Needle-punched non-woven fabric forming device and system

Abstract

The utility model belongs to the field of non-woven fabric production, and particularly relates to a needle-punched non-woven fabric forming device and system. The device comprises a hollow first air pressure cabin, the first air pressure cabin is provided with a plurality of channels penetrating through cabin walls on two opposite sides, the first air pressure cabin is communicated with a first steam pipeline, and the channels are arranged in parallel; the hollow second air pressure cabin is parallel to the first air pressure cabin, a plurality of through holes are formed in the cabin wall, facing the first air pressure cabin, of the second air pressure cabin, and the second air pressure cabin is communicated with a second steam pipeline; and a gap is formed between the first air pressure cabin and the second air pressure cabin. According to the non-woven fabric needling device, in the needling process of the non-woven fabric, high-temperature and high-humidity treatment can be conducted on the non-woven fabric through saturated vapor pressure, the flexibility of fibers is improved, fiber damage is reduced, and the mechanical property of the non-woven fabric is improved.

Description

Technical Field

[0001] The utility model belongs to the field of non-woven fabric production, and specifically relates to a needle-punched non-woven fabric forming device and system. Background Art

[0002] Needle-punched nonwoven fabrics are a processing method that mechanically combines fibers to form fabrics. During the formation of needle-punched nonwoven fabrics, the puncture and withdrawal action of the needle causes the fibers in the fiber layer to be pushed, stretched and interlaced, resulting in the fibers being entangled with each other. As the needle continues to puncture, the fiber layer is gradually compressed and compacted to form a mesh structure, and the friction and tension between the fibers cause them to bind to each other. During the manufacturing process of needle-punched nonwoven fabrics, the needle machine uses high-speed needles to puncture, rub and stretch the fiber web, and the rigidity of the fiber itself will resist this stress, resulting in damage and breakage of the fiber. In addition, friction and stretching occur between the fibers, especially when the needle passes through the fiber layer, resulting in wear and breakage of the fiber surface. In view of this, in order to solve the above problems, improving the softness of the fiber is crucial to improving the mechanical properties of nonwoven fabrics.

[0003] At present, the way to improve the softness of fibers is to pre-treat them at high temperature and high humidity. The main method is saturated steam pressure treatment. That is, before the needle-punched non-woven fabric is needled, the fiber web passes through a box filled with saturated steam pressure in advance, so that the fibers in the fiber web become soft in a high temperature and high humidity environment before entering the needle-punched plate for needle-punching.

[0004] The longer the fiber web is treated with high temperature and high humidity, the better the fiber treatment effect. Therefore, the common method is to increase the length of the saturated steam pressure box and reduce the speed of the fiber web passing through the box. However, increasing the length of the box will increase the cost of use and the cost of land, while reducing the speed of the fiber web will reduce production efficiency. Utility Model Content

[0005] In order to solve the deficiencies of the prior art, the utility model provides a needle-punched nonwoven fabric forming device and system. Through the utility model, during the needle-punching process of the nonwoven fabric, the nonwoven fabric can be subjected to high temperature and high humidity treatment using saturated steam pressure, thereby improving the softness of the fiber, reducing fiber damage, and improving the mechanical properties of the nonwoven fabric.

[0006] The technical solution provided by the utility model is as follows:

[0007] A needle-punched nonwoven fabric forming device, comprising:

[0008] A hollow first pressure chamber, wherein the first pressure chamber has a plurality of passages penetrating the chamber walls on opposite sides, the first pressure chamber is connected to a first steam pipe, and the passages are arranged in parallel;

[0009] and a hollow second pressure chamber arranged in parallel with the first pressure chamber, wherein a wall of the second pressure chamber facing the first pressure chamber is provided with a plurality of through holes, and the second pressure chamber is connected to a second steam pipe;

[0010] in:

[0011] The first air pressure cabin is fixedly arranged;

[0012] The second air pressure cabin is fixedly arranged;

[0013] There is a gap between the first air pressure chamber and the second air pressure chamber;

[0014] The channels and the through holes are arranged in one-to-one correspondence.

[0015] Based on the above technical solution:

[0016] The first pressure chamber is a cavity structure with multiple steam outlet channels, which is used to store and release saturated high-temperature steam through the outlets on the upper and lower end surfaces of the channels. The arrangement of the channels corresponds to the needles on the needle punching plate. The outlets in the steam channel close to the needle punching plate are used to pre-treat the needles on the needle punching plate with high temperature and high humidity to ensure that the surface temperature of the needles is consistent with the temperature of the non-woven fabric when they penetrate the non-woven fabric. The outlets in the steam channel close to the second pressure chamber are used to treat the upper surface of the needle punched non-woven fabric with high temperature and high humidity.

[0017] The second pressure chamber is a cavity structure with multiple steam outlet holes, which is used to store and release saturated high-temperature steam. The holes are arranged corresponding to the needles on the needle punching plate. Each hole is used to perform high-temperature and high-humidity treatment on the lower surface of the needle-punched non-woven fabric.

[0018] Specifically, the channels are arranged in an array, and correspondingly, the through holes are arranged in an array, and are respectively arranged corresponding to the needles on the needle plate.

[0019] Preferably, the corresponding channels, through holes and needles are coaxially arranged.

[0020] Specifically, the first pressure cabin is a flat cavity structure having a pair of parallel bulkheads, and each of the channels vertically penetrates the pair of parallel bulkheads of the first pressure cabin.

[0021] Specifically, the second air pressure cabin is a flat cavity structure having a pair of cabin walls parallel to each other.

[0022] Preferably, the first pressure cabin is a rectangular parallelepiped structure; the second pressure cabin is a rectangular parallelepiped structure.

[0023] Preferably, the first pressure cabin and the second pressure cabin are arranged in parallel, and the relative bulkheads of the first pressure cabin and the second pressure cabin are arranged in parallel.

[0024] Specifically, the first steam pipeline and the second steam pipeline are connected to the same air pressure valve.

[0025] Optionally, the first steam pipe and the second steam pipe are each connected to an air pressure valve.

[0026] Based on the above technical solution:

[0027] The air pressure valve is used to control the quantitative delivery of saturated steam pressure. One end of the air pressure valve is used to connect the steam pipeline, and the other end of the air pressure valve is used to connect the saturated steam pressure gas storage tank.

[0028] Preferred:

[0029] The first air pressure cabin is arranged horizontally;

[0030] The second air pressure cabin is arranged horizontally;

[0031] The first air pressure cabin is located above the second air pressure cabin;

[0032] The first pressure chamber is connected to the first steam pipe at the peripheral wall;

[0033] The second air pressure cabin is connected to the second steam pipe at the peripheral wall and / or the bottom wall.

[0034] The first air pressure cabin and the second air pressure cabin can also be tilted as needed.

[0035] The utility model also provides a needle-punched nonwoven fabric forming system, which at least comprises:

[0036] Needle punched nonwoven fabric forming device;

[0037] A needle plate having needles corresponding to the channels;

[0038] A driving mechanism, used for driving the acupuncture plate to move along the direction of the channel, and to insert the acupuncture plate into the channel, into the gap, or into the through hole;

[0039] and a steam supply device, wherein the steam supply device is connected to the first steam pipeline and the second steam pipeline respectively through an air pressure valve.

[0040] Preferably, the height of the gap is 50 mm-80 mm.

[0041] Preferably, the steam temperature in the first pressure chamber is 110-130°C, and the pressure is 130-150 kPa; the steam temperature in the second pressure chamber is 110-130°C, and the pressure is 130-150 kPa.

[0042] The utility model also discloses a needle-punched nonwoven fabric forming method, comprising the following steps:

[0043] 1) conveying the nonwoven fabric to the gap;

[0044] 2) The air pressure valve opens and the needle falls;

[0045] 3) The air pressure valve is closed and the needle enters the channel;

[0046] 4) passing the needle through the channel;

[0047] 5) Punching the nonwoven fabric with a needle;

[0048] 6) The needle enters the through hole;

[0049] 7) The air pressure valve opens and the needle is reset.

[0050] The beneficial effects of the utility model are as follows:

[0051] Improve mechanical properties: In high temperature and high humidity environment, the fiber becomes soft, reducing the damage of the needle to the fiber, thereby improving the strength of the non-woven fabric.

[0052] Enhance product softness: Through saturated steam pressure, non-woven fabrics become soft under the action of high temperature and high humidity, improving the feel of the product.

[0053] Improve molding efficiency: Saturated steam pressure can promote the cross-linking and bonding between fibers, making the molding speed of non-woven fabrics faster and the production efficiency higher.

[0054] Improve surface quality: Through saturated steam pressure heating, the fibers are more easily shaped, which is conducive to forming a smooth and uniform surface and improving the appearance quality of non-woven fabrics.

[0055] Cleaning and sterilization: Bacteria on the surface of non-woven fabrics are killed by high temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the overall structure of the needle-punched nonwoven fabric forming device provided by the utility model.

[0057] Figure 2 It is a structural schematic diagram of the first air pressure cabin provided by the utility model.

[0058] Figure 3 It is a schematic diagram of the internal structure of the first air pressure cabin provided by the utility model.

[0059] Figure 4 It is a structural schematic diagram of the second air pressure cabin provided by the utility model.

[0060] Figure 5 It is a schematic diagram of the internal structure of the second air pressure cabin provided by the utility model.

[0061] Figure 6 It is a structural schematic diagram of the needle-punched nonwoven fabric forming system provided by the utility model.

[0062] Attached Figures 1 to 6 The structures represented by the labels are listed below:

[0063] 1. Acupuncture plate, 2. First air pressure chamber, 3. Second air pressure chamber, 4. First steam pipe, 5. Air pressure valve, 6. Channel, 7. Through hole, 8. Gap, 9. Non-woven fabric. DETAILED DESCRIPTION

[0064] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0065] Example 1

[0066] like Figure 1 As shown, the needle-punched nonwoven fabric forming device comprises: a fixedly arranged hollow first air pressure chamber 2, and a fixedly arranged hollow second air pressure chamber 3. There is a gap 8 between the first air pressure chamber 2 and the second air pressure chamber 3 for the nonwoven fabric to pass through.

[0067] The first pressure chamber 2 has passages 6 penetrating the opposite side walls. The first pressure chamber 2 is connected to the first steam pipe. The passages 6 are arranged in an array and are arranged in parallel.

[0068] The hollow second pressure cabin 3 is arranged parallel to the first pressure cabin 2. The wall of the second pressure cabin 3 facing the first pressure cabin 2 is provided with a plurality of through holes 7. The second pressure cabin 3 is connected to the second steam pipe. The through holes 7 are arranged in an array and are arranged one by one with each channel 6.

[0069] Based on this technical solution, steam can be output through the steam channel to perform high-temperature and high-humidity pretreatment on the needles on the needle punched plate, and to perform high-temperature and high-humidity treatment on the needle punched nonwoven fabric.

[0070] Example 2

[0071] like Figure 2 , 3 The first air pressure chamber 2 is a hollow structure of a rectangular parallelepiped structure, and the height of the hollow structure can be 20 mm. Each channel 6 vertically penetrates the first air pressure chamber 2. Figure 4 , 5 As shown, the second pressure chamber 3 is a hollow structure of a rectangular parallelepiped structure, and the height of the hollow structure can be 20 mm. Each through hole 7 is located on the wall facing the first pressure chamber 2. The first pressure chamber 2 and the second pressure chamber 3 are arranged in parallel. The structure is compact and easy to implement.

[0072] Example 3

[0073] like Figure 1 As shown, the first pressure cabin 2 is arranged horizontally. The second pressure cabin 3 is arranged horizontally. The first pressure cabin 2 is located above the second pressure cabin 3. This layout is compact and easy to match with the non-woven fabric production line.

[0074] Example 4

[0075] like Figure 1 As shown, the first steam pipe 4 and the second steam pipe are connected to the same air pressure valve 5. The first air pressure chamber 2 is connected to the first steam pipe 4 at the peripheral wall. The second air pressure chamber 3 is connected to the second steam pipe at the bottom wall.

[0076] In other embodiments, it may also be configured that the first steam pipeline and the second steam pipeline are each connected to a gas pressure valve.

[0077] Based on this solution, the output of steam can be conveniently controlled.

[0078] Example 5

[0079] like Figure 6 As shown, the needle-punched nonwoven fabric forming system includes: a needle-punched nonwoven fabric forming device, a needle-punched plate 1, a driving mechanism and a steam supply device.

[0080] The needling plate 1 has needles corresponding to the channels 6. The driving mechanism is used to drive the needling plate 1 to move along the channel 6. The steam supply device is connected to the first steam pipeline and the second steam pipeline respectively through the air pressure valve.

[0081] Based on the nonwoven fabric forming system, the nonwoven fabric can be pretreated with steam.

[0082] The working mode of the needle punch nonwoven forming system includes the following steps:

[0083] 1) transporting the nonwoven fabric 9 to the gap 8;

[0084] 2) The air pressure valve opens, the needle falls, and the steam treats the needle and the upper surface of the non-woven fabric with high temperature and high humidity;

[0085] 3) The air pressure valve is closed to save steam, and the needle enters the channel 6;

[0086] 4) The needle passes through the channel 6;

[0087] 5) acupuncture the nonwoven fabric 9 with a needle;

[0088] 6) The needle enters the through hole 7;

[0089] 7) The air pressure valve opens, the needle is reset, and the steam continues to treat the non-woven fabric with high temperature and high humidity.

[0090] Working parameters: The saturated steam temperature provided by the steam supply device is 120℃ and the pressure is 140kPa.

[0091] The saturated steam pressure performs high temperature and high humidity pretreatment on the fiber before each needling action, which can not only greatly improve the treatment effect of the saturated steam pressure on the fiber, but also reduce the waste of the saturated steam pressure.

[0092] 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 should be included in the protection scope of the present invention.

Claims

1. A needle-punched nonwoven fabric forming device, characterized in that: include: A hollow first pressure chamber (2), wherein the first pressure chamber (2) has a plurality of passages (6) penetrating the chamber walls on opposite sides, the first pressure chamber (2) being connected to a first steam pipe, and the passages (6) being arranged in parallel; and a hollow second pressure chamber (3) arranged in parallel with the first pressure chamber (2), wherein a wall of the second pressure chamber (3) facing the first pressure chamber (2) is provided with a plurality of through holes (7), and the second pressure chamber (3) is connected to a second steam pipe; in: The first air pressure cabin (2) is fixedly arranged; The second air pressure cabin (3) is fixedly arranged; There is a gap (8) between the first air pressure chamber (2) and the second air pressure chamber (3); Each of the channels (6) and each of the through holes (7) are arranged in one-to-one correspondence.

2. The needle-punched nonwoven fabric forming device according to claim 1, characterized in that: The first pressure chamber (2) is a flat cavity structure having a pair of mutually parallel bulkheads, and each of the channels (6) vertically penetrates the pair of mutually parallel bulkheads of the first pressure chamber (2).

3. The needle-punched nonwoven fabric forming device according to claim 2, characterized in that: The channels (6) are arranged in an array; The first air pressure cabin (2) is a rectangular parallelepiped structure.

4. The needle-punched nonwoven fabric forming device according to claim 1, characterized in that: The second air pressure cabin (3) is a flat cavity structure having a pair of cabin walls parallel to each other.

5. The needle-punched nonwoven fabric forming device according to claim 4, characterized in that: The second air pressure cabin (3) is a rectangular parallelepiped structure.

6. The needle-punched nonwoven fabric forming device according to claim 1, characterized in that: The opposite walls of the first air pressure cabin (2) and the second air pressure cabin (3) are arranged in parallel.

7. The needle-punched nonwoven fabric forming device according to any one of claims 1 to 6, characterized in that: The first steam pipeline and the second steam pipeline are connected to the same air pressure valve; Alternatively, the first steam pipe and the second steam pipe are each connected to a gas pressure valve.

8. The needle-punched nonwoven fabric forming device according to claim 7, characterized in that: The first air pressure chamber (2) is arranged horizontally; The second air pressure cabin (3) is arranged horizontally; The first air pressure cabin (2) is located above the second air pressure cabin (3); The first pressure chamber (2) is connected to a first steam pipe at the peripheral wall; The second air pressure chamber (3) is connected to a second steam pipe at the peripheral wall and / or the bottom wall.

9. A needle-punched nonwoven fabric forming system, characterized in that: At least: The needle-punched nonwoven fabric forming device according to any one of claims 1 to 8; A needle punching plate (1) having needles corresponding to the channels (6); A driving mechanism, used for driving the needle plate (1) to move along the direction of the channel (6), and to be inserted into the channel (6), or into the gap (8), or into the through hole (7); and a steam supply device, wherein the steam supply device is connected to the first steam pipeline and the second steam pipeline respectively through an air pressure valve.

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