different from that of conventional polyester dyeing. The dye uses high-water-washable disperse dyes, and the dyeing temperature is adjusted from 130 degrees Celsius to 140 degrees Celsius. Leveling agent, bath softener and dispersant are added during the dyeing process. The heat preservation time is 60 minutes, so that the entire cloth surface is evenly dyed with full color. In addition, by increasing the dyeing temperature and increasing the pressure in the cylinder, the fiber molecules are fully opened, the dye is fully absorbed, and the color fastness is improved by 0.5-1 levels, which can reach 4-5 levels. The softness of the hand is significantly improved after dyeing, and the hardness value is reduced by about 50% compared with before dyeing.

[0017] 2. Conventional fabric dyeing nozzles have a diameter between 8 and 13 centimeters. Considering the characteristics of this product, the nozzle of the dyeing machine was reset and a 20-centimeter nozzle was customized. By setting up a guide mechanism and combining it with a large-diameter nozzle, the problem of the fabric not being able to flow or stagnate during operation is solved. The motor drives the installation shaft to rotate, and the lower clamping roller and the upper clamping rod move closer to each other, clamping the fabric between them. At this time, the installation shaft rotates, pulling the fabric through the lower clamping roller and the upper clamping rod to move it, facilitating the passage of the large-diameter nozzle, allowing the dye to effectively promote the circulation of the grey fabric. At the same time, the lower clamping roller and the upper clamping rod clamp and pull the fabric, facilitating the guiding of ultra-high-weight non-woven fabrics.

[0018] 3. By setting up a rotating mechanism, after traction is completed, the lower clamping roller and the upper clamping rod release their clamping of the fabric, and then the mounting shaft continues to rotate with the fixed plate until the second spur gear contacts the first curved plate, driving the upper clamping rod to rotate. At this time, the fabric can be displaced out from between the lower clamping roller and the upper clamping rod; when the mounting shaft drives the fixed plate to rotate to the other side, the fabric moves to the outer wall of the lower clamping roller again, the second spur gear contacts the second curved plate, and the upper clamping rod rotates and is in a vertical state with the displacement frame, which is convenient for the next clamping operation and the fabric moves in and out between the lower clamping roller and the upper clamping rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the jet overflow dyeing machine of the present invention; Figure 2 Schematic diagram of the structure of the cylinder of the jet overflow dyeing machine of the present invention; Figure 3 Schematic diagram of the internal structure of the cylinder of the jet overflow dyeing machine of the present invention; Figure 4 Schematic diagram of the installation of the fixed frame of the jet overflow dyeing machine of the present invention; Figure 5 This is a schematic structural diagram of the installation shaft of the jet overflow dyeing machine of the present invention; Figure 6 Schematic diagram of the internal structure of the fixed plate of the jet overflow dyeing machine of the present invention; Figure 7For the jet overflow dyeing machine of the present invention Figure 6 The enlarged view of part A in Figure 8 The structural schematic diagram of the fixing frame of the jet overflow dyeing machine of the present invention Figure 9 The internal structural schematic diagram of the displacement frame of the jet overflow dyeing machine of the present invention

[0020] In the figure: 1. Cylinder body; 2. Operation port; 3. Cloth passing pipe; 4. Nozzle; 5. Liquid inlet pipe; 6. Motor; 7. Fabric guiding mechanism; 701. Mounting shaft; 702. Fixed plate; 703. Slide groove; 704. Slide plate; 705. First limiting rod; 706. Lower pinch roller; 707. Displacement groove; 708. Displacement frame; 709. Second limiting rod; 710. First straight gear; 711. Upper clamping rod; 712. Guide rod; 713. Fixing frame; 714. Annular groove; 715. Connecting groove; 716. Arc groove; 8. Rotating mechanism; 801. First mounting rod; 802. First arc plate; 803. Second mounting rod; 804. Second arc plate; 805. Rotating shaft; 806. Worm gear; 807. Worm; 808. Fourth straight gear; 809. Third straight gear; 810. Second straight gear; 9. Heat exchanger; 10. Filter; 11. Main pump; 12. Dyeing feeding cylinder; 13. Fabric storage tank Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "set" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. The following will describe the embodiments according to the overall structure of the present invention.

[0023] Please refer to Figures 1 to 8 , in the embodiment of the present invention, the overflow dyeing process for ultra-high gram weight non-woven fabric is as follows: Step 1: Feeding into the cylinder; The operator sends the grey fabric into the jet overflow dyeing machine through the operation port 2; Step 2: Water washing; First, adjust the liquor ratio to 1:10, the dosage of sodium hydroxide is 20 g / L, the chemical material dissolving time is 10 minutes, stir evenly, add the chemical materials with normal temperature water, start heating after running for 5 minutes, the fabric rotation speed is 100 - 120 meters per minute, heat up to 120 °C at a heating rate of 3 °C per minute, keep warm for 30 minutes, and then cool down to 80 °C at a cooling rate of 2 °C per minute for water washing; Step 3: Dyeing; After sufficient water washing, add a leveling agent accounting for 2% by mass of the total liquid volume and a softener in the bath accounting for 3% by mass of the total liquid volume, and adjust the pH value to 5; Dissolve the disperse dye with warm water at 50 °C and stir evenly, then add the dye into the jet overflow dyeing machine after filtration, and the feeding time is 10 minutes; After the feeding is completed, start heating after running for 5 minutes, heat up at a rate of 1.5 °C per minute, the fabric rotation speed is 120 - 150 meters per minute, heat up to 140 °C and keep warm for 60 minutes, after the heat preservation is over, cool down to 80 °C at a rate of 2 °C per minute, and take a sample; Step 4: Dehydration and opening; Put the fabric evenly into the centrifugal dehydrator, the rotation speed is 530 - 540 revolutions per minute, the dehydration time is 10 minutes, the dehydration rate is 70% - 75%, and then open it; Step 5: Shaping; set the temperature to 200 °C, the dosage of softener is 3 g / L, adjust the air volume of the shaping machine to the maximum, the vehicle speed is 13 - 15 meters per minute, and the shaping width is set 2 cm larger than the required width.

[0024] In this embodiment: The non-woven fabric dyeing is significantly different from the conventional polyester dyeing. The dye used is a high-wash dispersion dye. The dyeing temperature is adjusted from 130 °C to 140 °C. A leveling agent, a bath softener, and a dispersant are added during the dyeing process. The heat preservation time is 60 minutes to ensure uniform dyeing of the entire fabric surface with full color saturation. Additionally, by increasing the dyeing temperature and the pressure in the cylinder, the fiber molecules are fully opened, the dye is fully absorbed, and the color fastness is improved by 0.5 - 1 level, reaching 4 - 5 levels; the hand feel softness after dyeing is significantly improved, and the hardness value decreases by about 50% compared with that before dyeing.

[0025] Please refer specifically to Figures 1 to 8 , the overflow dyeing equipment for the ultra-high gram weight non-woven fabric overflow dyeing process, including a jet overflow dyeing machine. The jet overflow dyeing machine includes a cylinder body 1. One end of the cylinder body 1 is provided with an operation port 2. A cloth passing tube 3 is fixedly connected to the inner cavity of the cylinder body 1. A liquid inlet pipe 5 is fixedly connected to the outer wall of the cylinder body 1. A nozzle 4 with an inner diameter of 20 cm is installed at the top of the cloth passing tube 3. One end of the liquid inlet pipe 5 is connected to the nozzle 4, and the other end of the liquid inlet pipe 5 is fixedly connected to a filter 10. A heat exchanger 9 is sleeved on the outer wall of the liquid inlet pipe 5. A cloth storage tank 13 is arranged at the bottom of the inner cavity of the cylinder body 1. The bottom of the cloth storage tank 13 is connected to a main pump 11 and a dyeing feeding tank 12 through a pipeline and a control valve. The main pump 11 and the dyeing feeding tank 12 are connected to the filter 10 through a pipeline and a control valve; A motor 6 is installed on one side outer wall of the cylinder body 1, and the fabric in the cylinder body 1 is fed through a feeding mechanism 7.

[0026] The feeding mechanism 7 includes a mounting shaft 701 and a fixing frame 713. The mounting shaft 701 is connected to the output end of the motor 6. The fixing frame 713 is symmetrically and fixedly connected to both sides of the inner wall of the cylinder block 1 and is located outside the mounting shaft 701. A plurality of groups of fixing plates 702 are symmetrically and fixedly connected to the outer wall of the mounting shaft 701. Sliding grooves 703 and displacement grooves 707 are respectively formed on both sides of the outer wall of the fixing plate 702. A sliding plate 704 is slidably connected to the inner wall of the sliding groove 703. A first limiting rod 705 penetrating through the sliding plate 704 is fixedly connected to the inner wall of the sliding groove 703. A lower pinch roller 706 is fixedly connected between the two sliding plates 704. A displacement frame 708 is slidably connected to the inner wall of the displacement groove 707. A second limiting rod 709 penetrating through the displacement frame 708 is fixedly connected to the inner wall of the displacement groove 707. A first straight gear 710 is rotatably connected inside the fixing plate 702 between the sliding plate 704 and the displacement frame 708. The feeding mechanism 7 further includes a guide rod 712. The guide rod 712 is fixedly connected to one side outer wall of the displacement frame 708. An upper clamping rod 711 capable of rotating is installed at the top of the displacement frame 708. An annular groove 714, a connecting groove 715 and an arc groove 716 are formed at one end of the fixing frame 713. The connecting grooves 715 are symmetrically arranged at both ends of the arc groove 716. Both ends of the annular groove 714 are communicated with the two connecting grooves 715 respectively. The upper clamping rod 711 rotates relative to the displacement frame 708 through a rotating mechanism 8.

[0027] In this embodiment: The diameter of the conventional fabric dyeing nozzle 4 is between 8 and 13 cm. Considering the characteristics of this product, the nozzles of the dyeing machine are reset, and large-diameter nozzles 4 with a diameter of 20 cm are customized to solve the problem that the ultra-high gram-weight non-woven fabric cannot flow or stagnate during the dyeing operation. The usage method of this equipment is as follows: The operator sends the greige cloth through the operation port 2 to the feeding mechanism 7, then into the nozzle 4 and the cloth-passing tube 3, and then to the cloth storage tank 13. Then, the greige cloth is sent to the front half of the cylinder block 1 by the kinetic energy brought by the flowing liquid. The operator stitches the head and tail of the greige cloth to form a closed loop ( Figure 1 as shown by the medium thick solid line is the shape of the greige cloth). Running in this way repeatedly can achieve the purpose of dyeing the greige cloth; The heat exchanger 9 plays a role in regulating the temperature of the liquid in the equipment during dyeing; When the main pump 11 is running, the filter 10 can filter the fluff contained in the circulating liquid taken out of the equipment; The dyeing feeding cylinder 12 can play a role in proportioning, dissolving and adding dyes and auxiliaries during the dyeing process of the greige cloth.

[0028] When feeding the fabric, the fabric passes through between the lower pinch roller 706 and the upper pinch bar 711. The motor 6 is started, and the operation of the motor 6 drives the mounting shaft 701 to rotate. The rotation of the mounting shaft 701 drives the fixed plate 702 to rotate. At this time, the guide rod 712 slides along the annular groove 714, the connecting groove 715, and the arc groove 716. When the mounting shaft 701 rotates and drives the lower pinch roller 706 to rotate above the mounting shaft 701 through the fixed plate 702 and the displacement frame 708, the guide rod 712 moves from the annular groove 714 into the arc groove 716 through the connecting groove 715. The displacement of the guide rod 712 drives the displacement frame 708 to slide in the displacement groove 707. The displacement of the displacement frame 708 drives the upper pinch bar 711 to displace. At the same time, the displacement of the displacement frame 708 drives the first straight gear 710 to rotate. The rotation of the first straight gear 710 drives the slide plate 704 to slide in the slide groove 703. The displacement of the slide plate 704 drives the lower pinch roller 706 to displace, so that the lower pinch roller 706 and the upper pinch bar 711 approach each other to displace and clamp the fabric between them. At this time, the rotation of the mounting shaft 701 drives the fabric to displace through the rotation of the lower pinch roller 706 and the upper pinch bar 711; when the guide rod 712 displaces from the arc groove 716 into the annular groove 714 through the connecting groove 715, the lower pinch roller 706 and the upper pinch bar 711 move away from each other, canceling the clamping of the fabric. At the same time, another set of lower pinch roller 706 and upper pinch bar 711 clamp the fabric, thereby feeding the fabric, facilitating the effective pushing of the dye liquor to circulate the grey cloth through the large-diameter nozzle 4. At the same time, the lower pinch roller 706 and the upper pinch bar 711 clamp and traction the fabric, which is convenient for feeding the non-woven fabric with ultra-high gram weight.

[0029] Please refer specifically to Figures 7 to 8 , the rotating mechanism 8 includes a first mounting rod 801 and a second mounting rod 803. The first mounting rod 801 and the second mounting rod 803 are respectively fixedly connected to both sides of the outer wall of the fixed frame 713. One end of the first mounting rod 801 is fixedly connected with a first arc plate 802, and one end of the second mounting rod 803 is fixedly connected with a second arc plate 804. The outer wall of the upper pinch bar 711 is fixedly connected with a rotating shaft 805. The rotating shaft 805 is rotationally connected with the displacement frame 708. One end of the upper pinch bar 711 is fixedly connected with a worm gear 806. The rotating shaft 805 is coaxially arranged with the worm gear 806. A worm 807 is rotationally connected to the bottom end of the displacement frame 708 inside the displacement frame 708. One end of the worm 807 is fixedly connected with a fourth straight gear 808. A third straight gear 809 is rotationally connected to the bottom end of the displacement frame 708 inside the displacement frame 708. One end of the third straight gear 809 is fixedly connected with a second straight gear 810.

[0030] In this embodiment: When the lower pinch roller 706 and the upper clamping rod 711 clamp and traction the fabric, the upper clamping rod 711 is perpendicular to the displacement frame 708. After the traction is completed, the lower pinch roller 706 and the upper clamping rod 711 release the clamping of the fabric. Then, the mounting shaft 701 continues to drive the fixing plate 702 to rotate until the second straight gear 810 contacts the first arc plate 802. The second straight gear 810 displaces along the first arc plate 802 and thus rotates. The rotation of the second straight gear 810 drives the third straight gear 809 to rotate. The rotation of the third straight gear 809 drives the fourth straight gear 808 to rotate. The rotation of the fourth straight gear 808 drives the worm 807 to rotate. The rotation of the worm 807 drives the worm gear 806 to rotate. The rotation of the worm gear 806 drives the upper clamping rod 711 to rotate. When the first arc plate 802 is separated from the second straight gear 810, the upper clamping rod 711 rotates to a vertical state. At this time, the fabric can be removed from between the lower pinch roller 706 and the upper clamping rod 711.

[0031] When the mounting shaft 701 drives the fixing plate 702 to rotate to the other side, after the fabric moves to the outer wall of the lower pinch roller 706 again, the second straight gear 810 contacts the second arc plate 804. The second straight gear 810 displaces along the second arc plate 804 and thus rotates, thereby driving the upper clamping rod 711 to rotate to be perpendicular to the displacement frame 708, facilitating the next clamping operation and facilitating the fabric to move into and out of between the lower pinch roller 706 and the upper clamping rod 711.

[0032] Please refer specifically to Figures 3 to 7 , the inner walls of the annular groove 714, the connecting groove 715, and the arc groove 716 are all in contact with the outer wall of the guide rod 712. The shape of the guide rod 712 is cylindrical.

[0033] In this embodiment: The guide rod 712 slides along the annular groove 714, the connecting groove 715, and the arc groove 716; the guide rod 712 moves from the annular groove 714 into the arc groove 716 through the connecting groove 715. The displacement of the guide rod 712 drives the displacement frame 708 to slide in the displacement groove 707.

[0034] Please refer specifically to Figures 3 to 7 , the outer wall of the displacement frame 708 is in contact with the inner wall of the displacement groove 707, and the inner wall of the sliding groove 703 is in contact with the outer wall of the sliding plate 704.

[0035] In this embodiment: The displacement frame 708 can slide in the displacement groove 707, and the second limiting rod 709 limits the movement of the displacement frame 708; the sliding plate 704 can slide in the sliding groove 703, and the first limiting rod 705 limits the movement of the sliding plate 704.

[0036] Please refer specifically to Figures 3 to 7, the outer walls of the skateboard 704 and the displacement frame 708 are both provided with first tooth grooves, and the first tooth grooves are engaged with the first spur gear 710.

[0037] In this embodiment: the displacement of the displacement frame 708 drives the first spur gear 710 to rotate, and the rotation of the first spur gear 710 drives the skateboard 704 to slide in the chute 703.

[0038] Please refer specifically to Figures 7 to 8 , second tooth grooves are provided on the inner side of the first arc plate 802 and the outer side of the second arc plate 804, and the second tooth grooves are engaged with the second spur gear 810.

[0039] In this embodiment: the second spur gear 810 is in contact with the first arc plate 802, and the second spur gear 810 displaces along the first arc plate 802 and thus rotates; the second spur gear 810 is in contact with the second arc plate 804, and the second spur gear 810 displaces along the second arc plate 804 and thus rotates.

[0040] Please refer specifically to Figures 7 to 8 , the third spur gear 809 is engaged with the fourth spur gear 808, and the worm 807 is matched with the worm gear 806.

[0041] In this embodiment: the rotation of the second spur gear 810 drives the third spur gear 809 to rotate, the rotation of the third spur gear 809 drives the fourth spur gear 808 to rotate, the rotation of the fourth spur gear 808 drives the worm 807 to rotate, the rotation of the worm 807 drives the worm gear 806 to rotate, and the rotation of the worm gear 806 drives the upper clamping rod 711 to rotate.

[0042] The above-mentioned are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. The overflow dyeing process for non-woven fabric with ultra-high grammage is characterized in that The specific steps are as follows: Step 1: Enter the cylinder; the operator sends the grey fabric into the jet overflow dyeing machine through the operation port (2). Step 2: Water washing; first, adjust the liquor ratio to 1:10, the dosage of sodium hydroxide is 20 g / L, the chemical material dissolving time is 10 minutes, stir evenly, add the chemical materials with normal temperature water, start heating after running for 5 minutes, the fabric rotation speed is 100 - 120 m per minute, heat up at a speed of 3 °C per minute to 120 °C and keep warm for 30 minutes, then cool down at a speed of 2 °C per minute to 80 °C for water washing. Step 3: Dyeing; after sufficient water washing, add a leveling agent accounting for 2% of the total liquid volume by mass and a softener in the bath accounting for 3% of the total liquid volume by mass, adjust the pH value to 5; dissolve the disperse dye with warm water at 50 °C and stir evenly, then add the material into the jet overflow dyeing machine after filtration, the feeding time is 10 minutes; start heating after running for 5 minutes after feeding, heat up at a speed of 1.5 °C per minute, the fabric rotation speed is 120 - 150 m per minute, heat up to 140 °C and keep warm for 60 minutes, after the end of heat preservation, cool down to 80 °C at a speed of 2 °C per minute and take samples. Step 4: Dehydration and width opening; evenly put the fabric into the centrifugal dehydrator, the rotation speed is 530 - 540 revolutions per minute, the dehydration time is 10 minutes, the dehydration rate is 70% - 75%, and then open the width. Step 5: Setting; the temperature is set at 200 °C, the dosage of the softener is 3 g / L, the air volume of the setting machine is adjusted to the maximum, the vehicle speed is 13 - 15 m per minute, and the setting width is set 2 cm larger than the required width.

2. The overflow dyeing equipment for the overflow dyeing process of the non-woven fabric with ultra-high grammage according to claim 1, characterized in that, It includes a jet overflow dyeing machine, the jet overflow dyeing machine includes a cylinder body (1), one end of the cylinder body (1) is provided with an operation port (2), a cloth passing pipe (3) is fixedly connected to the inner cavity of the cylinder body (1), a liquid inlet pipe (5) is fixedly connected to the outer wall of the cylinder body (1), a nozzle (4) with an inner diameter of 20 - 22 cm is installed at the top of the cloth passing pipe (3), one end of the liquid inlet pipe (5) is connected to the nozzle (4), the other end of the liquid inlet pipe (5) is fixedly connected with a filter (10), a heat exchanger (9) is sleeved on the outer wall of the liquid inlet pipe (5), a cloth storage tank (13) is arranged at the bottom of the inner cavity of the cylinder body (1), the bottom of the cloth storage tank (13) is connected with a main pump (11) and a dyeing feeding tank (12) through a pipeline and a control valve, the main pump (11) and the dyeing feeding tank (12) are connected with the filter (10) through a pipeline and a control valve; a motor (6) is installed on one side outer wall of the cylinder body (1), and the fabric in the cylinder body (1) is fed through a feeding mechanism (7).

3. The overflow dyeing equipment for the ultra-high grammage non-woven fabric overflow dyeing process according to claim 2, characterized in that, The feeding mechanism (7) includes a mounting shaft (701) and a fixing frame (713). The mounting shaft (701) is connected to the output end of the motor (6). The fixing frame (713) is symmetrically and fixedly connected to both sides of the inner wall of the cylinder block (1) and is located outside the mounting shaft (701). A plurality of groups of fixing plates (702) are symmetrically and fixedly connected to the outer wall of the mounting shaft (701). Both sides of the outer wall of the fixing plate (702) are respectively provided with a sliding groove (703) and a displacement groove (707). A sliding plate (704) is slidably connected to the inner wall of the sliding groove (703). A first limiting rod (705) penetrating through the sliding plate (704) is fixedly connected to the inner wall of the sliding groove (703). A lower pinch roller (706) is fixedly connected between the two sliding plates (704). A displacement frame (708) is slidably connected to the inner wall of the displacement groove (707). A second limiting rod (709) penetrating through the displacement frame (708) is fixedly connected to the inner wall of the displacement groove (707). A first straight gear (710) is rotatably connected inside the fixing plate (702) between the sliding plate (704) and the displacement frame (708).

4. The overflow dyeing equipment for the ultra-high grammage non-woven fabric overflow dyeing process according to claim 3, characterized in that, The feeding mechanism (7) further includes a guiding rod (712). The guiding rod (712) is fixedly connected to one side outer wall of the displacement frame (708). A rotatable upper clamping rod (711) is installed at the top of the displacement frame (708). An annular groove (714), a connecting groove (715) and an arc groove (716) are provided at one end of the fixing frame (713). The connecting grooves (715) are symmetrically arranged at both ends of the arc groove (716). Both ends of the annular groove (714) are respectively communicated with the two connecting grooves (715). The upper clamping rod (711) performs a rotating operation relative to the displacement frame (708) through a rotating mechanism (8).

5. The overflow dyeing equipment for the ultra-high gram weight non-woven fabric overflow dyeing process according to claim 4, characterized in that, The rotating mechanism (8) includes a first mounting rod (801) and a second mounting rod (803). The first mounting rod (801) and the second mounting rod (803) are respectively fixedly connected to both sides of the outer wall of the fixing frame (713). A first arc plate (802) is fixedly connected to one end of the first mounting rod (801). A second arc plate (804) is fixedly connected to one end of the second mounting rod (803). A rotating shaft (805) is fixedly connected to the outer wall of the upper clamping rod (711). The rotating shaft (805) is rotatably connected to the displacement frame (708). A worm gear (806) is fixedly connected to one end of the upper clamping rod (711). The rotating shaft (805) is coaxially arranged with the worm gear (806). A worm (807) is rotatably connected to the bottom end of the worm gear (806) inside the displacement frame (708). A fourth straight gear (808) is fixedly connected to one end of the worm (807). A third straight gear (809) is rotatably connected to the bottom end of the fourth straight gear (808) inside the displacement frame (708). A second straight gear (810) is fixedly connected to one end of the third straight gear (809).

6. The overflow dyeing equipment for the ultra-high grammage non-woven fabric overflow dyeing process according to claim 4, characterized in that, The inner walls of the annular groove (714), the connecting groove (715) and the arc groove (716) are all in contact with the outer wall of the guide rod (712), and the guide rod (712) is cylindrical in shape.

7. The overflow dyeing equipment for the ultra-high grammage non-woven fabric overflow dyeing process according to claim 4, characterized in that, The outer wall of the displacement frame (708) is in contact with the inner wall of the displacement groove (707), and the inner wall of the sliding groove (703) is in contact with the outer wall of the sliding plate (704).

8. The overflow dyeing equipment for the overflow dyeing process of ultra-high grammage non-woven fabric according to claim 4, characterized in that, The outer walls of the sliding plate (704) and the displacement frame (708) are both provided with first tooth grooves, and the first tooth grooves are engaged with the first spur gear (710).

9. The overflow dyeing equipment for the ultra-high grammage non-woven fabric overflow dyeing process according to claim 5, characterized in that, Second tooth grooves are provided on the inner side of the first arc plate (802) and the outer side of the second arc plate (804), and the second tooth grooves are engaged with the second spur gear (810).

10. The overflow dyeing equipment for the overflow dyeing process of ultra-high grammage non-woven fabric according to claim 5, characterized in that, The third spur gear (809) is engaged with the fourth spur gear (808); the worm (807) is matched with the worm wheel (806).

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