Detachable and convenient water-jet machine net cover structure

Abstract

The utility model discloses a detachable convenient water jet machine net cover structure, including providing the base drum of net cover installation reference, the base drum is provided as high accuracy rigid cylinder, and the support bottom net subassembly fixed sleeve of being used for bearing water jet high pressure water impact and locking mechanism tension is set in the outer peripheral surface of base drum, through with the fixed support bottom net subassembly of net cover split and the outer layer pattern nickel net that can be separately detached, when needing to replace water jet non - woven fabric product pattern to realize the production, only need to detach the positioning end cover of base drum both ends, can take down and replace the outer layer pattern nickel net from the outer peripheral surface of support bottom net subassembly, do not need to dismantle whole net cover and base drum like the integral type net cover of present, and this structure design thoroughly solved the pain point of long time of whole net replacement in the prior art, significantly shorten the net replacement operation time, effectively promote production continuity and production flexibility, can better adapt the market production demand of multivariety, small batch.

Description

Technical Field

[0001] This utility model relates to the field of nonwoven fabric production technology, specifically to a detachable and convenient hydroentanglement machine mesh sleeve structure. Background Technology

[0002] In the production process of semi-cross-thread spunlace nonwoven fabric, the spunlace machine sleeve is a core component. Its main function is to support the fiber web and work with high-pressure water jets to achieve fiber entanglement. After the high-pressure water jets penetrate the fiber web, they impact the sleeve and are reflected by the sleeve to form multi-directional turbulence, allowing the fibers to fully interweave and entangle in three-dimensional space to form the skeletal structure of the fabric. At the same time, the structural form of the sleeve directly determines the pattern of the spunlace nonwoven fabric (such as plain weave, small pearl weave, 22-mesh weave, EF weave, etc.). The performance and ease of use of the sleeve directly affect product quality, production efficiency and production cost.

[0003] However, most existing hydroentanglement machine sleeves are structures that combine punching and protection functions (such as imported small pearl pattern sleeves). When it is necessary to change the product pattern to achieve production conversion, the entire sleeve must be disassembled from the base roller and reassembled. This process is time-consuming and seriously reduces production efficiency. Therefore, we need to propose a detachable and convenient hydroentanglement machine sleeve structure. Utility Model Content

[0004] The purpose of this utility model is to provide a detachable and convenient hydroentangling machine mesh sleeve structure. By setting the mesh sleeve to be divided into a support bottom mesh assembly that is fixedly sleeved on the outer circumference of the base roller, and an outer patterned nickel mesh that can be detached separately from the outer circumference of the support bottom mesh assembly and cooperates with the positioning end caps at both ends of the base roller, the pattern can be changed without disassembling the entire mesh sleeve and the base roller, solving the pain point of the long time required to change the mesh sleeve of the existing integrated mesh sleeve, and thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A detachable and convenient hydroentanglement machine mesh sleeve structure includes: a base roller providing a reference for mesh sleeve installation, wherein the base roller is configured as a high-precision rigid roller;

[0007] The supporting bottom mesh assembly, which is used to withstand the impact of high-pressure water jets and the tension of the locking mechanism, is fixedly sleeved on the outer circumferential surface of the base roller; the outer patterned nickel mesh can be detachably sleeved on the outer circumferential surface of the supporting bottom mesh assembly, and flange sleeves are respectively provided at both ends of the outer patterned nickel mesh, and positioning end caps for fixing the two sets of flange sleeves are respectively provided at both ends of the base roller.

[0008] Preferably, the positioning end cap includes a sleeve, which is sleeved on the end of the base roller and fixed by bolts. An annular flange corresponding to the flange sleeve is fixedly sleeved on the outer wall of the sleeve, and the annular flange is bolted to the flange sleeve.

[0009] Preferably, the outer patterned nickel mesh has a aperture of 2.9 mm with chamfered openings, a transverse hole spacing of 7.6 mm, a longitudinal hole spacing of 4.4 mm, and a thickness of 1.6 mm.

[0010] Preferably, the flange sleeve and the outer patterned nickel mesh are integrally formed, and the inner wall of the flange sleeve is provided with positioning protrusions that are adapted to the outer peripheral surface of the support bottom mesh assembly.

[0011] Preferably, the supporting base mesh assembly includes, from the inside out, a stainless steel perforated mesh, a 14-mesh stainless steel wire mesh, and a 60-mesh stainless steel wire mesh, which are fixedly connected to each other.

[0012] Preferably, the stainless steel perforated mesh is fixed to the outer peripheral surface of the base roller by welding.

[0013] Preferably, the inner circumferential surface of the outer patterned nickel mesh and the outer circumferential surface of the supporting bottom mesh assembly are in a clearance fit, with the gap not exceeding 0.2 mm.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention separates the mesh sleeve into a fixed supporting base mesh assembly and a separately detachable outer patterned nickel mesh. When it is necessary to change the pattern of the spunlace nonwoven fabric product to achieve production conversion, only the positioning end caps at both ends of the base roller need to be removed to remove and replace the outer patterned nickel mesh from the outer periphery of the supporting base mesh assembly. Unlike existing one-piece mesh sleeves, it does not require disassembling the entire mesh sleeve and base roller. This structural design completely solves the pain point of the long time required for overall mesh replacement in the prior art, significantly shortens the mesh replacement operation time, effectively improves production continuity and production conversion flexibility, and can better adapt to the market production needs of multiple varieties and small batches. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the base roller, the supporting bottom net assembly, and the base roller of this utility model;

[0018] Figure 3 This is a schematic diagram of the positioning end cap of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the support base mesh assembly of this utility model.

[0020] In the diagram: 1. Base roller; 2. Supporting bottom mesh assembly; 201. Stainless steel perforated mesh; 202. 14-mesh stainless steel wire mesh; 203. 60-mesh stainless steel wire mesh; 3. Outer patterned nickel mesh; 4. Flange sleeve; 5. Positioning end cap; 501. Sleeve; 502. Annular flange; 6. Positioning protrusion. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4 This utility model provides a technical solution:

[0023] A detachable and convenient hydroentangling machine mesh sleeve structure includes: a base roller 1 providing a reference for mesh sleeve installation, the base roller 1 being configured as a high-precision rigid roller; a support bottom mesh assembly 2 for withstanding the impact of high-pressure water from hydroentangling and the tension of the locking mechanism, which is fixedly sleeved on the outer circumferential surface of the base roller 1; an outer patterned nickel mesh 3 that can be detachably sleeved on the outer circumferential surface of the support bottom mesh assembly 2, and flange sleeves 4 are respectively provided at both ends of the outer patterned nickel mesh 3, and positioning end caps 5 for fixing the two sets of flange sleeves 4 are respectively provided at both ends of the base roller 1.

[0024] By setting up a split structure consisting of "high-precision rigid base roller 1, fixed support bottom mesh assembly 2, detachable outer patterned nickel mesh 3, and positioning end cap 5", the design limitations of the existing integrated mesh sleeve are broken. This achieves the effect of changing patterns without disassembling the entire mesh sleeve, fundamentally solving the problem of time-consuming traditional mesh replacement. Among them, the high-precision design of the base roller 1 (such as cylindricity error ≤0.02mm and concentricity error ≤0.01mm) ensures the coaxial installation of the support bottom mesh assembly 2 and the outer patterned nickel mesh 3, avoiding vibration caused by roller eccentricity during mesh sleeve operation, and further ensuring the stability of hydroentangling operations.

[0025] The positioning end cover 5 includes a sleeve 501, which is fitted onto the end of the base roller 1 and fixed by bolts. An annular flange 502 corresponding to the flange sleeve 4 is fixedly fitted onto the outer wall of the sleeve 501 and bolted to the flange sleeve 4. By setting the fixing method of "sleeve 501 fitting + bolting" and the annular flange 502 that matches the flange sleeve 4, the positioning end cover 5 can be quickly disassembled and assembled, and the flange sleeve 4 can be stably limited, preventing the outer patterned nickel mesh 3 from shifting during hydroentangling operations. The bolts selected here are preferably hexagonal head bolts (such as M8×20 specification), whose head-embedded design can avoid interference with other parts of the hydroentangling machine. At the same time, a high-pressure resistant rubber gasket can be added to the contact surface between the annular flange 502 and the flange sleeve 4 to further enhance the sealing of the connection and prevent high-pressure water from leaking from the gaps.

[0026] The outer patterned nickel mesh 3 has a pore size of 2.9mm with chamfered openings, a transverse pore spacing of 7.6mm, a longitudinal pore spacing of 4.4mm, and a thickness of 1.6mm. By setting specific pore sizes, pore spacing, and chamfered openings, combined with a 1.6mm thickness, precise control of the spunlace nonwoven fabric pattern formation (such as small pearl patterns) is achieved. At the same time, it ensures that high-pressure water flows smoothly through the mesh of the outer patterned nickel mesh 3, reduces fiber entanglement resistance, and improves the product's softness and breathability. The chamfered opening design (chamfer angle 30°-45°, chamfer depth 0.2-0.3mm) avoids eddies generated during water flow impact, reducing fiber accumulation and blockage at the openings. The 1.6mm thickness ensures the structural strength of the nickel mesh (able to withstand 30MPa high-pressure water impact) while preventing the weakening of the pattern's three-dimensionality due to excessive thickness.

[0027] The flange sleeve 4 and the outer patterned nickel mesh 3 are integrally formed, and the inner wall of the flange sleeve 4 is provided with positioning protrusions 6 that are adapted to the outer circumferential surface of the support base mesh assembly 2. By setting the flange sleeve 4 and the outer patterned nickel mesh 3 to be integrally formed, and the positioning protrusions 6 that are adapted to the support base mesh assembly 2, the structural strength of the flange sleeve 4 and the outer patterned nickel mesh 3 is enhanced, preventing breakage at the connection during disassembly and assembly. At the same time, it enables the outer patterned nickel mesh 3 to be quickly aligned and installed, reducing calibration time. The integral forming process preferably uses laser welding (weld width 0.5-0.8mm, welding strength ≥200MPa) to ensure that there are no stress concentration points between the flange sleeve 4 and the nickel mesh. The positioning protrusions 6 are preferably evenly arranged in the circumference of 3-4 (protrusion height 1-1.5mm, width 2-3mm), which can quickly adapt to the positioning groove on the outer circumferential surface of the support base mesh assembly 2, achieving "one-time installation accuracy".

[0028] The supporting bottom mesh assembly 2 includes, from the inside out, a stainless steel perforated mesh 201, a 14-mesh stainless steel wire mesh 202, and a 60-mesh stainless steel wire mesh 203, which are fixedly connected to each other. By setting up and fixing three layers of stainless steel mesh with different structures—stainless steel perforated mesh 201, 14-mesh stainless steel wire mesh 202, and 60-mesh stainless steel wire mesh 203—a composite support structure of "inner support (stainless steel perforated mesh 201) + middle reinforcement (14-mesh stainless steel wire mesh 202) + outer filtration (60-mesh stainless steel wire mesh 203)" is formed. This structure can fully withstand the impact of high-pressure water and the tension of locking, prevent deformation of the support base mesh component 2, and ensure the uniform penetration of water flow. The perforation rate of the stainless steel perforated mesh 201 is set to 50%-60% (pore diameter 3-4mm), which provides sufficient support strength without obstructing water flow. The combination of 14-mesh wire mesh (0.8mm wire diameter) and 60-mesh wire mesh (0.2mm wire diameter) can filter out fine fiber impurities in the mesh, preventing impurities from entering the base roller 1 and affecting the equipment's lifespan.

[0029] The stainless steel perforated mesh 201 is fixed to the outer circumference of the base roller 1 by welding. By fixing the stainless steel perforated mesh 201 to the base roller 1 by welding, the supporting bottom mesh assembly 2 and the base roller 1 are formed into a stable whole, preventing the supporting bottom mesh assembly 2 from rotating or shifting relative to the base roller 1 during hydroentangling operations, and ensuring the overall stability of the mesh sleeve. The preferred welding method is argon arc welding (weld spot spacing 20-30mm, weld spot diameter 3-4mm). After welding, the weld is ground (surface roughness Ra≤0.8μm) to avoid weld protrusions scratching the inner fiber mesh. At the same time, before welding, the contact surface between the outer circumference of the base roller 1 and the stainless steel perforated mesh 201 is derusted (rust removal grade Sa2.5) to ensure the weld strength.

[0030] The inner circumferential surface of the outer patterned nickel mesh 3 and the outer circumferential surface of the supporting base mesh assembly 2 are fitted with a clearance, with a clearance not exceeding 0.2mm. By setting a clearance of no more than 0.2mm, the outer patterned nickel mesh 3 can be quickly fitted and disassembled, while avoiding relative shaking between the outer patterned nickel mesh 3 and the supporting base mesh assembly 2 during hydroentangling operations, ensuring the precise positioning of the high-pressure water jets. This clearance is achieved through strict control of machining precision (machining tolerance of the inner circumferential surface of the outer patterned nickel mesh 3 ±0.05mm, and machining tolerance of the outer circumferential surface of the supporting base mesh assembly 2 ±0.05mm). If the clearance is too large (exceeding 0.2mm), it will cause radial runout of the nickel mesh during hydroentangling, resulting in pattern misalignment. If the clearance is too small (less than 0.1mm), it will increase the frictional resistance during the assembly and disassembly of the outer patterned nickel mesh 3, easily leading to scratches on the mesh.

[0031] Working principle: Before the production of semi-cross-thread spunlace nonwoven fabric, the assembly of the mesh structure is completed first. Using the high-precision rigid base roller 1 as the installation reference, the stainless steel perforated mesh 201 is fixed to the outer circumference of the base roller 1 by argon arc welding. Then, the 14-mesh stainless steel wire mesh 202 and the 60-mesh stainless steel wire mesh 203 are fixedly connected to the stainless steel perforated mesh 201 in sequence to form an integrated support bottom mesh assembly 2. Subsequently, the outer patterned nickel mesh 3 is aligned with the outer circumference of the support bottom mesh assembly 2 through the positioning protrusion 6 on the inner wall of the flange sleeve 4. Finally, the sleeve 501 of the positioning end cover 5 is fitted onto both ends of the base roller 1 and the sleeve 501 is fixed by the internal hexagon screws. At the same time, the annular flange 502 is bolted to the flange sleeve 4 to complete the assembly and fixation of the entire mesh.

[0032] During the production process, the fiber web is laid flat on the surface of the outer patterned nickel mesh 3 by a conveying mechanism. The high-pressure water needles (pressure 20-30MPa) of the hydroentangling machine penetrate the fiber web and impact the outer patterned nickel mesh 3. The water flow enters the supporting bottom mesh assembly 2 through the 2.9mm aperture of the nickel mesh 3 (the chamfered aperture reduces eddies). After being supported by the stainless steel perforated mesh 201, reinforced by the 14-mesh steel wire mesh, and filtered by the 60-mesh steel wire mesh, a multi-directional reflective turbulence is formed, which promotes the fiber web to fully interweave and entangle in three-dimensional space. At the same time, the 7.6mm transverse and 4.4mm longitudinal aperture of the outer patterned nickel mesh 3 precisely presses out the required hydroentangled nonwoven fabric pattern (such as small pearl pattern).

[0033] When it is necessary to change the product pattern to achieve production conversion, it is only necessary to remove the screws connecting the positioning end cover 5 to the base roller 1 and flange sleeve 4. After removing the positioning end cover 5, the old outer pattern nickel mesh 3 can be pulled out from the outer periphery of the support bottom mesh assembly 2. Then, the new pattern outer pattern nickel mesh 3 is aligned with the support bottom mesh assembly 2 through the positioning protrusion 6, and the positioning end cover 5 is reinstalled and the screws are tightened to complete the mesh replacement operation. The whole process does not require disassembling the support bottom mesh assembly 2 and the base roller 1, which greatly shortens the mesh replacement time, effectively ensures production continuity, and adapts to the production needs of multiple varieties and small batches.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A detachable and easily removable hydroentanglement machine mesh sleeve structure, characterized in that, include: A base roller (1) is provided as the mounting reference for the mesh sleeve, and the base roller (1) is configured as a high-precision rigid roller; A support bottom net assembly (2) is used to withstand the impact of high-pressure water jets and the tension of the locking mechanism. The support bottom net assembly (2) is fixedly sleeved on the outer circumferential surface of the base roller (1). The outer patterned nickel mesh (3) can be detachably fitted onto the outer periphery of the support base mesh assembly (2), and the two ends of the outer patterned nickel mesh (3) are respectively provided with flange sleeves (4), and the two ends of the base roller (1) are respectively provided with positioning end caps (5) for fixing the two sets of flange sleeves (4).

2. The detachable and easily detachable hydroentangling machine mesh sleeve structure according to claim 1, characterized in that: The positioning end cap (5) includes a sleeve (501), which is sleeved on the end of the base roller (1) and fixed by bolts. An annular flange (502) corresponding to the flange sleeve (4) is fixedly sleeved on the outer wall of the sleeve (501), and the annular flange (502) is bolted to the flange sleeve (4).

3. The detachable and easily detachable hydroentangling machine mesh sleeve structure according to claim 1, characterized in that: The outer patterned nickel mesh (3) has a hole diameter of 2.9 mm and a chamfered hole opening, a transverse hole spacing of 7.6 mm, a longitudinal hole spacing of 4.4 mm, and a thickness of 1.6 mm.

4. The detachable and easily detachable hydroentangling machine mesh sleeve structure according to claim 1, characterized in that: The flange sleeve (4) and the outer patterned nickel mesh (3) are integrally formed, and the inner wall of the flange sleeve (4) is provided with a positioning protrusion (6) that is adapted to the outer peripheral surface of the support bottom mesh assembly (2).

5. The detachable and easily detachable hydroentangling machine mesh sleeve structure according to claim 1, characterized in that: The supporting bottom mesh assembly (2) includes, from the inside out, a stainless steel perforated mesh (201), a 14-mesh stainless steel wire mesh (202), and a 60-mesh stainless steel wire mesh (203), which are fixedly connected to each other.

6. The detachable and easily detachable hydroentangling machine mesh sleeve structure according to claim 5, characterized in that: The stainless steel perforated mesh (201) is fixed to the outer circumference of the base roller (1) by welding.

7. The detachable and easily removable hydroentangling machine mesh sleeve structure according to claim 1, characterized in that: The inner circumferential surface of the outer patterned nickel mesh (3) and the outer circumferential surface of the supporting bottom mesh assembly (2) are in a clearance fit, with a gap not exceeding 0.2 mm.

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