Carding process based on single coagulation and unidirectional stretching and compression copolymerization

Abstract

The application discloses a carding machine webbing process based on single condensation and one-way stretching and compression copolymerization, which comprises the following steps: S1, transferring; S2, one-way condensation; and S3, webbing. The application is based on a copolymerization zone formed by a single condensation roller and a stripping roller, which not only optimizes the structure of the condensation roller (only a single roller can implement condensation), but also implements stretching and compression in one-way movement, so as to enhance the strength of webbing, is not affected by speed, can realize high-speed webbing production, and overcomes the defects of insufficient webbing quality caused by improper control of the speed difference of the rollers. In addition, the application can implement webbing under the same stripping force and the same webbing angle, improves the thickness and fiber bonding force uniformity of the fiber web, enhances the length-width strength ratio of the fiber web, and improves the webbing quality.

Description

Technical Field

[0001] This invention belongs to the field of carding machine technology, specifically relating to a carding machine web-out process based on single coagulation and uniaxial stretching and compression copolymerization. Background Technology

[0002] A carding machine is a textile machinery used to process fibers. Its working principle is to open, mix and remove impurities from pre-processed fiber raw materials, and card block fibers into bundles and single fibers to form a thin layer of mesh fibers.

[0003] In a traditional carding machine, after the fibers are combed and impurities are removed, the cotton web is transferred from the cylinder to the doffer. The first cohesive roller peels the cotton web from the doffer onto its card cloth, and then transfers it to the second cohesive roller through the card cloth. Its linear speed is reduced proportionally, thereby achieving cohesion, increasing the thickness of the fiber layer and removing impurities, and increasing the fiber cohesion. Then, the fiber layer is peeled off from the second cohesive roller by the stripping roller and sent to the output curtain for web exit.

[0004] However, the following technical defects exist in the above-mentioned network outgoing process:

[0005] 1) Because the two coagulation rollers need to form a controlled speed difference (the linear speed is reduced proportionally, which means deceleration), the overall speed of the carding and web extrusion cannot be significantly increased;

[0006] 2) The upper and lower parts of the two coagulation rollers are wound together in a continuous winding manner, that is, bidirectional and continuous stretching coagulation. Therefore, stretching coagulation is the main process during coagulation, that is, stretching and compression copolymerization cannot be effectively carried out, resulting in the fiber web strength not reaching the optimal level.

[0007] 3) If the peeling force and exit angle cannot be kept constant during the peeling process of the peeling roller, it is easy to cause uneven thickness of the fiber web and fiber cohesion, which seriously affects the quality of the web. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of the prior art and provide an improved carding machine web output process based on single cohesion and uniaxial stretching and compression copolymerization.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0010] A carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization includes the following steps:

[0011] S1, Transfer

[0012] After being combed, the fibers are transferred from the cylinder to the lower part of the doffer, and then transferred forward and upward to the condensing roller based on the doffer;

[0013] S2, Unidirectional Coagulation

[0014] A single coagulation roller is selected for coagulation. The fiber is stretched forward unidirectionally along the coagulation roller and enters the copolymerization zone between the single coagulation roller and the stripping roller. The fiber is stretched and compressed in the copolymerization zone. At the same time, the stripping roller maintains the same movement path and unidirectionally strips the fiber web layer in the copolymerization zone, and transfers it forward and upward unidirectionally.

[0015] S3, Outbound

[0016] Based on the peeling action of the peeling roller, the fiber web moves forward and downward between the peeling roller and the pressure roller. At the same time, the rotation of the pressure roller keeps the fiber web in contact with the pressure roller, and the fiber web is synchronously transferred to the exit channel formed by the pressure roller and the annular conveyor belt, so as to exit the web under the same peeling force and the same exit angle.

[0017] According to a specific embodiment and preferred aspect of the present invention, in step S2, the single coagulation roller and the stripping roller rotate synchronously, in the same direction, and at the same speed. That is, the two rollers are synchronously driven to keep their speeds equal at all times, thereby ensuring that the fibers can maintain stretching and compression in the copolymerization zone, and copolymerization can be carried out regardless of the rotational speed of the coagulation roller. Therefore, the resulting web output efficiency can be greatly improved.

[0018] Preferably, in step S2, based on the axial orthogonal projection of the single condensing roller, the center of the single condensing roller is located above and behind the center of the stripping roller, and the formed copolymerization zone is located above the line connecting the two centers. Based on the positional layout of the copolymerization zone, not only are there good stretching and compression copolymerization effects, but the condensation requirements of the single condensing roller for the fiber web are also met, thereby optimizing the structure of the condensing roller and changing the web exit process.

[0019] Furthermore, the bottom of the copolymerization zone lies on the line connecting the two centers. This position represents the optimal copolymerization state.

[0020] According to another specific embodiment and preferred aspect of the invention, in step S3, the surface of the fiber web bonded to the pressure roller is subjected to negative pressure adsorption, and the negative pressure adsorption area is located between the rear side and the bottom of the pressure roller. The roller surface of the pressure roller rotates relative to the negative pressure adsorption area at a constant position. Based on the moving cyclic out-positioning and replenishment method, the adsorption area is kept stationary, and the fiber web can continuously form a flowing transfer under the same negative pressure.

[0021] Preferably, the negative pressure area used needs to cover the exit contact area formed between the feed roller and the stripping roller. Here, based on the coverage of the area, the portion near the exit contact area can maintain its tendency to move away from the stripping roller during transfer.

[0022] In some specific embodiments, the center of the pressure roller is located below and in front of the center of the peeling roller, and the pressure roller includes a hollow roller shaft and a ventilated roller rotatably mounted on the roller shaft, wherein a negative pressure component for forming a negative pressure area is fixedly installed inside the ventilated roller. With the roller shaft as the installation reference, the negative pressure area is kept in a constant position while the ventilated roller rotates simultaneously, thus meeting the requirement of the fiber web detaching from the peeling roller.

[0023] Furthermore, the end of the roller shaft is open, and a negative pressure hole is formed in the circumferential direction to communicate with the negative pressure area. In the transfer fiber web of the pressure roller, the negative pressure suction formed at the end of the roller shaft is used to keep the negative pressure area in a negative pressure state.

[0024] Furthermore, in the transfer fiber web of the pressure roller, both ends of the roller shaft are simultaneously subjected to negative pressure suction. Based on the simultaneous negative pressure suction at both ends, a uniform negative pressure can be quickly achieved in the negative pressure chamber.

[0025] According to another specific embodiment and preferred aspect of the present invention, the negative pressure assembly includes end sealing plates, an upper sealing plate, a lower sealing plate, and an arc-shaped filter plate fixed to both ends of the roller shaft. The arc-shaped filter plate seals the edge of the negative pressure cavity formed by the end sealing plates, the upper sealing plate, and the lower sealing plate, and the arc-shaped filter plate has filter holes. The inner wall of the ventilated roller is in contact with the outer surface of the arc-shaped filter plate. The sealing of the edge of the adsorption cavity formed by the arc-shaped filter plate prevents negative pressure leakage from the connecting edge of the adsorption cavity, thereby eliminating the adverse effects of uneven stress, damage, or breakage during fiber web transfer caused by instability in the adsorption area.

[0026] Preferably, the lower sealing plate extends vertically downward from the bottom of the roller shaft; the rear end of the upper sealing plate is located above the front side of the web receiving area. The negative pressure area formed in this way can cover the entire web exiting process and can pre-form the web separation tendency, so that the web can exit the stripping roller more smoothly, while exiting the web under the same stripping force and the same exit angle.

[0027] In some specific embodiments, the ventilated rollers and the annular conveyor belt move in opposite directions to keep the fiber web, which has lost negative pressure, exiting forward in the same direction and at the same speed. This ensures that the exit direction and the force direction are aligned, resulting in smoother and faster exit, thereby increasing exit efficiency.

[0028] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

[0029] In the existing carding machine's fiber web formation process, the required speed difference (proportional reduction in linear velocity, i.e., deceleration) between the two condensing rollers prevents a significant increase in the overall web-out speed. Furthermore, the continuous winding method between the two condensing rollers, where the upper and lower parts are wound separately (i.e., bidirectional and continuous stretching and condensation), results in a predominantly stretching condensation process, hindering effective stretching and compression copolymerization and preventing the formation of an optimal fiber web strength. Additionally, if the peeling force and exit angle cannot be maintained consistently during peeling by the peeling roller, uneven fiber web thickness and cohesion can easily occur, severely impacting the quality of the finished web. This invention cleverly solves these shortcomings by comprehensively designing the carding machine's web-out process. Using this carding machine's web-out process, firstly, the carded fibers are transferred from the cylinder to the lower part of the doffer, and then, based on the doffer, the fibers are transferred forward and upward to the condensing roller. Secondly, a single condensing roller is selected for condensation, with the fibers stretched unidirectionally forward along the roller and entering the single condensing roller. After the copolymerization zone between the copolymerizing roller and the peeling roller, the fibers are stretched and compressed in the copolymerization zone, while the peeling roller maintains the same movement path to unidirectionally peel the fiber web layer in the copolymerization zone, and transfers it unidirectionally forward and upward; finally, based on the peeling formed by the peeling roller, the fiber web moves forward and downward into the space between the peeling roller and the pressure roller, while the rotation of the pressure roller keeps the fiber web in contact with the pressure roller, and the fiber web is synchronously transferred with the pressure roller to the exit channel formed by the pressure roller and the annular conveyor belt, so as to exit the web under the same peeling force and the same exit angle. Therefore, the present invention is based on The copolymerization zone formed by the single coagulation roller and the stripping roller not only optimizes the structure of the coagulation roller (coagulation can be carried out with just a single roller), but also maintains unidirectional movement to carry out stretching and compression, thereby enhancing the strength of the produced web. At the same time, it is not affected by speed, which not only meets the needs of high-speed web production, but also overcomes the defect of insufficient web quality caused by improper control of roller speed difference. On the other hand, it can maintain the same stripping force and the same web exit angle, improve the thickness and uniformity of fiber cohesion, enhance the longitudinal and transverse strength ratio of the fiber web, and improve the quality of the produced web. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the carding machine web output structure based on single coagulation and uniaxial stretching and compression copolymerization according to the present invention;

[0031] Figure 2 for Figure 1 Front view diagram;

[0032] Figure 3 for Figure 1 Right view of the medium-pressure feed roller;

[0033] Figure 4 for Figure 3Schematic diagram of the sectional view along the middle AA direction (enlarged);

[0034] Figure 5 for Figure 3 Schematic diagram of the BB-direction section (enlarged);

[0035] Among them: 1. Cylinder; 2. Doffer; 3. Single coagulation roller; 4. Stripping roller; 5. Pressure roller; 50. Roller shaft; 51. Air-permeable roller; 6. Circular conveyor belt; 7. Negative pressure assembly; 70. End sealing plate; 71. Upper sealing plate; 72. Lower sealing plate; 73. Arc-shaped filter plate; a. Fiber transfer zone; b. Unidirectional coagulation zone; c. Copolymerization zone; d. Outgoing web receiving zone; e. Outgoing web channel; w. Fiber web. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, "above" or "below" a second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of a second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" a second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly on the other element or there may be an intermediate element present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element present. The terms "vertical," "horizontal," "above," "below," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible embodiments.

[0041] like Figures 1 to 5 As shown, the carding machine web exiting process based on single cohesion and unidirectional stretching and compression copolymerization in this embodiment adopts a carding machine web exiting structure including a cylinder 1, a doffer 2, a single cohesion roller 3, a stripping roller 4, and a pressure roller 5 arranged sequentially from back to front; and an annular conveyor belt 6 located below the pressure roller 5. A fiber transfer zone a is formed between the cylinder 1 and the doffer 2, a unidirectional cohesion zone b is formed between the doffer 2 and the single cohesion roller 3, a copolymerization zone c is formed between the single cohesion roller 3 and the stripping roller 4, a web exit receiving zone d is formed between the stripping roller 4 and the pressure roller 5, and a web exiting channel e is formed between the pressure roller 5 and the annular conveyor belt 6.

[0042] Specifically, cylinder 1 has the largest diameter and its center is at the highest position. Then, the centers of the single coagulating roller 3, stripping roller 4, and doffer 2 are arranged sequentially from top to bottom, with the winding arc length formed by the single coagulating roller being at least half its circumference. This arrangement of single coagulating rollers not only provides the necessary coagulation space but also ensures that the coagulation is not limited by the roller's own rotational speed, providing the necessary conditions for high-speed production. In this example, the diameters of the single coagulating roller 3 and stripping roller 4 are equal, facilitating installation. The bottom of the copolymerization zone c is located on the line connecting the centers of the single coagulating roller 3 and stripping roller 4. Based on the copolymerization position limitation, not only is the fiber effectively stretched, but effective compression can also be implemented in the copolymerization zone. Therefore, the fiber web achieves a better ratio of longitudinal to transverse strength while also improving the quality of the fiber web (e.g., density and thickness meet processing requirements).

[0043] In this example, the fiber feed end and copolymerization end on the single coagulating roller 3 are aligned horizontally. The centers of the single coagulating roller 3, the peeling roller 4, and the doffer 2 are evenly spaced from top to bottom. The distance between the doffer 2 and the peeling roller 4 is equal to the outer diameter of the single coagulating roller 3. Based on the layout of each roller, not only is the structure compact, but the copolymerization through simultaneous stretching and compression after stretching improves the uniformity of the fiber web. At the same time, the probability of fiber damage or breakage is reduced during unidirectional transfer.

[0044] In some specific embodiments, the single condensing roller 3 and the stripping roller 4 are connected by a synchronous transmission component. In short, the condensing roller and the stripping roller move synchronously, at the same speed, and in the same direction, that is, there is no speed difference causing fiber traction.

[0045] In some other embodiments, the pressure roller 5 is a self-rotating air-permeable roller, and the single-coagulation net structure also includes a negative pressure component 7 disposed inside the air-permeable roller, wherein the adsorption area formed by the negative pressure component 7 is located between the rear side and the bottom of the air-permeable roller.

[0046] Specifically, the air-permeable roller includes a hollow roller shaft 50 and an air-permeable roller 51 rotatably mounted on the roller shaft 50. A negative pressure component 7, forming a negative pressure area, is fixedly installed inside the air-permeable roller 51. Using the roller shaft as the mounting reference, the negative pressure area remains at a constant position while the air-permeable roller rotates simultaneously, thus meeting the requirement for the fiber web to detach from the peeling roller. Simultaneously, the formed negative pressure adsorption maintains the fiber web entering the web exit channel e under the same force, further improving the uniformity of the fiber web thickness and facilitating the detachment of the fiber web from the peeling roller.

[0047] In some specific embodiments, the end of the roller 50 is open, and a negative pressure hole communicating with the negative pressure region is formed circumferentially. In the transfer fiber web of the pressure roller 5, negative pressure suction is formed at the end of the roller to maintain the negative pressure region in a negative pressure state. Furthermore, in the transfer fiber web of the pressure roller 5, both ends of the roller 50 simultaneously perform negative pressure suction. Based on simultaneous negative pressure suction at both ends, a uniform negative pressure formed in the negative pressure chamber can be quickly achieved. The negative pressure assembly 7 includes end sealing plates 70 fixed at both ends of the roller shaft 50, an upper sealing plate 71 for connecting the upper edges of the two end sealing plates 70, a lower sealing plate 72 for connecting the lower edges of the two end sealing plates 70, and an arc-shaped filter plate 73 attached to the inner wall of the ventilating roller 51. The arc-shaped filter plate 73 is connected to the end sealing plates 70, the upper sealing plate 71, and the lower sealing plate 72 from its side and end edges, respectively. The end sealing plates 70, the upper sealing plate 71, the lower sealing plate 72, the roller shaft 50, and the arc-shaped filter plate 73 form an adsorption chamber. The ventilating roller 51 is rotatably arranged relative to the negative pressure assembly. The roller shaft 50 is provided with negative pressure ventilation holes that communicate with the adsorption chamber. Based on the relatively fixed adsorption chamber formed by multiple sealing plates, under the premise of constant negative pressure adsorption position, the relatively rolling contact with the inner wall of the air-permeable roller allows for continuous circulation of outgoing and replenishing positions based on the rotation of the air-permeable roller, while maintaining a constant adsorption area. This ensures that the fiber web entering the web-out receiving area is consistently in contact with the air-permeable roller and synchronously transferred to the web-out channel with it. Simultaneously, the arc-shaped filter plate constitutes the adsorption port of the adsorption chamber. Therefore, the sealing of the adsorption chamber edge formed by the arc-shaped filter plate prevents negative pressure leakage at the adsorption chamber connection edge, eliminating the adverse effects of uneven force, damage, or breakage during fiber web transfer caused by instability in the adsorption area. Specifically, the arc-shaped filter plate 73 has multiple rows of adsorption holes distributed along the arc length direction.

[0048] Furthermore, the upper sealing plate 71 extends rearward and upward from the roller shaft 50; the lower sealing plate 72 extends vertically downward from the bottom of the roller shaft 50; and the end sealing plate 70 closes the opposite ends of the upper sealing plate 71 and the lower sealing plate 72. The rear end of the upper sealing plate 71 is located above and to the side of the web exit receiving area d. Based on the position of the upper sealing plate 71, the negative pressure adsorption completely covers the entire web exit receiving area d. Therefore, before the fiber web enters the web exit receiving area d, the negative pressure adsorption maintains the relative movement tendency of the fiber web to detach from the stripping roller, thus preventing fiber entanglement caused by the fiber web detaching from the stripping roller.

[0049] In summary, the carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization in this embodiment includes the following steps:

[0050] S1, Transfer

[0051] After being combed, the fibers pass through the fiber transfer zone a from cylinder 1 and are transferred to the lower part of doffer 2. Based on doffer 2, the fibers are transferred forward and upward to the single condensing roller 3 in the unidirectional condensing zone b.

[0052] S2, Unidirectional Coagulation

[0053] After the fiber is stretched forward unidirectionally along the single coagulation roller 3 and enters the copolymerization zone c between the single coagulation roller 3 and the peeling roller 4, the fiber is stretched and compressed in the copolymerization zone c. At the same time, the peeling roller 4 maintains the same moving path and peels the fiber web layer in the copolymerization zone c unidirectionally, and transfers forward and upward unidirectionally.

[0054] S3, Outbound

[0055] Based on the peeling formed by the peeling roller 4, the fiber web moves forward and downward into the exit receiving area d between the peeling roller 4 and the pressure roller 5. At the same time, based on the rotation of the pressure roller 5, the fiber web is kept in contact with the pressure roller 5, and the fiber web w is synchronously transferred to the exit channel e formed by the pressure roller 5 and the annular conveyor belt 6, so as to exit the web under the same peeling force and the same exit angle.

[0056] In step S2 of some specific embodiments, the single coagulation roller 3 and the stripping roller 4 rotate synchronously, in the same direction, and at the same speed. That is, the two rollers are synchronously driven to ensure that their speeds remain equal, thereby ensuring that the fibers remain stretched and compressed in the copolymerization zone c. Copolymerization can be carried out regardless of the rotational speed of the coagulation roller, thus significantly improving the web production efficiency. Then, in step S2, based on the axial orthogonal projection of the single coagulation roller 3, the center of the single coagulation roller 3 is located above and behind the center of the stripping roller 4, and the bottom of the formed copolymerization zone c is located on the line connecting the two centers. This positional layout of the copolymerization zone c not only provides good stretching and compression copolymerization effects but also meets the coagulation requirements of the single coagulation roller 3 for the fiber web, thereby optimizing the structure of the coagulation roller and changing the web production process. Simultaneously, the bottom position of the copolymerization zone ensures it is in an optimal copolymerization state.

[0057] In step S3 of some specific embodiments, the surface of the fiber web is bonded to the pressure roller using negative pressure adsorption, and the negative pressure adsorption area is located between the rear side and bottom of the pressure roller 5. The roller surface of the pressure roller 5 rotates relative to the negative pressure adsorption area at a constant position. Based on the moving cycle of output and replenishment, the adsorption area remains stationary, and the fiber web w can continuously form a flowing transfer under the same negative pressure. The negative pressure area used needs to cover the output receiving area d formed between the pressure roller 5 and the peeling roller 4. Here, based on the coverage of the area, the part near the output receiving area d can maintain the tendency to move away from the peeling roller for transfer. The center of the pressure roller 5 is located below and in front of the center of the peeling roller 4. At the same time, the ventilated roller 51 moves towards the annular conveyor belt 6 to keep the fiber web w, which has lost negative pressure, forward at the same direction and speed. In this way, the output direction and the force direction are consistent, so that the output is smoother and faster, thereby increasing the output efficiency.

[0058] In summary, after adopting this carding machine's web-out process, firstly, the carded fibers are transferred from the cylinder to the lower part of the doffer, and based on the doffer, the fibers are transferred forward and upward to the condensing roller; secondly, a single condensing roller is selected for condensation, and the fibers are stretched unidirectionally forward along the condensing roller and enter the copolymerization zone between the single condensing roller and the stripping roller. In the copolymerization zone, the fibers are stretched and compressed, while the stripping roller maintains the same movement path and unidirectionally strips the fiber web layer in the copolymerization zone, transferring it unidirectionally forward and upward; finally, based on the stripping formed by the stripping roller, the fiber web moves forward and downward between the stripping roller and the pressure roller, while the rotation of the pressure roller keeps the fiber web adhered to the pressure roller. Furthermore, the fiber web is synchronously transferred to the exit channel formed by the pressure roller and the annular conveyor belt along with the pressure roller, so that it exits the web under the same peeling force and the same exit angle. Therefore, this invention, on the one hand, is based on the co-aggregation zone formed by a single coagulation roller and a peeling roller, which not only optimizes the structure of the coagulation roller (coagulation can be carried out with just a single roller), but also maintains stretching and compression in unidirectional movement to enhance the strength of the exited web, while being unaffected by speed. This not only meets the needs of high-speed web production, but also overcomes the defect of insufficient fiber web quality caused by improper control of roller speed difference. On the other hand, it can maintain the same peeling force and the same exit angle for web exit, improving the fiber web. The thickness and fiber cohesion uniformity enhance the longitudinal and transverse strength ratio of the fiber web, improving the quality of the finished web. Thirdly, the single coagulation roller and the stripping roller rotate synchronously, in the same direction, and at the same speed. This means that the two rollers are synchronously driven to maintain equal speeds, ensuring that the fibers remain stretched and compressed in the copolymerization zone. Copolymerization can be achieved regardless of the rotational speed of the coagulation roller, thus significantly improving the web production efficiency. Fourthly, the center of the single coagulation roller is located above and behind the center of the stripping roller, and the resulting copolymerization zone is located above the line connecting the two centers (the bottom of the copolymerization zone is located on the line connecting the two centers, which is the optimal copolymerization state). Based on the location layout of the copolymerization zone, it not only has good stretching and compression copolymerization effects, but also meets the coagulation requirements of the single coagulation roller for the fiber web, thereby optimizing the structure of the coagulation roller and changing the web exit process; the fifth aspect is that the fiber feed end and copolymerization end on the single coagulation roller are aligned in the horizontal direction, and the centers of the single coagulation roller, the stripping roller, and the doffer are distributed at equal intervals from top to bottom. The distance between the doffer and the stripping roller is equal to the outer diameter of the single coagulation roller. That is, based on the layout of each roller, it is not only compact in structure, but also improves the uniformity of the fiber web by copolymerization through synchronous stretching and compression after stretching. At the same time, it reduces the probability of fiber damage or breakage during unidirectional transfer.Sixthly, the surface of the fiber web bonding pressure roller is subjected to negative pressure adsorption, and the negative pressure adsorption area is between the rear side and bottom of the pressure roller. The roller surface of the pressure roller rotates relative to the negative pressure adsorption area at a constant position. Based on the moving cycle of exit and replenishment, the adsorption area remains stationary, and the fiber web can continuously form a flowing transfer under the same negative pressure. At the same time, the negative pressure area used needs to cover the web exit receiving area formed between the pressure roller and the peeling roller. Here, based on the coverage of the area, the part near the web exit receiving area can maintain the movement trend of detaching from the peeling roller for transfer. Seventhly, with the roller shaft as the installation reference, the negative pressure area is kept in a constant position while the air-permeable roller rotates simultaneously. Therefore, the requirement of the fiber web detaching from the peeling roller is met. At the same time, based on the simultaneous negative pressure suction at both ends, the uniform negative pressure formed in the negative pressure chamber can be quickly achieved. Eighthly, the edge of the negative pressure chamber formed by the end sealing plate, the upper sealing plate, and the lower sealing plate is sealed by the arc-shaped filter plate, and air filter holes are formed on the arc-shaped filter plate. The inner wall of the air-permeable roller is attached to the outer side of the arc-shaped filter plate. The sealing of the adsorption chamber edge formed by the arc-shaped filter plate prevents negative pressure leakage from the adsorption chamber connection edge, thus eliminating the adverse effects of uneven force, damage, or breakage during fiber web transfer caused by instability in the adsorption area. Ninthly, the lower sealing plate extends vertically downwards from the bottom of the roller shaft; the rear end of the upper sealing plate is located above the front side of the web exit receiving area. This creates a negative pressure area that covers the entire fiber web exit process and pre-establishes a tendency for the fiber web to detach, making the fiber web detach from the stripping roller more smoothly, while maintaining the same stripping force and exit angle. Tenthly, the ventilated roller moves in opposite directions with the circular conveyor belt to keep the fiber web, now free of negative pressure, exiting forward in the same direction and at the same speed. This ensures that the exit direction and force direction are aligned, resulting in smoother and faster exit, thereby increasing exit efficiency.

[0059] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization, characterized in that, It includes the following steps: S1, Transfer After being combed, the fibers are transferred from the cylinder to the lower part of the doffer, and then transferred forward and upward to the condensing roller based on the doffer; S2, Unidirectional Coagulation A single condensing roller is selected for condensation. The fiber is stretched forward unidirectionally along the condensing roller and enters the copolymerization zone between the single condensing roller and the stripping roller. The fiber is stretched and compressed in the copolymerization zone. At the same time, the stripping roller maintains the same movement path and unidirectionally strips the fiber web layer in the copolymerization zone, and transfers it forward and upward unidirectionally. In the axial orthographic projection of the single condensing roller, the center of the single condensing roller is located above and behind the center of the stripping roller, and the formed copolymerization zone is located above the line connecting the two centers. The bottom of the copolymerization zone is located on the line connecting the two centers. S3, Outbound Based on the peeling action of the peeling roller, the fiber web moves forward and downward between the peeling roller and the pressure roller. Simultaneously, the rotation of the pressure roller keeps the fiber web in contact with it. The fiber web is also transferred synchronously with the pressure roller to the exit channel formed by the pressure roller and the circular conveyor belt, so that it exits the web under the same peeling force and the same exit angle. The surface of the fiber web in contact with the pressure roller is subjected to negative pressure adsorption, and the negative pressure adsorption area is located between the rear side and the bottom of the pressure roller. The negative pressure area used needs to cover the exit receiving area formed between the pressure roller and the peeling roller. The roller surface of the pressure roller rotates relative to the negative pressure adsorption area at a constant position.

2. The carding machine web-out process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 1, characterized in that, In step S2, the single condensation roller and the stripping roller rotate synchronously, in the same direction, and at the same speed.

3. The carding machine web-out process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 1, characterized in that, The center of the pressure roller is located in front of and below the center of the stripping roller.

4. The carding machine web-out process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 1, characterized in that, The pressure roller includes a hollow roller shaft and a ventilated roller rotatably mounted on the roller shaft, wherein a negative pressure component for forming a negative pressure area is fixedly installed inside the ventilated roller.

5. The carding machine web-out process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 4, characterized in that, The end of the roller shaft is open, and a negative pressure hole is formed in the circumferential direction to communicate with the negative pressure area. In the transfer fiber web of the pressure roller, the negative pressure suction formed at the end of the roller shaft is used to keep the negative pressure area in a negative pressure state.

6. The carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 5, characterized in that, In the transfer fiber web of the pressure roller, negative pressure is simultaneously applied to both ends of the roller shaft for suction.

7. The carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 6, characterized in that, The negative pressure assembly includes an end sealing plate, an upper sealing plate, a lower sealing plate, and an arc-shaped filter plate fixed at both ends of the roller shaft. The edge of the negative pressure cavity formed by the end sealing plate, the upper sealing plate, and the lower sealing plate is sealed by the arc-shaped filter plate, and air filter holes are formed on the arc-shaped filter plate. The inner wall of the air-permeable roller is in contact with the outer side of the arc-shaped filter plate.

8. The carding machine web exiting process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 7, characterized in that, The lower sealing plate extends vertically downward from the bottom of the roller.

9. The carding machine screen exiting process based on single cohesion and uniaxial stretching and compression copolymerization according to claim 7 or 8, wherein the rear end of the upper sealing plate is located above the front side of the screen exiting receiving area.

10. The carding machine web-out process based on single-cohesion and uniaxial stretching and compression copolymerization according to claim 9, characterized in that, The breathable roller moves in opposite directions to the circular conveyor belt to keep the fiber web, which has lost negative pressure, moving forward at the same direction and speed.

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