A post-treatment and drying device for three-dimensional double-sided woven nonwoven fabric used in transportation vehicles.

Abstract

This utility model relates to the field of nonwoven fabric post-processing technology, and provides a three-dimensional double-sided knitted nonwoven fabric post-processing drying device for transportation vehicles. It includes a pre-drying component and a guiding tensioning mechanism mounted on a workbench, a drying component mounted on the guiding tensioning mechanism, and a convection fan located at the bottom of the drying component. The pre-drying component includes an upper drying cylinder and a lower drying cylinder mounted on a mounting plate. The guiding tensioning mechanism includes symmetrically arranged guiding components and tensioning components. The drying component includes a third hot air fan mounted on the tensioning component, a connecting pipe connected to the third hot air fan, and a first air outlet pipe and a second air outlet pipe. This device solves the problems of insufficient overall drying of the nonwoven fabric and shrinkage during the drying process caused by simply moving the drying cylinder. It achieves drying from the top and bottom of the nonwoven fabric through convection, ensuring sufficient drying while simultaneously tensioning the nonwoven fabric to prevent shrinkage.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric post-processing technology, and more specifically, it relates to a post-processing and drying device for three-dimensional double-sided woven nonwoven fabric used in transportation vehicles. Background Technology

[0002] To address the issues of odor and VOC emissions associated with traditional automotive interior fabric bonding processes that affect the materials' odor and VOC emissions, a three-dimensional double-sided stitch-woven nonwoven fabric is used to replace the sponge layer in composite materials. The bonding process utilizes environmentally friendly hot melt adhesive, resulting in a green, pollution-free, and more durable product. The stitch-woven nonwoven fabric undergoes post-processing, including high-temperature drying to enhance its flame-retardant properties.

[0003] Patent CN221320278U discloses a post-processing device for spunlace nonwoven fabric. The device uses a transmission rod to rotate a reciprocating screw, which in turn moves a connecting frame and ultimately a drying cylinder. This allows the nonwoven fabric to be dried during the winding process, thus preventing liquid from affecting the winding of the spunlace nonwoven fabric. By moving the drying cylinder back and forth, the spunlace nonwoven fabric can be dried evenly.

[0004] While the aforementioned equipment can dry nonwoven fabric during the winding process by moving the drying drum, the drum can only dry the nonwoven fabric within its airflow range, regardless of its movement. Ensuring sufficient drying necessitates reducing the winding speed. Furthermore, proper tensioning is required during the drying process to prevent shrinkage. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a three-dimensional double-sided braided nonwoven fabric post-processing drying device for vehicles that dries the nonwoven fabric from the top and bottom through convection, ensuring thorough drying while keeping the nonwoven fabric taut to avoid wrinkling.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A post-processing drying device for three-dimensional double-sided woven nonwoven fabric used in transportation vehicles includes a workbench, a pre-drying component and a guide tensioning mechanism mounted on the workbench, a drying component mounted on the guide tensioning mechanism, and a convection fan disposed at the bottom of the drying component. The pre-drying component includes two symmetrically arranged mounting plates and an upper drying cylinder and a lower drying cylinder mounted on the mounting plates. The guide tensioning mechanism includes a symmetrically arranged guide component and a tensioning component. The guide component includes a first guide frame and a first guide shaft and a second guide shaft mounted on the first guide frame. The tensioning component includes a second guide frame, a tensioning shaft mounted on the second guide frame, and a telescopic rod connected to the second guide frame. The drying component includes a third hot air blower mounted on the tensioning component, a connecting pipe communicating with the third hot air blower, a first air outlet pipe and a second air outlet pipe disposed between the guide component and the tensioning component, and a second air outlet hole opened on the first air outlet pipe and the second air outlet pipe.

[0008] The present invention is further configured such that: the connecting pipe is arranged vertically downwards, and its two ends are respectively connected to the first air outlet pipe and the second air outlet pipe.

[0009] The present invention is further configured such that: the first air outlet pipe and the second air outlet pipe are symmetrically arranged, and a plurality of second air outlet holes are opened on the first air outlet pipe and the second air outlet pipe along their length directions.

[0010] The present invention is further configured such that: connecting parts are provided at both ends of the upper drying cylinder and the lower drying cylinder, the connecting parts are mounted on the mounting plate, and a plurality of first air outlet holes are provided around the upper drying cylinder and the lower drying cylinder.

[0011] The present invention is further configured such that: one end of the upper drying cylinder is connected to a first hot air blower, and one end of the lower drying cylinder is connected to a second hot air blower, with the first hot air blower and the second hot air blower respectively disposed on both sides of the mounting plate.

[0012] The present invention is further configured such that: multiple convection fans are arranged along the length of the workbench, each convection fan includes a main frame, an air outlet mesh arranged on the main frame, and fan blades arranged inside the air outlet mesh, and an air inlet is provided at the bottom of the main frame.

[0013] The present invention is further configured such that: the guide assembly is disposed close to the pre-drying assembly, the first guide shaft and the second guide shaft are fixedly mounted on the first guide frame, and the second guide shaft is disposed above the first guide shaft.

[0014] The present invention is further configured such that: a second limiting member is rotatably connected to both ends of the tensioning shaft, the second limiting member is slidably installed on the second guide frame, and the telescopic rod is connected to the second limiting member.

[0015] The beneficial effects of this utility model are:

[0016] During the drying process of nonwoven fabric, it first passes through the gap between the upper and lower drying cylinders for pre-drying. Then, it passes through the guide assembly and tensioning assembly for tensioning to prevent wrinkles from forming during the drying process. During the tensioning and conveying process, the hot air discharged from the first and second air outlet pipes comes into contact with the nonwoven fabric tensioned between the guide assembly and the tensioning assembly, which fully dries the nonwoven fabric and ensures that it is fully dried before being rolled up. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is a schematic diagram of the post-treatment and drying device for three-dimensional double-sided woven nonwoven fabric used in transportation vehicles according to this utility model.

[0019] Figure 2 for Figure 1 The top view shown.

[0020] Figure 3 For along Figure 2 A cross-sectional view showing section line AA.

[0021] Figure 4 for Figure 1 The diagram shows the structure of the pre-drying assembly.

[0022] Figure 5 for Figure 1 The diagram shows the structure of the post-processing drying device for removing the pre-drying components.

[0023] Figure 6 for Figure 5 The sectional view shown.

[0024] Explanation of reference numerals in the attached diagram: 1. Workbench;

[0025] 2. Pre-drying assembly; 21. Mounting plate; 22. First hot air blower; 23. Second hot air blower; 24. Connecting parts; 25. Upper drying cylinder; 26. Lower drying cylinder; 27. First air outlet;

[0026] 3. Guide tensioning mechanism; 31. Guide assembly; 311. First guide frame; 312. First limiting member; 313. First guide shaft; 314. Second guide shaft; 32. Tensioning assembly; 321. Second guide frame; 322. Second limiting member; 323. Tensioning shaft; 324. Telescopic rod;

[0027] 4. Drying assembly; 41. Third hot air blower; 42. Connecting pipe; 43. First air outlet pipe; 44. Second air outlet pipe; 45. Second air outlet;

[0028] 5. Convection fan; 51. Main frame; 52. Air outlet; 53. Fan blades; 54. Air inlet. Detailed Implementation

[0029] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the present utility model, and therefore only shows the components relevant to the present utility model. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] Please refer to Figure 1 A post-processing drying device for three-dimensional double-sided knitted nonwoven fabric used in transportation vehicles includes a worktable 1, a pre-drying assembly 2 and a guide tensioning mechanism 3 mounted on the worktable 1, a drying assembly 4 mounted on the guide tensioning mechanism 3, and a convection fan 5 disposed at the bottom of the drying assembly 4. The convection fan 5 is positioned between the guide tensioning mechanism 3. During post-processing, the nonwoven fabric first passes through the pre-drying assembly 2 for pre-drying, then passes through the guide tensioning mechanism 3 for tensioning. The tensioned nonwoven fabric then passes through the top drying assembly 4 for drying, while the convection fan 5 at the bottom assists by generating airflow to accelerate airflow from the top and bottom of the nonwoven fabric, increasing the drying speed and ensuring sufficient drying before winding. A winding device (not shown in the figure) can be connected to the side of the guide tensioning mechanism 3 away from the pre-drying assembly 2 to wind up the dried nonwoven fabric.

[0031] Please refer to Figure 1-4The pre-drying assembly 2 includes two symmetrically arranged mounting plates 21 and an upper drying cylinder 25 and a lower drying cylinder 26 mounted on the mounting plates 21. The two mounting plates 21 are symmetrically arranged along the width direction of the workbench 1, and the upper drying cylinder 25 and the lower drying cylinder 26 are positioned between the two mounting plates 21. Connectors 24 are provided at both ends of the upper drying cylinder 25 and the lower drying cylinder 26. The connectors 24 are mounted on the mounting plates 21 and have bearings inside to ensure that both the upper drying cylinder 25 and the lower drying cylinder 26 can rotate relative to the mounting plates 21. A gap is provided between the upper drying cylinder 25 and the lower drying cylinder 26 for the non-woven fabric to pass through. When the non-woven fabric passes through the gap between the upper drying cylinder 25 and the lower drying cylinder 26, it can synchronously drive the upper drying cylinder 25 and the lower drying cylinder 26 to rotate. A first hot air blower 22 is connected to one end of the upper drying cylinder 25, and a second hot air blower 23 is connected to one end of the lower drying cylinder 26. The first hot air blower 22 and the second hot air blower 23 are respectively located on both sides of the mounting plate 21. The outlet of the first hot air blower 22 is connected to the interior of the upper drying cylinder 25, and the outlet of the second hot air blower 23 is connected to the interior of the lower drying cylinder 26. Several first air outlets 27 are arranged around the upper and lower drying cylinders 25 and 26. The hot air generated by the first and second hot air blowers 22 and 23 can enter the upper and lower drying cylinders 25 and 26 respectively. When the nonwoven fabric passes through the gap between the upper and lower drying cylinders 25 and 26, the hot air can be discharged through the first air outlets 27, contacting the nonwoven fabric and thus pre-drying it.

[0032] Please refer to Figure 1-3 and Figure 5-6 The guiding tensioning mechanism 3 includes a symmetrically arranged guiding component 31 and a tensioning component 32. The guiding component 31 is located close to the pre-drying component 2, and the tensioning component 32 can be connected to a winding device (not shown in the figure) on the side away from the guiding component 31. The guiding component 31 includes a first guide frame 311 and a first guide shaft 313 and a second guide shaft 314 mounted on the first guide frame 311. The first guide frame 311 is arranged along the width direction of the worktable 1. The first guide shaft 313 and the second guide shaft 314 are fixedly mounted on the first guide frame 311. A first limiting member 312 is rotatably connected to both ends of the first guide shaft 313 and the second guide shaft 314. The first limiting member 312 is fixedly mounted on the inner wall of the first guide frame 311. A gap is left between the first guide shaft 313 and the second guide shaft 314 for the nonwoven fabric to pass through. The nonwoven fabric can pass through the gap between the first guide shaft 313 and the second guide shaft 314, and can synchronously drive the first guide shaft 313 and the second guide shaft 314 to rotate during the nonwoven fabric conveying process.

[0033] Please refer to Figure 1-3 and Figure 5-6The tensioning assembly 32 includes a second guide frame 321, a tensioning shaft 323 mounted on the second guide frame 321, and a telescopic rod 324 connected to the second guide frame 321. The second guide frame 321 is arranged along the width direction of the worktable 1. The tensioning shaft 323 is installed inside the second guide frame 321, and second limiting members 322 are rotatably connected to both ends of the tensioning shaft 323. The second limiting members 322 at both ends of the tensioning shaft 323 are slidably mounted on the inner wall of the second guide frame 321. The telescopic rod 324 is connected to the second limiting members 322, and the other end of the telescopic rod 324 is connected to the top of the second guide frame 321. The telescopic rod 324 includes a connecting rod and a sleeve that is slidably sleeved on the outside of the connecting rod. The sleeve has a hollow structure and is connected to the second limiting members 322. The connecting rod is connected to the second guide frame 321, and a telescopic spring is provided inside the telescopic rod 324. Specifically, one end of the telescopic spring abuts against the inner wall of the sleeve rod, and the other end abuts against the end of the connecting rod. When the telescopic spring is compressed, it can drive the telescopic rod 324 to extend or retract through the contraction of the telescopic spring. The height of the winding device is higher than the height of the tensioning shaft 323. After the nonwoven fabric passes between the tensioning shafts 323, under the winding action of the winding device, the nonwoven fabric abuts against the tensioning shaft 323, causing the telescopic rod 324 to be stressed. The telescopic spring inside the telescopic rod 324 is compressed, causing the sleeve rod to slide relative to the connecting rod, thereby realizing the extension or retraction of the telescopic rod 324. Regardless of the change in the thickness of the nonwoven fabric, the telescopic rod 324 can drive the tensioning shaft 323 to adjust its position in the vertical direction, so that the nonwoven fabric always remains in an upward abutment against the tensioning shaft 323, thereby tensioning the nonwoven fabric between the guide assembly 31 and the tensioning assembly 32, and preventing wrinkles from occurring during the drying process of the nonwoven fabric.

[0034] Please refer to Figure 1-3 and Figure 5-6The drying assembly 4 includes a third hot air blower 41 mounted on the tensioning assembly 32, a connecting pipe 42 communicating with the third hot air blower 41, and a first air outlet pipe 43 and a second air outlet pipe 44 disposed between the guide assembly 31 and the tensioning assembly 32. The third hot air blower 41 is mounted on the top of the second guide frame 321, and its air outlet is connected to the connecting pipe 42, which is arranged vertically downwards. Both ends of the connecting pipe 42 are provided with bends, and the bottom ends of the connecting pipe 42 are respectively connected to the first air outlet pipe 43 and the second air outlet pipe 44. Both the first air outlet pipe 43 and the second air outlet pipe 44 are arranged along the length of the workbench 1, and both ends of the first air outlet pipe 43 and the second air outlet pipe 44 are sealed. The first air outlet pipe 43 and the second air outlet pipe 44 are located between the guide assembly 31 and the tensioning assembly 32, and can dry the non-woven fabric tensioned between the guide assembly 31 and the tensioning assembly 32. The first air outlet pipe 43 and the second air outlet pipe 44 are symmetrically arranged. Several second air outlet holes 45 are formed along the length of both pipes. The distance between two second air outlet holes 45 gradually decreases from the end closer to the connecting pipe 42 to the end farther from the connecting pipe 42, thus ensuring uniform airflow along the length of the first air outlet pipe 43 and the second air outlet pipe 44. The hot air generated by the third hot air blower 41 can be transported through the connecting pipe 42 to the interiors of the first air outlet pipe 43 and the second air outlet pipe 44 respectively. When the hot air flows inside the first air outlet pipe 43 and the second air outlet pipe 44, it is discharged along the several second air outlet holes 45 along the length of the first air outlet pipe 43 and the second air outlet pipe 44, thereby contacting the non-woven fabric tensioned between the guide assembly 31 and the tensioning assembly 32, and thoroughly drying the non-woven fabric. The first air outlet pipe 43 and the second air outlet pipe 44 are arranged between the guide assembly 31 and the tensioning assembly 32, which can fully ensure that all parts of the nonwoven fabric along the length of the nonwoven fabric located between the guide assembly 31 and the tensioning assembly 32 can fully contact the hot air, thereby improving the drying effect during the tensioning and conveying process of the nonwoven fabric.

[0035] Please refer to Figure 1 , 3 and Figure 5-6Multiple convection fans 5 are arranged along the length of the workbench 1. Each convection fan 5 includes a main frame 51, an air outlet net 52 disposed on the main frame 51, and fan blades 53 disposed inside the air outlet net 52. The main frame 51 is installed on the top of the workbench 1 and located below the non-woven fabric. A driving component is provided inside the main frame 51, which can drive the fan blades 53 to rotate. The driving component is a technical means well known to those skilled in the art, and the specific type and model are not specifically limited in this application. An air inlet 54 is opened at the bottom of the main frame 51, which penetrates the workbench 1. In specific installation, a support is provided at the bottom of the workbench 1 to ensure that the airflow can enter the convection fan 5 through the air inlet 54. The air outlet net 52 is located at the top of the main frame 51. The airflow generated by the rotation of the fan blades 53 can be discharged through the air outlet net 52, generating airflow that contacts the bottom of the non-woven fabric, thereby accelerating the gas flow speed on the surface of the non-woven fabric and improving the drying efficiency.

[0036] During the drying process, the nonwoven fabric first passes through the gap between the upper drying cylinder 25 and the lower drying cylinder 26. After being pre-dried by the upper drying cylinder 25 and the lower drying cylinder 26, it passes through the guide assembly 31 and the tensioning assembly 32 respectively to be tensioned to prevent wrinkles from forming during the drying process. During the tensioning and conveying process of the nonwoven fabric, the hot air discharged from the first air outlet pipe 43 and the second air outlet pipe 44 comes into contact with the nonwoven fabric tensioned between the guide assembly 31 and the tensioning assembly 32, and fully dries the nonwoven fabric to ensure that it is fully dried before being rolled up.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A three-dimensional double-sided sewing nonwoven fabric post-processing drying device for a vehicle, characterized by: The device includes a workbench (1), a pre-drying assembly (2) mounted on the workbench (1), a guide tensioning mechanism (3), a drying assembly (4) mounted on the guide tensioning mechanism (3), and a convection fan (5) located at the bottom of the drying assembly (4). The pre-drying assembly (2) includes two symmetrically arranged mounting plates (21) and an upper drying cylinder (25) and a lower drying cylinder (26) mounted on the mounting plates (21). The guide tensioning mechanism (3) includes a symmetrically arranged guide assembly (31) and a tensioning assembly (32). The guide assembly (31) includes a first guide frame (311) and a first guide shaft mounted on the first guide frame (311). (313) and second guide shaft (314), the tensioning assembly (32) includes a second guide frame (321), a tensioning shaft (323) mounted on the second guide frame (321) and a telescopic rod (324) connected to the second guide frame (321), the drying assembly (4) includes a third hot air blower (41) mounted on the tensioning assembly (32), a connecting pipe (42) connected to the third hot air blower (41), a first air outlet pipe (43) and a second air outlet pipe (44) disposed between the guide assembly (31) and the tensioning assembly (32), and a second air outlet hole (45) opened on the first air outlet pipe (43) and the second air outlet pipe (44).

2. The apparatus according to claim 1, wherein the apparatus is characterized by: The connecting pipe (42) is set vertically downward and its two ends are connected to the first air outlet pipe (43) and the second air outlet pipe (44) respectively.

3. The apparatus according to claim 2, wherein the apparatus is characterized by: The first air outlet pipe (43) and the second air outlet pipe (44) are symmetrically arranged, and a plurality of second air outlet holes (45) are opened on the first air outlet pipe (43) and the second air outlet pipe (44) along their length direction.

4. The apparatus according to claim 1, wherein the apparatus is characterized by: Connectors (24) are provided at both ends of the upper drying cylinder (25) and the lower drying cylinder (26). The connectors (24) are mounted on the mounting plate (21). Several first air outlets (27) are provided around the upper drying cylinder (25) and the lower drying cylinder (26).

5. The apparatus according to claim 4, wherein the apparatus is characterized by: The upper drying cylinder (25) is connected to a first hot air blower (22) at one end, and the lower drying cylinder (26) is connected to a second hot air blower (23) at one end. The first hot air blower (22) and the second hot air blower (23) are respectively installed on both sides of the mounting plate (21).

6. The apparatus according to claim 1, wherein the apparatus is a three-dimensional double-sided sewing nonwoven fabric post-processing drying device for a vehicle. Multiple convection fans (5) are arranged along the length of the workbench (1). Each convection fan (5) includes a main frame (51), an air outlet net (52) arranged on the main frame (51), and a fan blade (53) arranged inside the air outlet net (52). An air inlet (54) is opened at the bottom of the main frame (51).

7. The post-treatment and drying device for three-dimensional double-sided woven nonwoven fabric for transportation vehicles according to claim 1, characterized in that: The guide assembly (31) is located close to the pre-drying assembly (2). The first guide shaft (313) and the second guide shaft (314) are fixedly installed on the first guide frame (311), and the second guide shaft (314) is located above the first guide shaft (313).

8. The apparatus according to claim 7, wherein the apparatus is characterized by: The second limiting piece (322) is rotatably connected with both ends of the tensioning shaft (323), is slidingly installed on the second guide frame (321), and the telescopic rod (324) is connected with the second limiting piece (322).

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