Hydrophobic multilayer nonwoven fabric and process for processing the same

Abstract

The application relates to the technical field of automobile interior processing, in particular to a hydrophobic multilayer non-woven fabric and a processing technology thereof, which comprises a cloth part and a mounting part; the cloth part is a hydrophobic non-woven fabric and aerogel filler; the mounting part comprises two first mounting plates, each of which is provided with a fixing mechanism through a sliding adjusting mechanism; the fixing mechanism comprises a U-shaped block which is composed of an upper connecting plate, a vertical connecting plate and a lower connecting plate; the hydrophobic non-woven fabric is arranged between the upper connecting plate and the lower connecting plate; the aerogel filler is arranged between two adjacent hydrophobic non-woven fabrics; a fixing needle is slidably connected to the upper connecting plate; the fixing mechanism further comprises a limiting assembly which is arranged on the lower connecting plate. The application has the advantages that the hydrophobic non-woven fabric can be better fixed in the automobile interior, the installation of the hydrophobic non-woven fabric in the automobile interior is facilitated, the fixing needle can be used for fixing the hydrophobic non-woven fabric, and the damaged hydrophobic non-woven fabric can be conveniently replaced.

Description

Technical Field

[0001] This invention relates to the technical field of automotive interior processing, and in particular to a hydrophobic multilayer nonwoven fabric and its processing technology. Background Technology

[0002] With the advancement of technology, people have increasingly higher requirements for car interiors, seeking not only aesthetics but also safety and functionality. As a result, non-woven fabrics are widely used in the automotive interior field in the current technology.

[0003] Nonwoven fabric, also known as non-woven textile, does not require spinning, winding, or weaving processes compared to traditional textile fabrics. Instead, it is made by randomly arranging oriented or random fibers or filaments to form a web structure, which is then processed through meltblowing, needle punching, or other mechanical and chemical methods. Nonwoven fabric processing is simpler and more efficient, with advantages such as shorter process flow, faster production rate, higher output, lower cost, wider applications, and more abundant raw material sources.

[0004] To improve moisture resistance, some cars use multiple layers of hydrophobic nonwoven fabric with gaps between them. However, in current technology, most hydrophobic nonwoven fabrics in car interiors are installed using chemical adhesives, which releases a lot of formaldehyde. Furthermore, when multiple layers are laid, it is impossible to ensure that the gaps between the layers are consistent. Summary of the Invention

[0005] In order to reduce formaldehyde release and maintain consistency in the gaps between multiple layers of hydrophobic nonwoven fabric, this application provides a hydrophobic multilayer nonwoven fabric.

[0006] In the first aspect, this application provides a hydrophobic multilayer nonwoven fabric, which adopts the following technical solution: A hydrophobic multilayer nonwoven fabric includes a fabric portion and an installation portion. The fabric portion consists of a hydrophobic nonwoven fabric and an aerogel filler. The installation portion includes two first mounting plates, each with a fixing mechanism mounted on it via a sliding adjustment mechanism. Each fixing mechanism includes a U-shaped block, which is composed of an upper connecting plate, a vertical connecting plate, and a lower connecting plate. The hydrophobic nonwoven fabric is placed between the upper and lower connecting plates, and the aerogel filler is located between two adjacent hydrophobic nonwoven fabrics. A fixing pin is slidably connected to the upper connecting plate. The fixing mechanism also includes a limiting component mounted on the lower connecting plate.

[0007] By adopting the above technical solution, multiple U-shaped blocks can be installed on the first mounting plate through a sliding adjustment mechanism, thereby realizing the installation of multiple layers of hydrophobic nonwoven fabric, achieving better moisture-proof effect for automotive interiors, and also making it easier to install hydrophobic nonwoven fabric in the vehicle. Furthermore, aerogel filler is filled between adjacent hydrophobic nonwoven fabrics to support them. At the same time, the setting of fixing pins enables the fixing of the hydrophobic nonwoven fabric, and also facilitates the replacement of damaged hydrophobic nonwoven fabric. Moreover, this application does not use chemical adhesives, reducing the release of formaldehyde.

[0008] Optionally, the lower connecting plate has a slot on its end face near the upper connecting plate, and a second sliding groove communicating with the slot is formed on its end face away from the vertical connecting plate. A third sliding groove is formed on the side wall of the second sliding groove. A limiting groove is formed on the side wall of the fixing pin. One end of the fixing pin away from the upper connecting plate is inserted into the slot. The limiting component includes a first limiting rod, which is slidably connected in the second sliding groove, and one end of the first limiting rod passing through the second sliding groove is inserted into the slot. A second slider is slidably connected in the third sliding groove, and the second slider is fixedly connected to the first limiting rod. A spring is fixedly connected to the side wall of the third sliding groove away from the fixing pin, and one end of the spring near the fixing pin is fixedly connected to the second slider.

[0009] By adopting the above technical solution, when fixing the hydrophobic nonwoven fabric, firstly, manually pull the first limiting rod. The first limiting rod slides out of the slot and compresses the spring through the second slider. Then, manually press the fixing pin. The fixing pin pierces the hydrophobic nonwoven fabric and inserts into the slot. At this time, release the first limiting rod. The spring drives the first limiting rod to insert into the limiting groove through the second slider, thus limiting the fixing pin.

[0010] Optionally, a fourth sliding groove is provided on the end face of the vertical connecting plate near the fixing pin, and a clamping mechanism is installed on the vertical connecting plate. The clamping mechanism includes an upper clamping plate and a lower clamping plate. The upper clamping plate is slidably connected in the fourth sliding groove, and the lower clamping plate is fixedly connected to the lower connecting plate.

[0011] By adopting the above technical solution, because the diameter of the fixing needle is small, when the hydrophobic nonwoven fabric is tensioned, the edge of the hydrophobic nonwoven fabric will be cut open by the fixing needle under the action of tension, thus affecting the tension of the hydrophobic nonwoven fabric. The upper and lower clamps clamp the edge of the hydrophobic nonwoven fabric. When the hydrophobic nonwoven fabric is tensioned, the edge of the hydrophobic nonwoven fabric is clamped by the upper and lower clamps first, thereby reducing the probability that the edge of the hydrophobic nonwoven fabric will be cut open by the fixing needle under the action of tension, thus affecting the tension of the hydrophobic nonwoven fabric.

[0012] Optionally, the upper clamping plate has multiple arc-shaped grooves on its end face near the lower clamping plate, and multiple protrusions are fixedly connected to the end face of the lower clamping plate near the upper clamping plate. The protrusions are symmetrically arranged with the arc-shaped grooves and are mutually adapted to each other.

[0013] By adopting the above technical solution, when clamping the hydrophobic nonwoven fabric, the protrusion clamps the hydrophobic nonwoven fabric in the arc groove, thereby increasing the contact area between the hydrophobic nonwoven fabric and the upper and lower clamping plates, improving the friction between the hydrophobic nonwoven fabric and the upper and lower clamping plates, and further reducing the probability of accidental slippage of the hydrophobic nonwoven fabric when tensioning.

[0014] Optionally, a transmission mechanism is installed on the fixing pin. The transmission mechanism includes a connecting rod, which is fixedly connected to the fixing pin. A drive rack is fixedly connected to the connecting rod. An installation groove is formed on the end face of the upper connecting plate away from the lower connecting plate. A first rotating shaft is rotatably connected in the installation groove. A drive gear is fixedly connected to the first rotating shaft and meshes with the drive rack. A steering gear is also rotatably connected in the installation groove through an installation assembly. The steering gear meshes with the drive gear. A driven rack is slidably connected in the installation groove. The driven rack is connected to the upper clamping plate through an adjustment assembly and meshes with the steering gear.

[0015] By adopting the above technical solution, when fixing the hydrophobic nonwoven fabric, manually pressing the fixing pin causes the fixing pin to move the connecting rod, which in turn causes the drive rack to slide. The drive rack then causes the drive gear to rotate, which in turn causes the steering gear to rotate. The steering gear then causes the driven rack to slide, which in turn causes the upper clamping plate to move closer to the lower clamping plate, thus clamping the hydrophobic nonwoven fabric. This achieves both fixing and clamping of the hydrophobic nonwoven fabric, simplifying the operation process.

[0016] Optionally, a fifth sliding groove is formed on the sidewalls of both sides of the mounting groove, and a sixth sliding groove is formed on the bottom wall of the fifth sliding groove. A right-angle groove communicating with the two fifth sliding grooves and the two sixth sliding grooves is formed on the sidewalls of both sides of the upper connecting plate. The mounting assembly includes two fixing blocks, which are slidably connected to the two sixth sliding grooves through the two fifth sliding grooves respectively. A second rotating shaft is rotatably connected to both fixing blocks, and the second rotating shaft is fixedly connected to the steering gear. A connecting shaft is fixedly connected to the end faces of the two fixing blocks that are far apart from each other. The connecting shaft is slidably connected in the right-angle groove, and a second limiting rod is slidably connected to the connecting shaft. A first limiting rack is also fixedly connected to the sidewalls of both sides of the upper connecting plate, and one end of the second limiting rod passing through the connecting shaft is inserted into the tooth gap of the first limiting rack.

[0017] By adopting the above technical solution, since the thickness of the hydrophobic nonwoven fabric to be clamped is different, the stroke of the upper clamping plate is also different. Therefore, it is necessary to replace the steering gear with a different size. At the same time, since the size of the steering gear is different, it is also necessary to adjust the distance between the steering gear and the drive gear. When replacing the steering gear, first slide the fixing block through the fifth slide groove to the sixth slide groove, and then slide the fixing block to make the drive gear mesh with the steering gear. At this time, the second limiting rod passes through the connecting shaft and is locked in the tooth gap of the first limiting rack.

[0018] Optionally, a groove is formed along the length direction on the end face of the upper clamping plate away from the lower clamping plate. The adjusting component includes an insert block, which is fixedly connected to the end face of the driven rack near the upper clamping plate. A limiting tooth block is fixedly connected to the side wall of the insert block, and a second limiting rack is fixedly connected to the side wall of the groove. The limiting tooth block is engaged in the tooth gap of the second limiting rack.

[0019] By adopting the above technical solution, when different steering gears are replaced, the distance between the steering gear and the driven rack also changes. Therefore, it is necessary to adjust the position of the driven rack. When adjusting the position of the driven rack, first pull the driven rack so that the limiting block slides out of the tooth gap of the second limiting rack. Then slide the driven rack so that the driven rack meshes with the steering gear. Then press down the driven rack so that the limiting block continues to be engaged in the tooth gap of the second limiting rack.

[0020] Optionally, a first sliding groove is provided on the end faces of the two first mounting plates that are close to each other. The sliding adjustment mechanism includes a first slider, which is slidably connected in the first sliding groove. The first slider is fixedly connected to the vertical connecting plate. A rubber block is fixedly connected to the end of the first slider away from the vertical connecting plate. Multiple screw holes are provided on the side wall of the first mounting plate away from the fixing pin. An adjusting bolt is threaded into the screw hole. A pin is fixedly connected to the end of the adjusting bolt near the vertical connecting plate. The end of the pin away from the adjusting bolt is inserted into the rubber block.

[0021] By adopting the above technical solution, the first slider, rubber block, adjusting bolt and ejector pin are set to fix the hydrophobic nonwoven fabric, while also facilitating the adjustment of the distance between adjacent hydrophobic nonwoven fabrics, and ensuring that the gaps between multiple layers of hydrophobic nonwoven fabrics remain consistent.

[0022] Secondly, this application provides a hydrophobic multilayer nonwoven fabric processing technology, which adopts the following technical solution: A hydrophobic multilayer nonwoven fabric processing technology includes the following steps: Step 1: Cut the hydrophobic nonwoven fabric according to the size of the fabric to be used to cover the car interior; Step 2: Measure the laying thickness according to the required number of layers, then replace the steering gear with the appropriate size according to the laying thickness, and adjust the driven rack to mesh with the steering gear; Step 3: Place the hydrophobic nonwoven fabric into the U-shaped block, pull the first limiting rod, and then press the fixing needle to make the fixing needle pierce through the hydrophobic nonwoven fabric and insert into the slot. Then release the first limiting rod so that the first limiting rod is inserted into the limiting groove to limit the fixing needle. When the fixing needle is pressed, the transmission mechanism drives the upper clamping plate and the lower clamping plate to clamp the hydrophobic nonwoven fabric. Step 4: Install multiple U-shaped blocks on the first mounting plate according to the car's moisture-proof requirements, and slide the first slider according to the moisture-proof requirements so that the distance between two adjacent hydrophobic non-woven fabrics meets the requirements. Then rotate the adjusting bolt to fix the hydrophobic non-woven fabric. Step 5: Weld the two first mounting plates to the location where the hydrophobic nonwoven fabric needs to be laid on the car, so that the hydrophobic nonwoven fabric is taut, and the installation is completed.

[0023] In summary, this application includes the following beneficial technical effects: 1. Multiple U-shaped blocks can be installed on the first mounting plate through a sliding adjustment mechanism, thereby enabling the installation of multiple layers of hydrophobic nonwoven fabric, achieving better moisture-proof effect for automotive interiors, and also making it easier to install hydrophobic nonwoven fabric in the vehicle; at the same time, the setting of fixing pins enables the fixing of hydrophobic nonwoven fabric, and also facilitates the replacement of damaged hydrophobic nonwoven fabric, and this application does not use chemical adhesives, reducing the release of formaldehyde. 2. Because the diameter of the fixing needle is small, when tensioning the hydrophobic nonwoven fabric, the edge of the fabric will be cut open by the fixing needle under the action of tension, thus affecting the tension of the hydrophobic nonwoven fabric. The upper and lower clamps clamp the edge of the hydrophobic nonwoven fabric. When tensioning the hydrophobic nonwoven fabric, the edge of the fabric is clamped by the upper and lower clamps, thus reducing the probability that the edge of the hydrophobic nonwoven fabric will be cut open by the fixing needle under the action of tension, thus affecting the tension of the hydrophobic nonwoven fabric. 3. When clamping the hydrophobic nonwoven fabric, the protrusion clamps the hydrophobic nonwoven fabric in the arc groove, thereby increasing the contact area between the hydrophobic nonwoven fabric and the upper and lower clamping plates, increasing the friction between the hydrophobic nonwoven fabric and the upper and lower clamping plates, and further reducing the probability of accidental slippage of the hydrophobic nonwoven fabric when tensioning. 4. When fixing the hydrophobic nonwoven fabric, manually press the fixing pin. At this time, the fixing pin drives the connecting rod to move, the connecting rod drives the drive rack to slide, the drive rack drives the drive gear to rotate, the drive gear drives the steering gear to rotate, the steering gear drives the driven rack to slide, and the driven rack drives the upper clamping plate to move closer to the lower clamping plate, thus clamping the hydrophobic nonwoven fabric. In this way, the hydrophobic nonwoven fabric is fixed and clamped at the same time, simplifying the operation process. Attached Figure Description

[0024] Figure 1 This is a distribution diagram of the hydrophobic multilayer nonwoven fabric in the automobile according to the embodiments of this application; Figure 2 This is a schematic diagram of the structure of the hydrophobic multilayer nonwoven fabric in the embodiments of this application; Figure 3 This is a cross-sectional view of the limiting component in an embodiment of this application; Figure 4 This is a schematic diagram of the sliding adjustment mechanism in the embodiments of this application; Figure 5 For this application Figure 3 Enlarged view of section A; Figure 6 This is a schematic diagram of the transmission mechanism in an embodiment of this application; Figure 7 This is a schematic diagram of the installation components in an embodiment of this application; Figure 8 This is a schematic diagram of the structure of the adjustment component in the embodiments of this application.

[0025] Reference numerals: 1. Hydrophobic nonwoven fabric; 2. First mounting plate; 21. First slide groove; 22. Screw hole; 3. Sliding adjustment mechanism; 31. First slider; 32. Rubber block; 33. Adjusting bolt; 34. Ejector pin; 4. Fixing mechanism; 41. U-shaped block; 411. Upper connecting plate; 412. Vertical connecting plate; 413. Lower connecting plate; 42. Fixing pin; 421. Limiting groove; 43. Limiting assembly; 431. First limiting rod; 432. Second slider; 433. Spring; 441. Slot; 442. Second slide groove; 443. Third slide groove; 444. Fourth slide groove; 445. Mounting groove; 446. Fifth slide groove; 447. Sixth sliding groove; 448, right-angle groove; 5, clamping mechanism; 51, upper clamping plate; 511, arc-shaped groove; 512, groove; 52, lower clamping plate; 53, protrusion; 6, transmission mechanism; 61, connecting rod; 62, drive rack; 63, first rotating shaft; 64, drive gear; 65, steering gear; 66, driven rack; 67, mounting assembly; 671, fixing block; 672, second rotating shaft; 673, connecting shaft; 674, second limiting rod; 675, first limiting rack; 676, second through hole; 68, adjusting assembly; 681, insert block; 682, limiting tooth block; 683, second limiting rack; 7, aerogel filler. Detailed Implementation

[0026] The following is in conjunction with the appendix Figures 1-7 This application will be described in further detail.

[0027] This application discloses a hydrophobic multilayer nonwoven fabric.

[0028] refer to Figure 1 and Figure 2 The hydrophobic multilayer nonwoven fabric includes a fabric part and an installation part. The fabric part consists of a hydrophobic nonwoven fabric 1 and an aerogel filler 7. The installation part includes two first mounting plates 2. Each of the two first mounting plates 2 is equipped with multiple fixing mechanisms 4 for fixing the hydrophobic nonwoven fabric 1 via a sliding adjustment mechanism 3. The fixing mechanism 4 is equipped with a clamping mechanism 5 for clamping the hydrophobic nonwoven fabric 1.

[0029] Multiple fixing mechanisms 4 are installed on the two first mounting plates 2 via sliding adjustment mechanisms 3. The two symmetrically arranged fixing mechanisms 4 jointly fix a layer of hydrophobic nonwoven fabric 1, thereby realizing the installation of multiple layers of hydrophobic nonwoven fabric 1, achieving better moisture-proof effect for automotive interiors. Furthermore, aerogel filler 7 is filled between adjacent hydrophobic nonwoven fabrics 1 to support them. At the same time, the two first mounting plates 2 can tension the hydrophobic nonwoven fabric 1. The installation of the hydrophobic nonwoven fabric 1 is achieved through the installation of the first mounting plates 2 in the vehicle, making it easier to install the hydrophobic nonwoven fabric 1 in the vehicle. Moreover, this application does not use chemical adhesives, reducing the release of formaldehyde.

[0030] refer to Figure 2 and Figure 3 The fixing mechanism 4 includes a U-shaped block 41, which is composed of an upper connecting plate 411, a vertical connecting plate 412, and a lower connecting plate 413. The vertical connecting plate 412 is connected to the sliding adjustment mechanism 3. The hydrophobic nonwoven fabric 1 is located between the upper connecting plate 411 and the lower connecting plate 413, and the aerogel filler 7 is located between two adjacent hydrophobic nonwoven fabrics 1. The upper connecting plate 411 has a first through hole at the end away from the lower connecting plate 413, and a fixing pin 42 is slidably connected in the first through hole. The lower connecting plate 413 has a slot 441 on the end face near the upper connecting plate 411, and a second sliding groove 442 communicating with the slot 441 on the end face away from the vertical connecting plate 412. A third sliding groove 443 is provided on the side wall of the fixing pin 42, and a limiting groove 421 is provided on the side wall of the fixing pin 42. The end of the fixing pin 42 away from the upper connecting plate 411 is inserted into the slot 441. The fixing mechanism 4 also includes a limiting component 43, which includes a first limiting rod 431. The first limiting rod 431 is inserted into the first sliding groove 21 and the end of the first limiting groove 21 is located in the slot 441. A second slider 432 is slidably connected in the third sliding groove 443. The second slider 432 is fixedly connected to the first limiting rod 431. A spring 433 is fixedly connected on the side wall of the third sliding groove 443 away from the first mounting plate 2. The end of the spring 433 near the first mounting plate 2 is fixedly connected to the second slider 432.

[0031] When fixing the hydrophobic nonwoven fabric 1, first manually pull the first limiting rod 431. The first limiting rod 431 slides out of the slot 441 and compresses the spring 433 through the second slider 432. Then manually press the fixing needle 42. The fixing needle 42 pierces the hydrophobic nonwoven fabric 1 and inserts into the slot 441. At this time, release the first limiting rod 431. The spring 433 drives the first limiting rod 431 to insert into the limiting groove 421 through the second slider 432, thus limiting the fixing needle 42.

[0032] refer to Figure 4 Two first mounting plates 2 are provided with first sliding grooves 21 along their length on their end faces that are close to each other. The sliding adjustment component 68 includes a first slider 31, which is slidably connected in the first sliding groove 21 and fixedly connected to the vertical connecting plate 412. A rubber block 32 is fixedly connected to the end of the first slider 31 away from the vertical connecting plate 417. Multiple screw holes 22 are provided on the end face of the first mounting plate 2 away from the vertical connecting plate 417. The multiple screw holes 22 are all connected to the first sliding groove 21. An adjusting bolt 33 is threaded into the screw hole 22. A pin 34 is fixedly connected to the end of the adjusting bolt 33 near the first slider 31. The pin 34 pierces into the rubber pad.

[0033] The arrangement of the first slider 31, rubber block 32, adjusting bolt 33 and ejector pin 34 achieves the fixation of the hydrophobic nonwoven fabric 1, and also facilitates the adjustment of the distance between adjacent hydrophobic nonwoven fabrics 1, and can keep the gap between multiple layers of hydrophobic nonwoven fabrics 1 consistent.

[0034] refer to Figure 5 A fourth sliding groove 444 is provided along the length direction on the end face of the vertical connecting plate 412 near the fixed pin 42. The clamping mechanism 5 includes an upper clamping plate 51, which is slidably connected in the fourth sliding groove 444. A lower clamping plate 52 is fixedly connected to the end face of the lower connecting plate 413 near the upper connecting plate 411. A plurality of arc-shaped grooves 511 are provided on the end face of the upper clamping plate 51 near the lower clamping plate 52. A protrusion 53 is fixedly connected to the end face of the lower clamping plate 52 near the upper clamping plate 51. The protrusion 53 and the arc-shaped grooves 511 are mutually adapted.

[0035] Because the diameter of the fixing needle 42 is small, when tensioning the hydrophobic nonwoven fabric 1, the edge of the hydrophobic nonwoven fabric 1 will be cut open by the fixing needle 42 under the action of tension, thus affecting the tension of the hydrophobic nonwoven fabric 1. The upper clamping plate 51 and the lower clamping plate 52 achieve clamping of the edge of the hydrophobic nonwoven fabric 1. When tensioning the hydrophobic nonwoven fabric 1, the upper clamping plate 51 and the lower clamping plate 52 clamp the edge of the hydrophobic nonwoven fabric 1, thereby reducing the tension of the hydrophobic nonwoven fabric. The edge of the nonwoven fabric 1 is cut open by the fixing needle 42 under the action of tension, which affects the probability of tensioning of the nonwoven fabric 1. At the same time, when clamping, the protrusion 53 clamps the nonwoven fabric 1 in the arc groove 511, which increases the contact area between the nonwoven fabric 1 and the upper clamping plate 51 and the lower clamping plate 52, and increases the friction between the nonwoven fabric 1 and the upper clamping plate 51 and the lower clamping plate 52, further reducing the probability of accidental slippage of the nonwoven fabric 1 when tensioning.

[0036] refer to Figure 6 An installation groove 445 is provided along the length direction on the end face of the upper connecting plate 411 away from the lower connecting plate 413. A transmission mechanism 6 is installed on the fixing pin 42. The transmission mechanism 6 includes a connecting rod 61, which is fixedly connected to the side wall of the fixing pin 42. A drive rack 62 is fixedly connected to the end of the connecting rod 61 away from the fixing pin 42. A first rotating shaft 63 is rotatably connected to the side walls on both sides of the installation groove 445. A drive gear 64 is fixedly connected to the first rotating shaft 63. The drive gear 64 meshes with the drive rack 62. A steering gear 65 is also rotatably connected to the installation groove 445 through an installation assembly 67. The steering gear 65 meshes with the drive gear 64. A driven rack 66 is installed on the end face of the upper clamping plate 51 away from the lower clamping plate 52 through an adjustment assembly 68. The driven rack 66 meshes with the steering gear 65.

[0037] When fixing the hydrophobic nonwoven fabric 1, manually press the fixing pin 42. At this time, the fixing pin 42 drives the connecting rod 61 to move, the connecting rod 61 drives the drive rack 62 to slide, the drive rack 62 drives the drive gear 64 to rotate, the drive gear 64 drives the steering gear 65 to rotate, the steering gear 65 drives the driven rack 66 to slide, and the driven rack 66 drives the upper clamping plate 51 to move closer to the lower clamping plate 52, clamping the hydrophobic nonwoven fabric 1. Thus, the nonwoven fabric is clamped while fixing the hydrophobic nonwoven fabric 1, simplifying the operation process.

[0038] refer to Figure 7 The mounting slot 445 has a fifth sliding groove 446 on each side wall, and a sixth sliding groove 447 on the bottom wall of the fifth sliding groove 446. The upper connecting plate 411 has right-angle grooves 448 on each side wall, which communicate with the two fifth sliding grooves 446 and the two sixth sliding grooves 447. The mounting assembly 67 includes two fixing blocks 671, which are slidably connected to the two sixth sliding grooves 447 through the two fifth sliding grooves 446 respectively. The ends of the two fixing blocks 671 that are close to each other are rotatably connected to a second rotating shaft 67. 2. The second rotating shaft 672 is fixedly connected to the steering gear 65; a connecting shaft 673 is slidably connected in each of the two right-angle slots 448, and the two connecting shafts 673 are fixedly connected to the two fixing blocks 671 respectively. A second through hole 676 is provided on the side wall of the connecting shaft 673, and a second limiting rod 674 is slidably connected in the second through hole 676. A first limiting rack 675 is fixedly connected to the side walls on both sides of the upper connecting plate 411, and the second limiting rod 674 passes through the second through hole 676 and is inserted into the tooth gap of the first limiting rack 675.

[0039] Because the thickness of the hydrophobic nonwoven fabric 1 to be clamped is different, the stroke of the upper clamping plate 51 is also different. Therefore, it is necessary to replace the steering gear 65 with one of different sizes. At the same time, because the size of the steering gear 65 is different, it is also necessary to adjust the distance between the steering gear 65 and the drive gear 64. When replacing the steering gear 65, first slide the fixing block 671 through the fifth slide groove 446 to the sixth slide groove 447, and then slide the fixing block 671 to make the drive gear 64 mesh with the steering gear 65. At this time, the second limiting rod 674 is passed through the second through hole 676 and engaged in the tooth gap of the first limiting rack 675.

[0040] refer to Figure 8 A groove 512 is provided along the length direction on the end face of the upper clamping plate 51 away from the lower clamping plate 52. The adjusting component 68 includes a plug 681, which is fixedly connected to the end face of the driven rack 66 near the upper clamping plate 51. A limiting tooth block 682 is fixedly connected to the side wall of the plug 681. A second limiting rack 683 is fixedly connected to the side wall of the groove 512. The limiting tooth block 682 is engaged in the tooth gap of the second limiting rack 683.

[0041] When different steering gears 65 are replaced, the distance between the steering gear 65 and the driven rack 66 also changes. Therefore, it is necessary to adjust the position of the driven rack 66. When adjusting the position of the driven rack 66, first pull the driven rack 66 so that the limiting block 682 slides out of the tooth gap of the second limiting rack 683. Then slide the driven rack 66 so that the driven rack 66 meshes with the steering gear 65. Then press down the driven rack 66 so that the limiting block 682 continues to engage in the tooth gap of the second limiting rack 683.

[0042] The implementation principle of a hydrophobic multilayer nonwoven fabric in this application embodiment is as follows: the hydrophobic nonwoven fabric 1 is fixed by setting up U-shaped block 41 and fixing pin 42, which facilitates the tensioning of hydrophobic nonwoven fabric 1 and the replacement of damaged hydrophobic nonwoven fabric 1. At the same time, the U-shaped block 41 is slidably connected to the first mounting plate 2, so that the multilayer hydrophobic nonwoven fabric 1 can be installed through the first mounting plate 2, and the distance between the multilayer hydrophobic nonwoven fabric 1 can be adjusted.

[0043] This application also discloses a process for processing hydrophobic multilayer nonwoven fabrics.

[0044] A hydrophobic multilayer nonwoven fabric processing technology includes the following steps: Step 1: Cut the hydrophobic nonwoven fabric 1 according to the size of the hydrophobic nonwoven fabric 1 that needs to be used to cover the inside of the car; Step 2: Measure the laying thickness according to the required number of laying layers, then replace the steering gear 65 with the corresponding size according to the laying thickness, and adjust the driven rack 66 to mesh with the steering gear 65. Step 3: Place the hydrophobic nonwoven fabric 1 into the U-shaped block 41, pull the first limiting rod 431, and then press the fixing needle 42 so that the fixing needle 42 pierces through the hydrophobic nonwoven fabric 1 and inserts into the slot 441. Then release the first limiting rod 431 so that the first limiting rod 431 is inserted into the limiting groove 421 to limit the fixing needle 42. When the fixing needle 42 is pressed, the transmission mechanism 6 drives the upper clamping plate 51 and the lower clamping plate 52 to clamp the hydrophobic nonwoven fabric 1. Step 4: Install multiple U-shaped blocks 41 on the first mounting plate 2 according to the car's moisture-proof requirements, and slide the first slider 31 according to the moisture-proof requirements so that the distance between two adjacent hydrophobic nonwoven fabrics 1 meets the requirements. Then rotate the adjusting bolt 33 to fix the hydrophobic nonwoven fabric 1. Step 5: Weld the two first mounting plates 2 at the location where the hydrophobic nonwoven fabric 1 needs to be laid on the car to make the hydrophobic nonwoven fabric 1 taut and complete the installation.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydrophobic multilayer nonwoven fabric, characterized in that, The device includes a fabric part and an installation part. The fabric part consists of a hydrophobic nonwoven fabric (1) and an aerogel filler (7). The installation part includes two first mounting plates (2). Each of the two first mounting plates (2) is equipped with a fixing mechanism (4) via a sliding adjustment mechanism (3). The fixing mechanism (4) includes a U-shaped block (41). The U-shaped block (41) is composed of an upper connecting plate (411), a vertical connecting plate (412), and a lower connecting plate (413). The hydrophobic nonwoven fabric (1) is placed between the upper connecting plate (411) and the lower connecting plate (413). The aerogel filler (7) is located between two adjacent hydrophobic nonwoven fabrics (1). A fixing needle (42) is slidably connected to the upper connecting plate (411). The fixing mechanism (4) also includes a limiting component (43). The limiting component (43) is installed on the lower connecting plate (413). A clamping mechanism (5) is installed on the vertical connecting plate (412), the clamping mechanism (5) includes an upper clamping plate (51) and a lower clamping plate (52); A transmission mechanism (6) is mounted on the fixing pin (42). The transmission mechanism (6) includes a connecting rod (61), which is fixedly connected to the fixing pin (42). A drive rack (62) is fixedly connected to the connecting rod (61). An installation groove (445) is provided on the end face of the upper connecting plate (411) away from the lower connecting plate (413). A first rotating shaft (63) is rotatably connected in the installation groove (445). A drive rack (62) is fixedly connected to the first rotating shaft (63). A drive gear (64) meshes with a drive rack (62). A steering gear (65) is rotatably connected in the mounting groove (445) via a mounting assembly (67). The steering gear (65) meshes with the drive gear (64). A driven rack (66) is slidably connected in the mounting groove (445). The driven rack (66) is connected to the upper clamping plate (51) via an adjusting assembly (68). The driven rack (66) meshes with the steering gear (65). Two first mounting plates (2) are welded together at the location where the hydrophobic nonwoven fabric (1) needs to be laid on the car, so that the hydrophobic nonwoven fabric (1) is taut and the installation is completed.

2. The hydrophobic multilayer nonwoven fabric according to claim 1, characterized in that, The lower connecting plate (413) has a slot (441) on its end face near the upper connecting plate (411). The lower connecting plate (413) has a second sliding groove (442) on its end face away from the vertical connecting plate (412) that communicates with the slot (441). A third sliding groove (443) is formed on the side wall of the second sliding groove (442). A limiting groove (421) is formed on the side wall of the fixing pin (42). One end of the fixing pin (42) away from the upper connecting plate (411) is inserted into the slot (441). The limiting component (43) includes a first limiting component. The first limiting rod (431) is slidably connected in the second slide groove (442), and one end of the first limiting rod (442) is inserted into the slot (441). The second slider (432) is slidably connected in the third slide groove (443). The second slider (432) is fixedly connected to the first limiting rod (431). A spring (433) is fixedly connected to the side wall of the third slide groove (443) away from the fixing pin (42). One end of the spring (433) near the fixing pin (42) is fixedly connected to the second slider (432).

3. The hydrophobic multilayer nonwoven fabric according to claim 2, characterized in that, The vertical connecting plate (412) has a fourth sliding groove (444) on its end face near the fixing pin (42). The upper clamping plate (51) is slidably connected in the fourth sliding groove (444), and the lower clamping plate (52) is fixedly connected to the lower connecting plate (413).

4. The hydrophobic multilayer nonwoven fabric according to claim 3, characterized in that, The upper clamping plate (51) has multiple arc-shaped grooves (511) on its end face near the lower clamping plate (52), and multiple protrusions (53) are fixedly connected to the end face of the lower clamping plate (52) near the upper clamping plate (51). The protrusions (53) and the arc-shaped grooves (511) are symmetrically arranged and mutually adapted.

5. The hydrophobic multilayer nonwoven fabric according to claim 4, characterized in that, The mounting groove (445) has a fifth sliding groove (446) on each side wall, and a sixth sliding groove (447) on the bottom wall of the fifth sliding groove (446). The upper connecting plate (411) has a right-angle groove (448) on each side wall that communicates with the two fifth sliding grooves (446) and the two sixth sliding grooves (447). The mounting assembly (67) includes two fixing blocks (671). The two fixing blocks (671) are slidably connected to the two sixth sliding grooves (447) through the two fifth sliding grooves (446) respectively. The two fixing blocks (671) are rotatably connected together with a common feature. The second rotating shaft (672) is fixedly connected to the steering gear (65); a connecting shaft (673) is fixedly connected to the end faces of the two fixed blocks (671) that are far apart from each other. The connecting shaft (673) is slidably connected in the right angle groove (448). A second limiting rod (674) is slidably connected on the connecting shaft (673). A first limiting rack (675) is also fixedly connected to the side walls on both sides of the upper connecting plate (411). One end of the second limiting rod (674) passes through the connecting shaft (673) and is inserted into the tooth gap of the first limiting rack (675).

6. The hydrophobic multilayer nonwoven fabric according to claim 5, characterized in that, The upper clamping plate (51) has a groove (512) along its length on the end face away from the lower clamping plate (52). The adjusting component (68) includes a plug (681), which is fixedly connected to the end face of the driven rack (66) near the upper clamping plate (51). A limiting tooth block (682) is fixedly connected to the side wall of the plug (681), and a second limiting rack (683) is fixedly connected to the side wall of the groove (512). The limiting tooth block (682) is engaged in the tooth gap of the second limiting rack (683).

7. The hydrophobic multilayer nonwoven fabric according to claim 6, characterized in that, The two first mounting plates (2) are provided with first sliding grooves (21) on their end faces that are close to each other. The sliding adjustment mechanism (3) includes a first slider (31). The first slider (31) is slidably connected in the first sliding groove (21). The first slider (31) is fixedly connected to the vertical connecting plate (412). A rubber block (32) is fixedly connected to the end of the first slider (31) away from the vertical connecting plate (412). A plurality of screw holes (22) are provided on the side wall of the first mounting plate (2) away from the fixing pin (42). An adjusting bolt (33) is threadedly connected in the screw hole (22). A pin (34) is fixedly connected to the end of the adjusting bolt (33) near the vertical connecting plate (412). The end of the pin (34) away from the adjusting bolt (33) is inserted into the rubber block (32).

8. A processing technology for hydrophobic multilayer nonwoven fabric, characterized in that, Processing the hydrophobic multilayer nonwoven fabric according to claim 7 includes the following steps: Step 1: Cut the hydrophobic nonwoven fabric (1) according to the size of the hydrophobic nonwoven fabric (1) to be used to cover the inside of the car. Step 2: Measure the laying thickness according to the required number of laying layers, then replace the steering gear (65) of the corresponding size according to the laying thickness, and adjust the driven rack (66) to mesh with the steering gear (65); Step 3: Place the hydrophobic nonwoven fabric (1) into the U-shaped block (41), pull the first limiting rod (431), and then press the fixing needle (42) so that the fixing needle (42) pierces the hydrophobic nonwoven fabric (1) and inserts into the slot (441). Then release the first limiting rod (431) so that the first limiting rod (431) is inserted into the limiting groove (421) to limit the fixing needle (42). When the fixing needle (42) is pressed, the transmission mechanism (6) drives the upper clamping plate (51) and the lower clamping plate (52) to clamp the hydrophobic nonwoven fabric (1). Step 4: Install multiple U-shaped blocks (41) on the first mounting plate (2) according to the moisture-proof requirements of the car, and slide the first slider (31) according to the moisture-proof requirements so that the distance between two adjacent hydrophobic nonwoven fabrics (1) meets the requirements. Then rotate the adjusting bolt (33) to fix the hydrophobic nonwoven fabric (1). Step 5: Weld the two first mounting plates (2) at the location where the hydrophobic nonwoven fabric (1) needs to be laid on the car to make the hydrophobic nonwoven fabric (1) taut and complete the installation.

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