A plant fiber polishing wheel

Abstract

The utility model discloses a kind of plant fiber polishing grinding wheel, including polishing grinding wheel, abrasive composite layer and fiber framework layer;The surface central position of polishing grinding wheel is provided with through-hole;Abrasive composite layer is arranged in the inside of polishing grinding wheel, and the bottom of abrasive composite layer is provided with base layer;The utility model is by stress dissipation layer using alternate layer design of bottom layer, transition layer and working layer, different fiber direction or material lamination, impact load and centrifugal stress in the process of polishing and grinding can be effectively dispersed, reduce structural cracking risk;By abrasive composite layer using bottom layer, transition layer, working layer, three layers of wear-resistant structure design, by material performance complement, bottom layer high cohesive strength, transition layer stress buffer, make the wear life of polishing and grinding wheel than traditional single-layer structure has somewhat improved;By the plant fiber matrix of working layer endows abrasive composite layer with "flexible grinding" characteristics, can be attached to stainless steel pipe material, sheet complex curved surface, improve processing precision stability.

Description

Technical Field

[0001] This utility model relates to the field of polishing technology for stainless steel pipes and plates, specifically a plant fiber polishing wheel. Background Technology

[0002] Abrasives are tools used for grinding and polishing. Most abrasives are man-made, made from abrasive grains and binders, while some are natural abrasives made directly from natural minerals. Besides their widespread use in machinery manufacturing and other metal processing industries, abrasives are also used in food processing, papermaking, and the processing of non-metallic materials such as ceramics, glass, stone, plastics, rubber, and wood.

[0003] A polishing wheel is a wheel-shaped abrasive tool used for grinding or polishing tool surfaces or coatings. Existing polishing wheels typically use abrasive cloth wheels, nylon wheels, bonded abrasive cloth wheels, resin wheels, and so on. There are many types of abrasive cloth wheels, including flat abrasive cloth wheels, flap wheels, and shank abrasive cloth wheels.

[0004] In existing technologies, most stainless steel pipe and plate polishing wheels adopt a single-layer or double-layer abrasive structure, and the skeleton layer is usually made of a single material (such as ordinary fiber or metal mesh) without a specially designed stress dispersion structure. However, under high-speed polishing or high-load conditions, the single-layer / double-layer structure, due to the lack of a gradient stress buffer design, is prone to stress concentration (high stress concentration coefficient) due to the rigidity difference between the abrasive layer and the skeleton layer. Especially when subjected to impact loads or centrifugal force, the abrasive layer is prone to peeling off from the skeleton layer, or the skeleton layer itself may experience radial cracking or circumferential tearing, resulting in a short service life of the polishing wheel, making it unable to meet the needs of continuous operation, and posing safety hazards (such as flying debris).

[0005] In light of this, we have introduced a plant fiber polishing wheel. Utility Model Content

[0006] The purpose of this invention is to provide a plant fiber polishing wheel to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a plant fiber polishing wheel, comprising: a polishing wheel, an abrasive composite layer, and a fiber skeleton layer;

[0008] A through hole is provided at the center of the surface of the polishing wheel;

[0009] The abrasive composite layer is disposed inside the polishing wheel, and a base layer is disposed at the bottom of the abrasive composite layer;

[0010] The fiber skeleton layer is disposed inside the polishing wheel at the bottom of the base layer;

[0011] The abrasive composite layer has a wear-resistant structure inside. The bottom layer, transition layer and working layer of the wear-resistant structure work together to increase the wear resistance of the polishing wheel.

[0012] Preferably, the bottom layer is connected inside the abrasive composite layer, the transition layer is connected to one side of the surface of the bottom layer, and the working layer is connected to the other side of the surface of the bottom layer.

[0013] Preferably, a bamboo is connected to the center of the fiber skeleton layer, a bamboo filament is connected to one side of the bamboo surface, and sisal fiber is connected to the other side of the bamboo surface.

[0014] Preferably, an interface reinforcement layer is attached to one side of the surface of the abrasive composite layer.

[0015] Preferably, a stress dissipation layer is attached to the surface of the fiber skeleton layer.

[0016] Preferably, the stress dissipation layer is designed with alternating lay-up layers.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] (1) By adopting an alternating layering design for the stress dissipation layers of the bottom layer, transition layer and working layer, and layering different fiber directions or materials, the impact load and centrifugal stress during the polishing process can be effectively dispersed, reducing the risk of structural cracking. The stress concentration coefficient is effectively reduced, adapting to high-load continuous operation scenarios. While resisting high-speed rotating centrifugal force, it enhances shear resistance and prevents radial cracking or circumferential tearing of the polishing wheel.

[0019] (2) The abrasive composite layer adopts a three-layer wear-resistant structure design consisting of a bottom layer, a transition layer, and a working layer. Through the complementary properties of materials, the bottom layer has high bonding strength, the transition layer has stress buffering, and the working layer has self-sharpening grinding, which improves the wear resistance of the polishing wheel compared with the traditional single-layer structure.

[0020] (3) The plant fiber matrix of the working layer gives the abrasive composite layer the characteristics of "flexible grinding", which can fit the complex curved surfaces (such as arc surfaces and edges) of stainless steel pipes and plates, achieve uniform grinding, avoid surface scratches caused by rigid abrasives, effectively reduce the surface roughness of the workpiece, improve the stability of processing accuracy, and reduce the manual polishing process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the base layer, abrasive composite layer, interface reinforcement layer, fiber skeleton layer and stress dissipation layer of this utility model when disassembled;

[0023] Figure 3 This is a side cross-sectional structural diagram of the abrasive composite layer of this utility model;

[0024] Figure 4 This is a schematic diagram of the side section of the fiber skeleton layer of this utility model.

[0025] In the diagram: 1. Polishing wheel; 11. Base layer; 12. Abrasive composite layer; 121. Transition layer; 122. Bottom layer; 123. Working layer; 13. Interface reinforcement layer; 14. Fiber skeleton layer; 141. Moso bamboo filament fiber; 142. Bamboo stalk; 143. Sisal fiber; 15. Stress dissipation layer; 2. Through hole. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 The present invention provides a technical solution: a plant fiber polishing wheel, comprising: a polishing wheel 1, wherein a through hole 2 is provided at the center of the surface of the polishing wheel 1;

[0028] Abrasive composite layer 12 is disposed inside the polishing wheel 1, and a base layer 11 is disposed at the bottom of the abrasive composite layer 12;

[0029] Fiber skeleton layer 14, which is disposed inside the polishing wheel 1 at the bottom of the base layer 11;

[0030] The abrasive composite layer 12 has a wear-resistant structure inside. The bottom layer 122, the transition layer 121 and the working layer 123 of the wear-resistant structure work together to increase the wear resistance of the polishing wheel 1.

[0031] The bottom layer 122 is connected inside the abrasive composite layer 12, the transition layer 121 is connected to one side of the surface of the bottom layer 122, and the working layer 123 is connected to the other side of the surface of the bottom layer 122.

[0032] The bottom layer 122 is closely attached to the base layer 11 and is made of resin or metal adhesive with high bonding strength. It is firmly bonded to the base layer through hot pressing or chemical curing process. The function of this layer is to transmit rotational power and provide a stable support base for the transition layer and working layer, resist the shear force generated during grinding, and prevent the abrasive composite layer from peeling off from the base layer as a whole.

[0033] Transition layer 121: Located on one side of the bottom layer 122, it adopts a "gradient abrasive" design. The particle size of the abrasive gradually decreases from the bottom layer to the working layer (e.g., from 80 mesh to 200 mesh), while the hardness of the binder gradually decreases. This design can buffer the stress change between the bottom layer and the working layer: the coarse particle end (closer to the bottom layer) undertakes the main support role, and the fine particle end (closer to the working layer) adapts to the fine grinding requirements of the working layer, avoiding delamination and cracking due to excessive hardness difference.

[0034] Working layer 123: Directly contacts the workpiece being polished (such as stainless steel pipes / plates), composed of high-hardness abrasives (such as alumina and silicon carbide particles) and plant fibers (such as sisal short fibers). The abrasive particles are fixed in the plant fiber matrix by a binder. When rotating at high speed, the exposed abrasive edges cut the workpiece surface, removing burrs, oxide scale, or rough layers. The plant fiber matrix has a certain elasticity and can produce micro-deformation during grinding, allowing the abrasive particles to act on the workpiece in a "flexible contact" manner, reducing surface damage caused by rigid impact. In addition, when the surface abrasive wears off, the internal plant fiber matrix gradually wears off, releasing new abrasive particles, forming a "self-sharpening effect" and continuously maintaining the grinding capability.

[0035] The fiber skeleton layer 14 is connected to a central position of a bamboo 142, and a bamboo filament fiber 141 is connected to one side of the surface of the bamboo 142, while a sisal fiber 143 is connected to the other side of the surface of the bamboo 142.

[0036] Bamboo 142, moso bamboo filament fiber 141, and sisal fiber 143 form a three-dimensional network through a natural twisting effect of 15 layers, with a single layer thickness of 0.2-0.5mm. Micron-level fibrils with an aspect ratio >500 are obtained through the filament splitting process. The micropores (diameter 50-200nm) on the surface of the natural fibers enhance resin penetration and anchoring. The 15 layers are stacked to form a gradient buffer structure with a thickness of 2.5-5mm. The layers are stacked and shaped into sheets. Abrasive, adhesive, and curing agent are applied to each layer and impregnated. After natural drying and shaping, the finished product is obtained by trimming and drilling.

[0037] An interface reinforcement layer 13 is connected to one side of the surface of the abrasive composite layer 12. A self-healing system is constructed between the layers using a microencapsulated curing agent (particle size 10-50μm): capsule shell: thermoplastic polyimide (rupture temperature 180℃), core: fluorinated epoxy curing agent + silicon carbide whiskers (diameter 0.1μm). Frictional heat generation triggers microcapsule rupture, realizing dynamic reinforcement during service.

[0038] A stress dissipation layer 15 is connected to the surface of the fiber skeleton layer 14.

[0039] The stress dissipation layer 15 is an alternating layup design and is not a symmetrical structure. The odd-numbered layers have fibers orthogonally arranged at 0° / 90°, while the even-numbered layers are spirally wound (wound angle 55°). The interlayer friction coefficient is designed with a gradient (decreasing from 0.15 to 0.08).

[0040] Specifically, during use, the polishing wheel 1 is connected to the driving device (such as a motor shaft) through the central through hole 2 to achieve high-speed rotation. The polishing wheel has multiple layers working together inside.

[0041] Base layer 11: Serves as the supporting base for the abrasive composite layer 12, providing structural stability and ensuring that the abrasive composite layer does not deform or fall off during high-speed rotation;

[0042] Abrasive composite layer 12: It undertakes the main polishing function, and its internal wear-resistant structure achieves high-efficiency grinding through a three-layer design.

[0043] Bottom layer 122: Directly connected to the base layer 11, fixed with high-strength adhesive material to ensure reliable connection between the abrasive composite layer and the base layer, and to transmit rotational power;

[0044] Transition layer 121: Located on one side of the bottom layer 122, it buffers the stress difference between the bottom layer 122 and the working layer 123 through gradient material design (such as the transition of abrasive particle size from large to small) to avoid delamination;

[0045] Working layer 123: Directly contacts the object being polished (such as stainless steel pipes / plates), using high-hardness abrasives (such as alumina, silicon carbide) combined with plant fibers, generating grinding force through high-speed rotation to remove burrs, oxide scale or rough layers from the surface of the workpiece.

[0046] The fiber skeleton layer 14 is located below the base layer 11. It has a central skeleton of bamboo 142 and is reinforced with bamboo filament fiber 141 and sisal fiber 143 on both sides. The natural flexibility and high strength of the plant fibers provide elastic support during polishing, adapting to the irregular contours of the workpiece surface. At the same time, it consumes some vibration energy through friction damping between fibers.

[0047] Interface reinforcement layer 13: Covers the surface of the abrasive composite layer 12 and forms a dense layer through chemical or physical treatment (such as coating or sintering) to prevent abrasive particles from falling off prematurely and extend the service life of the polishing wheel;

[0048] Stress dissipation layer 15: Adopting an alternating layer design (such as different fiber directions or material stacking), when the polishing wheel is subjected to impact or uneven load, stress is dissipated through interlayer shear deformation and fiber stretching, avoiding local stress concentration that could lead to structural cracking.

[0049] Working mechanism of wear-resistant structure

[0050] The three-layer design of the wear-resistant structure achieves long-lasting wear resistance through complementary material properties:

[0051] Bottom layer 122: High bonding strength, resists shear force between the abrasive composite layer and the base layer, and prevents overall peeling.

[0052] Transition layer 121: Medium hardness, with both buffering and supporting functions, so that the abrasive particles in the working layer are subjected to uniform force, reducing particle breakage caused by sudden stress changes.

[0053] Working layer 123: High wear resistance, abrasive particles are exposed to the outside, cutting the workpiece surface with sharp edges. At the same time, the plant fiber matrix gradually releases new abrasive particles during the wear process, forming a "self-sharpening" effect and maintaining continuous grinding capability.

[0054] The unique role of plant fibers

[0055] Cizhu 142: As the central skeleton, its longitudinal fiber has high strength, providing radial structural support for the polishing wheel and resisting rotational centrifugal force.

[0056] Moso bamboo filament 141: Laterally distributed, it enhances the shear resistance of the skeleton layer and prevents fiber tearing caused by lateral forces.

[0057] Sisal fiber 143: High elasticity and corrosion resistance, maintaining stable performance in humid or corrosive environments, and adaptable to complex polishing conditions (such as wet polishing with coolant).

[0058] 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 plant fiber polishing wheel, characterized in that, include: Polishing wheel (1), with a through hole (2) at the center of the surface of the polishing wheel (1); Abrasive composite layer (12) is disposed inside the polishing wheel (1), and a base layer (11) is disposed at the bottom of the abrasive composite layer (12). A fiber skeleton layer (14) is disposed inside the polishing wheel (1) at the bottom of the base layer (11); The abrasive composite layer (12) has a wear-resistant structure inside. The bottom layer (122), transition layer (121) and working layer (123) of the wear-resistant structure work together to increase the wear resistance of the polishing wheel (1).

2. The plant fiber polishing wheel according to claim 1, characterized in that, The bottom layer (122) is connected to the interior of the abrasive composite layer (12), the transition layer (121) is connected to one side of the surface of the bottom layer (122), and the working layer (123) is connected to the other side of the surface of the bottom layer (122).

3. The plant fiber polishing wheel according to claim 1, characterized in that, The fiber skeleton layer (14) is connected to a central position with a bamboo (142), a bamboo filament fiber (141) is connected to one side of the surface of the bamboo (142), and a sisal fiber (143) is connected to the other side of the surface of the bamboo (142).

4. The plant fiber polishing wheel according to claim 1, characterized in that, An interface reinforcement layer (13) is connected to one side of the surface of the abrasive composite layer (12).

5. A plant fiber polishing wheel according to claim 1, characterized in that, The surface of the fiber skeleton layer (14) is connected to a stress dissipation layer (15).

6. A plant fiber polishing wheel according to claim 5, characterized in that, The stress dissipation layer (15) is designed with alternating lay-up.

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