Fixing mechanism of non-woven fabric wind-up roller

Abstract

The invention discloses a fixing mechanism for a non-woven fabric winding roller, which is used for fixing the end part of a non-woven fabric and comprises a roller main body of the winding roller, a fixing groove is formed in the roller body in the length direction of the roller body. A plurality of fixing plates are movably arranged in the fixing groove in the length direction of the fixing groove, a plurality of pushing assemblies are arranged on the groove wall of one side of the fixing groove, and the pushing assemblies can drive the fixing plates to move in the radial direction of the roller body so that the fixing plates can abut against and press the bottom face of the fixing groove. Guide structures matched with each other are arranged between the fixing plate and the groove wall and used for restraining the moving path of the fixing plate. And an occlusion structure matched with the bottom surface of the fixing groove is arranged on the fixing plate and is used for preventing the end part of the non-woven fabric from sliding. The non-woven fabric leftover fixing device integrally achieves efficient and reliable fixing of non-woven fabric leftovers.

Description

Technical Field

[0001] This invention relates to the field of nonwoven fabric take-up rollers, and more particularly to a fixing mechanism for nonwoven fabric take-up rollers. Background Technology

[0002] Nonwoven fabric, a new type of environmentally friendly material composed of oriented or random fibers, is widely used in various fields such as medical, hygiene, agriculture, and industry due to its excellent properties such as moisture resistance, breathability, flexibility, and lightweight. In the continuous production process of nonwoven fabric, winding is one of the final and most crucial steps, and its quality directly affects the storage, transportation, and subsequent processing of the product.

[0003] The core of the winding process is to smoothly and tightly wind the continuously produced nonwoven fabric onto the winding roller. The first step in achieving this is to firmly and reliably fix the starting end of the nonwoven fabric to the surface of the winding roller. An effective initial fixation is fundamental to preventing the fabric from slipping, wrinkling, or loosening during the winding process, and is crucial for ensuring winding quality and improving production efficiency.

[0004] However, traditional fixing methods heavily rely on manual operation. At the start of winding, operators need to press the nonwoven fabric end onto the winding roller (or air shaft) by hand and rotate with the machine until the fabric is wound several times to generate sufficient friction before releasing their grip. This method results in long downtime, taking at least 3 minutes from unwinding to manually winding the fabric end, severely impacting production continuity.

[0005] To replace manual labor, some technologies use adhesive substances (such as glue or tape) to attach one end of the nonwoven fabric to the winding roller. While this method offers some initial convenience, its effectiveness is highly inconsistent and it introduces a series of new problems. First, the adhesiveness is difficult to control: excessively high adhesiveness makes it difficult to peel the nonwoven fabric off the roller after winding, and may even damage the surface of the nonwoven fabric; insufficient adhesiveness fails to ensure the fabric end is firmly fixed during winding, resulting in slippage. Second, it has poor versatility and is cumbersome to operate: different types, thicknesses, and materials of nonwoven fabrics have vastly different adhesive requirements, forcing companies to stock various adhesive substances and conduct tedious adjustments and tests before each winding, increasing production costs and operational complexity.

[0006] In summary, existing methods for fixing nonwoven fabric ends have significant shortcomings. Manual operation is risky and inefficient; adhesive fixing is unstable, easily damages the product, and the preparation process is cumbersome.

[0007] Therefore, the industry urgently needs a fixing mechanism for nonwoven fabric take-up rollers that can take into account safety, efficiency, reliability and adaptability. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a fixing mechanism for nonwoven fabric take-up rollers, which solves the problems of high risk and low efficiency of manual operation, unstable adhesive fixing effect, easy damage to products and cumbersome preparation process in the existing technology.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A fixing mechanism for a nonwoven fabric take-up roller, used to fix the end of the nonwoven fabric, includes:

[0011] The main body of the take-up roll;

[0012] The roller body has a fixed groove along its own length.

[0013] Multiple fixing plates are movably arranged in the fixing groove along its own length direction. Multiple pushing components are arranged on one side wall of the fixing groove. The pushing components can drive the fixing plates to move radially along the roller body so that the fixing plates abut against and press against the bottom surface of the fixing groove.

[0014] Furthermore, a cooperating guide structure is provided between the fixing plate and the groove wall to constrain the movement path of the fixing plate;

[0015] The fixing plate is provided with an interlocking structure that mates with the bottom surface of the fixing groove to prevent the end of the nonwoven fabric from slipping.

[0016] Furthermore, the fixing groove has two opposing long sidewalls;

[0017] One of the long sidewalls is the first sidewall, and the first sidewall is parallel to the radial section of the roller body;

[0018] The other long sidewall is the second sidewall, which has an inclined surface that slopes from the groove opening to the bottom of the groove, forming a clearance structure that facilitates the insertion of the nonwoven fabric end.

[0019] Furthermore, a fixed protrusion is provided on the first sidewall along its length direction, and a plurality of threaded holes are provided on the fixed protrusion along its own length direction, as well as a screw screwed into the threaded holes; the lower end of each screw screw extends into the fixed groove and is rotatably connected to the back of one of the fixed plates respectively.

[0020] Furthermore, the upper part of the threaded hole is a countersunk hole for accommodating the head of the screw; the depth of the countersunk hole is configured such that when the screw rotates to the point where the fixing plate abuts against the bottom surface of the fixing groove, the head of the screw is not higher than the upper surface of the fixing flange.

[0021] Furthermore, the guide structure includes a dovetail protrusion provided along the edge of the fixed plate and a dovetail groove opened on the first side wall. The dovetail protrusion is slidably disposed in the dovetail groove, and the length direction of the dovetail groove is parallel to the screw axis.

[0022] Furthermore, the surface of the fixing plate that contacts the bottom surface of the fixing groove is an abutting surface, the interlocking structure is a serrated protrusion on the abutting surface of the fixing plate, and the bottom surface of the fixing groove is provided with a toothed groove that matches the serrated protrusion.

[0023] Furthermore, both the contact surface and the bottom surface of the fixing groove are provided with an anti-slip adhesive layer.

[0024] Furthermore, the groove edge of the second sidewall is provided with a guide radius.

[0025] Furthermore, the bottom surface of the fixing groove is a detachable wear-resistant plate, and the wear-resistant plate is provided with the toothed groove, which is installed in the fixing groove of the roller body by fasteners.

[0026] Furthermore, a counterweight is provided on the side of the roller body opposite to the location where the fixing groove is opened.

[0027] The beneficial effects of this invention are as follows: First, it drives the fixing plate to perform radial clamping by mechanically pushing the component, replacing the cumbersome and unsafe manual method that requires operators to hold the cloth head down by hand until it is wrapped several times. This achieves automation and de-management of the fixing operation, significantly improving work efficiency and eliminating safety hazards.

[0028] Secondly, it avoids the problems of difficult peeling and damage to the fabric due to excessively high viscosity, or slippage of the fabric end during winding due to excessively low viscosity. Moreover, it does not require adjusting the adhesive for different fabrics, making it highly versatile and easy to operate.

[0029] Furthermore, the fixing groove is designed with an inclined surface that slopes from the groove opening to the bottom of the groove, forming a natural guide "flare". This allows the end of the non-woven fabric to be easily and accurately guided and inserted into the fixing groove, greatly improving the convenience and error tolerance of the initial fixing.

[0030] Finally, the dual design of guiding structures (such as dovetail grooves) to constrain the movement path and interlocking structures (such as serrations) and anti-slip adhesive layers to prevent slippage ensures that the fixing plate moves accurately and without tilting under strong clamping force. After clamping, it forms a mechanical interlock and high friction combination, providing a firm and durable fixing effect for the end of the nonwoven fabric. Attached Figure Description

[0031] Figure 1 This is an axial sectional view of an embodiment of the present invention;

[0032] Figure 2This is an enlarged view of the fixing mechanism according to an embodiment of the present invention;

[0033] Figure 3 This is a top view schematic diagram of an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the guide fillet and wear-resistant plate in an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the counterweight block in an embodiment of the present invention.

[0036] The reference numerals in the accompanying drawings include: roller body 1, fixing groove 2, fixing plate 3, first side wall 4, second side wall 5, fixing flange 6, threaded hole 7, screw 8, countersunk hole 9, dovetail protrusion 10, dovetail groove 11, serrated protrusion 12, tooth groove 13, anti-slip rubber layer 14, guide rounded corner 15, wear-resistant plate 16, counterweight 17. Detailed Implementation

[0037] The present invention will be further described in detail below through specific embodiments:

[0038] like Figure 1 , Figure 2 , Figure 3 As shown, a fixing mechanism for a nonwoven fabric take-up roller, used to fix the end of the nonwoven fabric, includes:

[0039] The take-up roller has a main body 1; the main body 1 has a fixed groove 2 along its length; multiple fixed plates 3 are movably arranged in the fixed groove 2 along its length; multiple pushing components are arranged on one side wall of the fixed groove 2, and the pushing components can drive the fixed plates 3 to move radially along the main body 1 so that the fixed plates 3 abut against and press against the bottom surface of the fixed groove 2; and a guide structure that cooperates with the fixed plates 3 and the groove wall is provided to constrain the movement path of the fixed plates 3; the fixed plates 3 are provided with an interlocking structure that cooperates with the bottom surface of the fixed groove 2 to prevent the end of the nonwoven fabric from slipping.

[0040] like Figure 1 , Figure 2 As shown, preferably, the fixing groove 2 has two opposing long sidewalls; one of the long sidewalls is a first sidewall 4, which is parallel to the radial section of the roller body 1; the other long sidewall is a second sidewall 5, which is an inclined surface that slopes from the groove opening to the bottom of the groove, forming a clearance structure that facilitates the insertion of the nonwoven fabric end. Specifically, the opening size of the fixing groove 2 is a funnel-shaped guide structure that gradually expands from the bottom of the groove to the opening. This structure allows the nonwoven fabric end to slide naturally along this gradually expanding inclined surface and be guided to the depth of the fixing groove 2 when it contacts the roller surface, greatly reducing the precision requirements of manual alignment and insertion, and improving the convenience and efficiency of initial fixing.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, preferably, a fixed flange 6 is provided on the first sidewall 4 along its length direction. The fixed flange 6 has several threaded holes 7 along its length direction, and a screw 8 screwed into each of the threaded holes 7. The lower end of each screw 8 extends into the fixing groove 2 and is rotatably connected to the back of one of the fixing plates 3. This structure provides mechanical downward pressure to each fixing plate 3 by rotating the screw 8, replacing manual labor or adhesive substances, and achieving active, adjustable, and reliable fixing force. Furthermore, thanks to the inherent self-locking property of the threaded pair, when the screw 8 is tightened to a predetermined position, its position and the applied pressure will automatically lock.

[0042] like Figure 1 , Figure 2 As shown, preferably, the upper part of the threaded hole 7 is a countersunk hole 9 for accommodating the head of the screw 8; the depth of the countersunk hole 9 is configured such that when the screw 8 rotates to the point where the fixing plate 3 abuts against the bottom surface of the fixing groove 2, the head of the screw 8 is not higher than the upper surface of the fixing flange 6. This detailed design ensures that the head of the screw 8 is completely submerged or flush with the surface of the fixing flange 6 after tightening, keeping the outer circumference of the take-up roller smooth and without protrusions, effectively preventing scratches or indentations on the nonwoven fabric wound on it during winding or storage, while also improving the overall appearance and safety of the mechanism.

[0043] like Figure 1 , Figure 2 As shown, preferably, the guide structure includes a dovetail protrusion 10 along the edge of the fixed plate 3 and a dovetail groove 11 on the first sidewall 4. The dovetail protrusion 10 is slidably disposed in the dovetail groove 11, and the length direction of the dovetail groove 11 is parallel to the axis of the screw 8. The dovetail-shaped guide structure strictly constrains the fixed plate 3 to move smoothly only along the designed radial path, effectively preventing lateral deviation and ensuring the precise execution of the clamping action and the long-term reliability of the mechanism.

[0044] like Figure 1 , Figure 2 As shown, preferably, the surface of the fixing plate 3 that contacts the bottom surface of the fixing groove 2 is an abutment surface, and the interlocking structure consists of a serrated protrusion 12 on the abutment surface of the fixing plate 3, and a toothed groove 13 on the bottom surface of the fixing groove 2 that matches the serrated protrusion 12. When the fixing plate 3 is pressed, the serrated protrusion 12 at its bottom will embed into the corresponding toothed groove 13 on the bottom surface of the fixing groove 2, forming a stable mechanical interlock.

[0045] like Figure 1 , Figure 2As shown, preferably, both the contact surface and the bottom surface of the fixing groove 2 are provided with an anti-slip adhesive layer 14. The addition of an anti-slip adhesive layer 14 (such as rubber) to the contact surface on the basis of mechanical interlocking provides double anti-slip protection. On the one hand, it can fill the microscopic unevenness between the non-woven fabric and the metal surface, providing a large static friction force and effectively preventing the non-woven fabric from slipping under the action of the winding tangential force; on the other hand, the elasticity of the rubber layer can protect the surface of the non-woven fabric and avoid indentation damage, making it especially suitable for products with high surface quality requirements.

[0046] like Figure 4 As shown, preferably, the groove edge of the second sidewall 5 is provided with a guide radius 15. This design can further reduce the frictional resistance between the groove edge and the nonwoven fabric, making the operation smoother; at the same time, the rounded edge can effectively prevent the operator's hands or the nonwoven fabric itself from being scratched or snagged by sharp edges when quickly inserted, improving the safety of use and the protection of materials.

[0047] like Figure 4 As shown, preferably, the bottom surface of the fixing groove 2 is a detachable wear-resistant plate 16, on which the toothed groove 13 is formed, and it is installed in the fixing groove 2 of the roller body 1 by fasteners. This structure makes the working surface that directly bears friction and biting force an independent component. When the toothed groove 13 wears down due to long-term use, only the wear-resistant plate 16 needs to be replaced, without replacing the entire expensive roller body 1, which greatly reduces maintenance costs and extends the overall service life of the roller. The fasteners can be bolts, with bolt holes pre-set on the bottom surface of the fixing groove 2, and corresponding holes formed on the wear-resistant plate 16, so that the wear-resistant plate 16 can be fixed by bolts.

[0048] like Figure 5 As shown, preferably, a counterweight 17 is provided on the side of the roller body 1 opposite to the location where the fixing groove 2 is formed. Since the presence of the fixing groove 2 and its internal components can disrupt the uniformity of the circumferential mass of the roller body 1, this counterweight 17 can be used to precisely compensate for the mass gap on this side, ensuring good dynamic balance of the entire winding roller during high-speed rotation, significantly reducing vibration and noise, and improving the smoothness of equipment operation and the lifespan of components such as bearings. It should be noted that the counterweight is bolted to the roller body (not shown in the accompanying drawings as this is a conventional application of existing technology), and its surface is flush with the roller body surface.

[0049] The usage method of this invention embodiment is as follows:

[0050] I. Preparation and Inspection Before Use

[0051] Mechanism status confirmation: Before starting the winding operation, first confirm that all screws 8 should be in the loose position, and the fixed plate 3 connected to them should be in a higher position in the fixed groove 2 under its own weight or slight external force, without contacting the bottom of the groove, to ensure that the entrance area of ​​the fixed groove 2 is unobstructed.

[0052] Nonwoven fabric end preparation: Trim the ends of the nonwoven fabric to be rolled up neatly. It is recommended that the length of the end be slightly longer than the length of the fixing groove 2 to facilitate subsequent feeding and fixing operations.

[0053] II. Fixing the ends of the nonwoven fabric

[0054] Introduce the nonwoven fabric end: Hold the nonwoven fabric end and place it close to the surface of the roller body 1 of the take-up roller. Using the inclined surface (i.e., the trumpet-shaped guide structure) of the second side wall 5 of the fixing groove 2, guide the fabric end towards the inclined surface. Since the opening size gradually increases from the bottom of the groove to the opening, the fabric end can slide into the depth of the fixing groove 2 under the guidance of this inclined surface.

[0055] Drive the fixing plate 3 to press:

[0056] After the end of the nonwoven fabric is laid flat on the bottom surface of the fixing groove 2, start tightening the screw 8 on the fixing flange 6.

[0057] When the screw 8 rotates, its lower end pushes the fixed plate 3 to move radially downward along the roller body 1. During this process, the dovetail protrusion 10 on the side of the fixed plate 3 slides in the dovetail groove 11 of the first side wall 4. This guide structure strictly constrains the movement path of the fixed plate 3, ensuring that it presses down vertically and smoothly without deviation or jamming.

[0058] Continue tightening the screw 8 until the fixing plate 3 firmly abuts and presses the end of the nonwoven fabric against the bottom surface of the fixing groove 2. At this time, the serrated protrusions 12 on the abutting surface of the fixing plate 3 are embedded in the corresponding grooves 13 on the bottom surface of the fixing groove 2, forming a mechanical interlock. At the same time, the anti-slip adhesive layer 14 (such as a rubber layer) on the abutting surface and the bottom surface of the groove is in close contact with the nonwoven fabric, providing extremely high static friction.

[0059] End fixing completed: Repeat the above operation, tightening the multiple screws 8 along the length of the fixing groove 2 in sequence, driving the corresponding multiple fixing plates 3 to evenly press the end of the nonwoven fabric along its entire length. After completion, the end of the nonwoven fabric is firmly fixed by the dual action of mechanical interlocking and high friction, and the head of the screw 8 is located inside the countersunk hole 9, not higher than the surface of the fixing protrusion 6, ensuring the smoothness of the outer circumference of the take-up roller and preventing damage to the fabric.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A fixing mechanism for a nonwoven fabric take-up roller, used to fix the end of the nonwoven fabric, characterized in that, include: The main body of the take-up roll (1); The roller body (1) has a fixed groove (2) along its own length direction; Multiple fixing plates (3) are movably arranged in the fixing groove (2) along its own length direction. Multiple pushing components are arranged on one side wall of the fixing groove (2). The pushing components can drive the fixing plates (3) to move radially along the roller body (1) so that the fixing plates (3) abut against and press against the bottom surface of the fixing groove (2). Furthermore, a guide structure is provided between the fixing plate (3) and the groove wall to constrain the movement path of the fixing plate (3); The fixing plate (3) is provided with an interlocking structure that matches the bottom surface of the fixing groove (2) to prevent the end of the nonwoven fabric from slipping.

2. The fixing mechanism for the nonwoven fabric take-up roller according to claim 1, characterized in that, The fixing groove (2) has two opposing long sidewalls; One of the long sidewalls is the first sidewall (4), which is parallel to the radial section of the roller body (1); Another long sidewall is the second sidewall (5), which is an inclined surface that slopes from the groove opening to the bottom of the groove, forming a clearance structure that facilitates the insertion of the nonwoven fabric end.

3. The fixing mechanism for the nonwoven fabric take-up roller according to claim 2, characterized in that, The first sidewall (4) is provided with a fixed protrusion (6) along its length direction. The fixed protrusion (6) is provided with a plurality of threaded holes (7) along its own length direction, and a screw (8) is screwed into the threaded hole (7). The lower end of each screw (8) extends into the fixed groove (2) and is rotatably connected to the back of a fixed plate (3).

4. The fixing mechanism for the nonwoven fabric take-up roller according to claim 3, characterized in that, The upper part of the threaded hole (7) is a countersunk hole (9) for accommodating the head of the screw (8); the depth of the countersunk hole (9) is configured such that when the screw (8) rotates to the point where the fixing plate (3) abuts against the bottom surface of the fixing groove (2), the head of the screw (8) is not higher than the upper surface of the fixing flange (6).

5. The fixing mechanism for the nonwoven fabric take-up roller according to claim 3, characterized in that, The guide structure includes a dovetail protrusion (10) provided on the edge of the fixing plate (3) and a dovetail groove (11) opened on the first side wall (4). The dovetail protrusion (10) is slidably disposed in the dovetail groove (11), and the length direction of the dovetail groove (11) is parallel to the axis of the screw (8).

6. The fixing mechanism for the nonwoven fabric take-up roller according to claim 1, characterized in that, The surface of the fixing plate (3) that contacts the bottom surface of the fixing groove (2) is the abutting surface. The interlocking structure is a sawtooth protrusion (12) provided on the abutting surface of the fixing plate (3). The bottom surface of the fixing groove (2) is provided with a tooth groove (13) that matches the sawtooth protrusion (12).

7. The fixing mechanism for the nonwoven fabric take-up roller according to claim 6, characterized in that, Both the contact surface and the bottom surface of the fixing groove (2) are provided with an anti-slip adhesive layer (14).

8. The fixing mechanism for the nonwoven fabric take-up roller according to claim 2, characterized in that, The groove edge of the second sidewall (5) is provided with a guide fillet (15).

9. The fixing mechanism for the nonwoven fabric take-up roller according to claim 6, characterized in that, The bottom surface of the fixed groove (2) is a detachable wear-resistant plate (16), and the wear-resistant plate (16) is provided with the toothed groove (13), and is installed in the fixed groove (2) of the roller body (1) by fasteners.

10. The fixing mechanism for the nonwoven fabric take-up roller according to claim 1, characterized in that, A counterweight (17) is provided on the side of the roller body (1) opposite to the position where the fixed groove (2) is opened.

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