A drafting system for a comber

Abstract

The present invention belongs to the field of spinning machinery equipment, and particularly relates to a drafting system of a comber. The system includes: a frame, a mounting seat, a feeding mechanism and a drafting mechanism. Among them, the feeding mechanism mainly includes a feeding roller, a second roller and a third cylinder; the drafting mechanism mainly includes a drafting roller, a first roller and a first cylinder, as well as a first pressure roller, a second pressure roller and a second cylinder. After the cotton sliver combed by the comber is fed into the drafting mechanism through the feeding mechanism in the present invention, the cotton sliver is broken by using the tension ratio between the first pressure roller and the drafting roller, and finally the combed cotton sliver segments with uniform length are output for subsequent cotton fiber dyeing process, realizing the simplification of the process and reducing the production cost.

Description

Technical Field

[0001] The present invention belongs to the field of spinning machinery equipment, and particularly relates to a drafting system of a comber. Background Art

[0002] At present, cotton yarns are mainly divided into natural yarns, colored spun yarns, and dyed yarns. Among them, natural yarns refer to yarns that maintain the natural color of fibers and are used for weaving plain greige fabrics; colored spun yarns are yarns formed by first dyeing fibers and then spinning them, with firm and full color, implicit, natural, and layered colors in textiles; dyed yarns are formed by dyeing the already formed yarns through a dyeing process, with relatively dull and heavy colors, and are prone to forming color knots, etc., which have a greater impact on the quality of the yarn and are likely to cause the yarn to break; however, the production cost of colored spun yarns is higher than that of dyed yarns.

[0003] To improve the quality of yarns, modern processes tend to dye the combed cotton fibers instead of the original cotton yarns, that is, colored spun yarns replace dyed yarns. At present, the output form of combers is canister winding: that is, the cotton fibers that have been carded and short fibers removed are extruded and bundled into strips, and then wound on a reel and placed in a canister. If colored spun yarns are to be produced, the fiber dyeing process before the spinning process requires special equipment to loosen and break the combed cotton strips into small segments, and then bale and dye them, which thus additionally increases the consumption of working hours and resources and increases the cost of preparing colored spun yarns. If the comber can produce cotton fibers directly for dyeing, the process can be reduced, costs can be saved, and production efficiency can be greatly improved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a drafting system of a comber, aiming to overcome the defect in the colored spinning process that after the combed cotton strips are drawn and wound on a reel by the existing comber, additional processes are still required to loosen and break the cotton strips to provide a material basis for fiber dyeing.

[0005] To achieve the above invention purpose, the present invention adopts the following technical solutions:

[0006] A drafting system of a comber, comprising:

[0007] A frame for supporting the entire drafting system;

[0008] The mounting base is provided at the upper end of the frame. The mounting base includes a drafting mounting portion and a feeding mounting portion. The cross-sections of both the drafting mounting portion and the feeding mounting portion are in a "U" shape. Among them, several mounting holes are symmetrically provided on the two "U" shaped sides of the drafting mounting portion, and several mounting holes are also symmetrically provided on the two "U" shaped sides of the feeding mounting portion. On this basis, a drafting mechanism is provided above the drafting mounting portion, and a feeding mechanism is provided above the feeding mounting portion. After the sliver is fed into the drafting mechanism through the feeding mechanism, the sliver is broken by the drafting mechanism, and finally a combed sliver segment with a unified length is output. Among them:

[0009] The feeding mechanism includes a feeding roller. A pair of feeding roller mounting plates are provided at both ends of the feeding roller. The feeding roller is mounted in the middle of the feeding mounting portion through a pair of the feeding roller mounting plates. In addition, a second top roller is provided above the feeding roller, and a set of third air cylinders is provided above the second top roller. Among them, the second top roller and the set of third air cylinders are provided on the second rocker cover. By the third air cylinder pressing the second top roller towards the feeding roller direction, while providing the clamping force for the sliver, the sliver is fed into the drafting mechanism;

[0010] The drafting mechanism includes a drafting roller. The drafting roller is provided at the input end of the drafting mechanism. A pair of drafting roller mounting plates are provided at both ends of the drafting roller. The drafting roller is mounted at one end of the drafting mounting portion through a pair of the drafting roller mounting plates. In addition, a first top roller is provided above the drafting roller, and a set of first air cylinders is provided above the first top roller. Among them, the first top roller and the set of first air cylinders are provided on the first rocker cover. After the sliver is fed between the first top roller and the drafting roller through the feeding mechanism, by the first air cylinder pressing the first top roller towards the drafting roller direction, while increasing the clamping force for the sliver, the sliver starts to enter the drafting mechanism;

[0011] On this basis, the drafting mechanism further includes a first pressure roller. The first pressure roller is provided at the output end of the drafting mechanism. A second pressure roller is provided above the first pressure roller. A pair of pressure roller mounting plates are symmetrically provided at both ends of the first pressure roller and the second pressure roller. The first pressure roller and the second pressure roller are mounted in the middle of the drafting mounting portion through a pair of the pressure roller mounting plates. In addition, a set of second air cylinders is provided above the second pressure roller. The set of second air cylinders is provided on the first rocker cover. In the working state, by the first air cylinder and the second air cylinder respectively pressing the first top roller and the second pressure roller towards the drafting roller and the first pressure roller directions, while increasing the clamping force for the sliver, by controlling the tension ratio between the first pressure roller and the drafting roller to be between 10 and 20 times, the drafting mechanism breaks the sliver and outputs a combed sliver segment with a unified length;

[0012] Among them, the feeding roller, the drafting roller and the first pressure roller are all powered by the headstock motor, and the power is transmitted to the feeding roller, the drafting roller and the first pressure roller through flat belt transmission, and there is a small tension between the feeding roller and the drafting roller; the first cylinder, the second cylinder and the third cylinder are respectively controlled by three cylinder valves.

[0013] Preferably, a set of first supports are symmetrically arranged on the inner sides of a pair of the drafting roller mounting plates respectively;

[0014] Two long slots are provided at the bottom ends of a pair of the pressure roller mounting plates, and the pressure roller mounting plates are mounted in the middle of the drafting mounting part through the cooperation of the long slots, the mounting holes and bolts. In addition, grooves are provided at the top ends of a pair of the pressure roller mounting plates, and the second pressure roller is arranged inside the grooves, so that the second pressure roller is detachably mounted on the pressure roller mounting plates.

[0015] Preferably, one end of the first swing cover is provided with a set of first hooks that cooperate with a set of the first supports, and a first handle is further provided on one side of the first hooks. In addition, adjusting holes are provided on both sides of the middle of the first swing cover, and the adjusting holes are long strip-shaped through holes. Through the cooperation of the adjusting holes and bolts, a set of the second cylinders are arranged in the middle of the first swing cover. Among them, the cylinder bodies of a set of the second cylinders are connected to the first swing cover, and the output ends of a set of the second cylinders respectively abut against both ends of the second pressure roller;

[0016] On this basis, one side of the other end of the first swing cover is connected to one end of the first support rod through a first pin shaft, and the other side of the other end of the first swing cover is hinged to the output end of the pneumatic strut. The other end of the first support rod is mounted on the drafting mounting part, and the cylinder body end of the pneumatic strut is hinged to the drafting mounting part. When the first handle is pushed to lift the first swing cover with the first pin shaft as the axis, a loading and unloading basis is provided for the second pressure roller. At the same time, the first cylinder, the second cylinder and the first leather roller all move along with the first swing cover. At this time, the preliminary loading of the sliver and the debugging and maintenance of the drafting mechanism are carried out.

[0017] Preferably, the drafting mechanism further includes a first cotton guiding plate, a second cotton guiding plate and a cleaning device;

[0018] The first cotton guiding plate is arranged between the drafting roller and the first pressure roller and is used for providing support and guidance for the sliver input into the drafting mechanism;

[0019] The second cotton guiding plate is arranged on one side of the output end of the drafting mechanism and is used for supporting and guiding the output sliver segments with uniform length;

[0020] The cleaning device includes a first cleaning plate, a second cleaning plate, a first air suction box and a second air suction box. The first cleaning plate and the second cleaning plate are respectively arranged below the drafting roller and the first pressure roller, and are respectively lapped on the drafting roller and the first pressure roller to clean the cotton lint attached to the drafting roller and the first pressure roller. In addition, the first air suction box is arranged above the first cotton guiding plate and is installed on the first swing cover. The second air suction box is arranged below the first cleaning plate and the second cleaning plate. Both the first air suction box and the second air suction box are connected to a negative pressure source. Through negative pressure suction, the flying fibers and cotton lint generated during the drafting of the cotton sliver by the drafting mechanism are collected and processed.

[0021] Furthermore, a set of cotton guiding blocks are symmetrically arranged on both sides of the first cotton guiding plate to restrict the moving direction of the cotton sliver drafted by the drafting roller. An adjustable support piece is arranged below the second cotton guiding plate to support and adjust the inclination degree of the second cotton guiding plate.

[0022] Preferably, the feeding mechanism further includes a third cotton guiding plate and a fourth cotton guiding plate. The third cotton guiding plate is arranged between the drafting roller and the feeding roller, and the fourth cotton guiding plate is arranged on the other side of the feeding roller. Limit plates are arranged on both sides of the third cotton guiding plate and the fourth cotton guiding plate. The third cotton guiding plate and the fourth cotton guiding plate limit, guide and support the cotton sliver during the feeding process of the feeding mechanism.

[0023] Preferably, a set of second supporting feet are symmetrically arranged on the inner sides of a pair of the feeding roller mounting plates respectively.

[0024] One end of the second swing cover is provided with a set of second hooks that cooperate with a set of the second supporting feet. A second handle is further provided on one side of the second hook. On this basis, both sides of the other end of the second swing cover are respectively connected to one end of two second support rods through second pins. The other ends of the two second support rods are installed on the feeding mounting part. When the second handle is pushed to lift the second swing cover with the second pin as the axis, the second leather roller and the third cylinder both move along with the second swing cover. At this time, the preliminary feeding of the cotton sliver and the debugging and maintenance of the feeding mechanism are carried out.

[0025] Further, the first hook further includes a first rotating shaft, and the first hook is connected to one end of the first swing cover through the first rotating shaft. When the first swing cover is lifted, the first hook is rotated around the first rotating shaft, so that the first hook is separated from the first supporting foot, that is, the first swing cover is lifted; in addition, the second hook further includes a second rotating shaft, and the second hook is connected to one end of the second swing cover through the second rotating shaft. When the second swing cover is lifted, the second hook is rotated around the second rotating shaft, so that the second hook is separated from the second supporting foot, that is, the second swing cover is lifted.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention uses the head motor to provide rotational power for the first pressure roller and the drafting roller, and transmits the power to the first pressure roller and the drafting roller respectively through flat belt transmission, controls the tension ratio existing between the first pressure roller and the drafting roller, and uses this tension ratio to break and output the sliver fed into the drafting mechanism. Furthermore, the second cotton guiding plate is used to collect the sliver segments of uniform length, providing a material basis for the subsequent fiber dyeing process, which can well solve the problems of increased working hours and resource consumption caused by the need for additional processes to loosen and break the sliver before fiber dyeing, and increase the cost of preparing colored spun yarn; in addition, the present invention also uses the long slots on the pressure roller mounting plate to provide an installation basis for the pressure roller mounting plate to be position-adjustable. Among them, since the first pressure roller and the second pressure roller are both arranged on the pressure roller mounting plate, they can follow the position adjustment of the pressure roller mounting plate, and thus the distance between the first pressure roller and the drafting roller is adjustable. That is, by adjusting the position of the pressure roller mounting plate, the length of the sliver segments that can be output by the present invention can be adjusted, improving the practicability of the present invention; the present invention also respectively sets a first swing cover and a second swing cover above the drafting mechanism and the feeding mechanism to provide protection for the drafting mechanism and the feeding mechanism. At the same time, the present invention sets the first swing cover and the second swing cover to be flip-type, which is convenient for the staff to debug and maintain the drafting mechanism and the feeding mechanism, and is also convenient for monitoring the state of the sliver during the working state. In addition, a pneumatic strut is provided at the end of the first swing cover, which is convenient for the staff to lift the first swing cover, saving time and effort. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is the overall structure diagram of the present invention;

[0030] Figure 2 This is a partial front view schematic diagram of the present invention;

[0031] Figure 3 This is a partial front view sectional schematic diagram of the present invention. Detailed implementation manners

[0032] 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 making creative efforts shall fall within the protection scope of the present invention.

[0033] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying 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 thus cannot be understood as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" 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.

[0034] Due to the increasing requirements for yarn quality by people nowadays, there is a trend in modern technology to replace dyed yarn with colored-spun yarn. However, in the current spinning process, for the cotton fiber dyeing process, after the cotton sliver combed by the comber is drawn into a roll, additional processes are added to loosen and break the cotton sliver, so that the cost of the colored-spun yarn process is relatively high.

[0035] Therefore, in view of this problem, the inventor of the present invention combines the process of loosening and breaking the cotton sliver that provides the material basis for fiber dyeing with the drafting system of the comber, and designs a drafting system of the comber, so that the comber directly outputs combed cotton sliver segments with uniform length for subsequent cotton fiber dyeing, which can well solve the above-mentioned defects and problems.

[0036] Next, the technical solutions of the present invention will be described in detail in conjunction with the accompanying drawings.

[0037] A drafting system of a comber according to the present invention includes: a frame 1, a mounting base 2, a feeding mechanism 3, and a drafting mechanism 4. After the sliver combed by the comber is fed into the drafting mechanism 4 through the feeding mechanism 3 in the present invention, the sliver is broken by the tension ratio between the first pressure roller 402 and the drafting roller 401, and finally the sliver segments with uniform length are output for the subsequent cotton fiber dyeing process, realizing the simplification of the process and reducing the production cost.

[0038] In this technical solution, as Figure 1 shown, the frame 1 is used to support the entire drafting system; the mounting base 2 is arranged at the upper end of the frame 1. The mounting base 2 includes a drafting mounting part 201 and a feeding mounting part 202. The cross-sections of the drafting mounting part 201 and the feeding mounting part 202 are both in a "U" shape. Among them, a plurality of mounting holes are symmetrically arranged on the two "U" - shaped sides of the drafting mounting part 201, and a plurality of mounting holes are also symmetrically arranged on the two "U" - shaped sides of the feeding mounting part 202. On this basis, the drafting mechanism 4 is arranged above the drafting mounting part 201, and the feeding mechanism 3 is arranged above the feeding mounting part 202;

[0039] In this embodiment, after the sliver combed by the comber is fed into the drafting mechanism 4 through the feeding mechanism 3, the sliver is broken by the drafting mechanism 4, and finally the sliver segments with uniform length are output.

[0040] In the present invention, as Figures 2-3 shown, the feeding mechanism 3 includes a feeding roller 301. A pair of feeding roller mounting plates 302 are arranged at both ends of the feeding roller 301. The feeding roller 301 is mounted in the middle of the feeding mounting part 202 through a pair of feeding roller mounting plates 302. A set of second supporting feet 303 are symmetrically arranged on the inner sides of the feeding roller mounting plates 302 respectively. In addition, a second leather roller 304 is arranged above the feeding roller 301, and a set of third air cylinders 305 are arranged above the second leather roller 304. Among them, the second leather roller 304 and a set of the third air cylinders 305 are arranged on the second swing cover 306.

[0041] In this technical solution, the third air cylinder 305 presses the second leather roller 304 towards the feeding roller 301, providing the clamping force for the sliver and feeding the sliver into the drafting mechanism 4 at the same time.

[0042] On this basis, as Figure 3As shown, one end of the second swing cover 306 is provided with a set of second hooks 307 that cooperate with a set of the second supporting feet 303. One side of the second hook 307 is further provided with a second handle 308. And the second hook 307 further includes a second rotating shaft 311. The second hook 307 is connected to one end of the second swing cover 306 through the second rotating shaft 311. When the second swing cover 306 is lifted up, the second hook 307 is rotated around the second rotating shaft 311 to separate the second hook 307 from the second supporting foot 303, that is, the action of lifting up the second swing cover 306 is realized. In addition, both sides of the other end of the second swing cover 306 are respectively connected to one end of two second support rods 310 through second pin shafts 309. The other ends of the two second support rods 310 are installed on the feeding installation part 202.

[0043] In this technical solution, when the staff holds the second handle 308 and lifts the second swing cover 306 with the second pin shaft 309 as the axis, first, the third air cylinder 305 is adjusted to stop applying pressure to the second leather roller 304. Then, the second hook 307 is rotated around the second rotating shaft 311 to separate the second hook 307 from the second supporting foot 303. After that, the second swing cover 306 can be lifted up by the staff. At the same time, the second leather roller 304 and the third air cylinder 305 both move along with the second swing cover 306. At this time, the preliminary feeding of the sliver and the debugging and maintenance of the feeding mechanism 3 are carried out. When the second swing cover 306 is buckled above the feeding mechanism 3, after the staff presses the second swing cover 306 to make the second hook 307 hooked to the second supporting foot 303, the third air cylinder 305 can start to work.

[0044] In addition, in this embodiment, as Figures 2-3 shown, the feeding mechanism 3 further includes a third cotton guiding plate 312 and a fourth cotton guiding plate 313. The third cotton guiding plate 312 is arranged between the drafting roller 401 and the feeding roller 301. The fourth cotton guiding plate 313 is arranged on the other side of the feeding roller 301. Limit plates are arranged on both sides of the third cotton guiding plate 312 and the fourth cotton guiding plate 313. The third cotton guiding plate 312 and the fourth cotton guiding plate 313 limit, guide and support the sliver during the feeding process of the feeding mechanism 3.

[0045] In the present invention, as Figures 2-3As shown in the figure, the drafting mechanism 4 includes a drafting roller 401, which is arranged at the input end of the drafting mechanism 4. A pair of drafting roller mounting plates 403 are provided at both ends of the drafting roller 401. The drafting roller 401 is mounted on one end of the drafting mounting portion 201 through a pair of drafting roller mounting plates 403. A set of first supporting feet 407 are symmetrically provided on the inner sides of the drafting roller mounting plates 403 respectively. In addition, a first leather roller 404 is provided above the drafting roller 401, and a set of first air cylinders 405 are provided above the first leather roller 404. Among them, the first leather roller 404 and a set of the first air cylinders 405 are arranged on the first swing cover 406.

[0046] In this technical solution, after the sliver is sent between the first leather roller 404 and the drafting roller 401 by the feeding mechanism 3, the first air cylinder 405 presses the first leather roller 404 towards the drafting roller 401, increasing the clamping force on the sliver. At the same time, the sliver begins to enter the drafting mechanism 4.

[0047] On this basis, the drafting mechanism 4 further includes a first pressure roller 402, which is arranged at the output end of the drafting mechanism 4. A second pressure roller 408 is provided above the first pressure roller 402. A pair of pressure roller mounting plates 409 are symmetrically provided at both ends of the first pressure roller 402 and the second pressure roller 408. The first pressure roller 402 and the second pressure roller 408 are mounted on the middle part of the drafting mounting portion 201 through a pair of the pressure roller mounting plates 409. Two long slots 410 are provided at the bottom ends of the pressure roller mounting plates 409. The pressure roller mounting plates 409 are mounted on the middle part of the drafting mounting portion 201 through the cooperation of the long slots 410, the mounting holes and bolts.

[0048] In this embodiment, the positions of the first pressure roller 402 and the second pressure roller 408 can be adjusted through the long slots 410 on the pressure roller mounting plates 409, that is, the distance between the first pressure roller 402 and the drafting roller 401 is changed. Thus, the length of the combed sliver segment output by the present invention can be changed according to the requirements of the subsequent cotton fiber dyeing process.

[0049] In addition, as Figures 2-3As shown in the figure, grooves 411 are provided at the top of the pressure roller mounting plate 409. The second pressure roller 408 is arranged inside the grooves 411, so that the second pressure roller 408 is detachably mounted on the pressure roller mounting plate 409. At the same time, a set of second cylinders 412 are arranged above the second pressure roller 408. A set of second cylinders 412 are arranged on the first swing cover 406. One end of the first swing cover 406 is provided with a set of first hooks 413 that cooperate with a set of first support feet 407. A first handle 414 is further provided on one side of the first hook 413. The first hook 413 further includes a first rotating shaft 419. The first hook 413 is connected to one end of the first swing cover 406 through the first rotating shaft 419. When the first swing cover 406 is lifted, the first hook 413 is rotated around the first rotating shaft 419 to separate the first hook 413 from the first support foot 407, and the first swing cover 406 can be lifted.

[0050] In addition, adjustment holes 415 are provided on both sides of the middle part of the first swing cover 406. The adjustment holes 415 are long strip-shaped through holes. A set of second cylinders 412 are arranged in the middle part of the first swing cover 406 through the cooperation of the adjustment holes 415 and bolts. The cylinder bodies of a set of second cylinders 412 are connected to the first swing cover 406, and the output ends of a set of second cylinders 412 are respectively abutted against both ends of the second pressure roller 408.

[0051] In this embodiment, the positions of a set of second cylinders 412 can be adjusted through the adjustment holes 415 on the first swing cover 406. That is, after adjusting the distance between the first pressure roller 402 and the drafting roller 401 by changing the pressure roller mounting plate 409, the positions of a set of second cylinders 412 are adjusted through the adjustment holes 415 on the first swing cover 406, so that the second cylinders 412 can well adapt to the position of the second pressure roller 408, ensuring that the output ends of a set of second cylinders 412 are respectively abutted against both ends of the second pressure roller 408 and can provide pressure.

[0052] On this basis, as Figure 2 shown, one side of the other end of the first swing cover 406 is connected to one end of the first support rod 417 through a first pin shaft 416. The other side of the other end of the first swing cover 406 is hinged to the output end of the pneumatic strut 418. The pneumatic strut 418 is an existing publicly disclosed technology. Except for the property of providing a constant thrust to the output end, the other properties and structures of the pneumatic strut 418 are not described in detail here. In addition, the other end of the first support rod 417 is installed on the drafting installation part 201, and the cylinder body end of the pneumatic strut 418 is hinged to the drafting installation part 201.

[0053] In this embodiment, before the staff holds the first handle 414 and lifts the first swing cover 406 with the first pin shaft 416 as the axis, first, the first cylinder 405 and the second cylinder 412 are debugged to stop applying pressure to the first leather roller 404 and the second pressure roller 408 respectively. Then, the first hook 413 is rotated with the first rotating shaft 419 as the axis. After the first hook 413 is separated from the first supporting foot 407, the first swing cover 406 can be lifted by the staff, providing a loading and unloading basis for the second pressure roller 408. At this time, the second pressure roller 408 can be loaded and unloaded through the groove 411 on the pressure roller mounting plate 409. At the same time, the first cylinder 405, the second cylinder 412, and the first leather roller 404 all move with the first swing cover 406. At this time, the preliminary filling of the sliver and the debugging and maintenance of the drafting mechanism 4 can be carried out. In addition, when the first swing cover 406 is lifted, the pneumatic strut 418 starts to work to provide an upward thrust to assist the staff in lifting the first swing cover 406. When the first swing cover 406 is lifted to the maximum height, the pneumatic strut 418 can provide a constant supporting force to statically support the first swing cover 406, so that the staff does not need to manually hold the first swing cover 406 all the time when carrying out the preliminary filling of the sliver and the debugging and maintenance of the drafting mechanism 4. When the first swing cover 406 is buckled above the drafting mechanism 4, the staff only needs to slightly apply a force greater than the static supporting force provided by the pneumatic strut 418 to the first swing cover 406, press the first swing cover 406 until the first hook 413 is hooked to the first supporting foot 407, and then the first cylinder 405, the second cylinder 412, the drafting roller 401, and the first pressure roller 402 can all start to work.

[0054] Importantly, when the present invention is in the working state, the first cylinder 405 and the second cylinder 412 respectively apply pressure to the first leather roller 404 and the second pressure roller 408 in the direction of the drafting roller 401 and the first pressure roller 402, increasing the clamping force on the sliver. At the same time, by controlling the tension ratio between the first pressure roller 402 and the drafting roller 401 to be between 10 and 20 times, the drafting mechanism 4 breaks the sliver and outputs combed sliver segments with a unified length. Among them, the feeding roller 301, the drafting roller 401, and the first pressure roller 402 are all powered by the headstock motor, and the power is transmitted to the feeding roller 301, the drafting roller 401, and the first pressure roller 402 through flat belt transmission. And there is a small tension between the feeding roller 301 and the drafting roller 401. The first cylinder 405, the second cylinder 412, and the third cylinder 305 are respectively controlled by three cylinder valves.

[0055] In this technical solution, the method for controlling the tension ratio between the first pressure roller 402 and the drafting roller 401 lies in regulating the rotational speeds of the first pressure roller 402 and the drafting roller 401, and the rotational speed of the first pressure roller 402 is greater than that of the drafting roller 401. Meanwhile, according to the action of the clamping force between the first pressure roller 402 and the second pressure roller 408 and the clamping force between the drafting roller 401 and the first leather roller 404, the sliver is broken in the drafting mechanism 4, and the sliver segment is sent out of the drafting mechanism 4 through the clamping force between the first pressure roller 402 and the second pressure roller 408.

[0056] In the present invention, as Figure 3 shown, the drafting mechanism 4 further includes a first cotton guide plate 427, a second cotton guide plate 420 and a cleaning device 421; wherein, the first cotton guide plate 427 is arranged between the drafting roller 401 and the first pressure roller 402, and a group of cotton guide blocks 426 are symmetrically arranged on both sides of the first cotton guide plate 427 to constrain the moving direction of the sliver drafted by the drafting roller 401; an adjustable support piece is arranged below the second cotton guide plate 420 to support and adjust the inclination degree of the second cotton guide plate 420; the second cotton guide plate 420 is arranged on one side of the output end of the drafting mechanism 4 for supporting and guiding the output sliver segments with uniform length; in addition, the cleaning device 421 includes a first cleaning plate 422, a second cleaning plate 423, a first suction box 424 and a second suction box 425. The first cleaning plate 422 and the second cleaning plate 423 are respectively arranged below the drafting roller 401 and the first pressure roller 402 and are respectively lapped on the drafting roller 401 and the first pressure roller 402 to clean the cotton sliver fluff attached to the drafting roller 401 and the first pressure roller 402; meanwhile, the first suction box 424 is arranged above the first cotton guide plate 427 and is installed on the first swing cover 406, the second suction box 425 is arranged below the first cleaning plate 422 and the second cleaning plate 423, and both the first suction box 424 and the second suction box 425 are connected to a negative pressure source. Through negative pressure suction, the flying fibers and cotton sliver fluff generated during the drafting of the sliver by the drafting mechanism 4 are collected and processed.

[0057] Specifically, before the present invention starts to work, first lift the second swing cover 306 on the feeding mechanism 3, and evenly lay the sliver after being combed by the comber between the feeding roller 301 and the second leather roller 304 of the feeding mechanism 3. Then lift the first swing cover 406 on the drafting mechanism 4. After adjusting the position of the pressure roller mounting plate 409 and adaptively adjusting the position of the second cylinder 412, evenly lay the sliver between the first leather roller 404 and the drafting roller 401, and between the first pressure roller 402 and the second pressure roller 408. Then fasten the second swing cover 306 and the first swing cover 406, so that the second hook 307 and the first hook 413 are respectively hooked to the second support leg 303 and the first support leg 407. Start the third cylinder 305, the second cylinder 412 and the first cylinder 405 to apply pressure to the second leather roller 304, the second pressure roller 408 and the first leather roller 404 respectively to clamp the sliver. Simultaneously start the feeding roller 301, the drafting roller 401 and the first pressure roller 402 to work by each servo motor, and regulate the rotational speeds of the first pressure roller 402 and the drafting roller 401 to control the tension ratio between the first pressure roller 402 and the drafting roller 401 within the range of 10 to 20 times, and use this tension ratio to break the sliver and output the combed sliver segments with uniform length.

[0058] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A drafting system for a comber, characterized in that, Including: A frame for supporting the entire drafting system; A mounting base provided at the upper end of the frame. The mounting base includes a drafting mounting portion and a feeding mounting portion. The cross-sections of both the drafting mounting portion and the feeding mounting portion are in a "U" shape. Among them, several mounting holes are symmetrically provided on the two "U" shaped edges of the drafting mounting portion, and several mounting holes are also symmetrically provided on the two "U" shaped edges of the feeding mounting portion. On this basis, a drafting mechanism is provided above the drafting mounting portion, and a feeding mechanism is provided above the feeding mounting portion. After the sliver is fed into the drafting mechanism through the feeding mechanism, the drafting mechanism breaks the sliver, and finally outputs a combed sliver segment with a unified length, where: The feeding mechanism includes a feeding roller. A pair of feeding roller mounting plates are provided at both ends of the feeding roller. The feeding roller is mounted in the middle of the feeding mounting portion through a pair of the feeding roller mounting plates. In addition, a second leather roller is provided above the feeding roller, and a set of third air cylinders is provided above the second leather roller. Among them, the second leather roller and the set of third air cylinders are provided on a second rocker cover. By the third air cylinder pressing the second leather roller towards the feeding roller direction, while providing the clamping force for the sliver, the sliver is fed into the drafting mechanism; The drafting mechanism includes a drafting roller. The drafting roller is provided at the input end of the drafting mechanism. A pair of drafting roller mounting plates are provided at both ends of the drafting roller. The drafting roller is mounted at one end of the drafting mounting portion through a pair of the drafting roller mounting plates. In addition, a first leather roller is provided above the drafting roller, and a set of first air cylinders is provided above the first leather roller. Among them, the first leather roller and the set of first air cylinders are provided on a first rocker cover. After the sliver is fed between the first leather roller and the drafting roller through the feeding mechanism, by the first air cylinder pressing the first leather roller towards the drafting roller direction, while increasing the clamping force for the sliver, the sliver starts to enter the drafting mechanism; On this basis, the drafting mechanism further includes a first pressure roller. The first pressure roller is provided at the output end of the drafting mechanism. A second pressure roller is provided above the first pressure roller. A pair of pressure roller mounting plates are symmetrically provided at both ends of the first pressure roller and the second pressure roller. The first pressure roller and the second pressure roller are mounted in the middle of the drafting mounting portion through a pair of the pressure roller mounting plates. In addition, a set of second air cylinders is provided above the second pressure roller. The set of second air cylinders is provided on the first rocker cover. In the working state, by the first air cylinder and the second air cylinder respectively pressing the first leather roller and the second pressure roller towards the drafting roller and the first pressure roller directions, while increasing the clamping force for the sliver, by controlling the tension ratio between the first pressure roller and the drafting roller to be between 10 and 20 times, the drafting mechanism breaks the sliver and outputs a combed sliver segment with a unified length; Among them, the feeding roller, the drafting roller and the first pressure roller are all powered by the headstock motor, and the power is transmitted to the feeding roller, the drafting roller and the first pressure roller through flat belt drive. There is a small tension between the feeding roller and the drafting roller. The first cylinder, the second cylinder and the third cylinder are respectively controlled by three cylinder valves.

2. The drafting system for a comber according to claim 1, characterized in that: On the inner sides of a pair of the drafting roller mounting plates, a set of first supports are symmetrically provided respectively. At the bottom ends of a pair of the pressure roller mounting plates, two long slots are provided respectively. The pressure roller mounting plates are mounted in the middle of the drafting mounting part through the cooperation of the long slots, the mounting holes and bolts. In addition, grooves are provided at the top ends of a pair of the pressure roller mounting plates, and the second pressure roller is arranged inside the grooves, so that the second pressure roller is detachably mounted on the pressure roller mounting plates.

3. The drafting system for a comber according to claim 2, characterized in that: One end of the first swing cover is provided with a set of first hooks that cooperate with a set of the first supports. A first handle is further provided on one side of the first hook. In addition, adjustment holes are provided on both sides of the middle part of the first swing cover. The adjustment holes are long strip-shaped through holes. A set of the second cylinders are arranged in the middle of the first swing cover through the cooperation of the adjustment holes and bolts. Among them, the cylinder bodies of a set of the second cylinders are connected to the first swing cover, and the output ends of a set of the second cylinders respectively abut against both ends of the second pressure roller. On this basis, one side of the other end of the first swing cover is connected to one end of a first support rod through a first pin shaft. The other side of the other end of the first swing cover is hinged to the output end of a pneumatic strut. The other end of the first support rod is mounted on the drafting mounting part, and the cylinder body end of the pneumatic strut is hinged to the drafting mounting part. When the first handle is pushed to lift the first swing cover with the first pin shaft as the axis, a loading and unloading basis is provided for the second pressure roller. At the same time, the first cylinder, the second cylinder and the first leather roller all move along with the first swing cover. At this time, the preliminary loading of the sliver and the debugging and maintenance of the drafting mechanism are carried out.

4. The drafting system for a comber according to claim 3, characterized in that: The drafting mechanism further includes a first cotton guiding plate, a second cotton guiding plate and a cleaning device. The first cotton guiding plate is arranged between the drafting roller and the first pressure roller and is used for providing support and guidance for the sliver input into the drafting mechanism. The second cotton guiding plate is arranged on one side of the output end of the drafting mechanism and is used for supporting and guiding the output sliver segments with uniform length. The cleaning device includes a first cleaning plate, a second cleaning plate, a first air suction box and a second air suction box. The first cleaning plate and the second cleaning plate are respectively arranged below the drafting roller and the first pressure roller, and are respectively lapped on the drafting roller and the first pressure roller to clean the cotton strip fluff attached to the drafting roller and the first pressure roller. In addition, the first air suction box is arranged above the first cotton guiding plate and is installed on the first swing cover. The second air suction box is arranged below the first cleaning plate and the second cleaning plate. Both the first air suction box and the second air suction box are connected to a negative pressure source. Through negative pressure suction, the flying fibers and cotton strip fluff generated during the drafting of the cotton strip by the drafting mechanism are collected and processed.

5. The drafting system for a comber according to claim 4, characterized in that: On both sides of the first cotton guiding plate, a set of cotton guiding blocks are symmetrically arranged to restrict the moving direction of the cotton strip after being drafted by the drafting roller. Below the second cotton guiding plate, an adjustable support piece is provided to support and adjust the inclination degree of the second cotton guiding plate.

6. The drafting system for a comber according to claim 1, characterized in that: The feeding mechanism further includes a third cotton guiding plate and a fourth cotton guiding plate. The third cotton guiding plate is arranged between the drafting roller and the feeding roller, and the fourth cotton guiding plate is arranged on the other side of the feeding roller. Limit plates are arranged on both sides of the third cotton guiding plate and the fourth cotton guiding plate. The third cotton guiding plate and the fourth cotton guiding plate limit, guide and support the cotton strip during the feeding process of the feeding mechanism.

7. The drafting system for a comber according to claim 1, characterized in that: On the inner sides of a pair of the feeding roller mounting plates, a set of second supporting feet are symmetrically arranged respectively. One end of the second swing cover is provided with a set of second hooks that cooperate with a set of the second supporting feet. A second handle is further provided on one side of the second hook. On this basis, both sides of the other end of the second swing cover are respectively connected to one end of two second supporting rods through second pin shafts. The other ends of the two second supporting rods are installed on the feeding mounting part. When the second handle is pushed to lift the second swing cover with the second pin shaft as the axis, the second leather roller and the third air cylinder both move along with the second swing cover. At this time, the preliminary feeding of the cotton strip and the debugging and maintenance of the feeding mechanism are carried out.

8. The drafting system for a comber according to claim 3 or 7, characterized in that: The first hook further includes a first rotating shaft. The first hook is connected to one end of the first swing cover through the first rotating shaft. When the first swing cover is lifted, the first hook rotates with the first rotating shaft as the axis to separate the first hook from the first supporting foot, that is, to lift the first swing cover. In addition, the second hook further includes a second rotating shaft. The second hook is connected to one end of the second swing cover through the second rotating shaft. When the second swing cover is lifted, the second hook rotates with the second rotating shaft as the axis to separate the second hook from the second supporting foot, that is, to lift the second swing cover.

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