Hot air consolidation equipment

Abstract

The utility model provides hot air consolidation equipment which comprises a box body, a hot melting mechanism and a cloth cover cooling mechanism, a cylindrical air guide barrel is arranged in the box body, a feeding and discharging opening is formed in the air guide barrel, a hot melting cavity is formed in the air guide barrel, and a plurality of first through holes are evenly distributed in the air guide barrel; the hot melting mechanism comprises a rotary screen assembly and a heat supply assembly, the rotary screen assembly is arranged in the hot melting cavity, and the heat supply assembly is arranged in the box body and used for providing hot air; the cloth cover cooling mechanism is used for cooling the hot-melted fabric, close to the inclined upper side of the feeding and discharging opening, of the rotary screen assembly; at least two kinds of spun-bonded fabric to be subjected to hot melting are introduced into the hot melting cavity and are attached and wound around the surface of the rotary screen assembly, hot air enters the hot melting cavity after reaching the air guide barrel so as to heat the spun-bonded fabric on the surface of the rotary screen assembly, the fabric is cooled by the cloth cover cooling mechanism above the rotary screen assembly and then is led out, all-directional hot air solidification operation on the fabric is achieved, and the hot air solidification efficiency is improved. The utility model provides hot air consolidation equipment which is simple in structure, high in fusion efficiency and good in fusion effect.

Description

Technical Field

[0001] This utility model relates to the field of thermal fusion technology, and in particular to a hot air consolidation device. Background Technology

[0002] With the rapid development of the automotive industry, construction engineering, decorative materials, and road engineering, the demand for functional nonwoven fabrics is increasing. Nonwoven fabrics are widely used in these fields due to their excellent physical properties, cost advantages, and environmental friendliness. Spunbond technology, as one of the mainstream technologies for nonwoven fabric production, has advantages such as uniform web formation, high strength, and high production efficiency. However, in practical applications, single-material spunbond fabrics often struggle to simultaneously meet multiple performance requirements, including strength, heat resistance, environmental friendliness, and cost control. Therefore, combining two or more spunbond fabrics with different properties to prepare composite materials with multiple performance characteristics has become an important direction in current nonwoven material research and application.

[0003] However, in the existing technology, the composite process of different spunbond fabrics mostly relies on traditional lamination or bonding methods. These methods have problems such as insufficient bonding strength, poor composite uniformity, and complicated operation, which cannot meet production needs. Utility Model Content

[0004] The purpose of this application is to provide a hot air consolidation device to solve the problem of poor composite effect of different spunbond fabrics in the prior art.

[0005] To achieve this objective, the following technical solution is adopted in this application:

[0006] This application provides a hot air consolidation device, which includes a housing, a heat-melting mechanism, and at least one set of fabric cooling mechanisms, wherein:

[0007] The box is equipped with a cylindrical air guide tube, and a hot melt cavity is formed inside the air guide tube. The air guide tube has an inlet and outlet extending in a first direction, and several first through holes are evenly opened on the wall of the air guide tube.

[0008] The hot-melting mechanism includes a cylinder mesh assembly and a heating assembly. The cylinder mesh assembly is rotatably disposed in the hot-melting chamber along its own axis in a first direction. The heating assembly is installed at the bottom of the housing and is configured to heat the air to provide hot air for hot-melting and solidifying at least two spunbond fabrics to be hot-melted.

[0009] The fabric cooling mechanism is located diagonally above the rotary screen assembly and close to the inlet and outlet. The fabric cooling mechanism is configured to cool the fabric that has been heated and melted on the rotary screen assembly.

[0010] At least two types of spunbond fabrics to be heat-melted are introduced into the heat-melting chamber from the bottom of the inlet and outlet and adhered around the surface of the cylinder assembly. Hot air enters the heat-melting chamber through the first through hole after reaching the outer surface of the air guide tube to heat-melt the spunbond fabrics on the surface of the cylinder assembly. After fusion, the fabrics are cooled by the fabric cooling mechanism at an angle above the cylinder assembly near the inlet and outlet and then led out from the top of the inlet and outlet.

[0011] Optionally, the hot air consolidation device includes two sets of fabric cooling mechanisms arranged in parallel along the first direction. Each set of fabric cooling mechanisms includes an air-cooling component, an air supply chamber, and an opening and closing component, wherein:

[0012] The air supply chamber is located diagonally above the circular mesh assembly and close to the inlet and outlet. The air inlet of the air supply chamber is connected to the air cooling assembly. The air cooling assembly is configured to supply cooling air into the air supply chamber. The opening and closing assembly is configured to control the opening and closing of the exhaust end of the air supply chamber. The exhaust end of the air supply chamber is oriented towards the circular mesh assembly.

[0013] Optionally, the portion of the circular mesh assembly corresponding to the fabric cooling mechanism is divided into four cooling zones along the first direction. Each set of fabric cooling mechanisms also includes a baffle plate and two regulating valves. The baffle plate is set in the air supply chamber and divides the corresponding air supply chamber into two independent air supply channels. Each air supply channel corresponds to a cooling zone. Each air supply channel is equipped with a regulating valve, which is configured to regulate the air volume of the corresponding air supply channel.

[0014] Optionally, the chamber is provided with a first hot air zone and a second hot air zone, wherein:

[0015] The air duct is set in the first hot air zone. An internal hot air equalization and heat equalization mechanism is set between the first hot air zone and the second hot air zone. The internal hot air equalization and heat equalization mechanism includes an air equalization plate, which is set at intervals with the air duct along the second direction. The air equalization plate is evenly distributed with second through holes. The air equalization plate is evenly divided into several air adjustment zones. Each air adjustment zone corresponds to the air inlet area on the air duct, and the opening size of the second through hole on each air adjustment zone is adjustable. After the hot air from the heating component enters the second hot air zone, it goes to the air duct of the first hot air zone through the second through hole.

[0016] Optionally, the hot air consolidation device also includes an exhaust assembly, which is spaced apart on both sides of the circular mesh assembly along a first direction. A negative pressure chamber is provided between the exhaust assembly and the circular mesh assembly. Both the exhaust assembly and the circular mesh assembly are connected to the negative pressure chamber. The exhaust assembly is configured to extract air from the negative pressure chamber to create a negative pressure environment in the negative pressure chamber, thereby extracting hot air from the circular mesh assembly.

[0017] Optionally, the exhaust assembly includes a frame and several exhaust fans. The several exhaust fans are arranged on both sides of the circular mesh assembly along a first direction. The frame is arranged outside the housing and is fixedly connected to the several exhaust fans along a second direction. The frame can slide closer to or further away from the housing.

[0018] When the frame slides away from the enclosure, the exhaust fan is simultaneously pulled out of the enclosure; when the frame approaches the enclosure, the exhaust fan is simultaneously installed into the enclosure.

[0019] Optionally, an upper air duct is provided at the top of the box, and a lower air duct is provided at the bottom of the box. The first hot air zone and the second hot air zone are located between the upper air duct and the lower air duct, and hot air enters the second hot air zone through the lower air duct.

[0020] The enclosure has several first movable doors and several second movable doors on the side facing the frame. The first movable doors connect the upper or lower air duct to the outside of the enclosure, and the second movable doors connect the second hot air zone to the outside of the enclosure.

[0021] The enclosure is equipped with a third movable door on both sides along the first direction. The third movable door connects the negative pressure chamber with the outside of the enclosure, and personnel can enter the interior of the enclosure through the first movable door, the second movable door, or the third movable door.

[0022] Optionally, the frame is equipped with a ladder and several maintenance stations, each corresponding to an exhaust fan, and the maintenance stations can be pulled out for maintenance and upkeep of the exhaust fans.

[0023] Optionally, the hot air consolidation equipment also includes two sets of make-up air components and at least two sets of dehumidification components, wherein:

[0024] The air supply assembly includes at least two air supply valves, which are located at the lower ends of both sides of the housing. The air supply valves are opened to allow outside air to enter the housing.

[0025] The dehumidification components are installed on both sides of the upper part of the cabinet. The dehumidification components include a dehumidification fan and a dehumidification duct. The dehumidification fan is connected to one end of the dehumidification duct, and the other end of the dehumidification duct passes through the cabinet and enters the cabinet. The dehumidification fan is configured to draw air from the dehumidification duct to remove moisture from the cabinet.

[0026] Optionally, the circular mesh assembly includes a bracket, a drive assembly, a support assembly, an inner circular mesh, and an outer circular mesh, wherein:

[0027] The bracket is set on the outside of the box, and the fixed end of the drive component is installed on the bracket. The inner and outer circular meshes are set coaxially. The outer circular mesh is a hollow cylinder. The inner circular mesh is close to the inner wall of the outer circular mesh along the circumference. A hot air cavity is formed between the inner and outer circular meshes. Several third through holes are evenly opened on the inner circular mesh, and several honeycomb holes are set on the outer circular mesh.

[0028] The support assembly includes a rotating shaft, several first support members, and several second support members. The rotating shaft is disposed through the housing along the axial direction of the inner circular mesh and is connected to the drive end of the drive assembly. The first support members connect the rotating shaft and the inner circular mesh. The inner circular mesh can rotate relative to the rotating shaft along its axial direction. The outer circular mesh is fixedly connected to the rotating shaft through the second support members. The drive end of the drive assembly is connected to the rotating shaft. The drive assembly is configured to drive the rotating shaft to rotate in order to convey the fabric on the surface of the outer circular mesh.

[0029] Compared with the prior art, the hot air consolidation device proposed in this application has the following advantages:

[0030] 1) By combining the circular mesh assembly, the heating assembly and the fabric cooling mechanism, the hot air consolidation operation of the fabric is realized in all directions, providing a hot air consolidation equipment with simple structure, high fusion efficiency and good fusion effect.

[0031] 2) By setting the air supply chamber diagonally above the circular mesh assembly and close to the inlet and outlet, the fused fabric can be cooled precisely. At the same time, the opening and closing assembly controls the opening and closing of the exhaust end of the air supply chamber, which makes it easy to adjust the use of cooling air according to actual needs, increasing the applicability and flexibility of the fabric cooling mechanism.

[0032] 3) By combining the baffle and regulating valve, different areas can be cooled differently, further precisely controlling the airflow intensity in the cooling area of ​​the circular mesh assembly, improving the cooling effect and the quality of the fused fabric.

[0033] 4) By setting up a uniform air distribution plate and dividing it into multiple air adjustment zones, the size of the second through hole can be flexibly adjusted so that hot air can be delivered to the air guide tube in a controllable manner, thereby achieving more precise temperature control management and enhancing the uniformity of fabric heat fusion.

[0034] 5) The combination of the third through hole on the inner circular mesh and the honeycomb holes on the outer circular mesh improves the uniform distribution and permeability of hot air. At the same time, the hot air chamber helps to heat the fabric on both sides. Combined with the structure of the rotating shaft and drive assembly, the fabric can be efficiently transported and continuously rotated, ensuring the fusion efficiency and fusion effect of the fabric. Attached Figure Description

[0035] To more clearly illustrate and understand the technical solutions in the embodiments of this application, the accompanying drawings used in the background technology and embodiment descriptions of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0036] Figure 1 This is a first-view perspective three-dimensional structural schematic diagram of the hot air consolidation device provided in the embodiments of this application;

[0037] Figure 2 This is a second-view perspective three-dimensional structural schematic diagram of the hot air consolidation device provided in the embodiments of this application;

[0038] Figure 3 This is a first-view cross-sectional schematic diagram of the hot air consolidation device provided in the embodiments of this application;

[0039] Figure 4 This is a second-view cross-sectional schematic diagram of the hot air consolidation device provided in the embodiments of this application;

[0040] Figure 5 This is a three-dimensional structural diagram of the circular mesh assembly of the heating component of the hot air consolidation equipment provided in the embodiments of this application;

[0041] Figure 6 This is a schematic diagram of the installation of the baffle plate and regulating valve of the fabric cooling mechanism of the hot air consolidation equipment provided in the embodiments of this application;

[0042] Figure 7 This is a side view of the opening and closing assembly of the fabric cooling mechanism of the hot air consolidation device provided in the embodiments of this application;

[0043] Figure 8 This is a rear view of the hot air consolidation device provided in the embodiments of this application. Detailed Implementation

[0044] To facilitate understanding of this application, a more complete description of the application will be provided below with reference to the accompanying drawings. Preferred embodiments of the application are shown in the drawings. However, the application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application. It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is referred to as being "connected to" another component, it can be directly connected to the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0045] Please see Figures 1 to 8 As shown in the embodiment of this application, a hot air consolidation device includes a housing 10, a hot-melting mechanism, and at least one set of fabric cooling mechanisms, wherein:

[0046] A cylindrical air guide duct 12 is provided inside the housing 10, and a heat-melting cavity 120 is formed inside the air guide duct 12. An opening is formed on the air guide duct 12 along the first direction ( Figure 1 The inlet and outlet 11 extends in the direction of X, and the air guide duct 12 has several first through holes evenly opened on its cylinder wall.

[0047] The hot-melting mechanism includes a rotary mesh assembly 20 and a heating assembly 30. The rotary mesh assembly 20 is rotatably disposed in the hot-melting chamber 120 along its own axis in a first direction. The heating assembly 30 is installed at the bottom of the housing 10 and is configured to heat the air to provide hot air for hot-melting and solidifying at least two spunbond fabrics to be hot-melted.

[0048] The fabric cooling mechanism is located diagonally above the circular mesh assembly 20 and close to the inlet / outlet 11. The fabric cooling mechanism is configured to cool the fabric that has been heated on the circular mesh assembly 20.

[0049] At least two types of spunbond fabrics to be heat-melted are introduced into the heat-melting chamber 120 from the bottom of the inlet / outlet 11 and adhered to the surface of the rotary screen assembly 20. Hot air is introduced into the heat-melting chamber 120 through the first through hole after reaching the outer surface of the air guide duct 12 to heat-melt the spunbond fabrics on the surface of the rotary screen assembly. After fusion, the fabrics are cooled by the fabric cooling mechanism at an angle above the rotary screen assembly 20 near the inlet / outlet 11 and then led out from the top of the inlet / outlet 11.

[0050] Specifically, a first guide roller 110 and a second guide roller 111 are arranged vertically at the inlet / outlet 11. The first guide roller 110 is located below the second guide roller 111. The fabric is introduced into the hot melt chamber 120 through the upper surface of the first guide roller 110. After hot melting, it is drawn out through the lower surface of the second guide roller 111, thereby increasing the tension of the fabric and ensuring the hot melting effect. At the same time, the fabric is guided into the hot melt chamber to ensure the stability of the fabric melting process.

[0051] By combining the circular mesh assembly 20, the heating assembly 30, and the fabric cooling mechanism, a comprehensive hot air consolidation operation on the fabric is achieved, providing a hot air consolidation device with a simple structure, high fusion efficiency, and good fusion effect.

[0052] In one embodiment, the hot air consolidation device includes two sets of fabric cooling mechanisms arranged side by side along a first direction. Each set of fabric cooling mechanisms includes an air-cooling assembly 40, an air supply chamber 41, and an opening / closing assembly 50, wherein:

[0053] The air supply chamber 41 is located diagonally above the circular mesh assembly 20 and close to the inlet / outlet 11. The air inlet end of the air supply chamber 41 is connected to the air cooling assembly 40. The air cooling assembly 40 is configured to supply cooling air to the air supply chamber 41. The opening and closing assembly 50 is configured to control the opening and closing of the exhaust end of the air supply chamber 41. The exhaust end of the air supply chamber 41 is located facing the circular mesh assembly 20.

[0054] Specifically, each set of fabric cooling mechanisms corresponds to an independent air supply chamber 41, and a partition 410 is provided between adjacent air supply chambers 41. The two air supply chambers 41 are arranged adjacent to each other along the first direction.

[0055] Specifically, the air-cooled assembly 40 includes a cooling fan 41 and a cold air duct 42. The cooling fan 41 is installed on the outer wall of the housing 10. The air outlet of the cooling fan 41 is connected to one end of the cold air duct 42, and the other end of the cold air duct 42 is connected to the air inlet of the air supply chamber 41. The cooling fan 41 is configured to generate cooling air and deliver the cooling air to the air supply chamber 41 through the cold air duct 42.

[0056] Specifically, the opening and closing assembly 50 includes a cylinder 51, a hinge 52, a connecting rod 53, and a baffle 54. The cylinder 51 is rotatably mounted on the outer wall of the housing 10. The driving end of the cylinder 51 is hinged to the first end of the hinge 52, and the second end of the hinge 52 is fixedly connected to the first end of the connecting rod 53. The hinge 52 and the cylinder 51 are located in the same vertical plane and are parallel to the side closest to the housing 10. The connecting rod 53 is rotatably arranged horizontally through the housing 10 and is perpendicular to the vertical plane. The second end of the connecting rod 53 is fixedly connected to the baffle 54. The baffle 54 is rotatably arranged at the air inlet end of the air supply cavity 41 along the axis of the connecting rod 53. The cylinder 51 pushes the hinge 52 to move, synchronously driving the connecting rod 53 to rotate, which in turn synchronously drives the baffle 54 to rotate at the air inlet end of the air supply cavity 41, thereby gradually opening or closing the air inlet end of the air supply cavity 41.

[0057] Specifically, a mesh belt is provided on the outside of the rotary screen assembly. The fabric adheres to the mesh belt as it runs inside the box. The box is also equipped with a correction and tensioning mechanism, which is used to adjust the mesh belt to prevent the fabric from shifting while ensuring that the fabric tension meets production requirements.

[0058] Specifically, the box is equipped with a mesh belt cooling mechanism, which is used to cool the mesh belt and the fabric on the mesh belt.

[0059] By positioning the air supply chamber 41 diagonally above the circular mesh assembly 20 and close to the inlet / outlet 11, the fused fabric can be precisely cooled. At the same time, the opening and closing assembly 50 controls the opening and closing of the exhaust end of the air supply chamber 41, making it easy to adjust the use of cooling air according to actual needs, thus increasing the applicability and flexibility of the fabric cooling mechanism.

[0060] In one embodiment, the portion of the circular mesh assembly 20 corresponding to the fabric cooling mechanism is divided into four cooling areas along a first direction. Each set of fabric cooling mechanisms further includes a baffle plate 60 and two regulating valves 61. The baffle plate 60 is disposed in the air supply chamber 41 and divides the corresponding air supply chamber 41 into two independent air supply channels 411. Each air supply channel 411 corresponds to a cooling area. Each air supply channel 411 is equipped with a regulating valve 61, which is configured to regulate the air volume of the corresponding air supply channel 411.

[0061] By combining the baffle plate 60 and the regulating valve 61, differentiated cooling can be performed for different cooling areas, further precisely controlling the airflow intensity in the cooling area of ​​the circular mesh assembly 20, thereby improving the cooling effect and the quality of the fused fabric.

[0062] In one embodiment, the housing 10 is provided with a first hot air zone 13 and a second hot air zone 14, wherein:

[0063] The air duct 12 is disposed within the first hot air zone 13. An internal hot air equalization and heat equalization mechanism is disposed between the first hot air zone 13 and the second hot air zone 14. The internal hot air equalization and heat equalization mechanism includes an air equalization plate 15, which is positioned along the second direction ( Figure 1 The air distribution plate 15 is spaced apart from the air guide 12 in the Y direction. The air distribution plate 15 is evenly distributed with second through holes. The air distribution plate 15 is evenly divided into several air adjustment zones. Each air adjustment zone corresponds to the air inlet area on the air guide 12, and the opening size of the second through hole on each air adjustment zone is adjustable. After the hot air from the heating component 30 enters the second hot air zone 14, it goes through the second through hole to the air guide 12 of the first hot air zone 13.

[0064] Specifically, the air distribution plate 15 is divided into twelve air adjustment zones of the same size, and each air adjustment zone can be adjusted independently.

[0065] Specifically, the first direction is perpendicular to the second direction.

[0066] By setting up the air distribution plate 15 and dividing it into multiple air adjustment zones, the size of the second through hole can be flexibly adjusted so that hot air can be delivered to the air guide duct 12 in a controllable manner, thereby achieving refined temperature control management and enhancing the uniformity of fabric heat fusion.

[0067] In one embodiment, the hot air consolidation device further includes an exhaust assembly 70, which is spaced apart on both sides of the circular mesh assembly 20 along a first direction. A negative pressure chamber is provided between the exhaust assembly 70 and the circular mesh assembly 20. Both the exhaust assembly 70 and the circular mesh assembly 20 are connected to the negative pressure chamber. The exhaust assembly 70 is configured to extract air from the negative pressure chamber to create a negative pressure environment in the negative pressure chamber, thereby extracting hot air from the circular mesh assembly 20.

[0068] The exhaust assembly 70 creates negative pressure on both sides of the rotary mesh assembly 20, which promotes the flow of hot air to penetrate the spunbond fabric, improves the fusion effect, and facilitates the timely discharge of high-temperature gas, thus improving the internal environment and product performance.

[0069] In one embodiment, the exhaust assembly 70 includes a frame 71 and a plurality of exhaust fans 72. The plurality of exhaust fans 72 are arranged on both sides of the circular mesh assembly 20 along a first direction. The frame 71 is arranged outside the housing 10 and is fixedly connected to the plurality of exhaust fans 72 along a second direction. The frame 71 can slide closer to or further away from the housing 10.

[0070] When the frame 71 slides away from the housing 10, the exhaust fan 72 is simultaneously pulled away from the housing 10; when the frame 71 approaches the housing 10, the exhaust fan 72 is simultaneously installed into the housing 10.

[0071] Specifically, the bottom of the frame 71 is provided with rollers, and a guide rail is fixedly provided on the ground. The guide rail extends along the second direction, and the rollers are slidably provided on the guide rail to drive the frame 71 to move closer to or away from the housing 10 along the second direction. Preferably, the bottom of the frame 71 is provided with four sets of rollers, and four sets of guide rails are fixedly provided on the ground. The guide rails extend along the second direction.

[0072] Specifically, the bottom of the frame 71 has several first through holes, and the guide rail has several second through holes. When the first through holes and the second through holes correspond, the frame 71 can be fixed by bolt assembly. Removing the bolt assembly allows the roller to fall on the guide rail to achieve sliding.

[0073] By adopting a movable structure design with a sliding frame 71 and a fan 72, the fan 72 is easier to assemble and disassemble, effectively shortening maintenance time and improving the overall operational stability and service life of the equipment.

[0074] In one embodiment, an upper air duct 16 is provided at the top of the housing 10, and a lower air duct 17 is provided at the bottom of the housing 10. The first hot air zone 13 and the second hot air zone 14 are located between the upper air duct 16 and the lower air duct 17, and hot air enters the second hot air zone 14 through the lower air duct 17.

[0075] The enclosure 10 has several first movable doors and several second movable doors 140 on the side facing the frame 71. The first movable doors connect the upper air duct 16 or the lower air duct 17 to the outside of the enclosure 10, and the second movable doors 140 connect the second hot air zone 14 to the outside of the enclosure 10.

[0076] The housing 10 is provided with a third movable door 18 on both sides along the first direction. The third movable door 18 connects the negative pressure chamber with the outside of the housing 10. Personnel can enter the inside of the housing 10 through the first movable door, the second movable door 140, or the third movable door 18.

[0077] Specifically, the first movable door includes an upwind door 160 and a downwind door 170. The upwind door 160 is connected to the upwind passage 16, and the downwind door 170 is connected to the downwind passage 17.

[0078] Specifically, a ventilation plate is installed between the downdraft duct 17 and the second hot air zone 14, allowing gas to pass through.

[0079] Specifically, the heating component 30 includes a burner and a hot air duct. The air outlet of the burner is connected to one end of the hot air duct, and the other end of the hot air duct is connected to the downdraft duct 17.

[0080] By strategically designing movable doors, it is convenient for personnel to enter different areas inside the enclosure 10 to perform equipment maintenance, repair, and other operations, thereby improving the ease of use and safety of the equipment.

[0081] In one embodiment, the frame 71 is provided with a ladder 710 and a plurality of maintenance benches 711, each maintenance bench 711 corresponding to an exhaust fan 72, and the maintenance benches 711 can be pulled out to maintain and service the exhaust fan 72.

[0082] Specifically, the exhaust fan 72 is fixedly installed on the maintenance table 711.

[0083] The configuration of ladder 710 and multiple maintenance stations 711 allows operators to safely access each exhaust fan 72, improving maintenance efficiency and operational safety, and is suitable for high-frequency maintenance needs in industrial scenarios.

[0084] In one embodiment, the hot air consolidation device further includes two sets of air supply components 80 and two sets of dehumidification components 90, wherein:

[0085] The air supply assembly 80 includes at least one air supply valve, which is located at the lower end of both sides of the housing 10. The air supply valve is opened to allow outside air to enter the housing 10.

[0086] The dehumidification assembly 90 is installed on both sides of the upper end of the housing 10. The dehumidification assembly 90 includes a dehumidification fan 91 and a dehumidification pipe 92. The dehumidification fan 91 is connected to one end of the dehumidification pipe 92, and the other end of the dehumidification pipe 92 passes through the housing 10 and enters the interior of the housing 10. The dehumidification fan 91 is configured to draw air from the dehumidification pipe 92 to extract moisture from the housing 10.

[0087] Specifically, the make-up air assembly 80 includes two make-up air valves.

[0088] The combination of the air supply component 80 and the dehumidification component 90 ensures a dry and stable internal hot air environment, preventing moisture accumulation from affecting the compounding effect or causing equipment damage.

[0089] In one embodiment, the circular mesh assembly 20 includes a bracket 21, a drive assembly 22, a support assembly, an inner circular mesh 23, and an outer circular mesh 24, wherein:

[0090] The bracket 21 is set on the outside of the housing 10. The fixed end of the drive assembly 22 is installed on the bracket 21. The inner circular mesh 23 and the outer circular mesh 24 are coaxially arranged. The outer circular mesh 24 is a hollow cylinder. The inner circular mesh 23 is close to the inner wall of the outer circular mesh 24 along the circumferential direction. A hot air cavity is formed between the inner circular mesh 23 and the outer circular mesh 24. Several third through holes are evenly opened on the inner circular mesh 23. Several honeycomb holes are provided on the outer circular mesh 24.

[0091] The support assembly includes a rotating shaft 25, several first support members 26, and several second support members 27. The rotating shaft 25 is disposed through the housing 10 along the axial direction of the inner circular mesh 23 and is connected to the drive end of the drive assembly 22. The first support members 26 connect the rotating shaft 25 and the inner circular mesh 23. The inner circular mesh 23 rotates on the rotating shaft 25 along its axial direction. The outer circular mesh 24 is fixedly connected to the rotating shaft 25 through the second support members 27. The drive end of the drive assembly 22 is connected to the rotating shaft 25. The drive assembly 22 is configured to drive the rotating shaft 25 to rotate, thereby driving the outer circular mesh 24 to rotate and realize the conveying of the fabric on the surface of the outer circular mesh 24.

[0092] Specifically, the circular mesh assembly 20 also includes multiple adjusting plates and multiple fixing members. The multiple adjusting plates are spaced apart along the first direction and are set against the inner circular mesh 23 along the circumferential direction. Several fourth through holes corresponding to the third through holes are opened on the adjusting plates. The fixing members extend along the length direction of the inner circular mesh 23 and are detachably installed on the inner circular mesh 23. The adjusting plates are located between the inner circular mesh 23 and the fixing members. The adjusting plates rotate to change the position of the fourth through holes and the third through holes, so that the adjusting plates interfere with the third through holes, thereby changing the rate of heat dissipation in the hot air chamber.

[0093] Specifically, the drive assembly 22 uses a motor in conjunction with a synchronous belt drive. The motor drives the synchronous belt to rotate, thereby driving the rotating shaft 25 connected to it to rotate.

[0094] Specifically, a bearing 28 is provided between the first support member 26 and the rotating shaft 25. The bearing 28 is mounted on the rotating shaft 25. The first support member 26 is fixedly connected to the outer wall of the bearing 28 and the inner circular mesh 23 so that the rotating shaft 25 can rotate relative to the inner circular mesh 23.

[0095] The combination of the third through hole on the inner circular mesh 23 and the honeycomb holes on the outer circular mesh 24 improves the uniform distribution and permeability of hot air. At the same time, the hot air chamber helps to heat the fabric on both sides. The structure of the rotating shaft 25 and the drive assembly 22 enables efficient conveying and continuous rotation of the fabric, ensuring the fusion efficiency and fusion effect of the fabric.

[0096] The above embodiments merely illustrate the basic principles and characteristics of this application. This application is not limited to the above examples. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A hot-air fixing apparatus characterized by comprising: The hot air fixing device comprises a box, a hot melting mechanism and at least one cloth surface cooling mechanism, wherein: The box is provided with a cylindrical air duct inside, a hot melting cavity is formed in the air duct, an inlet and outlet port extending in a first direction is opened on the air duct, and a plurality of first through holes are uniformly opened on the wall of the air duct; The hot melting mechanism comprises a rotary screen assembly and a heat supply assembly, the rotary screen assembly is arranged in the hot melting cavity along the first direction and can rotate along its own axis, the heat supply assembly is installed on the cloth outlet side of the box, and the heat supply assembly is configured to heat air to provide hot air for hot melting and fixing of at least two spunbond fabrics to be hot melted; The cloth surface cooling mechanism is arranged obliquely above the rotary screen assembly and close to the inlet and outlet port, and is configured to cool the hot-melted fabric on the rotary screen assembly; At least two spunbond fabrics to be hot melted are introduced into the hot melting cavity from the bottom of the inlet and outlet port and adhere to the surface around the rotary screen assembly, hot air enters the hot melting cavity from the first through holes on the outer surface of the air duct after the hot air reaches the outer surface of the air duct to hot melt the spunbond fabric on the surface of the rotary screen assembly, and the hot-melted fabric is cooled by the cloth surface cooling mechanism obliquely above the rotary screen assembly close to the inlet and outlet port and then introduced from the top of the inlet and outlet port.

2. The through-air bonding apparatus according to claim 1, characterized by The hot air fixing device comprises two sets of cloth surface cooling mechanisms arranged side by side in the first direction, each set of the cloth surface cooling mechanism comprises an air cooling assembly, an air supply cavity and an opening and closing assembly, wherein: The air supply cavity is arranged obliquely above the rotary screen assembly and close to the inlet and outlet port, the air inlet end of the air supply cavity is communicated with the air cooling assembly, the air cooling assembly is configured to supply cooling air to the air supply cavity, the opening and closing assembly is configured to control the opening and closing of the air outlet end of the air supply cavity, and the air outlet end of the air supply cavity is arranged towards the rotary screen assembly.

3. The through-air bonding apparatus according to claim 2, characterized by The part of the rotary screen assembly corresponding to the cloth surface cooling mechanism is divided into four cooling areas along the first direction, and each set of the cloth surface cooling mechanism further comprises a wind shield and two adjusting valves, wherein: the wind shield is arranged in the air supply cavity and divides the corresponding air supply cavity into two independent air supply channels, each air supply channel corresponds to one cooling area, and one adjusting valve is installed on each air supply channel, and the adjusting valve is configured to adjust the air volume of the corresponding air supply channel.

4. The through-air bonding apparatus according to claim 1, characterized by The box is provided with a first hot air zone and a second hot air zone, wherein: The air duct is arranged in the first hot air zone, and an internal hot air uniform distribution and heat uniform distribution mechanism is arranged between the first hot air zone and the second hot air zone, the internal hot air uniform distribution and heat uniform distribution mechanism comprises a uniform distribution plate, the uniform distribution plate is arranged in the second direction and is spaced apart from the air duct, the uniform distribution plate is uniformly provided with second through holes, the uniform distribution plate is uniformly divided into a plurality of air distribution areas, each air distribution area corresponds to an air inlet area on the air duct, and the opening size of the second through holes on each air distribution area is adjustable, and the hot air of the heat supply assembly enters the second hot air zone and then enters the air duct in the first hot air zone through the second through holes.

5. The through-air bonding apparatus according to claim 4, wherein The hot air fixing device further comprises an air extraction assembly arranged at both sides of the rotary screen assembly along the first direction, and a negative pressure cavity is arranged between the air extraction assembly and the rotary screen assembly, the air extraction assembly and the rotary screen assembly are in communication with the negative pressure cavity, the air extraction assembly is configured to extract air in the negative pressure cavity to form a negative pressure environment in the negative pressure cavity, and then extract hot air in the rotary screen assembly.

6. The through-air bonding apparatus of claim 5, wherein The air extraction assembly comprises a rack and a plurality of air extraction fans, the plurality of air extraction fans are arranged at both sides of the rotary screen assembly along the first direction, the rack is arranged outside the box and fixedly connected with the plurality of air extraction fans along the second direction, and the rack is slidably close to or away from the box; When the rack slides away from the box, the air extraction fans are synchronously extracted from the box, and when the rack is close to the box, the air extraction fans are synchronously installed into the box.

7. The through-air bonding apparatus according to claim 6, characterized by The top end of the box is provided with an upper air duct, the bottom end of the box is provided with a lower air duct, the first hot air zone and the second hot air zone are located between the upper air duct and the lower air duct, and hot air enters the second hot air zone from the lower air duct; The side of the box facing the rack is provided with a plurality of first movable doors and a plurality of second movable doors, the first movable doors are in communication with the upper air duct or the lower air duct and the outside of the box, and the second movable doors are in communication with the second hot air zone and the outside of the box; The box is provided with a third movable door on both sides along the first direction, the third movable door is in communication with the negative pressure cavity and the outside of the box, and a person can enter the inside of the box through the first movable door, the second movable door or the third movable door.

8. The through-air bonding apparatus of claim 6, wherein, The rack is provided with a ladder and a plurality of maintenance tables, each maintenance table corresponds to one air extraction fan, and the maintenance table can be extracted to maintain and maintain the air extraction fan.

9. The through-air bonding apparatus of claim 5, wherein, The hot air fixing device further comprises two groups of air supplement assemblies and two groups of moisture removal assemblies, wherein: The air supplement assembly comprises at least one air supplement valve, the air supplement valve is arranged at the lower end of the box on both sides, and the air supplement valve is opened to allow external air to enter the box; The moisture removal assembly is installed on both sides of the upper end of the box, the moisture removal assembly comprises a moisture removal fan and a moisture removal pipeline, the moisture removal fan is connected with one end of the moisture removal pipeline, the other end of the moisture removal pipeline penetrates through the box and enters the inside of the box, and the moisture removal fan is configured to extract air in the moisture removal pipeline to extract moisture in the box.

10. The through-air bonded fabric according to Claim 1, wherein, The rotary screen assembly comprises a support, a driving assembly, a supporting assembly, an inner rotary screen and an outer rotary screen, wherein: The support is arranged outside the box, the fixed end of the driving assembly is installed on the support, the inner rotary screen and the outer rotary screen are coaxially arranged, the outer rotary screen is in a hollow cylindrical shape, the inner rotary screen is close to the inner wall of the outer rotary screen in the circumferential direction, a hot air cavity is formed between the inner rotary screen and the outer rotary screen, a plurality of third through holes are uniformly arranged on the inner rotary screen, and a plurality of honeycomb holes are arranged on the outer rotary screen; The support assembly comprises a rotating shaft, a plurality of first support members and a plurality of second support members, the rotating shaft is arranged through the box along the axial direction of the inner circular screen and is connected with the driving end of the driving assembly, the first support members connect the rotating shaft and the inner circular screen, the inner circular screen can rotate along the axial direction thereof relative to the rotating shaft, the outer circular screen is fixedly connected with the rotating shaft through the second support members, the driving end of the driving assembly is connected with the rotating shaft, and the driving assembly is configured to drive the rotating shaft to rotate, so as to drive the outer circular screen to rotate and realize conveying of the fabric on the surface of the outer circular screen.

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