A kind of non-woven fabric laying machine suction mechanism

Abstract

The application discloses a kind of nonwoven fabric laying machine suction cotton mechanism belonging to nonwoven fabric technical field, and suction cotton mechanism is arranged in the upper layer of laying machine rack, comprising: array type suction cotton system, split negative pressure system and double-shaft driving system.The application can maximize the use of negative pressure air volume to complete the adsorption capture of cotton fine dust under the condition of rated negative pressure power and suction air volume, that is, each suction cotton port independently captures cotton fine dust under rated air volume, compared with the processing mode of existing straight pipe type whole continuous suction cotton, the application is beneficial to local rapid processing of cotton fine dust through dot matrix gap suction cotton, which reduces the phenomenon of lifting fiber web folded when arranging high-power suction fan continuous suction cotton on one hand, plays the role of energy saving and emission reduction, on the other hand, carries out electrostatic elimination treatment to captured cotton fine dust, avoids greater risk caused by charge accumulation of cotton fine dust and dispersion under the action of secondary static electricity.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric technology, and more specifically, to a cotton suction mechanism for a nonwoven fabric web laying machine. Background Technology

[0002] Nonwoven fabric is a type of fabric formed without spinning or weaving. It is created by orienting or randomly arranging short or long textile fibers to form a web structure, which is then reinforced using mechanical, thermal, or chemical methods. Current nonwoven fabric production equipment mainly includes an opening machine, a carding machine, a web-laying machine, and a needle-punching machine. The opening machine loosens the textile fibers and feeds them to the carding machine. The carded fibers are then fed to the web-laying machine to form a web. The web-laying machine then sends the web to the needle-punching machine, ultimately forming the nonwoven fabric product. The web-laying machine is a crucial component of a complete nonwoven fabric production system. In the production process, single-layer textile fiber webs need to be laid by the web-laying machine to form multiple layers of textile fiber webs of a certain thickness. These layers are then pressed and bonded together by hot rollers to form a single piece of nonwoven fabric. In the process of folding the web into a web, existing web-laying machines are prone to producing fine cotton fibers due to static electricity, airflow, and the effect of the web-laying curtain. After the web-laying machine has been running for a long time, these fine cotton fibers will clog the pressure rollers, guide rollers, and other mechanical components of the web-laying machine, causing the web-laying machine to malfunction and affecting production efficiency and progress. The most common approach to solving this problem involves arranging a suction fan and a suction tube perpendicular to the direction of the textile fiber output on the upper layer of the machine frame to recover the loose cotton fibers, as illustrated in Chinese Invention Patent CN106400309B. While this method is simple in structure and low in cost, the suction tube increases the negative pressure loss of the suction fan. To achieve the desired cleaning effect, the power of the suction fan must be increased, which can lead to localized negative pressure overload on the suction tube (near the suction fan side). This can cause the ends of the folded fiber web to lift up, affecting the neatness of the web. Therefore, a new method of cotton suction is urgently needed. In view of this, we propose a cotton suction mechanism for a nonwoven fabric web laying machine. Summary of the Invention

[0003] 1. Technical problems to be solved

[0004] The purpose of this invention is to provide a cotton suction mechanism for a nonwoven fabric web laying machine to solve the problems mentioned in the background art.

[0005] 2. Technical Solution

[0006] A cotton suction mechanism for a nonwoven fabric web laying machine, the cotton suction mechanism being arranged on the upper layer of the web laying machine frame, comprising: an array-type cotton suction system; wherein the cotton suction method of the array-type cotton suction system is a dot matrix suction; a split negative pressure system, arranged on the web laying machine frame and connected to the array-type cotton suction system; and a dual-axis drive system, arranged between the array-type cotton suction system and the split negative pressure system; wherein one end of the dual-axis drive system is intermittently driven by the array-type cotton suction system, and the other end of the dual-axis drive system is rotatably connected to the split negative pressure system. This invention provides a novel cotton suction mechanism for a web-laying machine. Compared to the existing straight-tube continuous cotton suction method, this invention constructs a dot-matrix cotton suction structure consisting of an array-type suction system, a split-type negative pressure system, and a dual-axis drive system. The dual-axis drive system synchronously drives the array-type suction system and the split-type negative pressure system, allowing the array-type suction system to maximize the use of negative pressure airflow to capture cotton lint under rated negative pressure power and suction airflow conditions. Each suction port independently captures cotton lint under rated airflow. Compared to the existing straight-tube continuous cotton suction method, this invention not only provides dispersion time for cotton lint but also facilitates rapid localized processing of cotton lint through dot-matrix intermittent suction. This reduces the lifting of the folded fiber web when using a high-power suction fan for continuous suction, thus saving energy and reducing emissions. Furthermore, it eliminates static electricity from the captured cotton lint, preventing greater risks caused by charge accumulation and secondary dispersion under static electricity.

[0007] Preferably, the array-type cotton suction system includes at least two cotton suction heads.

[0008] Preferably, the suction head includes: a cover body; wherein the outer circumferential wall of the cover body has an arc-shaped groove; a mechanical iris (the mechanical iris structure is an existing structure, including two parallel fixed blade rings, a movable blade ring arranged between the two fixed blade rings, and multiple overlapping arc-shaped metal blades, the size of the central circular aperture is changed by the opening and closing of the blades), arranged at the bottom opening of the cover body; a diaphragm spring, pressed into the mechanical iris; wherein the small end of the diaphragm spring is away from the hole of the mechanical iris; a toothed ring, arranged in the arc-shaped groove and connected to the movable blade ring of the mechanical iris; a sleeve, threaded onto the toothed ring; wherein one end of the sleeve contacts the small end of the diaphragm spring, and the other end of the sleeve extends out of the cover body to the outside; and the sleeve slides linearly with the cover body through a shaft key; a spring-loaded spring, sleeved on the outside of the sleeve; wherein one end of the spring-loaded spring is connected and fixed to the surface of the toothed ring, and the other end of the spring-loaded spring is connected and fixed to the inner wall of the cover body. When the dual-axis drive system drives multiple suction heads, the aperture of the mechanical iris changes from an expanded state to a closed state (not completely closed). At this time, under the condition of rated negative pressure airflow, the size of the aperture affects the negative pressure airflow, allowing discrete cotton lint to be captured quickly in localized areas. Compared with existing cotton suction methods, this invention not only reduces the power of the suction fan that needs to be arranged, which is beneficial for energy saving, but also increases the contact between the cotton lint adsorbed in strands and the diaphragm spring when passing through the suction aperture (small diameter). This is beneficial for guiding the static electricity on the cotton lint to the ground for static electricity elimination. The conical diaphragm spring is also beneficial for guiding the cotton lint in strands, improving the cotton lint throughput.

[0009] Preferably, the diaphragm spring is connected to the ground via a grounding wire. When the diaphragm spring is conical in its normal state, it facilitates the flow guidance and static electricity elimination of cotton lint passing through it. When the diaphragm spring is compressed into a flat state by the sleeve, it helps to reduce the ventilation volume of the mechanical iris when the blades expand, so that most of the negative pressure airflow is concentrated on the open suction head.

[0010] Preferably, the mechanical iris, diaphragm spring, and sleeve are located on the same vertical axis, which is beneficial for the negative pressure capture of cotton lint and improves the throughput of cotton lint in the array-type cotton suction system.

[0011] Preferably, the split negative pressure system includes: a negative pressure main pipe arranged on the frame of the web laying machine; wherein the output end of the negative pressure main pipe is connected to an external suction fan; at least two negative pressure branch pipes arranged in a split structure at the input end of the negative pressure main pipe; wherein the number of negative pressure branch pipes is adapted to the number of suction heads; and the negative pressure branch pipes are movably connected to the sleeve; and the negative pressure branch pipes are provided with rotating grooves on their circumference.

[0012] Preferably, the dual-axis drive system includes: a dual-axis motor, which is connected and fixed to the cover via a motor mount; a drive tooth, which is sleeved on one end of the dual-axis motor; wherein the drive tooth has at least one tooth groove on its circumference, and the tooth groove meshes with a tooth ring; a ventilation circular plate, which is sleeved on the other end of the dual-axis motor and connected to the rotating groove; wherein the ventilation circular plate has a through hole corresponding to the position of the tooth groove; wherein the size of the through hole is adapted to the size of the negative pressure branch pipe.

[0013] 3. Beneficial effects

[0014] Compared with the prior art, the advantages of this invention are:

[0015] 1. This invention provides a novel cotton suction mechanism for a web-laying machine. Compared to the existing straight-tube continuous cotton suction method, this invention constructs a dot-matrix cotton suction structure consisting of an array-type suction system, a split-type negative pressure system, and a dual-axis drive system. The dual-axis drive system synchronously drives the array-type suction system and the split-type negative pressure system, enabling the array-type suction system to maximize the use of negative pressure airflow to capture cotton lint under rated negative pressure power and suction airflow conditions. That is, each suction port independently captures cotton lint under rated airflow. Compared to the existing straight-tube continuous cotton suction method, this invention not only provides dispersion time for cotton lint, but also the dot-matrix intermittent suction facilitates localized and rapid processing of cotton lint. On the one hand, it reduces the phenomenon of lifting the folded fiber web when arranging high-power suction fans for continuous cotton suction, thus achieving energy saving and emission reduction. On the other hand, it performs electrostatic elimination treatment on the captured cotton lint, avoiding greater risks caused by the accumulation of charge in the cotton lint and secondary dispersion under electrostatic effects.

[0016] 2. When the dual-axis drive system drives multiple suction heads, the aperture of the mechanical iris changes from an expanded state to a closed state (not completely closed). At this time, under the condition of rated negative pressure airflow, the size of the aperture affects the negative pressure airflow, so that discrete cotton lint can be quickly captured locally. Compared with the existing cotton suction method, the present invention not only reduces the power of the suction fan that needs to be arranged, which is conducive to energy saving, but also increases the contact between the cotton lint adsorbed in strands and the diaphragm spring when passing through the suction aperture (small diameter). This is conducive to guiding the static electricity on the cotton lint to the ground for static electricity elimination. The conical diaphragm spring is also conducive to guiding the cotton lint in strands, improving the cotton lint throughput. Attached Figure Description

[0017] Figure 1 This is a top view of the overall structure of the present invention;

[0018] Figure 2 This is a bottom view of the overall structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the connection structure between the suction head and the drive teeth in this invention;

[0020] Figure 4 This is a schematic diagram of the split negative pressure system in this invention;

[0021] Figure 5 This is a schematic diagram of the cotton suction head in this invention;

[0022] Figure 6 This is a top view schematic diagram of part of the cotton suction head structure in this invention;

[0023] Figure 7 This is a bottom view schematic diagram of part of the cotton suction head structure in this invention;

[0024] Figure 8 This is a schematic diagram of the first embodiment of the toothed groove and through hole in this invention;

[0025] Figure 9 This is a schematic diagram of a second embodiment of the toothed groove and through hole in this invention;

[0026] Figure 10 This is a schematic diagram of a third embodiment of the toothed groove and through hole in this invention;

[0027] The labels in the diagram are as follows: 1. Array-type cotton suction system; 2. Split-type negative pressure system; 3. Dual-axis drive system;

[0028] 11. Absorbent tip;

[0029] 111. Cover; 112. Mechanical iris; 113. Diaphragm spring; 114. Gear ring; 115. Sleeve; 116. Clockwork spring;

[0030] 1111, Arc-shaped groove;

[0031] 21. Negative pressure main pipe; 22. Negative pressure branch pipe;

[0032] 221. Rotating groove;

[0033] 31. Dual-shaft motor; 32. Drive gear; 33. Ventilation circular plate;

[0034] 321. Glandular groove;

[0035] 331. Through hole. Detailed Implementation

[0036] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0037] In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Please see Figures 1 to 10 The present invention provides a technical solution:

[0039] A cotton suction mechanism for a nonwoven fabric web laying machine is arranged on the upper layer of the web laying machine frame, comprising: an array-type cotton suction system 1; wherein the cotton suction method of the array-type cotton suction system 1 is dot matrix suction; a split negative pressure system 2, arranged on the web laying machine frame and connected to the array-type cotton suction system 1; and a dual-axis drive system 3, arranged between the array-type cotton suction system 1 and the split negative pressure system 2; wherein one end of the dual-axis drive system 3 is intermittently driven by the array-type cotton suction system 1, and the other end of the dual-axis drive system 3 is rotatably connected to the split negative pressure system 2. This invention provides a novel cotton suction mechanism for a web-laying machine. Compared to the existing straight-tube continuous cotton suction method, this invention constructs a dot-matrix cotton suction structure consisting of an array-type suction system 1, a split-type negative pressure system 2, and a dual-axis drive system 3. The dual-axis drive system 3 synchronously drives the array-type suction system 1 and the split-type negative pressure system 2, enabling the array-type suction system 1 to maximize the use of negative pressure airflow to capture cotton lint under rated negative pressure power and suction airflow conditions. That is, each suction port independently captures cotton lint under rated airflow. Compared to the existing straight-tube continuous cotton suction method, this invention not only provides dispersion time for cotton lint, but also the dot-matrix intermittent suction facilitates localized and rapid processing of cotton lint. On the one hand, it reduces the phenomenon of lifting the folded fiber web when arranging high-power suction fans for continuous cotton suction, thus achieving energy saving and emission reduction. On the other hand, it performs electrostatic elimination treatment on the captured cotton lint, avoiding greater risks caused by the accumulation of charge in the cotton lint and secondary dispersion under electrostatic effects.

[0040] Specifically, the array-type cotton suction system 1 includes at least two cotton suction heads 11. For example... Figure 1 and Figure 2 As shown, the present invention provides a detailed explanation of the technical solution using four suction heads 11 arranged in a rectangular array.

[0041] For ease of understanding, such as Figure 3 , Figures 5 to 7 As shown, the present invention also discloses a more specific structural schematic diagram of the suction head 11. The suction head 11 includes: a cover 111; wherein, an arc-shaped groove 1111 is formed on the outer circumference of the cover 111; a mechanical iris 112 (the mechanical iris structure is an existing structure, including two parallel fixed blade rings, a moving blade ring arranged between the two fixed blade rings, and multiple overlapping arc-shaped metal blades, the size of the central circular aperture is changed by the opening and closing of the blades), arranged at the bottom opening of the cover 111; a diaphragm spring 113, pressed into the mechanical iris 112; wherein, the small end of the diaphragm spring 113 is far away from the mechanical iris 112 and forms a hole; a toothed ring 114, arranged in the arc-shaped groove 1111 and connected to the moving blade ring of the mechanical iris 112; and a sleeve 115, threaded onto the toothed ring 114; wherein, one end of the sleeve 115 is connected to the small end of the diaphragm spring 113. The sleeve 115 is in contact with the head end, and the other end of the sleeve 115 extends out of the cover 111 to the outside. The sleeve 115 slides linearly with the cover 111 via a shaft key. When the dual-axis drive system 3 drives the gear ring 114 to rotate, the gear ring 114 drives the moving blade ring in the mechanical iris 112 to rotate. At this time, multiple metal blades engage and disengage to change the size of the hole. At the same time, during the rotation of the gear ring 114, the sleeve 115, which is threaded to the gear ring 114, undergoes a lifting and lowering motion under the limiting action of the shaft key. "Lifting" corresponds to "engaging" of the mechanical iris 112, and "lowering" corresponds to "disengaging" of the mechanical iris 112. A spring 116 is sleeved on the outside of the sleeve 115. One end of the spring 116 is fixedly connected to the surface of the gear ring 114, and the other end of the spring 116 is fixedly connected to the inner wall of the cover 111, which is conducive to the reset of the gear ring 114 after rotation. When the dual-axis drive system 3 drives multiple suction heads 11, the aperture of the mechanical iris 112 changes from an expanded state to a closed state (not completely closed). At this time, under the condition of rated negative pressure airflow, the size of the aperture affects the negative pressure airflow, so that discrete cotton lint can be quickly captured locally. Compared with the existing cotton suction method, the present invention not only reduces the power of the suction fan that needs to be arranged, which is conducive to energy saving, but also increases the contact between the cotton lint adsorbed in strands and the diaphragm spring 113 when passing through the suction aperture (small diameter). This is conducive to guiding the static electricity on the cotton lint to the ground for static electricity elimination treatment. The conical diaphragm spring 113 is also conducive to guiding the cotton lint in strands, improving the cotton lint throughput.

[0042] It is worth noting that the diaphragm spring 113 is connected to the ground via a grounding wire. When the diaphragm spring 113 is conical in its normal state, it facilitates the flow guidance and static electricity elimination of cotton lint passing through it. When the diaphragm spring 113 is compressed into a flat state by the sleeve 115, it helps to reduce the ventilation volume of the mechanical iris 112 when the blades expand, so that most of the negative pressure air volume is concentrated on the open suction head 11.

[0043] It is worth noting that the mechanical iris 112, diaphragm spring 113 and sleeve 115 are located on the same vertical axis, which is conducive to the negative pressure capture of cotton lint and improves the throughput of cotton lint in the array-type cotton suction system 1.

[0044] For ease of understanding, such as Figure 4 As shown, the present invention also discloses a more specific structural schematic diagram of the split negative pressure system 2. The split negative pressure system 2 includes: a negative pressure main pipe 21, which can be arranged on the frame of the web laying machine by conventional fixed installation of pipes; wherein, the output end of the negative pressure main pipe 21 is connected to an external suction fan; at least two negative pressure branch pipes 22, arranged in a split structure at the input end of the negative pressure main pipe 21; wherein, the number of negative pressure branch pipes 22 is adapted to the number of suction heads 11; and, the negative pressure branch pipes 22 are movably connected to the sleeve 115; and, the negative pressure branch pipes 22 are provided with rotating grooves 221 on their circumference. The present invention uses four suction heads 11 as an example to illustrate the technical solution details. Of course, the number of negative pressure branch pipes 22 is matched with the number of suction heads 11, such as... Figure 2 As shown, when one suction head 11 tends to close, the other three return to normal (expanded state) under the compound force of the spring 116. At this time, the suction head 11 that tends to close and its negative pressure branch pipe 22 and negative pressure main pipe 21 form a suction channel to complete the local suction of cotton in the web laying machine. The other three suction heads 11 in normal state are to provide air intake for the gaps in the structure (the gaps in the structure refer to the gaps between the above-mentioned suction structures) when the suction channel is in the open state (connected state). On the one hand, this avoids the negative pressure of the suction fan from being too large and causing damage. On the other hand, it allows the three suction heads 11 in normal state to still provide a weak airflow (relative to the suction head 11 in the pass state) to attract discrete cotton lint. When the corresponding suction head 11 is in the pass state, it can complete the local rapid suction process.

[0045] For ease of understanding, such as Figure 3 , Figures 8 to 10As shown, the present invention also discloses a more specific structural schematic diagram of the dual-axis drive system 3. The dual-axis drive system 3 includes: a dual-axis motor 31, which is connected and fixed to the cover 111 via a motor base; a drive tooth 32, which is sleeved on one end of the dual-axis motor 31; wherein, the drive tooth 32 has at least one groove 321 on its circumference. Taking the four cotton suction heads 11 in the present invention as an example, the arc of the groove 321 is a quarter circle arc, and the groove 321 is meshed with the toothed ring 114 with a clearance; a ventilation circular plate 33, which is sleeved on the other end of the dual-axis motor 31 and connected to the rotating groove 221; wherein, the ventilation circular plate 33 has a through hole 331 corresponding to the position of the groove 321; wherein, the size of the through hole 331 is adapted to the size of the negative pressure branch pipe 22. When the through hole 331 intersects with the cotton suction channel, it is the passage state of the channel. When the through hole 331 does not intersect with the cotton suction channel, it is the open state of the channel.

[0046] In order to arrange the cotton suction method according to the actual production situation, in one embodiment, such as Figure 8 As shown, the toothed groove 321 is an independent segment. At this time, the number of through holes 331 is unique. That is, in the current implementation environment of the four cotton suction heads 11, it means that the four cotton suction heads 11 are in a cyclical gap with independent on and off state. That is, when one cotton suction head 11 is performing high airflow local cotton suction in the cotton suction channel passage state, the other three cotton suction heads 11 maintain a low airflow adsorption state.

[0047] In order to arrange the cotton suction method according to the actual production situation, in one embodiment, such as Figure 9 As shown, the toothed groove 321 is two consecutive segments. At this time, the number of through holes 331 is two side by side. That is, in the current implementation environment of the four cotton suction heads 11, it means that the four cotton suction heads 11 are continuously suctioning cotton in pairs. That is, when two cotton suction heads 11 are performing high airflow local cotton suction in the cotton suction channel passage state, the other two cotton suction heads 11 maintain a low airflow adsorption state.

[0048] In order to arrange the cotton suction method according to the actual production situation, in one embodiment, such as Figure 10 As shown, the toothed groove 321 is a gap between two sections. At this time, the number of through holes 331 is two opposite. That is, in the current implementation environment of the four cotton suction heads 11, it means that the four cotton suction heads 11 are continuously and symmetrically suctioning cotton in pairs. That is, when two cotton suction heads 11 are performing high airflow local cotton suction in the cotton suction channel, the other two cotton suction heads 11 maintain a low airflow adsorption state.

[0049] In summary, in order to improve cotton absorption efficiency, and considering the numerous embodiments not described above, those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of the invention and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A cotton suction mechanism for a nonwoven fabric web laying machine, wherein the cotton suction mechanism is arranged on the upper layer of the web laying machine frame, characterized in that, include: Array-type cotton suction system (1); The cotton suction method of the array-type cotton suction system (1) is dot matrix suction; A split negative pressure system (2) is arranged on the frame of the web laying machine and connected to the array-type cotton suction system (1). A dual-axis drive system (3) is arranged between the array-type cotton suction system (1) and the split-type negative pressure system (2); Wherein, one end of the dual-axis drive system (3) is driven by the array-type cotton suction system (1) with a gap, and the other end of the dual-axis drive system (3) is rotatably connected to the split-type negative pressure system (2); The array-type cotton suction system (1) includes at least two cotton suction heads (11). The absorbent head (11) includes: Cover (111); The outer circumferential wall of the cover (111) is provided with an arc-shaped groove (1111). A mechanical iris (112) is arranged at the bottom opening of the cover (111); A diaphragm spring (113) is pressed into the mechanical iris (112); The small end of the diaphragm spring (113) is formed away from the mechanical iris (112); A toothed ring (114) is arranged in the arc-shaped groove (1111) to connect the moving blade ring of the mechanical iris (112); The sleeve (115) is threaded onto the toothed ring (114); One end of the sleeve (115) contacts the small end of the diaphragm spring (113), and the other end of the sleeve (115) extends out of the cover (111) to the outside. Furthermore, the sleeve (115) slides linearly with the cover (111) via a key; A spring (116) is sleeved on the outside of the sleeve (115); One end of the spring (116) is connected and fixed to the surface of the toothed ring (114), and the other end of the spring (116) is connected and fixed to the inner wall of the cover (111). The split negative pressure system (2) includes: The negative pressure main pipe (21) is arranged on the frame of the web laying machine; The output end of the negative pressure main pipe (21) is connected to an external suction fan; At least two negative pressure branch pipes (22) are arranged in a split structure at the input end of the negative pressure main pipe (21); The number of negative pressure branch pipes (22) is matched with the number of suction heads (11); Furthermore, the negative pressure branch pipe (22) is movably connected to the sleeve (115); Furthermore, a rotating groove (221) is provided on the circumference of the negative pressure branch pipe (22). The dual-axis drive system (3) includes: A dual-axis motor (31) is connected and fixed to the cover (111) via a motor mount; The drive gear (32) is sleeved on one end of the dual-axis motor (31); The drive tooth (32) has at least one tooth groove (321) on its circumference, and the tooth groove (321) meshes with the tooth ring (114) with a clearance. A ventilation circular plate (33) is sleeved on the other end of the dual-axis motor (31) and connected to the rotating groove (221). The ventilation circular plate (33) is provided with through holes (331) corresponding to the position of the toothed groove (321). The size of the through hole (331) is adapted to the size of the negative pressure branch pipe (22).

2. The cotton suction mechanism for a nonwoven fabric web-laying machine according to claim 1, characterized in that, The diaphragm spring (113) is connected to the ground via a grounding wire.

3. The cotton suction mechanism for a nonwoven fabric web-laying machine according to claim 2, characterized in that, The mechanical iris (112), diaphragm spring (113), and sleeve (115) are located on the same vertical axis.

Images