A meltblown nonwoven fabric drying device that is easy to pull

Abstract

This utility model provides a meltblown nonwoven fabric drying device that facilitates traction, relating to the field of nonwoven fabric technology. It includes a drying chamber and further includes: a transfer roller, which is rotatably installed inside the drying chamber; and a drive assembly, comprising a first drive assembly and a second drive assembly. The first and second drive assemblies drive the transfer pipes on both sides of the drying chamber to rotate and perform a reverse pulling action on the nonwoven fabric, thereby achieving electronically controlled tension adjustment and rapid traction and transfer of the nonwoven fabric. The purpose of this technical solution is to utilize multiple active and driven rollers to guide the movement of the nonwoven fabric. Pre-dehydration is achieved through front-end pressing, thermal drying is completed in the middle drying zone, and the fabric surface flatness is ensured at the end through an electronically controlled tension adjustment device. Combined with an air-cushion type driven roller, dynamic adjustment of the gap and micro-control of tension can be achieved, ensuring stable transfer and drying efficiency.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric technology, and in particular to a meltblown nonwoven fabric drying device that is easy to pull. Background Technology

[0002] Nonwoven fabric traction drying refers to the process in which the formed fiber web is conveyed to the drying unit at a constant speed through a traction device during the nonwoven fabric production process. It is then dried efficiently and uniformly using methods such as hot air circulation or infrared heating to remove residual moisture, stabilize the fabric structure, and improve the product strength and appearance quality. This process is usually used in conjunction with web-forming technologies such as hydroentangling, hot rolling, and meltblowing. It is an important link in achieving continuous and automated production and plays a key role in improving the performance of nonwoven fabric products and enhancing their adaptability to subsequent processing. It is widely used in many fields such as medical, filtration, and packaging.

[0003] In the drying process of nonwoven fabric, it is usually necessary to set up a drying box to heat and dry the continuously conveyed nonwoven fabric. However, due to the unstable tension control between the conveying rollers in the drying box, especially under the condition of temperature change or fabric speed fluctuation, the nonwoven fabric is prone to uneven stretching or local relaxation during high-speed operation, resulting in wrinkles, bulges or even deviation. This not only affects the surface smoothness and drying effect of the nonwoven fabric, but may also cause fabric jamming, breakage and other faults. Utility Model Content

[0004] The purpose of this invention is to solve the problem of unstable tension control during nonwoven fabric transmission in the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a meltblown nonwoven fabric drying device for easy traction, comprising a drying box, and further comprising: a transmission roller, wherein the transmission roller is rotatably installed inside the drying box, and when the transmission roller rotates, it is used to drive and guide the nonwoven fabric to perform a transmission action inside the drying box, and the transmission roller is provided with multiple rollers; a driving assembly, wherein the driving assembly comprises a first driving assembly and a second driving assembly, the first driving assembly and the second driving assembly are used to drive the transmission pipes on both sides of the drying box to rotate and perform a reverse pulling action on the nonwoven fabric, thereby realizing the tension electronic control adjustment and rapid traction transmission action of the nonwoven fabric.

[0006] In at least some embodiments, the transfer roller includes a first active roller, and there are two first active rollers. A crushing gap is formed between the two first active rollers rotatably installed inside the drying chamber for squeezing out the moisture inside the nonwoven fabric and performing a drying pretreatment action. The first active roller is driven by the first driving component, and the first driving component and the second driving component have the same structure.

[0007] In at least some embodiments, the transfer roller further includes two second active rollers rotatably mounted at the outlet of the drying chamber, the second active rollers being driven by the second drive assembly to perform forward and reverse rotation.

[0008] In at least some embodiments, the first drive assembly includes a support base fixed to the outside of the drying chamber, a motor fixedly installed inside the support base, a first gear fixedly installed at the output end of the motor meshing with a second gear rotatably installed on the outer wall of the drying chamber, and two first drive rollers respectively passing through the outer wall of the drying chamber and fixedly connected to the first gear and the second gear.

[0009] In at least some embodiments, the transfer roller further includes three driven rollers, which are arranged alternately inside the drying chamber to guide the nonwoven fabric.

[0010] In at least some embodiments, the transfer roller includes a roller body, which is hollow. The roller body, which is rotatably installed inside the drying chamber, is rotatably connected to an air inlet seat fixed outside the drying chamber. The air inlet seat is used to connect to an air source. An annular airbag is fixedly installed on the outside of the roller body. A transfer channel communicating with the annular airbag is opened on the outer wall of the roller body. The annular airbag expands under the control of the air source.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] In this invention, the combination of pre-compression, electronic tension control, multi-point guidance, and pneumatic adjustment solves the problems of wrinkles, deviation, and tension fluctuations in traditional meltblown nonwoven fabrics during the drying and transmission process.

[0013] First, the first active roller's pressing function achieves pre-drying dehydration, reducing energy consumption. Second, the counter-pulling cooperation of the first and second drive components ensures controllable and adjustable fabric tension during transmission, effectively preventing fabric slippage or breakage. Furthermore, the driven roller incorporates a pneumatic expansion adjustment structure, ensuring stable fabric guidance while providing dynamic control over the pressing gap and tension, enhancing the device's adaptability and stability to fabric thickness variations. The entire system is compact, responsive, and highly automated in tension adjustment, significantly improving fabric drying uniformity and finished product quality while reducing manual intervention and optimizing the overall production line's operating efficiency. Attached Figure Description

[0014] Figure 1 A three-dimensional schematic diagram of the overall structure of a meltblown nonwoven fabric drying device that is easy to pull is provided for this utility model.

[0015] Figure 2This utility model provides a three-dimensional structural diagram of the interior of the drying chamber in a meltblown nonwoven fabric drying device that facilitates traction.

[0016] Figure 3 This utility model provides a three-dimensional structural diagram of the first drive component in a meltblown nonwoven fabric drying device that is easy to pull.

[0017] Figure 4 This invention presents a three-dimensional schematic diagram of the cross-sectional structure of the annular airbag in a meltblown nonwoven fabric drying device that facilitates traction.

[0018] Legend: 1. Drying oven; 2. First drive assembly; 3. Second drive assembly; 4. First driving roller; 5. Driven roller; 6. Second driving roller; 7. Crushing gap; 8. Air inlet seat;

[0019] 201. Support base; 202. Motor; 203. First gear; 204. Second gear;

[0020] 401. Roller body; 402. Conveying channel; 403. Annular airbag. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Implementation examples, based on Figures 1-4 As shown in the figure, the present invention provides a meltblown nonwoven fabric drying device that is easy to pull, including a drying box 1 and a transmission roller. The transmission roller is rotatably installed inside the drying box 1. When the transmission roller rotates, it is used to drive and guide the nonwoven fabric to perform a transmission action inside the drying box 1. Multiple transmission rollers are provided. The meltblown nonwoven fabric is guided and transported by multiple transmission rollers provided inside the drying box 1. The transmission rollers are arranged in sequence and can rotate synchronously or in segments. After the nonwoven fabric enters the drying box 1, it is driven by the transmission roller to move continuously along a preset path inside the drying box 1. At the same time, the drying box 1 is provided with a hot air circulation system or an infrared heating module to uniformly heat and dry the nonwoven fabric during the transmission process.

[0024] The drive assembly, designed to precisely adjust the fabric tension, includes a first drive assembly 2 and a second drive assembly 3. The first drive assembly 2 and the second drive assembly 3 drive the transmission tubes on both sides of the drying chamber 1 to rotate and perform a reverse pulling action on the nonwoven fabric. This achieves electronically controlled tension adjustment and rapid traction transmission of the nonwoven fabric. Through the guiding direction of the first drive assembly 2 and the second drive assembly 3, an active pulling or relaxing action is formed on the nonwoven fabric, achieving dynamic electronically controlled adjustment of the fabric tension. This avoids wrinkles, slippage, or unstable transmission caused by tension fluctuations, thereby ensuring the smoothness, stability, and uniformity of the meltblown nonwoven fabric during high-temperature drying, and improving overall production efficiency and product quality.

[0025] In this embodiment, the conveying roller includes a first active roller 4. There are two first active rollers 4, which are rotatably installed inside the drying chamber 1. A pressing gap 7 is formed between the two first active rollers 4, which is used to squeeze the moisture inside the non-woven fabric and perform a pre-drying treatment. In actual operation, the meltblown non-woven fabric entering the drying chamber 1 is first pre-treated by the two first active rollers 4 arranged inside the drying chamber 1. A pressing gap 7 of a certain width is set between the two first active rollers 4. They rotate synchronously under the drive of the first drive component 2 and press the non-woven fabric through mechanical extrusion, thereby effectively squeezing out some of the moisture contained in the fabric, playing a pre-dehydration role before drying, reducing subsequent heat energy consumption, and improving the overall drying efficiency.

[0026] Subsequently, the nonwoven fabric continues to be conveyed forward along multiple conveyor rollers and is dried by hot air or infrared heating inside the drying chamber 1. During this process, the nonwoven fabric is stably guided by multiple conveyor rollers to ensure that it runs smoothly and the fabric tension is moderate, thus avoiding problems such as wrinkles and deviation caused by uneven tension.

[0027] The first active roller 4 is driven by the first driving component 2, and the first driving component 2 and the second driving component 3 have the same structure. The transmission roller also includes two second active rollers 6 rotatably installed at the outlet of the drying box 1. The second active rollers 6 are driven by the second driving component 3 to perform forward and reverse rotation. When the nonwoven fabric is transmitted to the outlet position of the drying box 1, the two second active rollers 6 located there perform end traction. The second active rollers 6 are controlled by the second driving component 3 and can realize synchronous forward rotation or relative reverse rotation. By precisely controlling the roller speed and direction changes, the tension of the nonwoven fabric can be further electronically controlled to improve the output speed and fabric stability, while avoiding fabric piling or tearing caused by differences in fabric speed, thus realizing integrated and efficient collaborative operation of drying and tension control.

[0028] In this embodiment, the aim is to achieve stable driving and tension regulation control of the first active roller 4;

[0029] The first drive assembly 2 includes a support base 201 fixed to the outside of the drying chamber 1. A motor 202 is fixedly installed inside the support base 201. A first gear 203 fixedly installed at the output end of the motor 202 meshes with a second gear 204 rotatably installed on the outer wall of the drying chamber 1. Two first drive rollers 4 pass through the outer wall of the drying chamber 1 and are fixedly connected to the first gear 203 and the second gear 204, respectively. The motor 202 is fixedly installed inside the support base 201 outside the drying chamber 1. It drives the fixedly installed first gear 203 to rotate at high speed through its output end. The first gear 203 meshes with the second gear 204 installed on the outer wall of the drying chamber 1 to achieve reliable power transmission and angular velocity conversion.

[0030] At the same time, the two first active rollers 4 pass through the outer wall of the drying box 1 and are connected to the first gear 203 and the second gear 204 to realize synchronous driving of the two active rollers, so that they can rotate in coordination under meshing. By adjusting the speed of the motor 202, the rolling speed and force between the active rollers can be controlled, thereby accurately completing the initial rolling and pre-dehydration of the nonwoven fabric, ensuring the uniformity of the fabric tension, and providing a stable and controllable fabric tension foundation for subsequent drying and traction.

[0031] In this embodiment, not only is efficient guiding and drying of nonwoven fabric coordinated, but also the driven roller 5 assembly with pneumatic adjustment function is set up to achieve precise control of the rolling gap 7 and the transmission tension.

[0032] The transfer roller also includes driven rollers 5, of which there are three. The three driven rollers 5 are staggered inside the drying chamber 1 to guide the nonwoven fabric. This is used to guide the nonwoven fabric at multiple points in the transfer path, thereby enhancing its running stability and fit. The transfer roller includes a roller body 401, which is hollow. The roller body 401, which is rotatably installed inside the drying chamber 1, is rotatably connected to an air inlet seat 8 fixed outside the drying chamber 1. The air inlet seat 8 is used to connect to an air source. An annular airbag 403 is fixedly installed on the outside of the roller body 401. A transfer channel 402, which communicates with the annular airbag 403, is opened on the outer wall of the roller body 401. The annular airbag 403 expands under the control of the air source.

[0033] Users can control the air supply to adjust the expansion of the annular airbag 403, causing it to bulge outwards or retract, thereby changing the actual contact distance between the driven roller 5 and the adjacent driving roller, and achieving dynamic adjustment of the size of the compaction gap 7. When the fabric tension changes or the thickness is inconsistent, the airbag pressure can also be finely adjusted to apply slight cushioning support to the fabric surface, thus achieving the dual purpose of tension compensation and conveying stability adjustment, greatly improving the adaptability of fabric transmission and the consistency of the finished product during the drying process.

[0034] The working principle of this utility model is as follows: multiple transmission rollers set inside the drying box 1 are used to guide and continuously transport the meltblown nonwoven fabric. The multiple transmission rollers can rotate synchronously or in segments to ensure that the nonwoven fabric moves smoothly in a high-temperature environment.

[0035] The two first active rollers 4, located at the front end of the drying chamber 1, form a pressing gap 7 under the drive of the first drive assembly 2, pressing the nonwoven fabric entering the device to pre-dehydrate it and improve drying efficiency. During the transport process, the fabric passes through a drying zone composed of hot air circulation or infrared heating modules, achieving uniform heating and drying.

[0036] The three driven rollers 5 arranged in an alternating manner inside the drying chamber 1 have a guiding function. The hollow structure of the roller body 401 is connected to the air inlet seat 8, and the external ring airbag 403 is provided. By controlling the air pressure to change the gap with the adjacent rollers, the tension can be finely adjusted and buffered to adapt to fabrics of different thicknesses. The two second active rollers 6 at the discharge end can be pulled in both directions under the control of the second drive component 3 to realize end tension adjustment and transmission stability control, thus constructing an electronically controlled tension adjustment closed loop from feeding, drying to discharge, ensuring the flatness of the fabric surface and the consistency of drying.

[0037] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A meltblown nonwoven fabric drying device for easy traction, comprising a drying chamber (1), characterized in that, Also includes: The transfer roller is rotatably installed inside the drying box (1). When the transfer roller rotates, it is used to drive the nonwoven fabric to perform a transfer action inside the drying box (1). Multiple transfer rollers are provided. The driving component includes a first driving component (2) and a second driving component (3). The first driving component (2) and the second driving component (3) are used to drive the transmission pipes on both sides of the drying box (1) to rotate and pull the nonwoven fabric in the opposite direction, so as to realize the tension control adjustment and rapid traction transmission of the nonwoven fabric.

2. The meltblown nonwoven fabric drying device for easy traction according to claim 1, characterized in that: The transmission roller includes a first active roller (4), and there are two first active rollers (4). A pressing gap (7) is formed between the two first active rollers (4) rotatably installed inside the drying box (1) to squeeze the moisture inside the non-woven fabric and perform a drying pretreatment action. The first active roller (4) is driven by the first driving component (2), and the first driving component (2) and the second driving component (3) have the same structure.

3. The meltblown nonwoven fabric drying device for easy traction according to claim 1, characterized in that: The transfer roller also includes two second active rollers (6) rotatably installed at the outlet of the drying box (1), the second active rollers (6) being driven by the second drive assembly (3) to perform forward and reverse rotation.

4. The meltblown nonwoven fabric drying device for easy traction according to claim 2, characterized in that: The first drive assembly (2) includes a support base (201) fixed outside the drying box (1). A motor (202) is fixedly installed inside the support base (201). A first gear (203) fixedly installed at the output end of the motor (202) meshes with a second gear (204) rotatably installed on the outer wall of the drying box (1). Two first drive rollers (4) pass through the outer wall of the drying box (1) and are fixedly connected to the first gear (203) and the second gear (204).

5. The meltblown nonwoven fabric drying device for easy traction according to claim 1, characterized in that: The transmission roller also includes a driven roller (5), and there are three driven rollers (5). The three driven rollers (5) are staggered inside the drying box (1) to guide the nonwoven fabric.

6. The meltblown nonwoven fabric drying device for easy traction according to claim 1, characterized in that: The transmission roller includes a roller body (401), which is hollow. The roller body (401) is rotatably installed inside the drying box (1) and is rotatably connected to an air inlet seat (8) fixed outside the drying box (1). The air inlet seat (8) is used to connect to an air source. An annular air bag (403) is fixedly installed on the outside of the roller body (401). A transmission channel (402) communicating with the annular air bag (403) is opened on the outer wall of the roller body (401). The annular air bag (403) expands under the control of the air source.

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