A production process of multifunctional automobile sound-absorbing cotton

Through the multi-functional automotive sound-absorbing cotton production process, equipment classification and static problems in the existing technology have been solved, and a variety of fibers are mixed and impurities are removed, which improves production applicability and quality and reduces costs.

CN114086312BActive Publication Date: 2024-12-20WUHAN FUOU INTERIOR DECORATION MATERIAL CO LTD
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Patent Information

Application Number
CN202111320982.9
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2021-11-09
Publication Date
2024-12-20
Estimated Expiration
2041-11-09

AI Technical Summary

Technical Problem

In the existing sound-absorbing cotton production process, the production of single type of non-woven fabrics leads to the classification of equipment and processes, which increases production costs, and the grid laying machine is prone to synchronous belt offset and static electricity problems, which reduces production quality.

Method used

Adopt multi-functional automotive sound-absorbing cotton production process, including multiple three-roll weighing and charter machines, cotton mixing machines, carding machines, mesh laying machines, hard cotton dryers, air coolers, ironing machines and rolling and cutting machines , combined with dust removal system and new mesh laying machine design, solves the problems of synchronous belt offset and static electricity, and realizes the mixing of multiple fibers and the removal of impurities.

Benefits of technology

It improves the production applicability and quality of sound-absorbing cotton, reduces production costs, and ensures product quality through uniform electrostatic removal and dust removal systems.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention belongs to the technical field of sound-absorbing cotton production, and in particular, relates to a production process of multifunctional automobile sound-absorbing cotton, which includes the following steps: multiple three-roller weighing and opening machines are set to preliminarily loosen various bundled fibers of different specifications and convey them to the cotton feeding curtain of the front machine; the conveyed raw materials are further loosened by the pre-opening machine, and then conveyed to the cotton storage bin of the mixing machine through the cotton conveying fan; the large-bin mixing machine fully mixes and stores various opened fibers to achieve the effect of continuous production; the raw materials conveyed from the large-bin mixing box are further loosened by the fine opening machine, and then conveyed to the cotton storage bin of the mixing machine through the cotton conveying fan; the opened and mixed fibers are formed into uniform and dense mat cotton and fed into the combing machine through the vibrating cotton feeder. The production process of the present invention is suitable for mixing, loosening and removing impurities in the raw materials of various different fibers, and the raw materials are fed into the cotton box of the machine for work.
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Description

Technical Field

[0001] The invention relates to the technical field of sound-absorbing cotton production, and in particular to a production process of multifunctional automobile sound-absorbing cotton. Background Art

[0002] As people's consumption awareness continues to improve, customers have higher and higher requirements for vehicle sound absorption, sound insulation, lightweight, comfort, etc., and the requirements for vehicle interior materials are also more stringent. The comfort of vehicle interiors is also reflected in functional characteristics such as shock absorption and sound absorption.

[0003] The existing production process of sound-absorbing cotton usually produces a single type of non-woven fabric, which relatively reduces the applicability of production, that is, different equipment and processes are required for classified production, and the cost of production is increased; in addition, in the production of non-woven fabrics, the cross-lapping process that has been continued is to input the fiber web into the cross-lapping machine through the mesh input curtain, and use the cross-lapping machine's trolley to reciprocate and stack the fiber web on an output curtain that moves in a straight line at 90° to the running direction of the fiber web; what is output from the output curtain is a continuously cross-laminated cotton web, which is then spunlace and dried to become a non-woven finished product, but the existing laminating machine is prone to synchronous belt deviation during use, which reduces the production quality, and static electricity will also occur during the processing, which requires corresponding treatment to ensure the production quality of the sound-absorbing cotton.

[0004] Therefore, we propose a production process of multifunctional automobile sound-absorbing cotton to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a production process for multifunctional automobile sound-absorbing cotton.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A production process of multifunctional automobile sound-absorbing cotton comprises the following steps:

[0008] S1. Set up multiple three-roller weighing and opening machines to initially loosen the various bales of fibers of different specifications and transport them to the cotton feeding curtain of the front machine;

[0009] S2, the raw materials delivered are further loosened by the pre-opening conveyor, and then transported to the cotton storage bin of the cotton mixer through the cotton conveying fan;

[0010] S3, large-bin blending machine fully mixes and stores various opened fibers to achieve continuous production;

[0011] S4, the raw materials transported from the large warehouse mixing box are further loosened by the fine opening and conveying machine, and then transported to the cotton storage bin of the mixing machine through the cotton conveying fan;

[0012] S5, the vibrating cotton feeder is used to feed the loosened and mixed fibers into a uniform and dense mat cotton, and the carding machine combs the mat cotton output from the vibrating cotton feeder into a web, and processes the web into a quantitative fiber web basically composed of single fibers, and then delivers it to the subsequent process;

[0013] S6, the fiber web output by the carding machine is evenly folded by the web laying machine, laid to the required width and thickness, and then transported to the next process;

[0014] S7, conveying the fiber web processed by the web laying machine to a hard cotton drying machine for hot air drying to form hard cotton and glue-free cotton;

[0015] S8, forced cooling and shaping of the hard cotton and non-glue cotton coming out of the oven by means of an air cooling machine;

[0016] S9. Use a two-roller ironing machine to iron the surface of hard cotton and non-glue cotton to make the product surface smoother;

[0017] S10, the hard cotton and the non-glue cotton are trimmed, counted, curled and collected by a winding and cutting machine.

[0018] In the above-mentioned production process of the multifunctional automobile sound-absorbing cotton, a dust removal system is provided during the entire operation process to filter and collect short fibers and dust in the air flow passing through the machine.

[0019] In the above-mentioned production process of multifunctional automobile sound-absorbing cotton, the three-roller weighing and opening machine in step S1 adopts a three-roller opening structure, which can initially loosen the fibers. One of them is a fully enclosed weighing and opening machine for recycling scraps and is equipped with a simple cotton condenser.

[0020] In the above-mentioned production process of multifunctional automobile sound-absorbing cotton, the air duct of the hard cotton dryer in step S7 adopts a new flow guide design to make the air volume evenly distributed, the air nozzle adopts a pull-out flow guide nozzle for easy cleaning, Teflon mesh is installed on the upper and lower layers of the oven, and an automatic correction device is provided. The heating method is natural gas heating, and an exhaust air duct is installed on the top of the box to discharge the exhaust gas inside the drying room.

[0021] In the above-mentioned production process of multifunctional automobile sound-absorbing cotton, the web laying machine used in step S6 includes the following structure:

[0022] A housing assembly, the housing assembly comprising a frame body;

[0023] A cross-feed assembly, the cross-feed assembly comprising a front curtain and a rear curtain, the front curtain and the rear curtain are relatively arranged on the upper inner side of the frame body, and a plurality of first transmission rollers and second transmission rollers connected to the front curtain and the rear curtain are evenly arranged on the inner wall of the frame body;

[0024] A driving assembly, the driving assembly comprising a bracket arranged on an outer side wall of the frame body, a first motor being arranged on the side wall of the bracket, and the first motor being connected to one of the first transmission rollers and the second transmission roller via a transmission unit;

[0025] A material feeding assembly, the material feeding assembly comprising a belt conveyor arranged inside the frame body, the belt conveyor being arranged under the front curtain and the rear curtain correspondingly, and a material feeding port corresponding to the belt conveyor being opened on the side wall of the frame body;

[0026] The static electricity removal component includes a static electricity removal rod, which is correspondingly arranged in the frame body and located on the upper side of the belt conveyor. A reciprocating adjustment unit connected to the static electricity removal rod is arranged in the frame body.

[0027] In the above-mentioned multifunctional automotive sound-absorbing cotton production laying machine, an inclined material guide frame is arranged on the side wall of the frame body, a column in contact with the ground is arranged at the lower end of the material guide frame, a conveyor belt corresponding to the input end of the front curtain is arranged on the inner side of the material guide frame, a second motor and a reduction box for driving the conveyor belt are arranged on the outer side wall of the frame body, the output end of the conveyor belt is higher than the input end of the front curtain, and a downwardly inclined material guide plate is arranged on the inner wall of the frame body between the conveyor belt and the front curtain.

[0028] In the above-mentioned multifunctional automotive sound-absorbing cotton production laying machine, the transmission unit includes a first gear and a second gear respectively arranged on the outer side walls of the first transmission roller and the second transmission roller, and the first gear and the second gear are meshed and connected and correspondingly arranged on the inner side of the bracket.

[0029] In the above-mentioned multifunctional automotive sound-absorbing cotton production laying machine, a limiting unit corresponding to the front curtain and the rear curtain is arranged on the outer side wall of the frame body, and the limiting unit includes a rectangular shell arranged on the side wall of the frame body, and the two ends of the rectangular shell pass through the frame body, and the rectangular shell side wall on the inner side of the frame body is provided with a rectangular opening corresponding to the front curtain and the rear curtain, and an adjusting screw is arranged on the side wall of the rectangular shell, one end of the adjusting screw extends into the rectangular shell and is connected to a U-shaped plate with a notch facing the rectangular opening, and a plurality of limiting rollers are rotatably connected in the notch of the U-shaped plate, and the limiting rollers are fittedly connected to the side walls of the front curtain and the rear curtain.

[0030] In the above-mentioned multifunctional automotive sound-absorbing cotton production laying machine, the reciprocating adjustment unit includes two strip grooves arranged on the inner wall of the frame body, a reciprocating screw is rotatably connected in the strip groove, a third motor connected to the reciprocating screw is arranged on the outer wall of the frame body, and a moving block connected to the anti-static rod is arranged on the outer side of the reciprocating screw.

[0031] Compared with the prior art, the advantages of the production process of the multifunctional automobile sound-absorbing cotton are:

[0032] 1. The production process of the present invention is suitable for mixing and opening a variety of different fibers and removing impurities from the raw materials, and the raw materials are fed into the cotton box of the machine to work.

[0033] 2. The web laying machine used in the present invention can solve the problem of synchronous belt deviation accordingly, and the reciprocating structure can achieve uniform static removal during the static removal process, which relatively improves the static removal effect and helps to improve the production quality of sound-absorbing cotton. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A production process step diagram of a production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention;

[0035] Figure 2 A structural diagram of a web laying machine for the production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention;

[0036] Figure 3 This is a structural diagram of one side of the transmission unit of a web laying machine of a production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention;

[0037] Figure 4 This is a diagram of the internal structure of the frame body of a production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention;

[0038] Figure 5 This is a structural diagram of a static electricity removal unit of a production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention;

[0039] Figure 6 This is a structural diagram of a limiting unit in the production process of a multifunctional automobile sound-absorbing cotton proposed by the present invention.

[0040] In the figure, 100 shell assembly, 101 frame body, 200 cross feed assembly, 201 front curtain, 202 rear curtain, 203 first transmission roller, 204 second transmission roller, 300 drive assembly, 301 bracket, 302 first motor, 400 transmission unit, 401 first gear, 402 second gear, 500 feeding assembly, 501 belt conveyor, 502 feeding port, 600 static elimination assembly, 601 static elimination rod, 700 reciprocating adjustment unit, 701 reciprocating screw, 702 third motor, 703 moving block, 800 guide rack, 801 column, 802 conveyor belt, 803 second motor, 804 reduction box, 805 guide plate, 900 limit unit, 901 rectangular shell, 902 adjustment screw, 903 U-shaped plate, 904 limit roller. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0042] Example

[0043] Reference Figure 1-6 , a production process of a multifunctional automobile sound-absorbing cotton, comprising the following steps:

[0044] S1. Set up multiple three-roller weighing and opening machines to initially loosen the various bales of fibers of different specifications and transport them to the cotton feeding curtain of the front machine;

[0045] S2, the raw materials delivered are further loosened by the pre-opening conveyor, and then transported to the cotton storage bin of the cotton mixer through the cotton conveying fan;

[0046] S3, large-bin blending machine fully mixes and stores various opened fibers to achieve continuous production;

[0047] S4, the raw materials transported from the large warehouse mixing box are further loosened by the fine opening and conveying machine, and then transported to the cotton storage bin of the mixing machine through the cotton conveying fan;

[0048] S5, the vibrating cotton feeder is used to feed the loosened and mixed fibers into a uniform and dense mat cotton, and the carding machine combs the mat cotton output from the vibrating cotton feeder into a web, and processes the web into a quantitative fiber web basically composed of single fibers, and then delivers it to the subsequent process;

[0049] S6, the fiber web output by the carding machine is evenly folded by the web laying machine, laid to the required width and thickness, and then transported to the next process;

[0050] S7, conveying the fiber web processed by the web laying machine to a hard cotton drying machine for hot air drying to form hard cotton and glue-free cotton;

[0051] S8, forced cooling and shaping of the hard cotton and non-glue cotton coming out of the oven by means of an air cooling machine;

[0052] S9. Use a two-roller ironing machine to iron the surface of hard cotton and non-glue cotton to make the product surface smoother;

[0053] S10, the hard cotton and the non-glue cotton are trimmed, counted, curled and collected by a winding and cutting machine.

[0054] Among them, during the whole operation process, a dust removal system is set up to filter and collect short fibers and dust in the air flow passing through the machine. The dust removal system includes a sealed box body, which is made of high-quality cold-rolled steel plate and assembled by laser, CNC bending and welding. The installation is easy and accurate; the multi-drum machine is made of selected profiles with high strength. The first-stage filter disc is composed of a rotating suction nozzle, a stainless steel wire mesh frame and a belt drive mechanism. The filter mesh number and the first-stage suction nozzle speed can be selected according to different process occasions. The fiber presser and dust compactor collect long fibers and dust. The second-stage double-suction dust collector adopts a new long-haired filter cloth with low resistance and high filtration efficiency; the filter cloth is supported by a steel wire grid, and the filter cloth has a good molding effect.

[0055] Among them, the three-roller weighing and opening machine in step S1 adopts a three-roller opening structure, which can perform preliminary opening of the fibers. One of them is a fully enclosed weighing and opening machine for recycling scraps and is equipped with a simple cotton condenser. The outer diameter of the leveling and stripping rollers including spikes is φ480mm, and there are 3 rows of spikes. This equipment is used for the production of various hot-melt non-woven fabrics such as hard cotton and glue-free cotton.

[0056] Furthermore, in step S7, the air duct of the hard cotton dryer adopts a new guide design to make the air volume evenly distributed, the air nozzle adopts a pull-out guide nozzle for easy cleaning, Teflon meshes are installed on the upper and lower layers of the oven, and an automatic correction device is provided. The heating method is natural gas heating, and an exhaust air duct is installed on the top of the box to discharge the exhaust gas inside the drying room. This method is suitable for mixing and loosening a variety of different fibers and removing impurities in the raw materials, and the raw materials are fed into the cotton box of the machine to work.

[0057] The web laying machine used in step S6 includes the following structure:

[0058] The shell assembly 100, the cross-feed assembly 200, the drive assembly 300, the feed assembly 500 and the static electricity removal assembly 600, the shell assembly 100 includes a frame body 101; the cross-feed assembly 200 includes a front curtain 201 and a rear curtain 202, the front curtain 201 and the rear curtain 202 are relatively arranged on the upper inner side of the frame body 101, the drive assembly 300 includes a bracket 301 arranged on the outer side wall of the frame body 101, and a first motor 302 is arranged on the side wall of the bracket 301. The feed assembly 500 includes a belt conveyor 501 arranged on the inner side of the frame body 101, the belt conveyor 501 is correspondingly arranged on the lower side of the front curtain 201 and the rear curtain 202, and a feed port 502 corresponding to the belt conveyor 501 is opened on the side wall of the frame body 101.

[0059] Furthermore, an inclined material guide rack 800 is provided on the side wall of the frame body 101, and a column 801 in contact with the ground is provided at the lower end of the material guide rack 800, and a conveyor belt 802 corresponding to the input end of the front curtain 201 is provided on the inner side of the material guide rack 800, and a second motor 803 and a reduction box 804 for driving the conveyor belt 802 are provided on the outer side wall of the frame body 101. The output end of the conveyor belt 802 is higher than the input end of the front curtain 201, and a downwardly inclined material guide plate 805 is provided on the inner wall of the frame body 101 between the conveyor belt 802 and the front curtain 201. By providing a material guide structure for feeding on the outer side of the frame body 101, the raw materials transmitted from the outside can be smoothly conveyed to the front curtain 201, and the speed of the material guiding can be adjusted by the cooperation of the second motor 803 and the reduction box 804.

[0060] Among them, a plurality of first transmission rollers 203 and second transmission rollers 204 connected to the front curtain 201 and the rear curtain 202 are evenly arranged on the inner wall of the frame body 101, and the first motor 302 is connected to one of the first transmission rollers 203 and the second transmission rollers 204 through a transmission unit 400. The transmission unit 400 includes a first gear 401 and a second gear 402 respectively arranged on the outer side walls of the first transmission roller 203 and the second transmission roller 204. The first gear 401 and the second gear 402 are meshed and connected and correspondingly arranged on the inner side of the bracket 301. Under the use of the transmission unit, the front curtain 201 and the rear curtain 202 can work at the same time, and the working directions of the front curtain 201 and the rear curtain 202 are opposite, that is, cross feeding can be performed.

[0061] Furthermore, a limiting unit 900 corresponding to the front curtain 201 and the rear curtain 202 is provided on the outer wall of the frame body 101, and the limiting unit 900 includes a rectangular shell 901 provided on the side wall of the frame body 101, and both ends of the rectangular shell 901 penetrate the frame body 101, and a rectangular opening corresponding to the front curtain 201 and the rear curtain 202 is provided on the side wall of the rectangular shell 901 inside the frame body 101, and an adjusting screw 902 is provided on the side wall of the rectangular shell 901, and one end of the adjusting screw 902 is A U-shaped plate 903 extending into the rectangular housing 901 and having a notch facing the rectangular opening is connected. A plurality of limiting rollers 904 are rotatably connected in the notch of the U-shaped plate 903. The limiting rollers 904 are closely connected to the side walls of the front curtain 201 and the rear curtain 202. By providing the limiting unit 900, the front curtain 201 and the rear curtain 202 can be limited, that is, the front curtain 201 and the rear curtain 202 can be ensured to be transmitted stably for a long time, the front curtain 201 and the rear curtain 202 can be prevented from being offset, and the stability of the structure is improved.

[0062] Among them, the static electricity removal component 600 includes a static electricity removal rod 601, which is correspondingly arranged in the frame body 101 and located on the upper side of the belt conveyor 501. A reciprocating adjustment unit 700 connected to the static electricity removal rod 601 is arranged in the frame body 101. The reciprocating adjustment unit 700 includes two strip grooves arranged on the inner wall of the frame body 101, and a reciprocating screw 701 is rotatably connected in the strip groove. A third motor 702 connected to the reciprocating screw 701 is arranged on the outer wall of the frame body 101, and a moving block 703 connected to the static electricity removal rod 601 is arranged on the outer side of the reciprocating screw 701. When the reciprocating adjustment unit 700 is used, the position of the static electricity removal rod 601 can be reciprocated, thereby achieving a uniform static electricity removal effect.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A production process of multifunctional automobile sound-absorbing cotton, It is characterized in that The following steps are involved: S1. Set up multiple three-roller weighing and opening machines to initially loosen the various bales of fibers of different specifications and transport them to the cotton feeding curtain of the front machine; S2, the raw materials delivered are further loosened by the pre-opening conveyor, and then transported to the cotton storage bin of the cotton mixer through the cotton conveying fan; S3, large-bin blending machine fully mixes and stores various opened fibers to achieve continuous production; S4, the raw materials transported from the large warehouse mixing box are further loosened by the fine opening and conveying machine, and then transported to the cotton storage bin of the mixing machine through the cotton conveying fan; S5, the vibrating cotton feeder forms a uniform and dense mat cotton into a carding machine after the fibers are opened and mixed, and the carding machine carding the mat cotton output from the vibrating cotton feeder into a web, and then processes the web into a quantitative fiber web composed of single fibers and delivers it to the subsequent process; S6, the fiber web output by the carding machine is evenly folded by the web laying machine, laid to the required width and thickness, and then transported to the next process; The web laying machine used in step S6 comprises the following structure: A housing assembly (100), the housing assembly (100) comprising a frame body (101); A cross-feed assembly (200), the cross-feed assembly (200) comprising a front curtain (201) and a rear curtain (202), the front curtain (201) and the rear curtain (202) being arranged relatively on the inner upper side of a frame body (101), and a plurality of first transmission rollers (203) and second transmission rollers (204) connected to the front curtain (201) and the rear curtain (202) being evenly arranged on the inner wall of the frame body (101); A driving assembly (300), the driving assembly (300) comprising a bracket (301) arranged on an outer side wall of a frame body (101), a first motor (302) being arranged on the side wall of the bracket (301), the first motor (302) being connected to one of the first transmission roller (203) and the second transmission roller (204) via a transmission unit (400), the transmission unit (400) comprising a first gear (401) and a second gear (402) respectively arranged on the outer side walls of the first transmission roller (203) and the second transmission roller (204), the first gear (401) and the second gear (402) being meshed and connected and correspondingly arranged on the inner side of the bracket (301); A material feeding assembly (500), the material feeding assembly (500) comprising a belt conveyor (501) arranged inside a frame body (101), the belt conveyor (501) being arranged correspondingly below the front curtain (201) and the rear curtain (202), and a material feeding port (502) corresponding to the belt conveyor (501) is provided on a side wall of the frame body (101); A static electricity removal component (600), the static electricity removal component (600) comprising a static electricity removal rod (601), the static electricity removal rod (601) being correspondingly arranged in the frame body (101) and located on the upper side of the belt conveyor (501), and a reciprocating adjustment unit (700) connected to the static electricity removal rod (601) being arranged in the frame body (101); An inclined material guide frame (800) is arranged on the side wall of the frame body (101); a column (801) in contact with the ground is arranged at the lower end of the material guide frame (800); a conveyor belt (802) corresponding to the input end of the front curtain (201) is arranged on the inner side of the material guide frame (800); a second motor (803) and a reduction box (804) for driving the conveyor belt (802) are arranged on the outer side wall of the frame body (101); the output end of the conveyor belt (802) is higher than the input end of the front curtain (201); a downwardly inclined material guide plate (805) is arranged on the inner wall of the frame body (101) between the conveyor belt (802) and the front curtain (201); and limit stops (805) corresponding to the front curtain (201) and the rear curtain (202) are arranged on the outer side wall of the frame body (101). Unit (900), the limiting unit (900) comprising a rectangular shell (901) arranged on the side wall of a frame body (101), the two ends of the rectangular shell (901) passing through the frame body (101), and the side wall of the rectangular shell (901) inside the frame body (101) is provided with a rectangular opening corresponding to the front curtain (201) and the rear curtain (202), an adjusting screw (902) is arranged on the side wall of the rectangular shell (901), one end of the adjusting screw (902) extends into the rectangular shell (901) and is connected to a U-shaped plate (903) with a notch facing the rectangular opening, a plurality of limiting rollers (904) are rotatably connected in the notch of the U-shaped plate (903), and the limiting rollers (904) are closely connected to the side walls of the front curtain (201) and the rear curtain (202); S7, conveying the fiber web processed by the web laying machine to a hard cotton drying machine for hot air drying to form hard cotton and glue-free cotton; S8, forced cooling and shaping of the hard cotton and non-glue cotton coming out of the oven by means of an air cooling machine; S9. Use a two-roller ironing machine to iron the surface of hard cotton and non-glue cotton to make the product surface smoother; S10, the hard cotton and the non-glue cotton are trimmed, counted, curled and collected by a winding and cutting machine.

2. The production process of a multifunctional automobile sound-absorbing cotton according to claim 1, It is characterized in that During the entire operation, a dust removal system is set up to filter and collect short fibers and dust in the air flow passing through the machine.

3. The production process of a multifunctional automobile sound-absorbing cotton according to claim 1, It is characterized in that The three-roller weighing and opening machine in step S1 adopts a three-roller opening structure, which can initially open the fibers. One of the three-roller weighing and opening machines is a fully enclosed weighing and opening machine for recycling scraps and is equipped with a simple condenser.

4. The production process of a multifunctional automobile sound-absorbing cotton according to claim 1, It is characterized in that In step S7, the air duct of the hard cotton dryer adopts a new guide design to ensure uniform air volume distribution, the air nozzle adopts a pull-out guide nozzle for easy cleaning, Teflon mesh is installed on the upper and lower layers of the drying oven, and an automatic deviation correction device is provided. The heating method is natural gas heating, and an exhaust duct is installed on the top of the box to discharge the exhaust gas inside the drying room.

5. The production process of a multifunctional automobile sound-absorbing cotton according to claim 1, It is characterized in that The reciprocating adjustment unit (700) comprises two strip-shaped grooves arranged on the inner wall of the frame body (101), a reciprocating screw (701) being rotatably connected in the strip-shaped groove, a third motor (702) connected to the reciprocating screw (701) being arranged on the outer wall of the frame body (101), and a moving block (703) connected to the static electricity removal rod (601) being arranged on the outer side of the reciprocating screw (701).