Spreading device for non-woven fabric
The design of the seamless expansion device enables online welding, solving the complexity of equipment modification, ensuring a seamless production process, ensuring the welding quality of nonwoven fabrics, and simplifying the difficulties of equipment modification.
Patent Information
- Application Number
- CN202423041804.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2034-12-10
AI Technical Summary
When ultra-wide widths are required, existing nonwoven roll materials often require on-site sewing or heat welding, which makes them inconvenient to use and complicated to modify equipment, making it difficult to achieve efficient width expansion.
Design a nonwoven fabric expansion device that provides nonwoven fabric through first and second unwinding rollers, applies hot melt adhesive to the edges of the two layers of nonwoven fabric using a melt glue machine, and then rolls it up after pressing with a pressure roller group to achieve online welding.
It enables online welding of nonwoven fabrics, ensuring welding quality, simplifying the production of ultra-wide nonwoven fabrics, avoiding the inconvenience of on-site sewing, and eliminating the need for large-scale equipment modifications.
Smart Images
Figure CN223864531U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a cloth's expanding device, especially non -woven fabric's expanding device. BACKGROUND
[0002] In the field of agriculture, non-woven fabric can be used as the protective cloth of crop, seedling cloth, irrigation cloth and thermal curtain etc. In the field of industry, non-woven fabric can be used as filter material, cladding cloth, fiber layer of waterproof roll material etc. The non-woven fabric roll material on the market is mostly 1.5 meters~2 meters width. In specific use scene, often need the non-woven fabric roll material of super wide width. Therefore, often need to sew the conventional non-woven fabric. Usually, cutting or folding is the consumer of non-woven fabric in the use process, and sewing. Such as using non-woven fabric as canopy in the field, first open two conventional width non-woven fabrics side by side, then use needle thread on-site sewing and fix, form the non-woven fabric of super wide width. Then lay the non-woven fabric of super wide width on the erected shed frame. Also can on-site hot melt joint two conventional width non-woven fabrics, instead of sewing. This brings certain inconvenience to use, and if directly increasing width, existing equipment needs to be reformed, and the reform of equipment is not simply expanding size, may produce a series of requirements, such as the pressure of melt in the equipment lumen, the requirement to raw material melt index, the requirement to equipment power etc. Therefore, the more optimal scheme is to provide a non-woven fabric expanding device to weld the conventional non-woven fabric to increase width. SUMMARY
[0003] The utility model solves above -mentioned problem, and provides a non -woven fabric's expanding device.
[0004] The utility model solves above -mentioned problem technical scheme as follows:
[0005] A non-woven fabric expanding device, comprising a first unwinding roller for providing a first non-woven fabric, a second unwinding roller for providing a second non-woven fabric, a hot melt adhesive machine for applying a molten resin between the first non-woven fabric and the second non-woven fabric, a compression roller set disposed behind the hot melt adhesive machine for rolling the first non-woven fabric and the second non-woven fabric, and a take-up roller disposed behind the compression roller set for winding a wide-width non-woven fabric formed by the molten bonding of the first non-woven fabric and the second non-woven fabric.
[0006] In the above technical solution of the utility model, heat-melting adhesive is applied between the edge portions of the two layers of non-woven fabric, and the non-woven fabric after applying the adhesive is rolled, and finally wound, thereby realizing online molten bonding of the non-woven fabric.
[0007] As a preferred embodiment of the above technical solution, a first guide roller is provided behind the first unwinding roller, and a second guide roller is provided behind the second unwinding roller. The first guide roller is located below the plane where the working area of the pressure roller group is located, and the second guide roller is located above the plane where the working area of the pressure roller group is located.
[0008] In the above-mentioned technical solution of this utility model, the arrangement of the first and second guide rollers relative to the pressure roller group can ensure that when the first and second nonwoven fabrics enter the working area of the sol-gel machine, the two layers of nonwoven fabrics are not closed, and a certain gap is maintained so as to facilitate the application of molten adhesive.
[0009] As a preferred embodiment of the above technical solution, the melting machine includes a hopper, a melting material conveying section, and a melting material output section; the melting material output section includes a first conveying zone for a first nonwoven fabric to pass through, a second conveying zone for a second nonwoven fabric to pass through, and a melting material outlet; in the vertical direction, the melting material outlet is located between the first conveying zone and the second conveying zone.
[0010] As a preferred embodiment of the above technical solution, in the front-to-back direction, the molten material outlet is located behind the first or second conveying zone.
[0011] In the above-mentioned technical solution of this utility model, the setting of the first guide area and the second guide area further ensures that the nonwoven fabric maintains a certain gap when entering the working area of the sol-gel machine, and enters the working area of the sol-gel machine in a stable conveying state.
[0012] As a preferred embodiment of the above technical solution, the molten material conveying unit includes a conveying mechanism and a heating mechanism, wherein the conveying mechanism is a auger mechanism, and the pitch of the auger mechanism gradually decreases along the feeding direction.
[0013] As a preferred embodiment of the above technical solution, the pressure roller assembly includes an upper roller and a lower roller arranged in pairs; each of the upper roller and the lower roller includes a pressure roller body, a flexible part wrapped around the pressure roller body, a shaping part disposed on the pressure roller body, and a roller cutter.
[0014] In the above-mentioned technical solution of this utility model, the flexible part of the wrapping can ensure the stable conveying of the nonwoven fabric, so that it does not slip relative to the roller in the conveying direction of the roller during the conveying process.
[0015] In the above-mentioned technical solution of this utility model, the shaping part can roll the welding area of the nonwoven fabric to produce a better weld between the two layers of nonwoven fabric.
[0016] In the above-mentioned technical solution of this utility model, the roller cutter can perform online roller cutting on the edge of the welding area of the nonwoven fabric, so that the edge of the welding area becomes flush.
[0017] As a preferred embodiment of the above technical solution, the shaping part is an annular protrusion formed by extending the body of the pressure roller outward.
[0018] As a preferred embodiment of the above technical solution, the roller cutter includes an upper cutter disposed on the upper roller and a lower cutter disposed on the lower roller, wherein the cutting edges of the upper cutter and the lower cutter are arranged opposite to each other.
[0019] As a preferred embodiment of the above technical solution, the roller cutter is disposed on the outer side of the shaping section.
[0020] As a preferred embodiment of the above technical solution, the second unwinding roller is disposed on a sliding track, and the sliding track is disposed in the width direction of the nonwoven fabric.
[0021] In the above-mentioned technical solution of this utility model, the sliding track can be set to make fine adjustments to the second unwinding roller in the lateral direction during the welding process, so as to ensure that the two layers of nonwoven fabric are aligned at the edges and to ensure the welding quality.
[0022] As a preferred embodiment of the above technical solution, a fabric clamping roller group and a third guide roller are further provided between the pressure roller group and the winding roller group.
[0023] In the above-mentioned technical solution of this utility model, the setting of the fabric clamping roller group can adjust the tension of the nonwoven fabric after welding during the conveying process, so as to further ensure the quality of welding.
[0024] In summary, this utility model has the following beneficial effects:
[0025] 1. This utility model achieves online welding of nonwoven fabric by applying hot melt adhesive between the edges of two layers of nonwoven fabric, rolling the adhesive-coated nonwoven fabric, and finally winding it up.
[0026] 2. The arrangement of the first and second guide rollers relative to the pressure roller group in this utility model can ensure that when the first and second nonwoven fabrics enter the working area of the sol-gel machine, the two layers of nonwoven fabrics are not closed and a certain gap is maintained so as to facilitate the application of molten adhesive.
[0027] 3. The gradually decreasing pitch of the auger mechanism in this utility model ensures a stable supply of welding material;
[0028] 4. The flexible part of the wrapping of this utility model can ensure the stable conveying of non-woven fabric, so that it does not slip relative to the roller in the conveying direction of the roller during the conveying process; the shaping part can roll and press the welding area of the non-woven fabric to produce better welding between the two layers of non-woven fabric; the roller cutter can roll and cut the edge of the welding area of the non-woven fabric in line to make the edge of the welding area flush.
[0029] 5. The sliding track of this utility model allows for fine-tuning of the second unwinding roller in the lateral direction during the welding process, ensuring that the two layers of nonwoven fabric are aligned at the edges and thus ensuring the welding quality.
[0030] 6. The fabric clamping roller assembly of this utility model can adjust the tension of the nonwoven fabric after welding during the conveying process, so as to further ensure the quality of welding. Attached Figure Description
[0031] Figure 1 This is a schematic diagram of the structure of this utility model;
[0032] Figure 2 yes Figure 1 Schematic diagram of a sol generator;
[0033] Figure 3 yes Figure 2 Schematic diagram of the structure of the molten material output section;
[0034] Figure 4 yes Figure 1 Schematic diagram of the intermediate pressure roller assembly;
[0035] The component names represented by the labels in the diagram are as follows:
[0036] 1. First unwinding roll,
[0037] 2. Second unwinding roller,
[0038] 3. Melting glue machine
[0039] 4. Pressure roller assembly
[0040] 5. First guide roller,
[0041] 6. Second guide roller,
[0042] 7. Fabric clamping roller assembly,
[0043] 8. Third guide roller,
[0044] 9. Take-up roller,
[0045] 31. Silo,
[0046] 32. Molten material conveying unit,
[0047] 33. Melt output section,
[0048] 41. Upper roller,
[0049] 42. Lower roller,
[0050] 331. First delivery area.
[0051] 332. Second delivery area.
[0052] 333. Molten charge outlet,
[0053] 411. Press roller body,
[0054] 412. Flexible section
[0055] 413. Shaping section
[0056] 414. Upper cutting knife,
[0057] 421. Press roller body,
[0058] 422. Flexible part
[0059] 423. Shaping section,
[0060] 424. Downward cutting blade. Detailed Implementation
[0061] The present invention will be further explained below with reference to the accompanying drawings.
[0062] This specific embodiment is merely an explanation of the present invention and is not intended to limit it. Any changes made by those skilled in the art after reading this specification, as long as they fall within the scope of the claims, will be protected by patent law.
[0063] Example 1
[0064] like Figure 1 As shown, a nonwoven fabric spreading device includes a first unwinding roller 1 for providing a first nonwoven fabric, a second unwinding roller 2 for providing a second nonwoven fabric, a melt glue machine 3 for applying molten resin between the first and second nonwoven fabrics, a pressure roller group 4 disposed behind the melt glue machine for pressing the first and second nonwoven fabrics, a fabric clamping roller group 7 disposed behind the pressure roller group, and a take-up roller 9. A first guide roller 5 is disposed behind the first unwinding roller 1, a second guide roller 6 is disposed behind the second unwinding roller 2, and a third guide roller 8 is disposed behind the fabric clamping roller group 7. The first guide roller 5 is disposed below the working area of the pressure roller group 4, and the second guide roller 6 is disposed above the working area of the pressure roller group 4. The arrangement of the first and second guide rollers relative to the pressure roller group ensures that the first and second nonwoven fabrics are not closed together when entering the working area of the melt glue machine, maintaining a certain gap to facilitate the application of molten resin.
[0065] like Figure 1 As shown, the second unwinding roller 2 is set on a sliding track, which is set in the width direction of the nonwoven fabric. During the welding process, the second unwinding roller can be finely adjusted laterally to ensure that the two layers of nonwoven fabric are aligned at the edges and to ensure the welding quality.
[0066] likeFigure 2 As shown, the sol-gel machine 3 includes a hopper 31, a melt conveying section 32, and a melt output section 33. The melt output section 33 includes a first conveying zone 331 for a first nonwoven fabric to pass through, a second conveying zone 332 for a second nonwoven fabric to pass through, and a melt outlet 333. In the vertical direction, the melt outlet 333 is located between the first and second conveying zones; in the front-rear direction, the melt outlet 333 is located behind either the first or second conveying zone 331. The melt conveying section 32 includes a conveying mechanism and a heating mechanism. The conveying mechanism is a auger mechanism, and as shown... Figure 2 As shown, the pitch of the auger mechanism gradually decreases along the feeding direction.
[0067] like Figure 3 As shown, the pressure roller assembly 4 includes a pair of upper rollers 41 and lower rollers 42. Each of the upper rollers 41 and lower rollers 42 includes a roller body 411, 421, a flexible portion 412, 422 wrapped around the roller body, a shaping portion 413, 423 disposed on the roller body, and a roller cutter. The roller cutter includes an upper cutter 414 disposed on the upper roller 41 and a lower cutter 424 disposed on the lower roller 42, with the blades of the upper cutter 414 and the lower cutter 424 facing each other.
[0068] like Figure 3 As shown, the shaping portions 413 and 423 are annular protrusions extending outward from the pressure roller bodies 411 and 421. The roller cutter is disposed on the outer side of the shaping portions.
[0069] Example 2
[0070] like Figure 1 As shown, a nonwoven fabric spreading device includes a first unwinding roller 1 for providing a first nonwoven fabric, a second unwinding roller 2 for providing a second nonwoven fabric, a melt glue machine 3 for applying molten resin between the first and second nonwoven fabrics, a pressure roller group 4 disposed behind the melt glue machine for pressing the first and second nonwoven fabrics, a fabric clamping roller group 7 disposed behind the pressure roller group, and a take-up roller 9.
[0071] like Figure 2As shown, the sol-gel machine 3 includes a hopper 31, a melt conveying section 32, and a melt output section 33. The melt output section 33 includes a first guide zone 331 for the passage of a first nonwoven fabric, a second guide zone 332 for the passage of a second nonwoven fabric, and a melt outlet 333. In the vertical direction, the melt outlet 333 is located between the first and second guide zones; in the front-back direction, the melt outlet 333 is located behind either the first or second guide zone 331. Unlike Embodiment 1, there is no first guide roller behind the first unwinding roller 1, and no second guide roller 6 behind the second unwinding roller 2. Due to the presence of the first and second guide zones 331 and 332, a certain distance can be maintained between the two layers of nonwoven fabric without the guide rollers, ensuring the application of the melt.
[0072] Example 3
[0073] like Figure 1 As shown, a nonwoven fabric spreading device includes a first unwinding roller 1 for providing a first nonwoven fabric, a second unwinding roller 2 for providing a second nonwoven fabric, a melt glue machine 3 for applying molten resin between the first and second nonwoven fabrics, a pressure roller group 4 disposed behind the melt glue machine for pressing the first and second nonwoven fabrics, a fabric clamping roller group 7 disposed behind the pressure roller group, and a take-up roller 9. A first guide roller 5 is disposed behind the first unwinding roller 1, a second guide roller 6 is disposed behind the second unwinding roller 2, and a third guide roller 8 is disposed behind the fabric clamping roller group 7. The first guide roller 5 is disposed below the working area of the pressure roller group 4, and the second guide roller 6 is disposed above the working area of the pressure roller group 4. The arrangement of the first and second guide rollers relative to the pressure roller group ensures that the first and second nonwoven fabrics are not closed together when entering the working area of the melt glue machine, maintaining a certain gap to facilitate the application of molten resin.
[0074] The difference from Embodiment 1 is that the pressure roller assembly 4 includes a pair of upper rollers 41 and lower rollers 42; each of the upper rollers 41 and lower rollers 42 includes a pressure roller body 411, 421, a flexible portion 412, 422 wrapped around the pressure roller body, and a shaping portion 413, 423 disposed on the pressure roller body. No roller cutter is provided in this embodiment. Correspondingly, after welding, the edge of the welded area is not smooth, but this does not affect the use of wide-width nonwoven fabric.
Claims
1. A nonwoven fabric spreading device, comprising a first unwinding roller (1) for providing a first nonwoven fabric and a second unwinding roller (2) for providing a second nonwoven fabric, characterized in that: It also includes a melt glue machine (3) for applying molten resin between the first nonwoven fabric and the second nonwoven fabric, a pressure roller group (4) arranged behind the melt glue machine for pressing the first nonwoven fabric and the second nonwoven fabric, and a winding roller (9) arranged behind the pressure roller group for winding the wide nonwoven fabric formed by welding the first nonwoven fabric and the second nonwoven fabric. A first guide roller (5) is provided behind the first unwinding roller (1), and a second guide roller (6) is provided behind the second unwinding roller (2). The first guide roller (5) is located below the working area of the pressure roller group (4), and the second guide roller (6) is located above the working area of the pressure roller group (4). The melt glue machine (3) includes a hopper (31), a melt conveying section (32), and a melt output section (33); the melt output section (33) includes a first conveying zone (331) for the passage of a first nonwoven fabric, a second conveying zone (332) for the passage of a second nonwoven fabric, and a melt outlet (333); in the vertical direction, the melt outlet (333) is located between the first conveying zone and the second conveying zone.
2. The nonwoven fabric expansion device according to claim 1, characterized in that: In the front-to-back direction, the molten material outlet (333) is located behind the first conveying area (331) or the second conveying area (332).
3. The nonwoven fabric expansion device according to claim 1, characterized in that: The molten material conveying unit (32) includes a conveying mechanism and a heating mechanism. The conveying mechanism is a auger mechanism, and the pitch of the auger mechanism gradually decreases along the feeding direction.
4. The nonwoven fabric expansion device according to claim 1, characterized in that: The pressure roller assembly (4) includes an upper roller (41) and a lower roller (42) arranged in pairs; the upper roller (41) and the lower roller (42) each include a pressure roller body (411, 421), a flexible part (412, 422) wrapped around the pressure roller body, a shaping part (413, 423) provided on the pressure roller body, and a roller cutter.
5. The nonwoven fabric expansion device according to claim 4, characterized in that: The shaping part (413, 423) is an annular protrusion formed by extending outward from the pressure roller body (411, 421).
6. The nonwoven fabric expansion device according to claim 4, characterized in that: The roller cutter includes an upper cutter (414) disposed on the upper roller (41) and a lower cutter (424) disposed on the lower roller (42), with the blades of the upper cutter (414) and the lower cutter (424) arranged opposite to each other.
7. The nonwoven fabric expansion device according to claim 4, characterized in that: The roller cutter is located on the outside of the shaping section.
8. The nonwoven fabric expansion device according to claim 1, characterized in that: The second unwinding roller (2) is mounted on a sliding track, which is mounted in the width direction of the nonwoven fabric.