Cotton suction device

Abstract

The invention relates to a cotton suction device which comprises a shell, an air inlet pipe, an air outlet pipe and a cotton blocking plate. An intercepting cavity and a compression cavity which communicate with each other are formed in the shell, and a discharging opening communicating with the compression cavity is formed in the surface of the shell; the cotton blocking plate is installed in the blocking cavity and located between the air inlet pipe and the air outlet pipe. A plurality of cotton blocking needles are connected to the surface of the cotton blocking plate and are arranged at intervals to form a channel for airflow to pass through and blocking fibers; the shell is provided with a cotton carding mechanism and a cotton pressing mechanism; the cotton carding mechanism is used for carding fibers on the peripheral sides of the cotton blocking needles to the compression cavity; the cotton pressing mechanism is used for extruding fibers in the compression cavity; the cotton pressing mechanism comprises a movable part and a contact part; when the fibers are driven by the negative pressure airflow to the intercepting cavity, the contact part blocks the communication part of the intercepting cavity and the compression cavity; when the cotton pressing mechanism is started, the movable piece drives the contact piece to move, and the intercepting cavity is communicated with the compression cavity. The device has the effects of reducing the cotton picking frequency and improving the cotton suction efficiency of the cotton suction device of the spinning frame.

Description

Technical Field

[0001] The present application relates to the field of textile machinery, and in particular to a cotton suction device. Background Art

[0002] Cotton suction is an essential process in the spinning machine. The current ring spinning machine cotton suction device includes a cotton suction flute, a cotton filter box, a filter screen and a fan. The surface of the cotton suction flute is penetrated with a cotton suction port, which is located at the jaws of each front roller. The roving yarn head produced during the spinning process, under the negative pressure generated by the fan and the cotton filter box, passes through the cotton suction port, enters the cotton filter box and attaches to the filter screen to achieve the purpose of cotton suction to ensure the quality of the yarn. However, the surface area of ​​the filter screen is limited, and the frequency of cotton removal is high, which affects the cotton suction efficiency of the spinning machine cotton suction device. Summary of the invention

[0003] In order to reduce the frequency of cotton picking and improve the cotton suction efficiency of the cotton suction device of a spinning frame, the present application provides a cotton suction device.

[0004] The present application provides a cotton suction device that adopts the following technical solution: A cotton suction device comprises a shell, an air inlet pipe, an air outlet pipe and a cotton blocking plate; the shell is provided with an interception chamber and a compression chamber connected to each other, and the surface of the shell is provided with a discharge port connected to the compression chamber; the air inlet pipe is used to connect the interception chamber with the tube cavity of the cotton suction flute; the air outlet pipe is used to guide the gas in the interception chamber to flow out of the shell; the cotton blocking plate is installed in the interception chamber and is located between the air inlet pipe and the air outlet pipe; a plurality of cotton blocking needles are connected to the surface of the cotton blocking plate, and the plurality of cotton blocking needles are arranged at intervals The invention is arranged to form a channel for air flow to pass through and to block fibers; the shell is equipped with a cotton combing mechanism and a cotton pressing mechanism; the cotton combing mechanism is used to comb the fibers around the cotton blocking needles toward the compression chamber; the cotton pressing mechanism is used to squeeze the fibers in the compression chamber; the cotton pressing mechanism includes a movable part and a contact part; when the fibers are driven to the intercepting chamber by the negative pressure airflow, the contact part blocks the connection between the intercepting chamber and the compression chamber; when the cotton pressing mechanism is started, the movable part drives the contact part to move, and the intercepting chamber is connected with the compression chamber.

[0005] By adopting the above technical scheme, after the roving yarn head is brought into the interception chamber by the negative pressure airflow and passes through the cotton intercepting needle, the roving yarn head is adsorbed on the side of the cotton intercepting needle, and the contact piece connects the interception chamber with the compression chamber. After the cotton combing mechanism and the cotton pressing mechanism are turned on, the interception chamber is connected with the compression chamber, destroying the negative pressure environment of the interception chamber, and the fibers on the side of the cotton intercepting needle will slide down by themselves. The cotton combing mechanism combs the roving yarn head adsorbed on the side of the cotton intercepting needle into the interception chamber, and the cotton pressing mechanism squeezes the fibers in the compression chamber, and the compressed fibers can be taken out through the discharge port later. By using the cotton intercepting needle, the cotton combing mechanism and the cotton pressing mechanism, on the one hand, after the negative pressure environment in the shell is destroyed, or the input of the airflow of the air intake pipe is stopped, the fibers on the side of the cotton intercepting needle slide down by themselves, and the self-cleaning effect of the interception structure is achieved. On the other hand, the cotton combing mechanism and the cotton pressing mechanism are used to squeeze the roving yarn head in the compression chamber, reduce the space occupied by the fibers and store them in the compression chamber, reduce the cotton picking frequency, and improve the cotton suction efficiency of the cotton suction device of the spinning machine.

[0006] Optionally, the cotton pressing mechanism further includes a compression plate and a positioning rod, the two ends of the compression plate are respectively mounted on the opposite inner walls of the compression chamber, and the two ends of the positioning rod are respectively mounted on the opposite inner walls of the compression chamber; the movable part includes a cylinder and a rubbing rod, the cylinder is mounted on the shell, and the rubbing rod is located in the compression chamber; the output end of the cylinder is rotatably connected to the end of the rubbing rod; the axes of the positioning rod and the rubbing rod are parallel to each other, and the output shaft of the cylinder and the axis of the rubbing rod are perpendicular to each other; the contact piece is made of flexible material, and both ends of the contact piece are connected On the peripheral side of the positioning rod, a flexible deformation zone is formed between the contact piece and the positioning rod; the compression plate and the rubbing rod are both located in the flexible deformation zone; when the cotton combing mechanism combs the fibers around the cotton blocking needle toward the compression chamber, the cotton combing mechanism forces the flexible deformation zone between the rubbing rod and the compression plate to collapse; when the cylinder is started, the rubbing rod drives the contact piece to deform, and the collapsed flexible deformation zone gradually narrows and moves on the plate surface of the compression plate; when the rubbing rod moves to above the discharge port, the collapsed flexible deformation zone stretches.

[0007] By adopting the above technical solution, the rubbing rod is matched with a cylinder, and a contact piece made of flexible material is used to twist the fibers that fall on the surface of the contact piece into strips, thereby further compressing the storage space of the fibers. At the same time, when the fibers compressed into strips are taken out from the discharge port, it is not only easy to take them out, but also reduces the risk of the fibers floating in the working environment when they are removed from the discharge port.

[0008] Optionally, the combing mechanism includes a combing plate, an extrusion plate and a driving member; the surfaces of the combing plate and the extrusion plate are penetrated with through holes for the cotton blocking needles to pass through; the surface of the combing plate is provided with a placement groove; the placement groove is used to accommodate the extrusion plate; the driving member is installed on the shell; when the driving member drives the combing plate and the extrusion plate to move toward the compression chamber, from the top to the bottom of the cotton blocking needle, the driving member further drives the extrusion plate through the connection between the intercepting chamber and the compression chamber.

[0009] By adopting the above technical solution, in the process of the driving member driving the carding plate and the extrusion plate to move, the further movement of the extrusion plate makes the flexible deformation zone collapse in the same area every time the fibers need to be twisted into strips, so as to accommodate the fibers falling from the interception cavity and improve the success rate of the cotton pressing mechanism in twisting the fibers into strips.

[0010] Optionally, the driving member includes a first driving motor, a second driving motor, a first driving rope and a second driving rope; the first driving motor and the second driving motor are both installed on the outer surface of the shell; the surfaces of the shell and the cotton blocking plate are penetrated by rope holes for the driving rope to pass through; the first driving motor and the combing plate are connected by the first driving rope; the second driving motor and the extrusion plate are connected by the second driving rope.

[0011] By adopting the above technical solution, the structures of the first drive motor, the second drive motor, the first drive rope and the second drive rope are matched to shorten the occupied volume of the cotton suction device in the longitudinal space, so that the cotton suction device is miniaturized and easy to be installed on the spinning frame body.

[0012] Optionally, a telescopic rod is provided between the combing plate and the extrusion plate, one end of the telescopic rod is connected to the surface of the combing plate, and the other end of the telescopic rod is connected to the surface of the extrusion plate.

[0013] By adopting the above technical solution and introducing the telescopic rod, the extrusion plate is structurally guided during movement, thereby reducing the risk of the extrusion plate deviating from its moving position and being unable to be reset.

[0014] Optionally, an electromagnet is provided on the surface of the shell, and an adsorption member is provided on the surface of the combing plate, and the adsorption member is used for adsorption of the electromagnet after power is supplied.

[0015] By adopting the above technical solution and utilizing the mutual adsorption effect of the electromagnet and the adsorption member, the combing plate can be accurately positioned to the starting position after the combing is completed, thereby reducing the risk of the combing plate being offset and unable to move.

[0016] Optionally, the surfaces of the combing plate and the extrusion plate are provided with a plurality of protrusions, and the plurality of protrusions are arranged at intervals.

[0017] By adopting the above technical solution, the introduction of convex points can, on the one hand, reduce the risk of coarse yarn ends being adsorbed on the surfaces of the carding plate and the extrusion plate during the carding operation; on the other hand, when the air flow passes through the convex points, the air flow forms turbulence, reducing the risk of fibers flowing unimpeded to the air outlet pipe and clogging the air outlet pipe.

[0018] Optionally, the lengths of the plurality of cotton blocking needles gradually increase from the air inlet pipe to the air outlet pipe.

[0019] By adopting the above technical solution, the problem of fiber blocking at the air inlet pipe is improved, the effect of evenly distributing the fibers entering the interception cavity around each cotton intercepting needle is improved, and the cotton intercepting efficiency of the cotton intercepting needle is improved.

[0020] Optionally, the cotton blocking needle is bent, and the bent sharp corner of the cotton blocking needle faces the air outlet pipe.

[0021] By adopting the above technical solution, the airflow is guided to guide the fibers around the cotton blocking needle to the bending position, so that the fibers and the cotton blocking needle form a fiber net, thereby improving the fiber capture effect and further improving the cotton blocking effect of the cotton blocking needle.

[0022] Optionally, the shell is threadedly connected with an interception net, and the interception net is located at the connection point between the air outlet pipe and the interception chamber. When the moving range of the cotton combing mechanism passes through the interception net, the interception surface of the interception net is cleaned.

[0023] By adopting the above technical solution, on the one hand, the introduction of the interception net reduces the risk of fibers flowing to the air outlet pipe, and on the other hand, the threaded interception net, when combined with the cotton combing mechanism, cleans the interception surface of the interception net, reducing the risk of fibers blocking the air outlet pipe.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: By using the cotton intercepting needle, the cotton combing mechanism and the cotton pressing mechanism, on the one hand, after the negative pressure environment in the shell is destroyed, or the input of the airflow in the air intake pipe is stopped, the fibers around the cotton intercepting needle slide down by themselves, so as to achieve the effect of self-cleaning of the intercepting structure; on the other hand, the cotton combing mechanism and the cotton pressing mechanism are used to squeeze the roving yarn heads in the compression chamber, reduce the space occupied by the fibers and store them in the compression chamber, reduce the cotton picking frequency, and improve the cotton suction efficiency of the cotton suction device of the spinning frame; The twisting rod is equipped with a cylinder, and the contact piece made of flexible material is used to twist the fibers that fall on the surface of the contact piece into strips, which further compresses the storage space of the fibers. At the same time, when the fibers compressed into strips are taken out from the discharge port, it is not only easy to take, but also reduces the risk of the fibers floating in the working environment when they are removed from the discharge port. The introduction of the convex points, on the one hand, reduces the risk of coarse yarn ends being adsorbed on the surfaces of the carding plate and the extrusion plate during the carding operation; on the other hand, when the air flow passes through the convex points, the air flow forms turbulence, reducing the risk of fibers flowing unimpeded to the outlet pipe and clogging the outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0026] Figure 2 It is a schematic diagram of the cross-sectional structure used to illustrate the present application.

[0027] Figure 3 It is a schematic diagram used to show the installation location of the interception net.

[0028] Figure 4 It is a schematic diagram for showing the state of the extrusion plate being located in the compression chamber.

[0029] Figure 5 It is a schematic diagram for showing the structure of the carding plate and the extrusion plate.

[0030] Figure 6 It is a schematic diagram for showing the installation position of the telescopic rod.

[0031] Figure 7 It is a schematic diagram used to show the state of the cotton pressing mechanism twisting the fibers into strips.

[0032] Explanation of the reference numerals in the accompanying drawings: 1. Shell; 11. Intercepting chamber; 12. Compression chamber; 13. Discharge port; 14. Slide; 2. Air inlet pipe; 3. Air outlet pipe; 4. Cotton blocking plate; 41. Cotton blocking needle; 5. Cotton combing mechanism; 51. Cotton combing plate; 511. Placement slot; 512. Storage slot; 52. Extrusion plate; 521. Connecting ear; 53. Driving member; 531. First driving motor; 532. Second driving motor; 533. First driving rope; 534. Second driving rope; 54. Through hole; 55. Bump; 56. Telescopic rod; 6. Cotton pressing mechanism; 61. Movable member; 611. Cylinder; 612. Rubbing rod; 62. Contact member; 63. Compression plate; 64. Positioning rod; 65. Flexible deformation zone; 7. Intercepting net; 8. Electromagnet; 9. Adsorption member; 10. Organ cover. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 This application is described in further detail.

[0034] The current ring spinning machine cotton suction device includes a cotton suction flute, a cotton filter box, a filter screen and a fan. The surface of the cotton suction flute is penetrated with a cotton suction port, which is located at the jaws of each front roller. The roving yarn head produced during the spinning process, under the negative pressure generated by the fan and the cotton filter box, passes through the cotton suction port, enters the cotton filter box and adheres to the filter screen to achieve the purpose of cotton suction.

[0035] The embodiment of the present application discloses a cotton suction device, which is used to intercept and collect the coarse yarn ends generated in the spinning process of a spinning frame, reduce the frequency of cotton picking, and improve the cotton suction efficiency of the cotton suction device of the spinning frame.

[0036] Reference Figure 1 and Figure 2 A cotton suction device includes a shell 1, an air inlet pipe 2, an air outlet pipe 3, a cotton blocking plate 4, a cotton combing mechanism 5 and a cotton pressing mechanism 6. The shell 1 is provided with an intercepting chamber 11 and a compression chamber 12 which are connected to each other. The surface of the shell 1 is provided with a discharge port 13 which is connected to the compression chamber 12. The shell 1 is detachably connected with a bag at the discharge port 13. The air inlet pipe 2 is used to connect the intercepting chamber 11 with the tube cavity of the cotton suction flute tube. The two ends of the air outlet pipe 3 are detachably connected to the shell 1 and the fan respectively to guide the gas in the intercepting chamber 11 to flow out of the shell 1. The cotton blocking plate 4 is fixed in the intercepting chamber 11 and is located between the air inlet pipe 2 and the air outlet pipe 3. The cotton blocking plate 4 is used to intercept the fibers in the intercepting chamber 11. The cotton combing mechanism 5 is used to comb the fibers on the cotton blocking plate 4 toward the compression chamber 12. The cotton pressing mechanism 6 is used to squeeze and twist the fibers in the compression chamber 12.

[0037] Reference Figure 2 and Figure 3 Specifically, the connection point between the interception chamber 11 and the compression chamber 12 is defined as a connection port, the connection point between the air inlet pipe 2 and the shell 1 is defined as an air inlet, and the connection point between the air outlet pipe 3 and the shell 1 is defined as an air outlet. The bottom of the interception chamber 11 is tilted to guide the fibers in the interception chamber 11 to fall into the compression chamber 12 through the connection port. The shell 1 is threadedly connected to an interception net 7 at the position of the air outlet. It is worth noting that when the combing mechanism 5 combs the fibers into the compression chamber 12, the combing mechanism 5 cleans the interception surface of the interception net 7 at the same time.

[0038] Reference Figure 4 The surface of the cotton blocking plate 4 is connected with a plurality of cotton blocking needles 41, and the plurality of cotton blocking needles 41 are arranged at intervals to form a channel for air flow to pass through and block the fibers. The cotton blocking needles 41 are bent, and the bending angle is between 150° and 170°, and the bending sharp corner of the cotton blocking needles 41 faces the air outlet pipe 3. The lengths of the plurality of cotton blocking needles 41 gradually increase from the air inlet pipe 2 to the air outlet pipe 3. The significance of such a design is to improve the problem of fiber blockage at the air inlet position, improve the effect of evenly distributing the fibers entering the interception cavity 11 around each cotton blocking needle 41, and improve the cotton blocking efficiency of the cotton blocking needles 41.

[0039] Reference Figure 4 , Figure 5 and Figure 6 The combing mechanism 5 includes a combing plate 51, a squeezing plate 52 and a driving member 53. The combing plate 51 and the cotton blocking plate 4 are of the same size. An electromagnet 8 is bolted to the surface of the shell 1, and the adsorption end of the electromagnet 8 passes through the cotton blocking plate 4. An adsorption member 9 is bolted to the surface of the combing plate 51, and the adsorption member 9 is adsorbed by the electromagnet 8 after power is turned on. The surfaces of the combing plate 51 and the squeezing plate 52 are penetrated by through holes 54 for the cotton blocking needles 41 to pass through. A placement groove 511 is provided on the surface of the combing plate 51, and the placement groove 511 is used to accommodate the squeezing plate 52. A plurality of protrusions 55 are arranged on the surfaces of the combing plate 51 and the squeezing plate 52, and the plurality of protrusions 55 are arranged at intervals.

[0040] Reference Figure 4 The driving member 53 includes a first driving motor 531, a second driving motor 532, a first driving rope 533 and a second driving rope 534. The first driving motor 531 and the second driving motor 532 are both bolted to the outer surface of the shell 1. Two first driving motors 531 and two first driving ropes 533 are provided, and one second driving motor 532 and one second driving rope 534 are provided. The second driving motor 532 is located between the two first driving motors 531. Rope holes for the driving ropes to pass through are provided on the surfaces of the shell 1 and the cotton blocking plate 4. The first driving motor 531 and the combing plate 51 are connected by the first driving rope 533, and the second driving motor 532 and the squeezing plate 52 are connected by the second driving rope 534.

[0041] Reference Figure 4 and Figure 6 A telescopic rod 56 is provided between the carding plate 51 and the extrusion plate 52, a storage groove 512 for accommodating the telescopic rod 56 is provided on the side wall of the placement groove 511, and a connecting ear 521 is integrally formed on the side wall of the extrusion plate 52. One end of the telescopic rod 56 is bonded and fixed to the bottom of the storage groove 512, and the other end is bonded and fixed to the surface of the connecting ear 521. The significance of designing the telescopic rod 56 is that the extrusion plate 52 has a structural guide during the movement process, thereby reducing the risk of the extrusion plate 52 deviating from the moving position and being unable to be reset.

[0042] Reference Figure 4 In other embodiments, the driving member 53 may be a plurality of telescopic cylinders mounted on the housing 1, or a gear rack mechanism, etc. As long as the carding plate 51 and the squeezing plate 52 are driven to move, and the squeezing plate 52 is further driven to move independently, it will be sufficient.

[0043] Reference Figure 1 and Figure 2The cotton pressing mechanism 6 includes a movable part 61 and a contact part 62. When the fiber is driven to the intercepting chamber 11 by the negative pressure airflow, the contact part 62 blocks the connection between the intercepting chamber 11 and the compression chamber 12. When the cotton pressing mechanism 6 is started, the movable part 61 drives the contact part 62 to move, and the intercepting chamber 11 is connected with the compression chamber 12. In other embodiments, the movable part 61 may be a telescopic mechanism, and the contact part 62 may be an elastic part installed at the output end of the telescopic mechanism. However, the present embodiment provides a storage space for compressed fibers to reduce the risk of fibers floating in the working environment when the fibers are removed from the discharge port 13. The movable part 61 and the contact part 62 of the present application adopt different structural designs.

[0044] Reference Figure 2 and Figure 3 In detail, the cotton pressing mechanism 6 also includes a compression plate 63 and a positioning rod 64, the two ends of the compression plate 63 are respectively bolted to the opposite inner walls of the compression chamber 12, and the two ends of the positioning rod 64 are respectively bolted to the opposite inner walls of the compression chamber 12.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The movable part 61 includes a cylinder 611 and a twisting rod 612. The cylinder 611 is bolted to the outer surface of the shell 1. A chute 14 is provided through the inner wall of the shell 1 opposite to the compression chamber 12. The chute 14 is for the end of the twisting rod 612 to pass through. The twisting rod 612 is located in the compression chamber 12, and the output end of the cylinder 611 is rotatably connected to the end of the twisting rod 612. The end of the twisting rod 612 is rotatably connected to a connecting ring. The connecting ring is fixed with an accordion cover 10 on both sides of the twisting rod 612. The accordion cover 10 is used to block the chute 14 to reduce the risk of the fibers in the compression chamber 12 escaping to the working environment. The axes of the positioning rod 64 and the twisting rod 612 are parallel to each other, and the output shaft of the cylinder 611 and the axis of the twisting rod 612 are perpendicular to each other.

[0046] Reference Figure 3 and Figure 7 The contact member 62 is made of a flexible material, such as aramid paper, plastic paper or other tough paper. Both ends of the contact member 62 are bonded to the peripheral side of the positioning rod 64. A flexible deformation zone 65 is formed between the contact member 62 and the positioning rod 64. The compression plate 63 and the rubbing rod 612 are both located in the flexible deformation zone 65.

[0047] Reference Figure 4 and Figure 7 When the combing mechanism 5 combs the fibers around the intercepting needle 41 toward the compression chamber 12, the extrusion plate 52 squeezes the fibers at the bottom of the intercepting chamber 11 to the surface of the contact piece 62 through the connecting port, and forces the flexible deformation zone 65 between the rubbing rod 612 and the compression plate 63 to collapse.

[0048] Reference Figure 1 and Figure 7 When the cylinder 611 is activated, the rubbing rod 612 drives the contact member 62 to deform, and the collapsed flexible deformation area 65 gradually narrows and moves on the plate surface of the compression plate 63, so that the fiber is twisted into strips. When the rubbing rod 612 moves to the top of the discharge port 13, the collapsed flexible deformation area 65 stretches, and the twisted fiber falls into the bag through the discharge port 13 for collection.

[0049] The implementation principle of a cotton suction device in the embodiment of the present application is as follows: when the spinning frame is spinning normally, the rubbing rod 612 is located directly below the connecting port, so that the contact member 62 is against the connecting port. With the combination of the cotton suction flute and the fan, the roving yarn head enters the interception chamber 11 through the air inlet pipe 2, and the roving yarn head is intercepted by the cotton intercepting needle 41 and adsorbed on the surrounding side of the cotton intercepting needle 41.

[0050] When it is necessary to clean the roving yarn ends in the interception chamber 11, turn off the fan or reduce the fan power, start the combing mechanism 5 and the pressing mechanism 6, and the rubbing rod 612 approaches the positioning rod 64. The combing plate 51 and the squeezing plate 52 comb away the roving yarn ends around the cotton intercepting needle 41, and the second driving motor 532 and the second driving rope 534 further drive the squeezing plate 52 to squeeze the roving yarn ends at the bottom of the interception chamber 11 toward the surface of the contact member 62. After the second driving motor 532 and the second driving rope 534 drive the squeezing plate 52 to re-enter the interception chamber 11, the cylinder 611 drives the rubbing rod 612 to gradually move away from the positioning rod 64, and the contact member 62 made of flexible material is used to twist the fibers falling on the surface of the contact member 62 into strips, and the twisted fibers are forced to fall into the bag through the discharge port 13 for collection.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cotton suction device, characterized in that: The invention comprises a shell (1), an air inlet pipe (2), an air outlet pipe (3) and a cotton blocking plate (4); the shell (1) is provided with an intercepting chamber (11) and a compression chamber (12) which are interconnected, and the surface of the shell (1) is provided with a discharge port (13) which is connected to the compression chamber (12); the air inlet pipe (2) is used to connect the intercepting chamber (11) with the tube cavity of the cotton suction flute; the air outlet pipe (3) is used to guide the gas in the intercepting chamber (11) to flow out of the shell (1); the cotton blocking plate (4) is installed in the intercepting chamber (11) and is located between the air inlet pipe (2) and the air outlet pipe (3); a plurality of cotton blocking needles (41) are connected to the surface of the cotton blocking plate (4), and the plurality of cotton blocking needles (41) are arranged at intervals to form a channel for air flow to pass through and block fibers; The housing (1) is equipped with a cotton combing mechanism (5) and a cotton pressing mechanism (6); the cotton combing mechanism (5) is used to comb the fibers around the cotton blocking needle (41) toward the compression chamber (12); the cotton pressing mechanism (6) is used to squeeze the fibers in the compression chamber (12); The cotton pressing mechanism (6) comprises a movable part (61) and a contact part (62); when the fibers are driven to the intercepting chamber (11) by the negative pressure airflow, the contact part (62) blocks the connection between the intercepting chamber (11) and the compression chamber (12); when the cotton pressing mechanism (6) is started, the movable part (61) drives the contact part (62) to move, and the intercepting chamber (11) is connected to the compression chamber (12).

2. A cotton suction device according to claim 1, characterized in that: The cotton pressing mechanism (6) further comprises a compression plate (63) and a positioning rod (64), wherein two ends of the compression plate (63) are respectively mounted on opposite inner walls of the compression chamber (12), and two ends of the positioning rod (64) are respectively mounted on opposite inner walls of the compression chamber (12); The movable part (61) comprises a cylinder (611) and a twisting rod (612); the cylinder (611) is mounted on the housing (1), and the twisting rod (612) is located in the compression chamber (12); the output end of the cylinder (611) is rotatably connected to the end of the twisting rod (612); the axes of the positioning rod (64) and the twisting rod (612) are parallel to each other, and the output shaft of the cylinder (611) and the axis of the twisting rod (612) are perpendicular to each other; The contact piece (62) is made of a flexible material, and both ends of the contact piece (62) are connected to the peripheral side of the positioning rod (64), and a flexible deformation zone (65) is formed between the contact piece (62) and the positioning rod (64); the compression plate (63) and the rubbing rod (612) are both located in the flexible deformation zone (65); When the combing mechanism (5) combs the fibers around the cotton blocking needle (41) toward the compression chamber (12), the combing mechanism (5) forces the flexible deformation zone (65) between the rubbing rod (612) and the compression plate (63) to collapse; When the cylinder (611) is started, the rubbing rod (612) drives the contact member (62) to deform, and the collapsed flexible deformation zone (65) gradually narrows and moves on the plate surface of the compression plate (63); When the rubbing rod (612) moves to above the discharge port (13), the collapsed flexible deformation zone (65) stretches.

3. A cotton suction device according to claim 2, characterized in that: The combing mechanism (5) comprises a combing plate (51), an extrusion plate (52) and a driving member (53); the surfaces of the combing plate (51) and the extrusion plate (52) are penetrated with through holes (54) for the cotton blocking needle (41) to pass through; the surface of the combing plate (51) is provided with a placement groove (511); the placement groove (511) is used to accommodate the extrusion plate (52); the driving member (53) is installed on the shell (1); when the driving member (53) drives the combing plate (51) and the extrusion plate (52) to move toward the compression chamber (12), from the top to the bottom of the cotton blocking needle (41), the driving member (53) further drives the extrusion plate (52) to pass through the connection between the intercepting chamber (11) and the compression chamber (12).

4. A cotton suction device according to claim 3, characterized in that: The driving member (53) comprises a first driving motor (531), a second driving motor (532), a first driving rope (533) and a second driving rope (534); the first driving motor (531) and the second driving motor (532) are both mounted on the outer surface of the shell (1); the surfaces of the shell (1) and the cotton blocking plate (4) are both provided with rope holes for the driving rope to pass through; the first driving motor (531) and the cotton combing plate (51) are connected via the first driving rope (533); the second driving motor (532) and the squeezing plate (52) are connected via the second driving rope (534).

5. A cotton suction device according to claim 4, characterized in that: A telescopic rod (56) is provided between the combing plate (51) and the squeezing plate (52), one end of the telescopic rod (56) being connected to the surface of the combing plate (51) and the other end being connected to the surface of the squeezing plate (52).

6. A cotton suction device according to claim 4, characterized in that: An electromagnet (8) is provided on the surface of the housing (1), and an adsorption member (9) is provided on the surface of the combing plate (51). The adsorption member (9) is used to adsorb the electromagnet (8) after power is supplied.

7. A cotton suction device according to claim 3, characterized in that: The surfaces of the combing plate (51) and the squeezing plate (52) are provided with a plurality of convex points (55), and the plurality of convex points (55) are arranged at intervals.

8. A cotton suction device according to claim 1, characterized in that: The lengths of the plurality of cotton blocking needles (41) gradually increase from the air inlet pipe (2) to the air outlet pipe (3).

9. A cotton suction device according to claim 1 or 8, characterized in that: The cotton blocking needle (41) is arranged to be bent, with the bent sharp corner of the cotton blocking needle (41) facing the air outlet pipe (3).

10. A cotton suction device according to claim 1, characterized in that: The housing (1) is threadably connected to an interception net (7), the interception net (7) being located at the connection point between the air outlet pipe (3) and the interception chamber (11), and the interception surface of the interception net (7) is cleaned when the cotton combing mechanism (5) moves through the interception net (7).

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