Production device of sound-absorbing cotton material

Abstract

The utility model provides a production device of a sound-absorbing cotton material. The production device comprises a spinning box body, a lapping device, a fiber conveyor, a cotton web processor, a quantitative powder scattering device and a fiber mixing device, a containing cavity is formed in the middle of the spinning box body, and yarn outlet holes are formed in the bottom. Spinneret holes are formed in the bottom of the containing cavity, and air channels are formed in the two sides of the containing cavity. The lapping device is arranged below a yarn outlet hole of the spinning box body; the fiber conveyor is arranged on one side of the yarn outlet hole of the spinning box body; the web processor is used for processing the web to obtain short fibers in a single fiber state; the quantitative powder scattering device is arranged above the fiber conveyor and is used for uniformly scattering hot melt adhesive powder on short fibers in a single fiber state in the fiber conveyor; the fiber mixing device is arranged below one side of the output end of the fiber conveyor and used for generating negative pressure blowing force, so that short fibers in a single fiber state in the fiber conveyor move towards the output end of the fiber conveyor. The sound-absorbing cotton material can be produced by using the sound-absorbing cotton material production device.

Description

Technical Field

[0001] The present application relates to the technical field of non-woven textile material production, and in particular to a production device for sound-absorbing cotton material. Background Art

[0002] Two-component sound-absorbing cotton is a non-woven material composed of ultra-fine melt-blown polypropylene (PP) fibers with a diameter of 1-4 microns and polyester (PET) short fibers with a diameter of 20-30 microns. It is essentially a mixture of two types of fibers piled up flat. The material is fluffy with a large number of gaps, which are interlaced and penetrated inside the material. The gaps are open to the outside world, allowing sound waves to easily enter the gaps.

[0003] The structure of this two-component sound-absorbing cotton material with flat-laid fibers is relatively fluffy. The bonding of short fibers and melt-blown fibers depends on the melt-blown PP fibers being extruded from the spinneret and forming adhesion with the PET short fibers before cooling down during the process of reaching the web laying device. The bonding force between the two fibers is relatively weak, the internal cohesion of the material is small, and the material is easy to delaminate and scatter during use. Utility Model Content

[0004] In view of this, the utility model provides a production device for sound-absorbing cotton material, so as to generate sound-absorbing cotton material.

[0005] The technical solution of the utility model is specifically achieved as follows:

[0006] A production device for sound-absorbing cotton material, comprising: a spinning box, a web laying device, a fiber conveyor, a cotton web processor, a quantitative powder spreading device and a fiber mixing device;

[0007] The middle part of the spinning manifold is provided with a receiving cavity; the bottom of the spinning manifold is provided with a wire outlet hole; the bottom of the receiving cavity is provided with a spinneret hole connected with the wire outlet hole; both sides of the receiving cavity are provided with air ducts connected with the wire outlet hole;

[0008] The web laying device is arranged directly below the wire outlet hole of the spinning box;

[0009] The fiber conveyor is arranged on one side of the outlet hole of the spinning box;

[0010] The output end of the cotton web processor is connected to the input end of the fiber conveyor; the cotton web processor is used to process the cotton web to obtain short fibers in a single fiber state, and convey the short fibers in a single fiber state to the input end of the fiber conveyor;

[0011] The quantitative powder spreading device is arranged above the fiber conveyor and is used to evenly spread the hot melt adhesive powder on the short fibers in a single fiber state in the fiber conveyor;

[0012] The fiber mixing device is arranged below one side of the output end of the fiber conveyor; the fiber mixing device is used to generate negative pressure blowing force, so that the short fibers in the single fiber state in the fiber conveyor move toward the output end of the fiber conveyor.

[0013] Preferably, the quantitative powder spreading device comprises: a material barrel, an anilox roller and a metering scraper:

[0014] A material cavity is provided in the material barrel; a discharge port is provided at the bottom of the material cavity;

[0015] The anilox roller is rotatably arranged at the discharge port; a plurality of concave points are arranged on the outer wall of the anilox roller;

[0016] The metering scraper is arranged on one side of the rotation direction of the anilox roller and abuts against the outer wall of the anilox roller.

[0017] Preferably, the fiber mixing device comprises: a blower and an air duct:

[0018] The blower is used to output wind force to the input end of the air duct;

[0019] The output end of the air duct is arranged below one side of the output end of the fiber conveyor.

[0020] Preferably, the cotton web processor comprises: a cotton feeding roller and a licker-in roller:

[0021] The cotton feeding roller is used to hold the received cotton web;

[0022] The licker-in roller is used to open the cotton web into short fibers in a single fiber state and output them.

[0023] Preferably, the web laying device comprises: a conveyor web belt and an air suction box;

[0024] The top of the air suction box is provided with an air suction port; the bottom of the air suction box is provided with an air outlet;

[0025] The conveyor mesh belt is arranged on the upper part of the air suction port of the air suction box body and can move along a preset direction.

[0026] Preferably, the production device further comprises: a pressurizing device;

[0027] The pressurizing device is arranged above the accommodating chamber of the spinning manifold, and is used for outputting pressure to the accommodating chamber.

[0028] Preferably, the pressurizing device is a screw extruder.

[0029] Preferably, the production device further comprises: a ventilation and heating device;

[0030] The ventilation and heating device is arranged above the air ducts on both sides of the accommodating cavity, and is used to output hot air flow to the top of the air duct.

[0031] Preferably, the polymer melt is a polypropylene fiber melt.

[0032] Preferably, the short fibers are sheath-core fibers.

[0033] As can be seen from the above, in the production device of the sound-absorbing cotton material in the utility model, since a quantitative powder spreading device is arranged above the fiber conveyor, the hot melt adhesive powder can be evenly sprinkled on the short fibers in a single fiber state in the fiber conveyor, and the hot melt adhesive powder will also melt under the action of the hot air flow, thereby greatly enhancing the bonding force between the short fibers and the melt-blown fibers, so that the short fibers and the melt-blown fibers can be better bonded together, thereby generating a sound-absorbing cotton material, and greatly improving the fiber bonding force inside the material, and better improving the internal cohesion level of the overall structure of the sound-absorbing material. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of a production device for sound-absorbing cotton material in an embodiment of the utility model.

[0035] Figure 2 It is a schematic diagram of the structure of the quantitative powder spreading device in the embodiment of the utility model.

[0036] Figure 3 It is a schematic diagram of the anilox roller and the metering scraper in the embodiment of the utility model. DETAILED DESCRIPTION

[0037] In order to make the technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] Figure 1 It is a structural schematic diagram of a production device for sound-absorbing cotton material in an embodiment of the utility model.

[0039] like Figure 1 As shown, the production device of the sound-absorbing cotton material in the embodiment of the utility model includes: a spinning box 11, a web laying device 12, a fiber conveyor 13, a cotton web processor 14, a quantitative powder spreading device 15 and a fiber mixing device 16;

[0040] The middle of the spinning manifold 11 is provided with a receiving chamber 111; the bottom of the spinning manifold 11 is provided with a wire outlet hole 112; the bottom of the receiving chamber 111 is provided with a spinneret hole 113 connected to the wire outlet hole 112; both sides of the receiving chamber 111 are provided with air ducts 114 connected to the wire outlet hole 112;

[0041] The web laying device 12 is arranged directly below the wire outlet hole 112 of the spinning manifold 11;

[0042] The fiber conveyor 13 is arranged on one side of the fiber outlet hole 112 of the spinning manifold 11;

[0043] The output end of the cotton web processor 14 is connected to the input end of the fiber conveyor 13; the cotton web processor 14 is used to process the cotton web 10 to obtain short fibers in a single fiber state, and convey the short fibers in a single fiber state to the input end of the fiber conveyor 13;

[0044] The quantitative powder spreading device 15 is arranged above the fiber conveyor 13, and is used to evenly spread the hot melt adhesive powder on the short fibers in the single fiber state in the fiber conveyor 13;

[0045] The fiber mixing device 16 is arranged below one side of the output end of the fiber conveyor 13 ; the fiber mixing device 16 is used to generate negative pressure blowing force so that the short fibers in the single fiber state in the fiber conveyor 13 move toward the output end of the fiber conveyor 13 .

[0046] When using the above-mentioned production device in the present application, the polymer melt can be placed in the accommodating chamber of the spinning manifold, and a pressurizing device for outputting pressure can be arranged above the accommodating chamber, so that the polymer melt in the accommodating chamber can flow out from the spinneret hole under the action of pressure. In addition, high-speed hot air (i.e., hot air flow) can be introduced into the air ducts on both sides of the accommodating chamber through a ventilation and heating device. Therefore, the polymer melt flowing out of the spinneret hole will be stretched by the high-speed hot air in the air duct, and will be stretched to form ultra-fine melt-blown fibers, and then flow out from the outlet hole, and then fall onto the web laying device.

[0047] At the same time, the cotton web processor loosens the cotton web into short fibers in a single fiber state and then conveys the short fibers to the input end of the fiber conveyor. The fiber mixing device located below one side of the output end of the fiber conveyor can generate a negative pressure blowing force, so that the short fibers in a single fiber state in the fiber conveyor can move from the input end to the output end of the fiber conveyor. When the short fibers move to the output end, the quantitative powder spreading device can evenly sprinkle the hot melt adhesive powder on the short fibers. After the short fibers are output from the output end of the fiber conveyor, they will meet the melt-blown fibers falling from the wire outlet. The melt-blown fibers have not been completely cooled and solidified in the process of falling to the web laying device, so the melt-blown fibers will be mixed with the short fibers in a single fiber state output from the output end of the fiber conveyor, and then fall on the web laying device; the mixed fibers on the web laying device are adsorbed on the web laying device and arranged and stacked on the web laying device. After the arrangement and stacking form a fiber accumulation layer of a preset thickness, it moves forward on the web laying device and is output, thereby obtaining the required sound-absorbing cotton material.

[0048] In the production device of the sound-absorbing cotton material of the present application, since a quantitative powder spreading device is provided above the fiber conveyor, the hot melt adhesive powder can be evenly sprinkled on the short fibers in the single fiber state in the fiber conveyor. The hot melt adhesive powder will also melt under the action of the hot air flow, thereby greatly enhancing the bonding force between the short fibers and the melt-blown fibers, so that the short fibers and the melt-blown fibers can be better bonded together, thereby greatly improving the fiber bonding force inside the material and better improving the internal cohesion level of the overall structure of the sound-absorbing material. For example, the internal cohesion of the sound-absorbing material produced by the production device of the sound-absorbing cotton material of the present application can be increased to 80 to 100 N / 100 m 2 .

[0049] In addition, in the technical solution of the present application, the production device of the above-mentioned sound-absorbing cotton material can be realized in a variety of ways. The following will take some specific implementation methods as examples to introduce the technical solution of the present application in detail.

[0050] For example, as an example, Figure 1 to Figure 3 As shown, in a preferred specific embodiment of the present utility model, the quantitative powder spreading device 15 may include: a material barrel 51, an anilox roller 52 and a metering scraper 53;

[0051] The material barrel 51 is provided with a material cavity; the bottom of the material cavity is provided with a discharge port;

[0052] The anilox roller 52 is rotatably disposed at the discharge port; a plurality of concave points 521 are disposed on the outer wall of the anilox roller 52;

[0053] The metering scraper 52 is disposed on one side of the rotation direction of the anilox roller 52 and abuts against the outer wall of the anilox roller 52 .

[0054] In the quantitative powder spreading device, hot melt adhesive powder can be placed in the material cavity of the material barrel. When the anilox roller at the discharge port at the bottom of the material cavity rotates, the granular hot melt adhesive powder at the bottom of the material cavity will be embedded in the concave points of the outer wall of the anilox roller; the anilox roller continues to rotate, and when passing through the metering scraper, the metering scraper will scrape the surface of the outer wall of the anilox roller flat, leaving only the hot melt adhesive powder particles embedded in the concave points; when the anilox roller continues to rotate, after passing the metering scraper, the hot melt adhesive powder particles embedded in the concave points will automatically fall due to gravity, and thus be scattered on the short fibers in a single fiber state in the fiber conveyor located below the quantitative powder spreading device. Therefore, by controlling the rotation speed of the anilox roller, the amount of hot melt adhesive powder scattered on the short fibers can be controlled, so that not only can the hot melt adhesive powder be evenly sprinkled on the short fibers, but also the amount of hot melt adhesive powder scattered on the short fibers can be accurately controlled.

[0055] In addition, as an example, in a preferred specific embodiment of the present utility model, the fiber mixing device 16 may include: a blower 61 and an air duct 62;

[0056] The blower 61 is used to output wind to the input end of the air duct 62;

[0057] The output end of the air duct 62 is arranged below one side of the output end of the fiber conveyor 13 .

[0058] The hair dryer can generate a high-speed airflow, thereby generating a negative pressure blowing force at the output end of the air duct, so that the short fibers in a single-fiber state in the fiber conveyor can be blown to the output end of the fiber conveyor.

[0059] In addition, as an example, in a preferred specific embodiment of the present invention, the polymer melt may be a polypropylene (PP) fiber melt, or may be other suitable polymer melts.

[0060] In addition, as an example, in a preferred specific embodiment of the present invention, the short fiber can be a core-sheath fiber. The core-sheath fiber is a fiber made of two slices with different melting points using a composite spinning method. The outer layer of the core-sheath fiber is a low melting point material (usually a melting point of 100-120°C), while the inner layer material is a material with a higher melting point (about 250°C).

[0061] Since the melting point of the core-sheath fiber is relatively low, the outer layer of the core-sheath fiber will melt under the action of the hot air flow output from the outlet hole of the spinning box (the temperature of the hot air flow is generally about 250°C, and the temperature of the mixed contact area of ​​the core-sheath fiber and the melt-blown fiber is 160-180°C), so when mixed with the melt-blown fiber, the core-sheath fiber will have a strong bonding force with the melt-blown fiber. In addition, since the core-sheath fiber is evenly sprinkled with hot melt adhesive powder, the hot melt adhesive powder will also melt under the action of the hot air flow, so the bonding force between the short fiber and the melt-blown fiber can be further enhanced, so that the short fiber and the melt-blown fiber can be better bonded together to form a mixed fiber, thereby greatly improving the fiber bonding force inside the material and better improving the internal cohesion level of the overall structure of the sound-absorbing material.

[0062] In addition, as an example, in a preferred specific embodiment of the present utility model, the cotton web processor 14 may include: a cotton feeding roller 41 and a licker-in roller 42;

[0063] The cotton feeding roller 41 is used to hold the received cotton web;

[0064] The licker-in roller 42 is used to open the cotton web into short fibers in a single fiber state and output them.

[0065] Therefore, the cotton web processor can be used to process the cotton web to obtain short fibers in a single fiber state, and the short fibers in a single fiber state are transported to the input end of the fiber conveyor.

[0066] In addition, as an example, in a preferred specific embodiment of the present utility model, the web laying device 12 may include: a conveyor web belt 21 and a suction box 22;

[0067] The top of the air suction box 22 is provided with an air suction port; the bottom of the air suction box 22 is provided with an air outlet;

[0068] The conveyor mesh belt 21 is arranged on the upper part of the air suction port of the air suction box 22 and can move along a preset direction.

[0069] Therefore, through the above-mentioned laying device, the mixed fibers can be adsorbed on the conveyor mesh belt, arranged and stacked to form a thicker fiber accumulation layer, and then moved forward and output, thereby obtaining the required sound-absorbing cotton material.

[0070] In addition, as an example, in a preferred specific embodiment of the present utility model, the production device of the sound-absorbing cotton material may further include: a cotton net conveyor 17;

[0071] The cotton web conveyor 17 is used to convey the cotton web 10 to the cotton web processor 14 for processing.

[0072] In addition, as an example, in a preferred specific embodiment of the present invention, the cotton web can be a cotton web that has been combed and processed by a preceding device.

[0073] In addition, as an example, in a preferred specific embodiment of the present utility model, the production device of the sound-absorbing cotton material may further include: a pressurizing device;

[0074] The pressurizing device is arranged above the accommodating chamber of the spinning manifold, and is used to output pressure to the accommodating chamber, so that the polymer melt in the accommodating chamber can flow out from the spinneret hole under the action of pressure.

[0075] In addition, as an example, in a preferred specific embodiment of the present invention, the pressurizing device may be a screw extruder, or other suitable pressurizing devices, which are not listed here one by one.

[0076] In addition, as an example, in a preferred specific embodiment of the present utility model, the production device of the sound-absorbing cotton material may further include: a ventilation and heating device;

[0077] The ventilation and heating device is arranged above the air ducts on both sides of the accommodating cavity, and is used to output hot air flow to the top of the air duct.

[0078] To sum up, in the technical solution of the utility model, since a quantitative powder sprinkling device is provided above the fiber conveyor, the hot melt adhesive powder can be evenly sprinkled on the short fibers in a single fiber state in the fiber conveyor, and the hot melt adhesive powder will also melt under the action of the hot air flow, thereby greatly enhancing the bonding force between the short fibers and the meltblown fibers, so that the short fibers and the meltblown fibers can be better bonded together, thereby greatly improving the fiber bonding force inside the material, and better improving the internal cohesion level of the overall structure of the sound-absorbing material.

[0079] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A production device for sound-absorbing cotton material, characterized in that: The production device includes: a spinning box, a web laying device, a fiber conveyor, a cotton web processor, a quantitative powder spreading device and a fiber mixing device; The middle part of the spinning manifold is provided with a receiving cavity; the bottom of the spinning manifold is provided with a wire outlet hole; the bottom of the receiving cavity is provided with a spinneret hole connected with the wire outlet hole; both sides of the receiving cavity are provided with air ducts connected with the wire outlet hole; The web laying device is arranged directly below the outlet hole of the spinning box; The fiber conveyor is arranged on one side of the outlet hole of the spinning box; The output end of the cotton web processor is connected to the input end of the fiber conveyor; the cotton web processor is used to process the cotton web to obtain short fibers in a single fiber state, and convey the short fibers in a single fiber state to the input end of the fiber conveyor; The quantitative powder spreading device is arranged above the fiber conveyor and is used to evenly spread the hot melt adhesive powder on the short fibers in a single fiber state in the fiber conveyor; The fiber mixing device is arranged below one side of the output end of the fiber conveyor; the fiber mixing device is used to generate negative pressure blowing force, so that the short fibers in the single fiber state in the fiber conveyor move toward the output end of the fiber conveyor.

2. The production device according to claim 1, characterized in that: The quantitative powder spreading device comprises: a material barrel, an anilox roller and a metering scraper: A material cavity is provided in the material barrel; a discharge port is provided at the bottom of the material cavity; The anilox roller is rotatably arranged at the discharge port; a plurality of concave points are arranged on the outer wall of the anilox roller; The metering scraper is arranged on one side of the rotation direction of the anilox roller and abuts against the outer wall of the anilox roller.

3. The production device according to claim 1, characterized in that: The fiber mixing device comprises: a blower and an air duct: The blower is used to output wind force to the input end of the air duct; The output end of the air duct is arranged below one side of the output end of the fiber conveyor.

4. The production device according to claim 1, characterized in that: The cotton web processor comprises: a cotton feeding roller and a licker-in roller: The cotton feeding roller is used to hold the received cotton web; The licker-in roller is used to open the cotton web into short fibers in a single fiber state and output them.

5. The production device according to claim 1, characterized in that: The web laying device comprises: a conveyor web belt and an air suction box; The top of the air suction box is provided with an air suction port; the bottom of the air suction box is provided with an air outlet; The conveyor mesh belt is arranged on the upper part of the air suction port of the air suction box body and can move along a preset direction.

6. The production device according to claim 1, characterized in that: The production device further comprises: a pressurizing device; The pressurizing device is arranged above the accommodating chamber of the spinning manifold, and is used for outputting pressure to the accommodating chamber.

7. The production device according to claim 6, characterized in that: The pressurizing device is a screw extruder.

8. The production device according to claim 1, characterized in that: The production device further comprises: a ventilation and heating device; The ventilation and heating device is arranged above the air ducts on both sides of the accommodating cavity, and is used to output hot air flow to the top of the air duct.

9. The production device according to claim 1, characterized in that: The short fibers are sheath-core fibers.

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